1 /*
2 * linux/arch/arm/mach-pxa/saar.c
3 *
4 * Support for the Marvell PXA930 Handheld Platform (aka SAAR)
5 *
6 * Copyright (C) 2007-2008 Marvell International Ltd.
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 * publishhed by the Free Software Foundation.
11 */
12
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/interrupt.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/clk.h>
19 #include <linux/gpio.h>
20 #include <linux/delay.h>
21 #include <linux/fb.h>
22 #include <linux/i2c.h>
23 #include <linux/smc91x.h>
24 #include <linux/mfd/da903x.h>
25
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <mach/hardware.h>
29 #include <mach/pxa3xx-regs.h>
30 #include <mach/mfp-pxa930.h>
31 #include <mach/i2c.h>
32 #include <mach/regs-lcd.h>
33 #include <mach/pxafb.h>
34
35 #include "devices.h"
36 #include "generic.h"
37
38 #define GPIO_LCD_RESET (16)
39
40 /* SAAR MFP configurations */
41 static mfp_cfg_t saar_mfp_cfg[] __initdata = {
42 /* LCD */
43 GPIO23_LCD_DD0,
44 GPIO24_LCD_DD1,
45 GPIO25_LCD_DD2,
46 GPIO26_LCD_DD3,
47 GPIO27_LCD_DD4,
48 GPIO28_LCD_DD5,
49 GPIO29_LCD_DD6,
50 GPIO44_LCD_DD7,
51 GPIO21_LCD_CS,
52 GPIO22_LCD_VSYNC,
53 GPIO17_LCD_FCLK_RD,
54 GPIO18_LCD_LCLK_A0,
55 GPIO19_LCD_PCLK_WR,
56 GPIO16_GPIO, /* LCD reset */
57
58 /* Ethernet */
59 DF_nCS1_nCS3,
60 GPIO97_GPIO,
61 };
62
63 #define SAAR_ETH_PHYS (0x14000000)
64
65 static struct resource smc91x_resources[] = {
66 [0] = {
67 .start = (SAAR_ETH_PHYS + 0x300),
68 .end = (SAAR_ETH_PHYS + 0xfffff),
69 .flags = IORESOURCE_MEM,
70 },
71 [1] = {
72 .start = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO97)),
73 .end = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO97)),
74 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
75 }
76 };
77
78 static struct smc91x_platdata saar_smc91x_info = {
79 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
80 };
81
82 static struct platform_device smc91x_device = {
83 .name = "smc91x",
84 .id = 0,
85 .num_resources = ARRAY_SIZE(smc91x_resources),
86 .resource = smc91x_resources,
87 .dev = {
88 .platform_data = &saar_smc91x_info,
89 },
90 };
91
92 #if defined(CONFIG_FB_PXA) || (CONFIG_FB_PXA_MODULE)
93 static uint16_t lcd_power_on[] = {
94 /* single frame */
95 SMART_CMD_NOOP,
96 SMART_CMD(0x00),
97 SMART_DELAY(0),
98
99 SMART_CMD_NOOP,
100 SMART_CMD(0x00),
101 SMART_DELAY(0),
102
103 SMART_CMD_NOOP,
104 SMART_CMD(0x00),
105 SMART_DELAY(0),
106
107 SMART_CMD_NOOP,
108 SMART_CMD(0x00),
109 SMART_DELAY(10),
110
111 /* calibration control */
112 SMART_CMD(0x00),
113 SMART_CMD(0xA4),
114 SMART_DAT(0x80),
115 SMART_DAT(0x01),
116 SMART_DELAY(150),
117
118 /*Power-On Init sequence*/
119 SMART_CMD(0x00), /* output ctrl */
120 SMART_CMD(0x01),
121 SMART_DAT(0x01),
122 SMART_DAT(0x00),
123 SMART_CMD(0x00), /* wave ctrl */
124 SMART_CMD(0x02),
125 SMART_DAT(0x07),
126 SMART_DAT(0x00),
127 SMART_CMD(0x00),
128 SMART_CMD(0x03), /* entry mode */
129 SMART_DAT(0xD0),
130 SMART_DAT(0x30),
131 SMART_CMD(0x00),
132 SMART_CMD(0x08), /* display ctrl 2 */
133 SMART_DAT(0x08),
134 SMART_DAT(0x08),
135 SMART_CMD(0x00),
136 SMART_CMD(0x09), /* display ctrl 3 */
137 SMART_DAT(0x04),
