mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-03 04:26:54 +07:00
7fea1ba58e
Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
402 lines
8.4 KiB
C
402 lines
8.4 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/mfd/ucb1x00.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <mach/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 <mach/mcp.h>
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#include <mach/simpad.h>
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#include <mach/irqs.h>
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#include <linux/serial_core.h>
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#include <linux/ioport.h>
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#include <linux/input.h>
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#include <linux/gpio_keys.h>
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#include <linux/leds.h>
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#include <linux/i2c-gpio.h>
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#include "generic.h"
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/*
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* CS3 support
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*/
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static long cs3_shadow;
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static spinlock_t cs3_lock;
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static struct gpio_chip cs3_gpio;
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long simpad_get_cs3_ro(void)
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{
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return readl(CS3_BASE);
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}
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EXPORT_SYMBOL(simpad_get_cs3_ro);
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long simpad_get_cs3_shadow(void)
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{
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return cs3_shadow;
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}
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EXPORT_SYMBOL(simpad_get_cs3_shadow);
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static void __simpad_write_cs3(void)
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{
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writel(cs3_shadow, CS3_BASE);
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}
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void simpad_set_cs3_bit(int value)
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{
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unsigned long flags;
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spin_lock_irqsave(&cs3_lock, flags);
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cs3_shadow |= value;
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__simpad_write_cs3();
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spin_unlock_irqrestore(&cs3_lock, flags);
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}
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EXPORT_SYMBOL(simpad_set_cs3_bit);
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void simpad_clear_cs3_bit(int value)
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{
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unsigned long flags;
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spin_lock_irqsave(&cs3_lock, flags);
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cs3_shadow &= ~value;
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__simpad_write_cs3();
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spin_unlock_irqrestore(&cs3_lock, flags);
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}
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EXPORT_SYMBOL(simpad_clear_cs3_bit);
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static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
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{
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if (offset > 15)
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return;
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if (value)
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simpad_set_cs3_bit(1 << offset);
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else
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simpad_clear_cs3_bit(1 << offset);
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};
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static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
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{
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if (offset > 15)
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return simpad_get_cs3_ro() & (1 << (offset - 16));
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return simpad_get_cs3_shadow() & (1 << offset);
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};
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static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
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{
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if (offset > 15)
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return 0;
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return -EINVAL;
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};
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static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
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int value)
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{
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if (offset > 15)
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return -EINVAL;
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cs3_gpio_set(chip, offset, value);
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return 0;
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};
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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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}, { /* Simpad CS3 */
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.virtual = CS3_BASE,
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.pfn = __phys_to_pfn(SA1100_CS3_PHYS),
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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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simpad_clear_cs3_bit(RS232_ON);
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simpad_clear_cs3_bit(DECT_POWER_ON);
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}else
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{
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simpad_set_cs3_bit(RS232_ON);
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simpad_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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DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M),
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DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
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};
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static struct ucb1x00_plat_data simpad_ucb1x00_data = {
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.gpio_base = SIMPAD_UCB1X00_GPIO_BASE,
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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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.codec_pdata = &simpad_ucb1x00_data,
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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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/* Initialize CS3 */
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cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON |
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RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
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__simpad_write_cs3(); /* Spinlocks not yet initialized */
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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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}
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static void simpad_power_off(void)
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{
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local_irq_disable();
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cs3_shadow = SD_MEDIAQ;
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__simpad_write_cs3(); /* Bypass spinlock here */
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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 */
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PWER = GFER = GRER = PWER_GPIO0;
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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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* gpio_keys
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*/
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static struct gpio_keys_button simpad_button_table[] = {
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{ KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
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};
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static struct gpio_keys_platform_data simpad_keys_data = {
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.buttons = simpad_button_table,
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.nbuttons = ARRAY_SIZE(simpad_button_table),
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};
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static struct platform_device simpad_keys = {
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.name = "gpio-keys",
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.dev = {
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.platform_data = &simpad_keys_data,
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},
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};
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static struct gpio_keys_button simpad_polled_button_table[] = {
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{ KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
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{ KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
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{ KEY_UP, SIMPAD_UCB1X00_GPIO_UP, 1, "up button" },
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{ KEY_DOWN, SIMPAD_UCB1X00_GPIO_DOWN, 1, "down button" },
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{ KEY_LEFT, SIMPAD_UCB1X00_GPIO_LEFT, 1, "left button" },
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{ KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
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};
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static struct gpio_keys_platform_data simpad_polled_keys_data = {
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.buttons = simpad_polled_button_table,
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.nbuttons = ARRAY_SIZE(simpad_polled_button_table),
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.poll_interval = 50,
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};
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static struct platform_device simpad_polled_keys = {
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.name = "gpio-keys-polled",
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.dev = {
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.platform_data = &simpad_polled_keys_data,
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},
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};
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/*
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* GPIO LEDs
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*/
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static struct gpio_led simpad_leds[] = {
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{
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.name = "simpad:power",
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.gpio = SIMPAD_CS3_LED2_ON,
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.active_low = 0,
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.default_trigger = "default-on",
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},
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};
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static struct gpio_led_platform_data simpad_led_data = {
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.num_leds = ARRAY_SIZE(simpad_leds),
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.leds = simpad_leds,
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};
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static struct platform_device simpad_gpio_leds = {
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.name = "leds-gpio",
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.id = 0,
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.dev = {
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.platform_data = &simpad_led_data,
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},
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};
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/*
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* i2c
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*/
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static struct i2c_gpio_platform_data simpad_i2c_data = {
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.sda_pin = GPIO_GPIO21,
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.scl_pin = GPIO_GPIO25,
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.udelay = 10,
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.timeout = HZ,
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};
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static struct platform_device simpad_i2c = {
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.name = "i2c-gpio",
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.id = 0,
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.dev = {
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.platform_data = &simpad_i2c_data,
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},
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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_keys,
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&simpad_polled_keys,
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&simpad_mq200fb,
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&simpad_gpio_leds,
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&simpad_i2c,
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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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spin_lock_init(&cs3_lock);
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cs3_gpio.label = "simpad_cs3";
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cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
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cs3_gpio.ngpio = 24;
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cs3_gpio.set = cs3_gpio_set;
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cs3_gpio.get = cs3_gpio_get;
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cs3_gpio.direction_input = cs3_gpio_direction_input;
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cs3_gpio.direction_output = cs3_gpio_direction_output;
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ret = gpiochip_add(&cs3_gpio);
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if (ret)
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printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");
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pm_power_off = simpad_power_off;
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sa11x0_ppc_configure_mcp();
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sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
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ARRAY_SIZE(simpad_flash_resources));
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sa11x0_register_mcp(&simpad_mcp_data);
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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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.atag_offset = 0x100,
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.map_io = simpad_map_io,
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.nr_irqs = SA1100_NR_IRQS,
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.init_irq = sa1100_init_irq,
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.init_late = sa11x0_init_late,
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.timer = &sa1100_timer,
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.restart = sa11x0_restart,
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MACHINE_END
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