1 // SPDX-License-Identifier: GPL-2.0
5 * Qualcomm MSM Camera Subsystem - V4L2 device node
7 * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
8 * Copyright (C) 2015-2018 Linaro Ltd.
10 #include <linux/slab.h>
11 #include <media/media-entity.h>
12 #include <media/v4l2-dev.h>
13 #include <media/v4l2-device.h>
14 #include <media/v4l2-ioctl.h>
15 #include <media/v4l2-mc.h>
16 #include <media/videobuf2-dma-sg.h>
18 #include "camss-video.h"
21 #define CAMSS_FRAME_MIN_WIDTH 1
22 #define CAMSS_FRAME_MAX_WIDTH 8191
23 #define CAMSS_FRAME_MIN_HEIGHT 1
24 #define CAMSS_FRAME_MAX_HEIGHT_RDI 8191
25 #define CAMSS_FRAME_MAX_HEIGHT_PIX 4096
33 * struct camss_format_info - ISP media bus format information
34 * @code: V4L2 media bus format code
35 * @pixelformat: V4L2 pixel format FCC identifier
36 * @planes: Number of planes
37 * @hsub: Horizontal subsampling (for each plane)
38 * @vsub: Vertical subsampling (for each plane)
39 * @bpp: Bits per pixel when stored in memory (for each plane)
41 struct camss_format_info {
50 static const struct camss_format_info formats_rdi_8x16[] = {
51 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
52 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
53 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
54 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
55 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
56 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
57 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
58 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
59 { MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 1,
60 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
61 { MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 1,
62 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
63 { MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 1,
64 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
65 { MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 1,
66 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
67 { MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 1,
68 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
69 { MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 1,
70 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
71 { MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 1,
72 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
73 { MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 1,
74 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
75 { MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 1,
76 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
77 { MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 1,
78 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
79 { MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 1,
80 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
81 { MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 1,
82 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
83 { MEDIA_BUS_FMT_Y10_1X10, V4L2_PIX_FMT_Y10P, 1,
84 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
87 static const struct camss_format_info formats_rdi_8x96[] = {
88 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
89 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
90 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
91 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
92 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
93 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
94 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
95 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
96 { MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 1,
97 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
98 { MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 1,
99 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
100 { MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 1,
101 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
102 { MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 1,
103 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
104 { MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 1,
105 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
106 { MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 1,
107 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
108 { MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 1,
109 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
110 { MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 1,
111 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
112 { MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_PIX_FMT_SBGGR10, 1,
113 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
114 { MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 1,
115 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
116 { MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 1,
117 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
118 { MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 1,
119 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
120 { MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 1,
121 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
122 { MEDIA_BUS_FMT_SBGGR14_1X14, V4L2_PIX_FMT_SBGGR14P, 1,
123 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
124 { MEDIA_BUS_FMT_SGBRG14_1X14, V4L2_PIX_FMT_SGBRG14P, 1,
125 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
126 { MEDIA_BUS_FMT_SGRBG14_1X14, V4L2_PIX_FMT_SGRBG14P, 1,
127 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
128 { MEDIA_BUS_FMT_SRGGB14_1X14, V4L2_PIX_FMT_SRGGB14P, 1,
129 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
130 { MEDIA_BUS_FMT_Y10_1X10, V4L2_PIX_FMT_Y10P, 1,
131 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
132 { MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, V4L2_PIX_FMT_Y10, 1,
133 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
136 static const struct camss_format_info formats_rdi_845[] = {
137 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
138 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
139 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
140 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
141 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
142 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
143 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
144 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
145 { MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 1,
146 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
147 { MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 1,
148 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
149 { MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 1,
150 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
151 { MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 1,
152 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
153 { MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 1,
