mux.c

/*
 * linux/arch/arm/mach-omap2/mux.c
 *
 * OMAP2 pin multiplexing configurations
 *
 * Copyright (C) 2004 - 2008 Texas Instruments Inc.
 * Copyright (C) 2003 - 2008 Nokia Corporation
 *
 * Written by Tony Lindgren
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
#include <linux/module.h>
#include <linux/init.h>
#include <asm/system.h>
#include <asm/io.h>
#include <linux/spinlock.h>

#include <mach/control.h>
#include <mach/mux.h>

#ifdef CONFIG_OMAP_MUX

static struct omap_mux_cfg arch_mux_cfg;

/* NOTE: See mux.h for the enumeration */

#ifdef CONFIG_ARCH_OMAP24XX
static struct pin_config __initdata_or_module omap24xx_pins[] = {
/*
 *	description			mux	mux	pull	pull	debug
 *					offset	mode	ena	type
 */

/* 24xx I2C */
MUX_CFG_24XX("M19_24XX_I2C1_SCL",	0x111,	0,	0,	0,	1)
MUX_CFG_24XX("L15_24XX_I2C1_SDA",	0x112,	0,	0,	0,	1)
MUX_CFG_24XX("J15_24XX_I2C2_SCL",	0x113,	0,	0,	1,	1)
MUX_CFG_24XX("H19_24XX_I2C2_SDA",	0x114,	0,	0,	0,	1)

/* Menelaus interrupt */
MUX_CFG_24XX("W19_24XX_SYS_NIRQ",	0x12c,	0,	1,	1,	1)

/* 24xx clocks */
MUX_CFG_24XX("W14_24XX_SYS_CLKOUT",	0x137,	0,	1,	1,	1)

/* 24xx GPMC chipselects, wait pin monitoring */
MUX_CFG_24XX("E2_GPMC_NCS2",		0x08e,	0,	1,	1,	1)
MUX_CFG_24XX("L2_GPMC_NCS7",		0x093,	0,	1,	1,	1)
MUX_CFG_24XX("L3_GPMC_WAIT0",		0x09a,	0,	1,	1,	1)
MUX_CFG_24XX("N7_GPMC_WAIT1",		0x09b,	0,	1,	1,	1)
MUX_CFG_24XX("M1_GPMC_WAIT2",		0x09c,	0,	1,	1,	1)
MUX_CFG_24XX("P1_GPMC_WAIT3",		0x09d,	0,	1,	1,	1)

/* 24xx McBSP */
MUX_CFG_24XX("Y15_24XX_MCBSP2_CLKX",	0x124,	1,	1,	0,	1)
MUX_CFG_24XX("R14_24XX_MCBSP2_FSX",	0x125,	1,	1,	0,	1)
MUX_CFG_24XX("W15_24XX_MCBSP2_DR",	0x126,	1,	1,	0,	1)
MUX_CFG_24XX("V15_24XX_MCBSP2_DX",	0x127,	1,	1,	0,	1)

/* 24xx GPIO */
MUX_CFG_24XX("M21_242X_GPIO11",		0x0c9,	3,	1,	1,	1)
MUX_CFG_24XX("P21_242X_GPIO12",		0x0ca,	3,	0,	0,	1)
MUX_CFG_24XX("AA10_242X_GPIO13",	0x0e5,	3,	0,	0,	1)
MUX_CFG_24XX("AA6_242X_GPIO14",		0x0e6,	3,	0,	0,	1)
MUX_CFG_24XX("AA4_242X_GPIO15",		0x0e7,	3,	0,	0,	1)
MUX_CFG_24XX("Y11_242X_GPIO16",		0x0e8,	3,	0,	0,	1)
MUX_CFG_24XX("AA12_242X_GPIO17",	0x0e9,	3,	0,	0,	1)
MUX_CFG_24XX("AA8_242X_GPIO58",		0x0ea,	3,	0,	0,	1)
MUX_CFG_24XX("Y20_24XX_GPIO60",		0x12c,	3,	0,	0,	1)
MUX_CFG_24XX("W4__24XX_GPIO74",		0x0f2,	3,	0,	0,	1)
MUX_CFG_24XX("N15_24XX_GPIO85",		0x103,	3,	0,	0,	1)
MUX_CFG_24XX("M15_24XX_GPIO92",		0x10a,	3,	0,	0,	1)
MUX_CFG_24XX("P20_24XX_GPIO93",		0x10b,	3,	0,	0,	1)
MUX_CFG_24XX("P18_24XX_GPIO95",		0x10d,	3,	0,	0,	1)
MUX_CFG_24XX("M18_24XX_GPIO96",		0x10e,	3,	0,	0,	1)
MUX_CFG_24XX("L14_24XX_GPIO97",		0x10f,	3,	0,	0,	1)
MUX_CFG_24XX("J15_24XX_GPIO99",		0x113,	3,	1,	1,	1)
MUX_CFG_24XX("V14_24XX_GPIO117",	0x128,	3,	1,	0,	1)
MUX_CFG_24XX("P14_24XX_GPIO125",	0x140,	3,	1,	1,	1)

