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14#include <linux/device.h>
15#include <linux/gfp.h>
16
17#include <media/v4l2-subdev.h>
18
19#include "vsp1.h"
20#include "vsp1_dl.h"
21#include "vsp1_lut.h"
22
23#define LUT_MIN_SIZE 4U
24#define LUT_MAX_SIZE 8190U
25
26
27
28
29
30static inline void vsp1_lut_write(struct vsp1_lut *lut, struct vsp1_dl_list *dl,
31 u32 reg, u32 data)
32{
33 vsp1_dl_list_write(dl, reg, data);
34}
35
36
37
38
39
40#define V4L2_CID_VSP1_LUT_TABLE (V4L2_CID_USER_BASE | 0x1001)
41
42static int lut_set_table(struct vsp1_lut *lut, struct v4l2_ctrl *ctrl)
43{
44 struct vsp1_dl_body *dlb;
45 unsigned int i;
46
47 dlb = vsp1_dl_fragment_alloc(lut->entity.vsp1, 256);
48 if (!dlb)
49 return -ENOMEM;
50
51 for (i = 0; i < 256; ++i)
52 vsp1_dl_fragment_write(dlb, VI6_LUT_TABLE + 4 * i,
53 ctrl->p_new.p_u32[i]);
54
55 spin_lock_irq(&lut->lock);
56 swap(lut->lut, dlb);
57 spin_unlock_irq(&lut->lock);
58
59 vsp1_dl_fragment_free(dlb);
60 return 0;
61}
62
63static int lut_s_ctrl(struct v4l2_ctrl *ctrl)
64{
65 struct vsp1_lut *lut =
66 container_of(ctrl->handler, struct vsp1_lut, ctrls);
67
68 switch (ctrl->id) {
69 case V4L2_CID_VSP1_LUT_TABLE:
70 lut_set_table(lut, ctrl);
71 break;
72 }
73
74 return 0;
75}
76
77static const struct v4l2_ctrl_ops lut_ctrl_ops = {
78 .s_ctrl = lut_s_ctrl,
79};
80
81static const struct v4l2_ctrl_config lut_table_control = {
82 .ops = &lut_ctrl_ops,
83 .id = V4L2_CID_VSP1_LUT_TABLE,
84 .name = "Look-Up Table",
85 .type = V4L2_CTRL_TYPE_U32,
86 .min = 0x00000000,
87 .max = 0x00ffffff,
88 .step = 1,
89 .def = 0,
90 .dims = { 256},
91};
92
93
94
95
96
97static int lut_enum_mbus_code(struct v4l2_subdev *subdev,
98 struct v4l2_subdev_pad_config *cfg,
99 struct v4l2_subdev_mbus_code_enum *code)
100{
101 static const unsigned int codes[] = {
102 MEDIA_BUS_FMT_ARGB8888_1X32,
103 MEDIA_BUS_FMT_AHSV8888_1X32,
104 MEDIA_BUS_FMT_AYUV8_1X32,
105 };
106
107 return vsp1_subdev_enum_mbus_code(subdev, cfg, code, codes,
108 ARRAY_SIZE(codes));
109}
110
111static int lut_enum_frame_size(struct v4l2_subdev *subdev,
112 struct v4l2_subdev_pad_config *cfg,
113 struct v4l2_subdev_frame_size_enum *fse)
114{
115 return vsp1_subdev_enum_frame_size(subdev, cfg, fse, LUT_MIN_SIZE,
116 LUT_MIN_SIZE, LUT_MAX_SIZE,
117 LUT_MAX_SIZE);
118}
119
120static int lut_set_format(struct v4l2_subdev *subdev,
121 struct v4l2_subdev_pad_config *cfg,
122 struct v4l2_subdev_format *fmt)
123{
124 struct vsp1_lut *lut = to_lut(subdev);
125 struct v4l2_subdev_pad_config *config;
126 struct v4l2_mbus_framefmt *format;
127
128 config = vsp1_entity_get_pad_config(&lut->entity, cfg, fmt->which);
129 if (!config)
130 return -EINVAL;
131
132
133 if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
134 fmt->format.code != MEDIA_BUS_FMT_AHSV8888_1X32 &&