138 SMART_DAT(0x2F),
139 SMART_CMD(0x00),
140 SMART_CMD(0x0A), /* display ctrl 4 */
141 SMART_DAT(0x00),
142 SMART_DAT(0x08),
143 SMART_CMD(0x00),
144 SMART_CMD(0x0D), /* Frame Marker position */
145 SMART_DAT(0x00),
146 SMART_DAT(0x08),
147 SMART_CMD(0x00),
148 SMART_CMD(0x60), /* Driver output control */
149 SMART_DAT(0x27),
150 SMART_DAT(0x00),
151 SMART_CMD(0x00),
152 SMART_CMD(0x61), /* Base image display control */
153 SMART_DAT(0x00),
154 SMART_DAT(0x01),
155 SMART_CMD(0x00),
156 SMART_CMD(0x30), /* Y settings 30h-3Dh */
157 SMART_DAT(0x07),
158 SMART_DAT(0x07),
159 SMART_CMD(0x00),
160 SMART_CMD(0x31),
161 SMART_DAT(0x00),
162 SMART_DAT(0x07),
163 SMART_CMD(0x00),
164 SMART_CMD(0x32), /* Timing(3), ASW HOLD=0.5CLK */
165 SMART_DAT(0x04),
166 SMART_DAT(0x00),
167 SMART_CMD(0x00),
168 SMART_CMD(0x33), /* Timing(4), CKV ST=0CLK, CKV ED=1CLK */
169 SMART_DAT(0x03),
170 SMART_DAT(0x03),
171 SMART_CMD(0x00),
172 SMART_CMD(0x34),
173 SMART_DAT(0x00),
174 SMART_DAT(0x00),
175 SMART_CMD(0x00),
176 SMART_CMD(0x35),
177 SMART_DAT(0x02),
178 SMART_DAT(0x05),
179 SMART_CMD(0x00),
180 SMART_CMD(0x36),
181 SMART_DAT(0x1F),
182 SMART_DAT(0x1F),
183 SMART_CMD(0x00),
184 SMART_CMD(0x37),
185 SMART_DAT(0x07),
186 SMART_DAT(0x07),
187 SMART_CMD(0x00),
188 SMART_CMD(0x38),
189 SMART_DAT(0x00),
190 SMART_DAT(0x07),
191 SMART_CMD(0x00),
192 SMART_CMD(0x39),
193 SMART_DAT(0x04),
194 SMART_DAT(0x00),
195 SMART_CMD(0x00),
196 SMART_CMD(0x3A),
197 SMART_DAT(0x03),
198 SMART_DAT(0x03),
199 SMART_CMD(0x00),
200 SMART_CMD(0x3B),
201 SMART_DAT(0x00),
202 SMART_DAT(0x00),
203 SMART_CMD(0x00),
204 SMART_CMD(0x3C),
205 SMART_DAT(0x02),
206 SMART_DAT(0x05),
207 SMART_CMD(0x00),
208 SMART_CMD(0x3D),
209 SMART_DAT(0x1F),
210 SMART_DAT(0x1F),
211 SMART_CMD(0x00), /* Display control 1 */
212 SMART_CMD(0x07),
213 SMART_DAT(0x00),
214 SMART_DAT(0x01),
215 SMART_CMD(0x00), /* Power control 5 */
216 SMART_CMD(0x17),
217 SMART_DAT(0x00),
218 SMART_DAT(0x01),
219 SMART_CMD(0x00), /* Power control 1 */
220 SMART_CMD(0x10),
221 SMART_DAT(0x10),
222 SMART_DAT(0xB0),
223 SMART_CMD(0x00), /* Power control 2 */
224 SMART_CMD(0x11),
225 SMART_DAT(0x01),
226 SMART_DAT(0x30),
227 SMART_CMD(0x00), /* Power control 3 */
228 SMART_CMD(0x12),
229 SMART_DAT(0x01),
230 SMART_DAT(0x9E),
231 SMART_CMD(0x00), /* Power control 4 */
232 SMART_CMD(0x13),
233 SMART_DAT(0x17),
234 SMART_DAT(0x00),
235 SMART_CMD(0x00), /* Power control 3 */
236 SMART_CMD(0x12),
237 SMART_DAT(0x01),
238 SMART_DAT(0xBE),
239 SMART_DELAY(100),
240
241 /* display mode : 240*320 */
242 SMART_CMD(0x00), /* RAM address set(H) 0*/
243 SMART_CMD(0x20),
244 SMART_DAT(0x00),
245 SMART_DAT(0x00),
246 SMART_CMD(0x00), /* RAM address set(V) 4*/
247 SMART_CMD(0x21),
248 SMART_DAT(0x00),
249 SMART_DAT(0x00),
250 SMART_CMD(0x00), /* Start of Window RAM address set(H) 8*/
251 SMART_CMD(0x50),
252 SMART_DAT(0x00),
253 SMART_DAT(0x00),
254 SMART_CMD(0x00), /* End of Window RAM address set(H) 12*/
255 SMART_CMD(0x51),
256 SMART_DAT(0x00),
257 SMART_DAT(0xEF),
258 SMART_CMD(0x00), /* Start of Window RAM address set(V) 16*/
259 SMART_CMD(0x52),
260 SMART_DAT(0x00),
