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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 static bool is_avt2;
 43 
 44 /* GPIOs */
 45 #define QI_LB60_GPIO_SD_CD              JZ_GPIO_PORTD(0)
 46 #define QI_LB60_GPIO_SD_VCC_EN_N        JZ_GPIO_PORTD(2)
 47 
 48 #define QI_LB60_GPIO_KEYOUT(x)          (JZ_GPIO_PORTC(10) + (x))
 49 #define QI_LB60_GPIO_KEYIN(x)           (JZ_GPIO_PORTD(18) + (x))
 50 #define QI_LB60_GPIO_KEYIN8             JZ_GPIO_PORTD(26)
 51 
 52 /* NAND */
 53 static struct nand_ecclayout qi_lb60_ecclayout_1gb = {
 54         .eccbytes = 36,
 55         .eccpos = {
 56                 6,  7,  8,  9,  10, 11, 12, 13,
 57                 14, 15, 16, 17, 18, 19, 20, 21,
 58                 22, 23, 24, 25, 26, 27, 28, 29,
 59                 30, 31, 32, 33, 34, 35, 36, 37,
 60                 38, 39, 40, 41
 61         },
 62         .oobfree = {
 63                 { .offset = 2, .length = 4 },
 64                 { .offset = 42, .length = 22 }
 65         },
 66 };
 67 
 68 /* Early prototypes of the QI LB60 had only 1GB of NAND.
 69  * In order to support these devices as well the partition and ecc layout is
 70  * initialized depending on the NAND size */
 71 static struct mtd_partition qi_lb60_partitions_1gb[] = {
 72         {
 73                 .name = "NAND BOOT partition",
 74                 .offset = 0 * 0x100000,
 75                 .size = 4 * 0x100000,
 76         },
 77         {
 78                 .name = "NAND KERNEL partition",
 79                 .offset = 4 * 0x100000,
 80                 .size = 4 * 0x100000,
 81         },
 82         {
 83                 .name = "NAND ROOTFS partition",
 84                 .offset = 8 * 0x100000,
 85                 .size = (504 + 512) * 0x100000,
 86         },
 87 };
 88 
 89 static struct nand_ecclayout qi_lb60_ecclayout_2gb = {
 90         .eccbytes = 72,
 91         .eccpos = {
 92                 12, 13, 14, 15, 16, 17, 18, 19,
 93                 20, 21, 22, 23, 24, 25, 26, 27,
 94                 28, 29, 30, 31, 32, 33, 34, 35,
 95                 36, 37, 38, 39, 40, 41, 42, 43,
 96                 44, 45, 46, 47, 48, 49, 50, 51,
 97                 52, 53, 54, 55, 56, 57, 58, 59,
 98                 60, 61, 62, 63, 64, 65, 66, 67,
 99                 68, 69, 70, 71, 72, 73, 74, 75,
100                 76, 77, 78, 79, 80, 81, 82, 83
101         },
102         .oobfree = {
103                 { .offset = 2, .length = 10 },
104                 { .offset = 84, .length = 44 },
105         },
106 };
107 
108 static struct mtd_partition qi_lb60_partitions_2gb[] = {
109         {
110                 .name = "NAND BOOT partition",
111                 .offset = 0 * 0x100000,
112                 .size = 4 * 0x100000,
113         },
114         {
115                 .name = "NAND KERNEL partition",
116                 .offset = 4 * 0x100000,
117                 .size = 4 * 0x100000,
118         },
119         {
120                 .name = "NAND ROOTFS partition",
121                 .offset = 8 * 0x100000,
122                 .size = (504 + 512 + 1024) * 0x100000,
123         },
124 };
125 
126 static void qi_lb60_nand_ident(struct platform_device *pdev,
127                 struct nand_chip *chip, struct mtd_partition **partitions,
128                 int *num_partitions)
129 {
130         if (chip->page_shift == 12) {
131                 chip->ecc.layout = &qi_lb60_ecclayout_2gb;
132                 *partitions = qi_lb60_partitions_2gb;
