summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/mach-mx2/mach-pca100.c48
-rw-r--r--arch/arm/mach-mx3/mach-pcm043.c101
-rw-r--r--arch/arm/plat-mxc/include/mach/ssi.h18
3 files changed, 167 insertions, 0 deletions
diff --git a/arch/arm/mach-mx2/mach-pca100.c b/arch/arm/mach-mx2/mach-pca100.c
index cda52a6a3290..d12bdb1fcabb 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);
diff --git a/arch/arm/mach-mx3/mach-pcm043.c b/arch/arm/mach-mx3/mach-pcm043.c
index a9741c2b379f..1bf1ec2eef5e 100644
--- a/arch/arm/mach-mx3/mach-pcm043.c
+++ b/arch/arm/mach-mx3/mach-pcm043.c
@@ -26,6 +26,7 @@
#include <linux/gpio.h>
#include <linux/smc911x.h>
#include <linux/interrupt.h>
+#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/usb/otg.h>
@@ -49,6 +50,8 @@
#include <mach/mxc_nand.h>
#include <mach/mxc_ehci.h>
#include <mach/ulpi.h>
+#include <mach/audmux.h>
+#include <mach/ssi.h>
#include "devices.h"
@@ -213,6 +216,91 @@ static struct pad_desc pcm043_pads[] = {
/* USB host */
MX35_PAD_I2C2_CLK__USB_TOP_USBH2_PWR,
MX35_PAD_I2C2_DAT__USB_TOP_USBH2_OC,
+ /* SSI */
+ MX35_PAD_STXFS4__AUDMUX_AUD4_TXFS,
+ MX35_PAD_STXD4__AUDMUX_AUD4_TXD,
+ MX35_PAD_SRXD4__AUDMUX_AUD4_RXD,
+ MX35_PAD_SCK4__AUDMUX_AUD4_TXC,
+};
+
+#define AC97_GPIO_TXFS (1 * 32 + 31)
+#define AC97_GPIO_TXD (1 * 32 + 28)
+#define AC97_GPIO_RESET (1 * 32 + 0)
+
+static void pcm043_ac97_warm_reset(struct snd_ac97 *ac97)
+{
+ struct pad_desc txfs_gpio = MX35_PAD_STXFS4__GPIO2_31;
+ struct pad_desc txfs = MX35_PAD_STXFS4__AUDMUX_AUD4_TXFS;
+ int ret;
+
+ ret = gpio_request(AC97_GPIO_TXFS, "SSI");
+ if (ret) {
+ printk("failed to get GPIO_TXFS: %d\n", ret);
+ return;
+ }
+
+ mxc_iomux_v3_setup_pad(&txfs_gpio);
+
+ /* warm reset */
+ gpio_direction_output(AC97_GPIO_TXFS, 1);
+ udelay(2);
+ gpio_set_value(AC97_GPIO_TXFS, 0);
+
+ gpio_free(AC97_GPIO_TXFS);
+ mxc_iomux_v3_setup_pad(&txfs);
+}
+
+static void pcm043_ac97_cold_reset(struct snd_ac97 *ac97)
+{
+ struct pad_desc txfs_gpio = MX35_PAD_STXFS4__GPIO2_31;
+ struct pad_desc txfs = MX35_PAD_STXFS4__AUDMUX_AUD4_TXFS;
+ struct pad_desc txd_gpio = MX35_PAD_STXD4__GPIO2_28;
+ struct pad_desc txd = MX35_PAD_STXD4__AUDMUX_AUD4_TXD;
+ struct pad_desc reset_gpio = MX35_PAD_SD2_CMD__GPIO2_0;
+ int ret;
+
+ ret = gpio_request(AC97_GPIO_TXFS, "SSI");
+ if (ret)
+ goto err1;
+
+ ret = gpio_request(AC97_GPIO_TXD, "SSI");
+ if (ret)
+ goto err2;
+
+ ret = gpio_request(AC97_GPIO_RESET, "SSI");
