| /* |
| * File: sound/soc/codecs/ssm2602.c |
| * Author: Cliff Cai <Cliff.Cai@analog.com> |
| * |
| * Created: Tue June 06 2008 |
| * Description: Driver for ssm2602 sound chip |
| * |
| * Modified: |
| * Copyright 2008 Analog Devices Inc. |
| * |
| * Bugs: Enter bugs at http://blackfin.uclinux.org/ |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see the file COPYING, or write |
| * to the Free Software Foundation, Inc., |
| * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #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/initval.h> |
| |
| #include "ssm2602.h" |
| |
| #define AUDIO_NAME "ssm2602" |
| #define SSM2602_VERSION "0.1" |
| |
| struct snd_soc_codec_device soc_codec_dev_ssm2602; |
| |
| /* codec private data */ |
| struct ssm2602_priv { |
| unsigned int sysclk; |
| struct snd_pcm_substream *master_substream; |
| struct snd_pcm_substream *slave_substream; |
| }; |
| |
| /* |
| * ssm2602 register cache |
| * We can't read the ssm2602 register space when we are |
| * using 2 wire for device control, so we cache them instead. |
| * There is no point in caching the reset register |
| */ |
| static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = { |
| 0x0017, 0x0017, 0x0079, 0x0079, |
| 0x0000, 0x0000, 0x0000, 0x000a, |
| 0x0000, 0x0000 |
| }; |
| |
| /* |
| * read ssm2602 register cache |
| */ |
| static inline unsigned int ssm2602_read_reg_cache(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| u16 *cache = codec->reg_cache; |
| if (reg == SSM2602_RESET) |
| return 0; |
| if (reg >= SSM2602_CACHEREGNUM) |
| return -1; |
| return cache[reg]; |
| } |
| |
| /* |
| * write ssm2602 register cache |
| */ |
| static inline void ssm2602_write_reg_cache(struct snd_soc_codec *codec, |
| u16 reg, unsigned int value) |
| { |
| u16 *cache = codec->reg_cache; |
| if (reg >= SSM2602_CACHEREGNUM) |
| return; |
| cache[reg] = value; |
| } |
| |
| /* |
| * write to the ssm2602 register space |
| */ |
| static int ssm2602_write(struct snd_soc_codec *codec, unsigned int reg, |
| unsigned int value) |
| { |
| u8 data[2]; |
| |
| /* data is |
| * D15..D9 ssm2602 register offset |
| * D8...D0 register data |
| */ |
| data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| data[1] = value & 0x00ff; |
| |
| ssm2602_write_reg_cache(codec, reg, value); |
| if (codec->hw_write(codec->control_data, data, 2) == 2) |
| return 0; |
| else |
| return -EIO; |
| } |
| |
| #define ssm2602_reset(c) ssm2602_write(c, SSM2602_RESET, 0) |
| |
| /*Appending several "None"s just for OSS mixer use*/ |
| static const char *ssm2602_input_select[] = { |
| "Line", "Mic", "None", "None", "None", |
| "None", "None", "None", |
| }; |
| |
| static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; |
| |
| static const struct soc_enum ssm2602_enum[] = { |
| SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select), |
| SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph), |
| }; |
| |
| static const struct snd_kcontrol_new ssm2602_snd_controls[] = { |
| |
| SOC_DOUBLE_R("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V, |
| 0, 127, 0), |
| SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V, |
| 7, 1, 0), |
| |
| SOC_DOUBLE_R("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 31, 0), |
| SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1), |
| |
| SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0), |
| SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1), |
| |
| SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1), |
| |
| SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1), |
| SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0), |
| |
| SOC_ENUM("Capture Source", ssm2602_enum[0]), |
| |
| SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]), |
| }; |
| |
| /* add non dapm controls */ |
| static int ssm2602_add_controls(struct snd_soc_codec *codec) |
| { |
| int err, i; |
| |
| for (i = 0; i < ARRAY_SIZE(ssm2602_snd_controls); i++) { |
| err = snd_ctl_add(codec->card, |
