1 /*
2  * cxd2841er.c
3  *
4  * Sony digital demodulator driver for
5  *	CXD2841ER - DVB-S/S2/T/T2/C/C2
6  *	CXD2854ER - DVB-S/S2/T/T2/C/C2, ISDB-T/S
7  *
8  * Copyright 2012 Sony Corporation
9  * Copyright (C) 2014 NetUP Inc.
10  * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
11  * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License as published by
15  * the Free Software Foundation; either version 2 of the License, or
16  * (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21  * GNU General Public License for more details.
22   */
23 
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/string.h>
27 #include <linux/slab.h>
28 #include <linux/bitops.h>
29 #include <linux/math64.h>
30 #include <linux/log2.h>
31 #include <linux/dynamic_debug.h>
32 #include <linux/kernel.h>
33 
34 #include <media/dvb_math.h>
35 #include <media/dvb_frontend.h>
36 #include "cxd2841er.h"
37 #include "cxd2841er_priv.h"
38 
39 #define MAX_WRITE_REGSIZE	16
40 #define LOG2_E_100X 144
41 
42 #define INTLOG10X100(x) ((u32) (((u64) intlog10(x) * 100) >> 24))
43 
44 /* DVB-C constellation */
45 enum sony_dvbc_constellation_t {
46 	SONY_DVBC_CONSTELLATION_16QAM,
47 	SONY_DVBC_CONSTELLATION_32QAM,
48 	SONY_DVBC_CONSTELLATION_64QAM,
49 	SONY_DVBC_CONSTELLATION_128QAM,
50 	SONY_DVBC_CONSTELLATION_256QAM
51 };
52 
53 enum cxd2841er_state {
54 	STATE_SHUTDOWN = 0,
55 	STATE_SLEEP_S,
56 	STATE_ACTIVE_S,
57 	STATE_SLEEP_TC,
58 	STATE_ACTIVE_TC
59 };
60 
61 struct cxd2841er_priv {
62 	struct dvb_frontend		frontend;
63 	struct i2c_adapter		*i2c;
64 	u8				i2c_addr_slvx;
65 	u8				i2c_addr_slvt;
66 	const struct cxd2841er_config	*config;
67 	enum cxd2841er_state		state;
68 	u8				system;
69 	enum cxd2841er_xtal		xtal;
70 	enum fe_caps caps;
71 	u32				flags;
72 };
73 
74 static const struct cxd2841er_cnr_data s_cn_data[] = {
75 	{ 0x033e, 0 }, { 0x0339, 100 }, { 0x0333, 200 },
76 	{ 0x032e, 300 }, { 0x0329, 400 }, { 0x0324, 500 },
77 	{ 0x031e, 600 }, { 0x0319, 700 }, { 0x0314, 800 },
78 	{ 0x030f, 900 }, { 0x030a, 1000 }, { 0x02ff, 1100 },
79 	{ 0x02f4, 1200 }, { 0x02e9, 1300 }, { 0x02de, 1400 },
80 	{ 0x02d4, 1500 }, { 0x02c9, 1600 }, { 0x02bf, 1700 },
81 	{ 0x02b5, 1800 }, { 0x02ab, 1900 }, { 0x02a1, 2000 },
82 	{ 0x029b, 2100 }, { 0x0295, 2200 }, { 0x0290, 2300 },
83 	{ 0x028a, 2400 }, { 0x0284, 2500 }, { 0x027f, 2600 },
84 	{ 0x0279, 2700 }, { 0x0274, 2800 }, { 0x026e, 2900 },
85 	{ 0x0269, 3000 }, { 0x0262, 3100 }, { 0x025c, 3200 },
86 	{ 0x0255, 3300 }, { 0x024f, 3400 }, { 0x0249, 3500 },
87 	{ 0x0242, 3600 }, { 0x023c, 3700 }, { 0x0236, 3800 },
88 	{ 0x0230, 3900 }, { 0x022a, 4000 }, { 0x0223, 4100 },
89 	{ 0x021c, 4200 }, { 0x0215, 4300 }, { 0x020e, 4400 },
90 	{ 0x0207, 4500 }, { 0x0201, 4600 }, { 0x01fa, 4700 },
91 	{ 0x01f4, 4800 }, { 0x01ed, 4900 }, { 0x01e7, 5000 },
92 	{ 0x01e0, 5100 }, { 0x01d9, 5200 }, { 0x01d2, 5300 },
93 	{ 0x01cb, 5400 }, { 0x01c4, 5500 }, { 0x01be, 5600 },
94 	{ 0x01b7, 5700 }, { 0x01b1, 5800 }, { 0x01aa, 5900 },
95 	{ 0x01a4, 6000 }, { 0x019d, 6100 }, { 0x0196, 6200 },
96 	{ 0x018f, 6300 }, { 0x0189, 6400 }, { 0x0182, 6500 },
97 	{ 0x017c, 6600 }, { 0x0175, 6700 }, { 0x016f, 6800 },
98 	{ 0x0169, 6900 }, { 0x0163, 7000 }, { 0x015c, 7100 },
99 	{ 0x0156, 7200 }, { 0x0150, 7300 }, { 0x014a, 7400 },
100 	{ 0x0144, 7500 }, { 0x013e, 7600 }, { 0x0138, 7700 },
101 	{ 0x0132, 7800 }, { 0x012d, 7900 }, { 0x0127, 8000 },
102 	{ 0x0121, 8100 }, { 0x011c, 8200 }, { 0x0116, 8300 },
103 	{ 0x0111, 8400 }, { 0x010b, 8500 }, { 0x0106, 8600 },
104 	{ 0x0101, 8700 }, { 0x00fc, 8800 }, { 0x00f7, 8900 },
105 	{ 0x00f2, 9000 }, { 0x00ee, 9100 }, { 0x00ea, 9200 },
106 	{ 0x00e6, 9300 }, { 0x00e2, 9400 }, { 0x00de, 9500 },
107 	{ 0x00da, 9600 }, { 0x00d7, 9700 }, { 0x00d3, 9800 },
108 	{ 0x00d0, 9900 }, { 0x00cc, 10000 }, { 0x00c7, 10100 },
109 	{ 0x00c3, 10200 }, { 0x00bf, 10300 }, { 0x00ba, 10400 },
110 	{ 0x00b6, 10500 }, { 0x00b2, 10600 }, { 0x00ae, 10700 },
111 	{ 0x00aa, 10800 }, { 0x00a7, 10900 }, { 0x00a3, 11000 },
112 	{ 0x009f, 11100 }, { 0x009c, 11200 }, { 0x0098, 11300 },
113 	{ 0x0094, 11400 }, { 0x0091, 11500 }, { 0x008e, 11600 },
114 	{ 0x008a, 11700 }, { 0x0087, 11800 }, { 0x0084, 11900 },
115 	{ 0x0081, 12000 }, { 0x007e, 12100 }, { 0x007b, 12200 },
116 	{ 0x0079, 12300 }, { 0x0076, 12400 }, { 0x0073, 12500 },
117 	{ 0x0071, 12600 }, { 0x006e, 12700 }, { 0x006c, 12800 },
118 	{ 0x0069, 12900 }, { 0x0067, 13000 }, { 0x0065, 13100 },
119 	{ 0x0062, 13200 }, { 0x0060, 13300 }, { 0x005e, 13400 },
120 	{ 0x005c, 13500 }, { 0x005a, 13600 }, { 0x0058, 13700 },
121 	{ 0x0056, 13800 }, { 0x0054, 13900 }, { 0x0052, 14000 },
122 	{ 0x0050, 14100 }, { 0x004e, 14200 }, { 0x004c, 14300 },
123 	{ 0x004b, 14400 }, { 0x0049, 14500 }, { 0x0047, 14600 },
124 	{ 0x0046, 14700 }, { 0x0044, 14800 }, { 0x0043, 14900 },
125 	{ 0x0041, 15000 }, { 0x003f, 15100 }, { 0x003e, 15200 },
126 	{ 0x003c, 15300 }, { 0x003b, 15400 }, { 0x003a, 15500 },
127 	{ 0x0037, 15700 }, { 0x0036, 15800 }, { 0x0034, 15900 },
128 	{ 0x0033, 16000 }, { 0x0032, 16100 }, { 0x0031, 16200 },
129 	{ 0x0030, 16300 }, { 0x002f, 16400 }, { 0x002e, 16500 },
130 	{ 0x002d, 16600 }, { 0x002c, 16700 }, { 0x002b, 16800 },
131 	{ 0x002a, 16900 }, { 0x0029, 17000 }, { 0x0028, 17100 },
132 	{ 0x0027, 17200 }, { 0x0026, 17300 }, { 0x0025, 17400 },
133 	{ 0x0024, 17500 }, { 0x0023, 17600 }, { 0x0022, 17800 },
134 	{ 0x0021, 17900 }, { 0x0020, 18000 }, { 0x001f, 18200 },
135 	{ 0x001e, 18300 }, { 0x001d, 18500 }, { 0x001c, 18700 },
136 	{ 0x001b, 18900 }, { 0x001a, 19000 }, { 0x0019, 19200 },
137 	{ 0x0018, 19300 }, { 0x0017, 19500 }, { 0x0016, 19700 },
138 	{ 0x0015, 19900 }, { 0x0014, 20000 },
139 };
140 
141 static const struct cxd2841er_cnr_data s2_cn_data[] = {
142 	{ 0x05af, 0 }, { 0x0597, 100 }, { 0x057e, 200 },
143 	{ 0x0567, 300 }, { 0x0550, 400 }, { 0x0539, 500 },
144 	{ 0x0522, 600 }, { 0x050c, 700 }, { 0x04f6, 800 },
145 	{ 0x04e1, 900 }, { 0x04cc, 1000 }, { 0x04b6, 1100 },
146 	{ 0x04a1, 1200 }, { 0x048c, 1300 }, { 0x0477, 1400 },
147 	{ 0x0463, 1500 }, { 0x044f, 1600 }, { 0x043c, 1700 },
148 	{ 0x0428, 1800 }, { 0x0416, 1900 }, { 0x0403, 2000 },
149 	{ 0x03ef, 2100 }, { 0x03dc, 2200 }, { 0x03c9, 2300 },
150 	{ 0x03b6, 2400 }, { 0x03a4, 2500 }, { 0x0392, 2600 },
151 	{ 0x0381, 2700 }, { 0x036f, 2800 }, { 0x035f, 2900 },
152 	{ 0x034e, 3000 }, { 0x033d, 3100 }, { 0x032d, 3200 },
153 	{ 0x031d, 3300 }, { 0x030d, 3400 }, { 0x02fd, 3500 },
154 	{ 0x02ee, 3600 }, { 0x02df, 3700 }, { 0x02d0, 3800 },
155 	{ 0x02c2, 3900 }, { 0x02b4, 4000 }, { 0x02a6, 4100 },
156 	{ 0x0299, 4200 }, { 0x028c, 4300 }, { 0x027f, 4400 },
157 	{ 0x0272, 4500 }, { 0x0265, 4600 }, { 0x0259, 4700 },
158 	{ 0x024d, 4800 }, { 0x0241, 4900 }, { 0x0236, 5000 },
159 	{ 0x022b, 5100 }, { 0x0220, 5200 }, { 0x0215, 5300 },
160 	{ 0x020a, 5400 }, { 0x0200, 5500 }, { 0x01f6, 5600 },
161 	{ 0x01ec, 5700 }, { 0x01e2, 5800 }, { 0x01d8, 5900 },
162 	{ 0x01cf, 6000 }, { 0x01c6, 6100 }, { 0x01bc, 6200 },
163 	{ 0x01b3, 6300 }, { 0x01aa, 6400 }, { 0x01a2, 6500 },
164 	{ 0x0199, 6600 }, { 0x0191, 6700 }, { 0x0189, 6800 },
165 	{ 0x0181, 6900 }, { 0x0179, 7000 }, { 0x0171, 7100 },
166 	{ 0x0169, 7200 }, { 0x0161, 7300 }, { 0x015a, 7400 },
167 	{ 0x0153, 7500 }, { 0x014b, 7600 }, { 0x0144, 7700 },
168 	{ 0x013d, 7800 }, { 0x0137, 7900 }, { 0x0130, 8000 },
169 	{ 0x012a, 8100 }, { 0x0124, 8200 }, { 0x011e, 8300 },
170 	{ 0x0118, 8400 }, { 0x0112, 8500 }, { 0x010c, 8600 },
171 	{ 0x0107, 8700 }, { 0x0101, 8800 }, { 0x00fc, 8900 },
172 	{ 0x00f7, 9000 }, { 0x00f2, 9100 }, { 0x00ec, 9200 },
173 	{ 0x00e7, 9300 }, { 0x00e2, 9400 }, { 0x00dd, 9500 },
174 	{ 0x00d8, 9600 }, { 0x00d4, 9700 }, { 0x00cf, 9800 },
175 	{ 0x00ca, 9900 }, { 0x00c6, 10000 }, { 0x00c2, 10100 },
176 	{ 0x00be, 10200 }, { 0x00b9, 10300 }, { 0x00b5, 10400 },
177 	{ 0x00b1, 10500 }, { 0x00ae, 10600 }, { 0x00aa, 10700 },
178 	{ 0x00a6, 10800 }, { 0x00a3, 10900 }, { 0x009f, 11000 },
179 	{ 0x009b, 11100 }, { 0x0098, 11200 }, { 0x0095, 11300 },
180 	{ 0x0091, 11400 }, { 0x008e, 11500 }, { 0x008b, 11600 },
181 	{ 0x0088, 11700 }, { 0x0085, 11800 }, { 0x0082, 11900 },
182 	{ 0x007f, 12000 }, { 0x007c, 12100 }, { 0x007a, 12200 },
183 	{ 0x0077, 12300 }, { 0x0074, 12400 }, { 0x0072, 12500 },
184 	{ 0x006f, 12600 }, { 0x006d, 12700 }, { 0x006b, 12800 },
185 	{ 0x0068, 12900 }, { 0x0066, 13000 }, { 0x0064, 13100 },
186 	{ 0x0061, 13200 }, { 0x005f, 13300 }, { 0x005d, 13400 },
187 	{ 0x005b, 13500 }, { 0x0059, 13600 }, { 0x0057, 13700 },
188 	{ 0x0055, 13800 }, { 0x0053, 13900 }, { 0x0051, 14000 },
189 	{ 0x004f, 14100 }, { 0x004e, 14200 }, { 0x004c, 14300 },
190 	{ 0x004a, 14400 }, { 0x0049, 14500 }, { 0x0047, 14600 },
191 	{ 0x0045, 14700 }, { 0x0044, 14800 }, { 0x0042, 14900 },
192 	{ 0x0041, 15000 }, { 0x003f, 15100 }, { 0x003e, 15200 },
193 	{ 0x003c, 15300 }, { 0x003b, 15400 }, { 0x003a, 15500 },
194 	{ 0x0038, 15600 }, { 0x0037, 15700 }, { 0x0036, 15800 },
195 	{ 0x0034, 15900 }, { 0x0033, 16000 }, { 0x0032, 16100 },
196 	{ 0x0031, 16200 }, { 0x0030, 16300 }, { 0x002f, 16400 },
197 	{ 0x002e, 16500 }, { 0x002d, 16600 }, { 0x002c, 16700 },
198 	{ 0x002b, 16800 }, { 0x002a, 16900 }, { 0x0029, 17000 },
199 	{ 0x0028, 17100 }, { 0x0027, 17200 }, { 0x0026, 17300 },
200 	{ 0x0025, 17400 }, { 0x0024, 17500 }, { 0x0023, 17600 },
201 	{ 0x0022, 17800 }, { 0x0021, 17900 }, { 0x0020, 18000 },
202 	{ 0x001f, 18200 }, { 0x001e, 18300 }, { 0x001d, 18500 },
203 	{ 0x001c, 18700 }, { 0x001b, 18900 }, { 0x001a, 19000 },
204 	{ 0x0019, 19200 }, { 0x0018, 19300 }, { 0x0017, 19500 },
205 	{ 0x0016, 19700 }, { 0x0015, 19900 }, { 0x0014, 20000 },
206 };
207 
208 static int cxd2841er_freeze_regs(struct cxd2841er_priv *priv);
209 static int cxd2841er_unfreeze_regs(struct cxd2841er_priv *priv);
210 
211 static void cxd2841er_i2c_debug(struct cxd2841er_priv *priv,
212 				u8 addr, u8 reg, u8 write,
213 				const u8 *data, u32 len)
214 {
215 	dev_dbg(&priv->i2c->dev,
216 		"cxd2841er: I2C %s addr %02x reg 0x%02x size %d data %*ph\n",
217 		(write == 0 ? "read" : "write"), addr, reg, len, len, data);
218 }
219 
220 static int cxd2841er_write_regs(struct cxd2841er_priv *priv,
221 				u8 addr, u8 reg, const u8 *data, u32 len)
222 {
223 	int ret;
224 	u8 buf[MAX_WRITE_REGSIZE + 1];
225 	u8 i2c_addr = (addr == I2C_SLVX ?
226 		priv->i2c_addr_slvx : priv->i2c_addr_slvt);
227 	struct i2c_msg msg[1] = {
228 		{
229 			.addr = i2c_addr,
230 			.flags = 0,
231 			.len = len + 1,
232 			.buf = buf,
233 		}
234 	};
235 
236 	if (len + 1 >= sizeof(buf)) {
237 		dev_warn(&priv->i2c->dev, "wr reg=%04x: len=%d is too big!\n",
238 			 reg, len + 1);
239 		return -E2BIG;
240 	}
241 
242 	cxd2841er_i2c_debug(priv, i2c_addr, reg, 1, data, len);
243 	buf[0] = reg;
244 	memcpy(&buf[1], data, len);
245 
246 	ret = i2c_transfer(priv->i2c, msg, 1);
247 	if (ret >= 0 && ret != 1)
248 		ret = -EIO;
249 	if (ret < 0) {
250 		dev_warn(&priv->i2c->dev,
251 			"%s: i2c wr failed=%d addr=%02x reg=%02x len=%d\n",
252 			KBUILD_MODNAME, ret, i2c_addr, reg, len);
253 		return ret;
254 	}
255 	return 0;
256 }
257 
258 static int cxd2841er_write_reg(struct cxd2841er_priv *priv,
259 			       u8 addr, u8 reg, u8 val)
260 {
261 	u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
262 
263 	return cxd2841er_write_regs(priv, addr, reg, &tmp, 1);
264 }
265 
266 static int cxd2841er_read_regs(struct cxd2841er_priv *priv,
267 			       u8 addr, u8 reg, u8 *val, u32 len)
268 {
269 	int ret;
270 	u8 i2c_addr = (addr == I2C_SLVX ?