135 fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32)
136 fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32;
137
138 format = vsp1_entity_get_pad_format(&lut->entity, config, fmt->pad);
139
140 if (fmt->pad == LUT_PAD_SOURCE) {
141
142 fmt->format = *format;
143 return 0;
144 }
145
146 format->code = fmt->format.code;
147 format->width = clamp_t(unsigned int, fmt->format.width,
148 LUT_MIN_SIZE, LUT_MAX_SIZE);
149 format->height = clamp_t(unsigned int, fmt->format.height,
150 LUT_MIN_SIZE, LUT_MAX_SIZE);
151 format->field = V4L2_FIELD_NONE;
152 format->colorspace = V4L2_COLORSPACE_SRGB;
153
154 fmt->format = *format;
155
156
157 format = vsp1_entity_get_pad_format(&lut->entity, config,
158 LUT_PAD_SOURCE);
159 *format = fmt->format;
160
161 return 0;
162}
163
164
165
166
167
168static const struct v4l2_subdev_pad_ops lut_pad_ops = {
169 .init_cfg = vsp1_entity_init_cfg,
170 .enum_mbus_code = lut_enum_mbus_code,
171 .enum_frame_size = lut_enum_frame_size,
172 .get_fmt = vsp1_subdev_get_pad_format,
173 .set_fmt = lut_set_format,
174};
175
176static const struct v4l2_subdev_ops lut_ops = {
177 .pad = &lut_pad_ops,
178};
179
180
181
182
183
184static void lut_configure(struct vsp1_entity *entity,
185 struct vsp1_pipeline *pipe,
186 struct vsp1_dl_list *dl, bool full)
187{
188 struct vsp1_lut *lut = to_lut(&entity->subdev);
189 struct vsp1_dl_body *dlb;
190 unsigned long flags;
191
192 if (full) {
193 vsp1_lut_write(lut, dl, VI6_LUT_CTRL, VI6_LUT_CTRL_EN);
194 return;
195 }
196
197 spin_lock_irqsave(&lut->lock, flags);
198 dlb = lut->lut;
199 lut->lut = NULL;
200 spin_unlock_irqrestore(&lut->lock, flags);
201
202 if (dlb)
203 vsp1_dl_list_add_fragment(dl, dlb);
204}
205
206static const struct vsp1_entity_operations lut_entity_ops = {
207 .configure = lut_configure,
208};
209
210
211
212
213
214struct vsp1_lut *vsp1_lut_create(struct vsp1_device *vsp1)
215{
216 struct vsp1_lut *lut;
217 int ret;
218
219 lut = devm_kzalloc(vsp1->dev, sizeof(*lut), GFP_KERNEL);
220 if (lut == NULL)
221 return ERR_PTR(-ENOMEM);
222
223 spin_lock_init(&lut->lock);
224
225 lut->entity.ops = &lut_entity_ops;
226 lut->entity.type = VSP1_ENTITY_LUT;
227
228 ret = vsp1_entity_init(vsp1, &lut->entity, "lut", 2, &lut_ops,
229 MEDIA_ENT_F_PROC_VIDEO_LUT);
230 if (ret < 0)
231 return ERR_PTR(ret);
232
233
234 v4l2_ctrl_handler_init(&lut->ctrls, 1);
235 v4l2_ctrl_new_custom(&lut->ctrls, &lut_table_control, NULL);
236
237 lut->entity.subdev.ctrl_handler = &lut->ctrls;
238
239 if (lut->ctrls.error) {
240 dev_err(vsp1->dev, "lut: failed to initialize controls\n");
241 ret = lut->ctrls.error;
242 vsp1_entity_destroy(&lut->entity);
243 return ERR_PTR(ret);
244 }
245
246 v4l2_ctrl_handler_setup(&lut->ctrls);
247
248 return lut;
249}
250
