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[ARM] 3455/1: ARM: OMAP: 7/8 Misc updates, take 2
[deliverable/linux.git] / arch / arm / mach-pxa / corgi_lcd.c
1 /*
2 * linux/drivers/video/w100fb.c
3 *
4 * Corgi/Spitz LCD Specific Code
5 *
6 * Copyright (C) 2005 Richard Purdie
7 *
8 * Connectivity:
9 * Corgi - LCD to ATI Imageon w100 (Wallaby)
10 * Spitz - LCD to PXA Framebuffer
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 */
17
18 #include <linux/delay.h>
19 #include <linux/kernel.h>
20 #include <linux/platform_device.h>
21 #include <linux/module.h>
22 #include <linux/string.h>
23 #include <asm/arch/akita.h>
24 #include <asm/arch/corgi.h>
25 #include <asm/hardware.h>
26 #include <asm/arch/pxa-regs.h>
27 #include <asm/arch/sharpsl.h>
28 #include <asm/arch/spitz.h>
29 #include <asm/hardware/scoop.h>
30 #include <asm/mach/sharpsl_param.h>
31 #include "generic.h"
32
33 /* Register Addresses */
34 #define RESCTL_ADRS 0x00
35 #define PHACTRL_ADRS 0x01
36 #define DUTYCTRL_ADRS 0x02
37 #define POWERREG0_ADRS 0x03
38 #define POWERREG1_ADRS 0x04
39 #define GPOR3_ADRS 0x05
40 #define PICTRL_ADRS 0x06
41 #define POLCTRL_ADRS 0x07
42
43 /* Resgister Bit Definitions */
44 #define RESCTL_QVGA 0x01
45 #define RESCTL_VGA 0x00
46
47 #define POWER1_VW_ON 0x01 /* VW Supply FET ON */
48 #define POWER1_GVSS_ON 0x02 /* GVSS(-8V) Power Supply ON */
49 #define POWER1_VDD_ON 0x04 /* VDD(8V),SVSS(-4V) Power Supply ON */
50
51 #define POWER1_VW_OFF 0x00 /* VW Supply FET OFF */
52 #define POWER1_GVSS_OFF 0x00 /* GVSS(-8V) Power Supply OFF */
53 #define POWER1_VDD_OFF 0x00 /* VDD(8V),SVSS(-4V) Power Supply OFF */
54
55 #define POWER0_COM_DCLK 0x01 /* COM Voltage DC Bias DAC Serial Data Clock */
56 #define POWER0_COM_DOUT 0x02 /* COM Voltage DC Bias DAC Serial Data Out */
57 #define POWER0_DAC_ON 0x04 /* DAC Power Supply ON */
58 #define POWER0_COM_ON 0x08 /* COM Powewr Supply ON */
59 #define POWER0_VCC5_ON 0x10 /* VCC5 Power Supply ON */
60
61 #define POWER0_DAC_OFF 0x00 /* DAC Power Supply OFF */
62 #define POWER0_COM_OFF 0x00 /* COM Powewr Supply OFF */
63 #define POWER0_VCC5_OFF 0x00 /* VCC5 Power Supply OFF */
64
65 #define PICTRL_INIT_STATE 0x01
66 #define PICTRL_INIOFF 0x02
67 #define PICTRL_POWER_DOWN 0x04
68 #define PICTRL_COM_SIGNAL_OFF 0x08
69 #define PICTRL_DAC_SIGNAL_OFF 0x10
70
71 #define POLCTRL_SYNC_POL_FALL 0x01
72 #define POLCTRL_EN_POL_FALL 0x02
73 #define POLCTRL_DATA_POL_FALL 0x04
74 #define POLCTRL_SYNC_ACT_H 0x08
75 #define POLCTRL_EN_ACT_L 0x10
76
77 #define POLCTRL_SYNC_POL_RISE 0x00
78 #define POLCTRL_EN_POL_RISE 0x00
79 #define POLCTRL_DATA_POL_RISE 0x00
80 #define POLCTRL_SYNC_ACT_L 0x00
81 #define POLCTRL_EN_ACT_H 0x00
82
83 #define PHACTRL_PHASE_MANUAL 0x01
84 #define DEFAULT_PHAD_QVGA (9)
85 #define DEFAULT_COMADJ (125)
86
87 /*
88 * This is only a psuedo I2C interface. We can't use the standard kernel
89 * routines as the interface is write only. We just assume the data is acked...
