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19#include <linux/module.h>
20#include <linux/init.h>
21#include <linux/delay.h>
22#include <linux/errno.h>
23#include <linux/kernel.h>
24#include <linux/interrupt.h>
25#include <linux/i2c.h>
26#include <linux/slab.h>
27#include <media/v4l2-device.h>
28#include <media/v4l2-ctrls.h>
29
30#define DRIVER_NAME "saa7706h"
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48
49#define SAA7706H_REG_CTRL 0x0fff
50#define SAA7706H_CTRL_BYP_PLL 0x0001
51#define SAA7706H_CTRL_PLL_DIV_MASK 0x003e
52#define SAA7706H_CTRL_PLL3_62975MHZ 0x003e
53#define SAA7706H_CTRL_DSP_TURBO 0x0040
54#define SAA7706H_CTRL_PC_RESET_DSP1 0x0080
55#define SAA7706H_CTRL_PC_RESET_DSP2 0x0100
56#define SAA7706H_CTRL_DSP1_ROM_EN_MASK 0x0600
57#define SAA7706H_CTRL_DSP1_FUNC_PROM 0x0000
58#define SAA7706H_CTRL_DSP2_ROM_EN_MASK 0x1800
59#define SAA7706H_CTRL_DSP2_FUNC_PROM 0x0000
60#define SAA7706H_CTRL_DIG_SIL_INTERPOL 0x8000
61
62#define SAA7706H_REG_EVALUATION 0x1ff0
63#define SAA7706H_EVAL_DISABLE_CHARGE_PUMP 0x000001
64#define SAA7706H_EVAL_DCS_CLOCK 0x000002
65#define SAA7706H_EVAL_GNDRC1_ENABLE 0x000004
66#define SAA7706H_EVAL_GNDRC2_ENABLE 0x000008
67
68#define SAA7706H_REG_CL_GEN1 0x1ff3
69#define SAA7706H_CL_GEN1_MIN_LOOPGAIN_MASK 0x00000f
70#define SAA7706H_CL_GEN1_LOOPGAIN_MASK 0x0000f0
71#define SAA7706H_CL_GEN1_COARSE_RATION 0xffff00
72
73#define SAA7706H_REG_CL_GEN2 0x1ff4
74#define SAA7706H_CL_GEN2_WSEDGE_FALLING 0x000001
75#define SAA7706H_CL_GEN2_STOP_VCO 0x000002
76#define SAA7706H_CL_GEN2_FRERUN 0x000004
77#define SAA7706H_CL_GEN2_ADAPTIVE 0x000008
78#define SAA7706H_CL_GEN2_FINE_RATIO_MASK 0x0ffff0
79
80#define SAA7706H_REG_CL_GEN4 0x1ff6
81#define SAA7706H_CL_GEN4_BYPASS_PLL1 0x001000
82#define SAA7706H_CL_GEN4_PLL1_DIV_MASK 0x03e000
83#define SAA7706H_CL_GEN4_DSP1_TURBO 0x040000
84
85#define SAA7706H_REG_SEL 0x1ff7
86#define SAA7706H_SEL_DSP2_SRCA_MASK 0x000007
87#define SAA7706H_SEL_DSP2_FMTA_MASK 0x000031
88#define SAA7706H_SEL_DSP2_SRCB_MASK 0x0001c0
89#define SAA7706H_SEL_DSP2_FMTB_MASK 0x000e00
90#define SAA7706H_SEL_DSP1_SRC_MASK 0x003000
91#define SAA7706H_SEL_DSP1_FMT_MASK 0x01c003
92#define SAA7706H_SEL_SPDIF2 0x020000
93#define SAA7706H_SEL_HOST_IO_FMT_MASK 0x1c0000
94#define SAA7706H_SEL_EN_HOST_IO 0x200000
95
96#define SAA7706H_REG_IAC 0x1ff8
97#define SAA7706H_REG_CLK_SET 0x1ff9
98#define SAA7706H_REG_CLK_COEFF 0x1ffa
99#define SAA7706H_REG_INPUT_SENS 0x1ffb
100#define SAA7706H_INPUT_SENS_RDS_VOL_MASK 0x0003f
101#define SAA7706H_INPUT_SENS_FM_VOL_MASK 0x00fc0
102#define SAA7706H_INPUT_SENS_FM_MPX 0x01000
103#define SAA7706H_INPUT_SENS_OFF_FILTER_A_EN 0x02000
104#define SAA7706H_INPUT_SENS_OFF_FILTER_B_EN 0x04000
105#define SAA7706H_REG_PHONE_NAV_AUDIO 0x1ffc
106#define SAA7706H_REG_IO_CONF_DSP2 0x1ffd
107#define SAA7706H_REG_STATUS_DSP2 0x1ffe
108#define SAA7706H_REG_PC_DSP2 0x1fff
109
110#define SAA7706H_DSP1_MOD0 0x0800
111#define SAA7706H_DSP1_ROM_VER 0x097f
112#define SAA7706H_DSP2_MPTR0 0x1000
113
114#define SAA7706H_DSP1_MODPNTR 0x0000
115
116#define SAA7706H_DSP2_XMEM_CONTLLCW 0x113e
117#define SAA7706H_DSP2_XMEM_BUSAMP 0x114a
118#define SAA7706H_DSP2_XMEM_FDACPNTR 0x11f9
119#define SAA7706H_DSP2_XMEM_IIS1PNTR 0x11fb
120
121#define SAA7706H_DSP2_YMEM_PVGA 0x212a
122#define SAA7706H_DSP2_YMEM_PVAT1 0x212b
123#define SAA7706H_DSP2_YMEM_PVAT 0x212c
124#define SAA7706H_DSP2_YMEM_ROM_VER 0x21ff
125
126#define SUPPORTED_DSP1_ROM_VER 0x667
127
128struct saa7706h_state {
129 struct v4l2_subdev sd;
130 struct v4l2_ctrl_handler hdl;
131 unsigned muted;
132};
133
134static inline struct saa7706h_state *to_state(struct v4l2_subdev *sd)
135{
136 return container_of(sd, struct saa7706h_state, sd);
137}
138
139static int saa7706h_i2c_send(struct i2c_client *client, const u8 *data, int len)
140{
141 int err = i2c_master_send(client, data, len);
142 if (err == len)
143 return 0;
144 return err > 0 ? -EIO : err;
145}
146
147static int saa7706h_i2c_transfer(struct i2c_client *client,
