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authorMark Brown2010-03-22 12:17:26 +0100
committerMark Brown2010-03-22 12:17:26 +0100
commitf9b44121b34174ae4f243a568393fc3225842e75 (patch)
tree943f68cd7458d08a9e8809ed0a10b71b23911f3e /sound/arm
parentASoC: pxa-pcm-lib: initialize DMA channel to -1 (diff)
parentLinux 2.6.34-rc2 (diff)
downloadkernel-qcow2-linux-f9b44121b34174ae4f243a568393fc3225842e75.tar.gz
kernel-qcow2-linux-f9b44121b34174ae4f243a568393fc3225842e75.tar.xz
kernel-qcow2-linux-f9b44121b34174ae4f243a568393fc3225842e75.zip
Merge commit 'v2.6.34-rc2' into for-2.6.34
Diffstat (limited to 'sound/arm')
-rw-r--r--sound/arm/pxa2xx-ac97-lib.c68
1 files changed, 6 insertions, 62 deletions
diff --git a/sound/arm/pxa2xx-ac97-lib.c b/sound/arm/pxa2xx-ac97-lib.c
index 6fdca97186e7..88eec3847df2 100644
--- a/sound/arm/pxa2xx-ac97-lib.c
+++ b/sound/arm/pxa2xx-ac97-lib.c
@@ -22,7 +22,6 @@
#include <asm/irq.h>
#include <mach/regs-ac97.h>
-#include <mach/pxa2xx-gpio.h>
#include <mach/audio.h>
static DEFINE_MUTEX(car_mutex);
@@ -32,6 +31,8 @@ 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 +43,6 @@ 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 +136,11 @@ 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);
}
@@ -345,16 +306,6 @@ EXPORT_SYMBOL_GPL(pxa2xx_ac97_hw_suspend);
int pxa2xx_ac97_hw_resume(void)
{
- if (cpu_is_pxa25x() || cpu_is_pxa27x()) {
- pxa_gpio_mode(GPIO31_SYNC_AC97_MD);
- pxa_gpio_mode(GPIO30_SDATA_OUT_AC97_MD);
- pxa_gpio_mode(GPIO28_BITCLK_AC97_MD);
- pxa_gpio_mode(GPIO29_SDATA_IN_AC97_MD);
- }
- if (cpu_is_pxa27x()) {
- /* Use GPIO 113 or 95 as AC97 Reset on Bulverde */
- set_resetgpio_mode(RESETGPIO_NORMAL_ALTFUNC);
- }
clk_enable(ac97_clk);
return 0;
}
@@ -386,16 +337,9 @@ int __devinit pxa2xx_ac97_hw_probe(struct platform_device *dev)
reset_gpio = 113;
}
- if (cpu_is_pxa25x() || cpu_is_pxa27x()) {
- pxa_gpio_mode(GPIO31_SYNC_AC97_MD);
- pxa_gpio_mode(GPIO30_SDATA_OUT_AC97_MD);
- pxa_gpio_mode(GPIO28_BITCLK_AC97_MD);
- pxa_gpio_mode(GPIO29_SDATA_IN_AC97_MD);
- }
-
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);
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/*
 * linux/drivers/pcmcia/pxa/pxa_cm_x270.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Compulab Ltd., 2003, 2007, 2008
 * Mike Rapoport <mike@compulab.co.il>
 *
 */

#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/export.h>

#include "soc_common.h"

#define GPIO_PCMCIA_S0_CD_VALID	(84)
#define GPIO_PCMCIA_S0_RDYINT	(82)
#define GPIO_PCMCIA_RESET	(53)

static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	if (ret)
		return ret;
	gpio_direction_output(GPIO_PCMCIA_RESET, 0);

	skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
	skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
	skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
	skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";

	return ret;
}

static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free(GPIO_PCMCIA_RESET);
}


static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
				       struct pcmcia_state *state)
{
	state->vs_3v  = 0;
	state->vs_Xv  = 0;
}


static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
					  const socket_state_t *state)
{
	switch (skt->nr) {
	case 0:
		if (state->flags & SS_RESET) {
			gpio_set_value(GPIO_PCMCIA_RESET, 1);
			udelay(10);
			gpio_set_value(GPIO_PCMCIA_RESET, 0);
		}
		break;
	}

	return 0;
}

static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
	.owner			= THIS_MODULE,
	.hw_init		= cmx270_pcmcia_hw_init,
	.hw_shutdown		= cmx270_pcmcia_shutdown,
	.socket_state		= cmx270_pcmcia_socket_state,
	.configure_socket	= cmx270_pcmcia_configure_socket,
	.nr			= 1,
};

static struct platform_device *cmx270_pcmcia_device;

int __init cmx270_pcmcia_init(void)
{
	int ret;

	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);

	if (!cmx270_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
				       sizeof(cmx270_pcmcia_ops));

	if (ret == 0) {
		printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
		ret = platform_device_add(cmx270_pcmcia_device);
	}

	if (ret)
		platform_device_put(cmx270_pcmcia_device);

	return ret;
}

void __exit cmx270_pcmcia_exit(void)
{
	platform_device_unregister(cmx270_pcmcia_device);
}