diff options
Diffstat (limited to 'sound/soc/codecs/sta32x.c')
| -rw-r--r-- | sound/soc/codecs/sta32x.c | 917 |
1 files changed, 917 insertions, 0 deletions
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c new file mode 100644 index 000000000000..409d89d1f34c --- /dev/null +++ b/sound/soc/codecs/sta32x.c @@ -0,0 +1,917 @@ +/* + * Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system + * + * Copyright: 2011 Raumfeld GmbH + * Author: Johannes Stezenbach <js@sig21.net> + * + * based on code from: + * Wolfson Microelectronics PLC. + * Mark Brown <broonie@opensource.wolfsonmicro.com> + * Freescale Semiconductor, Inc. + * Timur Tabi <timur@freescale.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__ + +#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 <linux/regulator/consumer.h> +#include <linux/slab.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/initval.h> +#include <sound/tlv.h> + +#include "sta32x.h" + +#define STA32X_RATES (SNDRV_PCM_RATE_32000 | \ + SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | \ + SNDRV_PCM_RATE_88200 | \ + SNDRV_PCM_RATE_96000 | \ + SNDRV_PCM_RATE_176400 | \ + SNDRV_PCM_RATE_192000) + +#define STA32X_FORMATS \ + (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \ + SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \ + SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \ + SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \ + SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE) + +/* Power-up register defaults */ +static const u8 sta32x_regs[STA32X_REGISTER_COUNT] = { + 0x63, 0x80, 0xc2, 0x40, 0xc2, 0x5c, 0x10, 0xff, 0x60, 0x60, + 0x60, 0x80, 0x00, 0x00, 0x00, 0x40, 0x80, 0x77, 0x6a, 0x69, + 0x6a, 0x69, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2d, + 0xc0, 0xf3, 0x33, 0x00, 0x0c, +}; + +/* regulator power supply names */ +static const char *sta32x_supply_names[] = { + "Vdda", /* analog supply, 3.3VV */ + "Vdd3", /* digital supply, 3.3V */ + "Vcc" /* power amp spply, 10V - 36V */ +}; + +/* codec private data */ +struct sta32x_priv { + struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)]; + struct snd_soc_codec *codec; + + unsigned int mclk; + unsigned int format; +}; + +static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1); +static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1); +static const DECLARE_TLV_DB_SCALE(tone_tlv, -120, 200, 0); + +static const char *sta32x_drc_ac[] = { + "Anti-Clipping", "Dynamic Range Compression" }; +static const char *sta32x_auto_eq_mode[] = { + "User", "Preset", "Loudness" }; +static const char *sta32x_auto_gc_mode[] = { + "User", "AC no clipping", "AC limited clipping (10%)", + "DRC nighttime listening mode" }; +static const char *sta32x_auto_xo_mode[] = { + "User", "80Hz", "100Hz", "120Hz", "140Hz", "160Hz", "180Hz", "200Hz", + "220Hz", "240Hz", "260Hz", "280Hz", "300Hz", "320Hz", "340Hz", "360Hz" }; +static const char *sta32x_preset_eq_mode[] = { + "Flat", "Rock", "Soft Rock", "Jazz", "Classical", "Dance", "Pop", "Soft", + "Hard", "Party", "Vocal", "Hip-Hop", "Dialog", "Bass-boost #1", + "Bass-boost #2", "Bass-boost #3", "Loudness 1", "Loudness 2", + "Loudness 3", "Loudness 4", "Loudness 5", "Loudness 6", "Loudness 7", + "Loudness 8", "Loudness 9", "Loudness 10", "Loudness 11", "Loudness 12", + "Loudness 13", "Loudness 14", "Loudness 15", "Loudness 16" }; +static const char *sta32x_limiter_select[] = { + "Limiter Disabled", "Limiter #1", "Limiter #2" }; +static const char *sta32x_limiter_attack_rate[] = { + "3.1584", "2.7072", "2.2560", "1.8048", "1.3536", "0.9024", + "0.4512", "0.2256", "0.1504", "0.1123", "0.0902", "0.0752", + "0.0645", "0.0564", "0.0501", "0.0451" }; +static const char *sta32x_limiter_release_rate[] = { + "0.5116", "0.1370", "0.0744", "0.0499", "0.0360", "0.0299", + "0.0264", "0.0208", "0.0198", "0.0172", "0.0147", "0.0137", + "0.0134", "0.0117", "0.0110", "0.0104" }; + +static const unsigned int sta32x_limiter_ac_attack_tlv[] = { + TLV_DB_RANGE_HEAD(2), + 0, 7, TLV_DB_SCALE_ITEM(-1200, 200, 0), + 8, 16, TLV_DB_SCALE_ITEM(300, 100, 0), +}; + +static const unsigned int sta32x_limiter_ac_release_tlv[] = { + TLV_DB_RANGE_HEAD(5), + 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0), + 1, 1, TLV_DB_SCALE_ITEM(-2900, 0, 0), + 2, 2, TLV_DB_SCALE_ITEM(-2000, 0, 0), + 3, 8, TLV_DB_SCALE_ITEM(-1400, 200, 0), + 8, 16, TLV_DB_SCALE_ITEM(-700, 100, 0), +}; + +static const unsigned int sta32x_limiter_drc_attack_tlv[] = { + TLV_DB_RANGE_HEAD(3), + 0, 7, TLV_DB_SCALE_ITEM(-3100, 200, 0), + 8, 13, TLV_DB_SCALE_ITEM(-1600, 100, 0), + 14, 16, TLV_DB_SCALE_ITEM(-1000, 300, 0), +}; + +static const unsigned int sta32x_limiter_drc_release_tlv[] = { + TLV_DB_RANGE_HEAD(5), + 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0), + 1, 2, TLV_DB_SCALE_ITEM(-3800, 200, 0), + 3, 4, TLV_DB_SCALE_ITEM(-3300, 200, 0), + 5, 12, TLV_DB_SCALE_ITEM(-3000, 200, 0), + 13, 16, TLV_DB_SCALE_ITEM(-1500, 300, 0), +}; + +static const struct soc_enum sta32x_drc_ac_enum = + SOC_ENUM_SINGLE(STA32X_CONFD, STA32X_CONFD_DRC_SHIFT, + 2, sta32x_drc_ac); +static const struct soc_enum sta32x_auto_eq_enum = + SOC_ENUM_SINGLE(STA32X_AUTO1, STA32X_AUTO1_AMEQ_SHIFT, + 3, sta32x_auto_eq_mode); +static const struct soc_enum sta32x_auto_gc_enum = + SOC_ENUM_SINGLE(STA32X_AUTO1, STA32X_AUTO1_AMGC_SHIFT, + 4, sta32x_auto_gc_mode); +static const struct soc_enum sta32x_auto_xo_enum = + SOC_ENUM_SINGLE(STA32X_AUTO2, STA32X_AUTO2_XO_SHIFT, + 16, sta32x_auto_xo_mode); +static const struct soc_enum sta32x_preset_eq_enum = + SOC_ENUM_SINGLE(STA32X_AUTO3, STA32X_AUTO3_PEQ_SHIFT, + 32, sta32x_preset_eq_mode); +static const struct soc_enum sta32x_limiter_ch1_enum = + SOC_ENUM_SINGLE(STA32X_C1CFG, STA32X_CxCFG_LS_SHIFT, + 3, sta32x_limiter_select); +static const struct soc_enum sta32x_limiter_ch2_enum = + SOC_ENUM_SINGLE(STA32X_C2CFG, STA32X_CxCFG_LS_SHIFT, + 3, sta32x_limiter_select); +static const struct soc_enum sta32x_limiter_ch3_enum = + SOC_ENUM_SINGLE(STA32X_C3CFG, STA32X_CxCFG_LS_SHIFT, + 3, sta32x_limiter_select); +static const struct soc_enum sta32x_limiter1_attack_rate_enum = + SOC_ENUM_SINGLE(STA32X_L1AR, STA32X_LxA_SHIFT, + 16, sta32x_limiter_attack_rate); +static const struct soc_enum sta32x_limiter2_attack_rate_enum = + SOC_ENUM_SINGLE(STA32X_L2AR, STA32X_LxA_SHIFT, + 16, sta32x_limiter_attack_rate); +static const struct soc_enum sta32x_limiter1_release_rate_enum = + SOC_ENUM_SINGLE(STA32X_L1AR, STA32X_LxR_SHIFT, + 16, sta32x_limiter_release_rate); +static const struct soc_enum sta32x_limiter2_release_rate_enum = + SOC_ENUM_SINGLE(STA32X_L2AR, STA32X_LxR_SHIFT, + 16, sta32x_limiter_release_rate); + +/* byte array controls for setting biquad, mixer, scaling coefficients; + * for biquads all five coefficients need to be set in one go, + * mixer and pre/postscale coefs can be set individually; + * each coef is 24bit, the bytes are ordered in the same way + * as given in the STA32x data sheet (big endian; b1, b2, a1, a2, b0) + */ + +static