path: root/arch/arm/mach-ux500/board-mop500-pins.c

/*
 * Copyright (C) ST-Ericsson SA 2010
 *
 * License terms: GNU General Public License (GPL) version 2
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/bug.h>
#include <linux/string.h>
#include <linux/pinctrl/machine.h>

#include <asm/mach-types.h>
#include <plat/pincfg.h>
#include <plat/gpio-nomadik.h>

#include <mach/hardware.h>

#include "pins-db8500.h"
#include "board-mop500.h"

enum custom_pin_cfg_t {
	PINS_FOR_DEFAULT,
	PINS_FOR_U9500,
};

static enum custom_pin_cfg_t pinsfor;

/* These simply sets bias for pins */
#define BIAS(a,b) static unsigned long a[] = { b }

BIAS(pd, PIN_PULL_DOWN);
BIAS(slpm_gpio_nopull, PIN_SLPM_GPIO|PIN_SLPM_INPUT_NOPULL);
BIAS(in_nopull, PIN_INPUT_NOPULL);
BIAS(in_nopull_sleep_nowkup, PIN_INPUT_NOPULL|PIN_SLPM_WAKEUP_DISABLE);
BIAS(in_pu, PIN_INPUT_PULLUP);
BIAS(in_pd, PIN_INPUT_PULLDOWN);
BIAS(in_pd_slpm_in_pu, PIN_INPUT_PULLDOWN|PIN_SLPM_INPUT_PULLUP);
BIAS(in_pu_slpm_out_lo, PIN_INPUT_PULLUP|PIN_SLPM_OUTPUT_LOW);
BIAS(out_hi, PIN_OUTPUT_HIGH);
BIAS(out_lo, PIN_OUTPUT_LOW);
BIAS(out_lo_sleep_nowkup, PIN_OUTPUT_LOW|PIN_SLPM_WAKEUP_DISABLE);
/* These also force them into GPIO mode */
BIAS(gpio_in_pu, PIN_INPUT_PULLUP|PIN_GPIOMODE_ENABLED);
BIAS(gpio_in_pd, PIN_INPUT_PULLDOWN|PIN_GPIOMODE_ENABLED);
BIAS(gpio_in_pu_slpm_gpio_nopull, PIN_INPUT_PULLUP|PIN_GPIOMODE_ENABLED|PIN_SLPM_GPIO|PIN_SLPM_INPUT_NOPULL);
BIAS(gpio_in_pd_slpm_gpio_nopull, PIN_INPUT_PULLDOWN|PIN_GPIOMODE_ENABLED|PIN_SLPM_GPIO|PIN_SLPM_INPUT_NOPULL);
BIAS(gpio_out_hi, PIN_OUTPUT_HIGH|PIN_GPIOMODE_ENABLED);
BIAS(gpio_out_lo, PIN_OUTPUT_LOW|PIN_GPIOMODE_ENABLED);
/* Sleep modes */
BIAS(sleep_in_wkup_pdis, PIN_SLPM_DIR_INPUT|PIN_SLPM_WAKEUP_ENABLE|PIN_SLPM_PDIS_DISABLED);
BIAS(sleep_in_nopull_wkup, PIN_INPUT_NOPULL|PIN_SLPM_WAKEUP_ENABLE);
BIAS(sleep_out_hi_wkup_pdis, PIN_SLPM_OUTPUT_HIGH|PIN_SLPM_WAKEUP_ENABLE|PIN_SLPM_PDIS_DISABLED);
BIAS(sleep_out_lo_wkup, PIN_OUTPUT_LOW|PIN_SLPM_WAKEUP_ENABLE);
BIAS(sleep_out_wkup_pdis, PIN_SLPM_DIR_OUTPUT|PIN_SLPM_WAKEUP_ENABLE|PIN_SLPM_PDIS_DISABLED);

/* We use these to define hog settings that are always done on boot */
#define DB8500_MUX_HOG(group,func) \
	PIN_MAP_MUX_GROUP_HOG_DEFAULT("pinctrl-db8500", group, func)
#define DB8500_PIN_HOG(pin,conf) \
	PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-db8500", pin, conf)

/* These are default states associated with device and changed runtime */
#define DB8500_MUX(group,func,dev) \
	PIN_MAP_MUX_GROUP_DEFAULT(dev, "pinctrl-db8500", group, func)
#define DB8500_PIN(pin,conf,dev) \
	PIN_MAP_CONFIGS_PIN_DEFAULT(dev, "pinctrl-db8500", pin, conf)

#define DB8500_PIN_SLEEP(pin,conf,dev) \
	PIN_MAP_CONFIGS_PIN(dev, PINCTRL_STATE_SLEEP, "pinctrl-db8500",	\
			    pin, conf)

