arch/arm/mach-tegra/include/mach/pinmux.h

   1 /*
   2  * linux/arch/arm/mach-tegra/include/mach/pinmux.h
   3  *
   4  * Copyright (C) 2010 Google, Inc.
   5  * Copyright (C) 2010,2011 Nvidia, Inc.
   6  *
   7  * This software is licensed under the terms of the GNU General Public
   8  * License version 2, as published by the Free Software Foundation, and
   9  * may be copied, distributed, and modified under those terms.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  */
  17
  18 #ifndef __MACH_TEGRA_PINMUX_H
  19 #define __MACH_TEGRA_PINMUX_H
  20
  21 enum tegra_mux_func {
  22         TEGRA_MUX_RSVD = 0x8000,
  23         TEGRA_MUX_RSVD1 = 0x8000,
  24         TEGRA_MUX_RSVD2 = 0x8001,
  25         TEGRA_MUX_RSVD3 = 0x8002,
  26         TEGRA_MUX_RSVD4 = 0x8003,
  27         TEGRA_MUX_NONE = -1,
  28         TEGRA_MUX_AHB_CLK,
  29         TEGRA_MUX_APB_CLK,
  30         TEGRA_MUX_AUDIO_SYNC,
  31         TEGRA_MUX_CRT,
  32         TEGRA_MUX_DAP1,
  33         TEGRA_MUX_DAP2,
  34         TEGRA_MUX_DAP3,
  35         TEGRA_MUX_DAP4,
  36         TEGRA_MUX_DAP5,
  37         TEGRA_MUX_DISPLAYA,
  38         TEGRA_MUX_DISPLAYB,
  39         TEGRA_MUX_EMC_TEST0_DLL,
  40         TEGRA_MUX_EMC_TEST1_DLL,
  41         TEGRA_MUX_GMI,
  42         TEGRA_MUX_GMI_INT,
  43         TEGRA_MUX_HDMI,
  44         TEGRA_MUX_I2C,
  45         TEGRA_MUX_I2C2,
  46         TEGRA_MUX_I2C3,
  47         TEGRA_MUX_IDE,
  48         TEGRA_MUX_IRDA,
  49         TEGRA_MUX_KBC,
  50         TEGRA_MUX_MIO,
  51         TEGRA_MUX_MIPI_HS,
  52         TEGRA_MUX_NAND,
  53         TEGRA_MUX_OSC,
  54         TEGRA_MUX_OWR,
  55         TEGRA_MUX_PCIE,
  56         TEGRA_MUX_PLLA_OUT,
  57         TEGRA_MUX_PLLC_OUT1,
  58         TEGRA_MUX_PLLM_OUT1,
  59         TEGRA_MUX_PLLP_OUT2,
  60         TEGRA_MUX_PLLP_OUT3,
  61         TEGRA_MUX_PLLP_OUT4,
  62         TEGRA_MUX_PWM,
  63         TEGRA_MUX_PWR_INTR,
  64         TEGRA_MUX_PWR_ON,
  65         TEGRA_MUX_RTCK,
  66         TEGRA_MUX_SDIO1,
  67         TEGRA_MUX_SDIO2,
  68         TEGRA_MUX_SDIO3,
  69         TEGRA_MUX_SDIO4,
  70         TEGRA_MUX_SFLASH,
  71         TEGRA_MUX_SPDIF,
  72         TEGRA_MUX_SPI1,
  73         TEGRA_MUX_SPI2,
  74         TEGRA_MUX_SPI2_ALT,
  75         TEGRA_MUX_SPI3,
  76         TEGRA_MUX_SPI4,
  77         TEGRA_MUX_TRACE,
  78         TEGRA_MUX_TWC,
  79         TEGRA_MUX_UARTA,
  80         TEGRA_MUX_UARTB,
  81         TEGRA_MUX_UARTC,
  82         TEGRA_MUX_UARTD,
  83         TEGRA_MUX_UARTE,
  84         TEGRA_MUX_ULPI,
  85         TEGRA_MUX_VI,
  86         TEGRA_MUX_VI_SENSOR_CLK,
  87         TEGRA_MUX_XIO,
  88         TEGRA_MUX_SAFE,
  89         TEGRA_MAX_MUX,
  90 };
  91
  92 enum tegra_pullupdown {
  93         TEGRA_PUPD_NORMAL = 0,
  94         TEGRA_PUPD_PULL_DOWN,
  95         TEGRA_PUPD_PULL_UP,
  96 };
  97
  98 enum tegra_tristate {
  99         TEGRA_TRI_NORMAL = 0,
 100         TEGRA_TRI_TRISTATE = 1,
 101 };
 102
 103 enum tegra_pin_io {
 104         TEGRA_PIN_OUTPUT = 0,
 105         TEGRA_PIN_INPUT = 1,
 106 };
 107
 108 enum tegra_vddio {
 109         TEGRA_VDDIO_BB = 0,
 110         TEGRA_VDDIO_LCD,
 111         TEGRA_VDDIO_VI,
 112         TEGRA_VDDIO_UART,
 113         TEGRA_VDDIO_DDR,
 114         TEGRA_VDDIO_NAND,
 115         TEGRA_VDDIO_SYS,
 116         TEGRA_VDDIO_AUDIO,
 117         TEGRA_VDDIO_SD,
 118 };
 119
 120 struct tegra_pingroup_config {
 121         int pingroup;
 122         enum tegra_mux_func     func;
 123         enum tegra_pullupdown   pupd;
 124         enum tegra_tristate     tristate;
 125 };
 126
 127 enum tegra_slew {
 128         TEGRA_SLEW_FASTEST = 0,
 129         TEGRA_SLEW_FAST,
 130         TEGRA_SLEW_SLOW,
 131         TEGRA_SLEW_SLOWEST,
 132         TEGRA_MAX_SLEW,
 133 };
 134
 135 enum tegra_pull_strength {
 136         TEGRA_PULL_0 = 0,
 137         TEGRA_PULL_1,
 138         TEGRA_PULL_2,
 139         TEGRA_PULL_3,
 140         TEGRA_PULL_4,
 141         TEGRA_PULL_5,
 142         TEGRA_PULL_6,
