3 * (The TDA9875 is used on the Diamond DTV2000 french version
4 * Other cards probably use these chips as well.)
5 * This driver will not complain if used with any
6 * other i2c device with the same address.
8 * Copyright (c) 2000 Guillaume Delvit based on Gerd Knorr source and
10 * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
11 * This code is placed under the terms of the GNU General Public License
12 * Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu)
13 * Which was based on tda8425.c by Greg Alexander (c) 1998
16 * debug - set to 1 if you'd like to see debug messages
18 * Revision: 0.1 - original version
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/string.h>
24 #include <linux/timer.h>
25 #include <linux/delay.h>
26 #include <linux/errno.h>
27 #include <linux/slab.h>
28 #include <linux/i2c.h>
29 #include <linux/videodev2.h>
30 #include <media/v4l2-device.h>
31 #include <media/v4l2-i2c-drv.h>
32 #include <media/i2c-addr.h>
34 static int debug; /* insmod parameter */
35 module_param(debug, int, S_IRUGO | S_IWUSR);
36 MODULE_LICENSE("GPL");
39 /* This is a superset of the TDA9875 */
41 struct v4l2_subdev sd;
46 static inline struct tda9875 *to_state(struct v4l2_subdev *sd)
48 return container_of(sd, struct tda9875, sd);
51 #define dprintk if (debug) printk
53 /* The TDA9875 is made by Philips Semiconductor
54 * http://www.semiconductors.philips.com
55 * TDA9875: I2C-bus controlled DSP audio processor, FM demodulator
59 /* subaddresses for TDA9875 */
60 #define TDA9875_MUT 0x12 /*General mute (value --> 0b11001100*/
61 #define TDA9875_CFG 0x01 /* Config register (value --> 0b00000000 */
62 #define TDA9875_DACOS 0x13 /*DAC i/o select (ADC) 0b0000100*/
63 #define TDA9875_LOSR 0x16 /*Line output select regirter 0b0100 0001*/
65 #define TDA9875_CH1V 0x0c /*Channel 1 volume (mute)*/
66 #define TDA9875_CH2V 0x0d /*Channel 2 volume (mute)*/
67 #define TDA9875_SC1 0x14 /*SCART 1 in (mono)*/
68 #define TDA9875_SC2 0x15 /*SCART 2 in (mono)*/
70 #define TDA9875_ADCIS 0x17 /*ADC input select (mono) 0b0110 000*/
71 #define TDA9875_AER 0x19 /*Audio effect (AVL+Pseudo) 0b0000 0110*/
72 #define TDA9875_MCS 0x18 /*Main channel select (DAC) 0b0000100*/
73 #define TDA9875_MVL 0x1a /* Main volume gauche */
74 #define TDA9875_MVR 0x1b /* Main volume droite */
75 #define TDA9875_MBA 0x1d /* Main Basse */
76 #define TDA9875_MTR 0x1e /* Main treble */
77 #define TDA9875_ACS 0x1f /* Auxilary channel select (FM) 0b0000000*/
78 #define TDA9875_AVL 0x20 /* Auxilary volume gauche */
79 #define TDA9875_AVR 0x21 /* Auxilary volume droite */
80 #define TDA9875_ABA 0x22 /* Auxilary Basse */
81 #define TDA9875_ATR 0x23 /* Auxilary treble */
83 #define TDA9875_MSR 0x02 /* Monitor select register */
84 #define TDA9875_C1MSB 0x03 /* Carrier 1 (FM) frequency register MSB */
85 #define TDA9875_C1MIB 0x04 /* Carrier 1 (FM) frequency register (16-8]b */
86 #define TDA9875_C1LSB 0x05 /* Carrier 1 (FM) frequency register LSB */
87 #define TDA9875_C2MSB 0x06 /* Carrier 2 (nicam) frequency register MSB */
88 #define TDA9875_C2MIB 0x07 /* Carrier 2 (nicam) frequency register (16-8]b */
89 #define TDA9875_C2LSB 0x08 /* Carrier 2 (nicam) frequency register LSB */
90 #define TDA9875_DCR 0x09 /* Demodulateur configuration regirter*/
91 #define TDA9875_DEEM 0x0a /* FM de-emphasis regirter*/
92 #define TDA9875_FMAT 0x0b /* FM Matrix regirter*/
95 #define TDA9875_MUTE_ON 0xff /* general mute */
96 #define TDA9875_MUTE_OFF 0xcc /* general no mute */
102 static int tda9875_write(struct v4l2_subdev *sd, int subaddr, unsigned char val)
104 struct i2c_client *client = v4l2_get_subdevdata(sd);
105 unsigned char buffer[2];
