1 files changed, 527 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/pinmux-common.c b/arch/arm/mach-tegra/pinmux-common.c
new file mode 100644
index 0000000..6e3ab0c
--- /dev/null
+++ b/arch/arm/mach-tegra/pinmux-common.c
@@ -0,0 +1,527 @@
+/*
+ * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/pinmux.h>
+
+/* return 1 if a pingrp is in range */
+#define pmux_pingrp_isvalid(pin) (((pin) >= 0) && ((pin) < PMUX_PINGRP_COUNT))
+
+/* return 1 if a pmux_func is in range */
+#define pmux_func_isvalid(func) \
+	(((func) >= 0) && ((func) < PMUX_FUNC_COUNT))
+
+/* return 1 if a pin_pupd_is in range */
+#define pmux_pin_pupd_isvalid(pupd) \
+	(((pupd) >= PMUX_PULL_NORMAL) && ((pupd) <= PMUX_PULL_UP))
+
+/* return 1 if a pin_tristate_is in range */
+#define pmux_pin_tristate_isvalid(tristate) \
+	(((tristate) >= PMUX_TRI_NORMAL) && ((tristate) <= PMUX_TRI_TRISTATE))
+
+#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
+/* return 1 if a pin_io_is in range */
+#define pmux_pin_io_isvalid(io) \
+	(((io) >= PMUX_PIN_OUTPUT) && ((io) <= PMUX_PIN_INPUT))
+
+/* return 1 if a pin_lock is in range */
+#define pmux_pin_lock_isvalid(lock) \
+	(((lock) >= PMUX_PIN_LOCK_DISABLE) && ((lock) <= PMUX_PIN_LOCK_ENABLE))
+
+/* return 1 if a pin_od is in range */
+#define pmux_pin_od_isvalid(od) \
+	(((od) >= PMUX_PIN_OD_DISABLE) && ((od) <= PMUX_PIN_OD_ENABLE))
+
+/* return 1 if a pin_ioreset_is in range */
+#define pmux_pin_ioreset_isvalid(ioreset) \
+	(((ioreset) >= PMUX_PIN_IO_RESET_DISABLE) && \
+	 ((ioreset) <= PMUX_PIN_IO_RESET_ENABLE))
+
+#ifdef TEGRA_PMX_HAS_RCV_SEL
+/* return 1 if a pin_rcv_sel_is in range */
+#define pmux_pin_rcv_sel_isvalid(rcv_sel) \
+	(((rcv_sel) >= PMUX_PIN_RCV_SEL_NORMAL) && \
+	 ((rcv_sel) <= PMUX_PIN_RCV_SEL_HIGH))
+#endif /* TEGRA_PMX_HAS_RCV_SEL */
+#endif /* TEGRA_PMX_HAS_PIN_IO_BIT_ETC */
+
+#define _R(offset)	(u32 *)(NV_PA_APB_MISC_BASE + (offset))
+
+#if defined(CONFIG_TEGRA20)
+
+#define MUX_REG(grp)	_R(0x80 + ((tegra_soc_pingroups[grp].ctl_id / 16) * 4))
+#define MUX_SHIFT(grp)	((tegra_soc_pingroups[grp].ctl_id % 16) * 2)
+
+#define PULL_REG(grp)	_R(0xa0 + ((tegra_soc_pingroups[grp].pull_id / 16) * 4))
+#define PULL_SHIFT(grp)	((tegra_soc_pingroups[grp].pull_id % 16) * 2)
+
+#define TRI_REG(grp)	_R(0x14 + (((grp) / 32) * 4))
+#define TRI_SHIFT(grp)	((grp) % 32)
+
+#else
+
+#define REG(pin)	_R(0x3000 + ((pin) * 4))
+
+#define MUX_REG(pin)	REG(pin)
+#define MUX_SHIFT(pin)	0
+
+#define PULL_REG(pin)	REG(pin)
+#define PULL_SHIFT(pin)	2
+
+#define TRI_REG(pin)	REG(pin)
+#define TRI_SHIFT(pin)	4
+
+#endif /* CONFIG_TEGRA20 */
+
+#define DRV_REG(group)	_R(0x868 + ((group) * 4))
+
+#define IO_SHIFT	5
+#define OD_SHIFT	6
+#define LOCK_SHIFT	7
+#define IO_RESET_SHIFT	8
+#define RCV_SEL_SHIFT	9
+
+#if !defined(CONFIG_TEGRA20) && !defined(CONFIG_TEGRA30)
+/* This register/field only exists on Tegra114 and later */
+#define APB_MISC_PP_PINMUX_GLOBAL_0 0x40
+#define CLAMP_INPUTS_WHEN_TRISTATED 1
+
+void pinmux_set_tristate_input_clamping(void)
+{
+	u32 *reg = _R(APB_MISC_PP_PINMUX_GLOBAL_0);
+	u32 val;
+