271 		priv->i2c_addr_slvx : priv->i2c_addr_slvt);
272 	struct i2c_msg msg[2] = {
273 		{
274 			.addr = i2c_addr,
275 			.flags = 0,
276 			.len = 1,
277 			.buf = &reg,
278 		}, {
279 			.addr = i2c_addr,
280 			.flags = I2C_M_RD,
281 			.len = len,
282 			.buf = val,
283 		}
284 	};
285 
286 	ret = i2c_transfer(priv->i2c, msg, 2);
287 	if (ret >= 0 && ret != 2)
288 		ret = -EIO;
289 	if (ret < 0) {
290 		dev_warn(&priv->i2c->dev,
291 			"%s: i2c rd failed=%d addr=%02x reg=%02x\n",
292 			KBUILD_MODNAME, ret, i2c_addr, reg);
293 		return ret;
294 	}
295 	cxd2841er_i2c_debug(priv, i2c_addr, reg, 0, val, len);
296 	return 0;
297 }
298 
299 static int cxd2841er_read_reg(struct cxd2841er_priv *priv,
300 			      u8 addr, u8 reg, u8 *val)
301 {
302 	return cxd2841er_read_regs(priv, addr, reg, val, 1);
303 }
304 
305 static int cxd2841er_set_reg_bits(struct cxd2841er_priv *priv,
306 				  u8 addr, u8 reg, u8 data, u8 mask)
307 {
308 	int res;
309 	u8 rdata;
310 
311 	if (mask != 0xff) {
312 		res = cxd2841er_read_reg(priv, addr, reg, &rdata);
313 		if (res)
314 			return res;
315 		data = ((data & mask) | (rdata & (mask ^ 0xFF)));
316 	}
317 	return cxd2841er_write_reg(priv, addr, reg, data);
318 }
319 
320 static u32 cxd2841er_calc_iffreq_xtal(enum cxd2841er_xtal xtal, u32 ifhz)
321 {
322 	u64 tmp;
323 
324 	tmp = (u64) ifhz * 16777216;
325 	do_div(tmp, ((xtal == SONY_XTAL_24000) ? 48000000 : 41000000));
326 
327 	return (u32) tmp;
328 }
329 
330 static u32 cxd2841er_calc_iffreq(u32 ifhz)
331 {
332 	return cxd2841er_calc_iffreq_xtal(SONY_XTAL_20500, ifhz);
333 }
334 
335 static int cxd2841er_get_if_hz(struct cxd2841er_priv *priv, u32 def_hz)
336 {
337 	u32 hz;
338 
339 	if (priv->frontend.ops.tuner_ops.get_if_frequency
340 			&& (priv->flags & CXD2841ER_AUTO_IFHZ))
341 		priv->frontend.ops.tuner_ops.get_if_frequency(
342 			&priv->frontend, &hz);
343 	else
344 		hz = def_hz;
345 
346 	return hz;
347 }
348 
349 static int cxd2841er_tuner_set(struct dvb_frontend *fe)
350 {
351 	struct cxd2841er_priv *priv = fe->demodulator_priv;
352 
353 	if ((priv->flags & CXD2841ER_USE_GATECTRL) && fe->ops.i2c_gate_ctrl)
354 		fe->ops.i2c_gate_ctrl(fe, 1);
355 	if (fe->ops.tuner_ops.set_params)
356 		fe->ops.tuner_ops.set_params(fe);
357 	if ((priv->flags & CXD2841ER_USE_GATECTRL) && fe->ops.i2c_gate_ctrl)
358 		fe->ops.i2c_gate_ctrl(fe, 0);
359 
360 	return 0;
361 }
362 
363 static int cxd2841er_dvbs2_set_symbol_rate(struct cxd2841er_priv *priv,
364 					   u32 symbol_rate)
365 {
366 	u32 reg_value = 0;
367 	u8 data[3] = {0, 0, 0};
368 
369 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
370 	/*
371 	 * regValue = (symbolRateKSps * 2^14 / 1000) + 0.5
372 	 *          = ((symbolRateKSps * 2^14) + 500) / 1000
373 	 *          = ((symbolRateKSps * 16384) + 500) / 1000
374 	 */
375 	reg_value = DIV_ROUND_CLOSEST(symbol_rate * 16384, 1000);
376 	if ((reg_value == 0) || (reg_value > 0xFFFFF)) {
377 		dev_err(&priv->i2c->dev,
378 			"%s(): reg_value is out of range\n", __func__);
379 		return -EINVAL;
380 	}
381 	data[0] = (u8)((reg_value >> 16) & 0x0F);
382 	data[1] = (u8)((reg_value >>  8) & 0xFF);
383 	data[2] = (u8)(reg_value & 0xFF);
384 	/* Set SLV-T Bank : 0xAE */
385 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xae);
386 	cxd2841er_write_regs(priv, I2C_SLVT, 0x20, data, 3);
387 	return 0;
388 }
389 
390 static void cxd2841er_set_ts_clock_mode(struct cxd2841er_priv *priv,
391 					u8 system);
392 
393 static int cxd2841er_sleep_s_to_active_s(struct cxd2841er_priv *priv,
394 					 u8 system, u32 symbol_rate)
395 {
396 	int ret;
397 	u8 data[4] = { 0, 0, 0, 0 };
398 
399 	if (priv->state != STATE_SLEEP_S) {
400 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
401 			__func__, (int)priv->state);
402 		return -EINVAL;
403 	}
404 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
405 	cxd2841er_set_ts_clock_mode(priv, SYS_DVBS);
406 	/* Set demod mode */
407 	if (system == SYS_DVBS) {
408 		data[0] = 0x0A;
409 	} else if (system == SYS_DVBS2) {
410 		data[0] = 0x0B;
411 	} else {
412 		dev_err(&priv->i2c->dev, "%s(): invalid delsys %d\n",
413 			__func__, system);
414 		return -EINVAL;
415 	}
416 	/* Set SLV-X Bank : 0x00 */
417 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
418 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, data[0]);
419 	/* DVB-S/S2 */
420 	data[0] = 0x00;
421 	/* Set SLV-T Bank : 0x00 */
422 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
423 	/* Enable S/S2 auto detection 1 */
424 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2d, data[0]);
425 	/* Set SLV-T Bank : 0xAE */
426 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xae);
427 	/* Enable S/S2 auto detection 2 */
428 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, data[0]);
429 	/* Set SLV-T Bank : 0x00 */
430 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
431 	/* Enable demod clock */
432 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x01);
433 	/* Enable ADC clock */
434 	cxd2841er_write_reg(priv, I2C_SLVT, 0x31, 0x01);
435 	/* Enable ADC 1 */
436 	cxd2841er_write_reg(priv, I2C_SLVT, 0x63, 0x16);
437 	/* Enable ADC 2 */
438 	cxd2841er_write_reg(priv, I2C_SLVT, 0x65, 0x3f);
439 	/* Set SLV-X Bank : 0x00 */
440 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
441 	/* Enable ADC 3 */
442 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x00);
443 	/* Set SLV-T Bank : 0xA3 */
444 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa3);
445 	cxd2841er_write_reg(priv, I2C_SLVT, 0xac, 0x00);
446 	data[0] = 0x07;
447 	data[1] = 0x3B;
448 	data[2] = 0x08;
449 	data[3] = 0xC5;
450 	/* Set SLV-T Bank : 0xAB */
451 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xab);
452 	cxd2841er_write_regs(priv, I2C_SLVT, 0x98, data, 4);
453 	data[0] = 0x05;
454 	data[1] = 0x80;
455 	data[2] = 0x0A;
456 	data[3] = 0x80;
457 	cxd2841er_write_regs(priv, I2C_SLVT, 0xa8, data, 4);
458 	data[0] = 0x0C;
459 	data[1] = 0xCC;
460 	cxd2841er_write_regs(priv, I2C_SLVT, 0xc3, data, 2);
461 	/* Set demod parameter */
462 	ret = cxd2841er_dvbs2_set_symbol_rate(priv, symbol_rate);
463 	if (ret != 0)
464 		return ret;
465 	/* Set SLV-T Bank : 0x00 */
466 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
467 	/* disable Hi-Z setting 1 */
468 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x10);
469 	/* disable Hi-Z setting 2 */
470 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0x00);
471 	priv->state = STATE_ACTIVE_S;
472 	return 0;
473 }
474 
475 static int cxd2841er_sleep_tc_to_active_t_band(struct cxd2841er_priv *priv,
476 					       u32 bandwidth);
477 
478 static int cxd2841er_sleep_tc_to_active_t2_band(struct cxd2841er_priv *priv,
479 						u32 bandwidth);
480 
481 static int cxd2841er_sleep_tc_to_active_c_band(struct cxd2841er_priv *priv,
482 					       u32 bandwidth);
483 
484 static int cxd2841er_sleep_tc_to_active_i(struct cxd2841er_priv *priv,
485 		u32 bandwidth);
486 
487 static int cxd2841er_active_i_to_sleep_tc(struct cxd2841er_priv *priv);
488 
489 static int cxd2841er_sleep_tc_to_shutdown(struct cxd2841er_priv *priv);
490 
491 static int cxd2841er_shutdown_to_sleep_tc(struct cxd2841er_priv *priv);
492 
493 static int cxd2841er_sleep_tc(struct dvb_frontend *fe);
494 
495 static int cxd2841er_retune_active(struct cxd2841er_priv *priv,
496 				   struct dtv_frontend_properties *p)
497 {
498 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
499 	if (priv->state != STATE_ACTIVE_S &&
500 			priv->state != STATE_ACTIVE_TC) {
501 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
502 			__func__, priv->state);
503 		return -EINVAL;
504 	}
505 	/* Set SLV-T Bank : 0x00 */
506 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
507 	/* disable TS output */
508 	cxd2841er_write_reg(priv, I2C_SLVT, 0xc3, 0x01);
509 	if (priv->state == STATE_ACTIVE_S)
510 		return cxd2841er_dvbs2_set_symbol_rate(
511 				priv, p->symbol_rate / 1000);
512 	else if (priv->state == STATE_ACTIVE_TC) {
513 		switch (priv->system) {
514 		case SYS_DVBT:
515 			return cxd2841er_sleep_tc_to_active_t_band(
516 					priv, p->bandwidth_hz);
517 		case SYS_DVBT2:
518 			return cxd2841er_sleep_tc_to_active_t2_band(
519 					priv, p->bandwidth_hz);
520 		case SYS_DVBC_ANNEX_A:
521 			return cxd2841er_sleep_tc_to_active_c_band(
522 					priv, p->bandwidth_hz);
523 		case SYS_ISDBT:
524 			cxd2841er_active_i_to_sleep_tc(priv);
525 			cxd2841er_sleep_tc_to_shutdown(priv);
526 			cxd2841er_shutdown_to_sleep_tc(priv);
527 			return cxd2841er_sleep_tc_to_active_i(
528 					priv, p->bandwidth_hz);
529 		}
530 	}
531 	dev_dbg(&priv->i2c->dev, "%s(): invalid delivery system %d\n",
532 		__func__, priv->system);
533 	return -EINVAL;
534 }
535 
536 static int cxd2841er_active_s_to_sleep_s(struct cxd2841er_priv *priv)
537 {
538 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
539 	if (priv->state != STATE_ACTIVE_S) {
540 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
541 			__func__, priv->state);
542 		return -EINVAL;
543 	}
544 	/* Set SLV-T Bank : 0x00 */
545 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
546 	/* disable TS output */
547 	cxd2841er_write_reg(priv, I2C_SLVT, 0xc3, 0x01);
548 	/* enable Hi-Z setting 1 */
549 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x1f);
550 	/* enable Hi-Z setting 2 */
551 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0xff);
552 	/* Set SLV-X Bank : 0x00 */
553 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
554 	/* disable ADC 1 */
555 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x01);
556 	/* Set SLV-T Bank : 0x00 */
557 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
558 	/* disable ADC clock */
559 	cxd2841er_write_reg(priv, I2C_SLVT, 0x31, 0x00);
560 	/* disable ADC 2 */
561 	cxd2841er_write_reg(priv, I2C_SLVT, 0x63, 0x16);
562 	/* disable ADC 3 */
563 	cxd2841er_write_reg(priv, I2C_SLVT, 0x65, 0x27);
564 	/* SADC Bias ON */
565 	cxd2841er_write_reg(priv, I2C_SLVT, 0x69, 0x06);
566 	/* disable demod clock */
567 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x00);
568 	/* Set SLV-T Bank : 0xAE */
569 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xae);
570 	/* disable S/S2 auto detection1 */
571 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
572 	/* Set SLV-T Bank : 0x00 */
573 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
574 	/* disable S/S2 auto detection2 */
575 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2d, 0x00);
576 	priv->state = STATE_SLEEP_S;
577 	return 0;
578 }
579 
580 static int cxd2841er_sleep_s_to_shutdown(struct cxd2841er_priv *priv)
581 {
582 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
583 	if (priv->state != STATE_SLEEP_S) {
584 		dev_dbg(&priv->i2c->dev, "%s(): invalid demod state %d\n",
585 			__func__, priv->state);
586 		return -EINVAL;
587 	}
588 	/* Set SLV-T Bank : 0x00 */
589 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
590 	/* Disable DSQOUT */
591 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x3f);
592 	/* Disable DSQIN */
593 	cxd2841er_write_reg(priv, I2C_SLVT, 0x9c, 0x00);
594 	/* Set SLV-X Bank : 0x00 */
595 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
596 	/* Disable oscillator */
597 	cxd2841er_write_reg(priv, I2C_SLVX, 0x15, 0x01);
598 	/* Set demod mode */
599 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, 0x01);
600 	priv->state = STATE_SHUTDOWN;
601 	return 0;
602 }
603 
604 static int cxd2841er_sleep_tc_to_shutdown(struct cxd2841er_priv *priv)
605 {
606 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
607 	if (priv->state != STATE_SLEEP_TC) {
608 		dev_dbg(&priv->i2c->dev, "%s(): invalid demod state %d\n",
609 			__func__, priv->state);
610 		return -EINVAL;
611 	}
612 	/* Set SLV-X Bank : 0x00 */
613 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
614 	/* Disable oscillator */
615 	cxd2841er_write_reg(priv, I2C_SLVX, 0x15, 0x01);
616 	/* Set demod mode */
617 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, 0x01);
618 	priv->state = STATE_SHUTDOWN;
619 	return 0;
620 }
621 
622 static int cxd2841er_active_t_to_sleep_tc(struct cxd2841er_priv *priv)
623 {
624 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
625 	if (priv->state != STATE_ACTIVE_TC) {
626 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
627 			__func__, priv->state);
628 		return -EINVAL;
629 	}
630 	/* Set SLV-T Bank : 0x00 */
631 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
632 	/* disable TS output */
633 	cxd2841er_write_reg(priv, I2C_SLVT, 0xc3, 0x01);
634 	/* enable Hi-Z setting 1 */
635 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x3f);
636 	/* enable Hi-Z setting 2 */
637 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0xff);
638 	/* Set SLV-X Bank : 0x00 */
639 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
640 	/* disable ADC 1 */
641 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x01);
642 	/* Set SLV-T Bank : 0x00 */
643 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
644 	/* Disable ADC 2 */
645 	cxd2841er_write_reg(priv, I2C_SLVT, 0x43, 0x0a);
646 	/* Disable ADC 3 */
647 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x0a);
648 	/* Disable ADC clock */
649 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
650 	/* Disable RF level monitor */
651 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x00);
652 	/* Disable demod clock */
653 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x00);
654 	priv->state = STATE_SLEEP_TC;
655 	return 0;
656 }
657 
658 static int cxd2841er_active_t2_to_sleep_tc(struct cxd2841er_priv *priv)
659 {
660 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
661 	if (priv->state != STATE_ACTIVE_TC) {
662 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
663 			__func__, priv->state);
664 		return -EINVAL;
665 	}
666 	/* Set SLV-T Bank : 0x00 */
667 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
668 	/* disable TS output */
669 	cxd2841er_write_reg(priv, I2C_SLVT, 0xc3, 0x01);
670 	/* enable Hi-Z setting 1 */
671 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x3f);
672 	/* enable Hi-Z setting 2 */
673 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0xff);
674 	/* Cancel DVB-T2 setting */
675 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x13);
676 	cxd2841er_write_reg(priv, I2C_SLVT, 0x83, 0x40);
677 	cxd2841er_write_reg(priv, I2C_SLVT, 0x86, 0x21);
678 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x9e, 0x09, 0x0f);
679 	cxd2841er_write_reg(priv, I2C_SLVT, 0x9f, 0xfb);
680 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2a);
681 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x38, 0x00, 0x0f);
682 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2b);
683 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x11, 0x00, 0x3f);
684 	/* Set SLV-X Bank : 0x00 */
685 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
686 	/* disable ADC 1 */
687 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x01);
688 	/* Set SLV-T Bank : 0x00 */
689 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
690 	/* Disable ADC 2 */
691 	cxd2841er_write_reg(priv, I2C_SLVT, 0x43, 0x0a);
692 	/* Disable ADC 3 */
693 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x0a);
694 	/* Disable ADC clock */
695 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
696 	/* Disable RF level monitor */
697 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x00);
698 	/* Disable demod clock */
699 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x00);
700 	priv->state = STATE_SLEEP_TC;
701 	return 0;
702 }
703 
704 static int cxd2841er_active_c_to_sleep_tc(struct cxd2841er_priv *priv)
705 {
706 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
707 	if (priv->state != STATE_ACTIVE_TC) {
708 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
709 			__func__, priv->state);
710 		return -EINVAL;
711 	}
712 	/* Set SLV-T Bank : 0x00 */
713 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
714 	/* disable TS output */
715 	cxd2841er_write_reg(priv, I2C_SLVT, 0xc3, 0x01);
716 	/* enable Hi-Z setting 1 */
717 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x3f);
718 	/* enable Hi-Z setting 2 */
719 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0xff);
720 	/* Cancel DVB-C setting */
721 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x11);
722 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xa3, 0x00, 0x1f);
723 	/* Set SLV-X Bank : 0x00 */
724 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
725 	/* disable ADC 1 */
726 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x01);
727 	/* Set SLV-T Bank : 0x00 */
728 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
729 	/* Disable ADC 2 */
730 	cxd2841er_write_reg(priv, I2C_SLVT, 0x43, 0x0a);
731 	/* Disable ADC 3 */
732 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x0a);
733 	/* Disable ADC clock */
734 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
735 	/* Disable RF level monitor */
736 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x00);
737 	/* Disable demod clock */
738 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x00);
739 	priv->state = STATE_SLEEP_TC;
740 	return 0;
741 }
742 
743 static int cxd2841er_active_i_to_sleep_tc(struct cxd2841er_priv *priv)
744 {
745 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
746 	if (priv->state != STATE_ACTIVE_TC) {
747 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
748 				__func__, priv->state);
749 		return -EINVAL;
750 	}
751 	/* Set SLV-T Bank : 0x00 */
752 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
753 	/* disable TS output */
754 	cxd2841er_write_reg(priv, I2C_SLVT, 0xc3, 0x01);
755 	/* enable Hi-Z setting 1 */
756 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x3f);
757 	/* enable Hi-Z setting 2 */
758 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0xff);
759 
760 	/* TODO: Cancel demod parameter */
761 
762 	/* Set SLV-X Bank : 0x00 */
763 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
764 	/* disable ADC 1 */
765 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x01);
766 	/* Set SLV-T Bank : 0x00 */
767 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
768 	/* Disable ADC 2 */
769 	cxd2841er_write_reg(priv, I2C_SLVT, 0x43, 0x0a);
770 	/* Disable ADC 3 */
771 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x0a);
772 	/* Disable ADC clock */
773 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
774 	/* Disable RF level monitor */
775 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x00);
776 	/* Disable demod clock */
777 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x00);
778 	priv->state = STATE_SLEEP_TC;
779 	return 0;
780 }
781 
782 static int cxd2841er_shutdown_to_sleep_s(struct cxd2841er_priv *priv)
783 {
784 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
785 	if (priv->state != STATE_SHUTDOWN) {
786 		dev_dbg(&priv->i2c->dev, "%s(): invalid demod state %d\n",
787 			__func__, priv->state);
788 		return -EINVAL;
789 	}
790 	/* Set SLV-X Bank : 0x00 */
791 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
792 	/* Clear all demodulator registers */
793 	cxd2841er_write_reg(priv, I2C_SLVX, 0x02, 0x00);
794 	usleep_range(3000, 5000);
795 	/* Set SLV-X Bank : 0x00 */
796 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
797 	/* Set demod SW reset */
798 	cxd2841er_write_reg(priv, I2C_SLVX, 0x10, 0x01);
799 
800 	switch (priv->xtal) {
801 	case SONY_XTAL_20500:
802 		cxd2841er_write_reg(priv, I2C_SLVX, 0x14, 0x00);
803 		break;
804 	case SONY_XTAL_24000:
805 		/* Select demod frequency */
806 		cxd2841er_write_reg(priv, I2C_SLVX, 0x12, 0x00);
807 		cxd2841er_write_reg(priv, I2C_SLVX, 0x14, 0x03);
808 		break;
809 	case SONY_XTAL_41000:
810 		cxd2841er_write_reg(priv, I2C_SLVX, 0x14, 0x01);
811 		break;
812 	default:
813 		dev_dbg(&priv->i2c->dev, "%s(): invalid demod xtal %d\n",
814 				__func__, priv->xtal);
815 		return -EINVAL;
816 	}
817 
818 	/* Set demod mode */
819 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, 0x0a);
820 	/* Clear demod SW reset */
821 	cxd2841er_write_reg(priv, I2C_SLVX, 0x10, 0x00);
822 	usleep_range(1000, 2000);
823 	/* Set SLV-T Bank : 0x00 */
824 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
825 	/* enable DSQOUT */
826 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x1F);
827 	/* enable DSQIN */
828 	cxd2841er_write_reg(priv, I2C_SLVT, 0x9C, 0x40);
829 	/* TADC Bias On */
830 	cxd2841er_write_reg(priv, I2C_SLVT, 0x43, 0x0a);
831 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x0a);
832 	/* SADC Bias On */
833 	cxd2841er_write_reg(priv, I2C_SLVT, 0x63, 0x16);
834 	cxd2841er_write_reg(priv, I2C_SLVT, 0x65, 0x27);
835 	cxd2841er_write_reg(priv, I2C_SLVT, 0x69, 0x06);
836 	priv->state = STATE_SLEEP_S;
837 	return 0;
838 }
839 
840 static int cxd2841er_shutdown_to_sleep_tc(struct cxd2841er_priv *priv)
841 {
842 	u8 data = 0;
843 
844 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
845 	if (priv->state != STATE_SHUTDOWN) {
846 		dev_dbg(&priv->i2c->dev, "%s(): invalid demod state %d\n",
847 			__func__, priv->state);
848 		return -EINVAL;
849 	}
850 	/* Set SLV-X Bank : 0x00 */
851 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
852 	/* Clear all demodulator registers */
853 	cxd2841er_write_reg(priv, I2C_SLVX, 0x02, 0x00);
854 	usleep_range(3000, 5000);
855 	/* Set SLV-X Bank : 0x00 */
856 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
857 	/* Set demod SW reset */
858 	cxd2841er_write_reg(priv, I2C_SLVX, 0x10, 0x01);
859   /* Select ADC clock mode */
860 	cxd2841er_write_reg(priv, I2C_SLVX, 0x13, 0x00);
861 
862 	switch (priv->xtal) {
863 	case SONY_XTAL_20500:
864 		data = 0x0;
865 		break;
866 	case SONY_XTAL_24000:
867 		/* Select demod frequency */
868 		cxd2841er_write_reg(priv, I2C_SLVX, 0x12, 0x00);
869 		data = 0x3;
870 		break;
871 	case SONY_XTAL_41000:
872 		cxd2841er_write_reg(priv, I2C_SLVX, 0x12, 0x00);
873 		data = 0x1;
874 		break;
875 	}
876 	cxd2841er_write_reg(priv, I2C_SLVX, 0x14, data);
877 	/* Clear demod SW reset */
878 	cxd2841er_write_reg(priv, I2C_SLVX, 0x10, 0x00);
879 	usleep_range(1000, 2000);
880 	/* Set SLV-T Bank : 0x00 */
881 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
882 	/* TADC Bias On */
883 	cxd2841er_write_reg(priv, I2C_SLVT, 0x43, 0x0a);
884 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x0a);
885 	/* SADC Bias On */
886 	cxd2841er_write_reg(priv, I2C_SLVT, 0x63, 0x16);
887 	cxd2841er_write_reg(priv, I2C_SLVT, 0x65, 0x27);
888 	cxd2841er_write_reg(priv, I2C_SLVT, 0x69, 0x06);
889 	priv->state = STATE_SLEEP_TC;
890 	return 0;
891 }
892 
893 static int cxd2841er_tune_done(struct cxd2841er_priv *priv)
894 {
895 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
896 	/* Set SLV-T Bank : 0x00 */
897 	cxd2841er_write_reg(priv, I2C_SLVT, 0, 0);
898 	/* SW Reset */
899 	cxd2841er_write_reg(priv, I2C_SLVT, 0xfe, 0x01);
900 	/* Enable TS output */
901 	cxd2841er_write_reg(priv, I2C_SLVT, 0xc3, 0x00);
902 	return 0;
903 }
904 
905 /* Set TS parallel mode */
906 static void cxd2841er_set_ts_clock_mode(struct cxd2841er_priv *priv,
907 					u8 system)
908 {
909 	u8 serial_ts, ts_rate_ctrl_off, ts_in_off;
910 
911 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
912 	/* Set SLV-T Bank : 0x00 */
913 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
914 	cxd2841er_read_reg(priv, I2C_SLVT, 0xc4, &serial_ts);
915 	cxd2841er_read_reg(priv, I2C_SLVT, 0xd3, &ts_rate_ctrl_off);
