389 lines
9.3 KiB
C
389 lines
9.3 KiB
C
/*
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* ASoC codec driver for spear platform
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*
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* sound/soc/codecs/sta529.c -- spear ALSA Soc codec driver
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*
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* Copyright (C) 2012 ST Microelectronics
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* Rajeev Kumar <rajeevkumar.linux@gmail.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/clk.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/pm.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/tlv.h>
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/* STA529 Register offsets */
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#define STA529_FFXCFG0 0x00
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#define STA529_FFXCFG1 0x01
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#define STA529_MVOL 0x02
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#define STA529_LVOL 0x03
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#define STA529_RVOL 0x04
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#define STA529_TTF0 0x05
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#define STA529_TTF1 0x06
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#define STA529_TTP0 0x07
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#define STA529_TTP1 0x08
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#define STA529_S2PCFG0 0x0A
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#define STA529_S2PCFG1 0x0B
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#define STA529_P2SCFG0 0x0C
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#define STA529_P2SCFG1 0x0D
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#define STA529_PLLCFG0 0x14
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#define STA529_PLLCFG1 0x15
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#define STA529_PLLCFG2 0x16
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#define STA529_PLLCFG3 0x17
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#define STA529_PLLPFE 0x18
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#define STA529_PLLST 0x19
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#define STA529_ADCCFG 0x1E /*mic_select*/
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#define STA529_CKOCFG 0x1F
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#define STA529_MISC 0x20
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#define STA529_PADST0 0x21
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#define STA529_PADST1 0x22
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#define STA529_FFXST 0x23
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#define STA529_PWMIN1 0x2D
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#define STA529_PWMIN2 0x2E
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#define STA529_POWST 0x32
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#define STA529_MAX_REGISTER 0x32
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#define STA529_RATES (SNDRV_PCM_RATE_8000 | \
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SNDRV_PCM_RATE_11025 | \
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SNDRV_PCM_RATE_16000 | \
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SNDRV_PCM_RATE_22050 | \
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SNDRV_PCM_RATE_32000 | \
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SNDRV_PCM_RATE_44100 | \
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SNDRV_PCM_RATE_48000)
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#define STA529_FORMAT (SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S24_LE | \
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SNDRV_PCM_FMTBIT_S32_LE)
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#define S2PC_VALUE 0x98
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#define CLOCK_OUT 0x60
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#define DATA_FORMAT_MSK 0x0E
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#define LEFT_J_DATA_FORMAT 0x00
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#define I2S_DATA_FORMAT 0x02
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#define RIGHT_J_DATA_FORMAT 0x04
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#define CODEC_MUTE_VAL 0x80
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#define POWER_CNTLMSAK 0x40
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#define POWER_STDBY 0x40
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#define FFX_MASK 0x80
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#define FFX_OFF 0x80
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#define POWER_UP 0x00
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#define FFX_CLK_ENB 0x01
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#define FFX_CLK_DIS 0x00
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#define FFX_CLK_MSK 0x01
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#define PLAY_FREQ_RANGE_MSK 0x70
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#define CAP_FREQ_RANGE_MSK 0x0C
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#define PDATA_LEN_MSK 0xC0
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#define BCLK_TO_FS_MSK 0x30
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#define AUDIO_MUTE_MSK 0x80
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static const struct reg_default sta529_reg_defaults[] = {
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{ 0, 0x35 }, /* R0 - FFX Configuration reg 0 */
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{ 1, 0xc8 }, /* R1 - FFX Configuration reg 1 */
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{ 2, 0x50 }, /* R2 - Master Volume */
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{ 3, 0x00 }, /* R3 - Left Volume */
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{ 4, 0x00 }, /* R4 - Right Volume */
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{ 10, 0xb2 }, /* R10 - S2P Config Reg 0 */
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{ 11, 0x41 }, /* R11 - S2P Config Reg 1 */
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{ 12, 0x92 }, /* R12 - P2S Config Reg 0 */
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{ 13, 0x41 }, /* R13 - P2S Config Reg 1 */
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{ 30, 0xd2 }, /* R30 - ADC Config Reg */
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{ 31, 0x40 }, /* R31 - clock Out Reg */
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{ 32, 0x21 }, /* R32 - Misc Register */
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};
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struct sta529 {
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struct regmap *regmap;
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};
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static bool sta529_readable(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case STA529_FFXCFG0:
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case STA529_FFXCFG1:
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case STA529_MVOL:
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case STA529_LVOL:
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case STA529_RVOL:
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case STA529_S2PCFG0:
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case STA529_S2PCFG1:
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case STA529_P2SCFG0:
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case STA529_P2SCFG1:
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case STA529_ADCCFG:
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case STA529_CKOCFG:
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case STA529_MISC:
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return true;
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default:
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return false;
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}
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}
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static const char *pwm_mode_text[] = { "Binary", "Headphone", "Ternary",
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"Phase-shift"};
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static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -9150, 50, 0);
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static const DECLARE_TLV_DB_SCALE(master_vol_tlv, -12750, 50, 0);
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static SOC_ENUM_SINGLE_DECL(pwm_src, STA529_FFXCFG1, 4, pwm_mode_text);
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static const struct snd_kcontrol_new sta529_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Digital Playback Volume", STA529_LVOL, STA529_RVOL, 0,
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127, 0, out_gain_tlv),
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SOC_SINGLE_TLV("Master Playback Volume", STA529_MVOL, 0, 127, 1,
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master_vol_tlv),
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SOC_ENUM("PWM Select", pwm_src),
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};
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static int sta529_set_bias_level(struct snd_soc_codec *codec, enum
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snd_soc_bias_level level)
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{
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struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec);
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switch (level) {
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case SND_SOC_BIAS_ON:
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case SND_SOC_BIAS_PREPARE:
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snd_soc_update_bits(codec, STA529_FFXCFG0, POWER_CNTLMSAK,
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POWER_UP);
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snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK,
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FFX_CLK_ENB);
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break;
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case SND_SOC_BIAS_STANDBY:
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if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF)
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regcache_sync(sta529->regmap);
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snd_soc_update_bits(codec, STA529_FFXCFG0,
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POWER_CNTLMSAK, POWER_STDBY);
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/* Making FFX output to zero */
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snd_soc_update_bits(codec, STA529_FFXCFG0, FFX_MASK,
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FFX_OFF);
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snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK,
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FFX_CLK_DIS);
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break;
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case SND_SOC_BIAS_OFF:
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break;
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}
