2 * linux/arch/arm/mach-sa1100/simpad.c
5 #include <linux/module.h>
6 #include <linux/init.h>
7 #include <linux/kernel.h>
9 #include <linux/proc_fs.h>
10 #include <linux/string.h>
12 #include <linux/platform_data/sa11x0-serial.h>
13 #include <linux/platform_device.h>
14 #include <linux/mfd/ucb1x00.h>
15 #include <linux/mtd/mtd.h>
16 #include <linux/mtd/partitions.h>
18 #include <linux/gpio/driver.h>
20 #include <mach/hardware.h>
21 #include <asm/setup.h>
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/flash.h>
27 #include <asm/mach/map.h>
28 #include <linux/platform_data/mfd-mcp-sa11x0.h>
29 #include <mach/simpad.h>
30 #include <mach/irqs.h>
32 #include <linux/serial_core.h>
33 #include <linux/ioport.h>
34 #include <linux/input.h>
35 #include <linux/gpio_keys.h>
36 #include <linux/leds.h>
37 #include <linux/i2c-gpio.h>
45 static long cs3_shadow;
46 static spinlock_t cs3_lock;
47 static struct gpio_chip cs3_gpio;
49 long simpad_get_cs3_ro(void)
51 return readl(CS3_BASE);
53 EXPORT_SYMBOL(simpad_get_cs3_ro);
55 long simpad_get_cs3_shadow(void)
59 EXPORT_SYMBOL(simpad_get_cs3_shadow);
61 static void __simpad_write_cs3(void)
63 writel(cs3_shadow, CS3_BASE);
66 void simpad_set_cs3_bit(int value)
70 spin_lock_irqsave(&cs3_lock, flags);
73 spin_unlock_irqrestore(&cs3_lock, flags);
75 EXPORT_SYMBOL(simpad_set_cs3_bit);
77 void simpad_clear_cs3_bit(int value)
81 spin_lock_irqsave(&cs3_lock, flags);
84 spin_unlock_irqrestore(&cs3_lock, flags);
86 EXPORT_SYMBOL(simpad_clear_cs3_bit);
88 static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
93 simpad_set_cs3_bit(1 << offset);
95 simpad_clear_cs3_bit(1 << offset);
98 static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
101 return !!(simpad_get_cs3_ro() & (1 << (offset - 16)));
102 return !!(simpad_get_cs3_shadow() & (1 << offset));
105 static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
112 static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
117 cs3_gpio_set(chip, offset, value);
121 static struct map_desc simpad_io_desc[] __initdata = {
123 .virtual = 0xf2800000,
124 .pfn = __phys_to_pfn(0x4b800000),
125 .length = 0x00800000,
127 }, { /* Simpad CS3 */
128 .virtual = (unsigned long)CS3_BASE,
129 .pfn = __phys_to_pfn(SA1100_CS3_PHYS),
130 .length = 0x00100000,
136 static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
138 if (port->mapbase == (u_int)&Ser1UTCR0) {
141 simpad_clear_cs3_bit(RS232_ON);
142 simpad_clear_cs3_bit(DECT_POWER_ON);
145 simpad_set_cs3_bit(RS232_ON);
146 simpad_set_cs3_bit(DECT_POWER_ON);
151 static struct sa1100_port_fns simpad_port_fns __initdata = {
152 .pm = simpad_uart_pm,
156 static struct mtd_partition simpad_partitions[] = {
158 .name = "SIMpad boot firmware",
161 .mask_flags = MTD_WRITEABLE,
163 .name = "SIMpad kernel",
165 .offset = MTDPART_OFS_APPEND,
167 .name = "SIMpad root jffs2",
168 .size = MTDPART_SIZ_FULL,
169 .offset = MTDPART_OFS_APPEND,
173 static struct flash_platform_data simpad_flash_data = {
174 .map_name = "cfi_probe",
175 .parts = simpad_partitions,
176 .nr_parts = ARRAY_SIZE(simpad_partitions),
180 static struct resource simpad_flash_resources [] = {
181 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M),
182 DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
185 static struct ucb1x00_plat_data simpad_ucb1x00_data = {
186 .gpio_base = SIMPAD_UCB1X00_GPIO_BASE,
189 static struct mcp_plat_data simpad_mcp_data = {
191 .sclk_rate = 11981000,
192 .codec_pdata = &simpad_ucb1x00_data,
197 static void __init simpad_map_io(void)
201 iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
204 cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON |
205 RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
206 __simpad_write_cs3(); /* Spinlocks not yet initialized */
208 sa1100_register_uart_fns(&simpad_port_fns);
209 sa1100_register_uart(0, 3); /* serial interface */
210 sa1100_register_uart(1, 1); /* DECT */
212 // Reassign UART 1 pins
213 GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
214 GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
215 GPDR &= ~GPIO_UART_RXD;
219 * Set up registers for sleep mode.
