Commit c8a6885f authored by Sascha Hauer's avatar Sascha Hauer
Browse files

pca100: add sound support

parent d9e557e5
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+48 −0
Original line number Diff line number Diff line
@@ -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);