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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/media/platform/sunxi/sun6i-csi
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/platform/sunxi/sun6i-csi')
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/Kconfig15
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/Makefile4
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c439
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h63
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c868
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h69
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c1102
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h89
-rw-r--r--drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h184
9 files changed, 2833 insertions, 0 deletions
diff --git a/drivers/media/platform/sunxi/sun6i-csi/Kconfig b/drivers/media/platform/sunxi/sun6i-csi/Kconfig
new file mode 100644
index 0000000000..886006f6a4
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/Kconfig
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_SUN6I_CSI
+ tristate "Allwinner A31 Camera Sensor Interface (CSI) Driver"
+ depends on V4L_PLATFORM_DRIVERS && VIDEO_DEV
+ depends on ARCH_SUNXI || COMPILE_TEST
+ depends on PM && COMMON_CLK && RESET_CONTROLLER && HAS_DMA
+ select MEDIA_CONTROLLER
+ select VIDEO_V4L2_SUBDEV_API
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_FWNODE
+ select REGMAP_MMIO
+ help
+ Support for the Allwinner A31 Camera Sensor Interface (CSI)
+ controller, also found on other platforms such as the A83T, H3,
+ V3/V3s or A64.
diff --git a/drivers/media/platform/sunxi/sun6i-csi/Makefile b/drivers/media/platform/sunxi/sun6i-csi/Makefile
new file mode 100644
index 0000000000..87e7a71514
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+sun6i-csi-y += sun6i_csi.o sun6i_csi_bridge.o sun6i_csi_capture.o
+
+obj-$(CONFIG_VIDEO_SUN6I_CSI) += sun6i-csi.o
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
new file mode 100644
index 0000000000..c6ba385c0c
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
@@ -0,0 +1,439 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
+ * Author: Yong Deng <yong.deng@magewell.com>
+ * Copyright 2021-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <linux/clk.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-device.h>
+#include <media/v4l2-mc.h>
+
+#include "sun6i_csi.h"
+#include "sun6i_csi_bridge.h"
+#include "sun6i_csi_capture.h"
+#include "sun6i_csi_reg.h"
+
+/* ISP */
+
+int sun6i_csi_isp_complete(struct sun6i_csi_device *csi_dev,
+ struct v4l2_device *v4l2_dev)
+{
+ if (csi_dev->v4l2_dev && csi_dev->v4l2_dev != v4l2_dev)
+ return -EINVAL;
+
+ csi_dev->v4l2_dev = v4l2_dev;
+ csi_dev->media_dev = v4l2_dev->mdev;
+
+ return sun6i_csi_capture_setup(csi_dev);
+}
+
+static int sun6i_csi_isp_detect(struct sun6i_csi_device *csi_dev)
+{
+ struct device *dev = csi_dev->dev;
+ struct fwnode_handle *handle;
+
+ /*
+ * ISP is not available if not connected via fwnode graph.
+ * This will also check that the remote parent node is available.
+ */
+ handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ SUN6I_CSI_PORT_ISP, 0,
+ FWNODE_GRAPH_ENDPOINT_NEXT);
+ if (!handle)
+ return 0;
+
+ fwnode_handle_put(handle);
+
+ if (!IS_ENABLED(CONFIG_VIDEO_SUN6I_ISP)) {
+ dev_warn(dev,
+ "ISP link is detected but not enabled in kernel config!");
+ return 0;
+ }
+
+ csi_dev->isp_available = true;
+
+ return 0;
+}
+
+/* Media */
+
+static const struct media_device_ops sun6i_csi_media_ops = {
+ .link_notify = v4l2_pipeline_link_notify,
+};
+
+/* V4L2 */
+
+static int sun6i_csi_v4l2_setup(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_csi_v4l2 *v4l2 = &csi_dev->v4l2;
+ struct media_device *media_dev = &v4l2->media_dev;
+ struct v4l2_device *v4l2_dev = &v4l2->v4l2_dev;
+ struct device *dev = csi_dev->dev;
+ int ret;
+
+ /* Media Device */
+
+ strscpy(media_dev->model, SUN6I_CSI_DESCRIPTION,
+ sizeof(media_dev->model));
+ media_dev->hw_revision = 0;
+ media_dev->ops = &sun6i_csi_media_ops;
+ 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: %d\n", ret);
+ goto error_media;
+ }
+
+ /* V4L2 Device */
+
+ v4l2_dev->mdev = media_dev;
+
+ ret = v4l2_device_register(dev, v4l2_dev);
+ if (ret) {
+ dev_err(dev, "failed to register v4l2 device: %d\n", ret);
+ goto error_media;
+ }
+
+ csi_dev->v4l2_dev = v4l2_dev;
+ csi_dev->media_dev = media_dev;
+
+ return 0;
+
+error_media:
+ media_device_unregister(media_dev);
+ media_device_cleanup(media_dev);
+
+ return ret;
+}
+
+static void sun6i_csi_v4l2_cleanup(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_csi_v4l2 *v4l2 = &csi_dev->v4l2;
+
+ media_device_unregister(&v4l2->media_dev);
+ v4l2_device_unregister(&v4l2->v4l2_dev);
+ media_device_cleanup(&v4l2->media_dev);
+}
+
+/* Platform */
+
+static irqreturn_t sun6i_csi_interrupt(int irq, void *private)
+{
+ struct sun6i_csi_device *csi_dev = private;
+ bool capture_streaming = csi_dev->capture.state.streaming;
+ struct regmap *regmap = csi_dev->regmap;
+ u32 status = 0, enable = 0;
+
+ regmap_read(regmap, SUN6I_CSI_CH_INT_STA_REG, &status);
+ regmap_read(regmap, SUN6I_CSI_CH_INT_EN_REG, &enable);
+
+ if (!status)
+ return IRQ_NONE;
+ else if (!(status & enable) || !capture_streaming)
+ goto complete;
+
+ if ((status & SUN6I_CSI_CH_INT_STA_FIFO0_OF) ||
+ (status & SUN6I_CSI_CH_INT_STA_FIFO1_OF) ||
+ (status & SUN6I_CSI_CH_INT_STA_FIFO2_OF) ||
+ (status & SUN6I_CSI_CH_INT_STA_HB_OF)) {
+ regmap_write(regmap, SUN6I_CSI_CH_INT_STA_REG, status);
+
+ regmap_update_bits(regmap, SUN6I_CSI_EN_REG,
+ SUN6I_CSI_EN_CSI_EN, 0);
+ regmap_update_bits(regmap, SUN6I_CSI_EN_REG,
+ SUN6I_CSI_EN_CSI_EN, SUN6I_CSI_EN_CSI_EN);
+ return IRQ_HANDLED;
+ }
+
+ if (status & SUN6I_CSI_CH_INT_STA_FD)
+ sun6i_csi_capture_frame_done(csi_dev);
+
+ if (status & SUN6I_CSI_CH_INT_STA_VS)
+ sun6i_csi_capture_sync(csi_dev);
+
+complete:
+ regmap_write(regmap, SUN6I_CSI_CH_INT_STA_REG, status);
+
+ return IRQ_HANDLED;
+}
+
+static int sun6i_csi_suspend(struct device *dev)
+{
+ struct sun6i_csi_device *csi_dev = dev_get_drvdata(dev);
+
+ reset_control_assert(csi_dev->reset);
+ clk_disable_unprepare(csi_dev->clock_ram);
+ clk_disable_unprepare(csi_dev->clock_mod);
+
+ return 0;
+}
+
+static int sun6i_csi_resume(struct device *dev)
+{
+ struct sun6i_csi_device *csi_dev = dev_get_drvdata(dev);
+ int ret;
+
+ ret = reset_control_deassert(csi_dev->reset);
+ if (ret) {
+ dev_err(dev, "failed to deassert reset\n");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(csi_dev->clock_mod);
+ if (ret) {
+ dev_err(dev, "failed to enable module clock\n");
+ goto error_reset;
+ }
+
+ ret = clk_prepare_enable(csi_dev->clock_ram);
+ if (ret) {
+ dev_err(dev, "failed to enable ram clock\n");
+ goto error_clock_mod;
+ }
+
+ return 0;
+
+error_clock_mod:
+ clk_disable_unprepare(csi_dev->clock_mod);
+
+error_reset:
+ reset_control_assert(csi_dev->reset);
+
+ return ret;
+}
+
+static const struct dev_pm_ops sun6i_csi_pm_ops = {
+ .runtime_suspend = sun6i_csi_suspend,
+ .runtime_resume = sun6i_csi_resume,
+};
+
+static const struct regmap_config sun6i_csi_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0x9c,
+};
+
+static int sun6i_csi_resources_setup(struct sun6i_csi_device *csi_dev,
+ struct platform_device *platform_dev)
+{
+ struct device *dev = csi_dev->dev;
+ const struct sun6i_csi_variant *variant;
+ void __iomem *io_base;
+ int ret;
+ int irq;
+
+ variant = of_device_get_match_data(dev);
+ if (!variant)
+ return -EINVAL;
+
+ /* Registers */
+
+ io_base = devm_platform_ioremap_resource(platform_dev, 0);
+ if (IS_ERR(io_base))
+ return PTR_ERR(io_base);
+
+ csi_dev->regmap = devm_regmap_init_mmio_clk(dev, "bus", io_base,
+ &sun6i_csi_regmap_config);
+ if (IS_ERR(csi_dev->regmap)) {
+ dev_err(dev, "failed to init register map\n");
+ return PTR_ERR(csi_dev->regmap);
+ }
+
+ /* Clocks */
+
+ csi_dev->clock_mod = devm_clk_get(dev, "mod");
+ if (IS_ERR(csi_dev->clock_mod)) {
+ dev_err(dev, "failed to acquire module clock\n");
+ return PTR_ERR(csi_dev->clock_mod);
+ }
+
+ csi_dev->clock_ram = devm_clk_get(dev, "ram");
+ if (IS_ERR(csi_dev->clock_ram)) {
+ dev_err(dev, "failed to acquire ram clock\n");
+ return PTR_ERR(csi_dev->clock_ram);
+ }
+
+ ret = clk_set_rate_exclusive(csi_dev->clock_mod,
+ variant->clock_mod_rate);
+ if (ret) {
+ dev_err(dev, "failed to set mod clock rate\n");
+ return ret;
+ }
+
+ /* Reset */
+
+ csi_dev->reset = devm_reset_control_get_shared(dev, NULL);
+ if (IS_ERR(csi_dev->reset)) {
+ dev_err(dev, "failed to acquire reset\n");
+ ret = PTR_ERR(csi_dev->reset);
+ goto error_clock_rate_exclusive;
+ }
+
+ /* Interrupt */
+
+ irq = platform_get_irq(platform_dev, 0);
+ if (irq < 0) {
+ ret = -ENXIO;
+ goto error_clock_rate_exclusive;
+ }
+
+ ret = devm_request_irq(dev, irq, sun6i_csi_interrupt, IRQF_SHARED,
+ SUN6I_CSI_NAME, csi_dev);
+ if (ret) {
+ dev_err(dev, "failed to request interrupt\n");
+ goto error_clock_rate_exclusive;
+ }
+
+ /* Runtime PM */
+
+ pm_runtime_enable(dev);
+
+ return 0;
+
+error_clock_rate_exclusive:
+ clk_rate_exclusive_put(csi_dev->clock_mod);
+
+ return ret;
+}
+
+static void sun6i_csi_resources_cleanup(struct sun6i_csi_device *csi_dev)
+{
+ pm_runtime_disable(csi_dev->dev);
+ clk_rate_exclusive_put(csi_dev->clock_mod);
+}
+
+static int sun6i_csi_probe(struct platform_device *platform_dev)
+{
+ struct sun6i_csi_device *csi_dev;
+ struct device *dev = &platform_dev->dev;
+ int ret;
+
+ csi_dev = devm_kzalloc(dev, sizeof(*csi_dev), GFP_KERNEL);
+ if (!csi_dev)
+ return -ENOMEM;
+
+ csi_dev->dev = &platform_dev->dev;
+ platform_set_drvdata(platform_dev, csi_dev);
+
+ ret = sun6i_csi_resources_setup(csi_dev, platform_dev);
+ if (ret)
+ return ret;
+
+ ret = sun6i_csi_isp_detect(csi_dev);
+ if (ret)
+ goto error_resources;
+
+ /*
+ * Register our own v4l2 and media devices when there is no ISP around.