154 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
155 { MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 1,
156 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
157 { MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 1,
158 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
159 { MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 1,
160 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
161 { MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_PIX_FMT_SBGGR10, 1,
162 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
163 { MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 1,
164 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
165 { MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 1,
166 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
167 { MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 1,
168 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
169 { MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 1,
170 { { 1, 1 } }, { { 1, 1 } }, { 12 } },
171 { MEDIA_BUS_FMT_SBGGR14_1X14, V4L2_PIX_FMT_SBGGR14P, 1,
172 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
173 { MEDIA_BUS_FMT_SGBRG14_1X14, V4L2_PIX_FMT_SGBRG14P, 1,
174 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
175 { MEDIA_BUS_FMT_SGRBG14_1X14, V4L2_PIX_FMT_SGRBG14P, 1,
176 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
177 { MEDIA_BUS_FMT_SRGGB14_1X14, V4L2_PIX_FMT_SRGGB14P, 1,
178 { { 1, 1 } }, { { 1, 1 } }, { 14 } },
179 { MEDIA_BUS_FMT_Y8_1X8, V4L2_PIX_FMT_GREY, 1,
180 { { 1, 1 } }, { { 1, 1 } }, { 8 } },
181 { MEDIA_BUS_FMT_Y10_1X10, V4L2_PIX_FMT_Y10P, 1,
182 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
183 { MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, V4L2_PIX_FMT_Y10, 1,
184 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
187 static const struct camss_format_info formats_pix_8x16[] = {
188 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1,
189 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
190 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1,
191 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
192 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
193 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
194 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
195 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
196 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1,
197 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
198 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1,
199 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
200 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
201 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
202 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
203 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
204 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1,
205 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
206 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1,
207 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
208 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1,
209 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
210 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1,
211 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
212 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1,
213 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
214 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1,
215 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
216 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1,
217 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
218 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1,
219 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
222 static const struct camss_format_info formats_pix_8x96[] = {
223 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1,
224 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
225 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1,
226 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
227 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
228 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
229 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
230 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
231 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1,
232 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
233 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1,
234 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
235 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
236 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
237 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
238 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
239 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1,
240 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
241 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1,
242 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
243 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1,
244 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
245 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1,
246 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
247 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1,
248 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
249 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1,
250 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
251 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1,
252 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
253 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1,
254 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
255 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
256 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
257 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
258 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
259 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
260 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
261 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
262 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
265 /* -----------------------------------------------------------------------------
269 static int video_find_format(u32 code, u32 pixelformat,
270 const struct camss_format_info *formats,
271 unsigned int nformats)
275 for (i = 0; i < nformats; i++) {
276 if (formats[i].code == code &&
277 formats[i].pixelformat == pixelformat)
281 for (i = 0; i < nformats; i++)
282 if (formats[i].code == code)
291 * video_mbus_to_pix_mp - Convert v4l2_mbus_framefmt to v4l2_pix_format_mplane
292 * @mbus: v4l2_mbus_framefmt format (input)
293 * @pix: v4l2_pix_format_mplane format (output)
294 * @f: a pointer to formats array element to be used for the conversion
295 * @alignment: bytesperline alignment value
297 * Fill the output pix structure with information from the input mbus format.
299 * Return 0 on success or a negative error code otherwise
