1 /*
2 * linux/arch/arm/mach-omap1/board-osk.c
3 *
4 * Board specific init for OMAP5912 OSK
5 *
6 * Written by Dirk Behme <dirk.behme@de.bosch.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29 #include <linux/kernel.h>
30 #include <linux/init.h>
31 #include <linux/platform_device.h>
32 #include <linux/interrupt.h>
33 #include <linux/irq.h>
34 #include <linux/i2c.h>
35 #include <linux/leds.h>
36
37 #include <linux/mtd/mtd.h>
38 #include <linux/mtd/partitions.h>
39
40 #include <linux/i2c/tps65010.h>
41
42 #include <mach/hardware.h>
43 #include <asm/gpio.h>
44
45 #include <asm/mach-types.h>
46 #include <asm/mach/arch.h>
47 #include <asm/mach/map.h>
48 #include <asm/mach/flash.h>
49
50 #include <mach/usb.h>
51 #include <mach/mux.h>
52 #include <mach/tc.h>
53 #include <mach/common.h>
54
55 static struct mtd_partition osk_partitions[] = {
56 /* bootloader (U-Boot, etc) in first sector */
57 {
58 .name = "bootloader",
59 .offset = 0,
60 .size = SZ_128K,
61 .mask_flags = MTD_WRITEABLE, /* force read-only */
62 },
63 /* bootloader params in the next sector */
64 {
65 .name = "params",
66 .offset = MTDPART_OFS_APPEND,
67 .size = SZ_128K,
68 .mask_flags = 0,
69 }, {
70 .name = "kernel",
71 .offset = MTDPART_OFS_APPEND,
72 .size = SZ_2M,
73 .mask_flags = 0
74 }, {
75 .name = "filesystem",
76 .offset = MTDPART_OFS_APPEND,
77 .size = MTDPART_SIZ_FULL,
78 .mask_flags = 0
79 }
80 };
81
82 static struct flash_platform_data osk_flash_data = {
83 .map_name = "cfi_probe",
84 .width = 2,
85 .parts = osk_partitions,
86 .nr_parts = ARRAY_SIZE(osk_partitions),
87 };
88
89 static struct resource osk_flash_resource = {
90 /* this is on CS3, wherever it's mapped */
91 .flags = IORESOURCE_MEM,
92 };
93
94 static struct platform_device osk5912_flash_device = {
95 .name = "omapflash",
96 .id = 0,
97 .dev = {
98 .platform_data = &osk_flash_data,
99 },
100 .num_resources = 1,
101 .resource = &osk_flash_resource,
102 };
103
104 static struct resource osk5912_smc91x_resources[] = {
105 [0] = {
106 .start = OMAP_OSK_ETHR_START, /* Physical */
107 .end = OMAP_OSK_ETHR_START + 0xf,
108 .flags = IORESOURCE_MEM,
109 },
110 [1] = {
111 .start = OMAP_GPIO_IRQ(0),
112 .end = OMAP_GPIO_IRQ(0),
113 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
114 },
115 };
116
117 static struct platform_device osk5912_smc91x_device = {
118 .name = "smc91x",
119 .id = -1,
120 .num_resources = ARRAY_SIZE(osk5912_smc91x_resources),
121 .resource = osk5912_smc91x_resources,
122 };
123
124 static struct resource osk5912_cf_resources[] = {
125 [0] = {
126 .start = OMAP_GPIO_IRQ(62),
127 .end = OMAP_GPIO_IRQ(62),
128 .flags = IORESOURCE_IRQ,
129 },
130 };
131
132 static struct platform_device osk5912_cf_device = {
133 .name = "omap_cf",
134 .id = -1,
135 .dev = {
136 .platform_data = (void *) 2 /* CS2 */,
137 },
138 .num_resources = ARRAY_SIZE(osk5912_cf_resources),
139 .resource = osk5912_cf_resources,
140 };
141
142 static struct platform_device *osk5912_devices[] __initdata = {
143 &osk5912_flash_device,
144 &osk5912_smc91x_device,
145 &osk5912_cf_device,
146 };
147
148 static struct gpio_led tps_leds[] = {
149 /* NOTE: D9 and D2 have hardware blink support.
150 * Also, D9 requires non-battery power.
151 */
152 { .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
153 .default_trigger = "ide-disk", },
154 { .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
155 { .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
156 .default_trigger = "heartbeat", },
157 };
158
159 static struct gpio_led_platform_data tps_leds_data = {
160 .num_leds = 3,
161 .leds = tps_leds,
162 };
163
164 static struct platform_device osk5912_tps_leds = {
165 .name = "leds-gpio",
166 .id = 0,
167 .dev.platform_data = &tps_leds_data,
168 };
169
osk_tps_setup(struct i2c_client * client,void * context)170 static int osk_tps_setup(struct i2c_client *client, void *context)
171 {
172 /* Set GPIO 1 HIGH to disable VBUS power supply;
173 * OHCI driver powers it up/down as needed.