+ * Otherwise the ISP will use async subdev registration with our bridge,
+ * which will provide v4l2 and media devices that are used to register
+ * the video interface.
+ */
+ if (!csi_dev->isp_available) {
+ ret = sun6i_csi_v4l2_setup(csi_dev);
+ if (ret)
+ goto error_resources;
+ }
+
+ ret = sun6i_csi_bridge_setup(csi_dev);
+ if (ret)
+ goto error_v4l2;
+
+ if (!csi_dev->isp_available) {
+ ret = sun6i_csi_capture_setup(csi_dev);
+ if (ret)
+ goto error_bridge;
+ }
+
+ return 0;
+
+error_bridge:
+ sun6i_csi_bridge_cleanup(csi_dev);
+
+error_v4l2:
+ if (!csi_dev->isp_available)
+ sun6i_csi_v4l2_cleanup(csi_dev);
+
+error_resources:
+ sun6i_csi_resources_cleanup(csi_dev);
+
+ return ret;
+}
+
+static void sun6i_csi_remove(struct platform_device *pdev)
+{
+ struct sun6i_csi_device *csi_dev = platform_get_drvdata(pdev);
+
+ sun6i_csi_capture_cleanup(csi_dev);
+ sun6i_csi_bridge_cleanup(csi_dev);
+
+ if (!csi_dev->isp_available)
+ sun6i_csi_v4l2_cleanup(csi_dev);
+
+ sun6i_csi_resources_cleanup(csi_dev);
+}
+
+static const struct sun6i_csi_variant sun6i_a31_csi_variant = {
+ .clock_mod_rate = 297000000,
+};
+
+static const struct sun6i_csi_variant sun50i_a64_csi_variant = {
+ .clock_mod_rate = 300000000,
+};
+
+static const struct of_device_id sun6i_csi_of_match[] = {
+ {
+ .compatible = "allwinner,sun6i-a31-csi",
+ .data = &sun6i_a31_csi_variant,
+ },
+ {
+ .compatible = "allwinner,sun8i-a83t-csi",
+ .data = &sun6i_a31_csi_variant,
+ },
+ {
+ .compatible = "allwinner,sun8i-h3-csi",
+ .data = &sun6i_a31_csi_variant,
+ },
+ {
+ .compatible = "allwinner,sun8i-v3s-csi",
+ .data = &sun6i_a31_csi_variant,
+ },
+ {
+ .compatible = "allwinner,sun50i-a64-csi",
+ .data = &sun50i_a64_csi_variant,
+ },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, sun6i_csi_of_match);
+
+static struct platform_driver sun6i_csi_platform_driver = {
+ .probe = sun6i_csi_probe,
+ .remove_new = sun6i_csi_remove,
+ .driver = {
+ .name = SUN6I_CSI_NAME,
+ .of_match_table = sun6i_csi_of_match,
+ .pm = &sun6i_csi_pm_ops,
+ },
+};
+
+module_platform_driver(sun6i_csi_platform_driver);
+
+MODULE_DESCRIPTION("Allwinner A31 Camera Sensor Interface driver");
+MODULE_AUTHOR("Yong Deng <yong.deng@magewell.com>");
+MODULE_AUTHOR("Paul Kocialkowski <paul.kocialkowski@bootlin.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
new file mode 100644
index 0000000000..bc3f0dae35
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
+ * Author: Yong Deng <yong.deng@magewell.com>
+ * Copyright 2021-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_CSI_H_
+#define _SUN6I_CSI_H_
+
+#include <media/v4l2-device.h>
+#include <media/videobuf2-v4l2.h>
+
+#include "sun6i_csi_bridge.h"
+#include "sun6i_csi_capture.h"
+
+#define SUN6I_CSI_NAME "sun6i-csi"
+#define SUN6I_CSI_DESCRIPTION "Allwinner A31 CSI Device"
+
+enum sun6i_csi_port {
+ SUN6I_CSI_PORT_PARALLEL = 0,
+ SUN6I_CSI_PORT_MIPI_CSI2 = 1,
+ SUN6I_CSI_PORT_ISP = 2,
+};
+
+struct sun6i_csi_buffer {
+ struct vb2_v4l2_buffer v4l2_buffer;
+ struct list_head list;
+};
+
+struct sun6i_csi_v4l2 {
+ struct v4l2_device v4l2_dev;
+ struct media_device media_dev;
+};
+
+struct sun6i_csi_device {
+ struct device *dev;
+ struct v4l2_device *v4l2_dev;
+ struct media_device *media_dev;
+
+ struct sun6i_csi_v4l2 v4l2;
+ struct sun6i_csi_bridge bridge;
+ struct sun6i_csi_capture capture;
+
+ struct regmap *regmap;
+ struct clk *clock_mod;
+ struct clk *clock_ram;
+ struct reset_control *reset;
+
+ bool isp_available;
+};
+
+struct sun6i_csi_variant {
+ unsigned long clock_mod_rate;
+};
+
+/* ISP */
+
+int sun6i_csi_isp_complete(struct sun6i_csi_device *csi_dev,
+ struct v4l2_device *v4l2_dev);
+
+#endif
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
new file mode 100644
index 0000000000..e573413123
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
@@ -0,0 +1,868 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021-2022 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_csi.h"
+#include "sun6i_csi_bridge.h"
+#include "sun6i_csi_reg.h"
+
+/* Helpers */
+
+void sun6i_csi_bridge_dimensions(struct sun6i_csi_device *csi_dev,
+ unsigned int *width, unsigned int *height)
+{
+ if (width)
+ *width = csi_dev->bridge.mbus_format.width;
+ if (height)
+ *height = csi_dev->bridge.mbus_format.height;
+}
+
+void sun6i_csi_bridge_format(struct sun6i_csi_device *csi_dev,
+ u32 *mbus_code, u32 *field)
+{
+ if (mbus_code)
+ *mbus_code = csi_dev->bridge.mbus_format.code;
+ if (field)
+ *field = csi_dev->bridge.mbus_format.field;
+}
+
+/* Format */
+
+static const struct sun6i_csi_bridge_format sun6i_csi_bridge_formats[] = {
+ /* Bayer */
+ {
+ .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SBGGR12_1X12,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SGBRG12_1X12,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SRGGB12_1X12,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ /* RGB */
+ {
+ .mbus_code = MEDIA_BUS_FMT_RGB565_2X8_LE,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_RGB565_2X8_BE,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+ /* YUV422 */
+ {
+ .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_YUYV,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_YVYU,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_UYVY,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_VYUY,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_YVYU,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_YUYV,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_UYVY,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_VYUY,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_VYUY,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_UYVY,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_YUYV8_1X16,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_YUYV,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_YVYU,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_UYVY,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_VYUY,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_YVYU8_1X16,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_YVYU,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_YUYV,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_UYVY,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_VYUY,
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_VYUY8_1X16,
+ .input_format = SUN6I_CSI_INPUT_FMT_YUV422,
+ .input_yuv_seq = SUN6I_CSI_INPUT_YUV_SEQ_VYUY,
+ .input_yuv_seq_invert = SUN6I_CSI_INPUT_YUV_SEQ_UYVY,
+ },
+ /* Compressed */
+ {
+ .mbus_code = MEDIA_BUS_FMT_JPEG_1X8,
+ .input_format = SUN6I_CSI_INPUT_FMT_RAW,
+ },
+};
+
+const struct sun6i_csi_bridge_format *
+sun6i_csi_bridge_format_find(u32 mbus_code)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(sun6i_csi_bridge_formats); i++)
+ if (sun6i_csi_bridge_formats[i].mbus_code == mbus_code)
+ return &sun6i_csi_bridge_formats[i];
+
+ return NULL;
+}
+
+/* Bridge */
+
+static void sun6i_csi_bridge_irq_enable(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+
+ regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG,
+ SUN6I_CSI_CH_INT_EN_VS |
+ SUN6I_CSI_CH_INT_EN_HB_OF |
+ SUN6I_CSI_CH_INT_EN_FIFO2_OF |
+ SUN6I_CSI_CH_INT_EN_FIFO1_OF |
+ SUN6I_CSI_CH_INT_EN_FIFO0_OF |
+ SUN6I_CSI_CH_INT_EN_FD |
+ SUN6I_CSI_CH_INT_EN_CD);
+}
+
+static void sun6i_csi_bridge_irq_disable(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+
+ regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG, 0);
+}
+
+static void sun6i_csi_bridge_irq_clear(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+
+ regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG, 0);
+ regmap_write(regmap, SUN6I_CSI_CH_INT_STA_REG,
+ SUN6I_CSI_CH_INT_STA_CLEAR);
+}
+
+static void sun6i_csi_bridge_enable(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+
+ regmap_update_bits(regmap, SUN6I_CSI_EN_REG, SUN6I_CSI_EN_CSI_EN,
+ SUN6I_CSI_EN_CSI_EN);
+
+ regmap_update_bits(regmap, SUN6I_CSI_CAP_REG, SUN6I_CSI_CAP_VCAP_ON,
+ SUN6I_CSI_CAP_VCAP_ON);
+}
+
+static void sun6i_csi_bridge_disable(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+
+ regmap_update_bits(regmap, SUN6I_CSI_CAP_REG, SUN6I_CSI_CAP_VCAP_ON, 0);
+ regmap_update_bits(regmap, SUN6I_CSI_EN_REG, SUN6I_CSI_EN_CSI_EN, 0);
+}
+
+static void
+sun6i_csi_bridge_configure_parallel(struct sun6i_csi_device *csi_dev)
+{
+ struct device *dev = csi_dev->dev;
+ struct regmap *regmap = csi_dev->regmap;
+ struct v4l2_fwnode_endpoint *endpoint =
+ &csi_dev->bridge.source_parallel.endpoint;
+ unsigned char bus_width = endpoint->bus.parallel.bus_width;
+ unsigned int flags = endpoint->bus.parallel.flags;
+ u32 field;
+ u32 value = SUN6I_CSI_IF_CFG_IF_CSI;
+
+ sun6i_csi_bridge_format(csi_dev, NULL, &field);
+
+ if (field == V4L2_FIELD_INTERLACED ||
+ field == V4L2_FIELD_INTERLACED_TB ||
+ field == V4L2_FIELD_INTERLACED_BT)
+ value |= SUN6I_CSI_IF_CFG_SRC_TYPE_INTERLACED |
+ SUN6I_CSI_IF_CFG_FIELD_DT_PCLK_SHIFT(1) |
+ SUN6I_CSI_IF_CFG_FIELD_DT_FIELD_VSYNC;
+ else
+ value |= SUN6I_CSI_IF_CFG_SRC_TYPE_PROGRESSIVE;
+
+ switch (endpoint->bus_type) {
+ case V4L2_MBUS_PARALLEL:
+ if (bus_width == 16)
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_YUV_COMBINED;
+ else
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_YUV_RAW;
+
+ if (flags & V4L2_MBUS_FIELD_EVEN_LOW)
+ value |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE;
+ else
+ value |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE;
+
+ if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+ value |= SUN6I_CSI_IF_CFG_VREF_POL_NEGATIVE;
+ else
+ value |= SUN6I_CSI_IF_CFG_VREF_POL_POSITIVE;
+
+ if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+ value |= SUN6I_CSI_IF_CFG_HREF_POL_NEGATIVE;
