diff options
Diffstat (limited to 'drivers/staging/media/rkisp1/rkisp1-isp.c')
| -rw-r--r-- | drivers/staging/media/rkisp1/rkisp1-isp.c | 1164 |
1 files changed, 1164 insertions, 0 deletions
diff --git a/drivers/staging/media/rkisp1/rkisp1-isp.c b/drivers/staging/media/rkisp1/rkisp1-isp.c new file mode 100644 index 000000000000..328c7ea60971 --- /dev/null +++ b/drivers/staging/media/rkisp1/rkisp1-isp.c @@ -0,0 +1,1164 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Rockchip ISP1 Driver - ISP Subdevice + * + * Copyright (C) 2019 Collabora, Ltd. + * + * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd. + * Copyright (C) 2017 Rockchip Electronics Co., Ltd. + */ + +#include <linux/iopoll.h> +#include <linux/phy/phy.h> +#include <linux/phy/phy-mipi-dphy.h> +#include <linux/pm_runtime.h> +#include <linux/videodev2.h> +#include <linux/vmalloc.h> +#include <media/v4l2-event.h> + +#include "rkisp1-common.h" + +#define RKISP1_DEF_SINK_PAD_FMT MEDIA_BUS_FMT_SRGGB10_1X10 +#define RKISP1_DEF_SRC_PAD_FMT MEDIA_BUS_FMT_YUYV8_2X8 + +#define RKISP1_ISP_DEV_NAME RKISP1_DRIVER_NAME "_isp" + +#define RKISP1_DIR_SRC BIT(0) +#define RKISP1_DIR_SINK BIT(1) +#define RKISP1_DIR_SINK_SRC (RKISP1_DIR_SINK | RKISP1_DIR_SRC) + +/* + * NOTE: MIPI controller and input MUX are also configured in this file, + * because ISP Subdev is not only describe ISP submodule(input size,format, + * output size, format), but also a virtual route device. + */ + +/* + * There are many variables named with format/frame in below code, + * please see here for their meaning. + * Cropping in the sink pad defines the image region from the sensor. + * Cropping in the source pad defines the region for the Image Stabilizer (IS) + * + * Cropping regions of ISP + * + * +---------------------------------------------------------+ + * | Sensor image | + * | +---------------------------------------------------+ | + * | | CIF_ISP_ACQ (for black level) | | + * | | sink pad format | | + * | | +--------------------------------------------+ | | + * | | | CIF_ISP_OUT | | | + * | | | sink pad crop | | | + * | | | +---------------------------------+ | | | + * | | | | CIF_ISP_IS | | | | + * | | | | source pad crop and format | | | | + * | | | +---------------------------------+ | | | + * | | +--------------------------------------------+ | | + * | +---------------------------------------------------+ | + * +---------------------------------------------------------+ + */ + +static const struct rkisp1_isp_mbus_info rkisp1_isp_formats[] = { + { + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8, + .fmt_type = RKISP1_FMT_YUV, + .direction = RKISP1_DIR_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW10, + .bayer_pat = RKISP1_RAW_RGGB, + .bus_width = 10, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW10, + .bayer_pat = RKISP1_RAW_BGGR, + .bus_width = 10, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW10, + .bayer_pat = RKISP1_RAW_GBRG, + .bus_width = 10, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW10, + .bayer_pat = RKISP1_RAW_GRBG, + .bus_width = 10, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SRGGB12_1X12, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW12, + .bayer_pat = RKISP1_RAW_RGGB, + .bus_width = 12, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SBGGR12_1X12, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW12, + .bayer_pat = RKISP1_RAW_BGGR, + .bus_width = 12, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SGBRG12_1X12, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW12, + .bayer_pat = RKISP1_RAW_GBRG, + .bus_width = 12, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW12, + .bayer_pat = RKISP1_RAW_GRBG, + .bus_width = 12, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW8, + .bayer_pat = RKISP1_RAW_RGGB, + .bus_width = 8, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW8, + .bayer_pat = RKISP1_RAW_BGGR, + .bus_width = 8, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW8, + .bayer_pat = RKISP1_RAW_GBRG, + .bus_width = 8, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8, + .fmt_type = RKISP1_FMT_BAYER, + .mipi_dt = RKISP1_CIF_CSI2_DT_RAW8, + .bayer_pat = RKISP1_RAW_GRBG, + .bus_width = 8, + .direction = RKISP1_DIR_SINK_SRC, + }, { + .mbus_code = MEDIA_BUS_FMT_YUYV8_1X16, + .fmt_type = RKISP1_FMT_YUV, + .mipi_dt = RKISP1_CIF_CSI2_DT_YUV422_8b, + .yuv_seq = RKISP1_CIF_ISP_ACQ_PROP_YCBYCR, + .bus_width = 16, + .direction = RKISP1_DIR_SINK, + }, { + .mbus_code = MEDIA_BUS_FMT_YVYU8_1X16, + .fmt_type = RKISP1_FMT_YUV, + .mipi_dt = RKISP1_CIF_CSI2_DT_YUV422_8b, + .yuv_seq = RKISP1_CIF_ISP_ACQ_PROP_YCRYCB, + .bus_width = 16, + .direction = RKISP1_DIR_SINK, + }, { + .mbus_code = MEDIA_BUS_FMT_UYVY8_1X16, + .fmt_type = RKISP1_FMT_YUV, + .mipi_dt = RKISP1_CIF_CSI2_DT_YUV422_8b, + .yuv_seq = RKISP1_CIF_ISP_ACQ_PROP_CBYCRY, + .bus_width = 16, + .direction = RKISP1_DIR_SINK, + }, { + .mbus_code = MEDIA_BUS_FMT_VYUY8_1X16, + .fmt_type = RKISP1_FMT_YUV, + .mipi_dt = RKISP1_CIF_CSI2_DT_YUV422_8b, + .yuv_seq = RKISP1_CIF_ISP_ACQ_PROP_CRYCBY, + .bus_width = 16, + .direction = RKISP1_DIR_SINK, + }, +}; + +/* ---------------------------------------------------------------------------- + * Helpers + */ + +const struct rkisp1_isp_mbus_info *rkisp1_isp_mbus_info_get(u32 mbus_code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(rkisp1_isp_formats); i++) { + const struct rkisp1_isp_mbus_info *fmt = &rkisp1_isp_formats[i]; + + if (fmt->mbus_code == mbus_code) + return fmt; + } + + return NULL; +} + +static struct v4l2_subdev *rkisp1_get_remote_sensor(struct v4l2_subdev *sd) +{ + struct media_pad *local, *remote; + struct media_entity *sensor_me; + + local = &sd->entity.pads[RKISP1_ISP_PAD_SINK_VIDEO]; + remote = media_entity_remote_pad(local); + if (!remote) { + dev_warn(sd->dev, "No link between isp and sensor\n"); + return NULL; + } + + sensor_me = remote->entity; + return media_entity_to_v4l2_subdev(sensor_me); +} + +static struct v4l2_mbus_framefmt * +rkisp1_isp_get_pad_fmt(struct rkisp1_isp *isp, + struct v4l2_subdev_pad_config *cfg, + unsigned int pad, u32 which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_format(&isp->sd, cfg, pad); + else + return v4l2_subdev_get_try_format(&isp->sd, isp->pad_cfg, pad); +} + +static struct v4l2_rect * +rkisp1_isp_get_pad_crop(struct rkisp1_isp *isp, + struct v4l2_subdev_pad_config *cfg, + unsigned int pad, u32 which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_crop(&isp->sd, cfg, pad); + else + return v4l2_subdev_get_try_crop(&isp->sd, isp->pad_cfg, pad); +} + +/* ---------------------------------------------------------------------------- + * Camera Interface registers configurations + */ + +/* + * Image Stabilization. + * This should only be called when configuring CIF + * or at the frame end interrupt + */ +static void rkisp1_config_ism(struct rkisp1_device *rkisp1) +{ + struct v4l2_rect *src_crop = + rkisp1_isp_get_pad_crop(&rkisp1->isp, NULL, + RKISP1_ISP_PAD_SOURCE_VIDEO, + V4L2_SUBDEV_FORMAT_ACTIVE); + u32 val; + + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_IS_RECENTER); + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_IS_MAX_DX); + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_IS_MAX_DY); + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_IS_DISPLACE); + rkisp1_write(rkisp1, src_crop->left, RKISP1_CIF_ISP_IS_H_OFFS); + rkisp1_write(rkisp1, src_crop->top, RKISP1_CIF_ISP_IS_V_OFFS); + rkisp1_write(rkisp1, src_crop->width, RKISP1_CIF_ISP_IS_H_SIZE); + rkisp1_write(rkisp1, src_crop->height, RKISP1_CIF_ISP_IS_V_SIZE); + + /* IS(Image Stabilization) is always on, working as output crop */ + rkisp1_write(rkisp1, 1, RKISP1_CIF_ISP_IS_CTRL); + val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_CTRL); + val |= RKISP1_CIF_ISP_CTRL_ISP_CFG_UPD; + rkisp1_write(rkisp1, val, RKISP1_CIF_ISP_CTRL); +} + +/* + * configure ISP blocks with input format, size...... + */ +static int rkisp1_config_isp(struct rkisp1_device *rkisp1) +{ + u32 isp_ctrl = 0, irq_mask = 0, acq_mult = 0, signal = 0; + const struct rkisp1_isp_mbus_info *src_fmt, *sink_fmt; + struct rkisp1_sensor_async *sensor; + struct v4l2_mbus_framefmt *sink_frm; + struct v4l2_rect *sink_crop; + + sensor = rkisp1->active_sensor; + sink_fmt = rkisp1->isp.sink_fmt; + src_fmt = rkisp1->isp.src_fmt; + sink_frm = rkisp1_isp_get_pad_fmt(&rkisp1->isp, NULL, + RKISP1_ISP_PAD_SINK_VIDEO, + V4L2_SUBDEV_FORMAT_ACTIVE); + sink_crop = rkisp1_isp_get_pad_crop(&rkisp1->isp, NULL, + RKISP1_ISP_PAD_SINK_VIDEO, + V4L2_SUBDEV_FORMAT_ACTIVE); + + if (sink_fmt->fmt_type == RKISP1_FMT_BAYER) { + acq_mult = 1; + if (src_fmt->fmt_type == RKISP1_FMT_BAYER) { + if (sensor->mbus.type == V4L2_MBUS_BT656) + isp_ctrl = RKISP1_CIF_ISP_CTRL_ISP_MODE_RAW_PICT_ITU656; + else + isp_ctrl = RKISP1_CIF_ISP_CTRL_ISP_MODE_RAW_PICT; + } else { + rkisp1_write(rkisp1, RKISP1_CIF_ISP_DEMOSAIC_TH(0xc), + RKISP1_CIF_ISP_DEMOSAIC); + + if (sensor->mbus.type == V4L2_MBUS_BT656) + isp_ctrl = RKISP1_CIF_ISP_CTRL_ISP_MODE_BAYER_ITU656; + else + isp_ctrl = RKISP1_CIF_ISP_CTRL_ISP_MODE_BAYER_ITU601; + } + } else if (sink_fmt->fmt_type == RKISP1_FMT_YUV) { + acq_mult = 2; + if (sensor->mbus.type == V4L2_MBUS_CSI2_DPHY) { + isp_ctrl = RKISP1_CIF_ISP_CTRL_ISP_MODE_ITU601; + } else { + if (sensor->mbus.type == V4L2_MBUS_BT656) + isp_ctrl = RKISP1_CIF_ISP_CTRL_ISP_MODE_ITU656; + else + isp_ctrl = RKISP1_CIF_ISP_CTRL_ISP_MODE_ITU601; + } + + irq_mask |= RKISP1_CIF_ISP_DATA_LOSS; + } + + /* Set up input acquisition properties */ + if (sensor->mbus.type == V4L2_MBUS_BT656 || + sensor->mbus.type == V4L2_MBUS_PARALLEL) { + if (sensor->mbus.flags & V4L2_MBUS_PCLK_SAMPLE_RISING) + signal = RKISP1_CIF_ISP_ACQ_PROP_POS_EDGE; + } + + if (sensor->mbus.type == V4L2_MBUS_PARALLEL) { + if (sensor->mbus.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) + signal |= RKISP1_CIF_ISP_ACQ_PROP_VSYNC_LOW; + + if (sensor->mbus.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) + signal |= RKISP1_CIF_ISP_ACQ_PROP_HSYNC_LOW; + } + + rkisp1_write(rkisp1, isp_ctrl, RKISP1_CIF_ISP_CTRL); + rkisp1_write(rkisp1, signal | sink_fmt->yuv_seq | + RKISP1_CIF_ISP_ACQ_PROP_BAYER_PAT(sink_fmt->bayer_pat) | + RKISP1_CIF_ISP_ACQ_PROP_FIELD_SEL_ALL, + RKISP1_CIF_ISP_ACQ_PROP); + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_ACQ_NR_FRAMES); + + /* Acquisition Size */ + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_ACQ_H_OFFS); + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_ACQ_V_OFFS); + rkisp1_write(rkisp1, + acq_mult * sink_frm->width, RKISP1_CIF_ISP_ACQ_H_SIZE); + rkisp1_write(rkisp1, sink_frm->height, RKISP1_CIF_ISP_ACQ_V_SIZE); + + /* ISP Out Area */ + rkisp1_write(rkisp1, sink_crop->left, RKISP1_CIF_ISP_OUT_H_OFFS); + rkisp1_write(rkisp1, sink_crop->top, RKISP1_CIF_ISP_OUT_V_OFFS); + rkisp1_write(rkisp1, sink_crop->width, RKISP1_CIF_ISP_OUT_H_SIZE); + rkisp1_write(rkisp1, sink_crop->height, RKISP1_CIF_ISP_OUT_V_SIZE); + + irq_mask |= RKISP1_CIF_ISP_FRAME | RKISP1_CIF_ISP_V_START | + RKISP1_CIF_ISP_PIC_SIZE_ERROR | RKISP1_CIF_ISP_FRAME_IN; + rkisp1_write(rkisp1, irq_mask, RKISP1_CIF_ISP_IMSC); + + if (src_fmt->fmt_type == RKISP1_FMT_BAYER) { + rkisp1_params_disable(&rkisp1->params); + } else { + struct v4l2_mbus_framefmt *src_frm; + + src_frm = rkisp1_isp_get_pad_fmt(&rkisp1->isp, NULL, + RKISP1_ISP_PAD_SINK_VIDEO, + V4L2_SUBDEV_FORMAT_ACTIVE); + rkisp1_params_configure(&rkisp1->params, sink_fmt->bayer_pat, + src_frm->quantization); + } + + return 0; +} + +static int rkisp1_config_dvp(struct rkisp1_device *rkisp1) +{ + const struct rkisp1_isp_mbus_info *sink_fmt = rkisp1->isp.sink_fmt; + u32 val, input_sel; + + switch (sink_fmt->bus_width) { + case 8: + input_sel = RKISP1_CIF_ISP_ACQ_PROP_IN_SEL_8B_ZERO; + break; + case 10: + input_sel = RKISP1_CIF_ISP_ACQ_PROP_IN_SEL_10B_ZERO; + break; + case 12: + input_sel = RKISP1_CIF_ISP_ACQ_PROP_IN_SEL_12B; + break; + default: + dev_err(rkisp1->dev, "Invalid bus width\n"); + return -EINVAL; + } + + val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_ACQ_PROP); + rkisp1_write(rkisp1, val | input_sel, RKISP1_CIF_ISP_ACQ_PROP); + + return 0; +} + +static int rkisp1_config_mipi(struct rkisp1_device *rkisp1) +{ + const struct rkisp1_isp_mbus_info *sink_fmt = rkisp1->isp.sink_fmt; + unsigned int lanes; + u32 mipi_ctrl; + + /* + * rkisp1->active_sensor->mbus is set in isp or d-phy notifier_bound + * function + */ + switch (rkisp1->active_sensor->mbus.flags & V4L2_MBUS_CSI2_LANES) { + case