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authorSimon Glass <sjg@chromium.org>2012-01-11 12:42:23 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-02-12 10:11:22 +0100
commit2faf1863de7a69c3bc687ce8dba78d29bb821082 (patch)
treeda4a614bfc10d8baed35cc41537993d37415db45
parentd693969daa961d77c9f68e6868866509522eeb97 (diff)
tegra: Add enum to select from available funcmux configs
We want to give a name to each available funcmux config. For now we just use the pin group names (even through it is verbose) since there seems to be nothing better. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
-rw-r--r--arch/arm/cpu/armv7/tegra2/board.c2
-rw-r--r--arch/arm/cpu/armv7/tegra2/funcmux.c9
-rw-r--r--arch/arm/include/asm/arch-tegra2/funcmux.h12
3 files changed, 17 insertions, 6 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/board.c b/arch/arm/cpu/armv7/tegra2/board.c
index 404d34c230a..8e28d08247d 100644
--- a/arch/arm/cpu/armv7/tegra2/board.c
+++ b/arch/arm/cpu/armv7/tegra2/board.c
@@ -120,7 +120,7 @@ static void setup_uarts(int uart_ids)
if (uart_ids & (1 << i)) {
enum periph_id id = id_for_uart[i];
- funcmux_select(id, 0);
+ funcmux_select(id, FUNCMUX_DEFAULT);
clock_ll_start_uart(id);
}
}
diff --git a/arch/arm/cpu/armv7/tegra2/funcmux.c b/arch/arm/cpu/armv7/tegra2/funcmux.c
index d3496c535a3..662ce928c48 100644
--- a/arch/arm/cpu/armv7/tegra2/funcmux.c
+++ b/arch/arm/cpu/armv7/tegra2/funcmux.c
@@ -22,15 +22,16 @@
/* Tegra2 high-level function multiplexing */
#include <common.h>
#include <asm/arch/clock.h>
+#include <asm/arch/funcmux.h>
#include <asm/arch/pinmux.h>
int funcmux_select(enum periph_id id, int config)
{
- int bad_config = config != 0;
+ int bad_config = config != FUNCMUX_DEFAULT;
switch (id) {
case PERIPH_ID_UART1:
- if (config == 0) {
+ if (config == FUNCMUX_UART1_IRRX_IRTX) {
pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA);
pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA);
pinmux_tristate_disable(PINGRP_IRRX);
@@ -52,14 +53,14 @@ int funcmux_select(enum periph_id id, int config)
break;
case PERIPH_ID_UART2:
- if (config == 0) {
+ if (config == FUNCMUX_UART2_IRDA) {
pinmux_set_func(PINGRP_UAD, PMUX_FUNC_IRDA);
pinmux_tristate_disable(PINGRP_UAD);
}
break;
case PERIPH_ID_UART4:
- if (config == 0) {
+ if (config == FUNCMUX_UART4_GMC) {
pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD);
pinmux_tristate_disable(PINGRP_GMC);
}
diff --git a/arch/arm/include/asm/arch-tegra2/funcmux.h b/arch/arm/include/asm/arch-tegra2/funcmux.h
index d4f9cfbd065..791f3011c1f 100644
--- a/arch/arm/include/asm/arch-tegra2/funcmux.h
+++ b/arch/arm/include/asm/arch-tegra2/funcmux.h
@@ -24,6 +24,16 @@
#ifndef __FUNCMUX_H
#define __FUNCMUX_H
+/* Configs supported by the func mux */
+enum {
+ FUNCMUX_DEFAULT = 0, /* default config */
+
+ /* UART configs */
+ FUNCMUX_UART1_IRRX_IRTX = 0,
+ FUNCMUX_UART2_IRDA = 0,
+ FUNCMUX_UART4_GMC = 0,
+};
+
/**
* Select a config for a particular peripheral.
*
@@ -36,7 +46,7 @@
* so that they operate in normal mode.
*
* @param id Peripheral id
- * @param config Configuration to use (generally 0)
+ * @param config Configuration to use (FUNCMUX_...), 0 for default
* @return 0 if ok, -1 on error (e.g. incorrect id or config)
*/
int funcmux_select(enum periph_id id, int config);