xref: /openbmc/linux/drivers/media/tuners/tda827x.c (revision c942fddf)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *
4  * (c) 2005 Hartmut Hackmann
5  * (c) 2007 Michael Krufky
6  */
7 
8 #include <linux/module.h>
9 #include <linux/slab.h>
10 #include <asm/types.h>
11 #include <linux/dvb/frontend.h>
12 #include <linux/videodev2.h>
13 
14 #include "tda827x.h"
15 
16 static int debug;
17 module_param(debug, int, 0644);
18 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
19 
20 #define dprintk(args...) \
21 	do {					    \
22 		if (debug) printk(KERN_DEBUG "tda827x: " args); \
23 	} while (0)
24 
25 struct tda827x_priv {
26 	int i2c_addr;
27 	struct i2c_adapter *i2c_adap;
28 	struct tda827x_config *cfg;
29 
30 	unsigned int sgIF;
31 	unsigned char lpsel;
32 
33 	u32 frequency;
34 	u32 bandwidth;
35 };
36 
tda827x_set_std(struct dvb_frontend * fe,struct analog_parameters * params)37 static void tda827x_set_std(struct dvb_frontend *fe,
38 			    struct analog_parameters *params)
39 {
40 	struct tda827x_priv *priv = fe->tuner_priv;
41 	char *mode;
42 
43 	priv->lpsel = 0;
44 	if (params->std & V4L2_STD_MN) {
45 		priv->sgIF = 92;
46 		priv->lpsel = 1;
47 		mode = "MN";
48 	} else if (params->std & V4L2_STD_B) {
49 		priv->sgIF = 108;
50 		mode = "B";
51 	} else if (params->std & V4L2_STD_GH) {
52 		priv->sgIF = 124;
53 		mode = "GH";
54 	} else if (params->std & V4L2_STD_PAL_I) {
55 		priv->sgIF = 124;
56 		mode = "I";
57 	} else if (params->std & V4L2_STD_DK) {
58 		priv->sgIF = 124;
59 		mode = "DK";
60 	} else if (params->std & V4L2_STD_SECAM_L) {
61 		priv->sgIF = 124;
62 		mode = "L";
63 	} else if (params->std & V4L2_STD_SECAM_LC) {
64 		priv->sgIF = 20;
65 		mode = "LC";
66 	} else {
67 		priv->sgIF = 124;
68 		mode = "xx";
69 	}
70 
71 	if (params->mode == V4L2_TUNER_RADIO) {
72 		priv->sgIF = 88; /* if frequency is 5.5 MHz */
73 		dprintk("setting tda827x to radio FM\n");
74 	} else
75 		dprintk("setting tda827x to system %s\n", mode);
76 }
77 
78 
79 /* ------------------------------------------------------------------ */
80 
81 struct tda827x_data {
82 	u32 lomax;
83 	u8  spd;
84 	u8  bs;
85 	u8  bp;
86 	u8  cp;
87 	u8  gc3;
88 	u8 div1p5;
89 };
90 
91 static const struct tda827x_data tda827x_table[] = {
92 	{ .lomax =  62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
93 	{ .lomax =  66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
94 	{ .lomax =  76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
95 	{ .lomax =  84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
96 	{ .lomax =  93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
97 	{ .lomax =  98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
98 	{ .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
99 	{ .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
100 	{ .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
101 	{ .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
102 	{ .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
103 	{ .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0},
104 	{ .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
105 	{ .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
106 	{ .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
107 	{ .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
108 	{ .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
109 	{ .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
110 	{ .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
111 	{ .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