301 static int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus,
302 struct v4l2_pix_format_mplane *pix,
303 const struct camss_format_info *f,
304 unsigned int alignment)
309 memset(pix, 0, sizeof(*pix));
310 v4l2_fill_pix_format_mplane(pix, mbus);
311 pix->pixelformat = f->pixelformat;
312 pix->num_planes = f->planes;
313 for (i = 0; i < pix->num_planes; i++) {
314 bytesperline = pix->width / f->hsub[i].numerator *
315 f->hsub[i].denominator * f->bpp[i] / 8;
316 bytesperline = ALIGN(bytesperline, alignment);
317 pix->plane_fmt[i].bytesperline = bytesperline;
318 pix->plane_fmt[i].sizeimage = pix->height /
319 f->vsub[i].numerator * f->vsub[i].denominator *
326 static struct v4l2_subdev *video_remote_subdev(struct camss_video *video,
329 struct media_pad *remote;
331 remote = media_pad_remote_pad_first(&video->pad);
333 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
337 *pad = remote->index;
339 return media_entity_to_v4l2_subdev(remote->entity);
342 static int video_get_subdev_format(struct camss_video *video,
343 struct v4l2_format *format)
345 struct v4l2_subdev_format fmt = {
346 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
348 struct v4l2_subdev *subdev;
352 subdev = video_remote_subdev(video, &pad);
358 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
362 ret = video_find_format(fmt.format.code,
363 format->fmt.pix_mp.pixelformat,
364 video->formats, video->nformats);
368 format->type = video->type;
370 return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp,
371 &video->formats[ret], video->bpl_alignment);
374 /* -----------------------------------------------------------------------------
375 * Video queue operations
378 static int video_queue_setup(struct vb2_queue *q,
379 unsigned int *num_buffers, unsigned int *num_planes,
380 unsigned int sizes[], struct device *alloc_devs[])
382 struct camss_video *video = vb2_get_drv_priv(q);
383 const struct v4l2_pix_format_mplane *format =
384 &video->active_fmt.fmt.pix_mp;
388 if (*num_planes != format->num_planes)
391 for (i = 0; i < *num_planes; i++)
392 if (sizes[i] < format->plane_fmt[i].sizeimage)
398 *num_planes = format->num_planes;
400 for (i = 0; i < *num_planes; i++)
401 sizes[i] = format->plane_fmt[i].sizeimage;
406 static int video_buf_init(struct vb2_buffer *vb)
408 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
409 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
410 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
412 const struct v4l2_pix_format_mplane *format =
413 &video->active_fmt.fmt.pix_mp;
414 struct sg_table *sgt;
417 for (i = 0; i < format->num_planes; i++) {
418 sgt = vb2_dma_sg_plane_desc(vb, i);
422 buffer->addr[i] = sg_dma_address(sgt->sgl);
425 if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
426 format->pixelformat == V4L2_PIX_FMT_NV21 ||
427 format->pixelformat == V4L2_PIX_FMT_NV16 ||
428 format->pixelformat == V4L2_PIX_FMT_NV61)
429 buffer->addr[1] = buffer->addr[0] +
430 format->plane_fmt[0].bytesperline *
436 static int video_buf_prepare(struct vb2_buffer *vb)
438 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
439 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
440 const struct v4l2_pix_format_mplane *format =
441 &video->active_fmt.fmt.pix_mp;
444 for (i = 0; i < format->num_planes; i++) {
445 if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i))
448 vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage);
451 vbuf->field = V4L2_FIELD_NONE;
456 static void video_buf_queue(struct vb2_buffer *vb)
458 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
459 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
460 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
463 video->ops->queue_buffer(video, buffer);
466 static int video_check_format(struct camss_video *video)
468 struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
469 struct v4l2_format format;
470 struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
473 sd_pix->pixelformat = pix->pixelformat;
474 ret = video_get_subdev_format(video, &format);
478 if (pix->pixelformat != sd_pix->pixelformat ||
479 pix->height != sd_pix->height ||
480 pix->width != sd_pix->width ||
481 pix->num_planes != sd_pix->num_planes ||
482 pix->field != format.fmt.pix_mp.field)
488 static int video_start_streaming(struct vb2_queue *q, unsigned int count)
490 struct camss_video *video = vb2_get_drv_priv(q);
491 struct video_device *vdev = &video->vdev;
492 struct media_entity *entity;
493 struct media_pad *pad;
494 struct v4l2_subdev *subdev;
497 ret = video_device_pipeline_alloc_start(vdev);
499 dev_err(video->camss->dev, "Failed to start media pipeline: %d\n", ret);
503 ret = video_check_format(video);
507 entity = &vdev->entity;
509 pad = &entity->pads[0];
510 if (!(pad->flags & MEDIA_PAD_FL_SINK))
513 pad = media_pad_remote_pad_first(pad);
514 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
517 entity = pad->entity;
518 subdev = media_entity_to_v4l2_subdev(entity);
520 ret = v4l2_subdev_call(subdev, video, s_stream, 1);
521 if (ret < 0 && ret != -ENOIOCTLCMD)
528 video_device_pipeline_stop(vdev);
531 video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
536 static void video_stop_streaming(struct vb2_queue *q)
538 struct camss_video *video = vb2_get_drv_priv(q);
539 struct video_device *vdev = &video->vdev;
540 struct media_entity *entity;
541 struct media_pad *pad;
542 struct v4l2_subdev *subdev;
545 entity = &vdev->entity;
547 pad = &entity->pads[0];
548 if (!(pad->flags & MEDIA_PAD_FL_SINK))
551 pad = media_pad_remote_pad_first(pad);
552 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
555 entity = pad->entity;
556 subdev = media_entity_to_v4l2_subdev(entity);
558 ret = v4l2_subdev_call(subdev, video, s_stream, 0);
560 if (entity->use_count > 1) {
561 /* Don't stop if other instances of the pipeline are still running */
562 dev_dbg(video->camss->dev, "Video pipeline still used, don't stop streaming.\n");
567 dev_err(video->camss->dev, "Video pipeline stop failed: %d\n", ret);
572 video_device_pipeline_stop(vdev);
574 video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
577 static const struct vb2_ops msm_video_vb2_q_ops = {
578 .queue_setup = video_queue_setup,
579 .wait_prepare = vb2_ops_wait_prepare,
580 .wait_finish = vb2_ops_wait_finish,
581 .buf_init = video_buf_init,
582 .buf_prepare = video_buf_prepare,
583 .buf_queue = video_buf_queue,
584 .start_streaming = video_start_streaming,
585 .stop_streaming = video_stop_streaming,
588 /* -----------------------------------------------------------------------------
592 static int video_querycap(struct file *file, void *fh,
593 struct v4l2_capability *cap)
595 strscpy(cap->driver, "qcom-camss", sizeof(cap->driver));
596 strscpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
601 static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
603 struct camss_video *video = video_drvdata(file);
605 u32 mcode = f->mbus_code;
607 if (f->type != video->type)
610 if (f->index >= video->nformats)
614 * Find index "i" of "k"th unique pixelformat in formats array.
