1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * camss-video.c
4 *
5 * Qualcomm MSM Camera Subsystem - V4L2 device node
6 *
7 * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
8 * Copyright (C) 2015-2018 Linaro Ltd.
9 */
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>
17
18 #include "camss-video.h"
19 #include "camss.h"
20
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
26
27 struct fract {
28 u8 numerator;
29 u8 denominator;
30 };
31
32 /*
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)
40 */
41 struct camss_format_info {
42 u32 code;
43 u32 pixelformat;
44 u8 planes;
45 struct fract hsub[3];
46 struct fract vsub[3];
47 unsigned int bpp[3];
48 };
49
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 } },
85 };
86
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 } },
134 };
135
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_Y10_1X10, V4L2_PIX_FMT_Y10P, 1,
180 { { 1, 1 } }, { { 1, 1 } }, { 10 } },
181 { MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, V4L2_PIX_FMT_Y10, 1,
182 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
183 };
184
185 static const struct camss_format_info formats_pix_8x16[] = {
186 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1,
187 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
188 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1,
189 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
190 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
191 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
192 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
193 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
194 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1,
195 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
196 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1,
197 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
198 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
199 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
200 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
201 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
202 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1,
203 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
204 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1,
205 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
206 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1,
207 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
208 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1,
209 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
210 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1,
211 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
212 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1,
213 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
214 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1,
215 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
216 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1,
217 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
218 };
219
220 static const struct camss_format_info formats_pix_8x96[] = {
221 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1,
222 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
223 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1,
224 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
225 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
226 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
227 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
228 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
229 { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1,
230 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
231 { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1,
232 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
233 { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
234 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
235 { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
236 { { 1, 1 } }, { { 2, 3 } }, { 8 } },
237 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1,
238 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
239 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1,
240 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
241 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1,
242 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
243 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1,
244 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
245 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1,
246 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
247 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1,
248 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
249 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1,
250 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
251 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1,
252 { { 1, 1 } }, { { 1, 2 } }, { 8 } },
253 { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
254 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
255 { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
256 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
257 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
258 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
259 { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
260 { { 1, 1 } }, { { 1, 1 } }, { 16 } },
261 };
262
263 /* -----------------------------------------------------------------------------
264 * Helper functions
265 */
266
video_find_format(u32 code,u32 pixelformat,const struct camss_format_info * formats,unsigned int nformats)267 static int video_find_format(u32 code, u32 pixelformat,
268 const struct camss_format_info *formats,
269 unsigned int nformats)
270 {
271 int i;
272
273 for (i = 0; i < nformats; i++) {
274 if (formats[i].code == code &&
275 formats[i].pixelformat == pixelformat)
276 return i;
277 }
278
279 for (i = 0; i < nformats; i++)
280 if (formats[i].code == code)
281 return i;
282
283 WARN_ON(1);
284
285 return -EINVAL;
286 }
287
288 /*
289 * video_mbus_to_pix_mp - Convert v4l2_mbus_framefmt to v4l2_pix_format_mplane
290 * @mbus: v4l2_mbus_framefmt format (input)
291 * @pix: v4l2_pix_format_mplane format (output)
292 * @f: a pointer to formats array element to be used for the conversion
293 * @alignment: bytesperline alignment value
294 *
295 * Fill the output pix structure with information from the input mbus format.
