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10#include <linux/device.h>
11#include <linux/gfp.h>
12
13#include <media/v4l2-subdev.h>
14#include <media/videobuf2-vmalloc.h>
15
16#include "vsp1.h"
17#include "vsp1_dl.h"
18#include "vsp1_hgo.h"
19
20#define HGO_DATA_SIZE ((2 + 256) * 4)
21
22
23
24
25
26static inline u32 vsp1_hgo_read(struct vsp1_hgo *hgo, u32 reg)
27{
28 return vsp1_read(hgo->histo.entity.vsp1, reg);
29}
30
31static inline void vsp1_hgo_write(struct vsp1_hgo *hgo,
32 struct vsp1_dl_body *dlb, u32 reg, u32 data)
33{
34 vsp1_dl_body_write(dlb, reg, data);
35}
36
37
38
39
40
41void vsp1_hgo_frame_end(struct vsp1_entity *entity)
42{
43 struct vsp1_hgo *hgo = to_hgo(&entity->subdev);
44 struct vsp1_histogram_buffer *buf;
45 unsigned int i;
46 size_t size;
47 u32 *data;
48
49 buf = vsp1_histogram_buffer_get(&hgo->histo);
50 if (!buf)
51 return;
52
53 data = buf->addr;
54
55 if (hgo->num_bins == 256) {
56 *data++ = vsp1_hgo_read(hgo, VI6_HGO_G_MAXMIN);
57 *data++ = vsp1_hgo_read(hgo, VI6_HGO_G_SUM);
58
59 for (i = 0; i < 256; ++i) {
60 vsp1_write(hgo->histo.entity.vsp1,
61 VI6_HGO_EXT_HIST_ADDR, i);
62 *data++ = vsp1_hgo_read(hgo, VI6_HGO_EXT_HIST_DATA);
63 }
64
65 size = (2 + 256) * sizeof(u32);
66 } else if (hgo->max_rgb) {
67 *data++ = vsp1_hgo_read(hgo, VI6_HGO_G_MAXMIN);
68 *data++ = vsp1_hgo_read(hgo, VI6_HGO_G_SUM);
69
70 for (i = 0; i < 64; ++i)
71 *data++ = vsp1_hgo_read(hgo, VI6_HGO_G_HISTO(i));
72
73 size = (2 + 64) * sizeof(u32);
74 } else {
75 *data++ = vsp1_hgo_read(hgo, VI6_HGO_R_MAXMIN);
76 *data++ = vsp1_hgo_read(hgo, VI6_HGO_G_MAXMIN);
77 *data++ = vsp1_hgo_read(hgo, VI6_HGO_B_MAXMIN);
78
79 *data++ = vsp1_hgo_read(hgo, VI6_HGO_R_SUM);
80 *data++ = vsp1_hgo_read(hgo, VI6_HGO_G_SUM);
81 *data++ = vsp1_hgo_read(hgo, VI6_HGO_B_SUM);
82
83 for (i = 0; i < 64; ++i) {
84 data[i] = vsp1_hgo_read(hgo, VI6_HGO_R_HISTO(i));
85 data[i+64] = vsp1_hgo_read(hgo, VI6_HGO_G_HISTO(i));
86 data[i+128] = vsp1_hgo_read(hgo, VI6_HGO_B_HISTO(i));
87 }
88
89 size = (6 + 64 * 3) * sizeof(u32);
90 }
91
92 vsp1_histogram_buffer_complete(&hgo->histo, buf, size);
93}
94
95
96
97
98
99#define V4L2_CID_VSP1_HGO_MAX_RGB (V4L2_CID_USER_BASE | 0x1001)
100#define V4L2_CID_VSP1_HGO_NUM_BINS (V4L2_CID_USER_BASE | 0x1002)
101
102static const struct v4l2_ctrl_config hgo_max_rgb_control = {
103 .id = V4L2_CID_VSP1_HGO_MAX_RGB,
104 .name = "Maximum RGB Mode",
105 .type = V4L2_CTRL_TYPE_BOOLEAN,
106 .min = 0,
107 .max = 1,
108 .def = 0,
109 .step = 1,
110 .flags = V4L2_CTRL_FLAG_MODIFY_LAYOUT,
111};
112
113static const s64 hgo_num_bins[] = {
114 64, 256,
115};
116
117static const struct v4l2_ctrl_config hgo_num_bins_control = {
118 .id = V4L2_CID_VSP1_HGO_NUM_BINS,
119 .name = "Number of Bins",
120 .type = V4L2_CTRL_TYPE_INTEGER_MENU,
121 .min = 0,
122 .max = 1,
123 .def = 0,
124 .qmenu_int = hgo_num_bins,
