1/*
2 *
3 * (c) 2005 Hartmut Hackmann
4 * (c) 2007 Michael Krufky
5 *
6 *  This program is free software; you can redistribute it and/or modify
7 *  it under the terms of the GNU General Public License as published by
8 *  the Free Software Foundation; either version 2 of the License, or
9 *  (at your option) any later version.
10 *
11 *  This program is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *  GNU General Public License for more details.
15 *
16 *  You should have received a copy of the GNU General Public License
17 *  along with this program; if not, write to the Free Software
18 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21#include <linux/module.h>
22#include <linux/slab.h>
23#include <asm/types.h>
24#include <linux/dvb/frontend.h>
25#include <linux/videodev2.h>
26
27#include "tda827x.h"
28
29static int debug;
30module_param(debug, int, 0644);
31MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
32
33#define dprintk(args...) \
34	do {					    \
35		if (debug) printk(KERN_DEBUG "tda827x: " args); \
36	} while (0)
37
38struct tda827x_priv {
39	int i2c_addr;
40	struct i2c_adapter *i2c_adap;
41	struct tda827x_config *cfg;
42
43	unsigned int sgIF;
44	unsigned char lpsel;
45
46	u32 frequency;
47	u32 bandwidth;
48};
49
50static void tda827x_set_std(struct dvb_frontend *fe,
51			    struct analog_parameters *params)
52{
53	struct tda827x_priv *priv = fe->tuner_priv;
54	char *mode;
55
56	priv->lpsel = 0;
57	if (params->std & V4L2_STD_MN) {
58		priv->sgIF = 92;
59		priv->lpsel = 1;
60		mode = "MN";
61	} else if (params->std & V4L2_STD_B) {
62		priv->sgIF = 108;
63		mode = "B";
64	} else if (params->std & V4L2_STD_GH) {
65		priv->sgIF = 124;
66		mode = "GH";
67	} else if (params->std & V4L2_STD_PAL_I) {
68		priv->sgIF = 124;
69		mode = "I";
70	} else if (params->std & V4L2_STD_DK) {
71		priv->sgIF = 124;
72		mode = "DK";
73	} else if (params->std & V4L2_STD_SECAM_L) {
74		priv->sgIF = 124;
75		mode = "L";
76	} else if (params->std & V4L2_STD_SECAM_LC) {
77		priv->sgIF = 20;
78		mode = "LC";
79	} else {
80		priv->sgIF = 124;
81		mode = "xx";
82	}
83
84	if (params->mode == V4L2_TUNER_RADIO) {
85		priv->sgIF = 88; /* if frequency is 5.5 MHz */
86		dprintk("setting tda827x to radio FM\n");
87	} else
88		dprintk("setting tda827x to system %s\n", mode);
89}
90
91
92/* ------------------------------------------------------------------ */
93
94struct tda827x_data {
95	u32 lomax;
96	u8  spd;
97	u8  bs;
98	u8  bp;
99	u8  cp;
100	u8  gc3;
101	u8 div1p5;
102};
103
104static const struct tda827x_data tda827x_table[] = {
105	{ .lomax =  62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
106	{ .lomax =  66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
107	{ .lomax =  76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
108	{ .lomax =  84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
109	{ .lomax =  93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
110	{ .lomax =  98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
111	{ .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
112	{ .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
113	{ .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
114	{ .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
115	{ .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
116	{ .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0},
117	{ .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
118	{ .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
119	{ .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
120	{ .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
121	{ .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
122	{ .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
123	{ .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
124	{ .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
