2 * ASoC codec driver for spear platform
4 * sound/soc/codecs/sta529.c -- spear ALSA Soc codec driver
6 * Copyright (C) 2012 ST Microelectronics
7 * Rajeev Kumar <rajeev-dlh.kumar@st.com>
9 * This file is licensed under the terms of the GNU General Public
10 * License version 2. This program is licensed "as is" without any
11 * warranty of any kind, whether express or implied.
14 #include <linux/clk.h>
15 #include <linux/init.h>
16 #include <linux/i2c.h>
18 #include <linux/module.h>
19 #include <linux/moduleparam.h>
21 #include <linux/regmap.h>
22 #include <linux/slab.h>
24 #include <sound/core.h>
25 #include <sound/initval.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/soc.h>
29 #include <sound/soc-dapm.h>
30 #include <sound/tlv.h>
32 /* STA529 Register offsets */
33 #define STA529_FFXCFG0 0x00
34 #define STA529_FFXCFG1 0x01
35 #define STA529_MVOL 0x02
36 #define STA529_LVOL 0x03
37 #define STA529_RVOL 0x04
38 #define STA529_TTF0 0x05
39 #define STA529_TTF1 0x06
40 #define STA529_TTP0 0x07
41 #define STA529_TTP1 0x08
42 #define STA529_S2PCFG0 0x0A
43 #define STA529_S2PCFG1 0x0B
44 #define STA529_P2SCFG0 0x0C
45 #define STA529_P2SCFG1 0x0D
46 #define STA529_PLLCFG0 0x14
47 #define STA529_PLLCFG1 0x15
48 #define STA529_PLLCFG2 0x16
49 #define STA529_PLLCFG3 0x17
50 #define STA529_PLLPFE 0x18
51 #define STA529_PLLST 0x19
52 #define STA529_ADCCFG 0x1E /*mic_select*/
53 #define STA529_CKOCFG 0x1F
54 #define STA529_MISC 0x20
55 #define STA529_PADST0 0x21
56 #define STA529_PADST1 0x22
57 #define STA529_FFXST 0x23
58 #define STA529_PWMIN1 0x2D
59 #define STA529_PWMIN2 0x2E
60 #define STA529_POWST 0x32
62 #define STA529_MAX_REGISTER 0x32
64 #define STA529_RATES (SNDRV_PCM_RATE_8000 | \
65 SNDRV_PCM_RATE_11025 | \
66 SNDRV_PCM_RATE_16000 | \
67 SNDRV_PCM_RATE_22050 | \
68 SNDRV_PCM_RATE_32000 | \
69 SNDRV_PCM_RATE_44100 | \
72 #define STA529_FORMAT (SNDRV_PCM_FMTBIT_S16_LE | \
73 SNDRV_PCM_FMTBIT_S24_LE | \
74 SNDRV_PCM_FMTBIT_S32_LE)
75 #define S2PC_VALUE 0x98
76 #define CLOCK_OUT 0x60
77 #define LEFT_J_DATA_FORMAT 0x10
78 #define I2S_DATA_FORMAT 0x12
79 #define RIGHT_J_DATA_FORMAT 0x14
80 #define CODEC_MUTE_VAL 0x80
82 #define POWER_CNTLMSAK 0x40
83 #define POWER_STDBY 0x40
87 #define FFX_CLK_ENB 0x01
88 #define FFX_CLK_DIS 0x00
89 #define FFX_CLK_MSK 0x01
90 #define PLAY_FREQ_RANGE_MSK 0x70
91 #define CAP_FREQ_RANGE_MSK 0x0C
92 #define PDATA_LEN_MSK 0xC0
93 #define BCLK_TO_FS_MSK 0x30
94 #define AUDIO_MUTE_MSK 0x80
96 static const struct reg_default sta529_reg_defaults[] = {
97 { 0, 0x35 }, /* R0 - FFX Configuration reg 0 */
98 { 1, 0xc8 }, /* R1 - FFX Configuration reg 1 */
99 { 2, 0x50 }, /* R2 - Master Volume */
100 { 3, 0x00 }, /* R3 - Left Volume */
101 { 4, 0x00 }, /* R4 - Right Volume */
102 { 10, 0xb2 }, /* R10 - S2P Config Reg 0 */
103 { 11, 0x41 }, /* R11 - S2P Config Reg 1 */
104 { 12, 0x92 }, /* R12 - P2S Config Reg 0 */
105 { 13, 0x41 }, /* R13 - P2S Config Reg 1 */
106 { 30, 0xd2 }, /* R30 - ADC Config Reg */
107 { 31, 0x40 }, /* R31 - clock Out Reg */
108 { 32, 0x21 }, /* R32 - Misc Register */
112 struct regmap *regmap;
115 static bool sta529_readable(struct device *dev, unsigned int reg)
