| /* |
| * ALSA SoC TLV320AIC23 codec driver |
| * |
| * Author: Arun KS, <arunks@mistralsolutions.com> |
| * Copyright: (C) 2008 Mistral Solutions Pvt Ltd., |
| * |
| * Based on sound/soc/codecs/wm8731.c by Richard Purdie |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * Notes: |
| * The AIC23 is a driver for a low power stereo audio |
| * codec tlv320aic23 |
| * |
| * The machine layer should disable unsupported inputs/outputs by |
| * snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/i2c.h> |
| #include <linux/platform_device.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/tlv.h> |
| #include <sound/initval.h> |
| |
| #include "tlv320aic23.h" |
| |
| #define AIC23_VERSION "0.1" |
| |
| /* |
| * AIC23 register cache |
| */ |
| static const u16 tlv320aic23_reg[] = { |
| 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */ |
| 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */ |
| 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */ |
| 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */ |
| }; |
| |
| /* |
| * read tlv320aic23 register cache |
| */ |
| static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec |
| *codec, unsigned int reg) |
| { |
| u16 *cache = codec->reg_cache; |
| if (reg >= ARRAY_SIZE(tlv320aic23_reg)) |
| return -1; |
| return cache[reg]; |
| } |
| |
| /* |
| * write tlv320aic23 register cache |
| */ |
| static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec, |
| u8 reg, u16 value) |
| { |
| u16 *cache = codec->reg_cache; |
| if (reg >= ARRAY_SIZE(tlv320aic23_reg)) |
| return; |
| cache[reg] = value; |
| } |
| |
| /* |
| * write to the tlv320aic23 register space |
| */ |
| static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg, |
| unsigned int value) |
| { |
| |
| u8 data[2]; |
| |
| /* TLV320AIC23 has 7 bit address and 9 bits of data |
| * so we need to switch one data bit into reg and rest |
| * of data into val |
| */ |
| |
| if ((reg < 0 || reg > 9) && (reg != 15)) { |
| printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg); |
| return -1; |
| } |
| |
| data[0] = (reg << 1) | (value >> 8 & 0x01); |
| data[1] = value & 0xff; |
| |
| tlv320aic23_write_reg_cache(codec, reg, value); |
| |
| if (codec->hw_write(codec->control_data, data, 2) == 2) |
| return 0; |
| |
| printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__, |
| value, reg); |
| |
| return -EIO; |
| } |
| |
| static const char *rec_src_text[] = { "Line", "Mic" }; |
| static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"}; |
| |
| static const struct soc_enum rec_src_enum = |
| SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); |
| |
| static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls = |
| SOC_DAPM_ENUM("Input Select", rec_src_enum); |
| |
| static const struct soc_enum tlv320aic23_rec_src = |
| SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); |
| static const struct soc_enum tlv320aic23_deemph = |
| SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text); |
| |
| static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0); |
| static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0); |
| static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0); |
| |
| static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| u16 val, reg; |
| |
| val = (ucontrol->value.integer.value[0] & 0x07); |
| |
| /* linear conversion to userspace |
| * 000 = -6db |
| * 001 = -9db |
| * 010 = -12db |
| * 011 = -18db (Min) |
| * 100 = 0db (Max) |
| */ |
| val = (val >= 4) ? 4 : (3 - val); |
| |
| reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0); |
| tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6)); |
| |
| return 0; |
| } |
| |
| static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| u16 val; |
| |
| val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0); |
| val = val >> 6; |
| val = (val >= 4) ? 4 : (3 - val); |
| ucontrol->value.integer.value[0] = val; |
