backlight: Convert corgi backlight driver into a more generic driver
[linux-2.6.git] / arch / arm / mach-pxa / spitz.c
1 /*
2  * Support for Sharp SL-Cxx00 Series of PDAs
3  * Models: SL-C3000 (Spitz), SL-C1000 (Akita) and SL-C3100 (Borzoi)
4  *
5  * Copyright (c) 2005 Richard Purdie
6  *
7  * Based on Sharp's 2.4 kernel patches/lubbock.c
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  *
13  */
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/delay.h>
19 #include <linux/major.h>
20 #include <linux/fs.h>
21 #include <linux/interrupt.h>
22 #include <linux/mmc/host.h>
23 #include <linux/pm.h>
24 #include <linux/backlight.h>
25
26 #include <asm/setup.h>
27 #include <asm/memory.h>
28 #include <asm/mach-types.h>
29 #include <asm/hardware.h>
30 #include <asm/irq.h>
31 #include <asm/io.h>
32 #include <asm/system.h>
33
34 #include <asm/mach/arch.h>
35 #include <asm/mach/map.h>
36 #include <asm/mach/irq.h>
37
38 #include <asm/arch/pxa-regs.h>
39 #include <asm/arch/irda.h>
40 #include <asm/arch/mmc.h>
41 #include <asm/arch/ohci.h>
42 #include <asm/arch/udc.h>
43 #include <asm/arch/pxafb.h>
44 #include <asm/arch/akita.h>
45 #include <asm/arch/spitz.h>
46 #include <asm/arch/sharpsl.h>
47
48 #include <asm/mach/sharpsl_param.h>
49 #include <asm/hardware/scoop.h>
50
51 #include "generic.h"
52 #include "devices.h"
53 #include "sharpsl.h"
54
55 /*
56  * Spitz SCOOP Device #1
57  */
58 static struct resource spitz_scoop_resources[] = {
59         [0] = {
60                 .start          = 0x10800000,
61                 .end            = 0x10800fff,
62                 .flags          = IORESOURCE_MEM,
63         },
64 };
65
66 static struct scoop_config spitz_scoop_setup = {
67         .io_dir         = SPITZ_SCP_IO_DIR,
68         .io_out         = SPITZ_SCP_IO_OUT,
69         .suspend_clr = SPITZ_SCP_SUS_CLR,
70         .suspend_set = SPITZ_SCP_SUS_SET,
71 };
72
73 struct platform_device spitzscoop_device = {
74         .name           = "sharp-scoop",
75         .id             = 0,
76         .dev            = {
77                 .platform_data  = &spitz_scoop_setup,
78         },
79         .num_resources  = ARRAY_SIZE(spitz_scoop_resources),
80         .resource       = spitz_scoop_resources,
81 };
82
83 /*
84  * Spitz SCOOP Device #2
85  */
86 static struct resource spitz_scoop2_resources[] = {
87         [0] = {
88                 .start          = 0x08800040,
89                 .end            = 0x08800fff,
90                 .flags          = IORESOURCE_MEM,
91         },
92 };
93
94 static struct scoop_config spitz_scoop2_setup = {
95         .io_dir         = SPITZ_SCP2_IO_DIR,
96         .io_out         = SPITZ_SCP2_IO_OUT,
97         .suspend_clr = SPITZ_SCP2_SUS_CLR,
98         .suspend_set = SPITZ_SCP2_SUS_SET,
99 };
100
101 struct platform_device spitzscoop2_device = {
102         .name           = "sharp-scoop",
103         .id             = 1,
104         .dev            = {
105                 .platform_data  = &spitz_scoop2_setup,
106         },
107         .num_resources  = ARRAY_SIZE(spitz_scoop2_resources),
108         .resource       = spitz_scoop2_resources,
109 };
110
111 #define SPITZ_PWR_SD 0x01
112 #define SPITZ_PWR_CF 0x02
113
114 /* Power control is shared with between one of the CF slots and SD */
115 static void spitz_card_pwr_ctrl(int device, unsigned short new_cpr)
116 {