261 SMART_DAT(0x00),
262 SMART_CMD(0x00), /* End of Window RAM address set(V) 20*/
263 SMART_CMD(0x53),
264 SMART_DAT(0x01),
265 SMART_DAT(0x3F),
266 SMART_CMD(0x00), /* Panel interface control 1 */
267 SMART_CMD(0x90),
268 SMART_DAT(0x00),
269 SMART_DAT(0x1A),
270 SMART_CMD(0x00), /* Panel interface control 2 */
271 SMART_CMD(0x92),
272 SMART_DAT(0x04),
273 SMART_DAT(0x00),
274 SMART_CMD(0x00), /* Panel interface control 3 */
275 SMART_CMD(0x93),
276 SMART_DAT(0x00),
277 SMART_DAT(0x05),
278 SMART_DELAY(20),
279 };
280
281 static uint16_t lcd_panel_on[] = {
282 SMART_CMD(0x00),
283 SMART_CMD(0x07),
284 SMART_DAT(0x00),
285 SMART_DAT(0x21),
286 SMART_DELAY(1),
287
288 SMART_CMD(0x00),
289 SMART_CMD(0x07),
290 SMART_DAT(0x00),
291 SMART_DAT(0x61),
292 SMART_DELAY(100),
293
294 SMART_CMD(0x00),
295 SMART_CMD(0x07),
296 SMART_DAT(0x01),
297 SMART_DAT(0x73),
298 SMART_DELAY(1),
299 };
300
301 static uint16_t lcd_panel_off[] = {
302 SMART_CMD(0x00),
303 SMART_CMD(0x07),
304 SMART_DAT(0x00),
305 SMART_DAT(0x72),
306 SMART_DELAY(40),
307
308 SMART_CMD(0x00),
309 SMART_CMD(0x07),
310 SMART_DAT(0x00),
311 SMART_DAT(0x01),
312 SMART_DELAY(1),
313
314 SMART_CMD(0x00),
315 SMART_CMD(0x07),
316 SMART_DAT(0x00),
317 SMART_DAT(0x00),
318 SMART_DELAY(1),
319 };
320
321 static uint16_t lcd_power_off[] = {
322 SMART_CMD(0x00),
323 SMART_CMD(0x10),
324 SMART_DAT(0x00),
325 SMART_DAT(0x80),
326
327 SMART_CMD(0x00),
328 SMART_CMD(0x11),
329 SMART_DAT(0x01),
330 SMART_DAT(0x60),
331
332 SMART_CMD(0x00),
333 SMART_CMD(0x12),
334 SMART_DAT(0x01),
335 SMART_DAT(0xAE),
336 SMART_DELAY(40),
337
338 SMART_CMD(0x00),
339 SMART_CMD(0x10),
340 SMART_DAT(0x00),
341 SMART_DAT(0x00),
342 };
343
344 static uint16_t update_framedata[] = {
345 /* set display ram: 240*320 */
346 SMART_CMD(0x00), /* RAM address set(H) 0*/
347 SMART_CMD(0x20),
348 SMART_DAT(0x00),
349 SMART_DAT(0x00),
350 SMART_CMD(0x00), /* RAM address set(V) 4*/
351 SMART_CMD(0x21),
352 SMART_DAT(0x00),
353 SMART_DAT(0x00),
354 SMART_CMD(0x00), /* Start of Window RAM address set(H) 8 */
355 SMART_CMD(0x50),
356 SMART_DAT(0x00),
357 SMART_DAT(0x00),
358 SMART_CMD(0x00), /* End of Window RAM address set(H) 12 */
359 SMART_CMD(0x51),
360 SMART_DAT(0x00),
361 SMART_DAT(0xEF),
362 SMART_CMD(0x00), /* Start of Window RAM address set(V) 16 */
363 SMART_CMD(0x52),
364 SMART_DAT(0x00),
365 SMART_DAT(0x00),
366 SMART_CMD(0x00), /* End of Window RAM address set(V) 20 */
367 SMART_CMD(0x53),
368 SMART_DAT(0x01),
369 SMART_DAT(0x3F),
370
371 /* wait for vsync cmd before transferring frame data */
372 SMART_CMD_WAIT_FOR_VSYNC,
373
374 /* write ram */
375 SMART_CMD(0x00),
376 SMART_CMD(0x22),
377
378 /* write frame data */
379 SMART_CMD_WRITE_FRAME,
380 };
381
ltm022a97a_lcd_power(int on,struct fb_var_screeninfo * var)382 static void ltm022a97a_lcd_power(int on, struct fb_var_screeninfo *var)
383 {
384 static int pin_requested = 0;
385 struct fb_info *info = container_of(var, struct fb_info, var);
386 int err;
387
388 if (!pin_requested) {
389 err = gpio_request(GPIO_LCD_RESET, "lcd reset");
390 if (err) {
391 pr_err("failed to request gpio for LCD reset\n");
392 return;
393 }
394
