Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
new file mode 100644
index 0000000..95ae217
--- /dev/null
+++ b/arch/arm/mach-sa1100/generic.c
@@ -0,0 +1,419 @@
+/*
+ * linux/arch/arm/mach-sa1100/generic.c
+ *
+ * Author: Nicolas Pitre
+ *
+ * Code common to all SA11x0 machines.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/cpufreq.h>
+#include <linux/ioport.h>
+
+#include <asm/div64.h>
+#include <asm/hardware.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/mach/map.h>
+#include <asm/irq.h>
+
+#include "generic.h"
+
+#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 */
+};
+
+#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;
+}
+EXPORT_SYMBOL(cpufreq_get);
+#endif
+
+/*
+ * This is the SA11x0 sched_clock implementation. This has
+ * a resolution of 271ns, and a maximum value of 1165s.
+ * ( * 1E9 / 3686400 => * 78125 / 288)
+ */
+unsigned long long sched_clock(void)
+{
+ unsigned long long v;
+
+ v = (unsigned long long)OSCR * 78125;
+ do_div(v, 288);
+
+ return v;
+}
+
+/*
+ * Default power-off for SA1100
+ */
+static void sa1100_power_off(void)
+{
+ mdelay(100);
+ local_irq_disable();
+ /* disable internal oscillator, float CS lines */
+ PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
+ /* enable wake-up on GPIO0 (Assabet...) */
+ PWER = GFER = GRER = 1;
+ /*
+ * set scratchpad to zero, just in case it is used as a
+ * restart address by the bootloader.
+ */
+ PSPR = 0;
+ /* enter sleep mode */
+ PMCR = PMCR_SF;
+}
+
+static struct resource sa11x0udc_resources[] = {
+ [0] = {
+ .start = 0x80000000,
+ .end = 0x8000ffff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static u64 sa11x0udc_dma_mask = 0xffffffffUL;
+
+static struct platform_device sa11x0udc_device = {
+ .name = "sa11x0-udc",
+ .id = -1,
+ .dev = {
+ .dma_mask = &sa11x0udc_dma_mask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(sa11x0udc_resources),
+ .resource = sa11x0udc_resources,
+};
+
+static struct resource sa11x0uart1_resources[] = {
+ [0] = {
+ .start = 0x80010000,
+ .end = 0x8001ffff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device sa11x0uart1_device = {
+ .name = "sa11x0-uart",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(sa11x0uart1_resources),
+ .resource = sa11x0uart1_resources,
+};
+
+static struct resource sa11x0uart3_resources[] = {
+ [0] = {
+ .start = 0x80050000,
+ .end = 0x8005ffff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device sa11x0uart3_device = {
+ .name = "sa11x0-uart",
+ .id = 3,
+ .num_resources = ARRAY_SIZE(sa11x0uart3_resources),
+ .resource = sa11x0uart3_resources,
+};
+
+static struct resource sa11x0mcp_resources[] = {
+ [0] = {
+ .start = 0x80060000,
+ .end = 0x8006ffff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static u64 sa11x0mcp_dma_mask = 0xffffffffUL;
+
+static struct platform_device sa11x0mcp_device = {
+ .name = "sa11x0-mcp",
+ .id = -1,
+ .dev = {
+ .dma_mask = &sa11x0mcp_dma_mask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(sa11x0mcp_resources),
+ .resource = sa11x0mcp_resources,
+};
+
+static struct resource sa11x0ssp_resources[] = {
+ [0] = {
+ .start = 0x80070000,
+ .end = 0x8007ffff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static u64 sa11x0ssp_dma_mask = 0xffffffffUL;
+
+static struct platform_device sa11x0ssp_device = {
+ .name = "sa11x0-ssp",
+ .id = -1,
+ .dev = {
+ .dma_mask = &sa11x0ssp_dma_mask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(sa11x0ssp_resources),
