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board-overo.c
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1 /*
2  * board-overo.c (Gumstix Overo)
3  *
4  * Initial code: Steve Sakoman <[email protected]>
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 <linux/platform_data/mtd-nand-omap2.h>
41 #include <linux/platform_data/spi-omap2-mcspi.h>
42 
43 #include <asm/mach-types.h>
44 #include <asm/mach/arch.h>
45 #include <asm/mach/flash.h>
46 #include <asm/mach/map.h>
47 
48 #include "common.h"
49 #include <video/omapdss.h>
50 #include <video/omap-panel-generic-dpi.h>
51 #include <video/omap-panel-tfp410.h>
52 #include <plat/gpmc.h>
53 #include <plat/usb.h>
54 
55 #include "mux.h"
56 #include "sdram-micron-mt46h32m32lf-6.h"
57 #include "hsmmc.h"
58 #include "common-board-devices.h"
59 
60 #define OVERO_GPIO_BT_XGATE 15
61 #define OVERO_GPIO_W2W_NRESET 16
62 #define OVERO_GPIO_PENDOWN 114
63 #define OVERO_GPIO_BT_NRESET 164
64 #define OVERO_GPIO_USBH_CPEN 168
65 #define OVERO_GPIO_USBH_NRESET 183
66 
67 #define OVERO_SMSC911X_CS 5
68 #define OVERO_SMSC911X_GPIO 176
69 #define OVERO_SMSC911X2_CS 4
70 #define OVERO_SMSC911X2_GPIO 65
71 
72 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
73  defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
74 
75 /* fixed regulator for ads7846 */
76 static struct regulator_consumer_supply ads7846_supply[] = {
77  REGULATOR_SUPPLY("vcc", "spi1.0"),
78 };
79 
80 static struct regulator_init_data vads7846_regulator = {
81  .constraints = {
82  .valid_ops_mask = REGULATOR_CHANGE_STATUS,
83  },
84  .num_consumer_supplies = ARRAY_SIZE(ads7846_supply),
85  .consumer_supplies = ads7846_supply,
86 };
87 
88 static struct fixed_voltage_config vads7846 = {
89  .supply_name = "vads7846",
90  .microvolts = 3300000, /* 3.3V */
91  .gpio = -EINVAL,
92  .startup_delay = 0,
93  .init_data = &vads7846_regulator,
94 };
95 
96 static struct platform_device vads7846_device = {
97  .name = "reg-fixed-voltage",
98  .id = 1,
99  .dev = {
100  .platform_data = &vads7846,
101  },
102 };
103 
104 static void __init overo_ads7846_init(void)
105 {
106  omap_ads7846_init(1, OVERO_GPIO_PENDOWN, 0, NULL);
107  platform_device_register(&vads7846_device);
108 }
109 
110 #else
111 static inline void __init overo_ads7846_init(void) { return; }
112 #endif
113 
114 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
115 
116 #include <linux/smsc911x.h>
117 #include "gpmc-smsc911x.h"
118 
119 static struct omap_smsc911x_platform_data smsc911x_cfg = {
120  .id = 0,
121  .cs = OVERO_SMSC911X_CS,
122  .gpio_irq = OVERO_SMSC911X_GPIO,
123  .gpio_reset = -EINVAL,
124  .flags = SMSC911X_USE_32BIT,
125 };
126 
127 static struct omap_smsc911x_platform_data smsc911x2_cfg = {
128  .id = 1,
129  .cs = OVERO_SMSC911X2_CS,
130  .gpio_irq = OVERO_SMSC911X2_GPIO,
131  .gpio_reset = -EINVAL,
132  .flags = SMSC911X_USE_32BIT,
133 };
134 
135 static void __init overo_init_smsc911x(void)
136 {
137  gpmc_smsc911x_init(&smsc911x_cfg);
138  gpmc_smsc911x_init(&smsc911x2_cfg);
139 }
140 
141 #else
142 static inline void __init overo_init_smsc911x(void) { return; }
143 #endif
144 
145 /* DSS */
146 static int lcd_enabled;
147 static int dvi_enabled;
148 
149 #define OVERO_GPIO_LCD_EN 144
150 #define OVERO_GPIO_LCD_BL 145
151 
152 static struct gpio overo_dss_gpios[] __initdata = {
153  { OVERO_GPIO_LCD_EN, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_EN" },
154  { OVERO_GPIO_LCD_BL, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_BL" },
155 };
156 
157 static void __init overo_display_init(void)
158 {
159  if (gpio_request_array(overo_dss_gpios, ARRAY_SIZE(overo_dss_gpios))) {
160  printk(KERN_ERR "could not obtain DSS control GPIOs\n");
161  return;
