578 lines
14 KiB
C
578 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2021-2022 Bootlin
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* Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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*/
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-fwnode.h>
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#include "sun6i_isp.h"
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#include "sun6i_isp_capture.h"
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#include "sun6i_isp_params.h"
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#include "sun6i_isp_proc.h"
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#include "sun6i_isp_reg.h"
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/* Helpers */
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void sun6i_isp_proc_dimensions(struct sun6i_isp_device *isp_dev,
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unsigned int *width, unsigned int *height)
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{
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if (width)
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*width = isp_dev->proc.mbus_format.width;
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if (height)
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*height = isp_dev->proc.mbus_format.height;
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}
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/* Format */
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static const struct sun6i_isp_proc_format sun6i_isp_proc_formats[] = {
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{
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.mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_BGGR,
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},
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{
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.mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_GBRG,
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},
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{
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.mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_GRBG,
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},
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{
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.mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_RGGB,
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},
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{
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.mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_BGGR,
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},
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{
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.mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_GBRG,
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},
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{
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.mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_GRBG,
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},
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{
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.mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10,
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.input_format = SUN6I_ISP_INPUT_FMT_RAW_RGGB,
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},
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};
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const struct sun6i_isp_proc_format *sun6i_isp_proc_format_find(u32 mbus_code)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(sun6i_isp_proc_formats); i++)
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if (sun6i_isp_proc_formats[i].mbus_code == mbus_code)
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return &sun6i_isp_proc_formats[i];
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return NULL;
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}
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/* Processor */
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static void sun6i_isp_proc_irq_enable(struct sun6i_isp_device *isp_dev)
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{
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struct regmap *regmap = isp_dev->regmap;
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regmap_write(regmap, SUN6I_ISP_FE_INT_EN_REG,
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SUN6I_ISP_FE_INT_EN_FINISH |
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SUN6I_ISP_FE_INT_EN_START |
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SUN6I_ISP_FE_INT_EN_PARA_SAVE |
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SUN6I_ISP_FE_INT_EN_PARA_LOAD |
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SUN6I_ISP_FE_INT_EN_SRC0_FIFO |
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SUN6I_ISP_FE_INT_EN_ROT_FINISH);
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}
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static void sun6i_isp_proc_irq_disable(struct sun6i_isp_device *isp_dev)
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{
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struct regmap *regmap = isp_dev->regmap;
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regmap_write(regmap, SUN6I_ISP_FE_INT_EN_REG, 0);
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}
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static void sun6i_isp_proc_irq_clear(struct sun6i_isp_device *isp_dev)
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{
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struct regmap *regmap = isp_dev->regmap;
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regmap_write(regmap, SUN6I_ISP_FE_INT_EN_REG, 0);
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regmap_write(regmap, SUN6I_ISP_FE_INT_STA_REG,
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SUN6I_ISP_FE_INT_STA_CLEAR);
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}
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static void sun6i_isp_proc_enable(struct sun6i_isp_device *isp_dev,
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struct sun6i_isp_proc_source *source)
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{
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struct sun6i_isp_proc *proc = &isp_dev->proc;
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struct regmap *regmap = isp_dev->regmap;
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u8 mode;
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/* Frontend */
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if (source == &proc->source_csi0)
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mode = SUN6I_ISP_SRC_MODE_CSI(0);
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else
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mode = SUN6I_ISP_SRC_MODE_CSI(1);
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regmap_write(regmap, SUN6I_ISP_FE_CFG_REG,
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SUN6I_ISP_FE_CFG_EN | SUN6I_ISP_FE_CFG_SRC0_MODE(mode));
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regmap_write(regmap, SUN6I_ISP_FE_CTRL_REG,
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SUN6I_ISP_FE_CTRL_VCAP_EN | SUN6I_ISP_FE_CTRL_PARA_READY);
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}
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static void sun6i_isp_proc_disable(struct sun6i_isp_device *isp_dev)
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{
