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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 
29 #include <asm/mach-jz4740/gpio.h>
30 #include <asm/mach-jz4740/jz4740_fb.h>
31 #include <asm/mach-jz4740/jz4740_mmc.h>
32 #include <asm/mach-jz4740/jz4740_nand.h>
33 
34 #include <linux/regulator/fixed.h>
35 #include <linux/regulator/machine.h>
36 
37 #include <linux/leds_pwm.h>
38 
39 #include <asm/mach-jz4740/platform.h>
40 
41 #include "clock.h"
42 
43 static bool is_avt2;
44 
45 /* GPIOs */
46 #define QI_LB60_GPIO_SD_CD		JZ_GPIO_PORTD(0)
47 #define QI_LB60_GPIO_SD_VCC_EN_N	JZ_GPIO_PORTD(2)
48 
49 #define QI_LB60_GPIO_KEYOUT(x)		(JZ_GPIO_PORTC(10) + (x))
50 #define QI_LB60_GPIO_KEYIN(x)		(JZ_GPIO_PORTD(18) + (x))
51 #define QI_LB60_GPIO_KEYIN8		JZ_GPIO_PORTD(26)
52 
53 /* NAND */
54 static struct nand_ecclayout qi_lb60_ecclayout_1gb = {
55 	.eccbytes = 36,
56 	.eccpos = {
57 		6,  7,	8,  9,	10, 11, 12, 13,
58 		14, 15, 16, 17, 18, 19, 20, 21,
59 		22, 23, 24, 25, 26, 27, 28, 29,
60 		30, 31, 32, 33, 34, 35, 36, 37,
61 		38, 39, 40, 41
62 	},
63 	.oobfree = {
64 		{ .offset = 2, .length = 4 },
65 		{ .offset = 42, .length = 22 }
66 	},
67 };
68 
69 /* Early prototypes of the QI LB60 had only 1GB of NAND.
70  * In order to support these devices as well the partition and ecc layout is
71  * initialized depending on the NAND size */
72 static struct mtd_partition qi_lb60_partitions_1gb[] = {
73 	{
74 		.name = "NAND BOOT partition",
75 		.offset = 0 * 0x100000,
76 		.size = 4 * 0x100000,
77 	},
78 	{
79 		.name = "NAND KERNEL partition",
80 		.offset = 4 * 0x100000,
81 		.size = 4 * 0x100000,
82 	},
83 	{
84 		.name = "NAND ROOTFS partition",
85 		.offset = 8 * 0x100000,
86 		.size = (504 + 512) * 0x100000,
87 	},
88 };
89 
90 static struct nand_ecclayout qi_lb60_ecclayout_2gb = {
91 	.eccbytes = 72,
92 	.eccpos = {
93 		12, 13, 14, 15, 16, 17, 18, 19,
94 		20, 21, 22, 23, 24, 25, 26, 27,
95 		28, 29, 30, 31, 32, 33, 34, 35,
96 		36, 37, 38, 39, 40, 41, 42, 43,
97 		44, 45, 46, 47, 48, 49, 50, 51,
98 		52, 53, 54, 55, 56, 57, 58, 59,
99 		60, 61, 62, 63, 64, 65, 66, 67,
100 		68, 69, 70, 71, 72, 73, 74, 75,
101 		76, 77, 78, 79, 80, 81, 82, 83
102 	},
103 	.oobfree = {
104 		{ .offset = 2, .length = 10 },
105 		{ .offset = 84, .length = 44 },
106 	},
107 };
108 
109 static struct mtd_partition qi_lb60_partitions_2gb[] = {
110 	{
111 		.name = "NAND BOOT partition",
112 		.offset = 0 * 0x100000,
113 		.size = 4 * 0x100000,
114 	},
115 	{
116 		.name = "NAND KERNEL partition",
117 		.offset = 4 * 0x100000,
118 		.size = 4 * 0x100000,
119 	},
120 	{
121 		.name = "NAND ROOTFS partition",
122 		.offset = 8 * 0x100000,
123 		.size = (504 + 512 + 1024) * 0x100000,
124 	},
125 };
126 
qi_lb60_nand_ident(struct platform_device * pdev,struct nand_chip * chip,struct mtd_partition ** partitions,int * num_partitions)127 static void qi_lb60_nand_ident(struct platform_device *pdev,