125 .flags = V4L2_CTRL_FLAG_MODIFY_LAYOUT,
126};
127
128
129
130
131
132static void hgo_configure_stream(struct vsp1_entity *entity,
133 struct vsp1_pipeline *pipe,
134 struct vsp1_dl_body *dlb)
135{
136 struct vsp1_hgo *hgo = to_hgo(&entity->subdev);
137 struct v4l2_rect *compose;
138 struct v4l2_rect *crop;
139 unsigned int hratio;
140 unsigned int vratio;
141
142 crop = vsp1_entity_get_pad_selection(entity, entity->config,
143 HISTO_PAD_SINK, V4L2_SEL_TGT_CROP);
144 compose = vsp1_entity_get_pad_selection(entity, entity->config,
145 HISTO_PAD_SINK,
146 V4L2_SEL_TGT_COMPOSE);
147
148 vsp1_hgo_write(hgo, dlb, VI6_HGO_REGRST, VI6_HGO_REGRST_RCLEA);
149
150 vsp1_hgo_write(hgo, dlb, VI6_HGO_OFFSET,
151 (crop->left << VI6_HGO_OFFSET_HOFFSET_SHIFT) |
152 (crop->top << VI6_HGO_OFFSET_VOFFSET_SHIFT));
153 vsp1_hgo_write(hgo, dlb, VI6_HGO_SIZE,
154 (crop->width << VI6_HGO_SIZE_HSIZE_SHIFT) |
155 (crop->height << VI6_HGO_SIZE_VSIZE_SHIFT));
156
157 mutex_lock(hgo->ctrls.handler.lock);
158 hgo->max_rgb = hgo->ctrls.max_rgb->cur.val;
159 if (hgo->ctrls.num_bins)
160 hgo->num_bins = hgo_num_bins[hgo->ctrls.num_bins->cur.val];
161 mutex_unlock(hgo->ctrls.handler.lock);
162
163 hratio = crop->width * 2 / compose->width / 3;
164 vratio = crop->height * 2 / compose->height / 3;
165 vsp1_hgo_write(hgo, dlb, VI6_HGO_MODE,
166 (hgo->num_bins == 256 ? VI6_HGO_MODE_STEP : 0) |
167 (hgo->max_rgb ? VI6_HGO_MODE_MAXRGB : 0) |
168 (hratio << VI6_HGO_MODE_HRATIO_SHIFT) |
169 (vratio << VI6_HGO_MODE_VRATIO_SHIFT));
170}
171
172static const struct vsp1_entity_operations hgo_entity_ops = {
173 .configure_stream = hgo_configure_stream,
174 .destroy = vsp1_histogram_destroy,
175};
176
177
178
179
180
181static const unsigned int hgo_mbus_formats[] = {
182 MEDIA_BUS_FMT_AYUV8_1X32,
183 MEDIA_BUS_FMT_ARGB8888_1X32,
184 MEDIA_BUS_FMT_AHSV8888_1X32,
185};
186
187struct vsp1_hgo *vsp1_hgo_create(struct vsp1_device *vsp1)
188{
189 struct vsp1_hgo *hgo;
190 int ret;
191
192 hgo = devm_kzalloc(vsp1->dev, sizeof(*hgo), GFP_KERNEL);
193 if (hgo == NULL)
194 return ERR_PTR(-ENOMEM);
195
196
197 v4l2_ctrl_handler_init(&hgo->ctrls.handler,
198 vsp1->info->gen == 3 ? 2 : 1);
199 hgo->ctrls.max_rgb = v4l2_ctrl_new_custom(&hgo->ctrls.handler,
200 &hgo_max_rgb_control, NULL);
201 if (vsp1->info->gen == 3)
202 hgo->ctrls.num_bins =
203 v4l2_ctrl_new_custom(&hgo->ctrls.handler,
204 &hgo_num_bins_control, NULL);
205
206 hgo->max_rgb = false;
207 hgo->num_bins = 64;
208
209 hgo->histo.entity.subdev.ctrl_handler = &hgo->ctrls.handler;
210
211
212 ret = vsp1_histogram_init(vsp1, &hgo->histo, VSP1_ENTITY_HGO, "hgo",
213 &hgo_entity_ops, hgo_mbus_formats,
214 ARRAY_SIZE(hgo_mbus_formats),
215 HGO_DATA_SIZE, V4L2_META_FMT_VSP1_HGO);
216 if (ret < 0) {
217 vsp1_entity_destroy(&hgo->histo.entity);
218 return ERR_PTR(ret);
219 }
220
221 return hgo;
222}
223