diff mbox

[RFC,v5,2/9] gpio/crystalcove: Add additional GPIO for Panel control

Message ID 1426177893-17945-3-git-send-email-shobhit.kumar@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kumar, Shobhit March 12, 2015, 4:31 p.m. UTC
Export PANEL_EN/DISABLE (offset 0x52) as additional GPIO. Needed
by display driver to enable the DSI panel on BYT platform where
the Panel EN/Disable control is routed thorugh CRC PMIC

CC: Samuel Ortiz <sameo@linux.intel.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
---
 drivers/gpio/gpio-crystalcove.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Comments

Linus Walleij March 18, 2015, 11:54 a.m. UTC | #1
On Thu, Mar 12, 2015 at 5:31 PM, Shobhit Kumar <shobhit.kumar@intel.com> wrote:

> Export PANEL_EN/DISABLE (offset 0x52) as additional GPIO. Needed
> by display driver to enable the DSI panel on BYT platform where
> the Panel EN/Disable control is routed thorugh CRC PMIC
>
> CC: Samuel Ortiz <sameo@linux.intel.com>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: Alexandre Courbot <gnurou@gmail.com>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>

NACK.

Spawn a separate MFD cell and write a fixed voltage
regulator driver for this.

> @@ -39,6 +39,7 @@
>  #define GPIO0P0CTLI            0x33
>  #define GPIO1P0CTLO            0x3b
>  #define GPIO1P0CTLI            0x43
> +#define GPIOPANELCTL           0x52

This is even a lie, you say in the commit message that the
register is indeed named PANEL_EN/DISABLE and is not
a GPIO.

Yours,
Linus Walleij
Linus Walleij March 25, 2015, 2:51 p.m. UTC | #2
On Thu, Mar 12, 2015 at 5:31 PM, Shobhit Kumar <shobhit.kumar@intel.com> wrote:

> Export PANEL_EN/DISABLE (offset 0x52) as additional GPIO. Needed
> by display driver to enable the DSI panel on BYT platform where
> the Panel EN/Disable control is routed thorugh CRC PMIC
>
> CC: Samuel Ortiz <sameo@linux.intel.com>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: Alexandre Courbot <gnurou@gmail.com>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>

OK applied *this* version of the patch...

Yours,
Linus Walleij
diff mbox

Patch

diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c
index 3d9e08f..91a7ffe 100644
--- a/drivers/gpio/gpio-crystalcove.c
+++ b/drivers/gpio/gpio-crystalcove.c
@@ -24,7 +24,7 @@ 
 #include <linux/mfd/intel_soc_pmic.h>
 
 #define CRYSTALCOVE_GPIO_NUM	16
-#define CRYSTALCOVE_VGPIO_NUM	94
+#define CRYSTALCOVE_VGPIO_NUM	95
 
 #define UPDATE_IRQ_TYPE		BIT(0)
 #define UPDATE_IRQ_MASK		BIT(1)
@@ -39,6 +39,7 @@ 
 #define GPIO0P0CTLI		0x33
 #define GPIO1P0CTLO		0x3b
 #define GPIO1P0CTLI		0x43
+#define GPIOPANELCTL		0x52
 
 #define CTLI_INTCNT_DIS		(0)
 #define CTLI_INTCNT_NE		(1 << 1)
@@ -93,6 +94,10 @@  static inline int to_reg(int gpio, enum ctrl_register reg_type)
 {
 	int reg;
 
+	if (gpio == 94) {
+		return GPIOPANELCTL;
+	}
+
 	if (reg_type == CTRL_IN) {
 		if (gpio < 8)
 			reg = GPIO0P0CTLI;