| return 0; |
| |
| } |
| |
| #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ |
| { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ |
| .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ |
| SNDRV_CTL_ELEM_ACCESS_READWRITE,\ |
| .tlv.p = (tlv_array), \ |
| .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\ |
| .put = snd_soc_tlv320aic23_put_volsw, \ |
| .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } |
| |
| static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = { |
| SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL, |
| TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv), |
| SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1), |
| SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL, |
| TLV320AIC23_RINVOL, 7, 1, 0), |
| SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL, |
| TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv), |
| SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1), |
| SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0), |
| SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG, |
| 6, 4, 0, sidetone_vol_tlv), |
| SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph), |
| }; |
| |
| /* PGA Mixer controls for Line and Mic switch */ |
| static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { |
| SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), |
| SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), |
| SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), |
| }; |
| |
| static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { |
| SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), |
| SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), |
| SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, |
| &tlv320aic23_rec_src_mux_controls), |
| SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, |
| &tlv320aic23_output_mixer_controls[0], |
| ARRAY_SIZE(tlv320aic23_output_mixer_controls)), |
| SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), |
| SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), |
| |
| SND_SOC_DAPM_OUTPUT("LHPOUT"), |
| SND_SOC_DAPM_OUTPUT("RHPOUT"), |
| SND_SOC_DAPM_OUTPUT("LOUT"), |
| SND_SOC_DAPM_OUTPUT("ROUT"), |
| |
| SND_SOC_DAPM_INPUT("LLINEIN"), |
| SND_SOC_DAPM_INPUT("RLINEIN"), |
| |
| SND_SOC_DAPM_INPUT("MICIN"), |
| }; |
| |
| static const struct snd_soc_dapm_route intercon[] = { |
| /* Output Mixer */ |
| {"Output Mixer", "Line Bypass Switch", "Line Input"}, |
| {"Output Mixer", "Playback Switch", "DAC"}, |
| {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, |
| |
| /* Outputs */ |
| {"RHPOUT", NULL, "Output Mixer"}, |
| {"LHPOUT", NULL, "Output Mixer"}, |
| {"LOUT", NULL, "Output Mixer"}, |
| {"ROUT", NULL, "Output Mixer"}, |
| |
| /* Inputs */ |
| {"Line Input", "NULL", "LLINEIN"}, |
| {"Line Input", "NULL", "RLINEIN"}, |
| |
| {"Mic Input", "NULL", "MICIN"}, |
| |
| /* input mux */ |
| {"Capture Source", "Line", "Line Input"}, |
| {"Capture Source", "Mic", "Mic Input"}, |
| {"ADC", NULL, "Capture Source"}, |
| |
| }; |
| |
| /* AIC23 driver data */ |
| struct aic23 { |
| struct snd_soc_codec codec; |
| int mclk; |
| int requested_adc; |
| int requested_dac; |
| }; |
| |
| /* |
| * Common Crystals used |
| * 11.2896 Mhz /128 = *88.2k /192 = 58.8k |
| * 12.0000 Mhz /125 = *96k /136 = 88.235K |
| * 12.2880 Mhz /128 = *96k /192 = 64k |
| * 16.9344 Mhz /128 = 132.3k /192 = *88.2k |
| * 18.4320 Mhz /128 = 144k /192 = *96k |
| */ |
| |
| /* |
| * Normal BOSR 0-256/2 = 128, 1-384/2 = 192 |
| * USB BOSR 0-250/2 = 125, 1-272/2 = 136 |
| */ |
| static const int bosr_usb_divisor_table[] = { |
| 128, 125, 192, 136 |
| }; |
| #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7)) |
| #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15)) |
| static const unsigned short sr_valid_mask[] = { |
| LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/ |
| LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ |
| LOWER_GROUP, /* Usb, bosr - 0*/ |
| UPPER_GROUP, /* Usb, bosr - 1*/ |
| }; |
| /* |
| * Every divisor is a factor of 11*12 |
| */ |
| #define SR_MULT (11*12) |
| #define A(x) (x) ? (SR_MULT/x) : 0 |
| static const unsigned char sr_adc_mult_table[] = { |
| A(2), A(2), A(12), A(12), A(0), A(0), A(3), A(1), |
| A(2), A(2), A(11), A(11), A(0), A(0), A(0), A(1) |
| }; |
| static const unsigned char sr_dac_mult_table[] = { |
| A(2), A(12), A(2), A(12), A(0), A(0), A(3), A(1), |
| A(2), A(11), A(2), A(11), A(0), A(0), A(0), A(1) |
| }; |
| |
| static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc, |
| int dac, int dac_l, int dac_h, int need_dac) |
| { |
| if ((adc >= adc_l) && (adc <= adc_h) && |
| (dac >= dac_l) && (dac <= dac_h)) { |
| int diff_adc = need_adc - adc; |
| int diff_dac = need_dac - dac; |
| return abs(diff_adc) + abs(diff_dac); |
| } |
| return UINT_MAX; |
| } |
| |
| static int find_rate(int mclk, u32 need_adc, u32 need_dac) |
| { |
| int i, j; |
| int best_i = -1; |
| int best_j = -1; |
| int best_div = 0; |
| unsigned best_score = UINT_MAX; |
| int adc_l, adc_h, dac_l, dac_h; |
| |
| need_adc *= SR_MULT; |
| need_dac *= SR_MULT; |
| /* |
| * rates given are +/- 1/32 |
| */ |
| adc_l = need_adc - (need_adc >> 5); |
| adc_h = need_adc + (need_adc >> 5); |
| dac_l = need_dac - (need_dac >> 5); |
| dac_h = need_dac + (need_dac >> 5); |
| for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) { |
| int base = mclk / bosr_usb_divisor_table[i]; |
| int mask = sr_valid_mask[i]; |
| for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table); |
| j++, mask >>= 1) { |
| int adc; |
| int dac; |
| int score; |
| if ((mask & 1) == 0) |
| continue; |
| adc = base * sr_adc_mult_table[j]; |
| dac = base * sr_dac_mult_table[j]; |
| score = get_score(adc, adc_l, adc_h, need_adc, |
| dac, dac_l, dac_h, need_dac); |
| if (best_score > score) { |
| best_score = score; |
| best_i = i; |
| best_j = j; |
| best_div = 0; |
| } |
| score = get_score((adc >> 1), adc_l, adc_h, need_adc, |
| (dac >> 1), dac_l, dac_h, need_dac); |
| /* prefer to have a /2 */ |
| if ((score != UINT_MAX) && (best_score >= score)) { |
| best_score = score; |
| best_i = i; |
| best_j = j; |
| best_div = 1; |
| } |
| } |
| } |
| return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); |
| } |
| |
| #ifdef DEBUG |
| static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, |
| u32 *sample_rate_adc, u32 *sample_rate_dac) |
| { |
| int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE); |
| int sr = (src >> 2) & 0x0f; |
| int val = (mclk / bosr_usb_divisor_table[src & 3]); |
| int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; |
| int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; |
| if (src & TLV320AIC23_CLKIN_HALF) { |
| adc >>= 1; |
| dac >>= 1; |
| } |
| *sample_rate_adc = adc; |
| *sample_rate_dac = dac; |
| } |
| #endif |
| |
| static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, |
| u32 sample_rate_adc, u32 sample_rate_dac) |
| { |
| /* Search for the right sample rate */ |
| int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); |
| if (data < 0) { |
| printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", |
| __func__, sample_rate_adc, sample_rate_dac); |
| return -EINVAL; |
| } |
| tlv320aic23_write(codec, TLV320AIC23_SRATE, data); |
| #ifdef DEBUG |
| { |
| u32 adc, dac; |
| get_current_sample_rates(codec, mclk, &adc, &dac); |
| printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", |
| adc, dac, data); |
| } |
| #endif |
| return 0; |
| } |
| |
| static int tlv320aic23_add_widgets(struct snd_soc_codec *codec) |
| { |
| snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, |
| ARRAY_SIZE(tlv320aic23_dapm_widgets)); |
| |
| /* set up audio path interconnects */ |
| snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); |
| |
| snd_soc_dapm_new_widgets(codec); |
