1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-omap2/board-n8x0.c
5 * Copyright (C) 2005-2009 Nokia Corporation
6 * Author: Juha Yrjola <juha.yrjola@nokia.com>
8 * Modified from mach-omap2/board-generic.c
11 #include <linux/clk.h>
12 #include <linux/delay.h>
13 #include <linux/gpio/machine.h>
14 #include <linux/gpio/consumer.h>
15 #include <linux/init.h>
17 #include <linux/irq.h>
18 #include <linux/stddef.h>
19 #include <linux/i2c.h>
20 #include <linux/spi/spi.h>
21 #include <linux/usb/musb.h>
22 #include <linux/mmc/host.h>
23 #include <linux/platform_data/spi-omap2-mcspi.h>
24 #include <linux/platform_data/mmc-omap.h>
25 #include <linux/mfd/menelaus.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach-types.h>
32 #include "usb-tusb6010.h"
34 #include "common-board-devices.h"
36 #define TUSB6010_ASYNC_CS 1
37 #define TUSB6010_SYNC_CS 4
38 #define TUSB6010_DMACHAN 0x3f
40 #define NOKIA_N810_WIMAX (1 << 2)
41 #define NOKIA_N810 (1 << 1)
42 #define NOKIA_N800 (1 << 0)
44 static u32 board_caps;
46 #define board_is_n800() (board_caps & NOKIA_N800)
47 #define board_is_n810() (board_caps & NOKIA_N810)
48 #define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX)
50 static void board_check_revision(void)
52 if (of_machine_is_compatible("nokia,n800"))
53 board_caps = NOKIA_N800;
54 else if (of_machine_is_compatible("nokia,n810"))
55 board_caps = NOKIA_N810;
56 else if (of_machine_is_compatible("nokia,n810-wimax"))
57 board_caps = NOKIA_N810_WIMAX;
60 pr_err("Unknown board\n");
63 #if IS_ENABLED(CONFIG_USB_MUSB_TUSB6010)
65 static struct musb_hdrc_config musb_config = {
72 static struct musb_hdrc_platform_data tusb_data = {
74 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
75 .power = 100, /* Max 100 mA VBUS for host mode */
76 .config = &musb_config,
79 static struct gpiod_lookup_table tusb_gpio_table = {
80 .dev_id = "musb-tusb",
82 GPIO_LOOKUP("gpio-0-15", 0, "enable",
84 GPIO_LOOKUP("gpio-48-63", 10, "int",
90 static void __init n8x0_usb_init(void)
94 gpiod_add_lookup_table(&tusb_gpio_table);
95 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
96 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
101 pr_info("TUSB 6010\n");
107 static void __init n8x0_usb_init(void) {}
109 #endif /*CONFIG_USB_MUSB_TUSB6010 */
112 static struct omap2_mcspi_device_config p54spi_mcspi_config = {
116 static struct spi_board_info n800_spi_board_info[] __initdata = {
118 .modalias = "p54spi",
121 .max_speed_hz = 48000000,
122 .controller_data = &p54spi_mcspi_config,
126 #if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP)
129 * On both N800 and N810, only the first of the two MMC controllers is in use.
130 * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
131 * On N800, both slots are powered via Menelaus. On N810, only one of the
132 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
134 * VMMC slot 1 on both N800 and N810
135 * VDCDC3_APE and VMCS2_APE slot 2 on N800
136 * GPIO23 and GPIO9 slot 2 EMMC on N810
139 static int slot1_cover_open;
140 static int slot2_cover_open;
141 static struct device *mmc_device;
143 static struct gpiod_lookup_table nokia8xx_mmc_gpio_table = {
144 .dev_id = "mmci-omap.0",
146 /* Slot switch, GPIO 96 */
147 GPIO_LOOKUP("gpio-80-111", 16,
148 "switch", GPIO_ACTIVE_HIGH),
153 static struct gpiod_lookup_table nokia810_mmc_gpio_table = {
154 .dev_id = "mmci-omap.0",
156 /* Slot index 1, VSD power, GPIO 23 */
157 GPIO_LOOKUP_IDX("gpio-16-31", 7,
158 "vsd", 1, GPIO_ACTIVE_HIGH),
159 /* Slot index 1, VIO power, GPIO 9 */
160 GPIO_LOOKUP_IDX("gpio-0-15", 9,
161 "vio", 1, GPIO_ACTIVE_HIGH),
166 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
167 int power_on, int vdd)
171 #ifdef CONFIG_MMC_DEBUG
172 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
173 power_on ? "on" : "off", vdd);
177 return menelaus_set_vmmc(0);
190 case MMC_VDD_165_195:
196 return menelaus_set_vmmc(mV);
199 return menelaus_set_vdcdc(3, 0);
224 case MMC_VDD_165_195:
230 return menelaus_set_vdcdc(3, mV);
235 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
238 if (board_is_n800() || slot == 0)
239 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
241 /* The n810 power will be handled by GPIO code in the driver */
246 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
250 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
251 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
252 BUG_ON(slot != 0 && slot != 1);
255 case MMC_BUSMODE_OPENDRAIN:
256 r = menelaus_set_mmc_opendrain(slot, 1);
258 case MMC_BUSMODE_PUSHPULL:
259 r = menelaus_set_mmc_opendrain(slot, 0);
264 if (r != 0 && printk_ratelimit())
265 dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
270 static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
273 BUG_ON(slot != 1 && slot != 2);
275 return slot1_cover_open;
277 return slot2_cover_open;
280 static void n8x0_mmc_callback(void *data, u8 card_mask)
282 #ifdef CONFIG_MMC_OMAP
283 int bit, *openp, index;
285 if (board_is_n800()) {
287 openp = &slot2_cover_open;
291 openp = &slot1_cover_open;
300 omap_mmc_notify_cover_event(mmc_device, index, *openp);
302 pr_warn("MMC: notify cover event not available\n");
306 static int n8x0_mmc_late_init(struct device *dev)
313 r = menelaus_set_slot_sel(1);
322 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
326 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
327 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
329 r = menelaus_set_mmc_slot(1, 1, 0, 1);
332 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
336 r = menelaus_get_slot_pin_states();
340 if (board_is_n800()) {
342 openp = &slot2_cover_open;
345 openp = &slot1_cover_open;
346 slot2_cover_open = 0;
349 /* All slot pin bits seem to be inversed until first switch change */
350 if (r == 0xf || r == (0xf & ~bit))
358 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
363 static void n8x0_mmc_shutdown(struct device *dev)
372 menelaus_set_mmc_slot(1, 0, 0, 0);
373 menelaus_set_mmc_slot(2, 0, vs2sel, 0);
376 static void n8x0_mmc_cleanup(struct device *dev)
378 menelaus_unregister_mmc_callback();
382 * MMC controller1 has two slots that are multiplexed via I2C.
