1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * linux/arch/arm/mach-omap1/mux.c 4 * 5 * OMAP1 pin multiplexing configurations 6 * 7 * Copyright (C) 2003 - 2008 Nokia Corporation 8 * 9 * Written by Tony Lindgren 10 */ 11#include <linux/module.h> 12#include <linux/init.h> 13#include <linux/io.h> 14#include <linux/spinlock.h> 15#include <linux/soc/ti/omap1-io.h> 16 17#include "hardware.h" 18#include "mux.h" 19 20#ifdef CONFIG_OMAP_MUX 21 22static struct omap_mux_cfg arch_mux_cfg; 23 24#if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) 25static struct pin_config omap1xxx_pins[] = { 26/* 27 * description mux mode mux pull pull pull pu_pd pu dbg 28 * reg offset mode reg bit ena reg 29 */ 30MUX_CFG("UART1_TX", 9, 21, 1, 2, 3, 0, NA, 0, 0) 31MUX_CFG("UART1_RTS", 9, 12, 1, 2, 0, 0, NA, 0, 0) 32 33/* UART2 (COM_UART_GATING), conflicts with USB2 */ 34MUX_CFG("UART2_TX", C, 27, 1, 3, 3, 0, NA, 0, 0) 35MUX_CFG("UART2_RX", C, 18, 0, 3, 1, 1, NA, 0, 0) 36MUX_CFG("UART2_CTS", C, 21, 0, 3, 1, 1, NA, 0, 0) 37MUX_CFG("UART2_RTS", C, 24, 1, 3, 2, 0, NA, 0, 0) 38 39/* UART3 (GIGA_UART_GATING) */ 40MUX_CFG("UART3_TX", 6, 0, 1, 0, 30, 0, NA, 0, 0) 41MUX_CFG("UART3_RX", 6, 3, 0, 0, 31, 1, NA, 0, 0) 42MUX_CFG("UART3_CTS", 5, 12, 2, 0, 24, 0, NA, 0, 0) 43MUX_CFG("UART3_RTS", 5, 15, 2, 0, 25, 0, NA, 0, 0) 44MUX_CFG("UART3_CLKREQ", 9, 27, 0, 2, 5, 0, NA, 0, 0) 45MUX_CFG("UART3_BCLK", A, 0, 0, 2, 6, 0, NA, 0, 0) 46MUX_CFG("Y15_1610_UART3_RTS", A, 0, 1, 2, 6, 0, NA, 0, 0) 47 48/* PWT & PWL, conflicts with UART3 */ 49MUX_CFG("PWT", 6, 0, 2, 0, 30, 0, NA, 0, 0) 50MUX_CFG("PWL", 6, 3, 1, 0, 31, 1, NA, 0, 0) 51 52/* USB internal master generic */ 53MUX_CFG("R18_USB_VBUS", 7, 9, 2, 1, 11, 0, NA, 0, 1) 54MUX_CFG("R18_1510_USB_GPIO0", 7, 9, 0, 1, 11, 1, NA, 0, 1) 55/* works around erratum: W4_USB_PUEN and W4_USB_PUDIS are switched! */ 56MUX_CFG("W4_USB_PUEN", D, 3, 3, 3, 5, 1, NA, 0, 1) 57MUX_CFG("W4_USB_CLKO", D, 3, 1, 3, 5, 0, NA, 0, 1) 58MUX_CFG("W4_USB_HIGHZ", D, 3, 4, 3, 5, 0, 3, 0, 1) 59MUX_CFG("W4_GPIO58", D, 3, 7, 3, 5, 0, 3, 0, 1) 60 61/* USB1 master */ 62MUX_CFG("USB1_SUSP", 8, 27, 2, 1, 27, 0, NA, 