128 		struct nand_chip *chip, struct mtd_partition **partitions,
129 		int *num_partitions)
130 {
131 	if (chip->page_shift == 12) {
132 		chip->ecc.layout = &qi_lb60_ecclayout_2gb;
133 		*partitions = qi_lb60_partitions_2gb;
134 		*num_partitions = ARRAY_SIZE(qi_lb60_partitions_2gb);
135 	} else {
136 		chip->ecc.layout = &qi_lb60_ecclayout_1gb;
137 		*partitions = qi_lb60_partitions_1gb;
138 		*num_partitions = ARRAY_SIZE(qi_lb60_partitions_1gb);
139 	}
140 }
141 
142 static struct jz_nand_platform_data qi_lb60_nand_pdata = {
143 	.ident_callback = qi_lb60_nand_ident,
144 	.busy_gpio = 94,
145 	.banks = { 1 },
146 };
147 
148 /* Keyboard*/
149 
150 #define KEY_QI_QI	KEY_F13
151 #define KEY_QI_UPRED	KEY_RIGHTALT
152 #define KEY_QI_VOLUP	KEY_VOLUMEUP
153 #define KEY_QI_VOLDOWN	KEY_VOLUMEDOWN
154 #define KEY_QI_FN	KEY_LEFTCTRL
155 
156 static const uint32_t qi_lb60_keymap[] = {
157 	KEY(0, 0, KEY_F1),	/* S2 */
158 	KEY(0, 1, KEY_F2),	/* S3 */
159 	KEY(0, 2, KEY_F3),	/* S4 */
160 	KEY(0, 3, KEY_F4),	/* S5 */
161 	KEY(0, 4, KEY_F5),	/* S6 */
162 	KEY(0, 5, KEY_F6),	/* S7 */
163 	KEY(0, 6, KEY_F7),	/* S8 */
164 
165 	KEY(1, 0, KEY_Q),	/* S10 */
166 	KEY(1, 1, KEY_W),	/* S11 */
167 	KEY(1, 2, KEY_E),	/* S12 */
168 	KEY(1, 3, KEY_R),	/* S13 */
169 	KEY(1, 4, KEY_T),	/* S14 */
170 	KEY(1, 5, KEY_Y),	/* S15 */
171 	KEY(1, 6, KEY_U),	/* S16 */
172 	KEY(1, 7, KEY_I),	/* S17 */
173 	KEY(2, 0, KEY_A),	/* S18 */
174 	KEY(2, 1, KEY_S),	/* S19 */
175 	KEY(2, 2, KEY_D),	/* S20 */
176 	KEY(2, 3, KEY_F),	/* S21 */
177 	KEY(2, 4, KEY_G),	/* S22 */
178 	KEY(2, 5, KEY_H),	/* S23 */
179 	KEY(2, 6, KEY_J),	/* S24 */
180 	KEY(2, 7, KEY_K),	/* S25 */
181 	KEY(3, 0, KEY_ESC),	/* S26 */
182 	KEY(3, 1, KEY_Z),	/* S27 */
183 	KEY(3, 2, KEY_X),	/* S28 */
184 	KEY(3, 3, KEY_C),	/* S29 */
185 	KEY(3, 4, KEY_V),	/* S30 */
186 	KEY(3, 5, KEY_B),	/* S31 */
187 	KEY(3, 6, KEY_N),	/* S32 */
188 	KEY(3, 7, KEY_M),	/* S33 */
189 	KEY(4, 0, KEY_TAB),	/* S34 */
190 	KEY(4, 1, KEY_CAPSLOCK),	/* S35 */
191 	KEY(4, 2, KEY_BACKSLASH),	/* S36 */
192 	KEY(4, 3, KEY_APOSTROPHE),	/* S37 */
193 	KEY(4, 4, KEY_COMMA),	/* S38 */
194 	KEY(4, 5, KEY_DOT),	/* S39 */
195 	KEY(4, 6, KEY_SLASH),	/* S40 */
196 	KEY(4, 7, KEY_UP),	/* S41 */
197 	KEY(5, 0, KEY_O),	/* S42 */
198 	KEY(5, 1, KEY_L),	/* S43 */
199 	KEY(5, 2, KEY_EQUAL),	/* S44 */
200 	KEY(5, 3, KEY_QI_UPRED),	/* S45 */
201 	KEY(5, 4, KEY_SPACE),	/* S46 */
202 	KEY(5, 5, KEY_QI_QI),	/* S47 */
203 	KEY(5, 6, KEY_RIGHTCTRL),	/* S48 */
204 	KEY(5, 7, KEY_LEFT),	/* S49 */
205 	KEY(6, 0, KEY_F8),	/* S50 */
206 	KEY(6, 1, KEY_P),	/* S51 */
207 	KEY(6, 2, KEY_BACKSPACE),/* S52 */
208 	KEY(6, 3, KEY_ENTER),	/* S53 */
209 	KEY(6, 4, KEY_QI_VOLUP),	/* S54 */
210 	KEY(6, 5, KEY_QI_VOLDOWN),	/* S55 */