117         unsigned short cpr = read_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR);
118
119         if (new_cpr & 0x0007) {
120                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER);
121                 if (!(cpr & 0x0002) && !(cpr & 0x0004))
122                         mdelay(5);
123                 if (device == SPITZ_PWR_CF)
124                         cpr |= 0x0002;
125                 if (device == SPITZ_PWR_SD)
126                         cpr |= 0x0004;
127                 write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr);
128         } else {
129                 if (device == SPITZ_PWR_CF)
130                         cpr &= ~0x0002;
131                 if (device == SPITZ_PWR_SD)
132                         cpr &= ~0x0004;
133                 if (!(cpr & 0x0002) && !(cpr & 0x0004)) {
134                         write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, 0x0000);
135                         mdelay(1);
136                         reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER);
137                 } else {
138                         write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr);
139                 }
140         }
141 }
142
143 static void spitz_pcmcia_init(void)
144 {
145         /* Setup default state of GPIO outputs
146            before we enable them as outputs. */
147         GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) |
148                 GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) |
149                 GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO54_nPCE_2);
150         GPSR(GPIO85_nPCE_1) = GPIO_bit(GPIO85_nPCE_1);
151
152         pxa_gpio_mode(GPIO48_nPOE_MD);
153         pxa_gpio_mode(GPIO49_nPWE_MD);
154         pxa_gpio_mode(GPIO50_nPIOR_MD);
155         pxa_gpio_mode(GPIO51_nPIOW_MD);
156         pxa_gpio_mode(GPIO55_nPREG_MD);
157         pxa_gpio_mode(GPIO56_nPWAIT_MD);
158         pxa_gpio_mode(GPIO57_nIOIS16_MD);
159         pxa_gpio_mode(GPIO85_nPCE_1_MD);
160         pxa_gpio_mode(GPIO54_nPCE_2_MD);
161         pxa_gpio_mode(GPIO104_pSKTSEL_MD);
162 }
163
164 static void spitz_pcmcia_pwr(struct device *scoop, unsigned short cpr, int nr)
165 {
166         /* Only need to override behaviour for slot 0 */
167         if (nr == 0)
168                 spitz_card_pwr_ctrl(SPITZ_PWR_CF, cpr);
169         else
170                 write_scoop_reg(scoop, SCOOP_CPR, cpr);
171 }
172
173 static struct scoop_pcmcia_dev spitz_pcmcia_scoop[] = {
174 {
175         .dev        = &spitzscoop_device.dev,
176         .irq        = SPITZ_IRQ_GPIO_CF_IRQ,
177         .cd_irq     = SPITZ_IRQ_GPIO_CF_CD,
178         .cd_irq_str = "PCMCIA0 CD",
179 },{
180         .dev        = &spitzscoop2_device.dev,
181         .irq        = SPITZ_IRQ_GPIO_CF2_IRQ,
182         .cd_irq     = -1,
183 },
184 };
185
186 static struct scoop_pcmcia_config spitz_pcmcia_config = {
187         .devs         = &spitz_pcmcia_scoop[0],
188         .num_devs     = 2,
189         .pcmcia_init  = spitz_pcmcia_init,
190         .power_ctrl   = spitz_pcmcia_pwr,
191 };
192
193 EXPORT_SYMBOL(spitzscoop_device);
194 EXPORT_SYMBOL(spitzscoop2_device);
195
196
197 /*
198  * Spitz SSP Device
199  *
200  * Set the parent as the scoop device because a lot of SSP devices
201  * also use scoop functions and this makes the power up/down order
202  * work correctly.
