804 lines
21 KiB
C
804 lines
21 KiB
C
/*
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* File: sound/soc/codecs/ssm2602.c
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* Author: Cliff Cai <Cliff.Cai@analog.com>
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*
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* Created: Tue June 06 2008
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* Description: Driver for ssm2602 sound chip
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*
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* Modified:
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* Copyright 2008 Analog Devices Inc.
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*
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* Bugs: Enter bugs at http://blackfin.uclinux.org/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/initval.h>
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#include "ssm2602.h"
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#define SSM2602_VERSION "0.1"
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struct snd_soc_codec_device soc_codec_dev_ssm2602;
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/* codec private data */
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struct ssm2602_priv {
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unsigned int sysclk;
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struct snd_pcm_substream *master_substream;
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struct snd_pcm_substream *slave_substream;
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};
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/*
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* ssm2602 register cache
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* We can't read the ssm2602 register space when we are
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* using 2 wire for device control, so we cache them instead.
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* There is no point in caching the reset register
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*/
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static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
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0x0017, 0x0017, 0x0079, 0x0079,
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0x0000, 0x0000, 0x0000, 0x000a,
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0x0000, 0x0000
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};
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/*
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* read ssm2602 register cache
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*/
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static inline unsigned int ssm2602_read_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u16 *cache = codec->reg_cache;
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if (reg == SSM2602_RESET)
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return 0;
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if (reg >= SSM2602_CACHEREGNUM)
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return -1;
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return cache[reg];
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}
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/*
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* write ssm2602 register cache
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*/
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static inline void ssm2602_write_reg_cache(struct snd_soc_codec *codec,
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u16 reg, unsigned int value)
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{
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u16 *cache = codec->reg_cache;
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if (reg >= SSM2602_CACHEREGNUM)
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return;
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cache[reg] = value;
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}
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/*
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* write to the ssm2602 register space
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*/
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static int ssm2602_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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u8 data[2];
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/* data is
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* D15..D9 ssm2602 register offset
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* D8...D0 register data
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*/
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data[0] = (reg << 1) | ((value >> 8) & 0x0001);
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data[1] = value & 0x00ff;
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ssm2602_write_reg_cache(codec, reg, value);
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if (codec->hw_write(codec->control_data, data, 2) == 2)
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return 0;
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else
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return -EIO;
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}
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#define ssm2602_reset(c) ssm2602_write(c, SSM2602_RESET, 0)
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/*Appending several "None"s just for OSS mixer use*/
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static const char *ssm2602_input_select[] = {
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"Line", "Mic", "None", "None", "None",
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"None", "None", "None",
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};
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static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
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static const struct soc_enum ssm2602_enum[] = {
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SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select),
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SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph),
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};
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static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
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SOC_DOUBLE_R("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
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0, 127, 0),
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SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
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7, 1, 0),
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SOC_DOUBLE_R("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 31, 0),
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SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
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SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
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SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
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SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1),
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SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
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SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
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SOC_ENUM("Capture Source", ssm2602_enum[0]),
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SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
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};
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/* Output Mixer */
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static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = {
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SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
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SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
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SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
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};
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/* Input mux */
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static const struct snd_kcontrol_new ssm2602_input_mux_controls =
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SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
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static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
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SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
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&ssm2602_output_mixer_controls[0],
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ARRAY_SIZE(ssm2602_output_mixer_controls)),
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
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SND_SOC_DAPM_OUTPUT("LOUT"),
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SND_SOC_DAPM_OUTPUT("LHPOUT"),
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SND_SOC_DAPM_OUTPUT("ROUT"),
