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board-n8x0.c
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1 /*
2  * linux/arch/arm/mach-omap2/board-n8x0.c
3  *
4  * Copyright (C) 2005-2009 Nokia Corporation
5  * Author: Juha Yrjola <[email protected]>
6  *
7  * Modified from mach-omap2/board-generic.c
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  */
13 
14 #include <linux/clk.h>
15 #include <linux/delay.h>
16 #include <linux/gpio.h>
17 #include <linux/init.h>
18 #include <linux/io.h>
19 #include <linux/stddef.h>
20 #include <linux/i2c.h>
21 #include <linux/spi/spi.h>
22 #include <linux/usb/musb.h>
23 #include <linux/platform_data/spi-omap2-mcspi.h>
24 #include <linux/platform_data/mtd-onenand-omap2.h>
25 #include <sound/tlv320aic3x.h>
26 
27 #include <asm/mach/arch.h>
28 #include <asm/mach-types.h>
29 
30 #include "common.h"
31 #include <plat/menelaus.h>
32 #include <plat/mmc.h>
33 
34 #include "mux.h"
35 
36 #define TUSB6010_ASYNC_CS 1
37 #define TUSB6010_SYNC_CS 4
38 #define TUSB6010_GPIO_INT 58
39 #define TUSB6010_GPIO_ENABLE 0
40 #define TUSB6010_DMACHAN 0x3f
41 
42 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
43 /*
44  * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
45  * 1.5 V voltage regulators of PM companion chip. Companion chip will then
46  * provide then PGOOD signal to TUSB6010 which will release it from reset.
47  */
48 static int tusb_set_power(int state)
49 {
50  int i, retval = 0;
51 
52  if (state) {
53  gpio_set_value(TUSB6010_GPIO_ENABLE, 1);
54  msleep(1);
55 
56  /* Wait until TUSB6010 pulls INT pin down */
57  i = 100;
58  while (i && gpio_get_value(TUSB6010_GPIO_INT)) {
59  msleep(1);
60  i--;
61  }
62 
63  if (!i) {
64  printk(KERN_ERR "tusb: powerup failed\n");
65  retval = -ENODEV;
66  }
67  } else {
68  gpio_set_value(TUSB6010_GPIO_ENABLE, 0);
69  msleep(10);
70  }
71 
72  return retval;
73 }
74 
75 static struct musb_hdrc_config musb_config = {
76  .multipoint = 1,
77  .dyn_fifo = 1,
78  .num_eps = 16,
79  .ram_bits = 12,
80 };
81 
82 static struct musb_hdrc_platform_data tusb_data = {
83 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
84  .mode = MUSB_OTG,
85 #else
86  .mode = MUSB_HOST,
87 #endif
88  .set_power = tusb_set_power,
89  .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
90  .power = 100, /* Max 100 mA VBUS for host mode */
91  .config = &musb_config,
92 };
93 
94 static void __init n8x0_usb_init(void)
95 {
96  int ret = 0;
97  static char announce[] __initdata = KERN_INFO "TUSB 6010\n";
98 
99  /* PM companion chip power control pin */
100  ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW,
101  "TUSB6010 enable");
102  if (ret != 0) {
103  printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
104  TUSB6010_GPIO_ENABLE);
105  return;
106  }
107  tusb_set_power(0);
108 
109  ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
110  TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
111  TUSB6010_GPIO_INT, TUSB6010_DMACHAN);
112  if (ret != 0)
113  goto err;
114 
115  printk(announce);
116 
117  return;
118 
119 err:
120  gpio_free(TUSB6010_GPIO_ENABLE);
121 }
122 #else
123 
124 static void __init n8x0_usb_init(void) {}
125 
126 #endif /*CONFIG_USB_MUSB_TUSB6010 */
127 
128 
129 static struct omap2_mcspi_device_config p54spi_mcspi_config = {
130  .turbo_mode = 0,
131 };
132 
133 static struct spi_board_info n800_spi_board_info[] __initdata = {
134  {
135  .modalias = "p54spi",
136  .bus_num = 2,
137  .chip_select = 0,
138  .max_speed_hz = 48000000,
139  .controller_data = &p54spi_mcspi_config,
140  },
141 };
142 
143 #if defined(CONFIG_MTD_ONENAND_OMAP2) || \
144  defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
145 
146 static struct mtd_partition onenand_partitions[] = {
147  {
148  .name = "bootloader",
149  .offset = 0,
150  .size = 0x20000,
151  .mask_flags = MTD_WRITEABLE, /* Force read-only */
152  },
153  {
154  .name = "config",
155  .offset = MTDPART_OFS_APPEND,
156  .size = 0x60000,
157  },
158  {
159  .name = "kernel",
160  .offset = MTDPART_OFS_APPEND,
161  .size = 0x200000,
162  },
163  {
164  .name = "initfs",
165  .offset = MTDPART_OFS_APPEND,
166  .size = 0x400000,
167  },
168  {
169  .name = "rootfs",
170  .offset = MTDPART_OFS_APPEND,
171  .size = MTDPART_SIZ_FULL,
172  },
173 };
174 
175 static struct omap_onenand_platform_data board_onenand_data[] = {
176  {
177  .cs = 0,
178  .gpio_irq = 26,
179  .parts = onenand_partitions,
180  .nr_parts = ARRAY_SIZE(onenand_partitions),
181  .flags = ONENAND_SYNC_READ,
182  }
183 };
184 #endif
185 
186 #if defined(CONFIG_MENELAUS) && \
187  (defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE))
188 
189 /*
190  * On both N800 and N810, only the first of the two MMC controllers is in use.
