2 * linux/arch/arm/mach-omap2/board-n8x0.c
4 * Copyright (C) 2005-2009 Nokia Corporation
5 * Author: Juha Yrjola <juha.yrjola@nokia.com>
7 * Modified from mach-omap2/board-generic.c
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.
14 #include <linux/clk.h>
15 #include <linux/delay.h>
16 #include <linux/gpio.h>
17 #include <linux/init.h>
19 #include <linux/irq.h>
20 #include <linux/stddef.h>
21 #include <linux/i2c.h>
22 #include <linux/spi/spi.h>
23 #include <linux/usb/musb.h>
24 #include <linux/platform_data/spi-omap2-mcspi.h>
25 #include <linux/platform_data/mtd-onenand-omap2.h>
26 #include <linux/mfd/menelaus.h>
27 #include <sound/tlv320aic3x.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach-types.h>
35 #include "gpmc-onenand.h"
37 #define TUSB6010_ASYNC_CS 1
38 #define TUSB6010_SYNC_CS 4
39 #define TUSB6010_GPIO_INT 58
40 #define TUSB6010_GPIO_ENABLE 0
41 #define TUSB6010_DMACHAN 0x3f
43 #define NOKIA_N810_WIMAX (1 << 2)
44 #define NOKIA_N810 (1 << 1)
45 #define NOKIA_N800 (1 << 0)
47 static u32 board_caps;
49 #define board_is_n800() (board_caps & NOKIA_N800)
50 #define board_is_n810() (board_caps & NOKIA_N810)
51 #define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX)
53 static void board_check_revision(void)
55 if (of_have_populated_dt()) {
56 if (of_machine_is_compatible("nokia,n800"))
57 board_caps = NOKIA_N800;
58 else if (of_machine_is_compatible("nokia,n810"))
59 board_caps = NOKIA_N810;
60 else if (of_machine_is_compatible("nokia,n810-wimax"))
61 board_caps = NOKIA_N810_WIMAX;
65 pr_err("Unknown board\n");
68 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
70 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
71 * 1.5 V voltage regulators of PM companion chip. Companion chip will then
72 * provide then PGOOD signal to TUSB6010 which will release it from reset.
74 static int tusb_set_power(int state)
79 gpio_set_value(TUSB6010_GPIO_ENABLE, 1);
82 /* Wait until TUSB6010 pulls INT pin down */
84 while (i && gpio_get_value(TUSB6010_GPIO_INT)) {
90 printk(KERN_ERR "tusb: powerup failed\n");
94 gpio_set_value(TUSB6010_GPIO_ENABLE, 0);
101 static struct musb_hdrc_config musb_config = {
108 static struct musb_hdrc_platform_data tusb_data = {
110 .set_power = tusb_set_power,
111 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
112 .power = 100, /* Max 100 mA VBUS for host mode */
113 .config = &musb_config,
116 static void __init n8x0_usb_init(void)
119 static char announce[] __initdata = KERN_INFO "TUSB 6010\n";
121 /* PM companion chip power control pin */
122 ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW,
125 printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
126 TUSB6010_GPIO_ENABLE);
131 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
132 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
133 TUSB6010_GPIO_INT, TUSB6010_DMACHAN);
142 gpio_free(TUSB6010_GPIO_ENABLE);
146 static void __init n8x0_usb_init(void) {}
148 #endif /*CONFIG_USB_MUSB_TUSB6010 */
151 static struct omap2_mcspi_device_config p54spi_mcspi_config = {
155 static struct spi_board_info n800_spi_board_info[] __initdata = {
157 .modalias = "p54spi",
160 .max_speed_hz = 48000000,
161 .controller_data = &p54spi_mcspi_config,
165 #if defined(CONFIG_MENELAUS) && \
166 (defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE))
169 * On both N800 and N810, only the first of the two MMC controllers is in use.
