1 /*
2 * board-overo.c (Gumstix Overo)
3 *
4 * Initial code: Steve Sakoman <steve@sakoman.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22 #include <linux/clk.h>
23 #include <linux/delay.h>
24 #include <linux/err.h>
25 #include <linux/init.h>
26 #include <linux/io.h>
27 #include <linux/gpio.h>
28 #include <linux/kernel.h>
29 #include <linux/platform_device.h>
30 #include <linux/i2c/twl.h>
31 #include <linux/regulator/machine.h>
32 #include <linux/regulator/fixed.h>
33 #include <linux/spi/spi.h>
34
35 #include <linux/mtd/mtd.h>
36 #include <linux/mtd/nand.h>
37 #include <linux/mtd/partitions.h>
38 #include <linux/mmc/host.h>
39
40 #include <asm/mach-types.h>
41 #include <asm/mach/arch.h>
42 #include <asm/mach/flash.h>
43 #include <asm/mach/map.h>
44
45 #include <plat/board.h>
46 #include "common.h"
47 #include <video/omapdss.h>
48 #include <video/omap-panel-generic-dpi.h>
49 #include <video/omap-panel-dvi.h>
50 #include <plat/gpmc.h>
51 #include <mach/hardware.h>
52 #include <plat/nand.h>
53 #include <plat/mcspi.h>
54 #include <plat/mux.h>
55 #include <plat/usb.h>
56
57 #include "mux.h"
58 #include "sdram-micron-mt46h32m32lf-6.h"
59 #include "hsmmc.h"
60 #include "common-board-devices.h"
61
62 #define OVERO_GPIO_BT_XGATE 15
63 #define OVERO_GPIO_W2W_NRESET 16
64 #define OVERO_GPIO_PENDOWN 114
65 #define OVERO_GPIO_BT_NRESET 164
66 #define OVERO_GPIO_USBH_CPEN 168
67 #define OVERO_GPIO_USBH_NRESET 183
68
69 #define OVERO_SMSC911X_CS 5
70 #define OVERO_SMSC911X_GPIO 176
71 #define OVERO_SMSC911X2_CS 4
72 #define OVERO_SMSC911X2_GPIO 65
73
74 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
75 defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
76
77 /* fixed regulator for ads7846 */
78 static struct regulator_consumer_supply ads7846_supply[] = {
79 REGULATOR_SUPPLY("vcc", "spi1.0"),
80 };
81
82 static struct regulator_init_data vads7846_regulator = {
83 .constraints = {
84 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
85 },
86 .num_consumer_supplies = ARRAY_SIZE(ads7846_supply),
87 .consumer_supplies = ads7846_supply,
88 };
89
90 static struct fixed_voltage_config vads7846 = {
91 .supply_name = "vads7846",
92 .microvolts = 3300000, /* 3.3V */
93 .gpio = -EINVAL,
94 .startup_delay = 0,
95 .init_data = &vads7846_regulator,
96 };
97
98 static struct platform_device vads7846_device = {
99 .name = "reg-fixed-voltage",
100 .id = 1,
101 .dev = {
102 .platform_data = &vads7846,
103 },
104 };
105
overo_ads7846_init(void)106 static void __init overo_ads7846_init(void)
107 {
108 omap_ads7846_init(1, OVERO_GPIO_PENDOWN, 0, NULL);
109 platform_device_register(&vads7846_device);
110 }
111
112 #else
overo_ads7846_init(void)113 static inline void __init overo_ads7846_init(void) { return; }
114 #endif
115
116 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
117
118 #include <linux/smsc911x.h>
119 #include <plat/gpmc-smsc911x.h>
120
121 static struct omap_smsc911x_platform_data smsc911x_cfg = {
122 .id = 0,
123 .cs = OVERO_SMSC911X_CS,
124 .gpio_irq = OVERO_SMSC911X_GPIO,
125 .gpio_reset = -EINVAL,
126 .flags = SMSC911X_USE_32BIT,
127 };
128
129 static struct omap_smsc911x_platform_data smsc911x2_cfg = {
130 .id = 1,
131 .cs = OVERO_SMSC911X2_CS,
132 .gpio_irq = OVERO_SMSC911X2_GPIO,
133 .gpio_reset = -EINVAL,
134 .flags = SMSC911X_USE_32BIT,
135 };
136
overo_init_smsc911x(void)137 static void __init overo_init_smsc911x(void)
138 {
139 gpmc_smsc911x_init(&smsc911x_cfg);
140 gpmc_smsc911x_init(&smsc911x2_cfg);
141 }
142
143 #else
overo_init_smsc911x(void)144 static inline void __init overo_init_smsc911x(void) { return; }
145 #endif
146
147 /* DSS */
148 static int lcd_enabled;
149 static int dvi_enabled;
150
151 #define OVERO_GPIO_LCD_EN 144
152 #define OVERO_GPIO_LCD_BL 145
153
154 static struct gpio overo_dss_gpios[] __initdata = {
155 { OVERO_GPIO_LCD_EN, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_EN" },
156 { OVERO_GPIO_LCD_BL, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_BL" },
157 };
158
