diff mbox

gpio: bcm281xx: Fix parameter name for GPIO_CONTROL macro

Message ID 1390349404-23326-1-git-send-email-markus.mayer@linaro.org
State Accepted
Commit d762bae45a3dd65d02a35b4252598912f7fbcde0
Headers show

Commit Message

Markus Mayer Jan. 22, 2014, 12:10 a.m. UTC 
The GPIO_CONTROL macro returns the control register offset when given a
GPIO number.

Update the argument name in the macro to reflect that it takes in a
GPIO number and not a bank.

Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
---
 drivers/gpio/gpio-bcm-kona.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Linus Walleij Jan. 23, 2014, 8:20 a.m. UTC | #1 
On Wed, Jan 22, 2014 at 1:10 AM, Markus Mayer <markus.mayer@linaro.org> wrote:

> The GPIO_CONTROL macro returns the control register offset when given a
> GPIO number.
>
> Update the argument name in the macro to reflect that it takes in a
> GPIO number and not a bank.
>
> Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
> Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
(...)
> +/* There is a GPIO control register for each GPIO */
> +#define GPIO_CONTROL(gpio)                     (0x00000100 + ((gpio) << 2))

Technically I prefer naming this parameter "offset" rather than
"gpio" as it is the offset of a GPIO line in *this* very GPIO
HW block rather than a GPIO number from the global
GPIO number space.

But it's no big deal, so patch applied.

Yours,
Linus Walleij
diff mbox

Patch

diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c
index 233d088..93a5b01 100644
--- a/drivers/gpio/gpio-bcm-kona.c
+++ b/drivers/gpio/gpio-bcm-kona.c
@@ -28,6 +28,10 @@ 
 #define GPIO_BANK(gpio)				((gpio) >> 5)
 #define GPIO_BIT(gpio)				((gpio) & (GPIO_PER_BANK - 1))
 
+/* There is a GPIO control register for each GPIO */
+#define GPIO_CONTROL(gpio)			(0x00000100 + ((gpio) << 2))
+
+/* The remaining registers are per GPIO bank */
 #define GPIO_OUT_STATUS(bank)			(0x00000000 + ((bank) << 2))
 #define GPIO_IN_STATUS(bank)			(0x00000020 + ((bank) << 2))
 #define GPIO_OUT_SET(bank)			(0x00000040 + ((bank) << 2))
@@ -35,7 +39,6 @@ 
 #define GPIO_INT_STATUS(bank)			(0x00000080 + ((bank) << 2))
 #define GPIO_INT_MASK(bank)			(0x000000a0 + ((bank) << 2))
 #define GPIO_INT_MSKCLR(bank)			(0x000000c0 + ((bank) << 2))
-#define GPIO_CONTROL(bank)			(0x00000100 + ((bank) << 2))
 #define GPIO_PWD_STATUS(bank)			(0x00000500 + ((bank) << 2))
 
 #define GPIO_GPPWR_OFFSET			0x00000520