diff options
Diffstat (limited to 'drivers/media/platform/renesas/vsp1/vsp1_clu.c')
| -rw-r--r-- | drivers/media/platform/renesas/vsp1/vsp1_clu.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_clu.c b/drivers/media/platform/renesas/vsp1/vsp1_clu.c new file mode 100644 index 000000000..c5217fee2 --- /dev/null +++ b/drivers/media/platform/renesas/vsp1/vsp1_clu.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * vsp1_clu.c -- R-Car VSP1 Cubic Look-Up Table + * + * Copyright (C) 2015-2016 Renesas Electronics Corporation + * + * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) + */ + +#include <linux/device.h> +#include <linux/slab.h> + +#include <media/v4l2-subdev.h> + +#include "vsp1.h" +#include "vsp1_clu.h" +#include "vsp1_dl.h" + +#define CLU_MIN_SIZE 4U +#define CLU_MAX_SIZE 8190U + +#define CLU_SIZE (17 * 17 * 17) + +/* ----------------------------------------------------------------------------- + * Device Access + */ + +static inline void vsp1_clu_write(struct vsp1_clu *clu, + struct vsp1_dl_body *dlb, u32 reg, u32 data) +{ + vsp1_dl_body_write(dlb, reg, data); +} + +/* ----------------------------------------------------------------------------- + * Controls + */ + +#define V4L2_CID_VSP1_CLU_TABLE (V4L2_CID_USER_BASE | 0x1001) +#define V4L2_CID_VSP1_CLU_MODE (V4L2_CID_USER_BASE | 0x1002) +#define V4L2_CID_VSP1_CLU_MODE_2D 0 +#define V4L2_CID_VSP1_CLU_MODE_3D 1 + +static int clu_set_table(struct vsp1_clu *clu, struct v4l2_ctrl *ctrl) +{ + struct vsp1_dl_body *dlb; + unsigned int i; + + dlb = vsp1_dl_body_get(clu->pool); + if (!dlb) + return -ENOMEM; + + vsp1_dl_body_write(dlb, VI6_CLU_ADDR, 0); + for (i = 0; i < CLU_SIZE; ++i) + vsp1_dl_body_write(dlb, VI6_CLU_DATA, ctrl->p_new.p_u32[i]); + + spin_lock_irq(&clu->lock); + swap(clu->clu, dlb); + spin_unlock_irq(&clu->lock); + + vsp1_dl_body_put(dlb); + return 0; +} + +static int clu_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct vsp1_clu *clu = + container_of(ctrl->handler, struct vsp1_clu, ctrls); + + switch (ctrl->id) { + case V4L2_CID_VSP1_CLU_TABLE: + clu_set_table(clu, ctrl); + break; + + case V4L2_CID_VSP1_CLU_MODE: + clu->mode = ctrl->val; + break; + } + + return 0; +} + +static const struct v4l2_ctrl_ops clu_ctrl_ops = { + .s_ctrl = clu_s_ctrl, +}; + +static const struct v4l2_ctrl_config clu_table_control = { + .ops = &clu_ctrl_ops, + .id = V4L2_CID_VSP1_CLU_TABLE, + .name = "Look-Up Table", + .type = V4L2_CTRL_TYPE_U32, + .min = 0x00000000, + .max = 0x00ffffff, + .step = 1, + .def = 0, + .dims = { 17, 17, 17 }, +}; + +static const char * const clu_mode_menu[] = { + "2D", + "3D", + NULL, +}; + +static const struct v4l2_ctrl_config clu_mode_control = { + .ops = &clu_ctrl_ops, + .id = V4L2_CID_VSP1_CLU_MODE, + .name = "Mode", + .type = V4L2_CTRL_TYPE_MENU, + .min = 0, + .max = 1, + .def = 1, + .qmenu = clu_mode_menu, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 Subdevice Pad Operations + */ + +static const unsigned int clu_codes[] = { + MEDIA_BUS_FMT_ARGB8888_1X32, + MEDIA_BUS_FMT_AHSV8888_1X32, + MEDIA_BUS_FMT_AYUV8_1X32, +}; + +static int clu_enum_mbus_code(struct v4l2_subdev *subdev, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + return vsp1_subdev_enum_mbus_code(subdev, sd_state, code, clu_codes, + ARRAY_SIZE(clu_codes)); +} + +static int clu_enum_frame_size(struct v4l2_subdev *subdev, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + return vsp1_subdev_enum_frame_size(subdev, sd_state, fse, + CLU_MIN_SIZE, + CLU_MIN_SIZE, CLU_MAX_SIZE, + CLU_MAX_SIZE); +} + +static int clu_set_format(struct v4l2_subdev *subdev, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + return vsp1_subdev_set_pad_format(subdev, sd_state, fmt, clu_codes, + ARRAY_SIZE(clu_codes), + CLU_MIN_SIZE, CLU_MIN_SIZE, + CLU_MAX_SIZE, CLU_MAX_SIZE); +} + +/* ----------------------------------------------------------------------------- + * V4L2 