1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * helene.c
4  *
5  * Sony HELENE DVB-S/S2 DVB-T/T2 DVB-C/C2 ISDB-T/S tuner driver (CXD2858ER)
6  *
7  * Copyright 2012 Sony Corporation
8  * Copyright (C) 2014 NetUP Inc.
9  * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
10   */
11 
12 #include <linux/slab.h>
13 #include <linux/module.h>
14 #include <linux/dvb/frontend.h>
15 #include <linux/types.h>
16 #include "helene.h"
17 #include <media/dvb_frontend.h>
18 
19 #define MAX_WRITE_REGSIZE 20
20 
21 enum helene_state {
22 	STATE_UNKNOWN,
23 	STATE_SLEEP,
24 	STATE_ACTIVE
25 };
26 
27 struct helene_priv {
28 	u32			frequency;
29 	u8			i2c_address;
30 	struct i2c_adapter	*i2c;
31 	enum helene_state	state;
32 	void			*set_tuner_data;
33 	int			(*set_tuner)(void *, int);
34 	enum helene_xtal xtal;
35 };
36 
37 #define TERR_INTERNAL_LOOPFILTER_AVAILABLE(tv_system) \
38 	(((tv_system) != SONY_HELENE_DTV_DVBC_6) && \
39 	 ((tv_system) != SONY_HELENE_DTV_DVBC_8)\
40 	 && ((tv_system) != SONY_HELENE_DTV_DVBC2_6) && \
41 	 ((tv_system) != SONY_HELENE_DTV_DVBC2_8))
42 
43 #define HELENE_AUTO		0xff
44 #define HELENE_OFFSET(ofs)	((u8)(ofs) & 0x1F)
45 #define HELENE_BW_6		0x00
46 #define HELENE_BW_7		0x01
47 #define HELENE_BW_8		0x02
48 #define HELENE_BW_1_7		0x03
49 
50 enum helene_tv_system_t {
51 	SONY_HELENE_TV_SYSTEM_UNKNOWN,
52 	/* Terrestrial Analog */
53 	SONY_HELENE_ATV_MN_EIAJ,
54 	/**< System-M (Japan) (IF: Fp=5.75MHz in default) */
55 	SONY_HELENE_ATV_MN_SAP,
56 	/**< System-M (US)    (IF: Fp=5.75MHz in default) */
57 	SONY_HELENE_ATV_MN_A2,
58 	/**< System-M (Korea) (IF: Fp=5.9MHz in default) */
59 	SONY_HELENE_ATV_BG,
60 	/**< System-B/G       (IF: Fp=7.3MHz in default) */
61 	SONY_HELENE_ATV_I,
62 	/**< System-I         (IF: Fp=7.85MHz in default) */
63 	SONY_HELENE_ATV_DK,
64 	/**< System-D/K       (IF: Fp=7.85MHz in default) */
65 	SONY_HELENE_ATV_L,
66 	/**< System-L         (IF: Fp=7.85MHz in default) */
67 	SONY_HELENE_ATV_L_DASH,
68 	/**< System-L DASH    (IF: Fp=2.2MHz in default) */
69 	/* Terrestrial/Cable Digital */
70 	SONY_HELENE_DTV_8VSB,
71 	/**< ATSC 8VSB        (IF: Fc=3.7MHz in default) */
72 	SONY_HELENE_DTV_QAM,
73 	/**< US QAM           (IF: Fc=3.7MHz in default) */
74 	SONY_HELENE_DTV_ISDBT_6,
75 	/**< ISDB-T 6MHzBW    (IF: Fc=3.55MHz in default) */
76 	SONY_HELENE_DTV_ISDBT_7,
77 	/**< ISDB-T 7MHzBW    (IF: Fc=4.15MHz in default) */
78 	SONY_HELENE_DTV_ISDBT_8,
79 	/**< ISDB-T 8MHzBW    (IF: Fc=4.75MHz in default) */
80 	SONY_HELENE_DTV_DVBT_5,
81 	/**< DVB-T 5MHzBW     (IF: Fc=3.6MHz in default) */
82 	SONY_HELENE_DTV_DVBT_6,
83 	/**< DVB-T 6MHzBW     (IF: Fc=3.6MHz in default) */
84 	SONY_HELENE_DTV_DVBT_7,
85 	/**< DVB-T 7MHzBW     (IF: Fc=4.2MHz in default) */
86 	SONY_HELENE_DTV_DVBT_8,
87 	/**< DVB-T 8MHzBW     (IF: Fc=4.8MHz in default) */
88 	SONY_HELENE_DTV_DVBT2_1_7,
89 	/**< DVB-T2 1.7MHzBW  (IF: Fc=3.5MHz in default) */
90 	SONY_HELENE_DTV_DVBT2_5,
91 	/**< DVB-T2 5MHzBW    (IF: Fc=3.6MHz in default) */
92 	SONY_HELENE_DTV_DVBT2_6,
93 	/**< DVB-T2 6MHzBW    (IF: Fc=3.6MHz in default) */
94 	SONY_HELENE_DTV_DVBT2_7,
95 	/**< DVB-T2 7MHzBW    (IF: Fc=4.2MHz in default) */
96 	SONY_HELENE_DTV_DVBT2_8,
97 	/**< DVB-T2 8MHzBW    (IF: Fc=4.8MHz in default) */
98 	SONY_HELENE_DTV_DVBC_6,
99 	/**< DVB-C 6MHzBW     (IF: Fc=3.7MHz in default) */
100 	SONY_HELENE_DTV_DVBC_8,
101 	/**< DVB-C 8MHzBW     (IF: Fc=4.9MHz in default) */
102 	SONY_HELENE_DTV_DVBC2_6,
103 	/**< DVB-C2 6MHzBW    (IF: Fc=3.7MHz in default) */
104 	SONY_HELENE_DTV_DVBC2_8,
105 	/**< DVB-C2 8MHzBW    (IF: Fc=4.9MHz in default) */
106 	SONY_HELENE_DTV_DTMB,
107 	/**< DTMB             (IF: Fc=5.1MHz in default) */
108 	/* Satellite */
109 	SONY_HELENE_STV_ISDBS,
110 	/**< ISDB-S */
111 	SONY_HELENE_STV_DVBS,
112 	/**< DVB-S */
113 	SONY_HELENE_STV_DVBS2,
114 	/**< DVB-S2 */
115 
116 	SONY_HELENE_ATV_MIN = SONY_HELENE_ATV_MN_EIAJ,
117 	/**< Minimum analog terrestrial system */
118 	SONY_HELENE_ATV_MAX = SONY_HELENE_ATV_L_DASH,
119 	/**< Maximum analog terrestrial system */
120 	SONY_HELENE_DTV_MIN = SONY_HELENE_DTV_8VSB,
121 	/**< Minimum digital terrestrial system */
122 	SONY_HELENE_DTV_MAX = SONY_HELENE_DTV_DTMB,
123 	/**< Maximum digital terrestrial system */
124 	SONY_HELENE_TERR_TV_SYSTEM_NUM,
125 	/**< Number of supported terrestrial broadcasting system */
126 	SONY_HELENE_STV_MIN = SONY_HELENE_STV_ISDBS,
127 	/**< Minimum satellite system */
128 	SONY_HELENE_STV_MAX = SONY_HELENE_STV_DVBS2
129 	/**< Maximum satellite system */
130 };
131 
132 struct helene_terr_adjust_param_t {
133 	/* < Addr:0x69 Bit[6:4] : RFVGA gain.
