On Mon, Jun 19, 2023 at 10:50:10AM +0000, Sakari Ailus wrote: > On Fri, Jun 09, 2023 at 03:09:41PM +0200, Tommaso Merciai wrote: > > On Fri, Jun 09, 2023 at 09:17:42AM +0000, Sakari Ailus wrote: > > > On Thu, Jun 08, 2023 at 10:31:16AM +0200, Tommaso Merciai wrote: > > > > The Alvium camera is shipped with sensor + isp in the same housing. > > > > The camera can be equipped with one out of various sensor and abstract > > > > the user from this. Camera is connected via MIPI CSI-2. > > > > > > > > Most of the camera module features are supported, with the main exception > > > > being fw update. > > > > > > > > The driver provides all mandatory, optional and recommended V4L2 controls > > > > for maximum compatibility with libcamera > > > > > > > > References: > > > > - https://www.alliedvision.com/en/products/embedded-vision-solutions > > > > > > > > Signed-off-by: Tommaso Merciai <tomm.merciai@xxxxxxxxx> > > > > --- > > > > Changes since v2: > > > > - Removed gpios/clock handling as suggested by LPinchart > > > > - Added vcc-ext-in supply support as suggested by LPinchart > > > > - Fixed alvium_setup_mipi_fmt funct as suggested by CJAILLET > > > > - Removed upside_down/hshake_bit priv data as suggested by CJAILLET > > > > - Fixed commit body as suggested by LPinchart > > > > - Mv alvium_set_streamon_delay to yalvium_set_lp2hs_delay > > > > - Fixed comment on lp2hs prop as suggested by LPinchart > > > > - Added pm resume/suspend functs as suggested by LPinchart > > > > - Dropped alvium_link_setup/alvium_s_power as suggested by LPinchart > > > > - Fixed regs defines as suggested by LPinchart > > > > - Fixed typedef as suggested by LPinchart > > > > - Dropped bcrm_v/fw_v from priv data as suggested by LPinchart > > > > - Now driver use the subdev active state to store the active format and crop > > > > as suggested by LPinchart > > > > - Dropped alvium_is_csi2/i2c_to_alvium as suggested by LPinchart > > > > > > > > Changes since v3: > > > > - Fixed warnings Reported-by: kernel test robot <lkp@xxxxxxxxx> > > > > > > > > Changes since v4: > > > > - Removed print into alvium_get_dt_data for alliedvision,lp2hs-delay-us as > > > > suggested by CDooley > > > > > > > > drivers/media/i2c/Kconfig | 10 + > > > > drivers/media/i2c/Makefile | 1 + > > > > drivers/media/i2c/alvium-csi2.c | 3479 +++++++++++++++++++++++++++++++ > > > > drivers/media/i2c/alvium-csi2.h | 485 +++++ > > > > 4 files changed, 3975 insertions(+) > > > > create mode 100644 drivers/media/i2c/alvium-csi2.c > > > > create mode 100644 drivers/media/i2c/alvium-csi2.h [snip] > > > > diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c > > > > new file mode 100644 > > > > index 000000000000..52c9263075cf > > > > --- /dev/null > > > > +++ b/drivers/media/i2c/alvium-csi2.c > > > > @@ -0,0 +1,3479 @@ [snip] > > > > +static int alvium_get_img_width_params(struct alvium_dev *alvium) > > > > +{ > > > > + struct device *dev = &alvium->i2c_client->dev; > > > > + int ret; > > > > + u64 val; > > > > + > > > > + if (!alvium->bcrm_addr) > > > > + return -EINVAL; > > > > + > > > > + ret = alvium_read(alvium, > > > > + REG_BCRM_IMG_WIDTH_MIN_R, > > > > + &val); > > > > + if (ret) { > > > > + dev_err(dev, "Fail to read img min width reg\n"); > > > > + return ret; > > > > + } > > > > > > Could you add a macro that assigns the value to the variable (or a struct > > > field in this case) when the read is successful? Add the print if you think > > > you need it. > > > > I don't get this comment. > > Can you explain me better your plan please. > > You have exactly the same pattern repeated over and over in a number of > functions. I'd like you to add a macro (or a function) that takes what > varies as arguments, and call that function here. It would reduce a lot of > the repeated lines code here. > > ... The best option is to print an error message in alvium_read() and drop all error messages from the callers. -- Regards, Laurent Pinchart
