1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-omap2/board-n8x0.c
5 * Copyright (C) 2005-2009 Nokia Corporation
8 * Modified from mach-omap2/board-generic.c
11 #include <linux/clk.h>
12 #include <linux/delay.h>
13 #include <linux/gpio.h>
14 #include <linux/init.h>
16 #include <linux/irq.h>
17 #include <linux/stddef.h>
18 #include <linux/i2c.h>
19 #include <linux/spi/spi.h>
20 #include <linux/usb/musb.h>
21 #include <linux/mmc/host.h>
22 #include <linux/platform_data/spi-omap2-mcspi.h>
23 #include <linux/platform_data/mmc-omap.h>
24 #include <linux/mfd/menelaus.h>
25 #include <sound/tlv320aic3x.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach-types.h>
33 #include "common-board-devices.h"
35 #define TUSB6010_ASYNC_CS 1
36 #define TUSB6010_SYNC_CS 4
37 #define TUSB6010_GPIO_INT 58
38 #define TUSB6010_GPIO_ENABLE 0
39 #define TUSB6010_DMACHAN 0x3f
41 #define NOKIA_N810_WIMAX (1 << 2)
42 #define NOKIA_N810 (1 << 1)
43 #define NOKIA_N800 (1 << 0)
45 static u32 board_caps;
47 #define board_is_n800() (board_caps & NOKIA_N800)
48 #define board_is_n810() (board_caps & NOKIA_N810)
49 #define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX)
51 static void board_check_revision(void)
53 if (of_machine_is_compatible("nokia,n800"))
54 board_caps = NOKIA_N800;
55 else if (of_machine_is_compatible("nokia,n810"))
56 board_caps = NOKIA_N810;
57 else if (of_machine_is_compatible("nokia,n810-wimax"))
58 board_caps = NOKIA_N810_WIMAX;
61 pr_err("Unknown board\n");
64 #if IS_ENABLED(CONFIG_USB_MUSB_TUSB6010)
66 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
67 * 1.5 V voltage regulators of PM companion chip. Companion chip will then
68 * provide then PGOOD signal to TUSB6010 which will release it from reset.
70 static int tusb_set_power(int state)
75 gpio_set_value(TUSB6010_GPIO_ENABLE, 1);
78 /* Wait until TUSB6010 pulls INT pin down */
80 while (i && gpio_get_value(TUSB6010_GPIO_INT)) {
86 printk(KERN_ERR "tusb: powerup failed\n");
90 gpio_set_value(TUSB6010_GPIO_ENABLE, 0);
97 static struct musb_hdrc_config musb_config = {
104 static struct musb_hdrc_platform_data tusb_data = {
106 .set_power = tusb_set_power,
107 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
108 .power = 100, /* Max 100 mA VBUS for host mode */
109 .config = &musb_config,
112 static void __init n8x0_usb_init(void)
115 static const char announce[] __initconst = KERN_INFO "TUSB 6010\n";
117 /* PM companion chip power control pin */
118 ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW,
121 printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
122 TUSB6010_GPIO_ENABLE);
127 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
128 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
129 TUSB6010_GPIO_INT, TUSB6010_DMACHAN);
138 gpio_free(TUSB6010_GPIO_ENABLE);
142 static void __init n8x0_usb_init(void) {}
144 #endif /*CONFIG_USB_MUSB_TUSB6010 */
147 static struct omap2_mcspi_device_config p54spi_mcspi_config = {
151 static struct spi_board_info n800_spi_board_info[] __initdata = {
153 .modalias = "p54spi",
156 .max_speed_hz = 48000000,
157 .controller_data = &p54spi_mcspi_config,
161 #if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP)
164 * On both N800 and N810, only the first of the two MMC controllers is in use.
165 * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
166 * On N800, both slots are powered via Menelaus. On N810, only one of the
167 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
169 * VMMC slot 1 on both N800 and N810
170 * VDCDC3_APE and VMCS2_APE slot 2 on N800
171 * GPIO23 and GPIO9 slot 2 EMMC on N810
174 #define N8X0_SLOT_SWITCH_GPIO 96
175 #define N810_EMMC_VSD_GPIO 23
176 #define N810_EMMC_VIO_GPIO 9
178 static int slot1_cover_open;
179 static int slot2_cover_open;
180 static struct device *mmc_device;
182 static int n8x0_mmc_switch_slot(struct device *dev, int slot)
184 #ifdef CONFIG_MMC_DEBUG
185 dev_dbg(dev, "Choose slot %d\n", slot + 1);
187 gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
191 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
192 int power_on, int vdd)
196 #ifdef CONFIG_MMC_DEBUG
197 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
198 power_on ? "on" : "off", vdd);
202 return menelaus_set_vmmc(0);
215 case MMC_VDD_165_195:
221 return menelaus_set_vmmc(mV);
224 return menelaus_set_vdcdc(3, 0);
249 case MMC_VDD_165_195:
255 return menelaus_set_vdcdc(3, mV);
260 static void n810_set_power_emmc(struct device *dev,
263 dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
266 gpio_set_value(N810_EMMC_VSD_GPIO, 1);
268 gpio_set_value(N810_EMMC_VIO_GPIO, 1);
271 gpio_set_value(N810_EMMC_VIO_GPIO, 0);
273 gpio_set_value(N810_EMMC_VSD_GPIO, 0);
278 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
281 if (board_is_n800() || slot == 0)
282 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
284 n810_set_power_emmc(dev, power_on);
289 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
293 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
294 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