916 	cxd2841er_read_reg(priv, I2C_SLVT, 0xde, &ts_in_off);
917 	dev_dbg(&priv->i2c->dev, "%s(): ser_ts=0x%02x rate_ctrl_off=0x%02x in_off=0x%02x\n",
918 		__func__, serial_ts, ts_rate_ctrl_off, ts_in_off);
919 
920 	/*
921 	 * slave    Bank    Addr    Bit    default    Name
922 	 * <SLV-T>  00h     C4h     [1:0]  2'b??      OSERCKMODE
923 	 */
924 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xc4,
925 		((priv->flags & CXD2841ER_TS_SERIAL) ? 0x01 : 0x00), 0x03);
926 	/*
927 	 * slave    Bank    Addr    Bit    default    Name
928 	 * <SLV-T>  00h     D1h     [1:0]  2'b??      OSERDUTYMODE
929 	 */
930 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xd1,
931 		((priv->flags & CXD2841ER_TS_SERIAL) ? 0x01 : 0x00), 0x03);
932 	/*
933 	 * slave    Bank    Addr    Bit    default    Name
934 	 * <SLV-T>  00h     D9h     [7:0]  8'h08      OTSCKPERIOD
935 	 */
936 	cxd2841er_write_reg(priv, I2C_SLVT, 0xd9, 0x08);
937 	/*
938 	 * Disable TS IF Clock
939 	 * slave    Bank    Addr    Bit    default    Name
940 	 * <SLV-T>  00h     32h     [0]    1'b1       OREG_CK_TSIF_EN
941 	 */
942 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x32, 0x00, 0x01);
943 	/*
944 	 * slave    Bank    Addr    Bit    default    Name
945 	 * <SLV-T>  00h     33h     [1:0]  2'b01      OREG_CKSEL_TSIF
946 	 */
947 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x33,
948 		((priv->flags & CXD2841ER_TS_SERIAL) ? 0x01 : 0x00), 0x03);
949 	/*
950 	 * Enable TS IF Clock
951 	 * slave    Bank    Addr    Bit    default    Name
952 	 * <SLV-T>  00h     32h     [0]    1'b1       OREG_CK_TSIF_EN
953 	 */
954 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x32, 0x01, 0x01);
955 
956 	if (system == SYS_DVBT) {
957 		/* Enable parity period for DVB-T */
958 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
959 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x66, 0x01, 0x01);
960 	} else if (system == SYS_DVBC_ANNEX_A) {
961 		/* Enable parity period for DVB-C */
962 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
963 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x66, 0x01, 0x01);
964 	}
965 }
966 
967 static u8 cxd2841er_chip_id(struct cxd2841er_priv *priv)
968 {
969 	u8 chip_id = 0;
970 
971 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
972 	if (cxd2841er_write_reg(priv, I2C_SLVT, 0, 0) == 0)
973 		cxd2841er_read_reg(priv, I2C_SLVT, 0xfd, &chip_id);
974 	else if (cxd2841er_write_reg(priv, I2C_SLVX, 0, 0) == 0)
975 		cxd2841er_read_reg(priv, I2C_SLVX, 0xfd, &chip_id);
976 
977 	return chip_id;
978 }
979 
980 static int cxd2841er_read_status_s(struct dvb_frontend *fe,
981 				   enum fe_status *status)
982 {
983 	u8 reg = 0;
984 	struct cxd2841er_priv *priv = fe->demodulator_priv;
985 
986 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
987 	*status = 0;
988 	if (priv->state != STATE_ACTIVE_S) {
989 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
990 			__func__, priv->state);
991 		return -EINVAL;
992 	}
993 	/* Set SLV-T Bank : 0xA0 */
994 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa0);
995 	/*
996 	 *  slave     Bank      Addr      Bit      Signal name
997 	 * <SLV-T>    A0h       11h       [2]      ITSLOCK
998 	 */
999 	cxd2841er_read_reg(priv, I2C_SLVT, 0x11, &reg);
1000 	if (reg & 0x04) {
1001 		*status = FE_HAS_SIGNAL
1002 			| FE_HAS_CARRIER
1003 			| FE_HAS_VITERBI
1004 			| FE_HAS_SYNC
1005 			| FE_HAS_LOCK;
1006 	}
1007 	dev_dbg(&priv->i2c->dev, "%s(): result 0x%x\n", __func__, *status);
1008 	return 0;
1009 }
1010 
1011 static int cxd2841er_read_status_t_t2(struct cxd2841er_priv *priv,
1012 				      u8 *sync, u8 *tslock, u8 *unlock)
1013 {
1014 	u8 data = 0;
1015 
1016 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1017 	if (priv->state != STATE_ACTIVE_TC)
1018 		return -EINVAL;
1019 	if (priv->system == SYS_DVBT) {
1020 		/* Set SLV-T Bank : 0x10 */
1021 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
1022 	} else {
1023 		/* Set SLV-T Bank : 0x20 */
1024 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x20);
1025 	}
1026 	cxd2841er_read_reg(priv, I2C_SLVT, 0x10, &data);
1027 	if ((data & 0x07) == 0x07) {
1028 		dev_dbg(&priv->i2c->dev,
1029 			"%s(): invalid hardware state detected\n", __func__);
1030 		*sync = 0;
1031 		*tslock = 0;
1032 		*unlock = 0;
1033 	} else {
1034 		*sync = ((data & 0x07) == 0x6 ? 1 : 0);
1035 		*tslock = ((data & 0x20) ? 1 : 0);
1036 		*unlock = ((data & 0x10) ? 1 : 0);
1037 	}
1038 	return 0;
1039 }
1040 
1041 static int cxd2841er_read_status_c(struct cxd2841er_priv *priv, u8 *tslock)
1042 {
1043 	u8 data;
1044 
1045 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1046 	if (priv->state != STATE_ACTIVE_TC)
1047 		return -EINVAL;
1048 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
1049 	cxd2841er_read_reg(priv, I2C_SLVT, 0x88, &data);
1050 	if ((data & 0x01) == 0) {
1051 		*tslock = 0;
1052 	} else {
1053 		cxd2841er_read_reg(priv, I2C_SLVT, 0x10, &data);
1054 		*tslock = ((data & 0x20) ? 1 : 0);
1055 	}
1056 	return 0;
1057 }
1058 
1059 static int cxd2841er_read_status_i(struct cxd2841er_priv *priv,
1060 		u8 *sync, u8 *tslock, u8 *unlock)
1061 {
1062 	u8 data = 0;
1063 
1064 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1065 	if (priv->state != STATE_ACTIVE_TC)
1066 		return -EINVAL;
1067 	/* Set SLV-T Bank : 0x60 */
1068 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60);
1069 	cxd2841er_read_reg(priv, I2C_SLVT, 0x10, &data);
1070 	dev_dbg(&priv->i2c->dev,
1071 			"%s(): lock=0x%x\n", __func__, data);
1072 	*sync = ((data & 0x02) ? 1 : 0);
1073 	*tslock = ((data & 0x01) ? 1 : 0);
1074 	*unlock = ((data & 0x10) ? 1 : 0);
1075 	return 0;
1076 }
1077 
1078 static int cxd2841er_read_status_tc(struct dvb_frontend *fe,
1079 				    enum fe_status *status)
1080 {
1081 	int ret = 0;
1082 	u8 sync = 0;
1083 	u8 tslock = 0;
1084 	u8 unlock = 0;
1085 	struct cxd2841er_priv *priv = fe->demodulator_priv;
1086 
1087 	*status = 0;
1088 	if (priv->state == STATE_ACTIVE_TC) {
1089 		if (priv->system == SYS_DVBT || priv->system == SYS_DVBT2) {
1090 			ret = cxd2841er_read_status_t_t2(
1091 				priv, &sync, &tslock, &unlock);
1092 			if (ret)
1093 				goto done;
1094 			if (unlock)
1095 				goto done;
1096 			if (sync)
1097 				*status = FE_HAS_SIGNAL |
1098 					FE_HAS_CARRIER |
1099 					FE_HAS_VITERBI |
1100 					FE_HAS_SYNC;
1101 			if (tslock)
1102 				*status |= FE_HAS_LOCK;
1103 		} else if (priv->system == SYS_ISDBT) {
1104 			ret = cxd2841er_read_status_i(
1105 					priv, &sync, &tslock, &unlock);
1106 			if (ret)
1107 				goto done;
1108 			if (unlock)
1109 				goto done;
1110 			if (sync)
1111 				*status = FE_HAS_SIGNAL |
1112 					FE_HAS_CARRIER |
1113 					FE_HAS_VITERBI |
1114 					FE_HAS_SYNC;
1115 			if (tslock)
1116 				*status |= FE_HAS_LOCK;
1117 		} else if (priv->system == SYS_DVBC_ANNEX_A) {
1118 			ret = cxd2841er_read_status_c(priv, &tslock);
1119 			if (ret)
1120 				goto done;
1121 			if (tslock)
1122 				*status = FE_HAS_SIGNAL |
1123 					FE_HAS_CARRIER |
1124 					FE_HAS_VITERBI |
1125 					FE_HAS_SYNC |
1126 					FE_HAS_LOCK;
1127 		}
1128 	}
1129 done:
1130 	dev_dbg(&priv->i2c->dev, "%s(): status 0x%x\n", __func__, *status);
1131 	return ret;
1132 }
1133 
1134 static int cxd2841er_get_carrier_offset_s_s2(struct cxd2841er_priv *priv,
1135 					     int *offset)
1136 {
1137 	u8 data[3];
1138 	u8 is_hs_mode;
1139 	s32 cfrl_ctrlval;
1140 	s32 temp_div, temp_q, temp_r;
1141 
1142 	if (priv->state != STATE_ACTIVE_S) {
1143 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1144 			__func__, priv->state);
1145 		return -EINVAL;
1146 	}
1147 	/*
1148 	 * Get High Sampling Rate mode
1149 	 *  slave     Bank      Addr      Bit      Signal name
1150 	 * <SLV-T>    A0h       10h       [0]      ITRL_LOCK
1151 	 */
1152 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa0);
1153 	cxd2841er_read_reg(priv, I2C_SLVT, 0x10, &data[0]);
1154 	if (data[0] & 0x01) {
1155 		/*
1156 		 *  slave     Bank      Addr      Bit      Signal name
1157 		 * <SLV-T>    A0h       50h       [4]      IHSMODE
1158 		 */
1159 		cxd2841er_read_reg(priv, I2C_SLVT, 0x50, &data[0]);
1160 		is_hs_mode = (data[0] & 0x10 ? 1 : 0);
1161 	} else {
1162 		dev_dbg(&priv->i2c->dev,
1163 			"%s(): unable to detect sampling rate mode\n",
1164 			__func__);
1165 		return -EINVAL;
1166 	}
1167 	/*
1168 	 *  slave     Bank      Addr      Bit      Signal name
1169 	 * <SLV-T>    A0h       45h       [4:0]    ICFRL_CTRLVAL[20:16]
1170 	 * <SLV-T>    A0h       46h       [7:0]    ICFRL_CTRLVAL[15:8]
1171 	 * <SLV-T>    A0h       47h       [7:0]    ICFRL_CTRLVAL[7:0]
1172 	 */
1173 	cxd2841er_read_regs(priv, I2C_SLVT, 0x45, data, 3);
1174 	cfrl_ctrlval = sign_extend32((((u32)data[0] & 0x1F) << 16) |
1175 				(((u32)data[1] & 0xFF) <<  8) |
1176 				((u32)data[2] & 0xFF), 20);
1177 	temp_div = (is_hs_mode ? 1048576 : 1572864);
1178 	if (cfrl_ctrlval > 0) {
1179 		temp_q = div_s64_rem(97375LL * cfrl_ctrlval,
1180 			temp_div, &temp_r);
1181 	} else {
1182 		temp_q = div_s64_rem(-97375LL * cfrl_ctrlval,
1183 			temp_div, &temp_r);
1184 	}
1185 	if (temp_r >= temp_div / 2)
1186 		temp_q++;
1187 	if (cfrl_ctrlval > 0)
1188 		temp_q *= -1;
1189 	*offset = temp_q;
1190 	return 0;
1191 }
1192 
1193 static int cxd2841er_get_carrier_offset_i(struct cxd2841er_priv *priv,
1194 					   u32 bandwidth, int *offset)
1195 {
1196 	u8 data[4];
1197 
1198 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1199 	if (priv->state != STATE_ACTIVE_TC) {
1200 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1201 			__func__, priv->state);
1202 		return -EINVAL;
1203 	}
1204 	if (priv->system != SYS_ISDBT) {
1205 		dev_dbg(&priv->i2c->dev, "%s(): invalid delivery system %d\n",
1206 			__func__, priv->system);
1207 		return -EINVAL;
1208 	}
1209 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60);
1210 	cxd2841er_read_regs(priv, I2C_SLVT, 0x4c, data, sizeof(data));
1211 	*offset = -1 * sign_extend32(
1212 		((u32)(data[0] & 0x1F) << 24) | ((u32)data[1] << 16) |
1213 		((u32)data[2] << 8) | (u32)data[3], 29);
1214 
1215 	switch (bandwidth) {
1216 	case 6000000:
1217 		*offset = -1 * ((*offset) * 8/264);
1218 		break;
1219 	case 7000000:
1220 		*offset = -1 * ((*offset) * 8/231);
1221 		break;
1222 	case 8000000:
1223 		*offset = -1 * ((*offset) * 8/198);
1224 		break;
1225 	default:
1226 		dev_dbg(&priv->i2c->dev, "%s(): invalid bandwidth %d\n",
1227 				__func__, bandwidth);
1228 		return -EINVAL;
1229 	}
1230 
1231 	dev_dbg(&priv->i2c->dev, "%s(): bandwidth %d offset %d\n",
1232 			__func__, bandwidth, *offset);
1233 
1234 	return 0;
1235 }
1236 
1237 static int cxd2841er_get_carrier_offset_t(struct cxd2841er_priv *priv,
1238 					   u32 bandwidth, int *offset)
1239 {
1240 	u8 data[4];
1241 
1242 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1243 	if (priv->state != STATE_ACTIVE_TC) {
1244 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1245 			__func__, priv->state);
1246 		return -EINVAL;
1247 	}
1248 	if (priv->system != SYS_DVBT) {
1249 		dev_dbg(&priv->i2c->dev, "%s(): invalid delivery system %d\n",
1250 			__func__, priv->system);
1251 		return -EINVAL;
1252 	}
1253 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
1254 	cxd2841er_read_regs(priv, I2C_SLVT, 0x4c, data, sizeof(data));
1255 	*offset = -1 * sign_extend32(
1256 		((u32)(data[0] & 0x1F) << 24) | ((u32)data[1] << 16) |
1257 		((u32)data[2] << 8) | (u32)data[3], 29);
1258 	*offset *= (bandwidth / 1000000);
1259 	*offset /= 235;
1260 	return 0;
1261 }
1262 
1263 static int cxd2841er_get_carrier_offset_t2(struct cxd2841er_priv *priv,
1264 					   u32 bandwidth, int *offset)
1265 {
1266 	u8 data[4];
1267 
1268 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1269 	if (priv->state != STATE_ACTIVE_TC) {
1270 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1271 			__func__, priv->state);
1272 		return -EINVAL;
1273 	}
1274 	if (priv->system != SYS_DVBT2) {
1275 		dev_dbg(&priv->i2c->dev, "%s(): invalid delivery system %d\n",
1276 			__func__, priv->system);
1277 		return -EINVAL;
1278 	}
1279 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x20);
1280 	cxd2841er_read_regs(priv, I2C_SLVT, 0x4c, data, sizeof(data));
1281 	*offset = -1 * sign_extend32(
1282 		((u32)(data[0] & 0x0F) << 24) | ((u32)data[1] << 16) |
1283 		((u32)data[2] << 8) | (u32)data[3], 27);
1284 	switch (bandwidth) {
1285 	case 1712000:
1286 		*offset /= 582;
1287 		break;
1288 	case 5000000:
1289 	case 6000000:
1290 	case 7000000:
1291 	case 8000000:
1292 		*offset *= (bandwidth / 1000000);
1293 		*offset /= 940;
1294 		break;
1295 	default:
1296 		dev_dbg(&priv->i2c->dev, "%s(): invalid bandwidth %d\n",
1297 			__func__, bandwidth);
1298 		return -EINVAL;
1299 	}
1300 	return 0;
1301 }
1302 
1303 static int cxd2841er_get_carrier_offset_c(struct cxd2841er_priv *priv,
1304 					  int *offset)
1305 {
1306 	u8 data[2];
1307 
1308 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1309 	if (priv->state != STATE_ACTIVE_TC) {
1310 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1311 			__func__, priv->state);
1312 		return -EINVAL;
1313 	}
1314 	if (priv->system != SYS_DVBC_ANNEX_A) {
1315 		dev_dbg(&priv->i2c->dev, "%s(): invalid delivery system %d\n",
1316 			__func__, priv->system);
1317 		return -EINVAL;
1318 	}
1319 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
1320 	cxd2841er_read_regs(priv, I2C_SLVT, 0x15, data, sizeof(data));
1321 	*offset = div_s64(41000LL * sign_extend32((((u32)data[0] & 0x3f) << 8)
1322 						| (u32)data[1], 13), 16384);
1323 	return 0;
1324 }
1325 
1326 static int cxd2841er_read_packet_errors_c(
1327 		struct cxd2841er_priv *priv, u32 *penum)
1328 {
1329 	u8 data[3];
1330 
1331 	*penum = 0;
1332 	if (priv->state != STATE_ACTIVE_TC) {
1333 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1334 				__func__, priv->state);
1335 		return -EINVAL;
1336 	}
1337 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
1338 	cxd2841er_read_regs(priv, I2C_SLVT, 0xea, data, sizeof(data));
1339 	if (data[2] & 0x01)
1340 		*penum = ((u32)data[0] << 8) | (u32)data[1];
1341 	return 0;
1342 }
1343 
1344 static int cxd2841er_read_packet_errors_t(
1345 		struct cxd2841er_priv *priv, u32 *penum)
1346 {
1347 	u8 data[3];
1348 
1349 	*penum = 0;
1350 	if (priv->state != STATE_ACTIVE_TC) {
1351 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1352 			__func__, priv->state);
1353 		return -EINVAL;
1354 	}
1355 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
1356 	cxd2841er_read_regs(priv, I2C_SLVT, 0xea, data, sizeof(data));
1357 	if (data[2] & 0x01)
1358 		*penum = ((u32)data[0] << 8) | (u32)data[1];
1359 	return 0;
1360 }
1361 
1362 static int cxd2841er_read_packet_errors_t2(
1363 		struct cxd2841er_priv *priv, u32 *penum)
1364 {
1365 	u8 data[3];
1366 
1367 	*penum = 0;
1368 	if (priv->state != STATE_ACTIVE_TC) {
1369 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1370 			__func__, priv->state);
1371 		return -EINVAL;
1372 	}
1373 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x24);
1374 	cxd2841er_read_regs(priv, I2C_SLVT, 0xfd, data, sizeof(data));
1375 	if (data[0] & 0x01)
1376 		*penum = ((u32)data[1] << 8) | (u32)data[2];
1377 	return 0;
1378 }
1379 
1380 static int cxd2841er_read_packet_errors_i(
1381 		struct cxd2841er_priv *priv, u32 *penum)
1382 {
1383 	u8 data[2];
1384 
1385 	*penum = 0;
1386 	if (priv->state != STATE_ACTIVE_TC) {
1387 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1388 				__func__, priv->state);
1389 		return -EINVAL;
1390 	}
1391 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60);
1392 	cxd2841er_read_regs(priv, I2C_SLVT, 0xA1, data, 1);
1393 
1394 	if (!(data[0] & 0x01))
1395 		return 0;
1396 
1397 	/* Layer A */
1398 	cxd2841er_read_regs(priv, I2C_SLVT, 0xA2, data, sizeof(data));
1399 	*penum = ((u32)data[0] << 8) | (u32)data[1];
1400 
1401 	/* Layer B */
1402 	cxd2841er_read_regs(priv, I2C_SLVT, 0xA4, data, sizeof(data));
1403 	*penum += ((u32)data[0] << 8) | (u32)data[1];
1404 
1405 	/* Layer C */
1406 	cxd2841er_read_regs(priv, I2C_SLVT, 0xA6, data, sizeof(data));
1407 	*penum += ((u32)data[0] << 8) | (u32)data[1];
1408 
1409 	return 0;
1410 }
1411 
1412 static int cxd2841er_read_ber_c(struct cxd2841er_priv *priv,
1413 		u32 *bit_error, u32 *bit_count)
1414 {
1415 	u8 data[3];
1416 	u32 bit_err, period_exp;
1417 
1418 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1419 	if (priv->state != STATE_ACTIVE_TC) {
1420 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1421 				__func__, priv->state);
1422 		return -EINVAL;
1423 	}
1424 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
1425 	cxd2841er_read_regs(priv, I2C_SLVT, 0x62, data, sizeof(data));
1426 	if (!(data[0] & 0x80)) {
1427 		dev_dbg(&priv->i2c->dev,
1428 				"%s(): no valid BER data\n", __func__);
1429 		return -EINVAL;
1430 	}
1431 	bit_err = ((u32)(data[0] & 0x3f) << 16) |
1432 		((u32)data[1] << 8) |
1433 		(u32)data[2];
1434 	cxd2841er_read_reg(priv, I2C_SLVT, 0x60, data);
1435 	period_exp = data[0] & 0x1f;
1436 
1437 	if ((period_exp <= 11) && (bit_err > (1 << period_exp) * 204 * 8)) {
1438 		dev_dbg(&priv->i2c->dev,
1439 				"%s(): period_exp(%u) or bit_err(%u)  not in range. no valid BER data\n",
1440 				__func__, period_exp, bit_err);
1441 		return -EINVAL;
1442 	}
1443 
1444 	dev_dbg(&priv->i2c->dev,
1445 			"%s(): period_exp(%u) or bit_err(%u) count=%d\n",
1446 			__func__, period_exp, bit_err,
1447 			((1 << period_exp) * 204 * 8));
1448 
1449 	*bit_error = bit_err;
1450 	*bit_count = ((1 << period_exp) * 204 * 8);
1451 
1452 	return 0;
1453 }
1454 
1455 static int cxd2841er_read_ber_i(struct cxd2841er_priv *priv,
1456 		u32 *bit_error, u32 *bit_count)
1457 {
1458 	u8 data[3];
1459 	u8 pktnum[2];
1460 
1461 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1462 	if (priv->state != STATE_ACTIVE_TC) {
1463 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
1464 				__func__, priv->state);
1465 		return -EINVAL;
1466 	}
1467 
1468 	cxd2841er_freeze_regs(priv);
1469 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60);
1470 	cxd2841er_read_regs(priv, I2C_SLVT, 0x5B, pktnum, sizeof(pktnum));
1471 	cxd2841er_read_regs(priv, I2C_SLVT, 0x16, data, sizeof(data));
1472 	cxd2841er_unfreeze_regs(priv);
1473 
1474 	if (!pktnum[0] && !pktnum[1]) {
1475 		dev_dbg(&priv->i2c->dev,
1476 				"%s(): no valid BER data\n", __func__);
1477 		return -EINVAL;
1478 	}
1479 
1480 	*bit_error = ((u32)(data[0] & 0x7F) << 16) |
1481 		((u32)data[1] << 8) | data[2];
1482 	*bit_count = ((((u32)pktnum[0] << 8) | pktnum[1]) * 204 * 8);
1483 	dev_dbg(&priv->i2c->dev, "%s(): bit_error=%u bit_count=%u\n",
1484 			__func__, *bit_error, *bit_count);
1485 
1486 	return 0;
1487 }
1488 
1489 static int cxd2841er_mon_read_ber_s(struct cxd2841er_priv *priv,
1490 				    u32 *bit_error, u32 *bit_count)
1491 {
1492 	u8 data[11];
1493 
1494 	/* Set SLV-T Bank : 0xA0 */
1495 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa0);
1496 	/*
1497 	 *  slave     Bank      Addr      Bit      Signal name
1498 	 * <SLV-T>    A0h       35h       [0]      IFVBER_VALID
1499 	 * <SLV-T>    A0h       36h       [5:0]    IFVBER_BITERR[21:16]
1500 	 * <SLV-T>    A0h       37h       [7:0]    IFVBER_BITERR[15:8]
1501 	 * <SLV-T>    A0h       38h       [7:0]    IFVBER_BITERR[7:0]
1502 	 * <SLV-T>    A0h       3Dh       [5:0]    IFVBER_BITNUM[21:16]
1503 	 * <SLV-T>    A0h       3Eh       [7:0]    IFVBER_BITNUM[15:8]
1504 	 * <SLV-T>    A0h       3Fh       [7:0]    IFVBER_BITNUM[7:0]
1505 	 */
1506 	cxd2841er_read_regs(priv, I2C_SLVT, 0x35, data, 11);
1507 	if (data[0] & 0x01) {
1508 		*bit_error = ((u32)(data[1]  & 0x3F) << 16) |
1509 			     ((u32)(data[2]  & 0xFF) <<  8) |
1510 			     (u32)(data[3]  & 0xFF);
1511 		*bit_count = ((u32)(data[8]  & 0x3F) << 16) |
1512 			     ((u32)(data[9]  & 0xFF) <<  8) |
1513 			     (u32)(data[10] & 0xFF);
1514 		if ((*bit_count == 0) || (*bit_error > *bit_count)) {
1515 			dev_dbg(&priv->i2c->dev,
1516 				"%s(): invalid bit_error %d, bit_count %d\n",
1517 				__func__, *bit_error, *bit_count);
1518 			return -EINVAL;
1519 		}
1520 		return 0;
1521 	}
1522 	dev_dbg(&priv->i2c->dev, "%s(): no data available\n", __func__);
1523 	return -EINVAL;
1524 }
1525 
1526 
1527 static int cxd2841er_mon_read_ber_s2(struct cxd2841er_priv *priv,
1528 				     u32 *bit_error, u32 *bit_count)
1529 {
1530 	u8 data[5];
1531 	u32 period;
1532 
1533 	/* Set SLV-T Bank : 0xB2 */
1534 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xb2);
1535 	/*
1536 	 *  slave     Bank      Addr      Bit      Signal name
1537 	 * <SLV-T>    B2h       30h       [0]      IFLBER_VALID
1538 	 * <SLV-T>    B2h       31h       [3:0]    IFLBER_BITERR[27:24]
1539 	 * <SLV-T>    B2h       32h       [7:0]    IFLBER_BITERR[23:16]
1540 	 * <SLV-T>    B2h       33h       [7:0]    IFLBER_BITERR[15:8]
1541 	 * <SLV-T>    B2h       34h       [7:0]    IFLBER_BITERR[7:0]
1542 	 */
1543 	cxd2841er_read_regs(priv, I2C_SLVT, 0x30, data, 5);
1544 	if (data[0] & 0x01) {
1545 		/* Bit error count */
1546 		*bit_error = ((u32)(data[1] & 0x0F) << 24) |
1547 			     ((u32)(data[2] & 0xFF) << 16) |
1548 			     ((u32)(data[3] & 0xFF) <<  8) |
1549 			     (u32)(data[4] & 0xFF);
1550 
1551 		/* Set SLV-T Bank : 0xA0 */
1552 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa0);
1553 		cxd2841er_read_reg(priv, I2C_SLVT, 0x7a, data);
1554 		/* Measurement period */
1555 		period = (u32)(1 << (data[0] & 0x0F));
1556 		if (period == 0) {
1557 			dev_dbg(&priv->i2c->dev,
1558 				"%s(): period is 0\n", __func__);
1559 			return -EINVAL;
1560 		}
1561 		if (*bit_error > (period * 64800)) {
1562 			dev_dbg(&priv->i2c->dev,
1563 				"%s(): invalid bit_err 0x%x period 0x%x\n",
1564 				__func__, *bit_error, period);
1565 			return -EINVAL;
1566 		}
1567 		*bit_count = period * 64800;
1568 
1569 		return 0;
1570 	} else {
1571 		dev_dbg(&priv->i2c->dev,
1572 			"%s(): no data available\n", __func__);
1573 	}
1574 	return -EINVAL;
1575 }
1576 
1577 static int cxd2841er_read_ber_t2(struct cxd2841er_priv *priv,
1578 				 u32 *bit_error, u32 *bit_count)
1579 {
1580 	u8 data[4];
1581 	u32 period_exp, n_ldpc;
1582 
1583 	if (priv->state != STATE_ACTIVE_TC) {
1584 		dev_dbg(&priv->i2c->dev,
1585 			"%s(): invalid state %d\n", __func__, priv->state);
1586 		return -EINVAL;
1587 	}
1588 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x20);
1589 	cxd2841er_read_regs(priv, I2C_SLVT, 0x39, data, sizeof(data));
1590 	if (!(data[0] & 0x10)) {
1591 		dev_dbg(&priv->i2c->dev,
1592 			"%s(): no valid BER data\n", __func__);
1593 		return -EINVAL;
1594 	}
1595 	*bit_error = ((u32)(data[0] & 0x0f) << 24) |
1596 		     ((u32)data[1] << 16) |
1597 		     ((u32)data[2] << 8) |
1598 		     (u32)data[3];
1599 	cxd2841er_read_reg(priv, I2C_SLVT, 0x6f, data);
1600 	period_exp = data[0] & 0x0f;
1601 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x22);
1602 	cxd2841er_read_reg(priv, I2C_SLVT, 0x5e, data);
1603 	n_ldpc = ((data[0] & 0x03) == 0 ? 16200 : 64800);
1604 	if (*bit_error > ((1U << period_exp) * n_ldpc)) {
1605 		dev_dbg(&priv->i2c->dev,
1606 			"%s(): invalid BER value\n", __func__);
1607 		return -EINVAL;
1608 	}
1609 
1610 	/*
1611 	 * FIXME: the right thing would be to return bit_error untouched,
1612 	 * but, as we don't know the scale returned by the counters, let's
1613 	 * at least preserver BER = bit_error/bit_count.
