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authorH Hartley Sweeten <hsweeten@visionengravers.com>2015-06-16 09:52:47 -0700
committerLinus Walleij <linus.walleij@linaro.org>2015-07-17 11:50:23 +0200
commitb07b4e2972372c1ca86dda78802aecc01cbc187a (patch)
tree90f845bda1c343fb259cbfb3f40146ed5c7e953e /arch/arm/mach-ep93xx/vision_ep9307.c
parent25105231f071960c0f7109f0e01ba55c7b823701 (diff)
downloadlinux-b07b4e2972372c1ca86dda78802aecc01cbc187a.tar.bz2
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>
Diffstat (limited to 'arch/arm/mach-ep93xx/vision_ep9307.c')
-rw-r--r--arch/arm/mach-ep93xx/vision_ep9307.c58
1 files changed, 56 insertions, 2 deletions
diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c
index aa87dfa5e805..ff22a6a6e2bf 100644
--- 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>
@@ -169,6 +171,35 @@ 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
*************************************************************************/
#define VISION_SPI_FLASH_CS EP93XX_GPIO_LINE_EGPIO7
@@ -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,
},
};
@@ -286,6 +325,20 @@ static struct ep93xx_spi_info vision_spi_master __initdata = {
};
/*************************************************************************
+ * 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
*************************************************************************/
static void __init vision_init_machine(void)
@@ -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")