+ else
+ value |= SUN6I_CSI_IF_CFG_HREF_POL_POSITIVE;
+
+ if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
+ value |= SUN6I_CSI_IF_CFG_CLK_POL_RISING;
+ else
+ value |= SUN6I_CSI_IF_CFG_CLK_POL_FALLING;
+ break;
+ case V4L2_MBUS_BT656:
+ if (bus_width == 16)
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_BT1120;
+ else
+ value |= SUN6I_CSI_IF_CFG_IF_CSI_BT656;
+
+ if (flags & V4L2_MBUS_FIELD_EVEN_LOW)
+ value |= SUN6I_CSI_IF_CFG_FIELD_NEGATIVE;
+ else
+ value |= SUN6I_CSI_IF_CFG_FIELD_POSITIVE;
+
+ if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
+ value |= SUN6I_CSI_IF_CFG_CLK_POL_RISING;
+ else
+ value |= SUN6I_CSI_IF_CFG_CLK_POL_FALLING;
+ break;
+ default:
+ dev_warn(dev, "unsupported bus type: %d\n", endpoint->bus_type);
+ break;
+ }
+
+ switch (bus_width) {
+ case 8:
+ /* 16-bit YUV formats use a doubled width in 8-bit mode. */
+ case 16:
+ value |= SUN6I_CSI_IF_CFG_DATA_WIDTH_8;
+ break;
+ case 10:
+ value |= SUN6I_CSI_IF_CFG_DATA_WIDTH_10;
+ break;
+ case 12:
+ value |= SUN6I_CSI_IF_CFG_DATA_WIDTH_12;
+ break;
+ default:
+ dev_warn(dev, "unsupported bus width: %u\n", bus_width);
+ break;
+ }
+
+ regmap_write(regmap, SUN6I_CSI_IF_CFG_REG, value);
+}
+
+static void
+sun6i_csi_bridge_configure_mipi_csi2(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+ u32 value = SUN6I_CSI_IF_CFG_IF_MIPI;
+ u32 field;
+
+ sun6i_csi_bridge_format(csi_dev, NULL, &field);
+
+ if (field == V4L2_FIELD_INTERLACED ||
+ field == V4L2_FIELD_INTERLACED_TB ||
+ field == V4L2_FIELD_INTERLACED_BT)
+ value |= SUN6I_CSI_IF_CFG_SRC_TYPE_INTERLACED;
+ else
+ value |= SUN6I_CSI_IF_CFG_SRC_TYPE_PROGRESSIVE;
+
+ regmap_write(regmap, SUN6I_CSI_IF_CFG_REG, value);
+}
+
+static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+ bool capture_streaming = csi_dev->capture.state.streaming;
+ const struct sun6i_csi_bridge_format *bridge_format;
+ const struct sun6i_csi_capture_format *capture_format;
+ u32 mbus_code, field, pixelformat;
+ u8 input_format, input_yuv_seq, output_format;
+ u32 value = 0;
+
+ sun6i_csi_bridge_format(csi_dev, &mbus_code, &field);
+
+ bridge_format = sun6i_csi_bridge_format_find(mbus_code);
+ if (WARN_ON(!bridge_format))
+ return;
+
+ input_format = bridge_format->input_format;
+ input_yuv_seq = bridge_format->input_yuv_seq;
+
+ if (capture_streaming) {
+ sun6i_csi_capture_format(csi_dev, &pixelformat, NULL);
+
+ capture_format = sun6i_csi_capture_format_find(pixelformat);
+ if (WARN_ON(!capture_format))
+ return;
+
+ if (capture_format->input_format_raw)
+ input_format = SUN6I_CSI_INPUT_FMT_RAW;
+
+ if (capture_format->input_yuv_seq_invert)
+ input_yuv_seq = bridge_format->input_yuv_seq_invert;
+
+ if (field == V4L2_FIELD_INTERLACED ||
+ field == V4L2_FIELD_INTERLACED_TB ||
+ field == V4L2_FIELD_INTERLACED_BT)
+ output_format = capture_format->output_format_field;
+ else
+ output_format = capture_format->output_format_frame;
+
+ value |= SUN6I_CSI_CH_CFG_OUTPUT_FMT(output_format);
+ }
+
+ value |= SUN6I_CSI_CH_CFG_INPUT_FMT(input_format);
+ value |= SUN6I_CSI_CH_CFG_INPUT_YUV_SEQ(input_yuv_seq);
+
+ if (field == V4L2_FIELD_TOP)
+ value |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD0;
+ else if (field == V4L2_FIELD_BOTTOM)
+ value |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD1;
+ else
+ value |= SUN6I_CSI_CH_CFG_FIELD_SEL_EITHER;
+
+ regmap_write(regmap, SUN6I_CSI_CH_CFG_REG, value);
+}
+
+static void sun6i_csi_bridge_configure(struct sun6i_csi_device *csi_dev,
+ struct sun6i_csi_bridge_source *source)
+{
+ struct sun6i_csi_bridge *bridge = &csi_dev->bridge;
+
+ if (source == &bridge->source_parallel)
+ sun6i_csi_bridge_configure_parallel(csi_dev);
+ else
+ sun6i_csi_bridge_configure_mipi_csi2(csi_dev);
+
+ sun6i_csi_bridge_configure_format(csi_dev);
+}
+
+/* V4L2 Subdev */
+
+static int sun6i_csi_bridge_s_stream(struct v4l2_subdev *subdev, int on)
+{
+ struct sun6i_csi_device *csi_dev = v4l2_get_subdevdata(subdev);
+ struct sun6i_csi_bridge *bridge = &csi_dev->bridge;
+ struct media_pad *local_pad = &bridge->pads[SUN6I_CSI_BRIDGE_PAD_SINK];
+ bool capture_streaming = csi_dev->capture.state.streaming;
+ struct device *dev = csi_dev->dev;
+ struct sun6i_csi_bridge_source *source;
+ struct v4l2_subdev *source_subdev;
+ struct media_pad *remote_pad;
+ int ret;
+
+ /* Source */
+
+ remote_pad = media_pad_remote_pad_unique(local_pad);
+ if (IS_ERR(remote_pad)) {
+ dev_err(dev,
+ "zero or more than a single source connected to the bridge\n");
+ return PTR_ERR(remote_pad);
+ }
+
+ source_subdev = media_entity_to_v4l2_subdev(remote_pad->entity);
+
+ if (source_subdev == bridge->source_parallel.subdev)
+ source = &bridge->source_parallel;
+ else
+ source = &bridge->source_mipi_csi2;
+
+ if (!on) {
+ v4l2_subdev_call(source_subdev, video, s_stream, 0);
+ ret = 0;
+ goto disable;
+ }
+
+ /* PM */
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Clear */
+
+ sun6i_csi_bridge_irq_clear(csi_dev);
+
+ /* Configure */
+
+ sun6i_csi_bridge_configure(csi_dev, source);
+
+ if (capture_streaming)
+ sun6i_csi_capture_configure(csi_dev);
+
+ /* State Update */
+
+ if (capture_streaming)
+ sun6i_csi_capture_state_update(csi_dev);
+
+ /* Enable */
+
+ if (capture_streaming)
+ sun6i_csi_bridge_irq_enable(csi_dev);
+
+ sun6i_csi_bridge_enable(csi_dev);
+
+ ret = v4l2_subdev_call(source_subdev, video, s_stream, 1);
+ if (ret && ret != -ENOIOCTLCMD)
+ goto disable;
+
+ return 0;
+
+disable:
+ if (capture_streaming)
+ sun6i_csi_bridge_irq_disable(csi_dev);
+
+ sun6i_csi_bridge_disable(csi_dev);
+
+ pm_runtime_put(dev);
+
+ return ret;
+}
+
+static const struct v4l2_subdev_video_ops sun6i_csi_bridge_video_ops = {
+ .s_stream = sun6i_csi_bridge_s_stream,
+};
+
+static void
+sun6i_csi_bridge_mbus_format_prepare(struct v4l2_mbus_framefmt *mbus_format)
+{
+ if (!sun6i_csi_bridge_format_find(mbus_format->code))
+ mbus_format->code = sun6i_csi_bridge_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_csi_bridge_init_cfg(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *state)
+{
+ struct sun6i_csi_device *csi_dev = v4l2_get_subdevdata(subdev);
+ unsigned int pad = SUN6I_CSI_BRIDGE_PAD_SINK;
+ struct v4l2_mbus_framefmt *mbus_format =
+ v4l2_subdev_get_try_format(subdev, state, pad);
+ struct mutex *lock = &csi_dev->bridge.lock;
+
+ mutex_lock(lock);
+
+ mbus_format->code = sun6i_csi_bridge_formats[0].mbus_code;
+ mbus_format->width = 1280;
+ mbus_format->height = 720;
+
+ sun6i_csi_bridge_mbus_format_prepare(mbus_format);
+
+ mutex_unlock(lock);
+
+ return 0;
+}
+
+static int
+sun6i_csi_bridge_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_csi_bridge_formats))
+ return -EINVAL;
+
+ code_enum->code = sun6i_csi_bridge_formats[code_enum->index].mbus_code;
+
+ return 0;
+}
+
+static int sun6i_csi_bridge_get_fmt(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_format *format)
+{
+ struct sun6i_csi_device *csi_dev = v4l2_get_subdevdata(subdev);
+ struct v4l2_mbus_framefmt *mbus_format = &format->format;
+ struct mutex *lock = &csi_dev->bridge.lock;
+
+ mutex_lock(lock);
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+ *mbus_format = *v4l2_subdev_get_try_format(subdev, state,
+ format->pad);
+ else
+ *mbus_format = csi_dev->bridge.mbus_format;
+
+ mutex_unlock(lock);
+
+ return 0;
+}
+
+static int sun6i_csi_bridge_set_fmt(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_format *format)
+{
+ struct sun6i_csi_device *csi_dev = v4l2_get_subdevdata(subdev);
+ struct v4l2_mbus_framefmt *mbus_format = &format->format;
+ struct mutex *lock = &csi_dev->bridge.lock;
+
+ mutex_lock(lock);
+
+ sun6i_csi_bridge_mbus_format_prepare(mbus_format);
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+ *v4l2_subdev_get_try_format(subdev, state, format->pad) =
+ *mbus_format;
+ else
+ csi_dev->bridge.mbus_format = *mbus_format;
+
+ mutex_unlock(lock);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_pad_ops sun6i_csi_bridge_pad_ops = {
+ .init_cfg = sun6i_csi_bridge_init_cfg,
+ .enum_mbus_code = sun6i_csi_bridge_enum_mbus_code,
+ .get_fmt = sun6i_csi_bridge_get_fmt,
+ .set_fmt = sun6i_csi_bridge_set_fmt,
+};
+
+static const struct v4l2_subdev_ops sun6i_csi_bridge_subdev_ops = {
+ .video = &sun6i_csi_bridge_video_ops,
+ .pad = &sun6i_csi_bridge_pad_ops,
+};
+
+/* Media Entity */
+
+static const struct media_entity_operations sun6i_csi_bridge_entity_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+/* V4L2 Async */
+
+static int sun6i_csi_bridge_link(struct sun6i_csi_device *csi_dev,
+ int sink_pad_index,
+ struct v4l2_subdev *remote_subdev,
+ bool enabled)
+{
+ struct device *dev = csi_dev->dev;
+ struct v4l2_subdev *subdev = &csi_dev->bridge.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_csi_bridge_notifier_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *remote_subdev,
+ struct v4l2_async_connection *async_subdev)
+{
+ struct sun6i_csi_device *csi_dev =
+ container_of(notifier, struct sun6i_csi_device,
+ bridge.notifier);
+ struct sun6i_csi_bridge_async_subdev *bridge_async_subdev =
+ container_of(async_subdev, struct sun6i_csi_bridge_async_subdev,
+ async_subdev);
+ struct sun6i_csi_bridge *bridge = &csi_dev->bridge;
+ struct sun6i_csi_bridge_source *source = bridge_async_subdev->source;
+ bool enabled = false;
+ int ret;
+
+ switch (source->endpoint.base.port) {
+ case SUN6I_CSI_PORT_PARALLEL:
+ enabled = true;
+ break;
+ case SUN6I_CSI_PORT_MIPI_CSI2:
+ enabled = !bridge->source_parallel.expected;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ source->subdev = remote_subdev;
+
+ if (csi_dev->isp_available) {
+ /*
+ * Hook to the first available remote subdev to get v4l2 and
+ * media devices and register the capture device then.