Subdevice Operations + */ + +static const struct v4l2_subdev_pad_ops clu_pad_ops = { + .init_cfg = vsp1_entity_init_cfg, + .enum_mbus_code = clu_enum_mbus_code, + .enum_frame_size = clu_enum_frame_size, + .get_fmt = vsp1_subdev_get_pad_format, + .set_fmt = clu_set_format, +}; + +static const struct v4l2_subdev_ops clu_ops = { + .pad = &clu_pad_ops, +}; + +/* ----------------------------------------------------------------------------- + * VSP1 Entity Operations + */ + +static void clu_configure_stream(struct vsp1_entity *entity, + struct vsp1_pipeline *pipe, + struct vsp1_dl_list *dl, + struct vsp1_dl_body *dlb) +{ + struct vsp1_clu *clu = to_clu(&entity->subdev); + struct v4l2_mbus_framefmt *format; + + /* + * The yuv_mode can't be changed during streaming. Cache it internally + * for future runtime configuration calls. + */ + format = vsp1_entity_get_pad_format(&clu->entity, + clu->entity.config, + CLU_PAD_SINK); + clu->yuv_mode = format->code == MEDIA_BUS_FMT_AYUV8_1X32; +} + +static void clu_configure_frame(struct vsp1_entity *entity, + struct vsp1_pipeline *pipe, + struct vsp1_dl_list *dl, + struct vsp1_dl_body *dlb) +{ + struct vsp1_clu *clu = to_clu(&entity->subdev); + struct vsp1_dl_body *clu_dlb; + unsigned long flags; + u32 ctrl = VI6_CLU_CTRL_AAI | VI6_CLU_CTRL_MVS | VI6_CLU_CTRL_EN; + + /* 2D mode can only be used with the YCbCr pixel encoding. */ + if (clu->mode == V4L2_CID_VSP1_CLU_MODE_2D && clu->yuv_mode) + ctrl |= VI6_CLU_CTRL_AX1I_2D | VI6_CLU_CTRL_AX2I_2D + | VI6_CLU_CTRL_OS0_2D | VI6_CLU_CTRL_OS1_2D + | VI6_CLU_CTRL_OS2_2D | VI6_CLU_CTRL_M2D; + + vsp1_clu_write(clu, dlb, VI6_CLU_CTRL, ctrl); + + spin_lock_irqsave(&clu->lock, flags); + clu_dlb = clu->clu; + clu->clu = NULL; + spin_unlock_irqrestore(&clu->lock, flags); + + if (clu_dlb) { + vsp1_dl_list_add_body(dl, clu_dlb); + + /* Release our local reference. */ + vsp1_dl_body_put(clu_dlb); + } +} + +static void clu_destroy(struct vsp1_entity *entity) +{ + struct vsp1_clu *clu = to_clu(&entity->subdev); + + vsp1_dl_body_pool_destroy(clu->pool); +} + +static const struct vsp1_entity_operations clu_entity_ops = { + .configure_stream = clu_configure_stream, + .configure_frame = clu_configure_frame, + .destroy = clu_destroy, +}; + +/* ----------------------------------------------------------------------------- + * Initialization and Cleanup + */ + +struct vsp1_clu *vsp1_clu_create(struct vsp1_device *vsp1) +{ + struct vsp1_clu *clu; + int ret; + + clu = devm_kzalloc(vsp1->dev, sizeof(*clu), GFP_KERNEL); + if (clu == NULL) + return ERR_PTR(-ENOMEM); + + spin_lock_init(&clu->lock); + + clu->entity.ops = &clu_entity_ops; + clu->entity.type = VSP1_ENTITY_CLU; + + ret = vsp1_entity_init(vsp1, &clu->entity, "clu", 2, &clu_ops, + MEDIA_ENT_F_PROC_VIDEO_LUT); + if (ret < 0) + return ERR_PTR(ret); + + /* + * Pre-allocate a body pool, with 3 bodies allowing a userspace update + * before the hardware has committed a previous set of tables, handling + * both the queued and pending dl entries. One extra entry is added to + * the CLU_SIZE to allow for the VI6_CLU_ADDR header. + */ + clu->pool = vsp1_dl_body_pool_create(clu->entity.vsp1, 3, CLU_SIZE + 1, + 0); + if (!clu->pool) + return ERR_PTR(-ENOMEM); + + /* Initialize the control handler. */ + v4l2_ctrl_handler_init(&clu->ctrls, 2); + v4l2_ctrl_new_custom(&clu->ctrls, &clu_table_control, NULL); + v4l2_ctrl_new_custom(&clu->ctrls, &clu_mode_control, NULL); + + clu->entity.subdev.ctrl_handler = &clu->ctrls; + + if (clu->ctrls.error) { + dev_err(vsp1->dev, "clu: failed to initialize controls\n"); + ret = clu->ctrls.error; + vsp1_entity_destroy(&clu->entity); + return ERR_PTR(ret); + } + + v4l2_ctrl_handler_setup(&clu->ctrls); + + return clu; +} |