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ARM: h1940: Fix backlight and LCD power functions
[~shefty/rdma-dev.git] / arch / arm / mach-s3c2410 / mach-h1940.c
1 /* linux/arch/arm/mach-s3c2410/mach-h1940.c
2  *
3  * Copyright (c) 2003-2005 Simtec Electronics
4  *   Ben Dooks <ben@simtec.co.uk>
5  *
6  * http://www.handhelds.org/projects/h1940.html
7  *
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.
11  *
12 */
13
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>
24 #include <linux/io.h>
25 #include <linux/gpio.h>
26 #include <linux/pwm_backlight.h>
27 #include <video/platform_lcd.h>
28
29 #include <linux/mmc/host.h>
30
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33 #include <asm/mach/irq.h>
34
35 #include <mach/hardware.h>
36 #include <asm/irq.h>
37 #include <asm/mach-types.h>
38
39 #include <plat/regs-serial.h>
40 #include <mach/regs-lcd.h>
41 #include <mach/regs-clock.h>
42
43 #include <mach/regs-gpio.h>
44 #include <mach/gpio-fns.h>
45 #include <mach/gpio-nrs.h>
46
47 #include <mach/h1940.h>
48 #include <mach/h1940-latch.h>
49 #include <mach/fb.h>
50 #include <plat/udc.h>
51 #include <plat/iic.h>
52
53 #include <plat/gpio-cfg.h>
54 #include <plat/clock.h>
55 #include <plat/devs.h>
56 #include <plat/cpu.h>
57 #include <plat/pll.h>
58 #include <plat/pm.h>
59 #include <plat/mci.h>
60 #include <plat/ts.h>
61
62 #define H1940_LATCH             ((void __force __iomem *)0xF8000000)
63
64 #define H1940_PA_LATCH          S3C2410_CS2
65
66 #define H1940_LATCH_BIT(x)      (1 << ((x) + 16 - S3C_GPIO_END))
67
68 static struct map_desc h1940_iodesc[] __initdata = {
69         [0] = {
70                 .virtual        = (unsigned long)H1940_LATCH,
71                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
72                 .length         = SZ_16K,
73                 .type           = MT_DEVICE
74         },
75 };
76
77 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
78 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
79 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
80
81 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
82         [0] = {
83                 .hwport      = 0,
84                 .flags       = 0,
85                 .ucon        = 0x3c5,
86                 .ulcon       = 0x03,
87                 .ufcon       = 0x51,
88         },
89         [1] = {
90                 .hwport      = 1,
91                 .flags       = 0,
92                 .ucon        = 0x245,
93                 .ulcon       = 0x03,
94                 .ufcon       = 0x00,
95         },
96         /* IR port */
97         [2] = {
98                 .hwport      = 2,
99                 .flags       = 0,
100                 .uart_flags  = UPF_CONS_FLOW,
101                 .ucon        = 0x3c5,
102                 .ulcon       = 0x43,
103                 .ufcon       = 0x51,
104         }
105 };
106
107 /* Board control latch control */
108
109 static unsigned int latch_state;
110
111 static void h1940_latch_control(unsigned int clear, unsigned int set)
112 {
113         unsigned long flags;
114
115         local_irq_save(flags);
116
117         latch_state &= ~clear;
118         latch_state |= set;
119
120         __raw_writel(latch_state, H1940_LATCH);
121
122         local_irq_restore(flags);
123 }
124
125 static inline int h1940_gpiolib_to_latch(int offset)
126 {
127         return 1 << (offset + 16);
128 }
129
130 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
131                                         unsigned offset, int value)
132 {
133         int latch_bit = h1940_gpiolib_to_latch(offset);
134
135         h1940_latch_control(value ? 0 : latch_bit,
136                 value ? latch_bit : 0);
137 }
138
139 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
140                                         unsigned offset, int value)
141 {
142         h1940_gpiolib_latch_set(chip, offset, value);
143         return 0;
144 }
145
146 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
147                                         unsigned offset)
148 {
149         return (latch_state >> (offset + 16)) & 1;
150 }
151
152 struct gpio_chip h1940_latch_gpiochip = {
153         .base                   = H1940_LATCH_GPIO(0),
154         .owner                  = THIS_MODULE,
155         .label                  = "H1940_LATCH",
156         .ngpio                  = 16,
157         .direction_output       = h1940_gpiolib_latch_output,
158         .set                    = h1940_gpiolib_latch_set,
159         .get                    = h1940_gpiolib_latch_get,
160 };
161
162 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
163 {
164         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
165
166         switch (cmd)
167         {
168                 case S3C2410_UDC_P_ENABLE :
169                         gpio_set_value(H1940_LATCH_USB_DP, 1);
170                         break;
171                 case S3C2410_UDC_P_DISABLE :
172                         gpio_set_value(H1940_LATCH_USB_DP, 0);
173                         break;
174                 case S3C2410_UDC_P_RESET :
175                         break;
176                 default:
177                         break;
178         }
179 }
180
181 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
182         .udc_command            = h1940_udc_pullup,
183         .vbus_pin               = S3C2410_GPG(5),
