diff options
Diffstat (limited to 'sound/soc/s3c24xx/s3c2412-i2s.c')
| -rw-r--r-- | sound/soc/s3c24xx/s3c2412-i2s.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/sound/soc/s3c24xx/s3c2412-i2s.c b/sound/soc/s3c24xx/s3c2412-i2s.c deleted file mode 100644 index 4a861cfa52c5..000000000000 --- a/sound/soc/s3c24xx/s3c2412-i2s.c +++ /dev/null @@ -1,212 +0,0 @@ -/* sound/soc/s3c24xx/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/init.h> -#include <linux/module.h> -#include <linux/device.h> -#include <linux/delay.h> -#include <linux/gpio.h> -#include <linux/clk.h> -#include <linux/kernel.h> -#include <linux/io.h> - -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/initval.h> -#include <sound/soc.h> -#include <mach/hardware.h> - -#include <mach/regs-gpio.h> -#include <mach/dma.h> - -#include "s3c-dma.h" -#include "regs-i2s-v2.h" -#include "s3c2412-i2s.h" - -#define S3C2412_I2S_DEBUG 0 - -static struct s3c2410_dma_client s3c2412_dma_client_out = { - .name = "I2S PCM Stereo out" -}; - -static struct s3c2410_dma_client s3c2412_dma_client_in = { - .name = "I2S PCM Stereo in" -}; - -static struct s3c_dma_params s3c2412_i2s_pcm_stereo_out = { - .client = &s3c2412_dma_client_out, - .channel = DMACH_I2S_OUT, - .dma_addr = S3C2410_PA_IIS + S3C2412_IISTXD, - .dma_size = 4, -}; - -static struct s3c_dma_params s3c2412_i2s_pcm_stereo_in = { - .client = &s3c2412_dma_client_in, - .channel = DMACH_I2S_IN, - .dma_addr = S3C2410_PA_IIS + S3C2412_IISRXD, - .dma_size = 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__); - - 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 = clk_get(dai->dev, "i2sclk"); - if (s3c2412_i2s.iis_cclk == NULL) { - pr_err("failed to get i2sclk clock\n"); - iounmap(s3c2412_i2s.regs); - return -ENODEV; - } - - /* Set MPLL as the source for IIS CLK */ - - clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll")); - clk_enable(s3c2412_i2s.iis_cclk); - - s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk; - - /* Configure the I2S pins in correct mode */ - s3c2410_gpio_cfgpin(S3C2410_GPE0, S3C2410_GPE0_I2SLRCK); - s3c2410_gpio_cfgpin(S3C2410_GPE1, S3C2410_GPE1_I2SSCLK); - s3c2410_gpio_cfgpin(S3C2410_GPE2, S3C2410_GPE2_CDCLK); - s3c2410_gpio_cfgpin(S3C2410_GPE3, S3C2410_GPE3_I2SSDI); - s3c2410_gpio_cfgpin(S3C2410_GPE4, S3C2410_GPE4_I2SSDO); - - return 0; -} - -static int s3c2412_i2s_remove(struct snd_soc_dai *dai) -{ - clk_disable(s3c2412_i2s.iis_cclk); - clk_put(s3c2412_i2s.iis_cclk); - iounmap(s3c2412_i2s.regs); - - 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); - struct s3c_dma_params *dma_data; - u32 iismod; - - pr_debug("Entered %s\n", __func__); - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - dma_data = i2s->dma_playback; - else - dma_data = i2s->dma_capture; - - snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); - - iismod = readl(i2s->regs + S3C2412_IISMOD); - pr_debug("%s: r: IISMOD: %x\n", __func__, iismod); - - switch (params_format(params)) { - case SNDRV_PCM_FORMAT_S8: - iismod |= S3C2412_IISMOD_8BIT; - break; - case SNDRV_PCM_FORMAT_S16_LE: - 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 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 __devinit int s3c2412_iis_dev_probe(struct platform_device *pdev) -{ - return snd_soc_register_dai(&pdev->dev, &s3c2412_i2s_dai); -} - -static __devexit int s3c2412_iis_dev_remove(struct platform_device *pdev) -{ - snd_soc_unregister_dai(&pdev->dev); - return 0; -} - -static struct platform_driver s3c2412_iis_driver = { - .probe = s3c2412_iis_dev_probe, - .remove = s3c2412_iis_dev_remove, - .driver = { - .name = "s3c2412-iis", - .owner = THIS_MODULE, - }, -}; - -static int __init s3c2412_i2s_init(void) -{ - return platform_driver_register(&s3c2412_iis_driver); -} -module_init(s3c2412_i2s_init); - -static void __exit s3c2412_i2s_exit(void) -{ - platform_driver_unregister(&s3c2412_iis_driver); -} -module_exit(s3c2412_i2s_exit); - -/* Module information */ -MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); -MODULE_DESCRIPTION("S3C2412 I2S SoC Interface"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:s3c2412-iis"); |