191  * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
192  * On N800, both slots are powered via Menelaus. On N810, only one of the
193  * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
194  *
195  * VMMC slot 1 on both N800 and N810
196  * VDCDC3_APE and VMCS2_APE slot 2 on N800
197  * GPIO23 and GPIO9 slot 2 EMMC on N810
198  *
199  */
200 #define N8X0_SLOT_SWITCH_GPIO 96
201 #define N810_EMMC_VSD_GPIO 23
202 #define N810_EMMC_VIO_GPIO 9
203 
204 static int slot1_cover_open;
205 static int slot2_cover_open;
206 static struct device *mmc_device;
207 
208 static int n8x0_mmc_switch_slot(struct device *dev, int slot)
209 {
210 #ifdef CONFIG_MMC_DEBUG
211  dev_dbg(dev, "Choose slot %d\n", slot + 1);
212 #endif
213  gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
214  return 0;
215 }
216 
217 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
218  int power_on, int vdd)
219 {
220  int mV;
221 
222 #ifdef CONFIG_MMC_DEBUG
223  dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
224  power_on ? "on" : "off", vdd);
225 #endif
226  if (slot == 0) {
227  if (!power_on)
228  return menelaus_set_vmmc(0);
229  switch (1 << vdd) {
230  case MMC_VDD_33_34:
231  case MMC_VDD_32_33:
232  case MMC_VDD_31_32:
233  mV = 3100;
234  break;
235  case MMC_VDD_30_31:
236  mV = 3000;
237  break;
238  case MMC_VDD_28_29:
239  mV = 2800;
240  break;
241  case MMC_VDD_165_195:
242  mV = 1850;
243  break;
244  default:
245  BUG();
246  }
247  return menelaus_set_vmmc(mV);
248  } else {
249  if (!power_on)
250  return menelaus_set_vdcdc(3, 0);
251  switch (1 << vdd) {
252  case MMC_VDD_33_34:
253  case MMC_VDD_32_33:
254  mV = 3300;
255  break;
256  case MMC_VDD_30_31:
257  case MMC_VDD_29_30:
258  mV = 3000;
259  break;
260  case MMC_VDD_28_29:
261  case MMC_VDD_27_28:
262  mV = 2800;
263  break;
264  case MMC_VDD_24_25:
265  case MMC_VDD_23_24:
266  mV = 2400;
267  break;
268  case MMC_VDD_22_23:
269  case MMC_VDD_21_22:
270  mV = 2200;
271  break;
272  case MMC_VDD_20_21:
273  mV = 2000;
274  break;
275  case MMC_VDD_165_195:
276  mV = 1800;
277  break;
278  default:
279  BUG();
280  }
281  return menelaus_set_vdcdc(3, mV);
282  }
283  return 0;
284 }
285 
286 static void n810_set_power_emmc(struct device *dev,
287  int power_on)
288 {
289  dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
290 
291  if (power_on) {
292  gpio_set_value(N810_EMMC_VSD_GPIO, 1);
293  msleep(1);
294  gpio_set_value(N810_EMMC_VIO_GPIO, 1);
295  msleep(1);
296  } else {
297  gpio_set_value(N810_EMMC_VIO_GPIO, 0);
298  msleep(50);
299  gpio_set_value(N810_EMMC_VSD_GPIO, 0);
300  msleep(50);
301  }
302 }
303 
304 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
305  int vdd)
306 {
307  if (machine_is_nokia_n800() || slot == 0)
308  return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
309 
310  n810_set_power_emmc(dev, power_on);
311 
312  return 0;
313 }
314 
315 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
316 {
317  int r;
318 
319  dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
320  bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