148 struct i2c_msg *msgs, int num)
149{
150 int err = i2c_transfer(client->adapter, msgs, num);
151 if (err == num)
152 return 0;
153 return err > 0 ? -EIO : err;
154}
155
156static int saa7706h_set_reg24(struct v4l2_subdev *sd, u16 reg, u32 val)
157{
158 struct i2c_client *client = v4l2_get_subdevdata(sd);
159 u8 buf[5];
160 int pos = 0;
161
162 buf[pos++] = reg >> 8;
163 buf[pos++] = reg;
164 buf[pos++] = val >> 16;
165 buf[pos++] = val >> 8;
166 buf[pos++] = val;
167
168 return saa7706h_i2c_send(client, buf, pos);
169}
170
171static int saa7706h_set_reg24_err(struct v4l2_subdev *sd, u16 reg, u32 val,
172 int *err)
173{
174 return *err ? *err : saa7706h_set_reg24(sd, reg, val);
175}
176
177static int saa7706h_set_reg16(struct v4l2_subdev *sd, u16 reg, u16 val)
178{
179 struct i2c_client *client = v4l2_get_subdevdata(sd);
180 u8 buf[4];
181 int pos = 0;
182
183 buf[pos++] = reg >> 8;
184 buf[pos++] = reg;
185 buf[pos++] = val >> 8;
186 buf[pos++] = val;
187
188 return saa7706h_i2c_send(client, buf, pos);
189}
190
191static int saa7706h_set_reg16_err(struct v4l2_subdev *sd, u16 reg, u16 val,
192 int *err)
193{
194 return *err ? *err : saa7706h_set_reg16(sd, reg, val);
195}
196
197static int saa7706h_get_reg16(struct v4l2_subdev *sd, u16 reg)
198{
199 struct i2c_client *client = v4l2_get_subdevdata(sd);
200 u8 buf[2];
201 int err;
202 u8 regaddr[] = {reg >> 8, reg};
203 struct i2c_msg msg[] = {
204 {
205 .addr = client->addr,
206 .len = sizeof(regaddr),
207 .buf = regaddr
208 },
209 {
210 .addr = client->addr,
211 .flags = I2C_M_RD,
212 .len = sizeof(buf),
213 .buf = buf
214 }
215 };
216
217 err = saa7706h_i2c_transfer(client, msg, ARRAY_SIZE(msg));
218 if (err)
219 return err;
220
221 return buf[0] << 8 | buf[1];
222}
223
224static int saa7706h_unmute(struct v4l2_subdev *sd)
225{
226 struct saa7706h_state *state = to_state(sd);
227 int err = 0;
228
229 err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
230 SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 |
231 SAA7706H_CTRL_PC_RESET_DSP2, &err);
232
233
234 msleep(1);
235
236 err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
237 SAA7706H_CTRL_PLL3_62975MHZ, &err);
238
239 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_EVALUATION, 0, &err);
240
241 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN1, 0x040022, &err);
242
243 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN2,
244 SAA7706H_CL_GEN2_WSEDGE_FALLING, &err);
245
246 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN4, 0x024080, &err);
247
248 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_SEL, 0x200080, &err);
249
250 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IAC, 0xf4caed, &err);
251
252 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_SET, 0x124334, &err);
253
254 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_COEFF, 0x004a1a,
255 &err);
256
257 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_INPUT_SENS, 0x0071c7,
258 &err);
259
260 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PHONE_NAV_AUDIO,
261 0x0e22ff, &err);
262
263 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IO_CONF_DSP2, 0x001ff8,
264 &err);
265
266 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_STATUS_DSP2, 0x080003,
267 &err);
268
269 err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PC_DSP2, 0x000004, &err);
270
271 err = saa7706h_set_reg16_err(sd, SAA7706H_DSP1_MOD0, 0x0c6c, &err);
272
273 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_MPTR0, 0x000b4b, &err);
274
275 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x000600, &err);
276
277 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x0000c0, &err);
278
279 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000819,
280 &err);
281
282 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x00085a,
283 &err);
284
285 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_BUSAMP, 0x7fffff,
286 &err);
287
288 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_FDACPNTR, 0x2000cb,
