1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Cedrus VPU driver
4 *
5 * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
6 * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
7 * Copyright (C) 2018 Bootlin
8 *
9 * Based on the vim2m driver, that is:
10 *
11 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
12 * Pawel Osciak, <pawel@osciak.com>
13 * Marek Szyprowski, <m.szyprowski@samsung.com>
14 */
15
16 #ifndef _CEDRUS_H_
17 #define _CEDRUS_H_
18
19 #include <media/v4l2-ctrls.h>
20 #include <media/v4l2-device.h>
21 #include <media/v4l2-mem2mem.h>
22 #include <media/videobuf2-v4l2.h>
23 #include <media/videobuf2-dma-contig.h>
24
25 #include <linux/iopoll.h>
26 #include <linux/platform_device.h>
27 #include <linux/workqueue.h>
28
29 #define CEDRUS_NAME "cedrus"
30
31 #define CEDRUS_CAPABILITY_UNTILED BIT(0)
32 #define CEDRUS_CAPABILITY_H265_DEC BIT(1)
33 #define CEDRUS_CAPABILITY_H264_DEC BIT(2)
34 #define CEDRUS_CAPABILITY_MPEG2_DEC BIT(3)
35 #define CEDRUS_CAPABILITY_VP8_DEC BIT(4)
36 #define CEDRUS_CAPABILITY_H265_10_DEC BIT(5)
37
38 enum cedrus_irq_status {
39 CEDRUS_IRQ_NONE,
40 CEDRUS_IRQ_ERROR,
41 CEDRUS_IRQ_OK,
42 };
43
44 enum cedrus_h264_pic_type {
45 CEDRUS_H264_PIC_TYPE_FRAME = 0,
46 CEDRUS_H264_PIC_TYPE_FIELD,
47 CEDRUS_H264_PIC_TYPE_MBAFF,
48 };
49
50 struct cedrus_control {
51 struct v4l2_ctrl_config cfg;
52 unsigned int capabilities;
53 };
54
55 struct cedrus_h264_run {
56 const struct v4l2_ctrl_h264_decode_params *decode_params;
57 const struct v4l2_ctrl_h264_pps *pps;
58 const struct v4l2_ctrl_h264_scaling_matrix *scaling_matrix;
59 const struct v4l2_ctrl_h264_slice_params *slice_params;
60 const struct v4l2_ctrl_h264_sps *sps;
61 const struct v4l2_ctrl_h264_pred_weights *pred_weights;
62 };
63
64 struct cedrus_mpeg2_run {
65 const struct v4l2_ctrl_mpeg2_sequence *sequence;
66 const struct v4l2_ctrl_mpeg2_picture *picture;
67 const struct v4l2_ctrl_mpeg2_quantisation *quantisation;
68 };
69
70 struct cedrus_h265_run {
71 const struct v4l2_ctrl_hevc_sps *sps;
72 const struct v4l2_ctrl_hevc_pps *pps;
73 const struct v4l2_ctrl_hevc_slice_params *slice_params;
74 const struct v4l2_ctrl_hevc_decode_params *decode_params;
75 const struct v4l2_ctrl_hevc_scaling_matrix *scaling_matrix;
76 const u32 *entry_points;
77 u32 entry_points_count;
78 };
79
80 struct cedrus_vp8_run {
81 const struct v4l2_ctrl_vp8_frame *frame_params;
82 };
83
84 struct cedrus_run {
85 struct vb2_v4l2_buffer *src;
86 struct vb2_v4l2_buffer *dst;
87
88 union {
89 struct cedrus_h264_run h264;
90 struct cedrus_mpeg2_run mpeg2;
91 struct cedrus_h265_run h265;
92 struct cedrus_vp8_run vp8;
93 };
94 };
95
96 struct cedrus_buffer {
97 struct v4l2_m2m_buffer m2m_buf;
98
99 union {
100 struct {
101 unsigned int position;
102 enum cedrus_h264_pic_type pic_type;
103 void *mv_col_buf;
104 dma_addr_t mv_col_buf_dma;
105 ssize_t mv_col_buf_size;
106 } h264;
107 struct {
108 void *mv_col_buf;
109 dma_addr_t mv_col_buf_dma;
110 ssize_t mv_col_buf_size;
111 } h265;
112 } codec;
113 };
114
115 struct cedrus_ctx {
116 struct v4l2_fh fh;
117 struct cedrus_dev *dev;
118
119 struct v4l2_pix_format src_fmt;
120 struct v4l2_pix_format dst_fmt;
121 struct cedrus_dec_ops *current_codec;
122 unsigned int bit_depth;
123
124 struct v4l2_ctrl_handler hdl;
125 struct v4l2_ctrl **ctrls;
126
127 union {
128 struct {
129 void *pic_info_buf;
130 dma_addr_t pic_info_buf_dma;
131 ssize_t pic_info_buf_size;
132 void *neighbor_info_buf;
133 dma_addr_t neighbor_info_buf_dma;
134 void *deblk_buf;
135 dma_addr_t deblk_buf_dma;
136 ssize_t deblk_buf_size;
137 void *intra_pred_buf;
138 dma_addr_t intra_pred_buf_dma;
139 ssize_t intra_pred_buf_size;
140 } h264;
141 struct {
142 void *neighbor_info_buf;
143 dma_addr_t neighbor_info_buf_addr;
144 void *entry_points_buf;
145 dma_addr_t entry_points_buf_addr;
146 } h265;
147 struct {
148 unsigned int last_frame_p_type;
149 unsigned int last_filter_type;
150 unsigned int last_sharpness_level;
151
152 u8 *entropy_probs_buf;
153 dma_addr_t entropy_probs_buf_dma;
154 } vp8;
