ARM: ep93xx: vision_ep9307: add audio support

Add I2S audio support to the vision_ep9307 system.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c
index aa87dfa5e805a6429d4600af0c97665cc91d5384..ff22a6a6e2bf675589a754a71aa702c1bbdeed78 100644 (file)
--- a/arch/arm/mach-ep93xx/vision_ep9307.c
+++ b/arch/arm/mach-ep93xx/vision_ep9307.c
@@ -29,6 +29,8 @@
 #include <linux/spi/mmc_spi.h>
 #include <linux/mmc/host.h>
 
+#include <sound/cs4271.h>
+
 #include <mach/hardware.h>
 #include <linux/platform_data/video-ep93xx.h>
 #include <linux/platform_data/spi-ep93xx.h>
@@ -168,6 +170,35 @@ static struct i2c_board_info vision_i2c_info[] __initdata = {
        },
 };
 
+/*************************************************************************
+ * SPI CS4271 Audio Codec
+ *************************************************************************/
+static struct cs4271_platform_data vision_cs4271_data = {
+       .gpio_nreset    = EP93XX_GPIO_LINE_H(2),
+};
+
+static int vision_cs4271_hw_setup(struct spi_device *spi)
+{
+       return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
+                               GPIOF_OUT_INIT_HIGH, spi->modalias);
+}
+
+static void vision_cs4271_hw_cleanup(struct spi_device *spi)
+{
+       gpio_free(EP93XX_GPIO_LINE_EGPIO6);
+}
+
+static void vision_cs4271_hw_cs_control(struct spi_device *spi, int value)
+{
+       gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
+}
+
+static struct ep93xx_spi_chip_ops vision_cs4271_hw = {
+       .setup          = vision_cs4271_hw_setup,
+       .cleanup        = vision_cs4271_hw_cleanup,
+       .cs_control     = vision_cs4271_hw_cs_control,
+};
+
 /*************************************************************************
  * SPI Flash
  *************************************************************************/
@@ -262,12 +293,20 @@ static struct ep93xx_spi_chip_ops vision_spi_mmc_hw = {
  *************************************************************************/
 static struct spi_board_info vision_spi_board_info[] __initdata = {
        {
+               .modalias               = "cs4271",
+               .platform_data          = &vision_cs4271_data,
+               .controller_data        = &vision_cs4271_hw,
+               .max_speed_hz           = 6000000,
+               .bus_num                = 0,
+               .chip_select            = 0,
+               .mode                   = SPI_MODE_3,
+       }, {
                .modalias               = "sst25l",
                .platform_data          = &vision_spi_flash_data,
                .controller_data        = &vision_spi_flash_hw,
                .max_speed_hz           = 20000000,
                .bus_num                = 0,
-               .chip_select            = 0,
+               .chip_select            = 1,
                .mode                   = SPI_MODE_3,
        }, {
                .modalias               = "mmc_spi",
@@ -275,7 +314,7 @@ static struct spi_board_info vision_spi_board_info[] __initdata = {
                .controller_data        = &vision_spi_mmc_hw,
                .max_speed_hz           = 20000000,
                .bus_num                = 0,
-               .chip_select            = 1,
+               .chip_select            = 2,
                .mode                   = SPI_MODE_3,
        },
 };
@@ -285,6 +324,20 @@ static struct ep93xx_spi_info vision_spi_master __initdata = {
        .use_dma        = 1,
 };
 
+/*************************************************************************
+ * I2S Audio
+ *************************************************************************/
+static struct platform_device vision_audio_device = {
+       .name           = "edb93xx-audio",
+       .id             = -1,
+};
+
+static void __init vision_register_i2s(void)
+{
+       ep93xx_register_i2s();
+       platform_device_register(&vision_audio_device);
+}
+
 /*************************************************************************
  * Machine Initialization
  *************************************************************************/
@@ -310,6 +363,7 @@ static void __init vision_init_machine(void)
                                ARRAY_SIZE(vision_i2c_info));
        ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
                                ARRAY_SIZE(vision_spi_board_info));
+       vision_register_i2s();
 }
 
 MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")