Merge git://github.com/rustyrussell/linux
[pandora-kernel.git] / arch / arm / mach-omap1 / board-osk.c
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 #include <linux/gpio.h>
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 #include <linux/smc91x.h>
37
38 #include <linux/mtd/mtd.h>
39 #include <linux/mtd/partitions.h>
40 #include <linux/mtd/physmap.h>
41
42 #include <linux/i2c/tps65010.h>
43
44 #include <mach/hardware.h>
45
46 #include <asm/mach-types.h>
47 #include <asm/mach/arch.h>
48 #include <asm/mach/map.h>
49
50 #include <plat/flash.h>
51 #include <plat/usb.h>
52 #include <plat/mux.h>
53 #include <plat/tc.h>
54 #include <plat/common.h>
55
56 /* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
57 #define OMAP_OSK_ETHR_START             0x04800300
58
59 /* TPS65010 has four GPIOs.  nPG and LED2 can be treated like GPIOs with
60  * alternate pin configurations for hardware-controlled blinking.
61  */
62 #define OSK_TPS_GPIO_BASE               (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)
63 #       define OSK_TPS_GPIO_USB_PWR_EN  (OSK_TPS_GPIO_BASE + 0)
64 #       define OSK_TPS_GPIO_LED_D3      (OSK_TPS_GPIO_BASE + 1)
65 #       define OSK_TPS_GPIO_LAN_RESET   (OSK_TPS_GPIO_BASE + 2)
66 #       define OSK_TPS_GPIO_DSP_PWR_EN  (OSK_TPS_GPIO_BASE + 3)
67 #       define OSK_TPS_GPIO_LED_D9      (OSK_TPS_GPIO_BASE + 4)
68 #       define OSK_TPS_GPIO_LED_D2      (OSK_TPS_GPIO_BASE + 5)
69
70 static struct mtd_partition osk_partitions[] = {
71         /* bootloader (U-Boot, etc) in first sector */
72         {
73               .name             = "bootloader",
74               .offset           = 0,
75               .size             = SZ_128K,
76               .mask_flags       = MTD_WRITEABLE, /* force read-only */
77         },
78         /* bootloader params in the next sector */
79         {
80               .name             = "params",
81               .offset           = MTDPART_OFS_APPEND,
82               .size             = SZ_128K,
83               .mask_flags       = 0,
84         }, {
85               .name             = "kernel",
86               .offset           = MTDPART_OFS_APPEND,
87               .size             = SZ_2M,
88               .mask_flags       = 0
89         }, {
90               .name             = "filesystem",
91               .offset           = MTDPART_OFS_APPEND,
92               .size             = MTDPART_SIZ_FULL,
93               .mask_flags       = 0
94         }
95 };
96
97 static struct physmap_flash_data osk_flash_data = {
98         .width          = 2,
99         .set_vpp        = omap1_set_vpp,
100         .parts          = osk_partitions,
101         .nr_parts       = ARRAY_SIZE(osk_partitions),
102 };
103
104 static struct resource osk_flash_resource = {
105         /* this is on CS3, wherever it's mapped */
106         .flags          = IORESOURCE_MEM,
107 };
108
109 static struct platform_device osk5912_flash_device = {
110         .name           = "physmap-flash",
111         .id             = 0,
112         .dev            = {
113                 .platform_data  = &osk_flash_data,
114         },
115         .num_resources  = 1,
116         .resource       = &osk_flash_resource,
117 };
118
119 static struct smc91x_platdata osk5912_smc91x_info = {
120         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
121         .leda   = RPC_LED_100_10,
122         .ledb   = RPC_LED_TX_RX,
123 };
124
125 static struct resource osk5912_smc91x_resources[] = {
126         [0] = {
127                 .start  = OMAP_OSK_ETHR_START,          /* Physical */
128                 .end    = OMAP_OSK_ETHR_START + 0xf,
129                 .flags  = IORESOURCE_MEM,
130         },
131         [1] = {
132                 .start  = OMAP_GPIO_IRQ(0),
133                 .end    = OMAP_GPIO_IRQ(0),
134                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
135         },
136 };
137
138 static struct platform_device osk5912_smc91x_device = {
139         .name           = "smc91x",
140         .id             = -1,
141         .dev    = {
142                 .platform_data  = &osk5912_smc91x_info,
143         },
144         .num_resources  = ARRAY_SIZE(osk5912_smc91x_resources),
145         .resource       = osk5912_smc91x_resources,
146 };
147
148 static struct resource osk5912_cf_resources[] = {
149         [0] = {
150                 .start  = OMAP_GPIO_IRQ(62),
151                 .end    = OMAP_GPIO_IRQ(62),
152                 .flags  = IORESOURCE_IRQ,
153         },
154 };
155
156 static struct platform_device osk5912_cf_device = {
157         .name           = "omap_cf",