133                 *num_partitions = ARRAY_SIZE(qi_lb60_partitions_2gb);
134         } else {
135                 chip->ecc.layout = &qi_lb60_ecclayout_1gb;
136                 *partitions = qi_lb60_partitions_1gb;
137                 *num_partitions = ARRAY_SIZE(qi_lb60_partitions_1gb);
138         }
139 }
140 
141 static struct jz_nand_platform_data qi_lb60_nand_pdata = {
142         .ident_callback = qi_lb60_nand_ident,
143         .banks = { 1 },
144 };
145 
146 static struct gpiod_lookup_table qi_lb60_nand_gpio_table = {
147         .dev_id = "jz4740-nand.0",
148         .table = {
149                 GPIO_LOOKUP("Bank C", 30, "busy", 0),
150                 { },
151         },
152 };
153 
154 
155 /* Keyboard*/
156 
157 #define KEY_QI_QI       KEY_F13
158 #define KEY_QI_UPRED    KEY_RIGHTALT
159 #define KEY_QI_VOLUP    KEY_VOLUMEUP
160 #define KEY_QI_VOLDOWN  KEY_VOLUMEDOWN
161 #define KEY_QI_FN       KEY_LEFTCTRL
162 
163 static const uint32_t qi_lb60_keymap[] = {
164         KEY(0, 0, KEY_F1),      /* S2 */
165         KEY(0, 1, KEY_F2),      /* S3 */
166         KEY(0, 2, KEY_F3),      /* S4 */
167         KEY(0, 3, KEY_F4),      /* S5 */
168         KEY(0, 4, KEY_F5),      /* S6 */
169         KEY(0, 5, KEY_F6),      /* S7 */
170         KEY(0, 6, KEY_F7),      /* S8 */
171 
172         KEY(1, 0, KEY_Q),       /* S10 */
173         KEY(1, 1, KEY_W),       /* S11 */
174         KEY(1, 2, KEY_E),       /* S12 */
175         KEY(1, 3, KEY_R),       /* S13 */
176         KEY(1, 4, KEY_T),       /* S14 */
177         KEY(1, 5, KEY_Y),       /* S15 */
178         KEY(1, 6, KEY_U),       /* S16 */
179         KEY(1, 7, KEY_I),       /* S17 */
180         KEY(2, 0, KEY_A),       /* S18 */
181         KEY(2, 1, KEY_S),       /* S19 */
182         KEY(2, 2, KEY_D),       /* S20 */
183         KEY(2, 3, KEY_F),       /* S21 */
184         KEY(2, 4, KEY_G),       /* S22 */
185         KEY(2, 5, KEY_H),       /* S23 */
186         KEY(2, 6, KEY_J),       /* S24 */
187         KEY(2, 7, KEY_K),       /* S25 */
188         KEY(3, 0, KEY_ESC),     /* S26 */
189         KEY(3, 1, KEY_Z),       /* S27 */
190         KEY(3, 2, KEY_X),       /* S28 */
191         KEY(3, 3, KEY_C),       /* S29 */
192         KEY(3, 4, KEY_V),       /* S30 */
193         KEY(3, 5, KEY_B),       /* S31 */
194         KEY(3, 6, KEY_N),       /* S32 */
195         KEY(3, 7, KEY_M),       /* S33 */
196         KEY(4, 0, KEY_TAB),     /* S34 */
197         KEY(4, 1, KEY_CAPSLOCK),        /* S35 */
198         KEY(4, 2, KEY_BACKSLASH),       /* S36 */
199         KEY(4, 3, KEY_APOSTROPHE),      /* S37 */
200         KEY(4, 4, KEY_COMMA),   /* S38 */
201         KEY(4, 5, KEY_DOT),     /* S39 */
202         KEY(4, 6, KEY_SLASH),   /* S40 */
203         KEY(4, 7, KEY_UP),      /* S41 */
204         KEY(5, 0, KEY_O),       /* S42 */
205         KEY(5, 1, KEY_L),       /* S43 */
206         KEY(5, 2, KEY_EQUAL),   /* S44 */
207         KEY(5, 3, KEY_QI_UPRED),        /* S45 */
208         KEY(5, 4, KEY_SPACE),   /* S46 */
209         KEY(5, 5, KEY_QI_QI),   /* S47 */
210         KEY(5, 6, KEY_RIGHTCTRL),       /* S48 */
211         KEY(5, 7, KEY_LEFT),    /* S49 */
212         KEY(6, 0, KEY_F8),      /* S50 */
213         KEY(6, 1, KEY_P),       /* S51 */
214         KEY(6, 2, KEY_BACKSPACE),/* S52 */
215         KEY(6, 3, KEY_ENTER),   /* S53 */
216         KEY(6, 4, KEY_QI_VOLUP),        /* S54 */
217         KEY(6, 5, KEY_QI_VOLDOWN),      /* S55 */