134 	 * 0xFF means Auto. (RF_GAIN_SEL = 1)
135 	 */
136 	uint8_t RF_GAIN;
137 	/* < Addr:0x69 Bit[3:0] : IF_BPF gain.
138 	*/
139 	uint8_t IF_BPF_GC;
140 	/* < Addr:0x6B Bit[3:0] : RF overload
141 	 * RF input detect level. (FRF <= 172MHz)
142 	*/
143 	uint8_t RFOVLD_DET_LV1_VL;
144 	/* < Addr:0x6B Bit[3:0] : RF overload
145 	 * RF input detect level. (172MHz < FRF <= 464MHz)
146 	*/
147 	uint8_t RFOVLD_DET_LV1_VH;
148 	/* < Addr:0x6B Bit[3:0] : RF overload
149 	 * RF input detect level. (FRF > 464MHz)
150 	*/
151 	uint8_t RFOVLD_DET_LV1_U;
152 	/* < Addr:0x6C Bit[2:0] :
153 	 * Internal RFAGC detect level. (FRF <= 172MHz)
154 	*/
155 	uint8_t IFOVLD_DET_LV_VL;
156 	/* < Addr:0x6C Bit[2:0] :
157 	 * Internal RFAGC detect level. (172MHz < FRF <= 464MHz)
158 	*/
159 	uint8_t IFOVLD_DET_LV_VH;
160 	/* < Addr:0x6C Bit[2:0] :
161 	 * Internal RFAGC detect level. (FRF > 464MHz)
162 	*/
163 	uint8_t IFOVLD_DET_LV_U;
164 	/* < Addr:0x6D Bit[5:4] :
165 	 * IF filter center offset.
166 	*/
167 	uint8_t IF_BPF_F0;
168 	/* < Addr:0x6D Bit[1:0] :
169 	 * 6MHzBW(0x00) or 7MHzBW(0x01)
170 	 * or 8MHzBW(0x02) or 1.7MHzBW(0x03)
171 	*/
172 	uint8_t BW;
173 	/* < Addr:0x6E Bit[4:0] :
174 	 * 5bit signed. IF offset (kHz) = FIF_OFFSET x 50
175 	*/
176 	uint8_t FIF_OFFSET;
177 	/* < Addr:0x6F Bit[4:0] :
178 	 * 5bit signed. BW offset (kHz) =
179 	 * BW_OFFSET x 50 (BW_OFFSET x 10 in 1.7MHzBW)
180 	*/
181 	uint8_t BW_OFFSET;
182 	/* < Addr:0x9C Bit[0]   :
183 	 * Local polarity. (0: Upper Local, 1: Lower Local)
184 	*/
185 	uint8_t IS_LOWERLOCAL;
186 };
187 
188 static const struct helene_terr_adjust_param_t
189 terr_params[SONY_HELENE_TERR_TV_SYSTEM_NUM] = {
190 	/*< SONY_HELENE_TV_SYSTEM_UNKNOWN */
191 	{HELENE_AUTO, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
192 		HELENE_BW_6, HELENE_OFFSET(0),  HELENE_OFFSET(0),  0x00},
193 	/* Analog */
194 	/**< SONY_HELENE_ATV_MN_EIAJ   (System-M (Japan)) */
195 	{HELENE_AUTO, 0x05, 0x03, 0x06, 0x03, 0x01, 0x01, 0x01, 0x00,
196 		HELENE_BW_6,  HELENE_OFFSET(0),  HELENE_OFFSET(1),  0x00},
197 	/**< SONY_HELENE_ATV_MN_SAP    (System-M (US)) */
198 	{HELENE_AUTO, 0x05, 0x03, 0x06, 0x03, 0x01, 0x01, 0x01, 0x00,
199 		HELENE_BW_6,  HELENE_OFFSET(0),  HELENE_OFFSET(1),  0x00},
200 	{HELENE_AUTO, 0x05, 0x03, 0x06, 0x03, 0x01, 0x01, 0x01, 0x00,
201 		HELENE_BW_6,  HELENE_OFFSET(3),  HELENE_OFFSET(1),  0x00},
202 	/**< SONY_HELENE_ATV_MN_A2     (System-M (Korea)) */
203 	{HELENE_AUTO, 0x05, 0x03, 0x06, 0x03, 0x01, 0x01, 0x01, 0x00,
204 		HELENE_BW_7,  HELENE_OFFSET(11), HELENE_OFFSET(5),  0x00},
205 	/**< SONY_HELENE_ATV_BG        (System-B/G) */
206 	{HELENE_AUTO, 0x05, 0x03, 0x06, 0x03, 0x01, 0x01, 0x01, 0x00,
207 		HELENE_BW_8,  HELENE_OFFSET(2),  HELENE_OFFSET(-3), 0x00},
208 	/**< SONY_HELENE_ATV_I         (System-I) */
209 	{HELENE_AUTO, 0x05, 0x03, 0x06, 0x03, 0x01, 0x01, 0x01, 0x00,
210 		HELENE_BW_8,  HELENE_OFFSET(2),  HELENE_OFFSET(-3), 0x00},
211 	/**< SONY_HELENE_ATV_DK        (System-D/K) */
212 	{HELENE_AUTO, 0x03, 0x04, 0x0A, 0x04, 0x04, 0x04, 0x04, 0x00,
213 		HELENE_BW_8,  HELENE_OFFSET(2),  HELENE_OFFSET(-3), 0x00},
214 	/**< SONY_HELENE_ATV_L         (System-L) */
215 	{HELENE_AUTO, 0x03, 0x04, 0x0A, 0x04, 0x04, 0x04, 0x04, 0x00,
216 		HELENE_BW_8,  HELENE_OFFSET(-1), HELENE_OFFSET(4),  0x00},
217 	/**< SONY_HELENE_ATV_L_DASH    (System-L DASH) */
218 	/* Digital */
219 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x03, 0x03, 0x03, 0x00,
220 		HELENE_BW_6,  HELENE_OFFSET(-6), HELENE_OFFSET(-3), 0x00},
221 	/**< SONY_HELENE_DTV_8VSB      (ATSC 8VSB) */
222 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
223 		HELENE_BW_6,  HELENE_OFFSET(-6), HELENE_OFFSET(-3), 0x00},
224 	/**< SONY_HELENE_DTV_QAM       (US QAM) */
225 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
226 		HELENE_BW_6,  HELENE_OFFSET(-9), HELENE_OFFSET(-5), 0x00},
227 	/**< SONY_HELENE_DTV_ISDBT_6   (ISDB-T 6MHzBW) */
228 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
229 		HELENE_BW_7,  HELENE_OFFSET(-7), HELENE_OFFSET(-6), 0x00},
230 	/**< SONY_HELENE_DTV_ISDBT_7   (ISDB-T 7MHzBW) */
231 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
232 		HELENE_BW_8,  HELENE_OFFSET(-5), HELENE_OFFSET(-7), 0x00},
233 	/**< SONY_HELENE_DTV_ISDBT_8   (ISDB-T 8MHzBW) */
234 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
235 		HELENE_BW_6,  HELENE_OFFSET(-8), HELENE_OFFSET(-3), 0x00},
236 	/**< SONY_HELENE_DTV_DVBT_5    (DVB-T 5MHzBW) */
237 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
238 		HELENE_BW_6,  HELENE_OFFSET(-8), HELENE_OFFSET(-3), 0x00},
