--- /dev/null
+/*
+ * 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/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/platform_device.h>
+#include <linux/reboot.h>
+
+#include <video/sa1100fb.h>
+
+#include <asm/div64.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+#include <asm/irq.h>
+#include <asm/system_misc.h>
+
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+
+#include "generic.h"
+#include <clocksource/pxa.h>
+
+unsigned int reset_status;
+EXPORT_SYMBOL(reset_status);
+
+#define NR_FREQS 16
+
+/*
+ * This table is setup for a 3.6864MHz Crystal.
+ */
+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, },
+};
+
+unsigned int sa11x0_getspeed(unsigned int cpu)
+{
+ if (cpu)
+ return 0;
+ return sa11x0_freq_table[PPCR & 0xf].frequency;
+}
+
+/*
+ * 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;
+}
+
+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] = DEFINE_RES_MEM(__PREG(Ser0UDCCR), SZ_64K),
+ [1] = DEFINE_RES_IRQ(IRQ_Ser0UDC),
+};
+
+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] = DEFINE_RES_MEM(__PREG(Ser1UTCR0), SZ_64K),
+ [1] = DEFINE_RES_IRQ(IRQ_Ser1UART),
+};
+
+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] = DEFINE_RES_MEM(__PREG(Ser3UTCR0), SZ_64K),
+ [1] = DEFINE_RES_IRQ(IRQ_Ser3UART),
+};
+
+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] = 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;
+
+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,
+};
+
+void __init sa11x0_ppc_configure_mcp(void)
+{
+ /* 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] = DEFINE_RES_MEM(0x80070000, SZ_64K),
+ [1] = DEFINE_RES_IRQ(IRQ_Ser4SSP),
+};
+
+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] = DEFINE_RES_MEM(0xb0100000, SZ_64K),
+ [1] = DEFINE_RES_IRQ(IRQ_LCD),
+};
+
+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,
+};
+
+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 = "sa1100-mtd",
+ .id = -1,
+};
+
+void sa11x0_register_mtd(struct flash_platform_data *flash,
+ struct resource *res, int nr)
+{
+ flash->name = "sa1100";
+ sa11x0mtd_device.resource = res;
+ sa11x0mtd_device.num_resources = nr;
+ sa11x0_register_device(&sa11x0mtd_device, flash);
+}
+
+static struct resource sa11x0ir_resources[] = {
+ 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 = {
+ .name = "sa11x0-ir",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(sa11x0ir_resources),
+ .resource = sa11x0ir_resources,
+};
+
+void sa11x0_register_irda(struct irda_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,
+ &sa11x0ssp_device,
+ &sa11x0pcmcia_device,
+ &sa11x0rtc_device,
+ &sa11x0dma_device,
+};
+
+static int __init sa1100_init(void)
+{
+ pm_power_off = sa1100_power_off;
+ return platform_add_devices(sa11x0_devices, ARRAY_SIZE(sa11x0_devices));
+}
+
+arch_initcall(sa1100_init);
+
+void __init sa11x0_init_late(void)
+{
+ sa11x0_pm_init();
+}
+
+/*
+ * 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 = {
+ { /* PCM */
+ .virtual = 0xf8000000,
+ .pfn = __phys_to_pfn(0x80000000),
+ .length = 0x00100000,
+ .type = MT_DEVICE
+ }, { /* SCM */
+ .virtual = 0xfa000000,
+ .pfn = __phys_to_pfn(0x90000000),
+ .length = 0x00100000,
+ .type = MT_DEVICE
+ }, { /* MER */
+ .virtual = 0xfc000000,
+ .pfn = __phys_to_pfn(0xa0000000),
+ .length = 0x00100000,
+ .type = MT_DEVICE
+ }, { /* LCD + DMA */
+ .virtual = 0xfe000000,
+ .pfn = __phys_to_pfn(0xb0000000),
+ .length = 0x00200000,
+ .type = MT_DEVICE
+ },
+};
+
+void __init sa1100_map_io(void)
+{
+ iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
+}
+
+void __init sa1100_timer_init(void)
+{
+ pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x90000000), 3686400);
+}
+
+/*
+ * 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 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 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);
+}
+
Code Review / kvmfornfv.git / blobdiff