int sta32x_coefficient_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + int numcoef = kcontrol->private_value >> 16; + uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; + uinfo->count = 3 * numcoef; + return 0; +} + +static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + int numcoef = kcontrol->private_value >> 16; + int index = kcontrol->private_value & 0xffff; + unsigned int cfud; + int i; + + /* preserve reserved bits in STA32X_CFUD */ + cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0; + /* chip documentation does not say if the bits are self clearing, + * so do it explicitly */ + snd_soc_write(codec, STA32X_CFUD, cfud); + + snd_soc_write(codec, STA32X_CFADDR2, index); + if (numcoef == 1) + snd_soc_write(codec, STA32X_CFUD, cfud | 0x04); + else if (numcoef == 5) + snd_soc_write(codec, STA32X_CFUD, cfud | 0x08); + else + return -EINVAL; + for (i = 0; i < 3 * numcoef; i++) + ucontrol->value.bytes.data[i] = + snd_soc_read(codec, STA32X_B1CF1 + i); + + return 0; +} + +static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + int numcoef = kcontrol->private_value >> 16; + int index = kcontrol->private_value & 0xffff; + unsigned int cfud; + int i; + + /* preserve reserved bits in STA32X_CFUD */ + cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0; + /* chip documentation does not say if the bits are self clearing, + * so do it explicitly */ + snd_soc_write(codec, STA32X_CFUD, cfud); + + snd_soc_write(codec, STA32X_CFADDR2, index); + for (i = 0; i < 3 * numcoef; i++) + snd_soc_write(codec, STA32X_B1CF1 + i, + ucontrol->value.bytes.data[i]); + if (numcoef == 1) + snd_soc_write(codec, STA32X_CFUD, cfud | 0x01); + else if (numcoef == 5) + snd_soc_write(codec, STA32X_CFUD, cfud | 0x02); + else + return -EINVAL; + + return 0; +} + +#define SINGLE_COEF(xname, index) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ + .info = sta32x_coefficient_info, \ + .get = sta32x_coefficient_get,\ + .put = sta32x_coefficient_put, \ + .private_value = index | (1 << 16) } + +#define BIQUAD_COEFS(xname, index) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ + .info = sta32x_coefficient_info, \ + .get = sta32x_coefficient_get,\ + .put = sta32x_coefficient_put, \ + .private_value = index | (5 << 16) } + +static const struct snd_kcontrol_new sta32x_snd_controls[] = { +SOC_SINGLE_TLV("Master Volume", STA32X_MVOL, 0, 0xff, 1, mvol_tlv), +SOC_SINGLE("Master Switch", STA32X_MMUTE, 0, 1, 1), +SOC_SINGLE("Ch1 Switch", STA32X_MMUTE, 1, 1, 1), +SOC_SINGLE("Ch2 Switch", STA32X_MMUTE, 2, 1, 1), +SOC_SINGLE("Ch3 Switch", STA32X_MMUTE, 3, 1, 1), +SOC_SINGLE_TLV("Ch1 Volume", STA32X_C1VOL, 0, 0xff, 1, chvol_tlv), +SOC_SINGLE_TLV("Ch2 Volume", STA32X_C2VOL, 0, 0xff, 1, chvol_tlv), +SOC_SINGLE_TLV("Ch3 Volume", STA32X_C3VOL, 0, 0xff, 1, chvol_tlv), +SOC_SINGLE("De-emphasis Filter Switch", STA32X_CONFD, STA32X_CONFD_DEMP_SHIFT, 1, 0), +SOC_ENUM("Compressor/Limiter Switch", sta32x_drc_ac_enum), +SOC_SINGLE("Miami Mode Switch", STA32X_CONFD, STA32X_CONFD_MME_SHIFT, 1, 0), +SOC_SINGLE("Zero Cross Switch", STA32X_CONFE, STA32X_CONFE_ZCE_SHIFT, 1, 0), +SOC_SINGLE("Soft Ramp Switch", STA32X_CONFE, STA32X_CONFE_SVE_SHIFT, 1, 0), +SOC_SINGLE("Auto-Mute Switch", STA32X_CONFF, STA32X_CONFF_IDE_SHIFT, 1, 0), +SOC_ENUM("Automode EQ", sta32x_auto_eq_enum), +SOC_ENUM("Automode GC", sta32x_auto_gc_enum), +SOC_ENUM("Automode XO", sta32x_auto_xo_enum), +SOC_ENUM("Preset EQ", sta32x_preset_eq_enum), +SOC_SINGLE("Ch1 Tone