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TOMOYO Linux Cross Reference
Linux/arch/mips/jz4740/board-qi_lb60.c

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  1 /*
  2  * linux/arch/mips/jz4740/board-qi_lb60.c
  3  *
  4  * QI_LB60 board support
  5  *
  6  * Copyright (c) 2009 Qi Hardware inc.,
  7  * Author: Xiangfu Liu <xiangfu@qi-hardware.com>
  8  * Copyright 2010, Lars-Peter Clausen <lars@metafoo.de>
  9  *
 10  * This program is free software; you can redistribute it and/or modify
 11  * it under the terms of the GNU General Public License version 2 or later
 12  * as published by the Free Software Foundation.
 13  */
 14 
 15 #include <linux/kernel.h>
 16 #include <linux/init.h>
 17 #include <linux/gpio.h>
 18 #include <linux/gpio/machine.h>
 19 
 20 #include <linux/input.h>
 21 #include <linux/gpio_keys.h>
 22 #include <linux/input/matrix_keypad.h>
 23 #include <linux/spi/spi.h>
 24 #include <linux/spi/spi_gpio.h>
 25 #include <linux/power_supply.h>
 26 #include <linux/power/jz4740-battery.h>
 27 #include <linux/power/gpio-charger.h>
 28 #include <linux/pwm.h>
 29 
 30 #include <asm/mach-jz4740/gpio.h>
 31 #include <asm/mach-jz4740/jz4740_fb.h>
 32 #include <asm/mach-jz4740/jz4740_mmc.h>
 33 #include <asm/mach-jz4740/jz4740_nand.h>
 34 
 35 #include <linux/regulator/fixed.h>
 36 #include <linux/regulator/machine.h>
 37 
 38 #include <asm/mach-jz4740/platform.h>
 39 
 40 #include "clock.h"
 41 
 42 /* GPIOs */
 43 #define QI_LB60_GPIO_SD_CD              JZ_GPIO_PORTD(0)
 44 #define QI_LB60_GPIO_SD_VCC_EN_N        JZ_GPIO_PORTD(2)
 45 
 46 #define QI_LB60_GPIO_KEYOUT(x)          (JZ_GPIO_PORTC(10) + (x))
 47 #define QI_LB60_GPIO_KEYIN(x)           (JZ_GPIO_PORTD(18) + (x))
 48 #define QI_LB60_GPIO_KEYIN8             JZ_GPIO_PORTD(26)
 49 
 50 /* NAND */
 51 
 52 /* Early prototypes of the QI LB60 had only 1GB of NAND.
 53  * In order to support these devices as well the partition and ecc layout is
 54  * initialized depending on the NAND size */
 55 static struct mtd_partition qi_lb60_partitions_1gb[] = {
 56         {
 57                 .name = "NAND BOOT partition",
 58                 .offset = 0 * 0x100000,
 59                 .size = 4 * 0x100000,
 60         },
 61         {
 62                 .name = "NAND KERNEL partition",
 63                 .offset = 4 * 0x100000,
 64                 .size = 4 * 0x100000,
 65         },
 66         {
 67                 .name = "NAND ROOTFS partition",
 68                 .offset = 8 * 0x100000,
 69                 .size = (504 + 512) * 0x100000,
 70         },
 71 };
 72 
 73 static struct mtd_partition qi_lb60_partitions_2gb[] = {
 74         {
 75                 .name = "NAND BOOT partition",
 76                 .offset = 0 * 0x100000,
 77                 .size = 4 * 0x100000,
 78         },
 79         {
 80                 .name = "NAND KERNEL partition",
 81                 .offset = 4 * 0x100000,
 82                 .size = 4 * 0x100000,
 83         },
 84         {
 85                 .name = "NAND ROOTFS partition",
 86                 .offset = 8 * 0x100000,
 87                 .size = (504 + 512 + 1024) * 0x100000,
 88         },
 89 };
 90 
 91 static int qi_lb60_ooblayout_ecc(struct mtd_info *mtd, int section,
 92                                  struct mtd_oob_region *oobregion)
 93 {
 94         if (section)
 95                 return -ERANGE;
 96 
 97         oobregion->length = 36;