616 * If f->mbus_code passed to video_enum_fmt() is not zero, a device
617 * with V4L2_CAP_IO_MC capability restricts enumeration to only the
618 * pixel formats that can be produced from that media bus code.
619 * This is implemented by skipping video->formats[] entries with
620 * code != f->mbus_code (if f->mbus_code is not zero).
621 * If the f->mbus_code passed to video_enum_fmt() is not supported,
622 * -EINVAL is returned.
623 * If f->mbus_code is zero, all the pixel formats are enumerated.
626 for (i = 0; i < video->nformats; i++) {
627 if (mcode != 0 && video->formats[i].code != mcode)
630 for (j = 0; j < i; j++) {
631 if (mcode != 0 && video->formats[j].code != mcode)
633 if (video->formats[i].pixelformat ==
634 video->formats[j].pixelformat)
645 if (k == -1 || k < f->index)
647 * All the unique pixel formats matching the arguments
648 * have been enumerated (k >= 0 and f->index > 0), or
649 * no pixel formats match the non-zero f->mbus_code (k == -1).
653 f->pixelformat = video->formats[i].pixelformat;
658 static int video_enum_framesizes(struct file *file, void *fh,
659 struct v4l2_frmsizeenum *fsize)
661 struct camss_video *video = video_drvdata(file);
667 /* Only accept pixel format present in the formats[] table */
668 for (i = 0; i < video->nformats; i++) {
669 if (video->formats[i].pixelformat == fsize->pixel_format)
673 if (i == video->nformats)
676 fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
677 fsize->stepwise.min_width = CAMSS_FRAME_MIN_WIDTH;
678 fsize->stepwise.max_width = CAMSS_FRAME_MAX_WIDTH;
679 fsize->stepwise.min_height = CAMSS_FRAME_MIN_HEIGHT;
680 fsize->stepwise.max_height = (video->line_based) ?
681 CAMSS_FRAME_MAX_HEIGHT_PIX : CAMSS_FRAME_MAX_HEIGHT_RDI;
682 fsize->stepwise.step_width = 1;
683 fsize->stepwise.step_height = 1;
688 static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
690 struct camss_video *video = video_drvdata(file);
692 *f = video->active_fmt;
697 static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
699 struct v4l2_pix_format_mplane *pix_mp;
700 const struct camss_format_info *fi;
701 struct v4l2_plane_pix_format *p;
702 u32 bytesperline[3] = { 0 };
703 u32 sizeimage[3] = { 0 };
708 pix_mp = &f->fmt.pix_mp;
710 if (video->line_based)
711 for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
712 p = &pix_mp->plane_fmt[i];
713 bytesperline[i] = clamp_t(u32, p->bytesperline,
715 sizeimage[i] = clamp_t(u32, p->sizeimage,
717 bytesperline[i] * CAMSS_FRAME_MAX_HEIGHT_PIX);
720 for (j = 0; j < video->nformats; j++)
721 if (pix_mp->pixelformat == video->formats[j].pixelformat)
724 if (j == video->nformats)
725 j = 0; /* default format */
727 fi = &video->formats[j];
728 width = pix_mp->width;
729 height = pix_mp->height;
731 memset(pix_mp, 0, sizeof(*pix_mp));
733 pix_mp->pixelformat = fi->pixelformat;
734 pix_mp->width = clamp_t(u32, width, 1, CAMSS_FRAME_MAX_WIDTH);
735 pix_mp->height = clamp_t(u32, height, 1, CAMSS_FRAME_MAX_HEIGHT_RDI);
736 pix_mp->num_planes = fi->planes;
737 for (i = 0; i < pix_mp->num_planes; i++) {
738 bpl = pix_mp->width / fi->hsub[i].numerator *
739 fi->hsub[i].denominator * fi->bpp[i] / 8;
740 bpl = ALIGN(bpl, video->bpl_alignment);
741 pix_mp->plane_fmt[i].bytesperline = bpl;
742 pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
743 fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
746 pix_mp->field = V4L2_FIELD_NONE;
747 pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
749 pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
750 pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
751 pix_mp->colorspace, pix_mp->ycbcr_enc);
752 pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
754 if (video->line_based)
755 for (i = 0; i < pix_mp->num_planes; i++) {