321  BUG_ON(slot != 0 && slot != 1);
322  slot++;
323  switch (bus_mode) {
324  case MMC_BUSMODE_OPENDRAIN:
325  r = menelaus_set_mmc_opendrain(slot, 1);
326  break;
327  case MMC_BUSMODE_PUSHPULL:
328  r = menelaus_set_mmc_opendrain(slot, 0);
329  break;
330  default:
331  BUG();
332  }
333  if (r != 0 && printk_ratelimit())
334  dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
335  slot);
336  return r;
337 }
338 
339 static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
340 {
341  slot++;
342  BUG_ON(slot != 1 && slot != 2);
343  if (slot == 1)
344  return slot1_cover_open;
345  else
346  return slot2_cover_open;
347 }
348 
349 static void n8x0_mmc_callback(void *data, u8 card_mask)
350 {
351  int bit, *openp, index;
352 
353  if (machine_is_nokia_n800()) {
354  bit = 1 << 1;
355  openp = &slot2_cover_open;
356  index = 1;
357  } else {
358  bit = 1;
359  openp = &slot1_cover_open;
360  index = 0;
361  }
362 
363  if (card_mask & bit)
364  *openp = 1;
365  else
366  *openp = 0;
367 
368 #ifdef CONFIG_MMC_OMAP
369  omap_mmc_notify_cover_event(mmc_device, index, *openp);
370 #else
371  pr_warn("MMC: notify cover event not available\n");
372 #endif
373 }
374 
375 static int n8x0_mmc_late_init(struct device *dev)
376 {
377  int r, bit, *openp;
378  int vs2sel;
379 
380  mmc_device = dev;
381 
382  r = menelaus_set_slot_sel(1);
383  if (r < 0)
384  return r;
385 
386  if (machine_is_nokia_n800())
387  vs2sel = 0;
388  else
389  vs2sel = 2;
390 
391  r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
392  if (r < 0)
393  return r;
394 
395  n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
396  n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
397 
398  r = menelaus_set_mmc_slot(1, 1, 0, 1);
399  if (r < 0)
400  return r;
401  r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
402  if (r < 0)
403  return r;
404 
405  r = menelaus_get_slot_pin_states();
406  if (r < 0)
407  return r;
408 
409  if (machine_is_nokia_n800()) {
410  bit = 1 << 1;
411  openp = &slot2_cover_open;
412  } else {
413  bit = 1;
414  openp = &slot1_cover_open;
415  slot2_cover_open = 0;
416  }
417 
418  /* All slot pin bits seem to be inversed until first switch change */
419  if (r == 0xf || r == (0xf & ~bit))
420  r = ~r;
421 
422  if (r & bit)
423  *openp = 1;
424  else
425  *openp = 0;
426 
427  r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
428 
429  return r;
430 }
431 
432 static void n8x0_mmc_shutdown(struct device *dev)
433 {
434  int vs2sel;
435 
436  if (machine_is_nokia_n800())
437  vs2sel = 0;
438  else
439  vs2sel = 2;
440 
441  menelaus_set_mmc_slot(1, 0, 0, 0);
442  menelaus_set_mmc_slot(2, 0, vs2sel, 0);
443 }
444 
445 static void n8x0_mmc_cleanup(struct device *dev)
446 {
447  menelaus_unregister_mmc_callback();
448 
449  gpio_free(N8X0_SLOT_SWITCH_GPIO);
450 
451  if (machine_is_nokia_n810()) {
452  gpio_free(N810_EMMC_VSD_GPIO);
453  gpio_free(N810_EMMC_VIO_GPIO);
454  }
455 }
456 
457 /*
458  * MMC controller1 has two slots that are multiplexed via I2C.
459  * MMC controller2 is not in use.