| return 0; |
| } |
| |
| static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->card->codec; |
| u16 iface_reg; |
| int ret; |
| struct aic23 *aic23 = container_of(codec, struct aic23, codec); |
| u32 sample_rate_adc = aic23->requested_adc; |
| u32 sample_rate_dac = aic23->requested_dac; |
| u32 sample_rate = params_rate(params); |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| aic23->requested_dac = sample_rate_dac = sample_rate; |
| if (!sample_rate_adc) |
| sample_rate_adc = sample_rate; |
| } else { |
| aic23->requested_adc = sample_rate_adc = sample_rate; |
| if (!sample_rate_dac) |
| sample_rate_dac = sample_rate; |
| } |
| ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, |
| sample_rate_dac); |
| if (ret < 0) |
| return ret; |
| |
| iface_reg = |
| tlv320aic23_read_reg_cache(codec, |
| TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| iface_reg |= (0x01 << 2); |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| iface_reg |= (0x02 << 2); |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| iface_reg |= (0x03 << 2); |
| break; |
| } |
| tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); |
| |
| return 0; |
| } |
| |
| static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->card->codec; |
| |
| /* set active */ |
| tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); |
| |
| return 0; |
| } |
| |
| static void tlv320aic23_shutdown(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->card->codec; |
| struct aic23 *aic23 = container_of(codec, struct aic23, codec); |
| |
| /* deactivate */ |
| if (!codec->active) { |
| udelay(50); |
| tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); |
| } |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| aic23->requested_dac = 0; |
| else |
| aic23->requested_adc = 0; |
| } |
| |
| static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 reg; |
| |
| reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); |
| if (mute) |
| reg |= TLV320AIC23_DACM_MUTE; |
| |
| else |
| reg &= ~TLV320AIC23_DACM_MUTE; |
| |
| tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); |
| |
| return 0; |
| } |
| |
| static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| unsigned int fmt) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| u16 iface_reg; |
| |
| iface_reg = |
| tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); |
| |
| /* set master/slave audio interface */ |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| iface_reg |= TLV320AIC23_MS_MASTER; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFS: |
| break; |
| default: |
| return -EINVAL; |
| |
| } |
| |
| /* interface format */ |
| switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| case SND_SOC_DAIFMT_I2S: |
| iface_reg |= TLV320AIC23_FOR_I2S; |
| break; |
| case SND_SOC_DAIFMT_DSP_B: |
| iface_reg |= TLV320AIC23_FOR_DSP; |
| break; |
| case SND_SOC_DAIFMT_RIGHT_J: |
| break; |
| case SND_SOC_DAIFMT_LEFT_J: |
| iface_reg |= TLV320AIC23_FOR_LJUST; |
| break; |
| default: |
| return -EINVAL; |
| |
| } |
| |
| tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); |
| |
| return 0; |
| } |
| |
| static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
| int clk_id, unsigned int freq, int dir) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| struct aic23 *aic23 = container_of(codec, struct aic23, codec); |
| aic23->mclk = freq; |
| return 0; |
| } |
| |
| static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, |
| enum snd_soc_bias_level level) |
| { |
| u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; |
| |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| /* vref/mid, osc on, dac unmute */ |
| tlv320aic23_write(codec, TLV320AIC23_PWR, reg); |
| break; |
| case SND_SOC_BIAS_PREPARE: |
| break; |
| case SND_SOC_BIAS_STANDBY: |
| /* everything off except vref/vmid, */ |
| tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); |
| break; |
