1 /*
2 * Support for CompuLab EM-X270 platform
3 *
4 * Copyright (C) 2007, 2008 CompuLab, Ltd.
5 * Author: Mike Rapoport <mike@compulab.co.il>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/irq.h>
13 #include <linux/platform_device.h>
14
15 #include <linux/dm9000.h>
16 #include <linux/rtc-v3020.h>
17 #include <linux/mtd/nand.h>
18 #include <linux/mtd/partitions.h>
19 #include <linux/input.h>
20 #include <linux/gpio_keys.h>
21 #include <linux/gpio.h>
22
23 #include <asm/mach-types.h>
24 #include <asm/mach/arch.h>
25
26 #include <mach/mfp-pxa27x.h>
27 #include <mach/pxa-regs.h>
28 #include <mach/pxa27x-udc.h>
29 #include <mach/audio.h>
30 #include <mach/pxafb.h>
31 #include <mach/ohci.h>
32 #include <mach/mmc.h>
33 #include <mach/pxa27x_keypad.h>
34
35 #include "generic.h"
36
37 /* GPIO IRQ usage */
38 #define GPIO41_ETHIRQ (41)
39 #define GPIO13_MMC_CD (13)
40 #define EM_X270_ETHIRQ IRQ_GPIO(GPIO41_ETHIRQ)
41 #define EM_X270_MMC_CD IRQ_GPIO(GPIO13_MMC_CD)
42
43 /* NAND control GPIOs */
44 #define GPIO11_NAND_CS (11)
45 #define GPIO56_NAND_RB (56)
46
47 static unsigned long em_x270_pin_config[] = {
48 /* AC'97 */
49 GPIO28_AC97_BITCLK,
50 GPIO29_AC97_SDATA_IN_0,
51 GPIO30_AC97_SDATA_OUT,
52 GPIO31_AC97_SYNC,
53 GPIO98_AC97_SYSCLK,
54 GPIO113_AC97_nRESET,
55
56 /* BTUART */
57 GPIO42_BTUART_RXD,
58 GPIO43_BTUART_TXD,
59 GPIO44_BTUART_CTS,
60 GPIO45_BTUART_RTS,
61
62 /* STUART */
63 GPIO46_STUART_RXD,
64 GPIO47_STUART_TXD,
65
66 /* MCI controller */
67 GPIO32_MMC_CLK,
68 GPIO112_MMC_CMD,
69 GPIO92_MMC_DAT_0,
70 GPIO109_MMC_DAT_1,
71 GPIO110_MMC_DAT_2,
72 GPIO111_MMC_DAT_3,
73
74 /* LCD */
75 GPIO58_LCD_LDD_0,
76 GPIO59_LCD_LDD_1,
77 GPIO60_LCD_LDD_2,
78 GPIO61_LCD_LDD_3,
79 GPIO62_LCD_LDD_4,
80 GPIO63_LCD_LDD_5,
81 GPIO64_LCD_LDD_6,
82 GPIO65_LCD_LDD_7,
83 GPIO66_LCD_LDD_8,
84 GPIO67_LCD_LDD_9,
85 GPIO68_LCD_LDD_10,
86 GPIO69_LCD_LDD_11,
87 GPIO70_LCD_LDD_12,
88 GPIO71_LCD_LDD_13,
89 GPIO72_LCD_LDD_14,
90 GPIO73_LCD_LDD_15,
91 GPIO74_LCD_FCLK,
92 GPIO75_LCD_LCLK,
93 GPIO76_LCD_PCLK,
94 GPIO77_LCD_BIAS,
95
96 /* QCI */
97 GPIO84_CIF_FV,
98 GPIO25_CIF_LV,
99 GPIO53_CIF_MCLK,
100 GPIO54_CIF_PCLK,
101 GPIO81_CIF_DD_0,
102 GPIO55_CIF_DD_1,
103 GPIO51_CIF_DD_2,
104 GPIO50_CIF_DD_3,
105 GPIO52_CIF_DD_4,
106 GPIO48_CIF_DD_5,
107 GPIO17_CIF_DD_6,
108 GPIO12_CIF_DD_7,
109
110 /* I2C */
111 GPIO117_I2C_SCL,
112 GPIO118_I2C_SDA,
113
114 /* Keypad */
115 GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
116 GPIO101_KP_MKIN_1 | WAKEUP_ON_LEVEL_HIGH,
117 GPIO102_KP_MKIN_2 | WAKEUP_ON_LEVEL_HIGH,
118 GPIO34_KP_MKIN_3 | WAKEUP_ON_LEVEL_HIGH,
119 GPIO39_KP_MKIN_4 | WAKEUP_ON_LEVEL_HIGH,