1614 	 */
1615 	if (period_exp >= 4) {
1616 		*bit_count = (1U << (period_exp - 4)) * (n_ldpc / 200);
1617 		*bit_error *= 3125ULL;
1618 	} else {
1619 		*bit_count = (1U << period_exp) * (n_ldpc / 200);
1620 		*bit_error *= 50000ULL;
1621 	}
1622 	return 0;
1623 }
1624 
1625 static int cxd2841er_read_ber_t(struct cxd2841er_priv *priv,
1626 				u32 *bit_error, u32 *bit_count)
1627 {
1628 	u8 data[2];
1629 	u32 period;
1630 
1631 	if (priv->state != STATE_ACTIVE_TC) {
1632 		dev_dbg(&priv->i2c->dev,
1633 			"%s(): invalid state %d\n", __func__, priv->state);
1634 		return -EINVAL;
1635 	}
1636 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
1637 	cxd2841er_read_reg(priv, I2C_SLVT, 0x39, data);
1638 	if (!(data[0] & 0x01)) {
1639 		dev_dbg(&priv->i2c->dev,
1640 			"%s(): no valid BER data\n", __func__);
1641 		return 0;
1642 	}
1643 	cxd2841er_read_regs(priv, I2C_SLVT, 0x22, data, sizeof(data));
1644 	*bit_error = ((u32)data[0] << 8) | (u32)data[1];
1645 	cxd2841er_read_reg(priv, I2C_SLVT, 0x6f, data);
1646 	period = ((data[0] & 0x07) == 0) ? 256 : (4096 << (data[0] & 0x07));
1647 
1648 	/*
1649 	 * FIXME: the right thing would be to return bit_error untouched,
1650 	 * but, as we don't know the scale returned by the counters, let's
1651 	 * at least preserver BER = bit_error/bit_count.
1652 	 */
1653 	*bit_count = period / 128;
1654 	*bit_error *= 78125ULL;
1655 	return 0;
1656 }
1657 
1658 static int cxd2841er_freeze_regs(struct cxd2841er_priv *priv)
1659 {
1660 	/*
1661 	 * Freeze registers: ensure multiple separate register reads
1662 	 * are from the same snapshot
1663 	 */
1664 	cxd2841er_write_reg(priv, I2C_SLVT, 0x01, 0x01);
1665 	return 0;
1666 }
1667 
1668 static int cxd2841er_unfreeze_regs(struct cxd2841er_priv *priv)
1669 {
1670 	/*
1671 	 * un-freeze registers
1672 	 */
1673 	cxd2841er_write_reg(priv, I2C_SLVT, 0x01, 0x00);
1674 	return 0;
1675 }
1676 
1677 static u32 cxd2841er_dvbs_read_snr(struct cxd2841er_priv *priv,
1678 		u8 delsys, u32 *snr)
1679 {
1680 	u8 data[3];
1681 	u32 res = 0, value;
1682 	int min_index, max_index, index;
1683 	static const struct cxd2841er_cnr_data *cn_data;
1684 
1685 	cxd2841er_freeze_regs(priv);
1686 	/* Set SLV-T Bank : 0xA1 */
1687 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa1);
1688 	/*
1689 	 *  slave     Bank      Addr      Bit     Signal name
1690 	 * <SLV-T>    A1h       10h       [0]     ICPM_QUICKRDY
1691 	 * <SLV-T>    A1h       11h       [4:0]   ICPM_QUICKCNDT[12:8]
1692 	 * <SLV-T>    A1h       12h       [7:0]   ICPM_QUICKCNDT[7:0]
1693 	 */
1694 	cxd2841er_read_regs(priv, I2C_SLVT, 0x10, data, 3);
1695 	cxd2841er_unfreeze_regs(priv);
1696 
1697 	if (data[0] & 0x01) {
1698 		value = ((u32)(data[1] & 0x1F) << 8) | (u32)(data[2] & 0xFF);
1699 		min_index = 0;
1700 		if (delsys == SYS_DVBS) {
1701 			cn_data = s_cn_data;
1702 			max_index = ARRAY_SIZE(s_cn_data) - 1;
1703 		} else {
1704 			cn_data = s2_cn_data;
1705 			max_index = ARRAY_SIZE(s2_cn_data) - 1;
1706 		}
1707 		if (value >= cn_data[min_index].value) {
1708 			res = cn_data[min_index].cnr_x1000;
1709 			goto done;
1710 		}
1711 		if (value <= cn_data[max_index].value) {
1712 			res = cn_data[max_index].cnr_x1000;
1713 			goto done;
1714 		}
1715 		while ((max_index - min_index) > 1) {
1716 			index = (max_index + min_index) / 2;
1717 			if (value == cn_data[index].value) {
1718 				res = cn_data[index].cnr_x1000;
1719 				goto done;
1720 			} else if (value > cn_data[index].value)
1721 				max_index = index;
1722 			else
1723 				min_index = index;
1724 			if ((max_index - min_index) <= 1) {
1725 				if (value == cn_data[max_index].value) {
1726 					res = cn_data[max_index].cnr_x1000;
1727 					goto done;
1728 				} else {
1729 					res = cn_data[min_index].cnr_x1000;
1730 					goto done;
1731 				}
1732 			}
1733 		}
1734 	} else {
1735 		dev_dbg(&priv->i2c->dev,
1736 			"%s(): no data available\n", __func__);
1737 		return -EINVAL;
1738 	}
1739 done:
1740 	*snr = res;
1741 	return 0;
1742 }
1743 
1744 static uint32_t sony_log(uint32_t x)
1745 {
1746 	return (((10000>>8)*(intlog2(x)>>16) + LOG2_E_100X/2)/LOG2_E_100X);
1747 }
1748 
1749 static int cxd2841er_read_snr_c(struct cxd2841er_priv *priv, u32 *snr)
1750 {
1751 	u32 reg;
1752 	u8 data[2];
1753 	enum sony_dvbc_constellation_t qam = SONY_DVBC_CONSTELLATION_16QAM;
1754 
1755 	*snr = 0;
1756 	if (priv->state != STATE_ACTIVE_TC) {
1757 		dev_dbg(&priv->i2c->dev,
1758 				"%s(): invalid state %d\n",
1759 				__func__, priv->state);
1760 		return -EINVAL;
1761 	}
1762 
1763 	cxd2841er_freeze_regs(priv);
1764 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
1765 	cxd2841er_read_regs(priv, I2C_SLVT, 0x19, data, 1);
1766 	qam = (enum sony_dvbc_constellation_t) (data[0] & 0x07);
1767 	cxd2841er_read_regs(priv, I2C_SLVT, 0x4C, data, 2);
1768 	cxd2841er_unfreeze_regs(priv);
1769 
1770 	reg = ((u32)(data[0]&0x1f) << 8) | (u32)data[1];
1771 	if (reg == 0) {
1772 		dev_dbg(&priv->i2c->dev,
1773 				"%s(): reg value out of range\n", __func__);
1774 		return 0;
1775 	}
1776 
1777 	switch (qam) {
1778 	case SONY_DVBC_CONSTELLATION_16QAM:
1779 	case SONY_DVBC_CONSTELLATION_64QAM:
1780 	case SONY_DVBC_CONSTELLATION_256QAM:
1781 		/* SNR(dB) = -9.50 * ln(IREG_SNR_ESTIMATE / (24320)) */
1782 		if (reg < 126)
1783 			reg = 126;
1784 		*snr = -95 * (int32_t)sony_log(reg) + 95941;
1785 		break;
1786 	case SONY_DVBC_CONSTELLATION_32QAM:
1787 	case SONY_DVBC_CONSTELLATION_128QAM:
1788 		/* SNR(dB) = -8.75 * ln(IREG_SNR_ESTIMATE / (20800)) */
1789 		if (reg < 69)
1790 			reg = 69;
1791 		*snr = -88 * (int32_t)sony_log(reg) + 86999;
1792 		break;
1793 	default:
1794 		return -EINVAL;
1795 	}
1796 
1797 	return 0;
1798 }
1799 
1800 static int cxd2841er_read_snr_t(struct cxd2841er_priv *priv, u32 *snr)
1801 {
1802 	u32 reg;
1803 	u8 data[2];
1804 
1805 	*snr = 0;
1806 	if (priv->state != STATE_ACTIVE_TC) {
1807 		dev_dbg(&priv->i2c->dev,
1808 			"%s(): invalid state %d\n", __func__, priv->state);
1809 		return -EINVAL;
1810 	}
1811 
1812 	cxd2841er_freeze_regs(priv);
1813 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
1814 	cxd2841er_read_regs(priv, I2C_SLVT, 0x28, data, sizeof(data));
1815 	cxd2841er_unfreeze_regs(priv);
1816 
1817 	reg = ((u32)data[0] << 8) | (u32)data[1];
1818 	if (reg == 0) {
1819 		dev_dbg(&priv->i2c->dev,
1820 			"%s(): reg value out of range\n", __func__);
1821 		return 0;
1822 	}
1823 	if (reg > 4996)
1824 		reg = 4996;
1825 	*snr = 100 * ((INTLOG10X100(reg) - INTLOG10X100(5350 - reg)) + 285);
1826 	return 0;
1827 }
1828 
1829 static int cxd2841er_read_snr_t2(struct cxd2841er_priv *priv, u32 *snr)
1830 {
1831 	u32 reg;
1832 	u8 data[2];
1833 
1834 	*snr = 0;
1835 	if (priv->state != STATE_ACTIVE_TC) {
1836 		dev_dbg(&priv->i2c->dev,
1837 			"%s(): invalid state %d\n", __func__, priv->state);
1838 		return -EINVAL;
1839 	}
1840 
1841 	cxd2841er_freeze_regs(priv);
1842 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x20);
1843 	cxd2841er_read_regs(priv, I2C_SLVT, 0x28, data, sizeof(data));
1844 	cxd2841er_unfreeze_regs(priv);
1845 
1846 	reg = ((u32)data[0] << 8) | (u32)data[1];
1847 	if (reg == 0) {
1848 		dev_dbg(&priv->i2c->dev,
1849 			"%s(): reg value out of range\n", __func__);
1850 		return 0;
1851 	}
1852 	if (reg > 10876)
1853 		reg = 10876;
1854 	*snr = 100 * ((INTLOG10X100(reg) - INTLOG10X100(12600 - reg)) + 320);
1855 	return 0;
1856 }
1857 
1858 static int cxd2841er_read_snr_i(struct cxd2841er_priv *priv, u32 *snr)
1859 {
1860 	u32 reg;
1861 	u8 data[2];
1862 
1863 	*snr = 0;
1864 	if (priv->state != STATE_ACTIVE_TC) {
1865 		dev_dbg(&priv->i2c->dev,
1866 				"%s(): invalid state %d\n", __func__,
1867 				priv->state);
1868 		return -EINVAL;
1869 	}
1870 
1871 	cxd2841er_freeze_regs(priv);
1872 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60);
1873 	cxd2841er_read_regs(priv, I2C_SLVT, 0x28, data, sizeof(data));
1874 	cxd2841er_unfreeze_regs(priv);
1875 
1876 	reg = ((u32)data[0] << 8) | (u32)data[1];
1877 	if (reg == 0) {
1878 		dev_dbg(&priv->i2c->dev,
1879 				"%s(): reg value out of range\n", __func__);
1880 		return 0;
1881 	}
1882 	*snr = 10000 * (intlog10(reg) >> 24) - 9031;
1883 	return 0;
1884 }
1885 
1886 static u16 cxd2841er_read_agc_gain_c(struct cxd2841er_priv *priv,
1887 					u8 delsys)
1888 {
1889 	u8 data[2];
1890 
1891 	cxd2841er_write_reg(
1892 		priv, I2C_SLVT, 0x00, 0x40);
1893 	cxd2841er_read_regs(priv, I2C_SLVT, 0x49, data, 2);
1894 	dev_dbg(&priv->i2c->dev,
1895 			"%s(): AGC value=%u\n",
1896 			__func__, (((u16)data[0] & 0x0F) << 8) |
1897 			(u16)(data[1] & 0xFF));
1898 	return ((((u16)data[0] & 0x0F) << 8) | (u16)(data[1] & 0xFF)) << 4;
1899 }
1900 
1901 static u16 cxd2841er_read_agc_gain_t_t2(struct cxd2841er_priv *priv,
1902 					u8 delsys)
1903 {
1904 	u8 data[2];
1905 
1906 	cxd2841er_write_reg(
1907 		priv, I2C_SLVT, 0x00, (delsys == SYS_DVBT ? 0x10 : 0x20));
1908 	cxd2841er_read_regs(priv, I2C_SLVT, 0x26, data, 2);
1909 	dev_dbg(&priv->i2c->dev,
1910 			"%s(): AGC value=%u\n",
1911 			__func__, (((u16)data[0] & 0x0F) << 8) |
1912 			(u16)(data[1] & 0xFF));
1913 	return ((((u16)data[0] & 0x0F) << 8) | (u16)(data[1] & 0xFF)) << 4;
1914 }
1915 
1916 static u16 cxd2841er_read_agc_gain_i(struct cxd2841er_priv *priv,
1917 		u8 delsys)
1918 {
1919 	u8 data[2];
1920 
1921 	cxd2841er_write_reg(
1922 			priv, I2C_SLVT, 0x00, 0x60);
1923 	cxd2841er_read_regs(priv, I2C_SLVT, 0x26, data, 2);
1924 
1925 	dev_dbg(&priv->i2c->dev,
1926 			"%s(): AGC value=%u\n",
1927 			__func__, (((u16)data[0] & 0x0F) << 8) |
1928 			(u16)(data[1] & 0xFF));
1929 	return ((((u16)data[0] & 0x0F) << 8) | (u16)(data[1] & 0xFF)) << 4;
1930 }
1931 
1932 static u16 cxd2841er_read_agc_gain_s(struct cxd2841er_priv *priv)
1933 {
1934 	u8 data[2];
1935 
1936 	/* Set SLV-T Bank : 0xA0 */
1937 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa0);
1938 	/*
1939 	 *  slave     Bank      Addr      Bit       Signal name
1940 	 * <SLV-T>    A0h       1Fh       [4:0]     IRFAGC_GAIN[12:8]
1941 	 * <SLV-T>    A0h       20h       [7:0]     IRFAGC_GAIN[7:0]
1942 	 */
1943 	cxd2841er_read_regs(priv, I2C_SLVT, 0x1f, data, 2);
1944 	return ((((u16)data[0] & 0x1F) << 8) | (u16)(data[1] & 0xFF)) << 3;
1945 }
1946 
1947 static void cxd2841er_read_ber(struct dvb_frontend *fe)
1948 {
1949 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
1950 	struct cxd2841er_priv *priv = fe->demodulator_priv;
1951 	u32 ret, bit_error = 0, bit_count = 0;
1952 
1953 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1954 	switch (p->delivery_system) {
1955 	case SYS_DVBC_ANNEX_A:
1956 	case SYS_DVBC_ANNEX_B:
1957 	case SYS_DVBC_ANNEX_C:
1958 		ret = cxd2841er_read_ber_c(priv, &bit_error, &bit_count);
1959 		break;
1960 	case SYS_ISDBT:
1961 		ret = cxd2841er_read_ber_i(priv, &bit_error, &bit_count);
1962 		break;
1963 	case SYS_DVBS:
1964 		ret = cxd2841er_mon_read_ber_s(priv, &bit_error, &bit_count);
1965 		break;
1966 	case SYS_DVBS2:
1967 		ret = cxd2841er_mon_read_ber_s2(priv, &bit_error, &bit_count);
1968 		break;
1969 	case SYS_DVBT:
1970 		ret = cxd2841er_read_ber_t(priv, &bit_error, &bit_count);
1971 		break;
1972 	case SYS_DVBT2:
1973 		ret = cxd2841er_read_ber_t2(priv, &bit_error, &bit_count);
1974 		break;
1975 	default:
1976 		p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1977 		p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1978 		return;
1979 	}
1980 
1981 	if (!ret) {
1982 		p->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
1983 		p->post_bit_error.stat[0].uvalue += bit_error;
1984 		p->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
1985 		p->post_bit_count.stat[0].uvalue += bit_count;
1986 	} else {
1987 		p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1988 		p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1989 	}
1990 }
1991 
1992 static void cxd2841er_read_signal_strength(struct dvb_frontend *fe)
1993 {
1994 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
1995 	struct cxd2841er_priv *priv = fe->demodulator_priv;
1996 	s32 strength;
1997 
1998 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
1999 	switch (p->delivery_system) {
2000 	case SYS_DVBT:
2001 	case SYS_DVBT2:
2002 		strength = cxd2841er_read_agc_gain_t_t2(priv,
2003 							p->delivery_system);
2004 		p->strength.stat[0].scale = FE_SCALE_DECIBEL;
2005 		/* Formula was empirically determinated @ 410 MHz */
2006 		p->strength.stat[0].uvalue = strength * 366 / 100 - 89520;
2007 		break;	/* Code moved out of the function */
2008 	case SYS_DVBC_ANNEX_A:
2009 	case SYS_DVBC_ANNEX_B:
2010 	case SYS_DVBC_ANNEX_C:
2011 		strength = cxd2841er_read_agc_gain_c(priv,
2012 							p->delivery_system);
2013 		p->strength.stat[0].scale = FE_SCALE_DECIBEL;
2014 		/*
2015 		 * Formula was empirically determinated via linear regression,
2016 		 * using frequencies: 175 MHz, 410 MHz and 800 MHz, and a
2017 		 * stream modulated with QAM64
2018 		 */
2019 		p->strength.stat[0].uvalue = strength * 4045 / 1000 - 85224;
2020 		break;
2021 	case SYS_ISDBT:
2022 		strength = cxd2841er_read_agc_gain_i(priv, p->delivery_system);
2023 		p->strength.stat[0].scale = FE_SCALE_DECIBEL;
2024 		/*
2025 		 * Formula was empirically determinated via linear regression,
2026 		 * using frequencies: 175 MHz, 410 MHz and 800 MHz.
