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_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 } },
185 };
186
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 } },
220 };
221
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 } },
263 };
264
265 /* -----------------------------------------------------------------------------
266 * Helper functions
267 */
268
video_find_format(u32 code,u32 pixelformat,const struct camss_format_info * formats,unsigned int nformats)269 static int video_find_format(u32 code, u32 pixelformat,
270 const struct camss_format_info *formats,
271 unsigned int nformats)
272 {
273 int i;
274
275 for (i = 0; i < nformats; i++) {
276 if (formats[i].code == code &&
277 formats[i].pixelformat == pixelformat)
278 return i;
279 }
280
281 for (i = 0; i < nformats; i++)
282 if (formats[i].code == code)
283 return i;
284
285 WARN_ON(1);
286
287 return -EINVAL;
288 }
289
290 /*
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
296 *
297 * Fill the output pix structure with information from the input mbus format.
298 *
299 * Return 0 on success or a negative error code otherwise
300 */
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)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)
305 {
306 unsigned int i;
307 u32 bytesperline;
308
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 *
320 bytesperline;
321 }
322
323 return 0;
324 }
325
video_remote_subdev(struct camss_video * video,u32 * pad)326 static struct v4l2_subdev *video_remote_subdev(struct camss_video *video,
327 u32 *pad)
328 {
329 struct media_pad *remote;
330
331 remote = media_entity_remote_pad(&video->pad);
332
333 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
334 return NULL;
335
336 if (pad)
337 *pad = remote->index;
338
339 return media_entity_to_v4l2_subdev(remote->entity);
340 }
341
video_get_subdev_format(struct camss_video * video,struct v4l2_format * format)342 static int video_get_subdev_format(struct camss_video *video,
343 struct v4l2_format *format)
344 {
345 struct v4l2_subdev_format fmt;
346 struct v4l2_subdev *subdev;
347 u32 pad;
348 int ret;
349
350 subdev = video_remote_subdev(video, &pad);
351 if (subdev == NULL)
352 return -EPIPE;
353
354 fmt.pad = pad;
355 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
356
357 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
358 if (ret)
359 return ret;
360
361 ret = video_find_format(fmt.format.code,
362 format->fmt.pix_mp.pixelformat,
363 video->formats, video->nformats);
364 if (ret < 0)
365 return ret;
366
367 format->type = video->type;
368
369 return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp,
370 &video->formats[ret], video->bpl_alignment);
371 }
372
373 /* -----------------------------------------------------------------------------
374 * Video queue operations
375 */
376
video_queue_setup(struct vb2_queue * q,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])377 static int video_queue_setup(struct vb2_queue *q,
378 unsigned int *num_buffers, unsigned int *num_planes,
379 unsigned int sizes[], struct device *alloc_devs[])
380 {
381 struct camss_video *video = vb2_get_drv_priv(q);
382 const struct v4l2_pix_format_mplane *format =
383 &video->active_fmt.fmt.pix_mp;
384 unsigned int i;
385
386 if (*num_planes) {
387 if (*num_planes != format->num_planes)
388 return -EINVAL;
389
390 for (i = 0; i < *num_planes; i++)
391 if (sizes[i] < format->plane_fmt[i].sizeimage)
392 return -EINVAL;
393
394 return 0;
395 }
396
397 *num_planes = format->num_planes;
398
399 for (i = 0; i < *num_planes; i++)
400 sizes[i] = format->plane_fmt[i].sizeimage;
401
402 return 0;
403 }
404
video_buf_init(struct vb2_buffer * vb)405 static int video_buf_init(struct vb2_buffer *vb)
406 {
407 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
408 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
409 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
410 vb);
411 const struct v4l2_pix_format_mplane *format =
412 &video->active_fmt.fmt.pix_mp;
413 struct sg_table *sgt;
414 unsigned int i;
415
416 for (i = 0; i < format->num_planes; i++) {
417 sgt = vb2_dma_sg_plane_desc(vb, i);
418 if (!sgt)
419 return -EFAULT;
420
421 buffer->addr[i] = sg_dma_address(sgt->sgl);
422 }
423
424 if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
425 format->pixelformat == V4L2_PIX_FMT_NV21 ||
426 format->pixelformat == V4L2_PIX_FMT_NV16 ||
427 format->pixelformat == V4L2_PIX_FMT_NV61)
428 buffer->addr[1] = buffer->addr[0] +
429 format->plane_fmt[0].bytesperline *
430 format->height;
431
432 return 0;
433 }
434
video_buf_prepare(struct vb2_buffer * vb)435 static int video_buf_prepare(struct vb2_buffer *vb)
436 {