| case SND_SOC_BIAS_OFF: |
| /* everything off, dac mute, inactive */ |
| tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); |
| tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); |
| break; |
| } |
| codec->bias_level = level; |
| return 0; |
| } |
| |
| #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 |
| #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ |
| SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) |
| |
| static struct snd_soc_dai_ops tlv320aic23_dai_ops = { |
| .prepare = tlv320aic23_pcm_prepare, |
| .hw_params = tlv320aic23_hw_params, |
| .shutdown = tlv320aic23_shutdown, |
| .digital_mute = tlv320aic23_mute, |
| .set_fmt = tlv320aic23_set_dai_fmt, |
| .set_sysclk = tlv320aic23_set_dai_sysclk, |
| }; |
| |
| struct snd_soc_dai tlv320aic23_dai = { |
| .name = "tlv320aic23", |
| .playback = { |
| .stream_name = "Playback", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = AIC23_RATES, |
| .formats = AIC23_FORMATS,}, |
| .capture = { |
| .stream_name = "Capture", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = AIC23_RATES, |
| .formats = AIC23_FORMATS,}, |
| .ops = &tlv320aic23_dai_ops, |
| }; |
| EXPORT_SYMBOL_GPL(tlv320aic23_dai); |
| |
| static int tlv320aic23_suspend(struct platform_device *pdev, |
| pm_message_t state) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec = socdev->card->codec; |
| |
| tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); |
| tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| |
| return 0; |
| } |
| |
| static int tlv320aic23_resume(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec = socdev->card->codec; |
| int i; |
| u16 reg; |
| |
| /* Sync reg_cache with the hardware */ |
| for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) { |
| u16 val = tlv320aic23_read_reg_cache(codec, reg); |
| tlv320aic23_write(codec, reg, val); |
| } |
| |
| tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| tlv320aic23_set_bias_level(codec, codec->suspend_bias_level); |
| |
| return 0; |
| } |
| |
| /* |
| * initialise the AIC23 driver |
| * register the mixer and dsp interfaces with the kernel |
| */ |
| static int tlv320aic23_init(struct snd_soc_device *socdev) |
| { |
| struct snd_soc_codec *codec = socdev->card->codec; |
| int ret = 0; |
| u16 reg; |
| |
| codec->name = "tlv320aic23"; |
| codec->owner = THIS_MODULE; |
| codec->read = tlv320aic23_read_reg_cache; |
| codec->write = tlv320aic23_write; |
| codec->set_bias_level = tlv320aic23_set_bias_level; |
| codec->dai = &tlv320aic23_dai; |
| codec->num_dai = 1; |
| codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); |
| codec->reg_cache = |
| kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); |
| if (codec->reg_cache == NULL) |
| return -ENOMEM; |
| |
| /* Reset codec */ |
| tlv320aic23_write(codec, TLV320AIC23_RESET, 0); |
| |
| /* register pcms */ |
| ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| if (ret < 0) { |
| printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); |
| goto pcm_err; |
| } |
| |
| /* power on device */ |
| tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); |
| |
| /* Unmute input */ |
| reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); |
| tlv320aic23_write(codec, TLV320AIC23_LINVOL, |
| (reg & (~TLV320AIC23_LIM_MUTED)) | |
| (TLV320AIC23_LRS_ENABLED)); |
| |
| reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); |
| tlv320aic23_write(codec, TLV320AIC23_RINVOL, |
| (reg & (~TLV320AIC23_LIM_MUTED)) | |
| TLV320AIC23_LRS_ENABLED); |
| |
| reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); |
| tlv320aic23_write(codec, TLV320AIC23_ANLG, |
| (reg) & (~TLV320AIC23_BYPASS_ON) & |
| (~TLV320AIC23_MICM_MUTED)); |
| |
| /* Default output volume */ |
| tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, |
| TLV320AIC23_DEFAULT_OUT_VOL & |
| TLV320AIC23_OUT_VOL_MASK); |
| tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, |