125	{ .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
126	{ .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
127	{ .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
128	{ .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
129	{ .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
130	{ .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
131	{ .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
132	{ .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
133	{ .lomax =         0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0}
134};
135
136static int tuner_transfer(struct dvb_frontend *fe,
137			  struct i2c_msg *msg,
138			  const int size)
139{
140	int rc;
141	struct tda827x_priv *priv = fe->tuner_priv;
142
143	if (fe->ops.i2c_gate_ctrl)
144		fe->ops.i2c_gate_ctrl(fe, 1);
145	rc = i2c_transfer(priv->i2c_adap, msg, size);
146	if (fe->ops.i2c_gate_ctrl)
147		fe->ops.i2c_gate_ctrl(fe, 0);
148
149	if (rc >= 0 && rc != size)
150		return -EIO;
151
152	return rc;
153}
154
155static int tda827xo_set_params(struct dvb_frontend *fe)
156{
157	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
158	struct tda827x_priv *priv = fe->tuner_priv;
159	u8 buf[14];
160	int rc;
161
162	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
163			       .buf = buf, .len = sizeof(buf) };
164	int i, tuner_freq, if_freq;
165	u32 N;
166
167	dprintk("%s:\n", __func__);
168	if (c->bandwidth_hz == 0) {
169		if_freq = 5000000;
170	} else if (c->bandwidth_hz <= 6000000) {
171		if_freq = 4000000;
172	} else if (c->bandwidth_hz <= 7000000) {
173		if_freq = 4500000;
174	} else {	/* 8 MHz */
175		if_freq = 5000000;
176	}
177	tuner_freq = c->frequency;
178
179	i = 0;
180	while (tda827x_table[i].lomax < tuner_freq) {
181		if (tda827x_table[i + 1].lomax == 0)
182			break;
183		i++;
184	}
185
186	tuner_freq += if_freq;
187
188	N = ((tuner_freq + 125000) / 250000) << (tda827x_table[i].spd + 2);
189	buf[0] = 0;
190	buf[1] = (N>>8) | 0x40;
191	buf[2] = N & 0xff;
192	buf[3] = 0;
193	buf[4] = 0x52;
194	buf[5] = (tda827x_table[i].spd << 6) + (tda827x_table[i].div1p5 << 5) +
195				(tda827x_table[i].bs << 3) +
196				tda827x_table[i].bp;
197	buf[6] = (tda827x_table[i].gc3 << 4) + 0x8f;
198	buf[7] = 0xbf;
199	buf[8] = 0x2a;
200	buf[9] = 0x05;
201	buf[10] = 0xff;
202	buf[11] = 0x00;
203	buf[12] = 0x00;
204	buf[13] = 0x40;
205
206	msg.len = 14;
207	rc = tuner_transfer(fe, &msg, 1);
208	if (rc < 0)
209		goto err;
210
211	msleep(500);
212	/* correct CP value */
213	buf[0] = 0x30;
214	buf[1] = 0x50 + tda827x_table[i].cp;
215	msg.len = 2;
216
217	rc = tuner_transfer(fe, &msg, 1);
218	if (rc < 0)
219		goto err;
220
221	priv->frequency = c->frequency;
222	priv->bandwidth = c->bandwidth_hz;
223
224	return 0;
225
226err:
227	printk(KERN_ERR "%s: could not write to tuner at addr: 0x%02x\n",
228	       __func__, priv->i2c_addr << 1);
229	return rc;
230}
231
232static int tda827xo_sleep(struct dvb_frontend *fe)
233{
234	struct tda827x_priv *priv = fe->tuner_priv;
235	static u8 buf[] = { 0x30, 0xd0 };
236	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
237			       .buf = buf, .len = sizeof(buf) };
238
239	dprintk("%s:\n", __func__);
240	tuner_transfer(fe, &msg, 1);
241
242	if (priv->cfg && priv->cfg->sleep)
243		priv->cfg->sleep(fe);
244
245	return 0;
246}
247
248/* ------------------------------------------------------------------ */
249
250static int tda827xo_set_analog_params(struct dvb_frontend *fe,
251				      struct analog_parameters *params)
252{
253	unsigned char tuner_reg[8];
254	unsigned char reg2[2];
255	u32 N;
256	int i;
257	struct tda827x_priv *priv = fe->tuner_priv;
258	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0 };
259	unsigned int freq = params->frequency;
260
261	tda827x_set_std(fe, params);
262
263	if (params->mode == V4L2_TUNER_RADIO)
264		freq = freq / 1000;
265
266	N = freq + priv->sgIF;
267
268	i = 0;
269	while (tda827x_table[i].lomax < N * 62500) {