162  }
163 
164  gpio_export(OVERO_GPIO_LCD_EN, 0);
165  gpio_export(OVERO_GPIO_LCD_BL, 0);
166 }
167 
168 static struct tfp410_platform_data dvi_panel = {
169  .i2c_bus_num = 3,
170  .power_down_gpio = -1,
171 };
172 
173 static struct omap_dss_device overo_dvi_device = {
174  .name = "dvi",
175  .type = OMAP_DISPLAY_TYPE_DPI,
176  .driver_name = "tfp410",
177  .data = &dvi_panel,
178  .phy.dpi.data_lines = 24,
179 };
180 
181 static struct omap_dss_device overo_tv_device = {
182  .name = "tv",
183  .driver_name = "venc",
184  .type = OMAP_DISPLAY_TYPE_VENC,
185  .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
186 };
187 
188 static int overo_panel_enable_lcd(struct omap_dss_device *dssdev)
189 {
190  if (dvi_enabled) {
191  printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
192  return -EINVAL;
193  }
194 
195  gpio_set_value(OVERO_GPIO_LCD_EN, 1);
196  gpio_set_value(OVERO_GPIO_LCD_BL, 1);
197  lcd_enabled = 1;
198  return 0;
199 }
200 
201 static void overo_panel_disable_lcd(struct omap_dss_device *dssdev)
202 {
203  gpio_set_value(OVERO_GPIO_LCD_EN, 0);
204  gpio_set_value(OVERO_GPIO_LCD_BL, 0);
205  lcd_enabled = 0;
206 }
207 
208 static struct panel_generic_dpi_data lcd43_panel = {
209  .name = "samsung_lte430wq_f0c",
210  .platform_enable = overo_panel_enable_lcd,
211  .platform_disable = overo_panel_disable_lcd,
212 };
213 
214 static struct omap_dss_device overo_lcd43_device = {
215  .name = "lcd43",
216  .type = OMAP_DISPLAY_TYPE_DPI,
217  .driver_name = "generic_dpi_panel",
218  .data = &lcd43_panel,
219  .phy.dpi.data_lines = 24,
220 };
221 
222 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
223  defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
224 static struct omap_dss_device overo_lcd35_device = {
225  .type = OMAP_DISPLAY_TYPE_DPI,
226  .name = "lcd35",
227  .driver_name = "lgphilips_lb035q02_panel",
228  .phy.dpi.data_lines = 24,
229  .platform_enable = overo_panel_enable_lcd,
230  .platform_disable = overo_panel_disable_lcd,
231 };
232 #endif
233 
234 static struct omap_dss_device *overo_dss_devices[] = {
235  &overo_dvi_device,
236  &overo_tv_device,
237 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
238  defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
239  &overo_lcd35_device,
240 #endif
241  &overo_lcd43_device,
242 };
243 
244 static struct omap_dss_board_info overo_dss_data = {
245  .num_devices = ARRAY_SIZE(overo_dss_devices),
246  .devices = overo_dss_devices,
247  .default_device = &overo_dvi_device,
248 };
249 
250 static struct mtd_partition overo_nand_partitions[] = {
251  {
252  .name = "xloader",
253  .offset = 0, /* Offset = 0x00000 */
254  .size = 4 * NAND_BLOCK_SIZE,
255  .mask_flags = MTD_WRITEABLE
256  },
257  {
258  .name = "uboot",
259  .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
260  .size = 14 * NAND_BLOCK_SIZE,
261  },
262  {
263  .name = "uboot environment",
264  .offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
265  .size = 2 * NAND_BLOCK_SIZE,
266  },
267  {
268  .name = "linux",
269  .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
270  .size = 32 * NAND_BLOCK_SIZE,
271  },
272  {
273  .name = "rootfs",
274  .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
275  .size = MTDPART_SIZ_FULL,
276  },
277 };
278 
279 static struct omap2_hsmmc_info mmc[] = {
280  {
281  .mmc = 1,
282  .caps = MMC_CAP_4_BIT_DATA,
283  .gpio_cd = -EINVAL,
284  .gpio_wp = -EINVAL,
285  },
286  {
287  .mmc = 2,
288  .caps = MMC_CAP_4_BIT_DATA,
289  .gpio_cd = -EINVAL,
290  .gpio_wp = -EINVAL,
291  .transceiver = true,
292  .ocr_mask = 0x00100000, /* 3.3V */
293  },
294  {} /* Terminator */
295 };
296 
297 static struct regulator_consumer_supply overo_vmmc1_supply[] = {