296 *
297 * Return 0 on success or a negative error code otherwise
298 */
video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt * mbus,struct v4l2_pix_format_mplane * pix,const struct camss_format_info * f,unsigned int alignment)299 static int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus,
300 struct v4l2_pix_format_mplane *pix,
301 const struct camss_format_info *f,
302 unsigned int alignment)
303 {
304 unsigned int i;
305 u32 bytesperline;
306
307 memset(pix, 0, sizeof(*pix));
308 v4l2_fill_pix_format_mplane(pix, mbus);
309 pix->pixelformat = f->pixelformat;
310 pix->num_planes = f->planes;
311 for (i = 0; i < pix->num_planes; i++) {
312 bytesperline = pix->width / f->hsub[i].numerator *
313 f->hsub[i].denominator * f->bpp[i] / 8;
314 bytesperline = ALIGN(bytesperline, alignment);
315 pix->plane_fmt[i].bytesperline = bytesperline;
316 pix->plane_fmt[i].sizeimage = pix->height /
317 f->vsub[i].numerator * f->vsub[i].denominator *
318 bytesperline;
319 }
320
321 return 0;
322 }
323
video_remote_subdev(struct camss_video * video,u32 * pad)324 static struct v4l2_subdev *video_remote_subdev(struct camss_video *video,
325 u32 *pad)
326 {
327 struct media_pad *remote;
328
329 remote = media_entity_remote_pad(&video->pad);
330
331 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
332 return NULL;
333
334 if (pad)
335 *pad = remote->index;
336
337 return media_entity_to_v4l2_subdev(remote->entity);
338 }
339
video_get_subdev_format(struct camss_video * video,struct v4l2_format * format)340 static int video_get_subdev_format(struct camss_video *video,
341 struct v4l2_format *format)
342 {
343 struct v4l2_subdev_format fmt;
344 struct v4l2_subdev *subdev;
345 u32 pad;
346 int ret;
347
348 subdev = video_remote_subdev(video, &pad);
349 if (subdev == NULL)
350 return -EPIPE;
351
352 fmt.pad = pad;
353 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
354
355 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
356 if (ret)
357 return ret;
358
359 ret = video_find_format(fmt.format.code,
360 format->fmt.pix_mp.pixelformat,
361 video->formats, video->nformats);
362 if (ret < 0)
363 return ret;
364
365 format->type = video->type;
366
367 return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp,
368 &video->formats[ret], video->bpl_alignment);
369 }
370
371 /* -----------------------------------------------------------------------------
372 * Video queue operations
373 */
374
video_queue_setup(struct vb2_queue * q,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])375 static int video_queue_setup(struct vb2_queue *q,
376 unsigned int *num_buffers, unsigned int *num_planes,
377 unsigned int sizes[], struct device *alloc_devs[])
378 {
379 struct camss_video *video = vb2_get_drv_priv(q);
380 const struct v4l2_pix_format_mplane *format =
381 &video->active_fmt.fmt.pix_mp;
382 unsigned int i;
383
384 if (*num_planes) {
385 if (*num_planes != format->num_planes)
386 return -EINVAL;
387
388 for (i = 0; i < *num_planes; i++)
389 if (sizes[i] < format->plane_fmt[i].sizeimage)
390 return -EINVAL;
391
392 return 0;
393 }
394
395 *num_planes = format->num_planes;
396
397 for (i = 0; i < *num_planes; i++)
398 sizes[i] = format->plane_fmt[i].sizeimage;
399
400 return 0;
401 }
402
video_buf_init(struct vb2_buffer * vb)403 static int video_buf_init(struct vb2_buffer *vb)
404 {
405 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
406 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
407 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
408 vb);
409 const struct v4l2_pix_format_mplane *format =
410 &video->active_fmt.fmt.pix_mp;
411 struct sg_table *sgt;
412 unsigned int i;
413
414 for (i = 0; i < format->num_planes; i++) {
415 sgt = vb2_dma_sg_plane_desc(vb, i);
416 if (!sgt)
417 return -EFAULT;
418
419 buffer->addr[i] = sg_dma_address(sgt->sgl);
420 }
421
422 if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
423 format->pixelformat == V4L2_PIX_FMT_NV21 ||
424 format->pixelformat == V4L2_PIX_FMT_NV16 ||
425 format->pixelformat == V4L2_PIX_FMT_NV61)
426 buffer->addr[1] = buffer->addr[0] +
427 format->plane_fmt[0].bytesperline *
428 format->height;
429
430 return 0;
431 }
432
video_buf_prepare(struct vb2_buffer * vb)433 static int video_buf_prepare(struct vb2_buffer *vb)
434 {
435 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
436 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
437 const struct v4l2_pix_format_mplane *format =
438 &video->active_fmt.fmt.pix_mp;
439 unsigned int i;
440
441 for (i = 0; i < format->num_planes; i++) {
