diff options
Diffstat (limited to 'arch/arm/mach-pxa/gumstix.c')
| -rw-r--r-- | arch/arm/mach-pxa/gumstix.c | 158 |
1 files changed, 127 insertions, 31 deletions
diff --git a/arch/arm/mach-pxa/gumstix.c b/arch/arm/mach-pxa/gumstix.c index bdf23975403..00b92dad7b8 100644 --- a/arch/arm/mach-pxa/gumstix.c +++ b/arch/arm/mach-pxa/gumstix.c @@ -20,13 +20,18 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/interrupt.h> +#include <linux/delay.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> +#include <linux/gpio.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/usb/gpio_vbus.h> #include <asm/setup.h> #include <asm/memory.h> #include <asm/mach-types.h> -#include <asm/hardware.h> +#include <mach/hardware.h> #include <asm/irq.h> #include <asm/sizes.h> @@ -34,13 +39,11 @@ #include <asm/mach/map.h> #include <asm/mach/irq.h> #include <asm/mach/flash.h> -#include <asm/arch/mmc.h> -#include <asm/arch/udc.h> -#include <asm/arch/gumstix.h> -#include <asm/arch/pxa-regs.h> -#include <asm/arch/pxa2xx-regs.h> -#include <asm/arch/pxa2xx-gpio.h> +#include <mach/pxa25x.h> +#include <linux/platform_data/mmc-pxamci.h> +#include <mach/udc.h> +#include <mach/gumstix.h> #include "generic.h" @@ -85,21 +88,11 @@ static struct platform_device *devices[] __initdata = { }; #ifdef CONFIG_MMC_PXA -static struct pxamci_platform_data gumstix_mci_platform_data; - -static int gumstix_mci_init(struct device *dev, irq_handler_t detect_int, - void *data) -{ - pxa_gpio_mode(GPIO6_MMCCLK_MD); - pxa_gpio_mode(GPIO53_MMCCLK_MD); - pxa_gpio_mode(GPIO8_MMCCS0_MD); - - return 0; -} - static struct pxamci_platform_data gumstix_mci_platform_data = { - .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, - .init = gumstix_mci_init, + .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, + .gpio_card_detect = -1, + .gpio_card_ro = -1, + .gpio_power = -1, }; static void __init gumstix_mmc_init(void) @@ -109,40 +102,143 @@ static void __init gumstix_mmc_init(void) #else static void __init gumstix_mmc_init(void) { - printk(KERN_INFO "Gumstix mmc disabled\n"); + pr_debug("Gumstix mmc disabled\n"); } #endif -#ifdef CONFIG_USB_GADGET_PXA2XX -static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = { +#ifdef CONFIG_USB_PXA25X +static struct gpio_vbus_mach_info gumstix_udc_info = { .gpio_vbus = GPIO_GUMSTIX_USB_GPIOn, .gpio_pullup = GPIO_GUMSTIX_USB_GPIOx, }; +static struct platform_device gumstix_gpio_vbus = { + .name = "gpio-vbus", + .id = -1, + .dev = { + .platform_data = &gumstix_udc_info, + }, +}; + static void __init gumstix_udc_init(void) { - pxa_set_udc_info(&gumstix_udc_info); + platform_device_register(&gumstix_gpio_vbus); } #else static void gumstix_udc_init(void) { - printk(KERN_INFO "Gumstix udc is disabled\n"); + pr_debug("Gumstix udc is disabled\n"); } #endif +#ifdef CONFIG_BT +/* Normally, the bootloader would have enabled this 32kHz clock but many +** boards still have u-boot 1.1.4 so we check if it has been turned on and +** if not, we turn it on with a warning message. */ +static void gumstix_setup_bt_clock(void) +{ + int timeout = 500; + + if (!(OSCC & OSCC_OOK)) + pr_warning("32kHz clock was not on. Bootloader may need to " + "be updated\n"); + else + return; + + OSCC |= OSCC_OON; + do { + if (OSCC & OSCC_OOK) + break; + udelay(1); + } while (--timeout); + if (!timeout) + pr_err("Failed to start 32kHz clock\n"); +} + +static void __init gumstix_bluetooth_init(void) +{ + int err; + + gumstix_setup_bt_clock(); + + err = gpio_request(GPIO_GUMSTIX_BTRESET, "BTRST"); + if (err) { + pr_err("gumstix: failed request gpio for bluetooth reset\n"); + return; + } + + err = gpio_direction_output(GPIO_GUMSTIX_BTRESET, 1); + if (err) { + pr_err("gumstix: can't reset bluetooth\n"); + return; + } + gpio_set_value(GPIO_GUMSTIX_BTRESET, 0); + udelay(100); + gpio_set_value(GPIO_GUMSTIX_BTRESET, 1); +} +#else +static void gumstix_bluetooth_init(void) +{ + pr_debug("Gumstix Bluetooth is disabled\n"); +} +#endif + +static unsigned long gumstix_pin_config[] __initdata = { + GPIO12_32KHz, + /* BTUART */ + GPIO42_HWUART_RXD, + GPIO43_HWUART_TXD, + GPIO44_HWUART_CTS, + GPIO45_HWUART_RTS, + /* MMC */ + GPIO6_MMC_CLK, + GPIO53_MMC_CLK, + GPIO8_MMC_CS0, +}; + +int __attribute__((weak)) am200_init(void) +{ + return 0; +} + +int __attribute__((weak)) am300_init(void) +{ + return 0; +} + +static void __init carrier_board_init(void) +{ + /* + * put carrier/expansion board init here if + * they cannot be detected programatically + */ + am200_init(); + am300_init(); +} + static void __init gumstix_init(void) { + pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config)); + + pxa_set_ffuart_info(NULL); + pxa_set_btuart_info(NULL); + pxa_set_stuart_info(NULL); + pxa_set_hwuart_info(NULL); + + gumstix_bluetooth_init(); gumstix_udc_init(); gumstix_mmc_init(); (void) platform_add_devices(devices, ARRAY_SIZE(devices)); + carrier_board_init(); } MACHINE_START(GUMSTIX, "Gumstix") - .phys_io = 0x40000000, - .boot_params = 0xa0000100, /* match u-boot bi_boot_params */ - .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, - .map_io = pxa_map_io, + .atag_offset = 0x100, /* match u-boot bi_boot_params */ + .map_io = pxa25x_map_io, + .nr_irqs = PXA_NR_IRQS, .init_irq = pxa25x_init_irq, - .timer = &pxa_timer, + .handle_irq = pxa25x_handle_irq, + .init_time = pxa_timer_init, .init_machine = gumstix_init, + .restart = pxa_restart, MACHINE_END |