linux-kernel - Re: [PATCH] imx27: pinctrl: fix wrong offset to ICONFB

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Message-ID: <52DF2963.7000608@gtsys.com.hk>
Date:	Wed, 22 Jan 2014 10:13:55 +0800
From:	Chris Ruehl <chris.ruehl@...ys.com.hk>
To:	Markus Pargmann <mpa@...gutronix.de>
CC:	linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
	linux-arm@...ts.infradead.org
Subject: Re: [PATCH] imx27: pinctrl: fix wrong offset to ICONFB

Hi Markus,

On Tuesday, January 21, 2014 06:24 PM, Markus Pargmann wrote:
> Hi,
>
> On Thu, Jan 16, 2014 at 09:18:23AM +0800, Chris Ruehl wrote:
>> The offset to ICONFB was incorrect, this patch set the correct value 0x14.
>> dev_dbg in function imx1_write_2bit print the wrong address and had been
>> moved after address calculation.
>>
>> Signed-off-by: Chris Ruehl <chris.ruehl@...ys.com.hk>
>
> Reviewed-by: Markus Pargmann <mpa@...gutronix.de>
>
> Perhaps this should go to the stable tree too for 3.13 and 3.14?

Yes of cause, and I have one more, the offset in

@@ -139,7 +139,7 @@ static int imx1_read_2bit(struct imx1_pinctrl *ipctl, 
unsigned int pin_id,
                 u32 reg_offset)
  {
         void __iomem *reg = imx1_mem(ipctl, pin_id) + reg_offset;
-       int offset = pin_id % 16;
+       int offset = (pin_id % 16) * 2;

         /* Use the next register if the pin's port pin number is >=16 */
         if (pin_id % 32 >= 16)

should fixed, otherwise the printout of 
/sys/kernel/debug/pinctrl/10015000.iomuxc/pins show prints the wrong confo / 
iconfa / iconfb

I prepare a patch.

With kind regards,
Chris

>
> Regards,
>
> Markus
>
>> ---
>>   drivers/pinctrl/pinctrl-imx1-core.c |    8 ++++----
>>   1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/pinctrl/pinctrl-imx1-core.c b/drivers/pinctrl/pinctrl-imx1-core.c
>> index f77914a..8dfc3dc 100644
>> --- a/drivers/pinctrl/pinctrl-imx1-core.c
>> +++ b/drivers/pinctrl/pinctrl-imx1-core.c
>> @@ -45,7 +45,7 @@ struct imx1_pinctrl {
>>   #define MX1_DDIR 0x00
>>   #define MX1_OCR 0x04
>>   #define MX1_ICONFA 0x0c
>> -#define MX1_ICONFB 0x10
>> +#define MX1_ICONFB 0x14
>>   #define MX1_GIUS 0x20
>>   #define MX1_GPR 0x38
>>   #define MX1_PUEN 0x40
>> @@ -97,13 +97,13 @@ static void imx1_write_2bit(struct imx1_pinctrl *ipctl, unsigned int pin_id,
>>   	u32 old_val;
>>   	u32 new_val;
>>
>> -	dev_dbg(ipctl->dev, "write: register 0x%p offset %d value 0x%x\n",
>> -			reg, offset, value);
>> -
>>   	/* Use the next register if the pin's port pin number is >=16 */
>>   	if (pin_id % 32 >= 16)
>>   		reg += 0x04;
>>
>> +	dev_dbg(ipctl->dev, "write: register 0x%p offset %d value 0x%x\n",
>> +			reg, offset, value);
>> +
>>   	/* Get current state of pins */
>>   	old_val = readl(reg);
>>   	old_val &= mask;
>> --
>> 1.7.10.4
>>
>>
>

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