270		if (tda827x_table[i + 1].lomax == 0)
271			break;
272		i++;
273	}
274
275	N = N << tda827x_table[i].spd;
276
277	tuner_reg[0] = 0;
278	tuner_reg[1] = (unsigned char)(N>>8);
279	tuner_reg[2] = (unsigned char) N;
280	tuner_reg[3] = 0x40;
281	tuner_reg[4] = 0x52 + (priv->lpsel << 5);
282	tuner_reg[5] = (tda827x_table[i].spd    << 6) +
283		       (tda827x_table[i].div1p5 << 5) +
284		       (tda827x_table[i].bs     << 3) + tda827x_table[i].bp;
285	tuner_reg[6] = 0x8f + (tda827x_table[i].gc3 << 4);
286	tuner_reg[7] = 0x8f;
287
288	msg.buf = tuner_reg;
289	msg.len = 8;
290	tuner_transfer(fe, &msg, 1);
291
292	msg.buf = reg2;
293	msg.len = 2;
294	reg2[0] = 0x80;
295	reg2[1] = 0;
296	tuner_transfer(fe, &msg, 1);
297
298	reg2[0] = 0x60;
299	reg2[1] = 0xbf;
300	tuner_transfer(fe, &msg, 1);
301
302	reg2[0] = 0x30;
303	reg2[1] = tuner_reg[4] + 0x80;
304	tuner_transfer(fe, &msg, 1);
305
306	msleep(1);
307	reg2[0] = 0x30;
308	reg2[1] = tuner_reg[4] + 4;
309	tuner_transfer(fe, &msg, 1);
310
311	msleep(1);
312	reg2[0] = 0x30;
313	reg2[1] = tuner_reg[4];
314	tuner_transfer(fe, &msg, 1);
315
316	msleep(550);
317	reg2[0] = 0x30;
318	reg2[1] = (tuner_reg[4] & 0xfc) + tda827x_table[i].cp;
319	tuner_transfer(fe, &msg, 1);
320
321	reg2[0] = 0x60;
322	reg2[1] = 0x3f;
323	tuner_transfer(fe, &msg, 1);
324
325	reg2[0] = 0x80;
326	reg2[1] = 0x08;   /* Vsync en */
327	tuner_transfer(fe, &msg, 1);
328
329	priv->frequency = params->frequency;
330
331	return 0;
332}
333
334static void tda827xo_agcf(struct dvb_frontend *fe)
335{
336	struct tda827x_priv *priv = fe->tuner_priv;
337	unsigned char data[] = { 0x80, 0x0c };
338	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
339			       .buf = data, .len = 2};
340
341	tuner_transfer(fe, &msg, 1);
342}
343
344/* ------------------------------------------------------------------ */
345
346struct tda827xa_data {
347	u32 lomax;
348	u8  svco;
349	u8  spd;
350	u8  scr;
351	u8  sbs;
352	u8  gc3;
353};
354
355static struct tda827xa_data tda827xa_dvbt[] = {
356	{ .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1},
357	{ .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
358	{ .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
359	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
360	{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
361	{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
362	{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
363	{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
364	{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
365	{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
366	{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
367	{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
368	{ .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
369	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
370	{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
371	{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
372	{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
373	{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
374	{ .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
375	{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
376	{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
377	{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
378	{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
379	{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
380	{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
381	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
382	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
383};
384
385static struct tda827xa_data tda827xa_dvbc[] = {
386	{ .lomax =  50125000, .svco = 2, .spd = 4, .scr = 2, .sbs = 0, .gc3 = 3},
387	{ .lomax =  58500000, .svco = 3, .spd = 4, .scr = 2, .sbs = 0, .gc3 = 3},
388	{ .lomax =  69250000, .svco = 0, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
