From: Wenmeng Liu Date: Tue, 17 Mar 2026 10:05:45 +0000 (+0800) Subject: media: qcom: camss: Add common TPG support X-Git-Tag: v7.2-rc1~101^2~285 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70b193987c8c025618b6dea7303e7972053e9313;p=thirdparty%2Fkernel%2Flinux.git media: qcom: camss: Add common TPG support Introduce a new common Test Pattern Generator (TPG) implementation for Qualcomm CAMSS. This module provides a generic interface for pattern generation that can be reused by multiple platforms. Unlike CSID-integrated TPG, this TPG acts as a standalone block that emulates both CSIPHY and sensor behavior, enabling flexible test patterns without external hardware. Signed-off-by: Wenmeng Liu Reviewed-by: Bryan O'Donoghue Tested-by: Bryan O'Donoghue # Dell Inpsiron14p Signed-off-by: Bryan O'Donoghue --- diff --git a/drivers/media/platform/qcom/camss/Makefile b/drivers/media/platform/qcom/camss/Makefile index 5e349b4915130..d747aa7db3c12 100644 --- a/drivers/media/platform/qcom/camss/Makefile +++ b/drivers/media/platform/qcom/camss/Makefile @@ -10,10 +10,13 @@ qcom-camss-objs += \ camss-csid-680.o \ camss-csid-gen2.o \ camss-csid-gen3.o \ + camss-csiphy.o \ camss-csiphy-2ph-1-0.o \ camss-csiphy-3ph-1-0.o \ - camss-csiphy.o \ + camss-format.o \ camss-ispif.o \ + camss-tpg.o \ + camss-vfe.o \ camss-vfe-4-1.o \ camss-vfe-4-7.o \ camss-vfe-4-8.o \ @@ -21,11 +24,9 @@ qcom-camss-objs += \ camss-vfe-340.o \ camss-vfe-480.o \ camss-vfe-680.o \ - camss-vfe-gen3.o \ camss-vfe-gen1.o \ + camss-vfe-gen3.o \ camss-vfe-vbif.o \ - camss-vfe.o \ - camss-video.o \ - camss-format.o \ + camss-video.o obj-$(CONFIG_VIDEO_QCOM_CAMSS) += qcom-camss.o diff --git a/drivers/media/platform/qcom/camss/camss-tpg.c b/drivers/media/platform/qcom/camss/camss-tpg.c new file mode 100644 index 0000000000000..c5b75132add44 --- /dev/null +++ b/drivers/media/platform/qcom/camss/camss-tpg.c @@ -0,0 +1,519 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * + * Qualcomm MSM Camera Subsystem - TPG Module + * + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "camss-tpg.h" +#include "camss.h" + +static const struct tpg_format_info formats_gen1[] = { + { + MEDIA_BUS_FMT_SBGGR8_1X8, + MIPI_CSI2_DT_RAW8, + ENCODE_FORMAT_UNCOMPRESSED_8_BIT, + 8, + }, + { + MEDIA_BUS_FMT_SGBRG8_1X8, + MIPI_CSI2_DT_RAW8, + ENCODE_FORMAT_UNCOMPRESSED_8_BIT, + 8, + }, + { + MEDIA_BUS_FMT_SGRBG8_1X8, + MIPI_CSI2_DT_RAW8, + ENCODE_FORMAT_UNCOMPRESSED_8_BIT, + 8, + }, + { + MEDIA_BUS_FMT_SRGGB8_1X8, + MIPI_CSI2_DT_RAW8, + ENCODE_FORMAT_UNCOMPRESSED_8_BIT, + 8, + }, + { + MEDIA_BUS_FMT_SBGGR10_1X10, + MIPI_CSI2_DT_RAW10, + ENCODE_FORMAT_UNCOMPRESSED_10_BIT, + 10, + }, + { + MEDIA_BUS_FMT_SGBRG10_1X10, + MIPI_CSI2_DT_RAW10, + ENCODE_FORMAT_UNCOMPRESSED_10_BIT, + 10, + }, + { + MEDIA_BUS_FMT_SGRBG10_1X10, + MIPI_CSI2_DT_RAW10, + ENCODE_FORMAT_UNCOMPRESSED_10_BIT, + 10, + }, + { + MEDIA_BUS_FMT_SRGGB10_1X10, + MIPI_CSI2_DT_RAW10, + ENCODE_FORMAT_UNCOMPRESSED_10_BIT, + 10, + }, + { + MEDIA_BUS_FMT_SBGGR12_1X12, + MIPI_CSI2_DT_RAW12, + ENCODE_FORMAT_UNCOMPRESSED_12_BIT, + 12, + }, + { + MEDIA_BUS_FMT_SGBRG12_1X12, + MIPI_CSI2_DT_RAW12, + ENCODE_FORMAT_UNCOMPRESSED_12_BIT, + 12, + }, + { + MEDIA_BUS_FMT_SGRBG12_1X12, + MIPI_CSI2_DT_RAW12, + ENCODE_FORMAT_UNCOMPRESSED_12_BIT, + 12, + }, + { + MEDIA_BUS_FMT_SRGGB12_1X12, + MIPI_CSI2_DT_RAW12, + ENCODE_FORMAT_UNCOMPRESSED_12_BIT, + 12, + }, + { + MEDIA_BUS_FMT_Y8_1X8, + MIPI_CSI2_DT_RAW8, + ENCODE_FORMAT_UNCOMPRESSED_8_BIT, + 