90 */
91 static void lcdtg_ssp_i2c_send(u8 data)
92 {
93 corgi_ssp_lcdtg_send(POWERREG0_ADRS, data);
94 udelay(10);
95 }
96
97 static void lcdtg_i2c_send_bit(u8 data)
98 {
99 lcdtg_ssp_i2c_send(data);
100 lcdtg_ssp_i2c_send(data | POWER0_COM_DCLK);
101 lcdtg_ssp_i2c_send(data);
102 }
103
104 static void lcdtg_i2c_send_start(u8 base)
105 {
106 lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK | POWER0_COM_DOUT);
107 lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK);
108 lcdtg_ssp_i2c_send(base);
109 }
110
111 static void lcdtg_i2c_send_stop(u8 base)
112 {
113 lcdtg_ssp_i2c_send(base);
114 lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK);
115 lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK | POWER0_COM_DOUT);
116 }
117
118 static void lcdtg_i2c_send_byte(u8 base, u8 data)
119 {
120 int i;
121 for (i = 0; i < 8; i++) {
122 if (data & 0x80)
123 lcdtg_i2c_send_bit(base | POWER0_COM_DOUT);
124 else
125 lcdtg_i2c_send_bit(base);
126 data <<= 1;
127 }
128 }
129
130 static void lcdtg_i2c_wait_ack(u8 base)
131 {
132 lcdtg_i2c_send_bit(base);
133 }
134
135 static void lcdtg_set_common_voltage(u8 base_data, u8 data)
136 {
137 /* Set Common Voltage to M62332FP via I2C */
138 lcdtg_i2c_send_start(base_data);
139 lcdtg_i2c_send_byte(base_data, 0x9c);
140 lcdtg_i2c_wait_ack(base_data);
141 lcdtg_i2c_send_byte(base_data, 0x00);
142 lcdtg_i2c_wait_ack(base_data);
143 lcdtg_i2c_send_byte(base_data, data);
144 lcdtg_i2c_wait_ack(base_data);
145 lcdtg_i2c_send_stop(base_data);
146 }
147
148 /* Set Phase Adjuct */
149 static void lcdtg_set_phadadj(int mode)
150 {
151 int adj;
152 switch(mode) {
153 case 480:
154 case 640:
155 /* Setting for VGA */
156 adj = sharpsl_param.phadadj;
157 if (adj < 0) {
158 adj = PHACTRL_PHASE_MANUAL;
159 } else {
160 adj = ((adj & 0x0f) << 1) | PHACTRL_PHASE_MANUAL;
161 }
162 break;
163 case 240:
164 case 320:
165 default:
166 /* Setting for QVGA */
167 adj = (DEFAULT_PHAD_QVGA << 1) | PHACTRL_PHASE_MANUAL;
168 break;
169 }
170
171 corgi_ssp_lcdtg_send(PHACTRL_ADRS, adj);
172 }
173
174 static int lcd_inited;
175
176 static void lcdtg_hw_init(int mode)
177 {
178 if (!lcd_inited) {
179 int comadj;
180
181 /* Initialize Internal Logic & Port */
182 corgi_ssp_lcdtg_send(PICTRL_ADRS, PICTRL_POWER_DOWN | PICTRL_INIOFF | PICTRL_INIT_STATE
183 | PICTRL_COM_SIGNAL_OFF | PICTRL_DAC_SIGNAL_OFF);
184
185 corgi_ssp_lcdtg_send(POWERREG0_ADRS, POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_OFF
186 | POWER0_COM_OFF | POWER0_VCC5_OFF);
187
188 corgi_ssp_lcdtg_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_OFF);
189
190 /* VDD(+8V), SVSS(-4V) ON */
191 corgi_ssp_lcdtg_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_ON);
192 mdelay(3);
193
194 /* DAC ON */
195 corgi_ssp_lcdtg_send(POWERREG0_ADRS, POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON
196 | POWER0_COM_OFF | POWER0_VCC5_OFF);
197
198 /* INIB = H, INI = L */
199 /* PICTL[0] = H , PICTL[1] = PICTL[2] = PICTL[4] = L */
200 corgi_ssp_lcdtg_send(PICTRL_ADRS, PICTRL_INIT_STATE | PICTRL_COM_SIGNAL_OFF);
201
202 /* Set Common Voltage */
203 comadj = sharpsl_param.comadj;
204 if (comadj < 0)
205 comadj = DEFAULT_COMADJ;
206 lcdtg_set_common_voltage((POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_OFF), comadj);