+ */
+ ret = sun6i_csi_isp_complete(csi_dev, remote_subdev->v4l2_dev);
+ if (ret)
+ return ret;
+ }
+
+ return sun6i_csi_bridge_link(csi_dev, SUN6I_CSI_BRIDGE_PAD_SINK,
+ remote_subdev, enabled);
+}
+
+static int
+sun6i_csi_bridge_notifier_complete(struct v4l2_async_notifier *notifier)
+{
+ struct sun6i_csi_device *csi_dev =
+ container_of(notifier, struct sun6i_csi_device,
+ bridge.notifier);
+ struct v4l2_device *v4l2_dev = &csi_dev->v4l2.v4l2_dev;
+
+ if (csi_dev->isp_available)
+ return 0;
+
+ return v4l2_device_register_subdev_nodes(v4l2_dev);
+}
+
+static const struct v4l2_async_notifier_operations
+sun6i_csi_bridge_notifier_ops = {
+ .bound = sun6i_csi_bridge_notifier_bound,
+ .complete = sun6i_csi_bridge_notifier_complete,
+};
+
+/* Bridge */
+
+static int sun6i_csi_bridge_source_setup(struct sun6i_csi_device *csi_dev,
+ struct sun6i_csi_bridge_source *source,
+ u32 port,
+ enum v4l2_mbus_type *bus_types)
+{
+ struct device *dev = csi_dev->dev;
+ struct v4l2_async_notifier *notifier = &csi_dev->bridge.notifier;
+ struct v4l2_fwnode_endpoint *endpoint = &source->endpoint;
+ struct sun6i_csi_bridge_async_subdev *bridge_async_subdev;
+ struct fwnode_handle *handle;
+ 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;
+
+ if (bus_types) {
+ bool valid = false;
+ unsigned int i;
+
+ for (i = 0; bus_types[i] != V4L2_MBUS_INVALID; i++) {
+ if (endpoint->bus_type == bus_types[i]) {
+ valid = true;
+ break;
+ }
+ }
+
+ if (!valid) {
+ dev_err(dev, "unsupported bus type for port %d\n",
+ port);
+ ret = -EINVAL;
+ goto complete;
+ }
+ }
+
+ bridge_async_subdev =
+ v4l2_async_nf_add_fwnode_remote(notifier, handle,
+ struct
+ sun6i_csi_bridge_async_subdev);
+ if (IS_ERR(bridge_async_subdev)) {
+ ret = PTR_ERR(bridge_async_subdev);
+ goto complete;
+ }
+
+ bridge_async_subdev->source = source;
+
+ source->expected = true;
+
+complete:
+ fwnode_handle_put(handle);
+
+ return ret;
+}
+
+int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev)
+{
+ struct device *dev = csi_dev->dev;
+ struct sun6i_csi_bridge *bridge = &csi_dev->bridge;
+ struct v4l2_device *v4l2_dev = csi_dev->v4l2_dev;
+ struct v4l2_subdev *subdev = &bridge->subdev;
+ struct v4l2_async_notifier *notifier = &bridge->notifier;
+ struct media_pad *pads = bridge->pads;
+ enum v4l2_mbus_type parallel_mbus_types[] = {
+ V4L2_MBUS_PARALLEL,
+ V4L2_MBUS_BT656,
+ V4L2_MBUS_INVALID
+ };
+ int ret;
+
+ mutex_init(&bridge->lock);
+
+ /* V4L2 Subdev */
+
+ v4l2_subdev_init(subdev, &sun6i_csi_bridge_subdev_ops);
+ strscpy(subdev->name, SUN6I_CSI_BRIDGE_NAME, sizeof(subdev->name));
+ subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ subdev->owner = THIS_MODULE;
+ subdev->dev = dev;
+
+ v4l2_set_subdevdata(subdev, csi_dev);
+
+ /* Media Entity */
+
+ subdev->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
+ subdev->entity.ops = &sun6i_csi_bridge_entity_ops;
+
+ /* Media Pads */
+
+ pads[SUN6I_CSI_BRIDGE_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[SUN6I_CSI_BRIDGE_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE |
+ MEDIA_PAD_FL_MUST_CONNECT;
+
+ ret = media_entity_pads_init(&subdev->entity,
+ SUN6I_CSI_BRIDGE_PAD_COUNT, pads);
+ if (ret < 0)
+ return ret;
+
+ /* V4L2 Subdev */
+
+ if (csi_dev->isp_available)
+ ret = v4l2_async_register_subdev(subdev);
+ else
+ ret = v4l2_device_register_subdev(v4l2_dev, subdev);
+
+ if (ret) {
+ dev_err(dev, "failed to register v4l2 subdev: %d\n", ret);
+ goto error_media_entity;
+ }
+
+ /* V4L2 Async */
+
+ if (csi_dev->isp_available)
+ v4l2_async_subdev_nf_init(notifier, subdev);
+ else
+ v4l2_async_nf_init(notifier, v4l2_dev);
+ notifier->ops = &sun6i_csi_bridge_notifier_ops;
+
+ sun6i_csi_bridge_source_setup(csi_dev, &bridge->source_parallel,
+ SUN6I_CSI_PORT_PARALLEL,
+ parallel_mbus_types);
+ sun6i_csi_bridge_source_setup(csi_dev, &bridge->source_mipi_csi2,
+ SUN6I_CSI_PORT_MIPI_CSI2, NULL);
+
+ ret = v4l2_async_nf_register(notifier);
+ if (ret) {
+ dev_err(dev, "failed to register v4l2 async notifier: %d\n",
+ ret);
+ goto error_v4l2_async_notifier;
+ }
+
+ return 0;
+
+error_v4l2_async_notifier:
+ v4l2_async_nf_cleanup(notifier);
+
+ if (csi_dev->isp_available)
+ v4l2_async_unregister_subdev(subdev);
+ else
+ v4l2_device_unregister_subdev(subdev);
+
+error_media_entity:
+ media_entity_cleanup(&subdev->entity);
+
+ return ret;
+}
+
+void sun6i_csi_bridge_cleanup(struct sun6i_csi_device *csi_dev)
+{
+ struct v4l2_subdev *subdev = &csi_dev->bridge.subdev;
+ struct v4l2_async_notifier *notifier = &csi_dev->bridge.notifier;
+
+ v4l2_async_nf_unregister(notifier);
+ v4l2_async_nf_cleanup(notifier);
+
+ v4l2_device_unregister_subdev(subdev);
+
+ media_entity_cleanup(&subdev->entity);
+}
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h
new file mode 100644
index 0000000000..44653b38f7
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_CSI_BRIDGE_H_
+#define _SUN6I_CSI_BRIDGE_H_
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+
+#define SUN6I_CSI_BRIDGE_NAME "sun6i-csi-bridge"
+
+enum sun6i_csi_bridge_pad {
+ SUN6I_CSI_BRIDGE_PAD_SINK = 0,
+ SUN6I_CSI_BRIDGE_PAD_SOURCE = 1,
+ SUN6I_CSI_BRIDGE_PAD_COUNT = 2,
+};
+
+struct sun6i_csi_device;
+
+struct sun6i_csi_bridge_format {
+ u32 mbus_code;
+ u8 input_format;
+ u8 input_yuv_seq;
+ u8 input_yuv_seq_invert;
+};
+
+struct sun6i_csi_bridge_source {
+ struct v4l2_subdev *subdev;
+ struct v4l2_fwnode_endpoint endpoint;
+ bool expected;
+};
+
+struct sun6i_csi_bridge_async_subdev {
+ struct v4l2_async_connection async_subdev;
+ struct sun6i_csi_bridge_source *source;
+};
+
+struct sun6i_csi_bridge {
+ struct v4l2_subdev subdev;
+ struct v4l2_async_notifier notifier;
+ struct media_pad pads[2];
+ struct v4l2_mbus_framefmt mbus_format;
+ struct mutex lock; /* Mbus format lock. */
+
+ struct sun6i_csi_bridge_source source_parallel;
+ struct sun6i_csi_bridge_source source_mipi_csi2;
+};
+
+/* Helpers */
+
+void sun6i_csi_bridge_dimensions(struct sun6i_csi_device *csi_dev,
+ unsigned int *width, unsigned int *height);
+void sun6i_csi_bridge_format(struct sun6i_csi_device *csi_dev,
+ u32 *mbus_code, u32 *field);
+
+/* Format */
+
+const struct sun6i_csi_bridge_format *
+sun6i_csi_bridge_format_find(u32 mbus_code);
+
+/* Bridge */
+
+int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev);
+void sun6i_csi_bridge_cleanup(struct sun6i_csi_device *csi_dev);
+
+#endif
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
new file mode 100644
index 0000000000..cf6aadbc13
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
@@ -0,0 +1,1102 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
+ * Author: Yong Deng <yong.deng@magewell.com>
+ * Copyright 2021-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <linux/of.h>
+#include <linux/regmap.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_csi.h"
+#include "sun6i_csi_bridge.h"
+#include "sun6i_csi_capture.h"
+#include "sun6i_csi_reg.h"
+
+/* Helpers */
+
+void sun6i_csi_capture_dimensions(struct sun6i_csi_device *csi_dev,
+ unsigned int *width, unsigned int *height)
+{
+ if (width)
+ *width = csi_dev->capture.format.fmt.pix.width;
+ if (height)
+ *height = csi_dev->capture.format.fmt.pix.height;
+}
+
+void sun6i_csi_capture_format(struct sun6i_csi_device *csi_dev,
+ u32 *pixelformat, u32 *field)
+{
+ if (pixelformat)
+ *pixelformat = csi_dev->capture.format.fmt.pix.pixelformat;
+
+ if (field)
+ *field = csi_dev->capture.format.fmt.pix.field;
+}
+
+/* Format */
+
+static const struct sun6i_csi_capture_format sun6i_csi_capture_formats[] = {
+ /* Bayer */
+ {
