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_pad_remote_pad_first(&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 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
347 };
348 struct v4l2_subdev *subdev;
349 u32 pad;
350 int ret;
351
352 subdev = video_remote_subdev(video, &pad);
353 if (subdev == NULL)
354 return -EPIPE;
355
356 fmt.pad = pad;
357
358 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
359 if (ret)
360 return ret;
361
362 ret = video_find_format(fmt.format.code,
363 format->fmt.pix_mp.pixelformat,
364 video->formats, video->nformats);
365 if (ret < 0)
366 return ret;
367
368 format->type = video->type;
369
370 return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp,
371 &video->formats[ret], video->bpl_alignment);
372 }
373
374 /* -----------------------------------------------------------------------------
375 * Video queue operations
376 */
377
video_queue_setup(struct vb2_queue * q,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])378 static int video_queue_setup(struct vb2_queue *q,
379 unsigned int *num_buffers, unsigned int *num_planes,
380 unsigned int sizes[], struct device *alloc_devs[])
381 {
382 struct camss_video *video = vb2_get_drv_priv(q);
383 const struct v4l2_pix_format_mplane *format =
384 &video->active_fmt.fmt.pix_mp;
385 unsigned int i;
386
387 if (*num_planes) {
388 if (*num_planes != format->num_planes)
389 return -EINVAL;
390
391 for (i = 0; i < *num_planes; i++)
392 if (sizes[i] < format->plane_fmt[i].sizeimage)
393 return -EINVAL;
394
395 return 0;
396 }
397
398 *num_planes = format->num_planes;
399
400 for (i = 0; i < *num_planes; i++)
401 sizes[i] = format->plane_fmt[i].sizeimage;
402
403 return 0;
404 }
405
video_buf_init(struct vb2_buffer * vb)406 static int video_buf_init(struct vb2_buffer *vb)
407 {
408 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
409 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
410 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
411 vb);
412 const struct v4l2_pix_format_mplane *format =
413 &video->active_fmt.fmt.pix_mp;
414 struct sg_table *sgt;
415 unsigned int i;
416
417 for (i = 0; i < format->num_planes; i++) {
418 sgt = vb2_dma_sg_plane_desc(vb, i);
419 if (!sgt)
420 return -EFAULT;
421
422 buffer->addr[i] = sg_dma_address(sgt->sgl);
423 }
424
425 if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
426 format->pixelformat == V4L2_PIX_FMT_NV21 ||
427 format->pixelformat == V4L2_PIX_FMT_NV16 ||
428 format->pixelformat == V4L2_PIX_FMT_NV61)
429 buffer->addr[1] = buffer->addr[0] +
430 format->plane_fmt[0].bytesperline *
431 format->height;
432
433 return 0;
434 }
435
video_buf_prepare(struct vb2_buffer * vb)436 static int video_buf_prepare(struct vb2_buffer *vb)
437 {
438 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
439 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
440 const struct v4l2_pix_format_mplane *format =
441 &video->active_fmt.fmt.pix_mp;
442 unsigned int i;
443
444 for (i = 0; i < format->num_planes; i++) {
445 if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i))
446 return -EINVAL;
447
448 vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage);
449 }
450
451 vbuf->field = V4L2_FIELD_NONE;
452
453 return 0;
454 }
455
video_buf_queue(struct vb2_buffer * vb)456 static void video_buf_queue(struct vb2_buffer *vb)
457 {
458 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
459 struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
460 struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
461 vb);
462
463 video->ops->queue_buffer(video, buffer);
464 }
465
video_check_format(struct camss_video * video)466 static int video_check_format(struct camss_video *video)
467 {
468 struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
469 struct v4l2_format format;
470 struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
471 int ret;
472
473 sd_pix->pixelformat = pix->pixelformat;
474 ret = video_get_subdev_format(video, &format);
475 if (ret < 0)
476 return ret;
477
478 if (pix->pixelformat != sd_pix->pixelformat ||
479 pix->height != sd_pix->height ||
480 pix->width != sd_pix->width ||
481 pix->num_planes != sd_pix->num_planes ||
482 pix->field != format.fmt.pix_mp.field)