112 	{ .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
113 	{ .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
114 	{ .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
115 	{ .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
116 	{ .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
117 	{ .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
118 	{ .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
119 	{ .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
120 	{ .lomax =         0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0}
121 };
122 
tuner_transfer(struct dvb_frontend * fe,struct i2c_msg * msg,const int size)123 static int tuner_transfer(struct dvb_frontend *fe,
124 			  struct i2c_msg *msg,
125 			  const int size)
126 {
127 	int rc;
128 	struct tda827x_priv *priv = fe->tuner_priv;
129 
130 	if (fe->ops.i2c_gate_ctrl)
131 		fe->ops.i2c_gate_ctrl(fe, 1);
132 	rc = i2c_transfer(priv->i2c_adap, msg, size);
133 	if (fe->ops.i2c_gate_ctrl)
134 		fe->ops.i2c_gate_ctrl(fe, 0);
135 
136 	if (rc >= 0 && rc != size)
137 		return -EIO;
138 
139 	return rc;
140 }
141 
tda827xo_set_params(struct dvb_frontend * fe)142 static int tda827xo_set_params(struct dvb_frontend *fe)
143 {
144 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
145 	struct tda827x_priv *priv = fe->tuner_priv;
146 	u8 buf[14];
147 	int rc;
148 
149 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
150 			       .buf = buf, .len = sizeof(buf) };
151 	int i, tuner_freq, if_freq;
152 	u32 N;
153 
154 	dprintk("%s:\n", __func__);
155 	if (c->bandwidth_hz == 0) {
156 		if_freq = 5000000;
157 	} else if (c->bandwidth_hz <= 6000000) {
158 		if_freq = 4000000;
159 	} else if (c->bandwidth_hz <= 7000000) {
160 		if_freq = 4500000;
161 	} else {	/* 8 MHz */
162 		if_freq = 5000000;
163 	}
164 	tuner_freq = c->frequency;
165 
166 	i = 0;
167 	while (tda827x_table[i].lomax < tuner_freq) {
168 		if (tda827x_table[i + 1].lomax == 0)
169 			break;
170 		i++;
171 	}
172 
173 	tuner_freq += if_freq;
174 
175 	N = ((tuner_freq + 125000) / 250000) << (tda827x_table[i].spd + 2);
176 	buf[0] = 0;
177 	buf[1] = (N>>8) | 0x40;
178 	buf[2] = N & 0xff;
179 	buf[3] = 0;
180 	buf[4] = 0x52;
181 	buf[5] = (tda827x_table[i].spd << 6) + (tda827x_table[i].div1p5 << 5) +
182 				(tda827x_table[i].bs << 3) +
183 				tda827x_table[i].bp;
184 	buf[6] = (tda827x_table[i].gc3 << 4) + 0x8f;
185 	buf[7] = 0xbf;
186 	buf[8] = 0x2a;
187 	buf[9] = 0x05;
188 	buf[10] = 0xff;
189 	buf[11] = 0x00;
190 	buf[12] = 0x00;
191 	buf[13] = 0x40;
192 
193 	msg.len = 14;
194 	rc = tuner_transfer(fe, &msg, 1);
195 	if (rc < 0)
196 		goto err;
197 
198 	msleep(500);
199 	/* correct CP value */
200 	buf[0] = 0x30;
201 	buf[1] = 0x50 + tda827x_table[i].cp;
202 	msg.len = 2;
203 
204 	rc = tuner_transfer(fe, &msg, 1);
205 	if (rc < 0)
206 		goto err;
207 
208 	priv->frequency = c->frequency;
209 	priv->bandwidth = c->bandwidth_hz;
210 
211 	return 0;
212 
213 err:
214 	printk(KERN_ERR "%s: could not write to tuner at addr: 0x%02x\n",
215 	       __func__, priv->i2c_addr << 1);
216 	return rc;
217 }
218 
tda827xo_sleep(struct dvb_frontend * fe)219 static int tda827xo_sleep(struct dvb_frontend *fe)
220 {
221 	struct tda827x_priv *priv = fe->tuner_priv;
222 	static u8 buf[] = { 0x30, 0xd0 };
223 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
224 			       .buf = buf, .len = sizeof(buf) };
225 
226 	dprintk("%s:\n", __func__);
227 	tuner_transfer(fe, &msg, 1);
228 
229 	if (priv->cfg && priv->cfg->sleep)
230 		priv->cfg->sleep(fe);
231 
232 	return 0;
233 }
234 
235 /* ------------------------------------------------------------------ */