0, 1) 63MUX_CFG("USB1_SE0", 9, 0, 2, 1, 28, 0, NA, 0, 1) 64MUX_CFG("W13_1610_USB1_SE0", 9, 0, 4, 1, 28, 0, NA, 0, 1) 65MUX_CFG("USB1_TXEN", 9, 3, 2, 1, 29, 0, NA, 0, 1) 66MUX_CFG("USB1_TXD", 9, 24, 1, 2, 4, 0, NA, 0, 1) 67MUX_CFG("USB1_VP", A, 3, 1, 2, 7, 0, NA, 0, 1) 68MUX_CFG("USB1_VM", A, 6, 1, 2, 8, 0, NA, 0, 1) 69MUX_CFG("USB1_RCV", A, 9, 1, 2, 9, 0, NA, 0, 1) 70MUX_CFG("USB1_SPEED", A, 12, 2, 2, 10, 0, NA, 0, 1) 71MUX_CFG("R13_1610_USB1_SPEED", A, 12, 5, 2, 10, 0, NA, 0, 1) 72MUX_CFG("R13_1710_USB1_SEO", A, 12, 5, 2, 10, 0, NA, 0, 1) 73 74/* USB2 master */ 75MUX_CFG("USB2_SUSP", B, 3, 1, 2, 17, 0, NA, 0, 1) 76MUX_CFG("USB2_VP", B, 6, 1, 2, 18, 0, NA, 0, 1) 77MUX_CFG("USB2_TXEN", B, 9, 1, 2, 19, 0, NA, 0, 1) 78MUX_CFG("USB2_VM", C, 18, 1, 3, 0, 0, NA, 0, 1) 79MUX_CFG("USB2_RCV", C, 21, 1, 3, 1, 0, NA, 0, 1) 80MUX_CFG("USB2_SE0", C, 24, 2, 3, 2, 0, NA, 0, 1) 81MUX_CFG("USB2_TXD", C, 27, 2, 3, 3, 0, NA, 0, 1) 82 83/* OMAP-1510 GPIO */ 84MUX_CFG("R18_1510_GPIO0", 7, 9, 0, 1, 11, 1, 0, 0, 1) 85MUX_CFG("R19_1510_GPIO1", 7, 6, 0, 1, 10, 1, 0, 0, 1) 86MUX_CFG("M14_1510_GPIO2", 7, 3, 0, 1, 9, 1, 0, 0, 1) 87 88/* OMAP1610 GPIO */ 89MUX_CFG("P18_1610_GPIO3", 7, 0, 0, 1, 8, 0, NA, 0, 1) 90MUX_CFG("Y15_1610_GPIO17", A, 0, 7, 2, 6, 0, NA, 0, 1) 91 92/* OMAP-1710 GPIO */ 93MUX_CFG("R18_1710_GPIO0", 7, 9, 0, 1, 11, 1, 1, 1, 1) 94MUX_CFG("V2_1710_GPIO10", F, 27, 1, 4, 3, 1, 4, 1, 1) 95MUX_CFG("N21_1710_GPIO14", 6, 9, 0, 1, 1, 1, 1, 1, 1) 96MUX_CFG("W15_1710_GPIO40", 9, 27, 7, 2, 5, 1, 2, 1, 1) 97 98/* MPUIO */ 99MUX_CFG("MPUIO2", 7, 18, 0, 1, 14, 1, NA, 0, 1) 100MUX_CFG("N15_1610_MPUIO2", 7, 18, 0, 1, 14, 1, 1, 0, 1) 101MUX_CFG("MPUIO4", 7, 15, 0, 1, 13, 1, NA, 0, 1) 102MUX_CFG("MPUIO5", 7, 12, 0, 1, 12, 1, NA, 0, 1) 103 104MUX_CFG("T20_1610_MPUIO5", 7, 12, 0, 1, 12, 0, 3, 0, 1) 105MUX_CFG("W11_1610_MPUIO6", 10, 15, 2, 3, 8, 0, 3, 0, 1) 106MUX_CFG("V10_1610_MPUIO7", A, 24, 2, 2, 14, 0, 2, 0, 1) 107MUX_CFG("W11_1610_MPUIO9", 10, 15, 1, 3, 8, 0, 3, 0, 1) 108MUX_CFG("V10_1610_MPUIO10", A, 24, 1, 2, 14, 0, 2, 0, 1) 109MUX_CFG("W10_1610_MPUIO11", A, 18, 2, 2, 11, 0, 2, 0, 1) 110MUX_CFG("E20_1610_MPUIO13", 