| snd_soc_cnew(&ssm2602_snd_controls[i], codec, NULL)); |
| if (err < 0) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| /* Output Mixer */ |
| static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = { |
| SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0), |
| SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0), |
| SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0), |
| }; |
| |
| /* Input mux */ |
| static const struct snd_kcontrol_new ssm2602_input_mux_controls = |
| SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]); |
| |
| static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = { |
| SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1, |
| &ssm2602_output_mixer_controls[0], |
| ARRAY_SIZE(ssm2602_output_mixer_controls)), |
| SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1), |
| SND_SOC_DAPM_OUTPUT("LOUT"), |
| SND_SOC_DAPM_OUTPUT("LHPOUT"), |
| SND_SOC_DAPM_OUTPUT("ROUT"), |
| SND_SOC_DAPM_OUTPUT("RHPOUT"), |
| SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1), |
| SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls), |
| SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0), |
| SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1), |
| SND_SOC_DAPM_INPUT("MICIN"), |
| SND_SOC_DAPM_INPUT("RLINEIN"), |
| SND_SOC_DAPM_INPUT("LLINEIN"), |
| }; |
| |
| static const struct snd_soc_dapm_route audio_conn[] = { |
| /* output mixer */ |
| {"Output Mixer", "Line Bypass Switch", "Line Input"}, |
| {"Output Mixer", "HiFi Playback Switch", "DAC"}, |
| {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, |
| |
| /* outputs */ |
| {"RHPOUT", NULL, "Output Mixer"}, |
| {"ROUT", NULL, "Output Mixer"}, |
| {"LHPOUT", NULL, "Output Mixer"}, |
| {"LOUT", NULL, "Output Mixer"}, |
| |
| /* input mux */ |
| {"Input Mux", "Line", "Line Input"}, |
| {"Input Mux", "Mic", "Mic Bias"}, |
| {"ADC", NULL, "Input Mux"}, |
| |
| /* inputs */ |
| {"Line Input", NULL, "LLINEIN"}, |
| {"Line Input", NULL, "RLINEIN"}, |
| {"Mic Bias", NULL, "MICIN"}, |
| }; |
| |
| static int ssm2602_add_widgets(struct snd_soc_codec *codec) |
| { |
| snd_soc_dapm_new_controls(codec, ssm2602_dapm_widgets, |
| ARRAY_SIZE(ssm2602_dapm_widgets)); |
| |
| snd_soc_dapm_add_routes(codec, audio_conn, ARRAY_SIZE(audio_conn)); |
| |
| snd_soc_dapm_new_widgets(codec); |
| return 0; |
| } |
| |
| struct _coeff_div { |
| u32 mclk; |
| u32 rate; |
| u16 fs; |
| u8 sr:4; |
| u8 bosr:1; |
| u8 usb:1; |
| }; |
| |
| /* codec mclk clock divider coefficients */ |
| static const struct _coeff_div coeff_div[] = { |
| /* 48k */ |
| {12288000, 48000, 256, 0x0, 0x0, 0x0}, |
| {18432000, 48000, 384, 0x0, 0x1, 0x0}, |
| {12000000, 48000, 250, 0x0, 0x0, 0x1}, |
| |
| /* 32k */ |
| {12288000, 32000, 384, 0x6, 0x0, 0x0}, |
| {18432000, 32000, 576, 0x6, 0x1, 0x0}, |
| {12000000, 32000, 375, 0x6, 0x0, 0x1}, |
| |
| /* 8k */ |
| {12288000, 8000, 1536, 0x3, 0x0, 0x0}, |
| {18432000, 8000, 2304, 0x3, 0x1, 0x0}, |
| {11289600, 8000, 1408, 0xb, 0x0, 0x0}, |
| {16934400, 8000, 2112, 0xb, 0x1, 0x0}, |
| {12000000, 8000, 1500, 0x3, 0x0, 0x1}, |
| |
| /* 96k */ |
| {12288000, 96000, 128, 0x7, 0x0, 0x0}, |
| {18432000, 96000, 192, 0x7, 0x1, 0x0}, |
| {12000000, 96000, 125, 0x7, 0x0, 0x1}, |
| |
| /* 44.1k */ |
| {11289600, 44100, 256, 0x8, 0x0, 0x0}, |
| {16934400, 44100, 384, 0x8, 0x1, 0x0}, |
| {12000000, 44100, 272, 0x8, 0x1, 0x1}, |
| |
| /* 88.2k */ |
| {11289600, 88200, 128, 0xf, 0x0, 0x0}, |
| {16934400, 88200, 192, 0xf, 0x1, 0x0}, |
| {12000000, 88200, 136, 0xf, 0x1, 0x1}, |
| }; |
| |
| static inline int get_coeff(int mclk, int rate) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { |
| if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) |
| return i; |
| } |
| return i; |
| } |
| |
| static int ssm2602_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| u16 srate; |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->codec; |
| struct ssm2602_priv *ssm2602 = codec->private_data; |
| u16 iface = ssm2602_read_reg_cache(codec, SSM2602_IFACE) & 0xfff3; |