236 
tda827xo_set_analog_params(struct dvb_frontend * fe,struct analog_parameters * params)237 static int tda827xo_set_analog_params(struct dvb_frontend *fe,
238 				      struct analog_parameters *params)
239 {
240 	unsigned char tuner_reg[8];
241 	unsigned char reg2[2];
242 	u32 N;
243 	int i;
244 	struct tda827x_priv *priv = fe->tuner_priv;
245 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0 };
246 	unsigned int freq = params->frequency;
247 
248 	tda827x_set_std(fe, params);
249 
250 	if (params->mode == V4L2_TUNER_RADIO)
251 		freq = freq / 1000;
252 
253 	N = freq + priv->sgIF;
254 
255 	i = 0;
256 	while (tda827x_table[i].lomax < N * 62500) {
257 		if (tda827x_table[i + 1].lomax == 0)
258 			break;
259 		i++;
260 	}
261 
262 	N = N << tda827x_table[i].spd;
263 
264 	tuner_reg[0] = 0;
265 	tuner_reg[1] = (unsigned char)(N>>8);
266 	tuner_reg[2] = (unsigned char) N;
267 	tuner_reg[3] = 0x40;
268 	tuner_reg[4] = 0x52 + (priv->lpsel << 5);
269 	tuner_reg[5] = (tda827x_table[i].spd    << 6) +
270 		       (tda827x_table[i].div1p5 << 5) +
271 		       (tda827x_table[i].bs     << 3) + tda827x_table[i].bp;
272 	tuner_reg[6] = 0x8f + (tda827x_table[i].gc3 << 4);
273 	tuner_reg[7] = 0x8f;
274 
275 	msg.buf = tuner_reg;
276 	msg.len = 8;
277 	tuner_transfer(fe, &msg, 1);
278 
279 	msg.buf = reg2;
280 	msg.len = 2;
281 	reg2[0] = 0x80;
282 	reg2[1] = 0;
283 	tuner_transfer(fe, &msg, 1);
284 
285 	reg2[0] = 0x60;
286 	reg2[1] = 0xbf;
287 	tuner_transfer(fe, &msg, 1);
288 
289 	reg2[0] = 0x30;
290 	reg2[1] = tuner_reg[4] + 0x80;
291 	tuner_transfer(fe, &msg, 1);
292 
293 	msleep(1);
294 	reg2[0] = 0x30;
295 	reg2[1] = tuner_reg[4] + 4;
296 	tuner_transfer(fe, &msg, 1);
297 
298 	msleep(1);
299 	reg2[0] = 0x30;
300 	reg2[1] = tuner_reg[4];
301 	tuner_transfer(fe, &msg, 1);
302 
303 	msleep(550);
304 	reg2[0] = 0x30;
305 	reg2[1] = (tuner_reg[4] & 0xfc) + tda827x_table[i].cp;
306 	tuner_transfer(fe, &msg, 1);
307 
308 	reg2[0] = 0x60;
309 	reg2[1] = 0x3f;
310 	tuner_transfer(fe, &msg, 1);
311 
312 	reg2[0] = 0x80;
313 	reg2[1] = 0x08;   /* Vsync en */
314 	tuner_transfer(fe, &msg, 1);
315 
316 	priv->frequency = params->frequency;
317 
318 	return 0;
319 }
320 
tda827xo_agcf(struct dvb_frontend * fe)321 static void tda827xo_agcf(struct dvb_frontend *fe)
322 {
323 	struct tda827x_priv *priv = fe->tuner_priv;
324 	unsigned char data[] = { 0x80, 0x0c };
325 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
326 			       .buf = data, .len = 2};
327 
328 	tuner_transfer(fe, &msg, 1);
329 }
330 
331 /* ------------------------------------------------------------------ */
332 
333 struct tda827xa_data {
334 	u32 lomax;
335 	u8  svco;
336 	u8  spd;
337 	u8  scr;
338 	u8  sbs;
339 	u8  gc3;
340 };
341 
342 static struct tda827xa_data tda827xa_dvbt[] = {
343 	{ .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1},
344 	{ .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
345 	{ .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
346 	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
347 	{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
348 	{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
349 	{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
350 	{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
351 	{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
352 	{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
353 	{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
354 	{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
355 	{ .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
