diff options
Diffstat (limited to 'sound/soc/codecs/ssm2602.c')
| -rw-r--r-- | sound/soc/codecs/ssm2602.c | 737 |
1 files changed, 737 insertions, 0 deletions
diff --git a/sound/soc/codecs/ssm2602.c b/sound/soc/codecs/ssm2602.c new file mode 100644 index 00000000..9801cd7c --- /dev/null +++ b/sound/soc/codecs/ssm2602.c @@ -0,0 +1,737 @@ +/* + * 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/spi/spi.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/initval.h> +#include <sound/tlv.h> + +#include "ssm2602.h" + +#define SSM2602_VERSION "0.1" + +enum ssm2602_type { + SSM2602, + SSM2604, +}; + +/* codec private data */ +struct ssm2602_priv { + unsigned int sysclk; + enum snd_soc_control_type control_type; + struct snd_pcm_substream *master_substream; + struct snd_pcm_substream *slave_substream; + + enum ssm2602_type type; +}; + +/* + * 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] = { + 0x0097, 0x0097, 0x0079, 0x0079, + 0x000a, 0x0008, 0x009f, 0x000a, + 0x0000, 0x0000 +}; + +#define ssm2602_reset(c) snd_soc_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 unsigned int ssm260x_outmix_tlv[] = { + TLV_DB_RANGE_HEAD(2), + 0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0), + 48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0), +}; + +static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0); +static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0); + +static const struct snd_kcontrol_new ssm260x_snd_controls[] = { +SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0, + ssm260x_inpga_tlv), +SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 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("Playback De-emphasis", ssm2602_enum[1]), +}; + +static const struct snd_kcontrol_new ssm2602_snd_controls[] = { +SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V, + 0, 127, 0, ssm260x_outmix_tlv), +SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V, + 7, 1, 0), +SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1, + ssm260x_sidetone_tlv), + +SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0), +SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0), +SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1), +}; + +/* Output Mixer */ +static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = { +SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0), +SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0), +SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 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 ssm260x_dapm_widgets[] = { +SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1), +SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1), +SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0), + +SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0), + +SND_SOC_DAPM_OUTPUT("LOUT"), +SND_SOC_DAPM_OUTPUT("ROUT"), +SND_SOC_DAPM_INPUT("RLINEIN"), +SND_SOC_DAPM_INPUT("LLINEIN"), +}; + +static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = { +SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1, + ssm260x_output_mixer_controls, + ARRAY_SIZE(ssm260x_output_mixer_controls)), + +SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls), +SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1), + +SND_SOC_DAPM_OUTPUT("LHPOUT"), +SND_SOC_DAPM_OUTPUT("RHPOUT"), +SND_SOC_DAPM_INPUT("MICIN"), +}; + +static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = { +SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, + ssm260x_output_mixer_controls, + ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */ +}; + +static const struct snd_soc_dapm_route ssm260x_routes[] = { + {"DAC", NULL, "Digital Core Power"}, + {"ADC", NULL, "Digital Core Power"}, + + {"Output Mixer", "Line Bypass Switch", "Line Input"}, + {"Output Mixer", "HiFi Playback Switch", "DAC"}, + + {"ROUT", NULL, "Output Mixer"}, + {"LOUT", NULL, "Output Mixer"}, + + {"Line Input", NULL, "LLINEIN"}, + {"Line Input", NULL, "RLINEIN"}, +}; + +static const struct snd_soc_dapm_route ssm2602_routes[] = { + {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, + + {"RHPOUT", NULL, "Output Mixer"}, + {"LHPOUT", NULL, "Output Mixer"}, + + {"Input Mux", "Line", "Line Input"}, + {"Input Mux", "Mic", "Mic Bias"}, + {"ADC", NULL, "Input Mux"}, + + {"Mic Bias", NULL, "MICIN"}, +}; + +static const struct snd_soc_dapm_route ssm2604_routes[] = { + {"ADC", NULL, "Line Input"}, +}; + +struct ssm2602_coeff { + u32 mclk; + u32 rate; + u8 srate; +}; + +#define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb)) + +/* codec mclk clock coefficients */ +static const struct ssm2602_coeff ssm2602_coeff_table[] = { + /* 48k */ + {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)}, + {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)}, + {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)}, + + /* 32k */ + {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)}, + {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)}, + {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)}, + + /* 8k */ + {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)}, + {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)}, + {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)}, + {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)}, + {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)}, + + /* 96k */ + {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)}, + {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)}, + {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)}, + + /* 44.1k */ + {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)}, + {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)}, + {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)}, + + /* 88.2k */ + {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)}, + {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)}, + {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)}, +}; + +static inline int ssm2602_get_coeff(int mclk, int rate) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) { + if (ssm2602_coeff_table[i].rate == rate && + ssm2602_coeff_table[i].mclk == mclk) + return ssm2602_coeff_table[i].srate; + } + return -EINVAL; +} + +static int ssm2602_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 ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec); + u16 iface = snd_soc_read(codec, SSM2602_IFACE) & 0xfff3; + int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params)); + + if (substream == ssm2602->slave_substream) { + dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n"); + return 0; + } + + if (srate < 0) + return srate; + + snd_soc_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; + } + snd_soc_write(codec, SSM2602_IFACE, iface); + return 0; +} + +static int ssm2602_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec); + struct i2c_client *i2c = codec->control_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. + * TODO: the ssm2602 allows pairs of non-matching PB/REC rates + */ + if (ssm2602->master_substream) { + master_runtime = ssm2602->master_substream->runtime; + dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n", + master_runtime->sample_bits, + master_runtime->rate); + + if (master_runtime->rate != 0) + snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_RATE, + master_runtime->rate, + master_runtime->rate); + + if (master_runtime->sample_bits != 0) + 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 void ssm2602_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec); + + if (ssm2602->master_substream == substream) + ssm2602->master_substream = ssm2602->slave_substream; + + ssm2602->slave_substream = NULL; +} + + +static int ssm2602_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + u16 mute_reg = snd_soc_read(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE; + if (mute) + snd_soc_write(codec, SSM2602_APDIGI, + mute_reg | APDIGI_ENABLE_DAC_MUTE); + else + snd_soc_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 = snd_soc_codec_get_drvdata(codec); + 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 |= 0x0013; + break; + case SND_SOC_DAIFMT_DSP_B: + iface |= 0x0003; + 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 */ + snd_soc_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 = snd_soc_read(codec, SSM2602_PWR); + reg &= ~(PWR_POWER_OFF | PWR_OSC_PDN); + + switch (level) { + case SND_SOC_BIAS_ON: + /* vref/mid, osc on, dac unmute */ + snd_soc_write(codec, SSM2602_PWR, reg); + break; + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + /* everything off except vref/vmid, */ + snd_soc_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN); + break; + case SND_SOC_BIAS_OFF: + /* everything off, dac mute, inactive */ + snd_soc_write(codec, SSM2602_PWR, 0xffff); + break; + + } + codec->dapm.bias_level = level; + return 0; +} + +#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\ + SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ + SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) + +#define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_ops ssm2602_dai_ops = { + .startup = ssm2602_startup, + .hw_params = ssm2602_hw_params, + .shutdown = ssm2602_shutdown, + .digital_mute = ssm2602_mute, + .set_sysclk = ssm2602_set_dai_sysclk, + .set_fmt = ssm2602_set_dai_fmt, +}; + +static struct snd_soc_dai_driver ssm2602_dai = { + .name = "ssm2602-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SSM2602_RATES, + .formats = SSM2602_FORMATS,}, + .capture = { + .stream_name = "Capture", + .channels_min = 2, + .channels_max = 2, + .rates = SSM2602_RATES, + .formats = SSM2602_FORMATS,}, + .ops = &ssm2602_dai_ops, +}; + +static int ssm2602_suspend(struct snd_soc_codec *codec, pm_message_t state) +{ + ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF); + return 0; +} + +static int ssm2602_resume(struct snd_soc_codec *codec) +{ + snd_soc_cache_sync(codec); + + ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + return 0; +} + +static int ssm2602_probe(struct snd_soc_codec *codec) +{ + struct snd_soc_dapm_context *dapm = &codec->dapm; + int ret, reg; + + reg = snd_soc_read(codec, SSM2602_LOUT1V); + snd_soc_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH); + reg = snd_soc_read(codec, SSM2602_ROUT1V); + snd_soc_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH); + + ret = snd_soc_add_controls(codec, ssm2602_snd_controls, + ARRAY_SIZE(ssm2602_snd_controls)); + if (ret) + return ret; + + ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets, + ARRAY_SIZE(ssm2602_dapm_widgets)); + if (ret) + return ret; + + return snd_soc_dapm_add_routes(dapm, ssm2602_routes, + ARRAY_SIZE(ssm2602_routes)); +} + +static int ssm2604_probe(struct snd_soc_codec *codec) +{ + struct snd_soc_dapm_context *dapm = &codec->dapm; + int ret; + + ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets, + ARRAY_SIZE(ssm2604_dapm_widgets)); + if (ret) + return ret; + + return snd_soc_dapm_add_routes(dapm, ssm2604_routes, + ARRAY_SIZE(ssm2604_routes)); +} + +static int ssm260x_probe(struct snd_soc_codec *codec) +{ + struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec); + int ret, reg; + + pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION); + + ret = snd_soc_codec_set_cache_io(codec, 7, 9, ssm2602->control_type); + if (ret < 0) { + dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); + return ret; + } + + ret = ssm2602_reset(codec); + if (ret < 0) { + dev_err(codec->dev, "Failed to issue reset: %d\n", ret); + return ret; + } + + /* set the update bits */ + reg = snd_soc_read(codec, SSM2602_LINVOL); + snd_soc_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH); + reg = snd_soc_read(codec, SSM2602_RINVOL); + snd_soc_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH); + /*select Line in as default input*/ + snd_soc_write(codec, SSM2602_APANA, APANA_SELECT_DAC | + APANA_ENABLE_MIC_BOOST); + + switch (ssm2602->type) { + case SSM2602: + ret = ssm2602_probe(codec); + break; + case SSM2604: + ret = ssm2604_probe(codec); + break; + } + + return ret; +} + +/* remove everything here */ +static int ssm2602_remove(struct snd_soc_codec *codec) +{ + ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF); + return 0; +} + +static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = { + .probe = ssm260x_probe, + .remove = ssm2602_remove, + .suspend = ssm2602_suspend, + .resume = ssm2602_resume, + .set_bias_level = ssm2602_set_bias_level, + .reg_cache_size = ARRAY_SIZE(ssm2602_reg), + .reg_word_size = sizeof(u16), + .reg_cache_default = ssm2602_reg, + + .controls = ssm260x_snd_controls, + .num_controls = ARRAY_SIZE(ssm260x_snd_controls), + .dapm_widgets = ssm260x_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets), + .dapm_routes = ssm260x_routes, + .num_dapm_routes = ARRAY_SIZE(ssm260x_routes), +}; + +#if defined(CONFIG_SPI_MASTER) +static int __devinit ssm2602_spi_probe(struct spi_device *spi) +{ + struct ssm2602_priv *ssm2602; + int ret; + + ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL); + if (ssm2602 == NULL) + return -ENOMEM; + + spi_set_drvdata(spi, ssm2602); + ssm2602->control_type = SND_SOC_SPI; + ssm2602->type = SSM2602; + + ret = snd_soc_register_codec(&spi->dev, + &soc_codec_dev_ssm2602, &ssm2602_dai, 1); + if (ret < 0) + kfree(ssm2602); + return ret; +} + +static int __devexit ssm2602_spi_remove(struct spi_device *spi) +{ + snd_soc_unregister_codec(&spi->dev); + kfree(spi_get_drvdata(spi)); + return 0; +} + +static struct spi_driver ssm2602_spi_driver = { + .driver = { + .name = "ssm2602", + .owner = THIS_MODULE, + }, + .probe = ssm2602_spi_probe, + .remove = __devexit_p(ssm2602_spi_remove), +}; +#endif + +#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 __devinit ssm2602_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct ssm2602_priv *ssm2602; + int ret; + + ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL); + if (ssm2602 == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, ssm2602); + ssm2602->control_type = SND_SOC_I2C; + ssm2602->type = id->driver_data; + + ret = snd_soc_register_codec(&i2c->dev, + &soc_codec_dev_ssm2602, &ssm2602_dai, 1); + if (ret < 0) + kfree(ssm2602); + return ret; +} + +static int __devexit ssm2602_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + kfree(i2c_get_clientdata(client)); + return 0; +} + +static const struct i2c_device_id ssm2602_i2c_id[] = { + { "ssm2602", SSM2602 }, + { "ssm2603", SSM2602 }, + { "ssm2604", SSM2604 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id); + +/* corgi i2c codec control layer */ +static struct i2c_driver ssm2602_i2c_driver = { + .driver = { + .name = "ssm2602", + .owner = THIS_MODULE, + }, + .probe = ssm2602_i2c_probe, + .remove = __devexit_p(ssm2602_i2c_remove), + .id_table = ssm2602_i2c_id, +}; +#endif + + +static int __init ssm2602_modinit(void) +{ + int ret = 0; + +#if defined(CONFIG_SPI_MASTER) + ret = spi_register_driver(&ssm2602_spi_driver); + if (ret) + return ret; +#endif + +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + ret = i2c_add_driver(&ssm2602_i2c_driver); + if (ret) + return ret; +#endif + + return ret; +} +module_init(ssm2602_modinit); + +static void __exit ssm2602_exit(void) +{ +#if defined(CONFIG_SPI_MASTER) + spi_unregister_driver(&ssm2602_spi_driver); +#endif + +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + i2c_del_driver(&ssm2602_i2c_driver); +#endif +} +module_exit(ssm2602_exit); + +MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver"); +MODULE_AUTHOR("Cliff Cai"); +MODULE_LICENSE("GPL"); |