174 */
175 gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
176 gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
177
178 /* Set GPIO 2 high so LED D3 is off by default */
179 tps65010_set_gpio_out_value(GPIO2, HIGH);
180
181 /* Set GPIO 3 low to take ethernet out of reset */
182 gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
183 gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
184
185 /* GPIO4 is VDD_DSP */
186 gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
187 gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
188 /* REVISIT if DSP support isn't configured, power it off ... */
189
190 /* Let LED1 (D9) blink; leds-gpio may override it */
191 tps65010_set_led(LED1, BLINK);
192
193 /* Set LED2 off by default */
194 tps65010_set_led(LED2, OFF);
195
196 /* Enable LOW_PWR handshake */
197 tps65010_set_low_pwr(ON);
198
199 /* Switch VLDO2 to 3.0V for AIC23 */
200 tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
201 | TPS_LDO1_ENABLE);
202
203 /* register these three LEDs */
204 osk5912_tps_leds.dev.parent = &client->dev;
205 platform_device_register(&osk5912_tps_leds);
206
207 return 0;
208 }
209
210 static struct tps65010_board tps_board = {
211 .base = OSK_TPS_GPIO_BASE,
212 .outmask = 0x0f,
213 .setup = osk_tps_setup,
214 };
215
216 static struct i2c_board_info __initdata osk_i2c_board_info[] = {
217 {
218 I2C_BOARD_INFO("tps65010", 0x48),
219 .irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1)),
220 .platform_data = &tps_board,
221
222 },
223 {
224 I2C_BOARD_INFO("tlv320aic23", 0x1B),
225 },
226 /* TODO when driver support is ready:
227 * - optionally on Mistral, ov9640 camera sensor at 0x30
228 */
229 };
230
osk_init_smc91x(void)231 static void __init osk_init_smc91x(void)
232 {
233 u32 l;
234
235 if ((gpio_request(0, "smc_irq")) < 0) {
236 printk("Error requesting gpio 0 for smc91x irq\n");
237 return;
238 }
239
240 /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
241 l = omap_readl(EMIFS_CCS(1));
242 l |= 0x3;
243 omap_writel(l, EMIFS_CCS(1));
244 }
245
osk_init_cf(void)246 static void __init osk_init_cf(void)
247 {
248 omap_cfg_reg(M7_1610_GPIO62);
249 if ((gpio_request(62, "cf_irq")) < 0) {
250 printk("Error requesting gpio 62 for CF irq\n");
251 return;
252 }
253 /* the CF I/O IRQ is really active-low */
254 set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
255 }
256
osk_init_irq(void)257 static void __init osk_init_irq(void)
258 {
259 omap1_init_common_hw();
260 omap_init_irq();
261 omap_gpio_init();
262 osk_init_smc91x();
263 osk_init_cf();
264 }
265
266 static struct omap_usb_config osk_usb_config __initdata = {
267 /* has usb host connector (A) ... for development it can also
268 * be used, with a NONSTANDARD gender-bending cable/dongle, as
269 * a peripheral.
270 */
271 #ifdef CONFIG_USB_GADGET_OMAP
272 .register_dev = 1,
273 .hmc_mode = 0,
274 #else
275 .register_host = 1,
276 .hmc_mode = 16,
277 .rwc = 1,
278 #endif
279 .pins[0] = 2,
280 };
281
282 static struct omap_uart_config osk_uart_config __initdata = {
283 .enabled_uarts = (1 << 0),
284 };
285
286 #ifdef CONFIG_OMAP_OSK_MISTRAL
287 static struct omap_lcd_config osk_lcd_config __initdata = {
288 .ctrl_name = "internal",
289 };
290 #endif
291
292 static struct omap_board_config_kernel osk_config[] __initdata = {
293 { OMAP_TAG_USB, &osk_usb_config },
294 { OMAP_TAG_UART, &osk_uart_config },
295 #ifdef CONFIG_OMAP_OSK_MISTRAL
296 { OMAP_TAG_LCD, &osk_lcd_config },
297 #endif