356 	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
357 	{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
358 	{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
359 	{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
360 	{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
361 	{ .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
362 	{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
363 	{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
364 	{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
365 	{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
366 	{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
367 	{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
368 	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
369 	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
370 };
371 
372 static struct tda827xa_data tda827xa_dvbc[] = {
373 	{ .lomax =  50125000, .svco = 2, .spd = 4, .scr = 2, .sbs = 0, .gc3 = 3},
374 	{ .lomax =  58500000, .svco = 3, .spd = 4, .scr = 2, .sbs = 0, .gc3 = 3},
375 	{ .lomax =  69250000, .svco = 0, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
376 	{ .lomax =  83625000, .svco = 1, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
377 	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
378 	{ .lomax = 100250000, .svco = 2, .spd = 3, .scr = 2, .sbs = 1, .gc3 = 1},
379 	{ .lomax = 117000000, .svco = 3, .spd = 3, .scr = 2, .sbs = 1, .gc3 = 1},
380 	{ .lomax = 138500000, .svco = 0, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
381 	{ .lomax = 167250000, .svco = 1, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
382 	{ .lomax = 187000000, .svco = 2, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
383 	{ .lomax = 200500000, .svco = 2, .spd = 2, .scr = 2, .sbs = 2, .gc3 = 1},
384 	{ .lomax = 234000000, .svco = 3, .spd = 2, .scr = 2, .sbs = 2, .gc3 = 3},
385 	{ .lomax = 277000000, .svco = 0, .spd = 1, .scr = 2, .sbs = 2, .gc3 = 3},
386 	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 2, .sbs = 2, .gc3 = 1},
387 	{ .lomax = 334500000, .svco = 1, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 3},
388 	{ .lomax = 401000000, .svco = 2, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 3},
389 	{ .lomax = 468000000, .svco = 3, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 1},
390 	{ .lomax = 535000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
391 	{ .lomax = 554000000, .svco = 0, .spd = 0, .scr = 2, .sbs = 3, .gc3 = 1},
392 	{ .lomax = 638000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
393 	{ .lomax = 669000000, .svco = 1, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
394 	{ .lomax = 720000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
395 	{ .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
396 	{ .lomax = 835000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
397 	{ .lomax = 885000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
398 	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
399 	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
400 };
401 
402 static struct tda827xa_data tda827xa_analog[] = {
403 	{ .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 3},
404 	{ .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
405 	{ .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
406 	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
407 	{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
408 	{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
409 	{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