460  */
461 static struct omap_mmc_platform_data mmc1_data = {
462  .nr_slots = 2,
463  .switch_slot = n8x0_mmc_switch_slot,
464  .init = n8x0_mmc_late_init,
465  .cleanup = n8x0_mmc_cleanup,
466  .shutdown = n8x0_mmc_shutdown,
467  .max_freq = 24000000,
468  .slots[0] = {
469  .wires = 4,
470  .set_power = n8x0_mmc_set_power,
471  .set_bus_mode = n8x0_mmc_set_bus_mode,
472  .get_cover_state = n8x0_mmc_get_cover_state,
473  .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 |
474  MMC_VDD_32_33 | MMC_VDD_33_34,
475  .name = "internal",
476  },
477  .slots[1] = {
478  .set_power = n8x0_mmc_set_power,
479  .set_bus_mode = n8x0_mmc_set_bus_mode,
480  .get_cover_state = n8x0_mmc_get_cover_state,
481  .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 |
482  MMC_VDD_21_22 | MMC_VDD_22_23 |
483  MMC_VDD_23_24 | MMC_VDD_24_25 |
484  MMC_VDD_27_28 | MMC_VDD_28_29 |
485  MMC_VDD_29_30 | MMC_VDD_30_31 |
486  MMC_VDD_32_33 | MMC_VDD_33_34,
487  .name = "external",
488  },
489 };
490 
491 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
492 
493 static struct gpio n810_emmc_gpios[] __initdata = {
494  { N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
495  { N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
496 };
497 
498 static void __init n8x0_mmc_init(void)
499 {
500  int err;
501 
502  if (machine_is_nokia_n810()) {
503  mmc1_data.slots[0].name = "external";
504 
505  /*
506  * Some Samsung Movinand chips do not like open-ended
507  * multi-block reads and fall to braind-dead state
508  * while doing so. Reducing the number of blocks in
509  * the transfer or delays in clock disable do not help
510  */
511  mmc1_data.slots[1].name = "internal";
512  mmc1_data.slots[1].ban_openended = 1;
513  }
514 
515  err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
516  "MMC slot switch");
517  if (err)
518  return;
519 
520  if (machine_is_nokia_n810()) {
521  err = gpio_request_array(n810_emmc_gpios,
522  ARRAY_SIZE(n810_emmc_gpios));
523  if (err) {
524  gpio_free(N8X0_SLOT_SWITCH_GPIO);
525  return;
526  }
527  }
528 
529  mmc_data[0] = &mmc1_data;
530  omap242x_init_mmc(mmc_data);
531 }
532 #else
533 
534 void __init n8x0_mmc_init(void)
535 {
536 }
537 #endif /* CONFIG_MMC_OMAP */
538 
539 #ifdef CONFIG_MENELAUS
540 
541 static int n8x0_auto_sleep_regulators(void)
542 {
543  u32 val;
544  int ret;
545 
546  val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \
547  | EN_VAUX_SLEEP | EN_VIO_SLEEP \
548  | EN_VMEM_SLEEP | EN_DC3_SLEEP \
549  | EN_VC_SLEEP | EN_DC2_SLEEP;
550 
551  ret = menelaus_set_regulator_sleep(1, val);
552  if (ret < 0) {
553  pr_err("Could not set regulators to sleep on menelaus: %u\n",
554  ret);
555  return ret;
556  }
557  return 0;
558 }
559 
560 static int n8x0_auto_voltage_scale(void)
561 {
562  int ret;
563 
564  ret = menelaus_set_vcore_hw(1400, 1050);
565  if (ret < 0) {
566  pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
567  return ret;
568  }
569  return 0;
570 }
571 
572 static int n8x0_menelaus_late_init(struct device *dev)
573 {
574  int ret;
575 
576  ret = n8x0_auto_voltage_scale();
577  if (ret < 0)
578  return ret;
579  ret = n8x0_auto_sleep_regulators();
580  if (ret < 0)
581  return ret;
582  return 0;
583 }
584 
585 #else
586 static int n8x0_menelaus_late_init(struct device *dev)
587 {
588  return 0;
589 }
590 #endif
591 
592 static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
593  .late_init = n8x0_menelaus_late_init,
594 };
595 
596 static struct i2c_board_info __initdata n8x0_i2c_board_info_1[] __initdata = {
597  {
598  I2C_BOARD_INFO("menelaus", 0x72),
599  .irq = 7 + OMAP_INTC_START,