120 GPIO99_KP_MKIN_5 | WAKEUP_ON_LEVEL_HIGH,
121 GPIO91_KP_MKIN_6 | WAKEUP_ON_LEVEL_HIGH,
122 GPIO36_KP_MKIN_7 | WAKEUP_ON_LEVEL_HIGH,
123 GPIO103_KP_MKOUT_0,
124 GPIO104_KP_MKOUT_1,
125 GPIO105_KP_MKOUT_2,
126 GPIO106_KP_MKOUT_3,
127 GPIO107_KP_MKOUT_4,
128 GPIO108_KP_MKOUT_5,
129 GPIO96_KP_MKOUT_6,
130 GPIO22_KP_MKOUT_7,
131
132 /* SSP1 */
133 GPIO26_SSP1_RXD,
134 GPIO23_SSP1_SCLK,
135 GPIO24_SSP1_SFRM,
136 GPIO57_SSP1_TXD,
137
138 /* SSP2 */
139 GPIO19_SSP2_SCLK,
140 GPIO14_SSP2_SFRM,
141 GPIO89_SSP2_TXD,
142 GPIO88_SSP2_RXD,
143
144 /* SDRAM and local bus */
145 GPIO15_nCS_1,
146 GPIO78_nCS_2,
147 GPIO79_nCS_3,
148 GPIO80_nCS_4,
149 GPIO49_nPWE,
150 GPIO18_RDY,
151
152 /* GPIO */
153 GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
154
155 /* power controls */
156 GPIO20_GPIO | MFP_LPM_DRIVE_LOW, /* GPRS_PWEN */
157 GPIO115_GPIO | MFP_LPM_DRIVE_LOW, /* WLAN_PWEN */
158
159 /* NAND controls */
160 GPIO11_GPIO | MFP_LPM_DRIVE_HIGH, /* NAND CE# */
161 GPIO56_GPIO, /* NAND Ready/Busy */
162
163 /* interrupts */
164 GPIO13_GPIO, /* MMC card detect */
165 GPIO41_GPIO, /* DM9000 interrupt */
166 };
167
168 #if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
169 static struct resource em_x270_dm9000_resource[] = {
170 [0] = {
171 .start = PXA_CS2_PHYS,
172 .end = PXA_CS2_PHYS + 3,
173 .flags = IORESOURCE_MEM,
174 },
175 [1] = {
176 .start = PXA_CS2_PHYS + 8,
177 .end = PXA_CS2_PHYS + 8 + 0x3f,
178 .flags = IORESOURCE_MEM,
179 },
180 [2] = {
181 .start = EM_X270_ETHIRQ,
182 .end = EM_X270_ETHIRQ,
183 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
184 }
185 };
186
187 static struct dm9000_plat_data em_x270_dm9000_platdata = {
188 .flags = DM9000_PLATF_32BITONLY,
189 };
190
191 static struct platform_device em_x270_dm9000 = {
192 .name = "dm9000",
193 .id = 0,
194 .num_resources = ARRAY_SIZE(em_x270_dm9000_resource),
195 .resource = em_x270_dm9000_resource,
196 .dev = {
197 .platform_data = &em_x270_dm9000_platdata,
198 }
199 };
200
em_x270_init_dm9000(void)201 static void __init em_x270_init_dm9000(void)
202 {
203 platform_device_register(&em_x270_dm9000);
204 }
205 #else
em_x270_init_dm9000(void)206 static inline void em_x270_init_dm9000(void) {}
207 #endif
208
209 /* V3020 RTC */
210 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
211 static struct resource em_x270_v3020_resource[] = {
212 [0] = {
213 .start = PXA_CS4_PHYS,
214 .end = PXA_CS4_PHYS + 3,
215 .flags = IORESOURCE_MEM,
216 },
217 };
218
219 static struct v3020_platform_data em_x270_v3020_platdata = {
220 .leftshift = 0,
221 };
222
223 static struct platform_device em_x270_rtc = {
224 .name = "v3020",
