[20/22] staging: media: Add support for the Allwinner A31 ISP

diff --git a/drivers/staging/media/sunxi/Kconfig b/drivers/staging/media/sunxi/Kconfig
index 4549a135741f..62a486aba88b 100644
--- a/drivers/staging/media/sunxi/Kconfig
+++ b/drivers/staging/media/sunxi/Kconfig
@@ -12,5 +12,6 @@  config VIDEO_SUNXI
 if VIDEO_SUNXI
 
 source "drivers/staging/media/sunxi/cedrus/Kconfig"
+source "drivers/staging/media/sunxi/sun6i-isp/Kconfig"
 
 endif
diff --git a/drivers/staging/media/sunxi/Makefile b/drivers/staging/media/sunxi/Makefile
index b87140b0e15f..3d20b2f0e644 100644
--- a/drivers/staging/media/sunxi/Makefile
+++ b/drivers/staging/media/sunxi/Makefile
@@ -1,2 +1,3 @@ 
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_VIDEO_SUNXI_CEDRUS)	+= cedrus/
+obj-$(CONFIG_VIDEO_SUN6I_ISP)		+= sun6i-isp/
diff --git a/drivers/staging/media/sunxi/sun6i-isp/Kconfig b/drivers/staging/media/sunxi/sun6i-isp/Kconfig
new file mode 100644
index 000000000000..4a259c4e0046
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/Kconfig
@@ -0,0 +1,13 @@ 
+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_SUN6I_ISP
+	tristate "Allwinner A31 Image Signal Processor (ISP) Driver"
+	depends on ARCH_SUNXI || COMPILE_TEST
+	depends on PM && COMMON_CLK && VIDEO_DEV && VIDEO_V4L2
+	depends on HAS_DMA
+	select REGMAP_MMIO
+	select MEDIA_CONTROLLER
+	select VIDEOBUF2_DMA_CONTIG
+	select VIDEOBUF2_VMALLOC
+	select V4L2_MEM2MEM_DEV
+	help
+	   Support for the Allwinner A31 Image Signal Processor (ISP).
diff --git a/drivers/staging/media/sunxi/sun6i-isp/Makefile b/drivers/staging/media/sunxi/sun6i-isp/Makefile
new file mode 100644
index 000000000000..da1034785144
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/Makefile
@@ -0,0 +1,4 @@ 
+# SPDX-License-Identifier: GPL-2.0-only
+sun6i-isp-y += sun6i_isp.o sun6i_isp_proc.o sun6i_isp_capture.o sun6i_isp_params.o
+
+obj-$(CONFIG_VIDEO_SUN6I_ISP) += sun6i-isp.o
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.c
new file mode 100644
index 000000000000..417619752a5e
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.c
@@ -0,0 +1,577 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mc.h>
+
+#include "sun6i_isp.h"
+#include "sun6i_isp_capture.h"
+#include "sun6i_isp_params.h"
+#include "sun6i_isp_proc.h"
+#include "sun6i_isp_reg.h"
+
+/* Helpers */
+
+u32 sun6i_isp_load_read(struct sun6i_isp_device *isp_dev, u32 offset)
+{
+	u32 *data = (u32 *)(isp_dev->tables.load.data + offset);
+
+	return *data;
+}
+
+void sun6i_isp_load_write(struct sun6i_isp_device *isp_dev, u32 offset,
+			  u32 value)
+{
+	u32 *data = (u32 *)(isp_dev->tables.load.data + offset);
+
+	*data = value;
+}
+
+/* State */
+
+/*
+ * The ISP works with a load buffer, which gets copied to the actual registers
+ * by the hardware before processing a frame when a specific flag is set.
+ * This is represented by tracking the ISP state in the different parts of
+ * the code with explicit sync points:
+ * - state update: to update the load buffer for the next frame if necessary;
+ * - state complete: to indicate that the state update was applied.
+ */
+
+static void sun6i_isp_state_ready(struct sun6i_isp_device *isp_dev)
+{
+	struct regmap *regmap = isp_dev->regmap;
+	u32 value;
+
+	regmap_read(regmap, SUN6I_ISP_FE_CTRL_REG, &value);
+	value |= SUN6I_ISP_FE_CTRL_PARA_READY;
+	regmap_write(regmap, SUN6I_ISP_FE_CTRL_REG, value);
+}
+
+static void sun6i_isp_state_complete(struct sun6i_isp_device *isp_dev)
+{
+	spinlock_t *state_lock = &isp_dev->state_lock;
+	unsigned long flags;
+
+	spin_lock_irqsave(state_lock, flags);
+
+	sun6i_isp_capture_state_complete(isp_dev);
+	sun6i_isp_params_state_complete(isp_dev);
+
+	spin_unlock_irqrestore(state_lock, flags);
+}
+
+void sun6i_isp_state_update(struct sun6i_isp_device *isp_dev, bool ready_hold)
+{
+	spinlock_t *state_lock = &isp_dev->state_lock;
+	bool update = false;
+	unsigned long flags;
+
+	spin_lock_irqsave(state_lock, flags);
+
+	sun6i_isp_capture_state_update(isp_dev, &update);
+	sun6i_isp_params_state_update(isp_dev, &update);
+
+	if (update && !ready_hold)
+		sun6i_isp_state_ready(isp_dev);
+
+	spin_unlock_irqrestore(state_lock, flags);
+}
+
+/* Tables */
+
+static int sun6i_isp_table_setup(struct sun6i_isp_device *isp_dev,
+				 struct sun6i_isp_table *table)
+{
+	table->data = dma_alloc_coherent(isp_dev->dev, table->size,
+					 &table->address, GFP_KERNEL);
+	if (!table->data)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void sun6i_isp_table_cleanup(struct sun6i_isp_device *isp_dev,
+				    struct sun6i_isp_table *table)
+{
+	dma_free_coherent(isp_dev->dev, table->size, table->data,
+			  table->address);
+}
+
+void sun6i_isp_tables_configure(struct sun6i_isp_device *isp_dev)
+{
+	struct regmap *regmap = isp_dev->regmap;
+
+	regmap_write(regmap, SUN6I_ISP_REG_LOAD_ADDR_REG,
+		     SUN6I_ISP_ADDR_VALUE(isp_dev->tables.load.address));
+
+	regmap_write(regmap, SUN6I_ISP_REG_SAVE_ADDR_REG,
+		     SUN6I_ISP_ADDR_VALUE(isp_dev->tables.save.address));
+
+	regmap_write(regmap, SUN6I_ISP_LUT_TABLE_ADDR_REG,
+		     SUN6I_ISP_ADDR_VALUE(isp_dev->tables.lut.address));
+
+	regmap_write(regmap, SUN6I_ISP_DRC_TABLE_ADDR_REG,
+		     SUN6I_ISP_ADDR_VALUE(isp_dev->tables.drc.address));
+
+	regmap_write(regmap, SUN6I_ISP_STATS_ADDR_REG,
+		     SUN6I_ISP_ADDR_VALUE(isp_dev->tables.stats.address));
+}
+
+static int sun6i_isp_tables_setup(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_tables *tables = &isp_dev->tables;
+	int ret;
+
+	/* Sizes are hardcoded for now but actually depend on the platform. */
+
+	tables->load.size = 0x1000;
+	ret = sun6i_isp_table_setup(isp_dev, &tables->load);
+	if (ret)
+		return ret;
+
+	tables->save.size = 0x1000;
+	ret = sun6i_isp_table_setup(isp_dev, &tables->save);
+	if (ret)
+		return ret;
+
+	tables->lut.size = 0xe00;
+	ret = sun6i_isp_table_setup(isp_dev, &tables->lut);
+	if (ret)
+		return ret;
+
+	tables->drc.size = 0x600;
+	ret = sun6i_isp_table_setup(isp_dev, &tables->drc);
+	if (ret)
+		return ret;
+
+	tables->stats.size = 0x2100;
+	ret = sun6i_isp_table_setup(isp_dev, &tables->stats);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void sun6i_isp_tables_cleanup(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_tables *tables = &isp_dev->tables;
+
+	sun6i_isp_table_cleanup(isp_dev, &tables->stats);
+	sun6i_isp_table_cleanup(isp_dev, &tables->drc);
+	sun6i_isp_table_cleanup(isp_dev, &tables->lut);
+	sun6i_isp_table_cleanup(isp_dev, &tables->save);
+	sun6i_isp_table_cleanup(isp_dev, &tables->load);
+}
+
+/* Media */
+
+static const struct media_device_ops sun6i_isp_media_ops = {
+	.link_notify = v4l2_pipeline_link_notify,
+};
+
+/* V4L2 */
+
+static int sun6i_isp_v4l2_setup(struct sun6i_isp_device *isp_dev)
+{
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	struct v4l2_ctrl_handler *ctrl_handler = &isp_dev->v4l2.ctrl_handler;
+	struct media_device *media_dev = &isp_dev->v4l2.media_dev;
+	struct device *dev = isp_dev->dev;
+	int ret;
+
+	/* Media Device */
+
+	strscpy(media_dev->model, SUN6I_ISP_DESCRIPTION,
+		sizeof(media_dev->model));
+	snprintf(media_dev->bus_info, sizeof(media_dev->bus_info),
+		 "platform:%s", dev_name(dev));
+	media_dev->ops = &sun6i_isp_media_ops;
+	media_dev->hw_revision = 0;
+	media_dev->dev = dev;
+
+	media_device_init(media_dev);
+
+	ret = media_device_register(media_dev);
+	if (ret) {
+		dev_err(dev, "failed to register media device\n");
+		return ret;
+	}
+
+	/* V4L2 Control Handler */
+
+	ret = v4l2_ctrl_handler_init(ctrl_handler, 0);
+	if (ret) {
+		dev_err(dev, "failed to init v4l2 control handler\n");
+		goto error_media;
+	}
+
+	/* V4L2 Device */
+
+	v4l2_dev->mdev = media_dev;
+	v4l2_dev->ctrl_handler = ctrl_handler;
+
+	ret = v4l2_device_register(dev, v4l2_dev);
+	if (ret) {
+		dev_err(dev, "failed to register v4l2 device\n");
+		goto error_v4l2_ctrl;
+	}
+
+	return 0;
+
+error_v4l2_ctrl:
+	v4l2_ctrl_handler_free(ctrl_handler);
+
+error_media:
+	media_device_unregister(media_dev);
+	media_device_cleanup(media_dev);
+
+	return ret;
+}
+
+static void sun6i_isp_v4l2_cleanup(struct sun6i_isp_device *isp_dev)
+{
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	struct v4l2_ctrl_handler *ctrl_handler = &isp_dev->v4l2.ctrl_handler;
+	struct media_device *media_dev = &isp_dev->v4l2.media_dev;
+
+	v4l2_device_unregister(v4l2_dev);
+	v4l2_ctrl_handler_free(ctrl_handler);
+
+	media_device_unregister(media_dev);
+	media_device_cleanup(media_dev);
+}
+
+/* Platform */
+
+static irqreturn_t sun6i_isp_isr(int irq, void *private)
+{
+	struct sun6i_isp_device *isp_dev = private;
+	struct regmap *regmap = isp_dev->regmap;
+	u32 status = 0, enable = 0;
+
+	regmap_read(regmap, SUN6I_ISP_FE_INT_STA_REG, &status);
+	regmap_read(regmap, SUN6I_ISP_FE_INT_EN_REG, &enable);
+
+	if (!status)
+		return IRQ_NONE;
+	else if (!(status & enable))
+		goto complete;
+
+	/*
+	 * The ISP working cycle starts with a params-load, which makes the
+	 * state from the load buffer active. Then it starts processing the
+	 * frame and gives a finish interrupt. Soon after that, the next state
+	 * coming from the load buffer will be applied for the next frame,
+	 * giving a params-load as well.
+	 *
+	 * Because both frame finish and params-load are received almost
+	 * at the same time (one ISR call), handle them in chronology order.
