|
|
@@ -0,0 +1,222 @@
|
|
|
+/*
|
|
|
+ * vsp1_hgt.c -- R-Car VSP1 Histogram Generator 2D
|
|
|
+ *
|
|
|
+ * Copyright (C) 2016 Renesas Electronics Corporation
|
|
|
+ *
|
|
|
+ * Contact: Niklas Söderlund (niklas.soderlund@ragnatech.se)
|
|
|
+ *
|
|
|
+ * 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 <media/videobuf2-vmalloc.h>
|
|
|
+
|
|
|
+#include "vsp1.h"
|
|
|
+#include "vsp1_dl.h"
|
|
|
+#include "vsp1_hgt.h"
|
|
|
+
|
|
|
+#define HGT_DATA_SIZE ((2 + 6 * 32) * 4)
|
|
|
+
|
|
|
+/* -----------------------------------------------------------------------------
|
|
|
+ * Device Access
|
|
|
+ */
|
|
|
+
|
|
|
+static inline u32 vsp1_hgt_read(struct vsp1_hgt *hgt, u32 reg)
|
|
|
+{
|
|
|
+ return vsp1_read(hgt->histo.entity.vsp1, reg);
|
|
|
+}
|
|
|
+
|
|
|
+static inline void vsp1_hgt_write(struct vsp1_hgt *hgt, struct vsp1_dl_list *dl,
|
|
|
+ u32 reg, u32 data)
|
|
|
+{
|
|
|
+ vsp1_dl_list_write(dl, reg, data);
|
|
|
+}
|
|
|
+
|
|
|
+/* -----------------------------------------------------------------------------
|
|
|
+ * Frame End Handler
|
|
|
+ */
|
|
|
+
|
|
|
+void vsp1_hgt_frame_end(struct vsp1_entity *entity)
|
|
|
+{
|
|
|
+ struct vsp1_hgt *hgt = to_hgt(&entity->subdev);
|
|
|
+ struct vsp1_histogram_buffer *buf;
|
|
|
+ unsigned int m;
|
|
|
+ unsigned int n;
|
|
|
+ u32 *data;
|
|
|
+
|
|
|
+ buf = vsp1_histogram_buffer_get(&hgt->histo);
|
|
|
+ if (!buf)
|
|
|
+ return;
|
|
|
+
|
|
|
+ data = buf->addr;
|
|
|
+
|
|
|
+ *data++ = vsp1_hgt_read(hgt, VI6_HGT_MAXMIN);
|
|
|
+ *data++ = vsp1_hgt_read(hgt, VI6_HGT_SUM);
|
|
|
+
|
|
|
+ for (m = 0; m < 6; ++m)
|
|
|
+ for (n = 0; n < 32; ++n)
|
|
|
+ *data++ = vsp1_hgt_read(hgt, VI6_HGT_HISTO(m, n));
|
|
|
+
|
|
|
+ vsp1_histogram_buffer_complete(&hgt->histo, buf, HGT_DATA_SIZE);
|
|
|
+}
|
|
|
+
|
|
|
+/* -----------------------------------------------------------------------------
|
|
|
+ * Controls
|
|
|
+ */
|
|
|
+
|
|
|
+#define V4L2_CID_VSP1_HGT_HUE_AREAS (V4L2_CID_USER_BASE | 0x1001)
|
|
|
+
|
|
|
+static int hgt_hue_areas_try_ctrl(struct v4l2_ctrl *ctrl)
|
|
|
+{
|
|
|
+ const u8 *values = ctrl->p_new.p_u8;
|
|
|
+ unsigned int i;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * The hardware has constraints on the hue area boundaries beyond the
|
|
|
+ * control min, max and step. The values must match one of the following
|
|
|
+ * expressions.