225 .num_resources = ARRAY_SIZE(em_x270_v3020_resource),
226 .resource = em_x270_v3020_resource,
227 .id = -1,
228 .dev = {
229 .platform_data = &em_x270_v3020_platdata,
230 }
231 };
232
em_x270_init_rtc(void)233 static void __init em_x270_init_rtc(void)
234 {
235 platform_device_register(&em_x270_rtc);
236 }
237 #else
em_x270_init_rtc(void)238 static inline void em_x270_init_rtc(void) {}
239 #endif
240
241 /* NAND flash */
242 #if defined(CONFIG_MTD_NAND_PLATFORM) || defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
nand_cs_on(void)243 static inline void nand_cs_on(void)
244 {
245 gpio_set_value(GPIO11_NAND_CS, 0);
246 }
247
nand_cs_off(void)248 static void nand_cs_off(void)
249 {
250 dsb();
251
252 gpio_set_value(GPIO11_NAND_CS, 1);
253 }
254
255 /* hardware specific access to control-lines */
em_x270_nand_cmd_ctl(struct mtd_info * mtd,int dat,unsigned int ctrl)256 static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat,
257 unsigned int ctrl)
258 {
259 struct nand_chip *this = mtd->priv;
260 unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;
261
262 dsb();
263
264 if (ctrl & NAND_CTRL_CHANGE) {
265 if (ctrl & NAND_ALE)
266 nandaddr |= (1 << 3);
267 else
268 nandaddr &= ~(1 << 3);
269 if (ctrl & NAND_CLE)
270 nandaddr |= (1 << 2);
271 else
272 nandaddr &= ~(1 << 2);
273 if (ctrl & NAND_NCE)
274 nand_cs_on();
275 else
276 nand_cs_off();
277 }
278
279 dsb();
280 this->IO_ADDR_W = (void __iomem *)nandaddr;
281 if (dat != NAND_CMD_NONE)
282 writel(dat, this->IO_ADDR_W);
283
284 dsb();
285 }
286
287 /* read device ready pin */
em_x270_nand_device_ready(struct mtd_info * mtd)288 static int em_x270_nand_device_ready(struct mtd_info *mtd)
289 {
290 dsb();
291
292 return gpio_get_value(GPIO56_NAND_RB);
293 }
294
295 static struct mtd_partition em_x270_partition_info[] = {
296 [0] = {
297 .name = "em_x270-0",
298 .offset = 0,
299 .size = SZ_4M,
300 },
301 [1] = {
302 .name = "em_x270-1",
303 .offset = MTDPART_OFS_APPEND,
304 .size = MTDPART_SIZ_FULL
305 },
306 };
307
308 static const char *em_x270_part_probes[] = { "cmdlinepart", NULL };
309
310 struct platform_nand_data em_x270_nand_platdata = {
311 .chip = {
312 .nr_chips = 1,
313 .chip_offset = 0,
314 .nr_partitions = ARRAY_SIZE(em_x270_partition_info),
315 .partitions = em_x270_partition_info,
316 .chip_delay = 20,
317 .part_probe_types = em_x270_part_probes,
318 },
319 .ctrl = {
320 .hwcontrol = 0,
321 .dev_ready = em_x270_nand_device_ready,
322 .select_chip = 0,
323 .cmd_ctrl = em_x270_nand_cmd_ctl,
324 },
325 };
326
327 static struct resource em_x270_nand_resource[] = {
328 [0] = {
329 .start = PXA_CS1_PHYS,