158         .id             = -1,
159         .dev = {
160                 .platform_data  = (void *) 2 /* CS2 */,
161         },
162         .num_resources  = ARRAY_SIZE(osk5912_cf_resources),
163         .resource       = osk5912_cf_resources,
164 };
165
166 static struct platform_device *osk5912_devices[] __initdata = {
167         &osk5912_flash_device,
168         &osk5912_smc91x_device,
169         &osk5912_cf_device,
170 };
171
172 static struct gpio_led tps_leds[] = {
173         /* NOTE:  D9 and D2 have hardware blink support.
174          * Also, D9 requires non-battery power.
175          */
176         { .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
177                         .default_trigger = "ide-disk", },
178         { .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
179         { .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
180                         .default_trigger = "heartbeat", },
181 };
182
183 static struct gpio_led_platform_data tps_leds_data = {
184         .num_leds       = 3,
185         .leds           = tps_leds,
186 };
187
188 static struct platform_device osk5912_tps_leds = {
189         .name                   = "leds-gpio",
190         .id                     = 0,
191         .dev.platform_data      = &tps_leds_data,
192 };
193
194 static int osk_tps_setup(struct i2c_client *client, void *context)
195 {
196         /* Set GPIO 1 HIGH to disable VBUS power supply;
197          * OHCI driver powers it up/down as needed.
198          */
199         gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
200         gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
201
202         /* Set GPIO 2 high so LED D3 is off by default */
203         tps65010_set_gpio_out_value(GPIO2, HIGH);
204
205         /* Set GPIO 3 low to take ethernet out of reset */
206         gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
207         gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
208
209         /* GPIO4 is VDD_DSP */
210         gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
211         gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
212         /* REVISIT if DSP support isn't configured, power it off ... */
213
214         /* Let LED1 (D9) blink; leds-gpio may override it */
215         tps65010_set_led(LED1, BLINK);
216
217         /* Set LED2 off by default */
218         tps65010_set_led(LED2, OFF);
219
220         /* Enable LOW_PWR handshake */
221         tps65010_set_low_pwr(ON);
222
223         /* Switch VLDO2 to 3.0V for AIC23 */
224         tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
225                         | TPS_LDO1_ENABLE);
226
227         /* register these three LEDs */
228         osk5912_tps_leds.dev.parent = &client->dev;
229         platform_device_register(&osk5912_tps_leds);
230
231         return 0;
232 }
233
234 static struct tps65010_board tps_board = {
235         .base           = OSK_TPS_GPIO_BASE,
236         .outmask        = 0x0f,
237         .setup          = osk_tps_setup,
238 };
239
240 static struct i2c_board_info __initdata osk_i2c_board_info[] = {
241         {
242                 I2C_BOARD_INFO("tps65010", 0x48),
243                 .irq            = OMAP_GPIO_IRQ(OMAP_MPUIO(1)),
244                 .platform_data  = &tps_board,
245
246         },
247         {
248                 I2C_BOARD_INFO("tlv320aic23", 0x1B),
249         },
250         /* TODO when driver support is ready:
251          *  - optionally on Mistral, ov9640 camera sensor at 0x30
252          */
253 };
254
255 static void __init osk_init_smc91x(void)
256 {
257         u32 l;
258
259         if ((gpio_request(0, "smc_irq")) < 0) {
260                 printk("Error requesting gpio 0 for smc91x irq\n");
261                 return;
262         }
263
264         /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
265         l = omap_readl(EMIFS_CCS(1));
266         l |= 0x3;
267         omap_writel(l, EMIFS_CCS(1));
268 }
269
270 static void __init osk_init_cf(void)
271 {
272         omap_cfg_reg(M7_1610_GPIO62);
273         if ((gpio_request(62, "cf_irq")) < 0) {
274                 printk("Error requesting gpio 62 for CF irq\n");
275                 return;
276         }
277         /* the CF I/O IRQ is really active-low */
278         irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
279 }
280
281 static struct omap_usb_config osk_usb_config __initdata = {
282         /* has usb host connector (A) ... for development it can also
283          * be used, with a NONSTANDARD gender-bending cable/dongle, as
284          * a peripheral.
