diff options
Diffstat (limited to 'arch/arm/mach-tegra/pinmux.c')
| -rw-r--r-- | arch/arm/mach-tegra/pinmux.c | 987 |
1 files changed, 0 insertions, 987 deletions
diff --git a/arch/arm/mach-tegra/pinmux.c b/arch/arm/mach-tegra/pinmux.c deleted file mode 100644 index ac35d2b76850..000000000000 --- a/arch/arm/mach-tegra/pinmux.c +++ /dev/null @@ -1,987 +0,0 @@ -/* - * linux/arch/arm/mach-tegra/pinmux.c - * - * Copyright (C) 2010 Google, Inc. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/platform_device.h> -#include <linux/of_device.h> - -#include <mach/iomap.h> -#include <mach/pinmux.h> - -#define HSM_EN(reg) (((reg) >> 2) & 0x1) -#define SCHMT_EN(reg) (((reg) >> 3) & 0x1) -#define LPMD(reg) (((reg) >> 4) & 0x3) -#define DRVDN(reg) (((reg) >> 12) & 0x1f) -#define DRVUP(reg) (((reg) >> 20) & 0x1f) -#define SLWR(reg) (((reg) >> 28) & 0x3) -#define SLWF(reg) (((reg) >> 30) & 0x3) - -static const struct tegra_pingroup_desc *pingroups; -static const struct tegra_drive_pingroup_desc *drive_pingroups; -static int pingroup_max; -static int drive_max; - -static char *tegra_mux_names[TEGRA_MAX_MUX] = { - [TEGRA_MUX_AHB_CLK] = "AHB_CLK", - [TEGRA_MUX_APB_CLK] = "APB_CLK", - [TEGRA_MUX_AUDIO_SYNC] = "AUDIO_SYNC", - [TEGRA_MUX_CRT] = "CRT", - [TEGRA_MUX_DAP1] = "DAP1", - [TEGRA_MUX_DAP2] = "DAP2", - [TEGRA_MUX_DAP3] = "DAP3", - [TEGRA_MUX_DAP4] = "DAP4", - [TEGRA_MUX_DAP5] = "DAP5", - [TEGRA_MUX_DISPLAYA] = "DISPLAYA", - [TEGRA_MUX_DISPLAYB] = "DISPLAYB", - [TEGRA_MUX_EMC_TEST0_DLL] = "EMC_TEST0_DLL", - [TEGRA_MUX_EMC_TEST1_DLL] = "EMC_TEST1_DLL", - [TEGRA_MUX_GMI] = "GMI", - [TEGRA_MUX_GMI_INT] = "GMI_INT", - [TEGRA_MUX_HDMI] = "HDMI", - [TEGRA_MUX_I2C] = "I2C", - [TEGRA_MUX_I2C2] = "I2C2", - [TEGRA_MUX_I2C3] = "I2C3", - [TEGRA_MUX_IDE] = "IDE", - [TEGRA_MUX_IRDA] = "IRDA", - [TEGRA_MUX_KBC] = "KBC", - [TEGRA_MUX_MIO] = "MIO", - [TEGRA_MUX_MIPI_HS] = "MIPI_HS", - [TEGRA_MUX_NAND] = "NAND", - [TEGRA_MUX_OSC] = "OSC", - [TEGRA_MUX_OWR] = "OWR", - [TEGRA_MUX_PCIE] = "PCIE", - [TEGRA_MUX_PLLA_OUT] = "PLLA_OUT", - [TEGRA_MUX_PLLC_OUT1] = "PLLC_OUT1", - [TEGRA_MUX_PLLM_OUT1] = "PLLM_OUT1", - [TEGRA_MUX_PLLP_OUT2] = "PLLP_OUT2", - [TEGRA_MUX_PLLP_OUT3] = "PLLP_OUT3", - [TEGRA_MUX_PLLP_OUT4] = "PLLP_OUT4", - [TEGRA_MUX_PWM] = "PWM", - [TEGRA_MUX_PWR_INTR] = "PWR_INTR", - [TEGRA_MUX_PWR_ON] = "PWR_ON", - [TEGRA_MUX_RTCK] = "RTCK", - [TEGRA_MUX_SDIO1] = "SDIO1", - [TEGRA_MUX_SDIO2] = "SDIO2", - [TEGRA_MUX_SDIO3] = "SDIO3", - [TEGRA_MUX_SDIO4] = "SDIO4", - [TEGRA_MUX_SFLASH] = "SFLASH", - [TEGRA_MUX_SPDIF] = "SPDIF", - [TEGRA_MUX_SPI1] = "SPI1", - [TEGRA_MUX_SPI2] = "SPI2", - [TEGRA_MUX_SPI2_ALT] = "SPI2_ALT", - [TEGRA_MUX_SPI3] = "SPI3", - [TEGRA_MUX_SPI4] = "SPI4", - [TEGRA_MUX_TRACE] = "TRACE", - [TEGRA_MUX_TWC] = "TWC", - [TEGRA_MUX_UARTA] = "UARTA", - [TEGRA_MUX_UARTB] = "UARTB", - [TEGRA_MUX_UARTC] = "UARTC", - [TEGRA_MUX_UARTD] = "UARTD", - [TEGRA_MUX_UARTE