170 * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
171 * On N800, both slots are powered via Menelaus. On N810, only one of the
172 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
174 * VMMC slot 1 on both N800 and N810
175 * VDCDC3_APE and VMCS2_APE slot 2 on N800
176 * GPIO23 and GPIO9 slot 2 EMMC on N810
179 #define N8X0_SLOT_SWITCH_GPIO 96
180 #define N810_EMMC_VSD_GPIO 23
181 #define N810_EMMC_VIO_GPIO 9
183 static int slot1_cover_open;
184 static int slot2_cover_open;
185 static struct device *mmc_device;
187 static int n8x0_mmc_switch_slot(struct device *dev, int slot)
189 #ifdef CONFIG_MMC_DEBUG
190 dev_dbg(dev, "Choose slot %d\n", slot + 1);
192 gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
196 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
197 int power_on, int vdd)
201 #ifdef CONFIG_MMC_DEBUG
202 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
203 power_on ? "on" : "off", vdd);
207 return menelaus_set_vmmc(0);
220 case MMC_VDD_165_195:
226 return menelaus_set_vmmc(mV);
229 return menelaus_set_vdcdc(3, 0);
254 case MMC_VDD_165_195:
260 return menelaus_set_vdcdc(3, mV);
265 static void n810_set_power_emmc(struct device *dev,
268 dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
271 gpio_set_value(N810_EMMC_VSD_GPIO, 1);
273 gpio_set_value(N810_EMMC_VIO_GPIO, 1);
276 gpio_set_value(N810_EMMC_VIO_GPIO, 0);
278 gpio_set_value(N810_EMMC_VSD_GPIO, 0);
283 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
286 if (board_is_n800() || slot == 0)
287 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
289 n810_set_power_emmc(dev, power_on);
294 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
298 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
299 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
300 BUG_ON(slot != 0 && slot != 1);
303 case MMC_BUSMODE_OPENDRAIN:
304 r = menelaus_set_mmc_opendrain(slot, 1);
306 case MMC_BUSMODE_PUSHPULL:
307 r = menelaus_set_mmc_opendrain(slot, 0);
312 if (r != 0 && printk_ratelimit())
313 dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
318 static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
321 BUG_ON(slot != 1 && slot != 2);
323 return slot1_cover_open;
325 return slot2_cover_open;
328 static void n8x0_mmc_callback(void *data, u8 card_mask)
330 int bit, *openp, index;
332 if (board_is_n800()) {
334 openp = &slot2_cover_open;
338 openp = &slot1_cover_open;
347 #ifdef CONFIG_MMC_OMAP
348 omap_mmc_notify_cover_event(mmc_device, index, *openp);
350 pr_warn("MMC: notify cover event not available\n");
354 static int n8x0_mmc_late_init(struct device *dev)
361 r = menelaus_set_slot_sel(1);
370 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
374 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
375 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
377 r = menelaus_set_mmc_slot(1, 1, 0, 1);
380 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
384 r = menelaus_get_slot_pin_states();
388 if (board_is_n800()) {
390 openp = &slot2_cover_open;
393 openp = &slot1_cover_open;
394 slot2_cover_open = 0;
397 /* All slot pin bits seem to be inversed until first switch change */
398 if (r == 0xf || r == (0xf & ~bit))
406 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
411 static void n8x0_mmc_shutdown(struct device *dev)
420 menelaus_set_mmc_slot(1, 0, 0, 0);
421 menelaus_set_mmc_slot(2, 0, vs2sel, 0);
424 static void n8x0_mmc_cleanup(struct device *dev)
426 menelaus_unregister_mmc_callback();
428 gpio_free(N8X0_SLOT_SWITCH_GPIO);
430 if (board_is_n810()) {
431 gpio_free(N810_EMMC_VSD_GPIO);
432 gpio_free(N810_EMMC_VIO_GPIO);
437 * MMC controller1 has two slots that are multiplexed via I2C.
438 * MMC controller2 is not in use.