Control Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0), +SOC_SINGLE("Ch2 Tone Control Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0), +SOC_SINGLE("Ch1 EQ Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0), +SOC_SINGLE("Ch2 EQ Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0), +SOC_SINGLE("Ch1 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0), +SOC_SINGLE("Ch2 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0), +SOC_SINGLE("Ch3 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0), +SOC_ENUM("Ch1 Limiter Select", sta32x_limiter_ch1_enum), +SOC_ENUM("Ch2 Limiter Select", sta32x_limiter_ch2_enum), +SOC_ENUM("Ch3 Limiter Select", sta32x_limiter_ch3_enum), +SOC_SINGLE_TLV("Bass Tone Control", STA32X_TONE, STA32X_TONE_BTC_SHIFT, 15, 0, tone_tlv), +SOC_SINGLE_TLV("Treble Tone Control", STA32X_TONE, STA32X_TONE_TTC_SHIFT, 15, 0, tone_tlv), +SOC_ENUM("Limiter1 Attack Rate (dB/ms)", sta32x_limiter1_attack_rate_enum), +SOC_ENUM("Limiter2 Attack Rate (dB/ms)", sta32x_limiter2_attack_rate_enum), +SOC_ENUM("Limiter1 Release Rate (dB/ms)", sta32x_limiter1_release_rate_enum), +SOC_ENUM("Limiter2 Release Rate (dB/ms)", sta32x_limiter1_release_rate_enum), + +/* depending on mode, the attack/release thresholds have + * two different enum definitions; provide both + */ +SOC_SINGLE_TLV("Limiter1 Attack Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT, + 16, 0, sta32x_limiter_ac_attack_tlv), +SOC_SINGLE_TLV("Limiter2 Attack Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT, + 16, 0, sta32x_limiter_ac_attack_tlv), +SOC_SINGLE_TLV("Limiter1 Release Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT, + 16, 0, sta32x_limiter_ac_release_tlv), +SOC_SINGLE_TLV("Limiter2 Release Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT, + 16, 0, sta32x_limiter_ac_release_tlv), +SOC_SINGLE_TLV("Limiter1 Attack Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT, + 16, 0, sta32x_limiter_drc_attack_tlv), +SOC_SINGLE_TLV("Limiter2 Attack Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT, + 16, 0, sta32x_limiter_drc_attack_tlv), +SOC_SINGLE_TLV("Limiter1 Release Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT, + 16, 0, sta32x_limiter_drc_release_tlv), +SOC_SINGLE_TLV("Limiter2 Release Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT, + 16, 0, sta32x_limiter_drc_release_tlv), + +BIQUAD_COEFS("Ch1 - Biquad 1", 0), +BIQUAD_COEFS("Ch1 - Biquad 2", 5), +BIQUAD_COEFS("Ch1 - Biquad 3", 10), +BIQUAD_COEFS("Ch1 - Biquad 4", 15), +BIQUAD_COEFS("Ch2 - Biquad 1", 20), +BIQUAD_COEFS("Ch2 - Biquad 2", 25), +BIQUAD_COEFS("Ch2 - Biquad 3", 30), +BIQUAD_COEFS("Ch2 - Biquad 4", 35), +BIQUAD_COEFS("High-pass", 40), +BIQUAD_COEFS("Low-pass", 45), +SINGLE_COEF("Ch1 - Prescale", 50), +SINGLE_COEF("Ch2 - Prescale", 51), +SINGLE_COEF("Ch1 - Postscale", 52), +SINGLE_COEF("Ch2 - Postscale", 53), +SINGLE_COEF("Ch3 - Postscale", 54), +SINGLE_COEF("Thermal warning - Postscale", 55), +SINGLE_COEF("Ch1 - Mix 1", 56), +SINGLE_COEF("Ch1 - Mix 2", 57), +SINGLE_COEF("Ch2 - Mix 1", 58), +SINGLE_COEF("Ch2 - Mix 2", 59), +SINGLE_COEF("Ch3 - Mix 1", 60), +SINGLE_COEF("Ch3 - Mix 2", 61), +}; + +static const struct snd_soc_dapm_widget sta32x_dapm_widgets[] = { +SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0), +SND_SOC_DAPM_OUTPUT("LEFT"), +SND_SOC_DAPM_OUTPUT("RIGHT"), +SND_SOC_DAPM_OUTPUT("SUB"), +}; + +static const struct snd_soc_dapm_route sta32x_dapm_routes[] = { + { "LEFT", NULL, "DAC" }, + { "RIGHT", NULL, "DAC" }, + { "SUB", NULL, "DAC" }, +}; + +/* MCLK