289 &err);
290
291 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_IIS1PNTR, 0x2000cb,
292 &err);
293
294 err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVGA, 0x0f80, &err);
295
296 err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT1, 0x0800,
297 &err);
298
299 err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT, 0x0800, &err);
300
301 err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000905,
302 &err);
303 if (!err)
304 state->muted = 0;
305 return err;
306}
307
308static int saa7706h_mute(struct v4l2_subdev *sd)
309{
310 struct saa7706h_state *state = to_state(sd);
311 int err;
312
313 err = saa7706h_set_reg16(sd, SAA7706H_REG_CTRL,
314 SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 |
315 SAA7706H_CTRL_PC_RESET_DSP2);
316 if (!err)
317 state->muted = 1;
318 return err;
319}
320
321static int saa7706h_s_ctrl(struct v4l2_ctrl *ctrl)
322{
323 struct saa7706h_state *state =
324 container_of(ctrl->handler, struct saa7706h_state, hdl);
325
326 switch (ctrl->id) {
327 case V4L2_CID_AUDIO_MUTE:
328 if (ctrl->val)
329 return saa7706h_mute(&state->sd);
330 return saa7706h_unmute(&state->sd);
331 }
332 return -EINVAL;
333}
334
335static const struct v4l2_ctrl_ops saa7706h_ctrl_ops = {
336 .s_ctrl = saa7706h_s_ctrl,
337};
338
339static const struct v4l2_subdev_core_ops saa7706h_core_ops = {
340 .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
341 .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
342 .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
343 .g_ctrl = v4l2_subdev_g_ctrl,
344 .s_ctrl = v4l2_subdev_s_ctrl,
345 .queryctrl = v4l2_subdev_queryctrl,
346 .querymenu = v4l2_subdev_querymenu,
347};
348
349static const struct v4l2_subdev_ops saa7706h_ops = {
350 .core = &saa7706h_core_ops,
351};
352
353
354
355
356
357
358static int saa7706h_probe(struct i2c_client *client,
359 const struct i2c_device_id *id)
360{
361 struct saa7706h_state *state;
362 struct v4l2_subdev *sd;
363 int err;
364
365
366 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
367 return -EIO;
368
369 v4l_info(client, "chip found @ 0x%02x (%s)\n",
370 client->addr << 1, client->adapter->name);
371
372 state = kzalloc(sizeof(struct saa7706h_state), GFP_KERNEL);
373 if (state == NULL)
374 return -ENOMEM;
375 sd = &state->sd;
376 v4l2_i2c_subdev_init(sd, client, &saa7706h_ops);
377
378 v4l2_ctrl_handler_init(&state->hdl, 4);
379 v4l2_ctrl_new_std(&state->hdl, &saa7706h_ctrl_ops,
380 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
381 sd->ctrl_handler = &state->hdl;
382 err = state->hdl.error;
383 if (err)
384 goto err;
385
386
387 err = saa7706h_get_reg16(sd, SAA7706H_DSP1_ROM_VER);
388 if (err < 0)
389 goto err;
390 if (err != SUPPORTED_DSP1_ROM_VER)
391 v4l2_warn(sd, "Unknown DSP1 ROM code version: 0x%x\n", err);
392 state->muted = 1;
393
394
395 err = saa7706h_mute(sd);
396 if (err)
397 goto err;
398
399 return 0;
400
401err:
402 v4l2_device_unregister_subdev(sd);
403 v4l2_ctrl_handler_free(&state->hdl);
404 kfree(to_state(sd));
405
406 printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", err);
407
408 return err;
409}
410
411static int saa7706h_remove(struct i2c_client *client)
412{
413 struct v4l2_subdev *sd = i2c_get_clientdata(client);
414 struct saa7706h_state *state = to_state(sd);
415
416 saa7706h_mute(sd);
417 v4l2_device_unregister_subdev(sd);
418 v4l2_ctrl_handler_free(&state->hdl);
419 kfree(to_state(sd));
420 return 0;
421}
422
423static const struct i2c_device_id saa7706h_id[] = {
424 {DRIVER_NAME, 0},
425 {},
426};
427
428MODULE_DEVICE_TABLE(i2c, saa7706h_id);
429
430static struct i2c_driver saa7706h_driver = {
431 .driver = {
432 .owner = THIS_MODULE,
433 .name = DRIVER_NAME,
434 },
435 .probe = saa7706h_probe,
436 .remove = saa7706h_remove,
437 .id_table = saa7706h_id,
438};
439
440module_i2c_driver(saa7706h_driver);
441
442MODULE_DESCRIPTION("SAA7706H Car Radio DSP driver");
443MODULE_AUTHOR("Mocean Laboratories");
444MODULE_LICENSE("GPL v2");
445
