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Subject[PATCH] at91: add AC97 support to at91sam9g45 series and at91sam9m10g45ek board
Date
Add the support of AC97 on the at91sam9g45 chip series and -ek board.
It will share the code with AVR32 ac97c alsa driver "atmel_ac97c".

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
---
arch/arm/mach-at91/at91sam9g45_devices.c | 55 ++++++++++++++++++++++++++++++
arch/arm/mach-at91/board-sam9m10g45ek.c | 10 +++++
2 files changed, 65 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 45720c8..d581cff 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -598,6 +598,61 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)


/* --------------------------------------------------------------------
+ * AC97
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_SND_ATMEL_AC97C) || defined(CONFIG_SND_ATMEL_AC97C_MODULE)
+static u64 ac97_dmamask = DMA_BIT_MASK(32);
+static struct ac97c_platform_data ac97_data;
+
+static struct resource ac97_resources[] = {
+ [0] = {
+ .start = AT91SAM9G45_BASE_AC97C,
+ .end = AT91SAM9G45_BASE_AC97C + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91SAM9G45_ID_AC97C,
+ .end = AT91SAM9G45_ID_AC97C,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device at91sam9g45_ac97_device = {
+ .name = "atmel_ac97c",
+ .id = 0,
+ .dev = {
+ .dma_mask = &ac97_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &ac97_data,
+ },
+ .resource = ac97_resources,
+ .num_resources = ARRAY_SIZE(ac97_resources),
+};
+
+void __init at91_add_device_ac97(struct ac97c_platform_data *data)
+{
+ if (!data)
+ return;
+
+ at91_set_A_periph(AT91_PIN_PD8, 0); /* AC97FS */
+ at91_set_A_periph(AT91_PIN_PD9, 0); /* AC97CK */
+ at91_set_A_periph(AT91_PIN_PD7, 0); /* AC97TX */
+ at91_set_A_periph(AT91_PIN_PD6, 0); /* AC97RX */
+
+ /* reset */
+ if (data->reset_pin)
+ at91_set_gpio_output(data->reset_pin, 0);
+
+ ac97_data = *data;
+ platform_device_register(&at91sam9g45_ac97_device);
+}
+#else
+void __init at91_add_device_ac97(struct ac97c_platform_data *data) {}
+#endif
+
+
+/* --------------------------------------------------------------------
* LCD Controller
* -------------------------------------------------------------------- */

diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c
index b8558ea..64c3843 100644
--- a/arch/arm/mach-at91/board-sam9m10g45ek.c
+++ b/arch/arm/mach-at91/board-sam9m10g45ek.c
@@ -311,6 +311,14 @@ static void __init ek_add_device_buttons(void) {}


/*
+ * AC97
+ * reset_pin is not connected: NRST
+ */
+static struct ac97c_platform_data ek_ac97_data = {
+};
+
+
+/*
* LEDs ... these could all be PWM-driven, for variable brightness
*/
static struct gpio_led ek_leds[] = {
@@ -372,6 +380,8 @@ static void __init ek_board_init(void)
at91_add_device_lcdc(&ek_lcdc_data);
/* Push Buttons */
ek_add_device_buttons();
+ /* AC97 */
+ at91_add_device_ac97(&ek_ac97_data);
/* LEDs */
at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led));
--
1.5.6.5


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