442 if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i))
443 return -EINVAL;
444
445 vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage);
446 }
447
448 vbuf->field = V4L2_FIELD_NONE;
449
450 return 0;
451 }
452
video_buf_queue(struct vb2_buffer * vb)453 static void video_buf_queue(struct vb2_buffer *vb)
454 {
455 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
456 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
457 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
458 vb);
459
460 video->ops->queue_buffer(video, buffer);
461 }
462
video_check_format(struct camss_video * video)463 static int video_check_format(struct camss_video *video)
464 {
465 struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
466 struct v4l2_format format;
467 struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
468 int ret;
469
470 sd_pix->pixelformat = pix->pixelformat;
471 ret = video_get_subdev_format(video, &format);
472 if (ret < 0)
473 return ret;
474
475 if (pix->pixelformat != sd_pix->pixelformat ||
476 pix->height != sd_pix->height ||
477 pix->width != sd_pix->width ||
478 pix->num_planes != sd_pix->num_planes ||
479 pix->field != format.fmt.pix_mp.field)
480 return -EPIPE;
481
482 return 0;
483 }
484
video_start_streaming(struct vb2_queue * q,unsigned int count)485 static int video_start_streaming(struct vb2_queue *q, unsigned int count)
486 {
487 struct camss_video *video = vb2_get_drv_priv(q);
488 struct video_device *vdev = &video->vdev;
489 struct media_entity *entity;
490 struct media_pad *pad;
491 struct v4l2_subdev *subdev;
492 int ret;
493
494 ret = media_pipeline_start(&vdev->entity, &video->pipe);
495 if (ret < 0)
496 goto flush_buffers;
497
498 ret = video_check_format(video);
499 if (ret < 0)
500 goto error;
501
502 entity = &vdev->entity;
503 while (1) {
504 pad = &entity->pads[0];
505 if (!(pad->flags & MEDIA_PAD_FL_SINK))
506 break;
507
508 pad = media_entity_remote_pad(pad);
509 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
510 break;
511
512 entity = pad->entity;
513 subdev = media_entity_to_v4l2_subdev(entity);
514
515 ret = v4l2_subdev_call(subdev, video, s_stream, 1);
516 if (ret < 0 && ret != -ENOIOCTLCMD)
517 goto error;
518 }
519
520 return 0;
521
522 error:
523 media_pipeline_stop(&vdev->entity);
524
525 flush_buffers:
526 video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
527
528 return ret;
529 }
530
video_stop_streaming(struct vb2_queue * q)531 static void video_stop_streaming(struct vb2_queue *q)
532 {
533 struct camss_video *video = vb2_get_drv_priv(q);
534 struct video_device *vdev = &video->vdev;
535 struct media_entity *entity;
536 struct media_pad *pad;
537 struct v4l2_subdev *subdev;
538
539 entity = &vdev->entity;
540 while (1) {
541 pad = &entity->pads[0];
542 if (!(pad->flags & MEDIA_PAD_FL_SINK))
543 break;
544
545 pad = media_entity_remote_pad(pad);
546 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
547 break;
548
549 entity = pad->entity;
550 subdev = media_entity_to_v4l2_subdev(entity);
551
552 v4l2_subdev_call(subdev, video, s_stream, 0);
553 }
554
555 media_pipeline_stop(&vdev->entity);
556
557 video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
558 }
559
560 static const struct vb2_ops msm_video_vb2_q_ops = {
561 .queue_setup = video_queue_setup,
562 .wait_prepare = vb2_ops_wait_prepare,
563 .wait_finish = vb2_ops_wait_finish,
564 .buf_init = video_buf_init,
565 .buf_prepare = video_buf_prepare,
566 .buf_queue = video_buf_queue,
567 .start_streaming = video_start_streaming,
568 .stop_streaming = video_stop_streaming,
569 };
570
571 /* -----------------------------------------------------------------------------
572 * V4L2 ioctls
573 */
574
video_querycap(struct file * file,void * fh,struct v4l2_capability * cap)575 static int video_querycap(struct file *file, void *fh,
576 struct v4l2_capability *cap)
577 {
578 struct camss_video *video = video_drvdata(file);
579
580 strscpy(cap->driver, "qcom-camss", sizeof(cap->driver));
581 strscpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
582 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
583 dev_name(video->camss->dev));
584
585 return 0;
586 }
587
video_enum_fmt(struct file * file,void * fh,struct v4l2_fmtdesc * f)588 static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
589 {
590 struct camss_video *video = video_drvdata(file);
591 int i, j, k;
592 u32 mcode = f->mbus_code;
593
594 if (f->type != video->type)
595 return -EINVAL;
596
597 if (f->index >= video->nformats)
598 return -EINVAL;
599
600 /*
601 * Find index "i" of "k"th unique pixelformat in formats array.
