diff options
Diffstat (limited to 'sound/soc/s3c24xx/s3c2412-i2s.c')
| -rw-r--r-- | sound/soc/s3c24xx/s3c2412-i2s.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/sound/soc/s3c24xx/s3c2412-i2s.c b/sound/soc/s3c24xx/s3c2412-i2s.c deleted file mode 100644 index 359e59346ba..00000000000 --- a/sound/soc/s3c24xx/s3c2412-i2s.c +++ /dev/null @@ -1,189 +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 <plat/regs-s3c2412-iis.h> - -#include <mach/regs-gpio.h> -#include <mach/dma.h> - -#include "s3c-dma.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; - -/* - * Set S3C2412 Clock source - */ -static int s3c2412_i2s_set_sysclk(struct snd_soc_dai *cpu_dai, - int clk_id, unsigned int freq, int dir) -{ - u32 iismod = readl(s3c2412_i2s.regs + S3C2412_IISMOD); - - pr_debug("%s(%p, %d, %u, %d)\n", __func__, cpu_dai, clk_id, - freq, dir); - - switch (clk_id) { - case S3C2412_CLKSRC_PCLK: - s3c2412_i2s.master = 1; - iismod &= ~S3C2412_IISMOD_MASTER_MASK; - iismod |= S3C2412_IISMOD_MASTER_INTERNAL; - break; - case S3C2412_CLKSRC_I2SCLK: - s3c2412_i2s.master = 0; - iismod &= ~S3C2412_IISMOD_MASTER_MASK; - iismod |= S3C2412_IISMOD_MASTER_EXTERNAL; - break; - default: - return -EINVAL; - } - - writel(iismod, s3c2412_i2s.regs + S3C2412_IISMOD); - return 0; -} - - -struct clk *s3c2412_get_iisclk(void) -{ - return s3c2412_i2s.iis_clk; -} -EXPORT_SYMBOL_GPL(s3c2412_get_iisclk); - - -static int s3c2412_i2s_probe(struct platform_device *pdev, - struct snd_soc_dai *dai) -{ - int ret; - - pr_debug("Entered %s\n", __func__); - - ret = s3c_i2sv2_probe(pdev, 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(&pdev->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; -} - -#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 = { - .set_sysclk = s3c2412_i2s_set_sysclk, -}; - -struct snd_soc_dai s3c2412_i2s_dai = { - .name = "s3c2412-i2s", - .id = 0, - .probe = s3c2412_i2s_probe, - .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, -}; -EXPORT_SYMBOL_GPL(s3c2412_i2s_dai); - -static int __init s3c2412_i2s_init(void) -{ - return s3c_i2sv2_register_dai(&s3c2412_i2s_dai); -} -module_init(s3c2412_i2s_init); - -static void __exit s3c2412_i2s_exit(void) -{ - snd_soc_unregister_dai(&s3c2412_i2s_dai); -} -module_exit(s3c2412_i2s_exit); - -/* Module information */ -MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); -MODULE_DESCRIPTION("S3C2412 I2S SoC Interface"); -MODULE_LICENSE("GPL"); |