383 * MMC controller2 is not in use.
385 static struct omap_mmc_platform_data mmc1_data = {
387 .init = n8x0_mmc_late_init,
388 .cleanup = n8x0_mmc_cleanup,
389 .shutdown = n8x0_mmc_shutdown,
390 .max_freq = 24000000,
393 .set_power = n8x0_mmc_set_power,
394 .set_bus_mode = n8x0_mmc_set_bus_mode,
395 .get_cover_state = n8x0_mmc_get_cover_state,
396 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 |
397 MMC_VDD_32_33 | MMC_VDD_33_34,
401 .set_power = n8x0_mmc_set_power,
402 .set_bus_mode = n8x0_mmc_set_bus_mode,
403 .get_cover_state = n8x0_mmc_get_cover_state,
404 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 |
405 MMC_VDD_21_22 | MMC_VDD_22_23 |
406 MMC_VDD_23_24 | MMC_VDD_24_25 |
407 MMC_VDD_27_28 | MMC_VDD_28_29 |
408 MMC_VDD_29_30 | MMC_VDD_30_31 |
409 MMC_VDD_32_33 | MMC_VDD_33_34,
414 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
416 static void __init n8x0_mmc_init(void)
418 gpiod_add_lookup_table(&nokia8xx_mmc_gpio_table);
420 if (board_is_n810()) {
421 mmc1_data.slots[0].name = "external";
424 * Some Samsung Movinand chips do not like open-ended
425 * multi-block reads and fall to braind-dead state
426 * while doing so. Reducing the number of blocks in
427 * the transfer or delays in clock disable do not help
429 mmc1_data.slots[1].name = "internal";
430 mmc1_data.slots[1].ban_openended = 1;
431 gpiod_add_lookup_table(&nokia810_mmc_gpio_table);
434 mmc1_data.nr_slots = 2;
435 mmc_data[0] = &mmc1_data;
438 static struct omap_mmc_platform_data mmc1_data;
439 static void __init n8x0_mmc_init(void)
442 #endif /* CONFIG_MMC_OMAP */
444 #ifdef CONFIG_MENELAUS
446 static int n8x0_auto_sleep_regulators(void)
451 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \
452 | EN_VAUX_SLEEP | EN_VIO_SLEEP \
453 | EN_VMEM_SLEEP | EN_DC3_SLEEP \
454 | EN_VC_SLEEP | EN_DC2_SLEEP;
456 ret = menelaus_set_regulator_sleep(1, val);
458 pr_err("Could not set regulators to sleep on menelaus: %u\n",
465 static int n8x0_auto_voltage_scale(void)
469 ret = menelaus_set_vcore_hw(1400, 1050);
471 pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
477 static int n8x0_menelaus_late_init(struct device *dev)
481 ret = n8x0_auto_voltage_scale();
484 ret = n8x0_auto_sleep_regulators();
491 static int n8x0_menelaus_late_init(struct device *dev)
497 struct menelaus_platform_data n8x0_menelaus_platform_data = {
498 .late_init = n8x0_menelaus_late_init,
501 static struct gpiod_lookup_table nokia810_asoc_gpio_table = {
502 .dev_id = "soc-audio",
504 GPIO_LOOKUP("gpio-0-15", 10, "headset", GPIO_ACTIVE_HIGH),
505 GPIO_LOOKUP("gpio-80-111", 21, "speaker", GPIO_ACTIVE_HIGH),
510 static int __init n8x0_late_initcall(void)
517 gpiod_add_lookup_table(&nokia810_asoc_gpio_table);
521 omap_late_initcall(n8x0_late_initcall);
524 * Legacy init pdata init for n8x0. Note that we want to follow the
525 * I2C bus numbering starting at 0 for device tree like other omaps.
527 void * __init n8x0_legacy_init(void)
529 board_check_revision();
530 spi_register_board_info(n800_spi_board_info,
531 ARRAY_SIZE(n800_spi_board_info));