207
208 /* VCC5 ON, DAC ON */
209 corgi_ssp_lcdtg_send(POWERREG0_ADRS, POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON |
210 POWER0_COM_OFF | POWER0_VCC5_ON);
211
212 /* GVSS(-8V) ON, VDD ON */
213 corgi_ssp_lcdtg_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_ON | POWER1_VDD_ON);
214 mdelay(2);
215
216 /* COM SIGNAL ON (PICTL[3] = L) */
217 corgi_ssp_lcdtg_send(PICTRL_ADRS, PICTRL_INIT_STATE);
218
219 /* COM ON, DAC ON, VCC5_ON */
220 corgi_ssp_lcdtg_send(POWERREG0_ADRS, POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON
221 | POWER0_COM_ON | POWER0_VCC5_ON);
222
223 /* VW ON, GVSS ON, VDD ON */
224 corgi_ssp_lcdtg_send(POWERREG1_ADRS, POWER1_VW_ON | POWER1_GVSS_ON | POWER1_VDD_ON);
225
226 /* Signals output enable */
227 corgi_ssp_lcdtg_send(PICTRL_ADRS, 0);
228
229 /* Set Phase Adjuct */
230 lcdtg_set_phadadj(mode);
231
232 /* Initialize for Input Signals from ATI */
233 corgi_ssp_lcdtg_send(POLCTRL_ADRS, POLCTRL_SYNC_POL_RISE | POLCTRL_EN_POL_RISE
234 | POLCTRL_DATA_POL_RISE | POLCTRL_SYNC_ACT_L | POLCTRL_EN_ACT_H);
235 udelay(1000);
236
237 lcd_inited=1;
238 } else {
239 lcdtg_set_phadadj(mode);
240 }
241
242 switch(mode) {
243 case 480:
244 case 640:
245 /* Set Lcd Resolution (VGA) */
246 corgi_ssp_lcdtg_send(RESCTL_ADRS, RESCTL_VGA);
247 break;
248 case 240:
249 case 320:
250 default:
251 /* Set Lcd Resolution (QVGA) */
252 corgi_ssp_lcdtg_send(RESCTL_ADRS, RESCTL_QVGA);
253 break;
254 }
255 }
256
257 static void lcdtg_suspend(void)
258 {
259 /* 60Hz x 2 frame = 16.7msec x 2 = 33.4 msec */
260 mdelay(34);
261
262 /* (1)VW OFF */
263 corgi_ssp_lcdtg_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_ON | POWER1_VDD_ON);
264
265 /* (2)COM OFF */
266 corgi_ssp_lcdtg_send(PICTRL_ADRS, PICTRL_COM_SIGNAL_OFF);
267 corgi_ssp_lcdtg_send(POWERREG0_ADRS, POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_ON);
268
269 /* (3)Set Common Voltage Bias 0V */
270 lcdtg_set_common_voltage(POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_ON, 0);
271
272 /* (4)GVSS OFF */
273 corgi_ssp_lcdtg_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_ON);
274
275 /* (5)VCC5 OFF */
276 corgi_ssp_lcdtg_send(POWERREG0_ADRS, POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_OFF);
277
278 /* (6)Set PDWN, INIOFF, DACOFF */
279 corgi_ssp_lcdtg_send(PICTRL_ADRS, PICTRL_INIOFF | PICTRL_DAC_SIGNAL_OFF |
280 PICTRL_POWER_DOWN | PICTRL_COM_SIGNAL_OFF);
281
282 /* (7)DAC OFF */
283 corgi_ssp_lcdtg_send(POWERREG0_ADRS, POWER0_DAC_OFF | POWER0_COM_OFF | POWER0_VCC5_OFF);
284
285 /* (8)VDD OFF */
286 corgi_ssp_lcdtg_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_OFF);
287
288 lcd_inited = 0;
289 }
290
291
292 /*
293 * Corgi w100 Frame Buffer Device
294 */
295 #ifdef CONFIG_PXA_SHARP_C7xx
296
297 #include <video/w100fb.h>
298
299 static void w100_lcdtg_suspend(struct w100fb_par *par)
300 {
301 lcdtg_suspend();
302 }
303
304 static void w100_lcdtg_init(struct w100fb_par *par)
305 {
306 lcdtg_hw_init(par->xres);
307 }
308
309
310 static struct w100_tg_info corgi_lcdtg_info = {
311 .change = w100_lcdtg_init,
312 .suspend = w100_lcdtg_suspend,
313 .resume = w100_lcdtg_init,
314 };
315
316 static struct w100_mem_info corgi_fb_mem = {
317 .ext_cntl = 0x00040003,
