linux-kernel - Re: [PATCH v5 1/6] mfd: rtsx: add func to split u32 into register

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Date:	Wed, 21 Jan 2015 07:45:18 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Ulf Hansson <ulf.hansson@...aro.org>
Cc:	micky <micky_ching@...lsil.com.cn>, Chris Ball <chris@...ntf.net>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	"driverdev-devel@...uxdriverproject.org" 
	<devel@...uxdriverproject.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-mmc <linux-mmc@...r.kernel.org>,
	Roger <rogerable@...ltek.com>, Wei WANG <wei_wang@...lsil.com.cn>
Subject: Re: [PATCH v5 1/6] mfd: rtsx: add func to split u32 into register

On Tue, 20 Jan 2015, Ulf Hansson wrote:

> On 20 January 2015 at 15:47, Lee Jones <lee.jones@...aro.org> wrote:
> > On Tue, 23 Dec 2014, micky_ching@...lsil.com.cn wrote:
> >
> >> From: Micky Ching <micky_ching@...lsil.com.cn>
> >>
> >> Add helper function to write u32 to registers, if we want to put u32
> >> value to 4 continuous register, this can help us reduce tedious work.
> >>
> >> Signed-off-by: Micky Ching <micky_ching@...lsil.com.cn>
> >> Acked-by: Lee Jones <lee.jones@...aro.org>
> >> ---
> >>  include/linux/mfd/rtsx_pci.h | 9 +++++++++
> >>  1 file changed, 9 insertions(+)
> >
> > Applied, thanks.
> 
> This one has already been queued by you, for 3.19, and it's in Linus tree. :-)
> 
> For your reference, I have queued the mmc patches which depends on
> $subject patch for 3.20.

I discovered this myself when I attempted to apply it. :)

Thanks for the heads-up though.

> >> diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
> >> index 74346d5..9234449 100644
> >> --- a/include/linux/mfd/rtsx_pci.h
> >> +++ b/include/linux/mfd/rtsx_pci.h
> >> @@ -558,6 +558,7 @@
> >>  #define SD_SAMPLE_POINT_CTL          0xFDA7
> >>  #define SD_PUSH_POINT_CTL            0xFDA8
> >>  #define SD_CMD0                              0xFDA9
> >> +#define   SD_CMD_START                       0x40
> >>  #define SD_CMD1                              0xFDAA
> >>  #define SD_CMD2                              0xFDAB
> >>  #define SD_CMD3                              0xFDAC
> >> @@ -967,4 +968,12 @@ static inline u8 *rtsx_pci_get_cmd_data(struct rtsx_pcr *pcr)
> >>       return (u8 *)(pcr->host_cmds_ptr);
> >>  }
> >>
> >> +static inline void rtsx_pci_write_be32(struct rtsx_pcr *pcr, u16 reg, u32 val)
> >> +{
> >> +     rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg,     0xFF, val >> 24);
> >> +     rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 1, 0xFF, val >> 16);
> >> +     rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 2, 0xFF, val >> 8);
> >> +     rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 3, 0xFF, val);
> >> +}
> >> +
> >>  #endif
> >

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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