+ .pixelformat = V4L2_PIX_FMT_SBGGR8,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGBRG8,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGRBG8,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SRGGB8,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SBGGR10,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGBRG10,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGRBG10,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SRGGB10,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SBGGR12,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGBRG12,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGRBG12,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SRGGB12,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12,
+ },
+ /* RGB */
+ {
+ .pixelformat = V4L2_PIX_FMT_RGB565,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RGB565,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RGB565,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_RGB565X,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RGB565,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RGB565,
+ },
+ /* YUV422 */
+ {
+ .pixelformat = V4L2_PIX_FMT_YUYV,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ .input_format_raw = true,
+ .hsize_len_factor = 2,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_YVYU,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ .input_format_raw = true,
+ .hsize_len_factor = 2,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_UYVY,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ .input_format_raw = true,
+ .hsize_len_factor = 2,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_VYUY,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ .input_format_raw = true,
+ .hsize_len_factor = 2,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_NV16,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422SP,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422SP,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_NV61,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422SP,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422SP,
+ .input_yuv_seq_invert = true,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_YUV422P,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422P,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422P,
+ },
+ /* YUV420 */
+ {
+ .pixelformat = V4L2_PIX_FMT_NV12_16L16,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420MB,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420MB,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_NV12,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420SP,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420SP,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_NV21,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420SP,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420SP,
+ .input_yuv_seq_invert = true,
+ },
+
+ {
+ .pixelformat = V4L2_PIX_FMT_YUV420,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420P,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420P,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_YVU420,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420P,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420P,
+ .input_yuv_seq_invert = true,
+ },
+ /* Compressed */
+ {
+ .pixelformat = V4L2_PIX_FMT_JPEG,
+ .output_format_frame = SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8,
+ .output_format_field = SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8,
+ },
+};
+
+const
+struct sun6i_csi_capture_format *sun6i_csi_capture_format_find(u32 pixelformat)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(sun6i_csi_capture_formats); i++)
+ if (sun6i_csi_capture_formats[i].pixelformat == pixelformat)
+ return &sun6i_csi_capture_formats[i];
+
+ return NULL;
+}
+
+/* RAW formats need an exact match between pixel and mbus formats. */
+static const
+struct sun6i_csi_capture_format_match sun6i_csi_capture_format_matches[] = {
+ /* YUV420 */
+ {
+ .pixelformat = V4L2_PIX_FMT_YUYV,
+ .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_YUYV,
+ .mbus_code = MEDIA_BUS_FMT_YUYV8_1X16,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_YVYU,
+ .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_YVYU,
+ .mbus_code = MEDIA_BUS_FMT_YVYU8_1X16,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_UYVY,
+ .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_UYVY,
+ .mbus_code = MEDIA_BUS_FMT_UYVY8_1X16,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_VYUY,
+ .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_VYUY,
+ .mbus_code = MEDIA_BUS_FMT_VYUY8_1X16,
+ },
+ /* RGB */
+ {
+ .pixelformat = V4L2_PIX_FMT_RGB565,
+ .mbus_code = MEDIA_BUS_FMT_RGB565_2X8_LE,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_RGB565X,
+ .mbus_code = MEDIA_BUS_FMT_RGB565_2X8_BE,
+ },
+ /* Bayer */
+ {
+ .pixelformat = V4L2_PIX_FMT_SBGGR8,
+ .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGBRG8,
+ .mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGRBG8,
+ .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SRGGB8,
+ .mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SBGGR10,
+ .mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGBRG10,
+ .mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGRBG10,
+ .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SRGGB10,
+ .mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SBGGR12,
+ .mbus_code = MEDIA_BUS_FMT_SBGGR12_1X12,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGBRG12,
+ .mbus_code = MEDIA_BUS_FMT_SGBRG12_1X12,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SGRBG12,
+ .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
+ },
+ {
+ .pixelformat = V4L2_PIX_FMT_SRGGB12,
+ .mbus_code = MEDIA_BUS_FMT_SRGGB12_1X12,
+ },
+ /* Compressed */
+ {
+ .pixelformat = V4L2_PIX_FMT_JPEG,
+ .mbus_code = MEDIA_BUS_FMT_JPEG_1X8,
+ },
+};
+
+static bool sun6i_csi_capture_format_match(u32 pixelformat, u32 mbus_code)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(sun6i_csi_capture_format_matches); i++) {
+ const struct sun6i_csi_capture_format_match *match =
+ &sun6i_csi_capture_format_matches[i];
+
+ if (match->pixelformat == pixelformat &&
+ match->mbus_code == mbus_code)
+ return true;
+ }
+
+ return false;
+}
+
+/* Capture */
+
+static void
+sun6i_csi_capture_buffer_configure(struct sun6i_csi_device *csi_dev,
+ struct sun6i_csi_buffer *csi_buffer)
+{
+ struct regmap *regmap = csi_dev->regmap;
+ const struct v4l2_format_info *info;
+ struct vb2_buffer *vb2_buffer;
+ unsigned int width, height;
+ dma_addr_t address;
+ u32 pixelformat;
+
+ vb2_buffer = &csi_buffer->v4l2_buffer.vb2_buf;
+ address = vb2_dma_contig_plane_dma_addr(vb2_buffer, 0);
+
+ regmap_write(regmap, SUN6I_CSI_CH_FIFO0_ADDR_REG,
+ SUN6I_CSI_ADDR_VALUE(address));
+
+ sun6i_csi_capture_dimensions(csi_dev, &width, &height);
+ sun6i_csi_capture_format(csi_dev, &pixelformat, NULL);
+
+ info = v4l2_format_info(pixelformat);
+ /* Unsupported formats are single-plane, so we can stop here. */
+ if (!info)
+ return;
+
+ if (info->comp_planes > 1) {
+ address += info->bpp[0] * width * height;
+
+ regmap_write(regmap, SUN6I_CSI_CH_FIFO1_ADDR_REG,
+ SUN6I_CSI_ADDR_VALUE(address));
+ }
+
+ if (info->comp_planes > 2) {
+ address += info->bpp[1] * DIV_ROUND_UP(width, info->hdiv) *
+ DIV_ROUND_UP(height, info->vdiv);
+
+ regmap_write(regmap, SUN6I_CSI_CH_FIFO2_ADDR_REG,
+ SUN6I_CSI_ADDR_VALUE(address));
+ }
+}
+
+void sun6i_csi_capture_configure(struct sun6i_csi_device *csi_dev)
+{
+ struct regmap *regmap = csi_dev->regmap;
+ const struct sun6i_csi_capture_format *format;
+ const struct v4l2_format_info *info;
+ u32 hsize_len, vsize_len;
+ u32 luma_line, chroma_line = 0;
+ u32 pixelformat, field;
+ u32 width, height;
+
+ sun6i_csi_capture_dimensions(csi_dev, &width, &height);
+ sun6i_csi_capture_format(csi_dev, &pixelformat, &field);
+
+ format = sun6i_csi_capture_format_find(pixelformat);
+ if (WARN_ON(!format))
+ return;
+
+ hsize_len = width;
+ vsize_len = height;
+
+ /*
+ * When using 8-bit raw input/output (for packed YUV), we need to adapt
+ * the width to account for the difference in bpp when it's not 8-bit.