602 *
603 * If f->mbus_code passed to video_enum_fmt() is not zero, a device
604 * with V4L2_CAP_IO_MC capability restricts enumeration to only the
605 * pixel formats that can be produced from that media bus code.
606 * This is implemented by skipping video->formats[] entries with
607 * code != f->mbus_code (if f->mbus_code is not zero).
608 * If the f->mbus_code passed to video_enum_fmt() is not supported,
609 * -EINVAL is returned.
610 * If f->mbus_code is zero, all the pixel formats are enumerated.
611 */
612 k = -1;
613 for (i = 0; i < video->nformats; i++) {
614 if (mcode != 0 && video->formats[i].code != mcode)
615 continue;
616
617 for (j = 0; j < i; j++) {
618 if (mcode != 0 && video->formats[j].code != mcode)
619 continue;
620 if (video->formats[i].pixelformat ==
621 video->formats[j].pixelformat)
622 break;
623 }
624
625 if (j == i)
626 k++;
627
628 if (k == f->index)
629 break;
630 }
631
632 if (k == -1 || k < f->index)
633 /*
634 * All the unique pixel formats matching the arguments
635 * have been enumerated (k >= 0 and f->index > 0), or
636 * no pixel formats match the non-zero f->mbus_code (k == -1).
637 */
638 return -EINVAL;
639
640 f->pixelformat = video->formats[i].pixelformat;
641
642 return 0;
643 }
644
video_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)645 static int video_enum_framesizes(struct file *file, void *fh,
646 struct v4l2_frmsizeenum *fsize)
647 {
648 struct camss_video *video = video_drvdata(file);
649 int i;
650
651 if (fsize->index)
652 return -EINVAL;
653
654 /* Only accept pixel format present in the formats[] table */
655 for (i = 0; i < video->nformats; i++) {
656 if (video->formats[i].pixelformat == fsize->pixel_format)
657 break;
658 }
659
660 if (i == video->nformats)
661 return -EINVAL;
662
663 fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
664 fsize->stepwise.min_width = CAMSS_FRAME_MIN_WIDTH;
665 fsize->stepwise.max_width = CAMSS_FRAME_MAX_WIDTH;
666 fsize->stepwise.min_height = CAMSS_FRAME_MIN_HEIGHT;
667 fsize->stepwise.max_height = (video->line_based) ?