+	 */
+
+	if (status & SUN6I_ISP_FE_INT_STA_FINISH)
+		sun6i_isp_capture_finish(isp_dev);
+
+	if (status & SUN6I_ISP_FE_INT_STA_PARA_LOAD) {
+		sun6i_isp_state_complete(isp_dev);
+		sun6i_isp_state_update(isp_dev, false);
+	}
+
+complete:
+	regmap_write(regmap, SUN6I_ISP_FE_INT_STA_REG, status);
+
+	return IRQ_HANDLED;
+}
+
+static int sun6i_isp_suspend(struct device *dev)
+{
+	struct sun6i_isp_device *isp_dev = dev_get_drvdata(dev);
+
+	reset_control_assert(isp_dev->reset);
+	clk_disable_unprepare(isp_dev->clk_ram);
+	clk_disable_unprepare(isp_dev->clk_mod);
+	clk_disable_unprepare(isp_dev->clk_bus);
+
+	return 0;
+}
+
+static int sun6i_isp_resume(struct device *dev)
+{
+	struct sun6i_isp_device *isp_dev = dev_get_drvdata(dev);
+	int ret;
+
+	ret = reset_control_deassert(isp_dev->reset);
+	if (ret) {
+		dev_err(dev, "failed to deassert reset\n");
+		return ret;
+	}
+
+	ret = clk_prepare_enable(isp_dev->clk_bus);
+	if (ret) {
+		dev_err(dev, "failed to enable bus clock\n");
+		goto error_reset;
+	}
+
+	ret = clk_prepare_enable(isp_dev->clk_mod);
+	if (ret) {
+		dev_err(dev, "failed to enable module clock\n");
+		goto error_clk_bus;
+	}
+
+	ret = clk_prepare_enable(isp_dev->clk_ram);
+	if (ret) {
+		dev_err(dev, "failed to enable ram clock\n");
+		goto error_clk_mod;
+	}
+
+	return 0;
+
+error_clk_mod:
+	clk_disable_unprepare(isp_dev->clk_mod);
+
+error_clk_bus:
+	clk_disable_unprepare(isp_dev->clk_bus);
+
+error_reset:
+	reset_control_assert(isp_dev->reset);
+
+	return ret;
+}
+
+static const struct dev_pm_ops sun6i_isp_pm_ops = {
+	SET_RUNTIME_PM_OPS(sun6i_isp_suspend, sun6i_isp_resume, NULL)
+};
+
+static const struct regmap_config sun6i_isp_regmap_config = {
+	.reg_bits       = 32,
+	.reg_stride     = 4,
+	.val_bits       = 32,
+	.max_register	= 0x400,
+};
+
+static int sun6i_isp_resources_setup(struct sun6i_isp_device *isp_dev,
+				     struct platform_device *platform_dev)
+{
+	struct device *dev = isp_dev->dev;
+	struct resource *res;
+	void __iomem *io_base;
+	int irq;
+	int ret;
+
+	/* Registers */
+
+	res = platform_get_resource(platform_dev, IORESOURCE_MEM, 0);
+	io_base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(io_base))
+		return PTR_ERR(io_base);
+
+	isp_dev->regmap = devm_regmap_init_mmio(dev, io_base,
+						&sun6i_isp_regmap_config);
+	if (IS_ERR(isp_dev->regmap)) {
+		dev_err(dev, "failed to init register map\n");
+		return PTR_ERR(isp_dev->regmap);
+	}
+
+	/* Clocks */
+
+	isp_dev->clk_bus = devm_clk_get(dev, "bus");
+	if (IS_ERR(isp_dev->clk_bus)) {
+		dev_err(dev, "failed to acquire bus clock\n");
+		return PTR_ERR(isp_dev->clk_bus);
+	}
+
+	isp_dev->clk_mod = devm_clk_get(dev, "mod");
+	if (IS_ERR(isp_dev->clk_mod)) {
+		dev_err(dev, "failed to acquire module clock\n");
+		return PTR_ERR(isp_dev->clk_mod);
+	}
+
+	isp_dev->clk_ram = devm_clk_get(dev, "ram");
+	if (IS_ERR(isp_dev->clk_ram)) {
+		dev_err(dev, "failed to acquire ram clock\n");
+		return PTR_ERR(isp_dev->clk_ram);
+	}
+
+	ret = clk_set_rate_exclusive(isp_dev->clk_mod, 297000000);
+	if (ret) {
+		dev_err(dev, "failed to set mod clock rate\n");
+		return ret;
+	}
+
+	/* Reset */
+
+	isp_dev->reset = devm_reset_control_get_shared(dev, NULL);
+	if (IS_ERR(isp_dev->reset)) {
+		dev_err(dev, "failed to acquire reset\n");
+		ret = PTR_ERR(isp_dev->reset);
+		goto error_clk_rate_exclusive;
+	}
+
+	/* Interrupt */
+
+	irq = platform_get_irq(platform_dev, 0);
+	if (irq < 0) {
+		dev_err(dev, "failed to get interrupt\n");
+		ret = -ENXIO;
+		goto error_clk_rate_exclusive;
+	}
+
+	ret = devm_request_irq(dev, irq, sun6i_isp_isr, IRQF_SHARED,
+			       SUN6I_ISP_NAME, isp_dev);
+	if (ret) {
+		dev_err(dev, "failed to request interrupt\n");
+		goto error_clk_rate_exclusive;
+	}
+
+	/* Runtime PM */
+
+	pm_runtime_enable(dev);
+	pm_runtime_set_suspended(dev);
+
+	return 0;
+
+error_clk_rate_exclusive:
+	clk_rate_exclusive_put(isp_dev->clk_mod);
+
+	return ret;
+}
+
+static void sun6i_isp_resources_cleanup(struct sun6i_isp_device *isp_dev)
+{
+	struct device *dev = isp_dev->dev;
+
+	pm_runtime_disable(dev);
+	clk_rate_exclusive_put(isp_dev->clk_mod);
+}
+
+static int sun6i_isp_probe(struct platform_device *platform_dev)
+{
+	struct sun6i_isp_device *isp_dev;
+	struct device *dev = &platform_dev->dev;
+	int ret;
+
+	isp_dev = devm_kzalloc(dev, sizeof(*isp_dev), GFP_KERNEL);
+	if (!isp_dev)
+		return -ENOMEM;
+
+	isp_dev->dev = dev;
+	platform_set_drvdata(platform_dev, isp_dev);
+
+	spin_lock_init(&isp_dev->state_lock);
+
+	ret = sun6i_isp_resources_setup(isp_dev, platform_dev);
+	if (ret)
+		return ret;
+
+	ret = sun6i_isp_tables_setup(isp_dev);
+	if (ret) {
+		dev_err(dev, "failed to setup tables\n");
+		goto error_resources;
+	}
+
+	ret = sun6i_isp_v4l2_setup(isp_dev);
+	if (ret) {
+		dev_err(dev, "failed to setup v4l2\n");
+		goto error_tables;
+	}
+
+	ret = sun6i_isp_proc_setup(isp_dev);
+	if (ret) {
+		dev_err(dev, "failed to setup proc\n");
+		goto error_v4l2;
+	}
+
+	ret = sun6i_isp_capture_setup(isp_dev);
+	if (ret) {
+		dev_err(dev, "failed to setup capture\n");
+		goto error_proc;
+	}
+
+	ret = sun6i_isp_params_setup(isp_dev);
+	if (ret) {
+		dev_err(dev, "failed to setup params\n");
+		goto error_capture;
+	}
+
+	return 0;
+
+error_capture:
+	sun6i_isp_capture_cleanup(isp_dev);
+
+error_proc:
+	sun6i_isp_proc_cleanup(isp_dev);
+
+error_v4l2:
+	sun6i_isp_v4l2_cleanup(isp_dev);
+
+error_tables:
+	sun6i_isp_tables_cleanup(isp_dev);
+
+error_resources:
+	sun6i_isp_resources_cleanup(isp_dev);
+
+	return ret;
+}
+
+static int sun6i_isp_remove(struct platform_device *platform_dev)
+{
+	struct sun6i_isp_device *isp_dev = platform_get_drvdata(platform_dev);
+
+	sun6i_isp_params_cleanup(isp_dev);
+	sun6i_isp_capture_cleanup(isp_dev);
+	sun6i_isp_proc_cleanup(isp_dev);
+	sun6i_isp_v4l2_cleanup(isp_dev);
+	sun6i_isp_tables_cleanup(isp_dev);
+	sun6i_isp_resources_cleanup(isp_dev);
+
+	return 0;
+}
+
+/*
+ * History of sun6i-isp:
+ * - sun4i-a10-isp: initial ISP tied to the CSI0 controller,
+ *   apparently unused in software implementations;
+ * - sun6i-a31-isp: separate ISP loosely based on sun4i-a10-isp,
+ *   adding extra modules and features;
+ * - sun9i-a80-isp: based on sun6i-a31-isp with some register offset changes
+ *   and new modules like saturation and cnr;
+ * - sun8i-a23-isp/sun8i-h3-isp: based on sun9i-a80-isp with most modules
+ *   related to raw removed;
+ * - sun8i-a83t-isp: based on sun9i-a80-isp with some register offset changes
+ * - sun8i-v3s-isp: based on sun8i-a83t-isp with a new disc module;
+ */
+
+static const struct of_device_id sun6i_isp_of_match[] = {
+	{ .compatible = "allwinner,sun8i-v3s-isp" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, sun6i_isp_of_match);
+
+static struct platform_driver sun6i_isp_platform_driver = {
+	.probe = sun6i_isp_probe,
+	.remove = sun6i_isp_remove,
+	.driver = {
+		.name = SUN6I_ISP_NAME,
+		.of_match_table = of_match_ptr(sun6i_isp_of_match),
+		.pm = &sun6i_isp_pm_ops,
+	},
+};
+module_platform_driver(sun6i_isp_platform_driver);
+
+MODULE_DESCRIPTION("Allwinner A31 Image Signal Processor Driver");
+MODULE_AUTHOR("Paul Kocialkowski <paul.kocialkowski@bootlin.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.h b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.h
new file mode 100644
index 000000000000..9d9a0640f850
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.h
@@ -0,0 +1,86 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_ISP_H_
+#define _SUN6I_ISP_H_
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/videobuf2-v4l2.h>
+
+#include "sun6i_isp_capture.h"
+#include "sun6i_isp_params.h"
+#include "sun6i_isp_proc.h"
+
+#define SUN6I_ISP_NAME			"sun6i-isp"
+#define SUN6I_ISP_DESCRIPTION		"Allwinner ISP Capture Device"
+
+enum sun6i_isp_port {
+	SUN6I_ISP_PORT_CSI0	= 0,
+	SUN6I_ISP_PORT_CSI1	= 1,
+};
+
+struct sun6i_isp_buffer {
+	struct vb2_v4l2_buffer	v4l2_buffer;
+	struct list_head	list;
+};
+
+struct sun6i_isp_v4l2 {
+	struct v4l2_device		v4l2_dev;
+	struct v4l2_ctrl_handler	ctrl_handler;
+	struct media_device		media_dev;
+};
+
+struct sun6i_isp_table {
+	void		*data;
+	dma_addr_t	address;
+	unsigned int	size;
+};
+
+struct sun6i_isp_tables {
+	struct sun6i_isp_table	load;
+	struct sun6i_isp_table	save;
+
+	struct sun6i_isp_table	lut;
+	struct sun6i_isp_table	drc;
+	struct sun6i_isp_table	stats;
+};
+
+struct sun6i_isp_device {
+	struct device			*dev;
+
+	struct regmap			*regmap;
+	struct clk			*clk_bus;
+	struct clk			*clk_mod;
+	struct clk			*clk_ram;
+	struct reset_control		*reset;
+
+	struct sun6i_isp_tables		tables;
+
+	struct sun6i_isp_v4l2		v4l2;
+	struct sun6i_isp_proc		proc;
+	struct sun6i_isp_capture	capture;
+	struct sun6i_isp_params		params;
+
+	spinlock_t			state_lock; /* State helpers lock. */
+};
+
+/* Helpers */
+
+u32 sun6i_isp_load_read(struct sun6i_isp_device *isp_dev, u32 offset);
+void sun6i_isp_load_write(struct sun6i_isp_device *isp_dev, u32 offset,
+			  u32 value);
+u32 sun6i_isp_address_value(dma_addr_t address);
+
+/* State */
+
+void sun6i_isp_state_update(struct sun6i_isp_device *isp_dev, bool ready_hold);
+
+/* Tables */
+
+void sun6i_isp_tables_configure(struct sun6i_isp_device *isp_dev);
+
+#endif
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
new file mode 100644
index 000000000000..148841d77c21
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
@@ -0,0 +1,759 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <linux/pm_runtime.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mc.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/videobuf2-v4l2.h>
+
+#include "sun6i_isp.h"
+#include "sun6i_isp_capture.h"
+#include "sun6i_isp_proc.h"
+#include "sun6i_isp_reg.h"
+
+/* Helpers */
+
+void sun6i_isp_capture_dimensions(struct sun6i_isp_device *isp_dev,
+				  unsigned int *width, unsigned int *height)
+{
+	if (width)
+		*width = isp_dev->capture.format.fmt.pix.width;
+	if (height)
+		*height = isp_dev->capture.format.fmt.pix.height;
+}
+
+void sun6i_isp_capture_format(struct sun6i_isp_device *isp_dev,
+			      u32 *pixelformat)
+{
+	if (pixelformat)
+		*pixelformat = isp_dev->capture.format.fmt.pix.pixelformat;
+}
+
+/* Format */
+
+static const struct sun6i_isp_capture_format sun6i_isp_capture_formats[] = {
+	{
+		.pixelformat		= V4L2_PIX_FMT_NV12,
+		.output_format		= SUN6I_ISP_OUTPUT_FMT_YUV420SP,
+	},
+	{
+		.pixelformat		= V4L2_PIX_FMT_NV21,
+		.output_format		= SUN6I_ISP_OUTPUT_FMT_YVU420SP,
+	},
+};
+
+const struct sun6i_isp_capture_format *
+sun6i_isp_capture_format_find(u32 pixelformat)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(sun6i_isp_capture_formats); i++)
+		if (sun6i_isp_capture_formats[i].pixelformat == pixelformat)
+			return &sun6i_isp_capture_formats[i];
+
+	return NULL;
+}
+
+/* Capture */
+
+static void
+sun6i_isp_capture_buffer_configure(struct sun6i_isp_device *isp_dev,
+				   struct sun6i_isp_buffer *isp_buffer)
+{
+	const struct v4l2_format_info *info;
+	struct vb2_buffer *vb2_buffer;
+	unsigned int width, height;
+	unsigned int width_aligned;
+	dma_addr_t address;
+	u32 pixelformat;
+
+	vb2_buffer = &isp_buffer->v4l2_buffer.vb2_buf;
+	address = vb2_dma_contig_plane_dma_addr(vb2_buffer, 0);
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_MCH_Y_ADDR0_REG,
+			     SUN6I_ISP_ADDR_VALUE(address));
+
+	sun6i_isp_capture_dimensions(isp_dev, &width, &height);
