1 /* linux/arch/arm/mach-s3c2410/mach-h1940.c
3 * Copyright (c) 2003-2005 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
6 * http://www.handhelds.org/projects/h1940.html
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
14 #include <linux/kernel.h>
15 #include <linux/types.h>
16 #include <linux/interrupt.h>
17 #include <linux/list.h>
18 #include <linux/memblock.h>
19 #include <linux/timer.h>
20 #include <linux/init.h>
21 #include <linux/sysdev.h>
22 #include <linux/serial_core.h>
23 #include <linux/platform_device.h>
25 #include <linux/gpio.h>
26 #include <linux/pwm_backlight.h>
27 #include <linux/i2c.h>
28 #include <video/platform_lcd.h>
30 #include <linux/mmc/host.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/map.h>
34 #include <asm/mach/irq.h>
36 #include <mach/hardware.h>
38 #include <asm/mach-types.h>
40 #include <plat/regs-serial.h>
41 #include <mach/regs-lcd.h>
42 #include <mach/regs-clock.h>
44 #include <mach/regs-gpio.h>
45 #include <mach/gpio-fns.h>
46 #include <mach/gpio-nrs.h>
48 #include <mach/h1940.h>
49 #include <mach/h1940-latch.h>
54 #include <plat/gpio-cfg.h>
55 #include <plat/clock.h>
56 #include <plat/devs.h>
63 #include <sound/uda1380.h>
65 #define H1940_LATCH ((void __force __iomem *)0xF8000000)
67 #define H1940_PA_LATCH S3C2410_CS2
69 #define H1940_LATCH_BIT(x) (1 << ((x) + 16 - S3C_GPIO_END))
71 static struct map_desc h1940_iodesc[] __initdata = {
73 .virtual = (unsigned long)H1940_LATCH,
74 .pfn = __phys_to_pfn(H1940_PA_LATCH),
80 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
81 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
82 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
84 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
103 .uart_flags = UPF_CONS_FLOW,
110 /* Board control latch control */
112 static unsigned int latch_state;
114 static void h1940_latch_control(unsigned int clear, unsigned int set)
118 local_irq_save(flags);
120 latch_state &= ~clear;
123 __raw_writel(latch_state, H1940_LATCH);
125 local_irq_restore(flags);
128 static inline int h1940_gpiolib_to_latch(int offset)
130 return 1 << (offset + 16);
133 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
134 unsigned offset, int value)
136 int latch_bit = h1940_gpiolib_to_latch(offset);
138 h1940_latch_control(value ? 0 : latch_bit,
139 value ? latch_bit : 0);
142 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
143 unsigned offset, int value)
145 h1940_gpiolib_latch_set(chip, offset, value);
149 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
152 return (latch_state >> (offset + 16)) & 1;
155 struct gpio_chip h1940_latch_gpiochip = {
156 .base = H1940_LATCH_GPIO(0),
157 .owner = THIS_MODULE,
158 .label = "H1940_LATCH",
160 .direction_output = h1940_gpiolib_latch_output,
161 .set = h1940_gpiolib_latch_set,
162 .get = h1940_gpiolib_latch_get,
165 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
166 .vbus_pin = S3C2410_GPG(5),
167 .vbus_pin_inverted = 1,
168 .pullup_pin = H1940_LATCH_USB_DP,
171 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
174 .oversampling_shift = 2,
175 .cfg_gpio = s3c24xx_ts_cfg_gpio,
181 static struct s3c2410fb_display h1940_lcd __initdata = {
182 .lcdcon5= S3C2410_LCDCON5_FRM565 | \
183 S3C2410_LCDCON5_INVVLINE | \
184 S3C2410_LCDCON5_HWSWP,
186 .type = S3C2410_LCDCON1_TFT,
201 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
202 .displays = &h1940_lcd,
204 .default_display = 0,
208 .gpccon_mask= 0xffffffff,
210 .gpcup_mask= 0xffffffff,
212 .gpdcon_mask= 0xffffffff,
214 .gpdup_mask= 0xffffffff,
217 static struct platform_device h1940_device_leds = {
218 .name = "h1940-leds",
222 static struct platform_device h1940_device_bluetooth = {
227 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
229 switch (power_mode) {
231 gpio_set_value(H1940_LATCH_SD_POWER, 0);
235 gpio_set_value(H1940_LATCH_SD_POWER, 1);
242 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
243 .gpio_detect = S3C2410_GPF(5),
244 .gpio_wprotect = S3C2410_GPH(8),
245 .set_power = h1940_set_mmc_power,
246 .ocr_avail = MMC_VDD_32_33,
249 static int h1940_backlight_init(struct device *dev)
251 gpio_request(S3C2410_GPB(0), "Backlight");
253 gpio_direction_output(S3C2410_GPB(0), 0);
254 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
255 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
256 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
261 static int h1940_backlight_notify(struct device *dev, int brightness)
264 gpio_direction_output(S3C2410_GPB(0), 1);
265 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
267 gpio_direction_output(S3C2410_GPB(0), 0);
268 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
269 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
270 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
275 static void h1940_backlight_exit(struct device *dev)
277 gpio_direction_output(S3C2410_GPB(0), 1);
278 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
282 static struct platform_pwm_backlight_data backlight_data = {
284 .max_brightness = 100,
285 .dft_brightness = 50,
287 .pwm_period_ns = 36296,
288 .init = h1940_backlight_init,
289 .notify = h1940_backlight_notify,
290 .exit = h1940_backlight_exit,
293 static struct platform_device h1940_backlight = {
294 .name = "pwm-backlight",
296 .parent = &s3c_device_timer[0].dev,
297 .platform_data = &backlight_data,
302 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
308 gpio_set_value(S3C2410_GPC(0), 0);
311 value = gpio_get_value(S3C2410_GPC(6));
314 gpio_set_value(H1940_LATCH_LCD_P2, 0);
315 gpio_set_value(H1940_LATCH_LCD_P3, 0);
316 gpio_set_value(H1940_LATCH_LCD_P4, 0);
318 gpio_direction_output(S3C2410_GPC(1), 0);
319 gpio_direction_output(S3C2410_GPC(4), 0);
321 gpio_set_value(H1940_LATCH_LCD_P1, 0);
322 gpio_set_value(H1940_LATCH_LCD_P0, 0);
324 gpio_set_value(S3C2410_GPC(5), 0);
327 gpio_set_value(H1940_LATCH_LCD_P0, 1);
328 gpio_set_value(H1940_LATCH_LCD_P1, 1);
330 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
331 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
333 gpio_set_value(S3C2410_GPC(5), 1);
334 gpio_set_value(S3C2410_GPC(0), 1);
336 gpio_set_value(H1940_LATCH_LCD_P3, 1);
337 gpio_set_value(H1940_LATCH_LCD_P2, 1);
338 gpio_set_value(H1940_LATCH_LCD_P4, 1);
342 static struct plat_lcd_data h1940_lcd_power_data = {
343 .set_power = h1940_lcd_power_set,
346 static struct platform_device h1940_lcd_powerdev = {
347 .name = "platform-lcd",
348 .dev.parent = &s3c_device_lcd.dev,
349 .dev.platform_data = &h1940_lcd_power_data,
352 static struct uda1380_platform_data uda1380_info = {
353 .gpio_power = H1940_LATCH_UDA_POWER,
354 .gpio_reset = S3C2410_GPA(12),
355 .dac_clk = UDA1380_DAC_CLK_SYSCLK,
358 static struct i2c_board_info h1940_i2c_devices[] = {
360 I2C_BOARD_INFO("uda1380", 0x1a),
361 .platform_data = &uda1380_info,
365 static struct platform_device *h1940_devices[] __initdata = {
372 &s3c_device_usbgadget,
374 &h1940_device_bluetooth,
377 &s3c_device_timer[0],
384 static void __init h1940_map_io(void)
386 s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
387 s3c24xx_init_clocks(0);
388 s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
392 #ifdef CONFIG_PM_H1940
393 memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
397 /* Add latch gpio chip, set latch initial value */
398 h1940_latch_control(0, 0);
399 WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
402 /* H1940 and RX3715 need to reserve this for suspend */
403 static void __init h1940_reserve(void)
405 memblock_reserve(0x30003000, 0x1000);
406 memblock_reserve(0x30081000, 0x1000);
409 static void __init h1940_init_irq(void)
414 static void __init h1940_init(void)
418 s3c24xx_fb_set_platdata(&h1940_fb_info);
419 s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
420 s3c24xx_udc_set_platdata(&h1940_udc_cfg);
421 s3c24xx_ts_set_platdata(&h1940_ts_cfg);
422 s3c_i2c0_set_platdata(NULL);
424 /* Turn off suspend on both USB ports, and switch the
425 * selectable USB port to USB device mode. */
427 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
428 S3C2410_MISCCR_USBSUSPND0 |
429 S3C2410_MISCCR_USBSUSPND1, 0x0);
431 tmp = (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
432 | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
433 | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
434 writel(tmp, S3C2410_UPLLCON);
436 gpio_request(S3C2410_GPC(0), "LCD power");
437 gpio_request(S3C2410_GPC(1), "LCD power");
438 gpio_request(S3C2410_GPC(4), "LCD power");
439 gpio_request(S3C2410_GPC(5), "LCD power");
440 gpio_request(S3C2410_GPC(6), "LCD power");
441 gpio_request(H1940_LATCH_LCD_P0, "LCD power");
442 gpio_request(H1940_LATCH_LCD_P1, "LCD power");
443 gpio_request(H1940_LATCH_LCD_P2, "LCD power");
444 gpio_request(H1940_LATCH_LCD_P3, "LCD power");
445 gpio_request(H1940_LATCH_LCD_P4, "LCD power");
446 gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
447 gpio_direction_output(S3C2410_GPC(0), 0);
448 gpio_direction_output(S3C2410_GPC(1), 0);
449 gpio_direction_output(S3C2410_GPC(4), 0);
450 gpio_direction_output(S3C2410_GPC(5), 0);
451 gpio_direction_input(S3C2410_GPC(6));
452 gpio_direction_output(H1940_LATCH_LCD_P0, 0);
453 gpio_direction_output(H1940_LATCH_LCD_P1, 0);
454 gpio_direction_output(H1940_LATCH_LCD_P2, 0);
455 gpio_direction_output(H1940_LATCH_LCD_P3, 0);
456 gpio_direction_output(H1940_LATCH_LCD_P4, 0);
457 gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
459 gpio_request(H1940_LATCH_SD_POWER, "SD power");
460 gpio_direction_output(H1940_LATCH_SD_POWER, 0);
462 platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
464 i2c_register_board_info(0, h1940_i2c_devices,
465 ARRAY_SIZE(h1940_i2c_devices));
468 MACHINE_START(H1940, "IPAQ-H1940")
469 /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
470 .boot_params = S3C2410_SDRAM_PA + 0x100,
471 .map_io = h1940_map_io,
472 .reserve = h1940_reserve,
473 .init_irq = h1940_init_irq,
474 .init_machine = h1940_init,
475 .timer = &s3c24xx_timer,