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Code Issues Releases Wiki Activity

pca100: add sound support

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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2010-02-08 16:42:28 +01:00
parent d9e557e5cb
commit c8a6885f21
1 changed files with 48 additions and 0 deletions
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48
arch/arm/mach-mx2/mach-pca100.c
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@ -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);