298  REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
299 };
300 
301 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
302 #include <linux/leds.h>
303 
304 static struct gpio_led gpio_leds[] = {
305  {
306  .name = "overo:red:gpio21",
307  .default_trigger = "heartbeat",
308  .gpio = 21,
309  .active_low = true,
310  },
311  {
312  .name = "overo:blue:gpio22",
313  .default_trigger = "none",
314  .gpio = 22,
315  .active_low = true,
316  },
317  {
318  .name = "overo:blue:COM",
319  .default_trigger = "mmc0",
320  .gpio = -EINVAL, /* gets replaced */
321  .active_low = true,
322  },
323 };
324 
325 static struct gpio_led_platform_data gpio_leds_pdata = {
326  .leds = gpio_leds,
327  .num_leds = ARRAY_SIZE(gpio_leds),
328 };
329 
330 static struct platform_device gpio_leds_device = {
331  .name = "leds-gpio",
332  .id = -1,
333  .dev = {
334  .platform_data = &gpio_leds_pdata,
335  },
336 };
337 
338 static void __init overo_init_led(void)
339 {
340  platform_device_register(&gpio_leds_device);
341 }
342 
343 #else
344 static inline void __init overo_init_led(void) { return; }
345 #endif
346 
347 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
348 #include <linux/input.h>
349 #include <linux/gpio_keys.h>
350 
351 static struct gpio_keys_button gpio_buttons[] = {
352  {
353  .code = BTN_0,
354  .gpio = 23,
355  .desc = "button0",
356  .wakeup = 1,
357  },
358  {
359  .code = BTN_1,
360  .gpio = 14,
361  .desc = "button1",
362  .wakeup = 1,
363  },
364 };
365 
366 static struct gpio_keys_platform_data gpio_keys_pdata = {
367  .buttons = gpio_buttons,
368  .nbuttons = ARRAY_SIZE(gpio_buttons),
369 };
370 
371 static struct platform_device gpio_keys_device = {
372  .name = "gpio-keys",
373  .id = -1,
374  .dev = {
375  .platform_data = &gpio_keys_pdata,
376  },
377 };
378 
379 static void __init overo_init_keys(void)
380 {
381  platform_device_register(&gpio_keys_device);
382 }
383 
384 #else
385 static inline void __init overo_init_keys(void) { return; }
386 #endif
387 
388 static int overo_twl_gpio_setup(struct device *dev,
389  unsigned gpio, unsigned ngpio)
390 {
391 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
392  /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
393  gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
394 #endif
395 
396  return 0;
397 }
398 
399 static struct twl4030_gpio_platform_data overo_gpio_data = {
400  .use_leds = true,
401  .setup = overo_twl_gpio_setup,
402 };
403 
404 static struct regulator_init_data overo_vmmc1 = {
405  .constraints = {
406  .min_uV = 1850000,
407  .max_uV = 3150000,
408  .valid_modes_mask = REGULATOR_MODE_NORMAL
409  | REGULATOR_MODE_STANDBY,
410  .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
411  | REGULATOR_CHANGE_MODE
412  | REGULATOR_CHANGE_STATUS,
413  },
414  .num_consumer_supplies = ARRAY_SIZE(overo_vmmc1_supply),
415  .consumer_supplies = overo_vmmc1_supply,
416 };
417 
418 static struct twl4030_platform_data overo_twldata = {
419  .gpio = &overo_gpio_data,
420  .vmmc1 = &overo_vmmc1,
421 };
422 
423 static int __init overo_i2c_init(void)
424 {
425  omap3_pmic_get_config(&overo_twldata,
426  TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
427  TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
428 
429  overo_twldata.vpll2->constraints.name = "VDVI";
430 
431  omap3_pmic_init("tps65950", &overo_twldata);
432  /* i2c2 pins are used for gpio */
433  omap_register_i2c_bus(3, 400, NULL, 0);
434  return 0;
435 }
436 
437 static struct spi_board_info overo_spi_board_info[] __initdata = {
438 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
439  defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
440  {
441  .modalias = "lgphilips_lb035q02_panel-spi",
