diff options
Diffstat (limited to 'drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c')
| -rw-r--r-- | drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 817 |
1 files changed, 817 insertions, 0 deletions
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c new file mode 100644 index 0000000000..c15ae02181 --- /dev/null +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c @@ -0,0 +1,817 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Rockchip ISP1 Driver - V4l resizer device + * + * Copyright (C) 2019 Collabora, Ltd. + * + * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd. + * Copyright (C) 2017 Rockchip Electronics Co., Ltd. + */ + +#include "rkisp1-common.h" + +#define RKISP1_RSZ_SP_DEV_NAME RKISP1_DRIVER_NAME "_resizer_selfpath" +#define RKISP1_RSZ_MP_DEV_NAME RKISP1_DRIVER_NAME "_resizer_mainpath" + +#define RKISP1_DEF_FMT MEDIA_BUS_FMT_YUYV8_2X8 +#define RKISP1_DEF_PIXEL_ENC V4L2_PIXEL_ENC_YUV + +struct rkisp1_rsz_yuv_mbus_info { + u32 mbus_code; + u32 hdiv; + u32 vdiv; +}; + +static const struct rkisp1_rsz_yuv_mbus_info rkisp1_rsz_yuv_src_formats[] = { + { + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8, /* YUV422 */ + .hdiv = 2, + .vdiv = 1, + }, + { + .mbus_code = MEDIA_BUS_FMT_YUYV8_1_5X8, /* YUV420 */ + .hdiv = 2, + .vdiv = 2, + }, +}; + +static const struct rkisp1_rsz_yuv_mbus_info *rkisp1_rsz_get_yuv_mbus_info(u32 mbus_code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(rkisp1_rsz_yuv_src_formats); i++) { + if (rkisp1_rsz_yuv_src_formats[i].mbus_code == mbus_code) + return &rkisp1_rsz_yuv_src_formats[i]; + } + + return NULL; +} + +enum rkisp1_shadow_regs_when { + RKISP1_SHADOW_REGS_SYNC, + RKISP1_SHADOW_REGS_ASYNC, +}; + +struct rkisp1_rsz_config { + /* constrains */ + const int max_rsz_width; + const int max_rsz_height; + const int min_rsz_width; + const int min_rsz_height; + /* registers */ + struct { + u32 ctrl; + u32 yuvmode_mask; + u32 rawmode_mask; + u32 h_offset; + u32 v_offset; + u32 h_size; + u32 v_size; + } dual_crop; +}; + +static const struct rkisp1_rsz_config rkisp1_rsz_config_mp = { + /* constraints */ + .max_rsz_width = RKISP1_RSZ_MP_SRC_MAX_WIDTH, + .max_rsz_height = RKISP1_RSZ_MP_SRC_MAX_HEIGHT, + .min_rsz_width = RKISP1_RSZ_SRC_MIN_WIDTH, + .min_rsz_height = RKISP1_RSZ_SRC_MIN_HEIGHT, + /* registers */ + .dual_crop = { + .ctrl = RKISP1_CIF_DUAL_CROP_CTRL, + .yuvmode_mask = RKISP1_CIF_DUAL_CROP_MP_MODE_YUV, + .rawmode_mask = RKISP1_CIF_DUAL_CROP_MP_MODE_RAW, + .h_offset = RKISP1_CIF_DUAL_CROP_M_H_OFFS, + .v_offset = RKISP1_CIF_DUAL_CROP_M_V_OFFS, + .h_size = RKISP1_CIF_DUAL_CROP_M_H_SIZE, + .v_size = RKISP1_CIF_DUAL_CROP_M_V_SIZE, + }, +}; + +static const struct rkisp1_rsz_config rkisp1_rsz_config_sp = { + /* constraints */ + .max_rsz_width = RKISP1_RSZ_SP_SRC_MAX_WIDTH, + .max_rsz_height = RKISP1_RSZ_SP_SRC_MAX_HEIGHT, + .min_rsz_width = RKISP1_RSZ_SRC_MIN_WIDTH, + .min_rsz_height = RKISP1_RSZ_SRC_MIN_HEIGHT, + /* registers */ + .dual_crop = { + .ctrl = RKISP1_CIF_DUAL_CROP_CTRL, + .yuvmode_mask = RKISP1_CIF_DUAL_CROP_SP_MODE_YUV, + .rawmode_mask = RKISP1_CIF_DUAL_CROP_SP_MODE_RAW, + .h_offset = RKISP1_CIF_DUAL_CROP_S_H_OFFS, + .v_offset = RKISP1_CIF_DUAL_CROP_S_V_OFFS, + .h_size = RKISP1_CIF_DUAL_CROP_S_H_SIZE, + .v_size = RKISP1_CIF_DUAL_CROP_S_V_SIZE, + }, +}; + +static inline u32 rkisp1_rsz_read(struct rkisp1_resizer *rsz, u32 offset) +{ + return rkisp1_read(rsz->rkisp1, rsz->regs_base + offset); +} + +static