 98         oobregion->offset = 6;
 99 
100         if (mtd->oobsize == 128) {
101                 oobregion->length *= 2;
102                 oobregion->offset *= 2;
103         }
104 
105         return 0;
106 }
107 
108 static int qi_lb60_ooblayout_free(struct mtd_info *mtd, int section,
109                                   struct mtd_oob_region *oobregion)
110 {
111         int eccbytes = 36, eccoff = 6;
112 
113         if (section > 1)
114                 return -ERANGE;
115 
116         if (mtd->oobsize == 128) {
117                 eccbytes *= 2;
118                 eccoff *= 2;
119         }
120 
121         if (!section) {
122                 oobregion->offset = 2;
123                 oobregion->length = eccoff - 2;
124         } else {
125                 oobregion->offset = eccoff + eccbytes;
126                 oobregion->length = mtd->oobsize - oobregion->offset;
127         }
128 
129         return 0;
130 }
131 
132 static const struct mtd_ooblayout_ops qi_lb60_ooblayout_ops = {
133         .ecc = qi_lb60_ooblayout_ecc,
134         .free = qi_lb60_ooblayout_free,
135 };
136 
137 static void qi_lb60_nand_ident(struct platform_device *pdev,
138                 struct mtd_info *mtd, struct mtd_partition **partitions,
139                 int *num_partitions)
140 {
141         struct nand_chip *chip = mtd_to_nand(mtd);
142 
143         if (chip->page_shift == 12) {
144                 *partitions = qi_lb60_partitions_2gb;
145                 *num_partitions = ARRAY_SIZE(qi_lb60_partitions_2gb);
146         } else {
147                 *partitions = qi_lb60_partitions_1gb;
148                 *num_partitions = ARRAY_SIZE(qi_lb60_partitions_1gb);
149         }
150 
151         mtd_set_ooblayout(mtd, &qi_lb60_ooblayout_ops);
152 }
153 
154 static struct jz_nand_platform_data qi_lb60_nand_pdata = {
155         .ident_callback = qi_lb60_nand_ident,
156         .banks = { 1 },
157 };
158 
159 static struct gpiod_lookup_table qi_lb60_nand_gpio_table = {
160         .dev_id = "jz4740-nand.0",
161         .table = {
162                 GPIO_LOOKUP("Bank C", 30, "busy", 0),
163                 { },
164         },
165 };
166 
167 
168 /* Keyboard*/
169 
170 #define KEY_QI_QI       KEY_F13
171 #define KEY_QI_UPRED    KEY_RIGHTALT
172 #define KEY_QI_VOLUP    KEY_VOLUMEUP
173 #define KEY_QI_VOLDOWN  KEY_VOLUMEDOWN
174 #define KEY_QI_FN       KEY_LEFTCTRL
175 
176 static const uint32_t qi_lb60_keymap[] = {
177         KEY(0, 0, KEY_F1),      /* S2 */
178         KEY(0, 1, KEY_F2),      /* S3 */
179         KEY(0, 2, KEY_F3),      /* S4 */
180         KEY(0, 3, KEY_F4),      /* S5 */
181         KEY(0, 4, KEY_F5),      /* S6 */
182         KEY(0, 5, KEY_F6),      /* S7 */
183         KEY(0, 6, KEY_F7),      /* S8 */
184 
185         KEY(1, 0, KEY_Q),       /* S10 */
186         KEY(1, 1, KEY_W),       /* S11 */
187         KEY(1, 2, KEY_E),       /* S12 */
188         KEY(1, 3, KEY_R),       /* S13 */
189         KEY(1, 4, KEY_T),       /* S14 */
190         KEY(1, 5, KEY_Y),       /* S15 */
191         KEY(1, 6, KEY_U),       /* S16 */
192         KEY(1, 7, KEY_I),       /* S17 */
193         KEY(2, 0, KEY_A),       /* S18 */
194         KEY(2, 1, KEY_S),       /* S19 */
195         KEY(2, 2, KEY_D),       /* S20 */
196         KEY(2, 3, KEY_F),       /* S21 */
197         KEY(2, 4, KEY_G),       /* S22 */
198         KEY(2, 5, KEY_H),       /* S23 */
199         KEY(2, 6, KEY_J),       /* S24 */