overo_display_init(void)159 static void __init overo_display_init(void)
160 {
161 if (gpio_request_array(overo_dss_gpios, ARRAY_SIZE(overo_dss_gpios))) {
162 printk(KERN_ERR "could not obtain DSS control GPIOs\n");
163 return;
164 }
165
166 gpio_export(OVERO_GPIO_LCD_EN, 0);
167 gpio_export(OVERO_GPIO_LCD_BL, 0);
168 }
169
overo_panel_enable_dvi(struct omap_dss_device * dssdev)170 static int overo_panel_enable_dvi(struct omap_dss_device *dssdev)
171 {
172 if (lcd_enabled) {
173 printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
174 return -EINVAL;
175 }
176 dvi_enabled = 1;
177
178 return 0;
179 }
180
overo_panel_disable_dvi(struct omap_dss_device * dssdev)181 static void overo_panel_disable_dvi(struct omap_dss_device *dssdev)
182 {
183 dvi_enabled = 0;
184 }
185
186 static struct panel_dvi_platform_data dvi_panel = {
187 .platform_enable = overo_panel_enable_dvi,
188 .platform_disable = overo_panel_disable_dvi,
189 .i2c_bus_num = 3,
190 };
191
192 static struct omap_dss_device overo_dvi_device = {
193 .name = "dvi",
194 .type = OMAP_DISPLAY_TYPE_DPI,
195 .driver_name = "dvi",
196 .data = &dvi_panel,
197 .phy.dpi.data_lines = 24,
198 };
199
200 static struct omap_dss_device overo_tv_device = {
201 .name = "tv",
202 .driver_name = "venc",
203 .type = OMAP_DISPLAY_TYPE_VENC,
204 .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
205 };
206
overo_panel_enable_lcd(struct omap_dss_device * dssdev)207 static int overo_panel_enable_lcd(struct omap_dss_device *dssdev)
208 {
209 if (dvi_enabled) {
210 printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
211 return -EINVAL;
212 }
213
214 gpio_set_value(OVERO_GPIO_LCD_EN, 1);
215 gpio_set_value(OVERO_GPIO_LCD_BL, 1);
216 lcd_enabled = 1;
217 return 0;
218 }
219
overo_panel_disable_lcd(struct omap_dss_device * dssdev)220 static void overo_panel_disable_lcd(struct omap_dss_device *dssdev)
221 {
222 gpio_set_value(OVERO_GPIO_LCD_EN, 0);
223 gpio_set_value(OVERO_GPIO_LCD_BL, 0);
224 lcd_enabled = 0;
225 }
226
227 static struct panel_generic_dpi_data lcd43_panel = {
228 .name = "samsung_lte430wq_f0c",
229 .platform_enable = overo_panel_enable_lcd,
230 .platform_disable = overo_panel_disable_lcd,
231 };
232
233 static struct omap_dss_device overo_lcd43_device = {
234 .name = "lcd43",
235 .type = OMAP_DISPLAY_TYPE_DPI,
236 .driver_name = "generic_dpi_panel",
237 .data = &lcd43_panel,
238 .phy.dpi.data_lines = 24,
239 };
240
241 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
242 defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
243 static struct omap_dss_device overo_lcd35_device = {
244 .type = OMAP_DISPLAY_TYPE_DPI,
245 .name = "lcd35",
246 .driver_name = "lgphilips_lb035q02_panel",
247 .phy.dpi.data_lines = 24,
248 .platform_enable = overo_panel_enable_lcd,
249 .platform_disable = overo_panel_disable_lcd,
250 };
251 #endif
252
253 static struct omap_dss_device *overo_dss_devices[] = {
254 &overo_dvi_device,
255 &overo_tv_device,
256 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
257 defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
258 &overo_lcd35_device,
259 #endif
260 &overo_lcd43_device,
261 };
262
263 static struct omap_dss_board_info overo_dss_data = {
264 .num_devices = ARRAY_SIZE(overo_dss_devices),
265 .devices = overo_dss_devices,
266 .default_device = &overo_dvi_device,
267 };
268
269 static struct mtd_partition overo_nand_partitions[] = {
270 {
271 .name = "xloader",
272 .offset = 0, /* Offset = 0x00000 */
273 .size = 4 * NAND_BLOCK_SIZE,
274 .mask_flags = MTD_WRITEABLE
275 },
276 {
277 .name = "uboot",
278 .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
279 .size = 14 * NAND_BLOCK_SIZE,
280 },
281 {
282 .name = "uboot environment",
283 .offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
284 .size = 2 * NAND_BLOCK_SIZE,
285 },
286 {
287 .name = "linux",
288 .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
289 .size = 32 * NAND_BLOCK_SIZE,
290 },
291 {
292 .name = "rootfs",
293 .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
