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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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131823c434
In order to use the isp and csi together, both devices need to be parented to the same v4l2 and media devices. We use the isp as top-level device and let the csi code hook to its v4l2 and media devices when async subdev registration takes place. As a result v4l2/media device setup is only called when the ISP is missing and the capture device is registered after the devices are hooked. The bridge subdev and its notifier are registered without any device when the ISP is available. Top-level pointers for the devices are introduced to either redirect to the hooked ones (isp available) or the registered ones (isp missing). Also keep track of whether the capture node was setup or not to avoid cleaning up resources when it wasn't. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
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* Author: Yong Deng <yong.deng@magewell.com>
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* Copyright 2021-2022 Bootlin
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* Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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*/
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#ifndef _SUN6I_CSI_H_
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#define _SUN6I_CSI_H_
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#include <media/v4l2-device.h>
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#include <media/videobuf2-v4l2.h>
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#include "sun6i_csi_bridge.h"
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#include "sun6i_csi_capture.h"
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#define SUN6I_CSI_NAME "sun6i-csi"
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#define SUN6I_CSI_DESCRIPTION "Allwinner A31 CSI Device"
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enum sun6i_csi_port {
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SUN6I_CSI_PORT_PARALLEL = 0,
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SUN6I_CSI_PORT_MIPI_CSI2 = 1,
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SUN6I_CSI_PORT_ISP = 2,
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};
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struct sun6i_csi_buffer {
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struct vb2_v4l2_buffer v4l2_buffer;
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struct list_head list;
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};
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struct sun6i_csi_v4l2 {
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struct v4l2_device v4l2_dev;
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struct media_device media_dev;
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};
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struct sun6i_csi_device {
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struct device *dev;
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struct v4l2_device *v4l2_dev;
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struct media_device *media_dev;
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struct sun6i_csi_v4l2 v4l2;
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struct sun6i_csi_bridge bridge;
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struct sun6i_csi_capture capture;
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struct regmap *regmap;
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struct clk *clock_mod;
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struct clk *clock_ram;
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struct reset_control *reset;
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bool isp_available;
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};
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struct sun6i_csi_variant {
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unsigned long clock_mod_rate;
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};
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/* ISP */
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int sun6i_csi_isp_complete(struct sun6i_csi_device *csi_dev,
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struct v4l2_device *v4l2_dev);
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#endif
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