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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[deliverable/linux.git] / arch / arm / mach-pxa / mainstone.c
1 /*
2 * linux/arch/arm/mach-pxa/mainstone.c
3 *
4 * Support for the Intel HCDDBBVA0 Development Platform.
5 * (go figure how they came up with such name...)
6 *
7 * Author: Nicolas Pitre
8 * Created: Nov 05, 2002
9 * Copyright: MontaVista Software Inc.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15 #include <linux/gpio.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/syscore_ops.h>
19 #include <linux/interrupt.h>
20 #include <linux/sched.h>
21 #include <linux/bitops.h>
22 #include <linux/fb.h>
23 #include <linux/ioport.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/input.h>
27 #include <linux/gpio_keys.h>
28 #include <linux/pwm_backlight.h>
29 #include <linux/smc91x.h>
30 #include <linux/i2c/pxa-i2c.h>
31 #include <linux/slab.h>
32 #include <linux/leds.h>
33
34 #include <asm/types.h>
35 #include <asm/setup.h>
36 #include <asm/memory.h>
37 #include <asm/mach-types.h>
38 #include <mach/hardware.h>
39 #include <asm/irq.h>
40 #include <asm/sizes.h>
41
42 #include <asm/mach/arch.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/irq.h>
45 #include <asm/mach/flash.h>
46
47 #include <mach/pxa27x.h>
48 #include <mach/mainstone.h>
49 #include <mach/audio.h>
50 #include <linux/platform_data/video-pxafb.h>
51 #include <linux/platform_data/mmc-pxamci.h>
52 #include <linux/platform_data/irda-pxaficp.h>
53 #include <linux/platform_data/usb-ohci-pxa27x.h>
54 #include <linux/platform_data/keypad-pxa27x.h>
55 #include <mach/smemc.h>
56
57 #include "generic.h"
58 #include "devices.h"
59
60 static unsigned long mainstone_pin_config[] = {
61 /* Chip Select */
62 GPIO15_nCS_1,
63
64 /* LCD - 16bpp Active TFT */
65 GPIOxx_LCD_TFT_16BPP,
66 GPIO16_PWM0_OUT, /* Backlight */
67
68 /* MMC */
69 GPIO32_MMC_CLK,
70 GPIO112_MMC_CMD,
71 GPIO92_MMC_DAT_0,
72 GPIO109_MMC_DAT_1,
73 GPIO110_MMC_DAT_2,
74 GPIO111_MMC_DAT_3,
75
76 /* USB Host Port 1 */
77 GPIO88_USBH1_PWR,
78 GPIO89_USBH1_PEN,
79
80 /* PC Card */
81 GPIO48_nPOE,
82 GPIO49_nPWE,
83 GPIO50_nPIOR,
84 GPIO51_nPIOW,
85 GPIO85_nPCE_1,
86 GPIO54_nPCE_2,
87 GPIO79_PSKTSEL,
88 GPIO55_nPREG,
89 GPIO56_nPWAIT,
90 GPIO57_nIOIS16,
91
92 /* AC97 */
93 GPIO28_AC97_BITCLK,
94 GPIO29_AC97_SDATA_IN_0,
95 GPIO30_AC97_SDATA_OUT,
96 GPIO31_AC97_SYNC,
97 GPIO45_AC97_SYSCLK,
98
99 /* Keypad */
100 GPIO93_KP_DKIN_0,
101 GPIO94_KP_DKIN_1,
102 GPIO95_KP_DKIN_2,
103 GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
104 GPIO101_KP_MKIN_1 | WAKEUP_ON_LEVEL_HIGH,
105 GPIO102_KP_MKIN_2 | WAKEUP_ON_LEVEL_HIGH,
106 GPIO97_KP_MKIN_3 | WAKEUP_ON_LEVEL_HIGH,
107 GPIO98_KP_MKIN_4 | WAKEUP_ON_LEVEL_HIGH,
108 GPIO99_KP_MKIN_5 | WAKEUP_ON_LEVEL_HIGH,
109 GPIO103_KP_MKOUT_0,
110 GPIO104_KP_MKOUT_1,
111 GPIO105_KP_MKOUT_2,
112 GPIO106_KP_MKOUT_3,
113 GPIO107_KP_MKOUT_4,
114 GPIO108_KP_MKOUT_5,
115 GPIO96_KP_MKOUT_6,
116
117 /* I2C */
118 GPIO117_I2C_SCL,
119 GPIO118_I2C_SDA,
120
121 /* GPIO */
122 GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
123 };
124
125 static unsigned long mainstone_irq_enabled;
126
127 static void mainstone_mask_irq(struct irq_data *d)
128 {
129 int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
130 MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
131 }
132
133 static void mainstone_unmask_irq(struct irq_data *d)
134 {
135 int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
136 /* the irq can be acknowledged only if deasserted, so it's done here */
137 MST_INTSETCLR &= ~(1 << mainstone_irq);
138 MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
139 }
140
141 static struct irq_chip mainstone_irq_chip = {
142 .name = "FPGA",
143 .irq_ack = mainstone_mask_irq,
144 .irq_mask = mainstone_mask_irq,
145 .irq_unmask = mainstone_unmask_irq,
146 };
147
148 static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