8, + }, + { + MEDIA_BUS_FMT_Y10_1X10, + MIPI_CSI2_DT_RAW10, + ENCODE_FORMAT_UNCOMPRESSED_10_BIT, + 10, + }, +}; + +const struct tpg_formats tpg_formats_gen1 = { + .nformats = ARRAY_SIZE(formats_gen1), + .formats = formats_gen1 +}; + +const struct tpg_format_info *tpg_get_fmt_entry(const struct tpg_format_info *formats, + unsigned int nformats, + u32 code) +{ + unsigned int i; + + for (i = 0; i < nformats; i++) + if (code == formats[i].code) + return &formats[i]; + + return ERR_PTR(-EINVAL); +} + +static int tpg_set_clock_rates(struct tpg_device *tpg) +{ + struct device *dev = tpg->camss->dev; + int i, ret; + + for (i = 0; i < tpg->nclocks; i++) { + struct camss_clock *clock = &tpg->clock[i]; + long round_rate; + + if (clock->freq) { + round_rate = clk_round_rate(clock->clk, clock->freq[0]); + if (round_rate < 0) { + dev_err(dev, "clk round rate failed: %ld\n", + round_rate); + return -EINVAL; + } + + ret = clk_set_rate(clock->clk, round_rate); + if (ret < 0) { + dev_err(dev, "clk set rate failed: %d\n", ret); + return ret; + } + } + } + + return 0; +} + +static int tpg_set_power(struct v4l2_subdev *sd, int on) +{ + struct tpg_device *tpg = v4l2_get_subdevdata(sd); + struct device *dev = tpg->camss->dev; + + if (on) { + int ret; + + ret = pm_runtime_resume_and_get(dev); + if (ret < 0) + return ret; + + ret = tpg_set_clock_rates(tpg); + if (ret < 0) { + pm_runtime_put_sync(dev); + return ret; + } + + ret = camss_enable_clocks(tpg->nclocks, tpg->clock, dev); + if (ret < 0) { + pm_runtime_put_sync(dev); + return ret; + } + + tpg->res->hw_ops->reset(tpg); + + tpg->res->hw_ops->hw_version(tpg); + } else { + camss_disable_clocks(tpg->nclocks, tpg->clock); + + pm_runtime_put_sync(dev); + } + + return 0; +} + +static int tpg_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct tpg_device *tpg = v4l2_get_subdevdata(sd); + int ret; + + if (enable) { + ret = v4l2_ctrl_handler_setup(&tpg->ctrls); + if (ret < 0) { + dev_err(tpg->camss->dev, + "could not sync v4l2 controls: %d\n", ret); + return ret; + } + } + + return tpg->res->hw_ops->configure_stream(tpg, enable); +} + +static struct v4l2_mbus_framefmt * +__tpg_get_format(struct tpg_device *tpg, + struct v4l2_subdev_state *sd_state, + unsigned int pad, + enum v4l2_subdev_format_whence which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_state_get_format(sd_state, + pad); + + return &tpg->fmt; +} + +static void tpg_try_format(struct tpg_device *tpg, + struct v4l2_mbus_framefmt *fmt) +{ + unsigned int i; + + for (i = 0; i < tpg->res->formats->nformats; i++) + if (tpg->res->formats->formats[i].code == fmt->code) + break; + + if (i >= tpg->res->formats->nformats) + fmt->code = MEDIA_BUS_FMT_SBGGR8_1X8; + + fmt->width = clamp_t(u32, fmt->width, TPG_MIN_WIDTH, TPG_MAX_WIDTH); + fmt->height = clamp_t(u32, fmt->height, TPG_MIN_HEIGHT, TPG_MAX_HEIGHT); + fmt->field = V4L2_FIELD_NONE; + fmt->colorspace = V4L2_COLORSPACE_SRGB; +} + +static int tpg_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct tpg_device *tpg = v4l2_get_subdevdata(sd); + + if (code->index >= tpg->res->formats->nformats) + return -EINVAL; + + code->code = tpg->res->formats->formats[code->index].code; + + return 0; +} + +static int tpg_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct tpg_device *tpg = v4l2_get_subdevdata(sd); + unsigned int i; + + if (fse->index != 0) + return -EINVAL; + + for (i = 0; i < tpg->res->formats->nformats; i++) + if (tpg->res->formats->formats[i].code == fse->code) + break; + + if (i >= tpg->res->formats->nformats) + return -EINVAL; + + fse->min_width = TPG_MIN_WIDTH; + fse->min_height = TPG_MIN_HEIGHT; + fse->max_width = TPG_MAX_WIDTH; + fse->max_height = TPG_MAX_HEIGHT; + + return 0; +} + +static int tpg_get_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct tpg_device *tpg = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __tpg_get_format(tpg, sd_state, fmt->pad, fmt->which); + if (!format) + return -EINVAL; + + fmt->format = *format; + + return 0; +} + +static int tpg_set_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct tpg_device *tpg = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __tpg_get_format(tpg, sd_state, fmt->pad, fmt->which); + if (!format) + return -EINVAL; + + tpg_try_format(tpg, &fmt->format); + *format = fmt->format; + + return 0; +} + +static int tpg_init_formats(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh) +{ + struct v4l2_subdev_format format = { + .pad = MSM_TPG_PAD_SRC, + .which = fh ? V4L2_SUBDEV_FORMAT_TRY : + V4L2_SUBDEV_FORMAT_ACTIVE, + .format = { + .code = MEDIA_BUS_FMT_SBGGR8_1X8, + .width = 1920, + .height = 1080, + } + }; + + return tpg_set_format(sd, fh ? fh->state : NULL, &format); +} + +static int tpg_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct tpg_device *tpg = container_of(ctrl->handler, + struct tpg_device, ctrls); + int ret = -EINVAL; + + switch (ctrl->id) { + case V4L2_CID_TEST_PATTERN: + ret = tpg->res->hw_ops->configure_testgen_pattern(tpg, ctrl->val); + break; + } + + return ret; +} + +static const struct v4l2_ctrl_ops tpg_ctrl_ops = { + .s_ctrl = tpg_s_ctrl, +}; + +int msm_tpg_subdev_init(struct camss *camss, + struct tpg_device *tpg, + const struct camss_subdev_resources *res, u8 id) +{ + struct platform_device *pdev; + struct device *dev; + int i, j; + + dev = camss->dev; + pdev = to_platform_device(dev); + + tpg->camss = camss; + tpg->id = id; + tpg->res = &res->tpg; + tpg->res->hw_ops->subdev_init(tpg); + + tpg->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]); + if (IS_ERR(tpg->base)) + return PTR_ERR(tpg->base); + + tpg->nclocks = 0; + while (res->clock[tpg->nclocks]) + tpg->nclocks++; + + if (!tpg->nclocks) + return 0; + + tpg->clock = devm_kcalloc(dev, tpg->nclocks, + sizeof(*tpg->clock), GFP_KERNEL); + if (!tpg->clock) + return -ENOMEM; + + for (i = 0; i < tpg->nclocks; i++) { + struct camss_clock *clock = &tpg->clock[i]; + + clock->clk = devm_clk_get(dev, res->clock[i]); + if (IS_ERR(clock->clk)) + return PTR_ERR(clock->clk); + + clock->name = res->clock[i]; + + clock->nfreqs = 0; + while (res->clock_rate[i][clock->nfreqs]) + clock->nfreqs++; + + if (!clock->nfreqs) { + clock->freq = NULL; + continue; + } + + clock->freq = devm_kcalloc(dev, clock->nfreqs, + sizeof(*clock->freq), GFP_KERNEL); + if (!clock->freq) + return -ENOMEM; + + for (j = 0; j < clock->nfreqs; j++) + clock->freq[j] = res->clock_rate[i][j]; + } + + return 0; +} + +static int tpg_link_setup(struct media_entity *entity, + const struct media_pad *local, + const struct media_pad *remote, u32 flags) +{ + if (flags & MEDIA_LNK_FL_ENABLED) + if (media_pad_remote_pad_first(local)) + return -EBUSY; + + return 0; +} + +static const struct v4l2_subdev_core_ops tpg_core_ops = { + .s_power = tpg_set_power, +}; + +static const struct v4l2_subdev_video_ops tpg_video_ops = { + .s_stream = tpg_set_stream, +}; + +static const struct v4l2_subdev_pad_ops tpg_pad_ops = { + .enum_mbus_code = tpg_enum_mbus_code, + .enum_frame_size = tpg_enum_frame_size, + .get_fmt = tpg_get_format, + .set_fmt = tpg_set_format, +}; + +static const struct v4l2_subdev_ops tpg_v4l2_ops = { + .core = &tpg_core_ops, + .video = &tpg_video_ops, + .pad = &tpg_pad_ops, +}; + +static const struct v4l2_subdev_internal_ops tpg_v4l2_internal_ops = { + .open = tpg_init_formats, +}; + +static const struct media_entity_operations tpg_media_ops = { + .link_setup = tpg_link_setup, + .link_validate = v4l2_subdev_link_validate, +}; + +int msm_tpg_register_entity(struct tpg_device *tpg, + struct v4l2_device *v4l2_dev) +{ + struct v4l2_subdev *sd = &tpg->subdev; + struct device *dev = tpg->camss->dev; + int ret; + + v4l2_subdev_init(sd, &tpg_v4l2_ops); + sd->internal_ops = &tpg_v4l2_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | + V4L2_SUBDEV_FL_HAS_EVENTS; + snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d", + "msm_tpg", tpg->id); + sd->grp_id = TPG_GRP_ID; + v4l2_set_subdevdata(sd, tpg); + + ret = v4l2_ctrl_handler_init(&tpg->ctrls, 1); + if (ret < 0) { + dev_err(dev, "Failed to init ctrl handler: %d\n", ret); + return ret; + } + + tpg->testgen_mode = v4l2_ctrl_new_std_menu_items(&tpg->ctrls, + &tpg_ctrl_ops, V4L2_CID_TEST_PATTERN, + tpg->testgen.nmodes, 0, 0, + tpg->testgen.modes); + if (tpg->ctrls.error) { + dev_err(dev, "Failed to init ctrl: %d\n", tpg->ctrls.error); + ret = tpg->ctrls.error; + goto free_ctrl; + } + + tpg->subdev.ctrl_handler = &tpg->ctrls; + + ret = tpg_init_formats(sd, NULL); + if (ret < 0) { + dev_err(dev, "Failed to init format: %d\n", ret); + goto free_ctrl; + } + + tpg->pad.flags = MEDIA_PAD_FL_SOURCE; + + sd->entity.ops = &tpg_media_ops; + ret = media_entity_pads_init(&sd->entity, 1, &tpg->pad); + if (ret < 0) { + dev_err(dev, "Failed to init media entity: %d\n", ret); + goto free_ctrl; + } + + ret = v4l2_device_register_subdev(v4l2_dev, sd); + if (ret < 0) { + dev_err(dev, "Failed to register subdev: %d\n", ret); + media_entity_cleanup(&sd->entity); + goto free_ctrl; + } + + return 0; + +free_ctrl: + v4l2_ctrl_handler_free(&tpg->ctrls); + + return ret; +} + +void msm_tpg_unregister_entity(struct tpg_device *tpg) +{ + v4l2_device_unregister_subdev(&tpg->subdev); + media_entity_cleanup(&tpg->subdev.entity); + v4l2_ctrl_handler_free(&tpg->ctrls); +} diff --git a/drivers/media/platform/qcom/camss/camss-tpg.h b/drivers/media/platform/qcom/camss/camss-tpg.h new file mode 100644 index 0000000000000..7fb35a97dd068 --- /dev/null +++ b/drivers/media/platform/qcom/camss/camss-tpg.h @@ -0,0 +1,118 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * camss-tpg.h + * + * Qualcomm MSM Camera Subsystem - TPG Module + * + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. + */ +#ifndef QC_MSM_CAMSS_TPG_H +#define QC_MSM_CAMSS_TPG_H + +#include +#include +#include +#include +#include +#include +#include + +#define ENCODE_FORMAT_UNCOMPRESSED_8_BIT 0x1 +#define ENCODE_FORMAT_UNCOMPRESSED_10_BIT 0x2 +#define ENCODE_FORMAT_UNCOMPRESSED_12_BIT 0x3 +#define ENCODE_FORMAT_UNCOMPRESSED_14_BIT 0x4 +#define ENCODE_FORMAT_UNCOMPRESSED_16_BIT 0x5 +#define ENCODE_FORMAT_UNCOMPRESSED_20_BIT 0x6 +#define ENCODE_FORMAT_UNCOMPRESSED_24_BIT 0x7 + +#define MSM_TPG_PAD_SRC 0 +#define MSM_TPG_ACTIVE_VC 0 +#define MSM_TPG_ACTIVE_DT 0 + +#define TPG_MIN_WIDTH 1 +#define TPG_MIN_HEIGHT 