] = "UARTE", - [TEGRA_MUX_ULPI] = "ULPI", - [TEGRA_MUX_VI] = "VI", - [TEGRA_MUX_VI_SENSOR_CLK] = "VI_SENSOR_CLK", - [TEGRA_MUX_XIO] = "XIO", - [TEGRA_MUX_BLINK] = "BLINK", - [TEGRA_MUX_CEC] = "CEC", - [TEGRA_MUX_CLK12] = "CLK12", - [TEGRA_MUX_DAP] = "DAP", - [TEGRA_MUX_DAPSDMMC2] = "DAPSDMMC2", - [TEGRA_MUX_DDR] = "DDR", - [TEGRA_MUX_DEV3] = "DEV3", - [TEGRA_MUX_DTV] = "DTV", - [TEGRA_MUX_VI_ALT1] = "VI_ALT1", - [TEGRA_MUX_VI_ALT2] = "VI_ALT2", - [TEGRA_MUX_VI_ALT3] = "VI_ALT3", - [TEGRA_MUX_EMC_DLL] = "EMC_DLL", - [TEGRA_MUX_EXTPERIPH1] = "EXTPERIPH1", - [TEGRA_MUX_EXTPERIPH2] = "EXTPERIPH2", - [TEGRA_MUX_EXTPERIPH3] = "EXTPERIPH3", - [TEGRA_MUX_GMI_ALT] = "GMI_ALT", - [TEGRA_MUX_HDA] = "HDA", - [TEGRA_MUX_HSI] = "HSI", - [TEGRA_MUX_I2C4] = "I2C4", - [TEGRA_MUX_I2C5] = "I2C5", - [TEGRA_MUX_I2CPWR] = "I2CPWR", - [TEGRA_MUX_I2S0] = "I2S0", - [TEGRA_MUX_I2S1] = "I2S1", - [TEGRA_MUX_I2S2] = "I2S2", - [TEGRA_MUX_I2S3] = "I2S3", - [TEGRA_MUX_I2S4] = "I2S4", - [TEGRA_MUX_NAND_ALT] = "NAND_ALT", - [TEGRA_MUX_POPSDIO4] = "POPSDIO4", - [TEGRA_MUX_POPSDMMC4] = "POPSDMMC4", - [TEGRA_MUX_PWM0] = "PWM0", - [TEGRA_MUX_PWM1] = "PWM2", - [TEGRA_MUX_PWM2] = "PWM2", - [TEGRA_MUX_PWM3] = "PWM3", - [TEGRA_MUX_SATA] = "SATA", - [TEGRA_MUX_SPI5] = "SPI5", - [TEGRA_MUX_SPI6] = "SPI6", - [TEGRA_MUX_SYSCLK] = "SYSCLK", - [TEGRA_MUX_VGP1] = "VGP1", - [TEGRA_MUX_VGP2] = "VGP2", - [TEGRA_MUX_VGP3] = "VGP3", - [TEGRA_MUX_VGP4] = "VGP4", - [TEGRA_MUX_VGP5] = "VGP5", - [TEGRA_MUX_VGP6] = "VGP6", - [TEGRA_MUX_SAFE] = "<safe>", -}; - -static const char *tegra_drive_names[TEGRA_MAX_DRIVE] = { - [TEGRA_DRIVE_DIV_8] = "DIV_8", - [TEGRA_DRIVE_DIV_4] = "DIV_4", - [TEGRA_DRIVE_DIV_2] = "DIV_2", - [TEGRA_DRIVE_DIV_1] = "DIV_1", -}; - -static const char *tegra_slew_names[TEGRA_MAX_SLEW] = { - [TEGRA_SLEW_FASTEST] = "FASTEST", - [TEGRA_SLEW_FAST] = "FAST", - [TEGRA_SLEW_SLOW] = "SLOW", - [TEGRA_SLEW_SLOWEST] = "SLOWEST", -}; - -static DEFINE_SPINLOCK(mux_lock); - -static const char *pingroup_name(int pg) -{ - if (pg < 0 || pg >= pingroup_max) - return "<UNKNOWN>"; - - return pingroups[pg].name; -} - -static const char *func_name(enum tegra_mux_func func) -{ - if (func == TEGRA_MUX_RSVD1) - return "RSVD1"; - - if (func == TEGRA_MUX_RSVD2) - return "RSVD2"; - - if (func == TEGRA_MUX_RSVD3) - return "RSVD3"; - - if (func == TEGRA_MUX_RSVD4) - return "RSVD4"; - - if (func == TEGRA_MUX_NONE) - return "NONE"; - - if (func < 0 || func >= TEGRA_MAX_MUX) - return "<UNKNOWN>"; - - return tegra_mux_names[func]; -} - - -static const char *tri_name(unsigned long val) -{ - return val ? "TRISTATE" : "NORMAL"; -} - -static const char *pupd_name(unsigned long val) -{ - switch (val) { - case 0: - return "NORMAL"; - - case 1: - return "PULL_DOWN"; - - case 2: - return "PULL_UP"; - - default: - return "RSVD"; - } -} - -static int nbanks; -static void __iomem **regs; - -static inline u32 pg_readl(u32 bank, u32 