298 };
299
300 #ifdef CONFIG_OMAP_OSK_MISTRAL
301
302 #include <linux/input.h>
303 #include <linux/i2c/at24.h>
304 #include <linux/spi/spi.h>
305 #include <linux/spi/ads7846.h>
306
307 #include <mach/keypad.h>
308
309 static struct at24_platform_data at24c04 = {
310 .byte_len = SZ_4K / 8,
311 .page_size = 16,
312 };
313
314 static struct i2c_board_info __initdata mistral_i2c_board_info[] = {
315 {
316 /* NOTE: powered from LCD supply */
317 I2C_BOARD_INFO("24c04", 0x50),
318 .platform_data = &at24c04,
319 },
320 /* TODO when driver support is ready:
321 * - optionally ov9640 camera sensor at 0x30
322 */
323 };
324
325 static const int osk_keymap[] = {
326 /* KEY(col, row, code) */
327 KEY(0, 0, KEY_F1), /* SW4 */
328 KEY(0, 3, KEY_UP), /* (sw2/up) */
329 KEY(1, 1, KEY_LEFTCTRL), /* SW5 */
330 KEY(1, 2, KEY_LEFT), /* (sw2/left) */
331 KEY(2, 0, KEY_SPACE), /* SW3 */
332 KEY(2, 1, KEY_ESC), /* SW6 */
333 KEY(2, 2, KEY_DOWN), /* (sw2/down) */
334 KEY(3, 2, KEY_ENTER), /* (sw2/select) */
335 KEY(3, 3, KEY_RIGHT), /* (sw2/right) */
336 0
337 };
338
339 static struct omap_kp_platform_data osk_kp_data = {
340 .rows = 8,
341 .cols = 8,
342 .keymap = (int *) osk_keymap,
343 .keymapsize = ARRAY_SIZE(osk_keymap),
344 .delay = 9,
345 };
346
347 static struct resource osk5912_kp_resources[] = {
348 [0] = {
349 .start = INT_KEYBOARD,
350 .end = INT_KEYBOARD,
351 .flags = IORESOURCE_IRQ,
352 },
353 };
354
355 static struct platform_device osk5912_kp_device = {
356 .name = "omap-keypad",
357 .id = -1,
358 .dev = {
359 .platform_data = &osk_kp_data,
360 },
361 .num_resources = ARRAY_SIZE(osk5912_kp_resources),
362 .resource = osk5912_kp_resources,
363 };
364
365 static struct omap_backlight_config mistral_bl_data = {
366 .default_intensity = 0xa0,
367 };
368
369 static struct platform_device mistral_bl_device = {
370 .name = "omap-bl",
371 .id = -1,
372 .dev = {
373 .platform_data = &mistral_bl_data,
374 },
375 };
376
377 static struct platform_device osk5912_lcd_device = {
378 .name = "lcd_osk",
379 .id = -1,
380 };
381
382 static struct platform_device *mistral_devices[] __initdata = {
383 &osk5912_kp_device,
384 &mistral_bl_device,
385 &osk5912_lcd_device,
386 };
387
mistral_get_pendown_state(void)388 static int mistral_get_pendown_state(void)
389 {
390 return !gpio_get_value(4);
391 }
392
393 static const struct ads7846_platform_data mistral_ts_info = {
394 .model = 7846,
395 .vref_delay_usecs = 100, /* internal, no capacitor */
396 .x_plate_ohms = 419,
397 .y_plate_ohms = 486,
398 .get_pendown_state = mistral_get_pendown_state,
399 };
400
401 static struct spi_board_info __initdata mistral_boardinfo[] = { {
402 /* MicroWire (bus 2) CS0 has an ads7846e */
403 .modalias = "ads7846",
404 .platform_data = &mistral_ts_info,
405 .irq = OMAP_GPIO_IRQ(4),
406 .max_speed_hz = 120000 /* max sample rate at 3V */
407 * 26 /* command + data + overhead */,
408 .bus_num = 2,
409 .chip_select = 0,
410 } };
411
412 #ifdef CONFIG_PM
413 static irqreturn_t
osk_mistral_wake_interrupt(int irq,void * ignored)414 osk_mistral_wake_interrupt(int irq, void *ignored)
415 {
416 return IRQ_HANDLED;
417 }
418 #endif
419
osk_mistral_init(void)420 static void __init osk_mistral_init(void)
421 {
422 /* NOTE: we could actually tell if there's a Mistral board
423 * attached, e.g. by trying to read something from the ads7846.
424 * But this arch_init() code is too early for that, since we
425 * can't talk to the ads or even the i2c eeprom.