239 	/**< SONY_HELENE_DTV_DVBT_6    (DVB-T 6MHzBW) */
240 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
241 		HELENE_BW_7,  HELENE_OFFSET(-6), HELENE_OFFSET(-5), 0x00},
242 	/**< SONY_HELENE_DTV_DVBT_7    (DVB-T 7MHzBW) */
243 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
244 		HELENE_BW_8,  HELENE_OFFSET(-4), HELENE_OFFSET(-6), 0x00},
245 	/**< SONY_HELENE_DTV_DVBT_8    (DVB-T 8MHzBW) */
246 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
247 		HELENE_BW_1_7, HELENE_OFFSET(-10), HELENE_OFFSET(-10), 0x00},
248 	/**< SONY_HELENE_DTV_DVBT2_1_7 (DVB-T2 1.7MHzBW) */
249 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
250 		HELENE_BW_6,  HELENE_OFFSET(-8), HELENE_OFFSET(-3), 0x00},
251 	/**< SONY_HELENE_DTV_DVBT2_5   (DVB-T2 5MHzBW) */
252 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
253 		HELENE_BW_6,  HELENE_OFFSET(-8), HELENE_OFFSET(-3), 0x00},
254 	/**< SONY_HELENE_DTV_DVBT2_6   (DVB-T2 6MHzBW) */
255 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
256 		HELENE_BW_7,  HELENE_OFFSET(-6), HELENE_OFFSET(-5), 0x00},
257 	/**< SONY_HELENE_DTV_DVBT2_7   (DVB-T2 7MHzBW) */
258 	{HELENE_AUTO, 0x09, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
259 		HELENE_BW_8,  HELENE_OFFSET(-4), HELENE_OFFSET(-6), 0x00},
260 	/**< SONY_HELENE_DTV_DVBT2_8   (DVB-T2 8MHzBW) */
261 	{HELENE_AUTO, 0x05, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x00,
262 		HELENE_BW_6,  HELENE_OFFSET(-6), HELENE_OFFSET(-4), 0x00},
263 	/**< SONY_HELENE_DTV_DVBC_6    (DVB-C 6MHzBW) */
264 	{HELENE_AUTO, 0x05, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x00,
265 		HELENE_BW_8,  HELENE_OFFSET(-2), HELENE_OFFSET(-3), 0x00},
266 	/**< SONY_HELENE_DTV_DVBC_8    (DVB-C 8MHzBW) */
267 	{HELENE_AUTO, 0x03, 0x09, 0x09, 0x09, 0x02, 0x02, 0x02, 0x00,
268 		HELENE_BW_6,  HELENE_OFFSET(-6), HELENE_OFFSET(-2), 0x00},
269 	/**< SONY_HELENE_DTV_DVBC2_6   (DVB-C2 6MHzBW) */
270 	{HELENE_AUTO, 0x03, 0x09, 0x09, 0x09, 0x02, 0x02, 0x02, 0x00,
271 		HELENE_BW_8,  HELENE_OFFSET(-2), HELENE_OFFSET(0),  0x00},
272 	/**< SONY_HELENE_DTV_DVBC2_8   (DVB-C2 8MHzBW) */
273 	{HELENE_AUTO, 0x04, 0x0B, 0x0B, 0x0B, 0x02, 0x02, 0x02, 0x00,
274 		HELENE_BW_8,  HELENE_OFFSET(2),  HELENE_OFFSET(1),  0x00}
275 	/**< SONY_HELENE_DTV_DTMB      (DTMB) */
276 };
277 
278 static void helene_i2c_debug(struct helene_priv *priv,
279 		u8 reg, u8 write, const u8 *data, u32 len)
280 {
281 	dev_dbg(&priv->i2c->dev, "helene: I2C %s reg 0x%02x size %d\n",
282 			(write == 0 ? "read" : "write"), reg, len);
283 	print_hex_dump_bytes("helene: I2C data: ",
284 			DUMP_PREFIX_OFFSET, data, len);
285 }
286 
287 static int helene_write_regs(struct helene_priv *priv,
288 		u8 reg, const u8 *data, u32 len)
289 {
290 	int ret;
291 	u8 buf[MAX_WRITE_REGSIZE + 1];
292 	struct i2c_msg msg[1] = {
293 		{
294 			.addr = priv->i2c_address,
295 			.flags = 0,
296 			.len = len + 1,
297 			.buf = buf,
298 		}
299 	};
300 
301 	if (len + 1 > sizeof(buf)) {
302 		dev_warn(&priv->i2c->dev,
303 				"wr reg=%04x: len=%d vs %zu is too big!\n",
304 				reg, len + 1, sizeof(buf));
305 		return -E2BIG;
306 	}
307 
308 	helene_i2c_debug(priv, reg, 1, data, len);
309 	buf[0] = reg;
310 	memcpy(&buf[1], data, len);
311 	ret = i2c_transfer(priv->i2c, msg, 1);
312 	if (ret >= 0 && ret != 1)
313 		ret = -EREMOTEIO;
314 	if (ret < 0) {
315 		dev_warn(&priv->i2c->dev,
316 				"%s: i2c wr failed=%d reg=%02x len=%d\n",
317 				KBUILD_MODNAME, ret, reg, len);
318 		return ret;
319 	}
320 	return 0;
321 }
322 
323 static int helene_write_reg(struct helene_priv *priv, u8 reg, u8 val)
324 {
325 	u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
326 
327 	return helene_write_regs(priv, reg, &tmp, 1);
328 }
329 
330 static int helene_read_regs(struct helene_priv *priv,
331 		u8 reg, u8 *val, u32 len)
332 {
333 	int ret;
334 	struct i2c_msg msg[2] = {
335 		{
336 			.addr = priv->i2c_address,
337 			.flags = 0,
338 			.len = 1,
339 			.buf = &reg,
340 		}, {
341 			.addr = priv->i2c_address,
342 			.flags = I2C_M_RD,
343 			.len = len,
344 			.buf = val,
345 		}
346 	};
347 
348 	ret = i2c_transfer(priv->i2c, &msg[0], 1);
349 	if (ret >= 0 && ret != 1)
350 		ret = -EREMOTEIO;
351 	if (ret < 0) {
352 		dev_warn(&priv->i2c->dev,
353 				"%s: I2C rw failed=%d addr=%02x reg=%02x\n",
354 				KBUILD_MODNAME, ret, priv->i2c_address, reg);
355 		return ret;
356 	}
357 	ret = i2c_transfer(priv->i2c, &msg[1], 1);
358 	if (ret >= 0 && ret != 1)
359 		ret = -EREMOTEIO;
360 	if (ret < 0) {
361 		dev_warn(&priv->i2c->dev,
362 				"%s: i2c rd failed=%d addr=%02x reg=%02x\n",
