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);
356 memset(&fmt, 0, sizeof(fmt));
359 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
363 ret = video_find_format(fmt.format.code,
364 format->fmt.pix_mp.pixelformat,
365 video->formats, video->nformats);
369 format->type = video->type;
371 return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp,
372 &video->formats[ret], video->bpl_alignment);
375 /* -----------------------------------------------------------------------------
376 * Video queue operations
379 static int video_queue_setup(struct vb2_queue *q,
380 unsigned int *num_buffers, unsigned int *num_planes,
381 unsigned int sizes[], struct device *alloc_devs[])
383 struct camss_video *video = vb2_get_drv_priv(q);
384 const struct v4l2_pix_format_mplane *format =
385 &video->active_fmt.fmt.pix_mp;
389 if (*num_planes != format->num_planes)
392 for (i = 0; i < *num_planes; i++)
393 if (sizes[i] < format->plane_fmt[i].sizeimage)
399 *num_planes = format->num_planes;
401 for (i = 0; i < *num_planes; i++)
402 sizes[i] = format->plane_fmt[i].sizeimage;
407 static int video_buf_init(struct vb2_buffer *vb)
409 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
410 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
411 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
413 const struct v4l2_pix_format_mplane *format =
414 &video->active_fmt.fmt.pix_mp;
415 struct sg_table *sgt;
418 for (i = 0; i < format->num_planes; i++) {
419 sgt = vb2_dma_sg_plane_desc(vb, i);
423 buffer->addr[i] = sg_dma_address(sgt->sgl);
426 if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
427 format->pixelformat == V4L2_PIX_FMT_NV21 ||
428 format->pixelformat == V4L2_PIX_FMT_NV16 ||
429 format->pixelformat == V4L2_PIX_FMT_NV61)
430 buffer->addr[1] = buffer->addr[0] +
431 format->plane_fmt[0].bytesperline *
437 static int video_buf_prepare(struct vb2_buffer *vb)
439 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
440 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
441 const struct v4l2_pix_format_mplane *format =
442 &video->active_fmt.fmt.pix_mp;
445 for (i = 0; i < format->num_planes; i++) {
446 if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i))
449 vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage);
452 vbuf->field = V4L2_FIELD_NONE;
457 static void video_buf_queue(struct vb2_buffer *vb)
459 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
460 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
461 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
464 video->ops->queue_buffer(video, buffer);
467 static int video_check_format(struct camss_video *video)
469 struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
470 struct v4l2_format format;
471 struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
474 sd_pix->pixelformat = pix->pixelformat;
475 ret = video_get_subdev_format(video, &format);
479 if (pix->pixelformat != sd_pix->pixelformat ||
480 pix->height != sd_pix->height ||
481 pix->width != sd_pix->width ||
482 pix->num_planes != sd_pix->num_planes ||
483 pix->field != format.fmt.pix_mp.field)
489 static int video_start_streaming(struct vb2_queue *q, unsigned int count)
491 struct camss_video *video = vb2_get_drv_priv(q);
492 struct video_device *vdev = &video->vdev;
493 struct media_entity *entity;
494 struct media_pad *pad;
495 struct v4l2_subdev *subdev;
498 ret = video_device_pipeline_alloc_start(vdev);
500 dev_err(video->camss->dev, "Failed to start media pipeline: %d\n", ret);
504 ret = video_check_format(video);
508 entity = &vdev->entity;
510 pad = &entity->pads[0];
511 if (!(pad->flags & MEDIA_PAD_FL_SINK))
514 pad = media_pad_remote_pad_first(pad);
515 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
518 entity = pad->entity;
519 subdev = media_entity_to_v4l2_subdev(entity);