| int i = get_coeff(ssm2602->sysclk, params_rate(params)); |
| |
| /*no match is found*/ |
| if (i == ARRAY_SIZE(coeff_div)) |
| return -EINVAL; |
| |
| srate = (coeff_div[i].sr << 2) | |
| (coeff_div[i].bosr << 1) | coeff_div[i].usb; |
| |
| ssm2602_write(codec, SSM2602_ACTIVE, 0); |
| ssm2602_write(codec, SSM2602_SRATE, srate); |
| |
| /* bit size */ |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| iface |= 0x0004; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| iface |= 0x0008; |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| iface |= 0x000c; |
| break; |
| } |
| ssm2602_write(codec, SSM2602_IFACE, iface); |
| ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC); |
| return 0; |
| } |
| |
| static int ssm2602_startup(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->codec; |
| struct ssm2602_priv *ssm2602 = codec->private_data; |
| struct snd_pcm_runtime *master_runtime; |
| |
| /* The DAI has shared clocks so if we already have a playback or |
| * capture going then constrain this substream to match it. |
| */ |
| if (ssm2602->master_substream) { |
| master_runtime = ssm2602->master_substream->runtime; |
| snd_pcm_hw_constraint_minmax(substream->runtime, |
| SNDRV_PCM_HW_PARAM_RATE, |
| master_runtime->rate, |
| master_runtime->rate); |
| |
| snd_pcm_hw_constraint_minmax(substream->runtime, |
| SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| master_runtime->sample_bits, |
| master_runtime->sample_bits); |
| |
| ssm2602->slave_substream = substream; |
| } else |
| ssm2602->master_substream = substream; |
| |
| return 0; |
| } |
| |
| static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->codec; |
| /* set active */ |
| ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC); |
| |
| return 0; |
| } |
| |
| static void ssm2602_shutdown(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->codec; |
| /* deactivate */ |
| if (!codec->active) |
| ssm2602_write(codec, SSM2602_ACTIVE, 0); |
| } |
| |
| static int ssm2602_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 mute_reg = ssm2602_read_reg_cache(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE; |
| if (mute) |
| ssm2602_write(codec, SSM2602_APDIGI, |
| mute_reg | APDIGI_ENABLE_DAC_MUTE); |
| else |
| ssm2602_write(codec, SSM2602_APDIGI, mute_reg); |
| return 0; |
| } |
| |
| static int ssm2602_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 ssm2602_priv *ssm2602 = codec->private_data; |
| switch (freq) { |
| case 11289600: |
| case 12000000: |
| case 12288000: |
| case 16934400: |
| case 18432000: |
| ssm2602->sysclk = freq; |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| unsigned int fmt) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| u16 iface = 0; |
| |
| /* set master/slave audio interface */ |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| iface |= 0x0040; |
| 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 |= 0x0002; |
| break; |
| case SND_SOC_DAIFMT_RIGHT_J: |
| break; |
| case SND_SOC_DAIFMT_LEFT_J: |
| iface |= 0x0001; |
| break; |
| case SND_SOC_DAIFMT_DSP_A: |
| iface |= 0x0003; |
| break; |
| case SND_SOC_DAIFMT_DSP_B: |
| iface |= 0x0013; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* clock inversion */ |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_NF: |
| break; |
| case SND_SOC_DAIFMT_IB_IF: |
| iface |= 0x0090; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| iface |= 0x0080; |
| break; |
| case SND_SOC_DAIFMT_NB_IF: |
| iface |= 0x0010; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* set iface */ |
| ssm2602_write(codec, SSM2602_IFACE, iface); |
| return 0; |
| } |
| |
| static int ssm2602_set_bias_level(struct snd_soc_codec *codec, |
| enum snd_soc_bias_level level) |
| { |
| u16 reg = ssm2602_read_reg_cache(codec, SSM2602_PWR) & 0xff7f; |
| |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| /* vref/mid, osc on, dac unmute */ |
| ssm2602_write(codec, SSM2602_PWR, reg); |
| break; |
| case SND_SOC_BIAS_PREPARE: |