138 static const char *pwm_mode_text[] = { "Binary", "Headphone", "Ternary",
141 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -9150, 50, 0);
142 static const DECLARE_TLV_DB_SCALE(master_vol_tlv, -12750, 50, 0);
143 static const SOC_ENUM_SINGLE_DECL(pwm_src, STA529_FFXCFG1, 4, pwm_mode_text);
145 static const struct snd_kcontrol_new sta529_snd_controls[] = {
146 SOC_DOUBLE_R_TLV("Digital Playback Volume", STA529_LVOL, STA529_RVOL, 0,
147 127, 0, out_gain_tlv),
148 SOC_SINGLE_TLV("Master Playback Volume", STA529_MVOL, 0, 127, 1,
150 SOC_ENUM("PWM Select", pwm_src),
153 static int sta529_set_bias_level(struct snd_soc_codec *codec, enum
154 snd_soc_bias_level level)
156 struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec);
159 case SND_SOC_BIAS_ON:
160 case SND_SOC_BIAS_PREPARE:
161 snd_soc_update_bits(codec, STA529_FFXCFG0, POWER_CNTLMSAK,
163 snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK,
166 case SND_SOC_BIAS_STANDBY:
167 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
168 regcache_sync(sta529->regmap);
169 snd_soc_update_bits(codec, STA529_FFXCFG0,
170 POWER_CNTLMSAK, POWER_STDBY);
171 /* Making FFX output to zero */
172 snd_soc_update_bits(codec, STA529_FFXCFG0, FFX_MASK,
174 snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK,
177 case SND_SOC_BIAS_OFF:
182 * store the label for powers down audio subsystem for suspend.This is
183 * used by soc core layer
185 codec->dapm.bias_level = level;
191 static int sta529_hw_params(struct snd_pcm_substream *substream,
192 struct snd_pcm_hw_params *params,
193 struct snd_soc_dai *dai)
195 struct snd_soc_pcm_runtime *rtd = substream->private_data;
196 struct snd_soc_codec *codec = rtd->codec;
197 int pdata, play_freq_val, record_freq_val;
198 int bclk_to_fs_ratio;
200 switch (params_format(params)) {
201 case SNDRV_PCM_FORMAT_S16_LE:
203 bclk_to_fs_ratio = 0;
205 case SNDRV_PCM_FORMAT_S24_LE:
207 bclk_to_fs_ratio = 1;
209 case SNDRV_PCM_FORMAT_S32_LE:
211 bclk_to_fs_ratio = 2;
214 dev_err(codec->dev, "Unsupported format\n");
218 switch (params_rate(params)) {
237 dev_err(codec->dev, "Unsupported rate\n");
241 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
242 snd_soc_update_bits(codec, STA529_S2PCFG1, PDATA_LEN_MSK,
244 snd_soc_update_bits(codec, STA529_S2PCFG1, BCLK_TO_FS_MSK,
245 bclk_to_fs_ratio << 4);
246 snd_soc_update_bits(codec, STA529_MISC, PLAY_FREQ_RANGE_MSK,
249 snd_soc_update_bits(codec, STA529_P2SCFG1, PDATA_LEN_MSK,
251 snd_soc_update_bits(codec, STA529_P2SCFG1, BCLK_TO_FS_MSK,
252 bclk_to_fs_ratio << 4);
253 snd_soc_update_bits(codec, STA529_MISC, CAP_FREQ_RANGE_MSK,
254 record_freq_val << 2);
260 static int sta529_mute(struct snd_soc_dai *dai, int mute)
265 val |= CODEC_MUTE_VAL;
267 snd_soc_update_bits(dai->codec, STA529_FFXCFG0, AUDIO_MUTE_MSK, val);
272 static int sta529_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
274 struct snd_soc_codec *codec = codec_dai->codec;
277 /* interface format */
278 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
279 case SND_SOC_DAIFMT_LEFT_J:
280 mode = LEFT_J_DATA_FORMAT;
282 case SND_SOC_DAIFMT_I2S:
283 mode = I2S_DATA_FORMAT;