668 CAMSS_FRAME_MAX_HEIGHT_PIX : CAMSS_FRAME_MAX_HEIGHT_RDI;
669 fsize->stepwise.step_width = 1;
670 fsize->stepwise.step_height = 1;
671
672 return 0;
673 }
674
video_g_fmt(struct file * file,void * fh,struct v4l2_format * f)675 static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
676 {
677 struct camss_video *video = video_drvdata(file);
678
679 *f = video->active_fmt;
680
681 return 0;
682 }
683
__video_try_fmt(struct camss_video * video,struct v4l2_format * f)684 static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
685 {
686 struct v4l2_pix_format_mplane *pix_mp;
687 const struct camss_format_info *fi;
688 struct v4l2_plane_pix_format *p;
689 u32 bytesperline[3] = { 0 };
690 u32 sizeimage[3] = { 0 };
691 u32 width, height;
692 u32 bpl, lines;
693 int i, j;
694
695 pix_mp = &f->fmt.pix_mp;
696
697 if (video->line_based)
698 for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
699 p = &pix_mp->plane_fmt[i];
700 bytesperline[i] = clamp_t(u32, p->bytesperline,
701 1, 65528);
702 sizeimage[i] = clamp_t(u32, p->sizeimage,
703 bytesperline[i],
704 bytesperline[i] * CAMSS_FRAME_MAX_HEIGHT_PIX);
705 }
706
707 for (j = 0; j < video->nformats; j++)
708 if (pix_mp->pixelformat == video->formats[j].pixelformat)
709 break;
710
711 if (j == video->nformats)
712 j = 0; /* default format */
713
714 fi = &video->formats[j];
715 width = pix_mp->width;
716 height = pix_mp->height;
717
718 memset(pix_mp, 0, sizeof(*pix_mp));
719
720 pix_mp->pixelformat = fi->pixelformat;
721 pix_mp->width = clamp_t(u32, width, 1, CAMSS_FRAME_MAX_WIDTH);
722 pix_mp->height = clamp_t(u32, height, 1, CAMSS_FRAME_MAX_HEIGHT_RDI);
723 pix_mp->num_planes = fi->planes;
724 for (i = 0; i < pix_mp->num_planes; i++) {
725 bpl = pix_mp->width / fi->hsub[i].numerator *
726 fi->hsub[i].denominator * fi->bpp[i] / 8;
727 bpl = ALIGN(bpl, video->bpl_alignment);
728 pix_mp->plane_fmt[i].bytesperline = bpl;
729 pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
730 fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
731 }
732
733 pix_mp->field = V4L2_FIELD_NONE;
734 pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
735 pix_mp->flags = 0;
736 pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
737 pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
738 pix_mp->colorspace, pix_mp->ycbcr_enc);
739 pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
740
741 if (video->line_based)
742 for (i = 0; i < pix_mp->num_planes; i++) {
743 p = &pix_mp->plane_fmt[i];
744 p->bytesperline = clamp_t(u32, p->bytesperline,
745 1, 65528);
746 p->sizeimage = clamp_t(u32, p->sizeimage,
747 p->bytesperline,
748 p->bytesperline * CAMSS_FRAME_MAX_HEIGHT_PIX);
749 lines = p->sizeimage / p->bytesperline;
750
751 if (p->bytesperline < bytesperline[i])
752 p->bytesperline = ALIGN(bytesperline[i], 8);
753
754 if (p->sizeimage < p->bytesperline * lines)
755 p->sizeimage = p->bytesperline * lines;
756
757 if (p->sizeimage < sizeimage[i])
758 p->sizeimage = sizeimage[i];
759 }
760
761 return 0;
762 }
763
video_try_fmt(struct file * file,void * fh,struct v4l2_format * f)764 static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
765 {
766 struct camss_video *video = video_drvdata(file);
767
768 return __video_try_fmt(video, f);
769 }
770
video_s_fmt(struct file * file,void * fh,struct v4l2_format * f)771 static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
772 {
773 struct camss_video *video = video_drvdata(file);
774 int ret;
775
776 if (vb2_is_busy(&video->vb2_q))
777 return -EBUSY;
778
779 ret = __video_try_fmt(video, f);
780 if (ret < 0)
781 return ret;
782
783 video->active_fmt = *f;
784
785 return 0;
786 }
787
video_enum_input(struct file * file,void * fh,struct v4l2_input * input)788 static int video_enum_input(struct file *file, void *fh,
789 struct v4l2_input *input)
790 {
791 if (input->index > 0)
792 return -EINVAL;
793
794 strscpy(input->name, "camera", sizeof(input->name));
795 input->type = V4L2_INPUT_TYPE_CAMERA;
796
797 return 0;
798 }
799
video_g_input(struct file * file,void * fh,unsigned int * input)800 static int video_g_input(struct file *file, void *fh, unsigned int *input)