203  */
204 struct platform_device spitzssp_device = {
205         .name           = "corgi-ssp",
206         .dev            = {
207                 .parent = &spitzscoop_device.dev,
208         },
209         .id             = -1,
210 };
211
212 struct corgissp_machinfo spitz_ssp_machinfo = {
213         .port           = 2,
214         .cs_lcdcon      = SPITZ_GPIO_LCDCON_CS,
215         .cs_ads7846     = SPITZ_GPIO_ADS7846_CS,
216         .cs_max1111     = SPITZ_GPIO_MAX1111_CS,
217         .clk_lcdcon     = 520,
218         .clk_ads7846    = 14,
219         .clk_max1111    = 56,
220 };
221
222
223 /*
224  * Spitz Backlight Device
225  */
226 static void spitz_bl_kick_battery(void)
227 {
228         void (*kick_batt)(void);
229
230         kick_batt = symbol_get(sharpsl_battery_kick);
231         if (kick_batt) {
232                 kick_batt();
233                 symbol_put(sharpsl_battery_kick);
234         }
235 }
236
237 static struct generic_bl_info spitz_bl_machinfo = {
238         .name = "corgi-bl",
239         .default_intensity = 0x1f,
240         .limit_mask = 0x0b,
241         .max_intensity = 0x2f,
242         .kick_battery = spitz_bl_kick_battery,
243 };
244
245 static struct platform_device spitzbl_device = {
246         .name           = "generic-bl",
247         .dev            = {
248                 .platform_data  = &spitz_bl_machinfo,
249         },
250         .id             = -1,
251 };
252
253
254 /*
255  * Spitz Keyboard Device
256  */
257 static struct platform_device spitzkbd_device = {
258         .name           = "spitz-keyboard",
259         .id             = -1,
260 };
261
262
263 /*
264  * Spitz LEDs
265  */
266 static struct platform_device spitzled_device = {
267         .name           = "spitz-led",
268         .id             = -1,
269 };
270
271 /*
272  * Spitz Touch Screen Device
273  */
274 static struct resource spitzts_resources[] = {
275         [0] = {
276                 .start          = SPITZ_IRQ_GPIO_TP_INT,
277                 .end            = SPITZ_IRQ_GPIO_TP_INT,
278                 .flags          = IORESOURCE_IRQ,
279         },
280 };
281
282 static struct corgits_machinfo  spitz_ts_machinfo = {
283         .get_hsync_len   = spitz_get_hsync_len,
284         .put_hsync       = spitz_put_hsync,
285         .wait_hsync      = spitz_wait_hsync,
286 };
287
288 static struct platform_device spitzts_device = {
289         .name           = "corgi-ts",
290         .dev            = {
291                 .parent = &spitzssp_device.dev,
292                 .platform_data  = &spitz_ts_machinfo,
293         },
294         .id             = -1,
295         .num_resources  = ARRAY_SIZE(spitzts_resources),
296         .resource       = spitzts_resources,
297 };
298
299
300 /*
301  * MMC/SD Device
302  *
303  * The card detect interrupt isn't debounced so we delay it by 250ms
304  * to give the card a chance to fully insert/eject.
305  */
306
307 static struct pxamci_platform_data spitz_mci_platform_data;
308
309 static int spitz_mci_init(struct device *dev, irq_handler_t spitz_detect_int, void *data)
310 {
311         int err;
312
313         /* setup GPIO for PXA27x MMC controller */
314         pxa_gpio_mode(GPIO32_MMCCLK_MD);
315         pxa_gpio_mode(GPIO112_MMCCMD_MD);
316         pxa_gpio_mode(GPIO92_MMCDAT0_MD);
317         pxa_gpio_mode(GPIO109_MMCDAT1_MD);
318         pxa_gpio_mode(GPIO110_MMCDAT2_MD);
319         pxa_gpio_mode(GPIO111_MMCDAT3_MD);
320         pxa_gpio_mode(SPITZ_GPIO_nSD_DETECT | GPIO_IN);
321         pxa_gpio_mode(SPITZ_GPIO_nSD_WP | GPIO_IN);
322
323         spitz_mci_platform_data.detect_delay = msecs_to_jiffies(250);
324
325         err = request_irq(SPITZ_IRQ_GPIO_nSD_DETECT, spitz_detect_int,
326                           IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
327                           "MMC card detect", data);
328         if (err) {
329                 printk(KERN_ERR "spitz_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
330                 return -1;
331         }
332
333         return 0;
334 }
335
336 static void spitz_mci_setpower(struct device *dev, unsigned int vdd)
337 {
338         struct pxamci_platform_data* p_d = dev->platform_data;
339