+	sun6i_isp_capture_format(isp_dev, &pixelformat);
+
+	info = v4l2_format_info(pixelformat);
+	if (WARN_ON(!info))
+		return;
+
+	/* Stride needs to be aligned to 4. */
+	width_aligned = ALIGN(width, 2);
+
+	if (info->comp_planes > 1) {
+		address += info->bpp[0] * width_aligned * height;
+
+		sun6i_isp_load_write(isp_dev, SUN6I_ISP_MCH_U_ADDR0_REG,
+				     SUN6I_ISP_ADDR_VALUE(address));
+	}
+
+	if (info->comp_planes > 2) {
+		address += info->bpp[1] *
+			   DIV_ROUND_UP(width_aligned, info->hdiv) *
+			   DIV_ROUND_UP(height, info->vdiv);
+
+		sun6i_isp_load_write(isp_dev, SUN6I_ISP_MCH_V_ADDR0_REG,
+				     SUN6I_ISP_ADDR_VALUE(address));
+	}
+}
+
+void sun6i_isp_capture_configure(struct sun6i_isp_device *isp_dev)
+{
+	unsigned int width, height;
+	unsigned int stride_luma, stride_chroma = 0;
+	unsigned int stride_luma_div4, stride_chroma_div4;
+	const struct sun6i_isp_capture_format *format;
+	const struct v4l2_format_info *info;
+	u32 pixelformat;
+
+	sun6i_isp_capture_dimensions(isp_dev, &width, &height);
+	sun6i_isp_capture_format(isp_dev, &pixelformat);
+
+	format = sun6i_isp_capture_format_find(pixelformat);
+	if (WARN_ON(!format))
+		return;
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_MCH_SIZE_CFG_REG,
+			     SUN6I_ISP_MCH_SIZE_CFG_WIDTH(width) |
+			     SUN6I_ISP_MCH_SIZE_CFG_HEIGHT(height));
+
+	info = v4l2_format_info(pixelformat);
+	if (WARN_ON(!info))
+		return;
+
+	stride_luma = width * info->bpp[0];
+	stride_luma_div4 = DIV_ROUND_UP(stride_luma, 4);
+
+	if (info->comp_planes > 1) {
+		stride_chroma = width * info->bpp[1] / info->hdiv;
+		stride_chroma_div4 = DIV_ROUND_UP(stride_chroma, 4);
+	}
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_MCH_CFG_REG,
+			     SUN6I_ISP_MCH_CFG_EN |
+			     SUN6I_ISP_MCH_CFG_OUTPUT_FMT(format->output_format) |
+			     SUN6I_ISP_MCH_CFG_STRIDE_Y_DIV4(stride_luma_div4) |
+			     SUN6I_ISP_MCH_CFG_STRIDE_UV_DIV4(stride_chroma_div4));
+}
+
+/* State */
+
+static void sun6i_isp_capture_state_cleanup(struct sun6i_isp_device *isp_dev,
+					    bool error)
+{
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	struct sun6i_isp_buffer **isp_buffer_states[] = {
+		&state->pending, &state->current, &state->complete,
+	};
+	struct sun6i_isp_buffer *isp_buffer;
+	struct vb2_buffer *vb2_buffer;
+	unsigned long flags;
+	unsigned int i;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	for (i = 0; i < ARRAY_SIZE(isp_buffer_states); i++) {
+		isp_buffer = *isp_buffer_states[i];
+		if (!isp_buffer)
+			continue;
+
+		vb2_buffer = &isp_buffer->v4l2_buffer.vb2_buf;
+		vb2_buffer_done(vb2_buffer, error ? VB2_BUF_STATE_ERROR :
+				VB2_BUF_STATE_QUEUED);
+
+		*isp_buffer_states[i] = NULL;
+	}
+
+	list_for_each_entry(isp_buffer, &state->queue, list) {
+		vb2_buffer = &isp_buffer->v4l2_buffer.vb2_buf;
+		vb2_buffer_done(vb2_buffer, error ? VB2_BUF_STATE_ERROR :
+				VB2_BUF_STATE_QUEUED);
+	}
+
+	INIT_LIST_HEAD(&state->queue);
+
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_isp_capture_state_update(struct sun6i_isp_device *isp_dev,
+				    bool *update)
+{
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	struct sun6i_isp_buffer *isp_buffer;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (list_empty(&state->queue))
+		goto complete;
+
+	if (state->pending)
+		goto complete;
+
+	isp_buffer = list_first_entry(&state->queue, struct sun6i_isp_buffer,
+				      list);
+
+	sun6i_isp_capture_buffer_configure(isp_dev, isp_buffer);
+
+	list_del(&isp_buffer->list);
+
+	state->pending = isp_buffer;
+
+	if (update)
+		*update = true;
+
+complete:
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_isp_capture_state_complete(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (!state->pending)
+		goto complete;
+
+	state->complete = state->current;
+	state->current = state->pending;
+	state->pending = NULL;
+
+	if (state->complete) {
+		struct sun6i_isp_buffer *isp_buffer = state->complete;
+		struct vb2_buffer *vb2_buffer =
+			&isp_buffer->v4l2_buffer.vb2_buf;
+
+		vb2_buffer->timestamp = ktime_get_ns();
+		isp_buffer->v4l2_buffer.sequence = state->sequence;
+
+		vb2_buffer_done(vb2_buffer, VB2_BUF_STATE_DONE);
+
+		state->complete = NULL;
+	}
+
+complete:
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_isp_capture_finish(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+	state->sequence++;
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+/* Queue */
+
+static int sun6i_isp_capture_queue_setup(struct vb2_queue *queue,
+					 unsigned int *buffers_count,
+					 unsigned int *planes_count,
+					 unsigned int sizes[],
+					 struct device *alloc_devs[])
+{
+	struct sun6i_isp_device *isp_dev = vb2_get_drv_priv(queue);
+	unsigned int size = isp_dev->capture.format.fmt.pix.sizeimage;
+
+	if (*planes_count)
+		return sizes[0] < size ? -EINVAL : 0;
+
+	*planes_count = 1;
+	sizes[0] = size;
+
+	return 0;
+}
+
+static int sun6i_isp_capture_buffer_prepare(struct vb2_buffer *vb2_buffer)
+{
+	struct sun6i_isp_device *isp_dev =
+		vb2_get_drv_priv(vb2_buffer->vb2_queue);
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	unsigned int size = isp_dev->capture.format.fmt.pix.sizeimage;
+
+	if (vb2_plane_size(vb2_buffer, 0) < size) {
+		v4l2_err(v4l2_dev, "buffer too small (%lu < %u)\n",
+			 vb2_plane_size(vb2_buffer, 0), size);
+		return -EINVAL;
+	}
+
+	vb2_set_plane_payload(vb2_buffer, 0, size);
+
+	return 0;
+}
+
+static void sun6i_isp_capture_buffer_queue(struct vb2_buffer *vb2_buffer)
+{
+	struct sun6i_isp_device *isp_dev =
+		vb2_get_drv_priv(vb2_buffer->vb2_queue);
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	struct vb2_v4l2_buffer *v4l2_buffer = to_vb2_v4l2_buffer(vb2_buffer);
+	struct sun6i_isp_buffer *isp_buffer =
+		container_of(v4l2_buffer, struct sun6i_isp_buffer, v4l2_buffer);
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+	list_add_tail(&isp_buffer->list, &state->queue);
+	spin_unlock_irqrestore(&state->lock, flags);
+
+	/* Update the state to schedule our buffer as soon as possible. */
+	if (state->streaming)
+		sun6i_isp_state_update(isp_dev, false);
+}
+
+static int sun6i_isp_capture_start_streaming(struct vb2_queue *queue,
+					     unsigned int count)
+{
+	struct sun6i_isp_device *isp_dev = vb2_get_drv_priv(queue);
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	struct video_device *video_dev = &isp_dev->capture.video_dev;
+	struct v4l2_subdev *subdev = &isp_dev->proc.subdev;
+	struct device *dev = isp_dev->dev;
+	int ret;
+
+	ret = media_pipeline_start(&video_dev->entity, &video_dev->pipe);
+	if (ret < 0)
+		goto error_state;
+
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret < 0)
+		goto error_media_pipeline;
+
+	state->streaming = true;
+
+	ret = v4l2_subdev_call(subdev, video, s_stream, 1);
+	if (ret && ret != -ENOIOCTLCMD)
+		goto error_streaming;
+
+	return 0;
+
+error_streaming:
+	state->streaming = false;
+
+	pm_runtime_put(dev);
+
+error_media_pipeline:
+	media_pipeline_stop(&video_dev->entity);
+
+error_state:
+	sun6i_isp_capture_state_cleanup(isp_dev, false);
+
+	isp_dev->proc.source = NULL;
+
+	return ret;
+}
+
+static void sun6i_isp_capture_stop_streaming(struct vb2_queue *queue)
+{
+	struct sun6i_isp_device *isp_dev = vb2_get_drv_priv(queue);
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	struct video_device *video_dev = &isp_dev->capture.video_dev;
+	struct v4l2_subdev *subdev = &isp_dev->proc.subdev;
+	struct device *dev = isp_dev->dev;
+
+	v4l2_subdev_call(subdev, video, s_stream, 0);
+
+	state->streaming = false;
+
+	pm_runtime_put(dev);
+
+	media_pipeline_stop(&video_dev->entity);
+
+	sun6i_isp_capture_state_cleanup(isp_dev, true);
+}
+
+static const struct vb2_ops sun6i_isp_capture_queue_ops = {
+	.queue_setup		= sun6i_isp_capture_queue_setup,
+	.buf_prepare		= sun6i_isp_capture_buffer_prepare,
+	.buf_queue		= sun6i_isp_capture_buffer_queue,
+	.start_streaming	= sun6i_isp_capture_start_streaming,
+	.stop_streaming		= sun6i_isp_capture_stop_streaming,
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
+};
+
+/* Video Device */
+
+static void sun6i_isp_capture_format_prepare(struct v4l2_format *format)
+{
+	struct v4l2_pix_format *pix_format = &format->fmt.pix;
+	const struct v4l2_format_info *info;
+	unsigned int width, height;
+	unsigned int width_aligned;
+	unsigned int i;
+
+	v4l_bound_align_image(&pix_format->width, SUN6I_ISP_CAPTURE_WIDTH_MIN,
+			      SUN6I_ISP_CAPTURE_WIDTH_MAX, 1,
+			      &pix_format->height, SUN6I_ISP_CAPTURE_HEIGHT_MIN,
+			      SUN6I_ISP_CAPTURE_HEIGHT_MAX, 1, 0);
+
+	if (!sun6i_isp_capture_format_find(pix_format->pixelformat))
+		pix_format->pixelformat =
+			sun6i_isp_capture_formats[0].pixelformat;
+
+	info = v4l2_format_info(pix_format->pixelformat);
+	if (WARN_ON(!info))
+		return;
+
+	width = pix_format->width;
+	height = pix_format->height;
+
+	/* Stride needs to be aligned to 4. */
+	width_aligned = ALIGN(width, 2);
+
+	pix_format->bytesperline = width_aligned * info->bpp[0];
+	pix_format->sizeimage = 0;
+
+	for (i = 0; i < info->comp_planes; i++) {
+		unsigned int hdiv = (i == 0) ? 1 : info->hdiv;
+		unsigned int vdiv = (i == 0) ? 1 : info->vdiv;
+
+		pix_format->sizeimage += info->bpp[i] *
+					 DIV_ROUND_UP(width_aligned, hdiv) *
+					 DIV_ROUND_UP(height, vdiv);
+	}
+
+	pix_format->field = V4L2_FIELD_NONE;
+
+	pix_format->colorspace = V4L2_COLORSPACE_RAW;
+	pix_format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+	pix_format->quantization = V4L2_QUANTIZATION_DEFAULT;
+	pix_format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
+}
+
+static int sun6i_isp_capture_querycap(struct file *file, void *private,
+				      struct v4l2_capability *capability)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+	struct video_device *video_dev = &isp_dev->capture.video_dev;
+
+	strscpy(capability->driver, SUN6I_ISP_NAME, sizeof(capability->driver));
+	strscpy(capability->card, video_dev->name, sizeof(capability->card));
+	snprintf(capability->bus_info, sizeof(capability->bus_info),
+		 "platform:%s", dev_name(isp_dev->dev));
+
+	return 0;
+}
+
+static int sun6i_isp_capture_enum_fmt(struct file *file, void *private,
+				      struct v4l2_fmtdesc *fmtdesc)
+{
+	u32 index = fmtdesc->index;
+
+	if (index >= ARRAY_SIZE(sun6i_isp_capture_formats))
+		return -EINVAL;
+
+	fmtdesc->pixelformat = sun6i_isp_capture_formats[index].pixelformat;
+
+	return 0;
+}
+
+static int sun6i_isp_capture_g_fmt(struct file *file, void *private,
+				   struct v4l2_format *format)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+
+	*format = isp_dev->capture.format;
+
+	return 0;
+}
+
+static int sun6i_isp_capture_s_fmt(struct file *file, void *private,
+				   struct v4l2_format *format)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+
+	if (vb2_is_busy(&isp_dev->capture.queue))
+		return -EBUSY;
+
+	sun6i_isp_capture_format_prepare(format);
+
+	isp_dev->capture.format = *format;
+
+	return 0;
+}
+
+static int sun6i_isp_capture_try_fmt(struct file *file, void *private,
+				     struct v4l2_format *format)
+{
+	sun6i_isp_capture_format_prepare(format);
+
+	return 0;
+}
+
+static int sun6i_isp_capture_enum_input(struct file *file, void *private,
+					struct v4l2_input *input)
+{
+	if (input->index != 0)
+		return -EINVAL;
+
+	input->type = V4L2_INPUT_TYPE_CAMERA;
+	strscpy(input->name, "Camera", sizeof(input->name));
