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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 = H1940_LATCH_BIT(H1940_LATCH_LCD_P4) |
110         H1940_LATCH_BIT(H1940_LATCH_SM803_ENABLE)       |
111         H1940_LATCH_BIT(H1940_LATCH_SDQ1)                       |
112         H1940_LATCH_BIT(H1940_LATCH_LCD_P1)                     |
113         H1940_LATCH_BIT(H1940_LATCH_LCD_P2)                     |
114         H1940_LATCH_BIT(H1940_LATCH_LCD_P3)                     |
115         H1940_LATCH_BIT(H1940_LATCH_MAX1698_nSHUTDOWN);
116
117 static void h1940_latch_control(unsigned int clear, unsigned int set)
118 {
119         unsigned long flags;
120
121         local_irq_save(flags);
122
123         latch_state &= ~clear;
124         latch_state |= set;
125
126         __raw_writel(latch_state, H1940_LATCH);
127
128         local_irq_restore(flags);
129 }
130
131 static inline int h1940_gpiolib_to_latch(int offset)
132 {
133         return 1 << (offset + 16);
134 }
135
136 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
137                                         unsigned offset, int value)
138 {
139         int latch_bit = h1940_gpiolib_to_latch(offset);
140
141         h1940_latch_control(value ? 0 : latch_bit,
142                 value ? latch_bit : 0);
143 }
144
145 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
146                                         unsigned offset, int value)
147 {
148         h1940_gpiolib_latch_set(chip, offset, value);
149         return 0;
150 }
151
152 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
153                                         unsigned offset)
154 {
155         return (latch_state >> (offset + 16)) & 1;
156 }
157
158 struct gpio_chip h1940_latch_gpiochip = {
159         .base                   = H1940_LATCH_GPIO(0),
160         .owner                  = THIS_MODULE,
161         .label                  = "H1940_LATCH",
162         .ngpio                  = 16,
163         .direction_output       = h1940_gpiolib_latch_output,
164         .set                    = h1940_gpiolib_latch_set,
165         .get                    = h1940_gpiolib_latch_get,
166 };
167
168 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
169 {
170         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
171
172         switch (cmd)
173         {
174                 case S3C2410_UDC_P_ENABLE :
175                         gpio_set_value(H1940_LATCH_USB_DP, 1);
176                         break;
177                 case S3C2410_UDC_P_DISABLE :
178                         gpio_set_value(H1940_LATCH_USB_DP, 0);
179                         break;
180                 case S3C2410_UDC_P_RESET :
181                         break;
182                 default:
183                         break;
184         }
185 }
186
187 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
188         .udc_command            = h1940_udc_pullup,
189         .vbus_pin               = S3C2410_GPG(5),
190         .vbus_pin_inverted      = 1,
191 };
192
193 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
194                 .delay = 10000,
195                 .presc = 49,
196                 .oversampling_shift = 2,
197                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
198 };
199
200 /**
201  * Set lcd on or off
202  **/
203 static struct s3c2410fb_display h1940_lcd __initdata = {
204         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
205                         S3C2410_LCDCON5_INVVLINE | \
206                         S3C2410_LCDCON5_HWSWP,
207
208         .type =         S3C2410_LCDCON1_TFT,
209         .width =        240,
210         .height =       320,
211         .pixclock =     260000,
212         .xres =         240,
213         .yres =         320,
214         .bpp =          16,
215         .left_margin =  8,
216         .right_margin = 20,
217         .hsync_len =    4,
218         .upper_margin = 8,
219         .lower_margin = 7,
220         .vsync_len =    1,
221 };
222
223 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
224         .displays = &h1940_lcd,
225         .num_displays = 1,
226         .default_display = 0,
227
228         .lpcsel=        0x02,
229         .gpccon=        0xaa940659,
230         .gpccon_mask=   0xffffffff,
231         .gpcup=         0x0000ffff,
232         .gpcup_mask=    0xffffffff,
233         .gpdcon=        0xaa84aaa0,
234         .gpdcon_mask=   0xffffffff,
235         .gpdup=         0x0000faff,
236         .gpdup_mask=    0xffffffff,
237 };
238
239 static struct platform_device h1940_device_leds = {
240         .name             = "h1940-leds",
241         .id               = -1,
242 };
243
244 static struct platform_device h1940_device_bluetooth = {
245         .name             = "h1940-bt",
246         .id               = -1,
247 };
248
249 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
250 {
251         switch (power_mode) {
252         case MMC_POWER_OFF:
253                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
254                 break;
255         case MMC_POWER_UP:
256         case MMC_POWER_ON:
257                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
258                 break;
259         default:
260                 break;
261         };
262 }
263
264 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
265         .gpio_detect   = S3C2410_GPF(5),
266         .gpio_wprotect = S3C2410_GPH(8),
267         .set_power     = h1940_set_mmc_power,
268         .ocr_avail     = MMC_VDD_32_33,
269 };