107 v4l2_dbg(1, debug, sd, "Writing %d 0x%x\n", subaddr, val);
110 if (2 != i2c_master_send(client, buffer, 2)) {
111 v4l2_warn(sd, "I/O error, trying (write %d 0x%x)\n",
119 static int i2c_read_register(struct i2c_client *client, int addr, int reg)
121 unsigned char write[1];
122 unsigned char read[1];
123 struct i2c_msg msgs[2] = {
124 { addr, 0, 1, write },
125 { addr, I2C_M_RD, 1, read }
130 if (2 != i2c_transfer(client->adapter, msgs, 2)) {
131 v4l_warn(client, "I/O error (read2)\n");
134 v4l_dbg(1, debug, client, "chip_read2: reg%d=0x%x\n", reg, read[0]);
138 static void tda9875_set(struct v4l2_subdev *sd)
140 struct tda9875 *tda = to_state(sd);
143 v4l2_dbg(1, debug, sd, "tda9875_set(%04x,%04x,%04x,%04x)\n",
144 tda->lvol, tda->rvol, tda->bass, tda->treble);
146 a = tda->lvol & 0xff;
147 tda9875_write(sd, TDA9875_MVL, a);
149 tda9875_write(sd, TDA9875_MVR, a);
151 tda9875_write(sd, TDA9875_MBA, a);
152 a =tda->treble & 0xff;
153 tda9875_write(sd, TDA9875_MTR, a);
156 static void do_tda9875_init(struct v4l2_subdev *sd)
158 struct tda9875 *t = to_state(sd);
160 v4l2_dbg(1, debug, sd, "In tda9875_init\n");
161 tda9875_write(sd, TDA9875_CFG, 0xd0); /*reg de config 0 (reset)*/
162 tda9875_write(sd, TDA9875_MSR, 0x03); /* Monitor 0b00000XXX*/
163 tda9875_write(sd, TDA9875_C1MSB, 0x00); /*Car1(FM) MSB XMHz*/
164 tda9875_write(sd, TDA9875_C1MIB, 0x00); /*Car1(FM) MIB XMHz*/
165 tda9875_write(sd, TDA9875_C1LSB, 0x00); /*Car1(FM) LSB XMHz*/
166 tda9875_write(sd, TDA9875_C2MSB, 0x00); /*Car2(NICAM) MSB XMHz*/
167 tda9875_write(sd, TDA9875_C2MIB, 0x00); /*Car2(NICAM) MIB XMHz*/
168 tda9875_write(sd, TDA9875_C2LSB, 0x00); /*Car2(NICAM) LSB XMHz*/
169 tda9875_write(sd, TDA9875_DCR, 0x00); /*Demod config 0x00*/
170 tda9875_write(sd, TDA9875_DEEM, 0x44); /*DE-Emph 0b0100 0100*/
171 tda9875_write(sd, TDA9875_FMAT, 0x00); /*FM Matrix reg 0x00*/
172 tda9875_write(sd, TDA9875_SC1, 0x00); /* SCART 1 (SC1)*/
173 tda9875_write(sd, TDA9875_SC2, 0x01); /* SCART 2 (sc2)*/
175 tda9875_write(sd, TDA9875_CH1V, 0x10); /* Channel volume 1 mute*/
176 tda9875_write(sd, TDA9875_CH2V, 0x10); /* Channel volume 2 mute */
177 tda9875_write(sd, TDA9875_DACOS, 0x02); /* sig DAC i/o(in:nicam)*/
178 tda9875_write(sd, TDA9875_ADCIS, 0x6f); /* sig ADC input(in:mono)*/
179 tda9875_write(sd, TDA9875_LOSR, 0x00); /* line out (in:mono)*/
180 tda9875_write(sd, TDA9875_AER, 0x00); /*06 Effect (AVL+PSEUDO) */
181 tda9875_write(sd, TDA9875_MCS, 0x44); /* Main ch select (DAC) */
182 tda9875_write(sd, TDA9875_MVL, 0x03); /* Vol Main left 10dB */
183 tda9875_write(sd, TDA9875_MVR, 0x03); /* Vol Main right 10dB*/
184 tda9875_write(sd, TDA9875_MBA, 0x00); /* Main Bass Main 0dB*/
185 tda9875_write(sd, TDA9875_MTR, 0x00); /* Main Treble Main 0dB*/
186 tda9875_write(sd, TDA9875_ACS, 0x44); /* Aux chan select (dac)*/
187 tda9875_write(sd, TDA9875_AVL, 0x00); /* Vol Aux left 0dB*/
188 tda9875_write(sd, TDA9875_AVR, 0x00); /* Vol Aux right 0dB*/
189 tda9875_write(sd, TDA9875_ABA, 0x00); /* Aux Bass Main 0dB*/
190 tda9875_write(sd, TDA9875_ATR, 0x00); /* Aux Aigus Main 0dB*/
192 tda9875_write(sd, TDA9875_MUT, 0xcc); /* General mute */
194 t->lvol = t->rvol = 0; /* 0dB */
195 t->bass = 0; /* 0dB */
196 t->treble = 0; /* 0dB */
201 static int tda9875_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
203 struct tda9875 *t = to_state(sd);
206 case V4L2_CID_AUDIO_VOLUME:
208 int left = (t->lvol+84)*606;
209 int right = (t->rvol+84)*606;
211 ctrl->value=max(left,right);
214 case V4L2_CID_AUDIO_BALANCE:
216 int left = (t->lvol+84)*606;
217 int right = (t->rvol+84)*606;
218 int volume = max(left,right);
219 int balance = (32768*min(left,right))/
220 (volume ? volume : 1);
221 ctrl->value=(left<right)?