437 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
438 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
439 const struct v4l2_pix_format_mplane *format =
440 &video->active_fmt.fmt.pix_mp;
441 unsigned int i;
442
443 for (i = 0; i < format->num_planes; i++) {
444 if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i))
445 return -EINVAL;
446
447 vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage);
448 }
449
450 vbuf->field = V4L2_FIELD_NONE;
451
452 return 0;
453 }
454
video_buf_queue(struct vb2_buffer * vb)455 static void video_buf_queue(struct vb2_buffer *vb)
456 {
457 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
458 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
459 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
460 vb);
461
462 video->ops->queue_buffer(video, buffer);
463 }
464
video_check_format(struct camss_video * video)465 static int video_check_format(struct camss_video *video)
466 {
467 struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
468 struct v4l2_format format;
469 struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
470 int ret;
471
472 sd_pix->pixelformat = pix->pixelformat;
473 ret = video_get_subdev_format(video, &format);
474 if (ret < 0)
475 return ret;
476
477 if (pix->pixelformat != sd_pix->pixelformat ||
478 pix->height != sd_pix->height ||
479 pix->width != sd_pix->width ||
480 pix->num_planes != sd_pix->num_planes ||
481 pix->field != format.fmt.pix_mp.field)
482 return -EPIPE;
483
484 return 0;
485 }
486
video_start_streaming(struct vb2_queue * q,unsigned int count)487 static int video_start_streaming(struct vb2_queue *q, unsigned int count)
488 {
489 struct camss_video *video = vb2_get_drv_priv(q);
490 struct video_device *vdev = &video->vdev;
491 struct media_entity *entity;
492 struct media_pad *pad;
493 struct v4l2_subdev *subdev;
494 int ret;
495
496 ret = media_pipeline_start(&vdev->entity, &video->pipe);
497 if (ret < 0)
498 return ret;
499
500 ret = video_check_format(video);
501 if (ret < 0)
502 goto error;
503
504 entity = &vdev->entity;
505 while (1) {
506 pad = &entity->pads[0];
507 if (!(pad->flags & MEDIA_PAD_FL_SINK))
508 break;
509
510 pad = media_entity_remote_pad(pad);
511 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
512 break;
513
514 entity = pad->entity;
515 subdev = media_entity_to_v4l2_subdev(entity);
516
517 ret = v4l2_subdev_call(subdev, video, s_stream, 1);
518 if (ret < 0 && ret != -ENOIOCTLCMD)
519 goto error;
520 }
521
522 return 0;
523
524 error:
525 media_pipeline_stop(&vdev->entity);
526
527 video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
528
529 return ret;
530 }
531
video_stop_streaming(struct vb2_queue * q)532 static void video_stop_streaming(struct vb2_queue *q)
533 {
534 struct camss_video *video = vb2_get_drv_priv(q);
535 struct video_device *vdev = &video->vdev;
536 struct media_entity *entity;
537 struct media_pad *pad;
538 struct v4l2_subdev *subdev;
539
540 entity = &vdev->entity;
541 while (1) {
542 pad = &entity->pads[0];
543 if (!(pad->flags & MEDIA_PAD_FL_SINK))
544 break;
545
546 pad = media_entity_remote_pad(pad);
547 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
548 break;
549
550 entity = pad->entity;
551 subdev = media_entity_to_v4l2_subdev(entity);
552
553 v4l2_subdev_call(subdev, video, s_stream, 0);
554 }
555
556 media_pipeline_stop(&vdev->entity);
557
558 video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
559 }
560
561 static const struct vb2_ops msm_video_vb2_q_ops = {
562 .queue_setup = video_queue_setup,
563 .wait_prepare = vb2_ops_wait_prepare,
564 .wait_finish = vb2_ops_wait_finish,
565 .buf_init = video_buf_init,
566 .buf_prepare = video_buf_prepare,
567 .buf_queue = video_buf_queue,
568 .start_streaming = video_start_streaming,
569 .stop_streaming = video_stop_streaming,
570 };
571
572 /* -----------------------------------------------------------------------------
573 * V4L2 ioctls
574 */
575
video_querycap(struct file * file,void * fh,struct v4l2_capability * cap)576 static int video_querycap(struct file *file, void *fh,
577 struct v4l2_capability *cap)
578 {
579 strscpy(cap->driver, "qcom-camss", sizeof(cap->driver));
580 strscpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
581
582 return 0;
583 }
584
video_enum_fmt(struct file * file,void * fh,struct v4l2_fmtdesc * f)585 static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
586 {
587 struct camss_video *video = video_drvdata(file);
588 int i, j, k;
589 u32 mcode = f->mbus_code;
590
591 if (f->type != video->type)
592 return -EINVAL;
593
594 if (f->index >= video->nformats)
595 return -EINVAL;
596
597 /*
598 * Find index "i" of "k"th unique pixelformat in formats array.