218         KEY(6, 6, KEY_DOWN),    /* S56 */
219         KEY(6, 7, KEY_RIGHT),   /* S57 */
220 
221         KEY(7, 0, KEY_LEFTSHIFT),       /* S58 */
222         KEY(7, 1, KEY_LEFTALT), /* S59 */
223         KEY(7, 2, KEY_QI_FN),   /* S60 */
224 };
225 
226 static const struct matrix_keymap_data qi_lb60_keymap_data = {
227         .keymap         = qi_lb60_keymap,
228         .keymap_size    = ARRAY_SIZE(qi_lb60_keymap),
229 };
230 
231 static const unsigned int qi_lb60_keypad_cols[] = {
232         QI_LB60_GPIO_KEYOUT(0),
233         QI_LB60_GPIO_KEYOUT(1),
234         QI_LB60_GPIO_KEYOUT(2),
235         QI_LB60_GPIO_KEYOUT(3),
236         QI_LB60_GPIO_KEYOUT(4),
237         QI_LB60_GPIO_KEYOUT(5),
238         QI_LB60_GPIO_KEYOUT(6),
239         QI_LB60_GPIO_KEYOUT(7),
240 };
241 
242 static const unsigned int qi_lb60_keypad_rows[] = {
243         QI_LB60_GPIO_KEYIN(0),
244         QI_LB60_GPIO_KEYIN(1),
245         QI_LB60_GPIO_KEYIN(2),
246         QI_LB60_GPIO_KEYIN(3),
247         QI_LB60_GPIO_KEYIN(4),
248         QI_LB60_GPIO_KEYIN(5),
249         QI_LB60_GPIO_KEYIN(6),
250         QI_LB60_GPIO_KEYIN8,
251 };
252 
253 static struct matrix_keypad_platform_data qi_lb60_pdata = {
254         .keymap_data = &qi_lb60_keymap_data,
255         .col_gpios      = qi_lb60_keypad_cols,
256         .row_gpios      = qi_lb60_keypad_rows,
257         .num_col_gpios  = ARRAY_SIZE(qi_lb60_keypad_cols),
258         .num_row_gpios  = ARRAY_SIZE(qi_lb60_keypad_rows),
259         .col_scan_delay_us      = 10,
260         .debounce_ms            = 10,
261         .wakeup                 = 1,
262         .active_low             = 1,
263 };
264 
265 static struct platform_device qi_lb60_keypad = {
266         .name           = "matrix-keypad",
267         .id             = -1,
268         .dev            = {
269                 .platform_data = &qi_lb60_pdata,
270         },
271 };
272 
273 /* Display */
274 static struct fb_videomode qi_lb60_video_modes[] = {
275         {
276                 .name = "320x240",
277                 .xres = 320,
278                 .yres = 240,
279                 .refresh = 30,
280                 .left_margin = 140,
281                 .right_margin = 273,
282                 .upper_margin = 20,
283                 .lower_margin = 2,
284                 .hsync_len = 1,
285                 .vsync_len = 1,
286                 .sync = 0,
287                 .vmode = FB_VMODE_NONINTERLACED,
288         },
289 };
290 
291 static struct jz4740_fb_platform_data qi_lb60_fb_pdata = {
292         .width          = 60,
293         .height         = 45,
294         .num_modes      = ARRAY_SIZE(qi_lb60_video_modes),
295         .modes          = qi_lb60_video_modes,
296         .bpp            = 24,
297         .lcd_type       = JZ_LCD_TYPE_8BIT_SERIAL,
298         .pixclk_falling_edge = 1,
299 };
300 
301 struct spi_gpio_platform_data spigpio_platform_data = {
302         .sck = JZ_GPIO_PORTC(23),
303         .mosi = JZ_GPIO_PORTC(22),
304         .miso = -1,
305         .num_chipselect = 1,
306 };
307 
308 static struct platform_device spigpio_device = {
309         .name = "spi_gpio",
310         .id   = 1,
311         .dev = {
312                 .platform_data = &spigpio_platform_data,
313         },
314 };
315 
316 static struct spi_board_info qi_lb60_spi_board_info[] = {
317         {
318                 .modalias = "ili8960",
319                 .controller_data = (void *)JZ_GPIO_PORTC(21),
