[ARM] 4833/3: Convert non-SoC PXA2xx AC97 driver to 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>

diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c
index 5d86e6809752e701218531deb29088f2f5517855..fd7bc865e672021b28ad431cb5c9ed8588901bec 100644 (file)
--- 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>
@@ -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:
@@ -112,9 +117,9 @@ 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 +264,7 @@ 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 +273,7 @@ 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 +340,21 @@ 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 +379,19 @@ 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 +404,13 @@ 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;