410 	{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
411 	{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
412 	{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
413 	{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 3},
414 	{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 3},
415 	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
416 	{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
417 	{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
418 	{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
419 	{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
420 	{ .lomax = 554000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
421 	{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
422 	{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
423 	{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
424 	{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
425 	{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
426 	{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
427 	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
428 	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
429 };
430 
tda827xa_sleep(struct dvb_frontend * fe)431 static int tda827xa_sleep(struct dvb_frontend *fe)
432 {
433 	struct tda827x_priv *priv = fe->tuner_priv;
434 	static u8 buf[] = { 0x30, 0x90 };
435 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
436 			       .buf = buf, .len = sizeof(buf) };
437 
438 	dprintk("%s:\n", __func__);
439 
440 	tuner_transfer(fe, &msg, 1);
441 
442 	if (priv->cfg && priv->cfg->sleep)
443 		priv->cfg->sleep(fe);
444 
445 	return 0;
446 }
447 
tda827xa_lna_gain(struct dvb_frontend * fe,int high,struct analog_parameters * params)448 static void tda827xa_lna_gain(struct dvb_frontend *fe, int high,
449 			      struct analog_parameters *params)
450 {
451 	struct tda827x_priv *priv = fe->tuner_priv;
452 	unsigned char buf[] = {0x22, 0x01};
453 	int arg;
454 	int gp_func;
455 	struct i2c_msg msg = { .flags = 0, .buf = buf, .len = sizeof(buf) };
456 
457 	if (NULL == priv->cfg) {
458 		dprintk("tda827x_config not defined, cannot set LNA gain!\n");
459 		return;
460 	}
461 	msg.addr = priv->cfg->switch_addr;
462 	if (priv->cfg->config) {
463 		if (high)
464 			dprintk("setting LNA to high gain\n");
465 		else
466 			dprintk("setting LNA to low gain\n");
467 	}
468 	switch (priv->cfg->config) {
469 	case TDA8290_LNA_OFF: /* no LNA */
470 		break;
471 	case TDA8290_LNA_GP0_HIGH_ON: /* switch is GPIO 0 of tda8290 */
472 	case TDA8290_LNA_GP0_HIGH_OFF:
473 		if (params == NULL) {
474 			gp_func = 0;
475 			arg  = 0;
476 		} else {
477 			/* turn Vsync on */
478 			gp_func = 1;
479 			if (params->std & V4L2_STD_MN)
480 				arg = 1;
481 			else
482 				arg = 0;
483 		}
484 		if (fe->callback)
485 			fe->callback(priv->i2c_adap->algo_data,
486 				     DVB_FRONTEND_COMPONENT_TUNER,
487 				     gp_func, arg);
488 		buf[1] = high ? 0 : 1;
489 		if (priv->cfg->config == TDA8290_LNA_GP0_HIGH_OFF)
490 			buf[1] = high ? 1 : 0;
491 		tuner_transfer(fe, &msg, 1);
492 		break;
493 	case TDA8290_LNA_ON_BRIDGE: /* switch with GPIO of saa713x */
494 		if (fe->callback)
495 			fe->callback(priv->i2c_adap->algo_data,
496 				     DVB_FRONTEND_COMPONENT_TUNER, 0, high);
497 		break;
498 	}
499 }
500 
tda827xa_set_params(struct dvb_frontend * fe)501 static int tda827xa_set_params(struct dvb_frontend *fe)
502 {
503 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
504 	struct tda827x_priv *priv = fe->tuner_priv;
505 	struct tda827xa_data *frequency_map = tda827xa_dvbt;
506 	u8 buf[11];
