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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/mach-sa1100/simpad.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/mach-sa1100/simpad.c')
-rw-r--r-- | kernel/arch/arm/mach-sa1100/simpad.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-sa1100/simpad.c b/kernel/arch/arm/mach-sa1100/simpad.c new file mode 100644 index 000000000..41e476e57 --- /dev/null +++ b/kernel/arch/arm/mach-sa1100/simpad.c @@ -0,0 +1,402 @@ +/* + * 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_data/sa11x0-serial.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/irq.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/flash.h> +#include <asm/mach/map.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 = (unsigned long)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, + .init_time = sa1100_timer_init, + .restart = sa11x0_restart, +MACHINE_END |