442  .bus_num = 1,
443  .chip_select = 1,
444  .max_speed_hz = 500000,
445  .mode = SPI_MODE_3,
446  },
447 #endif
448 };
449 
450 static int __init overo_spi_init(void)
451 {
452  overo_ads7846_init();
453  spi_register_board_info(overo_spi_board_info,
454  ARRAY_SIZE(overo_spi_board_info));
455  return 0;
456 }
457 
458 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
459  .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
460  .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
461  .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
462  .phy_reset = true,
463  .reset_gpio_port[0] = -EINVAL,
464  .reset_gpio_port[1] = OVERO_GPIO_USBH_NRESET,
465  .reset_gpio_port[2] = -EINVAL
466 };
467 
468 #ifdef CONFIG_OMAP_MUX
469 static struct omap_board_mux board_mux[] __initdata = {
470  { .reg_offset = OMAP_MUX_TERMINATOR },
471 };
472 #endif
473 
474 static struct gpio overo_bt_gpios[] __initdata = {
475  { OVERO_GPIO_BT_XGATE, GPIOF_OUT_INIT_LOW, "lcd enable" },
476  { OVERO_GPIO_BT_NRESET, GPIOF_OUT_INIT_HIGH, "lcd bl enable" },
477 };
478 
479 static struct regulator_consumer_supply dummy_supplies[] = {
480  REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
481  REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
482  REGULATOR_SUPPLY("vddvario", "smsc911x.1"),
483  REGULATOR_SUPPLY("vdd33a", "smsc911x.1"),
484 };
485 
486 static void __init overo_init(void)
487 {
488  int ret;
489 
490  regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
491  omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
492  overo_i2c_init();
493  omap_hsmmc_init(mmc);
494  omap_display_init(&overo_dss_data);
495  omap_serial_init();
496  omap_sdrc_init(mt46h32m32lf6_sdrc_params,
497  mt46h32m32lf6_sdrc_params);
498  omap_nand_flash_init(0, overo_nand_partitions,
499  ARRAY_SIZE(overo_nand_partitions));
500  usb_musb_init(NULL);
501  usbhs_init(&usbhs_bdata);
502  overo_spi_init();
503  overo_init_smsc911x();
504  overo_display_init();
505  overo_init_led();
506  overo_init_keys();
507  omap_twl4030_audio_init("overo");
508 
509  /* Ensure SDRC pins are mux'd for self-refresh */
510  omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
511  omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
512 
513  ret = gpio_request_one(OVERO_GPIO_W2W_NRESET, GPIOF_OUT_INIT_HIGH,
514  "OVERO_GPIO_W2W_NRESET");
515  if (ret == 0) {
516  gpio_export(OVERO_GPIO_W2W_NRESET, 0);
517  gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
518  udelay(10);
519  gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
520  } else {
521  pr_err("could not obtain gpio for OVERO_GPIO_W2W_NRESET\n");
522  }
523 
524  ret = gpio_request_array(overo_bt_gpios, ARRAY_SIZE(overo_bt_gpios));
525  if (ret) {
526  pr_err("%s: could not obtain BT gpios\n", __func__);
527  } else {
528  gpio_export(OVERO_GPIO_BT_XGATE, 0);
529  gpio_export(OVERO_GPIO_BT_NRESET, 0);
530  gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
531  mdelay(6);
532  gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
533  }
534 
535  ret = gpio_request_one(OVERO_GPIO_USBH_CPEN, GPIOF_OUT_INIT_HIGH,
536  "OVERO_GPIO_USBH_CPEN");
537  if (ret == 0)
538  gpio_export(OVERO_GPIO_USBH_CPEN, 0);
539  else
540  pr_err("could not obtain gpio for OVERO_GPIO_USBH_CPEN\n");
541 }
542 
543 MACHINE_START(OVERO, "Gumstix Overo")
544  .atag_offset = 0x100,
545  .reserve = omap_reserve,
546  .map_io = omap3_map_io,
547  .init_early = omap35xx_init_early,
548  .init_irq = omap3_init_irq,
549  .handle_irq = omap3_intc_handle_irq,
550  .init_machine = overo_init,
551  .init_late = omap35xx_init_late,
552  .timer = &omap3_timer,
553  .restart = omap_prcm_restart,
554 MACHINE_END
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