222 (65535-balance) : balance;
225 case V4L2_CID_AUDIO_BASS:
226 ctrl->value = (t->bass+12)*2427; /* min -12 max +15 */
228 case V4L2_CID_AUDIO_TREBLE:
229 ctrl->value = (t->treble+12)*2730;/* min -12 max +12 */
235 static int tda9875_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
237 struct tda9875 *t = to_state(sd);
238 int chvol = 0, volume = 0, balance = 0, left, right;
241 case V4L2_CID_AUDIO_VOLUME:
242 left = (t->lvol+84)*606;
243 right = (t->rvol+84)*606;
245 volume = max(left,right);
246 balance = (32768*min(left,right))/
247 (volume ? volume : 1);
248 balance =(left<right)?
249 (65535-balance) : balance;
251 volume = ctrl->value;
255 case V4L2_CID_AUDIO_BALANCE:
256 left = (t->lvol+84)*606;
257 right = (t->rvol+84)*606;
259 volume=max(left,right);
261 balance = ctrl->value;
265 case V4L2_CID_AUDIO_BASS:
266 t->bass = ((ctrl->value/2400)-12) & 0xff;
270 t->bass = -12 & 0xff;
272 case V4L2_CID_AUDIO_TREBLE:
273 t->treble = ((ctrl->value/2700)-12) & 0xff;
277 t->treble = -12 & 0xff;
284 left = (min(65536 - balance,32768) *
286 right = (min(balance,32768) *
288 t->lvol = ((left/606)-84) & 0xff;
292 t->lvol = -84 & 0xff;
294 t->rvol = ((right/606)-84) & 0xff;
298 t->rvol = -84 & 0xff;
305 static int tda9875_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
308 case V4L2_CID_AUDIO_VOLUME:
309 return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 58880);
310 case V4L2_CID_AUDIO_BASS:
311 case V4L2_CID_AUDIO_TREBLE:
312 return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 32768);
317 /* ----------------------------------------------------------------------- */
319 static const struct v4l2_subdev_core_ops tda9875_core_ops = {
320 .queryctrl = tda9875_queryctrl,
321 .g_ctrl = tda9875_g_ctrl,
322 .s_ctrl = tda9875_s_ctrl,
325 static const struct v4l2_subdev_ops tda9875_ops = {
326 .core = &tda9875_core_ops,
329 /* ----------------------------------------------------------------------- */
332 /* *********************** *
333 * i2c interface functions *
334 * *********************** */
336 static int tda9875_checkit(struct i2c_client *client, int addr)
340 dic = i2c_read_register(client, addr, 254);
341 rev = i2c_read_register(client, addr, 255);
343 if (dic == 0 || dic == 2) { /* tda9875 and tda9875A */
344 v4l_info(client, "tda9875%s rev. %d detected at 0x%02x\n",
345 dic == 0 ? "" : "A", rev, addr << 1);
348 v4l_info(client, "no such chip at 0x%02x (dic=0x%x rev=0x%x)\n",
349 addr << 1, dic, rev);
353 static int tda9875_probe(struct i2c_client *client,
354 const struct i2c_device_id *id)
357 struct v4l2_subdev *sd;
359 v4l_info(client, "chip found @ 0x%02x (%s)\n",
360 client->addr << 1, client->adapter->name);
362 if (!tda9875_checkit(client, client->addr))
365 t = kzalloc(sizeof(*t), GFP_KERNEL);
369 v4l2_i2c_subdev_init(sd, client, &tda9875_ops);
375 static int tda9875_remove(struct i2c_client *client)
377 struct v4l2_subdev *sd = i2c_get_clientdata(client);
380 v4l2_device_unregister_subdev(sd);
385 static const struct i2c_device_id tda9875_id[] = {
389 MODULE_DEVICE_TABLE(i2c, tda9875_id);
391 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
393 .probe = tda9875_probe,
394 .remove = tda9875_remove,
395 .id_table = tda9875_id,