From nobody Fri Oct 3 19:07:15 2025 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C23362D6E67 for ; Wed, 27 Aug 2025 06:25:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756275930; cv=none; b=fEDkbZvZjsZrIOowr+IdhSxmXMHFp5BSjsblExNIhzHK3OUqM3m4kCEDdPU1T1z3BpuIVj6726G1XSUgfmdDzq7iE4sHgGdSJlzszDx1h5RsafujJYNy7nzIrHUCfBSDAQ7iNXKxQ+jbwQ2y0NaHZcfFoncOrYj7rQ/f24Gt2l8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756275930; c=relaxed/simple; bh=IE14bylnXzKuuTZLY5cfC2OGFjfl9F8r5qeSFNYtPMs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=sDaMuhi797LBZxCORuUBQzWeRYx2cS9YckpxLC78xPXl6wGkCG4ZZu7bF7/oQ+gdiZZxITVxMLc+w4DtchP6/N7mMBIvu+dmRIKApI3mWB0anw17+ZvOgvlB5rln4VaYKROR8rGSQlJWItnvFx/Zlu94brjQXUPlpe3pfsuvwaY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=pSF4wJW0; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="pSF4wJW0" Received: from mail.ideasonboard.com (unknown [223.190.80.94]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 9CDE4300E; Wed, 27 Aug 2025 08:24:23 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1756275864; bh=IE14bylnXzKuuTZLY5cfC2OGFjfl9F8r5qeSFNYtPMs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=pSF4wJW02r03WD+U0XzXB0WgxRjxeuNmk53rX5N6E+n5wFBm/lQw2wE/LK/3bzd3d l7fGkv/8ppLUK3dgkj8eKSRyDhb2y2zZZyLQQSPCAw6HmwjlyguPDTYD4q/xFiG6Dv ifaXvqRmvjfitndW8JR2i2vRXYANSrObK/UXUmY8= From: Jai Luthra Date: Wed, 27 Aug 2025 11:54:10 +0530 Subject: [PATCH 3/5] platform/broadcom: Destage VCHIQ interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250827-vchiq-destage-v1-3-5052a0d81c42@ideasonboard.com> References: <20250827-vchiq-destage-v1-0-5052a0d81c42@ideasonboard.com> In-Reply-To: <20250827-vchiq-destage-v1-0-5052a0d81c42@ideasonboard.com> To: Florian Fainelli , Broadcom internal kernel review list , Greg Kroah-Hartman , Ray Jui , Scott Branden Cc: linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, kernel-list@raspberrypi.com, Stefan Wahren , Dave Stevenson , Laurent Pinchart , Jai Luthra X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=9659; i=jai.luthra@ideasonboard.com; h=from:subject:message-id; bh=IE14bylnXzKuuTZLY5cfC2OGFjfl9F8r5qeSFNYtPMs=; b=owEBbQKS/ZANAwAKAUPekfkkmnFFAcsmYgBorqSb44bI+4ZR0Z4yqrBR4Yr8ObWwfpQdzXaw3 LPAlyXEQo2JAjMEAAEKAB0WIQRN4NgY5dV16NRar8VD3pH5JJpxRQUCaK6kmwAKCRBD3pH5JJpx RTzID/4omGkEfgUQ2Zbub4EbXqYd3wrapBLwoU5UeiZxTNzomITK+Agt7jHtcB1TJARGwynHbcm knKTnR+GuWA8tF8k0kLrwgIl5Xt6QhJhrHs2xD3xqydN+Ph322aaHhbw5Ew2ktRrOdJbz9MZIrN BCtZ3Dm46w0MGcYkeZGFuEhJBVhXaCNa9zabpL3JvbIaokkfbSJQlJ+jsMKQkrUo8xl2gz7QsQt Bjk3ef2tppozZ9GLUYP6t3r2nfI0JkgLunZWUXYiZoGziWbUb5/CpEGT1/Q/hRB6wAe3tuMiif/ zpcn68aDkTj+JqjNAh6HNMNzwY3QUOGjxGv2ezulMeGlwDINXuoaUu+iIdGSkoclUhxdFDRoJ00 /d5krM+t1PNevw3tPGPe3qt+T3lKe6++XVxU0bw8u8uZ0CyH6JgjQSAYf12a/yOfkUk0MsDslEq kERJZuMCo5yTiQhLHsBjDYI9b+mpb4VTvaB4YDbnBuWU+F7AH6q+XVoKfI7V4PgzPnmHPuS0UPN RJSi47366hMsWhMxNmqd/ee0ilxMX/gHVr21LwKeLTbCYi6EF2MyKvQLGuCDh/9l5qNnXubvmjD 6ySQ0uJ05TgM8mObrUMWzwQ9Nq3n1UTQ9OCPmH448imk0gQXMzs+BprcFTE0AnDiHbEt/W1QFK5 //9yM88Kqm55tGg== X-Developer-Key: i=jai.luthra@ideasonboard.com; a=openpgp; fpr=4DE0D818E5D575E8D45AAFC543DE91F9249A7145 Destage the VCHIQ interface driver to drivers/platform/broadcom. The remaining TODO items are as follows: 1. Upstream the vc_mem char driver 2. Upstream the vc-sm-cma driver 3. Improve documentation These can be handled separately, after destaging the main interface here. Signed-off-by: Jai Luthra --- MAINTAINERS | 1 + drivers/platform/Kconfig | 2 ++ drivers/platform/Makefile | 1 + drivers/platform/broadcom/Kconfig | 37 ++++++++++++++++++= ++++ drivers/platform/broadcom/Makefile | 14 ++++++++ .../broadcom/vchiq-interface}/TESTING | 0 .../broadcom/vchiq-interface}/TODO | 0 .../broadcom/vchiq-interface}/vchiq_arm.c | 0 .../broadcom/vchiq-interface}/vchiq_bus.c | 0 .../broadcom/vchiq-interface}/vchiq_core.c | 0 .../broadcom/vchiq-interface}/vchiq_debugfs.c | 0 .../broadcom/vchiq-interface}/vchiq_dev.c | 0 .../broadcom/vchiq-interface}/vchiq_ioctl.h | 0 drivers/staging/vc04_services/Kconfig | 35 ------------------= -- drivers/staging/vc04_services/Makefile | 12 ------- 15 files changed, 55 insertions(+), 47 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index f17ebb1fa51bd7e4dcb2ae1b0fced6d41685dc84..f39f326a88d7332906ecdd1d9d9= 0cc6848ba3205 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4753,6 +4753,7 @@ S: Maintained T: git https://github.com/broadcom/stblinux.git F: Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml F: drivers/pci/controller/pcie-brcmstb.c +F: drivers/platform/broadcom/vchiq-interface F: drivers/staging/vc04_services F: include/linux/vchiq N: bcm2711 diff --git a/drivers/platform/Kconfig b/drivers/platform/Kconfig index 960fd6a82450a4c7b97d51ea3bc29795ee74efd1..325ae46a723a2e6cb15373ea1f9= 4810e0d250e06 100644 --- a/drivers/platform/Kconfig +++ b/drivers/platform/Kconfig @@ -18,3 +18,5 @@ source "drivers/platform/surface/Kconfig" source "drivers/platform/x86/Kconfig" =20 source "drivers/platform/arm64/Kconfig" + +source "drivers/platform/broadcom/Kconfig" diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile index 19ac54648586eb617af0f8a69e3205bd83e8c35b..2616a4585519acb45cd78adb1c2= b67ee16ffb6a6 100644 --- a/drivers/platform/Makefile +++ b/drivers/platform/Makefile @@ -13,3 +13,4 @@ obj-$(CONFIG_CHROME_PLATFORMS) +=3D chrome/ obj-$(CONFIG_CZNIC_PLATFORMS) +=3D cznic/ obj-$(CONFIG_SURFACE_PLATFORMS) +=3D surface/ obj-$(CONFIG_ARM64_PLATFORM_DEVICES) +=3D arm64/ +obj-$(CONFIG_BCM2835_VCHIQ) +=3D broadcom/ diff --git a/drivers/platform/broadcom/Kconfig b/drivers/platform/broadcom/= Kconfig new file mode 100644 index 0000000000000000000000000000000000000000..7dec1ca85d6c56bdb21a9cb170c= 1d0cdf7587e63 --- /dev/null +++ b/drivers/platform/broadcom/Kconfig @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: GPL-2.0 + +config BCM2835_VCHIQ + tristate "BCM2835 VCHIQ" + depends on BCM_VIDEOCORE && HAS_DMA + imply VCHIQ_CDEV + help + Broadcom BCM2835 and similar SoCs have a VPU called VideoCore. + This config enables the VCHIQ driver, which implements a + messaging interface between the