diff options
Diffstat (limited to 'arch/arm/mach-pxa/generic.c')
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 332 |
1 files changed, 39 insertions, 293 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 9b48a90aefc..42254175fcf 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -16,114 +16,73 @@ * initialization stuff for PXA machines which can be overridden later if * need be. */ +#include <linux/gpio.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/ioport.h> -#include <linux/pm.h> -#include <linux/string.h> -#include <asm/hardware.h> -#include <asm/irq.h> -#include <asm/system.h> -#include <asm/pgtable.h> +#include <mach/hardware.h> #include <asm/mach/map.h> +#include <asm/mach-types.h> -#include <asm/arch/pxa-regs.h> -#include <asm/arch/udc.h> -#include <asm/arch/pxafb.h> -#include <asm/arch/mmc.h> -#include <asm/arch/irda.h> -#include <asm/arch/i2c.h> +#include <mach/reset.h> +#include <mach/smemc.h> +#include <mach/pxa3xx-regs.h> #include "generic.h" -/* - * Handy function to set GPIO alternate functions - */ +void clear_reset_status(unsigned int mask) +{ + if (cpu_is_pxa2xx()) + pxa2xx_clear_reset_status(mask); + else { + /* RESET_STATUS_* has a 1:1 mapping with ARSR */ + ARSR = mask; + } +} -void pxa_gpio_mode(int gpio_mode) +unsigned long get_clock_tick_rate(void) { - unsigned long flags; - int gpio = gpio_mode & GPIO_MD_MASK_NR; - int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; - int gafr; + unsigned long clock_tick_rate; - local_irq_save(flags); - if (gpio_mode & GPIO_DFLT_LOW) - GPCR(gpio) = GPIO_bit(gpio); - else if (gpio_mode & GPIO_DFLT_HIGH) - GPSR(gpio) = GPIO_bit(gpio); - if (gpio_mode & GPIO_MD_MASK_DIR) - GPDR(gpio) |= GPIO_bit(gpio); + if (cpu_is_pxa25x()) + clock_tick_rate = 3686400; + else if (machine_is_mainstone()) + clock_tick_rate = 3249600; else - GPDR(gpio) &= ~GPIO_bit(gpio); - gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2)); - GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2)); - local_irq_restore(flags); -} + clock_tick_rate = 3250000; -EXPORT_SYMBOL(pxa_gpio_mode); + return clock_tick_rate; +} +EXPORT_SYMBOL(get_clock_tick_rate); /* - * Routine to safely enable or disable a clock in the CKEN + * Get the clock frequency as reflected by CCCR and the turbo flag. + * We assume these values have been applied via a fcs. + * If info is not 0 we also display the current settings. */ -void pxa_set_cken(int clock, int enable) +unsigned int get_clk_frequency_khz(int info) { - unsigned long flags; - local_irq_save(flags); - - if (enable) - CKEN |= clock; - else - CKEN &= ~clock; - - local_irq_restore(flags); + if (cpu_is_pxa25x()) + return pxa25x_get_clk_frequency_khz(info); + else if (cpu_is_pxa27x()) + return pxa27x_get_clk_frequency_khz(info); + return 0; } - -EXPORT_SYMBOL(pxa_set_cken); +EXPORT_SYMBOL(get_clk_frequency_khz); /* * Intel PXA2xx internal register mapping. * - * Note 1: not all PXA2xx variants implement all those addresses. - * - * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table - * and cache flush area. + * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table + * and cache flush area. */ -static struct map_desc standard_io_desc[] __initdata = { +static struct map_desc common_io_desc[] __initdata = { { /* Devs */ .virtual = 0xf2000000, .pfn = __phys_to_pfn(0x40000000), .length = 0x02000000, .type = MT_DEVICE - }, { /* LCD */ - .virtual = 0xf4000000, - .pfn = __phys_to_pfn(0x44000000), - .length = 0x00100000, - .type = MT_DEVICE - }, { /* Mem Ctl */ - .virtual = 0xf6000000, - .pfn = __phys_to_pfn(0x48000000), - .length = 0x00100000, - .type = MT_DEVICE - }, { /* USB host */ - .virtual = 0xf8000000, - .pfn = __phys_to_pfn(0x4c000000), - .length = 0x00100000, - .type = MT_DEVICE - }, { /* Camera */ - .virtual = 0xfa000000, - .pfn = __phys_to_pfn(0x50000000), - .length = 0x00100000, - .type = MT_DEVICE - }, { /* IMem ctl */ - .virtual = 0xfe000000, - .pfn = __phys_to_pfn(0x58000000), - .length = 0x00100000, - .type = MT_DEVICE }, { /* UNCACHED_PHYS_0 */ .virtual = 0xff000000, .pfn = __phys_to_pfn(0x00000000), @@ -134,218 +93,5 @@ static struct map_desc standard_io_desc[] __initdata = { void __init pxa_map_io(void) { - iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); - get_clk_frequency_khz(1); + iotable_init(ARRAY_AND_SIZE(common_io_desc)); } - - -static