483 return -EPIPE;
484
485 return 0;
486 }
487
video_start_streaming(struct vb2_queue * q,unsigned int count)488 static int video_start_streaming(struct vb2_queue *q, unsigned int count)
489 {
490 struct camss_video *video = vb2_get_drv_priv(q);
491 struct video_device *vdev = &video->vdev;
492 struct media_entity *entity;
493 struct media_pad *pad;
494 struct v4l2_subdev *subdev;
495 int ret;
496
497 ret = video_device_pipeline_alloc_start(vdev);
498 if (ret < 0) {
499 dev_err(video->camss->dev, "Failed to start media pipeline: %d\n", ret);
500 goto flush_buffers;
501 }
502
503 ret = video_check_format(video);
504 if (ret < 0)
505 goto error;
506
507 entity = &vdev->entity;
508 while (1) {
509 pad = &entity->pads[0];
510 if (!(pad->flags & MEDIA_PAD_FL_SINK))
511 break;
512
513 pad = media_pad_remote_pad_first(pad);
514 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
515 break;
516
517 entity = pad->entity;
518 subdev = media_entity_to_v4l2_subdev(entity);
519
520 ret = v4l2_subdev_call(subdev, video, s_stream, 1);
521 if (ret < 0 && ret != -ENOIOCTLCMD)
522 goto error;
523 }
524
525 return 0;
526
527 error:
528 video_device_pipeline_stop(vdev);
529
530 flush_buffers:
531 video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
532
533 return ret;
534 }
535
video_stop_streaming(struct vb2_queue * q)536 static void video_stop_streaming(struct vb2_queue *q)
537 {
538 struct camss_video *video = vb2_get_drv_priv(q);
539 struct video_device *vdev = &video->vdev;
540 struct media_entity *entity;
541 struct media_pad *pad;
542 struct v4l2_subdev *subdev;
543 int ret;
544
545 entity = &vdev->entity;
546 while (1) {
547 pad = &entity->pads[0];
548 if (!(pad->flags & MEDIA_PAD_FL_SINK))
549 break;
550
551 pad = media_pad_remote_pad_first(pad);
552 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
553 break;
554
555 entity = pad->entity;
556 subdev = media_entity_to_v4l2_subdev(entity);
557
558 ret = v4l2_subdev_call(subdev, video, s_stream, 0);
559
560 if (entity->use_count > 1) {
561 /* Don't stop if other instances of the pipeline are still running */
562 dev_dbg(video->camss->dev, "Video pipeline still used, don't stop streaming.\n");
563 return;
564 }
565
566 if (ret) {
567 dev_err(video->camss->dev, "Video pipeline stop failed: %d\n", ret);
568 return;
569 }
570 }
571
572 video_device_pipeline_stop(vdev);
573
574 video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
575 }
576
577 static const struct vb2_ops msm_video_vb2_q_ops = {
578 .queue_setup = video_queue_setup,
579 .wait_prepare = vb2_ops_wait_prepare,
580 .wait_finish = vb2_ops_wait_finish,
581 .buf_init = video_buf_init,
582 .buf_prepare = video_buf_prepare,
583 .buf_queue = video_buf_queue,
584 .start_streaming = video_start_streaming,
585 .stop_streaming = video_stop_streaming,
586 };
587
588 /* -----------------------------------------------------------------------------
589 * V4L2 ioctls
590 */
591
video_querycap(struct file * file,void * fh,struct v4l2_capability * cap)592 static int video_querycap(struct file *file, void *fh,
593 struct v4l2_capability *cap)
594 {
595 strscpy(cap->driver, "qcom-camss", sizeof(cap->driver));
596 strscpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
597
598 return 0;
599 }
600
video_enum_fmt(struct file * file,void * fh,struct v4l2_fmtdesc * f)601 static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
602 {
603 struct camss_video *video = video_drvdata(file);
604 int i, j, k;
605 u32 mcode = f->mbus_code;
606
607 if (f->type != video->type)
608 return -EINVAL;
609
610 if (f->index >= video->nformats)
611 return -EINVAL;
612
613 /*
614 * Find index "i" of "k"th unique pixelformat in formats array.
615 *
616 * If f->mbus_code passed to video_enum_fmt() is not zero, a device
617 * with V4L2_CAP_IO_MC capability restricts enumeration to only the
618 * pixel formats that can be produced from that media bus code.
619 * This is implemented by skipping video->formats[] entries with
620 * code != f->mbus_code (if f->mbus_code is not zero).
621 * If the f->mbus_code passed to video_enum_fmt() is not supported,
622 * -EINVAL is returned.
623 * If f->mbus_code is zero, all the pixel formats are enumerated.