V4L2_MBUS_CSI2_4_LANE: + lanes = 4; + break; + case V4L2_MBUS_CSI2_3_LANE: + lanes = 3; + break; + case V4L2_MBUS_CSI2_2_LANE: + lanes = 2; + break; + case V4L2_MBUS_CSI2_1_LANE: + lanes = 1; + break; + default: + return -EINVAL; + } + + mipi_ctrl = RKISP1_CIF_MIPI_CTRL_NUM_LANES(lanes - 1) | + RKISP1_CIF_MIPI_CTRL_SHUTDOWNLANES(0xf) | + RKISP1_CIF_MIPI_CTRL_ERR_SOT_SYNC_HS_SKIP | + RKISP1_CIF_MIPI_CTRL_CLOCKLANE_ENA; + + rkisp1_write(rkisp1, mipi_ctrl, RKISP1_CIF_MIPI_CTRL); + + /* Configure Data Type and Virtual Channel */ + rkisp1_write(rkisp1, + RKISP1_CIF_MIPI_DATA_SEL_DT(sink_fmt->mipi_dt) | + RKISP1_CIF_MIPI_DATA_SEL_VC(0), + RKISP1_CIF_MIPI_IMG_DATA_SEL); + + /* Clear MIPI interrupts */ + rkisp1_write(rkisp1, ~0, RKISP1_CIF_MIPI_ICR); + /* + * Disable RKISP1_CIF_MIPI_ERR_DPHY interrupt here temporary for + * isp bus may be dead when switch isp. + */ + rkisp1_write(rkisp1, + RKISP1_CIF_MIPI_FRAME_END | RKISP1_CIF_MIPI_ERR_CSI | + RKISP1_CIF_MIPI_ERR_DPHY | + RKISP1_CIF_MIPI_SYNC_FIFO_OVFLW(0x03) | + RKISP1_CIF_MIPI_ADD_DATA_OVFLW, + RKISP1_CIF_MIPI_IMSC); + + dev_dbg(rkisp1->dev, "\n MIPI_CTRL 0x%08x\n" + " MIPI_IMG_DATA_SEL 0x%08x\n" + " MIPI_STATUS 0x%08x\n" + " MIPI_IMSC 0x%08x\n", + rkisp1_read(rkisp1, RKISP1_CIF_MIPI_CTRL), + rkisp1_read(rkisp1, RKISP1_CIF_MIPI_IMG_DATA_SEL), + rkisp1_read(rkisp1, RKISP1_CIF_MIPI_STATUS), + rkisp1_read(rkisp1, RKISP1_CIF_MIPI_IMSC)); + + return 0; +} + +/* Configure MUX */ +static int rkisp1_config_path(struct rkisp1_device *rkisp1) +{ + struct rkisp1_sensor_async *sensor = rkisp1->active_sensor; + u32 dpcl = rkisp1_read(rkisp1, RKISP1_CIF_VI_DPCL); + int ret = 0; + + if (sensor->mbus.type == V4L2_MBUS_BT656 || + sensor->mbus.type == V4L2_MBUS_PARALLEL) { + ret = rkisp1_config_dvp(rkisp1); + dpcl |= RKISP1_CIF_VI_DPCL_IF_SEL_PARALLEL; + } else if (sensor->mbus.type == V4L2_MBUS_CSI2_DPHY) { + ret = rkisp1_config_mipi(rkisp1); + dpcl |= RKISP1_CIF_VI_DPCL_IF_SEL_MIPI; + } + + rkisp1_write(rkisp1, dpcl, RKISP1_CIF_VI_DPCL); + + return ret; +} + +/* Hardware configure Entry */ +static int rkisp1_config_cif(struct rkisp1_device *rkisp1) +{ + u32 cif_id; + int ret; + + cif_id = rkisp1_read(rkisp1, RKISP1_CIF_VI_ID); + dev_dbg(rkisp1->dev, "CIF_ID 0x%08x\n", cif_id); + + ret = rkisp1_config_isp(rkisp1); + if (ret) + return ret; + ret = rkisp1_config_path(rkisp1); + if (ret) + return ret; + rkisp1_config_ism(rkisp1); + + return 0; +} + +static int rkisp1_isp_stop(struct rkisp1_device *rkisp1) +{ + u32 val; + + /* + * ISP(mi) stop in mi frame end -> Stop ISP(mipi) -> + * Stop ISP(isp) ->wait for ISP isp off + */ + /* stop and clear MI, MIPI, and ISP interrupts */ + rkisp1_write(rkisp1, 0, RKISP1_CIF_MIPI_IMSC); + rkisp1_write(rkisp1, ~0, RKISP1_CIF_MIPI_ICR); + + rkisp1_write(rkisp1, 0, RKISP1_CIF_ISP_IMSC); + rkisp1_write(rkisp1, ~0, RKISP1_CIF_ISP_ICR); + + rkisp1_write(rkisp1, 0, RKISP1_CIF_MI_IMSC); + rkisp1_write(rkisp1, ~0, RKISP1_CIF_MI_ICR); + val = rkisp1_read(rkisp1, RKISP1_CIF_MIPI_CTRL); + rkisp1_write(rkisp1, val & (~RKISP1_CIF_MIPI_CTRL_OUTPUT_ENA), + RKISP1_CIF_MIPI_CTRL); + /* stop ISP */ + val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_CTRL); + val &= ~(RKISP1_CIF_ISP_CTRL_ISP_INFORM_ENABLE | + RKISP1_CIF_ISP_CTRL_ISP_ENABLE); + rkisp1_write(rkisp1, val, RKISP1_CIF_ISP_CTRL); + + val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_CTRL); + rkisp1_write(rkisp1, val | RKISP1_CIF_ISP_CTRL_ISP_CFG_UPD, + RKISP1_CIF_ISP_CTRL); + + readx_poll_timeout(readl, rkisp1->base_addr + RKISP1_CIF_ISP_RIS, + val, val & RKISP1_CIF_ISP_OFF, 20, 100); + rkisp1_write(rkisp1, + RKISP1_CIF_IRCL_MIPI_SW_RST | RKISP1_CIF_IRCL_ISP_SW_RST, + RKISP1_CIF_IRCL); + rkisp1_write(rkisp1, 0x0, RKISP1_CIF_IRCL); + + return 0; +} + +static void rkisp1_config_clk(struct rkisp1_device *rkisp1) +{ + u32 val = RKISP1_CIF_ICCL_ISP_CLK | RKISP1_CIF_ICCL_CP_CLK | + RKISP1_CIF_ICCL_MRSZ_CLK | RKISP1_CIF_ICCL_SRSZ_CLK | + RKISP1_CIF_ICCL_JPEG_CLK | RKISP1_CIF_ICCL_MI_CLK | + RKISP1_CIF_ICCL_IE_CLK | RKISP1_CIF_ICCL_MIPI_CLK | + RKISP1_CIF_ICCL_DCROP_CLK; + + rkisp1_write(rkisp1, val, RKISP1_CIF_ICCL); +} + +static int rkisp1_isp_start(struct