+ */
+ if (format->hsize_len_factor)
+ hsize_len *= format->hsize_len_factor;
+
+ regmap_write(regmap, SUN6I_CSI_CH_HSIZE_REG,
+ SUN6I_CSI_CH_HSIZE_LEN(hsize_len) |
+ SUN6I_CSI_CH_HSIZE_START(0));
+
+ regmap_write(regmap, SUN6I_CSI_CH_VSIZE_REG,
+ SUN6I_CSI_CH_VSIZE_LEN(vsize_len) |
+ SUN6I_CSI_CH_VSIZE_START(0));
+
+ switch (pixelformat) {
+ case V4L2_PIX_FMT_RGB565X:
+ luma_line = width * 2;
+ break;
+ case V4L2_PIX_FMT_NV12_16L16:
+ luma_line = width;
+ chroma_line = width;
+ break;
+ case V4L2_PIX_FMT_JPEG:
+ luma_line = width;
+ break;
+ default:
+ info = v4l2_format_info(pixelformat);
+ if (WARN_ON(!info))
+ return;
+
+ luma_line = width * info->bpp[0];
+
+ if (info->comp_planes > 1)
+ chroma_line = width * info->bpp[1] / info->hdiv;
+ break;
+ }
+
+ regmap_write(regmap, SUN6I_CSI_CH_BUF_LEN_REG,
+ SUN6I_CSI_CH_BUF_LEN_CHROMA_LINE(chroma_line) |
+ SUN6I_CSI_CH_BUF_LEN_LUMA_LINE(luma_line));
+}
+
+/* State */
+
+static void sun6i_csi_capture_state_cleanup(struct sun6i_csi_device *csi_dev,
+ bool error)
+{
+ struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+ struct sun6i_csi_buffer **csi_buffer_states[] = {
+ &state->pending, &state->current, &state->complete,
+ };
+ struct sun6i_csi_buffer *csi_buffer;
+ struct vb2_buffer *vb2_buffer;
+ unsigned long flags;
+ unsigned int i;
+
+ spin_lock_irqsave(&state->lock, flags);
+
+ for (i = 0; i < ARRAY_SIZE(csi_buffer_states); i++) {
+ csi_buffer = *csi_buffer_states[i];
+ if (!csi_buffer)
+ continue;
+
+ vb2_buffer = &csi_buffer->v4l2_buffer.vb2_buf;
+ vb2_buffer_done(vb2_buffer, error ? VB2_BUF_STATE_ERROR :
+ VB2_BUF_STATE_QUEUED);
+
+ *csi_buffer_states[i] = NULL;
+ }
+
+ list_for_each_entry(csi_buffer, &state->queue, list) {
+ vb2_buffer = &csi_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_csi_capture_state_update(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+ struct sun6i_csi_buffer *csi_buffer;
+ unsigned long flags;
+
+ spin_lock_irqsave(&state->lock, flags);
+
+ if (list_empty(&state->queue))
+ goto complete;
+
+ if (state->pending)
+ goto complete;
+
+ csi_buffer = list_first_entry(&state->queue, struct sun6i_csi_buffer,
+ list);
+
+ sun6i_csi_capture_buffer_configure(csi_dev, csi_buffer);
+
+ list_del(&csi_buffer->list);
+
+ state->pending = csi_buffer;
+
+complete:
+ spin_unlock_irqrestore(&state->lock, flags);
+}
+
+static void sun6i_csi_capture_state_complete(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_csi_capture_state *state = &csi_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_csi_buffer *csi_buffer = state->complete;
+ struct vb2_buffer *vb2_buffer =
+ &csi_buffer->v4l2_buffer.vb2_buf;
+
+ vb2_buffer->timestamp = ktime_get_ns();
+ csi_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_csi_capture_frame_done(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+ unsigned long flags;
+
+ spin_lock_irqsave(&state->lock, flags);
+ state->sequence++;
+ spin_unlock_irqrestore(&state->lock, flags);
+}
+
+void sun6i_csi_capture_sync(struct sun6i_csi_device *csi_dev)
+{
+ sun6i_csi_capture_state_complete(csi_dev);
+ sun6i_csi_capture_state_update(csi_dev);
+}
+
+/* Queue */
+
+static int sun6i_csi_capture_queue_setup(struct vb2_queue *queue,
+ unsigned int *buffers_count,
+ unsigned int *planes_count,
+ unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(queue);
+ unsigned int size = csi_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_csi_capture_buffer_prepare(struct vb2_buffer *buffer)
+{
+ struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(buffer->vb2_queue);
+ struct sun6i_csi_capture *capture = &csi_dev->capture;
+ struct v4l2_device *v4l2_dev = csi_dev->v4l2_dev;
+ struct vb2_v4l2_buffer *v4l2_buffer = to_vb2_v4l2_buffer(buffer);
+ unsigned long size = capture->format.fmt.pix.sizeimage;
+
+ if (vb2_plane_size(buffer, 0) < size) {
+ v4l2_err(v4l2_dev, "buffer too small (%lu < %lu)\n",
+ vb2_plane_size(buffer, 0), size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(buffer, 0, size);
+
+ v4l2_buffer->field = capture->format.fmt.pix.field;
+
+ return 0;
+}
+
+static void sun6i_csi_capture_buffer_queue(struct vb2_buffer *buffer)
+{
+ struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(buffer->vb2_queue);
+ struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+ struct vb2_v4l2_buffer *v4l2_buffer = to_vb2_v4l2_buffer(buffer);
+ struct sun6i_csi_buffer *csi_buffer =
+ container_of(v4l2_buffer, struct sun6i_csi_buffer, v4l2_buffer);
+ unsigned long flags;
+
+ spin_lock_irqsave(&state->lock, flags);
+ list_add_tail(&csi_buffer->list, &state->queue);
+ spin_unlock_irqrestore(&state->lock, flags);
+}
+
+static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue,
+ unsigned int count)
+{
+ struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(queue);
+ struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+ struct video_device *video_dev = &csi_dev->capture.video_dev;
+ struct v4l2_subdev *subdev = &csi_dev->bridge.subdev;
+ int ret;
+
+ state->sequence = 0;
+
+ ret = video_device_pipeline_alloc_start(video_dev);
+ if (ret < 0)
+ goto error_state;
+
+ 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;
+
+ video_device_pipeline_stop(video_dev);
+
+error_state:
+ sun6i_csi_capture_state_cleanup(csi_dev, false);
+
+ return ret;
+}
+
+static void sun6i_csi_capture_stop_streaming(struct vb2_queue *queue)
+{
+ struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(queue);
+ struct sun6i_csi_capture_state *state = &csi_dev->capture.state;
+ struct video_device *video_dev = &csi_dev->capture.video_dev;
+ struct v4l2_subdev *subdev = &csi_dev->bridge.subdev;
+
+ v4l2_subdev_call(subdev, video, s_stream, 0);
+
+ state->streaming = false;
+
+ video_device_pipeline_stop(video_dev);
+
+ sun6i_csi_capture_state_cleanup(csi_dev, true);
+}
+
+static const struct vb2_ops sun6i_csi_capture_queue_ops = {
+ .queue_setup = sun6i_csi_capture_queue_setup,
+ .buf_prepare = sun6i_csi_capture_buffer_prepare,
+ .buf_queue = sun6i_csi_capture_buffer_queue,
+ .start_streaming = sun6i_csi_capture_start_streaming,
+ .stop_streaming = sun6i_csi_capture_stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+/* V4L2 Device */
+
+static void sun6i_csi_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;
+
+ v4l_bound_align_image(&pix_format->width, SUN6I_CSI_CAPTURE_WIDTH_MIN,
+ SUN6I_CSI_CAPTURE_WIDTH_MAX, 1,
+ &pix_format->height, SUN6I_CSI_CAPTURE_HEIGHT_MIN,
+ SUN6I_CSI_CAPTURE_HEIGHT_MAX, 1, 0);
+
+ if (!sun6i_csi_capture_format_find(pix_format->pixelformat))
+ pix_format->pixelformat =
+ sun6i_csi_capture_formats[0].pixelformat;
+
+ width = pix_format->width;
+ height = pix_format->height;
+
+ info = v4l2_format_info(pix_format->pixelformat);
+
+ switch (pix_format->pixelformat) {
+ case V4L2_PIX_FMT_NV12_16L16:
+ pix_format->bytesperline = width * 12 / 8;
+ pix_format->sizeimage = pix_format->bytesperline * height;
+ break;
+ case V4L2_PIX_FMT_JPEG:
+ pix_format->bytesperline = width;
+ pix_format->sizeimage = pix_format->bytesperline * height;
+ break;
+ default:
+ v4l2_fill_pixfmt(pix_format, pix_format->pixelformat,
+ width, height);
+ break;
+ }
+
+ if (pix_format->field == V4L2_FIELD_ANY)
+ pix_format->field = V4L2_FIELD_NONE;
+
+ if (pix_format->pixelformat == V4L2_PIX_FMT_JPEG)
+ pix_format->colorspace = V4L2_COLORSPACE_JPEG;
+ else if (info && info->pixel_enc == V4L2_PIXEL_ENC_BAYER)
+ pix_format->colorspace = V4L2_COLORSPACE_RAW;
+ else
+ pix_format->colorspace = V4L2_COLORSPACE_SRGB;
+
+ 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_csi_capture_querycap(struct file *file, void *private,
+ struct v4l2_capability *capability)
+{
+ struct sun6i_csi_device *csi_dev = video_drvdata(file);
+ struct video_device *video_dev = &csi_dev->capture.video_dev;
+
+ strscpy(capability->driver, SUN6I_CSI_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(csi_dev->dev));
+
+ return 0;
+}
+
+static int sun6i_csi_capture_enum_fmt(struct file *file, void *private,
+ struct v4l2_fmtdesc *fmtdesc)
+{
+ u32 index = fmtdesc->index;
+
+ if (index >= ARRAY_SIZE(sun6i_csi_capture_formats))
+ return -EINVAL;
+
+ fmtdesc->pixelformat = sun6i_csi_capture_formats[index].pixelformat;
+
+ return 0;
+}
+
+static int sun6i_csi_capture_g_fmt(struct file *file, void *private,
+ struct v4l2_format *format)
+{
+ struct sun6i_csi_device *csi_dev = video_drvdata(file);
+
+ *format = csi_dev->capture.format;
+
+ return 0;
+}
+
+static int sun6i_csi_capture_s_fmt(struct file *file, void *private,
+ struct v4l2_format *format)
+{
+ struct sun6i_csi_device *csi_dev = video_drvdata(file);
+ struct sun6i_csi_capture *capture = &csi_dev->capture;
+
+ if (vb2_is_busy(&capture->queue))
+ return -EBUSY;
+
+ sun6i_csi_capture_format_prepare(format);
+
+ csi_dev->capture.format = *format;
+
+ return 0;
+}
+
+static int sun6i_csi_capture_try_fmt(struct file *file, void *private,
+ struct v4l2_format *format)
+{
+ sun6i_csi_capture_format_prepare(format);
+
+ return 0;
+}
+