756 p = &pix_mp->plane_fmt[i];
757 p->bytesperline = clamp_t(u32, p->bytesperline,
759 p->sizeimage = clamp_t(u32, p->sizeimage,
761 p->bytesperline * CAMSS_FRAME_MAX_HEIGHT_PIX);
762 lines = p->sizeimage / p->bytesperline;
764 if (p->bytesperline < bytesperline[i])
765 p->bytesperline = ALIGN(bytesperline[i], 8);
767 if (p->sizeimage < p->bytesperline * lines)
768 p->sizeimage = p->bytesperline * lines;
770 if (p->sizeimage < sizeimage[i])
771 p->sizeimage = sizeimage[i];
777 static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
779 struct camss_video *video = video_drvdata(file);
781 return __video_try_fmt(video, f);
784 static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
786 struct camss_video *video = video_drvdata(file);
789 if (vb2_is_busy(&video->vb2_q))
792 ret = __video_try_fmt(video, f);
796 video->active_fmt = *f;
801 static int video_enum_input(struct file *file, void *fh,
802 struct v4l2_input *input)
804 if (input->index > 0)
807 strscpy(input->name, "camera", sizeof(input->name));
808 input->type = V4L2_INPUT_TYPE_CAMERA;
813 static int video_g_input(struct file *file, void *fh, unsigned int *input)
820 static int video_s_input(struct file *file, void *fh, unsigned int input)
822 return input == 0 ? 0 : -EINVAL;
825 static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
826 .vidioc_querycap = video_querycap,
827 .vidioc_enum_fmt_vid_cap = video_enum_fmt,
828 .vidioc_enum_framesizes = video_enum_framesizes,
829 .vidioc_g_fmt_vid_cap_mplane = video_g_fmt,
830 .vidioc_s_fmt_vid_cap_mplane = video_s_fmt,
831 .vidioc_try_fmt_vid_cap_mplane = video_try_fmt,
832 .vidioc_reqbufs = vb2_ioctl_reqbufs,
833 .vidioc_querybuf = vb2_ioctl_querybuf,
834 .vidioc_qbuf = vb2_ioctl_qbuf,
835 .vidioc_expbuf = vb2_ioctl_expbuf,
836 .vidioc_dqbuf = vb2_ioctl_dqbuf,
837 .vidioc_create_bufs = vb2_ioctl_create_bufs,
838 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
839 .vidioc_streamon = vb2_ioctl_streamon,
840 .vidioc_streamoff = vb2_ioctl_streamoff,
841 .vidioc_enum_input = video_enum_input,
842 .vidioc_g_input = video_g_input,
843 .vidioc_s_input = video_s_input,
846 /* -----------------------------------------------------------------------------
847 * V4L2 file operations
850 static int video_open(struct file *file)
852 struct video_device *vdev = video_devdata(file);
853 struct camss_video *video = video_drvdata(file);
857 mutex_lock(&video->lock);
859 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
865 v4l2_fh_init(vfh, vdev);
868 file->private_data = vfh;
870 ret = v4l2_pipeline_pm_get(&vdev->entity);
872 dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
877 mutex_unlock(&video->lock);
882 v4l2_fh_release(file);
885 mutex_unlock(&video->lock);
890 static int video_release(struct file *file)
892 struct video_device *vdev = video_devdata(file);
894 vb2_fop_release(file);
896 v4l2_pipeline_pm_put(&vdev->entity);
898 file->private_data = NULL;
903 static const struct v4l2_file_operations msm_vid_fops = {
904 .owner = THIS_MODULE,
905 .unlocked_ioctl = video_ioctl2,
907 .release = video_release,
908 .poll = vb2_fop_poll,
909 .mmap = vb2_fop_mmap,
910 .read = vb2_fop_read,
913 /* -----------------------------------------------------------------------------
917 static void msm_video_release(struct video_device *vdev)
919 struct camss_video *video = video_get_drvdata(vdev);
921 media_entity_cleanup(&vdev->entity);
923 mutex_destroy(&video->q_lock);
924 mutex_destroy(&video->lock);
926 if (atomic_dec_and_test(&video->camss->ref_count))
927 camss_delete(video->camss);
931 * msm_video_init_format - Helper function to initialize format
932 * @video: struct camss_video
934 * Initialize pad format with default value.