kernel and the firmware running + on VideoCore. Other drivers use this interface to communicate to + the VPU. More specifically, the VCHIQ driver is used by + audio/video and camera drivers as well as for implementing MMAL + API, which is in turn used by several multimedia services on the + BCM2835 family of SoCs. + + Defaults to Y when the Broadcom Videocore services are included + in the build, N otherwise. + +if BCM2835_VCHIQ + +config VCHIQ_CDEV + bool "VCHIQ Character Driver" + help + Enable the creation of VCHIQ character driver. The cdev exposes + ioctls used by userspace libraries and testing tools to interact + with VideoCore, via the VCHIQ core driver (Check BCM2835_VCHIQ + for more info). + + This can be set to 'N' if the VideoCore communication is not + needed by userspace but only by other kernel modules + (like bcm2835-audio). + + If not sure, set this to 'Y'. + +endif + diff --git a/drivers/platform/broadcom/Makefile b/drivers/platform/broadcom= /Makefile new file mode 100644 index 0000000000000000000000000000000000000000..a807571c59a47bb418cbb1dfcc3= 89219d0d0ff22 --- /dev/null +++ b/drivers/platform/broadcom/Makefile @@ -0,0 +1,14 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_BCM2835_VCHIQ) +=3D vchiq.o + +vchiq-objs :=3D \ + vchiq-interface/vchiq_core.o \ + vchiq-interface/vchiq_arm.o \ + vchiq-interface/vchiq_bus.o \ + vchiq-interface/vchiq_debugfs.o \ + +ifdef CONFIG_VCHIQ_CDEV +vchiq-objs +=3D vchiq-interface/vchiq_dev.o +endif + diff --git a/drivers/staging/vc04_services/interface/TESTING b/drivers/plat= form/broadcom/vchiq-interface/TESTING similarity index 100% rename from drivers/staging/vc04_services/interface/TESTING rename to drivers/platform/broadcom/vchiq-interface/TESTING diff --git a/drivers/staging/vc04_services/interface/TODO b/drivers/platfor= m/broadcom/vchiq-interface/TODO similarity index 100% rename from drivers/staging/vc04_services/interface/TODO rename to drivers/platform/broadcom/vchiq-interface/TODO diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c = b/drivers/platform/broadcom/vchiq-interface/vchiq_arm.c similarity index 100% rename from drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c rename to drivers/platform/broadcom/vchiq-interface/vchiq_arm.c diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c = b/drivers/platform/broadcom/vchiq-interface/vchiq_bus.c similarity index 100% rename from drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c rename to drivers/platform/broadcom/vchiq-interface/vchiq_bus.c diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c= b/drivers/platform/broadcom/vchiq-interface/vchiq_core.c similarity index 100% rename from drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c rename to drivers/platform/broadcom/vchiq-interface/vchiq_core.c diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugf= s.c b/drivers/platform/broadcom/vchiq-interface/vchiq_debugfs.c similarity index 100% rename from drivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugfs= .c rename to drivers/platform/broadcom/vchiq-interface/vchiq_debugfs.c diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_dev.c = b/drivers/platform/broadcom/vchiq-interface/vchiq_dev.c similarity index 100% rename from drivers/staging/vc04_services/interface/vchiq_arm/vchiq_dev.c rename to drivers/platform/broadcom/vchiq-interface/vchiq_dev.c diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_ioctl.