ASoC: S3C64XX: IISv4: Add CPU driver
Add the CPU driver for the IISv4 block found on S3C6410. For now, the driver is almost a copy of s3c64xx-i2s.c but it should diverge as more IISv4 specific stuff is added. Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Jassi Brar
Mark Brown
parent
bd843edf81
commit
af56b1c27b
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@ -24,6 +24,11 @@ config SND_S3C64XX_SOC_I2S
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select SND_S3C_I2SV2_SOC
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select S3C64XX_DMA
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config SND_S3C64XX_SOC_I2S_V4
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tristate
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select SND_S3C_I2SV2_SOC
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select S3C64XX_DMA
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config SND_S3C_SOC_PCM
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tristate
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@ -4,6 +4,7 @@ snd-soc-s3c24xx-i2s-objs := s3c24xx-i2s.o
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snd-soc-s3c2412-i2s-objs := s3c2412-i2s.o
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snd-soc-s3c64xx-i2s-objs := s3c64xx-i2s.o
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snd-soc-s3c-ac97-objs := s3c-ac97.o
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snd-soc-s3c64xx-i2s-v4-objs := s3c64xx-i2s-v4.o
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snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o
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snd-soc-s3c-pcm-objs := s3c-pcm.o
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@ -12,6 +13,7 @@ obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o
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obj-$(CONFIG_SND_S3C_SOC_AC97) += snd-soc-s3c-ac97.o
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obj-$(CONFIG_SND_S3C2412_SOC_I2S) += snd-soc-s3c2412-i2s.o
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obj-$(CONFIG_SND_S3C64XX_SOC_I2S) += snd-soc-s3c64xx-i2s.o
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obj-$(CONFIG_SND_S3C64XX_SOC_I2S_V4) += snd-soc-s3c64xx-i2s-v4.o
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obj-$(CONFIG_SND_S3C_I2SV2_SOC) += snd-soc-s3c-i2s-v2.o
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obj-$(CONFIG_SND_S3C_SOC_PCM) += snd-soc-s3c-pcm.o
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@ -0,0 +1,209 @@
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/* sound/soc/s3c24xx/s3c64xx-i2s-v4.c
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*
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* ALSA SoC Audio Layer - S3C64XX I2Sv4 driver
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* Copyright (c) 2010 Samsung Electronics Co. Ltd
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* Author: Jaswinder Singh <jassi.brar@samsung.com>
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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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#include <linux/clk.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <sound/soc.h>
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#include <sound/pcm_params.h>
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#include <mach/gpio-bank-c.h>
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#include <mach/gpio-bank-h.h>
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#include <plat/gpio-cfg.h>
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#include <mach/map.h>
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#include <mach/dma.h>
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#include "s3c-dma.h"
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#include "regs-i2s-v2.h"
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#include "s3c64xx-i2s.h"
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static struct s3c2410_dma_client s3c64xx_dma_client_out = {
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.name = "I2Sv4 PCM Stereo out"
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};
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static struct s3c2410_dma_client s3c64xx_dma_client_in = {
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.name = "I2Sv4 PCM Stereo in"
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};
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static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_out;
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static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_in;
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static struct s3c_i2sv2_info s3c64xx_i2sv4;
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struct snd_soc_dai s3c64xx_i2s_v4_dai;
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EXPORT_SYMBOL_GPL(s3c64xx_i2s_v4_dai);
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static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
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{
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return cpu_dai->private_data;
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}
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static int s3c64xx_i2sv4_probe(struct platform_device *pdev,
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struct snd_soc_dai *dai)
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{
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/* configure GPIO for i2s port */
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s3c_gpio_cfgpin(S3C64XX_GPC(4), S3C64XX_GPC4_I2S_V40_DO0);
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s3c_gpio_cfgpin(S3C64XX_GPC(5), S3C64XX_GPC5_I2S_V40_DO1);
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s3c_gpio_cfgpin(S3C64XX_GPC(7), S3C64XX_GPC7_I2S_V40_DO2);
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s3c_gpio_cfgpin(S3C64XX_GPH(6), S3C64XX_GPH6_I2S_V40_BCLK);
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s3c_gpio_cfgpin(S3C64XX_GPH(7), S3C64XX_GPH7_I2S_V40_CDCLK);
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s3c_gpio_cfgpin(S3C64XX_GPH(8), S3C64XX_GPH8_I2S_V40_LRCLK);
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s3c_gpio_cfgpin(S3C64XX_GPH(9), S3C64XX_GPH9_I2S_V40_DI);
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return 0;
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}
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static int s3c_i2sv4_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 *cpu_dai)
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{
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struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
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struct s3c_dma_params *dma_data;
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u32 iismod;
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dev_dbg(cpu_dai->dev, "Entered %s\n", __func__);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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dma_data = i2s->dma_playback;
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else
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dma_data = i2s->dma_capture;
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snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
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iismod = readl(i2s->regs + S3C2412_IISMOD);
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dev_dbg(cpu_dai->dev, "%s: r: IISMOD: %x\n", __func__, iismod);
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iismod &= ~S3C64XX_IISMOD_BLC_MASK;
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S8:
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iismod |= S3C64XX_IISMOD_BLC_8BIT;
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break;
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case SNDRV_PCM_FORMAT_S16_LE:
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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iismod |= S3C64XX_IISMOD_BLC_24BIT;