318 .sdram_mode_reg = 0x00650021,
319 .ext_timing_cntl = 0x10002a4a,
320 .io_cntl = 0x7ff87012,
321 .size = 0x1fffff,
322 };
323
324 static struct w100_gen_regs corgi_fb_regs = {
325 .lcd_format = 0x00000003,
326 .lcdd_cntl1 = 0x01CC0000,
327 .lcdd_cntl2 = 0x0003FFFF,
328 .genlcd_cntl1 = 0x00FFFF0D,
329 .genlcd_cntl2 = 0x003F3003,
330 .genlcd_cntl3 = 0x000102aa,
331 };
332
333 static struct w100_gpio_regs corgi_fb_gpio = {
334 .init_data1 = 0x000000bf,
335 .init_data2 = 0x00000000,
336 .gpio_dir1 = 0x00000000,
337 .gpio_oe1 = 0x03c0feff,
338 .gpio_dir2 = 0x00000000,
339 .gpio_oe2 = 0x00000000,
340 };
341
342 static struct w100_mode corgi_fb_modes[] = {
343 {
344 .xres = 480,
345 .yres = 640,
346 .left_margin = 0x56,
347 .right_margin = 0x55,
348 .upper_margin = 0x03,
349 .lower_margin = 0x00,
350 .crtc_ss = 0x82360056,
351 .crtc_ls = 0xA0280000,
352 .crtc_gs = 0x80280028,
353 .crtc_vpos_gs = 0x02830002,
354 .crtc_rev = 0x00400008,
355 .crtc_dclk = 0xA0000000,
356 .crtc_gclk = 0x8015010F,
357 .crtc_goe = 0x80100110,
358 .crtc_ps1_active = 0x41060010,
359 .pll_freq = 75,
360 .fast_pll_freq = 100,
361 .sysclk_src = CLK_SRC_PLL,
362 .sysclk_divider = 0,
363 .pixclk_src = CLK_SRC_PLL,
364 .pixclk_divider = 2,
365 .pixclk_divider_rotated = 6,
366 },{
367 .xres = 240,
368 .yres = 320,
369 .left_margin = 0x27,
370 .right_margin = 0x2e,
371 .upper_margin = 0x01,
372 .lower_margin = 0x00,
373 .crtc_ss = 0x81170027,
374 .crtc_ls = 0xA0140000,
375 .crtc_gs = 0xC0140014,
376 .crtc_vpos_gs = 0x00010141,
377 .crtc_rev = 0x00400008,
378 .crtc_dclk = 0xA0000000,
379 .crtc_gclk = 0x8015010F,
380 .crtc_goe = 0x80100110,
381 .crtc_ps1_active = 0x41060010,
382 .pll_freq = 0,
383 .fast_pll_freq = 0,
384 .sysclk_src = CLK_SRC_XTAL,
385 .sysclk_divider = 0,
386 .pixclk_src = CLK_SRC_XTAL,
387 .pixclk_divider = 1,
388 .pixclk_divider_rotated = 1,
389 },
390
391 };
392
393 static struct w100fb_mach_info corgi_fb_info = {
394 .tg = &corgi_lcdtg_info,
395 .init_mode = INIT_MODE_ROTATED,
396 .mem = &corgi_fb_mem,
397 .regs = &corgi_fb_regs,
398 .modelist = &corgi_fb_modes[0],
399 .num_modes = 2,
400 .gpio = &corgi_fb_gpio,
401 .xtal_freq = 12500000,
402 .xtal_dbl = 0,
403 };
404
405 static struct resource corgi_fb_resources[] = {
406 [0] = {
407 .start = 0x08000000,
408 .end = 0x08ffffff,
409 .flags = IORESOURCE_MEM,
410 },
411 };
412
413 struct platform_device corgifb_device = {
414 .name = "w100fb",
415 .id = -1,
416 .num_resources = ARRAY_SIZE(corgi_fb_resources),
417 .resource = corgi_fb_resources,
418 .dev = {
419 .platform_data = &corgi_fb_info,
420 .parent = &corgissp_device.dev,
421 },
422
423 };
424 #endif
425
426
427 /*
428 * Spitz PXA Frame Buffer Device
429 */
430 #ifdef CONFIG_PXA_SHARP_Cxx00
431
432 #include <asm/arch/pxafb.h>
433
434 void spitz_lcd_power(int on)
435 {
436 if (on)
437 lcdtg_hw_init(480);
438 else
439 lcdtg_suspend();
440 }
441
442 #endif
443
444
445 /*
446 * Corgi/Spitz Touchscreen to LCD interface
447 */
448 static unsigned long (*get_hsync_time)(struct device *dev);
449
450 static void inline sharpsl_wait_sync(int gpio)
451 {
452 while((GPLR(gpio) & GPIO_bit(gpio)) == 0);
453 while((GPLR(gpio) & GPIO_bit(gpio)) != 0);
454 }
455
456 #ifdef CONFIG_PXA_SHARP_C7xx
457 unsigned long corgi_get_hsync_len(void)
458 {