285          */
286 #ifdef  CONFIG_USB_GADGET_OMAP
287         .register_dev   = 1,
288         .hmc_mode       = 0,
289 #else
290         .register_host  = 1,
291         .hmc_mode       = 16,
292         .rwc            = 1,
293 #endif
294         .pins[0]        = 2,
295 };
296
297 #ifdef  CONFIG_OMAP_OSK_MISTRAL
298 static struct omap_lcd_config osk_lcd_config __initdata = {
299         .ctrl_name      = "internal",
300 };
301 #endif
302
303 static struct omap_board_config_kernel osk_config[] __initdata = {
304 #ifdef  CONFIG_OMAP_OSK_MISTRAL
305         { OMAP_TAG_LCD,                 &osk_lcd_config },
306 #endif
307 };
308
309 #ifdef  CONFIG_OMAP_OSK_MISTRAL
310
311 #include <linux/input.h>
312 #include <linux/i2c/at24.h>
313 #include <linux/spi/spi.h>
314 #include <linux/spi/ads7846.h>
315
316 #include <plat/keypad.h>
317
318 static struct at24_platform_data at24c04 = {
319         .byte_len       = SZ_4K / 8,
320         .page_size      = 16,
321 };
322
323 static struct i2c_board_info __initdata mistral_i2c_board_info[] = {
324         {
325                 /* NOTE:  powered from LCD supply */
326                 I2C_BOARD_INFO("24c04", 0x50),
327                 .platform_data  = &at24c04,
328         },
329         /* TODO when driver support is ready:
330          *  - optionally ov9640 camera sensor at 0x30
331          */
332 };
333
334 static const unsigned int osk_keymap[] = {
335         /* KEY(col, row, code) */
336         KEY(0, 0, KEY_F1),              /* SW4 */
337         KEY(3, 0, KEY_UP),              /* (sw2/up) */
338         KEY(1, 1, KEY_LEFTCTRL),        /* SW5 */
339         KEY(2, 1, KEY_LEFT),            /* (sw2/left) */
340         KEY(0, 2, KEY_SPACE),           /* SW3 */
341         KEY(1, 2, KEY_ESC),             /* SW6 */
342         KEY(2, 2, KEY_DOWN),            /* (sw2/down) */
343         KEY(2, 3, KEY_ENTER),           /* (sw2/select) */
344         KEY(3, 3, KEY_RIGHT),           /* (sw2/right) */
345 };
346
347 static const struct matrix_keymap_data osk_keymap_data = {
348         .keymap         = osk_keymap,
349         .keymap_size    = ARRAY_SIZE(osk_keymap),
350 };
351
352 static struct omap_kp_platform_data osk_kp_data = {
353         .rows           = 8,
354         .cols           = 8,
355         .keymap_data    = &osk_keymap_data,
356         .delay          = 9,
357 };
358
359 static struct resource osk5912_kp_resources[] = {
360         [0] = {
361                 .start  = INT_KEYBOARD,
362                 .end    = INT_KEYBOARD,
363                 .flags  = IORESOURCE_IRQ,
364         },
365 };
366
367 static struct platform_device osk5912_kp_device = {
368         .name           = "omap-keypad",
369         .id             = -1,
370         .dev            = {
371                 .platform_data = &osk_kp_data,
372         },
373         .num_resources  = ARRAY_SIZE(osk5912_kp_resources),
374         .resource       = osk5912_kp_resources,
375 };
376
377 static struct omap_backlight_config mistral_bl_data = {
378         .default_intensity      = 0xa0,
379 };
380
381 static struct platform_device mistral_bl_device = {
382         .name           = "omap-bl",
383         .id             = -1,
384         .dev            = {
385                 .platform_data = &mistral_bl_data,
386         },
387 };
388
389 static struct platform_device osk5912_lcd_device = {
390         .name           = "lcd_osk",
391         .id             = -1,
392 };
393
394 static struct platform_device *mistral_devices[] __initdata = {