inline void rkisp1_rsz_write(struct rkisp1_resizer *rsz, u32 offset, + u32 value) +{ + rkisp1_write(rsz->rkisp1, rsz->regs_base + offset, value); +} + +static struct v4l2_mbus_framefmt * +rkisp1_rsz_get_pad_fmt(struct rkisp1_resizer *rsz, + struct v4l2_subdev_state *sd_state, + unsigned int pad, u32 which) +{ + struct v4l2_subdev_state state = { + .pads = rsz->pad_cfg, + }; + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_format(&rsz->sd, sd_state, pad); + else + return v4l2_subdev_get_try_format(&rsz->sd, &state, pad); +} + +static struct v4l2_rect * +rkisp1_rsz_get_pad_crop(struct rkisp1_resizer *rsz, + struct v4l2_subdev_state *sd_state, + unsigned int pad, u32 which) +{ + struct v4l2_subdev_state state = { + .pads = rsz->pad_cfg, + }; + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_crop(&rsz->sd, sd_state, pad); + else + return v4l2_subdev_get_try_crop(&rsz->sd, &state, pad); +} + +/* ---------------------------------------------------------------------------- + * Dual crop hw configs + */ + +static void rkisp1_dcrop_disable(struct rkisp1_resizer *rsz, + enum rkisp1_shadow_regs_when when) +{ + u32 dc_ctrl = rkisp1_read(rsz->rkisp1, rsz->config->dual_crop.ctrl); + u32 mask = ~(rsz->config->dual_crop.yuvmode_mask | + rsz->config->dual_crop.rawmode_mask); + + dc_ctrl &= mask; + if (when == RKISP1_SHADOW_REGS_ASYNC) + dc_ctrl |= RKISP1_CIF_DUAL_CROP_GEN_CFG_UPD; + else + dc_ctrl |= RKISP1_CIF_DUAL_CROP_CFG_UPD; + rkisp1_write(rsz->rkisp1, rsz->config->dual_crop.ctrl, dc_ctrl); +} + +/* configure dual-crop unit */ +static void rkisp1_dcrop_config(struct rkisp1_resizer *rsz) +{ + struct rkisp1_device *rkisp1 = rsz->rkisp1; + struct v4l2_mbus_framefmt *sink_fmt; + struct v4l2_rect *sink_crop; + u32 dc_ctrl; + + sink_crop = rkisp1_rsz_get_pad_crop(rsz, NULL, RKISP1_RSZ_PAD_SINK, + V4L2_SUBDEV_FORMAT_ACTIVE); + sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, NULL, RKISP1_RSZ_PAD_SINK, + V4L2_SUBDEV_FORMAT_ACTIVE); + + if (sink_crop->width == sink_fmt->width && + sink_crop->height == sink_fmt->height && + sink_crop->left == 0 && sink_crop->top == 0) { + rkisp1_dcrop_disable(rsz, RKISP1_SHADOW_REGS_SYNC); + dev_dbg(rkisp1->dev, "capture %d crop disabled\n", rsz->id); + return; + } + + dc_ctrl = rkisp1_read(rkisp1, rsz->config->dual_crop.ctrl); + rkisp1_write(rkisp1, rsz->config->dual_crop.h_offset, sink_crop->left); + rkisp1_write(rkisp1, rsz->config->dual_crop.v_offset, sink_crop->top); + rkisp1_write(rkisp1, rsz->config->dual_crop.h_size, sink_crop->width); + rkisp1_write(rkisp1, rsz->config->dual_crop.v_size, sink_crop->height); + dc_ctrl |= rsz->config->dual_crop.yuvmode_mask; + dc_ctrl |= RKISP1_CIF_DUAL_CROP_CFG_UPD; + rkisp1_write(rkisp1, rsz->config->dual_crop.ctrl, dc_ctrl); + + dev_dbg(rkisp1->dev, "stream %d crop: %dx%d -> %dx%d\n", rsz->id, + sink_fmt->width, sink_fmt->height, + sink_crop->width, sink_crop->height); +} + +/* ---------------------------------------------------------------------------- + * Resizer hw configs + */ + +static void rkisp1_rsz_update_shadow(struct rkisp1_resizer *rsz, + enum rkisp1_shadow_regs_when when) +{ + u32 ctrl_cfg = rkisp1_rsz_read(rsz, RKISP1_CIF_RSZ_CTRL); + + if (when == RKISP1_SHADOW_REGS_ASYNC) + ctrl_cfg |= RKISP1_CIF_RSZ_CTRL_CFG_UPD_AUTO; + else + ctrl_cfg |= RKISP1_CIF_RSZ_CTRL_CFG_UPD; + + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_CTRL, ctrl_cfg); +} + +static u32 rkisp1_rsz_calc_ratio(u32 