+static int sun6i_csi_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_csi_capture_g_input(struct file *file, void *private,
+ unsigned int *index)
+{
+ *index = 0;
+
+ return 0;
+}
+
+static int sun6i_csi_capture_s_input(struct file *file, void *private,
+ unsigned int index)
+{
+ if (index != 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+static const struct v4l2_ioctl_ops sun6i_csi_capture_ioctl_ops = {
+ .vidioc_querycap = sun6i_csi_capture_querycap,
+
+ .vidioc_enum_fmt_vid_cap = sun6i_csi_capture_enum_fmt,
+ .vidioc_g_fmt_vid_cap = sun6i_csi_capture_g_fmt,
+ .vidioc_s_fmt_vid_cap = sun6i_csi_capture_s_fmt,
+ .vidioc_try_fmt_vid_cap = sun6i_csi_capture_try_fmt,
+
+ .vidioc_enum_input = sun6i_csi_capture_enum_input,
+ .vidioc_g_input = sun6i_csi_capture_g_input,
+ .vidioc_s_input = sun6i_csi_capture_s_input,
+
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+};
+
+/* V4L2 File */
+
+static int sun6i_csi_capture_open(struct file *file)
+{
+ struct sun6i_csi_device *csi_dev = video_drvdata(file);
+ struct sun6i_csi_capture *capture = &csi_dev->capture;
+ int ret;
+
+ if (mutex_lock_interruptible(&capture->lock))
+ return -ERESTARTSYS;
+
+ ret = v4l2_pipeline_pm_get(&capture->video_dev.entity);
+ if (ret < 0)
+ goto error_lock;
+
+ ret = v4l2_fh_open(file);
+ if (ret < 0)
+ goto error_pipeline;
+
+ mutex_unlock(&capture->lock);
+
+ return 0;
+
+error_pipeline:
+ v4l2_pipeline_pm_put(&capture->video_dev.entity);
+
+error_lock:
+ mutex_unlock(&capture->lock);
+
+ return ret;
+}
+
+static int sun6i_csi_capture_close(struct file *file)
+{
+ struct sun6i_csi_device *csi_dev = video_drvdata(file);
+ struct sun6i_csi_capture *capture = &csi_dev->capture;
+
+ mutex_lock(&capture->lock);
+
+ _vb2_fop_release(file, NULL);
+ v4l2_pipeline_pm_put(&capture->video_dev.entity);
+
+ mutex_unlock(&capture->lock);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations sun6i_csi_capture_fops = {
+ .owner = THIS_MODULE,
+ .open = sun6i_csi_capture_open,
+ .release = sun6i_csi_capture_close,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vb2_fop_mmap,
+ .poll = vb2_fop_poll
+};
+
+/* Media Entity */
+
+static int sun6i_csi_capture_link_validate(struct media_link *link)
+{
+ struct video_device *video_dev =
+ media_entity_to_video_device(link->sink->entity);
+ struct sun6i_csi_device *csi_dev = video_get_drvdata(video_dev);
+ struct v4l2_device *v4l2_dev = csi_dev->v4l2_dev;
+ const struct sun6i_csi_capture_format *capture_format;
+ const struct sun6i_csi_bridge_format *bridge_format;
+ unsigned int capture_width, capture_height;
+ unsigned int bridge_width, bridge_height;
+ const struct v4l2_format_info *format_info;
+ u32 pixelformat, capture_field;
+ u32 mbus_code, bridge_field;
+ bool match;
+
+ sun6i_csi_capture_dimensions(csi_dev, &capture_width, &capture_height);
+
+ sun6i_csi_capture_format(csi_dev, &pixelformat, &capture_field);
+ capture_format = sun6i_csi_capture_format_find(pixelformat);
+ if (WARN_ON(!capture_format))
+ return -EINVAL;
+
+ sun6i_csi_bridge_dimensions(csi_dev, &bridge_width, &bridge_height);
+
+ sun6i_csi_bridge_format(csi_dev, &mbus_code, &bridge_field);
+ bridge_format = sun6i_csi_bridge_format_find(mbus_code);
+ if (WARN_ON(!bridge_format))
+ return -EINVAL;
+
+ /* No cropping/scaling is supported. */
+ if (capture_width != bridge_width || capture_height != bridge_height) {
+ v4l2_err(v4l2_dev,
+ "invalid input/output dimensions: %ux%u/%ux%u\n",
+ bridge_width, bridge_height, capture_width,
+ capture_height);
+ return -EINVAL;
+ }
+
+ format_info = v4l2_format_info(pixelformat);
+ /* Some formats are not listed. */
+ if (!format_info)
+ return 0;
+
+ if (format_info->pixel_enc == V4L2_PIXEL_ENC_BAYER &&
+ bridge_format->input_format != SUN6I_CSI_INPUT_FMT_RAW)
+ goto invalid;
+
+ if (format_info->pixel_enc == V4L2_PIXEL_ENC_RGB &&
+ bridge_format->input_format != SUN6I_CSI_INPUT_FMT_RAW)
+ goto invalid;
+
+ if (format_info->pixel_enc == V4L2_PIXEL_ENC_YUV) {
+ if (bridge_format->input_format != SUN6I_CSI_INPUT_FMT_YUV420 &&
+ bridge_format->input_format != SUN6I_CSI_INPUT_FMT_YUV422)
+ goto invalid;
+
+ /* YUV420 input can't produce YUV422 output. */
+ if (bridge_format->input_format == SUN6I_CSI_INPUT_FMT_YUV420 &&
+ format_info->vdiv == 1)
+ goto invalid;
+ }
+
+ /* With raw input mode, we need a 1:1 match between input and output. */
+ if (bridge_format->input_format == SUN6I_CSI_INPUT_FMT_RAW ||
+ capture_format->input_format_raw) {
+ match = sun6i_csi_capture_format_match(pixelformat, mbus_code);
+ if (!match)
+ goto invalid;
+ }
+
+ return 0;
+
+invalid:
+ v4l2_err(v4l2_dev, "invalid input/output format combination\n");
+ return -EINVAL;
+}
+
+static const struct media_entity_operations sun6i_csi_capture_media_ops = {
+ .link_validate = sun6i_csi_capture_link_validate
+};
+
+/* Capture */
+
+int sun6i_csi_capture_setup(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_csi_capture *capture = &csi_dev->capture;
+ struct sun6i_csi_capture_state *state = &capture->state;
+ struct v4l2_device *v4l2_dev = csi_dev->v4l2_dev;
+ struct v4l2_subdev *bridge_subdev = &csi_dev->bridge.subdev;
+ struct video_device *video_dev = &capture->video_dev;
+ struct vb2_queue *queue = &capture->queue;
+ struct media_pad *pad = &capture->pad;
+ struct v4l2_format *format = &csi_dev->capture.format;
+ struct v4l2_pix_format *pix_format = &format->fmt.pix;
+ int ret;
+
+ /* This may happen with multiple bridge notifier bound calls. */
+ if (state->setup)
+ return 0;
+
+ /* State */
+
+ INIT_LIST_HEAD(&state->queue);
+ spin_lock_init(&state->lock);
+
+ /* Media Entity */
+
+ video_dev->entity.ops = &sun6i_csi_capture_media_ops;
+
+ /* Media Pad */
+
+ pad->flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
+
+ ret = media_entity_pads_init(&video_dev->entity, 1, pad);
+ if (ret < 0)
+ return ret;
+
+ /* Queue */
+
+ mutex_init(&capture->lock);
+
+ queue->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ queue->io_modes = VB2_MMAP | VB2_DMABUF;
+ queue->buf_struct_size = sizeof(struct sun6i_csi_buffer);
+ queue->ops = &sun6i_csi_capture_queue_ops;
+ queue->mem_ops = &vb2_dma_contig_memops;
+ queue->min_buffers_needed = 2;
+ queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ queue->lock = &capture->lock;
+ queue->dev = csi_dev->dev;
+ queue->drv_priv = csi_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_csi_capture_formats[0].pixelformat;
+ pix_format->width = 1280;
+ pix_format->height = 720;
+ pix_format->field = V4L2_FIELD_NONE;
+
+ sun6i_csi_capture_format_prepare(format);
+
+ /* Video Device */
+
+ strscpy(video_dev->name, SUN6I_CSI_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->release = video_device_release_empty;
+ video_dev->fops = &sun6i_csi_capture_fops;
+ video_dev->ioctl_ops = &sun6i_csi_capture_ioctl_ops;
+ video_dev->v4l2_dev = v4l2_dev;
+ video_dev->queue = queue;
+ video_dev->lock = &capture->lock;
+
+ video_set_drvdata(video_dev, csi_dev);
+
+ ret = video_register_device(video_dev, VFL_TYPE_VIDEO, -1);
+ if (ret < 0) {
+ v4l2_err(v4l2_dev, "failed to register video device: %d\n",
+ ret);
+ goto error_media_entity;
+ }
+
+ /* Media Pad Link */
+
+ ret = media_create_pad_link(&bridge_subdev->entity,
+ SUN6I_CSI_BRIDGE_PAD_SOURCE,
+ &video_dev->entity, 0,
+ csi_dev->isp_available ? 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",
+ bridge_subdev->entity.name,
+ SUN6I_CSI_BRIDGE_PAD_SOURCE,
+ video_dev->entity.name, 0);
+ goto error_video_device;
+ }
+
+ state->setup = true;
+
+ return 0;
+
+error_video_device:
+ vb2_video_unregister_device(video_dev);
+
+error_media_entity:
+ media_entity_cleanup(&video_dev->entity);
+
+ mutex_destroy(&capture->lock);
+
+ return ret;
+}
+
+void sun6i_csi_capture_cleanup(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_csi_capture *capture = &csi_dev->capture;
+ struct video_device *video_dev = &capture->video_dev;
+
+ /* This may happen if async registration failed to complete. */
+ if (!capture->state.setup)
+ return;
+
+ vb2_video_unregister_device(video_dev);
+ media_entity_cleanup(&video_dev->entity);
+ mutex_destroy(&capture->lock);
+
+ capture->state.setup = false;
+}
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h
new file mode 100644
index 0000000000..3ee5ccefbd
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
+ * Author: Yong Deng <yong.deng@magewell.com>
+ * Copyright 2021-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_CAPTURE_H_
+#define _SUN6I_CAPTURE_H_
+
+#include <media/v4l2-device.h>
+
+#define SUN6I_CSI_CAPTURE_NAME "sun6i-csi-capture"
+
+#define SUN6I_CSI_CAPTURE_WIDTH_MIN 32
+#define SUN6I_CSI_CAPTURE_WIDTH_MAX 4800
+#define SUN6I_CSI_CAPTURE_HEIGHT_MIN 32
+#define SUN6I_CSI_CAPTURE_HEIGHT_MAX 4800
+
+struct sun6i_csi_device;
+
+struct sun6i_csi_capture_format {
+ u32 pixelformat;
+ u8 output_format_field;
+ u8 output_format_frame;
+ bool input_yuv_seq_invert;
+ bool input_format_raw;
+ u32 hsize_len_factor;
+};
+
+struct sun6i_csi_capture_format_match {
+ u32 pixelformat;