+
+	return 0;
+}
+
+static int sun6i_isp_capture_g_input(struct file *file, void *fh,
+				     unsigned int *index)
+{
+	*index = 0;
+
+	return 0;
+}
+
+static int sun6i_isp_capture_s_input(struct file *file, void *fh,
+				     unsigned int index)
+{
+	if (index != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct v4l2_ioctl_ops sun6i_isp_capture_ioctl_ops = {
+	.vidioc_querycap		= sun6i_isp_capture_querycap,
+
+	.vidioc_enum_fmt_vid_cap	= sun6i_isp_capture_enum_fmt,
+	.vidioc_g_fmt_vid_cap		= sun6i_isp_capture_g_fmt,
+	.vidioc_s_fmt_vid_cap		= sun6i_isp_capture_s_fmt,
+	.vidioc_try_fmt_vid_cap		= sun6i_isp_capture_try_fmt,
+
+	.vidioc_enum_input		= sun6i_isp_capture_enum_input,
+	.vidioc_g_input			= sun6i_isp_capture_g_input,
+	.vidioc_s_input			= sun6i_isp_capture_s_input,
+
+	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
+	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
+	.vidioc_querybuf		= vb2_ioctl_querybuf,
+	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
+	.vidioc_qbuf			= vb2_ioctl_qbuf,
+	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
+	.vidioc_expbuf			= vb2_ioctl_expbuf,
+	.vidioc_streamon		= vb2_ioctl_streamon,
+	.vidioc_streamoff		= vb2_ioctl_streamoff,
+
+	.vidioc_log_status		= v4l2_ctrl_log_status,
+	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+};
+
+static int sun6i_isp_capture_open(struct file *file)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+	struct video_device *video_dev = &isp_dev->capture.video_dev;
+	struct mutex *lock = &isp_dev->capture.lock;
+	int ret;
+
+	if (mutex_lock_interruptible(lock))
+		return -ERESTARTSYS;
+
+	ret = v4l2_pipeline_pm_get(&video_dev->entity);
+	if (ret)
+		goto error_mutex;
+
+	ret = v4l2_fh_open(file);
+	if (ret)
+		goto error_pipeline;
+
+	mutex_unlock(lock);
+
+	return 0;
+
+error_pipeline:
+	v4l2_pipeline_pm_put(&video_dev->entity);
+
+error_mutex:
+	mutex_unlock(lock);
+
+	return ret;
+}
+
+static int sun6i_isp_capture_release(struct file *file)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+	struct video_device *video_dev = &isp_dev->capture.video_dev;
+	struct mutex *lock = &isp_dev->capture.lock;
+
+	mutex_lock(lock);
+
+	_vb2_fop_release(file, NULL);
+	v4l2_pipeline_pm_put(&video_dev->entity);
+
+	mutex_unlock(lock);
+
+	return 0;
+}
+
+static const struct v4l2_file_operations sun6i_isp_capture_fops = {
+	.owner		= THIS_MODULE,
+	.open		= sun6i_isp_capture_open,
+	.release	= sun6i_isp_capture_release,
+	.unlocked_ioctl	= video_ioctl2,
+	.poll		= vb2_fop_poll,
+	.mmap		= vb2_fop_mmap,
+};
+
+/* Media Entity */
+
+static int sun6i_isp_capture_link_validate(struct media_link *link)
+{
+	struct video_device *video_dev =
+		media_entity_to_video_device(link->sink->entity);
+	struct sun6i_isp_device *isp_dev = video_get_drvdata(video_dev);
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	unsigned int capture_width, capture_height;
+	unsigned int proc_width, proc_height;
+
+	sun6i_isp_capture_dimensions(isp_dev, &capture_width, &capture_height);
+	sun6i_isp_proc_dimensions(isp_dev, &proc_width, &proc_height);
+
+	/* No cropping/scaling is supported (yet). */
+	if (capture_width != proc_width || capture_height != proc_height) {
+		v4l2_err(v4l2_dev,
+			 "invalid input/output dimensions: %ux%u/%ux%u\n",
+			 proc_width, proc_height, capture_width,
+			 capture_height);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct media_entity_operations sun6i_isp_capture_entity_ops = {
+	.link_validate	= sun6i_isp_capture_link_validate,
+};
+
+/* Capture */
+
+int sun6i_isp_capture_setup(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_capture_state *state = &isp_dev->capture.state;
+	struct media_pad *pad = &isp_dev->capture.pad;
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	struct v4l2_subdev *subdev = &isp_dev->proc.subdev;
+	struct v4l2_format *format = &isp_dev->capture.format;
+	struct v4l2_pix_format *pix_format = &format->fmt.pix;
+	struct video_device *video_dev = &isp_dev->capture.video_dev;
+	struct vb2_queue *queue = &isp_dev->capture.queue;
+	struct mutex *lock = &isp_dev->capture.lock;
+	int ret;
+
+	mutex_init(lock);
+
+	/* State */
+
+	INIT_LIST_HEAD(&state->queue);
+	spin_lock_init(&state->lock);
+
+	/* Media Entity */
+
+	video_dev->entity.ops = &sun6i_isp_capture_entity_ops;
+
+	/* Media Pads */
+
+	pad->flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
+
+	ret = media_entity_pads_init(&video_dev->entity, 1, pad);
+	if (ret)
+		goto error_mutex;
+
+	/* Queue */
+
+	queue->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	queue->io_modes = VB2_MMAP | VB2_DMABUF;
+	queue->ops = &sun6i_isp_capture_queue_ops;
+	queue->mem_ops = &vb2_dma_contig_memops;
+	queue->min_buffers_needed = 2;
+	queue->buf_struct_size = sizeof(struct sun6i_isp_buffer);
+	queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	queue->lock = lock;
+	queue->dev = isp_dev->dev;
+	queue->drv_priv = isp_dev;
+
+	ret = vb2_queue_init(queue);
+	if (ret) {
+		v4l2_err(v4l2_dev, "failed to initialize vb2 queue: %d\n", ret);
+		goto error_media_entity;
+	}
+
+	/* V4L2 Format */
+
+	format->type = queue->type;
+	pix_format->pixelformat = sun6i_isp_capture_formats[0].pixelformat;
+	pix_format->width = 640;
+	pix_format->height = 480;
+
+	sun6i_isp_capture_format_prepare(format);
+
+	/* Video Device */
+
+	strscpy(video_dev->name, SUN6I_ISP_CAPTURE_NAME,
+		sizeof(video_dev->name));
+	video_dev->device_caps = V4L2_CAP_VIDEO_CAPTURE |
+				 V4L2_CAP_STREAMING;
+	video_dev->vfl_dir = VFL_DIR_RX;
+	video_dev->fops = &sun6i_isp_capture_fops;
+	video_dev->ioctl_ops = &sun6i_isp_capture_ioctl_ops;
+	video_dev->release = video_device_release_empty;
+	video_dev->v4l2_dev = v4l2_dev;
+	video_dev->queue = queue;
+	video_dev->lock = lock;
+
+	video_set_drvdata(video_dev, isp_dev);
+
+	ret = video_register_device(video_dev, VFL_TYPE_VIDEO, -1);
+	if (ret) {
+		v4l2_err(v4l2_dev, "failed to register video device: %d\n",
+			 ret);
+		goto error_media_entity;
+	}
+
+	v4l2_info(v4l2_dev, "device %s registered as %s\n", video_dev->name,
+		  video_device_node_name(video_dev));
+
+	/* Media Pad Link */
+
+	ret = media_create_pad_link(&subdev->entity, 2, &video_dev->entity, 0,
+				    MEDIA_LNK_FL_ENABLED |
+				    MEDIA_LNK_FL_IMMUTABLE);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "failed to create %s:%u -> %s:%u link\n",
+			 subdev->entity.name, 1, video_dev->entity.name, 0);
+		goto error_video_device;
+	}
+
+	return 0;
+
+error_video_device:
+	vb2_video_unregister_device(video_dev);
+
+error_media_entity:
+	media_entity_cleanup(&video_dev->entity);
+
+error_mutex:
+	mutex_destroy(lock);
+
+	return ret;
+}
+
+void sun6i_isp_capture_cleanup(struct sun6i_isp_device *isp_dev)
+{
+	struct video_device *video_dev = &isp_dev->capture.video_dev;
+	struct mutex *lock = &isp_dev->capture.lock;
+
+	vb2_video_unregister_device(video_dev);
+	media_entity_cleanup(&video_dev->entity);
+	mutex_destroy(lock);
+}
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.h b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.h
new file mode 100644
index 000000000000..80911d3f4b75
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.h
@@ -0,0 +1,79 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_ISP_CAPTURE_H_
+#define _SUN6I_ISP_CAPTURE_H_
+
+#include <media/v4l2-device.h>
+
+#define SUN6I_ISP_CAPTURE_NAME		"sun6i-isp-capture"
+
+#define SUN6I_ISP_CAPTURE_WIDTH_MIN	16
+#define SUN6I_ISP_CAPTURE_WIDTH_MAX	3264
+#define SUN6I_ISP_CAPTURE_HEIGHT_MIN	16
+#define SUN6I_ISP_CAPTURE_HEIGHT_MAX	2448
+
+struct sun6i_isp_device;
+
+struct sun6i_isp_capture_format {
+	u32	pixelformat;
+	u8	output_format;
+};
+
+#undef current
+struct sun6i_isp_capture_state {
+	struct list_head		queue;
+	spinlock_t			lock; /* Queue and buffers lock. */
+
+	struct sun6i_isp_buffer		*pending;
+	struct sun6i_isp_buffer		*current;
+	struct sun6i_isp_buffer		*complete;
+
+	unsigned int			sequence;
+	bool				streaming;
+};
+
+struct sun6i_isp_capture {
+	struct video_device		video_dev;
+	struct vb2_queue		queue;
+	struct mutex			lock; /* Queue lock. */
+
+	struct media_pad		pad;
+
+	struct v4l2_format		format;
+
+	struct sun6i_isp_capture_state	state;
+};
+
+/* Helpers */
+
+void sun6i_isp_capture_dimensions(struct sun6i_isp_device *isp_dev,
+				  unsigned int *width, unsigned int *height);
+void sun6i_isp_capture_format(struct sun6i_isp_device *isp_dev,
+			      u32 *pixelformat);
+
+/* Format */
+
+const struct sun6i_isp_capture_format *
+sun6i_isp_capture_format_find(u32 pixelformat);
+
+/* Capture */
+
+void sun6i_isp_capture_configure(struct sun6i_isp_device *isp_dev);
+
+/* State */
+
+void sun6i_isp_capture_state_update(struct sun6i_isp_device *isp_dev,
+				    bool *update);
+void sun6i_isp_capture_state_complete(struct sun6i_isp_device *isp_dev);
+void sun6i_isp_capture_finish(struct sun6i_isp_device *isp_dev);
+
+/* Capture */
+
+int sun6i_isp_capture_setup(struct sun6i_isp_device *isp_dev);
+void sun6i_isp_capture_cleanup(struct sun6i_isp_device *isp_dev);
+
+#endif
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.c
new file mode 100644
index 000000000000..8edfeb0fbf54
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.c
@@ -0,0 +1,571 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mc.h>
+#include <media/videobuf2-vmalloc.h>
+#include <media/videobuf2-v4l2.h>
+
+#include "sun6i_isp.h"
+#include "sun6i_isp_params.h"
+#include "sun6i_isp_reg.h"
+#include "uapi/sun6i-isp-config.h"
+
+/* Params */
+
+static const struct sun6i_isp_params_config sun6i_isp_params_config_default = {
+	.modules_used = SUN6I_ISP_MODULE_BAYER,
+
+	.bayer = {
+		.offset_r	= 32,
+		.offset_gr	= 32,
+		.offset_gb	= 32,
+		.offset_b	= 32,
+
+		.gain_r		= 256,
+		.gain_gr	= 256,
+		.gain_gb	= 256,
+		.gain_b		= 256,
+
+	},
+
+	.bdnf = {
+		.in_dis_min		= 8,
+		.in_dis_max		= 16,
+
+		.coefficients_g		= { 15, 4, 1 },
+		.coefficients_rb	= { 15, 4 },
+	},
+};
+
+static void sun6i_isp_params_configure_ob(struct sun6i_isp_device *isp_dev)
+{
+	unsigned int width, height;
+
+	sun6i_isp_proc_dimensions(isp_dev, &width, &height);
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_OB_SIZE_REG,
+			     SUN6I_ISP_OB_SIZE_WIDTH(width) |
+			     SUN6I_ISP_OB_SIZE_HEIGHT(height));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_OB_VALID_REG,
+			     SUN6I_ISP_OB_VALID_WIDTH(width) |
+			     SUN6I_ISP_OB_VALID_HEIGHT(height));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_OB_SRC0_VALID_START_REG,
+			     SUN6I_ISP_OB_SRC0_VALID_START_HORZ(0) |
+			     SUN6I_ISP_OB_SRC0_VALID_START_VERT(0));
+}
+
+static void sun6i_isp_params_configure_ae(struct sun6i_isp_device *isp_dev)
+{
+	/* These are default values that need to be set to get an output. */
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_AE_CFG_REG,
+			     SUN6I_ISP_AE_CFG_LOW_BRI_TH(0xff) |
+			     SUN6I_ISP_AE_CFG_HORZ_NUM(8) |
+			     SUN6I_ISP_AE_CFG_HIGH_BRI_TH(0xf00) |
+			     SUN6I_ISP_AE_CFG_VERT_NUM(8));
+}
+
+static void
+sun6i_isp_params_configure_bayer(struct sun6i_isp_device *isp_dev,
+				 const struct sun6i_isp_params_config *config)
+{
+	const struct sun6i_isp_params_config_bayer *bayer = &config->bayer;
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_BAYER_OFFSET0_REG,
+			     SUN6I_ISP_BAYER_OFFSET0_R(bayer->offset_r) |
