1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * V4L2 Media Controller Driver for Freescale i.MX5/6 SOC
4 *
5 * Copyright (c) 2016 Mentor Graphics Inc.
6 */
7 #ifndef _IMX_MEDIA_H
8 #define _IMX_MEDIA_H
9
10 #include <linux/platform_device.h>
11 #include <media/v4l2-ctrls.h>
12 #include <media/v4l2-device.h>
13 #include <media/v4l2-fwnode.h>
14 #include <media/v4l2-subdev.h>
15 #include <media/videobuf2-dma-contig.h>
16 #include <video/imx-ipu-v3.h>
17
18 #define IMX_MEDIA_DEF_PIX_WIDTH 640
19 #define IMX_MEDIA_DEF_PIX_HEIGHT 480
20
21 /*
22 * Enumeration of the IPU internal sub-devices
23 */
24 enum {
25 IPU_CSI0 = 0,
26 IPU_CSI1,
27 IPU_VDIC,
28 IPU_IC_PRP,
29 IPU_IC_PRPENC,
30 IPU_IC_PRPVF,
31 NUM_IPU_SUBDEVS,
32 };
33
34 /*
35 * Pad definitions for the subdevs with multiple source or
36 * sink pads
37 */
38
39 /* ipu_csi */
40 enum {
41 CSI_SINK_PAD = 0,
42 CSI_SRC_PAD_DIRECT,
43 CSI_SRC_PAD_IDMAC,
44 CSI_NUM_PADS,
45 };
46
47 /* ipu_vdic */
48 enum {
49 VDIC_SINK_PAD_DIRECT = 0,
50 VDIC_SINK_PAD_IDMAC,
51 VDIC_SRC_PAD_DIRECT,
52 VDIC_NUM_PADS,
53 };
54
55 /* ipu_ic_prp */
56 enum {
57 PRP_SINK_PAD = 0,
58 PRP_SRC_PAD_PRPENC,
59 PRP_SRC_PAD_PRPVF,
60 PRP_NUM_PADS,
61 };
62
63 /* ipu_ic_prpencvf */
64 enum {
65 PRPENCVF_SINK_PAD = 0,
66 PRPENCVF_SRC_PAD,
67 PRPENCVF_NUM_PADS,
68 };
69
70 /* How long to wait for EOF interrupts in the buffer-capture subdevs */
71 #define IMX_MEDIA_EOF_TIMEOUT 2000
72
73 struct imx_media_pixfmt {
74 /* the in-memory FourCC pixel format */
75 u32 fourcc;
76 /*
77 * the set of equivalent media bus codes for the fourcc.
78 * NOTE! codes pointer is NULL for in-memory-only formats.
79 */
80 const u32 *codes;
81 int bpp; /* total bpp */
82 /* cycles per pixel for generic (bayer) formats for the parallel bus */
83 int cycles;
84 enum ipu_color_space cs;
85 bool planar; /* is a planar format */
86 bool bayer; /* is a raw bayer format */
87 bool ipufmt; /* is one of the IPU internal formats */
88 };
89
90 enum imx_pixfmt_sel {
91 PIXFMT_SEL_YUV = BIT(0), /* select YUV formats */
92 PIXFMT_SEL_RGB = BIT(1), /* select RGB formats */
93 PIXFMT_SEL_BAYER = BIT(2), /* select BAYER formats */
94 PIXFMT_SEL_IPU = BIT(3), /* select IPU-internal formats */
95 PIXFMT_SEL_YUV_RGB = PIXFMT_SEL_YUV | PIXFMT_SEL_RGB,
96 PIXFMT_SEL_ANY = PIXFMT_SEL_YUV | PIXFMT_SEL_RGB | PIXFMT_SEL_BAYER,
97 };
98
99 struct imx_media_buffer {
100 struct vb2_v4l2_buffer vbuf; /* v4l buffer must be first */
101 struct list_head list;
102 };
103
104 struct imx_media_video_dev {
105 struct video_device *vfd;
106
107 /* the user format */
108 struct v4l2_pix_format fmt;
109 /* the compose rectangle */
110 struct v4l2_rect compose;
111 const struct imx_media_pixfmt *cc;
112
113 /* links this vdev to master list */
114 struct list_head list;
115 };
116
to_imx_media_vb(struct vb2_buffer * vb)117 static inline struct imx_media_buffer *to_imx_media_vb(struct vb2_buffer *vb)
118 {
119 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
120
121 return container_of(vbuf, struct imx_media_buffer, vbuf);
122 }
123
124 /*
125 * to support control inheritance to video devices, this
126 * retrieves a pad's list_head of video devices that can
127 * be reached from the pad. Note that only the lists in
128 * source pads get populated, sink pads have empty lists.