200         KEY(2, 7, KEY_K),       /* S25 */
201         KEY(3, 0, KEY_ESC),     /* S26 */
202         KEY(3, 1, KEY_Z),       /* S27 */
203         KEY(3, 2, KEY_X),       /* S28 */
204         KEY(3, 3, KEY_C),       /* S29 */
205         KEY(3, 4, KEY_V),       /* S30 */
206         KEY(3, 5, KEY_B),       /* S31 */
207         KEY(3, 6, KEY_N),       /* S32 */
208         KEY(3, 7, KEY_M),       /* S33 */
209         KEY(4, 0, KEY_TAB),     /* S34 */
210         KEY(4, 1, KEY_CAPSLOCK),        /* S35 */
211         KEY(4, 2, KEY_BACKSLASH),       /* S36 */
212         KEY(4, 3, KEY_APOSTROPHE),      /* S37 */
213         KEY(4, 4, KEY_COMMA),   /* S38 */
214         KEY(4, 5, KEY_DOT),     /* S39 */
215         KEY(4, 6, KEY_SLASH),   /* S40 */
216         KEY(4, 7, KEY_UP),      /* S41 */
217         KEY(5, 0, KEY_O),       /* S42 */
218         KEY(5, 1, KEY_L),       /* S43 */
219         KEY(5, 2, KEY_EQUAL),   /* S44 */
220         KEY(5, 3, KEY_QI_UPRED),        /* S45 */
221         KEY(5, 4, KEY_SPACE),   /* S46 */
222         KEY(5, 5, KEY_QI_QI),   /* S47 */
223         KEY(5, 6, KEY_RIGHTCTRL),       /* S48 */
224         KEY(5, 7, KEY_LEFT),    /* S49 */
225         KEY(6, 0, KEY_F8),      /* S50 */
226         KEY(6, 1, KEY_P),       /* S51 */
227         KEY(6, 2, KEY_BACKSPACE),/* S52 */
228         KEY(6, 3, KEY_ENTER),   /* S53 */
229         KEY(6, 4, KEY_QI_VOLUP),        /* S54 */
230         KEY(6, 5, KEY_QI_VOLDOWN),      /* S55 */
231         KEY(6, 6, KEY_DOWN),    /* S56 */
232         KEY(6, 7, KEY_RIGHT),   /* S57 */
233 
234         KEY(7, 0, KEY_LEFTSHIFT),       /* S58 */
235         KEY(7, 1, KEY_LEFTALT), /* S59 */
236         KEY(7, 2, KEY_QI_FN),   /* S60 */
237 };
238 
239 static const struct matrix_keymap_data qi_lb60_keymap_data = {
240         .keymap         = qi_lb60_keymap,
241         .keymap_size    = ARRAY_SIZE(qi_lb60_keymap),
242 };
243 
244 static const unsigned int qi_lb60_keypad_cols[] = {
245         QI_LB60_GPIO_KEYOUT(0),
246         QI_LB60_GPIO_KEYOUT(1),
247         QI_LB60_GPIO_KEYOUT(2),
248         QI_LB60_GPIO_KEYOUT(3),
249         QI_LB60_GPIO_KEYOUT(4),
250         QI_LB60_GPIO_KEYOUT(5),
251         QI_LB60_GPIO_KEYOUT(6),
252         QI_LB60_GPIO_KEYOUT(7),
253 };
254 
255 static const unsigned int qi_lb60_keypad_rows[] = {
256         QI_LB60_GPIO_KEYIN(0),
257         QI_LB60_GPIO_KEYIN(1),
258         QI_LB60_GPIO_KEYIN(2),
259         QI_LB60_GPIO_KEYIN(3),
260         QI_LB60_GPIO_KEYIN(4),
261         QI_LB60_GPIO_KEYIN(5),
262         QI_LB60_GPIO_KEYIN(6),
263         QI_LB60_GPIO_KEYIN8,
264 };
265 
266 static struct matrix_keypad_platform_data qi_lb60_pdata = {
267         .keymap_data = &qi_lb60_keymap_data,
268         .col_gpios      = qi_lb60_keypad_cols,
269         .row_gpios      = qi_lb60_keypad_rows,
270         .num_col_gpios  = ARRAY_SIZE(qi_lb60_keypad_cols),
271         .num_row_gpios  = ARRAY_SIZE(qi_lb60_keypad_rows),
272         .col_scan_delay_us      = 10,
273         .debounce_ms            = 10,
274         .wakeup                 = 1,
275         .active_low             = 1,
276 };
277 
278 static struct platform_device qi_lb60_keypad = {
279         .name           = "matrix-keypad",
280         .id             = -1,
281         .dev            = {
282                 .platform_data = &qi_lb60_pdata,
283         },
284 };
285 
286 /* Display */
287 static struct fb_videomode qi_lb60_video_modes[] = {