+			     SUN6I_ISP_BAYER_OFFSET0_GR(bayer->offset_gr));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_BAYER_OFFSET1_REG,
+			     SUN6I_ISP_BAYER_OFFSET1_GB(bayer->offset_gb) |
+			     SUN6I_ISP_BAYER_OFFSET1_B(bayer->offset_b));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_BAYER_GAIN0_REG,
+			     SUN6I_ISP_BAYER_GAIN0_R(bayer->gain_r) |
+			     SUN6I_ISP_BAYER_GAIN0_GR(bayer->gain_gr));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_BAYER_GAIN1_REG,
+			     SUN6I_ISP_BAYER_GAIN1_GB(bayer->gain_gb) |
+			     SUN6I_ISP_BAYER_GAIN1_B(bayer->gain_b));
+}
+
+static void sun6i_isp_params_configure_wb(struct sun6i_isp_device *isp_dev)
+{
+	/* These are default values that need to be set to get an output. */
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_WB_GAIN0_REG,
+			     SUN6I_ISP_WB_GAIN0_R(256) |
+			     SUN6I_ISP_WB_GAIN0_GR(256));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_WB_GAIN1_REG,
+			     SUN6I_ISP_WB_GAIN1_GB(256) |
+			     SUN6I_ISP_WB_GAIN1_B(256));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_WB_CFG_REG,
+			     SUN6I_ISP_WB_CFG_CLIP(0xfff));
+}
+
+static void sun6i_isp_params_configure_base(struct sun6i_isp_device *isp_dev)
+{
+	sun6i_isp_params_configure_ae(isp_dev);
+	sun6i_isp_params_configure_ob(isp_dev);
+	sun6i_isp_params_configure_wb(isp_dev);
+}
+
+static void
+sun6i_isp_params_configure_bdnf(struct sun6i_isp_device *isp_dev,
+				const struct sun6i_isp_params_config *config)
+{
+	const struct sun6i_isp_params_config_bdnf *bdnf = &config->bdnf;
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_BDNF_CFG_REG,
+			     SUN6I_ISP_BDNF_CFG_IN_DIS_MIN(bdnf->in_dis_min) |
+			     SUN6I_ISP_BDNF_CFG_IN_DIS_MAX(bdnf->in_dis_max));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_BDNF_COEF_RB_REG,
+			     SUN6I_ISP_BDNF_COEF_RB(0, bdnf->coefficients_rb[0]) |
+			     SUN6I_ISP_BDNF_COEF_RB(1, bdnf->coefficients_rb[1]) |
+			     SUN6I_ISP_BDNF_COEF_RB(2, bdnf->coefficients_rb[2]) |
+			     SUN6I_ISP_BDNF_COEF_RB(3, bdnf->coefficients_rb[3]) |
+			     SUN6I_ISP_BDNF_COEF_RB(4, bdnf->coefficients_rb[4]));
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_BDNF_COEF_G_REG,
+			     SUN6I_ISP_BDNF_COEF_G(0, bdnf->coefficients_g[0]) |
+			     SUN6I_ISP_BDNF_COEF_G(1, bdnf->coefficients_g[1]) |
+			     SUN6I_ISP_BDNF_COEF_G(2, bdnf->coefficients_g[2]) |
+			     SUN6I_ISP_BDNF_COEF_G(3, bdnf->coefficients_g[3]) |
+			     SUN6I_ISP_BDNF_COEF_G(4, bdnf->coefficients_g[4]) |
+			     SUN6I_ISP_BDNF_COEF_G(5, bdnf->coefficients_g[5]) |
+			     SUN6I_ISP_BDNF_COEF_G(6, bdnf->coefficients_g[6]));
+}
+
+static void
+sun6i_isp_params_configure_modules(struct sun6i_isp_device *isp_dev,
+				   const struct sun6i_isp_params_config *config)
+{
+	u32 value;
+
+	if (config->modules_used & SUN6I_ISP_MODULE_BDNF)
+		sun6i_isp_params_configure_bdnf(isp_dev, config);
+
+	if (config->modules_used & SUN6I_ISP_MODULE_BAYER)
+		sun6i_isp_params_configure_bayer(isp_dev, config);
+
+	value = sun6i_isp_load_read(isp_dev, SUN6I_ISP_MODULE_EN_REG);
+	/* Clear all modules but keep input configuration. */
+	value &= SUN6I_ISP_MODULE_EN_SRC0 | SUN6I_ISP_MODULE_EN_SRC1;
+
+	if (config->modules_used & SUN6I_ISP_MODULE_BDNF)
+		value |= SUN6I_ISP_MODULE_EN_BDNF;
+
+	/* Bayer stage is always enabled. */
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_MODULE_EN_REG, value);
+}
+
+void sun6i_isp_params_configure(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	sun6i_isp_params_configure_base(isp_dev);
+
+	/* Default config is only applied at the very first stream start. */
+	if (state->configured)
+		goto complete;
+
+	 sun6i_isp_params_configure_modules(isp_dev,
+					    &sun6i_isp_params_config_default);
+
+	state->configured = true;
+
+complete:
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+/* State */
+
+static void sun6i_isp_params_state_cleanup(struct sun6i_isp_device *isp_dev,
+					    bool error)
+{
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+	struct sun6i_isp_buffer *isp_buffer;
+	struct vb2_buffer *vb2_buffer;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (state->pending) {
+		vb2_buffer = &state->pending->v4l2_buffer.vb2_buf;
+		vb2_buffer_done(vb2_buffer, error ? VB2_BUF_STATE_ERROR :
+				VB2_BUF_STATE_QUEUED);
+	}
+
+	list_for_each_entry(isp_buffer, &state->queue, list) {
+		vb2_buffer = &isp_buffer->v4l2_buffer.vb2_buf;
+		vb2_buffer_done(vb2_buffer, error ? VB2_BUF_STATE_ERROR :
+				VB2_BUF_STATE_QUEUED);
+	}
+
+	INIT_LIST_HEAD(&state->queue);
+
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_isp_params_state_update(struct sun6i_isp_device *isp_dev,
+				   bool *update)
+{
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+	struct sun6i_isp_buffer *isp_buffer;
+	struct vb2_buffer *vb2_buffer;
+	const struct sun6i_isp_params_config *config;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (list_empty(&state->queue))
+		goto complete;
+
+	if (state->pending)
+		goto complete;
+
+	isp_buffer = list_first_entry(&state->queue, struct sun6i_isp_buffer,
+				      list);
+
+	vb2_buffer = &isp_buffer->v4l2_buffer.vb2_buf;
+	config = vb2_plane_vaddr(vb2_buffer, 0);
+
+	sun6i_isp_params_configure_modules(isp_dev, config);
+
+	list_del(&isp_buffer->list);
+
+	state->pending = isp_buffer;
+
+	if (update)
+		*update = true;
+
+complete:
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_isp_params_state_complete(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+	struct sun6i_isp_buffer *isp_buffer;
+	struct vb2_buffer *vb2_buffer;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (!state->pending)
+		goto complete;
+
+	isp_buffer = state->pending;
+	vb2_buffer = &isp_buffer->v4l2_buffer.vb2_buf;
+
+	vb2_buffer->timestamp = ktime_get_ns();
+
+	/* Parameters will be applied starting from the next frame. */
+	isp_buffer->v4l2_buffer.sequence = isp_dev->capture.state.sequence + 1;
+
+	vb2_buffer_done(vb2_buffer, VB2_BUF_STATE_DONE);
+
+	state->pending = NULL;
+
+complete:
+	spin_unlock_irqrestore(&state->lock, flags);
+}
+
+/* Queue */
+
+static int sun6i_isp_params_queue_setup(struct vb2_queue *queue,
+					unsigned int *buffers_count,
+					unsigned int *planes_count,
+					unsigned int sizes[],
+					struct device *alloc_devs[])
+{
+	struct sun6i_isp_device *isp_dev = vb2_get_drv_priv(queue);
+	unsigned int size = isp_dev->params.format.fmt.meta.buffersize;
+
+	if (*planes_count)
+		return sizes[0] < size ? -EINVAL : 0;
+
+	*planes_count = 1;
+	sizes[0] = size;
+
+	return 0;
+}
+
+static int sun6i_isp_params_buffer_prepare(struct vb2_buffer *vb2_buffer)
+{
+	struct sun6i_isp_device *isp_dev =
+		vb2_get_drv_priv(vb2_buffer->vb2_queue);
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	unsigned int size = isp_dev->params.format.fmt.meta.buffersize;
+
+	if (vb2_plane_size(vb2_buffer, 0) < size) {
+		v4l2_err(v4l2_dev, "buffer too small (%lu < %u)\n",
+			 vb2_plane_size(vb2_buffer, 0), size);
+		return -EINVAL;
+	}
+
+	vb2_set_plane_payload(vb2_buffer, 0, size);
+
+	return 0;
+}
+
+static void sun6i_isp_params_buffer_queue(struct vb2_buffer *vb2_buffer)
+{
+	struct sun6i_isp_device *isp_dev =
+		vb2_get_drv_priv(vb2_buffer->vb2_queue);
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+	struct vb2_v4l2_buffer *v4l2_buffer = to_vb2_v4l2_buffer(vb2_buffer);
+	struct sun6i_isp_buffer *isp_buffer =
+		container_of(v4l2_buffer, struct sun6i_isp_buffer, v4l2_buffer);
+	bool capture_streaming = isp_dev->capture.state.streaming;
+	unsigned long flags;
+
+	spin_lock_irqsave(&state->lock, flags);
+	list_add_tail(&isp_buffer->list, &state->queue);
+	spin_unlock_irqrestore(&state->lock, flags);
+
+	if (state->streaming && capture_streaming)
+		sun6i_isp_state_update(isp_dev, false);
+}
+
+static int sun6i_isp_params_start_streaming(struct vb2_queue *queue,
+				     unsigned int count)
+{
+	struct sun6i_isp_device *isp_dev = vb2_get_drv_priv(queue);
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+	bool capture_streaming = isp_dev->capture.state.streaming;
+
+	state->streaming = true;
+
+	/*
+	 * Update the state as soon as possible if capture is streaming,
+	 * otherwise it will be applied when capture starts streaming.
+	 */
+
+	if (capture_streaming)
+		sun6i_isp_state_update(isp_dev, false);
+
+	return 0;
+}
+
+static void sun6i_isp_params_stop_streaming(struct vb2_queue *queue)
+{
+	struct sun6i_isp_device *isp_dev = vb2_get_drv_priv(queue);
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+
+	state->streaming = false;
+	sun6i_isp_params_state_cleanup(isp_dev, true);
+}
+
+static const struct vb2_ops sun6i_isp_params_queue_ops = {
+	.queue_setup		= sun6i_isp_params_queue_setup,
+	.buf_prepare		= sun6i_isp_params_buffer_prepare,
+	.buf_queue		= sun6i_isp_params_buffer_queue,
+	.start_streaming	= sun6i_isp_params_start_streaming,
+	.stop_streaming		= sun6i_isp_params_stop_streaming,
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
+};
+
+/* Video Device */
+
+static int sun6i_isp_params_querycap(struct file *file, void *private,
+				     struct v4l2_capability *capability)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+	struct video_device *video_dev = &isp_dev->params.video_dev;
+
+	strscpy(capability->driver, SUN6I_ISP_NAME, sizeof(capability->driver));
+	strscpy(capability->card, video_dev->name, sizeof(capability->card));
+	snprintf(capability->bus_info, sizeof(capability->bus_info),
+		 "platform:%s", dev_name(isp_dev->dev));
+
+	return 0;
+}
+
+static int sun6i_isp_params_enum_fmt(struct file *file, void *private,
+				     struct v4l2_fmtdesc *fmtdesc)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+	struct v4l2_meta_format *params_format =
+		&isp_dev->params.format.fmt.meta;
+
+	if (fmtdesc->index > 0)
+		return -EINVAL;
+
+	fmtdesc->pixelformat = params_format->dataformat;
+
+	return 0;
+}
+
+static int sun6i_isp_params_g_fmt(struct file *file, void *private,
+				  struct v4l2_format *format)
+{
+	struct sun6i_isp_device *isp_dev = video_drvdata(file);
+
+	*format = isp_dev->params.format;
+
+	return 0;
+}
+
+static const struct v4l2_ioctl_ops sun6i_isp_params_ioctl_ops = {
+	.vidioc_querycap		= sun6i_isp_params_querycap,
+
+	.vidioc_enum_fmt_meta_out	= sun6i_isp_params_enum_fmt,
+	.vidioc_g_fmt_meta_out		= sun6i_isp_params_g_fmt,
+	.vidioc_s_fmt_meta_out		= sun6i_isp_params_g_fmt,
+	.vidioc_try_fmt_meta_out	= sun6i_isp_params_g_fmt,
+
+	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
+	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
+	.vidioc_querybuf		= vb2_ioctl_querybuf,
+	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
+	.vidioc_qbuf			= vb2_ioctl_qbuf,
+	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
+	.vidioc_expbuf			= vb2_ioctl_expbuf,
+	.vidioc_streamon		= vb2_ioctl_streamon,
+	.vidioc_streamoff		= vb2_ioctl_streamoff,
+
+	.vidioc_log_status		= v4l2_ctrl_log_status,
+	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+};
+
+static const struct v4l2_file_operations sun6i_isp_params_fops = {
+	.owner		= THIS_MODULE,
+	.unlocked_ioctl	= video_ioctl2,
+	.open		= v4l2_fh_open,
+	.release	= vb2_fop_release,
+	.mmap		= vb2_fop_mmap,
+	.poll		= vb2_fop_poll,
+};
+
+/* Params */
+
+int sun6i_isp_params_setup(struct sun6i_isp_device *isp_dev)
+{
+	struct sun6i_isp_params_state *state = &isp_dev->params.state;