363 				KBUILD_MODNAME, ret, priv->i2c_address, reg);
364 		return ret;
365 	}
366 	helene_i2c_debug(priv, reg, 0, val, len);
367 	return 0;
368 }
369 
370 static int helene_read_reg(struct helene_priv *priv, u8 reg, u8 *val)
371 {
372 	return helene_read_regs(priv, reg, val, 1);
373 }
374 
375 static int helene_set_reg_bits(struct helene_priv *priv,
376 		u8 reg, u8 data, u8 mask)
377 {
378 	int res;
379 	u8 rdata;
380 
381 	if (mask != 0xff) {
382 		res = helene_read_reg(priv, reg, &rdata);
383 		if (res != 0)
384 			return res;
385 		data = ((data & mask) | (rdata & (mask ^ 0xFF)));
386 	}
387 	return helene_write_reg(priv, reg, data);
388 }
389 
390 static int helene_enter_power_save(struct helene_priv *priv)
391 {
392 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
393 	if (priv->state == STATE_SLEEP)
394 		return 0;
395 
396 	/* Standby setting for CPU */
397 	helene_write_reg(priv, 0x88, 0x0);
398 
399 	/* Standby setting for internal logic block */
400 	helene_write_reg(priv, 0x87, 0xC0);
401 
402 	priv->state = STATE_SLEEP;
403 	return 0;
404 }
405 
406 static int helene_leave_power_save(struct helene_priv *priv)
407 {
408 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
409 	if (priv->state == STATE_ACTIVE)
410 		return 0;
411 
412 	/* Standby setting for internal logic block */
413 	helene_write_reg(priv, 0x87, 0xC4);
414 
415 	/* Standby setting for CPU */
416 	helene_write_reg(priv, 0x88, 0x40);
417 
418 	priv->state = STATE_ACTIVE;
419 	return 0;
420 }
421 
422 static int helene_init(struct dvb_frontend *fe)
423 {
424 	struct helene_priv *priv = fe->tuner_priv;
425 
426 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
427 	return helene_leave_power_save(priv);
428 }
429 
430 static void helene_release(struct dvb_frontend *fe)
431 {
432 	struct helene_priv *priv = fe->tuner_priv;
433 
434 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
435 	kfree(fe->tuner_priv);
436 	fe->tuner_priv = NULL;
437 }
438 
439 static int helene_sleep(struct dvb_frontend *fe)
440 {
441 	struct helene_priv *priv = fe->tuner_priv;
442 
443 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
444 	helene_enter_power_save(priv);
445 	return 0;
446 }
447 
448 static enum helene_tv_system_t helene_get_tv_system(struct dvb_frontend *fe)
449 {
450 	enum helene_tv_system_t system = SONY_HELENE_TV_SYSTEM_UNKNOWN;
451 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
452 	struct helene_priv *priv = fe->tuner_priv;
453 
454 	if (p->delivery_system == SYS_DVBT) {
455 		if (p->bandwidth_hz <= 5000000)
456 			system = SONY_HELENE_DTV_DVBT_5;
457 		else if (p->bandwidth_hz <= 6000000)
458 			system = SONY_HELENE_DTV_DVBT_6;
459 		else if (p->bandwidth_hz <= 7000000)
460 			system = SONY_HELENE_DTV_DVBT_7;
461 		else if (p->bandwidth_hz <= 8000000)
462 			system = SONY_HELENE_DTV_DVBT_8;
463 		else {
464 			system = SONY_HELENE_DTV_DVBT_8;
465 			p->bandwidth_hz = 8000000;
466 		}
467 	} else if (p->delivery_system == SYS_DVBT2) {
468 		if (p->bandwidth_hz <= 5000000)
469 			system = SONY_HELENE_DTV_DVBT2_5;
470 		else if (p->bandwidth_hz <= 6000000)
471 			system = SONY_HELENE_DTV_DVBT2_6;
472 		else if (p->bandwidth_hz <= 7000000)
473 			system = SONY_HELENE_DTV_DVBT2_7;
474 		else if (p->bandwidth_hz <= 8000000)
475 			system = SONY_HELENE_DTV_DVBT2_8;
476 		else {
477 			system = SONY_HELENE_DTV_DVBT2_8;
478 			p->bandwidth_hz = 8000000;
479 		}
480 	} else if (p->delivery_system == SYS_DVBS) {
481 		system = SONY_HELENE_STV_DVBS;
482 	} else if (p->delivery_system == SYS_DVBS2) {
483 		system = SONY_HELENE_STV_DVBS2;
484 	} else if (p->delivery_system == SYS_ISDBS) {
485 		system = SONY_HELENE_STV_ISDBS;
486 	} else if (p->delivery_system == SYS_ISDBT) {
487 		if (p->bandwidth_hz <= 6000000)
488 			system = SONY_HELENE_DTV_ISDBT_6;
489 		else if (p->bandwidth_hz <= 7000000)
490 			system = SONY_HELENE_DTV_ISDBT_7;
491 		else if (p->bandwidth_hz <= 8000000)
492 			system = SONY_HELENE_DTV_ISDBT_8;
493 		else {
494 			system = SONY_HELENE_DTV_ISDBT_8;
495 			p->bandwidth_hz = 8000000;
496 		}
497 	} else if (p->delivery_system == SYS_DVBC_ANNEX_A) {
498 		if (p->bandwidth_hz <= 6000000)
499 			system = SONY_HELENE_DTV_DVBC_6;
500 		else if (p->bandwidth_hz <= 8000000)
501 			system = SONY_HELENE_DTV_DVBC_8;
502 	}
503 	dev_dbg(&priv->i2c->dev,
504 			"%s(): HELENE DTV system %d (delsys %d, bandwidth %d)\n",
505 			__func__, (int)system, p->delivery_system,
506 			p->bandwidth_hz);
507 	return system;
508 }
509 
510 static int helene_set_params_s(struct dvb_frontend *fe)