129 */
130 static inline struct list_head *
to_pad_vdev_list(struct v4l2_subdev * sd,int pad_index)131 to_pad_vdev_list(struct v4l2_subdev *sd, int pad_index)
132 {
133 struct list_head *vdev_list = sd->host_priv;
134
135 return vdev_list ? &vdev_list[pad_index] : NULL;
136 }
137
138 /* an entry in a pad's video device list */
139 struct imx_media_pad_vdev {
140 struct imx_media_video_dev *vdev;
141 struct list_head list;
142 };
143
144 struct imx_media_dev {
145 struct media_device md;
146 struct v4l2_device v4l2_dev;
147
148 /* the pipeline object */
149 struct media_pipeline pipe;
150
151 struct mutex mutex; /* protect elements below */
152
153 /* master video device list */
154 struct list_head vdev_list;
155
156 /* IPUs this media driver control, valid after subdevs bound */
157 struct ipu_soc *ipu[2];
158
159 /* for async subdev registration */
160 struct v4l2_async_notifier notifier;
161
162 /* IC scaler/CSC mem2mem video device */
163 struct imx_media_video_dev *m2m_vdev;
164
165 /* the IPU internal subdev's registered synchronously */
166 struct v4l2_subdev *sync_sd[2][NUM_IPU_SUBDEVS];
167 };
168
169 /* imx-media-utils.c */
170 const struct imx_media_pixfmt *
171 imx_media_find_pixel_format(u32 fourcc, enum imx_pixfmt_sel sel);
172 int imx_media_enum_pixel_formats(u32 *fourcc, u32 index,
173 enum imx_pixfmt_sel sel, u32 code);
174 const struct imx_media_pixfmt *
175 imx_media_find_mbus_format(u32 code, enum imx_pixfmt_sel sel);
176 int imx_media_enum_mbus_formats(u32 *code, u32 index,
177 enum imx_pixfmt_sel sel);
178
179 static inline const struct imx_media_pixfmt *
imx_media_find_ipu_format(u32 code,enum imx_pixfmt_sel fmt_sel)180 imx_media_find_ipu_format(u32 code, enum imx_pixfmt_sel fmt_sel)
181 {
182 return imx_media_find_mbus_format(code, fmt_sel | PIXFMT_SEL_IPU);
183 }
184
imx_media_enum_ipu_formats(u32 * code,u32 index,enum imx_pixfmt_sel fmt_sel)185 static inline int imx_media_enum_ipu_formats(u32 *code, u32 index,
186 enum imx_pixfmt_sel fmt_sel)
187 {
188 return imx_media_enum_mbus_formats(code, index,
189 fmt_sel | PIXFMT_SEL_IPU);
190 }
191
192 int imx_media_init_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
193 u32 width, u32 height, u32 code, u32 field,
194 const struct imx_media_pixfmt **cc);
195 int imx_media_init_cfg(struct v4l2_subdev *sd,
196 struct v4l2_subdev_state *sd_state);
197 void imx_media_try_colorimetry(struct v4l2_mbus_framefmt *tryfmt,
198 bool ic_route);
199 int imx_media_mbus_fmt_to_pix_fmt(struct v4l2_pix_format *pix,
200 const struct v4l2_mbus_framefmt *mbus,
201 const struct imx_media_pixfmt *cc);
202 void imx_media_grp_id_to_sd_name(char *sd_name, int sz,
203 u32 grp_id, int ipu_id);
204 void imx_media_add_video_device(struct imx_media_dev *imxmd,
205 struct imx_media_video_dev *vdev);
206 struct media_pad *
207 imx_media_pipeline_pad(struct media_entity *start_entity, u32 grp_id,
208 enum v4l2_buf_type buftype, bool upstream);
209 struct v4l2_subdev *
210 imx_media_pipeline_subdev(struct media_entity *start_entity, u32 grp_id,
211 bool upstream);
212
213 struct imx_media_dma_buf {
214 void *virt;
215 dma_addr_t phys;
216 unsigned long len;
217 };
218
219 void imx_media_free_dma_buf(struct device *dev,
220 struct imx_media_dma_buf *buf);
