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[ARM] 5063/1: pxa: add clk support for pxa2xx I2S

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Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
eric miao 2008-05-26 03:28:09 +01:00 committed by Russell King
parent b8291ad07a
commit 5a2cc50f16
1 changed files with 10 additions and 2 deletions
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12
sound/soc/pxa/pxa2xx-i2s.c
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@ -18,6 +18,7 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/device.h> #include <linux/device.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/clk.h>
#include <sound/core.h> #include <sound/core.h>
#include <sound/pcm.h> #include <sound/pcm.h>
#include <sound/initval.h> #include <sound/initval.h>
@ -40,6 +41,7 @@ struct pxa_i2s_port {
u32 fmt; u32 fmt;
}; };
static struct pxa_i2s_port pxa_i2s; static struct pxa_i2s_port pxa_i2s;
static struct clk *clk_i2s;
static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = { static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = {
.name = "I2S PCM Stereo out", .name = "I2S PCM Stereo out",
@ -82,6 +84,10 @@ static int pxa2xx_i2s_startup(struct snd_pcm_substream *substream)
struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai; struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
clk_i2s = clk_get(NULL, "I2SCLK");
if (IS_ERR(clk_i2s))
return PTR_ERR(clk_i2s);
if (!cpu_dai->active) { if (!cpu_dai->active) {
SACR0 |= SACR0_RST; SACR0 |= SACR0_RST;
SACR0 = 0; SACR0 = 0;
@ -149,7 +155,7 @@ static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
pxa_gpio_mode(gpio_bus[pxa_i2s.master].tx); pxa_gpio_mode(gpio_bus[pxa_i2s.master].tx);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].frm); pxa_gpio_mode(gpio_bus[pxa_i2s.master].frm);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].clk); pxa_gpio_mode(gpio_bus[pxa_i2s.master].clk);
pxa_set_cken(CKEN_I2S, 1); clk_enable(clk_i2s);
pxa_i2s_wait(); pxa_i2s_wait();
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
@ -234,8 +240,10 @@ static void pxa2xx_i2s_shutdown(struct snd_pcm_substream *substream)
if (SACR1 & (SACR1_DREC | SACR1_DRPL)) { if (SACR1 & (SACR1_DREC | SACR1_DRPL)) {
SACR0 &= ~SACR0_ENB; SACR0 &= ~SACR0_ENB;
pxa_i2s_wait(); pxa_i2s_wait();
pxa_set_cken(CKEN_I2S, 0); clk_disable(clk_i2s);
} }
clk_put(clk_i2s);
} }
#ifdef CONFIG_PM #ifdef CONFIG_PM