+ u32 mbus_code;
+};
+
+#undef current
+struct sun6i_csi_capture_state {
+ struct list_head queue;
+ spinlock_t lock; /* Queue and buffers lock. */
+
+ struct sun6i_csi_buffer *pending;
+ struct sun6i_csi_buffer *current;
+ struct sun6i_csi_buffer *complete;
+
+ unsigned int sequence;
+ bool streaming;
+ bool setup;
+};
+
+struct sun6i_csi_capture {
+ struct sun6i_csi_capture_state state;
+
+ struct video_device video_dev;
+ struct vb2_queue queue;
+ struct mutex lock; /* Queue lock. */
+ struct media_pad pad;
+
+ struct v4l2_format format;
+};
+
+/* Helpers */
+
+void sun6i_csi_capture_dimensions(struct sun6i_csi_device *csi_dev,
+ unsigned int *width, unsigned int *height);
+void sun6i_csi_capture_format(struct sun6i_csi_device *csi_dev,
+ u32 *pixelformat, u32 *field);
+
+/* Format */
+
+const
+struct sun6i_csi_capture_format *sun6i_csi_capture_format_find(u32 pixelformat);
+
+/* Capture */
+
+void sun6i_csi_capture_configure(struct sun6i_csi_device *csi_dev);
+void sun6i_csi_capture_state_update(struct sun6i_csi_device *csi_dev);
+
+/* State */
+
+void sun6i_csi_capture_sync(struct sun6i_csi_device *csi_dev);
+void sun6i_csi_capture_frame_done(struct sun6i_csi_device *csi_dev);
+
+/* Capture */
+
+int sun6i_csi_capture_setup(struct sun6i_csi_device *csi_dev);
+void sun6i_csi_capture_cleanup(struct sun6i_csi_device *csi_dev);
+
+#endif
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
new file mode 100644
index 0000000000..e01c5b9c2d
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
+ * Author: Yong Deng <yong.deng@magewell.com>
+ * Copyright 2021-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#ifndef _SUN6I_CSI_REG_H_
+#define _SUN6I_CSI_REG_H_
+
+#include <linux/kernel.h>
+
+#define SUN6I_CSI_ADDR_VALUE(a) ((a) >> 2)
+
+#define SUN6I_CSI_EN_REG 0x0
+#define SUN6I_CSI_EN_VER_EN BIT(30)
+#define SUN6I_CSI_EN_PTN_CYCLE(v) (((v) << 16) & GENMASK(23, 16))
+#define SUN6I_CSI_EN_SRAM_PWDN BIT(8)
+#define SUN6I_CSI_EN_PTN_START BIT(4)
+#define SUN6I_CSI_EN_CLK_CNT_SPL_VSYNC BIT(3)
+#define SUN6I_CSI_EN_CLK_CNT_EN BIT(2)
+#define SUN6I_CSI_EN_PTN_GEN_EN BIT(1)
+#define SUN6I_CSI_EN_CSI_EN BIT(0)
+
+/* Note that Allwinner manuals and code invert positive/negative definitions. */
+
+#define SUN6I_CSI_IF_CFG_REG 0x4
+#define SUN6I_CSI_IF_CFG_FIELD_DT_PCLK_SHIFT(v) (((v) << 24) & GENMASK(27, 24))
+#define SUN6I_CSI_IF_CFG_SRC_TYPE_PROGRESSIVE (0 << 21)
+#define SUN6I_CSI_IF_CFG_SRC_TYPE_INTERLACED (1 << 21)
+#define SUN6I_CSI_IF_CFG_FPS_DS BIT(20)
+#define SUN6I_CSI_IF_CFG_FIELD_POSITIVE (0 << 19)
+#define SUN6I_CSI_IF_CFG_FIELD_NEGATIVE (1 << 19)
+#define SUN6I_CSI_IF_CFG_VREF_POL_POSITIVE (0 << 18)
+#define SUN6I_CSI_IF_CFG_VREF_POL_NEGATIVE (1 << 18)
+#define SUN6I_CSI_IF_CFG_HREF_POL_POSITIVE (0 << 17)
+#define SUN6I_CSI_IF_CFG_HREF_POL_NEGATIVE (1 << 17)
+#define SUN6I_CSI_IF_CFG_CLK_POL_FALLING (0 << 16)
+#define SUN6I_CSI_IF_CFG_CLK_POL_RISING (1 << 16)
+#define SUN6I_CSI_IF_CFG_FIELD_DT_FIELD_VSYNC (0 << 14)
+#define SUN6I_CSI_IF_CFG_FIELD_DT_FIELD (1 << 14)
+#define SUN6I_CSI_IF_CFG_FIELD_DT_VSYNC (2 << 14)
+#define SUN6I_CSI_IF_CFG_DATA_WIDTH_8 (0 << 8)
+#define SUN6I_CSI_IF_CFG_DATA_WIDTH_10 (1 << 8)
+#define SUN6I_CSI_IF_CFG_DATA_WIDTH_12 (2 << 8)
+#define SUN6I_CSI_IF_CFG_DATA_WIDTH_8_PLUS_2 (3 << 8)
+#define SUN6I_CSI_IF_CFG_DATA_WIDTH_2_TIMES_8 (4 << 8)
+#define SUN6I_CSI_IF_CFG_IF_CSI (0 << 7)
+#define SUN6I_CSI_IF_CFG_IF_MIPI (1 << 7)
+#define SUN6I_CSI_IF_CFG_IF_CSI_YUV_RAW (0 << 0)
+#define SUN6I_CSI_IF_CFG_IF_CSI_YUV_COMBINED (1 << 0)
+#define SUN6I_CSI_IF_CFG_IF_CSI_BT656 (4 << 0)
+#define SUN6I_CSI_IF_CFG_IF_CSI_BT1120 (5 << 0)
+
+#define SUN6I_CSI_CAP_REG 0x8
+#define SUN6I_CSI_CAP_MASK(v) (((v) << 2) & GENMASK(5, 2))
+#define SUN6I_CSI_CAP_VCAP_ON BIT(1)
+#define SUN6I_CSI_CAP_SCAP_ON BIT(0)
+
+#define SUN6I_CSI_SYNC_CNT_REG 0xc
+#define SUN6I_CSI_FIFO_THRS_REG 0x10
+#define SUN6I_CSI_BT656_HEAD_CFG_REG 0x14
+
+#define SUN6I_CSI_PTN_LEN_REG 0x30
+#define SUN6I_CSI_PTN_ADDR_REG 0x34
+#define SUN6I_CSI_VER_REG 0x3c
+
+#define SUN6I_CSI_CH_CFG_REG 0x44
+#define SUN6I_CSI_CH_CFG_PAD_VAL(v) (((v) << 24) & GENMASK(31, 24))
+#define SUN6I_CSI_CH_CFG_INPUT_FMT(v) (((v) << 20) & GENMASK(23, 20))
+#define SUN6I_CSI_CH_CFG_OUTPUT_FMT(v) (((v) << 16) & GENMASK(19, 16))
+#define SUN6I_CSI_CH_CFG_VFLIP_EN BIT(13)
+#define SUN6I_CSI_CH_CFG_HFLIP_EN BIT(12)
+#define SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD0 (0 << 10)
+#define SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD1 (1 << 10)
+#define SUN6I_CSI_CH_CFG_FIELD_SEL_EITHER (2 << 10)
+#define SUN6I_CSI_CH_CFG_INPUT_YUV_SEQ(v) (((v) << 8) & GENMASK(9, 8))
+
+#define SUN6I_CSI_INPUT_FMT_RAW 0
+#define SUN6I_CSI_INPUT_FMT_YUV422 3
+#define SUN6I_CSI_INPUT_FMT_YUV420 4
+
+/* Note that Allwinner manuals and code invert frame/field definitions. */
+
+/* RAW */
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_8 0
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_10 1
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_RAW_12 2
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_RGB565 4
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_RGB888 5
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_PRGB888 6
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_8 8
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_10 9
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_RAW_12 10
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_RGB565 12
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_RGB888 13
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_PRGB888 14
+
+/* YUV */
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422P 0
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420P 1
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420P 2
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422P 3
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422SP 4
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420SP 5
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420SP 6
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422SP 7
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422MB 8
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420MB 9
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_YUV420MB 10
+#define SUN6I_CSI_OUTPUT_FMT_FIELD_YUV422MB 11
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV422SP_10 12
+#define SUN6I_CSI_OUTPUT_FMT_FRAME_YUV420SP_10 13
+
+/* YUV Planar */
+#define SUN6I_CSI_INPUT_YUV_SEQ_YUYV 0
+#define SUN6I_CSI_INPUT_YUV_SEQ_YVYU 1
+#define SUN6I_CSI_INPUT_YUV_SEQ_UYVY 2
+#define SUN6I_CSI_INPUT_YUV_SEQ_VYUY 3
+
+/* YUV Semi-planar */
+#define SUN6I_CSI_INPUT_YUV_SEQ_UV 0
+#define SUN6I_CSI_INPUT_YUV_SEQ_VU 1
+
+#define SUN6I_CSI_CH_SCALE_REG 0x4c
+#define SUN6I_CSI_CH_SCALE_QUART_EN BIT(0)
+
+#define SUN6I_CSI_CH_FIFO0_ADDR_REG 0x50
+#define SUN6I_CSI_CH_FIFO1_ADDR_REG 0x58
+#define SUN6I_CSI_CH_FIFO2_ADDR_REG 0x60
+
+#define SUN6I_CSI_CH_STA_REG 0x6c
+#define SUN6I_CSI_CH_STA_FIELD BIT(2)
+#define SUN6I_CSI_CH_STA_VCAP BIT(1)
+#define SUN6I_CSI_CH_STA_SCAP BIT(0)
+
+#define SUN6I_CSI_CH_INT_EN_REG 0x70
+#define SUN6I_CSI_CH_INT_EN_VS BIT(7)
+#define SUN6I_CSI_CH_INT_EN_HB_OF BIT(6)
+#define SUN6I_CSI_CH_INT_EN_MUL_ERR BIT(5)
+#define SUN6I_CSI_CH_INT_EN_FIFO2_OF BIT(4)
+#define SUN6I_CSI_CH_INT_EN_FIFO1_OF BIT(3)
+#define SUN6I_CSI_CH_INT_EN_FIFO0_OF BIT(2)
+#define SUN6I_CSI_CH_INT_EN_FD BIT(1)
+#define SUN6I_CSI_CH_INT_EN_CD BIT(0)
+
+#define SUN6I_CSI_CH_INT_STA_REG 0x74
+#define SUN6I_CSI_CH_INT_STA_CLEAR 0xff
+#define SUN6I_CSI_CH_INT_STA_VS BIT(7)
+#define SUN6I_CSI_CH_INT_STA_HB_OF BIT(6)
+#define SUN6I_CSI_CH_INT_STA_MUL_ERR BIT(5)
+#define SUN6I_CSI_CH_INT_STA_FIFO2_OF BIT(4)
+#define SUN6I_CSI_CH_INT_STA_FIFO1_OF BIT(3)
+#define SUN6I_CSI_CH_INT_STA_FIFO0_OF BIT(2)
+#define SUN6I_CSI_CH_INT_STA_FD BIT(1)
+#define SUN6I_CSI_CH_INT_STA_CD BIT(0)
+
+#define SUN6I_CSI_CH_FLD1_VSIZE_REG 0x78
+#define SUN6I_CSI_CH_FLD1_VSIZE_VER_LEN(v) (((v) << 16) & GENMASK(28, 16))
+#define SUN6I_CSI_CH_FLD1_VSIZE_VER_START(v) ((v) & GENMASK(12, 0))
+
+#define SUN6I_CSI_CH_HSIZE_REG 0x80
+#define SUN6I_CSI_CH_HSIZE_LEN(v) (((v) << 16) & GENMASK(28, 16))
+#define SUN6I_CSI_CH_HSIZE_START(v) ((v) & GENMASK(12, 0))
+
+#define SUN6I_CSI_CH_VSIZE_REG 0x84
+#define SUN6I_CSI_CH_VSIZE_LEN(v) (((v) << 16) & GENMASK(28, 16))
+#define SUN6I_CSI_CH_VSIZE_START(v) ((v) & GENMASK(12, 0))
+
+#define SUN6I_CSI_CH_BUF_LEN_REG 0x88
+#define SUN6I_CSI_CH_BUF_LEN_CHROMA_LINE(v) (((v) << 16) & GENMASK(29, 16))
+#define SUN6I_CSI_CH_BUF_LEN_LUMA_LINE(v) ((v) & GENMASK(13, 0))
+
+#define SUN6I_CSI_CH_FLIP_SIZE_REG 0x8c
+#define SUN6I_CSI_CH_FLIP_SIZE_VER_LEN(v) (((v) << 16) & GENMASK(28, 16))
+#define SUN6I_CSI_CH_FLIP_SIZE_VALID_LEN(v) ((v) & GENMASK(12, 0))
+
+#define SUN6I_CSI_CH_FRM_CLK_CNT_REG 0x90
+#define SUN6I_CSI_CH_ACC_ITNL_CLK_CNT_REG 0x94
+#define SUN6I_CSI_CH_FIFO_STAT_REG 0x98
+#define SUN6I_CSI_CH_PCLK_STAT_REG 0x9c
+
+#endif