211 	KEY(6, 6, KEY_DOWN),	/* S56 */
212 	KEY(6, 7, KEY_RIGHT),	/* S57 */
213 
214 	KEY(7, 0, KEY_LEFTSHIFT),	/* S58 */
215 	KEY(7, 1, KEY_LEFTALT), /* S59 */
216 	KEY(7, 2, KEY_QI_FN),	/* S60 */
217 };
218 
219 static const struct matrix_keymap_data qi_lb60_keymap_data = {
220 	.keymap		= qi_lb60_keymap,
221 	.keymap_size	= ARRAY_SIZE(qi_lb60_keymap),
222 };
223 
224 static const unsigned int qi_lb60_keypad_cols[] = {
225 	QI_LB60_GPIO_KEYOUT(0),
226 	QI_LB60_GPIO_KEYOUT(1),
227 	QI_LB60_GPIO_KEYOUT(2),
228 	QI_LB60_GPIO_KEYOUT(3),
229 	QI_LB60_GPIO_KEYOUT(4),
230 	QI_LB60_GPIO_KEYOUT(5),
231 	QI_LB60_GPIO_KEYOUT(6),
232 	QI_LB60_GPIO_KEYOUT(7),
233 };
234 
235 static const unsigned int qi_lb60_keypad_rows[] = {
236 	QI_LB60_GPIO_KEYIN(0),
237 	QI_LB60_GPIO_KEYIN(1),
238 	QI_LB60_GPIO_KEYIN(2),
239 	QI_LB60_GPIO_KEYIN(3),
240 	QI_LB60_GPIO_KEYIN(4),
241 	QI_LB60_GPIO_KEYIN(5),
242 	QI_LB60_GPIO_KEYIN(6),
243 	QI_LB60_GPIO_KEYIN8,
244 };
245 
246 static struct matrix_keypad_platform_data qi_lb60_pdata = {
247 	.keymap_data = &qi_lb60_keymap_data,
248 	.col_gpios	= qi_lb60_keypad_cols,
249 	.row_gpios	= qi_lb60_keypad_rows,
250 	.num_col_gpios	= ARRAY_SIZE(qi_lb60_keypad_cols),
251 	.num_row_gpios	= ARRAY_SIZE(qi_lb60_keypad_rows),
252 	.col_scan_delay_us	= 10,
253 	.debounce_ms		= 10,
254 	.wakeup			= 1,
255 	.active_low		= 1,
256 };
257 
258 static struct platform_device qi_lb60_keypad = {
259 	.name		= "matrix-keypad",
260 	.id		= -1,
261 	.dev		= {
262 		.platform_data = &qi_lb60_pdata,
263 	},
264 };
265 
266 /* Display */
267 static struct fb_videomode qi_lb60_video_modes[] = {
268 	{
269 		.name = "320x240",
270 		.xres = 320,
271 		.yres = 240,
272 		.refresh = 30,
273 		.left_margin = 140,
274 		.right_margin = 273,
275 		.upper_margin = 20,
276 		.lower_margin = 2,
277 		.hsync_len = 1,
278 		.vsync_len = 1,
279 		.sync = 0,
280 		.vmode = FB_VMODE_NONINTERLACED,
281 	},
282 };
283 
284 static struct jz4740_fb_platform_data qi_lb60_fb_pdata = {
285 	.width		= 60,
286 	.height		= 45,
287 	.num_modes	= ARRAY_SIZE(qi_lb60_video_modes),
288 	.modes		= qi_lb60_video_modes,
289 	.bpp		= 24,
290 	.lcd_type	= JZ_LCD_TYPE_8BIT_SERIAL,
291 	.pixclk_falling_edge = 1,
292 };
293 
294 struct spi_gpio_platform_data spigpio_platform_data = {
295 	.sck = JZ_GPIO_PORTC(23),
296 	.mosi = JZ_GPIO_PORTC(22),
297 	.miso = -1,
298 	.num_chipselect = 1,
299 };
300 
301 static struct platform_device spigpio_device = {
302 	.name = "spi_gpio",
303 	.id   = 1,
304 	.dev = {
305 		.platform_data = &spigpio_platform_data,
306 	},
307 };
308 
309 static struct spi_board_info qi_lb60_spi_board_info[] = {
310 	{
311 		.modalias = "ili8960",
312 		.controller_data = (void *)JZ_GPIO_PORTC(21),
313 		.chip_select = 0,
314 		.bus_num = 1,
315 		.max_speed_hz = 30 * 1000,
316 		.mode = SPI_3WIRE,
317 	},
318 };