801 {
802 *input = 0;
803
804 return 0;
805 }
806
video_s_input(struct file * file,void * fh,unsigned int input)807 static int video_s_input(struct file *file, void *fh, unsigned int input)
808 {
809 return input == 0 ? 0 : -EINVAL;
810 }
811
812 static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
813 .vidioc_querycap = video_querycap,
814 .vidioc_enum_fmt_vid_cap = video_enum_fmt,
815 .vidioc_enum_framesizes = video_enum_framesizes,
816 .vidioc_g_fmt_vid_cap_mplane = video_g_fmt,
817 .vidioc_s_fmt_vid_cap_mplane = video_s_fmt,
818 .vidioc_try_fmt_vid_cap_mplane = video_try_fmt,
819 .vidioc_reqbufs = vb2_ioctl_reqbufs,
820 .vidioc_querybuf = vb2_ioctl_querybuf,
821 .vidioc_qbuf = vb2_ioctl_qbuf,
822 .vidioc_expbuf = vb2_ioctl_expbuf,
823 .vidioc_dqbuf = vb2_ioctl_dqbuf,
824 .vidioc_create_bufs = vb2_ioctl_create_bufs,
825 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
826 .vidioc_streamon = vb2_ioctl_streamon,
827 .vidioc_streamoff = vb2_ioctl_streamoff,
828 .vidioc_enum_input = video_enum_input,
829 .vidioc_g_input = video_g_input,
830 .vidioc_s_input = video_s_input,
831 };
832
833 /* -----------------------------------------------------------------------------
834 * V4L2 file operations
835 */
836
video_open(struct file * file)837 static int video_open(struct file *file)
838 {
839 struct video_device *vdev = video_devdata(file);
840 struct camss_video *video = video_drvdata(file);
841 struct v4l2_fh *vfh;
842 int ret;
843
844 mutex_lock(&video->lock);
845
846 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
847 if (vfh == NULL) {
848 ret = -ENOMEM;
849 goto error_alloc;
850 }
851
852 v4l2_fh_init(vfh, vdev);
853 v4l2_fh_add(vfh);
854
855 file->private_data = vfh;
856
857 ret = v4l2_pipeline_pm_get(&vdev->entity);
858 if (ret < 0) {
859 dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
860 ret);
861 goto error_pm_use;
862 }
863
864 mutex_unlock(&video->lock);
865
866 return 0;
867
868 error_pm_use:
869 v4l2_fh_release(file);
870
871 error_alloc:
872 mutex_unlock(&video->lock);
873
874 return ret;
875 }
876
video_release(struct file * file)877 static int video_release(struct file *file)
878 {
879 struct video_device *vdev = video_devdata(file);
880
881 vb2_fop_release(file);
882
883 v4l2_pipeline_pm_put(&vdev->entity);
884
885 file->private_data = NULL;
886
887 return 0;
888 }
889
890 static const struct v4l2_file_operations msm_vid_fops = {
891 .owner = THIS_MODULE,
892 .unlocked_ioctl = video_ioctl2,
893 .open = video_open,
894 .release = video_release,
895 .poll = vb2_fop_poll,
896 .mmap = vb2_fop_mmap,
897 .read = vb2_fop_read,
898 };
899
900 /* -----------------------------------------------------------------------------
901 * CAMSS video core
902 */
903
msm_video_release(struct video_device * vdev)904 static void msm_video_release(struct video_device *vdev)
905 {
906 struct camss_video *video = video_get_drvdata(vdev);
907
908 media_entity_cleanup(&vdev->entity);
909
910 mutex_destroy(&video->q_lock);
911 mutex_destroy(&video->lock);
912
913 if (atomic_dec_and_test(&video->camss->ref_count))
914 camss_delete(video->camss);
915 }
916
917 /*
918 * msm_video_init_format - Helper function to initialize format
919 * @video: struct camss_video
920 *
921 * Initialize pad format with default value.
922 *
923 * Return 0 on success or a negative error code otherwise
924 */
msm_video_init_format(struct camss_video * video)925 static int msm_video_init_format(struct camss_video *video)
926 {
927 int ret;
928 struct v4l2_format format = {
929 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
930 .fmt.pix_mp = {
931 .width = 1920,
932 .height = 1080,
933 .pixelformat = video->formats[0].pixelformat,
934 },
935 };
936
937 ret = __video_try_fmt(video, &format);
938 if (ret < 0)
939 return ret;
940
941 video->active_fmt = format;
942
943 return 0;
944 }
945
946 /*
947 * msm_video_register - Register a video device node
948 * @video: struct camss_video
949 * @v4l2_dev: V4L2 device
950 * @name: name to be used for the video device node
951 *
952 * Initialize and register a video device node to a V4L2 device. Also
953 * initialize the vb2 queue.
