Hi Umang, Am 09.11.23 um 22:03 schrieb Umang Jain:
From: Naushir Patuck <naush@xxxxxxxxxxxxxxx> Driver for the BCM2835 ISP hardware block. This driver uses the MMAL component to program the ISP hardware through the VC firmware. The ISP component can produce two video stream outputs, and Bayer image statistics. This can't be encompassed in a simple V4L2 M2M device, so create a new device that registers 4 video nodes.
sorry, i don't have much knowledge about V4L2, so someone else should review this in depth. But from my PoV, patch 11, 12, 13 and 15 should be squash into this one.
Signed-off-by: Naushir Patuck <naush@xxxxxxxxxxxxxxx> Signed-off-by: Umang Jain <umang.jain@xxxxxxxxxxxxxxxx> --- MAINTAINERS | 9 + drivers/staging/vc04_services/Kconfig | 2 + drivers/staging/vc04_services/Makefile | 1 + .../staging/vc04_services/bcm2835-isp/Kconfig | 14 + .../vc04_services/bcm2835-isp/Makefile | 4 + .../bcm2835-isp/bcm2835-isp-ctrls.h | 72 + .../bcm2835-isp/bcm2835-isp-fmts.h | 482 +++++ .../bcm2835-isp/bcm2835-v4l2-isp.c | 1712 +++++++++++++++++ .../vc04_services/vchiq-mmal/mmal-encodings.h | 4 + .../vchiq-mmal/mmal-parameters.h | 165 +- include/uapi/linux/bcm2835-isp.h | 27 + 11 files changed, 2491 insertions(+), 1 deletion(-) create mode 100644 drivers/staging/vc04_services/bcm2835-isp/Kconfig create mode 100644 drivers/staging/vc04_services/bcm2835-isp/Makefile create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-ctrls.h create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c diff --git a/MAINTAINERS b/MAINTAINERS index 0748cc15588c..8670a8d95400 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3976,6 +3976,15 @@ F: Documentation/devicetree/bindings/mips/brcm/ F: arch/mips/bcm47xx/* F: arch/mips/include/asm/mach-bcm47xx/* +BROADCOM BCM2835 ISP DRIVER +M: Raspberry Pi Kernel Maintenance <kernel-list@xxxxxxxxxxxxxxx> +L: linux-media@xxxxxxxxxxxxxxx +S: Maintained +F: Documentation/media/uapi/v4l/pixfmt-meta-bcm2835-isp-stats.rst +F: Documentation/media/v4l-drivers/bcm2835-isp.rst +F: drivers/staging/vc04_services/bcm2835-isp +F: include/uapi/linux/bcm2835-isp.h + BROADCOM BCM4908 ETHERNET DRIVER M: Rafał Miłecki <rafal@xxxxxxxxxx> R: Broadcom internal kernel review list <bcm-kernel-feedback-list@xxxxxxxxxxxx> diff --git a/drivers/staging/vc04_services/Kconfig b/drivers/staging/vc04_services/Kconfig index 6c0e77d64376..e71e5a8b820a 100644 --- a/drivers/staging/vc04_services/Kconfig +++ b/drivers/staging/vc04_services/Kconfig @@ -44,6 +44,8 @@ source "drivers/staging/vc04_services/bcm2835-audio/Kconfig" source "drivers/staging/vc04_services/bcm2835-camera/Kconfig" +source "drivers/staging/vc04_services/bcm2835-isp/Kconfig" + source "drivers/staging/vc04_services/vchiq-mmal/Kconfig" source "drivers/staging/vc04_services/vc-sm-cma/Kconfig" diff --git a/drivers/staging/vc04_services/Makefile b/drivers/staging/vc04_services/Makefile index 1f61a263f22d..2cebf92525a0 100644 --- a/drivers/staging/vc04_services/Makefile +++ b/drivers/staging/vc04_services/Makefile @@ -16,3 +16,4 @@ obj-$(CONFIG_SND_BCM2835) += bcm2835-audio/ obj-$(CONFIG_VIDEO_BCM2835) += bcm2835-camera/ obj-$(CONFIG_BCM2835_VCHIQ_MMAL) += vchiq-mmal/ obj-$(CONFIG_BCM_VC_SM_CMA) += vc-sm-cma/ +obj-$(CONFIG_VIDEO_ISP_BCM2835) += bcm2835-isp/ diff --git a/drivers/staging/vc04_services/bcm2835-isp/Kconfig b/drivers/staging/vc04_services/bcm2835-isp/Kconfig new file mode 100644 index 000000000000..6222799ebe16 --- /dev/null +++ b/drivers/staging/vc04_services/bcm2835-isp/Kconfig @@ -0,0 +1,14 @@ +config VIDEO_ISP_BCM2835 + tristate "BCM2835 ISP support" + depends on MEDIA_SUPPORT + depends on VIDEO_DEV && (ARCH_BCM2835 || COMPILE_TEST) + depends on MEDIA_CONTROLLER + select BCM2835_VCHIQ_MMAL + select VIDEOBUF2_DMA_CONTIG + help + This is the V4L2 driver for the Broadcom BCM2835 ISP hardware.
I think the description is not helpful for all users. Not everybody knows what ISP is for. Please describe it more for an end user. Best regards
+ This operates over the VCHIQ interface to a service running on + VideoCore. + + To compile this driver as a module, choose M here: the module + will be called bcm2835-isp.