511 {
512 	u8 data[MAX_WRITE_REGSIZE];
513 	u32 frequency;
514 	enum helene_tv_system_t tv_system;
515 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
516 	struct helene_priv *priv = fe->tuner_priv;
517 	int frequencykHz = p->frequency;
518 	uint32_t frequency4kHz = 0;
519 	u32 symbol_rate = p->symbol_rate/1000;
520 
521 	dev_dbg(&priv->i2c->dev, "%s(): tune frequency %dkHz sr=%uKsps\n",
522 			__func__, frequencykHz, symbol_rate);
523 	tv_system = helene_get_tv_system(fe);
524 
525 	if (tv_system == SONY_HELENE_TV_SYSTEM_UNKNOWN) {
526 		dev_err(&priv->i2c->dev, "%s(): unknown DTV system\n",
527 				__func__);
528 		return -EINVAL;
529 	}
530 	/* RF switch turn to satellite */
531 	if (priv->set_tuner)
532 		priv->set_tuner(priv->set_tuner_data, 0);
533 	frequency = roundup(p->frequency / 1000, 1);
534 
535 	/* Disable IF signal output */
536 	helene_write_reg(priv, 0x15, 0x02);
537 
538 	/* RFIN matching in power save (Sat) reset */
539 	helene_write_reg(priv, 0x43, 0x06);
540 
541 	/* Analog block setting (0x6A, 0x6B) */
542 	data[0] = 0x00;
543 	data[1] = 0x00;
544 	helene_write_regs(priv, 0x6A, data, 2);
545 	helene_write_reg(priv, 0x75, 0x99);
546 	helene_write_reg(priv, 0x9D, 0x00);
547 
548 	/* Tuning setting for CPU (0x61) */
549 	helene_write_reg(priv, 0x61, 0x07);
550 
551 	/* Satellite mode select (0x01) */
552 	helene_write_reg(priv, 0x01, 0x01);
553 
554 	/* Clock enable for internal logic block, CPU wake-up (0x04, 0x05) */
555 	data[0] = 0xC4;
556 	data[1] = 0x40;
557 
558 	switch (priv->xtal) {
559 	case SONY_HELENE_XTAL_16000:
560 		data[2] = 0x02;
561 		break;
562 	case SONY_HELENE_XTAL_20500:
563 		data[2] = 0x02;
564 		break;
565 	case SONY_HELENE_XTAL_24000:
566 		data[2] = 0x03;
567 		break;
568 	case SONY_HELENE_XTAL_41000:
569 		data[2] = 0x05;
570 		break;
571 	default:
572 		dev_err(&priv->i2c->dev, "%s(): unknown xtal %d\n",
573 				__func__, priv->xtal);
574 		return -EINVAL;
575 	}
576 
577 	/* Setting for analog block (0x07). LOOPFILTER INTERNAL */
578 	data[3] = 0x80;
579 
580 	/* Tuning setting for analog block
581 	 * (0x08, 0x09, 0x0A, 0x0B). LOOPFILTER INTERNAL
582 	*/
583 	if (priv->xtal == SONY_HELENE_XTAL_20500)
584 		data[4] = 0x58;
585 	else
586 		data[4] = 0x70;
587 
588 	data[5] = 0x1E;
589 	data[6] = 0x02;
590 	data[7] = 0x24;
591 
592 	/* Enable for analog block (0x0C, 0x0D, 0x0E). SAT LNA ON */
593 	data[8] = 0x0F;
594 	data[8] |= 0xE0; /* POWERSAVE_TERR_RF_ACTIVE */
595 	data[9]  = 0x02;
596 	data[10] = 0x1E;
597 
598 	/* Setting for LPF cutoff frequency (0x0F) */
599 	switch (tv_system) {
600 	case SONY_HELENE_STV_ISDBS:
601 		data[11] = 0x22; /* 22MHz */
602 		break;
603 	case SONY_HELENE_STV_DVBS:
604 		if (symbol_rate <= 4000)
605 			data[11] = 0x05;
606 		else if (symbol_rate <= 10000)
607 			data[11] = (uint8_t)((symbol_rate * 47
608 						+ (40000-1)) / 40000);
609 		else
610 			data[11] = (uint8_t)((symbol_rate * 27
611 						+ (40000-1)) / 40000 + 5);
612 
613 		if (data[11] > 36)
614 			data[11] = 36; /* 5 <= lpf_cutoff <= 36 is valid */
615 		break;
616 	case SONY_HELENE_STV_DVBS2:
617 		if (symbol_rate <= 4000)
618 			data[11] = 0x05;
619 		else if (symbol_rate <= 10000)
620 			data[11] = (uint8_t)((symbol_rate * 11
621 						+ (10000-1)) / 10000);
622 		else
623 			data[11] = (uint8_t)((symbol_rate * 3
624 						+ (5000-1)) / 5000 + 5);
625 
626 		if (data[11] > 36)
627 			data[11] = 36; /* 5 <= lpf_cutoff <= 36 is valid */
628 		break;
629 	default:
630 		dev_err(&priv->i2c->dev, "%s(): unknown standard %d\n",
631 				__func__, tv_system);
632 		return -EINVAL;
633 	}
634 
635 	/* RF tuning frequency setting (0x10, 0x11, 0x12) */
636 	frequency4kHz = (frequencykHz + 2) / 4;
637 	data[12] = (uint8_t)(frequency4kHz & 0xFF);         /* FRF_L */
638 	data[13] = (uint8_t)((frequency4kHz >> 8) & 0xFF);  /* FRF_M */
639 	/* FRF_H (bit[3:0]) */
640 	data[14] = (uint8_t)((frequency4kHz >> 16) & 0x0F);
641 
642 	/* Tuning command (0x13) */
643 	data[15] = 0xFF;
644 
645 	/* Setting for IQOUT_LIMIT (0x14) 0.75Vpp */
646 	data[16] = 0x00;
647 
648 	/* Enable IQ output (0x15) */
649 	data[17] = 0x01;
650 
651 	helene_write_regs(priv, 0x04, data, 18);
652 
653 	dev_dbg(&priv->i2c->dev, "%s(): tune done\n",
654 			__func__);
655 
656 	priv->frequency = frequency;
657 	return 0;
658 }
659 
660 static int helene_set_params_t(struct dvb_frontend *fe)
661 {
662 	u8 data[MAX_WRITE_REGSIZE];
663 	u32 frequency;
664 	enum helene_tv_system_t tv_system;
665 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
666 	struct helene_priv *priv = fe->tuner_priv;
