diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mx2/mach-pca100.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-mx2/mach-pca100.c b/arch/arm/mach-mx2/mach-pca100.c index cda52a6..d12bdb1 100644 --- a/arch/arm/mach-mx2/mach-pca100.c +++ b/arch/arm/mach-mx2/mach-pca100.c @@ -25,6 +25,7 @@ #include <linux/spi/spi.h> #include <linux/spi/eeprom.h> #include <linux/irq.h> +#include <linux/delay.h> #include <linux/gpio.h> #include <linux/usb/otg.h> #include <linux/usb/ulpi.h> @@ -41,6 +42,8 @@ #include <mach/spi.h> #endif #include <mach/imx-uart.h> +#include <mach/audmux.h> +#include <mach/ssi.h> #include <mach/mxc_nand.h> #include <mach/irqs.h> #include <mach/mmc.h> @@ -193,6 +196,37 @@ static struct spi_imx_master pca100_spi_0_data = { }; #endif +static void pca100_ac97_warm_reset(struct snd_ac97 *ac97) +{ + mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT); + gpio_set_value(GPIO_PORTC + 20, 1); + udelay(2); + gpio_set_value(GPIO_PORTC + 20, 0); + mxc_gpio_mode(PC20_PF_SSI1_FS); + msleep(2); +} + +static void pca100_ac97_cold_reset(struct snd_ac97 *ac97) +{ + mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT); /* FS */ + gpio_set_value(GPIO_PORTC + 20, 0); + mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT); /* TX */ + gpio_set_value(GPIO_PORTC + 22, 0); + mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT); /* reset */ + gpio_set_value(GPIO_PORTC + 28, 0); + udelay(10); + gpio_set_value(GPIO_PORTC + 28, 1); + mxc_gpio_mode(PC20_PF_SSI1_FS); + mxc_gpio_mode(PC22_PF_SSI1_TXD); + msleep(2); +} + +static struct imx_ssi_platform_data pca100_ssi_pdata = { + .ac97_reset = pca100_ac97_cold_reset, + .ac97_warm_reset = pca100_ac97_warm_reset, + .flags = IMX_SSI_USE_AC97, +}; + static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data) { @@ -266,11 +300,25 @@ static void __init pca100_init(void) { int ret; + /* SSI unit */ + mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, + MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */ + MXC_AUDMUX_V1_PCR_TFCSEL(3) | + MXC_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */ + MXC_AUDMUX_V1_PCR_RXDSEL(3)); + mxc_audmux_v1_configure_port(3, + MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */ + MXC_AUDMUX_V1_PCR_TFCSEL(0) | + MXC_AUDMUX_V1_PCR_TFSDIR | + MXC_AUDMUX_V1_PCR_RXDSEL(0)); + ret = mxc_gpio_setup_multiple_pins(pca100_pins, ARRAY_SIZE(pca100_pins), "PCA100"); if (ret) printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret); + mxc_register_device(&imx_ssi_device0, &pca100_ssi_pdata); + mxc_register_device(&mxc_uart_device0, &uart_pdata); mxc_gpio_mode(GPIO_PORTC | 29 | GPIO_GPIO | GPIO_IN); |