3, 21, 1, 0, 7, 0, 0, 0, 1) 111MUX_CFG("U20_1610_MPUIO14", 9, 6, 6, 0, 30, 0, 0, 0, 1) 112MUX_CFG("E19_1610_MPUIO15", 3, 18, 1, 0, 6, 0, 0, 0, 1) 113 114/* MCBSP2 */ 115MUX_CFG("MCBSP2_CLKR", C, 6, 0, 2, 27, 1, NA, 0, 1) 116MUX_CFG("MCBSP2_CLKX", C, 9, 0, 2, 29, 1, NA, 0, 1) 117MUX_CFG("MCBSP2_DR", C, 0, 0, 2, 26, 1, NA, 0, 1) 118MUX_CFG("MCBSP2_DX", C, 15, 0, 2, 31, 1, NA, 0, 1) 119MUX_CFG("MCBSP2_FSR", C, 12, 0, 2, 30, 1, NA, 0, 1) 120MUX_CFG("MCBSP2_FSX", C, 3, 0, 2, 27, 1, NA, 0, 1) 121 122/* MCBSP3 NOTE: Mode must 1 for clock */ 123MUX_CFG("MCBSP3_CLKX", 9, 3, 1, 1, 29, 0, NA, 0, 1) 124 125/* Misc ballouts */ 126MUX_CFG("BALLOUT_V8_ARMIO3", B, 18, 0, 2, 25, 1, NA, 0, 1) 127MUX_CFG("N20_HDQ", 6, 18, 1, 1, 4, 0, 1, 4, 0) 128 129/* OMAP-1610 MMC2 */ 130MUX_CFG("W8_1610_MMC2_DAT0", B, 21, 6, 2, 23, 1, 2, 1, 1) 131MUX_CFG("V8_1610_MMC2_DAT1", B, 27, 6, 2, 25, 1, 2, 1, 1) 132MUX_CFG("W15_1610_MMC2_DAT2", 9, 12, 6, 2, 5, 1, 2, 1, 1) 133MUX_CFG("R10_1610_MMC2_DAT3", B, 18, 6, 2, 22, 1, 2, 1, 1) 134MUX_CFG("Y10_1610_MMC2_CLK", B, 3, 6, 2, 17, 0, 2, 0, 1) 135MUX_CFG("Y8_1610_MMC2_CMD", B, 24, 6, 2, 24, 1, 2, 1, 1) 136MUX_CFG("V9_1610_MMC2_CMDDIR", B, 12, 6, 2, 20, 0, 2, 1, 1) 137MUX_CFG("V5_1610_MMC2_DATDIR0", B, 15, 6, 2, 21, 0, 2, 1, 1) 138MUX_CFG("W19_1610_MMC2_DATDIR1", 8, 15, 6, 1, 23, 0, 1, 1, 1) 139MUX_CFG("R18_1610_MMC2_CLKIN", 7, 9, 6, 1, 11, 0, 1, 11, 1) 140 141/* OMAP-1610 External Trace Interface */ 142MUX_CFG("M19_1610_ETM_PSTAT0", 5, 27, 1, 0, 29, 0, 0, 0, 1) 143MUX_CFG("L15_1610_ETM_PSTAT1", 5, 24, 1, 0, 28, 0, 0, 0, 1) 144MUX_CFG("L18_1610_ETM_PSTAT2", 5, 21, 1, 0, 27, 0, 0, 0, 1) 145MUX_CFG("L19_1610_ETM_D0", 5, 18, 1, 0, 26, 0, 0, 0, 1) 146MUX_CFG("J19_1610_ETM_D6", 5, 0, 1, 0, 20, 0, 0, 0, 1) 147MUX_CFG("J18_1610_ETM_D7", 5, 27, 1, 0, 19, 0, 0, 0, 1) 148 149/* OMAP16XX GPIO */ 150MUX_CFG("P20_1610_GPIO4", 6, 27, 0, 1, 7, 0, 1, 1, 1) 151MUX_CFG("V9_1610_GPIO7", B, 12, 1, 2, 20, 0, 2, 1, 1) 152MUX_CFG("W8_1610_GPIO9", B, 21, 0, 2, 23, 0, 2, 1, 1) 153MUX_CFG("N20_1610_GPIO11", 6, 18, 0, 1, 4, 0, 1, 1, 1) 154MUX_CFG("N19_1610_GPIO13", 6, 12, 0, 1, 2, 0, 1, 1, 1) 