521 ret = v4l2_subdev_call(subdev, video, s_stream, 1);
522 if (ret < 0 && ret != -ENOIOCTLCMD)
529 video_device_pipeline_stop(vdev);
532 video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
537 static void video_stop_streaming(struct vb2_queue *q)
539 struct camss_video *video = vb2_get_drv_priv(q);
540 struct video_device *vdev = &video->vdev;
541 struct media_entity *entity;
542 struct media_pad *pad;
543 struct v4l2_subdev *subdev;
546 entity = &vdev->entity;
548 pad = &entity->pads[0];
549 if (!(pad->flags & MEDIA_PAD_FL_SINK))
552 pad = media_pad_remote_pad_first(pad);
553 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
556 entity = pad->entity;
557 subdev = media_entity_to_v4l2_subdev(entity);
559 ret = v4l2_subdev_call(subdev, video, s_stream, 0);
561 if (entity->use_count > 1) {
562 /* Don't stop if other instances of the pipeline are still running */
563 dev_dbg(video->camss->dev, "Video pipeline still used, don't stop streaming.\n");
568 dev_err(video->camss->dev, "Video pipeline stop failed: %d\n", ret);
573 video_device_pipeline_stop(vdev);
575 video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
578 static const struct vb2_ops msm_video_vb2_q_ops = {
579 .queue_setup = video_queue_setup,
580 .wait_prepare = vb2_ops_wait_prepare,
581 .wait_finish = vb2_ops_wait_finish,
582 .buf_init = video_buf_init,
583 .buf_prepare = video_buf_prepare,
584 .buf_queue = video_buf_queue,
585 .start_streaming = video_start_streaming,
586 .stop_streaming = video_stop_streaming,
589 /* -----------------------------------------------------------------------------
593 static int video_querycap(struct file *file, void *fh,
594 struct v4l2_capability *cap)
596 strscpy(cap->driver, "qcom-camss", sizeof(cap->driver));
597 strscpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
602 static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
604 struct camss_video *video = video_drvdata(file);
606 u32 mcode = f->mbus_code;
608 if (f->type != video->type)
611 if (f->index >= video->nformats)
615 * Find index "i" of "k"th unique pixelformat in formats array.
617 * If f->mbus_code passed to video_enum_fmt() is not zero, a device
618 * with V4L2_CAP_IO_MC capability restricts enumeration to only the
619 * pixel formats that can be produced from that media bus code.
620 * This is implemented by skipping video->formats[] entries with
621 * code != f->mbus_code (if f->mbus_code is not zero).
622 * If the f->mbus_code passed to video_enum_fmt() is not supported,
623 * -EINVAL is returned.
624 * If f->mbus_code is zero, all the pixel formats are enumerated.
627 for (i = 0; i < video->nformats; i++) {
628 if (mcode != 0 && video->formats[i].code != mcode)
631 for (j = 0; j < i; j++) {
632 if (mcode != 0 && video->formats[j].code != mcode)
634 if (video->formats[i].pixelformat ==
635 video->formats[j].pixelformat)
646 if (k == -1 || k < f->index)
648 * All the unique pixel formats matching the arguments
649 * have been enumerated (k >= 0 and f->index > 0), or
650 * no pixel formats match the non-zero f->mbus_code (k == -1).
654 f->pixelformat = video->formats[i].pixelformat;
659 static int video_enum_framesizes(struct file *file, void *fh,
660 struct v4l2_frmsizeenum *fsize)
662 struct camss_video *video = video_drvdata(file);
668 /* Only accept pixel format present in the formats[] table */
669 for (i = 0; i < video->nformats; i++) {
670 if (video->formats[i].pixelformat == fsize->pixel_format)
674 if (i == video->nformats)
677 fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
678 fsize->stepwise.min_width = CAMSS_FRAME_MIN_WIDTH;
679 fsize->stepwise.max_width = CAMSS_FRAME_MAX_WIDTH;
680 fsize->stepwise.min_height = CAMSS_FRAME_MIN_HEIGHT;
681 fsize->stepwise.max_height = (video->line_based) ?
