[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>
diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c
index 4405536..40c3e95 100644
--- a/arch/arm/mach-at91/board-sam9260ek.c
+++ b/arch/arm/mach-at91/board-sam9260ek.c
@@ -25,6 +25,8 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
+#include <linux/spi/at73c213.h>
+#include <linux/clk.h>
#include <asm/hardware.h>
#include <asm/setup.h>
@@ -37,7 +39,6 @@
#include <asm/arch/board.h>
#include <asm/arch/gpio.h>
-#include <asm/arch/at91sam9_smc.h>
#include "generic.h"
@@ -85,6 +86,35 @@
/*
+ * Audio
+ */
+static struct at73c213_board_info at73c213_data = {
+ .ssc_id = 0,
+ .shortname = "AT91SAM9260-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 *pck0;
+ struct clk *plla;
+
+ pck0 = clk_get(NULL, "pck0");
+ plla = clk_get(NULL, "plla");
+
+ /* AT73C213 MCK Clock */
+ at91_set_B_periph(AT91_PIN_PC1, 0); /* PCK0 */
+
+ clk_set_parent(pck0, plla);
+ clk_put(plla);
+
+ info->dac_clk = pck0;
+}
+#else
+static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
+#endif
+
+/*
* SPI devices.
*/
static struct spi_board_info ek_spi_devices[] = {
@@ -110,6 +140,8 @@
.chip_select = 0,
.max_speed_hz = 10 * 1000 * 1000,
.bus_num = 1,
+ .mode = SPI_MODE_1,
+ .platform_data = &at73c213_data,
},
#endif
};
@@ -190,6 +222,9 @@
at91_add_device_mmc(0, &ek_mmc_data);
/* I2C */
at91_add_device_i2c(NULL, 0);
+ /* SSC (to AT73C213) */
+ at73c213_set_clk(&at73c213_data);
+ at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
}
MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c
index 3c73825..ce512d7 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 @@
#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 @@
.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 @@
.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 @@
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);