len_sink, u32 len_src) +{ + if (len_sink < len_src) + return ((len_sink - 1) * RKISP1_CIF_RSZ_SCALER_FACTOR) / + (len_src - 1); + + return ((len_src - 1) * RKISP1_CIF_RSZ_SCALER_FACTOR) / + (len_sink - 1) + 1; +} + +static void rkisp1_rsz_disable(struct rkisp1_resizer *rsz, + enum rkisp1_shadow_regs_when when) +{ + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_CTRL, 0); + + if (when == RKISP1_SHADOW_REGS_SYNC) + rkisp1_rsz_update_shadow(rsz, when); +} + +static void rkisp1_rsz_config_regs(struct rkisp1_resizer *rsz, + struct v4l2_rect *sink_y, + struct v4l2_rect *sink_c, + struct v4l2_rect *src_y, + struct v4l2_rect *src_c, + enum rkisp1_shadow_regs_when when) +{ + u32 ratio, rsz_ctrl = 0; + unsigned int i; + + /* No phase offset */ + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_PHASE_HY, 0); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_PHASE_HC, 0); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_PHASE_VY, 0); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_PHASE_VC, 0); + + /* Linear interpolation */ + for (i = 0; i < 64; i++) { + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_SCALE_LUT_ADDR, i); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_SCALE_LUT, i); + } + + if (sink_y->width != src_y->width) { + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_HY_ENABLE; + if (sink_y->width < src_y->width) + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_HY_UP; + ratio = rkisp1_rsz_calc_ratio(sink_y->width, src_y->width); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_SCALE_HY, ratio); + } + + if (sink_c->width != src_c->width) { + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_HC_ENABLE; + if (sink_c->width < src_c->width) + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_HC_UP; + ratio = rkisp1_rsz_calc_ratio(sink_c->width, src_c->width); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_SCALE_HCB, ratio); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_SCALE_HCR, ratio); + } + + if (sink_y->height != src_y->height) { + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_VY_ENABLE; + if (sink_y->height < src_y->height) + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_VY_UP; + ratio = rkisp1_rsz_calc_ratio(sink_y->height, src_y->height); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_SCALE_VY, ratio); + } + + if (sink_c->height != src_c->height) { + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_VC_ENABLE; + if (sink_c->height < src_c->height) + rsz_ctrl |= RKISP1_CIF_RSZ_CTRL_SCALE_VC_UP; + ratio = rkisp1_rsz_calc_ratio(sink_c->height, src_c->height); + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_SCALE_VC, ratio); + } + + rkisp1_rsz_write(rsz, RKISP1_CIF_RSZ_CTRL, rsz_ctrl); + + rkisp1_rsz_update_shadow(rsz, when); +} + +static void rkisp1_rsz_config(struct rkisp1_resizer *rsz, + enum rkisp1_shadow_regs_when when) +{ + const struct rkisp1_rsz_yuv_mbus_info *sink_yuv_info, *src_yuv_info; + struct v4l2_rect sink_y, sink_c, src_y, src_c; + struct v4l2_mbus_framefmt *src_fmt, *sink_fmt; + struct v4l2_rect *sink_crop; + + sink_crop = rkisp1_rsz_get_pad_crop(rsz, NULL, RKISP1_RSZ_PAD_SINK, + V4L2_SUBDEV_FORMAT_ACTIVE); + src_fmt = rkisp1_rsz_get_pad_fmt(rsz, NULL, RKISP1_RSZ_PAD_SRC, + V4L2_SUBDEV_FORMAT_ACTIVE); + src_yuv_info = rkisp1_rsz_get_yuv_mbus_info(src_fmt->code); + sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, NULL, RKISP1_RSZ_PAD_SINK, + V4L2_SUBDEV_FORMAT_ACTIVE); + sink_yuv_info = rkisp1_rsz_get_yuv_mbus_info(sink_fmt->code); + + /* + * The resizer only works on yuv formats, + * so return if it is bayer format. + */ + if (rsz->pixel_enc == V4L2_PIXEL_ENC_BAYER) { + rkisp1_rsz_disable(rsz, when); + return; + } + + sink_y.width = sink_crop->width; + sink_y.height = sink_crop->height; + src_y.width = src_fmt->width; + src_y.height = src_fmt->height; + + sink_c.width = sink_y.width / sink_yuv_info->hdiv; + sink_c.height = sink_y.height / sink_yuv_info->vdiv; + + /* + * The resizer is used not only to change the dimensions of the frame + * but also to change the scale for YUV formats, + * (4:2:2 -> 4:2:0 for example). So the width/height of the CbCr + * streams should be set according to the media bus format in the src pad. + */ + src_c.width = src_y.width / src_yuv_info->hdiv; + src_c.height = src_y.height / src_yuv_info->vdiv; + + if (sink_c.width == src_c.width && sink_c.height == src_c.height) { + rkisp1_rsz_disable(rsz, when); + return; + } + + dev_dbg(rsz->rkisp1->dev, "stream %d rsz/scale: %dx%d -> %dx%d\n", + rsz->id, sink_crop->width, sink_crop->height, + src_fmt->width, src_fmt->height); + dev_dbg(rsz->rkisp1->dev, "chroma scaling %dx%d -> %dx%d\n", + sink_c.width, sink_c.height, src_c.width, src_c.height); + + /* set values in the hw */ + rkisp1_rsz_config_regs(rsz, &sink_y, &sink_c, &src_y, &src_c, when); +} + +/* ---------------------------------------------------------------------------- + * Subdev pad operations + */ + +static int rkisp1_rsz_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct rkisp1_resizer *rsz = + container_of(sd, struct rkisp1_resizer, sd); + struct v4l2_subdev_pad_config dummy_cfg; + struct v4l2_subdev_state pad_state = { + .pads = &dummy_cfg + }; + u32 pad = code->pad; + int ret; + + if (code->pad == RKISP1_RSZ_PAD_SRC) { + /* supported mbus codes on the src are the same as in the capture */ + struct rkisp1_capture *cap = &rsz->rkisp1->capture_devs[rsz->id]; + + return rkisp1_cap_enum_mbus_codes(cap, code); + } + + /* + * The selfpath capture doesn't support bayer formats. Therefore the selfpath resizer + * should support only YUV422 on the sink pad + */ + if (rsz->id == RKISP1_SELFPATH) { + if (code->index > 0) + return -EINVAL; + code->code = MEDIA_BUS_FMT_YUYV8_2X8; + return 0; + } + + /* supported mbus codes on the sink pad are the same as isp src pad */ + code->pad = RKISP1_ISP_PAD_SOURCE_VIDEO; + ret = v4l2_subdev_call(&rsz->rkisp1->isp.sd, pad, enum_mbus_code, + &pad_state, code); + + /* restore pad */ + code->pad = pad; + code->flags = 0; + return ret; +} + +static int rkisp1_rsz_init_config(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state) +{ + struct v4l2_mbus_framefmt *sink_fmt, *src_fmt; + struct v4l2_rect *sink_crop; + + sink_fmt = v4l2_subdev_get_try_format(sd, sd_state, + RKISP1_RSZ_PAD_SRC); + sink_fmt->width = RKISP1_DEFAULT_WIDTH; + sink_fmt->height = RKISP1_DEFAULT_HEIGHT; + sink_fmt->field = V4L2_FIELD_NONE; + sink_fmt->code = RKISP1_DEF_FMT; + sink_fmt->colorspace = V4L2_COLORSPACE_SRGB; + sink_fmt->xfer_func = V4L2_XFER_FUNC_SRGB; + sink_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601; + sink_fmt->quantization = V4L2_QUANTIZATION_LIM_RANGE; + + sink_crop = v4l2_subdev_get_try_crop(sd, sd_state, + RKISP1_RSZ_PAD_SINK); + 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, sd_state, + RKISP1_RSZ_PAD_SINK); + *src_fmt = *sink_fmt; + + /* NOTE: there is no crop in