599 *
600 * If f->mbus_code passed to video_enum_fmt() is not zero, a device
601 * with V4L2_CAP_IO_MC capability restricts enumeration to only the
602 * pixel formats that can be produced from that media bus code.
603 * This is implemented by skipping video->formats[] entries with
604 * code != f->mbus_code (if f->mbus_code is not zero).
605 * If the f->mbus_code passed to video_enum_fmt() is not supported,
606 * -EINVAL is returned.
607 * If f->mbus_code is zero, all the pixel formats are enumerated.
608 */
609 k = -1;
610 for (i = 0; i < video->nformats; i++) {
611 if (mcode != 0 && video->formats[i].code != mcode)
612 continue;
613
614 for (j = 0; j < i; j++) {
615 if (mcode != 0 && video->formats[j].code != mcode)
616 continue;
617 if (video->formats[i].pixelformat ==
618 video->formats[j].pixelformat)
619 break;
620 }
621
622 if (j == i)
623 k++;
624
625 if (k == f->index)
626 break;
627 }
628
629 if (k == -1 || k < f->index)
630 /*
631 * All the unique pixel formats matching the arguments
632 * have been enumerated (k >= 0 and f->index > 0), or
633 * no pixel formats match the non-zero f->mbus_code (k == -1).
634 */
635 return -EINVAL;
636
637 f->pixelformat = video->formats[i].pixelformat;
638
639 return 0;
640 }
641
video_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)642 static int video_enum_framesizes(struct file *file, void *fh,
643 struct v4l2_frmsizeenum *fsize)
644 {
645 struct camss_video *video = video_drvdata(file);
646 int i;
647
648 if (fsize->index)
649 return -EINVAL;
650
651 /* Only accept pixel format present in the formats[] table */
652 for (i = 0; i < video->nformats; i++) {
653 if (video->formats[i].pixelformat == fsize->pixel_format)
654 break;
655 }
656
657 if (i == video->nformats)
658 return -EINVAL;
659
660 fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
661 fsize->stepwise.min_width = CAMSS_FRAME_MIN_WIDTH;
662 fsize->stepwise.max_width = CAMSS_FRAME_MAX_WIDTH;
663 fsize->stepwise.min_height = CAMSS_FRAME_MIN_HEIGHT;
664 fsize->stepwise.max_height = (video->line_based) ?
