From: Paul Kocialkowski <paul.kocialkowski@bootlin.com> To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev Cc: Paul Kocialkowski <paul.kocialkowski@bootlin.com>, Mauro Carvalho Chehab <mchehab@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, Chen-Yu Tsai <wens@csie.org>, Jernej Skrabec <jernej.skrabec@gmail.com>, Samuel Holland <samuel@sholland.org>, Sakari Ailus <sakari.ailus@linux.intel.com>, Hans Verkuil <hans.verkuil@cisco.com>, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, Maxime Ripard <mripard@kernel.org>, Thomas Petazzoni <thomas.petazzoni@bootlin.com> Subject: [PATCH v4 5/6] media: sun6i-csi: Detect the availability of the ISP Date: Wed, 25 May 2022 21:10:25 +0200 [thread overview] Message-ID: <20220525191026.696636-6-paul.kocialkowski@bootlin.com> (raw) In-Reply-To: <20220525191026.696636-1-paul.kocialkowski@bootlin.com> Add a helper to detect whether the ISP is available and connected and store the indication in a driver-wide variable. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 33 +++++++++++++++++++ .../platform/sunxi/sun6i-csi/sun6i_csi.h | 3 ++ 2 files changed, 36 insertions(+) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index 00521f966cee..b16166cba2ef 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -24,6 +24,35 @@ #include "sun6i_csi_capture.h" #include "sun6i_csi_reg.h" +/* ISP */ + +static bool sun6i_csi_isp_detect(struct sun6i_csi_device *csi_dev) +{ + struct device *dev = csi_dev->dev; + struct fwnode_handle *handle = NULL; + + /* ISP is not available if disabled in kernel config. */ + if (!IS_ENABLED(CONFIG_VIDEO_SUN6I_ISP)) + return 0; + + /* + * ISP is not available if not connected via fwnode graph. + * This weill also check that the remote parent node is available. + */ + handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), + SUN6I_CSI_PORT_ISP, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!handle) + return 0; + + fwnode_handle_put(handle); + + dev_info(dev, "ISP link is available\n"); + csi_dev->isp_available = true; + + return 0; +} + /* Media */ static const struct media_device_ops sun6i_csi_media_ops = { @@ -290,6 +319,10 @@ static int sun6i_csi_probe(struct platform_device *platform_dev) if (ret) return ret; + ret = sun6i_csi_isp_detect(csi_dev); + if (ret) + goto error_resources; + ret = sun6i_csi_v4l2_setup(csi_dev); if (ret) goto error_resources; diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index e611bdd6e9b2..8e232cd91ebe 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -21,6 +21,7 @@ enum sun6i_csi_port { SUN6I_CSI_PORT_PARALLEL = 0, SUN6I_CSI_PORT_MIPI_CSI2 = 1, + SUN6I_CSI_PORT_ISP = 2, }; struct sun6i_csi_buffer { @@ -44,6 +45,8 @@ struct sun6i_csi_device { struct clk *clock_mod; struct clk *clock_ram; struct reset_control *reset; + + bool isp_available; }; struct sun6i_csi_variant { -- 2.36.1
WARNING: multiple messages have this Message-ID (diff)
From: Paul Kocialkowski <paul.kocialkowski@bootlin.com> To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev Cc: Paul Kocialkowski <paul.kocialkowski@bootlin.com>, Mauro Carvalho Chehab <mchehab@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, Chen-Yu Tsai <wens@csie.org>, Jernej Skrabec <jernej.skrabec@gmail.com>, Samuel Holland <samuel@sholland.org>, Sakari Ailus <sakari.ailus@linux.intel.com>, Hans Verkuil <hans.verkuil@cisco.com>, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, Maxime Ripard <mripard@kernel.org>, Thomas Petazzoni <thomas.petazzoni@bootlin.com> Subject: [PATCH v4 5/6] media: sun6i-csi: Detect the availability of the ISP Date: Wed, 25 May 2022 21:10:25 +0200 [thread overview] Message-ID: <20220525191026.696636-6-paul.kocialkowski@bootlin.com> (raw) In-Reply-To: <20220525191026.696636-1-paul.kocialkowski@bootlin.com> Add a helper to detect whether the ISP is available and connected and store the indication in a driver-wide variable. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 33 +++++++++++++++++++ .../platform/sunxi/sun6i-csi/sun6i_csi.h | 3 ++ 2 files changed, 36 insertions(+) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index 00521f966cee..b16166cba2ef 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -24,6 +24,35 @@ #include "sun6i_csi_capture.h" #include "sun6i_csi_reg.h" +/* ISP */ + +static bool sun6i_csi_isp_detect(struct sun6i_csi_device *csi_dev) +{ + struct device *dev = csi_dev->dev; + struct fwnode_handle *handle = NULL; + + /* ISP is not available if disabled in kernel config. */ + if (!IS_ENABLED(CONFIG_VIDEO_SUN6I_ISP)) + return 0; + + /* + * ISP is not available if not connected via fwnode graph. + * This weill also check that the remote parent node is available. + */ + handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), + SUN6I_CSI_PORT_ISP, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!handle) + return 0; + + fwnode_handle_put(handle); + + dev_info(dev, "ISP link is available\n"); + csi_dev->isp_available = true; + + return 0; +} + /* Media */ static const struct media_device_ops sun6i_csi_media_ops = { @@ -290,6 +319,10 @@ static int sun6i_csi_probe(struct platform_device *platform_dev) if (ret) return ret; + ret = sun6i_csi_isp_detect(csi_dev); + if (ret) + goto error_resources; + ret = sun6i_csi_v4l2_setup(csi_dev); if (ret) goto error_resources; diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index e611bdd6e9b2..8e232cd91ebe 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -21,6 +21,7 @@ enum sun6i_csi_port { SUN6I_CSI_PORT_PARALLEL = 0, SUN6I_CSI_PORT_MIPI_CSI2 = 1, + SUN6I_CSI_PORT_ISP = 2, }; struct sun6i_csi_buffer { @@ -44,6 +45,8 @@ struct sun6i_csi_device { struct clk *clock_mod; struct clk *clock_ram; struct reset_control *reset; + + bool isp_available; }; struct sun6i_csi_variant { -- 2.36.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-05-25 19:10 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-05-25 19:10 [PATCH v4 0/6] Allwinner A31/A83T MIPI CSI-2 and A31 ISP / ISP Driver Paul Kocialkowski 2022-05-25 19:10 ` Paul Kocialkowski 2022-05-25 19:10 ` [PATCH v4 1/6] dt-bindings: media: Add Allwinner A31 ISP bindings documentation Paul Kocialkowski 2022-05-25 19:10 ` Paul Kocialkowski 2022-05-26 1:46 ` Rob Herring 2022-05-26 1:46 ` Rob Herring 2022-06-02 14:51 ` Rob Herring 2022-06-02 14:51 ` Rob Herring 2022-05-25 19:10 ` [PATCH v4 2/6] dt-bindings: media: sun6i-a31-csi: Add ISP output port Paul Kocialkowski 2022-05-25 19:10 ` Paul Kocialkowski 2022-05-25 19:10 ` [PATCH v4 3/6] staging: media: Add support for the Allwinner A31 ISP Paul Kocialkowski 2022-05-25 19:10 ` Paul Kocialkowski 2022-05-25 19:10 ` [PATCH v4 4/6] MAINTAINERS: Add entry for the Allwinner A31 ISP driver Paul Kocialkowski 2022-05-25 19:10 ` Paul Kocialkowski 2022-05-25 19:10 ` Paul Kocialkowski [this message] 2022-05-25 19:10 ` [PATCH v4 5/6] media: sun6i-csi: Detect the availability of the ISP Paul Kocialkowski 2022-05-25 19:10 ` [PATCH v4 6/6] media: sun6i-csi: Add support for hooking to the isp devices Paul Kocialkowski 2022-05-25 19:10 ` Paul Kocialkowski
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