| /* |
| * linux/arch/arm/mach-sa1100/simpad.c |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/tty.h> |
| #include <linux/proc_fs.h> |
| #include <linux/string.h> |
| #include <linux/pm.h> |
| #include <linux/platform_device.h> |
| #include <linux/mfd/ucb1x00.h> |
| #include <linux/mtd/mtd.h> |
| #include <linux/mtd/partitions.h> |
| #include <linux/io.h> |
| #include <linux/gpio.h> |
| |
| #include <mach/hardware.h> |
| #include <asm/setup.h> |
| |
| #include <asm/mach-types.h> |
| #include <asm/mach/arch.h> |
| #include <asm/mach/flash.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/serial_sa1100.h> |
| #include <linux/platform_data/mfd-mcp-sa11x0.h> |
| #include <mach/simpad.h> |
| #include <mach/irqs.h> |
| |
| #include <linux/serial_core.h> |
| #include <linux/ioport.h> |
| #include <linux/input.h> |
| #include <linux/gpio_keys.h> |
| #include <linux/leds.h> |
| #include <linux/i2c-gpio.h> |
| |
| #include "generic.h" |
| |
| /* |
| * CS3 support |
| */ |
| |
| static long cs3_shadow; |
| static spinlock_t cs3_lock; |
| static struct gpio_chip cs3_gpio; |
| |
| long simpad_get_cs3_ro(void) |
| { |
| return readl(CS3_BASE); |
| } |
| EXPORT_SYMBOL(simpad_get_cs3_ro); |
| |
| long simpad_get_cs3_shadow(void) |
| { |
| return cs3_shadow; |
| } |
| EXPORT_SYMBOL(simpad_get_cs3_shadow); |
| |
| static void __simpad_write_cs3(void) |
| { |
| writel(cs3_shadow, CS3_BASE); |
| } |
| |
| void simpad_set_cs3_bit(int value) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&cs3_lock, flags); |
| cs3_shadow |= value; |
| __simpad_write_cs3(); |
| spin_unlock_irqrestore(&cs3_lock, flags); |
| } |
| EXPORT_SYMBOL(simpad_set_cs3_bit); |
| |
| void simpad_clear_cs3_bit(int value) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&cs3_lock, flags); |
| cs3_shadow &= ~value; |
| __simpad_write_cs3(); |
| spin_unlock_irqrestore(&cs3_lock, flags); |
| } |
| EXPORT_SYMBOL(simpad_clear_cs3_bit); |
| |
| static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value) |
| { |
| if (offset > 15) |
| return; |
| if (value) |
| simpad_set_cs3_bit(1 << offset); |
| else |
| simpad_clear_cs3_bit(1 << offset); |
| }; |
| |
| static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset) |
| { |
| if (offset > 15) |
| return simpad_get_cs3_ro() & (1 << (offset - 16)); |
| return simpad_get_cs3_shadow() & (1 << offset); |
| }; |
| |
| static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset) |
| { |
| if (offset > 15) |
| return 0; |
| return -EINVAL; |
| }; |
| |
| static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset, |
| int value) |
| { |
| if (offset > 15) |
| return -EINVAL; |
| cs3_gpio_set(chip, offset, value); |
| return 0; |
| }; |
| |
| static struct map_desc simpad_io_desc[] __initdata = { |
| { /* MQ200 */ |
| .virtual = 0xf2800000, |
| .pfn = __phys_to_pfn(0x4b800000), |
| .length = 0x00800000, |
| .type = MT_DEVICE |
| }, { /* Simpad CS3 */ |
| .virtual = CS3_BASE, |
| .pfn = __phys_to_pfn(SA1100_CS3_PHYS), |
| .length = 0x00100000, |
| .type = MT_DEVICE |
| }, |
| }; |
| |
| |
| static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate) |
| { |
| if (port->mapbase == (u_int)&Ser1UTCR0) { |
| if (state) |
| { |
| simpad_clear_cs3_bit(RS232_ON); |
