#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>
#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"
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:
mutex_lock(&car_mutex);
/* set up primary or secondary codec/modem space */
-#ifdef CONFIG_PXA27x
+#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
#else
if (reg == AC97_GPIO_STATUS)
wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_SDONE, 1);
if (!((GSR | gsr_bits) & GSR_SDONE)) {
printk(KERN_ERR "%s: read error (ac97_reg=%x GSR=%#lx)\n",
- __FUNCTION__, reg, GSR | gsr_bits);
+ __func__, reg, GSR | gsr_bits);
val = -1;
goto out;
}
mutex_lock(&car_mutex);
/* set up primary or secondary codec/modem space */
-#ifdef CONFIG_PXA27x
+#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
#else
if (reg == AC97_GPIO_STATUS)
wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_CDONE, 1);
if (!((GSR | gsr_bits) & GSR_CDONE))
printk(KERN_ERR "%s: write error (ac97_reg=%x GSR=%#lx)\n",
- __FUNCTION__, reg, GSR | gsr_bits);
+ __func__, reg, GSR | gsr_bits);
mutex_unlock(&car_mutex);
}
static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
{
+#ifdef CONFIG_PXA3xx
+ int timeout = 100;
+#endif
gsr_bits = 0;
#ifdef CONFIG_PXA27x
GCR |= GCR_WARM_RST;
pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
udelay(500);
+#elif defined(CONFIG_PXA3xx)
+ /* Can't use interrupts */
+ GCR |= GCR_WARM_RST;
+ while (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR)) && timeout--)
+ mdelay(1);
#else
GCR |= GCR_WARM_RST | GCR_PRIRDY_IEN | GCR_SECRDY_IEN;
wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1);
if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR)))
printk(KERN_INFO "%s: warm reset timeout (GSR=%#lx)\n",
- __FUNCTION__, gsr_bits);
+ __func__, gsr_bits);
GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
GCR |= GCR_SDONE_IE|GCR_CDONE_IE;
static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
{
+#ifdef CONFIG_PXA3xx
+ int timeout = 1000;
+
+ /* Hold CLKBPB for 100us */
+ GCR = 0;
+ GCR = GCR_CLKBPB;
+ udelay(100);
+ GCR = 0;
+#endif
+
GCR &= GCR_COLD_RST; /* clear everything but nCRST */
GCR &= ~GCR_COLD_RST; /* then assert nCRST */
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);
+#elif defined(CONFIG_PXA3xx)
+ /* Can't use interrupts on PXA3xx */
+ GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
+
+ GCR = GCR_WARM_RST | GCR_COLD_RST;
+ while (!(GSR & (GSR_PCR | GSR_SCR)) && timeout--)
+ mdelay(10);
#else
GCR = GCR_COLD_RST;
GCR |= GCR_CDONE_IE|GCR_SDONE_IE;
if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR)))
printk(KERN_INFO "%s: cold reset timeout (GSR=%#lx)\n",
- __FUNCTION__, gsr_bits);
+ __func__, gsr_bits);
GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
GCR |= GCR_SDONE_IE|GCR_CDONE_IE;
struct snd_soc_cpu_dai *dai)
{
GCR |= GCR_ACLINK_OFF;
- pxa_set_cken(CKEN_AC97, 0);
+ clk_disable(ac97_clk);
return 0;
}
/* Use GPIO 113 as AC97 Reset on Bulverde */
pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
#endif
- pxa_set_cken(CKEN_AC97, 1);
+ clk_enable(ac97_clk);
return 0;
}
#ifdef CONFIG_PXA27x
/* Use GPIO 113 as AC97 Reset on Bulverde */
pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
+
+ ac97conf_clk = clk_get(&pdev->dev, "AC97CONFCLK");
+ if (IS_ERR(ac97conf_clk)) {
+ ret = PTR_ERR(ac97conf_clk);
+ ac97conf_clk = NULL;
+ goto err_irq;
+ }
#endif
- pxa_set_cken(CKEN_AC97, 1);
+ ac97_clk = clk_get(&pdev->dev, "AC97CLK");
+ if (IS_ERR(ac97_clk)) {
+ ret = PTR_ERR(ac97_clk);
+ ac97_clk = NULL;
+ goto err_irq;
+ }
+ clk_enable(ac97_clk);
return 0;
- err:
- if (CKEN & (1 << CKEN_AC97)) {
- GCR |= GCR_ACLINK_OFF;
- free_irq(IRQ_AC97, NULL);
- pxa_set_cken(CKEN_AC97, 0);
+ err_irq:
+ GCR |= GCR_ACLINK_OFF;
+#ifdef CONFIG_PXA27x
+ if (ac97conf_clk) {
+ clk_put(ac97conf_clk);
+ ac97conf_clk = NULL;
}
+#endif
+ free_irq(IRQ_AC97, NULL);
+ err:
return ret;
}
{
GCR |= GCR_ACLINK_OFF;
free_irq(IRQ_AC97, NULL);
- pxa_set_cken(CKEN_AC97, 0);
+#ifdef CONFIG_PXA27x
+ clk_put(ac97conf_clk);
+ ac97conf_clk = NULL;
+#endif
+ clk_disable(ac97_clk);
+ clk_put(ac97_clk);
+ ac97_clk = NULL;
}
static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,