|
|
|
+ *
|
|
|
+ * 0L <= 0U <= 1L <= 1U <= 2L <= 2U <= 3L <= 3U <= 4L <= 4U <= 5L <= 5U
|
|
|
+ * 0U <= 1L <= 1U <= 2L <= 2U <= 3L <= 3U <= 4L <= 4U <= 5L <= 5U <= 0L
|
|
|
+ *
|
|
|
+ * Start by verifying the common part...
|
|
|
+ */
|
|
|
+ for (i = 1; i < (HGT_NUM_HUE_AREAS * 2) - 1; ++i) {
|
|
|
+ if (values[i] > values[i+1])
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* ... and handle 0L separately. */
|
|
|
+ if (values[0] > values[1] && values[11] > values[0])
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int hgt_hue_areas_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
|
+{
|
|
|
+ struct vsp1_hgt *hgt = container_of(ctrl->handler, struct vsp1_hgt,
|
|
|
+ ctrls);
|
|
|
+
|
|
|
+ memcpy(hgt->hue_areas, ctrl->p_new.p_u8, sizeof(hgt->hue_areas));
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static const struct v4l2_ctrl_ops hgt_hue_areas_ctrl_ops = {
|
|
|
+ .try_ctrl = hgt_hue_areas_try_ctrl,
|
|
|
+ .s_ctrl = hgt_hue_areas_s_ctrl,
|
|
|
+};
|
|
|
+
|
|
|
+static const struct v4l2_ctrl_config hgt_hue_areas = {
|
|
|
+ .ops = &hgt_hue_areas_ctrl_ops,
|
|
|
+ .id = V4L2_CID_VSP1_HGT_HUE_AREAS,
|
|
|
+ .name = "Boundary Values for Hue Area",
|
|
|
+ .type = V4L2_CTRL_TYPE_U8,
|
|
|
+ .min = 0,
|
|
|
+ .max = 255,
|
|
|
+ .def = 0,
|
|
|
+ .step = 1,
|
|
|
+ .dims = { 12 },
|
|
|
+};
|
|
|
+
|
|
|
+/* -----------------------------------------------------------------------------
|
|
|
+ * VSP1 Entity Operations
|
|
|
+ */
|
|
|
+
|
|
|
+static void hgt_configure(struct vsp1_entity *entity,
|
|
|
+ struct vsp1_pipeline *pipe,
|
|
|
+ struct vsp1_dl_list *dl,
|
|
|
+ enum vsp1_entity_params params)
|
|
|
+{
|
|
|
+ struct vsp1_hgt *hgt = to_hgt(&entity->subdev);
|
|
|
+ struct v4l2_rect *compose;
|
|
|
+ struct v4l2_rect *crop;
|
|
|
+ unsigned int hratio;
|
|
|
+ unsigned int vratio;
|
|
|
+ u8 lower;
|
|
|
+ u8 upper;
|
|
|
+ unsigned int i;
|
|
|
+
|
|
|
+ if (params != VSP1_ENTITY_PARAMS_INIT)
|
|
|
+ return;
|
|
|
+
|
|
|
+ crop = vsp1_entity_get_pad_selection(entity, entity->config,
|
|
|
+ HISTO_PAD_SINK, V4L2_SEL_TGT_CROP);
|
|
|
+ compose = vsp1_entity_get_pad_selection(entity, entity->config,
|
|
|
+ HISTO_PAD_SINK,
|
|
|
+ V4L2_SEL_TGT_COMPOSE);
|
|
|
+
|
|
|
+ vsp1_hgt_write(hgt, dl, VI6_HGT_REGRST, VI6_HGT_REGRST_RCLEA);
|
|
|
+
|
|
|
+ vsp1_hgt_write(hgt, dl, VI6_HGT_OFFSET,
