diff options
Diffstat (limited to 'arch/arm/mach-sa1100/generic.c')
| -rw-r--r-- | arch/arm/mach-sa1100/generic.c | 340 |
1 files changed, 132 insertions, 208 deletions
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 5c84c604ed8..d4ea142c4ed 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -9,166 +9,65 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <linux/gpio.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> +#include <linux/dma-mapping.h> #include <linux/pm.h> #include <linux/cpufreq.h> #include <linux/ioport.h> -#include <linux/sched.h> /* just for sched_clock() - funny that */ #include <linux/platform_device.h> +#include <linux/reboot.h> + +#include <video/sa1100fb.h> #include <asm/div64.h> -#include <asm/cnt32_to_63.h> -#include <asm/hardware.h> -#include <asm/system.h> -#include <asm/pgtable.h> #include <asm/mach/map.h> #include <asm/mach/flash.h> #include <asm/irq.h> -#include <asm/gpio.h> +#include <asm/system_misc.h> + +#include <mach/hardware.h> +#include <mach/irqs.h> #include "generic.h" +unsigned int reset_status; +EXPORT_SYMBOL(reset_status); + #define NR_FREQS 16 /* * This table is setup for a 3.6864MHz Crystal. */ -static const unsigned short cclk_frequency_100khz[NR_FREQS] = { - 590, /* 59.0 MHz */ - 737, /* 73.7 MHz */ - 885, /* 88.5 MHz */ - 1032, /* 103.2 MHz */ - 1180, /* 118.0 MHz */ - 1327, /* 132.7 MHz */ - 1475, /* 147.5 MHz */ - 1622, /* 162.2 MHz */ - 1769, /* 176.9 MHz */ - 1917, /* 191.7 MHz */ - 2064, /* 206.4 MHz */ - 2212, /* 221.2 MHz */ - 2359, /* 235.9 MHz */ - 2507, /* 250.7 MHz */ - 2654, /* 265.4 MHz */ - 2802 /* 280.2 MHz */ +struct cpufreq_frequency_table sa11x0_freq_table[NR_FREQS+1] = { + { .frequency = 59000, /* 59.0 MHz */}, + { .frequency = 73700, /* 73.7 MHz */}, + { .frequency = 88500, /* 88.5 MHz */}, + { .frequency = 103200, /* 103.2 MHz */}, + { .frequency = 118000, /* 118.0 MHz */}, + { .frequency = 132700, /* 132.7 MHz */}, + { .frequency = 147500, /* 147.5 MHz */}, + { .frequency = 162200, /* 162.2 MHz */}, + { .frequency = 176900, /* 176.9 MHz */}, + { .frequency = 191700, /* 191.7 MHz */}, + { .frequency = 206400, /* 206.4 MHz */}, + { .frequency = 221200, /* 221.2 MHz */}, + { .frequency = 235900, /* 235.9 MHz */}, + { .frequency = 250700, /* 250.7 MHz */}, + { .frequency = 265400, /* 265.4 MHz */}, + { .frequency = 280200, /* 280.2 MHz */}, + { .frequency = CPUFREQ_TABLE_END, }, }; -#if defined(CONFIG_CPU_FREQ_SA1100) || defined(CONFIG_CPU_FREQ_SA1110) -/* rounds up(!) */ -unsigned int sa11x0_freq_to_ppcr(unsigned int khz) -{ - int i; - - khz /= 100; - - for (i = 0; i < NR_FREQS; i++) - if (cclk_frequency_100khz[i] >= khz) - break; - - return i; -} - -unsigned int sa11x0_ppcr_to_freq(unsigned int idx) -{ - unsigned int freq = 0; - if (idx < NR_FREQS) - freq = cclk_frequency_100khz[idx] * 100; - return freq; -} - - -/* make sure that only the "userspace" governor is run -- anything else wouldn't make sense on - * this platform, anyway. - */ -int sa11x0_verify_speed(struct cpufreq_policy *policy) -{ - unsigned int tmp; - if (policy->cpu) - return -EINVAL; - - cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, policy->cpuinfo.max_freq); - - /* make sure that at least one frequency is within the policy */ - tmp = cclk_frequency_100khz[sa11x0_freq_to_ppcr(policy->min)] * 100; - if (tmp > policy->max) - policy->max = tmp; - - cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, policy->cpuinfo.max_freq); - - return 0; -} - unsigned int sa11x0_getspeed(unsigned int cpu) { if (cpu) return 0; - return cclk_frequency_100khz[PPCR & 0xf] * 100; -} - -#else -/* - * We still need to provide this so building without cpufreq works. - */ -unsigned int cpufreq_get(unsigned int cpu) -{ - return cclk_frequency_100khz[PPCR & 0xf] * 100; + return sa11x0_freq_table[PPCR & 0xf].frequency; } -EXPORT_SYMBOL(cpufreq_get); -#endif - -/* - * This is the SA11x0 sched_clock implementation. This has - * a resolution of 271ns, and a maximum value of 32025597s (370 days). - * - * The return value is guaranteed to be monotonic in that range as - * long as there is always less than 582 seconds between successive - * calls to this function. - * - * ( * 1E9 / 3686400 => * 78125 / 288) - */ -unsigned long long sched_clock(void) -{ - unsigned long long v = cnt32_to_63(OSCR); - - /* the <<1 gets rid of the cnt_32_to_63 top bit saving on a bic insn */ - v *= 78125<<1; - do_div(v, 288<<1); - - return v; -} - -int gpio_direction_input(unsigned gpio) -{ - unsigned long flags; - - if (gpio > GPIO_MAX) - return -EINVAL; - - local_irq_save(flags); - GPDR &= ~GPIO_GPIO(gpio); - local_irq_restore(flags); - return 0; -} - -EXPORT_SYMBOL(gpio_direction_input); - -int gpio_direction_output(unsigned gpio, int value) -{ - unsigned long flags; - - if (gpio > GPIO_MAX) - return -EINVAL; - - local_irq_save(flags); - gpio_set_value(gpio, value); - GPDR |= GPIO_GPIO(gpio); - local_irq_restore(flags); - return 0; -} - -EXPORT_SYMBOL(gpio_direction_output); /* * Default power-off for SA1100 @@ -190,12 +89,31 @@ static void sa1100_power_off(void) PMCR = PMCR_SF; } +void sa11x0_restart(enum reboot_mode mode, const char *cmd) +{ + if (mode == REBOOT_SOFT) { + /* Jump into ROM at address 0 */ + soft_restart(0); + } else { + /* Use on-chip reset capability */ + RSRR = RSRR_SWR; + } +} + +static void sa11x0_register_device(struct platform_device *dev, void *data) +{ + int err; + dev->dev.platform_data = data; + err = platform_device_register(dev); + if (err) + printk(KERN_ERR "Unable to register device %s: %d\n", + dev->name, err); +} + + static struct resource sa11x0udc_resources[] = { - [0] = { - .start = 0x80000000, - .end = 0x8000ffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser0UDCCR), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser0UDC), }; static u64 sa11x0udc_dma_mask = 0xffffffffUL; @@ -212,11 +130,8 @@ static struct platform_device sa11x0udc_device = { }; static struct resource sa11x0uart1_resources[] = { - [0] = { - .start = 0x80010000, - .end = 0x8001ffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser1UTCR0), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser1UART), }; static struct platform_device sa11x0uart1_device = { @@ -227,11 +142,8 @@ static struct platform_device