| /* |
| * neo1973_wm8753.c -- SoC audio for Neo1973 |
| * |
| * Copyright 2007 Wolfson Microelectronics PLC. |
| * Author: Graeme Gregory |
| * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.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. |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/timer.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| #include <linux/i2c.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/tlv.h> |
| |
| #include <asm/mach-types.h> |
| #include <asm/hardware/scoop.h> |
| #include <mach/regs-clock.h> |
| #include <mach/regs-gpio.h> |
| #include <mach/hardware.h> |
| #include <linux/io.h> |
| #include <mach/spi-gpio.h> |
| |
| #include <plat/regs-iis.h> |
| |
| #include "../codecs/wm8753.h" |
| #include "lm4857.h" |
| #include "s3c-dma.h" |
| #include "s3c24xx-i2s.h" |
| |
| /* define the scenarios */ |
| #define NEO_AUDIO_OFF 0 |
| #define NEO_GSM_CALL_AUDIO_HANDSET 1 |
| #define NEO_GSM_CALL_AUDIO_HEADSET 2 |
| #define NEO_GSM_CALL_AUDIO_BLUETOOTH 3 |
| #define NEO_STEREO_TO_SPEAKERS 4 |
| #define NEO_STEREO_TO_HEADPHONES 5 |
| #define NEO_CAPTURE_HANDSET 6 |
| #define NEO_CAPTURE_HEADSET 7 |
| #define NEO_CAPTURE_BLUETOOTH 8 |
| |
| static struct snd_soc_card neo1973; |
| static struct i2c_client *i2c; |
| |
| static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| unsigned int pll_out = 0, bclk = 0; |
| int ret = 0; |
| unsigned long iis_clkrate; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| iis_clkrate = s3c24xx_i2s_get_clockrate(); |
| |
| switch (params_rate(params)) { |
| case 8000: |
| case 16000: |
| pll_out = 12288000; |
| break; |
| case 48000: |
| bclk = WM8753_BCLK_DIV_4; |
| pll_out = 12288000; |
| break; |
| case 96000: |
| bclk = WM8753_BCLK_DIV_2; |
| pll_out = 12288000; |
| break; |
| case 11025: |
| bclk = WM8753_BCLK_DIV_16; |
| pll_out = 11289600; |
| break; |
| case 22050: |
| bclk = WM8753_BCLK_DIV_8; |
| pll_out = 11289600; |
| break; |
| case 44100: |
| bclk = WM8753_BCLK_DIV_4; |
| pll_out = 11289600; |
| break; |
| case 88200: |
| bclk = WM8753_BCLK_DIV_2; |
| pll_out = 11289600; |
| break; |
| } |
| |
| /* set codec DAI configuration */ |
| ret = snd_soc_dai_set_fmt(codec_dai, |
| SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM); |
| if (ret < 0) |
| return ret; |
| |
| /* set cpu DAI configuration */ |
| ret = snd_soc_dai_set_fmt(cpu_dai, |
| SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM); |
| if (ret < 0) |
| return ret; |
| |
| /* set the codec system clock for DAC and ADC */ |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) |
| return ret; |
| |
| /* set MCLK division for sample rate */ |
| ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, |
| S3C2410_IISMOD_32FS); |
| if (ret < 0) |
| return ret; |
| |
| /* set codec BCLK division for sample rate */ |
| ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk); |
| if (ret < 0) |
| return ret; |
| |
| /* set prescaler division for sample rate */ |
| ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, |
| S3C24XX_PRESCALE(4, 4)); |
| if (ret < 0) |
| return ret; |
| |
| /* codec PLL input is PCLK/4 */ |
| ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, |
| iis_clkrate / 4, pll_out); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| /* disable the PLL */ |
| return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0); |
| } |
| |
| /* |
| * Neo1973 WM8753 HiFi DAI opserations. |
| */ |
| static struct snd_soc_ops neo1973_hifi_ops = { |
| .hw_params = neo1973_hifi_hw_params, |
| .hw_free = neo1973_hifi_hw_free, |
| }; |
| |
| static int neo1973_voice_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| unsigned int pcmdiv = 0; |
| int ret = 0; |
| unsigned long iis_clkrate; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| iis_clkrate = s3c24xx_i2s_get_clockrate(); |
| |
| if (params_rate(params) != 8000) |
| return -EINVAL; |
| if (params_channels(params) != 1) |
| return -EINVAL; |
| |
| pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */ |
| |
| /* todo: gg check mode (DSP_B) against CSR datasheet */ |
| /* set codec DAI configuration */ |
| ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B | |
| SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); |
| if (ret < 0) |
| return ret; |
| |
| /* set the codec system clock for DAC and ADC */ |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) |