reg) -{ - return readl(regs[bank] + reg); -} - -static inline void pg_writel(u32 val, u32 bank, u32 reg) -{ - writel(val, regs[bank] + reg); -} - -static int tegra_pinmux_set_func(const struct tegra_pingroup_config *config) -{ - int mux = -1; - int i; - unsigned long reg; - unsigned long flags; - int pg = config->pingroup; - enum tegra_mux_func func = config->func; - - if (pg < 0 || pg >= pingroup_max) - return -ERANGE; - - if (pingroups[pg].mux_reg < 0) - return -EINVAL; - - if (func < 0) - return -ERANGE; - - if (func == TEGRA_MUX_SAFE) - func = pingroups[pg].func_safe; - - if (func & TEGRA_MUX_RSVD) { - mux = func & 0x3; - } else { - for (i = 0; i < 4; i++) { - if (pingroups[pg].funcs[i] == func) { - mux = i; - break; - } - } - } - - if (mux < 0) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(pingroups[pg].mux_bank, pingroups[pg].mux_reg); - reg &= ~(0x3 << pingroups[pg].mux_bit); - reg |= mux << pingroups[pg].mux_bit; - pg_writel(reg, pingroups[pg].mux_bank, pingroups[pg].mux_reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -int tegra_pinmux_set_tristate(int pg, enum tegra_tristate tristate) -{ - unsigned long reg; - unsigned long flags; - - if (pg < 0 || pg >= pingroup_max) - return -ERANGE; - - if (pingroups[pg].tri_reg < 0) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(pingroups[pg].tri_bank, pingroups[pg].tri_reg); - reg &= ~(0x1 << pingroups[pg].tri_bit); - if (tristate) - reg |= 1 << pingroups[pg].tri_bit; - pg_writel(reg, pingroups[pg].tri_bank, pingroups[pg].tri_reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -int tegra_pinmux_set_pullupdown(int pg, enum tegra_pullupdown pupd) -{ - unsigned long reg; - unsigned long flags; - - if (pg < 0 || pg >= pingroup_max) - return -ERANGE; - - if (pingroups[pg].pupd_reg < 0) - return -EINVAL; - - if (pupd != TEGRA_PUPD_NORMAL && - pupd != TEGRA_PUPD_PULL_DOWN && - pupd != TEGRA_PUPD_PULL_UP) - return -EINVAL; - - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(pingroups[pg].pupd_bank, pingroups[pg].pupd_reg); - reg &= ~(0x3 << pingroups[pg].pupd_bit); - reg |= pupd << pingroups[pg].pupd_bit; - pg_writel(reg, pingroups[pg].pupd_bank, pingroups[pg].pupd_reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static void tegra_pinmux_config_pingroup(const struct tegra_pingroup_config *config) -{ - int pingroup = config->pingroup; - enum tegra_mux_func func = config->func; - enum tegra_pullupdown pupd = config->pupd; - enum tegra_tristate tristate = config->tristate; - int err; - - if (pingroups[pingroup].mux_reg >= 0) { - err = tegra_pinmux_set_func(config); - if (err < 0) - pr_err("pinmux: can't set pingroup %s func to %s: %d\n", - pingroup_name(pingroup), func_name(func), err); - } - - if (pingroups[pingroup].pupd_reg >= 0) { - err = tegra_pinmux_set_pullupdown(pingroup, pupd); - if (err < 0) - pr_err("pinmux: can't set pingroup %s pullupdown to %s: %d\n", - pingroup_name(pingroup), pupd_name(pupd), err); - } - - if (pingroups[pingroup].tri_reg >= 0) { - err = tegra_pinmux_set_tristate(pingroup, tristate); - if (err < 0) - pr_err("pinmux: can't set pingroup %s tristate to %s: %d\n", - pingroup_name(pingroup), tri_name(func), err); - } -} - -void tegra_pinmux_config_table(const struct tegra_pingroup_config *config, int len) -{ - int i; - - for (i = 0; i < len; i++) - tegra_pinmux_config_pingroup(&config[i]); -} - -static const char *drive_pinmux_name(int pg) -{ - if (pg < 0 || pg >= drive_max) - return "<UNKNOWN>"; - - return drive_pingroups[pg].name; -} - -static const char *enable_name(unsigned long val) -{ - return val ? "ENABLE" : "DISABLE"; -} - -static const char *drive_name(unsigned long val) -{ - if (val >= TEGRA_MAX_DRIVE) - return "<UNKNOWN>"; - - return tegra_drive_names[val]; -} - -static const char *slew_name(unsigned long val) -{ - if (val >= TEGRA_MAX_SLEW) - return "<UNKNOWN>"; - - return tegra_slew_names[val]; -} - -static int tegra_drive_pinmux_set_hsm(int pg, enum tegra_hsm hsm) -{ - unsigned long flags; - u32 reg; - if (pg < 0 || pg >= drive_max) - return -ERANGE; - - if (hsm != TEGRA_HSM_ENABLE && hsm != TEGRA_HSM_DISABLE) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - if (hsm == TEGRA_HSM_ENABLE) - reg |= (1 << 2); - else - reg &= ~(1 << 2); - pg_writel(reg, drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static int tegra_drive_pinmux_set_schmitt(int pg, enum tegra_schmitt schmitt) -{ - unsigned long flags; - u32 reg; - if (pg < 0 || pg >= drive_max) - return -ERANGE; - - if (schmitt != TEGRA_SCHMITT_ENABLE && schmitt != TEGRA_SCHMITT_DISABLE) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - if (schmitt == TEGRA_SCHMITT_ENABLE) - reg |= (1 << 3); - else - reg &= ~(1 << 3); - pg_writel(reg, drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static int tegra_drive_pinmux_set_drive(int pg, enum tegra_drive drive) -{ - unsigned long flags; - u32 reg; - if (pg < 0 || pg >= drive_max) - return -ERANGE; - - if (drive < 0 || drive >= TEGRA_MAX_DRIVE) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - reg &= ~(0x3 << 4); - reg |= drive << 4; - pg_writel(reg, drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static int tegra_drive_pinmux_set_pull_down(int pg, - enum tegra_pull_strength pull_down) -{ - unsigned long flags; - u32 reg; - if (pg < 0 || pg >= drive_max) - return -ERANGE; - - if (pull_down < 0 || pull_down >= TEGRA_MAX_PULL) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - reg &= ~(0x1f << 12); - reg |= pull_down << 12; - pg_writel(reg, drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static int tegra_drive_pinmux_set_pull_up(int pg, - enum tegra_pull_strength pull_up) -{ - unsigned long flags; - u32 reg; - if (pg < 0 || pg >= drive_max) - return -ERANGE; - - if (pull_up < 0 || pull_up >= TEGRA_MAX_PULL) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - reg &= ~(0x1f << 12); - reg |= pull_up << 12; - pg_writel(reg, drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static int tegra_drive_pinmux_set_slew_rising(int pg, - enum tegra_slew slew_rising) -{ - unsigned long flags; - u32 reg; - if (pg < 0 || pg >= drive_max) - return -ERANGE; - - if (slew_rising < 0 || slew_rising >= TEGRA_MAX_SLEW) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - reg &= ~(0x3 << 28); - reg |= slew_rising << 28; - pg_writel(reg, drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static int tegra_drive_pinmux_set_slew_falling(int pg, - enum tegra_slew slew_falling) -{ - unsigned long flags; - u32 reg; - if (pg < 0 || pg >= drive_max) - return -ERANGE; - - if (slew_falling < 0 || slew_falling >= TEGRA_MAX_SLEW) - return -EINVAL; - - spin_lock_irqsave(&mux_lock, flags); - - reg = pg_readl(drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - reg &= ~(0x3 << 30); - reg |= slew_falling << 30; - pg_writel(reg, drive_pingroups[pg].reg_bank, drive_pingroups[pg].reg); - - spin_unlock_irqrestore(&mux_lock, flags); - - return 0; -} - -static void tegra_drive_pinmux_config_pingroup(int pingroup, - enum tegra_hsm hsm, - enum tegra_schmitt schmitt, - enum tegra_drive drive, - enum tegra_pull_strength pull_down, - enum tegra_pull_strength pull_up, - enum tegra_slew slew_rising, - enum tegra_slew slew_falling) -{ - int err; - - err = tegra_drive_pinmux_set_hsm(pingroup, hsm); - if (err < 0) - pr_err("pinmux: can't set pingroup %s hsm to %s: %d\n", - drive_pinmux_name(pingroup), - enable_name(hsm), err); - - err = tegra_drive_pinmux_set_schmitt(pingroup, schmitt); - if (err < 0) - pr_err("pinmux: can't set pingroup %s schmitt to %s: %d\n", - drive_pinmux_name(pingroup), - enable_name(schmitt), err); - - err = tegra_drive_pinmux_set_drive(pingroup, drive); - if (err < 0) - pr_err("pinmux: can't set pingroup %s drive to %s: %d\n", - drive_pinmux_name(pingroup), - drive_name(drive), err); - - err = tegra_drive_pinmux_set_pull_down(pingroup, pull_down); - if (err < 0) - pr_err("pinmux: can't set pingroup %s pull down to %d: %d\n", - drive_pinmux_name(pingroup), - pull_down, err); - - err = tegra_drive_pinmux_set_pull_up(pingroup, pull_up); - if (err < 0) - pr_err("pinmux: can't set pingroup %s pull up to %d: %d\n", - drive_pinmux_name(pingroup), - pull_up, err); - - err = tegra_drive_pinmux_set_slew_rising(pingroup, slew_rising); - if (err < 0) - pr_err("pinmux: can't set pingroup %s rising slew to %s: %d\n", - drive_pinmux_name(pingroup), - slew_name(slew_rising), err); - - err = tegra_drive_pinmux_set_slew_falling(pingroup, slew_falling); - if (err < 0) - pr_err("pinmux: can't set pingroup %s falling slew to %s: %d\n", - drive_pinmux_name(pingroup), - slew_name(slew_falling), err); -} - -void tegra_drive_pinmux_config_table(struct tegra_drive_pingroup_config *config, - int len) -{ - int i; - - for (i = 0; i < len; i++) - tegra_drive_pinmux_config_pingroup(config[i].pingroup, - config[i].hsm, - config[i].schmitt, - config[i].drive, - config[i].pull_down, - config[i].pull_up, - config[i].slew_rising, - config[i].slew_falling); -} - -void tegra_pinmux_set_safe_pinmux_table(const struct tegra_pingroup_config *config, - int len) -{ - int i; - struct tegra_pingroup_config c; - - for (i = 0; i < len; i++) { - int err; - c = config[i]; - if (c.pingroup < 0 || c.pingroup >= pingroup_max) { - WARN_ON(1); - continue; - } - c.func = pingroups[c.pingroup].func_safe; - err = tegra_pinmux_set_func(&c); - if (err < 0) - pr_err("%s: tegra_pinmux_set_func returned %d setting " - "%s to %s\n", __func__, err, - pingroup_name(c.pingroup), func_name(c.func)); - } -} - -void tegra_pinmux_config_pinmux_table(const struct tegra_pingroup_config *config, - int len) -{ - int i; - - for (i = 0; i < len; i++) { - int err; - if (config[i].pingroup < 0 || - config[i].pingroup >= pingroup_max) { - WARN_ON(1); - continue; - } - err = tegra_pinmux_set_func(&config[i]); - if (err < 0) - pr_err("%s: tegra_pinmux_set_func returned %d setting " - "%s to %s\n", __func__, err, - pingroup_name(config[i].pingroup), - func_name(config[i].func)); - } -} - -void tegra_pinmux_config_tristate_table(const struct tegra_pingroup_config *config, - int len, enum tegra_tristate tristate) -{ - int i; - int err; - int pingroup; - - for (i = 0; i < len; i++) { - pingroup = config[i].pingroup; - if (pingroups[pingroup].tri_reg >= 0) { - err = tegra_pinmux_set_tristate(pingroup, tristate); - if (err < 0) - pr_err("pinmux: can't set pingroup %s tristate" - " to %s: %d\n", pingroup_name(pingroup), - tri_name(tristate), err); - } - } -} - -void tegra_pinmux_config_pullupdown_table(const struct tegra_pingroup_config *config, - int len, enum tegra_pullupdown pupd) -{ - int i; - int err; - int pingroup; - - for (i = 0; i < len; i++) { - pingroup = config[i].pingroup; - if (pingroups[pingroup].pupd_reg >= 0) { - err = tegra_pinmux_set_pullupdown(pingroup, pupd); - if (err < 0) - pr_err("pinmux: can't set pingroup %s pullupdown" - " to %s: %d\n", pingroup_name(pingroup), - pupd_name(pupd), err); - } - } -} - -static struct of_device_id tegra_pinmux_of_match[] __devinitdata = { -#ifdef CONFIG_ARCH_TEGRA_2x_SOC - { .compatible = "nvidia,tegra20-pinmux", tegra20_pinmux_init }, -#endif -#ifdef CONFIG_ARCH_TEGRA_3x_SOC - { .compatible = "nvidia,tegra30-pinmux", tegra30_pinmux_init }, -#endif - { }, -}; - -static int __devinit tegra_pinmux_probe(struct platform_device *pdev) -{ - struct resource *res; - int i; - int config_bad = 0; - const struct of_device_id *match; - - match = of_match_device(tegra_pinmux_of_match, &pdev->dev); - - if (match) - ((pinmux_init)(match->data))(&pingroups, &pingroup_max, - &drive_pingroups, &drive_max); -#ifdef CONFIG_ARCH_TEGRA_2x_SOC - else - /* no device tree available, so we must be on