600  .platform_data = &n8x0_menelaus_platform_data,
601  },
602 };
603 
604 static struct aic3x_pdata n810_aic33_data __initdata = {
605  .gpio_reset = 118,
606 };
607 
608 static struct i2c_board_info n810_i2c_board_info_2[] __initdata = {
609  {
610  I2C_BOARD_INFO("tlv320aic3x", 0x18),
611  .platform_data = &n810_aic33_data,
612  },
613 };
614 
615 #ifdef CONFIG_OMAP_MUX
616 static struct omap_board_mux board_mux[] __initdata = {
617  /* I2S codec port pins for McBSP block */
618  OMAP2420_MUX(EAC_AC_SCLK, OMAP_MUX_MODE1 | OMAP_PIN_INPUT),
619  OMAP2420_MUX(EAC_AC_FS, OMAP_MUX_MODE1 | OMAP_PIN_INPUT),
620  OMAP2420_MUX(EAC_AC_DIN, OMAP_MUX_MODE1 | OMAP_PIN_INPUT),
621  OMAP2420_MUX(EAC_AC_DOUT, OMAP_MUX_MODE1 | OMAP_PIN_OUTPUT),
622  { .reg_offset = OMAP_MUX_TERMINATOR },
623 };
624 
625 static struct omap_device_pad serial2_pads[] __initdata = {
626  {
627  .name = "uart3_rx_irrx.uart3_rx_irrx",
628  .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP,
629  .enable = OMAP_MUX_MODE0,
630  .idle = OMAP_MUX_MODE3 /* Mux as GPIO for idle */
631  },
632 };
633 
634 static inline void board_serial_init(void)
635 {
636  struct omap_board_data bdata;
637 
638  bdata.flags = 0;
639  bdata.pads = NULL;
640  bdata.pads_cnt = 0;
641 
642  bdata.id = 0;
643  omap_serial_init_port(&bdata, NULL);
644 
645  bdata.id = 1;
646  omap_serial_init_port(&bdata, NULL);
647 
648  bdata.id = 2;
649  bdata.pads = serial2_pads;
650  bdata.pads_cnt = ARRAY_SIZE(serial2_pads);
651  omap_serial_init_port(&bdata, NULL);
652 }
653 
654 #else
655 
656 static inline void board_serial_init(void)
657 {
658  omap_serial_init();
659 }
660 
661 #endif
662 
663 static void __init n8x0_init_machine(void)
664 {
665  omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC);
666  /* FIXME: add n810 spi devices */
667  spi_register_board_info(n800_spi_board_info,
668  ARRAY_SIZE(n800_spi_board_info));
669  omap_register_i2c_bus(1, 400, n8x0_i2c_board_info_1,
670  ARRAY_SIZE(n8x0_i2c_board_info_1));
671  omap_register_i2c_bus(2, 400, NULL, 0);
672  if (machine_is_nokia_n810())
673  i2c_register_board_info(2, n810_i2c_board_info_2,
674  ARRAY_SIZE(n810_i2c_board_info_2));
675  board_serial_init();
676  omap_sdrc_init(NULL, NULL);
677  gpmc_onenand_init(board_onenand_data);
678  n8x0_mmc_init();
679  n8x0_usb_init();
680 }
681 
682 MACHINE_START(NOKIA_N800, "Nokia N800")
683  .atag_offset = 0x100,
684  .reserve = omap_reserve,
685  .map_io = omap242x_map_io,
686  .init_early = omap2420_init_early,
687  .init_irq = omap2_init_irq,
688  .handle_irq = omap2_intc_handle_irq,
689  .init_machine = n8x0_init_machine,
690  .init_late = omap2420_init_late,
691  .timer = &omap2_timer,
692  .restart = omap_prcm_restart,
693 MACHINE_END
694 
695 MACHINE_START(NOKIA_N810, "Nokia N810")
696  .atag_offset = 0x100,
697  .reserve = omap_reserve,
698  .map_io = omap242x_map_io,
699  .init_early = omap2420_init_early,
700  .init_irq = omap2_init_irq,
701  .handle_irq = omap2_intc_handle_irq,
702  .init_machine = n8x0_init_machine,
703  .init_late = omap2420_init_late,
704  .timer = &omap2_timer,
705  .restart = omap_prcm_restart,
706 MACHINE_END
707 
708 MACHINE_START(NOKIA_N810_WIMAX, "Nokia N810 WiMAX")
709  .atag_offset = 0x100,
710  .reserve = omap_reserve,
711  .map_io = omap242x_map_io,
712  .init_early = omap2420_init_early,
713  .init_irq = omap2_init_irq,
714  .handle_irq = omap2_intc_handle_irq,
715  .init_machine = n8x0_init_machine,
716  .init_late = omap2420_init_late,
717  .timer = &omap2_timer,
718  .restart = omap_prcm_restart,
719 MACHINE_END
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