389	{ .lomax =  83625000, .svco = 1, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
390	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
391	{ .lomax = 100250000, .svco = 2, .spd = 3, .scr = 2, .sbs = 1, .gc3 = 1},
392	{ .lomax = 117000000, .svco = 3, .spd = 3, .scr = 2, .sbs = 1, .gc3 = 1},
393	{ .lomax = 138500000, .svco = 0, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
394	{ .lomax = 167250000, .svco = 1, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
395	{ .lomax = 187000000, .svco = 2, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
396	{ .lomax = 200500000, .svco = 2, .spd = 2, .scr = 2, .sbs = 2, .gc3 = 1},
397	{ .lomax = 234000000, .svco = 3, .spd = 2, .scr = 2, .sbs = 2, .gc3 = 3},
398	{ .lomax = 277000000, .svco = 0, .spd = 1, .scr = 2, .sbs = 2, .gc3 = 3},
399	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 2, .sbs = 2, .gc3 = 1},
400	{ .lomax = 334500000, .svco = 1, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 3},
401	{ .lomax = 401000000, .svco = 2, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 3},
402	{ .lomax = 468000000, .svco = 3, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 1},
403	{ .lomax = 535000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
404	{ .lomax = 554000000, .svco = 0, .spd = 0, .scr = 2, .sbs = 3, .gc3 = 1},
405	{ .lomax = 638000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
406	{ .lomax = 669000000, .svco = 1, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
407	{ .lomax = 720000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
408	{ .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
409	{ .lomax = 835000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
410	{ .lomax = 885000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
411	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
412	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
413};
414
415static struct tda827xa_data tda827xa_analog[] = {
416	{ .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 3},
417	{ .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
418	{ .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
419	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
420	{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
421	{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
422	{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
423	{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
424	{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
425	{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
426	{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 3},
427	{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 3},
428	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
429	{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
430	{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
431	{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
432	{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
433	{ .lomax = 554000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
434	{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
435	{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
436	{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
437	{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
438	{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
439	{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
440	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
441	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
442};
443
444static int tda827xa_sleep(struct dvb_frontend *fe)
445{
446	struct tda827x_priv *priv = fe->tuner_priv;
447	static u8 buf[] = { 0x30, 0x90 };
448	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
449			       .buf = buf, .len = sizeof(buf) };
450
451	dprintk("%s:\n", __func__);
452
453	tuner_transfer(fe, &msg, 1);
