![Lars-Peter Clausen](/assets/img/avatar_default.png)
This patch adds support for the JZ4740 internal codec. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
512 lines
13 KiB
C
512 lines
13 KiB
C
/*
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* Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
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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 version 2 as
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* published by the Free Software Foundation.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/delay.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/initval.h>
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#include <sound/soc-dapm.h>
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#include <sound/soc.h>
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#define JZ4740_REG_CODEC_1 0x0
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#define JZ4740_REG_CODEC_2 0x1
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#define JZ4740_CODEC_1_LINE_ENABLE BIT(29)
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#define JZ4740_CODEC_1_MIC_ENABLE BIT(28)
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#define JZ4740_CODEC_1_SW1_ENABLE BIT(27)
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#define JZ4740_CODEC_1_ADC_ENABLE BIT(26)
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#define JZ4740_CODEC_1_SW2_ENABLE BIT(25)
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#define JZ4740_CODEC_1_DAC_ENABLE BIT(24)
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#define JZ4740_CODEC_1_VREF_DISABLE BIT(20)
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#define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19)
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#define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18)
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#define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17)
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#define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16)
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#define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14)
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#define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
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#define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12)
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#define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10))
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#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9)
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#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8)
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#define JZ4740_CODEC_1_SUSPEND BIT(1)
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#define JZ4740_CODEC_1_RESET BIT(0)
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#define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29
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#define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28
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#define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27
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#define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26
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#define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25
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#define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24
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#define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
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#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8
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#define JZ4740_CODEC_2_INPUT_VOLUME_MASK 0x1f0000
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#define JZ4740_CODEC_2_SAMPLE_RATE_MASK 0x000f00
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#define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK 0x000030
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#define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK 0x000003
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#define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET 16
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#define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET 8
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#define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET 4
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#define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET 0
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static const uint32_t jz4740_codec_regs[] = {
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0x021b2302, 0x00170803,
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};
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struct jz4740_codec {
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void __iomem *base;
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struct resource *mem;
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uint32_t reg_cache[2];
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struct snd_soc_codec codec;
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};
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static inline struct jz4740_codec *codec_to_jz4740(struct snd_soc_codec *codec)
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{
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return container_of(codec, struct jz4740_codec, codec);
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}
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static unsigned int jz4740_codec_read(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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struct jz4740_codec *jz4740_codec = codec_to_jz4740(codec);
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return readl(jz4740_codec->base + (reg << 2));
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}
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static int jz4740_codec_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int val)
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{
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struct jz4740_codec *jz4740_codec = codec_to_jz4740(codec);
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jz4740_codec->reg_cache[reg] = val;
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writel(val, jz4740_codec->base + (reg << 2));
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return 0;
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}
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static const struct snd_kcontrol_new jz4740_codec_controls[] = {
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SOC_SINGLE("Master Playback Volume", JZ4740_REG_CODEC_2,
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JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0),
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SOC_SINGLE("Master Capture Volume", JZ4740_REG_CODEC_2,
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JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0),
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SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
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SOC_SINGLE("Mic Capture Volume", JZ4740_REG_CODEC_2,
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JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0),
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};
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static const struct snd_kcontrol_new jz4740_codec_output_controls[] = {
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SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
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SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
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};
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static const struct snd_kcontrol_new jz4740_codec_input_controls[] = {
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SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
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SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
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};
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static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = {
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SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0),
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SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0),
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SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1,
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jz4740_codec_output_controls,
