diff options
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_lut.c')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_lut.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_lut.c b/drivers/media/platform/vsp1/vsp1_lut.c deleted file mode 100644 index c67cc60db0db..000000000000 --- a/drivers/media/platform/vsp1/vsp1_lut.c +++ /dev/null @@ -1,263 +0,0 @@ -/* - * vsp1_lut.c -- R-Car VSP1 Look-Up Table - * - * Copyright (C) 2013 Renesas Corporation - * - * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/device.h> -#include <linux/gfp.h> - -#include <media/v4l2-subdev.h> - -#include "vsp1.h" -#include "vsp1_dl.h" -#include "vsp1_lut.h" - -#define LUT_MIN_SIZE 4U -#define LUT_MAX_SIZE 8190U - -/* ----------------------------------------------------------------------------- - * Device Access - */ - -static inline void vsp1_lut_write(struct vsp1_lut *lut, struct vsp1_dl_list *dl, - u32 reg, u32 data) -{ - vsp1_dl_list_write(dl, reg, data); -} - -/* ----------------------------------------------------------------------------- - * Controls - */ - -#define V4L2_CID_VSP1_LUT_TABLE (V4L2_CID_USER_BASE | 0x1001) - -static int lut_set_table(struct vsp1_lut *lut, struct v4l2_ctrl *ctrl) -{ - struct vsp1_dl_body *dlb; - unsigned int i; - - dlb = vsp1_dl_fragment_alloc(lut->entity.vsp1, 256); - if (!dlb) - return -ENOMEM; - - for (i = 0; i < 256; ++i) - vsp1_dl_fragment_write(dlb, VI6_LUT_TABLE + 4 * i, - ctrl->p_new.p_u32[i]); - - spin_lock_irq(&lut->lock); - swap(lut->lut, dlb); - spin_unlock_irq(&lut->lock); - - vsp1_dl_fragment_free(dlb); - return 0; -} - -static int lut_s_ctrl(struct v4l2_ctrl *ctrl) -{ - struct vsp1_lut *lut = - container_of(ctrl->handler, struct vsp1_lut, ctrls); - - switch (ctrl->id) { - case V4L2_CID_VSP1_LUT_TABLE: - lut_set_table(lut, ctrl); - break; - } - - return 0; -} - -static const struct v4l2_ctrl_ops lut_ctrl_ops = { - .s_ctrl = lut_s_ctrl, -}; - -static const struct v4l2_ctrl_config lut_table_control = { - .ops = &lut_ctrl_ops, - .id = V4L2_CID_VSP1_LUT_TABLE, - .name = "Look-Up Table", - .type = V4L2_CTRL_TYPE_U32, - .min = 0x00000000, - .max = 0x00ffffff, - .step = 1, - .def = 0, - .dims = { 256}, -}; - -/* ----------------------------------------------------------------------------- - * V4L2 Subdevice Pad Operations - */ - -static int lut_enum_mbus_code(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_mbus_code_enum *code) -{ - static const unsigned int codes[] = { - MEDIA_BUS_FMT_ARGB8888_1X32, - MEDIA_BUS_FMT_AHSV8888_1X32, - MEDIA_BUS_FMT_AYUV8_1X32, - }; - - return vsp1_subdev_enum_mbus_code(subdev, cfg, code, codes, - ARRAY_SIZE(codes)); -} - -static int lut_enum_frame_size(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_frame_size_enum *fse) -{ - return vsp1_subdev_enum_frame_size(subdev, cfg, fse, LUT_MIN_SIZE, - LUT_MIN_SIZE, LUT_MAX_SIZE, - LUT_MAX_SIZE); -} - -static int lut_set_format(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_format *fmt) -{ - struct vsp1_lut *lut = to_lut(subdev); - struct v4l2_subdev_pad_config *config; - struct v4l2_mbus_framefmt *format; - int ret = 0; - - mutex_lock(&lut->entity.lock); - - config = vsp1_entity_get_pad_config(&lut->entity, cfg, fmt->which); - if (!config) { - ret = -EINVAL; - goto done; - } - - /* Default to YUV if the requested format is not