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authorAndrew Victor <linux@maxim.org.za>2008-04-02 22:18:35 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-04-04 09:52:27 +0100
commit5e9df924dd51beaf007ffba42b5deb47e1c6249b (patch)
treebf4a34790a09100321f5f6857bf7a0d5fc251285 /arch/arm/mach-at91/board-sam9261ek.c
parente5f40bfaf309ec4cc27b717d48fb0824313e5ef8 (diff)
[ARM] 4910/1: [AT91] AT73C213 audio on SAM9260-EK and SAM9261-EK boards
Add support for AT73C213 audio DAC on the Atmel SAM9260-EK and SAM9261-EK boards. Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com> Signed-off-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-at91/board-sam9261ek.c')
-rw-r--r--arch/arm/mach-at91/board-sam9261ek.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c
index 3c73825b58de..ce512d74e6e9 100644
--- a/arch/arm/mach-at91/board-sam9261ek.c
+++ b/arch/arm/mach-at91/board-sam9261ek.c
@@ -26,6 +26,8 @@
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
+#include <linux/spi/at73c213.h>
+#include <linux/clk.h>
#include <linux/dm9000.h>
#include <linux/fb.h>
#include <linux/gpio_keys.h>
@@ -231,6 +233,35 @@ static void __init ek_add_device_ts(void) {}
#endif
/*
+ * Audio
+ */
+static struct at73c213_board_info at73c213_data = {
+ .ssc_id = 1,
+ .shortname = "AT91SAM9261-EK external DAC",
+};
+
+#if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
+static void __init at73c213_set_clk(struct at73c213_board_info *info)
+{
+ struct clk *pck2;
+ struct clk *plla;
+
+ pck2 = clk_get(NULL, "pck2");
+ plla = clk_get(NULL, "plla");
+
+ /* AT73C213 MCK Clock */
+ at91_set_B_periph(AT91_PIN_PB31, 0); /* PCK2 */
+
+ clk_set_parent(pck2, plla);
+ clk_put(plla);
+
+ info->dac_clk = pck2;
+}
+#else
+static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
+#endif
+
+/*
* SPI devices
*/
static struct spi_board_info ek_spi_devices[] = {
@@ -248,6 +279,7 @@ static struct spi_board_info ek_spi_devices[] = {
.bus_num = 0,
.platform_data = &ads_info,
.irq = AT91SAM9261_ID_IRQ0,
+ .controller_data = (void *) AT91_PIN_PA28, /* CS pin */
},
#endif
#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
@@ -263,6 +295,9 @@ static struct spi_board_info ek_spi_devices[] = {
.chip_select = 3,
.max_speed_hz = 10 * 1000 * 1000,
.bus_num = 0,
+ .mode = SPI_MODE_1,
+ .platform_data = &at73c213_data,
+ .controller_data = (void*) AT91_PIN_PA29, /* default for CS3 is PA6, but it must be PA29 */
},
#endif
};
@@ -473,6 +508,9 @@ static void __init ek_board_init(void)
at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
/* Touchscreen */
ek_add_device_ts();
+ /* SSC (to AT73C213) */
+ at73c213_set_clk(&at73c213_data);
+ at91_add_device_ssc(AT91SAM9261_ID_SSC1, ATMEL_SSC_TX);
#else
/* MMC */
at91_add_device_mmc(0, &ek_mmc_data);

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