2027 		 */
2028 		p->strength.stat[0].uvalue = strength * 3775 / 1000 - 90185;
2029 		break;
2030 	case SYS_DVBS:
2031 	case SYS_DVBS2:
2032 		strength = 65535 - cxd2841er_read_agc_gain_s(priv);
2033 		p->strength.stat[0].scale = FE_SCALE_RELATIVE;
2034 		p->strength.stat[0].uvalue = strength;
2035 		break;
2036 	default:
2037 		p->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
2038 		break;
2039 	}
2040 }
2041 
2042 static void cxd2841er_read_snr(struct dvb_frontend *fe)
2043 {
2044 	u32 tmp = 0;
2045 	int ret = 0;
2046 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
2047 	struct cxd2841er_priv *priv = fe->demodulator_priv;
2048 
2049 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
2050 	switch (p->delivery_system) {
2051 	case SYS_DVBC_ANNEX_A:
2052 	case SYS_DVBC_ANNEX_B:
2053 	case SYS_DVBC_ANNEX_C:
2054 		ret = cxd2841er_read_snr_c(priv, &tmp);
2055 		break;
2056 	case SYS_DVBT:
2057 		ret = cxd2841er_read_snr_t(priv, &tmp);
2058 		break;
2059 	case SYS_DVBT2:
2060 		ret = cxd2841er_read_snr_t2(priv, &tmp);
2061 		break;
2062 	case SYS_ISDBT:
2063 		ret = cxd2841er_read_snr_i(priv, &tmp);
2064 		break;
2065 	case SYS_DVBS:
2066 	case SYS_DVBS2:
2067 		ret = cxd2841er_dvbs_read_snr(priv, p->delivery_system, &tmp);
2068 		break;
2069 	default:
2070 		dev_dbg(&priv->i2c->dev, "%s(): unknown delivery system %d\n",
2071 			__func__, p->delivery_system);
2072 		p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
2073 		return;
2074 	}
2075 
2076 	dev_dbg(&priv->i2c->dev, "%s(): snr=%d\n",
2077 			__func__, (int32_t)tmp);
2078 
2079 	if (!ret) {
2080 		p->cnr.stat[0].scale = FE_SCALE_DECIBEL;
2081 		p->cnr.stat[0].svalue = tmp;
2082 	} else {
2083 		p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
2084 	}
2085 }
2086 
2087 static void cxd2841er_read_ucblocks(struct dvb_frontend *fe)
2088 {
2089 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
2090 	struct cxd2841er_priv *priv = fe->demodulator_priv;
2091 	u32 ucblocks = 0;
2092 
2093 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
2094 	switch (p->delivery_system) {
2095 	case SYS_DVBC_ANNEX_A:
2096 	case SYS_DVBC_ANNEX_B:
2097 	case SYS_DVBC_ANNEX_C:
2098 		cxd2841er_read_packet_errors_c(priv, &ucblocks);
2099 		break;
2100 	case SYS_DVBT:
2101 		cxd2841er_read_packet_errors_t(priv, &ucblocks);
2102 		break;
2103 	case SYS_DVBT2:
2104 		cxd2841er_read_packet_errors_t2(priv, &ucblocks);
2105 		break;
2106 	case SYS_ISDBT:
2107 		cxd2841er_read_packet_errors_i(priv, &ucblocks);
2108 		break;
2109 	default:
2110 		p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
2111 		return;
2112 	}
2113 	dev_dbg(&priv->i2c->dev, "%s() ucblocks=%u\n", __func__, ucblocks);
2114 
2115 	p->block_error.stat[0].scale = FE_SCALE_COUNTER;
2116 	p->block_error.stat[0].uvalue = ucblocks;
2117 }
2118 
2119 static int cxd2841er_dvbt2_set_profile(
2120 	struct cxd2841er_priv *priv, enum cxd2841er_dvbt2_profile_t profile)
2121 {
2122 	u8 tune_mode;
2123 	u8 seq_not2d_time;
2124 
2125 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
2126 	switch (profile) {
2127 	case DVBT2_PROFILE_BASE:
2128 		tune_mode = 0x01;
2129 		/* Set early unlock time */
2130 		seq_not2d_time = (priv->xtal == SONY_XTAL_24000)?0x0E:0x0C;
2131 		break;
2132 	case DVBT2_PROFILE_LITE:
2133 		tune_mode = 0x05;
2134 		/* Set early unlock time */
2135 		seq_not2d_time = (priv->xtal == SONY_XTAL_24000)?0x2E:0x28;
2136 		break;
2137 	case DVBT2_PROFILE_ANY:
2138 		tune_mode = 0x00;
2139 		/* Set early unlock time */
2140 		seq_not2d_time = (priv->xtal == SONY_XTAL_24000)?0x2E:0x28;
2141 		break;
2142 	default:
2143 		return -EINVAL;
2144 	}
2145 	/* Set SLV-T Bank : 0x2E */
2146 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2e);
2147 	/* Set profile and tune mode */
2148 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x10, tune_mode, 0x07);
2149 	/* Set SLV-T Bank : 0x2B */
2150 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2b);
2151 	/* Set early unlock detection time */
2152 	cxd2841er_write_reg(priv, I2C_SLVT, 0x9d, seq_not2d_time);
2153 	return 0;
2154 }
2155 
2156 static int cxd2841er_dvbt2_set_plp_config(struct cxd2841er_priv *priv,
2157 					  u8 is_auto, u8 plp_id)
2158 {
2159 	if (is_auto) {
2160 		dev_dbg(&priv->i2c->dev,
2161 			"%s() using auto PLP selection\n", __func__);
2162 	} else {
2163 		dev_dbg(&priv->i2c->dev,
2164 			"%s() using manual PLP selection, ID %d\n",
2165 			__func__, plp_id);
2166 	}
2167 	/* Set SLV-T Bank : 0x23 */
2168 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x23);
2169 	if (!is_auto) {
2170 		/* Manual PLP selection mode. Set the data PLP Id. */
2171 		cxd2841er_write_reg(priv, I2C_SLVT, 0xaf, plp_id);
2172 	}
2173 	/* Auto PLP select (Scanning mode = 0x00). Data PLP select = 0x01. */
2174 	cxd2841er_write_reg(priv, I2C_SLVT, 0xad, (is_auto ? 0x00 : 0x01));
2175 	return 0;
2176 }
2177 
2178 static int cxd2841er_sleep_tc_to_active_t2_band(struct cxd2841er_priv *priv,
2179 						u32 bandwidth)
2180 {
2181 	u32 iffreq, ifhz;
2182 	u8 data[MAX_WRITE_REGSIZE];
2183 
2184 	static const uint8_t nominalRate8bw[3][5] = {
2185 		/* TRCG Nominal Rate [37:0] */
2186 		{0x11, 0xF0, 0x00, 0x00, 0x00}, /* 20.5MHz XTal */
2187 		{0x15, 0x00, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2188 		{0x11, 0xF0, 0x00, 0x00, 0x00}  /* 41MHz XTal */
2189 	};
2190 
2191 	static const uint8_t nominalRate7bw[3][5] = {
2192 		/* TRCG Nominal Rate [37:0] */
2193 		{0x14, 0x80, 0x00, 0x00, 0x00}, /* 20.5MHz XTal */
2194 		{0x18, 0x00, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2195 		{0x14, 0x80, 0x00, 0x00, 0x00}  /* 41MHz XTal */
2196 	};
2197 
2198 	static const uint8_t nominalRate6bw[3][5] = {
2199 		/* TRCG Nominal Rate [37:0] */
2200 		{0x17, 0xEA, 0xAA, 0xAA, 0xAA}, /* 20.5MHz XTal */
2201 		{0x1C, 0x00, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2202 		{0x17, 0xEA, 0xAA, 0xAA, 0xAA}  /* 41MHz XTal */
2203 	};
2204 
2205 	static const uint8_t nominalRate5bw[3][5] = {
2206 		/* TRCG Nominal Rate [37:0] */
2207 		{0x1C, 0xB3, 0x33, 0x33, 0x33}, /* 20.5MHz XTal */
2208 		{0x21, 0x99, 0x99, 0x99, 0x99}, /* 24MHz XTal */
2209 		{0x1C, 0xB3, 0x33, 0x33, 0x33}  /* 41MHz XTal */
2210 	};
2211 
2212 	static const uint8_t nominalRate17bw[3][5] = {
2213 		/* TRCG Nominal Rate [37:0] */
2214 		{0x58, 0xE2, 0xAF, 0xE0, 0xBC}, /* 20.5MHz XTal */
2215 		{0x68, 0x0F, 0xA2, 0x32, 0xD0}, /* 24MHz XTal */
2216 		{0x58, 0xE2, 0xAF, 0xE0, 0xBC}  /* 41MHz XTal */
2217 	};
2218 
2219 	static const uint8_t itbCoef8bw[3][14] = {
2220 		{0x26, 0xAF, 0x06, 0xCD, 0x13, 0xBB, 0x28, 0xBA,
2221 			0x23, 0xA9, 0x1F, 0xA8, 0x2C, 0xC8}, /* 20.5MHz XTal */
2222 		{0x2F, 0xBA, 0x28, 0x9B, 0x28, 0x9D, 0x28, 0xA1,
2223 			0x29, 0xA5, 0x2A, 0xAC, 0x29, 0xB5}, /* 24MHz XTal   */
2224 		{0x26, 0xAF, 0x06, 0xCD, 0x13, 0xBB, 0x28, 0xBA,
2225 			0x23, 0xA9, 0x1F, 0xA8, 0x2C, 0xC8}  /* 41MHz XTal   */
2226 	};
2227 
2228 	static const uint8_t itbCoef7bw[3][14] = {
2229 		{0x2C, 0xBD, 0x02, 0xCF, 0x04, 0xF8, 0x23, 0xA6,
2230 			0x29, 0xB0, 0x26, 0xA9, 0x21, 0xA5}, /* 20.5MHz XTal */
2231 		{0x30, 0xB1, 0x29, 0x9A, 0x28, 0x9C, 0x28, 0xA0,
2232 			0x29, 0xA2, 0x2B, 0xA6, 0x2B, 0xAD}, /* 24MHz XTal   */
2233 		{0x2C, 0xBD, 0x02, 0xCF, 0x04, 0xF8, 0x23, 0xA6,
2234 			0x29, 0xB0, 0x26, 0xA9, 0x21, 0xA5}  /* 41MHz XTal   */
2235 	};
2236 
2237 	static const uint8_t itbCoef6bw[3][14] = {
2238 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8,
2239 			0x00, 0xCF, 0x00, 0xE6, 0x23, 0xA4}, /* 20.5MHz XTal */
2240 		{0x31, 0xA8, 0x29, 0x9B, 0x27, 0x9C, 0x28, 0x9E,
2241 			0x29, 0xA4, 0x29, 0xA2, 0x29, 0xA8}, /* 24MHz XTal   */
2242 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8,
2243 			0x00, 0xCF, 0x00, 0xE6, 0x23, 0xA4}  /* 41MHz XTal   */
2244 	};
2245 
2246 	static const uint8_t itbCoef5bw[3][14] = {
2247 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8,
2248 			0x00, 0xCF, 0x00, 0xE6, 0x23, 0xA4}, /* 20.5MHz XTal */
2249 		{0x31, 0xA8, 0x29, 0x9B, 0x27, 0x9C, 0x28, 0x9E,
2250 			0x29, 0xA4, 0x29, 0xA2, 0x29, 0xA8}, /* 24MHz XTal   */
2251 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8,
2252 			0x00, 0xCF, 0x00, 0xE6, 0x23, 0xA4}  /* 41MHz XTal   */
2253 	};
2254 
2255 	static const uint8_t itbCoef17bw[3][14] = {
2256 		{0x25, 0xA0, 0x36, 0x8D, 0x2E, 0x94, 0x28, 0x9B,
2257 			0x32, 0x90, 0x2C, 0x9D, 0x29, 0x99}, /* 20.5MHz XTal */
2258 		{0x33, 0x8E, 0x2B, 0x97, 0x2D, 0x95, 0x37, 0x8B,
2259 			0x30, 0x97, 0x2D, 0x9A, 0x21, 0xA4}, /* 24MHz XTal   */
2260 		{0x25, 0xA0, 0x36, 0x8D, 0x2E, 0x94, 0x28, 0x9B,
2261 			0x32, 0x90, 0x2C, 0x9D, 0x29, 0x99}  /* 41MHz XTal   */
2262 	};
2263 
2264 	/* Set SLV-T Bank : 0x20 */
2265 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x20);
2266 
2267 	switch (bandwidth) {
2268 	case 8000000:
2269 		/* <Timing Recovery setting> */
2270 		cxd2841er_write_regs(priv, I2C_SLVT,
2271 				0x9F, nominalRate8bw[priv->xtal], 5);
2272 
2273 		/* Set SLV-T Bank : 0x27 */
2274 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x27);
2275 		cxd2841er_set_reg_bits(priv, I2C_SLVT,
2276 				0x7a, 0x00, 0x0f);
2277 
2278 		/* Set SLV-T Bank : 0x10 */
2279 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2280 
2281 		/* Group delay equaliser settings for
2282 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2283 		 */
2284 		if (priv->flags & CXD2841ER_ASCOT)
2285 			cxd2841er_write_regs(priv, I2C_SLVT,
2286 				0xA6, itbCoef8bw[priv->xtal], 14);
2287 		/* <IF freq setting> */
2288 		ifhz = cxd2841er_get_if_hz(priv, 4800000);
2289 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2290 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2291 		data[1] = (u8)((iffreq >> 8) & 0xff);
2292 		data[2] = (u8)(iffreq & 0xff);
2293 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2294 		/* System bandwidth setting */
2295 		cxd2841er_set_reg_bits(
2296 				priv, I2C_SLVT, 0xD7, 0x00, 0x07);
2297 		break;
2298 	case 7000000:
2299 		/* <Timing Recovery setting> */
2300 		cxd2841er_write_regs(priv, I2C_SLVT,
2301 				0x9F, nominalRate7bw[priv->xtal], 5);
2302 
2303 		/* Set SLV-T Bank : 0x27 */
2304 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x27);
2305 		cxd2841er_set_reg_bits(priv, I2C_SLVT,
2306 				0x7a, 0x00, 0x0f);
2307 
2308 		/* Set SLV-T Bank : 0x10 */
2309 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2310 
2311 		/* Group delay equaliser settings for
2312 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2313 		 */
2314 		if (priv->flags & CXD2841ER_ASCOT)
2315 			cxd2841er_write_regs(priv, I2C_SLVT,
2316 				0xA6, itbCoef7bw[priv->xtal], 14);
2317 		/* <IF freq setting> */
2318 		ifhz = cxd2841er_get_if_hz(priv, 4200000);
2319 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2320 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2321 		data[1] = (u8)((iffreq >> 8) & 0xff);
2322 		data[2] = (u8)(iffreq & 0xff);
2323 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2324 		/* System bandwidth setting */
2325 		cxd2841er_set_reg_bits(
2326 				priv, I2C_SLVT, 0xD7, 0x02, 0x07);
2327 		break;
2328 	case 6000000:
2329 		/* <Timing Recovery setting> */
2330 		cxd2841er_write_regs(priv, I2C_SLVT,
2331 				0x9F, nominalRate6bw[priv->xtal], 5);
2332 
2333 		/* Set SLV-T Bank : 0x27 */
2334 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x27);
2335 		cxd2841er_set_reg_bits(priv, I2C_SLVT,
2336 				0x7a, 0x00, 0x0f);
2337 
2338 		/* Set SLV-T Bank : 0x10 */
2339 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2340 
2341 		/* Group delay equaliser settings for
2342 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2343 		 */
2344 		if (priv->flags & CXD2841ER_ASCOT)
2345 			cxd2841er_write_regs(priv, I2C_SLVT,
2346 				0xA6, itbCoef6bw[priv->xtal], 14);
2347 		/* <IF freq setting> */
2348 		ifhz = cxd2841er_get_if_hz(priv, 3600000);
2349 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2350 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2351 		data[1] = (u8)((iffreq >> 8) & 0xff);
2352 		data[2] = (u8)(iffreq & 0xff);
2353 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2354 		/* System bandwidth setting */
2355 		cxd2841er_set_reg_bits(
2356 				priv, I2C_SLVT, 0xD7, 0x04, 0x07);
2357 		break;
2358 	case 5000000:
2359 		/* <Timing Recovery setting> */
2360 		cxd2841er_write_regs(priv, I2C_SLVT,
2361 				0x9F, nominalRate5bw[priv->xtal], 5);
2362 
2363 		/* Set SLV-T Bank : 0x27 */
2364 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x27);
2365 		cxd2841er_set_reg_bits(priv, I2C_SLVT,
2366 				0x7a, 0x00, 0x0f);
2367 
2368 		/* Set SLV-T Bank : 0x10 */
2369 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2370 
2371 		/* Group delay equaliser settings for
2372 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2373 		 */
2374 		if (priv->flags & CXD2841ER_ASCOT)
2375 			cxd2841er_write_regs(priv, I2C_SLVT,
2376 				0xA6, itbCoef5bw[priv->xtal], 14);
2377 		/* <IF freq setting> */
2378 		ifhz = cxd2841er_get_if_hz(priv, 3600000);
2379 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2380 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2381 		data[1] = (u8)((iffreq >> 8) & 0xff);
2382 		data[2] = (u8)(iffreq & 0xff);
2383 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2384 		/* System bandwidth setting */
2385 		cxd2841er_set_reg_bits(
2386 				priv, I2C_SLVT, 0xD7, 0x06, 0x07);
2387 		break;
2388 	case 1712000:
2389 		/* <Timing Recovery setting> */
2390 		cxd2841er_write_regs(priv, I2C_SLVT,
2391 				0x9F, nominalRate17bw[priv->xtal], 5);
2392 
2393 		/* Set SLV-T Bank : 0x27 */
2394 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x27);
2395 		cxd2841er_set_reg_bits(priv, I2C_SLVT,
2396 				0x7a, 0x03, 0x0f);
2397 
2398 		/* Set SLV-T Bank : 0x10 */
2399 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2400 
2401 		/* Group delay equaliser settings for
2402 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2403 		 */
2404 		if (priv->flags & CXD2841ER_ASCOT)
2405 			cxd2841er_write_regs(priv, I2C_SLVT,
2406 				0xA6, itbCoef17bw[priv->xtal], 14);
2407 		/* <IF freq setting> */
2408 		ifhz = cxd2841er_get_if_hz(priv, 3500000);
2409 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2410 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2411 		data[1] = (u8)((iffreq >> 8) & 0xff);
2412 		data[2] = (u8)(iffreq & 0xff);
2413 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2414 		/* System bandwidth setting */
2415 		cxd2841er_set_reg_bits(
2416 				priv, I2C_SLVT, 0xD7, 0x03, 0x07);
2417 		break;
2418 	default:
2419 		return -EINVAL;
2420 	}
2421 	return 0;
2422 }
2423 
2424 static int cxd2841er_sleep_tc_to_active_t_band(
2425 		struct cxd2841er_priv *priv, u32 bandwidth)
2426 {
2427 	u8 data[MAX_WRITE_REGSIZE];
2428 	u32 iffreq, ifhz;
2429 	static const u8 nominalRate8bw[3][5] = {
2430 		/* TRCG Nominal Rate [37:0] */
2431 		{0x11, 0xF0, 0x00, 0x00, 0x00}, /* 20.5MHz XTal */
2432 		{0x15, 0x00, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2433 		{0x11, 0xF0, 0x00, 0x00, 0x00}  /* 41MHz XTal */
2434 	};
2435 	static const u8 nominalRate7bw[3][5] = {
2436 		/* TRCG Nominal Rate [37:0] */
2437 		{0x14, 0x80, 0x00, 0x00, 0x00}, /* 20.5MHz XTal */
2438 		{0x18, 0x00, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2439 		{0x14, 0x80, 0x00, 0x00, 0x00}  /* 41MHz XTal */
2440 	};
2441 	static const u8 nominalRate6bw[3][5] = {
2442 		/* TRCG Nominal Rate [37:0] */
2443 		{0x17, 0xEA, 0xAA, 0xAA, 0xAA}, /* 20.5MHz XTal */
2444 		{0x1C, 0x00, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2445 		{0x17, 0xEA, 0xAA, 0xAA, 0xAA}  /* 41MHz XTal */
2446 	};
2447 	static const u8 nominalRate5bw[3][5] = {
2448 		/* TRCG Nominal Rate [37:0] */
2449 		{0x1C, 0xB3, 0x33, 0x33, 0x33}, /* 20.5MHz XTal */
2450 		{0x21, 0x99, 0x99, 0x99, 0x99}, /* 24MHz XTal */
2451 		{0x1C, 0xB3, 0x33, 0x33, 0x33}  /* 41MHz XTal */
2452 	};
2453 
2454 	static const u8 itbCoef8bw[3][14] = {
2455 		{0x26, 0xAF, 0x06, 0xCD, 0x13, 0xBB, 0x28, 0xBA, 0x23, 0xA9,
2456 			0x1F, 0xA8, 0x2C, 0xC8}, /* 20.5MHz XTal */
2457 		{0x2F, 0xBA, 0x28, 0x9B, 0x28, 0x9D, 0x28, 0xA1, 0x29, 0xA5,
2458 			0x2A, 0xAC, 0x29, 0xB5}, /* 24MHz XTal   */
2459 		{0x26, 0xAF, 0x06, 0xCD, 0x13, 0xBB, 0x28, 0xBA, 0x23, 0xA9,
2460 			0x1F, 0xA8, 0x2C, 0xC8}  /* 41MHz XTal   */
2461 	};
2462 	static const u8 itbCoef7bw[3][14] = {
2463 		{0x2C, 0xBD, 0x02, 0xCF, 0x04, 0xF8, 0x23, 0xA6, 0x29, 0xB0,
2464 			0x26, 0xA9, 0x21, 0xA5}, /* 20.5MHz XTal */
2465 		{0x30, 0xB1, 0x29, 0x9A, 0x28, 0x9C, 0x28, 0xA0, 0x29, 0xA2,
2466 			0x2B, 0xA6, 0x2B, 0xAD}, /* 24MHz XTal   */
2467 		{0x2C, 0xBD, 0x02, 0xCF, 0x04, 0xF8, 0x23, 0xA6, 0x29, 0xB0,
2468 			0x26, 0xA9, 0x21, 0xA5}  /* 41MHz XTal   */
2469 	};
2470 	static const u8 itbCoef6bw[3][14] = {
2471 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8, 0x00, 0xCF,
2472 			0x00, 0xE6, 0x23, 0xA4}, /* 20.5MHz XTal */
2473 		{0x31, 0xA8, 0x29, 0x9B, 0x27, 0x9C, 0x28, 0x9E, 0x29, 0xA4,
2474 			0x29, 0xA2, 0x29, 0xA8}, /* 24MHz XTal   */
2475 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8, 0x00, 0xCF,
2476 			0x00, 0xE6, 0x23, 0xA4}  /* 41MHz XTal   */
2477 	};
2478 	static const u8 itbCoef5bw[3][14] = {
2479 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8, 0x00, 0xCF,
2480 			0x00, 0xE6, 0x23, 0xA4}, /* 20.5MHz XTal */
2481 		{0x31, 0xA8, 0x29, 0x9B, 0x27, 0x9C, 0x28, 0x9E, 0x29, 0xA4,
2482 			0x29, 0xA2, 0x29, 0xA8}, /* 24MHz XTal   */
2483 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8, 0x00, 0xCF,
2484 			0x00, 0xE6, 0x23, 0xA4}  /* 41MHz XTal   */
2485 	};
2486 
2487 	/* Set SLV-T Bank : 0x13 */
2488 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x13);
2489 	/* Echo performance optimization setting */
2490 	data[0] = 0x01;
2491 	data[1] = 0x14;
2492 	cxd2841er_write_regs(priv, I2C_SLVT, 0x9C, data, 2);
2493 
2494 	/* Set SLV-T Bank : 0x10 */
2495 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2496 
2497 	switch (bandwidth) {
2498 	case 8000000:
2499 		/* <Timing Recovery setting> */
2500 		cxd2841er_write_regs(priv, I2C_SLVT,
2501 				0x9F, nominalRate8bw[priv->xtal], 5);
2502 		/* Group delay equaliser settings for
2503 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2504 		*/
2505 		if (priv->flags & CXD2841ER_ASCOT)
