diff options
Diffstat (limited to 'arch/arm/mach-omap2/board-n8x0.c')
-rw-r--r-- | arch/arm/mach-omap2/board-n8x0.c | 116 |
1 files changed, 107 insertions, 9 deletions
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c index 4cab0522d7c..3ccc34ebdcc 100644 --- a/arch/arm/mach-omap2/board-n8x0.c +++ b/arch/arm/mach-omap2/board-n8x0.c @@ -37,6 +37,103 @@ static int slot1_cover_open; static int slot2_cover_open; static struct device *mmc_device; +#define TUSB6010_ASYNC_CS 1 +#define TUSB6010_SYNC_CS 4 +#define TUSB6010_GPIO_INT 58 +#define TUSB6010_GPIO_ENABLE 0 +#define TUSB6010_DMACHAN 0x3f + +#if defined(CONFIG_USB_TUSB6010) || \ + defined(CONFIG_USB_TUSB6010_MODULE) +/* + * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and + * 1.5 V voltage regulators of PM companion chip. Companion chip will then + * provide then PGOOD signal to TUSB6010 which will release it from reset. + */ +static int tusb_set_power(int state) +{ + int i, retval = 0; + + if (state) { + gpio_set_value(TUSB6010_GPIO_ENABLE, 1); + msleep(1); + + /* Wait until TUSB6010 pulls INT pin down */ + i = 100; + while (i && gpio_get_value(TUSB6010_GPIO_INT)) { + msleep(1); + i--; + } + + if (!i) { + printk(KERN_ERR "tusb: powerup failed\n"); + retval = -ENODEV; + } + } else { + gpio_set_value(TUSB6010_GPIO_ENABLE, 0); + msleep(10); + } + + return retval; +} + +static struct musb_hdrc_config musb_config = { + .multipoint = 1, + .dyn_fifo = 1, + .num_eps = 16, + .ram_bits = 12, +}; + +static struct musb_hdrc_platform_data tusb_data = { +#if defined(CONFIG_USB_MUSB_OTG) + .mode = MUSB_OTG, +#elif defined(CONFIG_USB_MUSB_PERIPHERAL) + .mode = MUSB_PERIPHERAL, +#else /* defined(CONFIG_USB_MUSB_HOST) */ + .mode = MUSB_HOST, +#endif + .set_power = tusb_set_power, + .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */ + .power = 100, /* Max 100 mA VBUS for host mode */ + .config = &musb_config, +}; + +static void __init n8x0_usb_init(void) +{ + int ret = 0; + static char announce[] __initdata = KERN_INFO "TUSB 6010\n"; + + /* PM companion chip power control pin */ + ret = gpio_request(TUSB6010_GPIO_ENABLE, "TUSB6010 enable"); + if (ret != 0) { + printk(KERN_ERR "Could not get TUSB power GPIO%i\n", + TUSB6010_GPIO_ENABLE); + return; + } + gpio_direction_output(TUSB6010_GPIO_ENABLE, 0); + + tusb_set_power(0); + + ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2, + TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS, + TUSB6010_GPIO_INT, TUSB6010_DMACHAN); + if (ret != 0) + goto err; + + printk(announce); + + return; + +err: + gpio_free(TUSB6010_GPIO_ENABLE); +} +#else + +static void __init n8x0_usb_init(void) {} + +#endif /*CONFIG_USB_TUSB6010 */ + + static struct omap2_mcspi_device_config p54spi_mcspi_config = { .turbo_mode = 0, .single_channel = 1, @@ -119,7 +216,7 @@ static void __init n8x0_onenand_init(void) {} */ #define N8X0_SLOT_SWITCH_GPIO 96 #define N810_EMMC_VSD_GPIO 23 -#define NN810_EMMC_VIO_GPIO 9 +#define N810_EMMC_VIO_GPIO 9 static int n8x0_mmc_switch_slot(struct device *dev, int slot) { @@ -207,10 +304,10 @@ static void n810_set_power_emmc(struct device *dev, if (power_on) { gpio_set_value(N810_EMMC_VSD_GPIO, 1); msleep(1); - gpio_set_value(NN810_EMMC_VIO_GPIO, 1); + gpio_set_value(N810_EMMC_VIO_GPIO, 1); msleep(1); } else { - gpio_set_value(NN810_EMMC_VIO_GPIO, 0); + gpio_set_value(N810_EMMC_VIO_GPIO, 0); msleep(50); gpio_set_value(N810_EMMC_VSD_GPIO, 0); msleep(50); @@ -371,7 +468,7 @@ static void n8x0_mmc_cleanup(struct device *dev) if (machine_is_nokia_n810()) { gpio_free(N810_EMMC_VSD_GPIO); - gpio_free(NN810_EMMC_VIO_GPIO); + gpio_free(N810_EMMC_VIO_GPIO); } } @@ -432,7 +529,7 @@ void __init n8x0_mmc_init(void) err = gpio_request(N8X0_SLOT_SWITCH_GPIO, "MMC slot switch"); if (err) - return err; + return; gpio_direction_output(N8X0_SLOT_SWITCH_GPIO, 0); @@ -440,17 +537,17 @@ void __init n8x0_mmc_init(void) err = gpio_request(N810_EMMC_VSD_GPIO, "MMC slot 2 Vddf"); if (err) { gpio_free(N8X0_SLOT_SWITCH_GPIO); - return err; + return; } gpio_direction_output(N810_EMMC_VSD_GPIO, 0); - err = gpio_request(NN810_EMMC_VIO_GPIO, "MMC slot 2 Vdd"); + err = gpio_request(N810_EMMC_VIO_GPIO, "MMC slot 2 Vdd"); if (err) { gpio_free(N8X0_SLOT_SWITCH_GPIO); gpio_free(N810_EMMC_VSD_GPIO); - return err; + return; } - gpio_direction_output(NN810_EMMC_VIO_GPIO, 0); + gpio_direction_output(N810_EMMC_VIO_GPIO, 0); } mmc_data[0] = &mmc1_data; @@ -562,6 +659,7 @@ static void __init n8x0_init_machine(void) n8x0_menelaus_init(); n8x0_onenand_init(); n8x0_mmc_init(); + n8x0_usb_init(); } MACHINE_START(NOKIA_N800, "Nokia N800") |