954 *
955 * Return 0 on success or a negative error code otherwise
956 */
957
msm_video_register(struct camss_video * video,struct v4l2_device * v4l2_dev,const char * name,int is_pix)958 int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
959 const char *name, int is_pix)
960 {
961 struct media_pad *pad = &video->pad;
962 struct video_device *vdev;
963 struct vb2_queue *q;
964 int ret;
965
966 vdev = &video->vdev;
967
968 mutex_init(&video->q_lock);
969
970 q = &video->vb2_q;
971 q->drv_priv = video;
972 q->mem_ops = &vb2_dma_sg_memops;
973 q->ops = &msm_video_vb2_q_ops;
974 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
975 q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
976 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
977 q->buf_struct_size = sizeof(struct camss_buffer);
978 q->dev = video->camss->dev;
979 q->lock = &video->q_lock;
980 ret = vb2_queue_init(q);
981 if (ret < 0) {
982 dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
983 goto error_vb2_init;
984 }
985
986 pad->flags = MEDIA_PAD_FL_SINK;
987 ret = media_entity_pads_init(&vdev->entity, 1, pad);
988 if (ret < 0) {
989 dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
990 ret);
991 goto error_vb2_init;
992 }
993
994 mutex_init(&video->lock);
995
996 if (video->camss->version == CAMSS_8x16) {
997 if (is_pix) {
998 video->formats = formats_pix_8x16;
999 video->nformats = ARRAY_SIZE(formats_pix_8x16);
1000 } else {
1001 video->formats = formats_rdi_8x16;
1002 video->nformats = ARRAY_SIZE(formats_rdi_8x16);
1003 }
1004 } else if (video->camss->version == CAMSS_8x96 ||
1005 video->camss->version == CAMSS_660) {
1006 if (is_pix) {
1007 video->formats = formats_pix_8x96;
1008 video->nformats = ARRAY_SIZE(formats_pix_8x96);
1009 } else {
1010 video->formats = formats_rdi_8x96;
1011 video->nformats = ARRAY_SIZE(formats_rdi_8x96);
1012 }
1013 } else if (video->camss->version == CAMSS_845) {
1014 video->formats = formats_rdi_845;
1015 video->nformats = ARRAY_SIZE(formats_rdi_845);
1016 } else {
1017 ret = -EINVAL;
1018 goto error_video_register;
1019 }
1020
1021 ret = msm_video_init_format(video);
1022 if (ret < 0) {
1023 dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
1024 goto error_video_register;
1025 }
1026
1027 vdev->fops = &msm_vid_fops;
1028 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING
1029 | V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
1030 vdev->ioctl_ops = &msm_vid_ioctl_ops;
1031 vdev->release = msm_video_release;
1032 vdev->v4l2_dev = v4l2_dev;
1033 vdev->vfl_dir = VFL_DIR_RX;
1034 vdev->queue = &video->vb2_q;
1035 vdev->lock = &video->lock;
1036 strscpy(vdev->name, name, sizeof(vdev->name));
1037
1038 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1039 if (ret < 0) {
1040 dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
1041 ret);
1042 goto error_video_register;
1043 }
1044
1045 video_set_drvdata(vdev, video);
1046 atomic_inc(&video->camss->ref_count);
1047
1048 return 0;
1049
1050 error_video_register:
1051 media_entity_cleanup(&vdev->entity);
1052 mutex_destroy(&video->lock);
1053 error_vb2_init:
1054 mutex_destroy(&video->q_lock);
1055
1056 return ret;
1057 }
1058
msm_video_unregister(struct camss_video * video)1059 void msm_video_unregister(struct camss_video *video)
1060 {
1061 atomic_inc(&video->camss->ref_count);
1062 vb2_video_unregister_device(&video->vdev);
1063 atomic_dec(&video->camss->ref_count);
1064 }
1065