2506 			cxd2841er_write_regs(priv, I2C_SLVT,
2507 				0xA6, itbCoef8bw[priv->xtal], 14);
2508 		/* <IF freq setting> */
2509 		ifhz = cxd2841er_get_if_hz(priv, 4800000);
2510 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2511 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2512 		data[1] = (u8)((iffreq >> 8) & 0xff);
2513 		data[2] = (u8)(iffreq & 0xff);
2514 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2515 		/* System bandwidth setting */
2516 		cxd2841er_set_reg_bits(
2517 			priv, I2C_SLVT, 0xD7, 0x00, 0x07);
2518 
2519 		/* Demod core latency setting */
2520 		if (priv->xtal == SONY_XTAL_24000) {
2521 			data[0] = 0x15;
2522 			data[1] = 0x28;
2523 		} else {
2524 			data[0] = 0x01;
2525 			data[1] = 0xE0;
2526 		}
2527 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
2528 
2529 		/* Notch filter setting */
2530 		data[0] = 0x01;
2531 		data[1] = 0x02;
2532 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x17);
2533 		cxd2841er_write_regs(priv, I2C_SLVT, 0x38, data, 2);
2534 		break;
2535 	case 7000000:
2536 		/* <Timing Recovery setting> */
2537 		cxd2841er_write_regs(priv, I2C_SLVT,
2538 				0x9F, nominalRate7bw[priv->xtal], 5);
2539 		/* Group delay equaliser settings for
2540 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2541 		*/
2542 		if (priv->flags & CXD2841ER_ASCOT)
2543 			cxd2841er_write_regs(priv, I2C_SLVT,
2544 				0xA6, itbCoef7bw[priv->xtal], 14);
2545 		/* <IF freq setting> */
2546 		ifhz = cxd2841er_get_if_hz(priv, 4200000);
2547 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2548 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2549 		data[1] = (u8)((iffreq >> 8) & 0xff);
2550 		data[2] = (u8)(iffreq & 0xff);
2551 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2552 		/* System bandwidth setting */
2553 		cxd2841er_set_reg_bits(
2554 			priv, I2C_SLVT, 0xD7, 0x02, 0x07);
2555 
2556 		/* Demod core latency setting */
2557 		if (priv->xtal == SONY_XTAL_24000) {
2558 			data[0] = 0x1F;
2559 			data[1] = 0xF8;
2560 		} else {
2561 			data[0] = 0x12;
2562 			data[1] = 0xF8;
2563 		}
2564 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
2565 
2566 		/* Notch filter setting */
2567 		data[0] = 0x00;
2568 		data[1] = 0x03;
2569 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x17);
2570 		cxd2841er_write_regs(priv, I2C_SLVT, 0x38, data, 2);
2571 		break;
2572 	case 6000000:
2573 		/* <Timing Recovery setting> */
2574 		cxd2841er_write_regs(priv, I2C_SLVT,
2575 				0x9F, nominalRate6bw[priv->xtal], 5);
2576 		/* Group delay equaliser settings for
2577 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2578 		*/
2579 		if (priv->flags & CXD2841ER_ASCOT)
2580 			cxd2841er_write_regs(priv, I2C_SLVT,
2581 				0xA6, itbCoef6bw[priv->xtal], 14);
2582 		/* <IF freq setting> */
2583 		ifhz = cxd2841er_get_if_hz(priv, 3600000);
2584 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2585 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2586 		data[1] = (u8)((iffreq >> 8) & 0xff);
2587 		data[2] = (u8)(iffreq & 0xff);
2588 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2589 		/* System bandwidth setting */
2590 		cxd2841er_set_reg_bits(
2591 			priv, I2C_SLVT, 0xD7, 0x04, 0x07);
2592 
2593 		/* Demod core latency setting */
2594 		if (priv->xtal == SONY_XTAL_24000) {
2595 			data[0] = 0x25;
2596 			data[1] = 0x4C;
2597 		} else {
2598 			data[0] = 0x1F;
2599 			data[1] = 0xDC;
2600 		}
2601 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
2602 
2603 		/* Notch filter setting */
2604 		data[0] = 0x00;
2605 		data[1] = 0x03;
2606 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x17);
2607 		cxd2841er_write_regs(priv, I2C_SLVT, 0x38, data, 2);
2608 		break;
2609 	case 5000000:
2610 		/* <Timing Recovery setting> */
2611 		cxd2841er_write_regs(priv, I2C_SLVT,
2612 				0x9F, nominalRate5bw[priv->xtal], 5);
2613 		/* Group delay equaliser settings for
2614 		 * ASCOT2D, ASCOT2E and ASCOT3 tuners
2615 		*/
2616 		if (priv->flags & CXD2841ER_ASCOT)
2617 			cxd2841er_write_regs(priv, I2C_SLVT,
2618 				0xA6, itbCoef5bw[priv->xtal], 14);
2619 		/* <IF freq setting> */
2620 		ifhz = cxd2841er_get_if_hz(priv, 3600000);
2621 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2622 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2623 		data[1] = (u8)((iffreq >> 8) & 0xff);
2624 		data[2] = (u8)(iffreq & 0xff);
2625 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2626 		/* System bandwidth setting */
2627 		cxd2841er_set_reg_bits(
2628 			priv, I2C_SLVT, 0xD7, 0x06, 0x07);
2629 
2630 		/* Demod core latency setting */
2631 		if (priv->xtal == SONY_XTAL_24000) {
2632 			data[0] = 0x2C;
2633 			data[1] = 0xC2;
2634 		} else {
2635 			data[0] = 0x26;
2636 			data[1] = 0x3C;
2637 		}
2638 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
2639 
2640 		/* Notch filter setting */
2641 		data[0] = 0x00;
2642 		data[1] = 0x03;
2643 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x17);
2644 		cxd2841er_write_regs(priv, I2C_SLVT, 0x38, data, 2);
2645 		break;
2646 	}
2647 
2648 	return 0;
2649 }
2650 
2651 static int cxd2841er_sleep_tc_to_active_i_band(
2652 		struct cxd2841er_priv *priv, u32 bandwidth)
2653 {
2654 	u32 iffreq, ifhz;
2655 	u8 data[3];
2656 
2657 	/* TRCG Nominal Rate */
2658 	static const u8 nominalRate8bw[3][5] = {
2659 		{0x00, 0x00, 0x00, 0x00, 0x00}, /* 20.5MHz XTal */
2660 		{0x11, 0xB8, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2661 		{0x00, 0x00, 0x00, 0x00, 0x00}  /* 41MHz XTal */
2662 	};
2663 
2664 	static const u8 nominalRate7bw[3][5] = {
2665 		{0x00, 0x00, 0x00, 0x00, 0x00}, /* 20.5MHz XTal */
2666 		{0x14, 0x40, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2667 		{0x00, 0x00, 0x00, 0x00, 0x00}  /* 41MHz XTal */
2668 	};
2669 
2670 	static const u8 nominalRate6bw[3][5] = {
2671 		{0x14, 0x2E, 0x00, 0x00, 0x00}, /* 20.5MHz XTal */
2672 		{0x17, 0xA0, 0x00, 0x00, 0x00}, /* 24MHz XTal */
2673 		{0x14, 0x2E, 0x00, 0x00, 0x00}  /* 41MHz XTal */
2674 	};
2675 
2676 	static const u8 itbCoef8bw[3][14] = {
2677 		{0x00}, /* 20.5MHz XTal */
2678 		{0x2F, 0xBA, 0x28, 0x9B, 0x28, 0x9D, 0x28, 0xA1, 0x29,
2679 			0xA5, 0x2A, 0xAC, 0x29, 0xB5}, /* 24MHz Xtal */
2680 		{0x0}, /* 41MHz XTal   */
2681 	};
2682 
2683 	static const u8 itbCoef7bw[3][14] = {
2684 		{0x00}, /* 20.5MHz XTal */
2685 		{0x30, 0xB1, 0x29, 0x9A, 0x28, 0x9C, 0x28, 0xA0, 0x29,
2686 			0xA2, 0x2B, 0xA6, 0x2B, 0xAD}, /* 24MHz Xtal */
2687 		{0x00}, /* 41MHz XTal   */
2688 	};
2689 
2690 	static const u8 itbCoef6bw[3][14] = {
2691 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8, 0x00,
2692 			0xCF, 0x00, 0xE6, 0x23, 0xA4}, /* 20.5MHz XTal */
2693 		{0x31, 0xA8, 0x29, 0x9B, 0x27, 0x9C, 0x28, 0x9E, 0x29,
2694 			0xA4, 0x29, 0xA2, 0x29, 0xA8}, /* 24MHz Xtal   */
2695 		{0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8, 0x00,
2696 			0xCF, 0x00, 0xE6, 0x23, 0xA4}, /* 41MHz XTal   */
2697 	};
2698 
2699 	dev_dbg(&priv->i2c->dev, "%s() bandwidth=%u\n", __func__, bandwidth);
2700 	/* Set SLV-T Bank : 0x10 */
2701 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2702 
2703 	/*  20.5/41MHz Xtal support is not available
2704 	 *  on ISDB-T 7MHzBW and 8MHzBW
2705 	*/
2706 	if (priv->xtal != SONY_XTAL_24000 && bandwidth > 6000000) {
2707 		dev_err(&priv->i2c->dev,
2708 			"%s(): bandwidth %d supported only for 24MHz xtal\n",
2709 			__func__, bandwidth);
2710 		return -EINVAL;
2711 	}
2712 
2713 	switch (bandwidth) {
2714 	case 8000000:
2715 		/* TRCG Nominal Rate */
2716 		cxd2841er_write_regs(priv, I2C_SLVT,
2717 				0x9F, nominalRate8bw[priv->xtal], 5);
2718 		/*  Group delay equaliser settings for ASCOT tuners optimized */
2719 		if (priv->flags & CXD2841ER_ASCOT)
2720 			cxd2841er_write_regs(priv, I2C_SLVT,
2721 				0xA6, itbCoef8bw[priv->xtal], 14);
2722 
2723 		/* IF freq setting */
2724 		ifhz = cxd2841er_get_if_hz(priv, 4750000);
2725 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2726 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2727 		data[1] = (u8)((iffreq >> 8) & 0xff);
2728 		data[2] = (u8)(iffreq & 0xff);
2729 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2730 
2731 		/* System bandwidth setting */
2732 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xd7, 0x0, 0x7);
2733 
2734 		/* Demod core latency setting */
2735 		data[0] = 0x13;
2736 		data[1] = 0xFC;
2737 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
2738 
2739 		/* Acquisition optimization setting */
2740 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x12);
2741 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x71, 0x03, 0x07);
2742 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x15);
2743 		cxd2841er_write_reg(priv, I2C_SLVT, 0xBE, 0x03);
2744 		break;
2745 	case 7000000:
2746 		/* TRCG Nominal Rate */
2747 		cxd2841er_write_regs(priv, I2C_SLVT,
2748 				0x9F, nominalRate7bw[priv->xtal], 5);
2749 		/*  Group delay equaliser settings for ASCOT tuners optimized */
2750 		if (priv->flags & CXD2841ER_ASCOT)
2751 			cxd2841er_write_regs(priv, I2C_SLVT,
2752 				0xA6, itbCoef7bw[priv->xtal], 14);
2753 
2754 		/* IF freq setting */
2755 		ifhz = cxd2841er_get_if_hz(priv, 4150000);
2756 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2757 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2758 		data[1] = (u8)((iffreq >> 8) & 0xff);
2759 		data[2] = (u8)(iffreq & 0xff);
2760 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2761 
2762 		/* System bandwidth setting */
2763 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xd7, 0x02, 0x7);
2764 
2765 		/* Demod core latency setting */
2766 		data[0] = 0x1A;
2767 		data[1] = 0xFA;
2768 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
2769 
2770 		/* Acquisition optimization setting */
2771 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x12);
2772 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x71, 0x03, 0x07);
2773 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x15);
2774 		cxd2841er_write_reg(priv, I2C_SLVT, 0xBE, 0x02);
2775 		break;
2776 	case 6000000:
2777 		/* TRCG Nominal Rate */
2778 		cxd2841er_write_regs(priv, I2C_SLVT,
2779 				0x9F, nominalRate6bw[priv->xtal], 5);
2780 		/*  Group delay equaliser settings for ASCOT tuners optimized */
2781 		if (priv->flags & CXD2841ER_ASCOT)
2782 			cxd2841er_write_regs(priv, I2C_SLVT,
2783 				0xA6, itbCoef6bw[priv->xtal], 14);
2784 
2785 		/* IF freq setting */
2786 		ifhz = cxd2841er_get_if_hz(priv, 3550000);
2787 		iffreq = cxd2841er_calc_iffreq_xtal(priv->xtal, ifhz);
2788 		data[0] = (u8) ((iffreq >> 16) & 0xff);
2789 		data[1] = (u8)((iffreq >> 8) & 0xff);
2790 		data[2] = (u8)(iffreq & 0xff);
2791 		cxd2841er_write_regs(priv, I2C_SLVT, 0xB6, data, 3);
2792 
2793 		/* System bandwidth setting */
2794 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xd7, 0x04, 0x7);
2795 
2796 		/* Demod core latency setting */
2797 		if (priv->xtal == SONY_XTAL_24000) {
2798 			data[0] = 0x1F;
2799 			data[1] = 0x79;
2800 		} else {
2801 			data[0] = 0x1A;
2802 			data[1] = 0xE2;
2803 		}
2804 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
2805 
2806 		/* Acquisition optimization setting */
2807 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x12);
2808 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x71, 0x07, 0x07);
2809 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x15);
2810 		cxd2841er_write_reg(priv, I2C_SLVT, 0xBE, 0x02);
2811 		break;
2812 	default:
2813 		dev_dbg(&priv->i2c->dev, "%s(): invalid bandwidth %d\n",
2814 				__func__, bandwidth);
2815 		return -EINVAL;
2816 	}
2817 	return 0;
2818 }
2819 
2820 static int cxd2841er_sleep_tc_to_active_c_band(struct cxd2841er_priv *priv,
2821 					       u32 bandwidth)
2822 {
2823 	u8 bw7_8mhz_b10_a6[] = {
2824 		0x2D, 0xC7, 0x04, 0xF4, 0x07, 0xC5, 0x2A, 0xB8,
2825 		0x27, 0x9E, 0x27, 0xA4, 0x29, 0xAB };
2826 	u8 bw6mhz_b10_a6[] = {
2827 		0x27, 0xA7, 0x28, 0xB3, 0x02, 0xF0, 0x01, 0xE8,
2828 		0x00, 0xCF, 0x00, 0xE6, 0x23, 0xA4 };
2829 	u8 b10_b6[3];
2830 	u32 iffreq, ifhz;
2831 
2832 	if (bandwidth != 6000000 &&
2833 			bandwidth != 7000000 &&
2834 			bandwidth != 8000000) {
2835 		dev_info(&priv->i2c->dev, "%s(): unsupported bandwidth %d. Forcing 8Mhz!\n",
2836 				__func__, bandwidth);
2837 		bandwidth = 8000000;
2838 	}
2839 
2840 	dev_dbg(&priv->i2c->dev, "%s() bw=%d\n", __func__, bandwidth);
2841 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2842 	switch (bandwidth) {
2843 	case 8000000:
2844 	case 7000000:
2845 		if (priv->flags & CXD2841ER_ASCOT)
2846 			cxd2841er_write_regs(
2847 				priv, I2C_SLVT, 0xa6,
2848 				bw7_8mhz_b10_a6, sizeof(bw7_8mhz_b10_a6));
2849 		ifhz = cxd2841er_get_if_hz(priv, 4900000);
2850 		iffreq = cxd2841er_calc_iffreq(ifhz);
2851 		break;
2852 	case 6000000:
2853 		if (priv->flags & CXD2841ER_ASCOT)
2854 			cxd2841er_write_regs(
2855 				priv, I2C_SLVT, 0xa6,
2856 				bw6mhz_b10_a6, sizeof(bw6mhz_b10_a6));
2857 		ifhz = cxd2841er_get_if_hz(priv, 3700000);
2858 		iffreq = cxd2841er_calc_iffreq(ifhz);
2859 		break;
2860 	default:
2861 		dev_err(&priv->i2c->dev, "%s(): unsupported bandwidth %d\n",
2862 			__func__, bandwidth);
2863 		return -EINVAL;
2864 	}
2865 	/* <IF freq setting> */
2866 	b10_b6[0] = (u8) ((iffreq >> 16) & 0xff);
2867 	b10_b6[1] = (u8)((iffreq >> 8) & 0xff);
2868 	b10_b6[2] = (u8)(iffreq & 0xff);
2869 	cxd2841er_write_regs(priv, I2C_SLVT, 0xb6, b10_b6, sizeof(b10_b6));
2870 	/* Set SLV-T Bank : 0x11 */
2871 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x11);
2872 	switch (bandwidth) {
2873 	case 8000000:
2874 	case 7000000:
2875 		cxd2841er_set_reg_bits(
2876 			priv, I2C_SLVT, 0xa3, 0x00, 0x1f);
2877 		break;
2878 	case 6000000:
2879 		cxd2841er_set_reg_bits(
2880 			priv, I2C_SLVT, 0xa3, 0x14, 0x1f);
2881 		break;
2882 	}
2883 	/* Set SLV-T Bank : 0x40 */
2884 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
2885 	switch (bandwidth) {
2886 	case 8000000:
2887 		cxd2841er_set_reg_bits(
2888 			priv, I2C_SLVT, 0x26, 0x0b, 0x0f);
2889 		cxd2841er_write_reg(priv, I2C_SLVT,  0x27, 0x3e);
2890 		break;
2891 	case 7000000:
2892 		cxd2841er_set_reg_bits(
2893 			priv, I2C_SLVT, 0x26, 0x09, 0x0f);
2894 		cxd2841er_write_reg(priv, I2C_SLVT,  0x27, 0xd6);
2895 		break;
2896 	case 6000000:
2897 		cxd2841er_set_reg_bits(
2898 			priv, I2C_SLVT, 0x26, 0x08, 0x0f);
2899 		cxd2841er_write_reg(priv, I2C_SLVT,  0x27, 0x6e);
2900 		break;
2901 	}
2902 	return 0;
2903 }
2904 
2905 static int cxd2841er_sleep_tc_to_active_t(struct cxd2841er_priv *priv,
2906 					  u32 bandwidth)
2907 {
2908 	u8 data[2] = { 0x09, 0x54 };
2909 	u8 data24m[3] = {0xDC, 0x6C, 0x00};
2910 
2911 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
2912 	cxd2841er_set_ts_clock_mode(priv, SYS_DVBT);
2913 	/* Set SLV-X Bank : 0x00 */
2914 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
2915 	/* Set demod mode */
2916 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, 0x01);
2917 	/* Set SLV-T Bank : 0x00 */
2918 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
2919 	/* Enable demod clock */
2920 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x01);
2921 	/* Disable RF level monitor */
2922 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x00);
2923 	/* Enable ADC clock */
2924 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
2925 	/* Enable ADC 1 */
2926 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x1a);
2927 	/* Enable ADC 2 & 3 */
2928 	if (priv->xtal == SONY_XTAL_41000) {
2929 		data[0] = 0x0A;
2930 		data[1] = 0xD4;
2931 	}
2932 	cxd2841er_write_regs(priv, I2C_SLVT, 0x43, data, 2);
2933 	/* Enable ADC 4 */
2934 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x00);
2935 	/* Set SLV-T Bank : 0x10 */
2936 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2937 	/* IFAGC gain settings */
2938 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xd2, 0x0c, 0x1f);
2939 	/* Set SLV-T Bank : 0x11 */
2940 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x11);
2941 	/* BBAGC TARGET level setting */
2942 	cxd2841er_write_reg(priv, I2C_SLVT, 0x6a, 0x50);
2943 	/* Set SLV-T Bank : 0x10 */
2944 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2945 	/* ASCOT setting */
2946 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xa5,
2947 		((priv->flags & CXD2841ER_ASCOT) ? 0x01 : 0x00), 0x01);
2948 	/* Set SLV-T Bank : 0x18 */
2949 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x18);
2950 	/* Pre-RS BER moniter setting */
2951 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x36, 0x40, 0x07);
2952 	/* FEC Auto Recovery setting */
2953 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x30, 0x01, 0x01);
2954 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x31, 0x01, 0x01);
2955 	/* Set SLV-T Bank : 0x00 */
2956 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
2957 	/* TSIF setting */
2958 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xce, 0x01, 0x01);
2959 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xcf, 0x01, 0x01);
2960 
2961 	if (priv->xtal == SONY_XTAL_24000) {
2962 		/* Set SLV-T Bank : 0x10 */
2963 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
2964 		cxd2841er_write_reg(priv, I2C_SLVT, 0xBF, 0x60);
2965 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x18);
2966 		cxd2841er_write_regs(priv, I2C_SLVT, 0x24, data24m, 3);
2967 	}
2968 
2969 	cxd2841er_sleep_tc_to_active_t_band(priv, bandwidth);
2970 	/* Set SLV-T Bank : 0x00 */
2971 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
2972 	/* Disable HiZ Setting 1 */
2973 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x28);
2974 	/* Disable HiZ Setting 2 */
2975 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0x00);
2976 	priv->state = STATE_ACTIVE_TC;
2977 	return 0;
2978 }
2979 
2980 static int cxd2841er_sleep_tc_to_active_t2(struct cxd2841er_priv *priv,
2981 					   u32 bandwidth)
2982 {
2983 	u8 data[MAX_WRITE_REGSIZE];
2984 
2985 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
2986 	cxd2841er_set_ts_clock_mode(priv, SYS_DVBT2);
2987 	/* Set SLV-X Bank : 0x00 */
2988 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
2989 	/* Set demod mode */
2990 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, 0x02);
2991 	/* Set SLV-T Bank : 0x00 */
2992 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