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SND_SOC_DAPM_OUTPUT("RHPOUT"),
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SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
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SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
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SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
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SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
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SND_SOC_DAPM_INPUT("MICIN"),
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SND_SOC_DAPM_INPUT("RLINEIN"),
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SND_SOC_DAPM_INPUT("LLINEIN"),
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};
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static const struct snd_soc_dapm_route audio_conn[] = {
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/* output mixer */
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{"Output Mixer", "Line Bypass Switch", "Line Input"},
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{"Output Mixer", "HiFi Playback Switch", "DAC"},
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{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
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/* outputs */
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{"RHPOUT", NULL, "Output Mixer"},
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{"ROUT", NULL, "Output Mixer"},
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{"LHPOUT", NULL, "Output Mixer"},
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{"LOUT", NULL, "Output Mixer"},
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/* input mux */
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{"Input Mux", "Line", "Line Input"},
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{"Input Mux", "Mic", "Mic Bias"},
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{"ADC", NULL, "Input Mux"},
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/* inputs */
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{"Line Input", NULL, "LLINEIN"},
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{"Line Input", NULL, "RLINEIN"},
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{"Mic Bias", NULL, "MICIN"},
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};
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static int ssm2602_add_widgets(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, ssm2602_dapm_widgets,
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ARRAY_SIZE(ssm2602_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_conn, ARRAY_SIZE(audio_conn));
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snd_soc_dapm_new_widgets(codec);
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return 0;
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}
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struct _coeff_div {
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u32 mclk;
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u32 rate;
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u16 fs;
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u8 sr:4;
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u8 bosr:1;
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u8 usb:1;
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};
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/* codec mclk clock divider coefficients */
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static const struct _coeff_div coeff_div[] = {
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/* 48k */
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{12288000, 48000, 256, 0x0, 0x0, 0x0},
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{18432000, 48000, 384, 0x0, 0x1, 0x0},
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{12000000, 48000, 250, 0x0, 0x0, 0x1},
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/* 32k */
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{12288000, 32000, 384, 0x6, 0x0, 0x0},
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{18432000, 32000, 576, 0x6, 0x1, 0x0},
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{12000000, 32000, 375, 0x6, 0x0, 0x1},
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/* 8k */
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{12288000, 8000, 1536, 0x3, 0x0, 0x0},
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{18432000, 8000, 2304, 0x3, 0x1, 0x0},
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{11289600, 8000, 1408, 0xb, 0x0, 0x0},
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{16934400, 8000, 2112, 0xb, 0x1, 0x0},
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{12000000, 8000, 1500, 0x3, 0x0, 0x1},
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/* 96k */
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{12288000, 96000, 128, 0x7, 0x0, 0x0},
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{18432000, 96000, 192, 0x7, 0x1, 0x0},
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{12000000, 96000, 125, 0x7, 0x0, 0x1},
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/* 44.1k */
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{11289600, 44100, 256, 0x8, 0x0, 0x0},
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{16934400, 44100, 384, 0x8, 0x1, 0x0},
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{12000000, 44100, 272, 0x8, 0x1, 0x1},
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/* 88.2k */
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{11289600, 88200, 128, 0xf, 0x0, 0x0},
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{16934400, 88200, 192, 0xf, 0x1, 0x0},
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{12000000, 88200, 136, 0xf, 0x1, 0x1},
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};
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static inline int get_coeff(int mclk, int rate)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
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if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
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return i;
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}
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return i;
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}
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static int ssm2602_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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u16 srate;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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struct ssm2602_priv *ssm2602 = codec->private_data;
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struct i2c_client *i2c = codec->control_data;
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u16 iface = ssm2602_read_reg_cache(codec, SSM2602_IFACE) & 0xfff3;
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int i = get_coeff(ssm2602->sysclk, params_rate(params));
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if (substream == ssm2602->slave_substream) {
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dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n");
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return 0;
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}
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/*no match is found*/
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if (i == ARRAY_SIZE(coeff_div))
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return -EINVAL;
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srate = (coeff_div[i].sr << 2) |
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(coeff_div[i].bosr << 1) | coeff_div[i].usb;
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ssm2602_write(codec, SSM2602_ACTIVE, 0);
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ssm2602_write(codec, SSM2602_SRATE, srate);
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/* bit size */
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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iface |= 0x0004;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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iface |= 0x0008;
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break;
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case SNDRV_PCM_FORMAT_S32_LE:
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iface |= 0x000c;
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break;
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}
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ssm2602_write(codec, SSM2602_IFACE, iface);
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ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
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return 0;
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}
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static int ssm2602_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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struct ssm2602_priv *ssm2602 = codec->private_data;
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struct i2c_client *i2c = codec->control_data;
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struct snd_pcm_runtime *master_runtime;
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/* The DAI has shared clocks so if we already have a playback or
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* capture going then constrain this substream to match it.