454
455	if (priv->cfg && priv->cfg->sleep)
456		priv->cfg->sleep(fe);
457
458	return 0;
459}
460
461static void tda827xa_lna_gain(struct dvb_frontend *fe, int high,
462			      struct analog_parameters *params)
463{
464	struct tda827x_priv *priv = fe->tuner_priv;
465	unsigned char buf[] = {0x22, 0x01};
466	int arg;
467	int gp_func;
468	struct i2c_msg msg = { .flags = 0, .buf = buf, .len = sizeof(buf) };
469
470	if (NULL == priv->cfg) {
471		dprintk("tda827x_config not defined, cannot set LNA gain!\n");
472		return;
473	}
474	msg.addr = priv->cfg->switch_addr;
475	if (priv->cfg->config) {
476		if (high)
477			dprintk("setting LNA to high gain\n");
478		else
479			dprintk("setting LNA to low gain\n");
480	}
481	switch (priv->cfg->config) {
482	case TDA8290_LNA_OFF: /* no LNA */
483		break;
484	case TDA8290_LNA_GP0_HIGH_ON: /* switch is GPIO 0 of tda8290 */
485	case TDA8290_LNA_GP0_HIGH_OFF:
486		if (params == NULL) {
487			gp_func = 0;
488			arg  = 0;
489		} else {
490			/* turn Vsync on */
491			gp_func = 1;
492			if (params->std & V4L2_STD_MN)
493				arg = 1;
494			else
495				arg = 0;
496		}
497		if (fe->callback)
498			fe->callback(priv->i2c_adap->algo_data,
499				     DVB_FRONTEND_COMPONENT_TUNER,
500				     gp_func, arg);
501		buf[1] = high ? 0 : 1;
502		if (priv->cfg->config == TDA8290_LNA_GP0_HIGH_OFF)
503			buf[1] = high ? 1 : 0;
504		tuner_transfer(fe, &msg, 1);
505		break;
506	case TDA8290_LNA_ON_BRIDGE: /* switch with GPIO of saa713x */
507		if (fe->callback)
508			fe->callback(priv->i2c_adap->algo_data,
509				     DVB_FRONTEND_COMPONENT_TUNER, 0, high);
510		break;
511	}
512}
513
514static int tda827xa_set_params(struct dvb_frontend *fe)
515{
516	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
517	struct tda827x_priv *priv = fe->tuner_priv;
518	struct tda827xa_data *frequency_map = tda827xa_dvbt;
519	u8 buf[11];
520
521	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
522			       .buf = buf, .len = sizeof(buf) };
523
524	int i, tuner_freq, if_freq, rc;
525	u32 N;
526
527	dprintk("%s:\n", __func__);
528
529	tda827xa_lna_gain(fe, 1, NULL);
530	msleep(20);
531
532	if (c->bandwidth_hz == 0) {
533		if_freq = 5000000;
534	} else if (c->bandwidth_hz <= 6000000) {
535		if_freq = 4000000;
536	} else if (c->bandwidth_hz <= 7000000) {
537		if_freq = 4500000;
538	} else {	/* 8 MHz */
539		if_freq = 5000000;
540	}
541	tuner_freq = c->frequency;
542
543	switch (c->delivery_system) {
544	case SYS_DVBC_ANNEX_A:
545	case SYS_DVBC_ANNEX_C:
546		dprintk("%s select tda827xa_dvbc\n", __func__);
547		frequency_map = tda827xa_dvbc;
548		break;
549	default:
550		break;
551	}
552
553	i = 0;
554	while (frequency_map[i].lomax < tuner_freq) {
555		if (frequency_map[i + 1].lomax == 0)
556			break;
557		i++;
558	}
559
560	tuner_freq += if_freq;
561
562	N = ((tuner_freq + 31250) / 62500) << frequency_map[i].spd;
563	buf[0] = 0;            // subaddress
564	buf[1] = N >> 8;
565	buf[2] = N & 0xff;
566	buf[3] = 0;
567	buf[4] = 0x16;
568	buf[5] = (frequency_map[i].spd << 5) + (frequency_map[i].svco << 3) +
569			frequency_map[i].sbs;
570	buf[6] = 0x4b + (frequency_map[i].gc3 << 4);
571	buf[7] = 0x1c;
572	buf[8] = 0x06;
573	buf[9] = 0x24;
574	buf[10] = 0x00;
575	msg.len = 11;
576	rc = tuner_transfer(fe, &msg, 1);
577	if (rc < 0)
578		goto err;
579
580	buf[0] = 0x90;
581	buf[1] = 0xff;
582	buf[2] = 0x60;
583	buf[3] = 0x00;
584	buf[4] = 0x59;  // lpsel, for 6MHz + 2
585	msg.len = 5;
586	rc = tuner_transfer(fe, &msg, 1);
587	if (rc < 0)
588		goto err;
589
590	buf[0] = 0xa0;
591	buf[1] = 0x40;
592	msg.len = 2;
593	rc = tuner_transfer(fe, &msg, 1);
594	if (rc < 0)
595		goto err;
596
597	msleep(11);
598	msg.flags = I2C_M_RD;
599	rc = tuner_transfer(fe, &msg, 1);
600	if (rc < 0)
601		goto err;
602	msg.flags = 0;
603
604	buf[1] >>= 4;
605	dprintk("tda8275a AGC2 gain is: %d\n", buf[1]);
606	if ((buf[1]) < 2) {
607		tda827xa_lna_gain(fe, 0, NULL);
