ARM: 6780/1: EDB93xx: Add support for CS4271 SPI-connected CODEC
Add support for CS4271 SPI-connected CODEC to EDB93xx.
Signed-off-by: Alexander Sverdlin <subaparts@yandex.ru>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-ep93xx/edb93xx.c b/arch/arm/mach-ep93xx/edb93xx.c
index fad371d..9969bb1 100644
--- a/arch/arm/mach-ep93xx/edb93xx.c
+++ b/arch/arm/mach-ep93xx/edb93xx.c
@@ -30,9 +30,13 @@
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
+#include <linux/spi/spi.h>
+
+#include <sound/cs4271.h>
#include <mach/hardware.h>
#include <mach/fb.h>
+#include <mach/ep93xx_spi.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -94,6 +98,83 @@
/*************************************************************************
+ * EDB93xx SPI peripheral handling
+ *************************************************************************/
+static struct cs4271_platform_data edb93xx_cs4271_data = {
+ .gpio_nreset = -EINVAL, /* filled in later */
+};
+
+static int edb93xx_cs4271_hw_setup(struct spi_device *spi)
+{
+ return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
+ GPIOF_OUT_INIT_HIGH, spi->modalias);
+}
+
+static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)
+{
+ gpio_free(EP93XX_GPIO_LINE_EGPIO6);
+}
+
+static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)
+{
+ gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
+}
+
+static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {
+ .setup = edb93xx_cs4271_hw_setup,
+ .cleanup = edb93xx_cs4271_hw_cleanup,
+ .cs_control = edb93xx_cs4271_hw_cs_control,
+};
+
+static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
+ {
+ .modalias = "cs4271",
+ .platform_data = &edb93xx_cs4271_data,
+ .controller_data = &edb93xx_cs4271_hw,
+ .max_speed_hz = 6000000,
+ .bus_num = 0,
+ .chip_select = 0,
+ .mode = SPI_MODE_3,
+ },
+};
+
+static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
+ .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info),
+};
+
+static void __init edb93xx_register_spi(void)
+{
+ if (machine_is_edb9301() || machine_is_edb9302())
+ edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
+ else if (machine_is_edb9302a() || machine_is_edb9307a())
+ edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
+ else if (machine_is_edb9315a())
+ edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
+
+ ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
+ ARRAY_SIZE(edb93xx_spi_board_info));
+}
+
+
+/*************************************************************************
+ * EDB93xx I2S
+ *************************************************************************/
+static int __init edb93xx_has_audio(void)
+{
+ return (machine_is_edb9301() || machine_is_edb9302() ||
+ machine_is_edb9302a() || machine_is_edb9307a() ||
+ machine_is_edb9315a());
+}
+
+static void __init edb93xx_register_i2s(void)
+{
+ if (edb93xx_has_audio()) {
+ ep93xx_register_i2s();
+ }
+}
+
+
+/*************************************************************************
* EDB93xx pwm
*************************************************************************/
static void __init edb93xx_register_pwm(void)
@@ -149,6 +230,8 @@
edb93xx_register_flash();
ep93xx_register_eth(&edb93xx_eth_data, 1);
edb93xx_register_i2c();
+ edb93xx_register_spi();
+ edb93xx_register_i2s();
edb93xx_register_pwm();
edb93xx_register_fb();
}