221 int imx_media_alloc_dma_buf(struct device *dev,
222 struct imx_media_dma_buf *buf,
223 int size);
224
225 int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
226 struct media_entity *entity,
227 bool on);
228
229 /* imx-media-dev-common.c */
230 int imx_media_probe_complete(struct v4l2_async_notifier *notifier);
231 struct imx_media_dev *imx_media_dev_init(struct device *dev,
232 const struct media_device_ops *ops);
233 int imx_media_dev_notifier_register(struct imx_media_dev *imxmd,
234 const struct v4l2_async_notifier_operations *ops);
235
236 /* imx-media-fim.c */
237 struct imx_media_fim;
238 void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp);
239 void imx_media_fim_set_stream(struct imx_media_fim *fim,
240 const struct v4l2_fract *frame_interval,
241 bool on);
242 int imx_media_fim_add_controls(struct imx_media_fim *fim);
243 struct imx_media_fim *imx_media_fim_init(struct v4l2_subdev *sd);
244 void imx_media_fim_free(struct imx_media_fim *fim);
245
246 /* imx-media-internal-sd.c */
247 int imx_media_register_ipu_internal_subdevs(struct imx_media_dev *imxmd,
248 struct v4l2_subdev *csi);
249 void imx_media_unregister_ipu_internal_subdevs(struct imx_media_dev *imxmd);
250
251 /* imx-media-of.c */
252 int imx_media_add_of_subdevs(struct imx_media_dev *dev,
253 struct device_node *np);
254
255 /* imx-media-vdic.c */
256 struct v4l2_subdev *imx_media_vdic_register(struct v4l2_device *v4l2_dev,
257 struct device *ipu_dev,
258 struct ipu_soc *ipu,
259 u32 grp_id);
260 int imx_media_vdic_unregister(struct v4l2_subdev *sd);
261
262 /* imx-ic-common.c */
263 struct v4l2_subdev *imx_media_ic_register(struct v4l2_device *v4l2_dev,
264 struct device *ipu_dev,
265 struct ipu_soc *ipu,
266 u32 grp_id);
267 int imx_media_ic_unregister(struct v4l2_subdev *sd);
268
269 /* imx-media-capture.c */
270 struct imx_media_video_dev *
271 imx_media_capture_device_init(struct device *dev, struct v4l2_subdev *src_sd,
272 int pad, bool legacy_api);
273 void imx_media_capture_device_remove(struct imx_media_video_dev *vdev);
274 int imx_media_capture_device_register(struct imx_media_video_dev *vdev,
275 u32 link_flags);
276 void imx_media_capture_device_unregister(struct imx_media_video_dev *vdev);
277 struct imx_media_buffer *
278 imx_media_capture_device_next_buf(struct imx_media_video_dev *vdev);
279 void imx_media_capture_device_error(struct imx_media_video_dev *vdev);
280
281 /* imx-media-csc-scaler.c */
282 struct imx_media_video_dev *
283 imx_media_csc_scaler_device_init(struct imx_media_dev *dev);
284 int imx_media_csc_scaler_device_register(struct imx_media_video_dev *vdev);
285 void imx_media_csc_scaler_device_unregister(struct imx_media_video_dev *vdev);
286
287 /* subdev group ids */
288 #define IMX_MEDIA_GRP_ID_CSI2 BIT(8)
289 #define IMX_MEDIA_GRP_ID_IPU_CSI_BIT 10
290 #define IMX_MEDIA_GRP_ID_IPU_CSI (0x3 << IMX_MEDIA_GRP_ID_IPU_CSI_BIT)
291 #define IMX_MEDIA_GRP_ID_IPU_CSI0 BIT(IMX_MEDIA_GRP_ID_IPU_CSI_BIT)
292 #define IMX_MEDIA_GRP_ID_IPU_CSI1 (2 << IMX_MEDIA_GRP_ID_IPU_CSI_BIT)
293 #define IMX_MEDIA_GRP_ID_IPU_VDIC BIT(12)
294 #define IMX_MEDIA_GRP_ID_IPU_IC_PRP BIT(13)
295 #define IMX_MEDIA_GRP_ID_IPU_IC_PRPENC BIT(14)
296 #define IMX_MEDIA_GRP_ID_IPU_IC_PRPVF BIT(15)
297 #define IMX_MEDIA_GRP_ID_CSI_MUX BIT(16)
298
299 #endif
300