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	struct v4l2_subdev *subdev = &isp_dev->proc.subdev;
+	struct v4l2_format *format = &isp_dev->params.format;
+	struct v4l2_meta_format *params_format = &format->fmt.meta;
+	struct video_device *video_dev = &isp_dev->params.video_dev;
+	struct media_pad *pad = &isp_dev->params.pad;
+	struct vb2_queue *queue = &isp_dev->params.queue;
+	struct mutex *lock = &isp_dev->params.lock;
+	int ret;
+
+	mutex_init(lock);
+
+	/* State */
+
+	INIT_LIST_HEAD(&state->queue);
+	spin_lock_init(&state->lock);
+
+	/* Media Pads */
+
+	pad->flags = MEDIA_PAD_FL_SOURCE | MEDIA_PAD_FL_MUST_CONNECT;
+
+	ret = media_entity_pads_init(&video_dev->entity, 1, pad);
+	if (ret)
+		goto error_mutex;
+
+	/* Queue */
+
+	queue->type = V4L2_BUF_TYPE_META_OUTPUT;
+	queue->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+	queue->ops = &sun6i_isp_params_queue_ops;
+	queue->mem_ops = &vb2_vmalloc_memops;
+	queue->min_buffers_needed = 1;
+	queue->buf_struct_size = sizeof(struct sun6i_isp_buffer);
+	queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	queue->lock = lock;
+	queue->dev = isp_dev->dev;
+	queue->drv_priv = isp_dev;
+
+	ret = vb2_queue_init(queue);
+	if (ret) {
+		v4l2_err(v4l2_dev, "failed to initialize vb2 queue: %d\n", ret);
+		goto error_media_entity;
+	}
+
+	/* V4L2 Format */
+
+	format->type = queue->type;
+	params_format->dataformat = V4L2_META_FMT_SUN6I_ISP_PARAMS;
+	params_format->buffersize = sizeof(struct sun6i_isp_params_config);
+
+	/* Video Device */
+
+	strscpy(video_dev->name, SUN6I_ISP_PARAMS_NAME,
+		sizeof(video_dev->name));
+	video_dev->device_caps = V4L2_CAP_META_OUTPUT |
+				 V4L2_CAP_STREAMING;
+	video_dev->vfl_dir = VFL_DIR_TX;
+	video_dev->fops = &sun6i_isp_params_fops;
+	video_dev->ioctl_ops = &sun6i_isp_params_ioctl_ops;
+	video_dev->release = video_device_release_empty;
+	video_dev->v4l2_dev = v4l2_dev;
+	video_dev->queue = queue;
+	video_dev->lock = lock;
+
+	video_set_drvdata(video_dev, isp_dev);
+
+	ret = video_register_device(video_dev, VFL_TYPE_VIDEO, -1);
+	if (ret) {
+		v4l2_err(v4l2_dev, "failed to register video device: %d\n",
+			 ret);
+		goto error_media_entity;
+	}
+
+	v4l2_info(v4l2_dev, "device %s registered as %s\n", video_dev->name,
+		  video_device_node_name(video_dev));
+
+	/* Media Pad Link */
+
+	ret = media_create_pad_link(&video_dev->entity, 0, &subdev->entity, 1,
+				    MEDIA_LNK_FL_ENABLED |
+				    MEDIA_LNK_FL_IMMUTABLE);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "failed to create %s:%u -> %s:%u link\n",
+			 video_dev->entity.name, 0, subdev->entity.name, 1);
+		goto error_video_device;
+	}
+
+	return 0;
+
+error_video_device:
+	vb2_video_unregister_device(video_dev);
+
+error_media_entity:
+	media_entity_cleanup(&video_dev->entity);
+
+error_mutex:
+	mutex_destroy(lock);
+
+	return ret;
+}
+
+void sun6i_isp_params_cleanup(struct sun6i_isp_device *isp_dev)
+{
+	struct video_device *video_dev = &isp_dev->params.video_dev;
+	struct mutex *lock = &isp_dev->params.lock;
+
+	vb2_video_unregister_device(video_dev);
+	media_entity_cleanup(&video_dev->entity);
+	mutex_destroy(lock);
+}
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.h b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.h
new file mode 100644
index 000000000000..5ee36fc891a3
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.h
@@ -0,0 +1,53 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_ISP_PARAMS_H_
+#define _SUN6I_ISP_PARAMS_H_
+
+#include <media/v4l2-device.h>
+
+#define SUN6I_ISP_PARAMS_NAME		"sun6i-isp-params"
+
+struct sun6i_isp_device;
+
+struct sun6i_isp_params_state {
+	struct list_head		queue; /* Queue and buffers lock. */
+	spinlock_t			lock;
+
+	struct sun6i_isp_buffer		*pending;
+
+	bool				configured;
+	bool				streaming;
+};
+
+struct sun6i_isp_params {
+	struct video_device		video_dev;
+	struct vb2_queue		queue;
+	struct mutex			lock; /* Queue lock. */
+
+	struct media_pad		pad;
+
+	struct v4l2_format		format;
+
+	struct sun6i_isp_params_state	state;
+};
+
+/* Params */
+
+void sun6i_isp_params_configure(struct sun6i_isp_device *isp_dev);
+
+/* State */
+
+void sun6i_isp_params_state_update(struct sun6i_isp_device *isp_dev,
+				   bool *update);
+void sun6i_isp_params_state_complete(struct sun6i_isp_device *isp_dev);
+
+/* Params */
+
+int sun6i_isp_params_setup(struct sun6i_isp_device *isp_dev);
+void sun6i_isp_params_cleanup(struct sun6i_isp_device *isp_dev);
+
+#endif
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
new file mode 100644
index 000000000000..16bc48ce8a49
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
@@ -0,0 +1,598 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+
+#include "sun6i_isp.h"
+#include "sun6i_isp_capture.h"
+#include "sun6i_isp_params.h"
+#include "sun6i_isp_proc.h"
+#include "sun6i_isp_reg.h"
+
+/* Helpers */
+
+void sun6i_isp_proc_dimensions(struct sun6i_isp_device *isp_dev,
+			       unsigned int *width, unsigned int *height)
+{
+	if (width)
+		*width = isp_dev->proc.mbus_format.width;
+	if (height)
+		*height = isp_dev->proc.mbus_format.height;
+}
+
+/* Format */
+
+static const struct sun6i_isp_proc_format sun6i_isp_proc_formats[] = {
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR8_1X8,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_BGGR,
+	},
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG8_1X8,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_GBRG,
+	},
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG8_1X8,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_GRBG,
+	},
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB8_1X8,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_RGGB,
+	},
+
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR10_1X10,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_BGGR,
+	},
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG10_1X10,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_GBRG,
+	},
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG10_1X10,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_GRBG,
+	},
+	{
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB10_1X10,
+		.input_format	= SUN6I_ISP_INPUT_FMT_RAW_RGGB,
+	},
+};
+
+const struct sun6i_isp_proc_format *sun6i_isp_proc_format_find(u32 mbus_code)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(sun6i_isp_proc_formats); i++)
+		if (sun6i_isp_proc_formats[i].mbus_code == mbus_code)
+			return &sun6i_isp_proc_formats[i];
+
+	return NULL;
+}
+
+/* Processor */
+
+static void sun6i_isp_proc_irq_enable(struct sun6i_isp_device *isp_dev)
+{
+	struct regmap *regmap = isp_dev->regmap;
+
+	regmap_write(regmap, SUN6I_ISP_FE_INT_EN_REG,
+		     SUN6I_ISP_FE_INT_EN_FINISH |
+		     SUN6I_ISP_FE_INT_EN_START |
+		     SUN6I_ISP_FE_INT_EN_PARA_SAVE |
+		     SUN6I_ISP_FE_INT_EN_PARA_LOAD |
+		     SUN6I_ISP_FE_INT_EN_SRC0_FIFO |
+		     SUN6I_ISP_FE_INT_EN_ROT_FINISH);
+}
+
+static void sun6i_isp_proc_irq_disable(struct sun6i_isp_device *isp_dev)
+{
+	struct regmap *regmap = isp_dev->regmap;
+
+	regmap_write(regmap, SUN6I_ISP_FE_INT_EN_REG, 0);
+}
+
+static void sun6i_isp_proc_irq_clear(struct sun6i_isp_device *isp_dev)
+{
+	struct regmap *regmap = isp_dev->regmap;
+
+	regmap_write(regmap, SUN6I_ISP_FE_INT_EN_REG, 0);
+	regmap_write(regmap, SUN6I_ISP_FE_INT_STA_REG,
+		     SUN6I_ISP_FE_INT_STA_CLEAR);
+}
+
+static void sun6i_isp_proc_enable(struct sun6i_isp_device *isp_dev)
+{
+	struct regmap *regmap = isp_dev->regmap;
+	u8 mode;
+
+	/* Frontend */
+
+	if (isp_dev->proc.source == &isp_dev->proc.source_csi0)
+		mode = SUN6I_ISP_SRC_MODE_CSI(0);
+	else if (isp_dev->proc.source == &isp_dev->proc.source_csi1)
+		mode = SUN6I_ISP_SRC_MODE_CSI(1);
+
+	regmap_write(regmap, SUN6I_ISP_FE_CFG_REG,
+		     SUN6I_ISP_FE_CFG_EN | SUN6I_ISP_FE_CFG_SRC0_MODE(mode));
+
+	regmap_write(regmap, SUN6I_ISP_FE_CTRL_REG,
+		     SUN6I_ISP_FE_CTRL_VCAP_EN | SUN6I_ISP_FE_CTRL_PARA_READY);
+}
+
+static void sun6i_isp_proc_disable(struct sun6i_isp_device *isp_dev)
+{
+	struct regmap *regmap = isp_dev->regmap;
+
+	/* Frontend */
+
+	regmap_write(regmap, SUN6I_ISP_FE_CTRL_REG, 0);
+	regmap_write(regmap, SUN6I_ISP_FE_CFG_REG, 0);
+}
+
+static void sun6i_isp_proc_configure(struct sun6i_isp_device *isp_dev)
+{
+	struct v4l2_mbus_framefmt *mbus_format = &isp_dev->proc.mbus_format;
+	const struct sun6i_isp_proc_format *format;
+	u32 value;
+
+	/* Module */
+
+	value = sun6i_isp_load_read(isp_dev, SUN6I_ISP_MODULE_EN_REG);
+	value |= SUN6I_ISP_MODULE_EN_SRC0;
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_MODULE_EN_REG, value);
+
+	/* Input */
+
+	format = sun6i_isp_proc_format_find(mbus_format->code);
+	if (WARN_ON(!format))
+		return;
+
+	sun6i_isp_load_write(isp_dev, SUN6I_ISP_MODE_REG,
+			     SUN6I_ISP_MODE_INPUT_FMT(format->input_format) |
+			     SUN6I_ISP_MODE_INPUT_YUV_SEQ(format->input_yuv_seq) |
+			     SUN6I_ISP_MODE_SHARP(1) |
+			     SUN6I_ISP_MODE_HIST(2));
+}
+
+/* V4L2 Subdev */
+
+static int sun6i_isp_proc_s_stream(struct v4l2_subdev *subdev, int on)
+{
+	struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
+	struct device *dev = isp_dev->dev;
+	struct v4l2_subdev *source_subdev;
+	int ret;
+
+	/* Source */
+
+	if (!isp_dev->proc.source)
+		return -ENODEV;
+
+	source_subdev = isp_dev->proc.source->subdev;
+
+	if (!on) {
+		sun6i_isp_proc_irq_disable(isp_dev);
+		v4l2_subdev_call(source_subdev, video, s_stream, 0);
+		goto disable;
+	}
+
+	/* PM */
+
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret < 0)
+		return ret;
+
+	/* Clear */
+
+	sun6i_isp_proc_irq_clear(isp_dev);
+
+	/* Configure */
+
+	sun6i_isp_tables_configure(isp_dev);
+	sun6i_isp_params_configure(isp_dev);
+	sun6i_isp_proc_configure(isp_dev);
+	sun6i_isp_capture_configure(isp_dev);
+
+	/* State Update */
+
+	sun6i_isp_state_update(isp_dev, true);
+
+	/* Enable */
+
+	sun6i_isp_proc_irq_enable(isp_dev);
+	sun6i_isp_proc_enable(isp_dev);
+
+	ret = v4l2_subdev_call(source_subdev, video, s_stream, 1);
+	if (ret && ret != -ENOIOCTLCMD) {
+		sun6i_isp_proc_irq_disable(isp_dev);
+		goto disable;
+	}
+
+	return 0;
+
+disable:
+	sun6i_isp_proc_disable(isp_dev);
+
+	isp_dev->proc.source = NULL;
+
+	pm_runtime_put(dev);
+
+	return ret;
+}
+
+static const struct v4l2_subdev_video_ops sun6i_isp_proc_video_ops = {
+	.s_stream	= sun6i_isp_proc_s_stream,
+};
+
+static void
+sun6i_isp_proc_mbus_format_prepare(struct v4l2_mbus_framefmt *mbus_format)
+{
+	if (!sun6i_isp_proc_format_find(mbus_format->code))
+		mbus_format->code = sun6i_isp_proc_formats[0].mbus_code;
+
+	mbus_format->field = V4L2_FIELD_NONE;
+	mbus_format->colorspace = V4L2_COLORSPACE_RAW;
+	mbus_format->quantization = V4L2_QUANTIZATION_DEFAULT;
+	mbus_format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
+}
+
+static int sun6i_isp_proc_init_cfg(struct v4l2_subdev *subdev,
+				   struct v4l2_subdev_state *state)
+{
+	unsigned int pad = SUN6I_ISP_PROC_PAD_SINK_CSI;
+	struct v4l2_mbus_framefmt *mbus_format =
+		v4l2_subdev_get_try_format(subdev, state, pad);
+
+	mbus_format->code = sun6i_isp_proc_formats[0].mbus_code;
+	mbus_format->width = 640;
+	mbus_format->height = 480;
+
+	sun6i_isp_proc_mbus_format_prepare(mbus_format);
+
+	return 0;
+}
+
+static int
+sun6i_isp_proc_enum_mbus_code(struct v4l2_subdev *subdev,
+			      struct v4l2_subdev_state *state,
+			      struct v4l2_subdev_mbus_code_enum *code_enum)