| return ret; |
| |
| /* set codec PCM division for sample rate */ |
| ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv); |
| if (ret < 0) |
| return ret; |
| |
| /* configure and enable PLL for 12.288MHz output */ |
| ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, |
| iis_clkrate / 4, 12288000); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int neo1973_voice_hw_free(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| /* disable the PLL */ |
| return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0); |
| } |
| |
| static struct snd_soc_ops neo1973_voice_ops = { |
| .hw_params = neo1973_voice_hw_params, |
| .hw_free = neo1973_voice_hw_free, |
| }; |
| |
| static int neo1973_scenario; |
| |
| static int neo1973_get_scenario(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| ucontrol->value.integer.value[0] = neo1973_scenario; |
| return 0; |
| } |
| |
| static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario) |
| { |
| struct snd_soc_dapm_context *dapm = &codec->dapm; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| switch (neo1973_scenario) { |
| case NEO_AUDIO_OFF: |
| snd_soc_dapm_disable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_GSM_CALL_AUDIO_HANDSET: |
| snd_soc_dapm_enable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_enable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_enable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_enable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_GSM_CALL_AUDIO_HEADSET: |
| snd_soc_dapm_enable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_enable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_enable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_enable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_GSM_CALL_AUDIO_BLUETOOTH: |
| snd_soc_dapm_disable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_enable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_enable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_STEREO_TO_SPEAKERS: |
| snd_soc_dapm_enable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_STEREO_TO_HEADPHONES: |
| snd_soc_dapm_enable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_CAPTURE_HANDSET: |
| snd_soc_dapm_disable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_enable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_CAPTURE_HEADSET: |
| snd_soc_dapm_disable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_enable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| break; |
| case NEO_CAPTURE_BLUETOOTH: |
| snd_soc_dapm_disable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| break; |
| default: |
| snd_soc_dapm_disable_pin(dapm, "Audio Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line Out"); |
| snd_soc_dapm_disable_pin(dapm, "GSM Line In"); |
| snd_soc_dapm_disable_pin(dapm, "Headset Mic"); |
| snd_soc_dapm_disable_pin(dapm, "Call Mic"); |
| } |
| |
| snd_soc_dapm_sync(dapm); |
| |
| return 0; |
| } |
| |
| static int neo1973_set_scenario(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| if (neo1973_scenario == ucontrol->value.integer.value[0]) |
| return 0; |
| |
| neo1973_scenario = ucontrol->value.integer.value[0]; |
| set_scenario_endpoints(codec, neo1973_scenario); |
| return 1; |
| } |
| |
| static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0}; |
| |
| static void lm4857_write_regs(void) |
| { |
| pr_debug("Entered %s\n", __func__); |
| |
| if (i2c_master_send(i2c, lm4857_regs, 4) != 4) |
| printk(KERN_ERR "lm4857: i2c write failed\n"); |
| } |
| |
| static int lm4857_get_reg(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int reg = mc->reg; |
| int shift = mc->shift; |
| int mask = mc->max; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask; |
| return 0; |
| } |
| |
| static int lm4857_set_reg(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int reg = mc->reg; |
| int shift = mc->shift; |
| int mask = mc->max; |
| |
| if (((lm4857_regs[reg] >> shift) & mask) == |
| ucontrol->value.integer.value[0]) |
| return 0; |
| |
| lm4857_regs[reg] &= ~(mask << shift); |
| lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift; |
| lm4857_write_regs(); |
| return 1; |
| } |
| |
| static int lm4857_get_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| u8 value = lm4857_regs[LM4857_CTRL] & 0x0F; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| if (value) |
