On 10/10/2010 11:54 PM, Mika Westerberg wrote:
Add platform support for the EP93xx AC97 controller driver.
Signed-off-by: Mika Westerberg mika.westerberg@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);
+}
The other ep93xx device support functions do this with acquire/release functions. However, it is quite unlikely that a board will ever need to switch from i2s to ac97 audio at runtime. Will see what Hartley thinks.
~Ryan