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authorGeert Uytterhoeven <geert+renesas@glider.be>2015-03-18 19:41:08 +0100
committerLinus Walleij <linus.walleij@linaro.org>2015-03-26 10:19:10 +0100
commit3dc1e6852115b3163e7dacc76bbcb78ccff29421 (patch)
tree9e8837db1eeb22ce42bb33e61c890be8381b1c09
parent4d84b9e4957589730d13d210e9e94bb5f5996ba3 (diff)
downloadop-kernel-dev-3dc1e6852115b3163e7dacc76bbcb78ccff29421.zip
op-kernel-dev-3dc1e6852115b3163e7dacc76bbcb78ccff29421.tar.gz
gpio: rcar: Add more register documentation
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpio-rcar.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index e67d578..d96166c 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -39,18 +39,18 @@ struct gpio_rcar_priv {
struct irq_chip irq_chip;
};
-#define IOINTSEL 0x00
-#define INOUTSEL 0x04
-#define OUTDT 0x08
-#define INDT 0x0c
-#define INTDT 0x10
-#define INTCLR 0x14
-#define INTMSK 0x18
-#define MSKCLR 0x1c
-#define POSNEG 0x20
-#define EDGLEVEL 0x24
-#define FILONOFF 0x28
-#define BOTHEDGE 0x4c
+#define IOINTSEL 0x00 /* General IO/Interrupt Switching Register */
+#define INOUTSEL 0x04 /* General Input/Output Switching Register */
+#define OUTDT 0x08 /* General Output Register */
+#define INDT 0x0c /* General Input Register */
+#define INTDT 0x10 /* Interrupt Display Register */
+#define INTCLR 0x14 /* Interrupt Clear Register */
+#define INTMSK 0x18 /* Interrupt Mask Register */
+#define MSKCLR 0x1c /* Interrupt Mask Clear Register */
+#define POSNEG 0x20 /* Positive/Negative Logic Select Register */
+#define EDGLEVEL 0x24 /* Edge/level Select Register */
+#define FILONOFF 0x28 /* Chattering Prevention On/Off Register */
+#define BOTHEDGE 0x4c /* One Edge/Both Edge Select Register */
#define RCAR_MAX_GPIO_PER_BANK 32
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