155MUX_CFG("P10_1610_GPIO22", C, 0, 7, 2, 26, 0, 2, 1, 1) 156MUX_CFG("V5_1610_GPIO24", B, 15, 7, 2, 21, 0, 2, 1, 1) 157MUX_CFG("AA20_1610_GPIO_41", 9, 9, 7, 1, 31, 0, 1, 1, 1) 158MUX_CFG("W19_1610_GPIO48", 8, 15, 7, 1, 23, 1, 1, 0, 1) 159MUX_CFG("M7_1610_GPIO62", 10, 0, 0, 4, 24, 0, 4, 0, 1) 160MUX_CFG("V14_16XX_GPIO37", 9, 18, 7, 2, 2, 0, 2, 2, 0) 161MUX_CFG("R9_16XX_GPIO18", C, 18, 7, 3, 0, 0, 3, 0, 0) 162MUX_CFG("L14_16XX_GPIO49", 6, 3, 7, 0, 31, 0, 0, 31, 0) 163 164/* OMAP-1610 uWire */ 165MUX_CFG("V19_1610_UWIRE_SCLK", 8, 6, 0, 1, 20, 0, 1, 1, 1) 166MUX_CFG("U18_1610_UWIRE_SDI", 8, 0, 0, 1, 18, 0, 1, 1, 1) 167MUX_CFG("W21_1610_UWIRE_SDO", 8, 3, 0, 1, 19, 0, 1, 1, 1) 168MUX_CFG("N14_1610_UWIRE_CS0", 8, 9, 1, 1, 21, 0, 1, 1, 1) 169MUX_CFG("P15_1610_UWIRE_CS3", 8, 12, 1, 1, 22, 0, 1, 1, 1) 170MUX_CFG("N15_1610_UWIRE_CS1", 7, 18, 2, 1, 14, 0, NA, 0, 1) 171 172/* OMAP-1610 SPI */ 173MUX_CFG("U19_1610_SPIF_SCK", 7, 21, 6, 1, 15, 0, 1, 1, 1) 174MUX_CFG("U18_1610_SPIF_DIN", 8, 0, 6, 1, 18, 1, 1, 0, 1) 175MUX_CFG("P20_1610_SPIF_DIN", 6, 27, 4, 1, 7, 1, 1, 0, 1) 176MUX_CFG("W21_1610_SPIF_DOUT", 8, 3, 6, 1, 19, 0, 1, 0, 1) 177MUX_CFG("R18_1610_SPIF_DOUT", 7, 9, 3, 1, 11, 0, 1, 0, 1) 178MUX_CFG("N14_1610_SPIF_CS0", 8, 9, 6, 1, 21, 0, 1, 1, 1) 179MUX_CFG("N15_1610_SPIF_CS1", 7, 18, 6, 1, 14, 0, 1, 1, 1) 180MUX_CFG("T19_1610_SPIF_CS2", 7, 15, 4, 1, 13, 0, 1, 1, 1) 181MUX_CFG("P15_1610_SPIF_CS3", 8, 12, 3, 1, 22, 0, 1, 1, 1) 182 183/* OMAP-1610 Flash */ 184MUX_CFG("L3_1610_FLASH_CS2B_OE",10, 6, 1, NA, 0, 0, NA, 0, 1) 185MUX_CFG("M8_1610_FLASH_CS2B_WE",10, 3, 1, NA, 0, 0, NA, 0, 1) 186 187/* First MMC interface, same on 1510, 1610 and 1710 */ 188MUX_CFG("MMC_CMD", A, 27, 0, 2, 15, 1, 2, 1, 1) 189MUX_CFG("MMC_DAT1", A, 24, 0, 2, 14, 1, 2, 1, 1) 190MUX_CFG("MMC_DAT2", A, 18, 0, 2, 12, 1, 2, 1, 1) 191MUX_CFG("MMC_DAT0", B, 0, 0, 2, 16, 1, 2, 1, 1) 192MUX_CFG("MMC_CLK", A, 21, 0, NA, 0, 0, NA, 0, 1) 193MUX_CFG("MMC_DAT3", 10, 15, 0, 3, 8, 1, 3, 1, 1) 194MUX_CFG("M15_1710_MMC_CLKI", 6, 21, 2, 0, 0, 0, NA, 0, 1) 195MUX_CFG("P19_1710_MMC_CMDDIR", 6, 24, 6, 0, 0, 0, NA, 0, 1) 196MUX_CFG("P20_1710_MMC_DATDIR0", 6, 