/* 242x DBG GPIO */
MUX_CFG_24XX("V4_242X_GPIO49",		0xd3,	3,	0,	0,	1)
MUX_CFG_24XX("W2_242X_GPIO50",		0xd4,	3,	0,	0,	1)
MUX_CFG_24XX("U4_242X_GPIO51",		0xd5,	3,	0,	0,	1)
MUX_CFG_24XX("V3_242X_GPIO52",		0xd6,	3,	0,	0,	1)
MUX_CFG_24XX("V2_242X_GPIO53",		0xd7,	3,	0,	0,	1)
MUX_CFG_24XX("V6_242X_GPIO53",		0xcf,	3,	0,	0,	1)
MUX_CFG_24XX("T4_242X_GPIO54",		0xd8,	3,	0,	0,	1)
MUX_CFG_24XX("Y4_242X_GPIO54",		0xd0,	3,	0,	0,	1)
MUX_CFG_24XX("T3_242X_GPIO55",		0xd9,	3,	0,	0,	1)
MUX_CFG_24XX("U2_242X_GPIO56",		0xda,	3,	0,	0,	1)

/* 24xx external DMA requests */
MUX_CFG_24XX("AA10_242X_DMAREQ0",	0x0e5,	2,	0,	0,	1)
MUX_CFG_24XX("AA6_242X_DMAREQ1",	0x0e6,	2,	0,	0,	1)
MUX_CFG_24XX("E4_242X_DMAREQ2",		0x074,	2,	0,	0,	1)
MUX_CFG_24XX("G4_242X_DMAREQ3",		0x073,	2,	0,	0,	1)
MUX_CFG_24XX("D3_242X_DMAREQ4",		0x072,	2,	0,	0,	1)
MUX_CFG_24XX("E3_242X_DMAREQ5",		0x071,	2,	0,	0,	1)

/* UART3 */
MUX_CFG_24XX("K15_24XX_UART3_TX",	0x118,	0,	0,	0,	1)
MUX_CFG_24XX("K14_24XX_UART3_RX",	0x119,	0,	0,	0,	1)

/* MMC/SDIO */
MUX_CFG_24XX("G19_24XX_MMC_CLKO",	0x0f3,	0,	0,	0,	1)
MUX_CFG_24XX("H18_24XX_MMC_CMD",	0x0f4,	0,	0,	0,	1)
MUX_CFG_24XX("F20_24XX_MMC_DAT0",	0x0f5,	0,	0,	0,	1)
MUX_CFG_24XX("H14_24XX_MMC_DAT1",	0x0f6,	0,	0,	0,	1)
MUX_CFG_24XX("E19_24XX_MMC_DAT2",	0x0f7,	0,	0,	0,	1)
MUX_CFG_24XX("D19_24XX_MMC_DAT3",	0x0f8,	0,	0,	0,	1)
MUX_CFG_24XX("F19_24XX_MMC_DAT_DIR0",	0x0f9,	0,	0,	0,	1)
MUX_CFG_24XX("E20_24XX_MMC_DAT_DIR1",	0x0fa,	0,	0,	0,	1)
MUX_CFG_24XX("F18_24XX_MMC_DAT_DIR2",	0x0fb,	0,	0,	0,	1)
MUX_CFG_24XX("E18_24XX_MMC_DAT_DIR3",	0x0fc,	0,	0,	0,	1)
MUX_CFG_24XX("G18_24XX_MMC_CMD_DIR",	0x0fd,	0,	0,	0,	1)
MUX_CFG_24XX("H15_24XX_MMC_CLKI",	0x0fe,	0,	0,	0,	1)

/* Full speed USB */
MUX_CFG_24XX("J20_24XX_USB0_PUEN",	0x11d,	0,	0,	0,	1)
MUX_CFG_24XX("J19_24XX_USB0_VP",	0x11e,	0,	0,	0,	1)
MUX_CFG_24XX("K20_24XX_USB0_VM",	0x11f,	0,	0,	0,	1)
MUX_CFG_24XX("J18_24XX_USB0_RCV",	0x120,	0,	0,	0,	1)
MUX_CFG_24XX("K19_24XX_USB0_TXEN",	0x121,	0,	0,	0,	1)
MUX_CFG_24XX("J14_24XX_USB0_SE0",	0x122,	0,	0,	0,	1)
MUX_CFG_24XX("K18_24XX_USB0_DAT",	0x123,	0,	0,	0,	1)