tegra20 */ - tegra20_pinmux_init(&pingroups, &pingroup_max, - &drive_pingroups, &drive_max); -#else - pr_warn("non Tegra20 platform requires pinmux devicetree node\n"); -#endif - - for (i = 0; ; i++) { - res = platform_get_resource(pdev, IORESOURCE_MEM, i); - if (!res) - break; - } - nbanks = i; - - for (i = 0; i < pingroup_max; i++) { - if (pingroups[i].tri_bank >= nbanks) { - dev_err(&pdev->dev, "pingroup %d: bad tri_bank\n", i); - config_bad = 1; - } - - if (pingroups[i].mux_bank >= nbanks) { - dev_err(&pdev->dev, "pingroup %d: bad mux_bank\n", i); - config_bad = 1; - } - - if (pingroups[i].pupd_bank >= nbanks) { - dev_err(&pdev->dev, "pingroup %d: bad pupd_bank\n", i); - config_bad = 1; - } - } - - for (i = 0; i < drive_max; i++) { - if (drive_pingroups[i].reg_bank >= nbanks) { - dev_err(&pdev->dev, - "drive pingroup %d: bad reg_bank\n", i); - config_bad = 1; - } - } - - if (config_bad) - return -ENODEV; - - regs = devm_kzalloc(&pdev->dev, nbanks * sizeof(*regs), GFP_KERNEL); - if (!regs) { - dev_err(&pdev->dev, "Can't alloc regs pointer\n"); - return -ENODEV; - } - - for (i = 0; i < nbanks; i++) { - res = platform_get_resource(pdev, IORESOURCE_MEM, i); - if (!res) { - dev_err(&pdev->dev, "Missing MEM resource\n"); - return -ENODEV; - } - - if (!devm_request_mem_region(&pdev->dev, res->start, - resource_size(res), - dev_name(&pdev->dev))) { - dev_err(&pdev->dev, - "Couldn't request MEM resource %d\n", i); - return -ENODEV; - } - - regs[i] = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); - if (!regs) { - dev_err(&pdev->dev, "Couldn't ioremap regs %d\n", i); - return -ENODEV; - } - } - - return 0; -} - -static struct platform_driver tegra_pinmux_driver = { - .driver = { - .name = "tegra-pinmux", - .owner = THIS_MODULE, - .of_match_table = tegra_pinmux_of_match, - }, - .probe = tegra_pinmux_probe, -}; - -static int __init tegra_pinmux_init(void) -{ - return platform_driver_register(&tegra_pinmux_driver); -} -postcore_initcall(tegra_pinmux_init); - -#ifdef CONFIG_DEBUG_FS - -#include <linux/debugfs.h> -#include <linux/seq_file.h> - -static void dbg_pad_field(struct seq_file *s, int len) -{ - seq_putc(s, ','); - - while (len-- > -1) - seq_putc(s, ' '); -} - -static int dbg_pinmux_show(struct seq_file *s, void *unused) -{ - int i; - int len; - - for (i = 0; i < pingroup_max; i++) { - unsigned long reg; - unsigned long tri; - unsigned long mux; - unsigned long pupd; - - seq_printf(s, "\t{TEGRA_PINGROUP_%s", pingroups[i].name); - len = strlen(pingroups[i].name); - dbg_pad_field(s, 5 - len); - - if (pingroups[i].mux_reg < 0) { - seq_printf(s, "TEGRA_MUX_NONE"); - len = strlen("NONE"); - } else { - reg = pg_readl(pingroups[i].mux_bank, - pingroups[i].mux_reg); - mux = (reg >> pingroups[i].mux_bit) & 0x3; - if (pingroups[i].funcs[mux] == TEGRA_MUX_RSVD) { - seq_printf(s, "TEGRA_MUX_RSVD%1lu", mux+1); - len = 5; - } else { - seq_printf(s, "TEGRA_MUX_%s", - tegra_mux_names[pingroups[i].funcs[mux]]); - len = strlen(tegra_mux_names[pingroups[i].funcs[mux]]); - } - } - dbg_pad_field(s, 13-len); - - if (pingroups[i].pupd_reg < 0) { - seq_printf(s, "TEGRA_PUPD_NORMAL"); - len = strlen("NORMAL"); - } else { - reg = pg_readl(pingroups[i].pupd_bank, - pingroups[i].pupd_reg); - pupd = (reg >> pingroups[i].pupd_bit) & 0x3; - seq_printf(s, "TEGRA_PUPD_%s", pupd_name(pupd)); - len = strlen(pupd_name(pupd)); - } - dbg_pad_field(s, 9 - len); - - if (pingroups[i].tri_reg < 0) { - seq_printf(s, "TEGRA_TRI_NORMAL"); - } else { - reg = pg_readl(pingroups[i].tri_bank, - pingroups[i].tri_reg); - tri = (reg >> pingroups[i].tri_bit) & 0x1; - - seq_printf(s, "TEGRA_TRI_%s", tri_name(tri)); - } - seq_printf(s, "},\n"); - } - return 0; -} - -static int dbg_pinmux_open(struct inode *inode, struct file *file) -{ - return single_open(file, dbg_pinmux_show, &inode->i_private); -} - -static const struct file_operations debug_fops = { - .open = dbg_pinmux_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int dbg_drive_pinmux_show(struct seq_file *s, void *unused) -{ - int i; - int len; - - for (i = 0; i < drive_max; i++) { - u32 reg; - - seq_printf(s, "\t{TEGRA_DRIVE_PINGROUP_%s", - drive_pingroups[i].name); - len = strlen(drive_pingroups[i].name); - dbg_pad_field(s, 7 - len); - - - reg = pg_readl(drive_pingroups[i].reg_bank, - drive_pingroups[i].reg); - if (HSM_EN(reg)) { - seq_printf(s, "TEGRA_HSM_ENABLE"); - len = 16; - } else { - seq_printf(s, "TEGRA_HSM_DISABLE"); - len = 17; - } - dbg_pad_field(s, 17 - len); - - if (SCHMT_EN(reg)) { - seq_printf(s, "TEGRA_SCHMITT_ENABLE"); - len = 21; - } else { - seq_printf(s, "TEGRA_SCHMITT_DISABLE"); - len = 22; - } - dbg_pad_field(s, 22 - len); - - seq_printf(s, "TEGRA_DRIVE_%s", drive_name(LPMD(reg))); - len = strlen(drive_name(LPMD(reg))); - dbg_pad_field(s, 5 - len); - - seq_printf(s, "TEGRA_PULL_%d", DRVDN(reg)); - len = DRVDN(reg) < 10 ? 1 : 2; - dbg_pad_field(s, 2 - len); - - seq_printf(s, "TEGRA_PULL_%d", DRVUP(reg)); - len = DRVUP(reg) < 10 ? 1 : 2; - dbg_pad_field(s, 2 - len); - - seq_printf(s, "TEGRA_SLEW_%s", slew_name(SLWR(reg))); - len = strlen(slew_name(SLWR(reg))); - dbg_pad_field(s, 7 - len); - - seq_printf(s, "TEGRA_SLEW_%s", slew_name(SLWF(reg))); - - seq_printf(s, "},\n"); - } - return 0; -} - -static int dbg_drive_pinmux_open(struct inode *inode, struct file *file) -{ - return single_open(file, dbg_drive_pinmux_show, &inode->i_private); -} - -static const struct file_operations debug_drive_fops = { - .open = dbg_drive_pinmux_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int __init tegra_pinmux_debuginit(void) -{ - (void) debugfs_create_file("tegra_pinmux", S_IRUGO, - NULL, NULL, &debug_fops); - (void) debugfs_create_file("tegra_pinmux_drive", S_IRUGO, - NULL, NULL, &debug_drive_fops); - return 0; -} -late_initcall(tegra_pinmux_debuginit); -#endif |
