From mboxrd@z Thu Jan  1 00:00:00 1970
From: blogic@openwrt.org (John Crispin)
Date: Mon, 1 Feb 2016 09:25:32 +0100
Subject: [PATCH V4 09/11] soc: mediatek: PMIC wrap: add a slave specific
 struct
In-Reply-To: <1453948660.29651.3.camel@mtksdaap41>
References: <1453894149-44127-1-git-send-email-blogic@openwrt.org>
 <1453894149-44127-9-git-send-email-blogic@openwrt.org>
 <1453948660.29651.3.camel@mtksdaap41>
Message-ID: <56AF167C.5030501@openwrt.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org



On 28/01/2016 03:37, Henry Chen wrote:
> Hi John,
> 
> On Wed, 2016-01-27 at 12:29 +0100, John Crispin wrote:
> 
>> @@ -746,7 +786,7 @@ static int pwrap_init(struct pmic_wrapper *wrp)
>>  	pwrap_writel(wrp, 1, PWRAP_DIO_EN);
>>  
>>  	/* Read Test */
>> -	pwrap_read(wrp, PWRAP_DEW_READ_TEST, &rdata);
>> +	pwrap_dew_read(wrp, PWRAP_DEW_READ_TEST, &rdata);
>>  	if (rdata != PWRAP_DEW_READ_TEST_VAL) {
>>  		dev_err(wrp->dev, "Read test failed after switch to DIO mode: 0x%04x != 0x%04x\n",
>>  				PWRAP_DEW_READ_TEST_VAL, rdata);
>> @@ -759,12 +799,13 @@ static int pwrap_init(struct pmic_wrapper *wrp)
>>  		return ret;
>>  
>>  	/* Signature checking - using CRC */
>> -	if (pwrap_write(wrp, PWRAP_DEW_CRC_EN, 0x1))
>> +	if (pwrap_dew_write(wrp, PWRAP_DEW_CRC_EN, 0x1))
>>  		return -EFAULT;
>>  
>>  	pwrap_writel(wrp, 0x1, PWRAP_CRC_EN);
>>  	pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE);
>> -	pwrap_writel(wrp, PWRAP_DEW_CRC_VAL, PWRAP_SIG_ADR);
>> +	pwrap_writel(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL],
>> +		     PWRAP_SIG_ADR);
> 
> It should be "pwrap_dew_write(wrp, PWRAP_DEW_CRC_VAL, PWRAP_SIG_ADR);",
> right?
> 
> Henry
> 

Hi Henry,

i stumbled across this aswell. however this DEW access is direct using
pwrap_writel() and not indirect pwrap_write(). hence this is correct.
the DEW wrapper only exists for pwrap_write() style access. this might
have been a bug in the original commit.

this patch however keeps the functionality as is.

	John