[U-Boot] [PATCH v3 04/18] tegra: Add display support to funcmux

[Simon Glass]

Add support for a default pin mapping for display1.

Signed-off-by: Simon Glass <sjg at chromium.org>
---
Changes in v2:
- Use const where possible in funcmux

Changes in v3:
- Remove LPW1 pin which is not needed by display

 arch/arm/cpu/armv7/tegra2/funcmux.c |   38 +++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/arch/arm/cpu/armv7/tegra2/funcmux.c b/arch/arm/cpu/armv7/tegra2/funcmux.c
index 4a31a4c..3f4143f 100644
--- a/arch/arm/cpu/armv7/tegra2/funcmux.c
+++ b/arch/arm/cpu/armv7/tegra2/funcmux.c
@@ -25,6 +25,30 @@
 #include <asm/arch/funcmux.h>
 #include <asm/arch/pinmux.h>
 
+/*
+ * The PINMUX macro is used to set up pinmux tables.
+ */
+#define PINMUX(grp, mux, pupd, tri)                   \
+	{PINGRP_##grp, PMUX_FUNC_##mux, PMUX_PULL_##pupd, PMUX_TRI_##tri}
+
+static const struct pingroup_config disp1_default[] = {
+	PINMUX(LDI,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHP0,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHP1,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHP2,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHS,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(LM0,   RSVD4,      NORMAL,    NORMAL),
+	PINMUX(LPP,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(LPW0,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LPW2,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LSC0,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LSPI,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LVP1,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LVS,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(SLXD,  SPDIF,      NORMAL,    NORMAL),
+};
+
+
 int funcmux_select(enum periph_id id, int config)
 {
 	int bad_config = config != FUNCMUX_DEFAULT;
@@ -234,6 +258,20 @@ int funcmux_select(enum periph_id id, int config)
 		}
 		break;
 
+	case PERIPH_ID_DISP1:
+		if (config == FUNCMUX_DEFAULT) {
+			int i;
+
+			for (i = PINGRP_LD0; i <= PINGRP_LD17; i++) {
+				pinmux_set_func(i, PMUX_FUNC_DISPA);
+				pinmux_tristate_disable(i);
+				pinmux_set_pullupdown(i, PMUX_PULL_NORMAL);
+			}
+			pinmux_config_table(disp1_default,
+					    ARRAY_SIZE(disp1_default));
+		}
+		break;
+
 	default:
 		debug("%s: invalid periph_id %d", __func__, id);
 		return -1;
-- 
1.7.7.3