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linux/arch/arm/mach-sa1100/simpad.c
Stephen Warren 6bb27d7349 ARM: delete struct sys_timer 
Now that the only field in struct sys_timer is .init, delete the struct,
and replace the machine descriptor .timer field with the initialization
function itself.

This will enable moving timer drivers into drivers/clocksource without
having to place a public prototype of each struct sys_timer object into
include/linux; the intent is to create a single of_clocksource_init()
function that determines which timer driver to initialize by scanning
the device dtree, much like the proposed irqchip_init() at:
http://www.spinics.net/lists/arm-kernel/msg203686.html

Includes mach-omap2 fixes from Igor Grinberg.

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-12-24 09:36:38 -07:00

402 lines
8.5 KiB
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/*
* 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/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
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