330 .end = PXA_CS1_PHYS + 12,
331 .flags = IORESOURCE_MEM,
332 },
333 };
334
335 static struct platform_device em_x270_nand = {
336 .name = "gen_nand",
337 .num_resources = ARRAY_SIZE(em_x270_nand_resource),
338 .resource = em_x270_nand_resource,
339 .id = -1,
340 .dev = {
341 .platform_data = &em_x270_nand_platdata,
342 }
343 };
344
em_x270_init_nand(void)345 static void __init em_x270_init_nand(void)
346 {
347 int err;
348
349 err = gpio_request(GPIO11_NAND_CS, "NAND CS");
350 if (err) {
351 pr_warning("EM-X270: failed to request NAND CS gpio\n");
352 return;
353 }
354
355 gpio_direction_output(GPIO11_NAND_CS, 1);
356
357 err = gpio_request(GPIO56_NAND_RB, "NAND R/B");
358 if (err) {
359 pr_warning("EM-X270: failed to request NAND R/B gpio\n");
360 gpio_free(GPIO11_NAND_CS);
361 return;
362 }
363
364 gpio_direction_input(GPIO56_NAND_RB);
365
366 platform_device_register(&em_x270_nand);
367 }
368 #else
em_x270_init_nand(void)369 static inline void em_x270_init_nand(void) {}
370 #endif
371
372 /* PXA27x OHCI controller setup */
373 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
em_x270_ohci_init(struct device * dev)374 static int em_x270_ohci_init(struct device *dev)
375 {
376 /* enable port 2 transiever */
377 UP2OCR = UP2OCR_HXS | UP2OCR_HXOE;
378
379 return 0;
380 }
381
382 static struct pxaohci_platform_data em_x270_ohci_platform_data = {
383 .port_mode = PMM_PERPORT_MODE,
384 .flags = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
385 .init = em_x270_ohci_init,
386 };
387
em_x270_init_ohci(void)388 static void __init em_x270_init_ohci(void)
389 {
390 pxa_set_ohci_info(&em_x270_ohci_platform_data);
391 }
392 #else
em_x270_init_ohci(void)393 static inline void em_x270_init_ohci(void) {}
394 #endif
395
396 /* MCI controller setup */
397 #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
em_x270_mci_init(struct device * dev,irq_handler_t em_x270_detect_int,void * data)398 static int em_x270_mci_init(struct device *dev,
399 irq_handler_t em_x270_detect_int,
400 void *data)
401 {
402 int err = request_irq(EM_X270_MMC_CD, em_x270_detect_int,
403 IRQF_DISABLED | IRQF_TRIGGER_FALLING,
404 "MMC card detect", data);
405 if (err) {
406 printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
407 __func__, err);
408 return err;
409 }
410
411 return 0;
412 }
413
em_x270_mci_setpower(struct device * dev,unsigned int vdd)414 static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
415 {
416 /*
417 FIXME: current hardware implementation does not allow to
418 enable/disable MMC power. This will be fixed in next HW releases,
419 and we'll need to add implmentation here.