rkisp1_device *rkisp1) +{ + struct rkisp1_sensor_async *sensor = rkisp1->active_sensor; + u32 val; + + rkisp1_config_clk(rkisp1); + + /* Activate MIPI */ + if (sensor->mbus.type == V4L2_MBUS_CSI2_DPHY) { + val = rkisp1_read(rkisp1, RKISP1_CIF_MIPI_CTRL); + rkisp1_write(rkisp1, val | RKISP1_CIF_MIPI_CTRL_OUTPUT_ENA, + RKISP1_CIF_MIPI_CTRL); + } + /* Activate ISP */ + val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_CTRL); + val |= RKISP1_CIF_ISP_CTRL_ISP_CFG_UPD | + RKISP1_CIF_ISP_CTRL_ISP_ENABLE | + RKISP1_CIF_ISP_CTRL_ISP_INFORM_ENABLE; + rkisp1_write(rkisp1, val, RKISP1_CIF_ISP_CTRL); + + /* + * CIF spec says to wait for sufficient time after enabling + * the MIPI interface and before starting the sensor output. + */ + usleep_range(1000, 1200); + + return 0; +} + +/* ---------------------------------------------------------------------------- + * Subdev pad operations + */ + +static int rkisp1_isp_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + unsigned int i, dir; + int pos = 0; + + if (code->pad == RKISP1_ISP_PAD_SINK_VIDEO) { + dir = RKISP1_DIR_SINK; + } else if (code->pad == RKISP1_ISP_PAD_SOURCE_VIDEO) { + dir = RKISP1_DIR_SRC; + } else { + if (code->index > 0) + return -EINVAL; + code->code = MEDIA_BUS_FMT_FIXED; + return 0; + } + + if (code->index >= ARRAY_SIZE(rkisp1_isp_formats)) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(rkisp1_isp_formats); i++) { + const struct rkisp1_isp_mbus_info *fmt = &rkisp1_isp_formats[i]; + + if (fmt->direction & dir) + pos++; + + if (code->index == pos - 1) { + code->code = fmt->mbus_code; + return 0; + } + } + + return -EINVAL; +} + +static int rkisp1_isp_init_config(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg) +{ + struct v4l2_mbus_framefmt *sink_fmt, *src_fmt; + struct v4l2_rect *sink_crop, *src_crop; + + sink_fmt = v4l2_subdev_get_try_format(sd, cfg, + RKISP1_ISP_PAD_SINK_VIDEO); + sink_fmt->width = RKISP1_DEFAULT_WIDTH; + sink_fmt->height = RKISP1_DEFAULT_HEIGHT; + sink_fmt->field = V4L2_FIELD_NONE; + sink_fmt->code = RKISP1_DEF_SINK_PAD_FMT; + + sink_crop = v4l2_subdev_get_try_crop(sd, cfg, + RKISP1_ISP_PAD_SINK_VIDEO); + sink_crop->width = RKISP1_DEFAULT_WIDTH; + sink_crop->height = RKISP1_DEFAULT_HEIGHT; + sink_crop->left = 0; + sink_crop->top = 0; + + src_fmt = v4l2_subdev_get_try_format(sd, cfg, + RKISP1_ISP_PAD_SOURCE_VIDEO); + *src_fmt = *sink_fmt; + src_fmt->code = RKISP1_DEF_SRC_PAD_FMT; + src_fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; + + src_crop = v4l2_subdev_get_try_crop(sd, cfg, + RKISP1_ISP_PAD_SOURCE_VIDEO); + *src_crop = *sink_crop; + + sink_fmt = v4l2_subdev_get_try_format(sd, cfg, + RKISP1_ISP_PAD_SINK_PARAMS); + src_fmt = v4l2_subdev_get_try_format(sd, cfg, + RKISP1_ISP_PAD_SOURCE_STATS); + sink_fmt->width = RKISP1_DEFAULT_WIDTH; + sink_fmt->height = RKISP1_DEFAULT_HEIGHT; + sink_fmt->field = V4L2_FIELD_NONE; + sink_fmt->code = MEDIA_BUS_FMT_FIXED; + *src_fmt = *sink_fmt; + + return 0; +} + +static void rkisp1_isp_set_src_fmt(struct rkisp1_isp *isp, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_mbus_framefmt *format, + unsigned int which) +{ + const struct rkisp1_isp_mbus_info *mbus_info; + struct v4l2_mbus_framefmt *src_fmt; + const struct v4l2_rect *src_crop; + + src_fmt = rkisp1_isp_get_pad_fmt(isp, cfg, + RKISP1_ISP_PAD_SOURCE_VIDEO, which); + src_crop = rkisp1_isp_get_pad_crop(isp, cfg, + RKISP1_ISP_PAD_SOURCE_VIDEO, which); + + src_fmt->code = format->code; + mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code); + if (!mbus_info) { + src_fmt->code = RKISP1_DEF_SRC_PAD_FMT; + mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code); + } + if (which == V4L2_SUBDEV_FORMAT_ACTIVE) + isp->src_fmt = mbus_info; + src_fmt->width = src_crop->width; + src_fmt->height = src_crop->height; + src_fmt->quantization = format->quantization; + /* full range by default */ + if (!src_fmt->quantization) + src_fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; + + *format = *src_fmt; +} + +static void rkisp1_isp_set_src_crop(struct rkisp1_isp *isp, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_rect *r, unsigned int which) +{ + struct v4l2_mbus_framefmt *src_fmt; + const struct v4l2_rect *sink_crop; + struct v4l2_rect *src_crop; + + src_crop = rkisp1_isp_get_pad_crop(isp, cfg, + RKISP1_ISP_PAD_SOURCE_VIDEO, + which); + sink_crop = rkisp1_isp_get_pad_crop(isp, cfg, + RKISP1_ISP_PAD_SINK_VIDEO, + which); + + src_crop->left = ALIGN(r->left, 2); + src_crop->width = ALIGN(r->width, 2); + src_crop->top = r->top; + src_crop->height = r->height; + rkisp1_sd_adjust_crop_rect(src_crop, sink_crop); + + *r = *src_crop; + + /* Propagate to out format */ + src_fmt = rkisp1_isp_get_pad_fmt(isp, cfg, + RKISP1_ISP_PAD_SOURCE_VIDEO, which); + rkisp1_isp_set_src_fmt(isp, cfg, src_fmt, which); +} + +static void rkisp1_isp_set_sink_crop(struct rkisp1_isp *isp, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_rect *r, unsigned int which) +{ + struct v4l2_rect *sink_crop, *src_crop; + struct v4l2_mbus_framefmt *sink_fmt; + + sink_crop = rkisp1_isp_get_pad_crop(isp, cfg, RKISP1_ISP_PAD_SINK_VIDEO, + which); + sink_fmt = rkisp1_isp_get_pad_fmt(isp, cfg, RKISP1_ISP_PAD_SINK_VIDEO, + which); + + sink_crop->left = ALIGN(r->left, 2); + sink_crop->width = ALIGN(r->width, 2); + sink_crop->top = r->top; + sink_crop->height = r->height; + rkisp1_sd_adjust_crop(sink_crop, sink_fmt); + + *r = *sink_crop; + + /* Propagate to out crop */ + src_crop = rkisp1_isp_get_pad_crop(isp, cfg, + RKISP1_ISP_PAD_SOURCE_VIDEO, which); + rkisp1_isp_set_src_crop(isp, cfg, src_crop, which); +} + +static void rkisp1_isp_set_sink_fmt(struct rkisp1_isp *isp, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_mbus_framefmt *format, + unsigned int which) +{ + const struct rkisp1_isp_mbus_info *mbus_info; + struct v4l2_mbus_framefmt *sink_fmt; + struct v4l2_rect *sink_crop; + + sink_fmt = rkisp1_isp_get_pad_fmt(isp, cfg, RKISP1_ISP_PAD_SINK_VIDEO, + which); + sink_fmt->code = format->code; + mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code); + if (!mbus_info) { + sink_fmt->code = RKISP1_DEF_SINK_PAD_FMT; + mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code); + } + if (which == V4L2_SUBDEV_FORMAT_ACTIVE) + isp->sink_fmt = mbus_info; + + sink_fmt->width = clamp_t(u32, format->width, + RKISP1_ISP_MIN_WIDTH, + RKISP1_ISP_MAX_WIDTH); + sink_fmt->height = clamp_t(u32, format->height, + RKISP1_ISP_MIN_HEIGHT, + RKISP1_ISP_MAX_HEIGHT); + + *format = *sink_fmt; + + /* Propagate to in crop */ + sink_crop = rkisp1_isp_get_pad_crop(isp, cfg, RKISP1_ISP_PAD_SINK_VIDEO, + which); + rkisp1_isp_set_sink_crop(isp, cfg, sink_crop, which); +} + +static int rkisp1_isp_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd); + + fmt->format = *rkisp1_isp_get_pad_fmt(isp, cfg, fmt->pad, fmt->which); + return 0; +} + +static int rkisp1_isp_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd); + + if (fmt->pad == RKISP1_ISP_PAD_SINK_VIDEO) + rkisp1_isp_set_sink_fmt(isp, cfg, &fmt->format, fmt->which); + else if (fmt->pad == RKISP1_ISP_PAD_SOURCE_VIDEO) + rkisp1_isp_set_src_fmt(isp, cfg, &fmt->format, fmt->which); + else + fmt->format = *rkisp1_isp_get_pad_fmt(isp, cfg, fmt->pad, + fmt->which); + + return 0; +} + +static int rkisp1_isp_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd); + + if (sel->pad != RKISP1_ISP_PAD_SOURCE_VIDEO && + sel->pad != RKISP1_ISP_PAD_SINK_VIDEO) + return -EINVAL; + + switch (sel->target) { + case V4L2_SEL_TGT_CROP_BOUNDS: + if (sel->pad == RKISP1_ISP_PAD_SINK_VIDEO) { + struct v4l2_mbus_framefmt *fmt; + + fmt = rkisp1_isp_get_pad_fmt(isp, cfg, sel->pad, + sel->which); + sel->r.height = fmt->height; + sel->r.width = fmt->width; + sel->r.left = 0; + sel->r.top = 0; + } else { + sel->r = *rkisp1_isp_get_pad_crop(isp, cfg, + RKISP1_ISP_PAD_SINK_VIDEO, + sel->which); + } + break; + case V4L2_SEL_TGT_CROP: + sel->r = *rkisp1_isp_get_pad_crop(isp, cfg, sel->pad, + sel->which); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rkisp1_isp_set_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct rkisp1_device *rkisp1 = + container_of(sd->v4l2_dev, struct rkisp1_device, v4l2_dev); + struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd); + + if (sel->target != V4L2_SEL_TGT_CROP) + return -EINVAL; + + dev_dbg(rkisp1->dev, "%s: pad: %d