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authorEric Miao <eric.y.miao@gmail.com>2010-01-04 16:30:58 +0800
committerEric Miao <eric.y.miao@gmail.com>2010-03-02 07:40:47 +0800
commitfb1bf8cd13bfa7ed0364ab0d82f717fc020d35f6 (patch)
tree556e2d6f8ac2ace0bdfb0a261673078a581ca023 /sound/arm
parente1aed7ca555af7412ca1336241b918d78485232f (diff)
downloadlinux-linaro-precise-fb1bf8cd13bfa7ed0364ab0d82f717fc020d35f6.tar.gz
[ARM] pxa: introduce processor specific pxa27x_assert_ac97reset()
This is really pxa27x specific and should be kept in pxa27x.c. With this newly introduced function, the original set_resetgpio_mode() is deprecated. Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'sound/arm')
-rw-r--r--sound/arm/pxa2xx-ac97-lib.c50
1 files changed, 6 insertions, 44 deletions
diff --git a/sound/arm/pxa2xx-ac97-lib.c b/sound/arm/pxa2xx-ac97-lib.c
index 7587a748ea0..ee687283b6a 100644
--- a/sound/arm/pxa2xx-ac97-lib.c
+++ b/sound/arm/pxa2xx-ac97-lib.c
@@ -32,6 +32,8 @@ static struct clk *ac97_clk;
static struct clk *ac97conf_clk;
static int reset_gpio;
+extern void pxa27x_assert_ac97reset(int reset_gpio, int on);
+
/*
* Beware PXA27x bugs:
*
@@ -42,45 +44,6 @@ static int reset_gpio;
* 1 jiffy timeout if interrupt never comes).
*/
-enum {
- RESETGPIO_FORCE_HIGH,
- RESETGPIO_FORCE_LOW,
- RESETGPIO_NORMAL_ALTFUNC
-};
-
-/**
- * set_resetgpio_mode - computes and sets the AC97_RESET gpio mode on PXA
- * @mode: chosen action
- *
- * As the PXA27x CPUs suffer from a AC97 bug, a manual control of the reset line
- * must be done to insure proper work of AC97 reset line. This function
- * computes the correct gpio_mode for further use by reset functions, and
- * applied the change through pxa_gpio_mode.
- */
-static void set_resetgpio_mode(int resetgpio_action)
-{
- int mode = 0;
-
- if (reset_gpio)
- switch (resetgpio_action) {
- case RESETGPIO_NORMAL_ALTFUNC:
- if (reset_gpio == 113)
- mode = 113 | GPIO_ALT_FN_2_OUT;
- if (reset_gpio == 95)
- mode = 95 | GPIO_ALT_FN_1_OUT;
- break;
- case RESETGPIO_FORCE_LOW:
- mode = reset_gpio | GPIO_OUT | GPIO_DFLT_LOW;
- break;
- case RESETGPIO_FORCE_HIGH:
- mode = reset_gpio | GPIO_OUT | GPIO_DFLT_HIGH;
- break;
- };
-
- if (mode)
- pxa_gpio_mode(mode);
-}
-
unsigned short pxa2xx_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
{
unsigned short val = -1;
@@ -174,12 +137,11 @@ static inline void pxa_ac97_warm_pxa27x(void)
{
gsr_bits = 0;
- /* warm reset broken on Bulverde,
- so manually keep AC97 reset high */
- set_resetgpio_mode(RESETGPIO_FORCE_HIGH);
+ /* warm reset broken on Bulverde, so manually keep AC97 reset high */
+ pxa27x_assert_ac97reset(reset_gpio, 1);
udelay(10);
GCR |= GCR_WARM_RST;
- set_resetgpio_mode(RESETGPIO_NORMAL_ALTFUNC);
+ pxa27x_assert_ac97reset(reset_gpio, 0);
udelay(500);
}
@@ -385,7 +347,7 @@ int __devinit pxa2xx_ac97_hw_probe(struct platform_device *dev)
if (cpu_is_pxa27x()) {
/* Use GPIO 113 as AC97 Reset on Bulverde */
- set_resetgpio_mode(RESETGPIO_NORMAL_ALTFUNC);
+ pxa27x_assert_ac97reset(reset_gpio, 0);
ac97conf_clk = clk_get(&dev->dev, "AC97CONFCLK");
if (IS_ERR(ac97conf_clk)) {
ret = PTR_ERR(ac97conf_clk);