507 
508 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
509 			       .buf = buf, .len = sizeof(buf) };
510 
511 	int i, tuner_freq, if_freq, rc;
512 	u32 N;
513 
514 	dprintk("%s:\n", __func__);
515 
516 	tda827xa_lna_gain(fe, 1, NULL);
517 	msleep(20);
518 
519 	if (c->bandwidth_hz == 0) {
520 		if_freq = 5000000;
521 	} else if (c->bandwidth_hz <= 6000000) {
522 		if_freq = 4000000;
523 	} else if (c->bandwidth_hz <= 7000000) {
524 		if_freq = 4500000;
525 	} else {	/* 8 MHz */
526 		if_freq = 5000000;
527 	}
528 	tuner_freq = c->frequency;
529 
530 	switch (c->delivery_system) {
531 	case SYS_DVBC_ANNEX_A:
532 	case SYS_DVBC_ANNEX_C:
533 		dprintk("%s select tda827xa_dvbc\n", __func__);
534 		frequency_map = tda827xa_dvbc;
535 		break;
536 	default:
537 		break;
538 	}
539 
540 	i = 0;
541 	while (frequency_map[i].lomax < tuner_freq) {
542 		if (frequency_map[i + 1].lomax == 0)
543 			break;
544 		i++;
545 	}
546 
547 	tuner_freq += if_freq;
548 
549 	N = ((tuner_freq + 31250) / 62500) << frequency_map[i].spd;
550 	buf[0] = 0;            // subaddress
551 	buf[1] = N >> 8;
552 	buf[2] = N & 0xff;
553 	buf[3] = 0;
554 	buf[4] = 0x16;
555 	buf[5] = (frequency_map[i].spd << 5) + (frequency_map[i].svco << 3) +
556 			frequency_map[i].sbs;
557 	buf[6] = 0x4b + (frequency_map[i].gc3 << 4);
558 	buf[7] = 0x1c;
559 	buf[8] = 0x06;
560 	buf[9] = 0x24;
561 	buf[10] = 0x00;
562 	msg.len = 11;
563 	rc = tuner_transfer(fe, &msg, 1);
564 	if (rc < 0)
565 		goto err;
566 
567 	buf[0] = 0x90;
568 	buf[1] = 0xff;
569 	buf[2] = 0x60;
570 	buf[3] = 0x00;
571 	buf[4] = 0x59;  // lpsel, for 6MHz + 2
572 	msg.len = 5;
573 	rc = tuner_transfer(fe, &msg, 1);
574 	if (rc < 0)
575 		goto err;
576 
577 	buf[0] = 0xa0;
578 	buf[1] = 0x40;
579 	msg.len = 2;
580 	rc = tuner_transfer(fe, &msg, 1);
581 	if (rc < 0)
582 		goto err;
583 
584 	msleep(11);
585 	msg.flags = I2C_M_RD;
586 	rc = tuner_transfer(fe, &msg, 1);
587 	if (rc < 0)
588 		goto err;
589 	msg.flags = 0;
590 
591 	buf[1] >>= 4;
592 	dprintk("tda8275a AGC2 gain is: %d\n", buf[1]);
593 	if ((buf[1]) < 2) {
594 		tda827xa_lna_gain(fe, 0, NULL);
595 		buf[0] = 0x60;
596 		buf[1] = 0x0c;
597 		rc = tuner_transfer(fe, &msg, 1);
598 		if (rc < 0)
599 			goto err;
600 	}
601 
602 	buf[0] = 0xc0;
603 	buf[1] = 0x99;    // lpsel, for 6MHz + 2
604 	rc = tuner_transfer(fe, &msg, 1);
605 	if (rc < 0)
606 		goto err;
607 
608 	buf[0] = 0x60;
609 	buf[1] = 0x3c;
610 	rc = tuner_transfer(fe, &msg, 1);
611 	if (rc < 0)
612 		goto err;
613 
614 	/* correct CP value */
615 	buf[0] = 0x30;
616 	buf[1] = 0x10 + frequency_map[i].scr;
617 	rc = tuner_transfer(fe, &msg, 1);
618 	if (rc < 0)
619 		goto err;
620 
621 	msleep(163);
622 	buf[0] = 0xc0;
623 	buf[1] = 0x39;  // lpsel, for 6MHz + 2
624 	rc = tuner_transfer(fe, &msg, 1);
625 	if (rc < 0)
626 		goto err;
627 
628 	msleep(3);
629 	/* freeze AGC1 */
630 	buf[0] = 0x50;
631 	buf[1] = 0x4f + (frequency_map[i].gc3 << 4);
632 	rc = tuner_transfer(fe, &msg, 1);
633 	if (rc < 0)
634 		goto err;
635 
636 	priv->frequency = c->frequency;
637 	priv->bandwidth = c->bandwidth_hz;
638 
639 	return 0;
640 
641 err:
642 	printk(KERN_ERR "%s: could not write to tuner at addr: 0x%02x\n",
643 	       __func__, priv->i2c_addr << 1);
644 	return rc;
645 }
646 
647 
tda827xa_set_analog_params(struct dvb_frontend * fe,struct analog_parameters * params)648 static int tda827xa_set_analog_params(struct dvb_frontend *fe,
649 				      struct analog_parameters *params)
650 {
651 	unsigned char tuner_reg[11];
652 	u32 N;
653 	int i;
654 	struct tda827x_priv *priv = fe->tuner_priv;
