On Tue, May 15, 2018 at 03:46:37AM +0000, Zheng, Jian Xu wrote: > Hi Sakari, > > > -----Original Message----- > > From: [email protected] [mailto:linux-media- > > [email protected]] On Behalf Of Sakari Ailus > > Sent: Saturday, May 12, 2018 8:48 PM > > To: Zheng, Jian Xu <[email protected]> > > Cc: Chen, JasonX Z <[email protected]>; Tomasz Figa > > <[email protected]>; Yeh, Andy <[email protected]>; Linux Media > > Mailing List <[email protected]>; Chiang, AlanX > > <[email protected]>; Qiu, Tian Shu <[email protected]> > > Subject: Re: [PATCH v11] media: imx258: Add imx258 camera sensor driver > > > > On Thu, May 10, 2018 at 11:08:43AM +0000, Zheng, Jian Xu wrote: > > > Hi Sakari & Jason, > > > > > > > -----Original Message----- > > > > From: [email protected] [mailto:linux-media- > > > > [email protected]] On Behalf Of Sakari Ailus > > > > Sent: Wednesday, May 9, 2018 5:43 PM > > > > To: Chen, JasonX Z <[email protected]> > > > > Cc: Tomasz Figa <[email protected]>; Yeh, Andy > > > > <[email protected]>; Linux Media Mailing List > > > > <[email protected]>; Chiang, AlanX > > > > <[email protected]> > > > > Subject: Re: [PATCH v11] media: imx258: Add imx258 camera sensor > > > > driver > > > > > > > > Hi Jason, > > > > > > > > On Wed, May 09, 2018 at 09:28:30AM +0000, Chen, JasonX Z wrote: > > > > > Hello Tomasz > > > > > > > > > > >> +/* Test Pattern Control */ > > > > > >> +#define IMX258_REG_TEST_PATTERN 0x0600 > > > > > >> +#define IMX258_TEST_PATTERN_DISABLE 0 > > > > > >> +#define IMX258_TEST_PATTERN_SOLID_COLOR 1 > > > > > >> +#define IMX258_TEST_PATTERN_COLOR_BARS 2 #define > > > > > >> +IMX258_TEST_PATTERN_GREY_COLOR 3 > > > > > >> +#define IMX258_TEST_PATTERN_PN9 4 > > > > > > I suppose we only use IMX258_TEST_PATTERN_COLOR_BARS. I heard that > > > we'd better remove the functions/code no one would use. Is that true? e.g. > > > remove all h_flip and v_flip ioctls because it's not used by anyone. > > > > HFLIP and VFLIP support were AFAIR removed as they were not supported > > correctly by the driver --- they do affect the pixel order, i.e. the format.
> So you mean that if the sensor is RAW format, we should not implement > HFLIP/VFLIP. Because it changes the pixel order? I don't quite follow the > logic here. In the meantime, if the logic works here, we need some other > kind of HFLIP/VFLIP ioctl because it's supported by HW. You can implement it but the implementation needs to be correctly reflect the flipping in the pixel order reported by the driver. -- Sakari Ailus [email protected]
