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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 <asm/arch/control.h>
#include <asm/arch/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%08x): 0x%02x -> 0x%02x\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

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