ARM: 5710/1: at91: add AC97 support to at91sam9rl and at91sam9rlek board

Add the support of AC97 on the at91sam9rl chip and -ek board.
It will share the code with AVR32 ac97c alsa driver "atmel_ac97c".
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-at91/at91sam9rl_devices.c

@@ -443,6 +443,61 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 #endif
 
 
+/* --------------------------------------------------------------------
+ *  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	= AT91SAM9RL_BASE_AC97C,
+		.end	= AT91SAM9RL_BASE_AC97C + SZ_16K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AT91SAM9RL_ID_AC97C,
+		.end	= AT91SAM9RL_ID_AC97C,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device at91sam9rl_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_PD1, 0);	/* AC97FS */
+	at91_set_A_periph(AT91_PIN_PD2, 0);	/* AC97CK */
+	at91_set_A_periph(AT91_PIN_PD3, 0);	/* AC97TX */
+	at91_set_A_periph(AT91_PIN_PD4, 0);	/* AC97RX */
+
+	/* reset */
+	if (data->reset_pin)
+		at91_set_gpio_output(data->reset_pin, 0);
+
+	ac97_data = *data;
+	platform_device_register(&at91sam9rl_ac97_device);
+}
+#else
+void __init at91_add_device_ac97(struct ac97c_platform_data *data) {}
+#endif
+
+
 /* --------------------------------------------------------------------
  *  LCD Controller
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/board-sam9rlek.c

@@ -210,6 +210,14 @@ static struct atmel_lcdfb_info __initdata ek_lcdc_data;
 #endif
 
 
+/*
+ * AC97
+ * reset_pin is not connected: NRST
+ */
+static struct ac97c_platform_data ek_ac97_data = {
+};
+
+
 /*
  * LEDs
  */
@@ -299,6 +307,8 @@ static void __init ek_board_init(void)
 	at91_add_device_mmc(0, &ek_mmc_data);
 	/* LCD Controller */
 	at91_add_device_lcdc(&ek_lcdc_data);
+	/* AC97 */
+	at91_add_device_ac97(&ek_ac97_data);
 	/* Touch Screen Controller */
 	at91_add_device_tsadcc();
 	/* LEDs */