+{
+	if (code_enum->index >= ARRAY_SIZE(sun6i_isp_proc_formats))
+		return -EINVAL;
+
+	code_enum->code = sun6i_isp_proc_formats[code_enum->index].mbus_code;
+
+	return 0;
+}
+
+static int sun6i_isp_proc_get_fmt(struct v4l2_subdev *subdev,
+				  struct v4l2_subdev_state *state,
+				  struct v4l2_subdev_format *format)
+{
+	struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
+	struct v4l2_mbus_framefmt *mbus_format = &format->format;
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+		*mbus_format = *v4l2_subdev_get_try_format(subdev, state,
+							   format->pad);
+	else
+		*mbus_format = isp_dev->proc.mbus_format;
+
+	return 0;
+}
+
+static int sun6i_isp_proc_set_fmt(struct v4l2_subdev *subdev,
+				  struct v4l2_subdev_state *state,
+				  struct v4l2_subdev_format *format)
+{
+	struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
+	struct v4l2_mbus_framefmt *mbus_format = &format->format;
+
+	sun6i_isp_proc_mbus_format_prepare(mbus_format);
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+		*v4l2_subdev_get_try_format(subdev, state, format->pad) =
+			*mbus_format;
+	else
+		isp_dev->proc.mbus_format = *mbus_format;
+
+	return 0;
+}
+
+static const struct v4l2_subdev_pad_ops sun6i_isp_proc_pad_ops = {
+	.init_cfg	= sun6i_isp_proc_init_cfg,
+	.enum_mbus_code	= sun6i_isp_proc_enum_mbus_code,
+	.get_fmt	= sun6i_isp_proc_get_fmt,
+	.set_fmt	= sun6i_isp_proc_set_fmt,
+};
+
+const struct v4l2_subdev_ops sun6i_isp_proc_subdev_ops = {
+	.video	= &sun6i_isp_proc_video_ops,
+	.pad	= &sun6i_isp_proc_pad_ops,
+};
+
+/* Media Entity */
+
+static int sun6i_isp_proc_link_validate(struct media_link *link)
+{
+	struct v4l2_subdev *subdev =
+		media_entity_to_v4l2_subdev(link->sink->entity);
+	struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
+	struct sun6i_isp_proc *proc = &isp_dev->proc;
+	struct device *dev = isp_dev->dev;
+	struct v4l2_subdev *source_subdev =
+		media_entity_to_v4l2_subdev(link->source->entity);
+	int ret;
+
+	/* Only care about sink index 0, connected to CSI. */
+	if (link->sink->index > 0)
+		return 0;
+
+	/* Only support one enabled source at a time. */
+	if (proc->source) {
+		dev_err(dev, "more than one source is connected to proc\n");
+		return -EBUSY;
+	}
+
+	ret = v4l2_subdev_link_validate(link);
+	if (ret)
+		return ret;
+
+	if (source_subdev == proc->source_csi0.subdev)
+		proc->source = &proc->source_csi0;
+	else if (source_subdev == proc->source_csi1.subdev)
+		proc->source = &proc->source_csi1;
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct media_entity_operations sun6i_isp_proc_entity_ops = {
+	.link_validate	= sun6i_isp_proc_link_validate,
+};
+
+/* V4L2 Async */
+
+static int sun6i_isp_proc_link(struct sun6i_isp_device *isp_dev,
+			       int sink_pad_index,
+			       struct v4l2_subdev *remote_subdev, bool enabled)
+{
+	struct device *dev = isp_dev->dev;
+	struct v4l2_subdev *subdev = &isp_dev->proc.subdev;
+	struct media_entity *sink_entity = &subdev->entity;
+	struct media_entity *source_entity = &remote_subdev->entity;
+	int source_pad_index;
+	int ret;
+
+	/* Get the first remote source pad. */
+	ret = media_entity_get_fwnode_pad(source_entity, remote_subdev->fwnode,
+					  MEDIA_PAD_FL_SOURCE);
+	if (ret < 0) {
+		dev_err(dev, "missing source pad in external entity %s\n",
+			source_entity->name);
+		return -EINVAL;
+	}
+
+	source_pad_index = ret;
+
+	dev_dbg(dev, "creating %s:%u -> %s:%u link\n", source_entity->name,
+		source_pad_index, sink_entity->name, sink_pad_index);
+
+	ret = media_create_pad_link(source_entity, source_pad_index,
+				    sink_entity, sink_pad_index,
+				    enabled ? MEDIA_LNK_FL_ENABLED : 0);
+	if (ret < 0) {
+		dev_err(dev, "failed to create %s:%u -> %s:%u link\n",
+			source_entity->name, source_pad_index,
+			sink_entity->name, sink_pad_index);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int sun6i_isp_proc_notifier_bound(struct v4l2_async_notifier *notifier,
+					 struct v4l2_subdev *remote_subdev,
+					 struct v4l2_async_subdev *async_subdev)
+{
+	struct sun6i_isp_device *isp_dev =
+		container_of(notifier, struct sun6i_isp_device, proc.notifier);
+	struct sun6i_isp_proc *proc = &isp_dev->proc;
+	struct sun6i_isp_proc_source *source = NULL;
+	struct fwnode_handle *fwnode = dev_fwnode(isp_dev->dev);
+	struct fwnode_handle *handle = NULL;
+	bool enabled;
+	int ret;
+
+	while ((handle = fwnode_graph_get_next_endpoint(fwnode, handle))) {
+		struct fwnode_endpoint endpoint = { 0 };
+		struct fwnode_handle *remote_fwnode;
+
+		remote_fwnode = fwnode_graph_get_remote_port_parent(handle);
+		if (!remote_fwnode)
+			continue;
+
+		if (remote_fwnode != remote_subdev->fwnode)
+			goto next;
+
+		ret = fwnode_graph_parse_endpoint(handle, &endpoint);
+		if (ret < 0)
+			goto next;
+
+		switch (endpoint.port) {
+		case SUN6I_ISP_PORT_CSI0:
+			source = &proc->source_csi0;
+			enabled = true;
+			break;
+		case SUN6I_ISP_PORT_CSI1:
+			source = &proc->source_csi1;
+			enabled = !proc->source_csi0.expected;
+			break;
+		default:
+			break;
+		}
+
+next:
+		fwnode_handle_put(remote_fwnode);
+	}
+
+	if (!source)
+		return -EINVAL;
+
+	source->subdev = remote_subdev;
+
+	return sun6i_isp_proc_link(isp_dev, SUN6I_ISP_PROC_PAD_SINK_CSI,
+				   remote_subdev, enabled);
+}
+
+static int
+sun6i_isp_proc_notifier_complete(struct v4l2_async_notifier *notifier)
+{
+	struct sun6i_isp_device *isp_dev =
+		container_of(notifier, struct sun6i_isp_device, proc.notifier);
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	int ret;
+
+	ret = v4l2_device_register_subdev_nodes(v4l2_dev);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static const struct v4l2_async_notifier_operations
+sun6i_isp_proc_notifier_ops = {
+	.bound		= sun6i_isp_proc_notifier_bound,
+	.complete	= sun6i_isp_proc_notifier_complete,
+};
+
+/* Processor */
+
+static int sun6i_isp_proc_source_setup(struct sun6i_isp_device *isp_dev,
+				       struct sun6i_isp_proc_source *source,
+				       u32 port)
+{
+	struct device *dev = isp_dev->dev;
+	struct v4l2_async_notifier *notifier = &isp_dev->proc.notifier;
+	struct v4l2_fwnode_endpoint *endpoint = &source->endpoint;
+	struct v4l2_async_subdev *async_subdev;
+	struct fwnode_handle *handle = NULL;
+	int ret;
+
+	handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), port, 0, 0);
+	if (!handle)
+		return -ENODEV;
+
+	ret = v4l2_fwnode_endpoint_parse(handle, endpoint);
+	if (ret)
+		goto complete;
+
+	async_subdev = v4l2_async_notifier_add_fwnode_remote_subdev(notifier,
+		handle, struct v4l2_async_subdev);
+	if (IS_ERR(async_subdev)) {
+		ret = PTR_ERR(async_subdev);
+		goto complete;
+	}
+
+	source->expected = true;
+
+complete:
+	fwnode_handle_put(handle);
+
+	return ret;
+}
+
+int sun6i_isp_proc_setup(struct sun6i_isp_device *isp_dev)
+{
+	struct device *dev = isp_dev->dev;
+	struct sun6i_isp_proc *proc = &isp_dev->proc;
+	struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
+	struct v4l2_async_notifier *notifier = &proc->notifier;
+	struct v4l2_subdev *subdev = &proc->subdev;
+	struct media_pad *pads = proc->pads;
+	int ret;
+
+	/* V4L2 Subdev */
+
+	v4l2_subdev_init(subdev, &sun6i_isp_proc_subdev_ops);
+	strscpy(subdev->name, SUN6I_ISP_PROC_NAME, sizeof(subdev->name));
+	subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	subdev->owner = THIS_MODULE;
+	subdev->dev = dev;
+
+	v4l2_set_subdevdata(subdev, isp_dev);
+
+	/* Media Entity */
+
+	subdev->entity.function = MEDIA_ENT_F_PROC_VIDEO_ISP;
+	subdev->entity.ops = &sun6i_isp_proc_entity_ops;
+
+	/* Media Pads */
+
+	pads[SUN6I_ISP_PROC_PAD_SINK_CSI].flags = MEDIA_PAD_FL_SINK |
+						  MEDIA_PAD_FL_MUST_CONNECT;
+	pads[SUN6I_ISP_PROC_PAD_SINK_PARAMS].flags = MEDIA_PAD_FL_SINK |
+						     MEDIA_PAD_FL_MUST_CONNECT;
+	pads[SUN6I_ISP_PROC_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
+
+	ret = media_entity_pads_init(&subdev->entity, SUN6I_ISP_PROC_PAD_COUNT,
+				     pads);
+	if (ret)
+		return ret;
+
+	/* V4L2 Subdev */
+
+	ret = v4l2_device_register_subdev(v4l2_dev, subdev);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "failed to register v4l2 subdev: %d\n", ret);
+		goto error_media_entity;
+	}
+
+	/* V4L2 Async */
+
+	v4l2_async_notifier_init(notifier);
+	notifier->ops = &sun6i_isp_proc_notifier_ops;
+
+	sun6i_isp_proc_source_setup(isp_dev, &proc->source_csi0,
+				    SUN6I_ISP_PORT_CSI0);
+	sun6i_isp_proc_source_setup(isp_dev, &proc->source_csi1,
+				    SUN6I_ISP_PORT_CSI1);
+
+	ret = v4l2_async_notifier_register(v4l2_dev, notifier);
+	if (ret) {
+		v4l2_err(v4l2_dev,
+			 "failed to register v4l2 async notifier: %d\n", ret);
+		goto error_v4l2_async_notifier;
+	}
+
+	return 0;
+
+error_v4l2_async_notifier:
+	v4l2_async_notifier_cleanup(notifier);
+
+	v4l2_device_unregister_subdev(subdev);
+
+error_media_entity:
+	media_entity_cleanup(&subdev->entity);
+
+	return ret;
+}
+
+void sun6i_isp_proc_cleanup(struct sun6i_isp_device *isp_dev)
+{
+	struct v4l2_async_notifier *notifier = &isp_dev->proc.notifier;
+	struct v4l2_subdev *subdev = &isp_dev->proc.subdev;
+
+	v4l2_async_notifier_unregister(notifier);
+	v4l2_async_notifier_cleanup(notifier);
+
+	v4l2_device_unregister_subdev(subdev);
+	media_entity_cleanup(&subdev->entity);
+}
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.h b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.h
new file mode 100644
index 000000000000..10b4c0a40cb3
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.h
@@ -0,0 +1,61 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_ISP_PROC_H_
+#define _SUN6I_ISP_PROC_H_
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+
+#define SUN6I_ISP_PROC_NAME		"sun6i-isp-proc"
+
+enum sun6i_isp_proc_pad {
+	SUN6I_ISP_PROC_PAD_SINK_CSI	= 0,
+	SUN6I_ISP_PROC_PAD_SINK_PARAMS	= 1,
+	SUN6I_ISP_PROC_PAD_SOURCE	= 2,
+	SUN6I_ISP_PROC_PAD_COUNT	= 3,
+};
+
+struct sun6i_isp_device;
+
+struct sun6i_isp_proc_format {
+	u32	mbus_code;
+	u8	input_format;
+	u8	input_yuv_seq;
+};
+
+struct sun6i_isp_proc_source {
+	struct v4l2_subdev		*subdev;
+	struct v4l2_fwnode_endpoint	endpoint;
+	bool				expected;
+};
+
+struct sun6i_isp_proc {
+	struct v4l2_subdev		subdev;
+	struct media_pad		pads[3];
+	struct v4l2_async_notifier	notifier;
+	struct v4l2_mbus_framefmt	mbus_format;
+
+	struct sun6i_isp_proc_source	source_csi0;
+	struct sun6i_isp_proc_source	source_csi1;
+	struct sun6i_isp_proc_source	*source;
+};
+
+/* Helpers */
+
+void sun6i_isp_proc_dimensions(struct sun6i_isp_device *isp_dev,
+			       unsigned int *width, unsigned int *height);
+
+/* Format */
+
+const struct sun6i_isp_proc_format *sun6i_isp_proc_format_find(u32 mbus_code);
+
+/* Proc */
+
+int sun6i_isp_proc_setup(struct sun6i_isp_device *isp_dev);
+void sun6i_isp_proc_cleanup(struct sun6i_isp_device *isp_dev);
+
+#endif
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_reg.h b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_reg.h
new file mode 100644
index 000000000000..1e6f42005235
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_reg.h
@@ -0,0 +1,275 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_ISP_REG_H_
+#define _SUN6I_ISP_REG_H_
+
+#include <linux/kernel.h>
+
+#define SUN6I_ISP_ADDR_VALUE(a)			((a) >> 2)
+
+/* Frontend */
+
+#define SUN6I_ISP_SRC_MODE_DRAM			0
+#define SUN6I_ISP_SRC_MODE_CSI(n)		(1 + (n))
+
+#define SUN6I_ISP_FE_CFG_REG			0x0