 143         TEGRA_PULL_7,
 144         TEGRA_PULL_8,
 145         TEGRA_PULL_9,
 146         TEGRA_PULL_10,
 147         TEGRA_PULL_11,
 148         TEGRA_PULL_12,
 149         TEGRA_PULL_13,
 150         TEGRA_PULL_14,
 151         TEGRA_PULL_15,
 152         TEGRA_PULL_16,
 153         TEGRA_PULL_17,
 154         TEGRA_PULL_18,
 155         TEGRA_PULL_19,
 156         TEGRA_PULL_20,
 157         TEGRA_PULL_21,
 158         TEGRA_PULL_22,
 159         TEGRA_PULL_23,
 160         TEGRA_PULL_24,
 161         TEGRA_PULL_25,
 162         TEGRA_PULL_26,
 163         TEGRA_PULL_27,
 164         TEGRA_PULL_28,
 165         TEGRA_PULL_29,
 166         TEGRA_PULL_30,
 167         TEGRA_PULL_31,
 168         TEGRA_MAX_PULL,
 169 };
 170
 171 enum tegra_drive {
 172         TEGRA_DRIVE_DIV_8 = 0,
 173         TEGRA_DRIVE_DIV_4,
 174         TEGRA_DRIVE_DIV_2,
 175         TEGRA_DRIVE_DIV_1,
 176         TEGRA_MAX_DRIVE,
 177 };
 178
 179 enum tegra_hsm {
 180         TEGRA_HSM_DISABLE = 0,
 181         TEGRA_HSM_ENABLE,
 182 };
 183
 184 enum tegra_schmitt {
 185         TEGRA_SCHMITT_DISABLE = 0,
 186         TEGRA_SCHMITT_ENABLE,
 187 };
 188
 189 struct tegra_drive_pingroup_config {
 190         int pingroup;
 191         enum tegra_hsm hsm;
 192         enum tegra_schmitt schmitt;
 193         enum tegra_drive drive;
 194         enum tegra_pull_strength pull_down;
 195         enum tegra_pull_strength pull_up;
 196         enum tegra_slew slew_rising;
 197         enum tegra_slew slew_falling;
 198 };
 199
 200 struct tegra_drive_pingroup_desc {
 201         const char *name;
 202         s16 reg_bank;
 203         s16 reg;
 204 };
 205
 206 struct tegra_pingroup_desc {
 207         const char *name;
 208         int funcs[4];
 209         int func_safe;
 210         int vddio;
 211         enum tegra_pin_io io_default;
 212         s16 tri_bank;   /* Register bank the tri_reg exists within */
 213         s16 mux_bank;   /* Register bank the mux_reg exists within */
 214         s16 pupd_bank;  /* Register bank the pupd_reg exists within */
 215         s16 tri_reg;    /* offset into the TRISTATE_REG_* register bank */
 216         s16 mux_reg;    /* offset into the PIN_MUX_CTL_* register bank */
 217         s16 pupd_reg;   /* offset into the PULL_UPDOWN_REG_* register bank */
 218         s8 tri_bit;     /* offset into the TRISTATE_REG_* register bit */
 219         s8 mux_bit;     /* offset into the PIN_MUX_CTL_* register bit */
 220         s8 pupd_bit;    /* offset into the PULL_UPDOWN_REG_* register bit */
 221         s8 lock_bit;    /* offset of the LOCK bit into mux register bit */
 222         s8 od_bit;      /* offset of the OD bit into mux register bit */
 223         s8 ioreset_bit; /* offset of the IO_RESET bit into mux register bit */
 224 };
 225
 226 typedef void (*pinmux_init) (const struct tegra_pingroup_desc **pg,
 227         int *pg_max, const struct tegra_drive_pingroup_desc **pgdrive,
 228         int *pgdrive_max);
 229
 230 void tegra20_pinmux_init(const struct tegra_pingroup_desc **pg, int *pg_max,
 231         const struct tegra_drive_pingroup_desc **pgdrive, int *pgdrive_max);
 232
 233 int tegra_pinmux_set_tristate(int pg, enum tegra_tristate tristate);
 234 int tegra_pinmux_set_pullupdown(int pg, enum tegra_pullupdown pupd);
 235
 236 void tegra_pinmux_config_table(const struct tegra_pingroup_config *config,
 237         int len);
 238
 239 void tegra_drive_pinmux_config_table(struct tegra_drive_pingroup_config *config,
 240         int len);
 241 void tegra_pinmux_set_safe_pinmux_table(const struct tegra_pingroup_config *config,
 242         int len);
 243 void tegra_pinmux_config_pinmux_table(const struct tegra_pingroup_config *config,
 244         int len);
 245 void tegra_pinmux_config_tristate_table(const struct tegra_pingroup_config *config,
 246         int len, enum tegra_tristate tristate);
 247 void tegra_pinmux_config_pullupdown_table(const struct tegra_pingroup_config *config,
 248         int len, enum tegra_pullupdown pupd);
 249 #endif