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[ARM] 4834/3: Convert ASoC pxa2xx-ac97 driver to use the clock API 

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Mark Brown 2008-03-04 11:14:24 +01:00 committed by Russell King
parent 93873fbfd8
commit 942de47bfe
1 changed files with 38 additions and 11 deletions
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49
sound/soc/pxa/pxa2xx-ac97.c
View File

@ -15,6 +15,7 @@
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <sound/core.h>
@ -35,6 +36,10 @@
static DEFINE_MUTEX(car_mutex);
static DECLARE_WAIT_QUEUE_HEAD(gsr_wq);
static volatile long gsr_bits;
static struct clk *ac97_clk;
#ifdef CONFIG_PXA27x
static struct clk *ac97conf_clk;
#endif
/*
* Beware PXA27x bugs:
@ -159,9 +164,9 @@ static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
gsr_bits = 0;
#ifdef CONFIG_PXA27x
/* PXA27x Developers Manual section 13.5.2.2.1 */
pxa_set_cken(CKEN_AC97CONF, 1);
clk_enable(ac97conf_clk);
udelay(5);
pxa_set_cken(CKEN_AC97CONF, 0);
clk_disable(ac97conf_clk);
GCR = GCR_COLD_RST;
udelay(50);
#else
@ -255,7 +260,7 @@ static int pxa2xx_ac97_suspend(struct platform_device *pdev,
struct snd_soc_cpu_dai *dai)
{
GCR |= GCR_ACLINK_OFF;
pxa_set_cken(CKEN_AC97, 0);
clk_disable(ac97_clk);
return 0;
}
@ -270,7 +275,7 @@ static int pxa2xx_ac97_resume(struct platform_device *pdev,
/* Use GPIO 113 as AC97 Reset on Bulverde */
pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
#endif
pxa_set_cken(CKEN_AC97, 1);
clk_enable(ac97_clk);
return 0;
}
@ -294,16 +299,32 @@ static int pxa2xx_ac97_probe(struct platform_device *pdev)
#ifdef CONFIG_PXA27x
/* Use GPIO 113 as AC97 Reset on Bulverde */
pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
ac97conf_clk = clk_get(&pdev->dev, "AC97CONFCLK");
if (IS_ERR(ac97conf_clk)) {
ret = PTR_ERR(ac97conf_clk);
ac97conf_clk = NULL;
goto err_irq;
}
#endif
pxa_set_cken(CKEN_AC97, 1);
ac97_clk = clk_get(&pdev->dev, "AC97CLK");
if (IS_ERR(ac97_clk)) {
ret = PTR_ERR(ac97_clk);
ac97_clk = NULL;
goto err_irq;
}
return 0;
err:
if (CKEN & (1 << CKEN_AC97)) {
GCR |= GCR_ACLINK_OFF;
free_irq(IRQ_AC97, NULL);
pxa_set_cken(CKEN_AC97, 0);
err_irq:
GCR |= GCR_ACLINK_OFF;
#ifdef CONFIG_PXA27x
if (ac97conf_clk) {
clk_put(ac97conf_clk);
ac97conf_clk = NULL;
}
#endif
free_irq(IRQ_AC97, NULL);
err:
return ret;
}
@ -311,7 +332,13 @@ static void pxa2xx_ac97_remove(struct platform_device *pdev)
{
GCR |= GCR_ACLINK_OFF;
free_irq(IRQ_AC97, NULL);
pxa_set_cken(CKEN_AC97, 0);
#ifdef CONFIG_PXA27x
clk_put(ac97conf_clk);
ac97conf_clk = NULL;
#endif
clk_disable(ac97_clk);
clk_put(ac97_clk);
ac97_clk = NULL;
}
static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,