/* Pin control settings */
static struct pinctrl_map __initdata mop500_family_pinmap[] = {
	/*
	 * uMSP0, mux in 4 pins, regular placement of RX/TX
	 * explicitly set the pins to no pull
	 */
	DB8500_MUX_HOG("msp0txrx_a_1", "msp0"),
	DB8500_MUX_HOG("msp0tfstck_a_1", "msp0"),
	DB8500_PIN_HOG("GPIO12_AC4", in_nopull), /* TXD */
	DB8500_PIN_HOG("GPIO15_AC3", in_nopull), /* RXD */
	DB8500_PIN_HOG("GPIO13_AF3", in_nopull), /* TFS */
	DB8500_PIN_HOG("GPIO14_AE3", in_nopull), /* TCK */
	/* MSP2 for HDMI, pull down TXD, TCK, TFS  */
	DB8500_MUX_HOG("msp2_a_1", "msp2"),
	DB8500_PIN_HOG("GPIO193_AH27", in_pd), /* TXD */
	DB8500_PIN_HOG("GPIO194_AF27", in_pd), /* TCK */
	DB8500_PIN_HOG("GPIO195_AG28", in_pd), /* TFS */
	DB8500_PIN_HOG("GPIO196_AG26", out_lo), /* RXD */
	/*
	 * LCD, set TE0 (using LCD VSI0) and D14 (touch screen interrupt) to
	 * pull-up
	 * TODO: is this really correct? Snowball doesn't have a LCD.
	 */
	DB8500_MUX_HOG("lcdvsi0_a_1", "lcd"),
	DB8500_PIN_HOG("GPIO68_E1", in_pu),
	DB8500_PIN_HOG("GPIO84_C2", gpio_in_pu),
	/*
	 * STMPE1601/tc35893 keypad IRQ GPIO 218
	 * TODO: set for snowball and HREF really??
	 */
	DB8500_PIN_HOG("GPIO218_AH11", gpio_in_pu),
	/*
	 * UART0, we do not mux in u0 here.
	 * uart-0 pins gpio configuration should be kept intact to prevent
	 * a glitch in tx line when the tty dev is opened. Later these pins
	 * are configured to uart mop500_pins_uart0
	 */
	DB8500_PIN_HOG("GPIO0_AJ5", in_pu), /* CTS */
	DB8500_PIN_HOG("GPIO1_AJ3", out_hi), /* RTS */
	DB8500_PIN_HOG("GPIO2_AH4", in_pu), /* RXD */
	DB8500_PIN_HOG("GPIO3_AH3", out_hi), /* TXD */
	/*
	 * Mux in UART2 on altfunction C and set pull-ups.
	 * TODO: is this used on U8500 variants and Snowball really?
	 * The setting on GPIO31 conflicts with magnetometer use on hrefv60
	 */
	DB8500_MUX_HOG("u2rxtx_c_1", "u2"),
	DB8500_MUX_HOG("u2ctsrts_c_1", "u2"),
	DB8500_PIN_HOG("GPIO29_W2", in_pu), /* RXD */
	DB8500_PIN_HOG("GPIO30_W3", out_hi), /* TXD */
	DB8500_PIN_HOG("GPIO31_V3", in_pu), /* CTS */
	DB8500_PIN_HOG("GPIO32_V2", out_hi), /* RTS */
	/*
	 * The following pin sets were known as "runtime pins" before being
	 * converted to the pinctrl model. Here we model them as "default"
	 * states.
	 */
	/* Mux in UART0 after initialization */
	DB8500_MUX("u0_a_1", "u0", "uart0"),
	DB8500_PIN("GPIO0_AJ5", in_pu, "uart0"), /* CTS */
	DB8500_PIN("GPIO1_AJ3", out_hi, "uart0"), /* RTS */
	DB8500_PIN("GPIO2_AH4", in_pu, "uart0"), /* RXD */
	DB8500_PIN("GPIO3_AH3", out_hi, "uart0"), /* TXD */
	/* UART0 sleep state */
	DB8500_PIN_SLEEP("GPIO0_AJ5", sleep_in_wkup_pdis, "uart0"),
	DB8500_PIN_SLEEP("GPIO1_AJ3", sleep_out_hi_wkup_pdis, "uart0"),
	DB8500_PIN_SLEEP("GPIO2_AH4", sleep_in_wkup_pdis, "uart0"),
	DB8500_PIN_SLEEP("GPIO3_AH3", sleep_out_wkup_pdis, "uart0"),
	/* MSP1 for ALSA codec */
	DB8500_MUX("msp1txrx_a_1", "msp1", "ux500-msp-i2s.1"),
	DB8500_MUX("msp1_a_1", "msp1", "ux500-msp-i2s.1"),
	DB8500_PIN("GPIO33_AF2", out_lo_sleep_nowkup, "ux500-msp-i2s.1"),