319 
320 /* Battery */
321 static struct jz_battery_platform_data qi_lb60_battery_pdata = {
322 	.gpio_charge =	JZ_GPIO_PORTC(27),
323 	.gpio_charge_active_low = 1,
324 	.info = {
325 		.name = "battery",
326 		.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
327 		.voltage_max_design = 4200000,
328 		.voltage_min_design = 3600000,
329 	},
330 };
331 
332 /* GPIO Key: power */
333 static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = {
334 	[0] = {
335 		.code		= KEY_POWER,
336 		.gpio		= JZ_GPIO_PORTD(29),
337 		.active_low	= 1,
338 		.desc		= "Power",
339 		.wakeup		= 1,
340 	},
341 };
342 
343 static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = {
344 	.nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons),
345 	.buttons = qi_lb60_gpio_keys_buttons,
346 };
347 
348 static struct platform_device qi_lb60_gpio_keys = {
349 	.name = "gpio-keys",
350 	.id =	-1,
351 	.dev = {
352 		.platform_data = &qi_lb60_gpio_keys_data,
353 	}
354 };
355 
356 static struct jz4740_mmc_platform_data qi_lb60_mmc_pdata = {
357 	.gpio_card_detect	= QI_LB60_GPIO_SD_CD,
358 	.gpio_read_only		= -1,
359 	.gpio_power		= QI_LB60_GPIO_SD_VCC_EN_N,
360 	.power_active_low	= 1,
361 };
362 
363 /* OHCI */
364 static struct regulator_consumer_supply avt2_usb_regulator_consumer =
365 	REGULATOR_SUPPLY("vbus", "jz4740-ohci");
366 
367 static struct regulator_init_data avt2_usb_regulator_init_data = {
368 	.num_consumer_supplies = 1,
369 	.consumer_supplies = &avt2_usb_regulator_consumer,
370 	.constraints = {
371 		.name = "USB power",
372 		.min_uV = 5000000,
373 		.max_uV = 5000000,
374 		.valid_modes_mask = REGULATOR_MODE_NORMAL,
375 		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
376 	},
377 };
378 
379 static struct fixed_voltage_config avt2_usb_regulator_data = {
380 	.supply_name = "USB power",
381 	.microvolts = 5000000,
382 	.gpio = JZ_GPIO_PORTB(17),
383 	.init_data = &avt2_usb_regulator_init_data,
384 };
385 
386 static struct platform_device avt2_usb_regulator_device = {
387 	.name = "reg-fixed-voltage",
388 	.id = -1,
389 	.dev = {
390 		.platform_data = &avt2_usb_regulator_data,
391 	}
392 };
393 
394 /* beeper */
395 static struct platform_device qi_lb60_pwm_beeper = {
396 	.name = "pwm-beeper",
397 	.id = -1,
398 	.dev = {
399 		.platform_data = (void *)4,
400 	},
401 };
402 
403 /* charger */
404 static char *qi_lb60_batteries[] = {
405 	"battery",
406 };
407 
408 static struct gpio_charger_platform_data qi_lb60_charger_pdata = {
409 	.name = "usb",
410 	.type = POWER_SUPPLY_TYPE_USB,
411 	.gpio = JZ_GPIO_PORTD(28),
412 	.gpio_active_low = 1,
413 	.supplied_to = qi_lb60_batteries,
414 	.num_supplicants = ARRAY_SIZE(qi_lb60_batteries),
415 };
416 
417 static struct platform_device qi_lb60_charger_device = {
418 	.name = "gpio-charger",
419 	.dev = {