27, 5, 0, 0, 0, NA, 0, 1) 197 198/* OMAP-1610 USB0 alternate configuration */ 199MUX_CFG("W9_USB0_TXEN", B, 9, 5, 2, 19, 0, 2, 0, 1) 200MUX_CFG("AA9_USB0_VP", B, 6, 5, 2, 18, 0, 2, 0, 1) 201MUX_CFG("Y5_USB0_RCV", C, 21, 5, 3, 1, 0, 1, 0, 1) 202MUX_CFG("R9_USB0_VM", C, 18, 5, 3, 0, 0, 3, 0, 1) 203MUX_CFG("V6_USB0_TXD", C, 27, 5, 3, 3, 0, 3, 0, 1) 204MUX_CFG("W5_USB0_SE0", C, 24, 5, 3, 2, 0, 3, 0, 1) 205MUX_CFG("V9_USB0_SPEED", B, 12, 5, 2, 20, 0, 2, 0, 1) 206MUX_CFG("Y10_USB0_SUSP", B, 3, 5, 2, 17, 0, 2, 0, 1) 207 208/* USB2 interface */ 209MUX_CFG("W9_USB2_TXEN", B, 9, 1, NA, 0, 0, NA, 0, 1) 210MUX_CFG("AA9_USB2_VP", B, 6, 1, NA, 0, 0, NA, 0, 1) 211MUX_CFG("Y5_USB2_RCV", C, 21, 1, NA, 0, 0, NA, 0, 1) 212MUX_CFG("R9_USB2_VM", C, 18, 1, NA, 0, 0, NA, 0, 1) 213MUX_CFG("V6_USB2_TXD", C, 27, 2, NA, 0, 0, NA, 0, 1) 214MUX_CFG("W5_USB2_SE0", C, 24, 2, NA, 0, 0, NA, 0, 1) 215 216/* 16XX UART */ 217MUX_CFG("R13_1610_UART1_TX", A, 12, 6, 2, 10, 0, 2, 10, 1) 218MUX_CFG("V14_16XX_UART1_RX", 9, 18, 0, 2, 2, 0, 2, 2, 1) 219MUX_CFG("R14_1610_UART1_CTS", 9, 15, 0, 2, 1, 0, 2, 1, 1) 220MUX_CFG("AA15_1610_UART1_RTS", 9, 12, 1, 2, 0, 0, 2, 0, 1) 221MUX_CFG("R9_16XX_UART2_RX", C, 18, 0, 3, 0, 0, 3, 0, 1) 222MUX_CFG("L14_16XX_UART3_RX", 6, 3, 0, 0, 31, 0, 0, 31, 1) 223 224/* I2C interface */ 225MUX_CFG("I2C_SCL", 7, 24, 0, NA, 0, 0, NA, 0, 0) 226MUX_CFG("I2C_SDA", 7, 27, 0, NA, 0, 0, NA, 0, 0) 227 228/* Keypad */ 229MUX_CFG("F18_1610_KBC0", 3, 15, 0, 0, 5, 1, 0, 0, 0) 230MUX_CFG("D20_1610_KBC1", 3, 12, 0, 0, 4, 1, 0, 0, 0) 231MUX_CFG("D19_1610_KBC2", 3, 9, 0, 0, 3, 1, 0, 0, 0) 232MUX_CFG("E18_1610_KBC3", 3, 6, 0, 0, 2, 1, 0, 0, 0) 233MUX_CFG("C21_1610_KBC4", 3, 3, 0, 0, 1, 1, 0, 0, 0) 234MUX_CFG("G18_1610_KBR0", 4, 0, 0, 0, 10, 1, 0, 1, 0) 235MUX_CFG("F19_1610_KBR1", 3, 27, 0, 0, 9, 1, 0, 1, 0) 236MUX_CFG("H14_1610_KBR2", 3, 24, 0, 0, 8, 1, 0, 1, 0) 237MUX_CFG("E20_1610_KBR3", 3, 21, 0, 0, 7, 1, 0, 1, 0) 238MUX_CFG("E19_1610_KBR4", 3, 18, 0, 0, 6, 1, 0, 1, 0) 239MUX_CFG("N19_1610_KBR5", 6, 12, 1, 1, 2, 1, 1, 1, 0) 240 241/* Power management */ 242MUX_CFG("T20_1610_LOW_PWR", 7, 12, 1, NA, 0, 0, NA, 0, 0) 243 