+ .resource = sa11x0ssp_resources,
+};
+
+static struct resource sa11x0fb_resources[] = {
+ [0] = {
+ .start = 0xb0100000,
+ .end = 0xb010ffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_LCD,
+ .end = IRQ_LCD,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device sa11x0fb_device = {
+ .name = "sa11x0-fb",
+ .id = -1,
+ .dev = {
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(sa11x0fb_resources),
+ .resource = sa11x0fb_resources,
+};
+
+static struct platform_device sa11x0pcmcia_device = {
+ .name = "sa11x0-pcmcia",
+ .id = -1,
+};
+
+static struct platform_device sa11x0mtd_device = {
+ .name = "flash",
+ .id = -1,
+};
+
+void sa11x0_set_flash_data(struct flash_platform_data *flash,
+ struct resource *res, int nr)
+{
+ sa11x0mtd_device.dev.platform_data = flash;
+ sa11x0mtd_device.resource = res;
+ sa11x0mtd_device.num_resources = nr;
+}
+
+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,
+ }
+};
+
+static struct platform_device sa11x0ir_device = {
+ .name = "sa11x0-ir",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(sa11x0ir_resources),
+ .resource = sa11x0ir_resources,
+};
+
+void sa11x0_set_irda_data(struct irda_platform_data *irda)
+{
+ sa11x0ir_device.dev.platform_data = irda;
+}
+
+static struct platform_device *sa11x0_devices[] __initdata = {
+ &sa11x0udc_device,
+ &sa11x0uart1_device,
+ &sa11x0uart3_device,
+ &sa11x0mcp_device,
+ &sa11x0ssp_device,
+ &sa11x0pcmcia_device,
+ &sa11x0fb_device,
+ &sa11x0mtd_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);
+
+
+/*
+ * Common I/O mapping:
+ *
+ * Typically, static virtual address mappings are as follow:
+ *
+ * 0xf0000000-0xf3ffffff: miscellaneous stuff (CPLDs, etc.)
+ * 0xf4000000-0xf4ffffff: SA-1111
+ * 0xf5000000-0xf5ffffff: reserved (used by cache flushing area)
+ * 0xf6000000-0xfffeffff: reserved (internal SA1100 IO defined above)
+ * 0xffff0000-0xffff0fff: SA1100 exception vectors
+ * 0xffff2000-0xffff2fff: Minicache copy_user_page area
+ *
+ * Below 0xe8000000 is reserved for vm allocation.
+ *
+ * The machine specific code must provide the extra mapping beside the
+ * default mapping provided here.
+ */
+
+static struct map_desc standard_io_desc[] __initdata = {
+ /* virtual physical length type */
+ { 0xf8000000, 0x80000000, 0x00100000, MT_DEVICE }, /* PCM */
+ { 0xfa000000, 0x90000000, 0x00100000, MT_DEVICE }, /* SCM */
+ { 0xfc000000, 0xa0000000, 0x00100000, MT_DEVICE }, /* MER */
+ { 0xfe000000, 0xb0000000, 0x00200000, MT_DEVICE } /* LCD + DMA */
+};
+
+void __init sa1100_map_io(void)
+{
+ iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
+}
+
+/*
+ * Disable the memory bus request/grant signals on the SA1110 to
+ * ensure that we don't receive spurious memory requests. We set
+ * the MBGNT signal false to ensure the SA1111 doesn't own the
+ * SDRAM bus.
+ */
+void __init sa1110_mb_disable(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ PGSR &= ~GPIO_MBGNT;
+ GPCR = GPIO_MBGNT;
+ GPDR = (GPDR & ~GPIO_MBREQ) | GPIO_MBGNT;
+
+ GAFR &= ~(GPIO_MBGNT | GPIO_MBREQ);
+
+ local_irq_restore(flags);
+}
+
+/*
+ * If the system is going to use the SA-1111 DMA engines, set up
+ * the memory bus request/grant pins.
+ */
+void __init sa1110_mb_enable(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ PGSR &= ~GPIO_MBGNT;
+ GPCR = GPIO_MBGNT;
+ GPDR = (GPDR & ~GPIO_MBREQ) | GPIO_MBGNT;
+
+ GAFR |= (GPIO_MBGNT | GPIO_MBREQ);
+ TUCR |= TUCR_MR;
+
+ local_irq_restore(flags);
+}
+