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-rw-r--r--arch/arm/mach-tegra/pinmux.c825
1 files changed, 825 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/pinmux.c b/arch/arm/mach-tegra/pinmux.c
new file mode 100644
index 00000000000..f80d507671b
--- /dev/null
+++ b/arch/arm/mach-tegra/pinmux.c
@@ -0,0 +1,825 @@
+/*
+ * 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 <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 *const pingroups = tegra_soc_pingroups;
+static const struct tegra_drive_pingroup_desc *const drive_pingroups = tegra_soc_drive_pingroups;
+
+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_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(enum tegra_pingroup pg)
+{
+ if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ 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 inline unsigned long pg_readl(unsigned long offset)
+{
+ return readl(IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset));
+}
+
+static inline void pg_writel(unsigned long value, unsigned long offset)
+{
+ writel(value, IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset));
+}
+
+static int tegra_pinmux_set_func(const struct tegra_pingroup_config *config)
+{
+ int mux = -1;
+ int i;
+ unsigned long reg;
+ unsigned long flags;
+ enum tegra_pingroup pg = config->pingroup;
+ enum tegra_mux_func func = config->func;
+
+ if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ 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_reg);
+ reg &= ~(0x3 << pingroups[pg].mux_bit);
+ reg |= mux << pingroups[pg].mux_bit;
+ pg_writel(reg, pingroups[pg].mux_reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+int tegra_pinmux_set_tristate(enum tegra_pingroup pg,
+ enum tegra_tristate tristate)
+{
+ unsigned long reg;
+ unsigned long flags;
+
+ if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ return -ERANGE;
+
+ if (pingroups[pg].tri_reg < 0)
+ return -EINVAL;
+
+ spin_lock_irqsave(&mux_lock, flags);
+
+ reg = pg_readl(pingroups[pg].tri_reg);
+ reg &= ~(0x1 << pingroups[pg].tri_bit);
+ if (tristate)
+ reg |= 1 << pingroups[pg].tri_bit;
+ pg_writel(reg, pingroups[pg].tri_reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+int tegra_pinmux_set_pullupdown(enum tegra_pingroup pg,
+ enum tegra_pullupdown pupd)
+{
+ unsigned long reg;
+ unsigned long flags;
+
+ if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ 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_reg);
+ reg &= ~(0x3 << pingroups[pg].pupd_bit);
+ reg |= pupd << pingroups[pg].pupd_bit;
+ pg_writel(reg, pingroups[pg].pupd_reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static void tegra_pinmux_config_pingroup(const struct tegra_pingroup_config *config)
+{
+ enum tegra_pingroup 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(enum tegra_drive_pingroup pg)
+{
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ 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(enum tegra_drive_pingroup pg,
+ enum tegra_hsm hsm)
+{
+ unsigned long flags;
+ u32 reg;
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ 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);
+ if (hsm == TEGRA_HSM_ENABLE)
+ reg |= (1 << 2);
+ else
+ reg &= ~(1 << 2);
+ pg_writel(reg, drive_pingroups[pg].reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static int tegra_drive_pinmux_set_schmitt(enum tegra_drive_pingroup pg,
+ enum tegra_schmitt schmitt)
+{
+ unsigned long flags;
+ u32 reg;
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ 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);
+ if (schmitt == TEGRA_SCHMITT_ENABLE)
+ reg |= (1 << 3);
+ else
+ reg &= ~(1 << 3);
+ pg_writel(reg, drive_pingroups[pg].reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static int tegra_drive_pinmux_set_drive(enum tegra_drive_pingroup pg,
+ enum tegra_drive drive)
+{
+ unsigned long flags;
+ u32 reg;
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ return -ERANGE;
+
+ if (drive < 0 || drive >= TEGRA_MAX_DRIVE)
+ return -EINVAL;
+
+ spin_lock_irqsave(&mux_lock, flags);
+
+ reg = pg_readl(drive_pingroups[pg].reg);
+ reg &= ~(0x3 << 4);
+ reg |= drive << 4;
+ pg_writel(reg, drive_pingroups[pg].reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static int tegra_drive_pinmux_set_pull_down(enum tegra_drive_pingroup pg,
+ enum tegra_pull_strength pull_down)
+{
+ unsigned long flags;
+ u32 reg;
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ 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);
+ reg &= ~(0x1f << 12);
+ reg |= pull_down << 12;
+ pg_writel(reg, drive_pingroups[pg].reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static int tegra_drive_pinmux_set_pull_up(enum tegra_drive_pingroup pg,
+ enum tegra_pull_strength pull_up)
+{
+ unsigned long flags;
+ u32 reg;
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ 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);
+ reg &= ~(0x1f << 12);
+ reg |= pull_up << 12;
+ pg_writel(reg, drive_pingroups[pg].reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static int tegra_drive_pinmux_set_slew_rising(enum tegra_drive_pingroup pg,
+ enum tegra_slew slew_rising)
+{
+ unsigned long flags;
+ u32 reg;
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ 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);
+ reg &= ~(0x3 << 28);
+ reg |= slew_rising << 28;
+ pg_writel(reg, drive_pingroups[pg].reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static int tegra_drive_pinmux_set_slew_falling(enum tegra_drive_pingroup pg,
+ enum tegra_slew slew_falling)
+{
+ unsigned long flags;
+ u32 reg;
+ if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ 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);
+ reg &= ~(0x3 << 30);
+ reg |= slew_falling << 30;
+ pg_writel(reg, drive_pingroups[pg].reg);
+
+ spin_unlock_irqrestore(&mux_lock, flags);
+
+ return 0;
+}
+
+static void tegra_drive_pinmux_config_pingroup(enum tegra_drive_pingroup 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 >= TEGRA_MAX_PINGROUP) {
+ 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 >= TEGRA_MAX_PINGROUP) {
+ 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;
+ enum tegra_pingroup 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;
+ enum tegra_pingroup 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);
+ }
+ }
+}
+
+#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 < TEGRA_MAX_PINGROUP; i++) {
+ 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 {
+ mux = (pg_readl(pingroups[i].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 {
+ pupd = (pg_readl(pingroups[i].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 {
+ tri = (pg_readl(pingroups[i].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 < TEGRA_MAX_DRIVE_PINGROUP; 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);
+ 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
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 01:55:58 +0000