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ARRAY_SIZE(jz4740_codec_output_controls)),
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SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
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jz4740_codec_input_controls,
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ARRAY_SIZE(jz4740_codec_input_controls)),
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SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
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SND_SOC_DAPM_OUTPUT("LOUT"),
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SND_SOC_DAPM_OUTPUT("ROUT"),
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SND_SOC_DAPM_INPUT("MIC"),
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SND_SOC_DAPM_INPUT("LIN"),
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SND_SOC_DAPM_INPUT("RIN"),
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};
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static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = {
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{"Line Input", NULL, "LIN"},
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{"Line Input", NULL, "RIN"},
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{"Input Mixer", "Line Capture Switch", "Line Input"},
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{"Input Mixer", "Mic Capture Switch", "MIC"},
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{"ADC", NULL, "Input Mixer"},
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{"Output Mixer", "Bypass Switch", "Input Mixer"},
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{"Output Mixer", "DAC Switch", "DAC"},
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{"LOUT", NULL, "Output Mixer"},
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{"ROUT", NULL, "Output Mixer"},
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};
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static int jz4740_codec_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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uint32_t val;
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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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switch (params_rate(params)) {
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case 8000:
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val = 0;
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break;
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case 11025:
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val = 1;
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break;
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case 12000:
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val = 2;
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break;
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case 16000:
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val = 3;
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break;
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case 22050:
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val = 4;
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break;
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case 24000:
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val = 5;
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break;
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case 32000:
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val = 6;
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break;
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case 44100:
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val = 7;
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break;
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case 48000:
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val = 8;
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break;
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default:
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return -EINVAL;
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}
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val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET;
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snd_soc_update_bits(codec, JZ4740_REG_CODEC_2,
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JZ4740_CODEC_2_SAMPLE_RATE_MASK, val);
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return 0;
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}
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static struct snd_soc_dai_ops jz4740_codec_dai_ops = {
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.hw_params = jz4740_codec_hw_params,
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};
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struct snd_soc_dai jz4740_codec_dai = {
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.name = "jz4740",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
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},
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.ops = &jz4740_codec_dai_ops,
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.symmetric_rates = 1,
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};
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EXPORT_SYMBOL_GPL(jz4740_codec_dai);
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static void jz4740_codec_wakeup(struct snd_soc_codec *codec)
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{
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int i;
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uint32_t *cache = codec->reg_cache;
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snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET);
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udelay(2);
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snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0);
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for (i = 0; i < ARRAY_SIZE(jz4740_codec_regs); ++i)
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jz4740_codec_write(codec, i, cache[i]);
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}
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static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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unsigned int mask;
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unsigned int value;
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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mask = JZ4740_CODEC_1_VREF_DISABLE |
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JZ4740_CODEC_1_VREF_AMP_DISABLE |
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JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
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value = 0;
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snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
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break;
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case SND_SOC_BIAS_STANDBY:
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/* The only way to clear the suspend flag is to reset the codec */
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if (codec->bias_level == SND_SOC_BIAS_OFF)
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jz4740_codec_wakeup(codec);
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mask = JZ4740_CODEC_1_VREF_DISABLE |
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JZ4740_CODEC_1_VREF_AMP_DISABLE |
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JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
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value = JZ4740_CODEC_1_VREF_DISABLE |
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JZ4740_CODEC_1_VREF_AMP_DISABLE |
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JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
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snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
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break;
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case SND_SOC_BIAS_OFF:
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mask = JZ4740_CODEC_1_SUSPEND;
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value = JZ4740_CODEC_1_SUSPEND;
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snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
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break;
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default:
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break;
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}
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codec->bias_level = level;
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return 0;
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}
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static struct snd_soc_codec *jz4740_codec_codec;