|
|
|
+ (crop->left << VI6_HGT_OFFSET_HOFFSET_SHIFT) |
|
|
|
+ (crop->top << VI6_HGT_OFFSET_VOFFSET_SHIFT));
|
|
|
+ vsp1_hgt_write(hgt, dl, VI6_HGT_SIZE,
|
|
|
+ (crop->width << VI6_HGT_SIZE_HSIZE_SHIFT) |
|
|
|
+ (crop->height << VI6_HGT_SIZE_VSIZE_SHIFT));
|
|
|
+
|
|
|
+ mutex_lock(hgt->ctrls.lock);
|
|
|
+ for (i = 0; i < HGT_NUM_HUE_AREAS; ++i) {
|
|
|
+ lower = hgt->hue_areas[i*2 + 0];
|
|
|
+ upper = hgt->hue_areas[i*2 + 1];
|
|
|
+ vsp1_hgt_write(hgt, dl, VI6_HGT_HUE_AREA(i),
|
|
|
+ (lower << VI6_HGT_HUE_AREA_LOWER_SHIFT) |
|
|
|
+ (upper << VI6_HGT_HUE_AREA_UPPER_SHIFT));
|
|
|
+ }
|
|
|
+ mutex_unlock(hgt->ctrls.lock);
|
|
|
+
|
|
|
+ hratio = crop->width * 2 / compose->width / 3;
|
|
|
+ vratio = crop->height * 2 / compose->height / 3;
|
|
|
+ vsp1_hgt_write(hgt, dl, VI6_HGT_MODE,
|
|
|
+ (hratio << VI6_HGT_MODE_HRATIO_SHIFT) |
|
|
|
+ (vratio << VI6_HGT_MODE_VRATIO_SHIFT));
|
|
|
+}
|
|
|
+
|
|
|
+static const struct vsp1_entity_operations hgt_entity_ops = {
|
|
|
+ .configure = hgt_configure,
|
|
|
+ .destroy = vsp1_histogram_destroy,
|
|
|
+};
|
|
|
+
|
|
|
+/* -----------------------------------------------------------------------------
|
|
|
+ * Initialization and Cleanup
|
|
|
+ */
|
|
|
+
|
|
|
+static const unsigned int hgt_mbus_formats[] = {
|
|
|
+ MEDIA_BUS_FMT_AHSV8888_1X32,
|
|
|
+};
|
|
|
+
|
|
|
+struct vsp1_hgt *vsp1_hgt_create(struct vsp1_device *vsp1)
|
|
|
+{
|
|
|
+ struct vsp1_hgt *hgt;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ hgt = devm_kzalloc(vsp1->dev, sizeof(*hgt), GFP_KERNEL);
|
|
|
+ if (hgt == NULL)
|
|
|
+ return ERR_PTR(-ENOMEM);
|
|
|
+
|
|
|
+ /* Initialize the control handler. */
|
|
|
+ v4l2_ctrl_handler_init(&hgt->ctrls, 1);
|
|
|
+ v4l2_ctrl_new_custom(&hgt->ctrls, &hgt_hue_areas, NULL);
|
|
|
+
|
|
|
+ hgt->histo.entity.subdev.ctrl_handler = &hgt->ctrls;
|
|
|
+
|
|
|
+ /* Initialize the video device and queue for statistics data. */
|
|
|
+ ret = vsp1_histogram_init(vsp1, &hgt->histo, VSP1_ENTITY_HGT, "hgt",
|
|
|
+ &hgt_entity_ops, hgt_mbus_formats,
|
|
|
+ ARRAY_SIZE(hgt_mbus_formats),
|
|
|
+ HGT_DATA_SIZE, V4L2_META_FMT_VSP1_HGT);
|
|
|
+ if (ret < 0) {
|
|
|
+ vsp1_entity_destroy(&hgt->histo.entity);
|
|
|
+ return ERR_PTR(ret);
|
|
|
+ }
|
|
|
+
|
|
|
+ v4l2_ctrl_handler_setup(&hgt->ctrls);
|
|
|
+
|
|
|
+ return hgt;
|
|
|
+}
|
Niklas Söderlund