2993 	/* Enable demod clock */
2994 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x01);
2995 	/* Disable RF level monitor */
2996 	cxd2841er_write_reg(priv, I2C_SLVT, 0x59, 0x00);
2997 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x00);
2998 	/* Enable ADC clock */
2999 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
3000 	/* Enable ADC 1 */
3001 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x1a);
3002 
3003 	if (priv->xtal == SONY_XTAL_41000) {
3004 		data[0] = 0x0A;
3005 		data[1] = 0xD4;
3006 	} else {
3007 		data[0] = 0x09;
3008 		data[1] = 0x54;
3009 	}
3010 
3011 	cxd2841er_write_regs(priv, I2C_SLVT, 0x43, data, 2);
3012 	/* Enable ADC 4 */
3013 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x00);
3014 	/* Set SLV-T Bank : 0x10 */
3015 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
3016 	/* IFAGC gain settings */
3017 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xd2, 0x0c, 0x1f);
3018 	/* Set SLV-T Bank : 0x11 */
3019 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x11);
3020 	/* BBAGC TARGET level setting */
3021 	cxd2841er_write_reg(priv, I2C_SLVT, 0x6a, 0x50);
3022 	/* Set SLV-T Bank : 0x10 */
3023 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
3024 	/* ASCOT setting */
3025 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xa5,
3026 		((priv->flags & CXD2841ER_ASCOT) ? 0x01 : 0x00), 0x01);
3027 	/* Set SLV-T Bank : 0x20 */
3028 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x20);
3029 	/* Acquisition optimization setting */
3030 	cxd2841er_write_reg(priv, I2C_SLVT, 0x8b, 0x3c);
3031 	/* Set SLV-T Bank : 0x2b */
3032 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2b);
3033 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x76, 0x20, 0x70);
3034 	/* Set SLV-T Bank : 0x23 */
3035 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x23);
3036 	/* L1 Control setting */
3037 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xE6, 0x00, 0x03);
3038 	/* Set SLV-T Bank : 0x00 */
3039 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3040 	/* TSIF setting */
3041 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xce, 0x01, 0x01);
3042 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xcf, 0x01, 0x01);
3043 	/* DVB-T2 initial setting */
3044 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x13);
3045 	cxd2841er_write_reg(priv, I2C_SLVT, 0x83, 0x10);
3046 	cxd2841er_write_reg(priv, I2C_SLVT, 0x86, 0x34);
3047 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x9e, 0x09, 0x0f);
3048 	cxd2841er_write_reg(priv, I2C_SLVT, 0x9f, 0xd8);
3049 	/* Set SLV-T Bank : 0x2a */
3050 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2a);
3051 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x38, 0x04, 0x0f);
3052 	/* Set SLV-T Bank : 0x2b */
3053 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2b);
3054 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x11, 0x20, 0x3f);
3055 
3056 	/* 24MHz Xtal setting */
3057 	if (priv->xtal == SONY_XTAL_24000) {
3058 		/* Set SLV-T Bank : 0x11 */
3059 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x11);
3060 		data[0] = 0xEB;
3061 		data[1] = 0x03;
3062 		data[2] = 0x3B;
3063 		cxd2841er_write_regs(priv, I2C_SLVT, 0x33, data, 3);
3064 
3065 		/* Set SLV-T Bank : 0x20 */
3066 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x20);
3067 		data[0] = 0x5E;
3068 		data[1] = 0x5E;
3069 		data[2] = 0x47;
3070 		cxd2841er_write_regs(priv, I2C_SLVT, 0x95, data, 3);
3071 
3072 		cxd2841er_write_reg(priv, I2C_SLVT, 0x99, 0x18);
3073 
3074 		data[0] = 0x3F;
3075 		data[1] = 0xFF;
3076 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD9, data, 2);
3077 
3078 		/* Set SLV-T Bank : 0x24 */
3079 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x24);
3080 		data[0] = 0x0B;
3081 		data[1] = 0x72;
3082 		cxd2841er_write_regs(priv, I2C_SLVT, 0x34, data, 2);
3083 
3084 		data[0] = 0x93;
3085 		data[1] = 0xF3;
3086 		data[2] = 0x00;
3087 		cxd2841er_write_regs(priv, I2C_SLVT, 0xD2, data, 3);
3088 
3089 		data[0] = 0x05;
3090 		data[1] = 0xB8;
3091 		data[2] = 0xD8;
3092 		cxd2841er_write_regs(priv, I2C_SLVT, 0xDD, data, 3);
3093 
3094 		cxd2841er_write_reg(priv, I2C_SLVT, 0xE0, 0x00);
3095 
3096 		/* Set SLV-T Bank : 0x25 */
3097 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x25);
3098 		cxd2841er_write_reg(priv, I2C_SLVT, 0xED, 0x60);
3099 
3100 		/* Set SLV-T Bank : 0x27 */
3101 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x27);
3102 		cxd2841er_write_reg(priv, I2C_SLVT, 0xFA, 0x34);
3103 
3104 		/* Set SLV-T Bank : 0x2B */
3105 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2B);
3106 		cxd2841er_write_reg(priv, I2C_SLVT, 0x4B, 0x2F);
3107 		cxd2841er_write_reg(priv, I2C_SLVT, 0x9E, 0x0E);
3108 
3109 		/* Set SLV-T Bank : 0x2D */
3110 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x2D);
3111 		data[0] = 0x89;
3112 		data[1] = 0x89;
3113 		cxd2841er_write_regs(priv, I2C_SLVT, 0x24, data, 2);
3114 
3115 		/* Set SLV-T Bank : 0x5E */
3116 		cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x5E);
3117 		data[0] = 0x24;
3118 		data[1] = 0x95;
3119 		cxd2841er_write_regs(priv, I2C_SLVT, 0x8C, data, 2);
3120 	}
3121 
3122 	cxd2841er_sleep_tc_to_active_t2_band(priv, bandwidth);
3123 
3124 	/* Set SLV-T Bank : 0x00 */
3125 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3126 	/* Disable HiZ Setting 1 */
3127 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x28);
3128 	/* Disable HiZ Setting 2 */
3129 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0x00);
3130 	priv->state = STATE_ACTIVE_TC;
3131 	return 0;
3132 }
3133 
3134 /* ISDB-Tb part */
3135 static int cxd2841er_sleep_tc_to_active_i(struct cxd2841er_priv *priv,
3136 		u32 bandwidth)
3137 {
3138 	u8 data[2] = { 0x09, 0x54 };
3139 	u8 data24m[2] = {0x60, 0x00};
3140 	u8 data24m2[3] = {0xB7, 0x1B, 0x00};
3141 
3142 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3143 	cxd2841er_set_ts_clock_mode(priv, SYS_DVBT);
3144 	/* Set SLV-X Bank : 0x00 */
3145 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
3146 	/* Set demod mode */
3147 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, 0x06);
3148 	/* Set SLV-T Bank : 0x00 */
3149 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3150 	/* Enable demod clock */
3151 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x01);
3152 	/* Enable RF level monitor */
3153 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x01);
3154 	cxd2841er_write_reg(priv, I2C_SLVT, 0x59, 0x01);
3155 	/* Enable ADC clock */
3156 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
3157 	/* Enable ADC 1 */
3158 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x1a);
3159 	/* xtal freq 20.5MHz or 24M */
3160 	cxd2841er_write_regs(priv, I2C_SLVT, 0x43, data, 2);
3161 	/* Enable ADC 4 */
3162 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x00);
3163 	/* ASCOT setting */
3164 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xa5,
3165 		((priv->flags & CXD2841ER_ASCOT) ? 0x01 : 0x00), 0x01);
3166 	/* FEC Auto Recovery setting */
3167 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x30, 0x01, 0x01);
3168 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x31, 0x00, 0x01);
3169 	/* ISDB-T initial setting */
3170 	/* Set SLV-T Bank : 0x00 */
3171 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3172 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xce, 0x00, 0x01);
3173 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xcf, 0x00, 0x01);
3174 	/* Set SLV-T Bank : 0x10 */
3175 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
3176 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x69, 0x04, 0x07);
3177 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x6B, 0x03, 0x07);
3178 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x9D, 0x50, 0xFF);
3179 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xD3, 0x06, 0x1F);
3180 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xED, 0x00, 0x01);
3181 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xE2, 0xCE, 0x80);
3182 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xF2, 0x13, 0x10);
3183 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xDE, 0x2E, 0x3F);
3184 	/* Set SLV-T Bank : 0x15 */
3185 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x15);
3186 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xDE, 0x02, 0x03);
3187 	/* Set SLV-T Bank : 0x1E */
3188 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x1E);
3189 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x73, 0x68, 0xFF);
3190 	/* Set SLV-T Bank : 0x63 */
3191 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x63);
3192 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0x81, 0x00, 0x01);
3193 
3194 	/* for xtal 24MHz */
3195 	/* Set SLV-T Bank : 0x10 */
3196 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
3197 	cxd2841er_write_regs(priv, I2C_SLVT, 0xBF, data24m, 2);
3198 	/* Set SLV-T Bank : 0x60 */
3199 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60);
3200 	cxd2841er_write_regs(priv, I2C_SLVT, 0xA8, data24m2, 3);
3201 
3202 	cxd2841er_sleep_tc_to_active_i_band(priv, bandwidth);
3203 	/* Set SLV-T Bank : 0x00 */
3204 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3205 	/* Disable HiZ Setting 1 */
3206 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x28);
3207 	/* Disable HiZ Setting 2 */
3208 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0x00);
3209 	priv->state = STATE_ACTIVE_TC;
3210 	return 0;
3211 }
3212 
3213 static int cxd2841er_sleep_tc_to_active_c(struct cxd2841er_priv *priv,
3214 					  u32 bandwidth)
3215 {
3216 	u8 data[2] = { 0x09, 0x54 };
3217 
3218 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3219 	cxd2841er_set_ts_clock_mode(priv, SYS_DVBC_ANNEX_A);
3220 	/* Set SLV-X Bank : 0x00 */
3221 	cxd2841er_write_reg(priv, I2C_SLVX, 0x00, 0x00);
3222 	/* Set demod mode */
3223 	cxd2841er_write_reg(priv, I2C_SLVX, 0x17, 0x04);
3224 	/* Set SLV-T Bank : 0x00 */
3225 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3226 	/* Enable demod clock */
3227 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2c, 0x01);
3228 	/* Disable RF level monitor */
3229 	cxd2841er_write_reg(priv, I2C_SLVT, 0x59, 0x00);
3230 	cxd2841er_write_reg(priv, I2C_SLVT, 0x2f, 0x00);
3231 	/* Enable ADC clock */
3232 	cxd2841er_write_reg(priv, I2C_SLVT, 0x30, 0x00);
3233 	/* Enable ADC 1 */
3234 	cxd2841er_write_reg(priv, I2C_SLVT, 0x41, 0x1a);
3235 	/* xtal freq 20.5MHz */
3236 	cxd2841er_write_regs(priv, I2C_SLVT, 0x43, data, 2);
3237 	/* Enable ADC 4 */
3238 	cxd2841er_write_reg(priv, I2C_SLVX, 0x18, 0x00);
3239 	/* Set SLV-T Bank : 0x10 */
3240 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
3241 	/* IFAGC gain settings */
3242 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xd2, 0x09, 0x1f);
3243 	/* Set SLV-T Bank : 0x11 */
3244 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x11);
3245 	/* BBAGC TARGET level setting */
3246 	cxd2841er_write_reg(priv, I2C_SLVT, 0x6a, 0x48);
3247 	/* Set SLV-T Bank : 0x10 */
3248 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
3249 	/* ASCOT setting */
3250 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xa5,
3251 		((priv->flags & CXD2841ER_ASCOT) ? 0x01 : 0x00), 0x01);
3252 	/* Set SLV-T Bank : 0x40 */
3253 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x40);
3254 	/* Demod setting */
3255 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xc3, 0x00, 0x04);
3256 	/* Set SLV-T Bank : 0x00 */
3257 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3258 	/* TSIF setting */
3259 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xce, 0x01, 0x01);
3260 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xcf, 0x01, 0x01);
3261 
3262 	cxd2841er_sleep_tc_to_active_c_band(priv, bandwidth);
3263 	/* Set SLV-T Bank : 0x00 */
3264 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3265 	/* Disable HiZ Setting 1 */
3266 	cxd2841er_write_reg(priv, I2C_SLVT, 0x80, 0x28);
3267 	/* Disable HiZ Setting 2 */
3268 	cxd2841er_write_reg(priv, I2C_SLVT, 0x81, 0x00);
3269 	priv->state = STATE_ACTIVE_TC;
3270 	return 0;
3271 }
3272 
3273 static int cxd2841er_get_frontend(struct dvb_frontend *fe,
3274 				  struct dtv_frontend_properties *p)
3275 {
3276 	enum fe_status status = 0;
3277 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3278 
3279 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3280 	if (priv->state == STATE_ACTIVE_S)
3281 		cxd2841er_read_status_s(fe, &status);
3282 	else if (priv->state == STATE_ACTIVE_TC)
3283 		cxd2841er_read_status_tc(fe, &status);
3284 
3285 	if (priv->state == STATE_ACTIVE_TC || priv->state == STATE_ACTIVE_S)
3286 		cxd2841er_read_signal_strength(fe);
3287 	else
3288 		p->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3289 
3290 	if (status & FE_HAS_LOCK) {
3291 		cxd2841er_read_snr(fe);
3292 		cxd2841er_read_ucblocks(fe);
3293 
3294 		cxd2841er_read_ber(fe);
3295 	} else {
3296 		p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3297 		p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3298 		p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3299 		p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3300 	}
3301 	return 0;
3302 }
3303 
3304 static int cxd2841er_set_frontend_s(struct dvb_frontend *fe)
3305 {
3306 	int ret = 0, i, timeout, carr_offset;
3307 	enum fe_status status;
3308 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3309 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
3310 	u32 symbol_rate = p->symbol_rate/1000;
3311 
3312 	dev_dbg(&priv->i2c->dev, "%s(): %s frequency=%d symbol_rate=%d xtal=%d\n",
3313 		__func__,
3314 		(p->delivery_system == SYS_DVBS ? "DVB-S" : "DVB-S2"),
3315 		 p->frequency, symbol_rate, priv->xtal);
3316 
3317 	if (priv->flags & CXD2841ER_EARLY_TUNE)
3318 		cxd2841er_tuner_set(fe);
3319 
3320 	switch (priv->state) {
3321 	case STATE_SLEEP_S:
3322 		ret = cxd2841er_sleep_s_to_active_s(
3323 			priv, p->delivery_system, symbol_rate);
3324 		break;
3325 	case STATE_ACTIVE_S:
3326 		ret = cxd2841er_retune_active(priv, p);
3327 		break;
3328 	default:
3329 		dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
3330 			__func__, priv->state);
3331 		ret = -EINVAL;
3332 		goto done;
3333 	}
3334 	if (ret) {
3335 		dev_dbg(&priv->i2c->dev, "%s(): tune failed\n", __func__);
3336 		goto done;
3337 	}
3338 
3339 	if (!(priv->flags & CXD2841ER_EARLY_TUNE))
3340 		cxd2841er_tuner_set(fe);
3341 
3342 	cxd2841er_tune_done(priv);
3343 	timeout = ((3000000 + (symbol_rate - 1)) / symbol_rate) + 150;
3344 
3345 	i = 0;
3346 	do {
3347 		usleep_range(CXD2841ER_DVBS_POLLING_INVL*1000,
3348 			(CXD2841ER_DVBS_POLLING_INVL + 2) * 1000);
3349 		cxd2841er_read_status_s(fe, &status);
3350 		if (status & FE_HAS_LOCK)
3351 			break;
3352 		i++;
3353 	} while (i < timeout / CXD2841ER_DVBS_POLLING_INVL);
3354 
3355 	if (status & FE_HAS_LOCK) {
3356 		if (cxd2841er_get_carrier_offset_s_s2(
3357 				priv, &carr_offset)) {
3358 			ret = -EINVAL;
3359 			goto done;
3360 		}
3361 		dev_dbg(&priv->i2c->dev, "%s(): carrier_offset=%d\n",
3362 			__func__, carr_offset);
3363 	}
3364 done:
3365 	/* Reset stats */
3366 	p->strength.stat[0].scale = FE_SCALE_RELATIVE;
3367 	p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3368 	p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3369 	p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3370 	p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3371 
3372 	return ret;
3373 }
3374 
3375 static int cxd2841er_set_frontend_tc(struct dvb_frontend *fe)
3376 {
3377 	int ret = 0, timeout;
3378 	enum fe_status status;
3379 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3380 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
3381 
3382 	dev_dbg(&priv->i2c->dev, "%s() delivery_system=%d bandwidth_hz=%d\n",
3383 		 __func__, p->delivery_system, p->bandwidth_hz);
3384 
3385 	if (priv->flags & CXD2841ER_EARLY_TUNE)
3386 		cxd2841er_tuner_set(fe);
3387 
3388 	/* deconfigure/put demod to sleep on delsys switch if active */
3389 	if (priv->state == STATE_ACTIVE_TC &&
3390 	    priv->system != p->delivery_system) {
3391 		dev_dbg(&priv->i2c->dev, "%s(): old_delsys=%d, new_delsys=%d -> sleep\n",
3392 			 __func__, priv->system, p->delivery_system);
3393 		cxd2841er_sleep_tc(fe);
3394 	}
3395 
3396 	if (p->delivery_system == SYS_DVBT) {
3397 		priv->system = SYS_DVBT;
3398 		switch (priv->state) {
3399 		case STATE_SLEEP_TC:
3400 			ret = cxd2841er_sleep_tc_to_active_t(
3401 				priv, p->bandwidth_hz);
3402 			break;
3403 		case STATE_ACTIVE_TC:
3404 			ret = cxd2841er_retune_active(priv, p);
3405 			break;
3406 		default:
3407 			dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
3408 				__func__, priv->state);
3409 			ret = -EINVAL;
3410 		}
3411 	} else if (p->delivery_system == SYS_DVBT2) {
3412 		priv->system = SYS_DVBT2;
3413 		cxd2841er_dvbt2_set_plp_config(priv,
3414 			(int)(p->stream_id > 255), p->stream_id);
3415 		cxd2841er_dvbt2_set_profile(priv, DVBT2_PROFILE_BASE);
3416 		switch (priv->state) {
3417 		case STATE_SLEEP_TC:
3418 			ret = cxd2841er_sleep_tc_to_active_t2(priv,
3419 				p->bandwidth_hz);
3420 			break;
3421 		case STATE_ACTIVE_TC:
3422 			ret = cxd2841er_retune_active(priv, p);
3423 			break;
3424 		default:
3425 			dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
3426 				__func__, priv->state);
3427 			ret = -EINVAL;
3428 		}
3429 	} else if (p->delivery_system == SYS_ISDBT) {
3430 		priv->system = SYS_ISDBT;
3431 		switch (priv->state) {
3432 		case STATE_SLEEP_TC:
3433 			ret = cxd2841er_sleep_tc_to_active_i(
3434 					priv, p->bandwidth_hz);
3435 			break;
3436 		case STATE_ACTIVE_TC:
3437 			ret = cxd2841er_retune_active(priv, p);
3438 			break;
3439 		default:
3440 			dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
3441 					__func__, priv->state);
3442 			ret = -EINVAL;
3443 		}
3444 	} else if (p->delivery_system == SYS_DVBC_ANNEX_A ||
3445 			p->delivery_system == SYS_DVBC_ANNEX_C) {
3446 		priv->system = SYS_DVBC_ANNEX_A;
3447 		/* correct bandwidth */
3448 		if (p->bandwidth_hz != 6000000 &&
3449 				p->bandwidth_hz != 7000000 &&
3450 				p->bandwidth_hz != 8000000) {
3451 			p->bandwidth_hz = 8000000;
3452 			dev_dbg(&priv->i2c->dev, "%s(): forcing bandwidth to %d\n",