struct resource pxamci_resources[] = { - [0] = { - .start = 0x41100000, - .end = 0x41100fff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_MMC, - .end = IRQ_MMC, - .flags = IORESOURCE_IRQ, - }, -}; - -static u64 pxamci_dmamask = 0xffffffffUL; - -static struct platform_device pxamci_device = { - .name = "pxa2xx-mci", - .id = -1, - .dev = { - .dma_mask = &pxamci_dmamask, - .coherent_dma_mask = 0xffffffff, - }, - .num_resources = ARRAY_SIZE(pxamci_resources), - .resource = pxamci_resources, -}; - -void __init pxa_set_mci_info(struct pxamci_platform_data *info) -{ - pxamci_device.dev.platform_data = info; -} - - -static struct pxa2xx_udc_mach_info pxa_udc_info; - -void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info) -{ - memcpy(&pxa_udc_info, info, sizeof *info); -} - -static struct resource pxa2xx_udc_resources[] = { - [0] = { - .start = 0x40600000, - .end = 0x4060ffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_USB, - .end = IRQ_USB, - .flags = IORESOURCE_IRQ, - }, -}; - -static u64 udc_dma_mask = ~(u32)0; - -static struct platform_device udc_device = { - .name = "pxa2xx-udc", - .id = -1, - .resource = pxa2xx_udc_resources, - .num_resources = ARRAY_SIZE(pxa2xx_udc_resources), - .dev = { - .platform_data = &pxa_udc_info, - .dma_mask = &udc_dma_mask, - } -}; - -static struct pxafb_mach_info pxa_fb_info; - -void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info) -{ - memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info)); -} - -static struct resource pxafb_resources[] = { - [0] = { - .start = 0x44000000, - .end = 0x4400ffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_LCD, - .end = IRQ_LCD, - .flags = IORESOURCE_IRQ, - }, -}; - -static u64 fb_dma_mask = ~(u64)0; - -static struct platform_device pxafb_device = { - .name = "pxa2xx-fb", - .id = -1, - .dev = { - .platform_data = &pxa_fb_info, - .dma_mask = &fb_dma_mask, - .coherent_dma_mask = 0xffffffff, - }, - .num_resources = ARRAY_SIZE(pxafb_resources), - .resource = pxafb_resources, -}; - -void __init set_pxa_fb_parent(struct device *parent_dev) -{ - pxafb_device.dev.parent = parent_dev; -} - -static struct platform_device ffuart_device = { - .name = "pxa2xx-uart", - .id = 0, -}; -static struct platform_device btuart_device = { - .name = "pxa2xx-uart", - .id = 1, -}; -static struct platform_device stuart_device = { - .name = "pxa2xx-uart", - .id = 2, -}; -static struct platform_device hwuart_device = { - .name = "pxa2xx-uart", - .id = 3, -}; - -static struct resource i2c_resources[] = { - { - .start = 0x40301680, - .end = 0x403016a3, - .flags = IORESOURCE_MEM, - }, { - .start = IRQ_I2C, - .end = IRQ_I2C, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct platform_device i2c_device = { - .name = "pxa2xx-i2c", - .id = 0, - .resource = i2c_resources, - .num_resources = ARRAY_SIZE(i2c_resources), -}; - -void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info) -{ - i2c_device.dev.platform_data = info; -} - -static struct resource i2s_resources[] = { - { - .start = 0x40400000, - .end = 0x40400083, - .flags = IORESOURCE_MEM, - }, { - .start = IRQ_I2S, - .end = IRQ_I2S, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct platform_device i2s_device = { - .name = "pxa2xx-i2s", - .id = -1, - .resource = i2s_resources, - .num_resources = ARRAY_SIZE(i2s_resources), -}; - -static u64 pxaficp_dmamask = ~(u32)0; - -static struct platform_device pxaficp_device = { - .name = "pxa2xx-ir", - .id = -1, - .dev = { - .dma_mask = &pxaficp_dmamask, - .coherent_dma_mask = 0xffffffff, - }, -}; - -void __init pxa_set_ficp_info(struct pxaficp_platform_data *info) -{ - pxaficp_device.dev.platform_data = info; -} - -static struct platform_device *devices[] __initdata = { - &pxamci_device, - &udc_device, - &pxafb_device, - &ffuart_device, - &btuart_device, - &stuart_device, - &pxaficp_device, - &i2c_device, - &i2s_device, -}; - -static int __init pxa_init(void) -{ - int cpuid, ret; - - ret = platform_add_devices(devices, ARRAY_SIZE(devices)); - if (ret) - return ret; - - /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */ - cpuid = read_cpuid(CPUID_ID); - if (((cpuid >> 4) & 0xfff) == 0x2d0 || - ((cpuid >> 4) & 0xfff) == 0x290) - ret = platform_device_register(&hwuart_device); - - return ret; -} - -subsys_initcall(pxa_init); |