149 {
150 unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
151 do {
152 /* clear useless edge notification */
153 desc->irq_data.chip->irq_ack(&desc->irq_data);
154 if (likely(pending)) {
155 irq = MAINSTONE_IRQ(0) + __ffs(pending);
156 generic_handle_irq(irq);
157 }
158 pending = MST_INTSETCLR & mainstone_irq_enabled;
159 } while (pending);
160 }
161
162 static void __init mainstone_init_irq(void)
163 {
164 int irq;
165
166 pxa27x_init_irq();
167
168 /* setup extra Mainstone irqs */
169 for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
170 irq_set_chip_and_handler(irq, &mainstone_irq_chip,
171 handle_level_irq);
172 if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
173 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
174 else
175 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
176 }
177 set_irq_flags(MAINSTONE_IRQ(8), 0);
178 set_irq_flags(MAINSTONE_IRQ(12), 0);
179
180 MST_INTMSKENA = 0;
181 MST_INTSETCLR = 0;
182
183 irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), mainstone_irq_handler);
184 irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);
185 }
186
187 #ifdef CONFIG_PM
188
189 static void mainstone_irq_resume(void)
190 {
191 MST_INTMSKENA = mainstone_irq_enabled;
192 }
193
194 static struct syscore_ops mainstone_irq_syscore_ops = {
195 .resume = mainstone_irq_resume,
196 };
197
198 static int __init mainstone_irq_device_init(void)
199 {
200 if (machine_is_mainstone())
201 register_syscore_ops(&mainstone_irq_syscore_ops);
202
203 return 0;
204 }
205
206 device_initcall(mainstone_irq_device_init);
207
208 #endif
209
210
211 static struct resource smc91x_resources[] = {
212 [0] = {
213 .start = (MST_ETH_PHYS + 0x300),
214 .end = (MST_ETH_PHYS + 0xfffff),
215 .flags = IORESOURCE_MEM,
216 },
217 [1] = {
218 .start = MAINSTONE_IRQ(3),
219 .end = MAINSTONE_IRQ(3),
220 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
221 }
222 };
223
224 static struct smc91x_platdata mainstone_smc91x_info = {
225 .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
226 SMC91X_NOWAIT | SMC91X_USE_DMA,
227 };
228
229 static struct platform_device smc91x_device = {
230 .name = "smc91x",
231 .id = 0,
232 .num_resources = ARRAY_SIZE(smc91x_resources),
233 .resource = smc91x_resources,
234 .dev = {
235 .platform_data = &mainstone_smc91x_info,
236 },
237 };
238
239 static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
240 {
241 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
242 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
243 return 0;
244 }
245
246 static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
247 {
248 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
249 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
250 }
251
252 static long mst_audio_suspend_mask;
253
254 static void mst_audio_suspend(void *priv)
255 {
256 mst_audio_suspend_mask = MST_MSCWR2;
257 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
258 }
259
260 static void mst_audio_resume(void *priv)
261 {
262 MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
263 }
264
265 static pxa2xx_audio_ops_t mst_audio_ops = {
266 .startup = mst_audio_startup,
267 .shutdown = mst_audio_shutdown,
268 .suspend = mst_audio_suspend,
269 .resume = mst_audio_resume,
270 };
271
272 static struct resource flash_resources[] = {
273 [0] = {
274 .start = PXA_CS0_PHYS,
275 .end = PXA_CS0_PHYS + SZ_64M - 1,
276 .flags = IORESOURCE_MEM,
277 },
278 [1] = {
279 .start = PXA_CS1_PHYS,
280 .end = PXA_CS1_PHYS + SZ_64M - 1,
281 .flags = IORESOURCE_MEM,
282 },
283 };
284
285 static struct mtd_partition mainstoneflash0_partitions[] = {
286 {
287 .name = "Bootloader",
288 .size = 0x00040000,
289 .offset = 0,
290 .mask_flags = MTD_WRITEABLE /* force read-only */
291 },{
292 .name = "Kernel",
293 .size = 0x00400000,
294 .offset = 0x00040000,
295 },{
296 .name = "Filesystem",
297 .size = MTDPART_SIZ_FULL,