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struct regmap *regmap = isp_dev->regmap;
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/* Frontend */
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regmap_write(regmap, SUN6I_ISP_FE_CTRL_REG, 0);
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regmap_write(regmap, SUN6I_ISP_FE_CFG_REG, 0);
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}
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static void sun6i_isp_proc_configure(struct sun6i_isp_device *isp_dev)
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{
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struct v4l2_mbus_framefmt *mbus_format = &isp_dev->proc.mbus_format;
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const struct sun6i_isp_proc_format *format;
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u32 value;
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/* Module */
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value = sun6i_isp_load_read(isp_dev, SUN6I_ISP_MODULE_EN_REG);
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value |= SUN6I_ISP_MODULE_EN_SRC0;
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sun6i_isp_load_write(isp_dev, SUN6I_ISP_MODULE_EN_REG, value);
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/* Input */
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format = sun6i_isp_proc_format_find(mbus_format->code);
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if (WARN_ON(!format))
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return;
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sun6i_isp_load_write(isp_dev, SUN6I_ISP_MODE_REG,
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SUN6I_ISP_MODE_INPUT_FMT(format->input_format) |
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SUN6I_ISP_MODE_INPUT_YUV_SEQ(format->input_yuv_seq) |
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SUN6I_ISP_MODE_SHARP(1) |
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SUN6I_ISP_MODE_HIST(2));
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}
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/* V4L2 Subdev */
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static int sun6i_isp_proc_s_stream(struct v4l2_subdev *subdev, int on)
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{
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struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
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struct sun6i_isp_proc *proc = &isp_dev->proc;
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struct media_pad *local_pad = &proc->pads[SUN6I_ISP_PROC_PAD_SINK_CSI];
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struct device *dev = isp_dev->dev;
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struct sun6i_isp_proc_source *source;
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struct v4l2_subdev *source_subdev;
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struct media_pad *remote_pad;
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int ret;
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/* Source */
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remote_pad = media_pad_remote_pad_unique(local_pad);
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if (IS_ERR(remote_pad)) {
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dev_err(dev,
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"zero or more than a single source connected to the bridge\n");
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return PTR_ERR(remote_pad);
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}
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source_subdev = media_entity_to_v4l2_subdev(remote_pad->entity);
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if (source_subdev == proc->source_csi0.subdev)
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source = &proc->source_csi0;
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else
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source = &proc->source_csi1;
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if (!on) {
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sun6i_isp_proc_irq_disable(isp_dev);
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v4l2_subdev_call(source_subdev, video, s_stream, 0);
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ret = 0;
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goto disable;
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}
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/* PM */
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ret = pm_runtime_resume_and_get(dev);
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if (ret < 0)
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return ret;
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/* Clear */
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sun6i_isp_proc_irq_clear(isp_dev);
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/* Configure */
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sun6i_isp_tables_configure(isp_dev);
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sun6i_isp_params_configure(isp_dev);
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sun6i_isp_proc_configure(isp_dev);
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sun6i_isp_capture_configure(isp_dev);
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/* State Update */
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sun6i_isp_state_update(isp_dev, true);
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/* Enable */
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sun6i_isp_proc_irq_enable(isp_dev);
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sun6i_isp_proc_enable(isp_dev, source);
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ret = v4l2_subdev_call(source_subdev, video, s_stream, 1);
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if (ret && ret != -ENOIOCTLCMD) {
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sun6i_isp_proc_irq_disable(isp_dev);
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goto disable;
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}
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return 0;
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disable:
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sun6i_isp_proc_disable(isp_dev);
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pm_runtime_put(dev);
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return ret;
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}
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static const struct v4l2_subdev_video_ops sun6i_isp_proc_video_ops = {
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.s_stream = sun6i_isp_proc_s_stream,
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};
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static void
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sun6i_isp_proc_mbus_format_prepare(struct v4l2_mbus_framefmt *mbus_format)
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{
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if (!sun6i_isp_proc_format_find(mbus_format->code))
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mbus_format->code = sun6i_isp_proc_formats[0].mbus_code;
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mbus_format->field = V4L2_FIELD_NONE;
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mbus_format->colorspace = V4L2_COLORSPACE_RAW;
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mbus_format->quantization = V4L2_QUANTIZATION_DEFAULT;
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mbus_format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
