![Jörn Engel](/assets/img/avatar_default.png)
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
238 lines
4.7 KiB
C
238 lines
4.7 KiB
C
/*
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* linux/arch/arm/mach-sa1100/simpad.c
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/tty.h>
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#include <linux/proc_fs.h>
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#include <linux/string.h>
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#include <linux/pm.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <asm/irq.h>
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#include <asm/hardware.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <asm/mach/map.h>
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#include <asm/mach/serial_sa1100.h>
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#include <asm/arch/mcp.h>
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#include <asm/arch/simpad.h>
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#include <linux/serial_core.h>
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#include <linux/ioport.h>
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#include <asm/io.h>
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#include "generic.h"
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long cs3_shadow;
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long get_cs3_shadow(void)
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{
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return cs3_shadow;
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}
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void set_cs3(long value)
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{
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*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow = value;
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}
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void set_cs3_bit(int value)
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{
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cs3_shadow |= value;
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*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
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}
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void clear_cs3_bit(int value)
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{
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cs3_shadow &= ~value;
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*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
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}
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EXPORT_SYMBOL(set_cs3_bit);
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EXPORT_SYMBOL(clear_cs3_bit);
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static struct map_desc simpad_io_desc[] __initdata = {
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{ /* MQ200 */
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.virtual = 0xf2800000,
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.pfn = __phys_to_pfn(0x4b800000),
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.length = 0x00800000,
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.type = MT_DEVICE
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}, { /* Paules CS3, write only */
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.virtual = 0xf1000000,
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.pfn = __phys_to_pfn(0x18000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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},
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};
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static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
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{
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if (port->mapbase == (u_int)&Ser1UTCR0) {
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if (state)
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{
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clear_cs3_bit(RS232_ON);
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clear_cs3_bit(DECT_POWER_ON);
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}else
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{
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set_cs3_bit(RS232_ON);
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set_cs3_bit(DECT_POWER_ON);
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}
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}
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}
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static struct sa1100_port_fns simpad_port_fns __initdata = {
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.pm = simpad_uart_pm,
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};
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static struct mtd_partition simpad_partitions[] = {
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{
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.name = "SIMpad boot firmware",
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.size = 0x00080000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "SIMpad kernel",
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.size = 0x0010000,
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.offset = MTDPART_OFS_APPEND,
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}, {
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.name = "SIMpad root jffs2",
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.size = MTDPART_SIZ_FULL,
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.offset = MTDPART_OFS_APPEND,
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}
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};
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static struct flash_platform_data simpad_flash_data = {
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.map_name = "cfi_probe",
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.parts = simpad_partitions,
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.nr_parts = ARRAY_SIZE(simpad_partitions),
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};
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static struct resource simpad_flash_resources [] = {
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{
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.start = SA1100_CS0_PHYS,
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.end = SA1100_CS0_PHYS + SZ_16M -1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = SA1100_CS1_PHYS,
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.end = SA1100_CS1_PHYS + SZ_16M -1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct mcp_plat_data simpad_mcp_data = {
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.mccr0 = MCCR0_ADM,
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.sclk_rate = 11981000,
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};
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static void __init simpad_map_io(void)
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{
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sa1100_map_io();
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iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
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set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON |
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ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
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sa1100_register_uart_fns(&simpad_port_fns);
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sa1100_register_uart(0, 3); /* serial interface */
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sa1100_register_uart(1, 1); /* DECT */
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// Reassign UART 1 pins
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GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
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GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
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GPDR &= ~GPIO_UART_RXD;
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PPAR |= PPAR_UPR;
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/*
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* Set up registers for sleep mode.
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*/
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PWER = PWER_GPIO0| PWER_RTC;
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PGSR = 0x818;
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PCFR = 0;
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PSDR = 0;
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sa11x0_set_flash_data(&simpad_flash_data, simpad_flash_resources,
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ARRAY_SIZE(simpad_flash_resources));
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sa11x0_set_mcp_data(&simpad_mcp_data);
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}
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static void simpad_power_off(void)
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{
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local_irq_disable(); // was cli
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set_cs3(0x800); /* only SD_MEDIAQ */
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/* disable internal oscillator, float CS lines */
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PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
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/* enable wake-up on GPIO0 (Assabet...) */
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PWER = GFER = GRER = 1;
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/*
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* set scratchpad to zero, just in case it is used as a
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* restart address by the bootloader.
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*/
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PSPR = 0;
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PGSR = 0;
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/* enter sleep mode */
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PMCR = PMCR_SF;
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while(1);
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local_irq_enable(); /* we won't ever call it */
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}
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/*
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* MediaQ Video Device
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*/
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static struct platform_device simpad_mq200fb = {
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.name = "simpad-mq200",
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.id = 0,
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};
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static struct platform_device *devices[] __initdata = {
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&simpad_mq200fb
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};
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static int __init simpad_init(void)
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{
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int ret;
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pm_power_off = simpad_power_off;
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ret = platform_add_devices(devices, ARRAY_SIZE(devices));
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if(ret)
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printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
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return 0;
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}
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arch_initcall(simpad_init);
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MACHINE_START(SIMPAD, "Simpad")
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/* Maintainer: Holger Freyther */
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.phys_io = 0x80000000,
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.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
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.boot_params = 0xc0000100,
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.map_io = simpad_map_io,
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.init_irq = sa1100_init_irq,
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.timer = &sa1100_timer,
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MACHINE_END
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