298 .offset = 0x00440000
299 }
300 };
301
302 static struct flash_platform_data mst_flash_data[2] = {
303 {
304 .map_name = "cfi_probe",
305 .parts = mainstoneflash0_partitions,
306 .nr_parts = ARRAY_SIZE(mainstoneflash0_partitions),
307 }, {
308 .map_name = "cfi_probe",
309 .parts = NULL,
310 .nr_parts = 0,
311 }
312 };
313
314 static struct platform_device mst_flash_device[2] = {
315 {
316 .name = "pxa2xx-flash",
317 .id = 0,
318 .dev = {
319 .platform_data = &mst_flash_data[0],
320 },
321 .resource = &flash_resources[0],
322 .num_resources = 1,
323 },
324 {
325 .name = "pxa2xx-flash",
326 .id = 1,
327 .dev = {
328 .platform_data = &mst_flash_data[1],
329 },
330 .resource = &flash_resources[1],
331 .num_resources = 1,
332 },
333 };
334
335 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
336 static struct platform_pwm_backlight_data mainstone_backlight_data = {
337 .pwm_id = 0,
338 .max_brightness = 1023,
339 .dft_brightness = 1023,
340 .pwm_period_ns = 78770,
341 };
342
343 static struct platform_device mainstone_backlight_device = {
344 .name = "pwm-backlight",
345 .dev = {
346 .parent = &pxa27x_device_pwm0.dev,
347 .platform_data = &mainstone_backlight_data,
348 },
349 };
350
351 static void __init mainstone_backlight_register(void)
352 {
353 int ret = platform_device_register(&mainstone_backlight_device);
354 if (ret)
355 printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret);
356 }
357 #else
358 #define mainstone_backlight_register() do { } while (0)
359 #endif
360
361 static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
362 .pixclock = 50000,
363 .xres = 640,
364 .yres = 480,
365 .bpp = 16,
366 .hsync_len = 1,
367 .left_margin = 0x9f,
368 .right_margin = 1,
369 .vsync_len = 44,
370 .upper_margin = 0,
371 .lower_margin = 0,
372 .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
373 };
374
375 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
376 .pixclock = 110000,
377 .xres = 240,
378 .yres = 320,
379 .bpp = 16,
380 .hsync_len = 4,
381 .left_margin = 8,
382 .right_margin = 20,
383 .vsync_len = 3,
384 .upper_margin = 1,
385 .lower_margin = 10,
386 .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
387 };
388
389 static struct pxafb_mach_info mainstone_pxafb_info = {
390 .num_modes = 1,
391 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
392 };
393
394 static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
395 {
396 int err;
397
398 /* make sure SD/Memory Stick multiplexer's signals
399 * are routed to MMC controller
400 */
401 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
402
403 err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
404 "MMC card detect", data);
405 if (err)
406 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
407
408 return err;
409 }
410
411 static int mainstone_mci_setpower(struct device *dev, unsigned int vdd)
412 {
413 struct pxamci_platform_data* p_d = dev->platform_data;
414
415 if (( 1 << vdd) & p_d->ocr_mask) {
416 printk(KERN_DEBUG "%s: on\n", __func__);
417 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
418 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
419 } else {
420 printk(KERN_DEBUG "%s: off\n", __func__);
421 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
422 }
423 return 0;
424 }
425
426 static void mainstone_mci_exit(struct device *dev, void *data)
427 {
428 free_irq(MAINSTONE_MMC_IRQ, data);
429 }
430
431 static struct pxamci_platform_data mainstone_mci_platform_data = {
432 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
433 .init = mainstone_mci_init,
434 .setpower = mainstone_mci_setpower,
435 .exit = mainstone_mci_exit,
436 .gpio_card_detect = -1,
437 .gpio_card_ro = -1,
438 .gpio_power = -1,
439 };
440
441 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
442 {
443 unsigned long flags;
444
445 local_irq_save(flags);
446 if (mode & IR_SIRMODE) {
447 MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