3453 					__func__, p->bandwidth_hz);
3454 		}
3455 
3456 		switch (priv->state) {
3457 		case STATE_SLEEP_TC:
3458 			ret = cxd2841er_sleep_tc_to_active_c(
3459 				priv, p->bandwidth_hz);
3460 			break;
3461 		case STATE_ACTIVE_TC:
3462 			ret = cxd2841er_retune_active(priv, p);
3463 			break;
3464 		default:
3465 			dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n",
3466 				__func__, priv->state);
3467 			ret = -EINVAL;
3468 		}
3469 	} else {
3470 		dev_dbg(&priv->i2c->dev,
3471 			"%s(): invalid delivery system %d\n",
3472 			__func__, p->delivery_system);
3473 		ret = -EINVAL;
3474 	}
3475 	if (ret)
3476 		goto done;
3477 
3478 	if (!(priv->flags & CXD2841ER_EARLY_TUNE))
3479 		cxd2841er_tuner_set(fe);
3480 
3481 	cxd2841er_tune_done(priv);
3482 
3483 	if (priv->flags & CXD2841ER_NO_WAIT_LOCK)
3484 		goto done;
3485 
3486 	timeout = 2500;
3487 	while (timeout > 0) {
3488 		ret = cxd2841er_read_status_tc(fe, &status);
3489 		if (ret)
3490 			goto done;
3491 		if (status & FE_HAS_LOCK)
3492 			break;
3493 		msleep(20);
3494 		timeout -= 20;
3495 	}
3496 	if (timeout < 0)
3497 		dev_dbg(&priv->i2c->dev,
3498 			"%s(): LOCK wait timeout\n", __func__);
3499 done:
3500 	return ret;
3501 }
3502 
3503 static int cxd2841er_tune_s(struct dvb_frontend *fe,
3504 			    bool re_tune,
3505 			    unsigned int mode_flags,
3506 			    unsigned int *delay,
3507 			    enum fe_status *status)
3508 {
3509 	int ret, carrier_offset;
3510 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3511 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
3512 
3513 	dev_dbg(&priv->i2c->dev, "%s() re_tune=%d\n", __func__, re_tune);
3514 	if (re_tune) {
3515 		ret = cxd2841er_set_frontend_s(fe);
3516 		if (ret)
3517 			return ret;
3518 		cxd2841er_read_status_s(fe, status);
3519 		if (*status & FE_HAS_LOCK) {
3520 			if (cxd2841er_get_carrier_offset_s_s2(
3521 					priv, &carrier_offset))
3522 				return -EINVAL;
3523 			p->frequency += carrier_offset;
3524 			ret = cxd2841er_set_frontend_s(fe);
3525 			if (ret)
3526 				return ret;
3527 		}
3528 	}
3529 	*delay = HZ / 5;
3530 	return cxd2841er_read_status_s(fe, status);
3531 }
3532 
3533 static int cxd2841er_tune_tc(struct dvb_frontend *fe,
3534 			     bool re_tune,
3535 			     unsigned int mode_flags,
3536 			     unsigned int *delay,
3537 			     enum fe_status *status)
3538 {
3539 	int ret, carrier_offset;
3540 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3541 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
3542 
3543 	dev_dbg(&priv->i2c->dev, "%s(): re_tune %d bandwidth=%d\n", __func__,
3544 			re_tune, p->bandwidth_hz);
3545 	if (re_tune) {
3546 		ret = cxd2841er_set_frontend_tc(fe);
3547 		if (ret)
3548 			return ret;
3549 		cxd2841er_read_status_tc(fe, status);
3550 		if (*status & FE_HAS_LOCK) {
3551 			switch (priv->system) {
3552 			case SYS_ISDBT:
3553 				ret = cxd2841er_get_carrier_offset_i(
3554 						priv, p->bandwidth_hz,
3555 						&carrier_offset);
3556 				if (ret)
3557 					return ret;
3558 				break;
3559 			case SYS_DVBT:
3560 				ret = cxd2841er_get_carrier_offset_t(
3561 					priv, p->bandwidth_hz,
3562 					&carrier_offset);
3563 				if (ret)
3564 					return ret;
3565 				break;
3566 			case SYS_DVBT2:
3567 				ret = cxd2841er_get_carrier_offset_t2(
3568 					priv, p->bandwidth_hz,
3569 					&carrier_offset);
3570 				if (ret)
3571 					return ret;
3572 				break;
3573 			case SYS_DVBC_ANNEX_A:
3574 				ret = cxd2841er_get_carrier_offset_c(
3575 					priv, &carrier_offset);
3576 				if (ret)
3577 					return ret;
3578 				break;
3579 			default:
3580 				dev_dbg(&priv->i2c->dev,
3581 					"%s(): invalid delivery system %d\n",
3582 					__func__, priv->system);
3583 				return -EINVAL;
3584 			}
3585 			dev_dbg(&priv->i2c->dev, "%s(): carrier offset %d\n",
3586 				__func__, carrier_offset);
3587 			p->frequency += carrier_offset;
3588 			ret = cxd2841er_set_frontend_tc(fe);
3589 			if (ret)
3590 				return ret;
3591 		}
3592 	}
3593 	*delay = HZ / 5;
3594 	return cxd2841er_read_status_tc(fe, status);
3595 }
3596 
3597 static int cxd2841er_sleep_s(struct dvb_frontend *fe)
3598 {
3599 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3600 
3601 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3602 	cxd2841er_active_s_to_sleep_s(fe->demodulator_priv);
3603 	cxd2841er_sleep_s_to_shutdown(fe->demodulator_priv);
3604 	return 0;
3605 }
3606 
3607 static int cxd2841er_sleep_tc(struct dvb_frontend *fe)
3608 {
3609 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3610 
3611 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3612 
3613 	if (priv->state == STATE_ACTIVE_TC) {
3614 		switch (priv->system) {
3615 		case SYS_DVBT:
3616 			cxd2841er_active_t_to_sleep_tc(priv);
3617 			break;
3618 		case SYS_DVBT2:
3619 			cxd2841er_active_t2_to_sleep_tc(priv);
3620 			break;
3621 		case SYS_ISDBT:
3622 			cxd2841er_active_i_to_sleep_tc(priv);
3623 			break;
3624 		case SYS_DVBC_ANNEX_A:
3625 			cxd2841er_active_c_to_sleep_tc(priv);
3626 			break;
3627 		default:
3628 			dev_warn(&priv->i2c->dev,
3629 				"%s(): unknown delivery system %d\n",
3630 				__func__, priv->system);
3631 		}
3632 	}
3633 	if (priv->state != STATE_SLEEP_TC) {
3634 		dev_err(&priv->i2c->dev, "%s(): invalid state %d\n",
3635 			__func__, priv->state);
3636 		return -EINVAL;
3637 	}
3638 	return 0;
3639 }
3640 
3641 static int cxd2841er_shutdown_tc(struct dvb_frontend *fe)
3642 {
3643 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3644 
3645 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3646 
3647 	if (!cxd2841er_sleep_tc(fe))
3648 		cxd2841er_sleep_tc_to_shutdown(priv);
3649 	return 0;
3650 }
3651 
3652 static int cxd2841er_send_burst(struct dvb_frontend *fe,
3653 				enum fe_sec_mini_cmd burst)
3654 {
3655 	u8 data;
3656 	struct cxd2841er_priv *priv  = fe->demodulator_priv;
3657 
3658 	dev_dbg(&priv->i2c->dev, "%s(): burst mode %s\n", __func__,
3659 		(burst == SEC_MINI_A ? "A" : "B"));
3660 	if (priv->state != STATE_SLEEP_S &&
3661 			priv->state != STATE_ACTIVE_S) {
3662 		dev_err(&priv->i2c->dev, "%s(): invalid demod state %d\n",
3663 			__func__, priv->state);
3664 		return -EINVAL;
3665 	}
3666 	data = (burst == SEC_MINI_A ? 0 : 1);
3667 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xbb);
3668 	cxd2841er_write_reg(priv, I2C_SLVT, 0x34, 0x01);
3669 	cxd2841er_write_reg(priv, I2C_SLVT, 0x35, data);
3670 	return 0;
3671 }
3672 
3673 static int cxd2841er_set_tone(struct dvb_frontend *fe,
3674 			      enum fe_sec_tone_mode tone)
3675 {
3676 	u8 data;
3677 	struct cxd2841er_priv *priv  = fe->demodulator_priv;
3678 
3679 	dev_dbg(&priv->i2c->dev, "%s(): tone %s\n", __func__,
3680 		(tone == SEC_TONE_ON ? "On" : "Off"));
3681 	if (priv->state != STATE_SLEEP_S &&
3682 			priv->state != STATE_ACTIVE_S) {
3683 		dev_err(&priv->i2c->dev, "%s(): invalid demod state %d\n",
3684 			__func__, priv->state);
3685 		return -EINVAL;
3686 	}
3687 	data = (tone == SEC_TONE_ON ? 1 : 0);
3688 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xbb);
3689 	cxd2841er_write_reg(priv, I2C_SLVT, 0x36, data);
3690 	return 0;
3691 }
3692 
3693 static int cxd2841er_send_diseqc_msg(struct dvb_frontend *fe,
3694 				     struct dvb_diseqc_master_cmd *cmd)
3695 {
3696 	int i;
3697 	u8 data[12];
3698 	struct cxd2841er_priv *priv  = fe->demodulator_priv;
3699 
3700 	if (priv->state != STATE_SLEEP_S &&
3701 			priv->state != STATE_ACTIVE_S) {
3702 		dev_err(&priv->i2c->dev, "%s(): invalid demod state %d\n",
3703 			__func__, priv->state);
3704 		return -EINVAL;
3705 	}
3706 	dev_dbg(&priv->i2c->dev,
3707 		"%s(): cmd->len %d\n", __func__, cmd->msg_len);
3708 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xbb);
3709 	/* DiDEqC enable */
3710 	cxd2841er_write_reg(priv, I2C_SLVT, 0x33, 0x01);
3711 	/* cmd1 length & data */
3712 	cxd2841er_write_reg(priv, I2C_SLVT, 0x3d, cmd->msg_len);
3713 	memset(data, 0, sizeof(data));
3714 	for (i = 0; i < cmd->msg_len && i < sizeof(data); i++)
3715 		data[i] = cmd->msg[i];
3716 	cxd2841er_write_regs(priv, I2C_SLVT, 0x3e, data, sizeof(data));
3717 	/* repeat count for cmd1 */
3718 	cxd2841er_write_reg(priv, I2C_SLVT, 0x37, 1);
3719 	/* repeat count for cmd2: always 0 */
3720 	cxd2841er_write_reg(priv, I2C_SLVT, 0x38, 0);
3721 	/* start transmit */
3722 	cxd2841er_write_reg(priv, I2C_SLVT, 0x32, 0x01);
3723 	/* wait for 1 sec timeout */
3724 	for (i = 0; i < 50; i++) {
3725 		cxd2841er_read_reg(priv, I2C_SLVT, 0x10, data);
3726 		if (!data[0]) {
3727 			dev_dbg(&priv->i2c->dev,
3728 				"%s(): DiSEqC cmd has been sent\n", __func__);
3729 			return 0;
3730 		}
3731 		msleep(20);
3732 	}
3733 	dev_dbg(&priv->i2c->dev,
3734 		"%s(): DiSEqC cmd transmit timeout\n", __func__);
3735 	return -ETIMEDOUT;
3736 }
3737 
3738 static void cxd2841er_release(struct dvb_frontend *fe)
3739 {
3740 	struct cxd2841er_priv *priv  = fe->demodulator_priv;
3741 
3742 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3743 	kfree(priv);
3744 }
3745 
3746 static int cxd2841er_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
3747 {
3748 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3749 
3750 	dev_dbg(&priv->i2c->dev, "%s(): enable=%d\n", __func__, enable);
3751 	cxd2841er_set_reg_bits(
3752 		priv, I2C_SLVX, 0x8, (enable ? 0x01 : 0x00), 0x01);
3753 	return 0;
3754 }
3755 
3756 static enum dvbfe_algo cxd2841er_get_algo(struct dvb_frontend *fe)
3757 {
3758 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3759 
3760 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3761 	return DVBFE_ALGO_HW;
3762 }
3763 
3764 static void cxd2841er_init_stats(struct dvb_frontend *fe)
3765 {
3766 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
3767 
3768 	p->strength.len = 1;
3769 	p->strength.stat[0].scale = FE_SCALE_RELATIVE;
3770 	p->cnr.len = 1;
3771 	p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3772 	p->block_error.len = 1;
3773 	p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3774 	p->post_bit_error.len = 1;
3775 	p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3776 	p->post_bit_count.len = 1;
3777 	p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
3778 }
3779 
3780 
3781 static int cxd2841er_init_s(struct dvb_frontend *fe)
3782 {
3783 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3784 
3785 	/* sanity. force demod to SHUTDOWN state */
3786 	if (priv->state == STATE_SLEEP_S) {
3787 		dev_dbg(&priv->i2c->dev, "%s() forcing sleep->shutdown\n",
3788 				__func__);
3789 		cxd2841er_sleep_s_to_shutdown(priv);
3790 	} else if (priv->state == STATE_ACTIVE_S) {
3791 		dev_dbg(&priv->i2c->dev, "%s() forcing active->sleep->shutdown\n",
3792 				__func__);
3793 		cxd2841er_active_s_to_sleep_s(priv);
3794 		cxd2841er_sleep_s_to_shutdown(priv);
3795 	}
3796 
3797 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
3798 	cxd2841er_shutdown_to_sleep_s(priv);
3799 	/* SONY_DEMOD_CONFIG_SAT_IFAGCNEG set to 1 */
3800 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa0);
3801 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xb9, 0x01, 0x01);
3802 
3803 	cxd2841er_init_stats(fe);
3804 
3805 	return 0;
3806 }
3807 
3808 static int cxd2841er_init_tc(struct dvb_frontend *fe)
3809 {
3810 	struct cxd2841er_priv *priv = fe->demodulator_priv;
3811 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
3812 
3813 	dev_dbg(&priv->i2c->dev, "%s() bandwidth_hz=%d\n",
3814 			__func__, p->bandwidth_hz);
3815 	cxd2841er_shutdown_to_sleep_tc(priv);
3816 	/* SONY_DEMOD_CONFIG_IFAGCNEG = 1 (0 for NO_AGCNEG */
3817 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x10);
3818 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xcb,
3819 		((priv->flags & CXD2841ER_NO_AGCNEG) ? 0x00 : 0x40), 0x40);
3820 	/* SONY_DEMOD_CONFIG_IFAGC_ADC_FS = 0 */
3821 	cxd2841er_write_reg(priv, I2C_SLVT, 0xcd, 0x50);
3822 	/* SONY_DEMOD_CONFIG_PARALLEL_SEL = 1 */
3823 	cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00);
3824 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xc4,
3825 		((priv->flags & CXD2841ER_TS_SERIAL) ? 0x80 : 0x00), 0x80);
3826 
3827 	/* clear TSCFG bits 3+4 */
3828 	if (priv->flags & CXD2841ER_TSBITS)
3829 		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xc4, 0x00, 0x18);
3830 
3831 	cxd2841er_init_stats(fe);
3832 
3833 	return 0;
3834 }
3835 
3836 static const struct dvb_frontend_ops cxd2841er_dvbs_s2_ops;
3837 static struct dvb_frontend_ops cxd2841er_t_c_ops;
3838 
3839 static struct dvb_frontend *cxd2841er_attach(struct cxd2841er_config *cfg,
3840 					     struct i2c_adapter *i2c,
3841 					     u8 system)
3842 {
3843 	u8 chip_id = 0;
3844 	const char *type;
3845 	const char *name;
3846 	struct cxd2841er_priv *priv = NULL;
3847 
3848 	/* allocate memory for the internal state */
3849 	priv = kzalloc(sizeof(struct cxd2841er_priv), GFP_KERNEL);
3850 	if (!priv)
3851 		return NULL;
3852 	priv->i2c = i2c;
3853 	priv->config = cfg;
3854 	priv->i2c_addr_slvx = (cfg->i2c_addr + 4) >> 1;
3855 	priv->i2c_addr_slvt = (cfg->i2c_addr) >> 1;
3856 	priv->xtal = cfg->xtal;
3857 	priv->flags = cfg->flags;
3858 	priv->frontend.demodulator_priv = priv;
3859 	dev_info(&priv->i2c->dev,
3860 		"%s(): I2C adapter %p SLVX addr %x SLVT addr %x\n",
3861 		__func__, priv->i2c,
3862 		priv->i2c_addr_slvx, priv->i2c_addr_slvt);
3863 	chip_id = cxd2841er_chip_id(priv);
3864 	switch (chip_id) {
3865 	case CXD2837ER_CHIP_ID:
3866 		snprintf(cxd2841er_t_c_ops.info.name, 128,
3867 				"Sony CXD2837ER DVB-T/T2/C demodulator");
3868 		name = "CXD2837ER";
3869 		type = "C/T/T2";
3870 		break;
3871 	case CXD2838ER_CHIP_ID:
3872 		snprintf(cxd2841er_t_c_ops.info.name, 128,
3873 				"Sony CXD2838ER ISDB-T demodulator");
3874 		cxd2841er_t_c_ops.delsys[0] = SYS_ISDBT;
3875 		cxd2841er_t_c_ops.delsys[1] = SYS_UNDEFINED;
3876 		cxd2841er_t_c_ops.delsys[2] = SYS_UNDEFINED;
3877 		name = "CXD2838ER";
3878 		type = "ISDB-T";
3879 		break;
3880 	case CXD2841ER_CHIP_ID:
3881 		snprintf(cxd2841er_t_c_ops.info.name, 128,
3882 				"Sony CXD2841ER DVB-T/T2/C demodulator");
3883 		name = "CXD2841ER";
3884 		type = "T/T2/C/ISDB-T";
3885 		break;
3886 	case CXD2843ER_CHIP_ID:
3887 		snprintf(cxd2841er_t_c_ops.info.name, 128,
3888 				"Sony CXD2843ER DVB-T/T2/C/C2 demodulator");
3889 		name = "CXD2843ER";
3890 		type = "C/C2/T/T2";
3891 		break;
3892 	case CXD2854ER_CHIP_ID:
3893 		snprintf(cxd2841er_t_c_ops.info.name, 128,
3894 				"Sony CXD2854ER DVB-T/T2/C and ISDB-T demodulator");
3895 		cxd2841er_t_c_ops.delsys[3] = SYS_ISDBT;
3896 		name = "CXD2854ER";
3897 		type = "C/C2/T/T2/ISDB-T";
3898 		break;
3899 	default:
3900 		dev_err(&priv->i2c->dev, "%s(): invalid chip ID 0x%02x\n",
3901 				__func__, chip_id);
3902 		priv->frontend.demodulator_priv = NULL;
3903 		kfree(priv);
3904 		return NULL;
3905 	}
3906 
3907 	/* create dvb_frontend */
3908 	if (system == SYS_DVBS) {
3909 		memcpy(&priv->frontend.ops,
3910 			&cxd2841er_dvbs_s2_ops,
3911 			sizeof(struct dvb_frontend_ops));
3912 		type = "S/S2";
3913 	} else {
3914 		memcpy(&priv->frontend.ops,
3915 			&cxd2841er_t_c_ops,
3916 			sizeof(struct dvb_frontend_ops));
3917 	}
3918 
3919 	dev_info(&priv->i2c->dev,
3920 		"%s(): attaching %s DVB-%s frontend\n",
3921 		__func__, name, type);
3922 	dev_info(&priv->i2c->dev, "%s(): chip ID 0x%02x OK.\n",
3923 		__func__, chip_id);
3924 	return &priv->frontend;
3925 }
3926 
3927 struct dvb_frontend *cxd2841er_attach_s(struct cxd2841er_config *cfg,
3928 					struct i2c_adapter *i2c)
3929 {
3930 	return cxd2841er_attach(cfg, i2c, SYS_DVBS);
3931 }
3932 EXPORT_SYMBOL(cxd2841er_attach_s);
3933 
3934 struct dvb_frontend *cxd2841er_attach_t_c(struct cxd2841er_config *cfg,
3935 					struct i2c_adapter *i2c)
3936 {
3937 	return cxd2841er_attach(cfg, i2c, 0);
3938 }
3939 EXPORT_SYMBOL(cxd2841er_attach_t_c);
3940 
3941 static const struct dvb_frontend_ops cxd2841er_dvbs_s2_ops = {
3942 	.delsys = { SYS_DVBS, SYS_DVBS2 },
3943 	.info = {
3944 		.name		= "Sony CXD2841ER DVB-S/S2 demodulator",
3945 		.frequency_min	= 500000,
3946 		.frequency_max	= 2500000,
3947 		.frequency_stepsize	= 0,
3948 		.symbol_rate_min = 1000000,
3949 		.symbol_rate_max = 45000000,
3950 		.symbol_rate_tolerance = 500,
3951 		.caps = FE_CAN_INVERSION_AUTO |
3952 			FE_CAN_FEC_AUTO |
3953 			FE_CAN_QPSK,
3954 	},
3955 	.init = cxd2841er_init_s,
3956 	.sleep = cxd2841er_sleep_s,
3957 	.release = cxd2841er_release,
3958 	.set_frontend = cxd2841er_set_frontend_s,
3959 	.get_frontend = cxd2841er_get_frontend,
3960 	.read_status = cxd2841er_read_status_s,
3961 	.i2c_gate_ctrl = cxd2841er_i2c_gate_ctrl,
3962 	.get_frontend_algo = cxd2841er_get_algo,
3963 	.set_tone = cxd2841er_set_tone,
3964 	.diseqc_send_burst = cxd2841er_send_burst,
3965 	.diseqc_send_master_cmd = cxd2841er_send_diseqc_msg,
3966 	.tune = cxd2841er_tune_s
3967 };
3968 
3969 static struct dvb_frontend_ops cxd2841er_t_c_ops = {
3970 	.delsys = { SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A },
3971 	.info = {
3972 		.name	= "", /* will set in attach function */
3973 		.caps = FE_CAN_FEC_1_2 |
3974 			FE_CAN_FEC_2_3 |
3975 			FE_CAN_FEC_3_4 |
3976 			FE_CAN_FEC_5_6 |
3977 			FE_CAN_FEC_7_8 |
3978 			FE_CAN_FEC_AUTO |
3979 			FE_CAN_QPSK |
3980 			FE_CAN_QAM_16 |
3981 			FE_CAN_QAM_32 |
3982 			FE_CAN_QAM_64 |
3983 			FE_CAN_QAM_128 |
3984 			FE_CAN_QAM_256 |
3985 			FE_CAN_QAM_AUTO |
3986 			FE_CAN_TRANSMISSION_MODE_AUTO |
3987 			FE_CAN_GUARD_INTERVAL_AUTO |
3988 			FE_CAN_HIERARCHY_AUTO |
3989 			FE_CAN_MUTE_TS |
3990 			FE_CAN_2G_MODULATION,
3991 		.frequency_min = 42000000,
3992 		.frequency_max = 1002000000,
3993 		.symbol_rate_min = 870000,
3994 		.symbol_rate_max = 11700000
3995 	},
3996 	.init = cxd2841er_init_tc,
3997 	.sleep = cxd2841er_shutdown_tc,
3998 	.release = cxd2841er_release,
3999 	.set_frontend = cxd2841er_set_frontend_tc,
4000 	.get_frontend = cxd2841er_get_frontend,
4001 	.read_status = cxd2841er_read_status_tc,
4002 	.tune = cxd2841er_tune_tc,
4003 	.i2c_gate_ctrl = cxd2841er_i2c_gate_ctrl,
4004 	.get_frontend_algo = cxd2841er_get_algo
4005 };
4006 
4007 MODULE_DESCRIPTION("Sony CXD2837/38/41/43/54ER DVB-C/C2/T/T2/S/S2 demodulator driver");
4008 MODULE_AUTHOR("Sergey Kozlov <serjk@netup.ru>, Abylay Ospan <aospan@netup.ru>");
4009 MODULE_LICENSE("GPL");
4010