+ if (ret)
+ goto err3;
+
+ mxc_iomux_v3_setup_pad(&txfs_gpio);
+ mxc_iomux_v3_setup_pad(&txd_gpio);
+ mxc_iomux_v3_setup_pad(&reset_gpio);
+
+ gpio_direction_output(AC97_GPIO_TXFS, 0);
+ gpio_direction_output(AC97_GPIO_TXD, 0);
+
+ /* cold reset */
+ gpio_direction_output(AC97_GPIO_RESET, 0);
+ udelay(10);
+ gpio_direction_output(AC97_GPIO_RESET, 1);
+
+ mxc_iomux_v3_setup_pad(&txd);
+ mxc_iomux_v3_setup_pad(&txfs);
+
+ gpio_free(AC97_GPIO_RESET);
+err3:
+ gpio_free(AC97_GPIO_TXD);
+err2:
+ gpio_free(AC97_GPIO_TXFS);
+err1:
+ if (ret)
+ printk("%s failed with %d\n", __func__, ret);
+ mdelay(1);
+}
+
+static struct imx_ssi_platform_data pcm043_ssi_pdata = {
+ .ac97_reset = pcm043_ac97_cold_reset,
+ .ac97_warm_reset = pcm043_ac97_warm_reset,
+ .flags = IMX_SSI_USE_AC97,
};
static struct mxc_nand_platform_data pcm037_nand_board_info = {
@@ -258,10 +346,23 @@ static void __init mxc_board_init(void)
{
mxc_iomux_v3_setup_multiple_pads(pcm043_pads, ARRAY_SIZE(pcm043_pads));
+ mxc_audmux_v2_configure_port(3,
+ MXC_AUDMUX_V2_PTCR_SYN | /* 4wire mode */
+ MXC_AUDMUX_V2_PTCR_TFSEL(0) |
+ MXC_AUDMUX_V2_PTCR_TFSDIR,
+ MXC_AUDMUX_V2_PDCR_RXDSEL(0));
+
+ mxc_audmux_v2_configure_port(0,
+ MXC_AUDMUX_V2_PTCR_SYN | /* 4wire mode */
+ MXC_AUDMUX_V2_PTCR_TCSEL(3) |
+ MXC_AUDMUX_V2_PTCR_TCLKDIR, /* clock is output */
+ MXC_AUDMUX_V2_PDCR_RXDSEL(3));
+
platform_add_devices(devices, ARRAY_SIZE(devices));
mxc_register_device(&mxc_uart_device0, &uart_pdata);
mxc_register_device(&mxc_nand_device, &pcm037_nand_board_info);
+ mxc_register_device(&imx_ssi_device0, &pcm043_ssi_pdata);
mxc_register_device(&mxc_uart_device1, &uart_pdata);
diff --git a/arch/arm/plat-mxc/include/mach/ssi.h b/arch/arm/plat-mxc/include/mach/ssi.h
new file mode 100644
index 000000000000..c34ded523f10
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/ssi.h
@@ -0,0 +1,18 @@
+#ifndef __MACH_SSI_H
+#define __MACH_SSI_H
+
+struct snd_ac97;
+
+extern unsigned char imx_ssi_fiq_start, imx_ssi_fiq_end;
+extern unsigned long imx_ssi_fiq_base, imx_ssi_fiq_tx_buffer, imx_ssi_fiq_rx_buffer;
+
+struct imx_ssi_platform_data {
+ unsigned int flags;
+#define IMX_SSI_DMA (1 << 0)
+#define IMX_SSI_USE_AC97 (1 << 1)
+ void (*ac97_reset) (struct snd_ac97 *ac97);
+ void (*ac97_warm_reset)(struct snd_ac97 *ac97);
+};
+
+#endif /* __MACH_SSI_H */
+
generated by cgit v1.2.3 (git 2.0.4) at 2025-09-03 11:54:37 +0000