| value -= 5; |
| |
| ucontrol->value.integer.value[0] = value; |
| return 0; |
| } |
| |
| static int lm4857_set_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| u8 value = ucontrol->value.integer.value[0]; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| if (value) |
| value += 5; |
| |
| if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value) |
| return 0; |
| |
| lm4857_regs[LM4857_CTRL] &= 0xF0; |
| lm4857_regs[LM4857_CTRL] |= value; |
| lm4857_write_regs(); |
| return 1; |
| } |
| |
| static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = { |
| SND_SOC_DAPM_LINE("Audio Out", NULL), |
| SND_SOC_DAPM_LINE("GSM Line Out", NULL), |
| SND_SOC_DAPM_LINE("GSM Line In", NULL), |
| SND_SOC_DAPM_MIC("Headset Mic", NULL), |
| SND_SOC_DAPM_MIC("Call Mic", NULL), |
| }; |
| |
| |
| static const struct snd_soc_dapm_route dapm_routes[] = { |
| |
| /* Connections to the lm4857 amp */ |
| {"Audio Out", NULL, "LOUT1"}, |
| {"Audio Out", NULL, "ROUT1"}, |
| |
| /* Connections to the GSM Module */ |
| {"GSM Line Out", NULL, "MONO1"}, |
| {"GSM Line Out", NULL, "MONO2"}, |
| {"RXP", NULL, "GSM Line In"}, |
| {"RXN", NULL, "GSM Line In"}, |
| |
| /* Connections to Headset */ |
| {"MIC1", NULL, "Mic Bias"}, |
| {"Mic Bias", NULL, "Headset Mic"}, |
| |
| /* Call Mic */ |
| {"MIC2", NULL, "Mic Bias"}, |
| {"MIC2N", NULL, "Mic Bias"}, |
| {"Mic Bias", NULL, "Call Mic"}, |
| |
| /* Connect the ALC pins */ |
| {"ACIN", NULL, "ACOP"}, |
| }; |
| |
| static const char *lm4857_mode[] = { |
| "Off", |
| "Call Speaker", |
| "Stereo Speakers", |
| "Stereo Speakers + Headphones", |
| "Headphones" |
| }; |
| |
| static const struct soc_enum lm4857_mode_enum[] = { |
| SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode), |
| }; |
| |
| static const char *neo_scenarios[] = { |
| "Off", |
| "GSM Handset", |
| "GSM Headset", |
| "GSM Bluetooth", |
| "Speakers", |
| "Headphones", |
| "Capture Handset", |
| "Capture Headset", |
| "Capture Bluetooth" |
| }; |
| |
| static const struct soc_enum neo_scenario_enum[] = { |
| SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios), |
| }; |
| |
| static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0); |
| static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0); |
| |
| static const struct snd_kcontrol_new wm8753_neo1973_controls[] = { |
| SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0, |
| lm4857_get_reg, lm4857_set_reg, stereo_tlv), |
| SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0, |
| lm4857_get_reg, lm4857_set_reg, stereo_tlv), |
| SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0, |
| lm4857_get_reg, lm4857_set_reg, mono_tlv), |
| SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0], |
| lm4857_get_mode, lm4857_set_mode), |
| SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0], |
| neo1973_get_scenario, neo1973_set_scenario), |
| SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0, |
| lm4857_get_reg, lm4857_set_reg), |
| SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0, |
| lm4857_get_reg, lm4857_set_reg), |
| SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0, |
| lm4857_get_reg, lm4857_set_reg), |
| SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0, |
| lm4857_get_reg, lm4857_set_reg), |
| }; |
| |
| /* |
| * This is an example machine initialisation for a wm8753 connected to a |
| * neo1973 II. It is missing logic to detect hp/mic insertions and logic |
| * to re-route the audio in such an event. |
| */ |
| static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct snd_soc_codec *codec = rtd->codec; |
| struct snd_soc_dapm_context *dapm = &codec->dapm; |
| int err; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| /* set up NC codec pins */ |
| snd_soc_dapm_nc_pin(dapm, "LOUT2"); |
| snd_soc_dapm_nc_pin(dapm, "ROUT2"); |
| snd_soc_dapm_nc_pin(dapm, "OUT3"); |
| snd_soc_dapm_nc_pin(dapm, "OUT4"); |
| snd_soc_dapm_nc_pin(dapm, "LINE1"); |
| snd_soc_dapm_nc_pin(dapm, "LINE2"); |
| |
| /* Add neo1973 specific widgets */ |
| snd_soc_dapm_new_controls(dapm, wm8753_dapm_widgets, |
| ARRAY_SIZE(wm8753_dapm_widgets)); |
| |
| /* set endpoints to default mode */ |
| set_scenario_endpoints(codec, NEO_AUDIO_OFF); |
| |
| /* add neo1973 specific controls */ |
| err = snd_soc_add_controls(codec, wm8753_neo1973_controls, |
