1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2016 MediaTek Inc.
8 #ifndef _MTK_VCODEC_DRV_H_
9 #define _MTK_VCODEC_DRV_H_
11 #include <linux/platform_device.h>
12 #include <linux/videodev2.h>
13 #include <media/v4l2-ctrls.h>
14 #include <media/v4l2-device.h>
15 #include <media/v4l2-ioctl.h>
16 #include <media/videobuf2-core.h>
17 #include "mtk_vcodec_util.h"
19 #define MTK_VCODEC_DRV_NAME "mtk_vcodec_drv"
20 #define MTK_VCODEC_DEC_NAME "mtk-vcodec-dec"
21 #define MTK_VCODEC_ENC_NAME "mtk-vcodec-enc"
22 #define MTK_PLATFORM_STR "platform:mt8173"
24 #define MTK_VCODEC_MAX_PLANES 3
25 #define MTK_V4L2_BENCHMARK 0
26 #define WAIT_INTR_TIMEOUT_MS 1000
29 * enum mtk_hw_reg_idx - MTK hw register base index
44 NUM_MAX_VDEC_REG_BASE,
46 VENC_SYS = NUM_MAX_VDEC_REG_BASE,
49 NUM_MAX_VCODEC_REG_BASE
53 * enum mtk_instance_type - The type of an MTK Vcodec instance.
55 enum mtk_instance_type {
61 * enum mtk_instance_state - The state of an MTK Vcodec instance.
62 * @MTK_STATE_FREE: default state when instance is created
63 * @MTK_STATE_INIT: vcodec instance is initialized
64 * @MTK_STATE_HEADER: vdec had sps/pps header parsed or venc
65 * had sps/pps header encoded
66 * @MTK_STATE_FLUSH: vdec is flushing. Only used by decoder
67 * @MTK_STATE_ABORT: vcodec should be aborted
69 enum mtk_instance_state {
78 * enum mtk_encode_param - General encoding parameters type
80 enum mtk_encode_param {
81 MTK_ENCODE_PARAM_NONE = 0,
82 MTK_ENCODE_PARAM_BITRATE = (1 << 0),
83 MTK_ENCODE_PARAM_FRAMERATE = (1 << 1),
84 MTK_ENCODE_PARAM_INTRA_PERIOD = (1 << 2),
85 MTK_ENCODE_PARAM_FORCE_INTRA = (1 << 3),
86 MTK_ENCODE_PARAM_GOP_SIZE = (1 << 4),
96 * struct mtk_video_fmt - Structure used to store information about pixelformats
98 struct mtk_video_fmt {
100 enum mtk_fmt_type type;
106 * struct mtk_codec_framesizes - Structure used to store information about
109 struct mtk_codec_framesizes {
111 struct v4l2_frmsize_stepwise stepwise;
115 * enum mtk_q_type - Type of queue
123 * struct mtk_q_data - Structure used to store information about queue
126 unsigned int visible_width;
127 unsigned int visible_height;
128 unsigned int coded_width;
129 unsigned int coded_height;
130 enum v4l2_field field;
131 unsigned int bytesperline[MTK_VCODEC_MAX_PLANES];
132 unsigned int sizeimage[MTK_VCODEC_MAX_PLANES];
133 const struct mtk_video_fmt *fmt;
137 * struct mtk_enc_params - General encoding parameters
138 * @bitrate: target bitrate in bits per second
139 * @num_b_frame: number of b frames between p-frame
140 * @rc_frame: frame based rate control
141 * @rc_mb: macroblock based rate control
142 * @seq_hdr_mode: H.264 sequence header is encoded separately or joined
143 * with the first frame
144 * @intra_period: I frame period
145 * @gop_size: group of picture size, it's used as the intra frame period
146 * @framerate_num: frame rate numerator. ex: framerate_num=30 and
147 * framerate_denom=1 means FPS is 30
148 * @framerate_denom: frame rate denominator. ex: framerate_num=30 and
149 * framerate_denom=1 means FPS is 30
150 * @h264_max_qp: Max value for H.264 quantization parameter
151 * @h264_profile: V4L2 defined H.264 profile
152 * @h264_level: V4L2 defined H.264 level
153 * @force_intra: force/insert intra frame
155 struct mtk_enc_params {
156 unsigned int bitrate;
157 unsigned int num_b_frame;
158 unsigned int rc_frame;
160 unsigned int seq_hdr_mode;
161 unsigned int intra_period;
162 unsigned int gop_size;
163 unsigned int framerate_num;
164 unsigned int framerate_denom;
165 unsigned int h264_max_qp;