667 	int frequencykHz = p->frequency / 1000;
668 
669 	dev_dbg(&priv->i2c->dev, "%s(): tune frequency %dkHz\n",
670 			__func__, frequencykHz);
671 	tv_system = helene_get_tv_system(fe);
672 
673 	if (tv_system == SONY_HELENE_TV_SYSTEM_UNKNOWN) {
674 		dev_dbg(&priv->i2c->dev, "%s(): unknown DTV system\n",
675 				__func__);
676 		return -EINVAL;
677 	}
678 	if (priv->set_tuner)
679 		priv->set_tuner(priv->set_tuner_data, 1);
680 	frequency = roundup(p->frequency / 1000, 25);
681 
682 	/* mode select */
683 	helene_write_reg(priv, 0x01, 0x00);
684 
685 	/* Disable IF signal output */
686 	helene_write_reg(priv, 0x74, 0x02);
687 
688 	if (priv->state == STATE_SLEEP)
689 		helene_leave_power_save(priv);
690 
691 	/* Initial setting for internal analog block (0x91, 0x92) */
692 	if ((tv_system == SONY_HELENE_DTV_DVBC_6) ||
693 			(tv_system == SONY_HELENE_DTV_DVBC_8)) {
694 		data[0] = 0x16;
695 		data[1] = 0x26;
696 	} else {
697 		data[0] = 0x10;
698 		data[1] = 0x20;
699 	}
700 	helene_write_regs(priv, 0x91, data, 2);
701 
702 	/* Setting for analog block */
703 	if (TERR_INTERNAL_LOOPFILTER_AVAILABLE(tv_system))
704 		data[0] = 0x90;
705 	else
706 		data[0] = 0x00;
707 
708 	/* Setting for local polarity (0x9D) */
709 	data[1] = (uint8_t)(terr_params[tv_system].IS_LOWERLOCAL & 0x01);
710 	helene_write_regs(priv, 0x9C, data, 2);
711 
712 	/* Enable for analog block */
713 	data[0] = 0xEE;
714 	data[1] = 0x02;
715 	data[2] = 0x1E;
716 	data[3] = 0x67; /* Tuning setting for CPU */
717 
718 	/* Setting for PLL reference divider for xtal=24MHz */
719 	if ((tv_system == SONY_HELENE_DTV_DVBC_6) ||
720 			(tv_system == SONY_HELENE_DTV_DVBC_8))
721 		data[4] = 0x18;
722 	else
723 		data[4] = 0x03;
724 
725 	/* Tuning setting for analog block */
726 	if (TERR_INTERNAL_LOOPFILTER_AVAILABLE(tv_system)) {
727 		data[5] = 0x38;
728 		data[6] = 0x1E;
729 		data[7] = 0x02;
730 		data[8] = 0x24;
731 	} else if ((tv_system == SONY_HELENE_DTV_DVBC_6) ||
732 			(tv_system == SONY_HELENE_DTV_DVBC_8)) {
733 		data[5] = 0x1C;
734 		data[6] = 0x78;
735 		data[7] = 0x08;
736 		data[8] = 0x1C;
737 	} else {
738 		data[5] = 0xB4;
739 		data[6] = 0x78;
740 		data[7] = 0x08;
741 		data[8] = 0x30;
742 	}
743 	helene_write_regs(priv, 0x5E, data, 9);
744 
745 	/* LT_AMP_EN should be 0 */
746 	helene_set_reg_bits(priv, 0x67, 0x0, 0x02);
747 
748 	/* Setting for IFOUT_LIMIT */
749 	data[0] = 0x00; /* 1.5Vpp */
750 
751 	/* RF_GAIN setting */
752 	if (terr_params[tv_system].RF_GAIN == HELENE_AUTO)
753 		data[1] = 0x80; /* RF_GAIN_SEL = 1 */
754 	else
755 		data[1] = (uint8_t)((terr_params[tv_system].RF_GAIN
756 					<< 4) & 0x70);
757 
758 	/* IF_BPF_GC setting */
759 	data[1] |= (uint8_t)(terr_params[tv_system].IF_BPF_GC & 0x0F);
760 
761 	/* Setting for internal RFAGC (0x6A, 0x6B, 0x6C) */
762 	data[2] = 0x00;
763 	if (frequencykHz <= 172000) {
764 		data[3] = (uint8_t)(terr_params[tv_system].RFOVLD_DET_LV1_VL
765 				& 0x0F);
766 		data[4] = (uint8_t)(terr_params[tv_system].IFOVLD_DET_LV_VL
767 				& 0x07);
768 	} else if (frequencykHz <= 464000) {
769 		data[3] = (uint8_t)(terr_params[tv_system].RFOVLD_DET_LV1_VH
770 				& 0x0F);
771 		data[4] = (uint8_t)(terr_params[tv_system].IFOVLD_DET_LV_VH
772 				& 0x07);
773 	} else {
774 		data[3] = (uint8_t)(terr_params[tv_system].RFOVLD_DET_LV1_U
775 				& 0x0F);
776 		data[4] = (uint8_t)(terr_params[tv_system].IFOVLD_DET_LV_U
777 				& 0x07);
778 	}
779 	data[4] |= 0x20;
780 
781 	/* Setting for IF frequency and bandwidth */
782 
783 	/* IF filter center frequency offset (IF_BPF_F0) (0x6D) */
784 	data[5] = (uint8_t)((terr_params[tv_system].IF_BPF_F0 << 4) & 0x30);
785 
786 	/* IF filter band width (BW) (0x6D) */
787 	data[5] |= (uint8_t)(terr_params[tv_system].BW & 0x03);
788 
789 	/* IF frequency offset value (FIF_OFFSET) (0x6E) */
790 	data[6] = (uint8_t)(terr_params[tv_system].FIF_OFFSET & 0x1F);
791 
792 	/* IF band width offset value (BW_OFFSET) (0x6F) */
793 	data[7] = (uint8_t)(terr_params[tv_system].BW_OFFSET & 0x1F);
794 
795 	/* RF tuning frequency setting (0x70, 0x71, 0x72) */
796 	data[8]  = (uint8_t)(frequencykHz & 0xFF);         /* FRF_L */
797 	data[9]  = (uint8_t)((frequencykHz >> 8) & 0xFF);  /* FRF_M */
798 	data[10] = (uint8_t)((frequencykHz >> 16)
799 			& 0x0F); /* FRF_H (bit[3:0]) */
800 
801 	/* Tuning command */
802 	data[11] = 0xFF;
803 
804 	/* Enable IF output, AGC and IFOUT pin selection (0x74) */
805 	data[12] = 0x01;
806 
807 	if ((tv_system == SONY_HELENE_DTV_DVBC_6) ||
808 			(tv_system == SONY_HELENE_DTV_DVBC_8)) {
