linux-kernel - Re: [PATCH v2 2/3] mfd: rtsx: add card reader rtl8402

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Date:	Tue, 3 Dec 2013 19:02:21 +0800
From:	micky <micky_ching@...lsil.com.cn>
To:	Lee Jones <lee.jones@...aro.org>
CC:	<sameo@...ux.intel.com>, <devel@...uxdriverproject.org>,
	<linux-kernel@...r.kernel.org>, <gregkh@...uxfoundation.org>,
	<wei_wang@...lsil.com.cn>, <rogerable@...ltek.com>
Subject: Re: [PATCH v2 2/3] mfd: rtsx: add card reader rtl8402

On 12/03/2013 06:45 PM, Lee Jones wrote:
>> From: Micky Ching<micky_ching@...lsil.com.cn>
>>
>> Add card reader rtl8042, rtl8402 is much like rtl8411, so just add it to
>> rtl8411.c
>>
>> Signed-off-by: Lee Jones<lee.jones@...aro.org>
> I have never signed this patch off.
>
> These tags actually 'mean' something. Please don't apply them willy-nilly!
ok, I will remove it.
>> Signed-off-by: Micky Ching<micky_ching@...lsil.com.cn>
>> ---
>>   drivers/mfd/rtl8411.c  |   33 +++++++++++++++++++++++++++++++++
>>   drivers/mfd/rtsx_pcr.c |    5 +++++
>>   drivers/mfd/rtsx_pcr.h |    1 +
>>   3 files changed, 39 insertions(+)
>>
>> diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c
>> index c9eab9d..4b377e3 100644
>> --- a/drivers/mfd/rtl8411.c
>> +++ b/drivers/mfd/rtl8411.c
>> @@ -216,6 +216,31 @@ static int rtl8411_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
>>   	return rtsx_pci_write_register(pcr, LDO_CTL, mask, val);
>>   }
>>   
>> +static int rtl8402_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
>> +{
>> +	u8 mask, val;
>> +	int err;
>> +
>> +	mask = (BPP_REG_TUNED18 << BPP_TUNED18_SHIFT_8402) | BPP_PAD_MASK;
>> +	if (voltage == OUTPUT_3V3) {
>> +		err = rtsx_pci_write_register(pcr,
>> +				SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_3v3);
>> +		if (err < 0)
>> +			return err;
>> +		val = (BPP_ASIC_3V3 << BPP_TUNED18_SHIFT_8402) | BPP_PAD_3V3;
>> +	} else if (voltage == OUTPUT_1V8) {
>> +		err = rtsx_pci_write_register(pcr,
>> +				SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_1v8);
>> +		if (err < 0)
>> +			return err;
>> +		val = (BPP_ASIC_2V0 << BPP_TUNED18_SHIFT_8402) | BPP_PAD_1V8;
>> +	} else {
>> +		return -EINVAL;
>> +	}
>> +
>> +	return rtsx_pci_write_register(pcr, LDO_CTL, mask, val);
>> +}
>> +
> I opposed this on last submission.
>
> Please find a better way to do it.
>
> Ideally, I'd like to see one function for this kind of thing. The
> information required to ensure this is carried out correctly on each
> differing platform can be passed in via a struct instead.
ok, I will add some member to rtsx_pcr to merge the function.
> <snip>
>


-- 
Best Regards
Micky.

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