320                 .chip_select = 0,
321                 .bus_num = 1,
322                 .max_speed_hz = 30 * 1000,
323                 .mode = SPI_3WIRE,
324         },
325 };
326 
327 /* Battery */
328 static struct jz_battery_platform_data qi_lb60_battery_pdata = {
329         .gpio_charge =  JZ_GPIO_PORTC(27),
330         .gpio_charge_active_low = 1,
331         .info = {
332                 .name = "battery",
333                 .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
334                 .voltage_max_design = 4200000,
335                 .voltage_min_design = 3600000,
336         },
337 };
338 
339 /* GPIO Key: power */
340 static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = {
341         [0] = {
342                 .code           = KEY_POWER,
343                 .gpio           = JZ_GPIO_PORTD(29),
344                 .active_low     = 1,
345                 .desc           = "Power",
346                 .wakeup         = 1,
347         },
348 };
349 
350 static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = {
351         .nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons),
352         .buttons = qi_lb60_gpio_keys_buttons,
353 };
354 
355 static struct platform_device qi_lb60_gpio_keys = {
356         .name = "gpio-keys",
357         .id =   -1,
358         .dev = {
359                 .platform_data = &qi_lb60_gpio_keys_data,
360         }
361 };
362 
363 static struct jz4740_mmc_platform_data qi_lb60_mmc_pdata = {
364         .gpio_card_detect       = QI_LB60_GPIO_SD_CD,
365         .gpio_read_only         = -1,
366         .gpio_power             = QI_LB60_GPIO_SD_VCC_EN_N,
367         .power_active_low       = 1,
368 };
369 
370 /* OHCI */
371 static struct regulator_consumer_supply avt2_usb_regulator_consumer =
372         REGULATOR_SUPPLY("vbus", "jz4740-ohci");
373 
374 static struct regulator_init_data avt2_usb_regulator_init_data = {
375         .num_consumer_supplies = 1,
376         .consumer_supplies = &avt2_usb_regulator_consumer,
377         .constraints = {
378                 .name = "USB power",
379                 .min_uV = 5000000,
380                 .max_uV = 5000000,
381                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
382                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
383         },
384 };
385 
386 static struct fixed_voltage_config avt2_usb_regulator_data = {
387         .supply_name = "USB power",
388         .microvolts = 5000000,
389         .gpio = JZ_GPIO_PORTB(17),
390         .init_data = &avt2_usb_regulator_init_data,
391 };
392 
393 static struct platform_device avt2_usb_regulator_device = {
394         .name = "reg-fixed-voltage",
395         .id = -1,
396         .dev = {
397                 .platform_data = &avt2_usb_regulator_data,
398         }
399 };
400 
401 static struct pwm_lookup qi_lb60_pwm_lookup[] = {
402         PWM_LOOKUP("jz4740-pwm", 4, "pwm-beeper", NULL, 0,
403                    PWM_POLARITY_NORMAL),
404 };
405 
406 /* beeper */
407 static struct platform_device qi_lb60_pwm_beeper = {
408         .name = "pwm-beeper",
409         .id = -1,
410 };
411 
412 /* charger */
413 static char *qi_lb60_batteries[] = {
414         "battery",
415 };
416 
417 static struct gpio_charger_platform_data qi_lb60_charger_pdata = {
418         .name = "usb",
419         .type = POWER_SUPPLY_TYPE_USB,
420         .gpio = JZ_GPIO_PORTD(28),
421         .gpio_active_low = 1,
422         .supplied_to = qi_lb60_batteries,
