linux-kernel - Re: [PATCH v2] mfd: rtsx: fix PM suspend for 5227 & 5249

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Message-ID: <54476EAE.9090309@realsil.com.cn>
Date:	Wed, 22 Oct 2014 16:45:34 +0800
From:	Micky Ching <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>,
	<rogerable@...ltek.com>, <wei_wang@...lsil.com.cn>
Subject: Re: [PATCH v2] mfd: rtsx: fix PM suspend for 5227 & 5249

Hi Lee,

I am wondering if you have accepted this patch?

Best Regards.
micky.
On 10/11/2014 09:07 AM, Micky Ching wrote:
>
> On 10/10/2014 06:21 PM, Lee Jones wrote:
>> On Fri, 10 Oct 2014, micky_ching@...lsil.com.cn wrote:
>>
>>> From: Micky Ching <micky_ching@...lsil.com.cn>
>>>
>>> Fix rts5227&5249 failed send buffer cmd after suspend,
>>> PM_CTRL3 should reset before send any buffer cmd after suspend.
>>> Otherwise, buffer cmd will failed, this will lead resume fail.
>>>
>>> Signed-off-by: Micky Ching <micky_ching@...lsil.com.cn>
>>> ---
>>>   drivers/mfd/Makefile         |  2 +-
>>>   drivers/mfd/rts5227.c        |  6 ++++++
>>>   drivers/mfd/rts5249.c        |  4 ++++
>>>   drivers/mfd/rtsx_gops.c      | 37 
>>> +++++++++++++++++++++++++++++++++++++
>>>   drivers/mfd/rtsx_pcr.h       |  3 +++
>>>   include/linux/mfd/rtsx_pci.h | 28 ++++++++++++++++++++++++++++
>>>   6 files changed, 79 insertions(+), 1 deletion(-)
>>>   create mode 100644 drivers/mfd/rtsx_gops.c
>> [...]
>>
>>> +static inline int rtsx_pci_update_cfg_byte(struct rtsx_pcr *pcr, 
>>> int addr,
>>> +        u8 mask, u8 append)
>>> +{
>>> +    int err;
>>> +    u8 val;
>>> +
>>> +    err = pci_read_config_byte(pcr->pci, addr, &val);
>>> +    if (err < 0)
>>> +        return err;
>>> +    return pci_write_config_byte(pcr->pci, addr, (val & mask) | 
>>> append);
>>> +}
>>> +
>> Why is this in here?  Why not put it in the generic ops file?
> This function is a good interface, we will use it many times in the 
> future.
>
> generic ops file is only used to some operation can be used for 
> different chip,
> some special chip may replace generic ops by provide their own ops.
> So generic ops file is just use to abstract the same code, not for 
> good interface.
>
>>
>

-- 
Best Regards,
micky.
--------------------
Realsil Microelectronics Inc. PCBU swlinux.
Tel:86-512-6258-8966 Ext: 5806

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