440 static struct omap_mmc_platform_data mmc1_data = {
442 .switch_slot = n8x0_mmc_switch_slot,
443 .init = n8x0_mmc_late_init,
444 .cleanup = n8x0_mmc_cleanup,
445 .shutdown = n8x0_mmc_shutdown,
446 .max_freq = 24000000,
449 .set_power = n8x0_mmc_set_power,
450 .set_bus_mode = n8x0_mmc_set_bus_mode,
451 .get_cover_state = n8x0_mmc_get_cover_state,
452 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 |
453 MMC_VDD_32_33 | MMC_VDD_33_34,
457 .set_power = n8x0_mmc_set_power,
458 .set_bus_mode = n8x0_mmc_set_bus_mode,
459 .get_cover_state = n8x0_mmc_get_cover_state,
460 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 |
461 MMC_VDD_21_22 | MMC_VDD_22_23 |
462 MMC_VDD_23_24 | MMC_VDD_24_25 |
463 MMC_VDD_27_28 | MMC_VDD_28_29 |
464 MMC_VDD_29_30 | MMC_VDD_30_31 |
465 MMC_VDD_32_33 | MMC_VDD_33_34,
470 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
472 static struct gpio n810_emmc_gpios[] __initdata = {
473 { N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
474 { N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
477 static void __init n8x0_mmc_init(void)
481 if (board_is_n810()) {
482 mmc1_data.slots[0].name = "external";
485 * Some Samsung Movinand chips do not like open-ended
486 * multi-block reads and fall to braind-dead state
487 * while doing so. Reducing the number of blocks in
488 * the transfer or delays in clock disable do not help
490 mmc1_data.slots[1].name = "internal";
491 mmc1_data.slots[1].ban_openended = 1;
494 err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
499 if (board_is_n810()) {
500 err = gpio_request_array(n810_emmc_gpios,
501 ARRAY_SIZE(n810_emmc_gpios));
503 gpio_free(N8X0_SLOT_SWITCH_GPIO);
508 mmc1_data.nr_slots = 2;
509 mmc_data[0] = &mmc1_data;
512 static struct omap_mmc_platform_data mmc1_data;
513 void __init n8x0_mmc_init(void)
516 #endif /* CONFIG_MMC_OMAP */
518 #ifdef CONFIG_MENELAUS
520 static int n8x0_auto_sleep_regulators(void)
525 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \
526 | EN_VAUX_SLEEP | EN_VIO_SLEEP \
527 | EN_VMEM_SLEEP | EN_DC3_SLEEP \
528 | EN_VC_SLEEP | EN_DC2_SLEEP;
530 ret = menelaus_set_regulator_sleep(1, val);
532 pr_err("Could not set regulators to sleep on menelaus: %u\n",
539 static int n8x0_auto_voltage_scale(void)
543 ret = menelaus_set_vcore_hw(1400, 1050);
545 pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
551 static int n8x0_menelaus_late_init(struct device *dev)
555 ret = n8x0_auto_voltage_scale();
558 ret = n8x0_auto_sleep_regulators();
565 static int n8x0_menelaus_late_init(struct device *dev)
571 static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
572 .late_init = n8x0_menelaus_late_init,
575 static struct i2c_board_info __initdata n8x0_i2c_board_info_1[] __initdata = {
577 I2C_BOARD_INFO("menelaus", 0x72),
578 .irq = 7 + OMAP_INTC_START,
579 .platform_data = &n8x0_menelaus_platform_data,
583 static struct aic3x_pdata n810_aic33_data __initdata = {
587 static struct i2c_board_info n810_i2c_board_info_2[] __initdata = {
589 I2C_BOARD_INFO("tlv320aic3x", 0x18),
590 .platform_data = &n810_aic33_data,
594 static int __init n8x0_late_initcall(void)
604 omap_late_initcall(n8x0_late_initcall);
607 * Legacy init pdata init for n8x0. Note that we want to follow the
608 * I2C bus numbering starting at 0 for device tree like other omaps.
610 void * __init n8x0_legacy_init(void)
612 board_check_revision();
613 spi_register_board_info(n800_spi_board_info,
614 ARRAY_SIZE(n800_spi_board_info));
615 i2c_register_board_info(0, n8x0_i2c_board_info_1,
616 ARRAY_SIZE(n8x0_i2c_board_info_1));
618 i2c_register_board_info(1, n810_i2c_board_info_2,
619 ARRAY_SIZE(n810_i2c_board_info_2));