655 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
656 			       .buf = tuner_reg, .len = sizeof(tuner_reg) };
657 	unsigned int freq = params->frequency;
658 
659 	tda827x_set_std(fe, params);
660 
661 	tda827xa_lna_gain(fe, 1, params);
662 	msleep(10);
663 
664 	if (params->mode == V4L2_TUNER_RADIO)
665 		freq = freq / 1000;
666 
667 	N = freq + priv->sgIF;
668 
669 	i = 0;
670 	while (tda827xa_analog[i].lomax < N * 62500) {
671 		if (tda827xa_analog[i + 1].lomax == 0)
672 			break;
673 		i++;
674 	}
675 
676 	N = N << tda827xa_analog[i].spd;
677 
678 	tuner_reg[0] = 0;
679 	tuner_reg[1] = (unsigned char)(N>>8);
680 	tuner_reg[2] = (unsigned char) N;
681 	tuner_reg[3] = 0;
682 	tuner_reg[4] = 0x16;
683 	tuner_reg[5] = (tda827xa_analog[i].spd << 5) +
684 		       (tda827xa_analog[i].svco << 3) +
685 			tda827xa_analog[i].sbs;
686 	tuner_reg[6] = 0x8b + (tda827xa_analog[i].gc3 << 4);
687 	tuner_reg[7] = 0x1c;
688 	tuner_reg[8] = 4;
689 	tuner_reg[9] = 0x20;
690 	tuner_reg[10] = 0x00;
691 	msg.len = 11;
692 	tuner_transfer(fe, &msg, 1);
693 
694 	tuner_reg[0] = 0x90;
695 	tuner_reg[1] = 0xff;
696 	tuner_reg[2] = 0xe0;
697 	tuner_reg[3] = 0;
698 	tuner_reg[4] = 0x99 + (priv->lpsel << 1);
699 	msg.len = 5;
700 	tuner_transfer(fe, &msg, 1);
701 
702 	tuner_reg[0] = 0xa0;
703 	tuner_reg[1] = 0xc0;
704 	msg.len = 2;
705 	tuner_transfer(fe, &msg, 1);
706 
707 	tuner_reg[0] = 0x30;
708 	tuner_reg[1] = 0x10 + tda827xa_analog[i].scr;
709 	tuner_transfer(fe, &msg, 1);
710 
711 	msg.flags = I2C_M_RD;
712 	tuner_transfer(fe, &msg, 1);
713 	msg.flags = 0;
714 	tuner_reg[1] >>= 4;
715 	dprintk("AGC2 gain is: %d\n", tuner_reg[1]);
716 	if (tuner_reg[1] < 1)
717 		tda827xa_lna_gain(fe, 0, params);
718 
719 	msleep(100);
720 	tuner_reg[0] = 0x60;
721 	tuner_reg[1] = 0x3c;
722 	tuner_transfer(fe, &msg, 1);
723 
724 	msleep(163);
725 	tuner_reg[0] = 0x50;
726 	tuner_reg[1] = 0x8f + (tda827xa_analog[i].gc3 << 4);
727 	tuner_transfer(fe, &msg, 1);
728 
729 	tuner_reg[0] = 0x80;
730 	tuner_reg[1] = 0x28;
731 	tuner_transfer(fe, &msg, 1);
732 
733 	tuner_reg[0] = 0xb0;
734 	tuner_reg[1] = 0x01;
735 	tuner_transfer(fe, &msg, 1);
736 
737 	tuner_reg[0] = 0xc0;
738 	tuner_reg[1] = 0x19 + (priv->lpsel << 1);
739 	tuner_transfer(fe, &msg, 1);
740 
741 	priv->frequency = params->frequency;
742 
743 	return 0;
744 }
745 
tda827xa_agcf(struct dvb_frontend * fe)746 static void tda827xa_agcf(struct dvb_frontend *fe)
747 {
748 	struct tda827x_priv *priv = fe->tuner_priv;
749 	unsigned char data[] = {0x80, 0x2c};
750 	struct i2c_msg msg = {.addr = priv->i2c_addr, .flags = 0,
751 			      .buf = data, .len = 2};
752 	tuner_transfer(fe, &msg, 1);
753 }
754 
755 /* ------------------------------------------------------------------ */
756 
tda827x_release(struct dvb_frontend * fe)757 static void tda827x_release(struct dvb_frontend *fe)
758 {
759 	kfree(fe->tuner_priv);
760 	fe->tuner_priv = NULL;
761 }
762 
tda827x_get_frequency(struct dvb_frontend * fe,u32 * frequency)763 static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
764 {
765 	struct tda827x_priv *priv = fe->tuner_priv;
766 	*frequency = priv->frequency;
767 	return 0;
768 }
769 
tda827x_get_bandwidth(struct dvb_frontend * fe,u32 * bandwidth)770 static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
771 {
772 	struct tda827x_priv *priv = fe->tuner_priv;
773 	*bandwidth = priv->bandwidth;
774 	return 0;
775 }
776 
tda827x_init(struct dvb_frontend * fe)777 static int tda827x_init(struct dvb_frontend *fe)
778 {
779 	struct tda827x_priv *priv = fe->tuner_priv;
780 	dprintk("%s:\n", __func__);