423         .num_supplicants = ARRAY_SIZE(qi_lb60_batteries),
424 };
425 
426 static struct platform_device qi_lb60_charger_device = {
427         .name = "gpio-charger",
428         .dev = {
429                 .platform_data = &qi_lb60_charger_pdata,
430         },
431 };
432 
433 /* audio */
434 static struct platform_device qi_lb60_audio_device = {
435         .name = "qi-lb60-audio",
436         .id = -1,
437 };
438 
439 static struct gpiod_lookup_table qi_lb60_audio_gpio_table = {
440         .dev_id = "qi-lb60-audio",
441         .table = {
442                 GPIO_LOOKUP("Bank B", 29, "snd", 0),
443                 GPIO_LOOKUP("Bank D", 4, "amp", 0),
444                 { },
445         },
446 };
447 
448 static struct platform_device *jz_platform_devices[] __initdata = {
449         &jz4740_udc_device,
450         &jz4740_udc_xceiv_device,
451         &jz4740_mmc_device,
452         &jz4740_nand_device,
453         &qi_lb60_keypad,
454         &spigpio_device,
455         &jz4740_framebuffer_device,
456         &jz4740_pcm_device,
457         &jz4740_i2s_device,
458         &jz4740_codec_device,
459         &jz4740_rtc_device,
460         &jz4740_adc_device,
461         &jz4740_pwm_device,
462         &jz4740_dma_device,
463         &qi_lb60_gpio_keys,
464         &qi_lb60_pwm_beeper,
465         &qi_lb60_charger_device,
466         &qi_lb60_audio_device,
467 };
468 
469 static void __init board_gpio_setup(void)
470 {
471         /* We only need to enable/disable pullup here for pins used in generic
472          * drivers. Everything else is done by the drivers themselves. */
473         jz_gpio_disable_pullup(QI_LB60_GPIO_SD_VCC_EN_N);
474         jz_gpio_disable_pullup(QI_LB60_GPIO_SD_CD);
475 }
476 
477 static int __init qi_lb60_init_platform_devices(void)
478 {
479         jz4740_framebuffer_device.dev.platform_data = &qi_lb60_fb_pdata;
480         jz4740_nand_device.dev.platform_data = &qi_lb60_nand_pdata;
481         jz4740_adc_device.dev.platform_data = &qi_lb60_battery_pdata;
482         jz4740_mmc_device.dev.platform_data = &qi_lb60_mmc_pdata;
483 
484         gpiod_add_lookup_table(&qi_lb60_audio_gpio_table);
485         gpiod_add_lookup_table(&qi_lb60_nand_gpio_table);
486 
487         spi_register_board_info(qi_lb60_spi_board_info,
488                                 ARRAY_SIZE(qi_lb60_spi_board_info));
489 
490         if (is_avt2) {
491                 platform_device_register(&avt2_usb_regulator_device);
492                 platform_device_register(&jz4740_usb_ohci_device);
493         }
494 
495         pwm_add_table(qi_lb60_pwm_lookup, ARRAY_SIZE(qi_lb60_pwm_lookup));
496 
497         return platform_add_devices(jz_platform_devices,
498                                         ARRAY_SIZE(jz_platform_devices));
499 
500 }
501 
502 static __init int board_avt2(char *str)
503 {
504         qi_lb60_mmc_pdata.card_detect_active_low = 1;
505         is_avt2 = true;
506 
507         return 1;
508 }
509 __setup("avt2", board_avt2);
510 
511 static int __init qi_lb60_board_setup(void)
512 {
513         printk(KERN_INFO "Qi Hardware JZ4740 QI %s setup\n",
514                 is_avt2 ? "AVT2" : "LB60");
515 
516         board_gpio_setup();
517 
518         if (qi_lb60_init_platform_devices())
519                 panic("Failed to initialize platform devices");
520 
521         return 0;
522 }
523 arch_initcall(qi_lb60_board_setup);
524 

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