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static int jz4740_codec_dev_probe(struct platform_device *pdev)
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{
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int ret;
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = jz4740_codec_codec;
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BUG_ON(!codec);
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socdev->card->codec = codec;
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret) {
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dev_err(&pdev->dev, "Failed to create pcms: %d\n", ret);
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return ret;
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}
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snd_soc_add_controls(codec, jz4740_codec_controls,
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ARRAY_SIZE(jz4740_codec_controls));
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snd_soc_dapm_new_controls(codec, jz4740_codec_dapm_widgets,
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ARRAY_SIZE(jz4740_codec_dapm_widgets));
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snd_soc_dapm_add_routes(codec, jz4740_codec_dapm_routes,
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ARRAY_SIZE(jz4740_codec_dapm_routes));
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snd_soc_dapm_new_widgets(codec);
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return 0;
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}
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static int jz4740_codec_dev_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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return 0;
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}
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#ifdef CONFIG_PM_SLEEP
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static int jz4740_codec_suspend(struct platform_device *pdev, pm_message_t state)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
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}
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static int jz4740_codec_resume(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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}
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#else
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#define jz4740_codec_suspend NULL
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#define jz4740_codec_resume NULL
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#endif
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struct snd_soc_codec_device soc_codec_dev_jz4740_codec = {
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.probe = jz4740_codec_dev_probe,
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.remove = jz4740_codec_dev_remove,
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.suspend = jz4740_codec_suspend,
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.resume = jz4740_codec_resume,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_jz4740_codec);
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static int __devinit jz4740_codec_probe(struct platform_device *pdev)
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{
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int ret;
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struct jz4740_codec *jz4740_codec;
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struct snd_soc_codec *codec;
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struct resource *mem;
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jz4740_codec = kzalloc(sizeof(*jz4740_codec), GFP_KERNEL);
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if (!jz4740_codec)
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return -ENOMEM;
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mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!mem) {
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dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
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ret = -ENOENT;
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goto err_free_codec;
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}
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mem = request_mem_region(mem->start, resource_size(mem), pdev->name);
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if (!mem) {
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dev_err(&pdev->dev, "Failed to request mmio memory region\n");
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ret = -EBUSY;
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goto err_free_codec;
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}
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jz4740_codec->base = ioremap(mem->start, resource_size(mem));
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if (!jz4740_codec->base) {
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dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
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ret = -EBUSY;
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goto err_release_mem_region;
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}
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jz4740_codec->mem = mem;
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jz4740_codec_dai.dev = &pdev->dev;
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codec = &jz4740_codec->codec;
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codec->dev = &pdev->dev;
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codec->name = "jz4740";
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codec->owner = THIS_MODULE;
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codec->read = jz4740_codec_read;
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codec->write = jz4740_codec_write;
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codec->set_bias_level = jz4740_codec_set_bias_level;
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codec->bias_level = SND_SOC_BIAS_OFF;
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codec->dai = &jz4740_codec_dai;
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codec->num_dai = 1;
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codec->reg_cache = jz4740_codec->reg_cache;
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codec->reg_cache_size = 2;
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memcpy(codec->reg_cache, jz4740_codec_regs, sizeof(jz4740_codec_regs));
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mutex_init(&codec->mutex);
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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jz4740_codec_codec = codec;
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snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
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JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);
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platform_set_drvdata(pdev, jz4740_codec);
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ret = snd_soc_register_codec(codec);
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if (ret) {
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dev_err(&pdev->dev, "Failed to register codec\n");
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goto err_iounmap;
|
|
}
|
|
|
|
ret = snd_soc_register_dai(&jz4740_codec_dai);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Failed to register codec dai\n");
|
|
goto err_unregister_codec;
|
|
}
|
|
|
|
jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
return 0;
|
|
|
|
err_unregister_codec:
|
|
snd_soc_unregister_codec(codec);
|
|
err_iounmap:
|
|
iounmap(jz4740_codec->base);
|
|
err_release_mem_region:
|
|
release_mem_region(mem->start, resource_size(mem));
|
|
err_free_codec:
|
|
kfree(jz4740_codec);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit jz4740_codec_remove(struct platform_device *pdev)
|
|
{
|
|
struct jz4740_codec *jz4740_codec = platform_get_drvdata(pdev);
|
|
struct resource *mem = jz4740_codec->mem;
|
|
|
|
snd_soc_unregister_dai(&jz4740_codec_dai);
|
|
snd_soc_unregister_codec(&jz4740_codec->codec);
|
|
|
|
iounmap(jz4740_codec->base);
|
|
release_mem_region(mem->start, resource_size(mem));
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(jz4740_codec);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver jz4740_codec_driver = {
|
|
.probe = jz4740_codec_probe,
|
|
.remove = __devexit_p(jz4740_codec_remove),
|
|
.driver = {
|
|
.name = "jz4740-codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init jz4740_codec_init(void)
|
|
{
|
|
return platform_driver_register(&jz4740_codec_driver);
|
|
}
|
|
module_init(jz4740_codec_init);
|
|
|
|
static void __exit jz4740_codec_exit(void)
|
|
{
|
|
platform_driver_unregister(&jz4740_codec_driver);
|
|
}
|
|
module_exit(jz4740_codec_exit);
|
|
|
|
MODULE_DESCRIPTION("JZ4740 SoC internal codec driver");
|
|
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:jz4740-codec");
|