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
19 #include <linux/spi/spi.h>
21 #include <linux/mmc/host.h>
22 #include <linux/platform_data/spi-omap2-mcspi.h>
23 #include <linux/platform_data/mmc-omap.h>
28 #include <asm/mach-types.h>
31 #include "mmc.h"
33 #include "common-board-devices.h"
57 	else if (of_machine_is_compatible("nokia,n810-wimax"))  in board_check_revision()
82 			i--;  in tusb_set_power()
87 			retval = -ENODEV;  in tusb_set_power()
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.
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
182 static int n8x0_mmc_switch_slot(struct device *dev, int slot)  in n8x0_mmc_switch_slot()  argument
185 	dev_dbg(dev, "Choose slot %d\n", slot + 1);  in n8x0_mmc_switch_slot()
187 	gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);  in n8x0_mmc_switch_slot()
191 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,  in n8x0_mmc_set_power_menelaus()  argument
197 	dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,  in n8x0_mmc_set_power_menelaus()
200 	if (slot == 0) {  in n8x0_mmc_set_power_menelaus()
278 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,  in n8x0_mmc_set_power()  argument
281 	if (board_is_n800() || slot == 0)  in n8x0_mmc_set_power()
282 		return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);  in n8x0_mmc_set_power()
289 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)  in n8x0_mmc_set_bus_mode()  argument
293 	dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,  in n8x0_mmc_set_bus_mode()
294 		bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");  in n8x0_mmc_set_bus_mode()
295 	BUG_ON(slot != 0 && slot != 1);  in n8x0_mmc_set_bus_mode()
296 	slot++;  in n8x0_mmc_set_bus_mode()
299 		r = menelaus_set_mmc_opendrain(slot, 1);  in n8x0_mmc_set_bus_mode()
302 		r = menelaus_set_mmc_opendrain(slot, 0);  in n8x0_mmc_set_bus_mode()
308 		dev_err(dev, "MMC: unable to set bus mode for slot %d\n",  in n8x0_mmc_set_bus_mode()
309 			slot);  in n8x0_mmc_set_bus_mode()
313 static int n8x0_mmc_get_cover_state(struct device *dev, int slot)  in n8x0_mmc_get_cover_state()  argument
315 	slot++;  in n8x0_mmc_get_cover_state()
316 	BUG_ON(slot != 1 && slot != 2);  in n8x0_mmc_get_cover_state()
317 	if (slot == 1)  in n8x0_mmc_get_cover_state()
345 	pr_warn("MMC: notify cover event not available\n");  in n8x0_mmc_callback()
392 	/* All slot pin bits seem to be inversed until first switch change */  in n8x0_mmc_late_init()
432  * MMC controller1 has two slots that are multiplexed via I2C.
433  * MMC controller2 is not in use.
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"  },
480 		 * Some Samsung Movinand chips do not like open-ended  in n8x0_mmc_init()
481 		 * multi-block reads and fall to braind-dead state  in n8x0_mmc_init()
490 			       "MMC slot switch");  in n8x0_mmc_init()
577 		return -ENODEV;  in n8x0_late_initcall()