+#define SUN6I_ISP_FE_CFG_EN			BIT(0)
+#define SUN6I_ISP_FE_CFG_SRC0_MODE(v)		(((v) << 8) & GENMASK(9, 8))
+#define SUN6I_ISP_FE_CFG_SRC1_MODE(v)		(((v) << 16) & GENMASK(17, 16))
+
+#define SUN6I_ISP_FE_CTRL_REG			0x4
+#define SUN6I_ISP_FE_CTRL_SCAP_EN		BIT(0)
+#define SUN6I_ISP_FE_CTRL_VCAP_EN		BIT(1)
+#define SUN6I_ISP_FE_CTRL_PARA_READY		BIT(2)
+#define SUN6I_ISP_FE_CTRL_LUT_UPDATE		BIT(3)
+#define SUN6I_ISP_FE_CTRL_LENS_UPDATE		BIT(4)
+#define SUN6I_ISP_FE_CTRL_GAMMA_UPDATE		BIT(5)
+#define SUN6I_ISP_FE_CTRL_DRC_UPDATE		BIT(6)
+#define SUN6I_ISP_FE_CTRL_DISC_UPDATE		BIT(7)
+#define SUN6I_ISP_FE_CTRL_OUTPUT_SPEED_CTRL(v)	(((v) << 16) & GENMASK(17, 16))
+#define SUN6I_ISP_FE_CTRL_VCAP_READ_START	BIT(31)
+
+#define SUN6I_ISP_FE_INT_EN_REG			0x8
+#define SUN6I_ISP_FE_INT_EN_FINISH		BIT(0)
+#define SUN6I_ISP_FE_INT_EN_START		BIT(1)
+#define SUN6I_ISP_FE_INT_EN_PARA_SAVE		BIT(2)
+#define SUN6I_ISP_FE_INT_EN_PARA_LOAD		BIT(3)
+#define SUN6I_ISP_FE_INT_EN_SRC0_FIFO		BIT(4)
+#define SUN6I_ISP_FE_INT_EN_SRC1_FIFO		BIT(5)
+#define SUN6I_ISP_FE_INT_EN_ROT_FINISH		BIT(6)
+#define SUN6I_ISP_FE_INT_EN_LINE_NUM_START	BIT(7)
+
+#define SUN6I_ISP_FE_INT_STA_REG		0xc
+#define SUN6I_ISP_FE_INT_STA_CLEAR		0xff
+#define SUN6I_ISP_FE_INT_STA_FINISH		BIT(0)
+#define SUN6I_ISP_FE_INT_STA_START		BIT(1)
+#define SUN6I_ISP_FE_INT_STA_PARA_SAVE		BIT(2)
+#define SUN6I_ISP_FE_INT_STA_PARA_LOAD		BIT(3)
+#define SUN6I_ISP_FE_INT_STA_SRC0_FIFO		BIT(4)
+#define SUN6I_ISP_FE_INT_STA_SRC1_FIFO		BIT(5)
+#define SUN6I_ISP_FE_INT_STA_ROT_FINISH		BIT(6)
+#define SUN6I_ISP_FE_INT_STA_LINE_NUM_START	BIT(7)
+
+/* Only since sun9i-a80-isp. */
+#define SUN6I_ISP_FE_INT_LINE_NUM_REG		0x18
+#define SUN6I_ISP_FE_ROT_OF_CFG_REG		0x1c
+
+/* Buffers/tables */
+
+#define SUN6I_ISP_REG_LOAD_ADDR_REG		0x20
+#define SUN6I_ISP_REG_SAVE_ADDR_REG		0x24
+
+#define SUN6I_ISP_LUT_TABLE_ADDR_REG		0x28
+#define SUN6I_ISP_DRC_TABLE_ADDR_REG		0x2c
+#define SUN6I_ISP_STATS_ADDR_REG		0x30
+
+/* SRAM */
+
+#define SUN6I_ISP_SRAM_RW_OFFSET_REG		0x38
+#define SUN6I_ISP_SRAM_RW_DATA_REG		0x3c
+
+/* Global */
+
+#define SUN6I_ISP_MODULE_EN_REG			0x40
+#define SUN6I_ISP_MODULE_EN_AE			BIT(0)
+#define SUN6I_ISP_MODULE_EN_OBC			BIT(1)
+#define SUN6I_ISP_MODULE_EN_DPC_LUT		BIT(2)
+#define SUN6I_ISP_MODULE_EN_DPC_OTF		BIT(3)
+#define SUN6I_ISP_MODULE_EN_BDNF		BIT(4)
+#define SUN6I_ISP_MODULE_EN_AWB			BIT(6)
+#define SUN6I_ISP_MODULE_EN_WB			BIT(7)
+#define SUN6I_ISP_MODULE_EN_LSC			BIT(8)
+#define SUN6I_ISP_MODULE_EN_BGC			BIT(9)
+#define SUN6I_ISP_MODULE_EN_SAP			BIT(10)
+#define SUN6I_ISP_MODULE_EN_AF			BIT(11)
+#define SUN6I_ISP_MODULE_EN_RGB2RGB		BIT(12)
+#define SUN6I_ISP_MODULE_EN_RGB_DRC		BIT(13)
+#define SUN6I_ISP_MODULE_EN_TDNF		BIT(15)
+#define SUN6I_ISP_MODULE_EN_AFS			BIT(16)
+#define SUN6I_ISP_MODULE_EN_HIST		BIT(17)
+#define SUN6I_ISP_MODULE_EN_YUV_GAIN_OFFSET	BIT(18)
+#define SUN6I_ISP_MODULE_EN_YUV_DRC		BIT(19)
+#define SUN6I_ISP_MODULE_EN_TG			BIT(20)
+#define SUN6I_ISP_MODULE_EN_ROT			BIT(21)
+#define SUN6I_ISP_MODULE_EN_CONTRAST		BIT(22)
+#define SUN6I_ISP_MODULE_EN_SATU		BIT(24)
+#define SUN6I_ISP_MODULE_EN_SRC1		BIT(30)
+#define SUN6I_ISP_MODULE_EN_SRC0		BIT(31)
+
+#define SUN6I_ISP_MODE_REG			0x44
+#define SUN6I_ISP_MODE_INPUT_FMT(v)		((v) & GENMASK(2, 0))
+#define SUN6I_ISP_MODE_INPUT_YUV_SEQ(v)		(((v) << 3) & GENMASK(4, 3))
+#define SUN6I_ISP_MODE_OTF_DPC(v)		(((v) << 16) & BIT(16))
+#define SUN6I_ISP_MODE_SHARP(v)			(((v) << 17) & BIT(17))
+#define SUN6I_ISP_MODE_HIST(v)			(((v) << 20) & GENMASK(21, 20))
+
+#define SUN6I_ISP_INPUT_FMT_YUV420		0
+#define SUN6I_ISP_INPUT_FMT_YUV422		1
+#define SUN6I_ISP_INPUT_FMT_RAW_BGGR		4
+#define SUN6I_ISP_INPUT_FMT_RAW_RGGB		5
+#define SUN6I_ISP_INPUT_FMT_RAW_GBRG		6
+#define SUN6I_ISP_INPUT_FMT_RAW_GRBG		7
+
+#define SUN6I_ISP_INPUT_YUV_SEQ_YUYV		0
+#define SUN6I_ISP_INPUT_YUV_SEQ_YVYU		1
+#define SUN6I_ISP_INPUT_YUV_SEQ_UYVY		2
+#define SUN6I_ISP_INPUT_YUV_SEQ_VYUY		3
+
+#define SUN6I_ISP_IN_CFG_REG			0x48
+#define SUN6I_ISP_IN_CFG_STRIDE_DIV16(v)	((v) & GENMASK(10, 0))
+
+#define SUN6I_ISP_IN_LUMA_RGB_ADDR0_REG		0x4c
+#define SUN6I_ISP_IN_CHROMA_ADDR0_REG		0x50
+#define SUN6I_ISP_IN_LUMA_RGB_ADDR1_REG		0x54
+#define SUN6I_ISP_IN_CHROMA_ADDR1_REG		0x58
+
+/* AE */
+
+#define SUN6I_ISP_AE_CFG_REG			0x60
+#define SUN6I_ISP_AE_CFG_LOW_BRI_TH(v)		((v) & GENMASK(11, 0))
+#define SUN6I_ISP_AE_CFG_HORZ_NUM(v)		(((v) << 12) & GENMASK(15, 12))
+#define SUN6I_ISP_AE_CFG_HIGH_BRI_TH(v)		(((v) << 16) & GENMASK(27, 16))
+#define SUN6I_ISP_AE_CFG_VERT_NUM(v)		(((v) << 28) & GENMASK(31, 28))
+
+#define SUN6I_ISP_AE_SIZE_REG			0x64
+#define SUN6I_ISP_AE_SIZE_WIDTH(v)		((v) & GENMASK(10, 0))
+#define SUN6I_ISP_AE_SIZE_HEIGHT(v)		(((v) << 16) & GENMASK(26, 16))
+
+#define SUN6I_ISP_AE_POS_REG			0x68
+#define SUN6I_ISP_AE_POS_HORZ_START(v)		((v) & GENMASK(10, 0))
+#define SUN6I_ISP_AE_POS_VERT_START(v)		(((v) << 16) & GENMASK(26, 16))
+
+/* OB */
+
+#define SUN6I_ISP_OB_SIZE_REG			0x78
+#define SUN6I_ISP_OB_SIZE_WIDTH(v)		((v) & GENMASK(13, 0))
+#define SUN6I_ISP_OB_SIZE_HEIGHT(v)		(((v) << 16) & GENMASK(29, 16))
+
+#define SUN6I_ISP_OB_VALID_REG			0x7c
+#define SUN6I_ISP_OB_VALID_WIDTH(v)		((v) & GENMASK(12, 0))
+#define SUN6I_ISP_OB_VALID_HEIGHT(v)		(((v) << 16) & GENMASK(28, 16))
+
+#define SUN6I_ISP_OB_SRC0_VALID_START_REG	0x80
+#define SUN6I_ISP_OB_SRC0_VALID_START_HORZ(v)	((v) & GENMASK(11, 0))
+#define SUN6I_ISP_OB_SRC0_VALID_START_VERT(v)	(((v) << 16) & GENMASK(27, 16))
+
+#define SUN6I_ISP_OB_SRC1_VALID_START_REG	0x84
+#define SUN6I_ISP_OB_SRC1_VALID_START_HORZ(v)	((v) & GENMASK(11, 0))
+#define SUN6I_ISP_OB_SRC1_VALID_START_VERT(v)	(((v) << 16) & GENMASK(27, 16))
+
+#define SUN6I_ISP_OB_SPRITE_REG			0x88
+#define SUN6I_ISP_OB_SPRITE_WIDTH(v)		((v) & GENMASK(12, 0))
+#define SUN6I_ISP_OB_SPRITE_HEIGHT(v)		(((v) << 16) & GENMASK(28, 16))
+
+#define SUN6I_ISP_OB_SPRITE_START_REG		0x8c
+#define SUN6I_ISP_OB_SPRITE_START_HORZ(v)	((v) & GENMASK(11, 0))
+#define SUN6I_ISP_OB_SPRITE_START_VERT(v)	(((v) << 16) & GENMASK(27, 16))
+
+#define SUN6I_ISP_OB_CFG_REG			0x90
+#define SUN6I_ISP_OB_HORZ_POS_REG		0x94
+#define SUN6I_ISP_OB_VERT_PARA_REG		0x98
+#define SUN6I_ISP_OB_OFFSET_FIXED_REG		0x9c
+
+/* BDNF */
+
+#define SUN6I_ISP_BDNF_CFG_REG			0xcc
+#define SUN6I_ISP_BDNF_CFG_IN_DIS_MIN(v)	((v) & GENMASK(7, 0))
+#define SUN6I_ISP_BDNF_CFG_IN_DIS_MAX(v)	(((v) << 16) & GENMASK(23, 16))
+
+#define SUN6I_ISP_BDNF_COEF_RB_REG		0xd0
+#define SUN6I_ISP_BDNF_COEF_RB(i, v)		(((v) << (4 * (i))) & \
+						 GENMASK(4 * (i) + 3, 4 * (i)))
+
+#define SUN6I_ISP_BDNF_COEF_G_REG		0xd4
+#define SUN6I_ISP_BDNF_COEF_G(i, v)		(((v) << (4 * (i))) & \
+						 GENMASK(4 * (i) + 3, 4 * (i)))
+
+/* Bayer */
+
+#define SUN6I_ISP_BAYER_OFFSET0_REG		0xe0
+#define SUN6I_ISP_BAYER_OFFSET0_R(v)		((v) & GENMASK(12, 0))
+#define SUN6I_ISP_BAYER_OFFSET0_GR(v)		(((v) << 16) & GENMASK(28, 16))
+
+#define SUN6I_ISP_BAYER_OFFSET1_REG		0xe4
+#define SUN6I_ISP_BAYER_OFFSET1_GB(v)		((v) & GENMASK(12, 0))
+#define SUN6I_ISP_BAYER_OFFSET1_B(v)		(((v) << 16) & GENMASK(28, 16))
+
+#define SUN6I_ISP_BAYER_GAIN0_REG		0xe8
+#define SUN6I_ISP_BAYER_GAIN0_R(v)		((v) & GENMASK(11, 0))
+#define SUN6I_ISP_BAYER_GAIN0_GR(v)		(((v) << 16) & GENMASK(27, 16))
+
+#define SUN6I_ISP_BAYER_GAIN1_REG		0xec
+#define SUN6I_ISP_BAYER_GAIN1_GB(v)		((v) & GENMASK(11, 0))
+#define SUN6I_ISP_BAYER_GAIN1_B(v)		(((v) << 16) & GENMASK(27, 16))
+
+/* WB */
+
+#define SUN6I_ISP_WB_GAIN0_REG			0x140
+#define SUN6I_ISP_WB_GAIN0_R(v)			((v) & GENMASK(11, 0))
+#define SUN6I_ISP_WB_GAIN0_GR(v)		(((v) << 16) & GENMASK(27, 16))
+
+#define SUN6I_ISP_WB_GAIN1_REG			0x144
+#define SUN6I_ISP_WB_GAIN1_GB(v)		((v) & GENMASK(11, 0))
+#define SUN6I_ISP_WB_GAIN1_B(v)			(((v) << 16) & GENMASK(27, 16))
+
+#define SUN6I_ISP_WB_CFG_REG			0x148
+#define SUN6I_ISP_WB_CFG_CLIP(v)		((v) & GENMASK(11, 0))
+
+/* Global */
+
+#define SUN6I_ISP_MCH_SIZE_CFG_REG		0x1e0
+#define SUN6I_ISP_MCH_SIZE_CFG_WIDTH(v)		((v) & GENMASK(12, 0))
+#define SUN6I_ISP_MCH_SIZE_CFG_HEIGHT(v)	(((v) << 16) & GENMASK(28, 16))
+
+#define SUN6I_ISP_MCH_SCALE_CFG_REG		0x1e4
+#define SUN6I_ISP_MCH_SCALE_CFG_X_RATIO(v)	((v) & GENMASK(11, 0))
+#define SUN6I_ISP_MCH_SCALE_CFG_Y_RATIO(v)	(((v) << 16) & GENMASK(27, 16))
+#define SUN6I_ISP_MCH_SCALE_CFG_WEIGHT_SHIFT(v)	(((v) << 28) & GENMASK(31, 28))
+
+#define SUN6I_ISP_SCH_SIZE_CFG_REG		0x1e8
+#define SUN6I_ISP_SCH_SIZE_CFG_WIDTH(v)		((v) & GENMASK(12, 0))
+#define SUN6I_ISP_SCH_SIZE_CFG_HEIGHT(v)	(((v) << 16) & GENMASK(28, 16))
+
+#define SUN6I_ISP_SCH_SCALE_CFG_REG		0x1ec
+#define SUN6I_ISP_SCH_SCALE_CFG_X_RATIO(v)	((v) & GENMASK(11, 0))
+#define SUN6I_ISP_SCH_SCALE_CFG_Y_RATIO(v)	(((v) << 16) & GENMASK(27, 16))
+#define SUN6I_ISP_SCH_SCALE_CFG_WEIGHT_SHIFT(v)	(((v) << 28) & GENMASK(31, 28))
+
+#define SUN6I_ISP_MCH_CFG_REG			0x1f0
+#define SUN6I_ISP_MCH_CFG_EN			BIT(0)
+#define SUN6I_ISP_MCH_CFG_SCALE_EN		BIT(1)
+#define SUN6I_ISP_MCH_CFG_OUTPUT_FMT(v)		(((v) << 2) & GENMASK(4, 2))
+#define SUN6I_ISP_MCH_CFG_MIRROR_EN		BIT(5)
+#define SUN6I_ISP_MCH_CFG_FLIP_EN		BIT(6)
+#define SUN6I_ISP_MCH_CFG_STRIDE_Y_DIV4(v)	(((v) << 8) & GENMASK(18, 8))
+#define SUN6I_ISP_MCH_CFG_STRIDE_UV_DIV4(v)	(((v) << 20) & GENMASK(30, 20))
+
+#define SUN6I_ISP_OUTPUT_FMT_YUV420SP		0
+#define SUN6I_ISP_OUTPUT_FMT_YUV422SP		1
+#define SUN6I_ISP_OUTPUT_FMT_YVU420SP		2
+#define SUN6I_ISP_OUTPUT_FMT_YVU422SP		3
+#define SUN6I_ISP_OUTPUT_FMT_YUV420P		4
+#define SUN6I_ISP_OUTPUT_FMT_YUV422P		5
+#define SUN6I_ISP_OUTPUT_FMT_YVU420P		6
+#define SUN6I_ISP_OUTPUT_FMT_YVU422P		7
+
+#define SUN6I_ISP_SCH_CFG_REG			0x1f4
+
+#define SUN6I_ISP_MCH_Y_ADDR0_REG		0x1f8
+#define SUN6I_ISP_MCH_U_ADDR0_REG		0x1fc
+#define SUN6I_ISP_MCH_V_ADDR0_REG		0x200
+#define SUN6I_ISP_MCH_Y_ADDR1_REG		0x204
+#define SUN6I_ISP_MCH_U_ADDR1_REG		0x208
+#define SUN6I_ISP_MCH_V_ADDR1_REG		0x20c
+#define SUN6I_ISP_SCH_Y_ADDR0_REG		0x210
+#define SUN6I_ISP_SCH_U_ADDR0_REG		0x214
+#define SUN6I_ISP_SCH_V_ADDR0_REG		0x218
+#define SUN6I_ISP_SCH_Y_ADDR1_REG		0x21c
+#define SUN6I_ISP_SCH_U_ADDR1_REG		0x220
+#define SUN6I_ISP_SCH_V_ADDR1_REG		0x224
+
+#endif
diff --git a/drivers/staging/media/sunxi/sun6i-isp/uapi/sun6i-isp-config.h b/drivers/staging/media/sunxi/sun6i-isp/uapi/sun6i-isp-config.h
new file mode 100644
index 000000000000..fd2a0820aa98
--- /dev/null
+++ b/drivers/staging/media/sunxi/sun6i-isp/uapi/sun6i-isp-config.h
@@ -0,0 +1,43 @@ 
+/* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR MIT) */
+/*
+ * Allwinner A31 ISP Configuration
+ */
+
+#ifndef _UAPI_SUN6I_ISP_CONFIG_H
+#define _UAPI_SUN6I_ISP_CONFIG_H
+
+#include <linux/types.h>
+
+#define V4L2_META_FMT_SUN6I_ISP_PARAMS v4l2_fourcc('S', '6', 'I', 'P') /* Allwinner A31 ISP Parameters */
+
+#define SUN6I_ISP_MODULE_BAYER			(1U << 0)
+#define SUN6I_ISP_MODULE_BDNF			(1U << 1)
+
+struct sun6i_isp_params_config_bayer {
+	__u16	offset_r;
+	__u16	offset_gr;
+	__u16	offset_gb;
+	__u16	offset_b;
+
+	__u16	gain_r;
+	__u16	gain_gr;
+	__u16	gain_gb;
+	__u16	gain_b;
+};
+
+struct sun6i_isp_params_config_bdnf {
+	__u8	in_dis_min; // 8
+	__u8	in_dis_max; // 10
+
+	__u8	coefficients_g[7];
+	__u8	coefficients_rb[5];
+};
+
+struct sun6i_isp_params_config {
+	__u32					modules_used;
+
+	struct sun6i_isp_params_config_bayer	bayer;
+	struct sun6i_isp_params_config_bdnf	bdnf;
+};
+
+#endif /* _UAPI_SUN6I_ISP_CONFIG_H */