682 CAMSS_FRAME_MAX_HEIGHT_PIX : CAMSS_FRAME_MAX_HEIGHT_RDI;
683 fsize->stepwise.step_width = 1;
684 fsize->stepwise.step_height = 1;
689 static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
691 struct camss_video *video = video_drvdata(file);
693 *f = video->active_fmt;
698 static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
700 struct v4l2_pix_format_mplane *pix_mp;
701 const struct camss_format_info *fi;
702 struct v4l2_plane_pix_format *p;
703 u32 bytesperline[3] = { 0 };
704 u32 sizeimage[3] = { 0 };
709 pix_mp = &f->fmt.pix_mp;
711 if (video->line_based)
712 for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
713 p = &pix_mp->plane_fmt[i];
714 bytesperline[i] = clamp_t(u32, p->bytesperline,
716 sizeimage[i] = clamp_t(u32, p->sizeimage,
718 bytesperline[i] * CAMSS_FRAME_MAX_HEIGHT_PIX);
721 for (j = 0; j < video->nformats; j++)
722 if (pix_mp->pixelformat == video->formats[j].pixelformat)
725 if (j == video->nformats)
726 j = 0; /* default format */
728 fi = &video->formats[j];
729 width = pix_mp->width;
730 height = pix_mp->height;
732 memset(pix_mp, 0, sizeof(*pix_mp));
734 pix_mp->pixelformat = fi->pixelformat;
735 pix_mp->width = clamp_t(u32, width, 1, CAMSS_FRAME_MAX_WIDTH);
736 pix_mp->height = clamp_t(u32, height, 1, CAMSS_FRAME_MAX_HEIGHT_RDI);
737 pix_mp->num_planes = fi->planes;
738 for (i = 0; i < pix_mp->num_planes; i++) {
739 bpl = pix_mp->width / fi->hsub[i].numerator *
740 fi->hsub[i].denominator * fi->bpp[i] / 8;
741 bpl = ALIGN(bpl, video->bpl_alignment);
742 pix_mp->plane_fmt[i].bytesperline = bpl;
743 pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
744 fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
747 pix_mp->field = V4L2_FIELD_NONE;
748 pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
750 pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
751 pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
752 pix_mp->colorspace, pix_mp->ycbcr_enc);
753 pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
755 if (video->line_based)
756 for (i = 0; i < pix_mp->num_planes; i++) {
757 p = &pix_mp->plane_fmt[i];
758 p->bytesperline = clamp_t(u32, p->bytesperline,
760 p->sizeimage = clamp_t(u32, p->sizeimage,
762 p->bytesperline * CAMSS_FRAME_MAX_HEIGHT_PIX);
763 lines = p->sizeimage / p->bytesperline;
765 if (p->bytesperline < bytesperline[i])
766 p->bytesperline = ALIGN(bytesperline[i], 8);
768 if (p->sizeimage < p->bytesperline * lines)
769 p->sizeimage = p->bytesperline * lines;
771 if (p->sizeimage < sizeimage[i])
772 p->sizeimage = sizeimage[i];
778 static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
780 struct camss_video *video = video_drvdata(file);
782 return __video_try_fmt(video, f);
785 static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
787 struct camss_video *video = video_drvdata(file);
790 if (vb2_is_busy(&video->vb2_q))
793 ret = __video_try_fmt(video, f);
797 video->active_fmt = *f;
802 static int video_enum_input(struct file *file, void *fh,
803 struct v4l2_input *input)
805 if (input->index > 0)
808 strscpy(input->name, "camera", sizeof(input->name));
809 input->type = V4L2_INPUT_TYPE_CAMERA;
814 static int video_g_input(struct file *file, void *fh, unsigned int *input)
821 static int video_s_input(struct file *file, void *fh, unsigned int input)
823 return input == 0 ? 0 : -EINVAL;
826 static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
827 .vidioc_querycap = video_querycap,
828 .vidioc_enum_fmt_vid_cap = video_enum_fmt,
829 .vidioc_enum_framesizes = video_enum_framesizes,
830 .vidioc_g_fmt_vid_cap_mplane = video_g_fmt,
831 .vidioc_s_fmt_vid_cap_mplane = video_s_fmt,
832 .vidioc_try_fmt_vid_cap_mplane = video_try_fmt,
833 .vidioc_reqbufs = vb2_ioctl_reqbufs,
834 .vidioc_querybuf = vb2_ioctl_querybuf,
835 .vidioc_qbuf = vb2_ioctl_qbuf,
836 .vidioc_expbuf = vb2_ioctl_expbuf,
837 .vidioc_dqbuf = vb2_ioctl_dqbuf,
838 .vidioc_create_bufs = vb2_ioctl_create_bufs,
839 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
840 .vidioc_streamon = vb2_ioctl_streamon,
841 .vidioc_streamoff = vb2_ioctl_streamoff,
842 .vidioc_enum_input = video_enum_input,
843 .vidioc_g_input = video_g_input,
844 .vidioc_s_input = video_s_input,
847 /* -----------------------------------------------------------------------------
848 * V4L2 file operations
851 static int video_open(struct file *file)
853 struct video_device *vdev = video_devdata(file);
854 struct camss_video *video = video_drvdata(file);
858 mutex_lock(&video->lock);
860 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
866 v4l2_fh_init(vfh, vdev);
869 file->private_data = vfh;
871 ret = v4l2_pipeline_pm_get(&vdev->entity);
873 dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
878 mutex_unlock(&video->lock);
883 v4l2_fh_release(file);
886 mutex_unlock(&video->lock);
891 static int video_release(struct file *file)
893 struct video_device *vdev = video_devdata(file);
895 vb2_fop_release(file);
897 v4l2_pipeline_pm_put(&vdev->entity);
899 file->private_data = NULL;
904 static const struct v4l2_file_operations msm_vid_fops = {
905 .owner = THIS_MODULE,
906 .unlocked_ioctl = video_ioctl2,
908 .release = video_release,
909 .poll = vb2_fop_poll,
910 .mmap = vb2_fop_mmap,
911 .read = vb2_fop_read,
914 /* -----------------------------------------------------------------------------
918 static void msm_video_release(struct video_device *vdev)
920 struct camss_video *video = video_get_drvdata(vdev);
922 media_entity_cleanup(&vdev->entity);
924 mutex_destroy(&video->q_lock);
925 mutex_destroy(&video->lock);
927 if (atomic_dec_and_test(&video->camss->ref_count))
928 camss_delete(video->camss);
932 * msm_video_init_format - Helper function to initialize format
933 * @video: struct camss_video
935 * Initialize pad format with default value.