+	val = readl(reg);
+	val |= CLAMP_INPUTS_WHEN_TRISTATED;
+	writel(val, reg);
+}
+#endif
+
+void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func)
+{
+	u32 *reg = MUX_REG(pin);
+	int i, mux = -1;
+	u32 val;
+
+	if (func == PMUX_FUNC_DEFAULT)
+		return;
+
+	/* Error check on pin and func */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_func_isvalid(func));
+
+	if (func >= PMUX_FUNC_RSVD1) {
+		mux = (func - PMUX_FUNC_RSVD1) & 3;
+	} else {
+		/* Search for the appropriate function */
+		for (i = 0; i < 4; i++) {
+			if (tegra_soc_pingroups[pin].funcs[i] == func) {
+				mux = i;
+				break;
+			}
+		}
+	}
+	assert(mux != -1);
+
+	val = readl(reg);
+	val &= ~(3 << MUX_SHIFT(pin));
+	val |= (mux << MUX_SHIFT(pin));
+	writel(val, reg);
+}
+
+void pinmux_set_pullupdown(enum pmux_pingrp pin, enum pmux_pull pupd)
+{
+	u32 *reg = PULL_REG(pin);
+	u32 val;
+
+	/* Error check on pin and pupd */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_pin_pupd_isvalid(pupd));
+
+	val = readl(reg);
+	val &= ~(3 << PULL_SHIFT(pin));
+	val |= (pupd << PULL_SHIFT(pin));
+	writel(val, reg);
+}
+
+static void pinmux_set_tristate(enum pmux_pingrp pin, int tri)
+{
+	u32 *reg = TRI_REG(pin);
+	u32 val;
+
+	/* Error check on pin */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_pin_tristate_isvalid(tri));
+
+	val = readl(reg);
+	if (tri == PMUX_TRI_TRISTATE)
+		val |= (1 << TRI_SHIFT(pin));
+	else
+		val &= ~(1 << TRI_SHIFT(pin));
+	writel(val, reg);
+}
+
+void pinmux_tristate_enable(enum pmux_pingrp pin)
+{
+	pinmux_set_tristate(pin, PMUX_TRI_TRISTATE);
+}
+
+void pinmux_tristate_disable(enum pmux_pingrp pin)
+{
+	pinmux_set_tristate(pin, PMUX_TRI_NORMAL);
+}
+
+#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
+void pinmux_set_io(enum pmux_pingrp pin, enum pmux_pin_io io)
+{
+	u32 *reg = REG(pin);
+	u32 val;
+
+	if (io == PMUX_PIN_NONE)
+		return;
+
+	/* Error check on pin and io */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_pin_io_isvalid(io));
+
+	val = readl(reg);
+	if (io == PMUX_PIN_INPUT)
+		val |= (io & 1) << IO_SHIFT;
+	else
+		val &= ~(1 << IO_SHIFT);
+	writel(val, reg);
+}
+
+static void pinmux_set_lock(enum pmux_pingrp pin, enum pmux_pin_lock lock)
+{
+	u32 *reg = REG(pin);
+	u32 val;
+
+	if (lock == PMUX_PIN_LOCK_DEFAULT)
+		return;
+
+	/* Error check on pin and lock */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_pin_lock_isvalid(lock));
+
+	val = readl(reg);
+	if (lock == PMUX_PIN_LOCK_ENABLE) {
+		val |= (1 << LOCK_SHIFT);
+	} else {
+		if (val & (1 << LOCK_SHIFT))
+			printf("%s: Cannot clear LOCK bit!\n", __func__);
+		val &= ~(1 << LOCK_SHIFT);
+	}
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_od(enum pmux_pingrp pin, enum pmux_pin_od od)
+{
+	u32 *reg = REG(pin);
+	u32 val;
+
+	if (od == PMUX_PIN_OD_DEFAULT)
+		return;
+
+	/* Error check on pin and od */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_pin_od_isvalid(od));
+
+	val = readl(reg);
+	if (od == PMUX_PIN_OD_ENABLE)
+		val |= (1 << OD_SHIFT);
+	else
+		val &= ~(1 << OD_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_ioreset(enum pmux_pingrp pin,