448 } else if (mode & IR_FIRMODE) {
449 MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
450 }
451 pxa2xx_transceiver_mode(dev, mode);
452 if (mode & IR_OFF) {
453 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
454 } else {
455 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
456 }
457 local_irq_restore(flags);
458 }
459
460 static struct pxaficp_platform_data mainstone_ficp_platform_data = {
461 .gpio_pwdown = -1,
462 .transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
463 .transceiver_mode = mainstone_irda_transceiver_mode,
464 };
465
466 static struct gpio_keys_button gpio_keys_button[] = {
467 [0] = {
468 .desc = "wakeup",
469 .code = KEY_SUSPEND,
470 .type = EV_KEY,
471 .gpio = 1,
472 .wakeup = 1,
473 },
474 };
475
476 static struct gpio_keys_platform_data mainstone_gpio_keys = {
477 .buttons = gpio_keys_button,
478 .nbuttons = 1,
479 };
480
481 static struct platform_device mst_gpio_keys_device = {
482 .name = "gpio-keys",
483 .id = -1,
484 .dev = {
485 .platform_data = &mainstone_gpio_keys,
486 },
487 };
488
489 static struct platform_device *platform_devices[] __initdata = {
490 &smc91x_device,
491 &mst_flash_device[0],
492 &mst_flash_device[1],
493 &mst_gpio_keys_device,
494 };
495
496 static struct pxaohci_platform_data mainstone_ohci_platform_data = {
497 .port_mode = PMM_PERPORT_MODE,
498 .flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
499 };
500
501 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
502 static const unsigned int mainstone_matrix_keys[] = {
503 KEY(0, 0, KEY_A), KEY(1, 0, KEY_B), KEY(2, 0, KEY_C),
504 KEY(3, 0, KEY_D), KEY(4, 0, KEY_E), KEY(5, 0, KEY_F),
505 KEY(0, 1, KEY_G), KEY(1, 1, KEY_H), KEY(2, 1, KEY_I),
506 KEY(3, 1, KEY_J), KEY(4, 1, KEY_K), KEY(5, 1, KEY_L),
507 KEY(0, 2, KEY_M), KEY(1, 2, KEY_N), KEY(2, 2, KEY_O),
508 KEY(3, 2, KEY_P), KEY(4, 2, KEY_Q), KEY(5, 2, KEY_R),
509 KEY(0, 3, KEY_S), KEY(1, 3, KEY_T), KEY(2, 3, KEY_U),
510 KEY(3, 3, KEY_V), KEY(4, 3, KEY_W), KEY(5, 3, KEY_X),
511 KEY(2, 4, KEY_Y), KEY(3, 4, KEY_Z),
512
513 KEY(0, 4, KEY_DOT), /* . */
514 KEY(1, 4, KEY_CLOSE), /* @ */
515 KEY(4, 4, KEY_SLASH),
516 KEY(5, 4, KEY_BACKSLASH),
517 KEY(0, 5, KEY_HOME),
518 KEY(1, 5, KEY_LEFTSHIFT),
519 KEY(2, 5, KEY_SPACE),
520 KEY(3, 5, KEY_SPACE),
521 KEY(4, 5, KEY_ENTER),
522 KEY(5, 5, KEY_BACKSPACE),
523
524 KEY(0, 6, KEY_UP),
525 KEY(1, 6, KEY_DOWN),
526 KEY(2, 6, KEY_LEFT),
527 KEY(3, 6, KEY_RIGHT),
528 KEY(4, 6, KEY_SELECT),
529 };
530
531 static struct matrix_keymap_data mainstone_matrix_keymap_data = {
532 .keymap = mainstone_matrix_keys,
533 .keymap_size = ARRAY_SIZE(mainstone_matrix_keys),
534 };
535
536 struct pxa27x_keypad_platform_data mainstone_keypad_info = {
537 .matrix_key_rows = 6,
538 .matrix_key_cols = 7,
539 .matrix_keymap_data = &mainstone_matrix_keymap_data,
540
541 .enable_rotary0 = 1,
542 .rotary0_up_key = KEY_UP,
543 .rotary0_down_key = KEY_DOWN,
544
545 .debounce_interval = 30,
546 };
547
548 static void __init mainstone_init_keypad(void)
549 {
550 pxa_set_keypad_info(&mainstone_keypad_info);
551 }
552 #else
553 static inline void mainstone_init_keypad(void) {}
554 #endif
555
556 static void __init mainstone_init(void)
557 {
558 int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
559
560 pxa2xx_mfp_config(ARRAY_AND_SIZE(mainstone_pin_config));
561
562 pxa_set_ffuart_info(NULL);
563 pxa_set_btuart_info(NULL);
564 pxa_set_stuart_info(NULL);
565
566 mst_flash_data[0].width = (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
567 mst_flash_data[1].width = 4;
568
569 /* Compensate for SW7 which swaps the flash banks */
570 mst_flash_data[SW7].name = "processor-flash";
571 mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
572
573 printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
574 mst_flash_data[0].name);
575
576 /* system bus arbiter setting
577 * - Core_Park
578 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
