On Tue, 2019-02-19 at 17:51 +0900, Tomasz Figa wrote: > Hi Jungo, > > On Sun, Feb 17, 2019 at 11:56 AM Jungo Lin <jungo.lin@xxxxxxxxxxxx> wrote: > > > > On Wed, 2019-02-13 at 18:50 +0900, Tomasz Figa wrote: > > > (() . ( strHi Frederic, Jungo, > > > > > > On Tue, Feb 5, 2019 at 3:43 PM Frederic Chen <frederic.chen@xxxxxxxxxxxx> wrote: > > > > > > > > From: Jungo Lin <jungo.lin@xxxxxxxxxxxx> > > > > > > > > This patch adds the driver for Pass unit in Mediatek's camera > > > > ISP system. Pass 1 unit is embedded in Mediatek SOCs. It > > > > provides RAW processing which includes optical black correction, > > > > defect pixel correction, W/IR imbalance correction and lens > > > > shading correction. > > > > > > > > The mtk-isp directory will contain drivers for multiple IP > > > > blocks found in Mediatek ISP system. It will include ISP Pass 1 > > > > driver, sensor interface driver, DIP driver and face detection > > > > driver. > > > > > > Thanks for the patches! Please see my comments inline. > > > > > > > Dear Thomas: > > > > Thanks for your comments. > > > > We will revise the source codes based on your comments. > > Since there are many comments to fix/revise, we will categorize & > > prioritize these with below list: > > > > 1. Coding style issues. > > 2. Coding defects, including unused codes. > > 3. Driver architecture refactoring, such as removing mtk_cam_ctx, > > unnecessary abstraction layer, etc. > > > > Thanks for replying to the comments! > > Just to clarify, there is no need to hurry with resending a next patch > set with only a subset of the changes. Please take your time to > address all the comments before sending the next revision. This > prevents forgetting about some remaining comments and also lets other > reviewers come with new comments or some alternative ideas for already > existing comments. Second part of my review is coming too. > > P.S. Please avoid top-posting on mailing lists. If replying to a > message, please reply below the related part of that message. (I've > moved your reply to the place in the email where it should be.) > > [snip] Hi, Tomasz, Thanks for your advice. We will prepare the next patch set after all comments are revised. > > > > + phys_addr_t paddr; > > > > > > We shouldn't need physical address either. I suppose this is for the > > > SCP, but then it should be a DMA address obtained from dma_map_*() > > > with struct device pointer of the SCP. > > > > > > > Yes, this physical address is designed for SCP. > > For tuning buffer, it will be touched by SCP and > > SCP can't get the physical address by itself. So we need to get > > this physical address in the kernel space via mtk_cam_smem_iova_to_phys > > function call and pass it to the SCP. At the same time, DMA address > > (daddr) is used for ISP HW. > > > > Right, but my point is that in the kernel phys_addr_t is the physical > address from the CPU point of view. Any address from device point of > view is dma_addr_t and should be obtained from the DMA mapping API > (even if it's numerically the same as physical address). > OK. In order to clarify the address usage, is it ok to rename "dma_addr_t scp_addr"? Moreover, below function will be also renamed. dma_addr_t mtk_cam_smem_iova_to_scp_phys(struct device *dev, dma_addr_t iova) Could you help us to review? If you have any better suggestion, please kindly let us know. Best regards, Jungo > Best regards, > Tomasz > > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-mediatek
