Hello, Hans reported he sees a few warnings when compiling CEU driver with gcc7.3.0
I have silenced them, and the one reported in "probe" was actually a bug. That's the diff from v10: diff --git a/drivers/media/platform/renesas-ceu.c b/drivers/media/platform/renesas-ceu.c index 6624fba..cfabe1a 100644 --- a/drivers/media/platform/renesas-ceu.c +++ b/drivers/media/platform/renesas-ceu.c @@ -412,6 +412,9 @@ static int ceu_hw_config(struct ceu_device *ceudev) cfzsr = (pix->height << 16) | pix->width; cdwdr = pix->width; break; + + default: + return -EINVAL; } camcr |= mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; @@ -1568,8 +1571,10 @@ static int ceu_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ceudev->base = devm_ioremap_resource(dev, res); - if (IS_ERR(ceudev->base)) + if (IS_ERR(ceudev->base)) { + ret = PTR_ERR(ceudev->base); goto error_free_ceudev; + } ret = platform_get_irq(pdev, 0); if (ret < 0) { Now that I've switch to a new compiler I see two more warnings, which are to be ignored imo, as this behaviour is expected: ../drivers/media/platform/renesas-ceu.c: In function ‘ceu_hw_config’: ../drivers/media/platform/renesas-ceu.c:392:9: warning: this statement may fall through [-Wimplicit-fallthrough=] cdocr |= CEU_CDOCR_NO_DOWSAMPLE; ../drivers/media/platform/renesas-ceu.c:393:2: note: here case V4L2_PIX_FMT_NV12: ^~~~ ../drivers/media/platform/renesas-ceu.c:405:9: warning: this statement may fall through [-Wimplicit-fallthrough=] cdocr |= CEU_CDOCR_NO_DOWSAMPLE; ../drivers/media/platform/renesas-ceu.c:406:2: note: here case V4L2_PIX_FMT_NV21: ^~~~ MAINTAINERS file update has been sent as separate series, and I guess Hans you can now send a pull request for this driver! Cheers! j v10->v11: - Silence two compiler warnings reported by Hans on CEU driver v10 v9->v10: - Close 0-days warning on ov772x frame interval - Set default format on CEU after input change - Drop ov7670 mbus frame format set not to block this series while topic gets clarified v8->v9: - Address Laurent's review of ov772x frame rate - Address Sergei comment on ceu node name v7->v8: - Calculate PLL divider/multiplier and do not use static tables - Change RZ/A1-H to RZ/A1H (same for L) in bindings documentation - Use rounded clock rate in Migo-R board code as SH clk_set_clk() implementation does not perform rounding - Set ycbcr_enc and other fields of v4l2_mbus_format for ov772x as patch [11/11] does for ov7670 v6->v7: - Add patch to handle ycbr_enc and other fields of v4l2_mbus_format for ov7670 - Add patch to handle frame interval for ov772x - Rebased on Hans' media-tree/parm branch with v4l2_g/s_parm_cap - Drop const modifier in CEU releated fields of Migo-R setup.c board file to silence complier warnings. v5->v6: - Add Hans' Acked-by to most patches - Fix a bad change in ov772x get_selection - Add .buf_prepare callack to CEU and verify plane sizes there - Remove VB2_USERPTR from supported io_modes in CEU driver - Remove read() fops in CEU driver v4->v5: - Added Rob's and Laurent's Reviewed-by tag to DT bindings - Change CEU driver module license to "GPL v2" to match SPDX identifier as suggested by Philippe Ombredanne - Make struct ceu_data static as suggested by Laurent and add his Reviewed-by to CEU driver. v3->v4: - Drop generic fallback compatible string "renesas,ceu" - Addressed Laurent's comments on [3/9] - Fix error messages on irq get/request - Do not leak ceudev if irq_get fails - Make irq_mask a const field v2->v3: - Improved DT bindings removing standard properties (pinctrl- ones and remote-endpoint) not specific to this driver and improved description of compatible strings - Remove ov772x's xlkc_rate property and set clock rate in Migo-R board file - Made 'xclk' clock private to ov772x driver in Migo-R board file - Change 'rstb' GPIO active output level and changed ov772x and tw9910 drivers accordingly as suggested by Fabio - Minor changes in CEU driver to address Laurent's comments - Moved Migo-R setup patch to the end of the series to silence 0-day bot - Renamed tw9910 clock to 'xti' as per video decoder manual - Changed all SPDX identifiers to GPL-2.0 from previous GPL-2.0+ v1->v2: - DT -- Addressed Geert's comments and added clocks for CEU to mstp6 clock source -- Specified supported generic video iterfaces properties in dt-bindings and simplified example - CEU driver -- Re-worked interrupt handler, interrupt management, reset(*) and capture start operation -- Re-worked querycap/enum_input/enum_frameintervals to fix some v4l2_compliance failures -- Removed soc_camera legacy operations g/s_mbus_format -- Update to new notifier implementation -- Fixed several comments from Hans, Laurent and Sakari - Migo-R -- Register clocks and gpios for sensor drivers in Migo-R setup -- Updated sensors (tw9910 and ov772x) drivers headers and drivers to close remarks from Hans and Laurent: --- Removed platform callbacks and handle clocks and gpios from sensor drivers --- Remove g/s_mbus_config operations Jacopo Mondi (10): dt-bindings: media: Add Renesas CEU bindings include: media: Add Renesas CEU driver interface media: platform: Add Renesas CEU driver ARM: dts: r7s72100: Add Capture Engine Unit (CEU) media: i2c: Copy ov772x soc_camera sensor driver media: i2c: ov772x: Remove soc_camera dependencies media: i2c: ov772x: Support frame interval handling media: i2c: Copy tw9910 soc_camera sensor driver media: i2c: tw9910: Remove soc_camera dependencies arch: sh: migor: Use new renesas-ceu camera driver .../devicetree/bindings/media/renesas,ceu.txt | 81 + arch/arm/boot/dts/r7s72100.dtsi | 15 +- arch/sh/boards/mach-migor/setup.c | 225 ++- arch/sh/kernel/cpu/sh4a/clock-sh7722.c | 2 +- drivers/media/i2c/Kconfig | 20 + drivers/media/i2c/Makefile | 2 + drivers/media/i2c/ov772x.c | 1365 ++++++++++++++++ drivers/media/i2c/tw9910.c | 1039 ++++++++++++ drivers/media/platform/Kconfig | 9 + drivers/media/platform/Makefile | 1 + drivers/media/platform/renesas-ceu.c | 1675 ++++++++++++++++++++ include/media/drv-intf/renesas-ceu.h | 26 + include/media/i2c/ov772x.h | 6 +- include/media/i2c/tw9910.h | 9 + 14 files changed, 4344 insertions(+), 131 deletions(-) create mode 100644 Documentation/devicetree/bindings/media/renesas,ceu.txt create mode 100644 drivers/media/i2c/ov772x.c create mode 100644 drivers/media/i2c/tw9910.c create mode 100644 drivers/media/platform/renesas-ceu.c create mode 100644 include/media/drv-intf/renesas-ceu.h -- 2.7.4