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

pca100: add sound support 



Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent d9e557e5

arch/arm/mach-mx2/mach-pca100.c

+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);