2 * V4L2 Media Controller Driver for Freescale i.MX5/6 SOC
4 * Copyright (c) 2016 Mentor Graphics Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
14 #include <media/v4l2-ctrls.h>
15 #include <media/v4l2-device.h>
16 #include <media/v4l2-fwnode.h>
17 #include <media/v4l2-subdev.h>
18 #include <media/videobuf2-dma-contig.h>
19 #include <video/imx-ipu-v3.h>
22 * This is somewhat arbitrary, but we need at least:
23 * - 4 video devices per IPU
24 * - 3 IC subdevs per IPU
25 * - 1 VDIC subdev per IPU
26 * - 2 CSI subdevs per IPU
27 * - 1 mipi-csi2 receiver subdev
28 * - 2 video-mux subdevs
29 * - 2 camera sensor subdevs per IPU (1 parallel, 1 mipi-csi2)
32 /* max video devices */
33 #define IMX_MEDIA_MAX_VDEVS 8
35 #define IMX_MEDIA_MAX_SUBDEVS 32
36 /* max pads per subdev */
37 #define IMX_MEDIA_MAX_PADS 16
40 * Pad definitions for the subdevs with multiple source or
54 VDIC_SINK_PAD_DIRECT = 0,
70 PRPENCVF_SINK_PAD = 0,
75 /* How long to wait for EOF interrupts in the buffer-capture subdevs */
76 #define IMX_MEDIA_EOF_TIMEOUT 1000
78 struct imx_media_pixfmt {
81 int bpp; /* total bpp */
82 enum ipu_color_space cs;
83 bool planar; /* is a planar format */
84 bool bayer; /* is a raw bayer format */
85 bool ipufmt; /* is one of the IPU internal formats */
88 struct imx_media_buffer {
89 struct vb2_v4l2_buffer vbuf; /* v4l buffer must be first */
90 struct list_head list;
93 struct imx_media_video_dev {
94 struct video_device *vfd;
97 struct v4l2_format fmt;
98 const struct imx_media_pixfmt *cc;
101 static inline struct imx_media_buffer *to_imx_media_vb(struct vb2_buffer *vb)
103 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
105 return container_of(vbuf, struct imx_media_buffer, vbuf);
108 struct imx_media_pad {
110 * list of video devices that can be reached from this pad,
111 * list is only valid for source pads.
113 struct imx_media_video_dev *vdev[IMX_MEDIA_MAX_VDEVS];
117 struct imx_media_internal_sd_platformdata {
118 char sd_name[V4L2_SUBDEV_NAME_SIZE];
123 struct imx_media_subdev {
124 struct v4l2_async_subdev asd;
125 struct v4l2_subdev *sd; /* set when bound */
127 struct imx_media_pad pad[IMX_MEDIA_MAX_PADS];
129 /* the platform device if this is an IPU-internal subdev */
130 struct platform_device *pdev;
133 struct imx_media_dev {
134 struct media_device md;
135 struct v4l2_device v4l2_dev;
137 /* the pipeline object */
138 struct media_pipeline pipe;
140 struct mutex mutex; /* protect elements below */
142 /* master subdevice list */
143 struct imx_media_subdev subdev[IMX_MEDIA_MAX_SUBDEVS];
146 /* master video device list */
147 struct imx_media_video_dev *vdev[IMX_MEDIA_MAX_VDEVS];
150 /* IPUs this media driver control, valid after subdevs bound */
151 struct ipu_soc *ipu[2];
153 /* for async subdev registration */
154 struct v4l2_async_subdev *async_ptrs[IMX_MEDIA_MAX_SUBDEVS];
155 struct v4l2_async_notifier subdev_notifier;
164 const struct imx_media_pixfmt *
165 imx_media_find_format(u32 fourcc, enum codespace_sel cs_sel, bool allow_bayer);
166 int imx_media_enum_format(u32 *fourcc, u32 index, enum codespace_sel cs_sel);
167 const struct imx_media_pixfmt *
168 imx_media_find_mbus_format(u32 code, enum codespace_sel cs_sel,
170 int imx_media_enum_mbus_format(u32 *code, u32 index, enum codespace_sel cs_sel,
172 const struct imx_media_pixfmt *
173 imx_media_find_ipu_format(u32 code, enum codespace_sel cs_sel);
174 int imx_media_enum_ipu_format(u32 *code, u32 index, enum codespace_sel cs_sel);
176 int imx_media_init_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
177 u32 width, u32 height, u32 code, u32 field,
178 const struct imx_media_pixfmt **cc);
179 void imx_media_fill_default_mbus_fields(struct v4l2_mbus_framefmt *tryfmt,
180 struct v4l2_mbus_framefmt *fmt,