288         {
289                 .name = "320x240",
290                 .xres = 320,
291                 .yres = 240,
292                 .refresh = 30,
293                 .left_margin = 140,
294                 .right_margin = 273,
295                 .upper_margin = 20,
296                 .lower_margin = 2,
297                 .hsync_len = 1,
298                 .vsync_len = 1,
299                 .sync = 0,
300                 .vmode = FB_VMODE_NONINTERLACED,
301         },
302 };
303 
304 static struct jz4740_fb_platform_data qi_lb60_fb_pdata = {
305         .width          = 60,
306         .height         = 45,
307         .num_modes      = ARRAY_SIZE(qi_lb60_video_modes),
308         .modes          = qi_lb60_video_modes,
309         .bpp            = 24,
310         .lcd_type       = JZ_LCD_TYPE_8BIT_SERIAL,
311         .pixclk_falling_edge = 1,
312 };
313 
314 struct spi_gpio_platform_data spigpio_platform_data = {
315         .sck = JZ_GPIO_PORTC(23),
316         .mosi = JZ_GPIO_PORTC(22),
317         .miso = -1,
318         .num_chipselect = 1,
319 };
320 
321 static struct platform_device spigpio_device = {
322         .name = "spi_gpio",
323         .id   = 1,
324         .dev = {
325                 .platform_data = &spigpio_platform_data,
326         },
327 };
328 
329 static struct spi_board_info qi_lb60_spi_board_info[] = {
330         {
331                 .modalias = "ili8960",
332                 .controller_data = (void *)JZ_GPIO_PORTC(21),
333                 .chip_select = 0,
334                 .bus_num = 1,
335                 .max_speed_hz = 30 * 1000,
336                 .mode = SPI_3WIRE,
337         },
338 };
339 
340 /* Battery */
341 static struct jz_battery_platform_data qi_lb60_battery_pdata = {
342         .gpio_charge =  JZ_GPIO_PORTC(27),
343         .gpio_charge_active_low = 1,
344         .info = {
345                 .name = "battery",
346                 .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
347                 .voltage_max_design = 4200000,
348                 .voltage_min_design = 3600000,
349         },
350 };
351 
352 /* GPIO Key: power */
353 static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = {
354         [0] = {
355                 .code           = KEY_POWER,
356                 .gpio           = JZ_GPIO_PORTD(29),
357                 .active_low     = 1,
358                 .desc           = "Power",
359                 .wakeup         = 1,
360         },
361 };
362 
363 static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = {
364         .nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons),
365         .buttons = qi_lb60_gpio_keys_buttons,
366 };
367 
368 static struct platform_device qi_lb60_gpio_keys = {
369         .name = "gpio-keys",
370         .id =   -1,
371         .dev = {
372                 .platform_data = &qi_lb60_gpio_keys_data,
373         }
374 };
375 
376 static struct jz4740_mmc_platform_data qi_lb60_mmc_pdata = {
377         .gpio_card_detect       = QI_LB60_GPIO_SD_CD,
378         .gpio_read_only         = -1,
379         .gpio_power             = QI_LB60_GPIO_SD_VCC_EN_N,
380         .power_active_low       = 1,
381 };
382 
383 /* beeper */
384 static struct pwm_lookup qi_lb60_pwm_lookup[] = {
385         PWM_LOOKUP("jz4740-pwm", 4, "pwm-beeper", NULL, 0,
386                    PWM_POLARITY_NORMAL),
387 };
388 
389 static struct platform_device qi_lb60_pwm_beeper = {