809 		data[13] = 0xD9;
810 		data[14] = 0x0F;
811 		data[15] = 0x24;
812 		data[16] = 0x87;
813 	} else {
814 		data[13] = 0x99;
815 		data[14] = 0x00;
816 		data[15] = 0x24;
817 		data[16] = 0x87;
818 	}
819 
820 	helene_write_regs(priv, 0x68, data, 17);
821 
822 	dev_dbg(&priv->i2c->dev, "%s(): tune done\n",
823 			__func__);
824 
825 	priv->frequency = frequency;
826 	return 0;
827 }
828 
829 static int helene_set_params(struct dvb_frontend *fe)
830 {
831 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
832 
833 	if (p->delivery_system == SYS_DVBT ||
834 	    p->delivery_system == SYS_DVBT2 ||
835 	    p->delivery_system == SYS_ISDBT ||
836 	    p->delivery_system == SYS_DVBC_ANNEX_A)
837 		return helene_set_params_t(fe);
838 
839 	return helene_set_params_s(fe);
840 }
841 
842 static int helene_get_frequency(struct dvb_frontend *fe, u32 *frequency)
843 {
844 	struct helene_priv *priv = fe->tuner_priv;
845 
846 	*frequency = priv->frequency * 1000;
847 	return 0;
848 }
849 
850 static const struct dvb_tuner_ops helene_tuner_ops_t = {
851 	.info = {
852 		.name = "Sony HELENE Ter tuner",
853 		.frequency_min_hz  =    1 * MHz,
854 		.frequency_max_hz  = 1200 * MHz,
855 		.frequency_step_hz =   25 * kHz,
856 	},
857 	.init = helene_init,
858 	.release = helene_release,
859 	.sleep = helene_sleep,
860 	.set_params = helene_set_params_t,
861 	.get_frequency = helene_get_frequency,
862 };
863 
864 static const struct dvb_tuner_ops helene_tuner_ops_s = {
865 	.info = {
866 		.name = "Sony HELENE Sat tuner",
867 		.frequency_min_hz  =  500 * MHz,
868 		.frequency_max_hz  = 2500 * MHz,
869 		.frequency_step_hz =    1 * MHz,
870 	},
871 	.init = helene_init,
872 	.release = helene_release,
873 	.sleep = helene_sleep,
874 	.set_params = helene_set_params_s,
875 	.get_frequency = helene_get_frequency,
876 };
877 
878 static const struct dvb_tuner_ops helene_tuner_ops = {
879 	.info = {
880 		.name = "Sony HELENE Sat/Ter tuner",
881 		.frequency_min_hz  =    1 * MHz,
882 		.frequency_max_hz  = 2500 * MHz,
883 		.frequency_step_hz =   25 * kHz,
884 	},
885 	.init = helene_init,
886 	.release = helene_release,
887 	.sleep = helene_sleep,
888 	.set_params = helene_set_params,
889 	.get_frequency = helene_get_frequency,
890 };
891 
892 /* power-on tuner
893  * call once after reset
894  */
895 static int helene_x_pon(struct helene_priv *priv)
896 {
897 	/* RFIN matching in power save (terrestrial) = ACTIVE */
898 	/* RFIN matching in power save (satellite) = ACTIVE */
899 	u8 dataT[] = { 0x06, 0x00, 0x02, 0x00 };
900 	/* SAT_RF_ACTIVE = true, lnaOff = false, terrRfActive = true */
901 	u8 dataS[] = { 0x05, 0x06 };
902 	u8 cdata[] = {0x7A, 0x01};
903 	u8 data[20];
904 	u8 rdata[2];
905 
906 	/* mode select */
907 	helene_write_reg(priv, 0x01, 0x00);
908 
909 	helene_write_reg(priv, 0x67, dataT[3]);
910 	helene_write_reg(priv, 0x43, dataS[1]);
911 	helene_write_regs(priv, 0x5E, dataT, 3);
912 	helene_write_reg(priv, 0x0C, dataS[0]);
913 
914 	/* Initial setting for internal logic block */
915 	helene_write_regs(priv, 0x99, cdata, sizeof(cdata));
916 
917 	/* 0x81 - 0x94 */
918 	if (priv->xtal == SONY_HELENE_XTAL_16000)
919 		data[0] = 0x10; /* xtal 16 MHz */
920 	else
921 		data[0] = 0x18; /* xtal 24 MHz */
922 	data[1] = (uint8_t)(0x80 | (0x04 & 0x1F)); /* 4 x 25 = 100uA */
923 	data[2] = (uint8_t)(0x80 | (0x26 & 0x7F)); /* 38 x 0.25 = 9.5pF */
924 	data[3] = 0x80; /* REFOUT signal output 500mVpp */
925 	data[4] = 0x00; /* GPIO settings */
926 	data[5] = 0x00; /* GPIO settings */
927 	data[6] = 0xC4; /* Clock enable for internal logic block */
928 	data[7] = 0x40; /* Start CPU boot-up */
929 	data[8] = 0x10; /* For burst-write */
930 
931 	/* Setting for internal RFAGC */
932 	data[9] = 0x00;
933 	data[10] = 0x45;
934 	data[11] = 0x75;
935 
936 	data[12] = 0x07; /* Setting for analog block */
937 
938 	/* Initial setting for internal analog block */
939 	data[13] = 0x1C;
940 	data[14] = 0x3F;
941 	data[15] = 0x02;
942 	data[16] = 0x10;
943 	data[17] = 0x20;
944 	data[18] = 0x0A;
945 	data[19] = 0x00;
946 
947 	helene_write_regs(priv, 0x81, data, sizeof(data));
948 
949 	/* Setting for internal RFAGC */
950 	helene_write_reg(priv, 0x9B, 0x00);
951 
952 	msleep(20);
953 
954 	/* Check CPU_STT/CPU_ERR */
955 	helene_read_regs(priv, 0x1A, rdata, sizeof(rdata));
956 
957 	if (rdata[0] != 0x00) {
958 		dev_err(&priv->i2c->dev,
959 				"HELENE tuner CPU error 0x%x\n", rdata[0]);
960 		return -EIO;
961 	}
962 
963 	/* VCO current setting */
964 	cdata[0] = 0x90;
965 	cdata[1] = 0x06;