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return 0;
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}
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static int sta529_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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int pdata, play_freq_val, record_freq_val;
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int bclk_to_fs_ratio;
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switch (params_width(params)) {
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case 16:
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pdata = 1;
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bclk_to_fs_ratio = 0;
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break;
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case 24:
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pdata = 2;
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bclk_to_fs_ratio = 1;
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break;
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case 32:
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pdata = 3;
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bclk_to_fs_ratio = 2;
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break;
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default:
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dev_err(codec->dev, "Unsupported format\n");
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return -EINVAL;
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}
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switch (params_rate(params)) {
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case 8000:
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case 11025:
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play_freq_val = 0;
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record_freq_val = 2;
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break;
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case 16000:
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case 22050:
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play_freq_val = 1;
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record_freq_val = 0;
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break;
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case 32000:
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case 44100:
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case 48000:
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play_freq_val = 2;
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record_freq_val = 0;
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break;
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default:
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dev_err(codec->dev, "Unsupported rate\n");
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return -EINVAL;
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}
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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snd_soc_update_bits(codec, STA529_S2PCFG1, PDATA_LEN_MSK,
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pdata << 6);
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snd_soc_update_bits(codec, STA529_S2PCFG1, BCLK_TO_FS_MSK,
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bclk_to_fs_ratio << 4);
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snd_soc_update_bits(codec, STA529_MISC, PLAY_FREQ_RANGE_MSK,
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play_freq_val << 4);
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} else {
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snd_soc_update_bits(codec, STA529_P2SCFG1, PDATA_LEN_MSK,
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pdata << 6);
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snd_soc_update_bits(codec, STA529_P2SCFG1, BCLK_TO_FS_MSK,
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bclk_to_fs_ratio << 4);
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snd_soc_update_bits(codec, STA529_MISC, CAP_FREQ_RANGE_MSK,
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record_freq_val << 2);
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}
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return 0;
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}
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static int sta529_mute(struct snd_soc_dai *dai, int mute)
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{
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u8 val = 0;
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if (mute)
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val |= CODEC_MUTE_VAL;
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snd_soc_update_bits(dai->codec, STA529_FFXCFG0, AUDIO_MUTE_MSK, val);
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return 0;
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}
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static int sta529_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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u8 mode = 0;
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/* interface format */
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_LEFT_J:
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mode = LEFT_J_DATA_FORMAT;
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break;
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case SND_SOC_DAIFMT_I2S:
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mode = I2S_DATA_FORMAT;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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mode = RIGHT_J_DATA_FORMAT;
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break;
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default:
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return -EINVAL;
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}
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snd_soc_update_bits(codec, STA529_S2PCFG0, DATA_FORMAT_MSK, mode);
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return 0;
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}
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static const struct snd_soc_dai_ops sta529_dai_ops = {
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.hw_params = sta529_hw_params,
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.set_fmt = sta529_set_dai_fmt,
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.digital_mute = sta529_mute,
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};
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static struct snd_soc_dai_driver sta529_dai = {
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.name = "sta529-audio",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = STA529_RATES,
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.formats = STA529_FORMAT,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = STA529_RATES,
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.formats = STA529_FORMAT,
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},
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.ops = &sta529_dai_ops,
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};
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static const struct snd_soc_codec_driver sta529_codec_driver = {
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.set_bias_level = sta529_set_bias_level,
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.suspend_bias_off = true,
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.controls = sta529_snd_controls,
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.num_controls = ARRAY_SIZE(sta529_snd_controls),
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};
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static const struct regmap_config sta529_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = STA529_MAX_REGISTER,
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.readable_reg = sta529_readable,
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.cache_type = REGCACHE_RBTREE,
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.reg_defaults = sta529_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults),
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};
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static int sta529_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct sta529 *sta529;
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int ret;
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sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL);
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if (!sta529)
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return -ENOMEM;
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sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap);
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if (IS_ERR(sta529->regmap)) {
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ret = PTR_ERR(sta529->regmap);
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dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
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return ret;
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}
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i2c_set_clientdata(i2c, sta529);
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ret = snd_soc_register_codec(&i2c->dev,
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&sta529_codec_driver, &sta529_dai, 1);
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if (ret != 0)
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dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
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return ret;
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}
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static int sta529_i2c_remove(struct i2c_client *client)
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{
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snd_soc_unregister_codec(&client->dev);
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return 0;
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}
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static const struct i2c_device_id sta529_i2c_id[] = {
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{ "sta529", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, sta529_i2c_id);
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static struct i2c_driver sta529_i2c_driver = {
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.driver = {
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.name = "sta529",
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},
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.probe = sta529_i2c_probe,
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.remove = sta529_i2c_remove,
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.id_table = sta529_i2c_id,
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};
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module_i2c_driver(sta529_i2c_driver);
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MODULE_DESCRIPTION("ASoC STA529 codec driver");
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MODULE_AUTHOR("Rajeev Kumar <rajeevkumar.linux@gmail.com>");
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MODULE_LICENSE("GPL");
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