390         .name = "pwm-beeper",
391         .id = -1,
392 };
393 
394 /* charger */
395 static char *qi_lb60_batteries[] = {
396         "battery",
397 };
398 
399 static struct gpio_charger_platform_data qi_lb60_charger_pdata = {
400         .name = "usb",
401         .type = POWER_SUPPLY_TYPE_USB,
402         .gpio = JZ_GPIO_PORTD(28),
403         .gpio_active_low = 1,
404         .supplied_to = qi_lb60_batteries,
405         .num_supplicants = ARRAY_SIZE(qi_lb60_batteries),
406 };
407 
408 static struct platform_device qi_lb60_charger_device = {
409         .name = "gpio-charger",
410         .dev = {
411                 .platform_data = &qi_lb60_charger_pdata,
412         },
413 };
414 
415 /* audio */
416 static struct platform_device qi_lb60_audio_device = {
417         .name = "qi-lb60-audio",
418         .id = -1,
419 };
420 
421 static struct gpiod_lookup_table qi_lb60_audio_gpio_table = {
422         .dev_id = "qi-lb60-audio",
423         .table = {
424                 GPIO_LOOKUP("Bank B", 29, "snd", 0),
425                 GPIO_LOOKUP("Bank D", 4, "amp", 0),
426                 { },
427         },
428 };
429 
430 static struct platform_device *jz_platform_devices[] __initdata = {
431         &jz4740_udc_device,
432         &jz4740_udc_xceiv_device,
433         &jz4740_mmc_device,
434         &jz4740_nand_device,
435         &qi_lb60_keypad,
436         &spigpio_device,
437         &jz4740_framebuffer_device,
438         &jz4740_pcm_device,
439         &jz4740_i2s_device,
440         &jz4740_codec_device,
441         &jz4740_rtc_device,
442         &jz4740_adc_device,
443         &jz4740_pwm_device,
444         &jz4740_dma_device,
445         &qi_lb60_gpio_keys,
446         &qi_lb60_pwm_beeper,
447         &qi_lb60_charger_device,
448         &qi_lb60_audio_device,
449 };
450 
451 static void __init board_gpio_setup(void)
452 {
453         /* We only need to enable/disable pullup here for pins used in generic
454          * drivers. Everything else is done by the drivers themselves. */
455         jz_gpio_disable_pullup(QI_LB60_GPIO_SD_VCC_EN_N);
456         jz_gpio_disable_pullup(QI_LB60_GPIO_SD_CD);
457 }
458 
459 static int __init qi_lb60_init_platform_devices(void)
460 {
461         jz4740_framebuffer_device.dev.platform_data = &qi_lb60_fb_pdata;
462         jz4740_nand_device.dev.platform_data = &qi_lb60_nand_pdata;
463         jz4740_adc_device.dev.platform_data = &qi_lb60_battery_pdata;
464         jz4740_mmc_device.dev.platform_data = &qi_lb60_mmc_pdata;
465 
466         gpiod_add_lookup_table(&qi_lb60_audio_gpio_table);
467         gpiod_add_lookup_table(&qi_lb60_nand_gpio_table);
468 
469         spi_register_board_info(qi_lb60_spi_board_info,
470                                 ARRAY_SIZE(qi_lb60_spi_board_info));
471 
472         pwm_add_table(qi_lb60_pwm_lookup, ARRAY_SIZE(qi_lb60_pwm_lookup));
473 
474         return platform_add_devices(jz_platform_devices,
475                                         ARRAY_SIZE(jz_platform_devices));
476 
477 }
478 
479 static int __init qi_lb60_board_setup(void)
480 {
481         printk(KERN_INFO "Qi Hardware JZ4740 QI LB60 setup\n");
482 
483         board_gpio_setup();
484 
485         if (qi_lb60_init_platform_devices())
486                 panic("Failed to initialize platform devices");
487 
488         return 0;
489 }
490 arch_initcall(qi_lb60_board_setup);
491 

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