	DB8500_PIN("GPIO34_AE1", in_nopull_sleep_nowkup, "ux500-msp-i2s.1"),
	DB8500_PIN("GPIO35_AE2", in_nopull_sleep_nowkup, "ux500-msp-i2s.1"),
	DB8500_PIN("GPIO36_AG2", in_nopull_sleep_nowkup, "ux500-msp-i2s.1"),
	/* MSP1 sleep state */
	DB8500_PIN_SLEEP("GPIO33_AF2", sleep_out_lo_wkup, "ux500-msp-i2s.1"),
	DB8500_PIN_SLEEP("GPIO34_AE1", sleep_in_nopull_wkup, "ux500-msp-i2s.1"),
	DB8500_PIN_SLEEP("GPIO35_AE2", sleep_in_nopull_wkup, "ux500-msp-i2s.1"),
	DB8500_PIN_SLEEP("GPIO36_AG2", sleep_in_nopull_wkup, "ux500-msp-i2s.1"),
	/* Mux in LCD data lines 8 thru 11 and LCDA CLK for MCDE TVOUT */
	DB8500_MUX("lcd_d8_d11_a_1", "lcd", "mcde-tvout"),
	DB8500_MUX("lcdaclk_b_1", "lcda", "mcde-tvout"),
	/* Mux in LCD VSI1 and pull it up for MCDE HDMI output */
	DB8500_MUX("lcdvsi1_a_1", "lcd", "av8100-hdmi"),
	/* Mux in I2C blocks, put pins into GPIO in sleepmode no pull-up */
	DB8500_MUX("i2c0_a_1", "i2c0", "nmk-i2c.0"),
	DB8500_PIN("GPIO147_C15", slpm_gpio_nopull, "nmk-i2c.0"),
	DB8500_PIN("GPIO148_B16", slpm_gpio_nopull, "nmk-i2c.0"),
	DB8500_MUX("i2c1_b_2", "i2c1", "nmk-i2c.1"),
	DB8500_PIN("GPIO16_AD3", slpm_gpio_nopull, "nmk-i2c.1"),
	DB8500_PIN("GPIO17_AD4", slpm_gpio_nopull, "nmk-i2c.1"),
	DB8500_MUX("i2c2_b_2", "i2c2", "nmk-i2c.2"),
	DB8500_PIN("GPIO10_AF5", slpm_gpio_nopull, "nmk-i2c.2"),
	DB8500_PIN("GPIO11_AG4", slpm_gpio_nopull, "nmk-i2c.2"),
	DB8500_MUX("i2c3_c_2", "i2c3", "nmk-i2c.3"),
	DB8500_PIN("GPIO229_AG7", slpm_gpio_nopull, "nmk-i2c.3"),
	DB8500_PIN("GPIO230_AF7", slpm_gpio_nopull, "nmk-i2c.3"),
	/* Mux in SDI0 (here called MC0) used for removable MMC/SD/SDIO cards */
	DB8500_MUX("mc0_a_1", "mc0", "sdi0"),
	DB8500_PIN("GPIO18_AC2", out_hi, "sdi0"), /* CMDDIR */
	DB8500_PIN("GPIO19_AC1", out_hi, "sdi0"), /* DAT0DIR */
	DB8500_PIN("GPIO20_AB4", out_hi, "sdi0"), /* DAT2DIR */
	DB8500_PIN("GPIO22_AA3", in_nopull, "sdi0"), /* FBCLK */
	DB8500_PIN("GPIO23_AA4", out_lo, "sdi0"), /* CLK */
	DB8500_PIN("GPIO24_AB2", in_pu, "sdi0"), /* CMD */
	DB8500_PIN("GPIO25_Y4", in_pu, "sdi0"), /* DAT0 */
	DB8500_PIN("GPIO26_Y2", in_pu, "sdi0"), /* DAT1 */
	DB8500_PIN("GPIO27_AA2", in_pu, "sdi0"), /* DAT2 */
	DB8500_PIN("GPIO28_AA1", in_pu, "sdi0"), /* DAT3 */
	/* Mux in SDI1 (here called MC1) used for SDIO for CW1200 WLAN */
	DB8500_MUX("mc1_a_1", "mc1", "sdi1"),
	DB8500_PIN("GPIO208_AH16", out_lo, "sdi1"), /* CLK */
	DB8500_PIN("GPIO209_AG15", in_nopull, "sdi1"), /* FBCLK */
	DB8500_PIN("GPIO210_AJ15", in_pu, "sdi1"), /* CMD */
	DB8500_PIN("GPIO211_AG14", in_pu, "sdi1"), /* DAT0 */
	DB8500_PIN("GPIO212_AF13", in_pu, "sdi1"), /* DAT1 */
	DB8500_PIN("GPIO213_AG13", in_pu, "sdi1"), /* DAT2 */
	DB8500_PIN("GPIO214_AH15", in_pu, "sdi1"), /* DAT3 */
	/* Mux in SDI2 (here called MC2) used for for PoP eMMC */
	DB8500_MUX("mc2_a_1", "mc2", "sdi2"),
	DB8500_PIN("GPIO128_A5", out_lo, "sdi2"), /* CLK */
	DB8500_PIN("GPIO129_B4", in_pu, "sdi2"), /* CMD */
	DB8500_PIN("GPIO130_C8", in_nopull, "sdi2"), /* FBCLK */
	DB8500_PIN("GPIO131_A12"