420 		.platform_data = &qi_lb60_charger_pdata,
421 	},
422 };
423 
424 /* audio */
425 static struct platform_device qi_lb60_audio_device = {
426 	.name = "qi-lb60-audio",
427 	.id = -1,
428 };
429 
430 static struct gpiod_lookup_table qi_lb60_audio_gpio_table = {
431 	.dev_id = "qi-lb60-audio",
432 	.table = {
433 		GPIO_LOOKUP("Bank B", 29, "snd", 0),
434 		GPIO_LOOKUP("Bank D", 4, "amp", 0),
435 		{ },
436 	},
437 };
438 
439 static struct platform_device *jz_platform_devices[] __initdata = {
440 	&jz4740_udc_device,
441 	&jz4740_udc_xceiv_device,
442 	&jz4740_mmc_device,
443 	&jz4740_nand_device,
444 	&qi_lb60_keypad,
445 	&spigpio_device,
446 	&jz4740_framebuffer_device,
447 	&jz4740_pcm_device,
448 	&jz4740_i2s_device,
449 	&jz4740_codec_device,
450 	&jz4740_rtc_device,
451 	&jz4740_adc_device,
452 	&jz4740_pwm_device,
453 	&jz4740_dma_device,
454 	&qi_lb60_gpio_keys,
455 	&qi_lb60_pwm_beeper,
456 	&qi_lb60_charger_device,
457 	&qi_lb60_audio_device,
458 };
459 
board_gpio_setup(void)460 static void __init board_gpio_setup(void)
461 {
462 	/* We only need to enable/disable pullup here for pins used in generic
463 	 * drivers. Everything else is done by the drivers themselves. */
464 	jz_gpio_disable_pullup(QI_LB60_GPIO_SD_VCC_EN_N);
465 	jz_gpio_disable_pullup(QI_LB60_GPIO_SD_CD);
466 }
467 
qi_lb60_init_platform_devices(void)468 static int __init qi_lb60_init_platform_devices(void)
469 {
470 	jz4740_framebuffer_device.dev.platform_data = &qi_lb60_fb_pdata;
471 	jz4740_nand_device.dev.platform_data = &qi_lb60_nand_pdata;
472 	jz4740_adc_device.dev.platform_data = &qi_lb60_battery_pdata;
473 	jz4740_mmc_device.dev.platform_data = &qi_lb60_mmc_pdata;
474 
475 	gpiod_add_lookup_table(&qi_lb60_audio_gpio_table);
476 
477 	jz4740_serial_device_register();
478 
479 	spi_register_board_info(qi_lb60_spi_board_info,
480 				ARRAY_SIZE(qi_lb60_spi_board_info));
481 
482 	if (is_avt2) {
483 		platform_device_register(&avt2_usb_regulator_device);
484 		platform_device_register(&jz4740_usb_ohci_device);
485 	}
486 
487 	return platform_add_devices(jz_platform_devices,
488 					ARRAY_SIZE(jz_platform_devices));
489 
490 }
491 
492 struct jz4740_clock_board_data jz4740_clock_bdata = {
493 	.ext_rate = 12000000,
494 	.rtc_rate = 32768,
495 };
496 
board_avt2(char * str)497 static __init int board_avt2(char *str)
498 {
499 	qi_lb60_mmc_pdata.card_detect_active_low = 1;
500 	is_avt2 = true;
501 
502 	return 1;
503 }
504 __setup("avt2", board_avt2);
505 
qi_lb60_board_setup(void)506 static int __init qi_lb60_board_setup(void)
507 {
508 	printk(KERN_INFO "Qi Hardware JZ4740 QI %s setup\n",
509 		is_avt2 ? "AVT2" : "LB60");
510 
511 	board_gpio_setup();
512 
513 	if (qi_lb60_init_platform_devices())
514 		panic("Failed to initialize platform devices");
515 
516 	return 0;
517 }
518 arch_initcall(qi_lb60_board_setup);
519