579 */
580 ARB_CNTRL = ARB_CORE_PARK | 0x234;
581
582 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
583
584 /* reading Mainstone's "Virtual Configuration Register"
585 might be handy to select LCD type here */
586 if (0)
587 mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
588 else
589 mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
590
591 pxa_set_fb_info(NULL, &mainstone_pxafb_info);
592 mainstone_backlight_register();
593
594 pxa_set_mci_info(&mainstone_mci_platform_data);
595 pxa_set_ficp_info(&mainstone_ficp_platform_data);
596 pxa_set_ohci_info(&mainstone_ohci_platform_data);
597 pxa_set_i2c_info(NULL);
598 pxa_set_ac97_info(&mst_audio_ops);
599
600 mainstone_init_keypad();
601 }
602
603
604 static struct map_desc mainstone_io_desc[] __initdata = {
605 { /* CPLD */
606 .virtual = MST_FPGA_VIRT,
607 .pfn = __phys_to_pfn(MST_FPGA_PHYS),
608 .length = 0x00100000,
609 .type = MT_DEVICE
610 }
611 };
612
613 static void __init mainstone_map_io(void)
614 {
615 pxa27x_map_io();
616 iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
617
618 /* for use I SRAM as framebuffer. */
619 PSLR |= 0xF04;
620 PCFR = 0x66;
621 }
622
623 /*
624 * Driver for the 8 discrete LEDs available for general use:
625 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
626 * so be sure to not monkey with them here.
627 */
628
629 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
630 struct mainstone_led {
631 struct led_classdev cdev;
632 u8 mask;
633 };
634
635 /*
636 * The triggers lines up below will only be used if the
637 * LED triggers are compiled in.
638 */
639 static const struct {
640 const char *name;
641 const char *trigger;
642 } mainstone_leds[] = {
643 { "mainstone:D28", "default-on", },
644 { "mainstone:D27", "cpu0", },
645 { "mainstone:D26", "heartbeat" },
646 { "mainstone:D25", },
647 { "mainstone:D24", },
648 { "mainstone:D23", },
649 { "mainstone:D22", },
650 { "mainstone:D21", },
651 };
652
653 static void mainstone_led_set(struct led_classdev *cdev,
654 enum led_brightness b)
655 {
656 struct mainstone_led *led = container_of(cdev,
657 struct mainstone_led, cdev);
658 u32 reg = MST_LEDCTRL;
659
660 if (b != LED_OFF)
661 reg |= led->mask;
662 else
663 reg &= ~led->mask;
664
665 MST_LEDCTRL = reg;
666 }
667
668 static enum led_brightness mainstone_led_get(struct led_classdev *cdev)
669 {
670 struct mainstone_led *led = container_of(cdev,
671 struct mainstone_led, cdev);
672 u32 reg = MST_LEDCTRL;
673
674 return (reg & led->mask) ? LED_FULL : LED_OFF;
675 }
676
677 static int __init mainstone_leds_init(void)
678 {
679 int i;
680
681 if (!machine_is_mainstone())
682 return -ENODEV;
683
684 /* All ON */
685 MST_LEDCTRL |= 0xff;
686 for (i = 0; i < ARRAY_SIZE(mainstone_leds); i++) {
687 struct mainstone_led *led;
688
689 led = kzalloc(sizeof(*led), GFP_KERNEL);
690 if (!led)
691 break;
692
693 led->cdev.name = mainstone_leds[i].name;
694 led->cdev.brightness_set = mainstone_led_set;
695 led->cdev.brightness_get = mainstone_led_get;
696 led->cdev.default_trigger = mainstone_leds[i].trigger;
697 led->mask = BIT(i);
698
699 if (led_classdev_register(NULL, &led->cdev) < 0) {
700 kfree(led);
701 break;
702 }
703 }
704
705 return 0;
706 }
707
708 /*
709 * Since we may have triggers on any subsystem, defer registration
710 * until after subsystem_init.
711 */
712 fs_initcall(mainstone_leds_init);
713 #endif
714
715 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
716 /* Maintainer: MontaVista Software Inc. */
717 .atag_offset = 0x100, /* BLOB boot parameter setting */
718 .map_io = mainstone_map_io,
719 .nr_irqs = MAINSTONE_NR_IRQS,
720 .init_irq = mainstone_init_irq,
721 .handle_irq = pxa27x_handle_irq,
722 .init_time = pxa_timer_init,
723 .init_machine = mainstone_init,
724 .restart = pxa_restart,
725 MACHINE_END
Linux kernel - Deliverables
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