MUX_CFG_24XX("N14_24XX_USB1_SE0",	0x0ed,	2,	0,	0,	1)
MUX_CFG_24XX("W12_24XX_USB1_SE0",	0x0dd,	3,	0,	0,	1)
MUX_CFG_24XX("P15_24XX_USB1_DAT",	0x0ee,	2,	0,	0,	1)
MUX_CFG_24XX("R13_24XX_USB1_DAT",	0x0e0,	3,	0,	0,	1)
MUX_CFG_24XX("W20_24XX_USB1_TXEN",	0x0ec,	2,	0,	0,	1)
MUX_CFG_24XX("P13_24XX_USB1_TXEN",	0x0df,	3,	0,	0,	1)
MUX_CFG_24XX("V19_24XX_USB1_RCV",	0x0eb,	2,	0,	0,	1)
MUX_CFG_24XX("V12_24XX_USB1_RCV",	0x0de,	3,	0,	0,	1)

MUX_CFG_24XX("AA10_24XX_USB2_SE0",	0x0e5,	2,	0,	0,	1)
MUX_CFG_24XX("Y11_24XX_USB2_DAT",	0x0e8,	2,	0,	0,	1)
MUX_CFG_24XX("AA12_24XX_USB2_TXEN",	0x0e9,	2,	0,	0,	1)
MUX_CFG_24XX("AA6_24XX_USB2_RCV",	0x0e6,	2,	0,	0,	1)
MUX_CFG_24XX("AA4_24XX_USB2_TLLSE0",	0x0e7,	2,	0,	0,	1)

/* Keypad GPIO*/
MUX_CFG_24XX("T19_24XX_KBR0",		0x106,	3,	1,	1,	1)
MUX_CFG_24XX("R19_24XX_KBR1",		0x107,	3,	1,	1,	1)
MUX_CFG_24XX("V18_24XX_KBR2",		0x139,	3,	1,	1,	1)
MUX_CFG_24XX("M21_24XX_KBR3",		0xc9,	3,	1,	1,	1)
MUX_CFG_24XX("E5__24XX_KBR4",		0x138,	3,	1,	1,	1)
MUX_CFG_24XX("M18_24XX_KBR5",		0x10e,	3,	1,	1,	1)
MUX_CFG_24XX("R20_24XX_KBC0",		0x108,	3,	0,	0,	1)
MUX_CFG_24XX("M14_24XX_KBC1",		0x109,	3,	0,	0,	1)
MUX_CFG_24XX("H19_24XX_KBC2",		0x114,	3,	0,	0,	1)
MUX_CFG_24XX("V17_24XX_KBC3",		0x135,	3,	0,	0,	1)
MUX_CFG_24XX("P21_24XX_KBC4",		0xca,	3,	0,	0,	1)
MUX_CFG_24XX("L14_24XX_KBC5",		0x10f,	3,	0,	0,	1)
MUX_CFG_24XX("N19_24XX_KBC6",		0x110,	3,	0,	0,	1)

/* 24xx Menelaus Keypad GPIO */
MUX_CFG_24XX("B3__24XX_KBR5",		0x30,	3,	1,	1,	1)
MUX_CFG_24XX("AA4_24XX_KBC2",		0xe7,	3,	0,	0,	1)
MUX_CFG_24XX("B13_24XX_KBC6",		0x110,	3,	0,	0,	1)

/* 2430 USB */
MUX_CFG_24XX("AD9_2430_USB0_PUEN",	0x133,	4,	0,	0,	1)
MUX_CFG_24XX("Y11_2430_USB0_VP",	0x134,	4,	0,	0,	1)
MUX_CFG_24XX("AD7_2430_USB0_VM",	0x135,	4,	0,	0,	1)
MUX_CFG_24XX("AE7_2430_USB0_RCV",	0x136,	4,	0,	0,	1)
MUX_CFG_24XX("AD4_2430_USB0_TXEN",	0x137,	4,	0,	0,	1)
MUX_CFG_24XX("AF9_2430_USB0_SE0",	0x138,	4,	0,	0,	1)
MUX_CFG_24XX("AE6_2430_USB0_DAT",	0x139,	4,	0,	0,	1)
MUX_CFG_24XX("AD24_2430_USB1_SE0",	0x107,	2,	0,	0,	1)
MUX_CFG_24XX("AB24_2430_USB1_RCV",	0x108,	2,	0,	0,	1)
MUX_CFG_24XX("Y25_2430_USB1_TXEN",	0x109,	2,	0,	0,	1)
MUX_CFG_24XX("AA26_2430_USB1_DAT",	0x10A,	2,	0,	0,	1)