223 PWER = PWER_GPIO0| PWER_RTC;
230 static void simpad_power_off(void)
233 cs3_shadow = SD_MEDIAQ;
234 __simpad_write_cs3(); /* Bypass spinlock here */
236 /* disable internal oscillator, float CS lines */
237 PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
238 /* enable wake-up on GPIO0 */
239 PWER = GFER = GRER = PWER_GPIO0;
241 * set scratchpad to zero, just in case it is used as a
242 * restart address by the bootloader.
246 /* enter sleep mode */
250 local_irq_enable(); /* we won't ever call it */
259 static struct gpio_keys_button simpad_button_table[] = {
260 { KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
263 static struct gpio_keys_platform_data simpad_keys_data = {
264 .buttons = simpad_button_table,
265 .nbuttons = ARRAY_SIZE(simpad_button_table),
268 static struct platform_device simpad_keys = {
271 .platform_data = &simpad_keys_data,
275 static struct gpio_keys_button simpad_polled_button_table[] = {
276 { KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
277 { KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
278 { KEY_UP, SIMPAD_UCB1X00_GPIO_UP, 1, "up button" },
279 { KEY_DOWN, SIMPAD_UCB1X00_GPIO_DOWN, 1, "down button" },
280 { KEY_LEFT, SIMPAD_UCB1X00_GPIO_LEFT, 1, "left button" },
281 { KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
284 static struct gpio_keys_platform_data simpad_polled_keys_data = {
285 .buttons = simpad_polled_button_table,
286 .nbuttons = ARRAY_SIZE(simpad_polled_button_table),
290 static struct platform_device simpad_polled_keys = {
291 .name = "gpio-keys-polled",
293 .platform_data = &simpad_polled_keys_data,
301 static struct gpio_led simpad_leds[] = {
303 .name = "simpad:power",
304 .gpio = SIMPAD_CS3_LED2_ON,
306 .default_trigger = "default-on",
310 static struct gpio_led_platform_data simpad_led_data = {
311 .num_leds = ARRAY_SIZE(simpad_leds),
315 static struct platform_device simpad_gpio_leds = {
319 .platform_data = &simpad_led_data,
326 static struct i2c_gpio_platform_data simpad_i2c_data = {
327 .sda_pin = GPIO_GPIO21,
328 .scl_pin = GPIO_GPIO25,
333 static struct platform_device simpad_i2c = {
337 .platform_data = &simpad_i2c_data,
342 * MediaQ Video Device
344 static struct platform_device simpad_mq200fb = {
345 .name = "simpad-mq200",
349 static struct platform_device *devices[] __initdata = {
359 static int __init simpad_init(void)
363 spin_lock_init(&cs3_lock);
365 cs3_gpio.label = "simpad_cs3";
366 cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
368 cs3_gpio.set = cs3_gpio_set;
369 cs3_gpio.get = cs3_gpio_get;
370 cs3_gpio.direction_input = cs3_gpio_direction_input;
371 cs3_gpio.direction_output = cs3_gpio_direction_output;
372 ret = gpiochip_add_data(&cs3_gpio, NULL);
374 printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");
376 pm_power_off = simpad_power_off;
378 sa11x0_ppc_configure_mcp();
379 sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
380 ARRAY_SIZE(simpad_flash_resources));
381 sa11x0_register_mcp(&simpad_mcp_data);
383 ret = platform_add_devices(devices, ARRAY_SIZE(devices));
385 printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
390 arch_initcall(simpad_init);
393 MACHINE_START(SIMPAD, "Simpad")
394 /* Maintainer: Holger Freyther */
395 .atag_offset = 0x100,
396 .map_io = simpad_map_io,
397 .nr_irqs = SA1100_NR_IRQS,
398 .init_irq = sa1100_init_irq,
399 .init_late = sa11x0_init_late,
400 .init_time = sa1100_timer_init,
401 .restart = sa11x0_restart,