interpolation ratio per fs */ +static struct { + int fs; + int ir; +} interpolation_ratios[] = { + { 32000, 0 }, + { 44100, 0 }, + { 48000, 0 }, + { 88200, 1 }, + { 96000, 1 }, + { 176400, 2 }, + { 192000, 2 }, +}; + +/* MCLK to fs clock ratios */ +static struct { + int ratio; + int mcs; +} mclk_ratios[3][7] = { + { { 768, 0 }, { 512, 1 }, { 384, 2 }, { 256, 3 }, + { 128, 4 }, { 576, 5 }, { 0, 0 } }, + { { 384, 2 }, { 256, 3 }, { 192, 4 }, { 128, 5 }, {64, 0 }, { 0, 0 } }, + { { 384, 2 }, { 256, 3 }, { 192, 4 }, { 128, 5 }, {64, 0 }, { 0, 0 } }, +}; + + +/** + * sta32x_set_dai_sysclk - configure MCLK + * @codec_dai: the codec DAI + * @clk_id: the clock ID (ignored) + * @freq: the MCLK input frequency + * @dir: the clock direction (ignored) + * + * The value of MCLK is used to determine which sample rates are supported + * by the STA32X, based on the mclk_ratios table. + * + * This function must be called by the machine driver's 'startup' function, + * otherwise the list of supported sample rates will not be available in + * time for ALSA. + * + * For setups with variable MCLKs, pass 0 as 'freq' argument. This will cause + * theoretically possible sample rates to be enabled. Call it again with a + * proper value set one the external clock is set (most probably you would do + * that from a machine's driver 'hw_param' hook. + */ +static int sta32x_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 sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); + int i, j, ir, fs; + unsigned int rates = 0; + unsigned int rate_min = -1; + unsigned int rate_max = 0; + + pr_debug("mclk=%u\n", freq); + sta32x->mclk = freq; + + if (sta32x->mclk) { + for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) { + ir = interpolation_ratios[i].ir; + fs = interpolation_ratios[i].fs; + for (j = 0; mclk_ratios[ir][j].ratio; j++) { + if (mclk_ratios[ir][j].ratio * fs == freq) { + rates |= snd_pcm_rate_to_rate_bit(fs); + if (fs < rate_min) + rate_min = fs; + if (fs > rate_max) + rate_max = fs; + } + } + } + /* FIXME: soc should support a rate list */ + rates &= ~SNDRV_PCM_RATE_KNOT; + + if (!rates) { + dev_err(codec->dev, "could not find a valid sample rate\n"); + return -EINVAL; + } + } else { + /* enable all possible rates */ + rates = STA32X_RATES; + rate_min = 32000; + rate_max = 192000; + } + + codec_dai->driver->playback.rates = rates; + codec_dai->driver->playback.rate_min = rate_min; + codec_dai->driver->playback.rate_max = rate_max; + return 0; +} + +/** + * sta32x_set_dai_fmt - configure the codec for the selected audio format + * @codec_dai: the codec DAI + * @fmt: a SND_SOC_DAIFMT_x value indicating the data format + * + * This function takes a bitmask of SND_SOC_DAIFMT_x bits and programs the + * codec accordingly. + */ +static int sta32x_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); + u8 confb = snd_soc_read(codec, STA32X_CONFB); + + pr_debug("\n"); + confb &= ~(STA32X_CONFB_C1IM | STA32X_CONFB_C2IM); + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + case SND_SOC_DAIFMT_RIGHT_J: + case SND_SOC_DAIFMT_LEFT_J: + sta32x->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + confb |= STA32X_CONFB_C2IM; + break; + case SND_SOC_DAIFMT_NB_IF: + confb |= STA32X_CONFB_C1IM; + break; + default: + return -EINVAL; + } + + snd_soc_write(codec, STA32X_CONFB, confb); + return 0; +} + +/** + * sta32x_hw_params - program the STA32X with the given hardware parameters. + * @substream: the audio stream + * @params: the hardware