459 if (!get_hsync_time)
460 get_hsync_time = symbol_get(w100fb_get_hsynclen);
461 if (!get_hsync_time)
462 return 0;
463
464 return get_hsync_time(&corgifb_device.dev);
465 }
466
467 void corgi_put_hsync(void)
468 {
469 if (get_hsync_time)
470 symbol_put(w100fb_get_hsynclen);
471 get_hsync_time = NULL;
472 }
473
474 void corgi_wait_hsync(void)
475 {
476 sharpsl_wait_sync(CORGI_GPIO_HSYNC);
477 }
478 #endif
479
480 #ifdef CONFIG_PXA_SHARP_Cxx00
481 static struct device *spitz_pxafb_dev;
482
483 static int is_pxafb_device(struct device * dev, void * data)
484 {
485 struct platform_device *pdev = container_of(dev, struct platform_device, dev);
486
487 return (strncmp(pdev->name, "pxa2xx-fb", 9) == 0);
488 }
489
490 unsigned long spitz_get_hsync_len(void)
491 {
492 #ifdef CONFIG_FB_PXA
493 if (!spitz_pxafb_dev) {
494 spitz_pxafb_dev = bus_find_device(&platform_bus_type, NULL, NULL, is_pxafb_device);
495 if (!spitz_pxafb_dev)
496 return 0;
497 }
498 if (!get_hsync_time)
499 get_hsync_time = symbol_get(pxafb_get_hsync_time);
500 if (!get_hsync_time)
501 #endif
502 return 0;
503
504 return pxafb_get_hsync_time(spitz_pxafb_dev);
505 }
506
507 void spitz_put_hsync(void)
508 {
509 put_device(spitz_pxafb_dev);
510 if (get_hsync_time)
511 symbol_put(pxafb_get_hsync_time);
512 spitz_pxafb_dev = NULL;
513 get_hsync_time = NULL;
514 }
515
516 void spitz_wait_hsync(void)
517 {
518 sharpsl_wait_sync(SPITZ_GPIO_HSYNC);
519 }
520 #endif
521
522 /*
523 * Corgi/Spitz Backlight Power
524 */
525 #ifdef CONFIG_PXA_SHARP_C7xx
526 void corgi_bl_set_intensity(int intensity)
527 {
528 if (intensity > 0x10)
529 intensity += 0x10;
530
531 /* Bits 0-4 are accessed via the SSP interface */
532 corgi_ssp_blduty_set(intensity & 0x1f);
533
534 /* Bit 5 is via SCOOP */
535 if (intensity & 0x0020)
536 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT);
537 else
538 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT);
539 }
540 #endif
541
542
543 #if defined(CONFIG_MACH_SPITZ) || defined(CONFIG_MACH_BORZOI)
544 void spitz_bl_set_intensity(int intensity)
545 {
546 if (intensity > 0x10)
547 intensity += 0x10;
548
549 /* Bits 0-4 are accessed via the SSP interface */
550 corgi_ssp_blduty_set(intensity & 0x1f);
551
552 /* Bit 5 is via SCOOP */
553 if (intensity & 0x0020)
554 reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_CONT);
555 else
556 set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_CONT);
557
558 if (intensity)
559 set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_ON);
560 else
561 reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_ON);
562 }
563 #endif
564
565 #ifdef CONFIG_MACH_AKITA
566 void akita_bl_set_intensity(int intensity)
567 {
568 if (intensity > 0x10)
569 intensity += 0x10;
570
571 /* Bits 0-4 are accessed via the SSP interface */
572 corgi_ssp_blduty_set(intensity & 0x1f);
573
574 /* Bit 5 is via IO-Expander */
575 if (intensity & 0x0020)
576 akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);
577 else
578 akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);
579
580 if (intensity)
581 akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
582 else
583 akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
584 }
585 #endif
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