244/* MCLK Settings */ 245MUX_CFG("V5_1710_MCLK_ON", B, 15, 0, NA, 0, 0, NA, 0, 0) 246MUX_CFG("V5_1710_MCLK_OFF", B, 15, 6, NA, 0, 0, NA, 0, 0) 247MUX_CFG("R10_1610_MCLK_ON", B, 18, 0, NA, 22, 0, NA, 1, 0) 248MUX_CFG("R10_1610_MCLK_OFF", B, 18, 6, 2, 22, 1, 2, 1, 1) 249 250/* CompactFlash controller, conflicts with MMC1 */ 251MUX_CFG("P11_1610_CF_CD2", A, 27, 3, 2, 15, 1, 2, 1, 1) 252MUX_CFG("R11_1610_CF_IOIS16", B, 0, 3, 2, 16, 1, 2, 1, 1) 253MUX_CFG("V10_1610_CF_IREQ", A, 24, 3, 2, 14, 0, 2, 0, 1) 254MUX_CFG("W10_1610_CF_RESET", A, 18, 3, 2, 12, 1, 2, 1, 1) 255MUX_CFG("W11_1610_CF_CD1", 10, 15, 3, 3, 8, 1, 3, 1, 1) 256 257/* parallel camera */ 258MUX_CFG("J15_1610_CAM_LCLK", 4, 24, 0, 0, 18, 1, 0, 0, 0) 259MUX_CFG("J18_1610_CAM_D7", 4, 27, 0, 0, 19, 1, 0, 0, 0) 260MUX_CFG("J19_1610_CAM_D6", 5, 0, 0, 0, 20, 1, 0, 0, 0) 261MUX_CFG("J14_1610_CAM_D5", 5, 3, 0, 0, 21, 1, 0, 0, 0) 262MUX_CFG("K18_1610_CAM_D4", 5, 6, 0, 0, 22, 1, 0, 0, 0) 263MUX_CFG("K19_1610_CAM_D3", 5, 9, 0, 0, 23, 1, 0, 0, 0) 264MUX_CFG("K15_1610_CAM_D2", 5, 12, 0, 0, 24, 1, 0, 0, 0) 265MUX_CFG("K14_1610_CAM_D1", 5, 15, 0, 0, 25, 1, 0, 0, 0) 266MUX_CFG("L19_1610_CAM_D0", 5, 18, 0, 0, 26, 1, 0, 0, 0) 267MUX_CFG("L18_1610_CAM_VS", 5, 21, 0, 0, 27, 1, 0, 0, 0) 268MUX_CFG("L15_1610_CAM_HS", 5, 24, 0, 0, 28, 1, 0, 0, 0) 269MUX_CFG("M19_1610_CAM_RSTZ", 5, 27, 0, 0, 29, 0, 0, 0, 0) 270MUX_CFG("Y15_1610_CAM_OUTCLK", A, 0, 6, 2, 6, 0, 2, 0, 0) 271 272/* serial camera */ 273MUX_CFG("H19_1610_CAM_EXCLK", 4, 21, 0, 0, 17, 0, 0, 0, 0) 274 /* REVISIT 5912 spec sez CCP_* can't pullup or pulldown ... ? */ 275MUX_CFG("Y12_1610_CCP_CLKP", 8, 18, 6, 1, 24, 1, 1, 0, 0) 276MUX_CFG("W13_1610_CCP_CLKM", 9, 0, 6, 1, 28, 1, 1, 0, 0) 277MUX_CFG("W14_1610_CCP_DATAP", 9, 24, 6, 2, 4, 1, 2, 0, 0) 278MUX_CFG("Y14_1610_CCP_DATAM", 9, 21, 6, 2, 3, 1, 2, 0, 0) 279}; 280#define OMAP1XXX_PINS_SZ ARRAY_SIZE(omap1xxx_pins) 281#else 282#define omap1xxx_pins NULL 283#define OMAP1XXX_PINS_SZ 0 284#endif /* CONFIG_ARCH_OMAP15XX || CONFIG_ARCH_OMAP16XX */ 285 286static int omap1_cfg_reg(const struct pin_config *cfg) 287{ 288 static DEFINE_SPINLOCK(mux_spin_lock); 