294 .size = MTDPART_SIZ_FULL,
295 },
296 };
297
298 static struct omap2_hsmmc_info mmc[] = {
299 {
300 .mmc = 1,
301 .caps = MMC_CAP_4_BIT_DATA,
302 .gpio_cd = -EINVAL,
303 .gpio_wp = -EINVAL,
304 },
305 {
306 .mmc = 2,
307 .caps = MMC_CAP_4_BIT_DATA,
308 .gpio_cd = -EINVAL,
309 .gpio_wp = -EINVAL,
310 .transceiver = true,
311 .ocr_mask = 0x00100000, /* 3.3V */
312 },
313 {} /* Terminator */
314 };
315
316 static struct regulator_consumer_supply overo_vmmc1_supply[] = {
317 REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
318 };
319
320 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
321 #include <linux/leds.h>
322
323 static struct gpio_led gpio_leds[] = {
324 {
325 .name = "overo:red:gpio21",
326 .default_trigger = "heartbeat",
327 .gpio = 21,
328 .active_low = true,
329 },
330 {
331 .name = "overo:blue:gpio22",
332 .default_trigger = "none",
333 .gpio = 22,
334 .active_low = true,
335 },
336 {
337 .name = "overo:blue:COM",
338 .default_trigger = "mmc0",
339 .gpio = -EINVAL, /* gets replaced */
340 .active_low = true,
341 },
342 };
343
344 static struct gpio_led_platform_data gpio_leds_pdata = {
345 .leds = gpio_leds,
346 .num_leds = ARRAY_SIZE(gpio_leds),
347 };
348
349 static struct platform_device gpio_leds_device = {
350 .name = "leds-gpio",
351 .id = -1,
352 .dev = {
353 .platform_data = &gpio_leds_pdata,
354 },
355 };
356
overo_init_led(void)357 static void __init overo_init_led(void)
358 {
359 platform_device_register(&gpio_leds_device);
360 }
361
362 #else
overo_init_led(void)363 static inline void __init overo_init_led(void) { return; }
364 #endif
365
366 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
367 #include <linux/input.h>
368 #include <linux/gpio_keys.h>
369
370 static struct gpio_keys_button gpio_buttons[] = {
371 {
372 .code = BTN_0,
373 .gpio = 23,
374 .desc = "button0",
375 .wakeup = 1,
376 },
377 {
378 .code = BTN_1,
379 .gpio = 14,
380 .desc = "button1",
381 .wakeup = 1,
382 },
383 };
384
385 static struct gpio_keys_platform_data gpio_keys_pdata = {
386 .buttons = gpio_buttons,
387 .nbuttons = ARRAY_SIZE(gpio_buttons),
388 };
389
390 static struct platform_device gpio_keys_device = {
391 .name = "gpio-keys",
392 .id = -1,
393 .dev = {
394 .platform_data = &gpio_keys_pdata,
395 },
396 };
397
overo_init_keys(void)398 static void __init overo_init_keys(void)
399 {
400 platform_device_register(&gpio_keys_device);
401 }
402
403 #else
overo_init_keys(void)404 static inline void __init overo_init_keys(void) { return; }
405 #endif
406
overo_twl_gpio_setup(struct device * dev,unsigned gpio,unsigned ngpio)407 static int overo_twl_gpio_setup(struct device *dev,
408 unsigned gpio, unsigned ngpio)
409 {
410 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
411 /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
412 gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
413 #endif
414
415 return 0;
416 }
417
418 static struct twl4030_gpio_platform_data overo_gpio_data = {
419 .gpio_base = OMAP_MAX_GPIO_LINES,
420 .irq_base = TWL4030_GPIO_IRQ_BASE,
421 .irq_end = TWL4030_GPIO_IRQ_END,
422 .use_leds = true,
423 .setup = overo_twl_gpio_setup,
424 };
425
426 static struct regulator_init_data overo_vmmc1 = {
427 .constraints = {
428 .min_uV = 1850000,
429 .max_uV = 3150000,
430 .valid_modes_mask = REGULATOR_MODE_NORMAL
431 | REGULATOR_MODE_STANDBY,
432 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
433 | REGULATOR_CHANGE_MODE
434 | REGULATOR_CHANGE_STATUS,
435 },
436 .num_consumer_supplies = ARRAY_SIZE(overo_vmmc1_supply),
437 .consumer_supplies = overo_vmmc1_supply,
438 };
439
440 static struct twl4030_platform_data overo_twldata = {
441 .gpio = &overo_gpio_data,
442 .vmmc1 = &overo_vmmc1,
443 };
444
overo_i2c_init(void)445 static int __init overo_i2c_init(void)
446 {
447 omap3_pmic_get_config(&overo_twldata,
448 TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
449 TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
450
451 overo_twldata.vpll2->constraints.name = "VDVI";
452