340         if (( 1 << vdd) & p_d->ocr_mask)
341                 spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0004);
342         else
343                 spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0000);
344 }
345
346 static int spitz_mci_get_ro(struct device *dev)
347 {
348         return GPLR(SPITZ_GPIO_nSD_WP) & GPIO_bit(SPITZ_GPIO_nSD_WP);
349 }
350
351 static void spitz_mci_exit(struct device *dev, void *data)
352 {
353         free_irq(SPITZ_IRQ_GPIO_nSD_DETECT, data);
354 }
355
356 static struct pxamci_platform_data spitz_mci_platform_data = {
357         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
358         .init           = spitz_mci_init,
359         .get_ro         = spitz_mci_get_ro,
360         .setpower       = spitz_mci_setpower,
361         .exit           = spitz_mci_exit,
362 };
363
364
365 /*
366  * USB Host (OHCI)
367  */
368 static int spitz_ohci_init(struct device *dev)
369 {
370         /* Only Port 2 is connected */
371         pxa_gpio_mode(SPITZ_GPIO_USB_CONNECT | GPIO_IN);
372         pxa_gpio_mode(SPITZ_GPIO_USB_HOST | GPIO_OUT);
373         pxa_gpio_mode(SPITZ_GPIO_USB_DEVICE | GPIO_IN);
374
375         /* Setup USB Port 2 Output Control Register */
376         UP2OCR = UP2OCR_HXS | UP2OCR_HXOE | UP2OCR_DPPDE | UP2OCR_DMPDE;
377
378         GPSR(SPITZ_GPIO_USB_HOST) = GPIO_bit(SPITZ_GPIO_USB_HOST);
379
380         UHCHR = (UHCHR) &
381                 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
382
383         UHCRHDA |= UHCRHDA_NOCP;
384
385         return 0;
386 }
387
388 static struct pxaohci_platform_data spitz_ohci_platform_data = {
389         .port_mode      = PMM_NPS_MODE,
390         .init           = spitz_ohci_init,
391         .power_budget   = 150,
392 };
393
394
395 /*
396  * Irda
397  */
398 static void spitz_irda_transceiver_mode(struct device *dev, int mode)
399 {
400         if (mode & IR_OFF)
401                 set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_IR_ON);
402         else
403                 reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_IR_ON);
404 }
405
406 #ifdef CONFIG_MACH_AKITA
407 static void akita_irda_transceiver_mode(struct device *dev, int mode)
408 {
409         if (mode & IR_OFF)
410                 akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
411         else
412                 akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
413 }
414 #endif
415
416 static struct pxaficp_platform_data spitz_ficp_platform_data = {
417         .transceiver_cap  = IR_SIRMODE | IR_OFF,
418         .transceiver_mode = spitz_irda_transceiver_mode,
419 };
420
421
422 /*
423  * Spitz PXA Framebuffer
424  */
425
426 static struct pxafb_mode_info spitz_pxafb_modes[] = {
427 {
428         .pixclock       = 19231,
429         .xres           = 480,
430         .yres           = 640,
431         .bpp            = 16,
432         .hsync_len      = 40,
433         .left_margin    = 46,
434         .right_margin   = 125,
435         .vsync_len      = 3,
436         .upper_margin   = 1,
437         .lower_margin   = 0,
438         .sync           = 0,
439 },{
440         .pixclock       = 134617,
441         .xres           = 240,
442         .yres           = 320,
443         .bpp            = 16,
444         .hsync_len      = 20,
445         .left_margin    = 20,
446         .right_margin   = 46,
447         .vsync_len      = 2,
448         .upper_margin   = 1,
449         .lower_margin   = 0,
450         .sync           = 0,
451 },
452 };
453
454 static struct pxafb_mach_info spitz_pxafb_info = {
455         .modes          = &spitz_pxafb_modes[0],
456         .num_modes      = 2,
457         .fixed_modes    = 1,
458         .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act | LCCR0_LDDALT | LCCR0_OUC | LCCR0_CMDIM | LCCR0_RDSTM,
459         .lccr3          = LCCR3_PixRsEdg | LCCR3_OutEnH,
460         .pxafb_lcd_power = spitz_lcd_power,
461 };
462
463
464 static struct platform_device *devices[] __initdata = {
465         &spitzscoop_device,
466         &spitzssp_device,
467         &spitzkbd_device,
468         &spitzts_device,
469         &spitzbl_device,
470         &spitzled_device,
471 };
472
473 static void spitz_poweroff(void)