270
271 static int h1940_backlight_init(struct device *dev)
272 {
273         gpio_request(S3C2410_GPB(0), "Backlight");
274
275         gpio_direction_output(S3C2410_GPB(0), 0);
276         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
277         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
278
279         return 0;
280 }
281
282 static void h1940_backlight_exit(struct device *dev)
283 {
284         gpio_direction_output(S3C2410_GPB(0), 1);
285 }
286
287 static struct platform_pwm_backlight_data backlight_data = {
288         .pwm_id         = 0,
289         .max_brightness = 100,
290         .dft_brightness = 50,
291         /* tcnt = 0x31 */
292         .pwm_period_ns  = 36296,
293         .init           = h1940_backlight_init,
294         .exit           = h1940_backlight_exit,
295 };
296
297 static struct platform_device h1940_backlight = {
298         .name = "pwm-backlight",
299         .dev  = {
300                 .parent = &s3c_device_timer[0].dev,
301                 .platform_data = &backlight_data,
302         },
303         .id   = -1,
304 };
305
306 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
307                                         unsigned int power)
308 {
309         int value;
310
311         if (!power) {
312                 /* set to 3ec */
313                 gpio_direction_output(S3C2410_GPC(0), 0);
314                 /* wait for 3ac */
315                 do {
316                         value = gpio_get_value(S3C2410_GPC(6));
317                 } while (value);
318                 /* set to 38c */
319                 gpio_direction_output(S3C2410_GPC(5), 0);
320         } else {
321                 /* Set to 3ac */
322                 gpio_direction_output(S3C2410_GPC(5), 1);
323                 /* Set to 3ad */
324                 gpio_direction_output(S3C2410_GPC(0), 1);
325         }
326 }
327
328 static struct plat_lcd_data h1940_lcd_power_data = {
329         .set_power      = h1940_lcd_power_set,
330 };
331
332 static struct platform_device h1940_lcd_powerdev = {
333         .name                   = "platform-lcd",
334         .dev.parent             = &s3c_device_lcd.dev,
335         .dev.platform_data      = &h1940_lcd_power_data,
336 };
337
338 static struct platform_device *h1940_devices[] __initdata = {
339         &s3c_device_ohci,
340         &s3c_device_lcd,
341         &s3c_device_wdt,
342         &s3c_device_i2c0,
343         &s3c_device_iis,
344         &s3c_device_usbgadget,
345         &h1940_device_leds,
346         &h1940_device_bluetooth,
347         &s3c_device_sdi,
348         &s3c_device_rtc,
349         &s3c_device_timer[0],
350         &h1940_backlight,
351         &h1940_lcd_powerdev,
352         &s3c_device_adc,
353         &s3c_device_ts,
354 };
355
356 static void __init h1940_map_io(void)
357 {
358         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
359         s3c24xx_init_clocks(0);
360         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
361
362         /* setup PM */
363
364 #ifdef CONFIG_PM_H1940
365         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
366 #endif
367         s3c_pm_init();
368
369         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
370 }
371
372 /* H1940 and RX3715 need to reserve this for suspend */
373 static void __init h1940_reserve(void)
374 {
375         memblock_reserve(0x30003000, 0x1000);
376         memblock_reserve(0x30081000, 0x1000);
377 }
378
379 static void __init h1940_init_irq(void)
380 {
381         s3c24xx_init_irq();
382 }
383
384 static void __init h1940_init(void)
385 {
386         u32 tmp;
387
388         s3c24xx_fb_set_platdata(&h1940_fb_info);
389         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
390         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
391         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
392         s3c_i2c0_set_platdata(NULL);
393
394         /* Turn off suspend on both USB ports, and switch the
395          * selectable USB port to USB device mode. */
396
397         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
398                               S3C2410_MISCCR_USBSUSPND0 |
399                               S3C2410_MISCCR_USBSUSPND1, 0x0);
400
401         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
402               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
403               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
404         writel(tmp, S3C2410_UPLLCON);
405
406         gpio_request(S3C2410_GPC(0), "LCD power");
407         gpio_request(S3C2410_GPC(5), "LCD power");
408         gpio_request(S3C2410_GPC(6), "LCD power");
409         gpio_direction_input(S3C2410_GPC(6));
410
411         gpio_request(H1940_LATCH_USB_DP, "USB pullup");
412         gpio_direction_output(H1940_LATCH_USB_DP, 0);
413
414         gpio_request(H1940_LATCH_SD_POWER, "SD power");
415         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
416
417         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
418 }
419
420 MACHINE_START(H1940, "IPAQ-H1940")
421         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
422         .phys_io        = S3C2410_PA_UART,
423         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
424         .boot_params    = S3C2410_SDRAM_PA + 0x100,
425         .map_io         = h1940_map_io,
426         .reserve        = h1940_reserve,
427         .init_irq       = h1940_init_irq,
428         .init_machine   = h1940_init,
429         .timer          = &s3c24xx_timer,
430 MACHINE_END