453 omap3_pmic_init("tps65950", &overo_twldata);
454 /* i2c2 pins are used for gpio */
455 omap_register_i2c_bus(3, 400, NULL, 0);
456 return 0;
457 }
458
459 static struct spi_board_info overo_spi_board_info[] __initdata = {
460 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
461 defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
462 {
463 .modalias = "lgphilips_lb035q02_panel-spi",
464 .bus_num = 1,
465 .chip_select = 1,
466 .max_speed_hz = 500000,
467 .mode = SPI_MODE_3,
468 },
469 #endif
470 };
471
overo_spi_init(void)472 static int __init overo_spi_init(void)
473 {
474 overo_ads7846_init();
475 spi_register_board_info(overo_spi_board_info,
476 ARRAY_SIZE(overo_spi_board_info));
477 return 0;
478 }
479
480 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
481 .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
482 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
483 .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
484 .phy_reset = true,
485 .reset_gpio_port[0] = -EINVAL,
486 .reset_gpio_port[1] = OVERO_GPIO_USBH_NRESET,
487 .reset_gpio_port[2] = -EINVAL
488 };
489
490 #ifdef CONFIG_OMAP_MUX
491 static struct omap_board_mux board_mux[] __initdata = {
492 { .reg_offset = OMAP_MUX_TERMINATOR },
493 };
494 #endif
495
496 static struct gpio overo_bt_gpios[] __initdata = {
497 { OVERO_GPIO_BT_XGATE, GPIOF_OUT_INIT_LOW, "lcd enable" },
498 { OVERO_GPIO_BT_NRESET, GPIOF_OUT_INIT_HIGH, "lcd bl enable" },
499 };
500
501 static struct regulator_consumer_supply dummy_supplies[] = {
502 REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
503 REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
504 REGULATOR_SUPPLY("vddvario", "smsc911x.1"),
505 REGULATOR_SUPPLY("vdd33a", "smsc911x.1"),
506 };
507
overo_init(void)508 static void __init overo_init(void)
509 {
510 int ret;
511
512 regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
513 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
514 omap_hsmmc_init(mmc);
515 overo_i2c_init();
516 omap_display_init(&overo_dss_data);
517 omap_serial_init();
518 omap_sdrc_init(mt46h32m32lf6_sdrc_params,
519 mt46h32m32lf6_sdrc_params);
520 omap_nand_flash_init(0, overo_nand_partitions,
521 ARRAY_SIZE(overo_nand_partitions));
522 usb_musb_init(NULL);
523 usbhs_init(&usbhs_bdata);
524 overo_spi_init();
525 overo_init_smsc911x();
526 overo_display_init();
527 overo_init_led();
528 overo_init_keys();
529
530 /* Ensure SDRC pins are mux'd for self-refresh */
531 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
532 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
533
534 ret = gpio_request_one(OVERO_GPIO_W2W_NRESET, GPIOF_OUT_INIT_HIGH,
535 "OVERO_GPIO_W2W_NRESET");
536 if (ret == 0) {
537 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
538 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
539 udelay(10);
540 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
541 } else {
542 printk(KERN_ERR "could not obtain gpio for "
543 "OVERO_GPIO_W2W_NRESET\n");
544 }
545
546 ret = gpio_request_array(overo_bt_gpios, ARRAY_SIZE(overo_bt_gpios));
547 if (ret) {
548 pr_err("%s: could not obtain BT gpios\n", __func__);
549 } else {
550 gpio_export(OVERO_GPIO_BT_XGATE, 0);
551 gpio_export(OVERO_GPIO_BT_NRESET, 0);
552 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
553 mdelay(6);
554 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
555 }
556
557 ret = gpio_request_one(OVERO_GPIO_USBH_CPEN, GPIOF_OUT_INIT_HIGH,
558 "OVERO_GPIO_USBH_CPEN");
559 if (ret == 0)
560 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
561 else
562 printk(KERN_ERR "could not obtain gpio for "
563 "OVERO_GPIO_USBH_CPEN\n");
564 }
565
566 MACHINE_START(OVERO, "Gumstix Overo")
567 .atag_offset = 0x100,
568 .reserve = omap_reserve,
569 .map_io = omap3_map_io,
570 .init_early = omap35xx_init_early,
571 .init_irq = omap3_init_irq,
572 .handle_irq = omap3_intc_handle_irq,
573 .init_machine = overo_init,
574 .timer = &omap3_timer,
575 .restart = omap_prcm_restart,
576 MACHINE_END
577