parameters to set + * @dai: the SOC DAI (ignored) + * + * This function programs the hardware with the values provided. + * Specifically, the sample rate and the data format. + */ +static int sta32x_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_codec *codec = rtd->codec; + struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); + unsigned int rate; + int i, mcs = -1, ir = -1; + u8 confa, confb; + + rate = params_rate(params); + pr_debug("rate: %u\n", rate); + for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) + if (interpolation_ratios[i].fs == rate) + ir = interpolation_ratios[i].ir; + if (ir < 0) + return -EINVAL; + for (i = 0; mclk_ratios[ir][i].ratio; i++) + if (mclk_ratios[ir][i].ratio * rate == sta32x->mclk) + mcs = mclk_ratios[ir][i].mcs; + if (mcs < 0) + return -EINVAL; + + confa = snd_soc_read(codec, STA32X_CONFA); + confa &= ~(STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK); + confa |= (ir << STA32X_CONFA_IR_SHIFT) | (mcs << STA32X_CONFA_MCS_SHIFT); + + confb = snd_soc_read(codec, STA32X_CONFB); + confb &= ~(STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB); + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S24_LE: + case SNDRV_PCM_FORMAT_S24_BE: + case SNDRV_PCM_FORMAT_S24_3LE: + case SNDRV_PCM_FORMAT_S24_3BE: + pr_debug("24bit\n"); + /* fall through */ + case SNDRV_PCM_FORMAT_S32_LE: + case SNDRV_PCM_FORMAT_S32_BE: + pr_debug("24bit or 32bit\n"); + switch (sta32x->format) { + case SND_SOC_DAIFMT_I2S: + confb |= 0x0; + break; + case SND_SOC_DAIFMT_LEFT_J: + confb |= 0x1; + break; + case SND_SOC_DAIFMT_RIGHT_J: + confb |= 0x2; + break; + } + + break; + case SNDRV_PCM_FORMAT_S20_3LE: + case SNDRV_PCM_FORMAT_S20_3BE: + pr_debug("20bit\n"); + switch (sta32x->format) { + case SND_SOC_DAIFMT_I2S: + confb |= 0x4; + break; + case SND_SOC_DAIFMT_LEFT_J: + confb |= 0x5; + break; + case SND_SOC_DAIFMT_RIGHT_J: + confb |= 0x6; + break; + } + + break; + case SNDRV_PCM_FORMAT_S18_3LE: + case SNDRV_PCM_FORMAT_S18_3BE: + pr_debug("18bit\n"); + switch (sta32x->format) { + case SND_SOC_DAIFMT_I2S: + confb |= 0x8; + break; + case SND_SOC_DAIFMT_LEFT_J: + confb |= 0x9; + break; + case SND_SOC_DAIFMT_RIGHT_J: + confb |= 0xa; + break; + } + + break; + case SNDRV_PCM_FORMAT_S16_LE: + case SNDRV_PCM_FORMAT_S16_BE: + pr_debug("16bit\n"); + switch (sta32x->format) { + case SND_SOC_DAIFMT_I2S: + confb |= 0x0; + break; + case SND_SOC_DAIFMT_LEFT_J: + confb |= 0xd; + break; + case SND_SOC_DAIFMT_RIGHT_J: + confb |= 0xe; + break; + } + + break; + default: + return -EINVAL; + } + + snd_soc_write(codec, STA32X_CONFA, confa); + snd_soc_write(codec, STA32X_CONFB, confb); + return 0; +} + +/** + * sta32x_set_bias_level - DAPM callback + * @codec: the codec device + * @level: DAPM power level + * + * This is called by ALSA to put the codec into low power mode + * or to wake it up. If the codec is powered off completely + * all registers must be restored after power on. + */ +static int sta32x_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + int ret; + struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); + + pr_debug("level = %d\n", level); + switch (level) { + case SND_SOC_BIAS_ON: + break; + + case SND_SOC_BIAS_PREPARE: + /* Full power on */ + snd_soc_update_bits(codec, STA32X_CONFF, + STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, + STA32X_CONFF_PWDN | STA32X_CONFF_EAPD); + break; + + case SND_SOC_BIAS_STANDBY: + if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { + ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies), + sta32x->supplies); + if (ret != 0) { + dev_err(codec->dev, + "Failed to enable supplies: %d\n", ret); + return ret; + } + + snd_soc_cache_sync(codec); + } + + /* Power up to mute */ + /* FIXME */ + snd_soc_update_bits(codec, STA32X_CONFF, + STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, + STA32X_CONFF_PWDN | STA32X_CONFF_EAPD); + + break; + + case SND_SOC_BIAS_OFF: + /* The chip runs through the power down sequence for us. */ + snd_soc_update_bits(codec, STA32X_CONFF, + STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, + STA32X_CONFF_PWDN); + msleep(300); + + regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), + sta32x->supplies); + break; + } + codec->dapm.bias_level = level; + return 0; +} + +static struct snd_soc_dai_ops sta32x_dai_ops = { + .hw_params = sta32x_hw_params, + .set_sysclk = sta32x_set_dai_sysclk, + .set_fmt = sta32x_set_dai_fmt, +}; + +static struct snd_soc_dai_driver sta32x_dai = { + .name = "STA32X", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = STA32X_RATES, + .formats = STA32X_FORMATS, + }, + .ops = &sta32x_dai_ops, +}; + +#ifdef CONFIG_PM +static int sta32x_suspend(struct snd_soc_codec *codec, pm_message_t state) +{ + sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF); + return 0; +} + +static int sta32x_resume(struct snd_soc_codec *codec) +{ + sta32x_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + return 0; +} +#else +#define sta32x_suspend NULL +#define sta32x_resume NULL +#endif + +static int sta32x_probe(struct snd_soc_codec *codec) +{ + struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); + int i, ret = 0; + + sta32x->codec = codec; + + /* regulators */ + for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++) + sta32x->supplies[i].supply = sta32x_supply_names[i]; + + ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sta32x->supplies), + sta32x->supplies); + if (ret != 0) { + dev_err(codec->dev, "Failed to request supplies: %d\n", ret); + goto err; + } + + ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies), + sta32x->supplies); + if (ret != 0) { + dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); + goto err_get; + } + + /* Tell ASoC what kind of I/O to use to read the registers. ASoC will + * then do the I2C transactions itself. + */ + ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C); + if (ret < 0) { + dev_err(codec->dev, "failed to set cache I/O (ret=%i)\n", ret); + return ret; + } + + /* read reg reset values into cache */ + for (i = 0; i < STA32X_REGISTER_COUNT; i++) + snd_soc_cache_write(codec, i, sta32x_regs[i]); + + /* preserve reset values of reserved register bits */ + snd_soc_cache_write(codec, STA32X_CONFC, + codec->hw_read(codec, STA32X_CONFC)); + snd_soc_cache_write(codec, STA32X_CONFE, + codec->hw_read(codec, STA32X_CONFE)); + snd_soc_cache_write(codec, STA32X_CONFF, + codec->hw_read(codec, STA32X_CONFF)); + snd_soc_cache_write(codec, STA32X_MMUTE, + codec->hw_read(codec, STA32X_MMUTE)); + snd_soc_cache_write(codec, STA32X_AUTO1, + codec->hw_read(codec, STA32X_AUTO1)); + snd_soc_cache_write(codec, STA32X_AUTO3, + codec->hw_read(codec, STA32X_AUTO3)); + snd_soc_cache_write(codec, STA32X_C3CFG, + codec->hw_read(codec, STA32X_C3CFG)); + + /* FIXME enable thermal warning adjustment and recovery */ + snd_soc_update_bits(codec, STA32X_CONFA, + STA32X_CONFA_TWAB | STA32X_CONFA_TWRB, 0); + + /* FIXME select 2.1 mode */ + snd_soc_update_bits(codec, STA32X_CONFF, + STA32X_CONFF_OCFG_MASK, + 