| break; |
| case SND_SOC_BIAS_STANDBY: |
| /* everything off except vref/vmid, */ |
| ssm2602_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN); |
| break; |
| case SND_SOC_BIAS_OFF: |
| /* everything off, dac mute, inactive */ |
| ssm2602_write(codec, SSM2602_ACTIVE, 0); |
| ssm2602_write(codec, SSM2602_PWR, 0xffff); |
| break; |
| |
| } |
| codec->bias_level = level; |
| return 0; |
| } |
| |
| #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
| SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ |
| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ |
| SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ |
| SNDRV_PCM_RATE_96000) |
| |
| struct snd_soc_dai ssm2602_dai = { |
| .name = "SSM2602", |
| .playback = { |
| .stream_name = "Playback", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = SSM2602_RATES, |
| .formats = SNDRV_PCM_FMTBIT_S32_LE,}, |
| .capture = { |
| .stream_name = "Capture", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = SSM2602_RATES, |
| .formats = SNDRV_PCM_FMTBIT_S32_LE,}, |
| .ops = { |
| .startup = ssm2602_startup, |
| .prepare = ssm2602_pcm_prepare, |
| .hw_params = ssm2602_hw_params, |
| .shutdown = ssm2602_shutdown, |
| }, |
| .dai_ops = { |
| .digital_mute = ssm2602_mute, |
| .set_sysclk = ssm2602_set_dai_sysclk, |
| .set_fmt = ssm2602_set_dai_fmt, |
| } |
| }; |
| EXPORT_SYMBOL_GPL(ssm2602_dai); |
| |
| static int ssm2602_suspend(struct platform_device *pdev, pm_message_t state) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec = socdev->codec; |
| |
| ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| return 0; |
| } |
| |
| static int ssm2602_resume(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec = socdev->codec; |
| int i; |
| u8 data[2]; |
| u16 *cache = codec->reg_cache; |
| |
| /* Sync reg_cache with the hardware */ |
| for (i = 0; i < ARRAY_SIZE(ssm2602_reg); i++) { |
| data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| data[1] = cache[i] & 0x00ff; |
| codec->hw_write(codec->control_data, data, 2); |
| } |
| ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| ssm2602_set_bias_level(codec, codec->suspend_bias_level); |
| return 0; |
| } |
| |
| /* |
| * initialise the ssm2602 driver |
| * register the mixer and dsp interfaces with the kernel |
| */ |
| static int ssm2602_init(struct snd_soc_device *socdev) |
| { |
| struct snd_soc_codec *codec = socdev->codec; |
| int reg, ret = 0; |
| |
| codec->name = "SSM2602"; |
| codec->owner = THIS_MODULE; |
| codec->read = ssm2602_read_reg_cache; |
| codec->write = ssm2602_write; |
| codec->set_bias_level = ssm2602_set_bias_level; |
| codec->dai = &ssm2602_dai; |
| codec->num_dai = 1; |
| codec->reg_cache_size = sizeof(ssm2602_reg); |
| codec->reg_cache = kmemdup(ssm2602_reg, sizeof(ssm2602_reg), |
| GFP_KERNEL); |
| if (codec->reg_cache == NULL) |
| return -ENOMEM; |
| |
| ssm2602_reset(codec); |
| |
| /* register pcms */ |
| ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| if (ret < 0) { |
| pr_err("ssm2602: failed to create pcms\n"); |
| goto pcm_err; |
| } |
| /*power on device*/ |
| ssm2602_write(codec, SSM2602_ACTIVE, 0); |
| /* set the update bits */ |
| reg = ssm2602_read_reg_cache(codec, SSM2602_LINVOL); |
| ssm2602_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH); |
| reg = ssm2602_read_reg_cache(codec, SSM2602_RINVOL); |
| ssm2602_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH); |
| reg = ssm2602_read_reg_cache(codec, SSM2602_LOUT1V); |
| ssm2602_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH); |
| reg = ssm2602_read_reg_cache(codec, SSM2602_ROUT1V); |
| ssm2602_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH); |
| /*select Line in as default input*/ |
| ssm2602_write(codec, SSM2602_APANA, |
| APANA_ENABLE_MIC_BOOST2 | APANA_SELECT_DAC | |
| APANA_ENABLE_MIC_BOOST); |
| ssm2602_write(codec, SSM2602_PWR, 0); |
| |
| ssm2602_add_controls(codec); |
| ssm2602_add_widgets(codec); |
| ret = snd_soc_register_card(socdev); |
| if (ret < 0) { |