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}
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static int sun6i_isp_proc_init_cfg(struct v4l2_subdev *subdev,
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struct v4l2_subdev_state *state)
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{
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struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
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unsigned int pad = SUN6I_ISP_PROC_PAD_SINK_CSI;
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struct v4l2_mbus_framefmt *mbus_format =
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v4l2_subdev_get_try_format(subdev, state, pad);
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struct mutex *lock = &isp_dev->proc.lock;
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mutex_lock(lock);
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mbus_format->code = sun6i_isp_proc_formats[0].mbus_code;
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mbus_format->width = 1280;
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mbus_format->height = 720;
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sun6i_isp_proc_mbus_format_prepare(mbus_format);
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mutex_unlock(lock);
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return 0;
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}
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static int
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sun6i_isp_proc_enum_mbus_code(struct v4l2_subdev *subdev,
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struct v4l2_subdev_state *state,
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struct v4l2_subdev_mbus_code_enum *code_enum)
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{
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if (code_enum->index >= ARRAY_SIZE(sun6i_isp_proc_formats))
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return -EINVAL;
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code_enum->code = sun6i_isp_proc_formats[code_enum->index].mbus_code;
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return 0;
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}
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static int sun6i_isp_proc_get_fmt(struct v4l2_subdev *subdev,
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struct v4l2_subdev_state *state,
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struct v4l2_subdev_format *format)
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{
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struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
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struct v4l2_mbus_framefmt *mbus_format = &format->format;
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struct mutex *lock = &isp_dev->proc.lock;
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mutex_lock(lock);
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if (format->which == V4L2_SUBDEV_FORMAT_TRY)
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*mbus_format = *v4l2_subdev_get_try_format(subdev, state,
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format->pad);
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else
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*mbus_format = isp_dev->proc.mbus_format;
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mutex_unlock(lock);
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return 0;
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}
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static int sun6i_isp_proc_set_fmt(struct v4l2_subdev *subdev,
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struct v4l2_subdev_state *state,
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struct v4l2_subdev_format *format)
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{
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struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
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struct v4l2_mbus_framefmt *mbus_format = &format->format;
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struct mutex *lock = &isp_dev->proc.lock;
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mutex_lock(lock);
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sun6i_isp_proc_mbus_format_prepare(mbus_format);
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if (format->which == V4L2_SUBDEV_FORMAT_TRY)
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*v4l2_subdev_get_try_format(subdev, state, format->pad) =
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*mbus_format;
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else
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isp_dev->proc.mbus_format = *mbus_format;
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mutex_unlock(lock);
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return 0;
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}
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static const struct v4l2_subdev_pad_ops sun6i_isp_proc_pad_ops = {
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.init_cfg = sun6i_isp_proc_init_cfg,
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.enum_mbus_code = sun6i_isp_proc_enum_mbus_code,
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.get_fmt = sun6i_isp_proc_get_fmt,
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.set_fmt = sun6i_isp_proc_set_fmt,
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};
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static const struct v4l2_subdev_ops sun6i_isp_proc_subdev_ops = {
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.video = &sun6i_isp_proc_video_ops,
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.pad = &sun6i_isp_proc_pad_ops,
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};
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/* Media Entity */
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static const struct media_entity_operations sun6i_isp_proc_entity_ops = {
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.link_validate = v4l2_subdev_link_validate,
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};
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/* V4L2 Async */
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static int sun6i_isp_proc_link(struct sun6i_isp_device *isp_dev,
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int sink_pad_index,
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struct v4l2_subdev *remote_subdev, bool enabled)
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{
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struct device *dev = isp_dev->dev;
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struct v4l2_subdev *subdev = &isp_dev->proc.subdev;
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struct media_entity *sink_entity = &subdev->entity;
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struct media_entity *source_entity = &remote_subdev->entity;
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int source_pad_index;
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int ret;
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/* Get the first remote source pad. */
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ret = media_entity_get_fwnode_pad(source_entity, remote_subdev->fwnode,
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MEDIA_PAD_FL_SOURCE);
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if (ret < 0) {