155 } codec;
156 };
157
158 struct cedrus_dec_ops {
159 void (*irq_clear)(struct cedrus_ctx *ctx);
160 void (*irq_disable)(struct cedrus_ctx *ctx);
161 enum cedrus_irq_status (*irq_status)(struct cedrus_ctx *ctx);
162 int (*setup)(struct cedrus_ctx *ctx, struct cedrus_run *run);
163 int (*start)(struct cedrus_ctx *ctx);
164 void (*stop)(struct cedrus_ctx *ctx);
165 void (*trigger)(struct cedrus_ctx *ctx);
166 unsigned int (*extra_cap_size)(struct cedrus_ctx *ctx,
167 struct v4l2_pix_format *pix_fmt);
168 };
169
170 struct cedrus_variant {
171 unsigned int capabilities;
172 unsigned int mod_rate;
173 };
174
175 struct cedrus_dev {
176 struct v4l2_device v4l2_dev;
177 struct video_device vfd;
178 struct media_device mdev;
179 struct media_pad pad[2];
180 struct platform_device *pdev;
181 struct device *dev;
182 struct v4l2_m2m_dev *m2m_dev;
183
184 /* Device file mutex */
185 struct mutex dev_mutex;
186
187 void __iomem *base;
188
189 struct clk *mod_clk;
190 struct clk *ahb_clk;
191 struct clk *ram_clk;
192
193 struct reset_control *rstc;
194
195 unsigned int capabilities;
196
197 struct delayed_work watchdog_work;
198 };
199
200 extern struct cedrus_dec_ops cedrus_dec_ops_mpeg2;
201 extern struct cedrus_dec_ops cedrus_dec_ops_h264;
202 extern struct cedrus_dec_ops cedrus_dec_ops_h265;
203 extern struct cedrus_dec_ops cedrus_dec_ops_vp8;
204
cedrus_write(struct cedrus_dev * dev,u32 reg,u32 val)205 static inline void cedrus_write(struct cedrus_dev *dev, u32 reg, u32 val)
206 {
207 writel(val, dev->base + reg);
208 }
209
cedrus_read(struct cedrus_dev * dev,u32 reg)210 static inline u32 cedrus_read(struct cedrus_dev *dev, u32 reg)
211 {
212 return readl(dev->base + reg);
213 }
214
cedrus_wait_for(struct cedrus_dev * dev,u32 reg,u32 flag)215 static inline u32 cedrus_wait_for(struct cedrus_dev *dev, u32 reg, u32 flag)
216 {
217 u32 value;
218
219 return readl_poll_timeout_atomic(dev->base + reg, value,
220 (value & flag) == 0, 10, 1000);
221 }
222
cedrus_buf_addr(struct vb2_buffer * buf,struct v4l2_pix_format * pix_fmt,unsigned int plane)223 static inline dma_addr_t cedrus_buf_addr(struct vb2_buffer *buf,
224 struct v4l2_pix_format *pix_fmt,
225 unsigned int plane)
226 {
227 dma_addr_t addr = vb2_dma_contig_plane_dma_addr(buf, 0);
228
229 return addr + (pix_fmt ? (dma_addr_t)pix_fmt->bytesperline *
230 pix_fmt->height * plane : 0);
231 }
232
cedrus_dst_buf_addr(struct cedrus_ctx * ctx,struct vb2_buffer * buf,unsigned int plane)233 static inline dma_addr_t cedrus_dst_buf_addr(struct cedrus_ctx *ctx,
234 struct vb2_buffer *buf,
235 unsigned int plane)
236 {
237 return buf ? cedrus_buf_addr(buf, &ctx->dst_fmt, plane) : 0;
238 }
239
cedrus_write_ref_buf_addr(struct cedrus_ctx * ctx,struct vb2_queue * q,u64 timestamp,u32 luma_reg,u32 chroma_reg)240 static inline void cedrus_write_ref_buf_addr(struct cedrus_ctx *ctx,
241 struct vb2_queue *q,
242 u64 timestamp,
243 u32 luma_reg,
244 u32 chroma_reg)
245 {
246 struct cedrus_dev *dev = ctx->dev;
247 struct vb2_buffer *buf = vb2_find_buffer(q, timestamp);
248
249 cedrus_write(dev, luma_reg, cedrus_dst_buf_addr(ctx, buf, 0));
250 cedrus_write(dev, chroma_reg, cedrus_dst_buf_addr(ctx, buf, 1));
251 }
252
253 static inline struct cedrus_buffer *
vb2_v4l2_to_cedrus_buffer(const struct vb2_v4l2_buffer * p)254 vb2_v4l2_to_cedrus_buffer(const struct vb2_v4l2_buffer *p)
255 {
256 return container_of(p, struct cedrus_buffer, m2m_buf.vb);
257 }
258
259 static inline struct cedrus_buffer *
vb2_to_cedrus_buffer(const struct vb2_buffer * p)260 vb2_to_cedrus_buffer(const struct vb2_buffer *p)
261 {
262 return vb2_v4l2_to_cedrus_buffer(to_vb2_v4l2_buffer(p));
263 }
264
265 static inline bool
cedrus_is_capable(struct cedrus_ctx * ctx,unsigned int capabilities)266 cedrus_is_capable(struct cedrus_ctx *ctx, unsigned int capabilities)
267 {
268 return (ctx->dev->capabilities & capabilities) == capabilities;
269 }
270
271 void *cedrus_find_control_data(struct cedrus_ctx *ctx, u32 id);
272 u32 cedrus_get_num_of_controls(struct cedrus_ctx *ctx, u32 id);
273
274 #endif
275