ARM: ep93xx: add AC97 platform support

Add platform support for the EP93xx AC97 controller driver.

Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 36 insertions, 0 deletions

diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 1990e2299841..ffdf87be2958 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -832,6 +832,40 @@ 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);
+        platform_device_register(&ep93xx_pcm_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 c54b3e56ba63..9ac4d1055097 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 3330b36d79e6..50660455b1d8 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;