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* TODO: the ssm2602 allows pairs of non-matching PB/REC rates
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*/
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if (ssm2602->master_substream) {
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master_runtime = ssm2602->master_substream->runtime;
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dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n",
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master_runtime->sample_bits,
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master_runtime->rate);
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if (master_runtime->rate != 0)
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snd_pcm_hw_constraint_minmax(substream->runtime,
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SNDRV_PCM_HW_PARAM_RATE,
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master_runtime->rate,
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master_runtime->rate);
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if (master_runtime->sample_bits != 0)
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snd_pcm_hw_constraint_minmax(substream->runtime,
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SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
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master_runtime->sample_bits,
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master_runtime->sample_bits);
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ssm2602->slave_substream = substream;
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} else
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ssm2602->master_substream = substream;
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return 0;
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}
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static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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/* set active */
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ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
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return 0;
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}
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static void ssm2602_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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struct ssm2602_priv *ssm2602 = codec->private_data;
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if (ssm2602->master_substream == substream)
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ssm2602->master_substream = ssm2602->slave_substream;
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ssm2602->slave_substream = NULL;
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/* deactivate */
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if (!codec->active)
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ssm2602_write(codec, SSM2602_ACTIVE, 0);
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if (ssm2602->master_substream == substream)
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ssm2602->master_substream = ssm2602->slave_substream;
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ssm2602->slave_substream = NULL;
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}
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static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
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{
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struct snd_soc_codec *codec = dai->codec;
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u16 mute_reg = ssm2602_read_reg_cache(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
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if (mute)
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ssm2602_write(codec, SSM2602_APDIGI,
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mute_reg | APDIGI_ENABLE_DAC_MUTE);
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else
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ssm2602_write(codec, SSM2602_APDIGI, mute_reg);
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return 0;
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}
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static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct ssm2602_priv *ssm2602 = codec->private_data;
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switch (freq) {
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case 11289600:
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case 12000000:
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case 12288000:
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case 16934400:
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case 18432000:
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ssm2602->sysclk = freq;
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return 0;
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}
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return -EINVAL;
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}
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static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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u16 iface = 0;
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/* set master/slave audio interface */
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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iface |= 0x0040;
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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break;
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default:
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return -EINVAL;
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}
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/* interface format */
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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iface |= 0x0002;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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iface |= 0x0001;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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iface |= 0x0013;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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iface |= 0x0003;
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break;
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default:
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return -EINVAL;
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}
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/* clock inversion */
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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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_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,
|
|
.prepare = ssm2602_pcm_prepare,
|
|
.hw_params = ssm2602_hw_params,
|
|
.shutdown = ssm2602_shutdown,
|
|
.digital_mute = ssm2602_mute,
|
|
.set_sysclk = ssm2602_set_dai_sysclk,
|
|
.set_fmt = ssm2602_set_dai_fmt,
|
|
};
|
|
|
|
struct snd_soc_dai ssm2602_dai = {
|
|
.name = "SSM2602",
|
|
.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,
|
|
};
|
|
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->card->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->card->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->card->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);
|
|
|
|
snd_soc_add_controls(codec, ssm2602_snd_controls,
|
|
ARRAY_SIZE(ssm2602_snd_controls));
|
|
ssm2602_add_widgets(codec);
|
|
ret = snd_soc_init_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->card->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->card->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->card->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);
|
|
|
|
static int __init ssm2602_modinit(void)
|
|
{
|
|
return snd_soc_register_dai(&ssm2602_dai);
|
|
}
|
|
module_init(ssm2602_modinit);
|
|
|
|
static void __exit ssm2602_exit(void)
|
|
{
|
|
snd_soc_unregister_dai(&ssm2602_dai);
|
|
}
|
|
module_exit(ssm2602_exit);
|
|
|
|
MODULE_DESCRIPTION("ASoC ssm2602 driver");
|
|
MODULE_AUTHOR("Cliff Cai");
|
|
MODULE_LICENSE("GPL");
|