289 unsigned long flags; 290 unsigned int reg_orig = 0, reg = 0, pu_pd_orig = 0, pu_pd = 0, 291 pull_orig = 0, pull = 0; 292 unsigned int mask, warn = 0; 293 294 /* Check the mux register in question */ 295 if (cfg->mux_reg) { 296 unsigned tmp1, tmp2; 297 298 spin_lock_irqsave(&mux_spin_lock, flags); 299 reg_orig = omap_readl(cfg->mux_reg); 300 301 /* The mux registers always seem to be 3 bits long */ 302 mask = (0x7 << cfg->mask_offset); 303 tmp1 = reg_orig & mask; 304 reg = reg_orig & ~mask; 305 306 tmp2 = (cfg->mask << cfg->mask_offset); 307 reg |= tmp2; 308 309 if (tmp1 != tmp2) 310 warn = 1; 311 312 omap_writel(reg, cfg->mux_reg); 313 spin_unlock_irqrestore(&mux_spin_lock, flags); 314 } 315 316 /* Check for pull up or pull down selection on 1610 */ 317 if (!cpu_is_omap15xx()) { 318 if (cfg->pu_pd_reg && cfg->pull_val) { 319 spin_lock_irqsave(&mux_spin_lock, flags); 320 pu_pd_orig = omap_readl(cfg->pu_pd_reg); 321 mask = 1 << cfg->pull_bit; 322 323 if (cfg->pu_pd_val) { 324 if (!(pu_pd_orig & mask)) 325 warn = 1; 326 /* Use pull up */ 327 pu_pd = pu_pd_orig | mask; 328 } else { 329 if (pu_pd_orig & mask) 330 warn = 1; 331 /* Use pull down */ 332 pu_pd = pu_pd_orig & ~mask; 333 } 334 omap_writel(pu_pd, cfg->pu_pd_reg); 335 spin_unlock_irqrestore(&mux_spin_lock, flags); 336 } 337 } 338 339 /* Check for an associated pull down register */ 340 if (cfg->pull_reg) { 341 spin_lock_irqsave(&mux_spin_lock, flags); 342 pull_orig = omap_readl(cfg->pull_reg); 343 mask = 1 << cfg->pull_bit; 344 345 if (cfg->pull_val) { 346 if (pull_orig & mask) 347 warn = 1; 348 /* Low bit = pull enabled */ 349 pull = pull_orig & ~mask; 350 } else { 351 if (!(pull_orig & mask)) 352 warn = 1; 353 /* High bit = pull disabled */ 354 pull = pull_orig | mask; 355 } 356 357 omap_writel(pull, cfg->pull_reg); 358 spin_unlock_irqrestore(&mux_spin_lock, flags); 359 } 360 361 if (warn) { 362#ifdef CONFIG_OMAP_MUX_WARNINGS 363 printk(KERN_WARNING "MUX: initialized %s\n", cfg->name); 364#endif 365 } 366 367#ifdef CONFIG_OMAP_MUX_DEBUG 368 if (cfg->debug || warn) { 369 printk("MUX: Setting register %s\n", cfg->name); 370 printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", 371 cfg->mux_reg_name, cfg->mux_reg, reg_orig, reg); 372 373 if (!cpu_is_omap15xx()) { 374 if (cfg->pu_pd_reg && cfg->pull_val) { 375 printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", 376 cfg->pu_pd_name, cfg->pu_pd_reg, 377 pu_pd_orig, pu_pd); 378 } 379 } 380 381 if (cfg->pull_reg) 382 printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", 383 cfg->pull_name, cfg->pull_reg, pull_orig, pull); 384 } 385#endif 386 387#ifdef CONFIG_OMAP_MUX_WARNINGS 388 return warn ? -ETXTBSY : 0; 389#else 390 return 0; 391#endif 392} 393 394static struct omap_mux_cfg *mux_cfg; 395 396int __init omap_mux_register(struct omap_mux_cfg *arch_mux_cfg) 397{ 398 if (!arch_mux_cfg || !arch_mux_cfg->pins || arch_mux_cfg->size == 0 399 || !arch_mux_cfg->cfg_reg) { 400 printk(KERN_ERR "Invalid pin table\n"); 401 return -EINVAL; 402 } 403 404 mux_cfg = arch_mux_cfg; 405 406 return 0; 407} 408 409/* 410 * Sets the Omap MUX and PULL_DWN registers based on the table 411 */ 412int omap_cfg_reg(const unsigned long index) 413{ 414 struct pin_config *reg; 415 416 if (!cpu_class_is_omap1()) { 417 printk(KERN_ERR "mux: Broken omap_cfg_reg(%lu) entry\n", 418 index); 419 WARN_ON(1); 420 return -EINVAL; 421 } 422 423 if (mux_cfg == NULL) { 424 printk(KERN_ERR "Pin mux table not initialized\n"); 425 return -ENODEV; 426 } 427 428 if (index >= mux_cfg->size) { 429 printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n", 430 index, mux_cfg->size); 431 dump_stack(); 432 return -ENODEV; 433 } 434 435 reg = &mux_cfg->pins[index]; 436 437 if (!mux_cfg->cfg_reg) 438 return -ENODEV; 439 440 return mux_cfg->cfg_reg(reg); 441} 442EXPORT_SYMBOL(omap_cfg_reg); 443 444int __init omap1_mux_init(void) 445{ 446 if (cpu_is_omap15xx() || cpu_is_omap16xx()) { 447 arch_mux_cfg.pins = omap1xxx_pins; 448 arch_mux_cfg.size = OMAP1XXX_PINS_SZ; 449 arch_mux_cfg.cfg_reg = omap1_cfg_reg; 450 } 451 452 return omap_mux_register(&arch_mux_cfg); 453} 454 455#else 456#define omap_mux_init() do {} while(0) 457#define omap_cfg_reg(x) do {} while(0) 458#endif /* CONFIG_OMAP_MUX */ 459 460