474 {
475         RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
476
477         pxa_gpio_mode(SPITZ_GPIO_ON_RESET | GPIO_OUT);
478         GPSR(SPITZ_GPIO_ON_RESET) = GPIO_bit(SPITZ_GPIO_ON_RESET);
479
480         mdelay(1000);
481         arm_machine_restart('h');
482 }
483
484 static void spitz_restart(char mode)
485 {
486         /* Bootloader magic for a reboot */
487         if((MSC0 & 0xffff0000) == 0x7ff00000)
488                 MSC0 = (MSC0 & 0xffff) | 0x7ee00000;
489
490         spitz_poweroff();
491 }
492
493 static void __init common_init(void)
494 {
495         pm_power_off = spitz_poweroff;
496         arm_pm_restart = spitz_restart;
497
498         PMCR = 0x00;
499
500         /* setup sleep mode values */
501         PWER  = 0x00000002;
502         PFER  = 0x00000000;
503         PRER  = 0x00000002;
504         PGSR0 = 0x0158C000;
505         PGSR1 = 0x00FF0080;
506         PGSR2 = 0x0001C004;
507
508         /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
509         PCFR |= PCFR_OPDE;
510
511         corgi_ssp_set_machinfo(&spitz_ssp_machinfo);
512
513         pxa_gpio_mode(SPITZ_GPIO_HSYNC | GPIO_IN);
514
515         platform_add_devices(devices, ARRAY_SIZE(devices));
516         pxa_set_mci_info(&spitz_mci_platform_data);
517         pxa_set_ohci_info(&spitz_ohci_platform_data);
518         pxa_set_ficp_info(&spitz_ficp_platform_data);
519         set_pxa_fb_parent(&spitzssp_device.dev);
520         set_pxa_fb_info(&spitz_pxafb_info);
521 }
522
523 static void __init spitz_init(void)
524 {
525         platform_scoop_config = &spitz_pcmcia_config;
526
527         spitz_bl_machinfo.set_bl_intensity = spitz_bl_set_intensity;
528
529         common_init();
530
531         platform_device_register(&spitzscoop2_device);
532 }
533
534 #ifdef CONFIG_MACH_AKITA
535 /*
536  * Akita IO Expander
537  */
538 struct platform_device akitaioexp_device = {
539         .name           = "akita-ioexp",
540         .id             = -1,
541 };
542
543 EXPORT_SYMBOL_GPL(akitaioexp_device);
544
545 static void __init akita_init(void)
546 {
547         spitz_ficp_platform_data.transceiver_mode = akita_irda_transceiver_mode;
548
549         /* We just pretend the second element of the array doesn't exist */
550         spitz_pcmcia_config.num_devs = 1;
551         platform_scoop_config = &spitz_pcmcia_config;
552         spitz_bl_machinfo.set_bl_intensity = akita_bl_set_intensity;
553
554         platform_device_register(&akitaioexp_device);
555
556         spitzscoop_device.dev.parent = &akitaioexp_device.dev;
557         common_init();
558 }
559 #endif
560
561
562 static void __init fixup_spitz(struct machine_desc *desc,
563                 struct tag *tags, char **cmdline, struct meminfo *mi)
564 {
565         sharpsl_save_param();
566         mi->nr_banks = 1;
567         mi->bank[0].start = 0xa0000000;
568         mi->bank[0].node = 0;
569         mi->bank[0].size = (64*1024*1024);
570 }
571
572 #ifdef CONFIG_MACH_SPITZ
573 MACHINE_START(SPITZ, "SHARP Spitz")
574         .phys_io        = 0x40000000,
575         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
576         .fixup          = fixup_spitz,
577         .map_io         = pxa_map_io,
578         .init_irq       = pxa27x_init_irq,
579         .init_machine   = spitz_init,
580         .timer          = &pxa_timer,
581 MACHINE_END
582 #endif
583
584 #ifdef CONFIG_MACH_BORZOI
585 MACHINE_START(BORZOI, "SHARP Borzoi")
586         .phys_io        = 0x40000000,
587         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
588         .fixup          = fixup_spitz,
589         .map_io         = pxa_map_io,
590         .init_irq       = pxa27x_init_irq,
591         .init_machine   = spitz_init,
592         .timer          = &pxa_timer,
593 MACHINE_END
594 #endif
595
596 #ifdef CONFIG_MACH_AKITA
597 MACHINE_START(AKITA, "SHARP Akita")
598         .phys_io        = 0x40000000,
599         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
600         .fixup          = fixup_spitz,
601         .map_io         = pxa_map_io,
602         .init_irq       = pxa27x_init_irq,
603         .init_machine   = akita_init,
604         .timer          = &pxa_timer,
605 MACHINE_END
606 #endif