diff options
Diffstat (limited to 'sound/soc/samsung/s3c2412-i2s.c')
| -rw-r--r-- | sound/soc/samsung/s3c2412-i2s.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c deleted file mode 100644 index cc0840fff5aa..000000000000 --- a/sound/soc/samsung/s3c2412-i2s.c +++ /dev/null @@ -1,208 +0,0 @@ -/* sound/soc/samsung/s3c2412-i2s.c - * - * ALSA Soc Audio Layer - S3C2412 I2S driver - * - * Copyright (c) 2006 Wolfson Microelectronics PLC. - * Graeme Gregory graeme.gregory@wolfsonmicro.com - * linux@wolfsonmicro.com - * - * Copyright (c) 2007, 2004-2005 Simtec Electronics - * http://armlinux.simtec.co.uk/ - * Ben Dooks <ben@simtec.co.uk> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/delay.h> -#include <linux/gpio.h> -#include <linux/clk.h> -#include <linux/io.h> -#include <linux/module.h> - -#include <sound/soc.h> -#include <sound/pcm_params.h> - -#include <mach/gpio-samsung.h> -#include <plat/gpio-cfg.h> - -#include "dma.h" -#include "regs-i2s-v2.h" -#include "s3c2412-i2s.h" - -#include <linux/platform_data/asoc-s3c.h> - -static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_out = { - .chan_name = "tx", - .addr_width = 4, -}; - -static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_in = { - .chan_name = "rx", - .addr_width = 4, -}; - -static struct s3c_i2sv2_info s3c2412_i2s; - -static int s3c2412_i2s_probe(struct snd_soc_dai *dai) -{ - int ret; - - pr_debug("Entered %s\n", __func__); - - snd_soc_dai_init_dma_data(dai, &s3c2412_i2s_pcm_stereo_out, - &s3c2412_i2s_pcm_stereo_in); - - ret = s3c_i2sv2_probe(dai, &s3c2412_i2s, S3C2410_PA_IIS); - if (ret) - return ret; - - s3c2412_i2s.dma_capture = &s3c2412_i2s_pcm_stereo_in; - s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out; - - s3c2412_i2s.iis_cclk = devm_clk_get(dai->dev, "i2sclk"); - if (IS_ERR(s3c2412_i2s.iis_cclk)) { - pr_err("failed to get i2sclk clock\n"); - ret = PTR_ERR(s3c2412_i2s.iis_cclk); - goto err; - } - - /* Set MPLL as the source for IIS CLK */ - - clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll")); - ret = clk_prepare_enable(s3c2412_i2s.iis_cclk); - if (ret) - goto err; - - /* Configure the I2S pins (GPE0...GPE4) in correct mode */ - s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2), - S3C_GPIO_PULL_NONE); - - return 0; - -err: - s3c_i2sv2_cleanup(dai, &s3c2412_i2s); - - return ret; -} - -static int s3c2412_i2s_remove(struct snd_soc_dai *dai) -{ - clk_disable_unprepare(s3c2412_i2s.iis_cclk); - s3c_i2sv2_cleanup(dai, &s3c2412_i2s); - - return 0; -} - -static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - struct snd_soc_dai *cpu_dai) -{ - struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai); - u32 iismod; - - pr_debug("Entered %s\n", __func__); - - iismod = readl(i2s->regs + S3C2412_IISMOD); - pr_debug("%s: r: IISMOD: %x\n", __func__, iismod); - - switch (params_width(params)) { - case 8: - iismod |= S3C2412_IISMOD_8BIT; - break; - case 16: - iismod &= ~S3C2412_IISMOD_8BIT; - break; - } - - writel(iismod, i2s->regs + S3C2412_IISMOD); - pr_debug("%s: w: IISMOD: %x\n", __func__, iismod); - - return 0; -} - -#define S3C2412_I2S_RATES \ - (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \ - SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ - SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) - -static const struct snd_soc_dai_ops s3c2412_i2s_dai_ops = { - .hw_params = s3c2412_i2s_hw_params, -}; - -static struct snd_soc_dai_driver s3c2412_i2s_dai = { - .probe = s3c2412_i2s_probe, - .remove = s3c2412_i2s_remove, - .playback = { - .channels_min = 2, - .channels_max = 2, - .rates = S3C2412_I2S_RATES, - .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE, - }, - .capture = { - .channels_min = 2, - .channels_max = 2, - .rates = S3C2412_I2S_RATES, - .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE, - }, - .ops = &s3c2412_i2s_dai_ops, -}; - -static const struct snd_soc_component_driver s3c2412_i2s_component = { - .name = "s3c2412-i2s", -}; - -static int s3c2412_iis_dev_probe(struct platform_device *pdev) -{ - int ret = 0; - struct resource *res; - struct s3c_audio_pdata *pdata = dev_get_platdata(&pdev->dev); - - if (!pdata) { - dev_err(&pdev->dev, "missing platform data"); - return -ENXIO; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - s3c2412_i2s.regs = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(s3c2412_i2s.regs)) - return PTR_ERR(s3c2412_i2s.regs); - - s3c2412_i2s_pcm_stereo_out.addr = res->start + S3C2412_IISTXD; - s3c2412_i2s_pcm_stereo_out.filter_data = pdata->dma_playback; - s3c2412_i2s_pcm_stereo_in.addr = res->start + S3C2412_IISRXD; - s3c2412_i2s_pcm_stereo_in.filter_data = pdata->dma_capture; - - ret = samsung_asoc_dma_platform_register(&pdev->dev, - pdata->dma_filter, - NULL, NULL); - if (ret) { - pr_err("failed to register the DMA: %d\n", ret); - return ret; - } - - ret = s3c_i2sv2_register_component(&pdev->dev, -1, - &s3c2412_i2s_component, - &s3c2412_i2s_dai); - if (ret) - pr_err("failed to register the dai\n"); - - return ret; -} - -static struct platform_driver s3c2412_iis_driver = { - .probe = s3c2412_iis_dev_probe, - .driver = { - .name = "s3c2412-iis", - }, -}; - -module_platform_driver(s3c2412_iis_driver); - -/* Module information */ -MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); -MODULE_DESCRIPTION("S3C2412 I2S SoC Interface"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:s3c2412-iis"); |