420 */
421 return;
422 }
423
em_x270_mci_exit(struct device * dev,void * data)424 static void em_x270_mci_exit(struct device *dev, void *data)
425 {
426 int irq = gpio_to_irq(GPIO13_MMC_CD);
427 free_irq(irq, data);
428 }
429
430 static struct pxamci_platform_data em_x270_mci_platform_data = {
431 .ocr_mask = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31,
432 .init = em_x270_mci_init,
433 .setpower = em_x270_mci_setpower,
434 .exit = em_x270_mci_exit,
435 };
436
em_x270_init_mmc(void)437 static void __init em_x270_init_mmc(void)
438 {
439 pxa_set_mci_info(&em_x270_mci_platform_data);
440 }
441 #else
em_x270_init_mmc(void)442 static inline void em_x270_init_mmc(void) {}
443 #endif
444
445 /* LCD 480x640 */
446 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
447 static struct pxafb_mode_info em_x270_lcd_mode = {
448 .pixclock = 50000,
449 .bpp = 16,
450 .xres = 480,
451 .yres = 640,
452 .hsync_len = 8,
453 .vsync_len = 2,
454 .left_margin = 8,
455 .upper_margin = 0,
456 .right_margin = 24,
457 .lower_margin = 4,
458 .cmap_greyscale = 0,
459 };
460
461 static struct pxafb_mach_info em_x270_lcd = {
462 .modes = &em_x270_lcd_mode,
463 .num_modes = 1,
464 .lcd_conn = LCD_COLOR_TFT_16BPP,
465 };
em_x270_init_lcd(void)466 static void __init em_x270_init_lcd(void)
467 {
468 set_pxa_fb_info(&em_x270_lcd);
469 }
470 #else
em_x270_init_lcd(void)471 static inline void em_x270_init_lcd(void) {}
472 #endif
473
474 #if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
em_x270_init_ac97(void)475 static void __init em_x270_init_ac97(void)
476 {
477 pxa_set_ac97_info(NULL);
478 }
479 #else
em_x270_init_ac97(void)480 static inline void em_x270_init_ac97(void) {}
481 #endif
482
483 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
484 static unsigned int em_x270_matrix_keys[] = {
485 KEY(0, 0, KEY_A), KEY(1, 0, KEY_UP), KEY(2, 1, KEY_B),
486 KEY(0, 2, KEY_LEFT), KEY(1, 1, KEY_ENTER), KEY(2, 0, KEY_RIGHT),
487 KEY(0, 1, KEY_C), KEY(1, 2, KEY_DOWN), KEY(2, 2, KEY_D),
488 };
489
490 struct pxa27x_keypad_platform_data em_x270_keypad_info = {
491 /* code map for the matrix keys */
492 .matrix_key_rows = 3,
493 .matrix_key_cols = 3,
494 .matrix_key_map = em_x270_matrix_keys,
495 .matrix_key_map_size = ARRAY_SIZE(em_x270_matrix_keys),
496 };
497
em_x270_init_keypad(void)498 static void __init em_x270_init_keypad(void)
499 {
500 pxa_set_keypad_info(&em_x270_keypad_info);
501 }
502 #else
em_x270_init_keypad(void)503 static inline void em_x270_init_keypad(void) {}
504 #endif
505
506 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
507 static struct gpio_keys_button gpio_keys_button[] = {
508 [0] = {
509 .desc = "sleep/wakeup",
510 .code = KEY_SUSPEND,
511 .type = EV_PWR,
512 .gpio = 1,
513 .wakeup = 1,
514 },
515 };
516
517 static struct gpio_keys_platform_data em_x270_gpio_keys_data = {
518 .buttons = gpio_keys_button,
519 .nbuttons = 1,
520 };
521
522 static struct platform_device em_x270_gpio_keys = {
523 .name = "gpio-keys",
524 .id = -1,
525 .dev = {
526 .platform_data = &em_x270_gpio_keys_data,
527 },
528 };
529
em_x270_init_gpio_keys(void)530 static void __init em_x270_init_gpio_keys(void)
531 {
532 platform_device_register(&em_x270_gpio_keys);
533 }
534 #else
em_x270_init_gpio_keys(void)535 static inline void em_x270_init_gpio_keys(void) {}
536 #endif
537
em_x270_init(void)538 static void __init em_x270_init(void)
539 {
540 pxa2xx_mfp_config(ARRAY_AND_SIZE(em_x270_pin_config));
541
542 em_x270_init_dm9000();
543 em_x270_init_rtc();
544 em_x270_init_nand();
545 em_x270_init_lcd();
546 em_x270_init_mmc();
547 em_x270_init_ohci();
548 em_x270_init_keypad();
549 em_x270_init_gpio_keys();
550 em_x270_init_ac97();
551 }
552
553 MACHINE_START(EM_X270, "Compulab EM-X270")
554 .boot_params = 0xa0000100,
555 .phys_io = 0x40000000,
556 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
557 .map_io = pxa_map_io,
558 .init_irq = pxa27x_init_irq,
559 .timer = &pxa_timer,
560 .init_machine = em_x270_init,
561 MACHINE_END
562