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dev_err(dev, "missing source pad in external entity %s\n",
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source_entity->name);
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return -EINVAL;
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}
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source_pad_index = ret;
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dev_dbg(dev, "creating %s:%u -> %s:%u link\n", source_entity->name,
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source_pad_index, sink_entity->name, sink_pad_index);
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ret = media_create_pad_link(source_entity, source_pad_index,
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sink_entity, sink_pad_index,
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enabled ? MEDIA_LNK_FL_ENABLED : 0);
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if (ret < 0) {
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dev_err(dev, "failed to create %s:%u -> %s:%u link\n",
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source_entity->name, source_pad_index,
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sink_entity->name, sink_pad_index);
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return ret;
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}
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return 0;
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}
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static int sun6i_isp_proc_notifier_bound(struct v4l2_async_notifier *notifier,
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struct v4l2_subdev *remote_subdev,
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struct v4l2_async_connection *async_subdev)
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{
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struct sun6i_isp_device *isp_dev =
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container_of(notifier, struct sun6i_isp_device, proc.notifier);
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struct sun6i_isp_proc_async_subdev *proc_async_subdev =
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container_of(async_subdev, struct sun6i_isp_proc_async_subdev,
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async_subdev);
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struct sun6i_isp_proc *proc = &isp_dev->proc;
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struct sun6i_isp_proc_source *source = proc_async_subdev->source;
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bool enabled;
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switch (source->endpoint.base.port) {
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case SUN6I_ISP_PORT_CSI0:
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source = &proc->source_csi0;
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enabled = true;
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break;
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case SUN6I_ISP_PORT_CSI1:
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source = &proc->source_csi1;
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enabled = !proc->source_csi0.expected;
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break;
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default:
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return -EINVAL;
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}
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source->subdev = remote_subdev;
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return sun6i_isp_proc_link(isp_dev, SUN6I_ISP_PROC_PAD_SINK_CSI,
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remote_subdev, enabled);
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}
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static int
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sun6i_isp_proc_notifier_complete(struct v4l2_async_notifier *notifier)
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{
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struct sun6i_isp_device *isp_dev =
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container_of(notifier, struct sun6i_isp_device, proc.notifier);
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struct v4l2_device *v4l2_dev = &isp_dev->v4l2.v4l2_dev;
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int ret;
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ret = v4l2_device_register_subdev_nodes(v4l2_dev);
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if (ret)
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return ret;
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return 0;
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}
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static const struct v4l2_async_notifier_operations
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sun6i_isp_proc_notifier_ops = {
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.bound = sun6i_isp_proc_notifier_bound,
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.complete = sun6i_isp_proc_notifier_complete,
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};
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/* Processor */
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static int sun6i_isp_proc_source_setup(struct sun6i_isp_device *isp_dev,
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struct sun6i_isp_proc_source *source,
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u32 port)
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{
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struct device *dev = isp_dev->dev;
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struct v4l2_async_notifier *notifier = &isp_dev->proc.notifier;
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struct v4l2_fwnode_endpoint *endpoint = &source->endpoint;
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struct sun6i_isp_proc_async_subdev *proc_async_subdev;
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struct fwnode_handle *handle = NULL;
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int ret;
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handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), port, 0, 0);
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if (!handle)
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return -ENODEV;
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ret = v4l2_fwnode_endpoint_parse(handle, endpoint);
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if (ret)
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goto complete;
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proc_async_subdev =
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v4l2_async_nf_add_fwnode_remote(notifier, handle,
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struct
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sun6i_isp_proc_async_subdev);
|
|
if (IS_ERR(proc_async_subdev)) {
|
|
ret = PTR_ERR(proc_async_subdev);
|
|
goto complete;
|
|
}
|
|
|
|
proc_async_subdev->source = source;
|
|
|
|
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;
|
|
|
|
mutex_init(&proc->lock);
|
|
|
|
/* 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_nf_init(notifier, v4l2_dev);
|
|
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_nf_register(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_nf_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_nf_unregister(notifier);
|
|
v4l2_async_nf_cleanup(notifier);
|
|
|
|
v4l2_device_unregister_subdev(subdev);
|
|
media_entity_cleanup(&subdev->entity);
|
|
}
|