[U-Boot] [PATCH 6/9] ARM: tegra: pinmux: support hsm/schmitt on pins

[Stephen Warren]

From: Stephen Warren <swarren at nvidia.com>

T210 support HSM and Schmitt options in the pinmux register (previous
chips placed these options in the drive group register). Update the
code to handle this.

Signed-off-by: Stephen Warren <swarren at nvidia.com>
---
 arch/arm/cpu/tegra-common/pinmux-common.c | 66 ++++++++++++++++++++++++++++++-
 arch/arm/include/asm/arch-tegra/pinmux.h  | 10 ++++-
 2 files changed, 72 insertions(+), 4 deletions(-)

diff --git a/arch/arm/cpu/tegra-common/pinmux-common.c b/arch/arm/cpu/tegra-common/pinmux-common.c
index 1730d20312b0..b4ed153a2e32 100644
--- a/arch/arm/cpu/tegra-common/pinmux-common.c
+++ b/arch/arm/cpu/tegra-common/pinmux-common.c
@@ -61,12 +61,12 @@
 	(((lpm) >= PMUX_LPMD_X8) && ((lpm) <= PMUX_LPMD_X))
 #endif
 
-#ifdef TEGRA_PMX_GRPS_HAVE_SCHMT
+#if defined(TEGRA_PMX_PINS_HAVE_SCHMT) || defined(TEGRA_PMX_GRPS_HAVE_SCHMT)
 #define pmux_schmt_isvalid(schmt) \
 	(((schmt) >= PMUX_SCHMT_DISABLE) && ((schmt) <= PMUX_SCHMT_ENABLE))
 #endif
 
-#ifdef TEGRA_PMX_GRPS_HAVE_HSM
+#if defined(TEGRA_PMX_PINS_HAVE_HSM) || defined(TEGRA_PMX_GRPS_HAVE_HSM)
 #define pmux_hsm_isvalid(hsm) \
 	(((hsm) >= PMUX_HSM_DISABLE) && ((hsm) <= PMUX_HSM_ENABLE))
 #endif
@@ -110,7 +110,13 @@
 #ifdef CONFIG_TEGRA210
 #define IO_SHIFT	6
 #define LOCK_SHIFT	7
+#ifdef TEGRA_PMX_PINS_HAVE_HSM
+#define HSM_SHIFT	9
+#endif
 #define OD_SHIFT	11
+#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
+#define SCHMT_SHIFT	12
+#endif
 #else
 #define IO_SHIFT	5
 #define OD_SHIFT	6
@@ -336,6 +342,56 @@ static void pinmux_set_rcv_sel(enum pmux_pingrp pin,
 }
 #endif
 
+#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
+static void pinmux_set_schmt(enum pmux_pingrp pin, enum pmux_schmt schmt)
+{
+	u32 *reg = REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (schmt == PMUX_SCHMT_NONE)
+		return;
+
+	/* Error check pad */
+	assert(pmux_pingrp_isvalid(pin));
+	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;
+}
+#endif
+
+#ifdef TEGRA_PMX_PINS_HAVE_HSM
+static void pinmux_set_hsm(enum pmux_pingrp pin, enum pmux_hsm hsm)
+{
+	u32 *reg = REG(grp);
+	u32 val;
+
+	/* NONE means unspecified/do not change/use POR value */
+	if (hsm == PMUX_HSM_NONE)
+		return;
+
+	/* Error check pad */
+	assert(pmux_pingrp_isvalid(pin));
+	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;
+}
+#endif
+
 static void pinmux_config_pingrp(const struct pmux_pingrp_config *config)
 {
 	enum pmux_pingrp pin = config->pingrp;
@@ -358,6 +414,12 @@ static void pinmux_config_pingrp(const struct pmux_pingrp_config *config)
 #ifdef TEGRA_PMX_PINS_HAVE_RCV_SEL
 	pinmux_set_rcv_sel(pin, config->rcv_sel);
 #endif
+#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
+	pinmux_set_schmt(pin, config->schmt);
+#endif
+#ifdef TEGRA_PMX_PINS_HAVE_HSM
+	pinmux_set_hsm(pin, config->hsm);
+#endif
 }
 
 void pinmux_config_pingrp_table(const struct pmux_pingrp_config *config,
diff --git a/arch/arm/include/asm/arch-tegra/pinmux.h b/arch/arm/include/asm/arch-tegra/pinmux.h
index 1562fa410c42..d87da10e0d7d 100644
--- a/arch/arm/include/asm/arch-tegra/pinmux.h
+++ b/arch/arm/include/asm/arch-tegra/pinmux.h
@@ -74,7 +74,7 @@ enum pmux_lpmd {
 };
 #endif
 
-#ifdef TEGRA_PMX_GRPS_HAVE_SCHMT
+#if defined(TEGRA_PMX_PINS_HAVE_SCHMT) || defined(TEGRA_PMX_GRPS_HAVE_SCHMT)
 /* Defines whether a pin group cfg's schmidt is enabled or not */
 enum pmux_schmt {
 	PMUX_SCHMT_DISABLE = 0,
@@ -83,7 +83,7 @@ enum pmux_schmt {
 };
 #endif
 
-#ifdef TEGRA_PMX_GRPS_HAVE_HSM
+#if defined(TEGRA_PMX_PINS_HAVE_HSM) || defined(TEGRA_PMX_GRPS_HAVE_HSM)
 /* Defines whether a pin group cfg's high-speed mode is enabled or not */
 enum pmux_hsm {
 	PMUX_HSM_DISABLE = 0,
@@ -119,6 +119,12 @@ struct pmux_pingrp_config {
 	u32 rcv_sel:2;		/* select between High and Normal  */
 				/* VIL/VIH receivers */
 #endif
+#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
+	u32 schmt:2;		/* schmitt enable            */
+#endif
+#ifdef TEGRA_PMX_PINS_HAVE_HSM
+	u32 hsm:2;		/* high-speed mode enable    */
+#endif
 };
 
 #ifdef TEGRA_PMX_SOC_HAS_IO_CLAMPING
-- 
1.9.1