166 unsigned int h264_profile;
167 unsigned int h264_level;
168 unsigned int force_intra;
172 * struct mtk_vcodec_clk_info - Structure used to store clock name
174 struct mtk_vcodec_clk_info {
175 const char *clk_name;
176 struct clk *vcodec_clk;
180 * struct mtk_vcodec_clk - Structure used to store vcodec clock information
182 struct mtk_vcodec_clk {
183 struct mtk_vcodec_clk_info *clk_info;
188 * struct mtk_vcodec_pm - Power management data structure
190 struct mtk_vcodec_pm {
191 struct mtk_vcodec_clk vdec_clk;
192 struct device *larbvdec;
194 struct mtk_vcodec_clk venc_clk;
195 struct device *larbvenc;
197 struct mtk_vcodec_dev *mtkdev;
201 * struct vdec_pic_info - picture size information
202 * @pic_w: picture width
203 * @pic_h: picture height
204 * @buf_w: picture buffer width (64 aligned up from pic_w)
205 * @buf_h: picture buffer heiht (64 aligned up from pic_h)
206 * @fb_sz: bitstream size of each plane
207 * E.g. suppose picture size is 176x144,
208 * buffer size will be aligned to 176x160.
209 * @cap_fourcc: fourcc number(may changed when resolution change)
210 * @reserved: align struct to 64-bit in order to adjust 32-bit and 64-bit os.
212 struct vdec_pic_info {
217 unsigned int fb_sz[VIDEO_MAX_PLANES];
218 unsigned int cap_fourcc;
219 unsigned int reserved;
223 * struct mtk_vcodec_ctx - Context (instance) private data.
225 * @type: type of the instance - decoder or encoder
226 * @dev: pointer to the mtk_vcodec_dev of the device
227 * @list: link to ctx_list of mtk_vcodec_dev
228 * @fh: struct v4l2_fh
229 * @m2m_ctx: pointer to the v4l2_m2m_ctx of the context
230 * @q_data: store information of input and output queue
232 * @id: index of the context that this structure describes
233 * @state: state of the context
234 * @param_change: indicate encode parameter type
235 * @enc_params: encoding parameters
236 * @dec_if: hooked decoder driver interface
237 * @enc_if: hoooked encoder driver interface
238 * @drv_handle: driver handle for specific decode/encode instance
240 * @picinfo: store picture info after header parsing
241 * @dpb_size: store dpb count after header parsing
242 * @int_cond: variable used by the waitqueue
243 * @int_type: type of the last interrupt
244 * @queue: waitqueue that can be used to wait for this context to
246 * @irq_status: irq status
248 * @ctrl_hdl: handler for v4l2 framework
249 * @decode_work: worker for the decoding
250 * @encode_work: worker for the encoding
251 * @last_decoded_picinfo: pic information get from latest decode
252 * @empty_flush_buf: a fake size-0 capture buffer that indicates flush
254 * @colorspace: enum v4l2_colorspace; supplemental to pixelformat
255 * @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
256 * @quantization: enum v4l2_quantization, colorspace quantization
257 * @xfer_func: enum v4l2_xfer_func, colorspace transfer function
258 * @lock: protect variables accessed by V4L2 threads and worker thread such as
261 struct mtk_vcodec_ctx {
262 enum mtk_instance_type type;
263 struct mtk_vcodec_dev *dev;
264 struct list_head list;
267 struct v4l2_m2m_ctx *m2m_ctx;
268 struct mtk_q_data q_data[2];
270 enum mtk_instance_state state;
271 enum mtk_encode_param param_change;
272 struct mtk_enc_params enc_params;
274 const struct vdec_common_if *dec_if;
275 const struct venc_common_if *enc_if;
278 struct vdec_pic_info picinfo;
283 wait_queue_head_t queue;
284 unsigned int irq_status;
286 struct v4l2_ctrl_handler ctrl_hdl;
287 struct work_struct decode_work;
288 struct work_struct encode_work;