| simpad_clear_cs3_bit(DECT_POWER_ON); |
| }else |
| { |
| simpad_set_cs3_bit(RS232_ON); |
| simpad_set_cs3_bit(DECT_POWER_ON); |
| } |
| } |
| } |
| |
| static struct sa1100_port_fns simpad_port_fns __initdata = { |
| .pm = simpad_uart_pm, |
| }; |
| |
| |
| static struct mtd_partition simpad_partitions[] = { |
| { |
| .name = "SIMpad boot firmware", |
| .size = 0x00080000, |
| .offset = 0, |
| .mask_flags = MTD_WRITEABLE, |
| }, { |
| .name = "SIMpad kernel", |
| .size = 0x0010000, |
| .offset = MTDPART_OFS_APPEND, |
| }, { |
| .name = "SIMpad root jffs2", |
| .size = MTDPART_SIZ_FULL, |
| .offset = MTDPART_OFS_APPEND, |
| } |
| }; |
| |
| static struct flash_platform_data simpad_flash_data = { |
| .map_name = "cfi_probe", |
| .parts = simpad_partitions, |
| .nr_parts = ARRAY_SIZE(simpad_partitions), |
| }; |
| |
| |
| static struct resource simpad_flash_resources [] = { |
| DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M), |
| DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M), |
| }; |
| |
| static struct ucb1x00_plat_data simpad_ucb1x00_data = { |
| .gpio_base = SIMPAD_UCB1X00_GPIO_BASE, |
| }; |
| |
| static struct mcp_plat_data simpad_mcp_data = { |
| .mccr0 = MCCR0_ADM, |
| .sclk_rate = 11981000, |
| .codec_pdata = &simpad_ucb1x00_data, |
| }; |
| |
| |
| |
| static void __init simpad_map_io(void) |
| { |
| sa1100_map_io(); |
| |
| iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc)); |
| |
| /* Initialize CS3 */ |
| cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON | |
| RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON); |
| __simpad_write_cs3(); /* Spinlocks not yet initialized */ |
| |
| sa1100_register_uart_fns(&simpad_port_fns); |
| sa1100_register_uart(0, 3); /* serial interface */ |
| sa1100_register_uart(1, 1); /* DECT */ |
| |
| // Reassign UART 1 pins |
| GAFR |= GPIO_UART_TXD | GPIO_UART_RXD; |
| GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15; |
| GPDR &= ~GPIO_UART_RXD; |
| PPAR |= PPAR_UPR; |
| |
| /* |
| * Set up registers for sleep mode. |
| */ |
| |
| |
| PWER = PWER_GPIO0| PWER_RTC; |
| PGSR = 0x818; |
| PCFR = 0; |
| PSDR = 0; |
| |
| } |
| |
| static void simpad_power_off(void) |
| { |
| local_irq_disable(); |
| cs3_shadow = SD_MEDIAQ; |
| __simpad_write_cs3(); /* Bypass spinlock here */ |
| |
| /* disable internal oscillator, float CS lines */ |
| PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS); |
| /* enable wake-up on GPIO0 */ |
| PWER = GFER = GRER = PWER_GPIO0; |
| /* |
| * set scratchpad to zero, just in case it is used as a |
| * restart address by the bootloader. |
| */ |
| PSPR = 0; |
| PGSR = 0; |
| /* enter sleep mode */ |
| PMCR = PMCR_SF; |
| while(1); |
| |
| local_irq_enable(); /* we won't ever call it */ |
| |
| |
| } |
| |
| /* |
| * gpio_keys |
| */ |
| |
| static struct gpio_keys_button simpad_button_table[] = { |
| { KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" }, |
| }; |
| |
| static struct gpio_keys_platform_data simpad_keys_data = { |
| .buttons = simpad_button_table, |
| .nbuttons = ARRAY_SIZE(simpad_button_table), |
| }; |
| |
| static struct platform_device simpad_keys = { |
| .name = "gpio-keys", |
| .dev = { |
| .platform_data = &simpad_keys_data, |
| }, |
| }; |
| |