1 +#define TPG_MAX_WIDTH 8191 +#define TPG_MAX_HEIGHT 8191 + +#define TPG_GRP_ID 0 + +enum tpg_testgen_mode { + TPG_PAYLOAD_MODE_DISABLED = 0, + TPG_PAYLOAD_MODE_INCREMENTING = 1, + TPG_PAYLOAD_MODE_ALTERNATING_55_AA = 2, + TPG_PAYLOAD_MODE_RANDOM = 5, + TPG_PAYLOAD_MODE_USER_SPECIFIED = 6, + TPG_PAYLOAD_MODE_COLOR_BARS = 9, + TPG_PAYLOAD_MODE_NUM_SUPPORTED_GEN1 = 9, +}; + +struct tpg_testgen_config { + enum tpg_testgen_mode mode; + const char * const*modes; + u8 nmodes; +}; + +struct tpg_format_info { + u32 code; + u8 data_type; + u8 encode_format; + u8 bpp; +}; + +struct tpg_formats { + unsigned int nformats; + const struct tpg_format_info *formats; +}; + +struct tpg_device; + +struct tpg_hw_ops { + int (*configure_stream)(struct tpg_device *tpg, u8 enable); + int (*configure_testgen_pattern)(struct tpg_device *tpg, s32 val); + u32 (*hw_version)(struct tpg_device *tpg); + int (*reset)(struct tpg_device *tpg); + void (*subdev_init)(struct tpg_device *tpg); +}; + +struct tpg_subdev_resources { + u8 lane_cnt; + const struct tpg_formats *formats; + const struct tpg_hw_ops *hw_ops; +}; + +struct tpg_device { + struct camss *camss; + u8 id; + struct v4l2_subdev subdev; + struct media_pad pad; + void __iomem *base; + struct camss_clock *clock; + int nclocks; + struct tpg_testgen_config testgen; + struct v4l2_mbus_framefmt fmt; + struct v4l2_ctrl_handler ctrls; + struct v4l2_ctrl *testgen_mode; + const struct tpg_subdev_resources *res; + u32 hw_version; +}; + +struct camss_subdev_resources; + +const struct tpg_format_info *tpg_get_fmt_entry(const struct tpg_format_info *formats, + unsigned int nformats, + u32 code); + +int msm_tpg_subdev_init(struct camss *camss, + struct tpg_device *tpg, + const struct camss_subdev_resources *res, u8 id); + +int msm_tpg_register_entity(struct tpg_device *tpg, + struct v4l2_device *v4l2_dev); + +void msm_tpg_unregister_entity(struct tpg_device *tpg); + +extern const struct tpg_formats tpg_formats_gen1; + +extern const struct tpg_hw_ops tpg_ops_gen1; + +#endif /* QC_MSM_CAMSS_TPG_H */ diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h index d323c105d1859..93d691c8ac63b 100644 --- a/drivers/media/platform/qcom/camss/camss.h +++ b/drivers/media/platform/qcom/camss/camss.h @@ -21,6 +21,7 @@ #include "camss-csid.h" #include "camss-csiphy.h" #include "camss-ispif.h" +#include "camss-tpg.h" #include "camss-vfe.h" #include "camss-format.h" @@ -52,6 +53,7 @@ struct camss_subdev_resources { char *interrupt[CAMSS_RES_MAX]; union { struct csiphy_subdev_resources csiphy; + struct tpg_subdev_resources tpg; struct csid_subdev_resources csid; struct vfe_subdev_resources vfe; }; @@ -106,6 +108,7 @@ struct camss_resources { enum camss_version version; const char *pd_name; const struct camss_subdev_resources *csiphy_res; + const struct camss_subdev_resources *tpg_res; const struct camss_subdev_resources *csid_res; const struct camss_subdev_resources *ispif_res; const struct camss_subdev_resources *vfe_res; @@ -113,6 +116,7 @@ struct camss_resources { const struct resources_icc *icc_res; const unsigned int icc_path_num; const unsigned int csiphy_num; + const unsigned int tpg_num; const unsigned int csid_num; const unsigned int vfe_num; }; @@ -123,6 +127,7 @@ struct camss { struct media_device media_dev; struct device *dev; struct csiphy_device *csiphy; + struct tpg_device *tpg; struct csid_device *csid; struct ispif_device *ispif; struct vfe_device *vfe;