966 	helene_write_regs(priv, 0x17, cdata, sizeof(cdata));
967 	msleep(20);
968 	helene_read_reg(priv, 0x19, data);
969 	helene_write_reg(priv, 0x95, (uint8_t)((data[0] >> 4) & 0x0F));
970 
971 	/* Disable IF signal output */
972 	helene_write_reg(priv, 0x74, 0x02);
973 
974 	/* Standby setting for CPU */
975 	helene_write_reg(priv, 0x88, 0x00);
976 
977 	/* Standby setting for internal logic block */
978 	helene_write_reg(priv, 0x87, 0xC0);
979 
980 	/* Load capacitance control setting for crystal oscillator */
981 	helene_write_reg(priv, 0x80, 0x01);
982 
983 	/* Satellite initial setting */
984 	cdata[0] = 0x07;
985 	cdata[1] = 0x00;
986 	helene_write_regs(priv, 0x41, cdata, sizeof(cdata));
987 
988 	dev_info(&priv->i2c->dev,
989 			"HELENE tuner x_pon done\n");
990 
991 	return 0;
992 }
993 
994 struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
995 		const struct helene_config *config,
996 		struct i2c_adapter *i2c)
997 {
998 	struct helene_priv *priv = NULL;
999 
1000 	priv = kzalloc(sizeof(struct helene_priv), GFP_KERNEL);
1001 	if (priv == NULL)
1002 		return NULL;
1003 	priv->i2c_address = (config->i2c_address >> 1);
1004 	priv->i2c = i2c;
1005 	priv->set_tuner_data = config->set_tuner_priv;
1006 	priv->set_tuner = config->set_tuner_callback;
1007 	priv->xtal = config->xtal;
1008 
1009 	if (fe->ops.i2c_gate_ctrl)
1010 		fe->ops.i2c_gate_ctrl(fe, 1);
1011 
1012 	if (helene_x_pon(priv) != 0) {
1013 		kfree(priv);
1014 		return NULL;
1015 	}
1016 
1017 	if (fe->ops.i2c_gate_ctrl)
1018 		fe->ops.i2c_gate_ctrl(fe, 0);
1019 
1020 	memcpy(&fe->ops.tuner_ops, &helene_tuner_ops_s,
1021 			sizeof(struct dvb_tuner_ops));
1022 	fe->tuner_priv = priv;
1023 	dev_info(&priv->i2c->dev,
1024 			"Sony HELENE Sat attached on addr=%x at I2C adapter %p\n",
1025 			priv->i2c_address, priv->i2c);
1026 	return fe;
1027 }
1028 EXPORT_SYMBOL_GPL(helene_attach_s);
1029 
1030 struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
1031 		const struct helene_config *config,
1032 		struct i2c_adapter *i2c)
1033 {
1034 	struct helene_priv *priv = NULL;
1035 
1036 	priv = kzalloc(sizeof(struct helene_priv), GFP_KERNEL);
1037 	if (priv == NULL)
1038 		return NULL;
1039 	priv->i2c_address = (config->i2c_address >> 1);
1040 	priv->i2c = i2c;
1041 	priv->set_tuner_data = config->set_tuner_priv;
1042 	priv->set_tuner = config->set_tuner_callback;
1043 	priv->xtal = config->xtal;
1044 
1045 	if (fe->ops.i2c_gate_ctrl)
1046 		fe->ops.i2c_gate_ctrl(fe, 1);
1047 
1048 	if (helene_x_pon(priv) != 0) {
1049 		kfree(priv);
1050 		return NULL;
1051 	}
1052 
1053 	if (fe->ops.i2c_gate_ctrl)
1054 		fe->ops.i2c_gate_ctrl(fe, 0);
1055 
1056 	memcpy(&fe->ops.tuner_ops, &helene_tuner_ops_t,
1057 			sizeof(struct dvb_tuner_ops));
1058 	fe->tuner_priv = priv;
1059 	dev_info(&priv->i2c->dev,
1060 			"Sony HELENE Ter attached on addr=%x at I2C adapter %p\n",
1061 			priv->i2c_address, priv->i2c);
1062 	return fe;
1063 }
1064 EXPORT_SYMBOL_GPL(helene_attach);
1065 
1066 static int helene_probe(struct i2c_client *client)
1067 {
1068 	struct helene_config *config = client->dev.platform_data;
1069 	struct dvb_frontend *fe = config->fe;
1070 	struct device *dev = &client->dev;
1071 	struct helene_priv *priv;
1072 
1073 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1074 	if (!priv)
1075 		return -ENOMEM;
1076 
1077 	priv->i2c_address = client->addr;
1078 	priv->i2c = client->adapter;
1079 	priv->set_tuner_data = config->set_tuner_priv;
1080 	priv->set_tuner = config->set_tuner_callback;
1081 	priv->xtal = config->xtal;
1082 
1083 	if (fe->ops.i2c_gate_ctrl)
1084 		fe->ops.i2c_gate_ctrl(fe, 1);
1085 
1086 	if (helene_x_pon(priv) != 0)
1087 		return -EINVAL;
1088 
1089 	if (fe->ops.i2c_gate_ctrl)
1090 		fe->ops.i2c_gate_ctrl(fe, 0);
1091 
1092 	memcpy(&fe->ops.tuner_ops, &helene_tuner_ops,
1093 	       sizeof(struct dvb_tuner_ops));
1094 	fe->tuner_priv = priv;
1095 	i2c_set_clientdata(client, priv);
1096 
1097 	dev_info(dev, "Sony HELENE attached on addr=%x at I2C adapter %p\n",
1098 		 priv->i2c_address, priv->i2c);
1099 
1100 	return 0;
1101 }
1102 
1103 static const struct i2c_device_id helene_id[] = {
1104 	{ "helene", },
1105 	{}
1106 };
1107 MODULE_DEVICE_TABLE(i2c, helene_id);
1108 
1109 static struct i2c_driver helene_driver = {
1110 	.driver = {
1111 		.name = "helene",
1112 	},
1113 	.probe = helene_probe,
1114 	.id_table = helene_id,
1115 };
1116 module_i2c_driver(helene_driver);
1117 
1118 MODULE_DESCRIPTION("Sony HELENE Sat/Ter tuner driver");
1119 MODULE_AUTHOR("Abylay Ospan <aospan@netup.ru>");
1120 MODULE_LICENSE("GPL");
1121