395         &osk5912_kp_device,
396         &mistral_bl_device,
397         &osk5912_lcd_device,
398 };
399
400 static int mistral_get_pendown_state(void)
401 {
402         return !gpio_get_value(4);
403 }
404
405 static const struct ads7846_platform_data mistral_ts_info = {
406         .model                  = 7846,
407         .vref_delay_usecs       = 100,  /* internal, no capacitor */
408         .x_plate_ohms           = 419,
409         .y_plate_ohms           = 486,
410         .get_pendown_state      = mistral_get_pendown_state,
411 };
412
413 static struct spi_board_info __initdata mistral_boardinfo[] = { {
414         /* MicroWire (bus 2) CS0 has an ads7846e */
415         .modalias               = "ads7846",
416         .platform_data          = &mistral_ts_info,
417         .irq                    = OMAP_GPIO_IRQ(4),
418         .max_speed_hz           = 120000 /* max sample rate at 3V */
419                                         * 26 /* command + data + overhead */,
420         .bus_num                = 2,
421         .chip_select            = 0,
422 } };
423
424 #ifdef  CONFIG_PM
425 static irqreturn_t
426 osk_mistral_wake_interrupt(int irq, void *ignored)
427 {
428         return IRQ_HANDLED;
429 }
430 #endif
431
432 static void __init osk_mistral_init(void)
433 {
434         /* NOTE:  we could actually tell if there's a Mistral board
435          * attached, e.g. by trying to read something from the ads7846.
436          * But this arch_init() code is too early for that, since we
437          * can't talk to the ads or even the i2c eeprom.
438          */
439
440         /* parallel camera interface */
441         omap_cfg_reg(J15_1610_CAM_LCLK);
442         omap_cfg_reg(J18_1610_CAM_D7);
443         omap_cfg_reg(J19_1610_CAM_D6);
444         omap_cfg_reg(J14_1610_CAM_D5);
445         omap_cfg_reg(K18_1610_CAM_D4);
446         omap_cfg_reg(K19_1610_CAM_D3);
447         omap_cfg_reg(K15_1610_CAM_D2);
448         omap_cfg_reg(K14_1610_CAM_D1);
449         omap_cfg_reg(L19_1610_CAM_D0);
450         omap_cfg_reg(L18_1610_CAM_VS);
451         omap_cfg_reg(L15_1610_CAM_HS);
452         omap_cfg_reg(M19_1610_CAM_RSTZ);
453         omap_cfg_reg(Y15_1610_CAM_OUTCLK);
454
455         /* serial camera interface */
456         omap_cfg_reg(H19_1610_CAM_EXCLK);
457         omap_cfg_reg(W13_1610_CCP_CLKM);
458         omap_cfg_reg(Y12_1610_CCP_CLKP);
459         /* CCP_DATAM CONFLICTS WITH UART1.TX (and serial console) */
460         /* omap_cfg_reg(Y14_1610_CCP_DATAM); */
461         omap_cfg_reg(W14_1610_CCP_DATAP);
462
463         /* CAM_PWDN */
464         if (gpio_request(11, "cam_pwdn") == 0) {
465                 omap_cfg_reg(N20_1610_GPIO11);
466                 gpio_direction_output(11, 0);
467         } else
468                 pr_debug("OSK+Mistral: CAM_PWDN is awol\n");
469
470
471         /* omap_cfg_reg(P19_1610_GPIO6); */     /* BUSY */
472         gpio_request(6, "ts_busy");
473         gpio_direction_input(6);
474
475         omap_cfg_reg(P20_1610_GPIO4);   /* PENIRQ */
476         gpio_request(4, "ts_int");
477         gpio_direction_input(4);
478         irq_set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING);
479
480         spi_register_board_info(mistral_boardinfo,
481                         ARRAY_SIZE(mistral_boardinfo));
482
483         /* the sideways button (SW1) is for use as a "wakeup" button
484          *
485          * NOTE:  The Mistral board has the wakeup button (SW1) wired
486          * to the LCD 3.3V rail, which is powered down during suspend.
