diff options
Diffstat (limited to 'sound/arm/pxa2xx-ac97.c')
| -rw-r--r-- | sound/arm/pxa2xx-ac97.c | 49 |
1 files changed, 41 insertions, 8 deletions
diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c index 5d86e680975..8704e2825b1 100644 --- a/sound/arm/pxa2xx-ac97.c +++ b/sound/arm/pxa2xx-ac97.c @@ -16,6 +16,7 @@ #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> @@ -27,6 +28,7 @@ #include <linux/mutex.h> #include <asm/hardware.h> #include <asm/arch/pxa-regs.h> +#include <asm/arch/pxa2xx-gpio.h> #include <asm/arch/audio.h> #include "pxa2xx-pcm.h" @@ -35,6 +37,10 @@ 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: @@ -112,9 +118,9 @@ static void pxa2xx_ac97_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 @@ -259,7 +265,7 @@ static int pxa2xx_ac97_do_suspend(struct snd_card *card, pm_message_t state) if (platform_ops && platform_ops->suspend) platform_ops->suspend(platform_ops->priv); GCR |= GCR_ACLINK_OFF; - pxa_set_cken(CKEN_AC97, 0); + clk_disable(ac97_clk); return 0; } @@ -268,7 +274,7 @@ static int pxa2xx_ac97_do_resume(struct snd_card *card) { pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; - pxa_set_cken(CKEN_AC97, 1); + clk_enable(ac97_clk); if (platform_ops && platform_ops->resume) platform_ops->resume(platform_ops->priv); snd_ac97_resume(pxa2xx_ac97_ac97); @@ -335,8 +341,21 @@ static int __devinit pxa2xx_ac97_probe(struct platform_device *dev) #ifdef CONFIG_PXA27x /* Use GPIO 113 as AC97 Reset on Bulverde */ pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT); + ac97conf_clk = clk_get(&dev->dev, "AC97CONFCLK"); + if (IS_ERR(ac97conf_clk)) { + ret = PTR_ERR(ac97conf_clk); + ac97conf_clk = NULL; + goto err; + } #endif - pxa_set_cken(CKEN_AC97, 1); + + ac97_clk = clk_get(&dev->dev, "AC97CLK"); + if (IS_ERR(ac97_clk)) { + ret = PTR_ERR(ac97_clk); + ac97_clk = NULL; + goto err; + } + clk_enable(ac97_clk); ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); if (ret) @@ -361,11 +380,19 @@ static int __devinit pxa2xx_ac97_probe(struct platform_device *dev) err: if (card) snd_card_free(card); - if (CKEN & (1 << CKEN_AC97)) { + if (ac97_clk) { GCR |= GCR_ACLINK_OFF; free_irq(IRQ_AC97, NULL); - pxa_set_cken(CKEN_AC97, 0); + clk_disable(ac97_clk); + clk_put(ac97_clk); + ac97_clk = NULL; + } +#ifdef CONFIG_PXA27x + if (ac97conf_clk) { + clk_put(ac97conf_clk); + ac97conf_clk = NULL; } +#endif return ret; } @@ -378,7 +405,13 @@ static int __devexit pxa2xx_ac97_remove(struct platform_device *dev) platform_set_drvdata(dev, NULL); GCR |= GCR_ACLINK_OFF; free_irq(IRQ_AC97, NULL); - pxa_set_cken(CKEN_AC97, 0); + clk_disable(ac97_clk); + clk_put(ac97_clk); + ac97_clk = NULL; +#ifdef CONFIG_PXA27x + clk_put(ac97conf_clk); + ac97conf_clk = NULL; +#endif } return 0; |