= h b/drivers/platform/broadcom/vchiq-interface/vchiq_ioctl.h similarity index 100% rename from drivers/staging/vc04_services/interface/vchiq_arm/vchiq_ioctl.h rename to drivers/platform/broadcom/vchiq-interface/vchiq_ioctl.h diff --git a/drivers/staging/vc04_services/Kconfig b/drivers/staging/vc04_s= ervices/Kconfig index ccc8e15886482e8caa4aeb12440036183fc9b80c..3c01a1a304f1e6e6a03062b1a5f= 6af59643adf66 100644 --- a/drivers/staging/vc04_services/Kconfig +++ b/drivers/staging/vc04_services/Kconfig @@ -11,41 +11,6 @@ menuconfig BCM_VIDEOCORE =20 if BCM_VIDEOCORE =20 -config BCM2835_VCHIQ - tristate "BCM2835 VCHIQ" - depends on HAS_DMA - imply VCHIQ_CDEV - help - Broadcom BCM2835 and similar SoCs have a VPU called VideoCore. - This config enables the VCHIQ driver, which implements a - messaging interface between the kernel and the firmware running - on VideoCore. Other drivers use this interface to communicate to - the VPU. More specifically, the VCHIQ driver is used by - audio/video and camera drivers as well as for implementing MMAL - API, which is in turn used by several multimedia services on the - BCM2835 family of SoCs. - - Defaults to Y when the Broadcom Videocore services are included - in the build, N otherwise. - -if BCM2835_VCHIQ - -config VCHIQ_CDEV - bool "VCHIQ Character Driver" - help - Enable the creation of VCHIQ character driver. The cdev exposes - ioctls used by userspace libraries and testing tools to interact - with VideoCore, via the VCHIQ core driver (Check BCM2835_VCHIQ - for more info). - - This can be set to 'N' if the VideoCore communication is not - needed by userspace but only by other kernel modules - (like bcm2835-audio). - - If not sure, set this to 'Y'. - -endif - source "drivers/staging/vc04_services/bcm2835-audio/Kconfig" =20 source "drivers/staging/vc04_services/bcm2835-camera/Kconfig" diff --git a/drivers/staging/vc04_services/Makefile b/drivers/staging/vc04_= services/Makefile index dad3789522b80420f1f72ca8f740c816fb3d9843..51c9466ec7a28141cf66508f602= f43cd89ad408b 100644 --- a/drivers/staging/vc04_services/Makefile +++ b/drivers/staging/vc04_services/Makefile @@ -1,16 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 -obj-$(CONFIG_BCM2835_VCHIQ) +=3D vchiq.o - -vchiq-objs :=3D \ - interface/vchiq_arm/vchiq_core.o \ - interface/vchiq_arm/vchiq_arm.o \ - interface/vchiq_arm/vchiq_bus.o \ - interface/vchiq_arm/vchiq_debugfs.o \ - -ifdef CONFIG_VCHIQ_CDEV -vchiq-objs +=3D interface/vchiq_arm/vchiq_dev.o -endif - obj-$(CONFIG_SND_BCM2835) +=3D bcm2835-audio/ obj-$(CONFIG_VIDEO_BCM2835) +=3D bcm2835-camera/ obj-$(CONFIG_BCM2835_VCHIQ_MMAL) +=3D vchiq-mmal/ --=20 2.50.1