665 CAMSS_FRAME_MAX_HEIGHT_PIX : CAMSS_FRAME_MAX_HEIGHT_RDI;
666 fsize->stepwise.step_width = 1;
667 fsize->stepwise.step_height = 1;
668
669 return 0;
670 }
671
video_g_fmt(struct file * file,void * fh,struct v4l2_format * f)672 static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
673 {
674 struct camss_video *video = video_drvdata(file);
675
676 *f = video->active_fmt;
677
678 return 0;
679 }
680
__video_try_fmt(struct camss_video * video,struct v4l2_format * f)681 static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
682 {
683 struct v4l2_pix_format_mplane *pix_mp;
684 const struct camss_format_info *fi;
685 struct v4l2_plane_pix_format *p;
686 u32 bytesperline[3] = { 0 };
687 u32 sizeimage[3] = { 0 };
688 u32 width, height;
689 u32 bpl, lines;
690 int i, j;
691
692 pix_mp = &f->fmt.pix_mp;
693
694 if (video->line_based)
695 for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
696 p = &pix_mp->plane_fmt[i];
697 bytesperline[i] = clamp_t(u32, p->bytesperline,
698 1, 65528);
699 sizeimage[i] = clamp_t(u32, p->sizeimage,
700 bytesperline[i],
701 bytesperline[i] * CAMSS_FRAME_MAX_HEIGHT_PIX);
702 }
703
704 for (j = 0; j < video->nformats; j++)
705 if (pix_mp->pixelformat == video->formats[j].pixelformat)
706 break;
707
708 if (j == video->nformats)
709 j = 0; /* default format */
710
711 fi = &video->formats[j];
712 width = pix_mp->width;
713 height = pix_mp->height;
714
715 memset(pix_mp, 0, sizeof(*pix_mp));
716
717 pix_mp->pixelformat = fi->pixelformat;
718 pix_mp->width = clamp_t(u32, width, 1, CAMSS_FRAME_MAX_WIDTH);
719 pix_mp->height = clamp_t(u32, height, 1, CAMSS_FRAME_MAX_HEIGHT_RDI);
720 pix_mp->num_planes = fi->planes;
721 for (i = 0; i < pix_mp->num_planes; i++) {
722 bpl = pix_mp->width / fi->hsub[i].numerator *
723 fi->hsub[i].denominator * fi->bpp[i] / 8;
724 bpl = ALIGN(bpl, video->bpl_alignment);
725 pix_mp->plane_fmt[i].bytesperline = bpl;
726 pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
727 fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
728 }
729
730 pix_mp->field = V4L2_FIELD_NONE;
731 pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
732 pix_mp->flags = 0;
733 pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
734 pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
735 pix_mp->colorspace, pix_mp->ycbcr_enc);
736 pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
737
738 if (video->line_based)
739 for (i = 0; i < pix_mp->num_planes; i++) {
740 p = &pix_mp->plane_fmt[i];
741 p->bytesperline = clamp_t(u32, p->bytesperline,
742 1, 65528);
743 p->sizeimage = clamp_t(u32, p->sizeimage,
744 p->bytesperline,
745 p->bytesperline * CAMSS_FRAME_MAX_HEIGHT_PIX);
746 lines = p->sizeimage / p->bytesperline;
747
748 if (p->bytesperline < bytesperline[i])
749 p->bytesperline = ALIGN(bytesperline[i], 8);
750
751 if (p->sizeimage < p->bytesperline * lines)
752 p->sizeimage = p->bytesperline * lines;
753
754 if (p->sizeimage < sizeimage[i])
755 p->sizeimage = sizeimage[i];
756 }
757
758 return 0;
759 }
760
video_try_fmt(struct file * file,void * fh,struct v4l2_format * f)761 static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
762 {
763 struct camss_video *video = video_drvdata(file);
764
765 return __video_try_fmt(video, f);
766 }
767
video_s_fmt(struct file * file,void * fh,struct v4l2_format * f)768 static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
769 {
770 struct camss_video *video = video_drvdata(file);
771 int ret;
772
773 if (vb2_is_busy(&video->vb2_q))
774 return -EBUSY;
775
776 ret = __video_try_fmt(video, f);
777 if (ret < 0)
778 return ret;
779
780 video->active_fmt = *f;
781
782 return 0;
783 }
784
video_enum_input(struct file * file,void * fh,struct v4l2_input * input)785 static int video_enum_input(struct file *file, void *fh,
786 struct v4l2_input *input)
787 {
788 if (input->index > 0)
789 return -EINVAL;
790
791 strscpy(input->name, "camera", sizeof(input->name));
792 input->type = V4L2_INPUT_TYPE_CAMERA;
793
794 return 0;
795 }
796
video_g_input(struct file * file,void * fh,unsigned int * input)797 static int video_g_input(struct file *file, void *fh, unsigned int *input)
