Signed-off-by: Sascha Hauer s.hauer@pengutronix.de --- arch/arm/mach-mx3/pcm043.c | 102 ++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 102 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-mx3/pcm043.c b/arch/arm/mach-mx3/pcm043.c index e3aa829..072f9b4 100644 --- a/arch/arm/mach-mx3/pcm043.c +++ b/arch/arm/mach-mx3/pcm043.c @@ -28,6 +28,7 @@ #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/i2c/at24.h> +#include <linux/delay.h>
#include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -44,6 +45,8 @@ #include <mach/ipu.h> #include <mach/mx3fb.h> #include <mach/mxc_nand.h> +#include <mach/audmux.h> +#include <mach/ssi.h>
#include "devices.h"
@@ -205,6 +208,91 @@ static struct pad_desc pcm043_pads[] = { MX35_PAD_D3_CLS__IPU_DISPB_D3_CLS, /* gpio */ MX35_PAD_ATA_CS0__GPIO2_6, + /* 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 = { @@ -219,12 +307,25 @@ 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(&mxc_uart_device1, &uart_pdata); + mxc_register_device(&imx_ssi_device0, &pcm043_ssi_pdata);
#if defined CONFIG_I2C_IMX || defined CONFIG_I2C_IMX_MODULE i2c_register_board_info(0, pcm043_i2c_devices, @@ -239,6 +340,7 @@ static void __init mxc_board_init(void)
static void __init pcm043_timer_init(void) { + printk("mx35_clocks_init()\n"); mx35_clocks_init(); }