supported. */ - if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_1X32 && - fmt->format.code != MEDIA_BUS_FMT_AHSV8888_1X32 && - fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32) - fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32; - - format = vsp1_entity_get_pad_format(&lut->entity, config, fmt->pad); - - if (fmt->pad == LUT_PAD_SOURCE) { - /* The LUT output format can't be modified. */ - fmt->format = *format; - goto done; - } - - format->code = fmt->format.code; - format->width = clamp_t(unsigned int, fmt->format.width, - LUT_MIN_SIZE, LUT_MAX_SIZE); - format->height = clamp_t(unsigned int, fmt->format.height, - LUT_MIN_SIZE, LUT_MAX_SIZE); - format->field = V4L2_FIELD_NONE; - format->colorspace = V4L2_COLORSPACE_SRGB; - - fmt->format = *format; - - /* Propagate the format to the source pad. */ - format = vsp1_entity_get_pad_format(&lut->entity, config, - LUT_PAD_SOURCE); - *format = fmt->format; - -done: - mutex_unlock(&lut->entity.lock); - return ret; -} - -/* ----------------------------------------------------------------------------- - * V4L2 Subdevice Operations - */ - -static const struct v4l2_subdev_pad_ops lut_pad_ops = { - .init_cfg = vsp1_entity_init_cfg, - .enum_mbus_code = lut_enum_mbus_code, - .enum_frame_size = lut_enum_frame_size, - .get_fmt = vsp1_subdev_get_pad_format, - .set_fmt = lut_set_format, -}; - -static const struct v4l2_subdev_ops lut_ops = { - .pad = &lut_pad_ops, -}; - -/* ----------------------------------------------------------------------------- - * VSP1 Entity Operations - */ - -static void lut_configure(struct vsp1_entity *entity, - struct vsp1_pipeline *pipe, - struct vsp1_dl_list *dl, - enum vsp1_entity_params params) -{ - struct vsp1_lut *lut = to_lut(&entity->subdev); - struct vsp1_dl_body *dlb; - unsigned long flags; - - switch (params) { - case VSP1_ENTITY_PARAMS_INIT: - vsp1_lut_write(lut, dl, VI6_LUT_CTRL, VI6_LUT_CTRL_EN); - break; - - case VSP1_ENTITY_PARAMS_PARTITION: - break; - - case VSP1_ENTITY_PARAMS_RUNTIME: - spin_lock_irqsave(&lut->lock, flags); - dlb = lut->lut; - lut->lut = NULL; - spin_unlock_irqrestore(&lut->lock, flags); - - if (dlb) - vsp1_dl_list_add_fragment(dl, dlb); - break; - } -} - -static const struct vsp1_entity_operations lut_entity_ops = { - .configure = lut_configure, -}; - -/* ----------------------------------------------------------------------------- - * Initialization and Cleanup - */ - -struct vsp1_lut *vsp1_lut_create(struct vsp1_device *vsp1) -{ - struct vsp1_lut *lut; - int ret; - - lut = devm_kzalloc(vsp1->dev, sizeof(*lut), GFP_KERNEL); - if (lut == NULL) - return ERR_PTR(-ENOMEM); - - spin_lock_init(&lut->lock); - - lut->entity.ops = &lut_entity_ops; - lut->entity.type = VSP1_ENTITY_LUT; - - ret = vsp1_entity_init(vsp1, &lut->entity, "lut", 2, &lut_ops, - MEDIA_ENT_F_PROC_VIDEO_LUT); - if (ret < 0) - return ERR_PTR(ret); - - /* Initialize the control handler. */ - v4l2_ctrl_handler_init(&lut->ctrls, 1); - v4l2_ctrl_new_custom(&lut->ctrls, &lut_table_control, NULL); - - lut->entity.subdev.ctrl_handler = &lut->ctrls; - - if (lut->ctrls.error) { - dev_err(vsp1->dev, "lut: failed to initialize controls\n"); - ret = lut->ctrls.error; - vsp1_entity_destroy(&lut->entity); - return ERR_PTR(ret); - } - - v4l2_ctrl_handler_setup(&lut->ctrls); - - return lut; -} |