624 */
625 k = -1;
626 for (i = 0; i < video->nformats; i++) {
627 if (mcode != 0 && video->formats[i].code != mcode)
628 continue;
629
630 for (j = 0; j < i; j++) {
631 if (mcode != 0 && video->formats[j].code != mcode)
632 continue;
633 if (video->formats[i].pixelformat ==
634 video->formats[j].pixelformat)
635 break;
636 }
637
638 if (j == i)
639 k++;
640
641 if (k == f->index)
642 break;
643 }
644
645 if (k == -1 || k < f->index)
646 /*
647 * All the unique pixel formats matching the arguments
648 * have been enumerated (k >= 0 and f->index > 0), or
649 * no pixel formats match the non-zero f->mbus_code (k == -1).
650 */
651 return -EINVAL;
652
653 f->pixelformat = video->formats[i].pixelformat;
654
655 return 0;
656 }
657
video_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)658 static int video_enum_framesizes(struct file *file, void *fh,
659 struct v4l2_frmsizeenum *fsize)
660 {
661 struct camss_video *video = video_drvdata(file);
662 int i;
663
664 if (fsize->index)
665 return -EINVAL;
666
667 /* Only accept pixel format present in the formats[] table */
668 for (i = 0; i < video->nformats; i++) {
669 if (video->formats[i].pixelformat == fsize->pixel_format)
670 break;
671 }
672
673 if (i == video->nformats)
674 return -EINVAL;
675
676 fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
677 fsize->stepwise.min_width = CAMSS_FRAME_MIN_WIDTH;
678 fsize->stepwise.max_width = CAMSS_FRAME_MAX_WIDTH;
679 fsize->stepwise.min_height = CAMSS_FRAME_MIN_HEIGHT;
680 fsize->stepwise.max_height = (video->line_based) ?
681 CAMSS_FRAME_MAX_HEIGHT_PIX : CAMSS_FRAME_MAX_HEIGHT_RDI;
682 fsize->stepwise.step_width = 1;
683 fsize->stepwise.step_height = 1;
684
685 return 0;
686 }
687
video_g_fmt(struct file * file,void * fh,struct v4l2_format * f)688 static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
689 {
690 struct camss_video *video = video_drvdata(file);
691
692 *f = video->active_fmt;
693
694 return 0;
695 }
696
__video_try_fmt(struct camss_video * video,struct v4l2_format * f)697 static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
698 {
699 struct v4l2_pix_format_mplane *pix_mp;
700 const struct camss_format_info *fi;
701 struct v4l2_plane_pix_format *p;
702 u32 bytesperline[3] = { 0 };
703 u32 sizeimage[3] = { 0 };
704 u32 width, height;
705 u32 bpl, lines;
706 int i, j;
707
708 pix_mp = &f->fmt.pix_mp;
709
710 if (video->line_based)
711 for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
712 p = &pix_mp->plane_fmt[i];
713 bytesperline[i] = clamp_t(u32, p->bytesperline,
714 1, 65528);
715 sizeimage[i] = clamp_t(u32, p->sizeimage,
716 bytesperline[i],
717 bytesperline[i] * CAMSS_FRAME_MAX_HEIGHT_PIX);
718 }
719
720 for (j = 0; j < video->nformats; j++)
721 if (pix_mp->pixelformat == video->formats[j].pixelformat)
722 break;
723
724 if (j == video->nformats)
725 j = 0; /* default format */
726
727 fi = &video->formats[j];
728 width = pix_mp->width;
729 height = pix_mp->height;
730
731 memset(pix_mp, 0, sizeof(*pix_mp));
732
733 pix_mp->pixelformat = fi->pixelformat;
734 pix_mp->width = clamp_t(u32, width, 1, CAMSS_FRAME_MAX_WIDTH);
735 pix_mp->height = clamp_t(u32, height, 1, CAMSS_FRAME_MAX_HEIGHT_RDI);
736 pix_mp->num_planes = fi->planes;
737 for (i = 0; i < pix_mp->num_planes; i++) {
738 bpl = pix_mp->width / fi->hsub[i].numerator *
739 fi->hsub[i].denominator * fi->bpp[i] / 8;
740 bpl = ALIGN(bpl, video->bpl_alignment);
741 pix_mp->plane_fmt[i].bytesperline = bpl;
742 pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
743 fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
744 }
745
746 pix_mp->field = V4L2_FIELD_NONE;
747 pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
748 pix_mp->flags = 0;
749 pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
750 pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
751 pix_mp->colorspace, pix_mp->ycbcr_enc);
752 pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
753
754 if (video->line_based)