937 * Return 0 on success or a negative error code otherwise
939 static int msm_video_init_format(struct camss_video *video)
942 struct v4l2_format format = {
943 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
947 .pixelformat = video->formats[0].pixelformat,
951 ret = __video_try_fmt(video, &format);
955 video->active_fmt = format;
961 * msm_video_register - Register a video device node
962 * @video: struct camss_video
963 * @v4l2_dev: V4L2 device
964 * @name: name to be used for the video device node
966 * Initialize and register a video device node to a V4L2 device. Also
967 * initialize the vb2 queue.
969 * Return 0 on success or a negative error code otherwise
972 int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
973 const char *name, int is_pix)
975 struct media_pad *pad = &video->pad;
976 struct video_device *vdev;
982 mutex_init(&video->q_lock);
986 q->mem_ops = &vb2_dma_sg_memops;
987 q->ops = &msm_video_vb2_q_ops;
988 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
989 q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
990 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
991 q->buf_struct_size = sizeof(struct camss_buffer);
992 q->dev = video->camss->dev;
993 q->lock = &video->q_lock;
994 ret = vb2_queue_init(q);
996 dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
1000 pad->flags = MEDIA_PAD_FL_SINK;
1001 ret = media_entity_pads_init(&vdev->entity, 1, pad);
1003 dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
1005 goto error_vb2_init;
1008 mutex_init(&video->lock);
1010 if (video->camss->version == CAMSS_8x16) {
1012 video->formats = formats_pix_8x16;
1013 video->nformats = ARRAY_SIZE(formats_pix_8x16);
1015 video->formats = formats_rdi_8x16;
1016 video->nformats = ARRAY_SIZE(formats_rdi_8x16);
1018 } else if (video->camss->version == CAMSS_8x96 ||
1019 video->camss->version == CAMSS_660) {
1021 video->formats = formats_pix_8x96;
1022 video->nformats = ARRAY_SIZE(formats_pix_8x96);
1024 video->formats = formats_rdi_8x96;
1025 video->nformats = ARRAY_SIZE(formats_rdi_8x96);
1027 } else if (video->camss->version == CAMSS_845 ||
1028 video->camss->version == CAMSS_8250) {
1029 video->formats = formats_rdi_845;
1030 video->nformats = ARRAY_SIZE(formats_rdi_845);
1033 goto error_video_register;
1036 ret = msm_video_init_format(video);
1038 dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
1039 goto error_video_register;
1042 vdev->fops = &msm_vid_fops;
1043 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING
1044 | V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
1045 vdev->ioctl_ops = &msm_vid_ioctl_ops;
1046 vdev->release = msm_video_release;
1047 vdev->v4l2_dev = v4l2_dev;
1048 vdev->vfl_dir = VFL_DIR_RX;
1049 vdev->queue = &video->vb2_q;
1050 vdev->lock = &video->lock;
1051 strscpy(vdev->name, name, sizeof(vdev->name));
1053 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1055 dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
1057 goto error_video_register;
1060 video_set_drvdata(vdev, video);
1061 atomic_inc(&video->camss->ref_count);
1065 error_video_register:
1066 media_entity_cleanup(&vdev->entity);
1067 mutex_destroy(&video->lock);
1069 mutex_destroy(&video->q_lock);
1074 void msm_video_unregister(struct camss_video *video)
1076 atomic_inc(&video->camss->ref_count);
1077 vb2_video_unregister_device(&video->vdev);
1078 atomic_dec(&video->camss->ref_count);