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