395 gpio_direction_output(GPIO_LCD_RESET, 0);
396 pin_requested = 1;
397 }
398
399 if (on) {
400 gpio_set_value(GPIO_LCD_RESET, 0); msleep(100);
401 gpio_set_value(GPIO_LCD_RESET, 1); msleep(10);
402
403 pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_power_on));
404 pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_panel_on));
405 } else {
406 pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_panel_off));
407 pxafb_smart_queue(info, ARRAY_AND_SIZE(lcd_power_off));
408 }
409
410 err = pxafb_smart_flush(info);
411 if (err)
412 pr_err("%s: timed out\n", __func__);
413 }
414
ltm022a97a_update(struct fb_info * info)415 static void ltm022a97a_update(struct fb_info *info)
416 {
417 pxafb_smart_queue(info, ARRAY_AND_SIZE(update_framedata));
418 pxafb_smart_flush(info);
419 }
420
421 static struct pxafb_mode_info toshiba_ltm022a97a_modes[] = {
422 [0] = {
423 .xres = 240,
424 .yres = 320,
425 .bpp = 16,
426 .a0csrd_set_hld = 30,
427 .a0cswr_set_hld = 30,
428 .wr_pulse_width = 30,
429 .rd_pulse_width = 30,
430 .op_hold_time = 30,
431 .cmd_inh_time = 60,
432
433 /* L_LCLK_A0 and L_LCLK_RD active low */
434 .sync = FB_SYNC_HOR_HIGH_ACT |
435 FB_SYNC_VERT_HIGH_ACT,
436 },
437 };
438
439 static struct pxafb_mach_info saar_lcd_info = {
440 .modes = toshiba_ltm022a97a_modes,
441 .num_modes = 1,
442 .lcd_conn = LCD_SMART_PANEL_8BPP | LCD_PCLK_EDGE_FALL,
443 .pxafb_lcd_power = ltm022a97a_lcd_power,
444 .smart_update = ltm022a97a_update,
445 };
446
saar_init_lcd(void)447 static void __init saar_init_lcd(void)
448 {
449 set_pxa_fb_info(&saar_lcd_info);
450 }
451 #else
saar_init_lcd(void)452 static inline void saar_init_lcd(void) {}
453 #endif
454
455 #if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
456 static struct da903x_subdev_info saar_da9034_subdevs[] = {
457 [0] = {
458 .name = "da903x-backlight",
459 .id = DA9034_ID_WLED,
460 },
461 };
462
463 static struct da903x_platform_data saar_da9034_info = {
464 .num_subdevs = ARRAY_SIZE(saar_da9034_subdevs),
465 .subdevs = saar_da9034_subdevs,
466 };
467
468 static struct i2c_board_info saar_i2c_info[] = {
469 [0] = {
470 .type = "da9034",
471 .addr = 0x34,
472 .platform_data = &saar_da9034_info,
473 .irq = gpio_to_irq(mfp_to_gpio(MFP_PIN_GPIO83)),
474 },
475 };
476
saar_init_i2c(void)477 static void __init saar_init_i2c(void)
478 {
479 pxa_set_i2c_info(NULL);
480 i2c_register_board_info(0, ARRAY_AND_SIZE(saar_i2c_info));
481 }
482 #else
saar_init_i2c(void)483 static inline void saar_init_i2c(void) {}
484 #endif
saar_init(void)485 static void __init saar_init(void)
486 {
487 /* initialize MFP configurations */
488 pxa3xx_mfp_config(ARRAY_AND_SIZE(saar_mfp_cfg));
489
490 platform_device_register(&smc91x_device);
491
492 saar_init_i2c();
493 saar_init_lcd();
494 }
495
496 MACHINE_START(SAAR, "PXA930 Handheld Platform (aka SAAR)")
497 /* Maintainer: Eric Miao <eric.miao@marvell.com> */
498 .phys_io = 0x40000000,
499 .boot_params = 0xa0000100,
500 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
501 .map_io = pxa_map_io,
502 .init_irq = pxa3xx_init_irq,
503 .timer = &pxa_timer,
504 .init_machine = saar_init,
505 MACHINE_END
506