diff options
Diffstat (limited to 'arch/arm/mach-nomadik/cpu-8815.c')
| -rw-r--r-- | arch/arm/mach-nomadik/cpu-8815.c | 232 |
1 files changed, 112 insertions, 120 deletions
diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c index ac58e3b03b1..9116ca476d7 100644 --- a/arch/arm/mach-nomadik/cpu-8815.c +++ b/arch/arm/mach-nomadik/cpu-8815.c @@ -21,146 +21,138 @@ #include <linux/device.h> #include <linux/amba/bus.h> #include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/irq.h> +#include <linux/dma-mapping.h> +#include <linux/of_irq.h> +#include <linux/of_gpio.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> #include <linux/gpio.h> -#include <mach/hardware.h> -#include <mach/irqs.h> +#include <asm/mach/arch.h> #include <asm/mach/map.h> -#include <asm/hardware/vic.h> +#include <asm/mach/time.h> +#include <asm/mach-types.h> #include <asm/cacheflush.h> #include <asm/hardware/cache-l2x0.h> -#include "clock.h" - -#define __MEM_4K_RESOURCE(x) \ - .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM} - -/* The 8815 has 4 GPIO blocks, let's register them immediately */ - -#define GPIO_RESOURCE(block) \ - { \ - .start = NOMADIK_GPIO##block##_BASE, \ - .end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \ - .flags = IORESOURCE_MEM, \ - }, \ - { \ - .start = IRQ_GPIO##block, \ - .end = IRQ_GPIO##block, \ - .flags = IORESOURCE_IRQ, \ - } - -#define GPIO_DEVICE(block) \ - { \ - .name = "gpio", \ - .id = block, \ - .num_resources = 2, \ - .resource = &cpu8815_gpio_resources[block * 2], \ - .dev = { \ - .platform_data = &cpu8815_gpio[block], \ - }, \ - } - -static struct nmk_gpio_platform_data cpu8815_gpio[] = { +/* + * These are the only hard-coded address offsets we still have to use. + */ +#define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */ +#define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */ +#define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */ +#define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */ +#define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */ +#define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */ +#define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */ +#define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */ +#define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */ +#define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */ +#define NOMADIK_XTI_BASE 0x101A0000 /* XTI */ +#define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */ +#define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */ +#define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */ +#define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */ +#define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */ +#define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */ +#define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */ +#define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */ +#define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */ +#define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */ +#define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */ +#define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */ +#define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */ +#define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */ +#define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */ +#define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */ +#define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */ +#define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */ +#define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */ +#define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */ +#define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */ +#define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */ +#define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */ +#define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */ +#define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */ +#define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */ +#define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */ +#define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */ +#define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */ +#define NOMADIK_UART1_VBASE 0xF01FB000 + +/* This is needed for LL-debug/earlyprintk/debug-macro.S */ +static struct map_desc cpu8815_io_desc[] __initdata = { { - .name = "GPIO-0-31", - .first_gpio = 0, - .first_irq = NOMADIK_GPIO_TO_IRQ(0), - }, { - .name = "GPIO-32-63", - .first_gpio = 32, - .first_irq = NOMADIK_GPIO_TO_IRQ(32), - }, { - .name = "GPIO-64-95", - .first_gpio = 64, - .first_irq = NOMADIK_GPIO_TO_IRQ(64), - }, { - .name = "GPIO-96-127", /* 124..127 not routed to pin */ - .first_gpio = 96, - .first_irq = NOMADIK_GPIO_TO_IRQ(96), - } -}; - -static struct resource cpu8815_gpio_resources[] = { - GPIO_RESOURCE(0), - GPIO_RESOURCE(1), - GPIO_RESOURCE(2), - GPIO_RESOURCE(3), -}; - -static struct platform_device cpu8815_platform_gpio[] = { - GPIO_DEVICE(0), - GPIO_DEVICE(1), - GPIO_DEVICE(2), - GPIO_DEVICE(3), -}; - -static struct amba_device cpu8815_amba_rng = { - .dev = { - .init_name = "rng", + .virtual = NOMADIK_UART1_VBASE, + .pfn = __phys_to_pfn(NOMADIK_UART1_BASE), + .length = SZ_4K, + .type = MT_DEVICE, }, - __MEM_4K_RESOURCE(NOMADIK_RNG_BASE), -}; - -static struct platform_device *platform_devs[] __initdata = { - cpu8815_platform_gpio + 0, - cpu8815_platform_gpio + 1, - cpu8815_platform_gpio + 2, - cpu8815_platform_gpio + 3, -}; - -static struct amba_device *amba_devs[] __initdata = { - &cpu8815_amba_rng }; -static int __init cpu8815_init(void) +static void __init cpu8815_map_io(void) { - int i; - - platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); - for (i = 0; i < ARRAY_SIZE(amba_devs); i++) - amba_device_register(amba_devs[i], &iomem_resource); - return 0; + iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc)); } -arch_initcall(cpu8815_init); - -/* All SoC devices live in the same area (see hardware.h) */ -static struct map_desc nomadik_io_desc[] __initdata = { - { - .virtual = NOMADIK_IO_VIRTUAL, - .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL), - .length = NOMADIK_IO_SIZE, - .type = MT_DEVICE, - } - /* static ram and secured ram may be added later */ -}; -void __init cpu8815_map_io(void) +static void cpu8815_restart(enum reboot_mode mode, const char *cmd) { - iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc)); -} + void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K); -void __init cpu8815_init_irq(void) -{ - /* This modified VIC cell has two register blocks, at 0 and 0x20 */ - vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0); - vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0); + /* FIXME: use egpio when implemented */ - /* - * Init clocks here so that they are available for system timer - * initialization. - */ - clk_init(); + /* Write anything to Reset status register */ + writel(1, srcbase + 0x18); } /* - * This function is called from the board init ("init_machine"). + * This GPIO pin turns on a line that is used to detect card insertion + * on this board. */ - void __init cpu8815_platform_init(void) +static int __init cpu8815_mmcsd_init(void) { -#ifdef CONFIG_CACHE_L2X0 - /* At full speed latency must be >=2, so 0x249 in low bits */ - l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff); -#endif - return; + struct device_node *cdbias; + int gpio, err; + + cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio"); + if (!cdbias) { + pr_info("could not find MMC/SD card detect bias node\n"); + return 0; + } + gpio = of_get_gpio(cdbias, 0); + if (gpio < 0) { + pr_info("could not obtain MMC/SD card detect bias GPIO\n"); + return 0; + } + err = gpio_request(gpio, "card detect bias"); + if (err) { + pr_info("failed to request card detect bias GPIO %d\n", gpio); + return -ENODEV; + } + err = gpio_direction_output(gpio, 0); + if (err){ + pr_info("failed to set GPIO %d as output, low\n", gpio); + return err; + } + pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio); + return 0; } +device_initcall(cpu8815_mmcsd_init); + +static const char * cpu8815_board_compat[] = { + "calaosystems,usb-s8815", + NULL, +}; + +DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815") + /* At full speed latency must be >=2, so 0x249 in low bits */ + .l2c_aux_val = 0x00700249, + .l2c_aux_mask = 0xfe0fefff, + .map_io = cpu8815_map_io, + .restart = cpu8815_restart, + .dt_compat = cpu8815_board_compat, +MACHINE_END |