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break;
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}
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writel(iismod, i2s->regs + S3C2412_IISMOD);
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dev_dbg(cpu_dai->dev, "%s: w: IISMOD: %x\n", __func__, iismod);
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return 0;
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}
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static struct snd_soc_dai_ops s3c64xx_i2sv4_dai_ops = {
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.hw_params = s3c_i2sv4_hw_params,
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};
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static __devinit int s3c64xx_i2sv4_dev_probe(struct platform_device *pdev)
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{
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struct s3c_i2sv2_info *i2s;
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struct snd_soc_dai *dai;
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int ret;
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i2s = &s3c64xx_i2sv4;
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dai = &s3c64xx_i2s_v4_dai;
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if (dai->dev) {
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dev_dbg(dai->dev, "%s: \
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I2Sv4 instance already registered!\n", __func__);
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return -EBUSY;
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}
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dai->dev = &pdev->dev;
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dai->name = "s3c64xx-i2s-v4";
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dai->id = 0;
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dai->symmetric_rates = 1;
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dai->playback.channels_min = 2;
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dai->playback.channels_max = 2;
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dai->playback.rates = S3C64XX_I2S_RATES;
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dai->playback.formats = S3C64XX_I2S_FMTS;
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dai->capture.channels_min = 2;
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dai->capture.channels_max = 2;
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dai->capture.rates = S3C64XX_I2S_RATES;
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dai->capture.formats = S3C64XX_I2S_FMTS;
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dai->probe = s3c64xx_i2sv4_probe;
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dai->ops = &s3c64xx_i2sv4_dai_ops;
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i2s->feature |= S3C_FEATURE_CDCLKCON;
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i2s->dma_capture = &s3c64xx_i2sv4_pcm_stereo_in;
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i2s->dma_playback = &s3c64xx_i2sv4_pcm_stereo_out;
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i2s->dma_capture->channel = DMACH_HSI_I2SV40_RX;
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i2s->dma_capture->dma_addr = S3C64XX_PA_IISV4 + S3C2412_IISRXD;
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i2s->dma_playback->channel = DMACH_HSI_I2SV40_TX;
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i2s->dma_playback->dma_addr = S3C64XX_PA_IISV4 + S3C2412_IISTXD;
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i2s->dma_capture->client = &s3c64xx_dma_client_in;
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i2s->dma_capture->dma_size = 4;
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i2s->dma_playback->client = &s3c64xx_dma_client_out;
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i2s->dma_playback->dma_size = 4;
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i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
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if (IS_ERR(i2s->iis_cclk)) {
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dev_err(&pdev->dev, "failed to get audio-bus\n");
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ret = PTR_ERR(i2s->iis_cclk);
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goto err;
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}
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clk_enable(i2s->iis_cclk);
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ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
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if (ret)
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goto err_clk;
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ret = s3c_i2sv2_register_dai(dai);
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if (ret != 0)
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goto err_i2sv2;
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return 0;
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err_i2sv2:
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/* Not implemented for I2Sv2 core yet */
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err_clk:
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clk_put(i2s->iis_cclk);
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err:
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return ret;
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}
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static __devexit int s3c64xx_i2sv4_dev_remove(struct platform_device *pdev)
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{
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dev_err(&pdev->dev, "Device removal not yet supported\n");
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return 0;
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}
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static struct platform_driver s3c64xx_i2sv4_driver = {
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.probe = s3c64xx_i2sv4_dev_probe,
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.remove = s3c64xx_i2sv4_dev_remove,
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.driver = {
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.name = "s3c64xx-iis-v4",
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.owner = THIS_MODULE,
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},
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};
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static int __init s3c64xx_i2sv4_init(void)
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{
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return platform_driver_register(&s3c64xx_i2sv4_driver);
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}
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module_init(s3c64xx_i2sv4_init);
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static void __exit s3c64xx_i2sv4_exit(void)
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{
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platform_driver_unregister(&s3c64xx_i2sv4_driver);
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}
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module_exit(s3c64xx_i2sv4_exit);
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/* Module information */
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MODULE_AUTHOR("Jaswinder Singh, <jassi.brar@samsung.com>");
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MODULE_DESCRIPTION("S3C64XX I2Sv4 SoC Interface");
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MODULE_LICENSE("GPL");
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@ -37,5 +37,6 @@ struct clk;
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SNDRV_PCM_FMTBIT_S24_LE)
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extern struct snd_soc_dai s3c64xx_i2s_dai[];
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extern struct snd_soc_dai s3c64xx_i2s_v4_dai;
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#endif /* __SND_SOC_S3C24XX_S3C64XX_I2S_H */
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