| static struct gpio_keys_button simpad_polled_button_table[] = { |
| { KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" }, |
| { KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" }, |
| { KEY_UP, SIMPAD_UCB1X00_GPIO_UP, 1, "up button" }, |
| { KEY_DOWN, SIMPAD_UCB1X00_GPIO_DOWN, 1, "down button" }, |
| { KEY_LEFT, SIMPAD_UCB1X00_GPIO_LEFT, 1, "left button" }, |
| { KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" }, |
| }; |
| |
| static struct gpio_keys_platform_data simpad_polled_keys_data = { |
| .buttons = simpad_polled_button_table, |
| .nbuttons = ARRAY_SIZE(simpad_polled_button_table), |
| .poll_interval = 50, |
| }; |
| |
| static struct platform_device simpad_polled_keys = { |
| .name = "gpio-keys-polled", |
| .dev = { |
| .platform_data = &simpad_polled_keys_data, |
| }, |
| }; |
| |
| /* |
| * GPIO LEDs |
| */ |
| |
| static struct gpio_led simpad_leds[] = { |
| { |
| .name = "simpad:power", |
| .gpio = SIMPAD_CS3_LED2_ON, |
| .active_low = 0, |
| .default_trigger = "default-on", |
| }, |
| }; |
| |
| static struct gpio_led_platform_data simpad_led_data = { |
| .num_leds = ARRAY_SIZE(simpad_leds), |
| .leds = simpad_leds, |
| }; |
| |
| static struct platform_device simpad_gpio_leds = { |
| .name = "leds-gpio", |
| .id = 0, |
| .dev = { |
| .platform_data = &simpad_led_data, |
| }, |
| }; |
| |
| /* |
| * i2c |
| */ |
| static struct i2c_gpio_platform_data simpad_i2c_data = { |
| .sda_pin = GPIO_GPIO21, |
| .scl_pin = GPIO_GPIO25, |
| .udelay = 10, |
| .timeout = HZ, |
| }; |
| |
| static struct platform_device simpad_i2c = { |
| .name = "i2c-gpio", |
| .id = 0, |
| .dev = { |
| .platform_data = &simpad_i2c_data, |
| }, |
| }; |
| |
| /* |
| * MediaQ Video Device |
| */ |
| static struct platform_device simpad_mq200fb = { |
| .name = "simpad-mq200", |
| .id = 0, |
| }; |
| |
| static struct platform_device *devices[] __initdata = { |
| &simpad_keys, |
| &simpad_polled_keys, |
| &simpad_mq200fb, |
| &simpad_gpio_leds, |
| &simpad_i2c, |
| }; |
| |
| |
| |
| static int __init simpad_init(void) |
| { |
| int ret; |
| |
| spin_lock_init(&cs3_lock); |
| |
| cs3_gpio.label = "simpad_cs3"; |
| cs3_gpio.base = SIMPAD_CS3_GPIO_BASE; |
| cs3_gpio.ngpio = 24; |
| cs3_gpio.set = cs3_gpio_set; |
| cs3_gpio.get = cs3_gpio_get; |
| cs3_gpio.direction_input = cs3_gpio_direction_input; |
| cs3_gpio.direction_output = cs3_gpio_direction_output; |
| ret = gpiochip_add(&cs3_gpio); |
| if (ret) |
| printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device"); |
| |
| pm_power_off = simpad_power_off; |
| |
| sa11x0_ppc_configure_mcp(); |
| sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources, |
| ARRAY_SIZE(simpad_flash_resources)); |
| sa11x0_register_mcp(&simpad_mcp_data); |
| |
| ret = platform_add_devices(devices, ARRAY_SIZE(devices)); |
| if(ret) |
| printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device"); |
| |
| return 0; |
| } |
| |
| arch_initcall(simpad_init); |
| |
| |
| MACHINE_START(SIMPAD, "Simpad") |
| /* Maintainer: Holger Freyther */ |
| .atag_offset = 0x100, |
| .map_io = simpad_map_io, |
| .nr_irqs = SA1100_NR_IRQS, |
| .init_irq = sa1100_init_irq, |
| .init_late = sa11x0_init_late, |
| .timer = &sa1100_timer, |
| .restart = sa11x0_restart, |
| MACHINE_END |