/* 2430 HS-USB */
MUX_CFG_24XX("AD9_2430_USB0HS_DATA3",	0x133,	0,	0,	0,	1)
MUX_CFG_24XX("Y11_2430_USB0HS_DATA4",	0x134,	0,	0,	0,	1)
MUX_CFG_24XX("AD7_2430_USB0HS_DATA5",	0x135,	0,	0,	0,	1)
MUX_CFG_24XX("AE7_2430_USB0HS_DATA6",	0x136,	0,	0,	0,	1)
MUX_CFG_24XX("AD4_2430_USB0HS_DATA2",	0x137,	0,	0,	0,	1)
MUX_CFG_24XX("AF9_2430_USB0HS_DATA0",	0x138,	0,	0,	0,	1)
MUX_CFG_24XX("AE6_2430_USB0HS_DATA1",	0x139,	0,	0,	0,	1)
MUX_CFG_24XX("AE8_2430_USB0HS_CLK",	0x13A,	0,	0,	0,	1)
MUX_CFG_24XX("AD8_2430_USB0HS_DIR",	0x13B,	0,	0,	0,	1)
MUX_CFG_24XX("AE5_2430_USB0HS_STP",	0x13c,	0,	1,	1,	1)
MUX_CFG_24XX("AE9_2430_USB0HS_NXT",	0x13D,	0,	0,	0,	1)
MUX_CFG_24XX("AC7_2430_USB0HS_DATA7",	0x13E,	0,	0,	0,	1)

/* 2430 McBSP */
MUX_CFG_24XX("AC10_2430_MCBSP2_FSX",	0x012E,	1,	0,	0,	1)
MUX_CFG_24XX("AD16_2430_MCBSP2_CLX",	0x012F,	1,	0,	0,	1)
MUX_CFG_24XX("AE13_2430_MCBSP2_DX",	0x0130,	1,	0,	0,	1)
MUX_CFG_24XX("AD13_2430_MCBSP2_DR",	0x0131,	1,	0,	0,	1)
MUX_CFG_24XX("AC10_2430_MCBSP2_FSX_OFF",0x012E,	0,	0,	0,	1)
MUX_CFG_24XX("AD16_2430_MCBSP2_CLX_OFF",0x012F,	0,	0,	0,	1)
MUX_CFG_24XX("AE13_2430_MCBSP2_DX_OFF",	0x0130,	0,	0,	0,	1)
MUX_CFG_24XX("AD13_2430_MCBSP2_DR_OFF",	0x0131,	0,	0,	0,	1)
};

#define OMAP24XX_PINS_SZ	ARRAY_SIZE(omap24xx_pins)

#else
#define omap24xx_pins		NULL
#define OMAP24XX_PINS_SZ	0
#endif	/* CONFIG_ARCH_OMAP24XX */

#define OMAP24XX_PULL_ENA	(1 << 3)
#define OMAP24XX_PULL_UP	(1 << 4)

#if defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS)
void __init_or_module omap2_cfg_debug(const struct pin_config *cfg, u8 reg)
{
	u16 orig;
	u8 warn = 0, debug = 0;

	orig = omap_ctrl_readb(cfg->mux_reg);

#ifdef	CONFIG_OMAP_MUX_DEBUG
	debug = cfg->debug;
#endif
	warn = (orig != reg);
	if (debug || warn)
		printk(KERN_WARNING
			"MUX: setup %s (0x%p): 0x%04x -> 0x%04x\n",
			cfg->name, omap_ctrl_base_get() + cfg->mux_reg,
			orig, reg);
}
#else
#define omap2_cfg_debug(x, y)	do {} while (0)
#endif

#ifdef CONFIG_ARCH_OMAP24XX
int __init_or_module omap24xx_cfg_reg(const struct pin_config *cfg)
{
	static DEFINE_SPINLOCK(mux_spin_lock);
	unsigned long flags;
	u8 reg = 0;

	spin_lock_irqsave(&mux_spin_lock, flags);
	reg |= cfg->mask & 0x7;
	if (cfg->pull_val)
		reg |= OMAP24XX_PULL_ENA;
	if (cfg->pu_pd_val)
		reg |= OMAP24XX_PULL_UP;
	omap2_cfg_debug(cfg, reg);
	omap_ctrl_writeb(reg, cfg->mux_reg);
	spin_unlock_irqrestore(&mux_spin_lock, flags);

	return 0;
}
#else
#define omap24xx_cfg_reg	0
#endif

int __init omap2_mux_init(void)
{
	if (cpu_is_omap24xx()) {
		arch_mux_cfg.pins	= omap24xx_pins;
		arch_mux_cfg.size	= OMAP24XX_PINS_SZ;
		arch_mux_cfg.cfg_reg	= omap24xx_cfg_reg;
	}

	return omap_mux_register(&arch_mux_cfg);
}

#endif