+				enum pmux_pin_ioreset ioreset)
+{
+	u32 *reg = REG(pin);
+	u32 val;
+
+	if (ioreset == PMUX_PIN_IO_RESET_DEFAULT)
+		return;
+
+	/* Error check on pin and ioreset */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_pin_ioreset_isvalid(ioreset));
+
+	val = readl(reg);
+	if (ioreset == PMUX_PIN_IO_RESET_ENABLE)
+		val |= (1 << IO_RESET_SHIFT);
+	else
+		val &= ~(1 << IO_RESET_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+#ifdef TEGRA_PMX_HAS_RCV_SEL
+static void pinmux_set_rcv_sel(enum pmux_pingrp pin,
+				enum pmux_pin_rcv_sel rcv_sel)
+{
+	u32 *reg = REG(pin);
+	u32 val;
+
+	if (rcv_sel == PMUX_PIN_RCV_SEL_DEFAULT)
+		return;
+
+	/* Error check on pin and rcv_sel */
+	assert(pmux_pingrp_isvalid(pin));
+	assert(pmux_pin_rcv_sel_isvalid(rcv_sel));
+
+	val = readl(reg);
+	if (rcv_sel == PMUX_PIN_RCV_SEL_HIGH)
+		val |= (1 << RCV_SEL_SHIFT);
+	else
+		val &= ~(1 << RCV_SEL_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+#endif /* TEGRA_PMX_HAS_RCV_SEL */
+#endif /* TEGRA_PMX_HAS_PIN_IO_BIT_ETC */
+
+static void pinmux_config_pingrp(const struct pmux_pingrp_config *config)
+{
+	enum pmux_pingrp pin = config->pingrp;
+
+	pinmux_set_func(pin, config->func);
+	pinmux_set_pullupdown(pin, config->pull);
+	pinmux_set_tristate(pin, config->tristate);
+#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
+	pinmux_set_io(pin, config->io);
+	pinmux_set_lock(pin, config->lock);
+	pinmux_set_od(pin, config->od);
+	pinmux_set_ioreset(pin, config->ioreset);
+#ifdef TEGRA_PMX_HAS_RCV_SEL
+	pinmux_set_rcv_sel(pin, config->rcv_sel);
+#endif
+#endif
+}
+
+void pinmux_config_pingrp_table(const struct pmux_pingrp_config *config,
+				int len)
+{
+	int i;
+
+	for (i = 0; i < len; i++)
+		pinmux_config_pingrp(&config[i]);
+}
+
+#ifdef TEGRA_PMX_HAS_DRVGRPS
+
+#define pmux_drvgrp_isvalid(pd) (((pd) >= 0) && ((pd) < PMUX_DRVGRP_COUNT))
+
+#define pmux_slw_isvalid(slw) \
+	(((slw) >= PMUX_SLWF_MIN) && ((slw) <= PMUX_SLWF_MAX))
+
+#define pmux_drv_isvalid(drv) \
+	(((drv) >= PMUX_DRVUP_MIN) && ((drv) <= PMUX_DRVUP_MAX))
+
+#define pmux_lpmd_isvalid(lpm) \
+	(((lpm) >= PMUX_LPMD_X8) && ((lpm) <= PMUX_LPMD_X))
+
+#define pmux_schmt_isvalid(schmt) \
+	(((schmt) >= PMUX_SCHMT_DISABLE) && ((schmt) <= PMUX_SCHMT_ENABLE))
+
+#define pmux_hsm_isvalid(hsm) \
+	(((hsm) >= PMUX_HSM_DISABLE) && ((hsm) <= PMUX_HSM_ENABLE))
+
+#define HSM_SHIFT	2
+#define SCHMT_SHIFT	3
+#define LPMD_SHIFT	4
+#define LPMD_MASK	(3 << LPMD_SHIFT)
+#define DRVDN_SHIFT	12
+#define DRVDN_MASK	(0x7F << DRVDN_SHIFT)
+#define DRVUP_SHIFT	20
+#define DRVUP_MASK	(0x7F << DRVUP_SHIFT)
+#define SLWR_SHIFT	28
+#define SLWR_MASK	(3 << SLWR_SHIFT)
+#define SLWF_SHIFT	30
+#define SLWF_MASK	(3 << SLWF_SHIFT)
+
+static void pinmux_set_drvup_slwf(enum pmux_drvgrp grp, int slwf)
+{
+	u32 *reg = DRV_REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (slwf == PMUX_SLWF_NONE)
+		return;
+
+	/* Error check on pad and slwf */
+	assert(pmux_drvgrp_isvalid(grp));
+	assert(pmux_slw_isvalid(slwf));
+
+	val = readl(reg);
+	val &= ~SLWF_MASK;
