summaryrefslogtreecommitdiff
path: root/sound/arm/pxa2xx-ac97.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-21 22:40:55 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-21 22:40:55 (GMT)
commit85b375a613085b78531ec86369a51c2f3b922f95 (patch)
tree716437d598de92bbd7acaf24622e9a7d74fc209a /sound/arm/pxa2xx-ac97.c
parentec965350bb98bd291eb34f6ecddfdcfc36da1e6e (diff)
parentcf816ecb533ab96b883dfdc0db174598b5b5c4d2 (diff)
downloadlinux-85b375a613085b78531ec86369a51c2f3b922f95.tar.xz
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (212 commits) [ARM] pxa: Phycore pcm-990-specific code for the PXA270 Quick Capture driver [ARM] pxa: V4L2 soc_camera driver for PXA270 [ARM] pxa: restrict availability of pxa2xx PCMCIA drivers [ARM] 5005/1: BAST: Fix kset_name initialiser [ARM] 4967/1: Adds functions to set clkout rate for Samsung S3C2410 [ARM] 4988/1: Add GPIO lib support to the EP93xx [ARM] Add initial sparsemem support [ARM] pxa: initialise PXA devices before platform init code [ARM] 5002/1: tosa: add two more leds [ARM] 5004/1: Tosa: make several unreferenced structures static. [ARM] 5003/1: Shut up sparse warnings [ARM] 4977/2: soc - pxa2xx-ac97 - Add missing clk_enable() [ARM] 4976/1: zylonite: Configure GPIO for WM9713 IRQ line [ARM] 4974/1: Drop unused leds-tosa. [ARM] 4973/1: Tosa: use leds-gpio driver. [ARM] 4972/1: Tosa: convert scoop GPIOs usage to generic gpio code [ARM] 4971/1: pxaficp_ir: provide startup and shutdown hooks [ARM] pxa: lubbock: move mis-placed SPI info [ARM] 4970/1: tosa: correct gpio used for wake up. [ARM] 4966/1: magician: add MFP pin configuration ...
Diffstat (limited to 'sound/arm/pxa2xx-ac97.c')
-rw-r--r--sound/arm/pxa2xx-ac97.c49
1 files changed, 41 insertions, 8 deletions
diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c
index 5d86e68..8704e28 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;