295 BUG_ON(slot != 0 && slot != 1);
298 case MMC_BUSMODE_OPENDRAIN:
299 r = menelaus_set_mmc_opendrain(slot, 1);
301 case MMC_BUSMODE_PUSHPULL:
302 r = menelaus_set_mmc_opendrain(slot, 0);
307 if (r != 0 && printk_ratelimit())
308 dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
313 static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
316 BUG_ON(slot != 1 && slot != 2);
318 return slot1_cover_open;
320 return slot2_cover_open;
323 static void n8x0_mmc_callback(void *data, u8 card_mask)
325 #ifdef CONFIG_MMC_OMAP
326 int bit, *openp, index;
328 if (board_is_n800()) {
330 openp = &slot2_cover_open;
334 openp = &slot1_cover_open;
343 omap_mmc_notify_cover_event(mmc_device, index, *openp);
345 pr_warn("MMC: notify cover event not available\n");
349 static int n8x0_mmc_late_init(struct device *dev)
356 r = menelaus_set_slot_sel(1);
365 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
369 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
370 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
372 r = menelaus_set_mmc_slot(1, 1, 0, 1);
375 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
379 r = menelaus_get_slot_pin_states();
383 if (board_is_n800()) {
385 openp = &slot2_cover_open;
388 openp = &slot1_cover_open;
389 slot2_cover_open = 0;
392 /* All slot pin bits seem to be inversed until first switch change */
393 if (r == 0xf || r == (0xf & ~bit))
401 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
406 static void n8x0_mmc_shutdown(struct device *dev)
415 menelaus_set_mmc_slot(1, 0, 0, 0);
416 menelaus_set_mmc_slot(2, 0, vs2sel, 0);
419 static void n8x0_mmc_cleanup(struct device *dev)
421 menelaus_unregister_mmc_callback();
423 gpio_free(N8X0_SLOT_SWITCH_GPIO);
425 if (board_is_n810()) {
426 gpio_free(N810_EMMC_VSD_GPIO);
427 gpio_free(N810_EMMC_VIO_GPIO);
432 * MMC controller1 has two slots that are multiplexed via I2C.
433 * MMC controller2 is not in use.
435 static struct omap_mmc_platform_data mmc1_data = {
437 .switch_slot = n8x0_mmc_switch_slot,
438 .init = n8x0_mmc_late_init,
439 .cleanup = n8x0_mmc_cleanup,
440 .shutdown = n8x0_mmc_shutdown,
441 .max_freq = 24000000,
444 .set_power = n8x0_mmc_set_power,
445 .set_bus_mode = n8x0_mmc_set_bus_mode,
446 .get_cover_state = n8x0_mmc_get_cover_state,
447 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 |
448 MMC_VDD_32_33 | MMC_VDD_33_34,
452 .set_power = n8x0_mmc_set_power,
453 .set_bus_mode = n8x0_mmc_set_bus_mode,
454 .get_cover_state = n8x0_mmc_get_cover_state,
455 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 |
456 MMC_VDD_21_22 | MMC_VDD_22_23 |
457 MMC_VDD_23_24 | MMC_VDD_24_25 |
458 MMC_VDD_27_28 | MMC_VDD_28_29 |
459 MMC_VDD_29_30 | MMC_VDD_30_31 |
460 MMC_VDD_32_33 | MMC_VDD_33_34,
465 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
467 static struct gpio n810_emmc_gpios[] __initdata = {
468 { N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
469 { N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
472 static void __init n8x0_mmc_init(void)
476 if (board_is_n810()) {
477 mmc1_data.slots[0].name = "external";
480 * Some Samsung Movinand chips do not like open-ended
481 * multi-block reads and fall to braind-dead state
482 * while doing so. Reducing the number of blocks in
483 * the transfer or delays in clock disable do not help
485 mmc1_data.slots[1].name = "internal";
486 mmc1_data.slots[1].ban_openended = 1;
489 err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
494 if (board_is_n810()) {
495 err = gpio_request_array(n810_emmc_gpios,
496 ARRAY_SIZE(n810_emmc_gpios));
498 gpio_free(N8X0_SLOT_SWITCH_GPIO);
503 mmc1_data.nr_slots = 2;
504 mmc_data[0] = &mmc1_data;
507 static struct omap_mmc_platform_data mmc1_data;
508 void __init n8x0_mmc_init(void)
511 #endif /* CONFIG_MMC_OMAP */
513 #ifdef CONFIG_MENELAUS
515 static int n8x0_auto_sleep_regulators(void)
520 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \
521 | EN_VAUX_SLEEP | EN_VIO_SLEEP \
522 | EN_VMEM_SLEEP | EN_DC3_SLEEP \
523 | EN_VC_SLEEP | EN_DC2_SLEEP;
525 ret = menelaus_set_regulator_sleep(1, val);
527 pr_err("Could not set regulators to sleep on menelaus: %u\n",
534 static int n8x0_auto_voltage_scale(void)
538 ret = menelaus_set_vcore_hw(1400, 1050);
540 pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
546 static int n8x0_menelaus_late_init(struct device *dev)
550 ret = n8x0_auto_voltage_scale();
553 ret = n8x0_auto_sleep_regulators();
560 static int n8x0_menelaus_late_init(struct device *dev)
566 struct menelaus_platform_data n8x0_menelaus_platform_data = {
567 .late_init = n8x0_menelaus_late_init,
570 struct aic3x_pdata n810_aic33_data = {
574 static int __init n8x0_late_initcall(void)
584 omap_late_initcall(n8x0_late_initcall);
587 * Legacy init pdata init for n8x0. Note that we want to follow the
588 * I2C bus numbering starting at 0 for device tree like other omaps.
590 void * __init n8x0_legacy_init(void)
592 board_check_revision();
593 spi_register_board_info(n800_spi_board_info,
594 ARRAY_SIZE(n800_spi_board_info));