[U-Boot] [PATCH V3 01/12] exynos4:pinmux:fdt: decode peripheral id

[Piotr Wilczek]

This patch adds api to decode peripheral id based on interrupt number.

Signed-off-by: Piotr Wilczek <p.wilc...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
CC: Minkyu Kang <mk7.k...@samsung.com>
---
Changes for v3:
 - none

Changes for v2:
 - removed incorrectly implemented check for invalid peripheral id
 - removed unnecesary white space

 arch/arm/cpu/armv7/exynos/pinmux.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c 
b/arch/arm/cpu/armv7/exynos/pinmux.c
index 645c497..8d6e5c1 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -741,6 +741,21 @@ int exynos_pinmux_config(int peripheral, int flags)
 }
 
 #ifdef CONFIG_OF_CONTROL
+static int exynos4_pinmux_decode_periph_id(const void *blob, int node)
+{
+       int err;
+       u32 cell[3];
+
+       err = fdtdec_get_int_array(blob, node, "interrupts", cell,
+                                       ARRAY_SIZE(cell));
+       if (err) {
+               debug(" invalid peripheral id\n");
+               return PERIPH_ID_NONE;
+       }
+
+       return cell[1];
+}
+
 static int exynos5_pinmux_decode_periph_id(const void *blob, int node)
 {
        int err;
@@ -758,6 +773,8 @@ int pinmux_decode_periph_id(const void *blob, int node)
 {
        if (cpu_is_exynos5())
                return  exynos5_pinmux_decode_periph_id(blob, node);
+       else if (cpu_is_exynos4())
+               return  exynos4_pinmux_decode_periph_id(blob, node);
        else
                return PERIPH_ID_NONE;
 }
-- 
1.8.3.2

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