[PATCH 3/4] ARM: ep93xx: add AC97 platform support
Mika Westerberg
mika.westerberg at iki.fi
Sun Oct 10 06:54:11 EDT 2010
Add platform support for the EP93xx AC97 controller driver.
Signed-off-by: Mika Westerberg <mika.westerberg at iki.fi>
---
arch/arm/mach-ep93xx/core.c | 32 +++++++++++++++++++++++
arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h | 1 +
arch/arm/mach-ep93xx/include/mach/platform.h | 1 +
3 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 4cb55d3..6f514c4 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -826,6 +826,38 @@ void ep93xx_i2s_release(void)
}
EXPORT_SYMBOL(ep93xx_i2s_release);
+/*************************************************************************
+ * EP93xx AC97 audio peripheral handling
+ *************************************************************************/
+static struct resource ep93xx_ac97_resources[] = {
+ {
+ .start = EP93XX_AAC_PHYS_BASE,
+ .end = EP93XX_AAC_PHYS_BASE + 0xb0 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_EP93XX_AACINTR,
+ .end = IRQ_EP93XX_AACINTR,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device ep93xx_ac97_device = {
+ .name = "ep93xx-ac97",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(ep93xx_ac97_resources),
+ .resource = ep93xx_ac97_resources,
+};
+
+void __init ep93xx_register_ac97(void)
+{
+ /*
+ * Make sure that the AC97 pins are not used by I2S.
+ */
+ ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2SONAC97);
+ platform_device_register(&ep93xx_ac97_device);
+}
+
extern void ep93xx_gpio_init(void);
void __init ep93xx_init_devices(void)
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
index c54b3e5..9ac4d10 100644
--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
@@ -105,6 +105,7 @@
#define EP93XX_GPIO_B_INT_STATUS EP93XX_GPIO_REG(0xbc)
#define EP93XX_GPIO_EEDRIVE EP93XX_GPIO_REG(0xc8)
+#define EP93XX_AAC_PHYS_BASE EP93XX_APB_PHYS(0x00080000)
#define EP93XX_AAC_BASE EP93XX_APB_IOMEM(0x00080000)
#define EP93XX_SPI_PHYS_BASE EP93XX_APB_PHYS(0x000a0000)
diff --git a/arch/arm/mach-ep93xx/include/mach/platform.h b/arch/arm/mach-ep93xx/include/mach/platform.h
index 3330b36..5066045 100644
--- a/arch/arm/mach-ep93xx/include/mach/platform.h
+++ b/arch/arm/mach-ep93xx/include/mach/platform.h
@@ -61,6 +61,7 @@ void ep93xx_keypad_release_gpio(struct platform_device *pdev);
void ep93xx_register_i2s(void);
int ep93xx_i2s_acquire(unsigned i2s_pins, unsigned i2s_config);
void ep93xx_i2s_release(void);
+void ep93xx_register_ac97(void);
void ep93xx_init_devices(void);
extern struct sys_timer ep93xx_timer;
--
1.5.6.5
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