182 int imx_media_mbus_fmt_to_pix_fmt(struct v4l2_pix_format *pix,
183 struct v4l2_mbus_framefmt *mbus,
184 const struct imx_media_pixfmt *cc);
185 int imx_media_mbus_fmt_to_ipu_image(struct ipu_image *image,
186 struct v4l2_mbus_framefmt *mbus);
187 int imx_media_ipu_image_to_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
188 struct ipu_image *image);
190 struct imx_media_subdev *
191 imx_media_find_async_subdev(struct imx_media_dev *imxmd,
192 struct device_node *np,
193 const char *devname);
194 struct imx_media_subdev *
195 imx_media_add_async_subdev(struct imx_media_dev *imxmd,
196 struct device_node *np,
197 struct platform_device *pdev);
199 void imx_media_grp_id_to_sd_name(char *sd_name, int sz,
200 u32 grp_id, int ipu_id);
202 int imx_media_add_internal_subdevs(struct imx_media_dev *imxmd);
203 int imx_media_create_internal_links(struct imx_media_dev *imxmd,
204 struct imx_media_subdev *imxsd);
205 void imx_media_remove_internal_subdevs(struct imx_media_dev *imxmd);
207 struct imx_media_subdev *
208 imx_media_find_subdev_by_sd(struct imx_media_dev *imxmd,
209 struct v4l2_subdev *sd);
210 struct imx_media_subdev *
211 imx_media_find_subdev_by_id(struct imx_media_dev *imxmd,
213 int imx_media_add_video_device(struct imx_media_dev *imxmd,
214 struct imx_media_video_dev *vdev);
215 int imx_media_find_mipi_csi2_channel(struct imx_media_dev *imxmd,
216 struct media_entity *start_entity);
218 imx_media_find_upstream_pad(struct imx_media_dev *imxmd,
219 struct media_entity *start_entity,
221 struct imx_media_subdev *
222 imx_media_find_upstream_subdev(struct imx_media_dev *imxmd,
223 struct media_entity *start_entity,
226 struct imx_media_dma_buf {
232 void imx_media_free_dma_buf(struct imx_media_dev *imxmd,
233 struct imx_media_dma_buf *buf);
234 int imx_media_alloc_dma_buf(struct imx_media_dev *imxmd,
235 struct imx_media_dma_buf *buf,
238 int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
239 struct media_entity *entity,
242 /* imx-media-fim.c */
243 struct imx_media_fim;
244 void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp);
245 int imx_media_fim_set_stream(struct imx_media_fim *fim,
246 const struct v4l2_fract *frame_interval,
248 int imx_media_fim_add_controls(struct imx_media_fim *fim);
249 struct imx_media_fim *imx_media_fim_init(struct v4l2_subdev *sd);
250 void imx_media_fim_free(struct imx_media_fim *fim);
253 int imx_media_add_of_subdevs(struct imx_media_dev *dev,
254 struct device_node *np);
255 int imx_media_create_of_links(struct imx_media_dev *imxmd,
256 struct imx_media_subdev *imxsd);
257 int imx_media_create_csi_of_links(struct imx_media_dev *imxmd,
258 struct imx_media_subdev *csi);
260 /* imx-media-capture.c */
261 struct imx_media_video_dev *
262 imx_media_capture_device_init(struct v4l2_subdev *src_sd, int pad);
263 void imx_media_capture_device_remove(struct imx_media_video_dev *vdev);
264 int imx_media_capture_device_register(struct imx_media_video_dev *vdev);
265 void imx_media_capture_device_unregister(struct imx_media_video_dev *vdev);
266 struct imx_media_buffer *
267 imx_media_capture_device_next_buf(struct imx_media_video_dev *vdev);
268 void imx_media_capture_device_set_format(struct imx_media_video_dev *vdev,
269 struct v4l2_pix_format *pix);
270 void imx_media_capture_device_error(struct imx_media_video_dev *vdev);
272 /* subdev group ids */
273 #define IMX_MEDIA_GRP_ID_CSI2 BIT(8)
274 #define IMX_MEDIA_GRP_ID_CSI_BIT 9
275 #define IMX_MEDIA_GRP_ID_CSI (0x3 << IMX_MEDIA_GRP_ID_CSI_BIT)
276 #define IMX_MEDIA_GRP_ID_CSI0 BIT(IMX_MEDIA_GRP_ID_CSI_BIT)
277 #define IMX_MEDIA_GRP_ID_CSI1 (2 << IMX_MEDIA_GRP_ID_CSI_BIT)
278 #define IMX_MEDIA_GRP_ID_VDIC BIT(11)
279 #define IMX_MEDIA_GRP_ID_IC_PRP BIT(12)
280 #define IMX_MEDIA_GRP_ID_IC_PRPENC BIT(13)
281 #define IMX_MEDIA_GRP_ID_IC_PRPVF BIT(14)