608		buf[0] = 0x60;
609		buf[1] = 0x0c;
610		rc = tuner_transfer(fe, &msg, 1);
611		if (rc < 0)
612			goto err;
613	}
614
615	buf[0] = 0xc0;
616	buf[1] = 0x99;    // lpsel, for 6MHz + 2
617	rc = tuner_transfer(fe, &msg, 1);
618	if (rc < 0)
619		goto err;
620
621	buf[0] = 0x60;
622	buf[1] = 0x3c;
623	rc = tuner_transfer(fe, &msg, 1);
624	if (rc < 0)
625		goto err;
626
627	/* correct CP value */
628	buf[0] = 0x30;
629	buf[1] = 0x10 + frequency_map[i].scr;
630	rc = tuner_transfer(fe, &msg, 1);
631	if (rc < 0)
632		goto err;
633
634	msleep(163);
635	buf[0] = 0xc0;
636	buf[1] = 0x39;  // lpsel, for 6MHz + 2
637	rc = tuner_transfer(fe, &msg, 1);
638	if (rc < 0)
639		goto err;
640
641	msleep(3);
642	/* freeze AGC1 */
643	buf[0] = 0x50;
644	buf[1] = 0x4f + (frequency_map[i].gc3 << 4);
645	rc = tuner_transfer(fe, &msg, 1);
646	if (rc < 0)
647		goto err;
648
649	priv->frequency = c->frequency;
650	priv->bandwidth = c->bandwidth_hz;
651
652	return 0;
653
654err:
655	printk(KERN_ERR "%s: could not write to tuner at addr: 0x%02x\n",
656	       __func__, priv->i2c_addr << 1);
657	return rc;
658}
659
660
661static int tda827xa_set_analog_params(struct dvb_frontend *fe,
662				      struct analog_parameters *params)
663{
664	unsigned char tuner_reg[11];
665	u32 N;
666	int i;
667	struct tda827x_priv *priv = fe->tuner_priv;
668	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
669			       .buf = tuner_reg, .len = sizeof(tuner_reg) };
670	unsigned int freq = params->frequency;
671
672	tda827x_set_std(fe, params);
673
674	tda827xa_lna_gain(fe, 1, params);
675	msleep(10);
676
677	if (params->mode == V4L2_TUNER_RADIO)
678		freq = freq / 1000;
679
680	N = freq + priv->sgIF;
681
682	i = 0;
683	while (tda827xa_analog[i].lomax < N * 62500) {
684		if (tda827xa_analog[i + 1].lomax == 0)
685			break;
686		i++;
687	}
688
689	N = N << tda827xa_analog[i].spd;
690
691	tuner_reg[0] = 0;
692	tuner_reg[1] = (unsigned char)(N>>8);
693	tuner_reg[2] = (unsigned char) N;
694	tuner_reg[3] = 0;
695	tuner_reg[4] = 0x16;
696	tuner_reg[5] = (tda827xa_analog[i].spd << 5) +
697		       (tda827xa_analog[i].svco << 3) +
698			tda827xa_analog[i].sbs;
699	tuner_reg[6] = 0x8b + (tda827xa_analog[i].gc3 << 4);
700	tuner_reg[7] = 0x1c;
701	tuner_reg[8] = 4;
702	tuner_reg[9] = 0x20;
703	tuner_reg[10] = 0x00;
704	msg.len = 11;
705	tuner_transfer(fe, &msg, 1);
706
707	tuner_reg[0] = 0x90;
708	tuner_reg[1] = 0xff;
709	tuner_reg[2] = 0xe0;
710	tuner_reg[3] = 0;
711	tuner_reg[4] = 0x99 + (priv->lpsel << 1);
712	msg.len = 5;
713	tuner_transfer(fe, &msg, 1);
714
715	tuner_reg[0] = 0xa0;
716	tuner_reg[1] = 0xc0;
717	msg.len = 2;
718	tuner_transfer(fe, &msg, 1);
719
720	tuner_reg[0] = 0x30;
721	tuner_reg[1] = 0x10 + tda827xa_analog[i].scr;
722	tuner_transfer(fe, &msg, 1);
723
724	msg.flags = I2C_M_RD;
725	tuner_transfer(fe, &msg, 1);
726	msg.flags = 0;
727	tuner_reg[1] >>= 4;
728	dprintk("AGC2 gain is: %d\n", tuner_reg[1]);
729	if (tuner_reg[1] < 1)
730		tda827xa_lna_gain(fe, 0, params);
731
732	msleep(100);
733	tuner_reg[0] = 0x60;
734	tuner_reg[1] = 0x3c;
735	tuner_transfer(fe, &msg, 1);
736
737	msleep(163);
738	tuner_reg[0] = 0x50;
739	tuner_reg[1] = 0x8f + (tda827xa_analog[i].gc3 << 4);
740	tuner_transfer(fe, &msg, 1);
741
742	tuner_reg[0] = 0x80;
743	tuner_reg[1] = 0x28;
744	tuner_transfer(fe, &msg, 1);
745
746	tuner_reg[0] = 0xb0;
747	tuner_reg[1] = 0x01;
748	tuner_transfer(fe, &msg, 1);
749
750	tuner_reg[0] = 0xc0;
751	tuner_reg[1] = 0x19 + (priv->lpsel << 1);
752	tuner_transfer(fe, &msg, 1);
753
754	priv->frequency = params->frequency;
755
756	return 0;
757}
758
759static void tda827xa_agcf(struct dvb_frontend *fe)
760{
761	struct tda827x_priv *priv = fe->tuner_priv;
762	unsigned char data[] = {0x80, 0x2c};
763	struct i2c_msg msg = {.addr = priv->i2c_addr, .flags = 0,
764			      .buf = data, .len = 2};
765	tuner_transfer(fe, &msg, 1);
766}
767