781 	if (priv->cfg && priv->cfg->init)
782 		priv->cfg->init(fe);
783 
784 	return 0;
785 }
786 
787 static int tda827x_probe_version(struct dvb_frontend *fe);
788 
tda827x_initial_init(struct dvb_frontend * fe)789 static int tda827x_initial_init(struct dvb_frontend *fe)
790 {
791 	int ret;
792 	ret = tda827x_probe_version(fe);
793 	if (ret)
794 		return ret;
795 	return fe->ops.tuner_ops.init(fe);
796 }
797 
tda827x_initial_sleep(struct dvb_frontend * fe)798 static int tda827x_initial_sleep(struct dvb_frontend *fe)
799 {
800 	int ret;
801 	ret = tda827x_probe_version(fe);
802 	if (ret)
803 		return ret;
804 	return fe->ops.tuner_ops.sleep(fe);
805 }
806 
807 static const struct dvb_tuner_ops tda827xo_tuner_ops = {
808 	.info = {
809 		.name = "Philips TDA827X",
810 		.frequency_min_hz  =  55 * MHz,
811 		.frequency_max_hz  = 860 * MHz,
812 		.frequency_step_hz = 250 * kHz
813 	},
814 	.release = tda827x_release,
815 	.init = tda827x_initial_init,
816 	.sleep = tda827x_initial_sleep,
817 	.set_params = tda827xo_set_params,
818 	.set_analog_params = tda827xo_set_analog_params,
819 	.get_frequency = tda827x_get_frequency,
820 	.get_bandwidth = tda827x_get_bandwidth,
821 };
822 
823 static const struct dvb_tuner_ops tda827xa_tuner_ops = {
824 	.info = {
825 		.name = "Philips TDA827XA",
826 		.frequency_min_hz  =  44 * MHz,
827 		.frequency_max_hz  = 906 * MHz,
828 		.frequency_step_hz = 62500
829 	},
830 	.release = tda827x_release,
831 	.init = tda827x_init,
832 	.sleep = tda827xa_sleep,
833 	.set_params = tda827xa_set_params,
834 	.set_analog_params = tda827xa_set_analog_params,
835 	.get_frequency = tda827x_get_frequency,
836 	.get_bandwidth = tda827x_get_bandwidth,
837 };
838 
tda827x_probe_version(struct dvb_frontend * fe)839 static int tda827x_probe_version(struct dvb_frontend *fe)
840 {
841 	u8 data;
842 	int rc;
843 	struct tda827x_priv *priv = fe->tuner_priv;
844 	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = I2C_M_RD,
845 			       .buf = &data, .len = 1 };
846 
847 	rc = tuner_transfer(fe, &msg, 1);
848 
849 	if (rc < 0) {
850 		printk("%s: could not read from tuner at addr: 0x%02x\n",
851 		       __func__, msg.addr << 1);
852 		return rc;
853 	}
854 	if ((data & 0x3c) == 0) {
855 		dprintk("tda827x tuner found\n");
856 		fe->ops.tuner_ops.init  = tda827x_init;
857 		fe->ops.tuner_ops.sleep = tda827xo_sleep;
858 		if (priv->cfg)
859 			priv->cfg->agcf = tda827xo_agcf;
860 	} else {
861 		dprintk("tda827xa tuner found\n");
862 		memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
863 		if (priv->cfg)
864 			priv->cfg->agcf = tda827xa_agcf;
865 	}
866 	return 0;
867 }
868 
tda827x_attach(struct dvb_frontend * fe,int addr,struct i2c_adapter * i2c,struct tda827x_config * cfg)869 struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
870 				    struct i2c_adapter *i2c,
871 				    struct tda827x_config *cfg)
872 {
873 	struct tda827x_priv *priv = NULL;
874 
875 	dprintk("%s:\n", __func__);
876 	priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL);
877 	if (priv == NULL)
878 		return NULL;
879 
880 	priv->i2c_addr = addr;
881 	priv->i2c_adap = i2c;
882 	priv->cfg = cfg;
883 	memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
884 	fe->tuner_priv = priv;
885 
886 	dprintk("type set to %s\n", fe->ops.tuner_ops.info.name);
887 
888 	return fe;
889 }
890 EXPORT_SYMBOL_GPL(tda827x_attach);
891 
892 MODULE_DESCRIPTION("DVB TDA827x driver");
893 MODULE_AUTHOR("Hartmut Hackmann <hartmut.hackmann@t-online.de>");
894 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
895 MODULE_LICENSE("GPL");
896