sa11x0uart1_device = { }; static struct resource sa11x0uart3_resources[] = { - [0] = { - .start = 0x80050000, - .end = 0x8005ffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser3UTCR0), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser3UART), }; static struct platform_device sa11x0uart3_device = { @@ -242,11 +154,9 @@ static struct platform_device sa11x0uart3_device = { }; static struct resource sa11x0mcp_resources[] = { - [0] = { - .start = 0x80060000, - .end = 0x8006ffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(__PREG(Ser4MCCR0), SZ_64K), + [1] = DEFINE_RES_MEM(__PREG(Ser4MCCR1), 4), + [2] = DEFINE_RES_IRQ(IRQ_Ser4MCP), }; static u64 sa11x0mcp_dma_mask = 0xffffffffUL; @@ -262,17 +172,24 @@ static struct platform_device sa11x0mcp_device = { .resource = sa11x0mcp_resources, }; -void sa11x0_set_mcp_data(struct mcp_plat_data *data) +void __init sa11x0_ppc_configure_mcp(void) { - sa11x0mcp_device.dev.platform_data = data; + /* Setup the PPC unit for the MCP */ + PPDR &= ~PPC_RXD4; + PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; + PSDR |= PPC_RXD4; + PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); + PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); +} + +void sa11x0_register_mcp(struct mcp_plat_data *data) +{ + sa11x0_register_device(&sa11x0mcp_device, data); } static struct resource sa11x0ssp_resources[] = { - [0] = { - .start = 0x80070000, - .end = 0x8007ffff, - .flags = IORESOURCE_MEM, - }, + [0] = DEFINE_RES_MEM(0x80070000, SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser4SSP), }; static u64 sa11x0ssp_dma_mask = 0xffffffffUL; @@ -289,16 +206,8 @@ static struct platform_device sa11x0ssp_device = { }; static struct resource sa11x0fb_resources[] = { - [0] = { - .start = 0xb0100000, - .end = 0xb010ffff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_LCD, - .end = IRQ_LCD, - .flags = IORESOURCE_IRQ, - }, + [0] = DEFINE_RES_MEM(0xb0100000, SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_LCD), }; static struct platform_device sa11x0fb_device = { @@ -311,43 +220,35 @@ static struct platform_device sa11x0fb_device = { .resource = sa11x0fb_resources, }; +void sa11x0_register_lcd(struct sa1100fb_mach_info *inf) +{ + sa11x0_register_device(&sa11x0fb_device, inf); +} + static struct platform_device sa11x0pcmcia_device = { .name = "sa11x0-pcmcia", .id = -1, }; static struct platform_device sa11x0mtd_device = { - .name = "flash", + .name = "sa1100-mtd", .id = -1, }; -void sa11x0_set_flash_data(struct flash_platform_data *flash, - struct resource *res, int nr) +void sa11x0_register_mtd(struct flash_platform_data *flash, + struct resource *res, int nr) { flash->name = "sa1100"; - sa11x0mtd_device.dev.platform_data = flash; sa11x0mtd_device.resource = res; sa11x0mtd_device.num_resources = nr; + sa11x0_register_device(&sa11x0mtd_device, flash); } static struct resource sa11x0ir_resources[] = { - { - .start = __PREG(Ser2UTCR0), - .end = __PREG(Ser2UTCR0) + 0x24 - 1, - .flags = IORESOURCE_MEM, - }, { - .start = __PREG(Ser2HSCR0), - .end = __PREG(Ser2HSCR0) + 0x1c - 1, - .flags = IORESOURCE_MEM, - }, { - .start = __PREG(Ser2HSCR2), - .end = __PREG(Ser2HSCR2) + 0x04 - 1, - .flags = IORESOURCE_MEM, - }, { - .start = IRQ_Ser2ICP, - .end = IRQ_Ser2ICP, - .flags = IORESOURCE_IRQ, - } + DEFINE_RES_MEM(__PREG(Ser2UTCR0), 0x24), + DEFINE_RES_MEM(__PREG(Ser2HSCR0), 0x1c), + DEFINE_RES_MEM(__PREG(Ser2HSCR2), 0x04), + DEFINE_RES_IRQ(IRQ_Ser2ICP), }; static struct platform_device sa11x0ir_device = { @@ -357,46 +258,69 @@ static struct platform_device sa11x0ir_device = { .resource = sa11x0ir_resources, }; -void sa11x0_set_irda_data(struct irda_platform_data *irda) +void sa11x0_register_irda(struct irda_platform_data *irda) { - sa11x0ir_device.dev.platform_data = irda; + sa11x0_register_device(&sa11x0ir_device, irda); } +static struct resource sa1100_rtc_resources[] = { + DEFINE_RES_MEM(0x90010000, 0x40), + DEFINE_RES_IRQ_NAMED(IRQ_RTC1Hz, "rtc 1Hz"), + DEFINE_RES_IRQ_NAMED(IRQ_RTCAlrm, "rtc alarm"), +}; + static struct platform_device sa11x0rtc_device = { .name = "sa1100-rtc", .id = -1, + .num_resources = ARRAY_SIZE(sa1100_rtc_resources), + .resource = sa1100_rtc_resources, +}; + +static struct resource sa11x0dma_resources[] = { + DEFINE_RES_MEM(DMA_PHYS, DMA_SIZE), + DEFINE_RES_IRQ(IRQ_DMA0), + DEFINE_RES_IRQ(IRQ_DMA1), + DEFINE_RES_IRQ(IRQ_DMA2), + DEFINE_RES_IRQ(IRQ_DMA3), + DEFINE_RES_IRQ(IRQ_DMA4), + DEFINE_RES_IRQ(IRQ_DMA5), +}; + +static u64 sa11x0dma_dma_mask = DMA_BIT_MASK(32); + +static struct platform_device sa11x0dma_device = { + .name = "sa11x0-dma", + .id = -1, + .dev = { + .dma_mask = &sa11x0dma_dma_mask, + .coherent_dma_mask = 0xffffffff, + }, + .num_resources = ARRAY_SIZE(sa11x0dma_resources), + .resource = sa11x0dma_resources, }; static struct platform_device *sa11x0_devices[] __initdata = { &sa11x0udc_device, &sa11x0uart1_device, &sa11x0uart3_device, - &sa11x0mcp_device, &sa11x0ssp_device, &sa11x0pcmcia_device, - &sa11x0fb_device, - &sa11x0mtd_device, &sa11x0rtc_device, + &sa11x0dma_device, }; static int __init sa1100_init(void) { pm_power_off = sa1100_power_off; - - if (sa11x0ir_device.dev.platform_data) - platform_device_register(&sa11x0ir_device); - return platform_add_devices(sa11x0_devices, ARRAY_SIZE(sa11x0_devices)); } arch_initcall(sa1100_init); -void (*sa1100fb_backlight_power)(int on); -void (*sa1100fb_lcd_power)(int on); - -EXPORT_SYMBOL(sa1100fb_backlight_power); -EXPORT_SYMBOL(sa1100fb_lcd_power); - +void __init sa11x0_init_late(void) +{ + sa11x0_pm_init(); +} /* * Common I/O mapping: @@ -417,7 +341,7 @@ EXPORT_SYMBOL(sa1100fb_lcd_power); */ static struct map_desc standard_io_desc[] __initdata = { - { /* PCM */ + { /* PCM */ .virtual = 0xf8000000, .pfn = __phys_to_pfn(0x80000000), .length = 0x00100000, @@ -451,7 +375,7 @@ void __init sa1100_map_io(void) * the MBGNT signal false to ensure the SA1111 doesn't own the * SDRAM bus. */ -void __init sa1110_mb_disable(void) +void sa1110_mb_disable(void) { unsigned long flags; @@ -470,7 +394,7 @@ void __init sa1110_mb_disable(void) * If the system is going to use the SA-1111 DMA engines, set up * the memory bus request/grant pins. */ -void __devinit sa1110_mb_enable(void) +void sa1110_mb_enable(void) { unsigned long flags; |