184         .vbus_pin_inverted      = 1,
185 };
186
187 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
188                 .delay = 10000,
189                 .presc = 49,
190                 .oversampling_shift = 2,
191                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
192 };
193
194 /**
195  * Set lcd on or off
196  **/
197 static struct s3c2410fb_display h1940_lcd __initdata = {
198         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
199                         S3C2410_LCDCON5_INVVLINE | \
200                         S3C2410_LCDCON5_HWSWP,
201
202         .type =         S3C2410_LCDCON1_TFT,
203         .width =        240,
204         .height =       320,
205         .pixclock =     260000,
206         .xres =         240,
207         .yres =         320,
208         .bpp =          16,
209         .left_margin =  8,
210         .right_margin = 20,
211         .hsync_len =    4,
212         .upper_margin = 8,
213         .lower_margin = 7,
214         .vsync_len =    1,
215 };
216
217 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
218         .displays = &h1940_lcd,
219         .num_displays = 1,
220         .default_display = 0,
221
222         .lpcsel=        0x02,
223         .gpccon=        0xaa940659,
224         .gpccon_mask=   0xffffffff,
225         .gpcup=         0x0000ffff,
226         .gpcup_mask=    0xffffffff,
227         .gpdcon=        0xaa84aaa0,
228         .gpdcon_mask=   0xffffffff,
229         .gpdup=         0x0000faff,
230         .gpdup_mask=    0xffffffff,
231 };
232
233 static struct platform_device h1940_device_leds = {
234         .name             = "h1940-leds",
235         .id               = -1,
236 };
237
238 static struct platform_device h1940_device_bluetooth = {
239         .name             = "h1940-bt",
240         .id               = -1,
241 };
242
243 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
244 {
245         switch (power_mode) {
246         case MMC_POWER_OFF:
247                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
248                 break;
249         case MMC_POWER_UP:
250         case MMC_POWER_ON:
251                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
252                 break;
253         default:
254                 break;
255         };
256 }
257
258 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
259         .gpio_detect   = S3C2410_GPF(5),
260         .gpio_wprotect = S3C2410_GPH(8),
261         .set_power     = h1940_set_mmc_power,
262         .ocr_avail     = MMC_VDD_32_33,
263 };
264
265 static int h1940_backlight_init(struct device *dev)
266 {
267         gpio_request(S3C2410_GPB(0), "Backlight");
268
269         gpio_direction_output(S3C2410_GPB(0), 0);
270         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
271         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
272         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
273
274         return 0;
275 }
276
277 static int h1940_backlight_notify(struct device *dev, int brightness)
278 {
279         if (!brightness) {
280                 gpio_direction_output(S3C2410_GPB(0), 1);
281                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
282         } else {
283                 gpio_direction_output(S3C2410_GPB(0), 0);
284                 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
285                 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
286                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
287         }
288         return brightness;
289 }
290
291 static void h1940_backlight_exit(struct device *dev)
292 {
293         gpio_direction_output(S3C2410_GPB(0), 1);
294         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
295 }
296
297
298 static struct platform_pwm_backlight_data backlight_data = {
299         .pwm_id         = 0,
300         .max_brightness = 100,
301         .dft_brightness = 50,
302         /* tcnt = 0x31 */
303         .pwm_period_ns  = 36296,
304         .init           = h1940_backlight_init,
305         .notify         = h1940_backlight_notify,
306         .exit           = h1940_backlight_exit,
307 };
308
309 static struct platform_device h1940_backlight = {
310         .name = "pwm-backlight",
311         .dev  = {
312                 .parent = &s3c_device_timer[0].dev,
313                 .platform_data = &backlight_data,
314         },
315         .id   = -1,
316 };
317
318 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
319                                         unsigned int power)
320 {
321         int value;
322
323         if (!power) {
324                 gpio_set_value(S3C2410_GPC(0), 0);
325                 /* wait for 3ac */
326                 do {
327                         value = gpio_get_value(S3C2410_GPC(6));
328                 } while (value);
329
330                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
331                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
332                 gpio_set_value(H1940_LATCH_LCD_P4, 0);
333
334                 gpio_direction_output(S3C2410_GPC(1), 0);
335                 gpio_direction_output(S3C2410_GPC(4), 0);
336
337                 gpio_set_value(H1940_LATCH_LCD_P1, 0);
338                 gpio_set_value(H1940_LATCH_LCD_P0, 0);
339
340                 gpio_set_value(S3C2410_GPC(5), 0);
341
342         } else {