936 * Return 0 on success or a negative error code otherwise
938 static int msm_video_init_format(struct camss_video *video)
941 struct v4l2_format format = {
942 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
946 .pixelformat = video->formats[0].pixelformat,
950 ret = __video_try_fmt(video, &format);
954 video->active_fmt = format;
960 * msm_video_register - Register a video device node
961 * @video: struct camss_video
962 * @v4l2_dev: V4L2 device
963 * @name: name to be used for the video device node
965 * Initialize and register a video device node to a V4L2 device. Also
966 * initialize the vb2 queue.
968 * Return 0 on success or a negative error code otherwise
971 int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
972 const char *name, int is_pix)
974 struct media_pad *pad = &video->pad;
975 struct video_device *vdev;
981 mutex_init(&video->q_lock);
985 q->mem_ops = &vb2_dma_sg_memops;
986 q->ops = &msm_video_vb2_q_ops;
987 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
988 q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
989 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
990 q->buf_struct_size = sizeof(struct camss_buffer);
991 q->dev = video->camss->dev;
992 q->lock = &video->q_lock;
993 ret = vb2_queue_init(q);
995 dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
999 pad->flags = MEDIA_PAD_FL_SINK;
1000 ret = media_entity_pads_init(&vdev->entity, 1, pad);
1002 dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
1004 goto error_vb2_init;
1007 mutex_init(&video->lock);
1009 if (video->camss->version == CAMSS_8x16) {
1011 video->formats = formats_pix_8x16;
1012 video->nformats = ARRAY_SIZE(formats_pix_8x16);
1014 video->formats = formats_rdi_8x16;
1015 video->nformats = ARRAY_SIZE(formats_rdi_8x16);
1017 } else if (video->camss->version == CAMSS_8x96 ||
1018 video->camss->version == CAMSS_660) {
1020 video->formats = formats_pix_8x96;
1021 video->nformats = ARRAY_SIZE(formats_pix_8x96);
1023 video->formats = formats_rdi_8x96;
1024 video->nformats = ARRAY_SIZE(formats_rdi_8x96);
1026 } else if (video->camss->version == CAMSS_845 ||
1027 video->camss->version == CAMSS_8250) {
1028 video->formats = formats_rdi_845;
1029 video->nformats = ARRAY_SIZE(formats_rdi_845);
1032 goto error_video_register;
1035 ret = msm_video_init_format(video);
1037 dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
1038 goto error_video_register;
1041 vdev->fops = &msm_vid_fops;
1042 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING
1043 | V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
1044 vdev->ioctl_ops = &msm_vid_ioctl_ops;
1045 vdev->release = msm_video_release;
1046 vdev->v4l2_dev = v4l2_dev;
1047 vdev->vfl_dir = VFL_DIR_RX;
1048 vdev->queue = &video->vb2_q;
1049 vdev->lock = &video->lock;
1050 strscpy(vdev->name, name, sizeof(vdev->name));
1052 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1054 dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
1056 goto error_video_register;
1059 video_set_drvdata(vdev, video);
1060 atomic_inc(&video->camss->ref_count);
1064 error_video_register:
1065 media_entity_cleanup(&vdev->entity);
1066 mutex_destroy(&video->lock);
1068 mutex_destroy(&video->q_lock);
1073 void msm_video_unregister(struct camss_video *video)
1075 atomic_inc(&video->camss->ref_count);
1076 vb2_video_unregister_device(&video->vdev);
1077 atomic_dec(&video->camss->ref_count);