1 << STA32X_CONFF_OCFG_SHIFT); + + /* FIXME channel to output mapping */ + snd_soc_update_bits(codec, STA32X_C1CFG, + STA32X_CxCFG_OM_MASK, + 0 << STA32X_CxCFG_OM_SHIFT); + snd_soc_update_bits(codec, STA32X_C2CFG, + STA32X_CxCFG_OM_MASK, + 1 << STA32X_CxCFG_OM_SHIFT); + snd_soc_update_bits(codec, STA32X_C3CFG, + STA32X_CxCFG_OM_MASK, + 2 << STA32X_CxCFG_OM_SHIFT); + + sta32x_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + /* Bias level configuration will have done an extra enable */ + regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); + + return 0; + +err_get: + regulator_bulk_free(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); +err: + return ret; +} + +static int sta32x_remove(struct snd_soc_codec *codec) +{ + struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); + + regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); + regulator_bulk_free(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); + + return 0; +} + +static int sta32x_reg_is_volatile(struct snd_soc_codec *codec, + unsigned int reg) +{ + switch (reg) { + case STA32X_CONFA ... STA32X_L2ATRT: + case STA32X_MPCC1 ... STA32X_FDRC2: + return 0; + } + return 1; +} + +static const struct snd_soc_codec_driver sta32x_codec = { + .probe = sta32x_probe, + .remove = sta32x_remove, + .suspend = sta32x_suspend, + .resume = sta32x_resume, + .reg_cache_size = STA32X_REGISTER_COUNT, + .reg_word_size = sizeof(u8), + .volatile_register = sta32x_reg_is_volatile, + .set_bias_level = sta32x_set_bias_level, + .controls = sta32x_snd_controls, + .num_controls = ARRAY_SIZE(sta32x_snd_controls), + .dapm_widgets = sta32x_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(sta32x_dapm_widgets), + .dapm_routes = sta32x_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(sta32x_dapm_routes), +}; + +static __devinit int sta32x_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct sta32x_priv *sta32x; + int ret; + + sta32x = kzalloc(sizeof(struct sta32x_priv), GFP_KERNEL); + if (!sta32x) + return -ENOMEM; + + i2c_set_clientdata(i2c, sta32x); + + ret = snd_soc_register_codec(&i2c->dev, &sta32x_codec, &sta32x_dai, 1); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to register codec (%d)\n", ret); + return ret; + } + + return 0; +} + +static __devexit int sta32x_i2c_remove(struct i2c_client *client) +{ + struct sta32x_priv *sta32x = i2c_get_clientdata(client); + struct snd_soc_codec *codec = sta32x->codec; + + if (codec) + sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF); + + regulator_bulk_free(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); + + if (codec) { + snd_soc_unregister_codec(&client->dev); + snd_soc_codec_set_drvdata(codec, NULL); + } + + kfree(sta32x); + return 0; +} + +static const struct i2c_device_id sta32x_i2c_id[] = { + { "sta326", 0 }, + { "sta328", 0 }, + { "sta329", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, sta32x_i2c_id); + +static struct i2c_driver sta32x_i2c_driver = { + .driver = { + .name = "sta32x", + .owner = THIS_MODULE, + }, + .probe = sta32x_i2c_probe, + .remove = __devexit_p(sta32x_i2c_remove), + .id_table = sta32x_i2c_id, +}; + +static int __init sta32x_init(void) +{ + return i2c_add_driver(&sta32x_i2c_driver); +} +module_init(sta32x_init); + +static void __exit sta32x_exit(void) +{ + i2c_del_driver(&sta32x_i2c_driver); +} +module_exit(sta32x_exit); + +MODULE_DESCRIPTION("ASoC STA32X driver"); +MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>"); +MODULE_LICENSE("GPL"); |