sel(%d,%d)/%dx%d\n", __func__, + sel->pad, sel->r.left, sel->r.top, sel->r.width, sel->r.height); + + if (sel->pad == RKISP1_ISP_PAD_SINK_VIDEO) + rkisp1_isp_set_sink_crop(isp, cfg, &sel->r, sel->which); + else if (sel->pad == RKISP1_ISP_PAD_SOURCE_VIDEO) + rkisp1_isp_set_src_crop(isp, cfg, &sel->r, sel->which); + else + return -EINVAL; + + return 0; +} + +static int rkisp1_subdev_link_validate(struct media_link *link) +{ + if (link->sink->index == RKISP1_ISP_PAD_SINK_PARAMS) + return 0; + + return v4l2_subdev_link_validate(link); +} + +static const struct v4l2_subdev_pad_ops rkisp1_isp_pad_ops = { + .enum_mbus_code = rkisp1_isp_enum_mbus_code, + .get_selection = rkisp1_isp_get_selection, + .set_selection = rkisp1_isp_set_selection, + .init_cfg = rkisp1_isp_init_config, + .get_fmt = rkisp1_isp_get_fmt, + .set_fmt = rkisp1_isp_set_fmt, + .link_validate = v4l2_subdev_link_validate_default, +}; + +/* ---------------------------------------------------------------------------- + * Stream operations + */ + +static int rkisp1_mipi_csi2_start(struct rkisp1_isp *isp, + struct rkisp1_sensor_async *sensor) +{ + union phy_configure_opts opts; + struct phy_configure_opts_mipi_dphy *cfg = &opts.mipi_dphy; + s64 pixel_clock; + + if (!sensor->pixel_rate_ctrl) { + dev_warn(sensor->sd->dev, "No pixel rate control in subdev\n"); + return -EPIPE; + } + + pixel_clock = v4l2_ctrl_g_ctrl_int64(sensor->pixel_rate_ctrl); + if (!pixel_clock) { + dev_err(sensor->sd->dev, "Invalid pixel rate value\n"); + return -EINVAL; + } + + phy_mipi_dphy_get_default_config(pixel_clock, isp->sink_fmt->bus_width, + sensor->lanes, cfg); + phy_set_mode(sensor->dphy, PHY_MODE_MIPI_DPHY); + phy_configure(sensor->dphy, &opts); + phy_power_on(sensor->dphy); + + return 0; +} + +static void rkisp1_mipi_csi2_stop(struct rkisp1_sensor_async *sensor) +{ + phy_power_off(sensor->dphy); +} + +static int rkisp1_isp_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct rkisp1_device *rkisp1 = + container_of(sd->v4l2_dev, struct rkisp1_device, v4l2_dev); + struct v4l2_subdev *sensor_sd; + int ret = 0; + + if (!enable) { + ret = rkisp1_isp_stop(rkisp1); + if (ret) + return ret; + rkisp1_mipi_csi2_stop(rkisp1->active_sensor); + return 0; + } + + sensor_sd = rkisp1_get_remote_sensor(sd); + if (!sensor_sd) + return -ENODEV; + rkisp1->active_sensor = container_of(sensor_sd->asd, + struct rkisp1_sensor_async, asd); + + atomic_set(&rkisp1->isp.frame_sequence, -1); + ret = rkisp1_config_cif(rkisp1); + if (ret) + return ret; + + if (rkisp1->active_sensor->mbus.type != V4L2_MBUS_CSI2_DPHY) + return -EINVAL; + + ret = rkisp1_mipi_csi2_start(&rkisp1->isp, rkisp1->active_sensor); + if (ret) + return ret; + + ret = rkisp1_isp_start(rkisp1); + if (ret) + rkisp1_mipi_csi2_stop(rkisp1->active_sensor); + + return ret; +} + +static int rkisp1_isp_subs_evt(struct v4l2_subdev *sd, struct v4l2_fh *fh, + struct v4l2_event_subscription *sub) +{ + if (sub->type != V4L2_EVENT_FRAME_SYNC) + return -EINVAL; + + /* V4L2_EVENT_FRAME_SYNC doesn't require an id, so zero should be set */ + if (sub->id != 0) + return -EINVAL; + + return v4l2_event_subscribe(fh, sub, 0, NULL); +} + +static const struct media_entity_operations rkisp1_isp_media_ops = { + .link_validate = rkisp1_subdev_link_validate, +}; + +static const struct v4l2_subdev_video_ops rkisp1_isp_video_ops = { + .s_stream = rkisp1_isp_s_stream, +}; + +static const struct v4l2_subdev_core_ops rkisp1_isp_core_ops = { + .subscribe_event = rkisp1_isp_subs_evt, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +}; + +static const struct v4l2_subdev_ops rkisp1_isp_ops = { + .core = &rkisp1_isp_core_ops, + .video = &rkisp1_isp_video_ops, + .pad = &rkisp1_isp_pad_ops, +}; + +int rkisp1_isp_register(struct rkisp1_device *rkisp1, + struct v4l2_device *v4l2_dev) +{ + struct rkisp1_isp *isp = &rkisp1->isp; + struct media_pad *pads = isp->pads; + struct v4l2_subdev *sd = &isp->sd; + int ret; + + v4l2_subdev_init(sd, &rkisp1_isp_ops); + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; + sd->entity.ops = &rkisp1_isp_media_ops; + sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER; + sd->owner = THIS_MODULE; + strscpy(sd->name, RKISP1_ISP_DEV_NAME, sizeof(sd->name)); + + pads[RKISP1_ISP_PAD_SINK_VIDEO].flags = MEDIA_PAD_FL_SINK | + MEDIA_PAD_FL_MUST_CONNECT; + pads[RKISP1_ISP_PAD_SINK_PARAMS].flags = MEDIA_PAD_FL_SINK; + pads[RKISP1_ISP_PAD_SOURCE_VIDEO].flags = MEDIA_PAD_FL_SOURCE; + pads[RKISP1_ISP_PAD_SOURCE_STATS].flags = MEDIA_PAD_FL_SOURCE; + + isp->sink_fmt = rkisp1_isp_mbus_info_get(RKISP1_DEF_SINK_PAD_FMT); + isp->src_fmt = rkisp1_isp_mbus_info_get(RKISP1_DEF_SRC_PAD_FMT); + + ret = media_entity_pads_init(&sd->entity, RKISP1_ISP_PAD_MAX, pads); + if (ret) + return ret; + + ret = v4l2_device_register_subdev(v4l2_dev, sd); + if (ret) { + dev_err(sd->dev, "Failed to register isp subdev\n"); + goto err_cleanup_media_entity; + } + + rkisp1_isp_init_config(sd, rkisp1->isp.pad_cfg); + return 0; + +err_cleanup_media_entity: + media_entity_cleanup(&sd->entity); + + return ret; +} + +void rkisp1_isp_unregister(struct rkisp1_device *rkisp1) +{ + struct v4l2_subdev *sd = &rkisp1->isp.sd; + + v4l2_device_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); +} + +/* ---------------------------------------------------------------------------- + * Interrupt handlers + */ + +void rkisp1_mipi_isr(struct rkisp1_device *rkisp1) +{ + u32 val, status; + + status = rkisp1_read(rkisp1, RKISP1_CIF_MIPI_MIS); + if (!status) + return; + + rkisp1_write(rkisp1, status, RKISP1_CIF_MIPI_ICR); + + /* + * Disable DPHY errctrl interrupt, because this dphy + * erctrl signal is asserted until the next changes + * of line state. This time is may be too long and cpu + * is hold in this interrupt. + */ + if (status & RKISP1_CIF_MIPI_ERR_CTRL(0x0f)) { + val = rkisp1_read(rkisp1, RKISP1_CIF_MIPI_IMSC); + rkisp1_write(rkisp1, val & ~RKISP1_CIF_MIPI_ERR_CTRL(0x0f), + RKISP1_CIF_MIPI_IMSC); + rkisp1->isp.is_dphy_errctrl_disabled = true; + } + + /* + * Enable DPHY errctrl interrupt again, if mipi have receive + * the whole frame without any error. + */ + if (status == RKISP1_CIF_MIPI_FRAME_END) { + /* + * Enable DPHY errctrl interrupt again, if mipi have receive + * the whole frame without any error. + */ + if (rkisp1->isp.is_dphy_errctrl_disabled) { + val = rkisp1_read(rkisp1, RKISP1_CIF_MIPI_IMSC); + val |= RKISP1_CIF_MIPI_ERR_CTRL(0x0f); + rkisp1_write(rkisp1, val, RKISP1_CIF_MIPI_IMSC); + rkisp1->isp.is_dphy_errctrl_disabled = false; + } + } else { + rkisp1->debug.mipi_error++; + } +} + +static void rkisp1_isp_queue_event_sof(struct rkisp1_isp *isp) +{ + struct v4l2_event event = { + .type = V4L2_EVENT_FRAME_SYNC, + }; + + /* + * Increment the frame sequence on the vsync signal. + * This will allow applications to detect dropped. + * Note that there is a debugfs counter for dropped + * frames, but using this event is more accurate. + */ + event.u.frame_sync.frame_sequence = + atomic_inc_return(&isp->frame_sequence); + v4l2_event_queue(isp->sd.devnode, &event); +} + +void rkisp1_isp_isr(struct rkisp1_device *rkisp1) +{ + u32 status, isp_err; + + status = rkisp1_read(rkisp1, RKISP1_CIF_ISP_MIS); + if (!status) + return; + + rkisp1_write(rkisp1, status, RKISP1_CIF_ISP_ICR); + + /* Vertical sync signal, starting generating new frame */ + if (status & RKISP1_CIF_ISP_V_START) + rkisp1_isp_queue_event_sof(&rkisp1->isp); + + if (status & RKISP1_CIF_ISP_PIC_SIZE_ERROR) { + /* Clear pic_size_error */ + isp_err = rkisp1_read(rkisp1, RKISP1_CIF_ISP_ERR); + rkisp1_write(rkisp1, isp_err, RKISP1_CIF_ISP_ERR_CLR); + rkisp1->debug.pic_size_error++; + } else if (status & RKISP1_CIF_ISP_DATA_LOSS) { + /* keep track of data_loss in debugfs */ + rkisp1->debug.data_loss++; + } + + if (status & RKISP1_CIF_ISP_FRAME) { + u32 isp_ris; + + /* New frame from the sensor received */ + isp_ris = rkisp1_read(rkisp1, RKISP1_CIF_ISP_RIS); + if (isp_ris & (RKISP1_CIF_ISP_AWB_DONE | + RKISP1_CIF_ISP_AFM_FIN | + RKISP1_CIF_ISP_EXP_END | + RKISP1_CIF_ISP_HIST_MEASURE_RDY)) + rkisp1_stats_isr(&rkisp1->stats, isp_ris); + } + + /* + * Then update changed configs. Some of them involve + * lot of register writes. Do those only one per frame. + * Do the updates in the order of the processing flow. + */ + rkisp1_params_isr(rkisp1, status); +} |