798 {
799 *input = 0;
800
801 return 0;
802 }
803
video_s_input(struct file * file,void * fh,unsigned int input)804 static int video_s_input(struct file *file, void *fh, unsigned int input)
805 {
806 return input == 0 ? 0 : -EINVAL;
807 }
808
809 static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
810 .vidioc_querycap = video_querycap,
811 .vidioc_enum_fmt_vid_cap = video_enum_fmt,
812 .vidioc_enum_framesizes = video_enum_framesizes,
813 .vidioc_g_fmt_vid_cap_mplane = video_g_fmt,
814 .vidioc_s_fmt_vid_cap_mplane = video_s_fmt,
815 .vidioc_try_fmt_vid_cap_mplane = video_try_fmt,
816 .vidioc_reqbufs = vb2_ioctl_reqbufs,
817 .vidioc_querybuf = vb2_ioctl_querybuf,
818 .vidioc_qbuf = vb2_ioctl_qbuf,
819 .vidioc_expbuf = vb2_ioctl_expbuf,
820 .vidioc_dqbuf = vb2_ioctl_dqbuf,
821 .vidioc_create_bufs = vb2_ioctl_create_bufs,
822 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
823 .vidioc_streamon = vb2_ioctl_streamon,
824 .vidioc_streamoff = vb2_ioctl_streamoff,
825 .vidioc_enum_input = video_enum_input,
826 .vidioc_g_input = video_g_input,
827 .vidioc_s_input = video_s_input,
828 };
829
830 /* -----------------------------------------------------------------------------
831 * V4L2 file operations
832 */
833
video_open(struct file * file)834 static int video_open(struct file *file)
835 {
836 struct video_device *vdev = video_devdata(file);
837 struct camss_video *video = video_drvdata(file);
838 struct v4l2_fh *vfh;
839 int ret;
840
841 mutex_lock(&video->lock);
842
843 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
844 if (vfh == NULL) {
845 ret = -ENOMEM;
846 goto error_alloc;
847 }
848
849 v4l2_fh_init(vfh, vdev);
850 v4l2_fh_add(vfh);
851
852 file->private_data = vfh;
853
854 ret = v4l2_pipeline_pm_get(&vdev->entity);
855 if (ret < 0) {
856 dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
857 ret);
858 goto error_pm_use;
859 }
860
861 mutex_unlock(&video->lock);
862
863 return 0;
864
865 error_pm_use:
866 v4l2_fh_release(file);
867
868 error_alloc:
869 mutex_unlock(&video->lock);
870
871 return ret;
872 }
873
video_release(struct file * file)874 static int video_release(struct file *file)
875 {
876 struct video_device *vdev = video_devdata(file);
877
878 vb2_fop_release(file);
879
880 v4l2_pipeline_pm_put(&vdev->entity);
881
882 file->private_data = NULL;
883
884 return 0;
885 }
886
887 static const struct v4l2_file_operations msm_vid_fops = {
888 .owner = THIS_MODULE,
889 .unlocked_ioctl = video_ioctl2,
890 .open = video_open,
891 .release = video_release,
892 .poll = vb2_fop_poll,
893 .mmap = vb2_fop_mmap,
894 .read = vb2_fop_read,
895 };
896
897 /* -----------------------------------------------------------------------------
898 * CAMSS video core
899 */
900
msm_video_release(struct video_device * vdev)901 static void msm_video_release(struct video_device *vdev)
902 {
903 struct camss_video *video = video_get_drvdata(vdev);
904
905 media_entity_cleanup(&vdev->entity);
906
907 mutex_destroy(&video->q_lock);
908 mutex_destroy(&video->lock);
909
910 if (atomic_dec_and_test(&video->camss->ref_count))
911 camss_delete(video->camss);
912 }
913
914 /*
915 * msm_video_init_format - Helper function to initialize format
916 * @video: struct camss_video
917 *
918 * Initialize pad format with default value.
919 *
920 * Return 0 on success or a negative error code otherwise
921 */
msm_video_init_format(struct camss_video * video)922 static int msm_video_init_format(struct camss_video *video)
923 {
924 int ret;
925 struct v4l2_format format = {
926 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
927 .fmt.pix_mp = {
928 .width = 1920,
929 .height = 1080,
930 .pixelformat = video->formats[0].pixelformat,
931 },
932 };
933
934 ret = __video_try_fmt(video, &format);
935 if (ret < 0)
936 return ret;
937
938 video->active_fmt = format;
939
940 return 0;
941 }
942
943 /*
944 * msm_video_register - Register a video device node
945 * @video: struct camss_video
946 * @v4l2_dev: V4L2 device
947 * @name: name to be used for the video device node
948 *
949 * Initialize and register a video device node to a V4L2 device. Also
950 * initialize the vb2 queue.
