#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 <linux/sched.h>
-#include <asm/cnt32_to_63.h>
-#include <asm/div64.h>
-
-#include <asm/hardware.h>
-#include <asm/irq.h>
+#include <mach/hardware.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/mach/map.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/pxa-regs.h>
+#include <mach/reset.h>
#include "generic.h"
-/*
- * This is the PXA2xx sched_clock implementation. This has a resolution
- * of at least 308ns and a maximum value that depends on the value of
- * CLOCK_TICK_RATE.
- *
- * 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.
- */
-unsigned long long sched_clock(void)
+void clear_reset_status(unsigned int mask)
{
- unsigned long long v = cnt32_to_63(OSCR);
- /* Note: top bit ov v needs cleared unless multiplier is even. */
-
-#if CLOCK_TICK_RATE == 3686400
- /* 1E9 / 3686400 => 78125 / 288, max value = 32025597s (370 days). */
- /* The <<1 is used to get rid of tick.hi top bit */
- v *= 78125<<1;
- do_div(v, 288<<1);
-#elif CLOCK_TICK_RATE == 3250000
- /* 1E9 / 3250000 => 4000 / 13, max value = 709490156s (8211 days) */
- v *= 4000;
- do_div(v, 13);
-#elif CLOCK_TICK_RATE == 3249600
- /* 1E9 / 3249600 => 625000 / 2031, max value = 4541295s (52 days) */
- v *= 625000;
- do_div(v, 2031);
-#else
-#warning "consider fixing sched_clock for your value of CLOCK_TICK_RATE"
- /*
- * 96-bit math to perform tick * NSEC_PER_SEC / CLOCK_TICK_RATE for
- * any value of CLOCK_TICK_RATE. Max value is in the 80 thousand
- * years range and truncation to unsigned long long limits it to
- * sched_clock's max range of ~584 years. This is nice but with
- * higher computation cost.
- */
- {
- union {
- unsigned long long val;
- struct { unsigned long lo, hi; };
- } x;
- unsigned long long y;
+ if (cpu_is_pxa2xx())
+ pxa2xx_clear_reset_status(mask);
- x.val = v;
- x.hi &= 0x7fffffff;
- y = (unsigned long long)x.lo * NSEC_PER_SEC;
- x.lo = y;
- y = (y >> 32) + (unsigned long long)x.hi * NSEC_PER_SEC;
- x.hi = do_div(y, CLOCK_TICK_RATE);
- do_div(x.val, CLOCK_TICK_RATE);
- x.hi += y;
- v = x.val;
- }
-#endif
-
- return v;
+ if (cpu_is_pxa3xx())
+ pxa3xx_clear_reset_status(mask);
}
/*
- * Handy function to set GPIO alternate functions
+ * 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_gpio_mode(int gpio_mode)
+unsigned int get_clk_frequency_khz(int info)
{
- unsigned long flags;
- int gpio = gpio_mode & GPIO_MD_MASK_NR;
- int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
- int gafr;
-
- 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_pxa21x() || cpu_is_pxa25x())
+ return pxa25x_get_clk_frequency_khz(info);
+ else if (cpu_is_pxa27x())
+ return pxa27x_get_clk_frequency_khz(info);
else
- GPDR(gpio) &= ~GPIO_bit(gpio);
- gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
- GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2));
- local_irq_restore(flags);
+ return pxa3xx_get_clk_frequency_khz(info);
}
-
-EXPORT_SYMBOL(pxa_gpio_mode);
+EXPORT_SYMBOL(get_clk_frequency_khz);
/*
- * Routine to safely enable or disable a clock in the CKEN
+ * Return the current memory clock frequency in units of 10kHz
*/
-void pxa_set_cken(int clock, int enable)
+unsigned int get_memclk_frequency_10khz(void)
{
- unsigned long flags;
- local_irq_save(flags);
-
- if (enable)
- CKEN |= clock;
+ 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
- CKEN &= ~clock;
-
- local_irq_restore(flags);
+ return pxa3xx_get_memclk_frequency_10khz();
}
-
-EXPORT_SYMBOL(pxa_set_cken);
+EXPORT_SYMBOL(get_memclk_frequency_10khz);
/*
* Intel PXA2xx internal register mapping.
.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,
+ .length = 0x00200000,
.type = MT_DEVICE
}, { /* USB host */
.virtual = 0xf8000000,
iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
get_clk_frequency_khz(1);
}
-
-
-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 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 = {
- .dma_mask = &fb_dma_mask,
- .coherent_dma_mask = 0xffffffff,
- },
- .num_resources = ARRAY_SIZE(pxafb_resources),
- .resource = pxafb_resources,
-};
-
-void __init set_pxa_fb_info(struct pxafb_mach_info *info)
-{
- pxafb_device.dev.platform_data = info;
-}
-
-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),
-};
-
-#ifdef CONFIG_PXA27x
-static struct resource i2c_power_resources[] = {
- {
- .start = 0x40f00180,
- .end = 0x40f001a3,
- .flags = IORESOURCE_MEM,
- }, {
- .start = IRQ_PWRI2C,
- .end = IRQ_PWRI2C,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct platform_device i2c_power_device = {
- .name = "pxa2xx-i2c",
- .id = 1,
- .resource = i2c_power_resources,
- .num_resources = ARRAY_SIZE(i2c_resources),
-};
-#endif
-
-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 pxartc_device = {
- .name = "sa1100-rtc",
- .id = -1,
-};
-
-static struct platform_device *devices[] __initdata = {
- &pxamci_device,
- &udc_device,
- &pxafb_device,
- &ffuart_device,
- &btuart_device,
- &stuart_device,
- &pxaficp_device,
- &i2c_device,
-#ifdef CONFIG_PXA27x
- &i2c_power_device,
-#endif
- &i2s_device,
- &pxartc_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);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff