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 <video/platform_lcd.h>
29 #include <linux/mmc/host.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33 #include <asm/mach/irq.h>
35 #include <mach/hardware.h>
37 #include <asm/mach-types.h>
39 #include <plat/regs-serial.h>
40 #include <mach/regs-lcd.h>
41 #include <mach/regs-clock.h>
43 #include <mach/regs-gpio.h>
44 #include <mach/gpio-fns.h>
45 #include <mach/gpio-nrs.h>
47 #include <mach/h1940.h>
48 #include <mach/h1940-latch.h>
53 #include <plat/gpio-cfg.h>
54 #include <plat/clock.h>
55 #include <plat/devs.h>
62 static struct map_desc h1940_iodesc[] __initdata = {
64 .virtual = (unsigned long)H1940_LATCH,
65 .pfn = __phys_to_pfn(H1940_PA_LATCH),
71 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
72 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
73 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
75 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
94 .uart_flags = UPF_CONS_FLOW,
101 /* Board control latch control */
103 static unsigned int latch_state = H1940_LATCH_DEFAULT;
105 void h1940_latch_control(unsigned int clear, unsigned int set)
109 local_irq_save(flags);
111 latch_state &= ~clear;
114 __raw_writel(latch_state, H1940_LATCH);
116 local_irq_restore(flags);
119 EXPORT_SYMBOL_GPL(h1940_latch_control);
121 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
123 printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
127 case S3C2410_UDC_P_ENABLE :
128 h1940_latch_control(0, H1940_LATCH_USB_DP);
130 case S3C2410_UDC_P_DISABLE :
131 h1940_latch_control(H1940_LATCH_USB_DP, 0);
133 case S3C2410_UDC_P_RESET :
140 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
141 .udc_command = h1940_udc_pullup,
142 .vbus_pin = S3C2410_GPG(5),
143 .vbus_pin_inverted = 1,
146 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
149 .oversampling_shift = 2,
150 .cfg_gpio = s3c24xx_ts_cfg_gpio,
156 static struct s3c2410fb_display h1940_lcd __initdata = {
157 .lcdcon5= S3C2410_LCDCON5_FRM565 | \
158 S3C2410_LCDCON5_INVVLINE | \
159 S3C2410_LCDCON5_HWSWP,
161 .type = S3C2410_LCDCON1_TFT,
176 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
177 .displays = &h1940_lcd,
179 .default_display = 0,
183 .gpccon_mask= 0xffffffff,
185 .gpcup_mask= 0xffffffff,
187 .gpdcon_mask= 0xffffffff,
189 .gpdup_mask= 0xffffffff,
192 static struct platform_device h1940_device_leds = {
193 .name = "h1940-leds",
197 static struct platform_device h1940_device_bluetooth = {
202 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
203 .gpio_detect = S3C2410_GPF(5),
204 .gpio_wprotect = S3C2410_GPH(8),
206 .ocr_avail = MMC_VDD_32_33,
209 static int h1940_backlight_init(struct device *dev)
211 gpio_request(S3C2410_GPB(0), "Backlight");
213 gpio_direction_output(S3C2410_GPB(0), 0);
214 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
215 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
220 static void h1940_backlight_exit(struct device *dev)
222 gpio_direction_output(S3C2410_GPB(0), 1);
225 static struct platform_pwm_backlight_data backlight_data = {
227 .max_brightness = 100,
228 .dft_brightness = 50,
230 .pwm_period_ns = 36296,
231 .init = h1940_backlight_init,
232 .exit = h1940_backlight_exit,
235 static struct platform_device h1940_backlight = {
236 .name = "pwm-backlight",
238 .parent = &s3c_device_timer[0].dev,
239 .platform_data = &backlight_data,
244 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
251 gpio_direction_output(S3C2410_GPC(0), 0);
254 value = gpio_get_value(S3C2410_GPC(6));
257 gpio_direction_output(S3C2410_GPC(5), 0);
260 gpio_direction_output(S3C2410_GPC(5), 1);
262 gpio_direction_output(S3C2410_GPC(0), 1);
266 static struct plat_lcd_data h1940_lcd_power_data = {
267 .set_power = h1940_lcd_power_set,
270 static struct platform_device h1940_lcd_powerdev = {
271 .name = "platform-lcd",
272 .dev.parent = &s3c_device_lcd.dev,
273 .dev.platform_data = &h1940_lcd_power_data,
276 static struct platform_device *h1940_devices[] __initdata = {
282 &s3c_device_usbgadget,
284 &h1940_device_bluetooth,
287 &s3c_device_timer[0],
294 static void __init h1940_map_io(void)
296 s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
297 s3c24xx_init_clocks(0);
298 s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
302 #ifdef CONFIG_PM_H1940
303 memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
308 /* H1940 and RX3715 need to reserve this for suspend */
309 static void __init h1940_reserve(void)
311 memblock_reserve(0x30003000, 0x1000);
312 memblock_reserve(0x30081000, 0x1000);
315 static void __init h1940_init_irq(void)
320 static void __init h1940_init(void)
324 s3c24xx_fb_set_platdata(&h1940_fb_info);
325 s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
326 s3c24xx_udc_set_platdata(&h1940_udc_cfg);
327 s3c24xx_ts_set_platdata(&h1940_ts_cfg);
328 s3c_i2c0_set_platdata(NULL);
330 /* Turn off suspend on both USB ports, and switch the
331 * selectable USB port to USB device mode. */
333 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
334 S3C2410_MISCCR_USBSUSPND0 |
335 S3C2410_MISCCR_USBSUSPND1, 0x0);
337 tmp = (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
338 | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
339 | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
340 writel(tmp, S3C2410_UPLLCON);
342 gpio_request(S3C2410_GPC(0), "LCD power");
343 gpio_request(S3C2410_GPC(5), "LCD power");
344 gpio_request(S3C2410_GPC(6), "LCD power");
346 gpio_direction_input(S3C2410_GPC(6));
348 platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
351 MACHINE_START(H1940, "IPAQ-H1940")
352 /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
353 .boot_params = S3C2410_SDRAM_PA + 0x100,
354 .map_io = h1940_map_io,
355 .reserve = h1940_reserve,
356 .init_irq = h1940_init_irq,
357 .init_machine = h1940_init,
358 .timer = &s3c24xx_timer,