426 */
427
428 /* parallel camera interface */
429 omap_cfg_reg(J15_1610_CAM_LCLK);
430 omap_cfg_reg(J18_1610_CAM_D7);
431 omap_cfg_reg(J19_1610_CAM_D6);
432 omap_cfg_reg(J14_1610_CAM_D5);
433 omap_cfg_reg(K18_1610_CAM_D4);
434 omap_cfg_reg(K19_1610_CAM_D3);
435 omap_cfg_reg(K15_1610_CAM_D2);
436 omap_cfg_reg(K14_1610_CAM_D1);
437 omap_cfg_reg(L19_1610_CAM_D0);
438 omap_cfg_reg(L18_1610_CAM_VS);
439 omap_cfg_reg(L15_1610_CAM_HS);
440 omap_cfg_reg(M19_1610_CAM_RSTZ);
441 omap_cfg_reg(Y15_1610_CAM_OUTCLK);
442
443 /* serial camera interface */
444 omap_cfg_reg(H19_1610_CAM_EXCLK);
445 omap_cfg_reg(W13_1610_CCP_CLKM);
446 omap_cfg_reg(Y12_1610_CCP_CLKP);
447 /* CCP_DATAM CONFLICTS WITH UART1.TX (and serial console) */
448 /* omap_cfg_reg(Y14_1610_CCP_DATAM); */
449 omap_cfg_reg(W14_1610_CCP_DATAP);
450
451 /* CAM_PWDN */
452 if (gpio_request(11, "cam_pwdn") == 0) {
453 omap_cfg_reg(N20_1610_GPIO11);
454 gpio_direction_output(11, 0);
455 } else
456 pr_debug("OSK+Mistral: CAM_PWDN is awol\n");
457
458
459 /* omap_cfg_reg(P19_1610_GPIO6); */ /* BUSY */
460 gpio_request(6, "ts_busy");
461 gpio_direction_input(6);
462
463 omap_cfg_reg(P20_1610_GPIO4); /* PENIRQ */
464 gpio_request(4, "ts_int");
465 gpio_direction_input(4);
466 set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING);
467
468 spi_register_board_info(mistral_boardinfo,
469 ARRAY_SIZE(mistral_boardinfo));
470
471 /* the sideways button (SW1) is for use as a "wakeup" button
472 *
473 * NOTE: The Mistral board has the wakeup button (SW1) wired
474 * to the LCD 3.3V rail, which is powered down during suspend.
475 * To allow this button to wake up the omap, work around this
476 * HW bug by rewiring SW1 to use the main 3.3V rail.
477 */
478 omap_cfg_reg(N15_1610_MPUIO2);
479 if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) {
480 int ret = 0;
481 int irq = gpio_to_irq(OMAP_MPUIO(2));
482
483 gpio_direction_input(OMAP_MPUIO(2));
484 set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
485 #ifdef CONFIG_PM
486 /* share the IRQ in case someone wants to use the
487 * button for more than wakeup from system sleep.
488 */
489 ret = request_irq(irq,
490 &osk_mistral_wake_interrupt,
491 IRQF_SHARED, "mistral_wakeup",
492 &osk_mistral_wake_interrupt);
493 if (ret != 0) {
494 gpio_free(OMAP_MPUIO(2));
495 printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n",
496 ret);
497 } else
498 enable_irq_wake(irq);
499 #endif
500 } else
501 printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n");
502
503 /* LCD: backlight, and power; power controls other devices on the
504 * board, like the touchscreen, EEPROM, and wakeup (!) switch.
505 */
506 omap_cfg_reg(PWL);
507 if (gpio_request(2, "lcd_pwr") == 0)
508 gpio_direction_output(2, 1);
509
510 i2c_register_board_info(1, mistral_i2c_board_info,
511 ARRAY_SIZE(mistral_i2c_board_info));
512
513 platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
514 }
515 #else
osk_mistral_init(void)516 static void __init osk_mistral_init(void) { }
517 #endif
518
519 #define EMIFS_CS3_VAL (0x88013141)
520
osk_init(void)521 static void __init osk_init(void)
522 {
523 u32 l;
524
525 /* Workaround for wrong CS3 (NOR flash) timing
526 * There are some U-Boot versions out there which configure
527 * wrong CS3 memory timings. This mainly leads to CRC
528 * or similar errors if you use NOR flash (e.g. with JFFS2)
529 */
530 l = omap_readl(EMIFS_CCS(3));
531 if (l != EMIFS_CS3_VAL)
532 omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
533
534 osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
535 osk_flash_resource.end += SZ_32M - 1;
536 platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
537 omap_board_config = osk_config;
538 omap_board_config_size = ARRAY_SIZE(osk_config);
539
540 l = omap_readl(USB_TRANSCEIVER_CTRL);
541 l |= (3 << 1);
542 omap_writel(l, USB_TRANSCEIVER_CTRL);
543
544 /* irq for tps65010 chip */
545 /* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */
546 if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
547 gpio_direction_input(OMAP_MPUIO(1));
548
549 omap_serial_init();
550 omap_register_i2c_bus(1, 400, osk_i2c_board_info,
551 ARRAY_SIZE(osk_i2c_board_info));
552 osk_mistral_init();
553 }
554
osk_map_io(void)555 static void __init osk_map_io(void)
556 {
557 omap1_map_common_io();
558 }
559
560 MACHINE_START(OMAP_OSK, "TI-OSK")
561 /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
562 .phys_io = 0xfff00000,
563 .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
564 .boot_params = 0x10000100,
565 .map_io = osk_map_io,
566 .init_irq = osk_init_irq,
567 .init_machine = osk_init,
568 .timer = &omap_timer,
569 MACHINE_END
570