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
 16static int debug;
 17module_param(debug, int, 0644);
 18MODULE_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
 25struct 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
 37static 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
 81struct 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
 91static 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
123static 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
142static 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
213err:
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
219static 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
237static 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
321static 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
333struct tda827xa_data {
334	u32 lomax;
335	u8  svco;
336	u8  spd;
337	u8  scr;
338	u8  sbs;
339	u8  gc3;
340};
341
342static 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
372static 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
402static 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
431static 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
448static 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
501static 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
641err:
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
648static 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
746static 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
757static void tda827x_release(struct dvb_frontend *fe)
758{
759	kfree(fe->tuner_priv);
760	fe->tuner_priv = NULL;
761}
762
763static 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
770static 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
777static 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
787static int tda827x_probe_version(struct dvb_frontend *fe);
788
789static 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
798static 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
807static 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
823static 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
839static 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
869struct 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}
890EXPORT_SYMBOL_GPL(tda827x_attach);
891
892MODULE_DESCRIPTION("DVB TDA827x driver");
893MODULE_AUTHOR("Hartmut Hackmann <hartmut.hackmann@t-online.de>");
894MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
895MODULE_LICENSE("GPL");