| ARRAY_SIZE(8753_neo1973_controls)); |
| if (err < 0) |
| return err; |
| |
| /* set up neo1973 specific audio routes */ |
| err = snd_soc_dapm_add_routes(dapm, dapm_routes, |
| ARRAY_SIZE(dapm_routes)); |
| |
| snd_soc_dapm_sync(dapm); |
| return 0; |
| } |
| |
| /* |
| * BT Codec DAI |
| */ |
| static struct snd_soc_dai bt_dai = { |
| .name = "bluetooth-dai", |
| .playback = { |
| .channels_min = 1, |
| .channels_max = 1, |
| .rates = SNDRV_PCM_RATE_8000, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
| .capture = { |
| .channels_min = 1, |
| .channels_max = 1, |
| .rates = SNDRV_PCM_RATE_8000, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
| }; |
| |
| static struct snd_soc_dai_link neo1973_dai[] = { |
| { /* Hifi Playback - for similatious use with voice below */ |
| .name = "WM8753", |
| .stream_name = "WM8753 HiFi", |
| .platform_name = "s3c24xx-pcm-audio", |
| .cpu_dai_name = "s3c24xx-i2s", |
| .codec_dai_name = "wm8753-hifi", |
| .codec_name = "wm8753-codec.0-0x1a", |
| .init = neo1973_wm8753_init, |
| .ops = &neo1973_hifi_ops, |
| }, |
| { /* Voice via BT */ |
| .name = "Bluetooth", |
| .stream_name = "Voice", |
| .platform_name = "s3c24xx-pcm-audio", |
| .cpu_dai_name = "bluetooth-dai", |
| .codec_dai_name = "wm8753-voice", |
| .codec_name = "wm8753-codec.0-0x1a", |
| .ops = &neo1973_voice_ops, |
| }, |
| }; |
| |
| static struct snd_soc_card neo1973 = { |
| .name = "neo1973", |
| .dai_link = neo1973_dai, |
| .num_links = ARRAY_SIZE(neo1973_dai), |
| }; |
| |
| static int lm4857_i2c_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| pr_debug("Entered %s\n", __func__); |
| |
| i2c = client; |
| |
| lm4857_write_regs(); |
| return 0; |
| } |
| |
| static int lm4857_i2c_remove(struct i2c_client *client) |
| { |
| pr_debug("Entered %s\n", __func__); |
| |
| i2c = NULL; |
| |
| return 0; |
| } |
| |
| static u8 lm4857_state; |
| |
| static int lm4857_suspend(struct i2c_client *dev, pm_message_t state) |
| { |
| pr_debug("Entered %s\n", __func__); |
| |
| dev_dbg(&dev->dev, "lm4857_suspend\n"); |
| lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf; |
| if (lm4857_state) { |
| lm4857_regs[LM4857_CTRL] &= 0xf0; |
| lm4857_write_regs(); |
| } |
| return 0; |
| } |
| |
| static int lm4857_resume(struct i2c_client *dev) |
| { |
| pr_debug("Entered %s\n", __func__); |
| |
| if (lm4857_state) { |
| lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f); |
| lm4857_write_regs(); |
| } |
| return 0; |
| } |
| |
| static void lm4857_shutdown(struct i2c_client *dev) |
| { |
| pr_debug("Entered %s\n", __func__); |
| |
| dev_dbg(&dev->dev, "lm4857_shutdown\n"); |
| lm4857_regs[LM4857_CTRL] &= 0xf0; |
| lm4857_write_regs(); |
| } |
| |
| static const struct i2c_device_id lm4857_i2c_id[] = { |
| { "neo1973_lm4857", 0 }, |
| { } |
| }; |
| |
| static struct i2c_driver lm4857_i2c_driver = { |
| .driver = { |
| .name = "LM4857 I2C Amp", |
| .owner = THIS_MODULE, |
| }, |
| .suspend = lm4857_suspend, |
| .resume = lm4857_resume, |
| .shutdown = lm4857_shutdown, |
| .probe = lm4857_i2c_probe, |
| .remove = lm4857_i2c_remove, |
| .id_table = lm4857_i2c_id, |
| }; |
| |
| static struct platform_device *neo1973_snd_device; |
| |
| static int __init neo1973_init(void) |
| { |
| int ret; |
| |
| pr_debug("Entered %s\n", __func__); |
| |
| if (!machine_is_neo1973_gta01()) { |
| printk(KERN_INFO |
| "Only GTA01 hardware supported by ASoC driver\n"); |
| return -ENODEV; |
| } |
| |
| neo1973_snd_device = platform_device_alloc("soc-audio", -1); |
| if (!neo1973_snd_device) |
| return -ENOMEM; |
| |
| platform_set_drvdata(neo1973_snd_device, &neo1973); |
| ret = platform_device_add(neo1973_snd_device); |
| |
| if (ret) { |
| platform_device_put(neo1973_snd_device); |
| return ret; |
| } |
| |
| ret = i2c_add_driver(&lm4857_i2c_driver); |
| |
| if (ret != 0) |
| platform_device_unregister(neo1973_snd_device); |
| |
| return ret; |
| } |
| |
| static void __exit neo1973_exit(void) |
| { |
| pr_debug("Entered %s\n", __func__); |
| |
| i2c_del_driver(&lm4857_i2c_driver); |
| platform_device_unregister(neo1973_snd_device); |
| } |
| |
| module_init(neo1973_init); |
| module_exit(neo1973_exit); |
| |
| /* Module information */ |
| MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org"); |
| MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973"); |
| MODULE_LICENSE("GPL"); |