343                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
344                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
345
346                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
347                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
348
349                 gpio_set_value(S3C2410_GPC(5), 1);
350                 gpio_set_value(S3C2410_GPC(0), 1);
351
352                 gpio_set_value(H1940_LATCH_LCD_P3, 1);
353                 gpio_set_value(H1940_LATCH_LCD_P2, 1);
354                 gpio_set_value(H1940_LATCH_LCD_P4, 1);
355         }
356 }
357
358 static struct plat_lcd_data h1940_lcd_power_data = {
359         .set_power      = h1940_lcd_power_set,
360 };
361
362 static struct platform_device h1940_lcd_powerdev = {
363         .name                   = "platform-lcd",
364         .dev.parent             = &s3c_device_lcd.dev,
365         .dev.platform_data      = &h1940_lcd_power_data,
366 };
367
368 static struct platform_device *h1940_devices[] __initdata = {
369         &s3c_device_ohci,
370         &s3c_device_lcd,
371         &s3c_device_wdt,
372         &s3c_device_i2c0,
373         &s3c_device_iis,
374         &s3c_device_usbgadget,
375         &h1940_device_leds,
376         &h1940_device_bluetooth,
377         &s3c_device_sdi,
378         &s3c_device_rtc,
379         &s3c_device_timer[0],
380         &h1940_backlight,
381         &h1940_lcd_powerdev,
382         &s3c_device_adc,
383         &s3c_device_ts,
384 };
385
386 static void __init h1940_map_io(void)
387 {
388         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
389         s3c24xx_init_clocks(0);
390         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
391
392         /* setup PM */
393
394 #ifdef CONFIG_PM_H1940
395         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
396 #endif
397         s3c_pm_init();
398
399         /* Add latch gpio chip, set latch initial value */
400         h1940_latch_control(0, 0);
401         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
402 }
403
404 /* H1940 and RX3715 need to reserve this for suspend */
405 static void __init h1940_reserve(void)
406 {
407         memblock_reserve(0x30003000, 0x1000);
408         memblock_reserve(0x30081000, 0x1000);
409 }
410
411 static void __init h1940_init_irq(void)
412 {
413         s3c24xx_init_irq();
414 }
415
416 static void __init h1940_init(void)
417 {
418         u32 tmp;
419
420         s3c24xx_fb_set_platdata(&h1940_fb_info);
421         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
422         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
423         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
424         s3c_i2c0_set_platdata(NULL);
425
426         /* Turn off suspend on both USB ports, and switch the
427          * selectable USB port to USB device mode. */
428
429         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
430                               S3C2410_MISCCR_USBSUSPND0 |
431                               S3C2410_MISCCR_USBSUSPND1, 0x0);
432
433         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
434               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
435               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
436         writel(tmp, S3C2410_UPLLCON);
437
438         gpio_request(S3C2410_GPC(0), "LCD power");
439         gpio_request(S3C2410_GPC(1), "LCD power");
440         gpio_request(S3C2410_GPC(4), "LCD power");
441         gpio_request(S3C2410_GPC(5), "LCD power");
442         gpio_request(S3C2410_GPC(6), "LCD power");
443         gpio_request(H1940_LATCH_LCD_P0, "LCD power");
444         gpio_request(H1940_LATCH_LCD_P1, "LCD power");
445         gpio_request(H1940_LATCH_LCD_P2, "LCD power");
446         gpio_request(H1940_LATCH_LCD_P3, "LCD power");
447         gpio_request(H1940_LATCH_LCD_P4, "LCD power");
448         gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
449         gpio_direction_output(S3C2410_GPC(0), 0);
450         gpio_direction_output(S3C2410_GPC(1), 0);
451         gpio_direction_output(S3C2410_GPC(4), 0);
452         gpio_direction_output(S3C2410_GPC(5), 0);
453         gpio_direction_input(S3C2410_GPC(6));
454         gpio_direction_output(H1940_LATCH_LCD_P0, 0);
455         gpio_direction_output(H1940_LATCH_LCD_P1, 0);
456         gpio_direction_output(H1940_LATCH_LCD_P2, 0);
457         gpio_direction_output(H1940_LATCH_LCD_P3, 0);
458         gpio_direction_output(H1940_LATCH_LCD_P4, 0);
459         gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
460
461         gpio_request(H1940_LATCH_USB_DP, "USB pullup");
462         gpio_direction_output(H1940_LATCH_USB_DP, 0);
463
464         gpio_request(H1940_LATCH_SD_POWER, "SD power");
465         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
466
467         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
468 }
469
470 MACHINE_START(H1940, "IPAQ-H1940")
471         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
472         .phys_io        = S3C2410_PA_UART,
473         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
474         .boot_params    = S3C2410_SDRAM_PA + 0x100,
475         .map_io         = h1940_map_io,
476         .reserve        = h1940_reserve,
477         .init_irq       = h1940_init_irq,
478         .init_machine   = h1940_init,
479         .timer          = &s3c24xx_timer,
480 MACHINE_END