951 *
952 * Return 0 on success or a negative error code otherwise
953 */
954
msm_video_register(struct camss_video * video,struct v4l2_device * v4l2_dev,const char * name,int is_pix)955 int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
956 const char *name, int is_pix)
957 {
958 struct media_pad *pad = &video->pad;
959 struct video_device *vdev;
960 struct vb2_queue *q;
961 int ret;
962
963 vdev = &video->vdev;
964
965 mutex_init(&video->q_lock);
966
967 q = &video->vb2_q;
968 q->drv_priv = video;
969 q->mem_ops = &vb2_dma_sg_memops;
970 q->ops = &msm_video_vb2_q_ops;
971 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
972 q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
973 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
974 q->buf_struct_size = sizeof(struct camss_buffer);
975 q->dev = video->camss->dev;
976 q->lock = &video->q_lock;
977 ret = vb2_queue_init(q);
978 if (ret < 0) {
979 dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
980 goto error_vb2_init;
981 }
982
983 pad->flags = MEDIA_PAD_FL_SINK;
984 ret = media_entity_pads_init(&vdev->entity, 1, pad);
985 if (ret < 0) {
986 dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
987 ret);
988 goto error_vb2_init;
989 }
990
991 mutex_init(&video->lock);
992
993 if (video->camss->version == CAMSS_8x16) {
994 if (is_pix) {
995 video->formats = formats_pix_8x16;
996 video->nformats = ARRAY_SIZE(formats_pix_8x16);
997 } else {
998 video->formats = formats_rdi_8x16;
999 video->nformats = ARRAY_SIZE(formats_rdi_8x16);
1000 }
1001 } else if (video->camss->version == CAMSS_8x96 ||
1002 video->camss->version == CAMSS_660) {
1003 if (is_pix) {
1004 video->formats = formats_pix_8x96;
1005 video->nformats = ARRAY_SIZE(formats_pix_8x96);
1006 } else {
1007 video->formats = formats_rdi_8x96;
1008 video->nformats = ARRAY_SIZE(formats_rdi_8x96);
1009 }
1010 } else if (video->camss->version == CAMSS_845 ||
1011 video->camss->version == CAMSS_8250) {
1012 video->formats = formats_rdi_845;
1013 video->nformats = ARRAY_SIZE(formats_rdi_845);
1014 } else {
1015 ret = -EINVAL;
1016 goto error_video_register;
1017 }
1018
1019 ret = msm_video_init_format(video);
1020 if (ret < 0) {
1021 dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
1022 goto error_video_register;
1023 }
1024
1025 vdev->fops = &msm_vid_fops;
1026 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING
1027 | V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
1028 vdev->ioctl_ops = &msm_vid_ioctl_ops;
1029 vdev->release = msm_video_release;
1030 vdev->v4l2_dev = v4l2_dev;
1031 vdev->vfl_dir = VFL_DIR_RX;
1032 vdev->queue = &video->vb2_q;
1033 vdev->lock = &video->lock;
1034 strscpy(vdev->name, name, sizeof(vdev->name));
1035
1036 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1037 if (ret < 0) {
1038 dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
1039 ret);
1040 goto error_video_register;
1041 }
1042
1043 video_set_drvdata(vdev, video);
1044 atomic_inc(&video->camss->ref_count);
1045
1046 return 0;
1047
1048 error_video_register:
1049 media_entity_cleanup(&vdev->entity);
1050 mutex_destroy(&video->lock);
1051 error_vb2_init:
1052 mutex_destroy(&video->q_lock);
1053
1054 return ret;
1055 }
1056
msm_video_unregister(struct camss_video * video)1057 void msm_video_unregister(struct camss_video *video)
1058 {
1059 atomic_inc(&video->camss->ref_count);
1060 vb2_video_unregister_device(&video->vdev);
1061 atomic_dec(&video->camss->ref_count);
1062 }
1063