| TLV320AIC23_DEFAULT_OUT_VOL & |
| TLV320AIC23_OUT_VOL_MASK); |
| |
| tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); |
| |
| snd_soc_add_controls(codec, tlv320aic23_snd_controls, |
| ARRAY_SIZE(tlv320aic23_snd_controls)); |
| tlv320aic23_add_widgets(codec); |
| ret = snd_soc_init_card(socdev); |
| if (ret < 0) { |
| printk(KERN_ERR "tlv320aic23: failed to register card\n"); |
| goto card_err; |
| } |
| |
| return ret; |
| |
| card_err: |
| snd_soc_free_pcms(socdev); |
| snd_soc_dapm_free(socdev); |
| pcm_err: |
| kfree(codec->reg_cache); |
| return ret; |
| } |
| static struct snd_soc_device *tlv320aic23_socdev; |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| /* |
| * If the i2c layer weren't so broken, we could pass this kind of data |
| * around |
| */ |
| static int tlv320aic23_codec_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *i2c_id) |
| { |
| struct snd_soc_device *socdev = tlv320aic23_socdev; |
| struct snd_soc_codec *codec = socdev->card->codec; |
| int ret; |
| |
| if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| return -EINVAL; |
| |
| i2c_set_clientdata(i2c, codec); |
| codec->control_data = i2c; |
| |
| ret = tlv320aic23_init(socdev); |
| if (ret < 0) { |
| printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); |
| goto err; |
| } |
| return ret; |
| |
| err: |
| kfree(codec); |
| kfree(i2c); |
| return ret; |
| } |
| static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) |
| { |
| put_device(&i2c->dev); |
| return 0; |
| } |
| |
| static const struct i2c_device_id tlv320aic23_id[] = { |
| {"tlv320aic23", 0}, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); |
| |
| static struct i2c_driver tlv320aic23_i2c_driver = { |
| .driver = { |
| .name = "tlv320aic23", |
| }, |
| .probe = tlv320aic23_codec_probe, |
| .remove = __exit_p(tlv320aic23_i2c_remove), |
| .id_table = tlv320aic23_id, |
| }; |
| |
| #endif |
| |
| static int tlv320aic23_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec; |
| struct aic23 *aic23; |
| int ret = 0; |
| |
| printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); |
| |
| aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); |
| if (aic23 == NULL) |
| return -ENOMEM; |
| codec = &aic23->codec; |
| socdev->card->codec = codec; |
| mutex_init(&codec->mutex); |
| INIT_LIST_HEAD(&codec->dapm_widgets); |
| INIT_LIST_HEAD(&codec->dapm_paths); |
| |
| tlv320aic23_socdev = socdev; |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| codec->hw_write = (hw_write_t) i2c_master_send; |
| codec->hw_read = NULL; |
| ret = i2c_add_driver(&tlv320aic23_i2c_driver); |
| if (ret != 0) |
| printk(KERN_ERR "can't add i2c driver"); |
| #endif |
| return ret; |
| } |
| |
| static int tlv320aic23_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec = socdev->card->codec; |
| struct aic23 *aic23 = container_of(codec, struct aic23, codec); |
| |
| if (codec->control_data) |
| tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| |
| snd_soc_free_pcms(socdev); |
| snd_soc_dapm_free(socdev); |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| i2c_del_driver(&tlv320aic23_i2c_driver); |
| #endif |
| kfree(codec->reg_cache); |
| kfree(aic23); |
| |
| return 0; |
| } |
| struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { |
| .probe = tlv320aic23_probe, |
| .remove = tlv320aic23_remove, |
| .suspend = tlv320aic23_suspend, |
| .resume = tlv320aic23_resume, |
| }; |
| EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); |
| |
| static int __init tlv320aic23_modinit(void) |
| { |
| return snd_soc_register_dai(&tlv320aic23_dai); |
| } |
| module_init(tlv320aic23_modinit); |
| |
| static void __exit tlv320aic23_exit(void) |
| { |
| snd_soc_unregister_dai(&tlv320aic23_dai); |
| } |
| module_exit(tlv320aic23_exit); |
| |
| MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); |
| MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); |
| MODULE_LICENSE("GPL"); |