the source pad, only in the sink */ + + return 0; +} + +static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz, + struct v4l2_subdev_state *sd_state, + struct v4l2_mbus_framefmt *format, + unsigned int which) +{ + const struct rkisp1_mbus_info *sink_mbus_info; + struct v4l2_mbus_framefmt *src_fmt, *sink_fmt; + + sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SINK, + which); + src_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SRC, + which); + sink_mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code); + + /* for YUV formats, userspace can change the mbus code on the src pad if it is supported */ + if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV && + rkisp1_rsz_get_yuv_mbus_info(format->code)) + src_fmt->code = format->code; + + src_fmt->width = clamp_t(u32, format->width, + rsz->config->min_rsz_width, + rsz->config->max_rsz_width); + src_fmt->height = clamp_t(u32, format->height, + rsz->config->min_rsz_height, + rsz->config->max_rsz_height); + + *format = *src_fmt; +} + +static void rkisp1_rsz_set_sink_crop(struct rkisp1_resizer *rsz, + struct v4l2_subdev_state *sd_state, + struct v4l2_rect *r, + unsigned int which) +{ + const struct rkisp1_mbus_info *mbus_info; + struct v4l2_mbus_framefmt *sink_fmt; + struct v4l2_rect *sink_crop; + + sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SINK, + which); + sink_crop = rkisp1_rsz_get_pad_crop(rsz, sd_state, + RKISP1_RSZ_PAD_SINK, + which); + + /* Not crop for MP bayer raw data */ + mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code); + + if (rsz->id == RKISP1_MAINPATH && + mbus_info->pixel_enc == V4L2_PIXEL_ENC_BAYER) { + sink_crop->left = 0; + sink_crop->top = 0; + sink_crop->width = sink_fmt->width; + sink_crop->height = sink_fmt->height; + + *r = *sink_crop; + return; + } + + 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; +} + +static void rkisp1_rsz_set_sink_fmt(struct rkisp1_resizer *rsz, + struct v4l2_subdev_state *sd_state, + struct v4l2_mbus_framefmt *format, + unsigned int which) +{ + const struct rkisp1_mbus_info *mbus_info; + struct v4l2_mbus_framefmt *sink_fmt, *src_fmt; + struct v4l2_rect *sink_crop; + bool is_yuv; + + sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SINK, + which); + src_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SRC, + which); + sink_crop = rkisp1_rsz_get_pad_crop(rsz, sd_state, + RKISP1_RSZ_PAD_SINK, + which); + if (rsz->id == RKISP1_SELFPATH) + sink_fmt->code = MEDIA_BUS_FMT_YUYV8_2X8; + else + sink_fmt->code = format->code; + + mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code); + if (!mbus_info || !(mbus_info->direction & RKISP1_ISP_SD_SRC)) { + sink_fmt->code = RKISP1_DEF_FMT; + mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code); + } + if (which == V4L2_SUBDEV_FORMAT_ACTIVE) + rsz->pixel_enc = mbus_info->pixel_enc; + + 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); + + /* + * Adjust the color space fields. Accept any color primaries and + * transfer function for both YUV and Bayer. For YUV any YCbCr encoding + * and quantization range is also accepted. For Bayer formats, the YCbCr + * encoding isn't applicable, and the quantization range can only be + * full. + */ + is_yuv = mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV; + + sink_fmt->colorspace = format->colorspace ? : + (is_yuv ? V4L2_COLORSPACE_SRGB : + V4L2_COLORSPACE_RAW); + sink_fmt->xfer_func = format->xfer_func ? : + V4L2_MAP_XFER_FUNC_DEFAULT(sink_fmt->colorspace); + if (is_yuv) { + sink_fmt->ycbcr_enc = format->ycbcr_enc ? : + V4L2_MAP_YCBCR_ENC_DEFAULT(sink_fmt->colorspace); + sink_fmt->quantization = format->quantization ? : + V4L2_MAP_QUANTIZATION_DEFAULT(false, sink_fmt->colorspace, + sink_fmt->ycbcr_enc); + } else { + /* + * The YCbCr encoding isn't applicable for non-YUV formats, but + * V4L2 has no "no encoding" value. Hardcode it to Rec. 601, it + * should be ignored by userspace. + */ + sink_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601; + sink_fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; + } + + *format = *sink_fmt; + + /* Propagate the media bus code and color space to the source pad. */ + src_fmt->code = sink_fmt->code; + src_fmt->colorspace = sink_fmt->colorspace; + src_fmt->xfer_func = sink_fmt->xfer_func; + src_fmt->ycbcr_enc = sink_fmt->ycbcr_enc; + src_fmt->quantization = sink_fmt->quantization; + + /* Update sink crop */ + rkisp1_rsz_set_sink_crop(rsz, sd_state, sink_crop, which); +} + +static int rkisp1_rsz_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct rkisp1_resizer *rsz = + container_of(sd, struct rkisp1_resizer, sd); + + mutex_lock(&rsz->ops_lock); + fmt->format = *rkisp1_rsz_get_pad_fmt(rsz, sd_state, fmt->pad, + fmt->which); + mutex_unlock(&rsz->ops_lock); + return 0; +} + +static int rkisp1_rsz_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct rkisp1_resizer *rsz = + container_of(sd, struct rkisp1_resizer, sd); + + mutex_lock(&rsz->ops_lock); + if (fmt->pad == RKISP1_RSZ_PAD_SINK) + rkisp1_rsz_set_sink_fmt(rsz, sd_state, &fmt->format, + fmt->which); + else + rkisp1_rsz_set_src_fmt(rsz, sd_state, &fmt->format, + fmt->which); + + mutex_unlock(&rsz->ops_lock); + return 0; +} + +static int rkisp1_rsz_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + struct rkisp1_resizer *rsz = + container_of(sd, struct rkisp1_resizer, sd); + struct v4l2_mbus_framefmt *mf_sink; + int ret = 0; + + if (sel->pad == RKISP1_RSZ_PAD_SRC) + return -EINVAL; + + mutex_lock(&rsz->ops_lock); + switch (sel->target) { + case V4L2_SEL_TGT_CROP_BOUNDS: + mf_sink = rkisp1_rsz_get_pad_fmt(rsz, sd_state, + RKISP1_RSZ_PAD_SINK, + sel->which); + sel->r.height = mf_sink->height; + sel->r.width = mf_sink->width; + sel->r.left = 0; + sel->r.top = 0; + break; + case V4L2_SEL_TGT_CROP: + sel->r = *rkisp1_rsz_get_pad_crop(rsz, sd_state, + RKISP1_RSZ_PAD_SINK, + sel->which); + break; + default: + ret = -EINVAL; + } + + mutex_unlock(&rsz->ops_lock); + return ret; +} + +static int rkisp1_rsz_set_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + struct rkisp1_resizer *rsz = + container_of(sd, struct rkisp1_resizer, sd); + + if (sel->target != V4L2_SEL_TGT_CROP || sel->pad == RKISP1_RSZ_PAD_SRC) + return -EINVAL; + + dev_dbg(rsz->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); + + mutex_lock(&rsz->ops_lock); + rkisp1_rsz_set_sink_crop(rsz, sd_state, &sel->r, sel->which); + mutex_unlock(&rsz->ops_lock); + + return 0; +} + +static const struct media_entity_operations rkisp1_rsz_media_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +static const struct v4l2_subdev_pad_ops rkisp1_rsz_pad_ops = { + .enum_mbus_code = rkisp1_rsz_enum_mbus_code, + .get_selection = rkisp1_rsz_get_selection, + .set_selection = rkisp1_rsz_set_selection, + .init_cfg = rkisp1_rsz_init_config, + .get_fmt = rkisp1_rsz_get_fmt, + .set_fmt = rkisp1_rsz_set_fmt, + .link_validate = v4l2_subdev_link_validate_default, +}; + +/* ---------------------------------------------------------------------------- + * Stream operations + */ + +static int rkisp1_rsz_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct rkisp1_resizer *rsz = + container_of(sd, struct rkisp1_resizer, sd); + struct rkisp1_device *rkisp1 = rsz->rkisp1; + struct rkisp1_capture *other = &rkisp1->capture_devs[rsz->id ^ 1]; + enum rkisp1_shadow_regs_when when = RKISP1_SHADOW_REGS_SYNC; + + if (!enable) { + rkisp1_dcrop_disable(rsz, RKISP1_SHADOW_REGS_ASYNC); + rkisp1_rsz_disable(rsz, RKISP1_SHADOW_REGS_ASYNC); + return 0; + } + + if (other->is_streaming) + when = RKISP1_SHADOW_REGS_ASYNC; + + mutex_lock(&rsz->ops_lock); + rkisp1_rsz_config(rsz, when); + rkisp1_dcrop_config(rsz); + + mutex_unlock(&rsz->ops_lock); + return 0; +} + +static const struct v4l2_subdev_video_ops rkisp1_rsz_video_ops = { + .s_stream = rkisp1_rsz_s_stream, +}; + +static const struct v4l2_subdev_ops rkisp1_rsz_ops = { + .video = &rkisp1_rsz_video_ops, + .pad = &rkisp1_rsz_pad_ops, +}; + +static void rkisp1_rsz_unregister(struct rkisp1_resizer *rsz) +{ + if (!rsz->rkisp1) + return; + + v4l2_device_unregister_subdev(&rsz->sd); + media_entity_cleanup(&rsz->sd.entity); + mutex_destroy(&rsz->ops_lock); +} + +static int rkisp1_rsz_register(struct rkisp1_resizer *rsz) +{ + struct v4l2_subdev_state state = { + .pads = rsz->pad_cfg, + }; + static const char * const dev_names[] = { + RKISP1_RSZ_MP_DEV_NAME, + RKISP1_RSZ_SP_DEV_NAME + }; + struct media_pad *pads = rsz->pads; + struct v4l2_subdev *sd = &rsz->sd; + int ret; + + if (rsz->id == RKISP1_SELFPATH) { + rsz->regs_base = RKISP1_CIF_SRSZ_BASE; + rsz->config = &rkisp1_rsz_config_sp; + } else { + rsz->regs_base = RKISP1_CIF_MRSZ_BASE; + rsz->config = &rkisp1_rsz_config_mp; + } + + v4l2_subdev_init(sd, &rkisp1_rsz_ops); + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + sd->entity.ops = &rkisp1_rsz_media_ops; + sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER; + sd->owner = THIS_MODULE; + strscpy(sd->name, dev_names[rsz->id], sizeof(sd->name)); + + pads[RKISP1_RSZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK | + MEDIA_PAD_FL_MUST_CONNECT; + pads[RKISP1_RSZ_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE | + MEDIA_PAD_FL_MUST_CONNECT; + + rsz->pixel_enc = RKISP1_DEF_PIXEL_ENC; + + mutex_init(&rsz->ops_lock); + ret = media_entity_pads_init(&sd->entity, RKISP1_RSZ_PAD_MAX, pads); + if (ret) + goto error; + + ret = v4l2_device_register_subdev(&rsz->rkisp1->v4l2_dev, sd); + if (ret) { + dev_err(sd->dev, "Failed to register resizer subdev\n"); + goto error; + } + + rkisp1_rsz_init_config(sd, &state); + return 0; + +error: + media_entity_cleanup(&sd->entity); + mutex_destroy(&rsz->ops_lock); + return ret; +} + +int rkisp1_resizer_devs_register(struct rkisp1_device *rkisp1) +{ + unsigned int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(rkisp1->resizer_devs); i++) { + struct rkisp1_resizer *rsz = &rkisp1->resizer_devs[i]; + + rsz->rkisp1 = rkisp1; + rsz->id = i; + + ret = rkisp1_rsz_register(rsz); + if (ret) { + rsz->rkisp1 = NULL; + rkisp1_resizer_devs_unregister(rkisp1); + return ret; + } + } + + return 0; +} + +void rkisp1_resizer_devs_unregister(struct rkisp1_device *rkisp1) +{ + struct rkisp1_resizer *mp = &rkisp1->resizer_devs[RKISP1_MAINPATH]; + struct rkisp1_resizer *sp = &rkisp1->resizer_devs[RKISP1_SELFPATH]; + + rkisp1_rsz_unregister(mp); + rkisp1_rsz_unregister(sp); +} |