+	val |= (slwf << SLWF_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_drvdn_slwr(enum pmux_drvgrp grp, int slwr)
+{
+	u32 *reg = DRV_REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (slwr == PMUX_SLWR_NONE)
+		return;
+
+	/* Error check on pad and slwr */
+	assert(pmux_drvgrp_isvalid(grp));
+	assert(pmux_slw_isvalid(slwr));
+
+	val = readl(reg);
+	val &= ~SLWR_MASK;
+	val |= (slwr << SLWR_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_drvup(enum pmux_drvgrp grp, int drvup)
+{
+	u32 *reg = DRV_REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (drvup == PMUX_DRVUP_NONE)
+		return;
+
+	/* Error check on pad and drvup */
+	assert(pmux_drvgrp_isvalid(grp));
+	assert(pmux_drv_isvalid(drvup));
+
+	val = readl(reg);
+	val &= ~DRVUP_MASK;
+	val |= (drvup << DRVUP_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_drvdn(enum pmux_drvgrp grp, int drvdn)
+{
+	u32 *reg = DRV_REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (drvdn == PMUX_DRVDN_NONE)
+		return;
+
+	/* Error check on pad and drvdn */
+	assert(pmux_drvgrp_isvalid(grp));
+	assert(pmux_drv_isvalid(drvdn));
+
+	val = readl(reg);
+	val &= ~DRVDN_MASK;
+	val |= (drvdn << DRVDN_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_lpmd(enum pmux_drvgrp grp, enum pmux_lpmd lpmd)
+{
+	u32 *reg = DRV_REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (lpmd == PMUX_LPMD_NONE)
+		return;
+
+	/* Error check pad and lpmd value */
+	assert(pmux_drvgrp_isvalid(grp));
+	assert(pmux_lpmd_isvalid(lpmd));
+
+	val = readl(reg);
+	val &= ~LPMD_MASK;
+	val |= (lpmd << LPMD_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_schmt(enum pmux_drvgrp grp, enum pmux_schmt schmt)
+{
+	u32 *reg = DRV_REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (schmt == PMUX_SCHMT_NONE)
+		return;
+
+	/* Error check pad */
+	assert(pmux_drvgrp_isvalid(grp));
+	assert(pmux_schmt_isvalid(schmt));
+
+	val = readl(reg);
+	if (schmt == PMUX_SCHMT_ENABLE)
+		val |= (1 << SCHMT_SHIFT);
+	else
+		val &= ~(1 << SCHMT_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_set_hsm(enum pmux_drvgrp grp, enum pmux_hsm hsm)
+{
+	u32 *reg = DRV_REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (hsm == PMUX_HSM_NONE)
+		return;
+
+	/* Error check pad */
+	assert(pmux_drvgrp_isvalid(grp));
+	assert(pmux_hsm_isvalid(hsm));
+
+	val = readl(reg);
+	if (hsm == PMUX_HSM_ENABLE)
+		val |= (1 << HSM_SHIFT);
+	else
+		val &= ~(1 << HSM_SHIFT);
+	writel(val, reg);
+
+	return;
+}
+
+static void pinmux_config_drvgrp(const struct pmux_drvgrp_config *config)
+{
+	enum pmux_drvgrp grp = config->drvgrp;
+
+	pinmux_set_drvup_slwf(grp, config->slwf);
+	pinmux_set_drvdn_slwr(grp, config->slwr);
+	pinmux_set_drvup(grp, config->drvup);
+	pinmux_set_drvdn(grp, config->drvdn);
+	pinmux_set_lpmd(grp, config->lpmd);
+	pinmux_set_schmt(grp, config->schmt);
+	pinmux_set_hsm(grp, config->hsm);
+}
+
+void pinmux_config_drvgrp_table(const struct pmux_drvgrp_config *config,
+				int len)
+{
+	int i;
+
+	for (i = 0; i < len; i++)
+		pinmux_config_drvgrp(&config[i]);
+}
+#endif /* TEGRA_PMX_HAS_DRVGRPS */