289 struct vdec_pic_info last_decoded_picinfo;
290 struct mtk_video_dec_buf *empty_flush_buf;
292 enum v4l2_colorspace colorspace;
293 enum v4l2_ycbcr_encoding ycbcr_enc;
294 enum v4l2_quantization quantization;
295 enum v4l2_xfer_func xfer_func;
297 int decoded_frame_cnt;
308 * struct mtk_vcodec_enc_pdata - compatible data for each IC
310 * @chip: chip this encoder is compatible with
312 * @uses_ext: whether the encoder uses the extended firmware messaging format
313 * @min_birate: minimum supported encoding bitrate
314 * @max_bitrate: maximum supported encoding bitrate
315 * @capture_formats: array of supported capture formats
316 * @num_capture_formats: number of entries in capture_formats
317 * @output_formats: array of supported output formats
318 * @num_output_formats: number of entries in output_formats
319 * @core_id: stand for h264 or vp8 encode index
321 struct mtk_vcodec_enc_pdata {
325 unsigned long min_bitrate;
326 unsigned long max_bitrate;
327 const struct mtk_video_fmt *capture_formats;
328 size_t num_capture_formats;
329 const struct mtk_video_fmt *output_formats;
330 size_t num_output_formats;
334 #define MTK_ENC_CTX_IS_EXT(ctx) ((ctx)->dev->venc_pdata->uses_ext)
337 * struct mtk_vcodec_dev - driver data
338 * @v4l2_dev: V4L2 device to register video devices for.
339 * @vfd_dec: Video device for decoder
340 * @vfd_enc: Video device for encoder.
342 * @m2m_dev_dec: m2m device for decoder
343 * @m2m_dev_enc: m2m device for encoder.
344 * @plat_dev: platform device
345 * @ctx_list: list of struct mtk_vcodec_ctx
346 * @irqlock: protect data access by irq handler and work thread
347 * @curr_ctx: The context that is waiting for codec hardware
349 * @reg_base: Mapped address of MTK Vcodec registers.
351 * @fw_handler: used to communicate with the firmware.
352 * @id_counter: used to identify current opened instance
354 * @encode_workqueue: encode work queue
356 * @int_cond: used to identify interrupt condition happen
357 * @int_type: used to identify what kind of interrupt condition happen
358 * @dev_mutex: video_device lock
359 * @queue: waitqueue for waiting for completion of device commands
361 * @dec_irq: decoder irq resource
362 * @enc_irq: h264 encoder irq resource
364 * @dec_mutex: decoder hardware lock
365 * @enc_mutex: encoder hardware lock.
367 * @pm: power management control
368 * @dec_capability: used to identify decode capability, ex: 4k
369 * @enc_capability: used to identify encode capability
371 struct mtk_vcodec_dev {
372 struct v4l2_device v4l2_dev;
373 struct video_device *vfd_dec;
374 struct video_device *vfd_enc;
376 struct v4l2_m2m_dev *m2m_dev_dec;
377 struct v4l2_m2m_dev *m2m_dev_enc;
378 struct platform_device *plat_dev;
379 struct list_head ctx_list;
381 struct mtk_vcodec_ctx *curr_ctx;
382 void __iomem *reg_base[NUM_MAX_VCODEC_REG_BASE];
383 const struct mtk_vcodec_enc_pdata *venc_pdata;
385 struct mtk_vcodec_fw *fw_handler;
387 unsigned long id_counter;
389 struct workqueue_struct *decode_workqueue;
390 struct workqueue_struct *encode_workqueue;
393 struct mutex dev_mutex;
394 wait_queue_head_t queue;
399 struct mutex dec_mutex;
400 struct mutex enc_mutex;
402 struct mtk_vcodec_pm pm;
403 unsigned int dec_capability;
404 unsigned int enc_capability;
407 static inline struct mtk_vcodec_ctx *fh_to_ctx(struct v4l2_fh *fh)
409 return container_of(fh, struct mtk_vcodec_ctx, fh);
412 static inline struct mtk_vcodec_ctx *ctrl_to_ctx(struct v4l2_ctrl *ctrl)
414 return container_of(ctrl->handler, struct mtk_vcodec_ctx, ctrl_hdl);
417 #endif /* _MTK_VCODEC_DRV_H_ */