diff options
author | Jiri Kosina <jkosina@suse.cz> | 2010-04-23 02:08:44 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2010-04-23 02:08:44 +0200 |
commit | 6c9468e9eb1252eaefd94ce7f06e1be9b0b641b1 (patch) | |
tree | 797676a336b050bfa1ef879377c07e541b9075d6 /arch/arm/mach-omap2/board-n8x0.c | |
parent | 4cb3ca7cd7e2cae8d1daf5345ec99a1e8502cf3f (diff) | |
parent | c81eddb0e3728661d1585fbc564449c94165cc36 (diff) |
Merge branch 'master' into for-next
Diffstat (limited to 'arch/arm/mach-omap2/board-n8x0.c')
-rw-r--r-- | arch/arm/mach-omap2/board-n8x0.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c index 4cab0522d7ce..da9bcb898991 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, @@ -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") |