| pr_err("ssm2602: 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 *ssm2602_socdev; |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| /* |
| * ssm2602 2 wire address is determined by GPIO5 |
| * state during powerup. |
| * low = 0x1a |
| * high = 0x1b |
| */ |
| static int ssm2602_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct snd_soc_device *socdev = ssm2602_socdev; |
| struct snd_soc_codec *codec = socdev->codec; |
| int ret; |
| |
| i2c_set_clientdata(i2c, codec); |
| codec->control_data = i2c; |
| |
| ret = ssm2602_init(socdev); |
| if (ret < 0) |
| pr_err("failed to initialise SSM2602\n"); |
| |
| return ret; |
| } |
| |
| static int ssm2602_i2c_remove(struct i2c_client *client) |
| { |
| struct snd_soc_codec *codec = i2c_get_clientdata(client); |
| kfree(codec->reg_cache); |
| return 0; |
| } |
| |
| static const struct i2c_device_id ssm2602_i2c_id[] = { |
| { "ssm2602", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id); |
| /* corgi i2c codec control layer */ |
| static struct i2c_driver ssm2602_i2c_driver = { |
| .driver = { |
| .name = "SSM2602 I2C Codec", |
| .owner = THIS_MODULE, |
| }, |
| .probe = ssm2602_i2c_probe, |
| .remove = ssm2602_i2c_remove, |
| .id_table = ssm2602_i2c_id, |
| }; |
| |
| static int ssm2602_add_i2c_device(struct platform_device *pdev, |
| const struct ssm2602_setup_data *setup) |
| { |
| struct i2c_board_info info; |
| struct i2c_adapter *adapter; |
| struct i2c_client *client; |
| int ret; |
| |
| ret = i2c_add_driver(&ssm2602_i2c_driver); |
| if (ret != 0) { |
| dev_err(&pdev->dev, "can't add i2c driver\n"); |
| return ret; |
| } |
| memset(&info, 0, sizeof(struct i2c_board_info)); |
| info.addr = setup->i2c_address; |
| strlcpy(info.type, "ssm2602", I2C_NAME_SIZE); |
| adapter = i2c_get_adapter(setup->i2c_bus); |
| if (!adapter) { |
| dev_err(&pdev->dev, "can't get i2c adapter %d\n", |
| setup->i2c_bus); |
| goto err_driver; |
| } |
| client = i2c_new_device(adapter, &info); |
| i2c_put_adapter(adapter); |
| if (!client) { |
| dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", |
| (unsigned int)info.addr); |
| goto err_driver; |
| } |
| return 0; |
| err_driver: |
| i2c_del_driver(&ssm2602_i2c_driver); |
| return -ENODEV; |
| } |
| #endif |
| |
| static int ssm2602_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct ssm2602_setup_data *setup; |
| struct snd_soc_codec *codec; |
| struct ssm2602_priv *ssm2602; |
| int ret = 0; |
| |
| pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION); |
| |
| setup = socdev->codec_data; |
| codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| if (codec == NULL) |
| return -ENOMEM; |
| |
| ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL); |
| if (ssm2602 == NULL) { |
| kfree(codec); |
| return -ENOMEM; |
| } |
| |
| codec->private_data = ssm2602; |
| socdev->codec = codec; |
| mutex_init(&codec->mutex); |
| INIT_LIST_HEAD(&codec->dapm_widgets); |
| INIT_LIST_HEAD(&codec->dapm_paths); |
| |
| ssm2602_socdev = socdev; |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| if (setup->i2c_address) { |
| codec->hw_write = (hw_write_t)i2c_master_send; |
| ret = ssm2602_add_i2c_device(pdev, setup); |
| } |
| #else |
| /* other interfaces */ |
| #endif |
| return ret; |
| } |
| |
| /* remove everything here */ |
| static int ssm2602_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec = socdev->codec; |
| |
| if (codec->control_data) |
| ssm2602_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_unregister_device(codec->control_data); |
| i2c_del_driver(&ssm2602_i2c_driver); |
| #endif |
| kfree(codec->private_data); |
| kfree(codec); |
| |
| return 0; |
| } |
| |
| struct snd_soc_codec_device soc_codec_dev_ssm2602 = { |
| .probe = ssm2602_probe, |
| .remove = ssm2602_remove, |
| .suspend = ssm2602_suspend, |
| .resume = ssm2602_resume, |
| }; |
| EXPORT_SYMBOL_GPL(soc_codec_dev_ssm2602); |
| |
| MODULE_DESCRIPTION("ASoC ssm2602 driver"); |
| MODULE_AUTHOR("Cliff Cai"); |
| MODULE_LICENSE("GPL"); |