768/* ------------------------------------------------------------------ */
769
770static int tda827x_release(struct dvb_frontend *fe)
771{
772	kfree(fe->tuner_priv);
773	fe->tuner_priv = NULL;
774	return 0;
775}
776
777static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
778{
779	struct tda827x_priv *priv = fe->tuner_priv;
780	*frequency = priv->frequency;
781	return 0;
782}
783
784static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
785{
786	struct tda827x_priv *priv = fe->tuner_priv;
787	*bandwidth = priv->bandwidth;
788	return 0;
789}
790
791static int tda827x_init(struct dvb_frontend *fe)
792{
793	struct tda827x_priv *priv = fe->tuner_priv;
794	dprintk("%s:\n", __func__);
795	if (priv->cfg && priv->cfg->init)
796		priv->cfg->init(fe);
797
798	return 0;
799}
800
801static int tda827x_probe_version(struct dvb_frontend *fe);
802
803static int tda827x_initial_init(struct dvb_frontend *fe)
804{
805	int ret;
806	ret = tda827x_probe_version(fe);
807	if (ret)
808		return ret;
809	return fe->ops.tuner_ops.init(fe);
810}
811
812static int tda827x_initial_sleep(struct dvb_frontend *fe)
813{
814	int ret;
815	ret = tda827x_probe_version(fe);
816	if (ret)
817		return ret;
818	return fe->ops.tuner_ops.sleep(fe);
819}
820
821static struct dvb_tuner_ops tda827xo_tuner_ops = {
822	.info = {
823		.name = "Philips TDA827X",
824		.frequency_min  =  55000000,
825		.frequency_max  = 860000000,
826		.frequency_step =    250000
827	},
828	.release = tda827x_release,
829	.init = tda827x_initial_init,
830	.sleep = tda827x_initial_sleep,
831	.set_params = tda827xo_set_params,
832	.set_analog_params = tda827xo_set_analog_params,
833	.get_frequency = tda827x_get_frequency,
834	.get_bandwidth = tda827x_get_bandwidth,
835};
836
837static struct dvb_tuner_ops tda827xa_tuner_ops = {
838	.info = {
839		.name = "Philips TDA827XA",
840		.frequency_min  =  44000000,
841		.frequency_max  = 906000000,
842		.frequency_step =     62500
843	},
844	.release = tda827x_release,
845	.init = tda827x_init,
846	.sleep = tda827xa_sleep,
847	.set_params = tda827xa_set_params,
848	.set_analog_params = tda827xa_set_analog_params,
849	.get_frequency = tda827x_get_frequency,
850	.get_bandwidth = tda827x_get_bandwidth,
851};
852
853static int tda827x_probe_version(struct dvb_frontend *fe)
854{
855	u8 data;
856	int rc;
857	struct tda827x_priv *priv = fe->tuner_priv;
858	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = I2C_M_RD,
859			       .buf = &data, .len = 1 };
860
861	rc = tuner_transfer(fe, &msg, 1);
862
863	if (rc < 0) {
864		printk("%s: could not read from tuner at addr: 0x%02x\n",
865		       __func__, msg.addr << 1);
866		return rc;
867	}
868	if ((data & 0x3c) == 0) {
869		dprintk("tda827x tuner found\n");
870		fe->ops.tuner_ops.init  = tda827x_init;
871		fe->ops.tuner_ops.sleep = tda827xo_sleep;
872		if (priv->cfg)
873			priv->cfg->agcf = tda827xo_agcf;
874	} else {
875		dprintk("tda827xa tuner found\n");
876		memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
877		if (priv->cfg)
878			priv->cfg->agcf = tda827xa_agcf;
879	}
880	return 0;
881}
882
883struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
884				    struct i2c_adapter *i2c,
885				    struct tda827x_config *cfg)
886{
887	struct tda827x_priv *priv = NULL;
888
889	dprintk("%s:\n", __func__);
890	priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL);
891	if (priv == NULL)
892		return NULL;
893
894	priv->i2c_addr = addr;
895	priv->i2c_adap = i2c;
896	priv->cfg = cfg;
897	memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
898	fe->tuner_priv = priv;
899
900	dprintk("type set to %s\n", fe->ops.tuner_ops.info.name);
901
902	return fe;
903}
904EXPORT_SYMBOL_GPL(tda827x_attach);
905
906MODULE_DESCRIPTION("DVB TDA827x driver");
907MODULE_AUTHOR("Hartmut Hackmann <hartmut.hackmann@t-online.de>");
908MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
909MODULE_LICENSE("GPL");
910