diff options
Diffstat (limited to 'arch/arm/mach-sa1100/simpad.c')
| -rw-r--r-- | arch/arm/mach-sa1100/simpad.c | 213 |
1 files changed, 188 insertions, 25 deletions
diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index a1c2427655d..4790f3f3d00 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -13,6 +13,7 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <linux/io.h> +#include <linux/gpio.h> #include <asm/irq.h> #include <mach/hardware.h> @@ -28,35 +29,92 @@ #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" -long cs3_shadow; +/* + * CS3 support + */ -long get_cs3_shadow(void) +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); -void set_cs3(long value) +static void __simpad_write_cs3(void) { - *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow = value; + writel(cs3_shadow, CS3_BASE); } -void set_cs3_bit(int value) +void simpad_set_cs3_bit(int value) { + unsigned long flags; + + spin_lock_irqsave(&cs3_lock, flags); cs3_shadow |= value; - *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow; + __simpad_write_cs3(); + spin_unlock_irqrestore(&cs3_lock, flags); } +EXPORT_SYMBOL(simpad_set_cs3_bit); -void clear_cs3_bit(int value) +void simpad_clear_cs3_bit(int value) { + unsigned long flags; + + spin_lock_irqsave(&cs3_lock, flags); cs3_shadow &= ~value; - *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow; + __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); +}; -EXPORT_SYMBOL(set_cs3_bit); -EXPORT_SYMBOL(clear_cs3_bit); +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 */ @@ -64,9 +122,9 @@ static struct map_desc simpad_io_desc[] __initdata = { .pfn = __phys_to_pfn(0x4b800000), .length = 0x00800000, .type = MT_DEVICE - }, { /* Paules CS3, write only */ - .virtual = 0xf1000000, - .pfn = __phys_to_pfn(0x18000000), + }, { /* Simpad CS3 */ + .virtual = CS3_BASE, + .pfn = __phys_to_pfn(SA1100_CS3_PHYS), .length = 0x00100000, .type = MT_DEVICE }, @@ -78,12 +136,12 @@ static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate) if (port->mapbase == (u_int)&Ser1UTCR0) { if (state) { - clear_cs3_bit(RS232_ON); - clear_cs3_bit(DECT_POWER_ON); + simpad_clear_cs3_bit(RS232_ON); + simpad_clear_cs3_bit(DECT_POWER_ON); }else { - set_cs3_bit(RS232_ON); - set_cs3_bit(DECT_POWER_ON); + simpad_set_cs3_bit(RS232_ON); + simpad_set_cs3_bit(DECT_POWER_ON); } } } @@ -132,6 +190,7 @@ static struct resource simpad_flash_resources [] = { static struct mcp_plat_data simpad_mcp_data = { .mccr0 = MCCR0_ADM, .sclk_rate = 11981000, + .gpio_base = SIMPAD_UCB1X00_GPIO_BASE, }; @@ -142,9 +201,10 @@ static void __init simpad_map_io(void) iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc)); - set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON | - ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON); - + /* 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 */ @@ -170,13 +230,14 @@ static void __init simpad_map_io(void) static void simpad_power_off(void) { - local_irq_disable(); // was cli - set_cs3(0x800); /* only SD_MEDIAQ */ + 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 (Assabet...) */ - PWER = GFER = GRER = 1; + /* 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. @@ -192,6 +253,91 @@ static void simpad_power_off(void) } +/* + * 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 @@ -202,7 +348,11 @@ static struct platform_device simpad_mq200fb = { }; static struct platform_device *devices[] __initdata = { - &simpad_mq200fb + &simpad_keys, + &simpad_polled_keys, + &simpad_mq200fb, + &simpad_gpio_leds, + &simpad_i2c, }; @@ -211,6 +361,19 @@ 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_register_mtd(&simpad_flash_data, simpad_flash_resources, |