285 case SND_SOC_DAIFMT_RIGHT_J:
286 mode = RIGHT_J_DATA_FORMAT;
292 snd_soc_update_bits(codec, STA529_S2PCFG0, 0x0D, mode);
297 static const struct snd_soc_dai_ops sta529_dai_ops = {
298 .hw_params = sta529_hw_params,
299 .set_fmt = sta529_set_dai_fmt,
300 .digital_mute = sta529_mute,
303 static struct snd_soc_dai_driver sta529_dai = {
304 .name = "sta529-audio",
306 .stream_name = "Playback",
309 .rates = STA529_RATES,
310 .formats = STA529_FORMAT,
313 .stream_name = "Capture",
316 .rates = STA529_RATES,
317 .formats = STA529_FORMAT,
319 .ops = &sta529_dai_ops,
322 static int sta529_probe(struct snd_soc_codec *codec)
324 struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec);
327 codec->control_data = sta529->regmap;
328 ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
331 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
334 sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
339 /* power down chip */
340 static int sta529_remove(struct snd_soc_codec *codec)
342 sta529_set_bias_level(codec, SND_SOC_BIAS_OFF);
347 static int sta529_suspend(struct snd_soc_codec *codec)
349 sta529_set_bias_level(codec, SND_SOC_BIAS_OFF);
354 static int sta529_resume(struct snd_soc_codec *codec)
356 sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
361 struct snd_soc_codec_driver sta529_codec_driver = {
362 .probe = sta529_probe,
363 .remove = sta529_remove,
364 .set_bias_level = sta529_set_bias_level,
365 .suspend = sta529_suspend,
366 .resume = sta529_resume,
367 .controls = sta529_snd_controls,
368 .num_controls = ARRAY_SIZE(sta529_snd_controls),
371 static const struct regmap_config sta529_regmap = {
375 .max_register = STA529_MAX_REGISTER,
376 .readable_reg = sta529_readable,
378 .cache_type = REGCACHE_RBTREE,
379 .reg_defaults = sta529_reg_defaults,
380 .num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults),
383 static __devinit int sta529_i2c_probe(struct i2c_client *i2c,
384 const struct i2c_device_id *id)
386 struct sta529 *sta529;
389 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
392 sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL);
393 if (sta529 == NULL) {
394 dev_err(&i2c->dev, "Can not allocate memory\n");
398 sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap);
399 if (IS_ERR(sta529->regmap)) {
400 ret = PTR_ERR(sta529->regmap);
401 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
405 i2c_set_clientdata(i2c, sta529);
407 ret = snd_soc_register_codec(&i2c->dev,
408 &sta529_codec_driver, &sta529_dai, 1);
410 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
415 static int __devexit sta529_i2c_remove(struct i2c_client *client)
417 snd_soc_unregister_codec(&client->dev);
422 static const struct i2c_device_id sta529_i2c_id[] = {
426 MODULE_DEVICE_TABLE(i2c, sta529_i2c_id);
428 static struct i2c_driver sta529_i2c_driver = {
431 .owner = THIS_MODULE,
433 .probe = sta529_i2c_probe,
434 .remove = __devexit_p(sta529_i2c_remove),
435 .id_table = sta529_i2c_id,
438 module_i2c_driver(sta529_i2c_driver);
440 MODULE_DESCRIPTION("ASoC STA529 codec driver");
441 MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>");
442 MODULE_LICENSE("GPL");