diff options
Diffstat (limited to 'arch/arm/mach-pxa/generic.c')
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 203 |
1 files changed, 36 insertions, 167 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 698aeec5296..42254175fcf 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -16,203 +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/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/gpio.h> +#include <mach/reset.h> +#include <mach/smemc.h> +#include <mach/pxa3xx-regs.h> #include "generic.h" -/* - * 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. - */ -unsigned int get_clk_frequency_khz(int info) +void clear_reset_status(unsigned int mask) { - if (cpu_is_pxa21x() || cpu_is_pxa25x()) - return pxa25x_get_clk_frequency_khz(info); - else if (cpu_is_pxa27x()) - return pxa27x_get_clk_frequency_khz(info); - else - return pxa3xx_get_clk_frequency_khz(info); -} -EXPORT_SYMBOL(get_clk_frequency_khz); - -/* - * Return the current memory clock frequency in units of 10kHz - */ -unsigned int get_memclk_frequency_10khz(void) -{ - if (cpu_is_pxa21x() || cpu_is_pxa25x()) - return pxa25x_get_memclk_frequency_10khz(); - else if (cpu_is_pxa27x()) - return pxa27x_get_memclk_frequency_10khz(); - else - return pxa3xx_get_memclk_frequency_10khz(); + if (cpu_is_pxa2xx()) + pxa2xx_clear_reset_status(mask); + else { + /* RESET_STATUS_* has a 1:1 mapping with ARSR */ + ARSR = mask; + } } -EXPORT_SYMBOL(get_memclk_frequency_10khz); -/* - * Handy function to set GPIO alternate functions - */ -int pxa_last_gpio; - -int 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; - if (gpio > pxa_last_gpio) - return -EINVAL; - - 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; - return 0; + return clock_tick_rate; } - -EXPORT_SYMBOL(pxa_gpio_mode); - -int gpio_direction_input(unsigned gpio) -{ - unsigned long flags; - u32 mask; - - if (gpio > pxa_last_gpio) - return -EINVAL; - - mask = GPIO_bit(gpio); - local_irq_save(flags); - GPDR(gpio) &= ~mask; - local_irq_restore(flags); - - return 0; -} -EXPORT_SYMBOL(gpio_direction_input); - -int gpio_direction_output(unsigned gpio, int value) -{ - unsigned long flags; - u32 mask; - - if (gpio > pxa_last_gpio) - return -EINVAL; - - mask = GPIO_bit(gpio); - local_irq_save(flags); - if (value) - GPSR(gpio) = mask; - else - GPCR(gpio) = mask; - GPDR(gpio) |= mask; - local_irq_restore(flags); - - return 0; -} -EXPORT_SYMBOL(gpio_direction_output); - -/* - * Return GPIO level - */ -int pxa_gpio_get_value(unsigned gpio) -{ - return __gpio_get_value(gpio); -} - -EXPORT_SYMBOL(pxa_gpio_get_value); +EXPORT_SYMBOL(get_clock_tick_rate); /* - * Set output GPIO level - */ -void pxa_gpio_set_value(unsigned gpio, int value) -{ - __gpio_set_value(gpio, value); -} - -EXPORT_SYMBOL(pxa_gpio_set_value); - -/* - * 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 |= (1 << clock); - else - CKEN &= ~(1 << 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 = 0x00200000, - .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), @@ -223,6 +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)); } |