487          * To allow this button to wake up the omap, work around this
488          * HW bug by rewiring SW1 to use the main 3.3V rail.
489          */
490         omap_cfg_reg(N15_1610_MPUIO2);
491         if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) {
492                 int ret = 0;
493                 int irq = gpio_to_irq(OMAP_MPUIO(2));
494
495                 gpio_direction_input(OMAP_MPUIO(2));
496                 irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
497 #ifdef  CONFIG_PM
498                 /* share the IRQ in case someone wants to use the
499                  * button for more than wakeup from system sleep.
500                  */
501                 ret = request_irq(irq,
502                                 &osk_mistral_wake_interrupt,
503                                 IRQF_SHARED, "mistral_wakeup",
504                                 &osk_mistral_wake_interrupt);
505                 if (ret != 0) {
506                         gpio_free(OMAP_MPUIO(2));
507                         printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n",
508                                 ret);
509                 } else
510                         enable_irq_wake(irq);
511 #endif
512         } else
513                 printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n");
514
515         /* LCD:  backlight, and power; power controls other devices on the
516          * board, like the touchscreen, EEPROM, and wakeup (!) switch.
517          */
518         omap_cfg_reg(PWL);
519         if (gpio_request(2, "lcd_pwr") == 0)
520                 gpio_direction_output(2, 1);
521
522         i2c_register_board_info(1, mistral_i2c_board_info,
523                         ARRAY_SIZE(mistral_i2c_board_info));
524
525         platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
526 }
527 #else
528 static void __init osk_mistral_init(void) { }
529 #endif
530
531 #define EMIFS_CS3_VAL   (0x88013141)
532
533 static void __init osk_init(void)
534 {
535         u32 l;
536
537         osk_init_smc91x();
538         osk_init_cf();
539
540         /* Workaround for wrong CS3 (NOR flash) timing
541          * There are some U-Boot versions out there which configure
542          * wrong CS3 memory timings. This mainly leads to CRC
543          * or similar errors if you use NOR flash (e.g. with JFFS2)
544          */
545         l = omap_readl(EMIFS_CCS(3));
546         if (l != EMIFS_CS3_VAL)
547                 omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
548
549         osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
550         osk_flash_resource.end += SZ_32M - 1;
551         platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
552         omap_board_config = osk_config;
553         omap_board_config_size = ARRAY_SIZE(osk_config);
554
555         l = omap_readl(USB_TRANSCEIVER_CTRL);
556         l |= (3 << 1);
557         omap_writel(l, USB_TRANSCEIVER_CTRL);
558
559         omap1_usb_init(&osk_usb_config);
560
561         /* irq for tps65010 chip */
562         /* bootloader effectively does:  omap_cfg_reg(U19_1610_MPUIO1); */
563         if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
564                 gpio_direction_input(OMAP_MPUIO(1));
565
566         omap_serial_init();
567         omap_register_i2c_bus(1, 400, osk_i2c_board_info,
568                               ARRAY_SIZE(osk_i2c_board_info));
569         osk_mistral_init();
570 }
571
572 MACHINE_START(OMAP_OSK, "TI-OSK")
573         /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
574         .atag_offset    = 0x100,
575         .map_io         = omap16xx_map_io,
576         .init_early     = omap1_init_early,
577         .reserve        = omap_reserve,
578         .init_irq       = omap1_init_irq,
579         .init_machine   = osk_init,
580         .timer          = &omap1_timer,
581 MACHINE_END