755 for (i = 0; i < pix_mp->num_planes; i++) {
756 p = &pix_mp->plane_fmt[i];
757 p->bytesperline = clamp_t(u32, p->bytesperline,
758 1, 65528);
759 p->sizeimage = clamp_t(u32, p->sizeimage,
760 p->bytesperline,
761 p->bytesperline * CAMSS_FRAME_MAX_HEIGHT_PIX);
762 lines = p->sizeimage / p->bytesperline;
763
764 if (p->bytesperline < bytesperline[i])
765 p->bytesperline = ALIGN(bytesperline[i], 8);
766
767 if (p->sizeimage < p->bytesperline * lines)
768 p->sizeimage = p->bytesperline * lines;
769
770 if (p->sizeimage < sizeimage[i])
771 p->sizeimage = sizeimage[i];
772 }
773
774 return 0;
775 }
776
video_try_fmt(struct file * file,void * fh,struct v4l2_format * f)777 static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
778 {
779 struct camss_video *video = video_drvdata(file);
780
781 return __video_try_fmt(video, f);
782 }
783
video_s_fmt(struct file * file,void * fh,struct v4l2_format * f)784 static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
785 {
786 struct camss_video *video = video_drvdata(file);
787 int ret;
788
789 if (vb2_is_busy(&video->vb2_q))
790 return -EBUSY;
791
792 ret = __video_try_fmt(video, f);
793 if (ret < 0)
794 return ret;
795
796 video->active_fmt = *f;
797
798 return 0;
799 }
800
video_enum_input(struct file * file,void * fh,struct v4l2_input * input)801 static int video_enum_input(struct file *file, void *fh,
802 struct v4l2_input *input)
803 {
804 if (input->index > 0)
805 return -EINVAL;
806
807 strscpy(input->name, "camera", sizeof(input->name));
808 input->type = V4L2_INPUT_TYPE_CAMERA;
809
810 return 0;
811 }
812
video_g_input(struct file * file,void * fh,unsigned int * input)813 static int video_g_input(struct file *file, void *fh, unsigned int *input)
814 {
815 *input = 0;
816
817 return 0;
818 }
819
video_s_input(struct file * file,void * fh,unsigned int input)820 static int video_s_input(struct file *file, void *fh, unsigned int input)
821 {
822 return input == 0 ? 0 : -EINVAL;
823 }
824
825 static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
826 .vidioc_querycap = video_querycap,
827 .vidioc_enum_fmt_vid_cap = video_enum_fmt,
828 .vidioc_enum_framesizes = video_enum_framesizes,
829 .vidioc_g_fmt_vid_cap_mplane = video_g_fmt,
830 .vidioc_s_fmt_vid_cap_mplane = video_s_fmt,
831 .vidioc_try_fmt_vid_cap_mplane = video_try_fmt,
832 .vidioc_reqbufs = vb2_ioctl_reqbufs,
833 .vidioc_querybuf = vb2_ioctl_querybuf,
834 .vidioc_qbuf = vb2_ioctl_qbuf,
835 .vidioc_expbuf = vb2_ioctl_expbuf,
836 .vidioc_dqbuf = vb2_ioctl_dqbuf,
837 .vidioc_create_bufs = vb2_ioctl_create_bufs,
838 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
839 .vidioc_streamon = vb2_ioctl_streamon,
840 .vidioc_streamoff = vb2_ioctl_streamoff,
841 .vidioc_enum_input = video_enum_input,
842 .vidioc_g_input = video_g_input,
843 .vidioc_s_input = video_s_input,
844 };
845
846 /* -----------------------------------------------------------------------------
847 * V4L2 file operations
848 */
849
video_open(struct file * file)850 static int video_open(struct file *file)
851 {
852 struct video_device *vdev = video_devdata(file);
853 struct camss_video *video = video_drvdata(file);
854 struct v4l2_fh *vfh;
855 int ret;
856
857 mutex_lock(&video->lock);
858
859 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
860 if (vfh == NULL) {
861 ret = -ENOMEM;
862 goto error_alloc;
863 }
864
865 v4l2_fh_init(vfh, vdev);
866 v4l2_fh_add(vfh);
867
868 file->private_data = vfh;
869
870 ret = v4l2_pipeline_pm_get(&vdev->entity);
871 if (ret < 0) {
872 dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
873 ret);
874 goto error_pm_use;
875 }
876
877 mutex_unlock(&video->lock);
878
879 return 0;
880
881 error_pm_use:
882 v4l2_fh_release(file);
883
884 error_alloc:
885 mutex_unlock(&video->lock);
886
887 return ret;
888 }
889
video_release(struct file * file)890 static int video_release(struct file *file)
891 {
892 struct video_device *vdev = video_devdata(file);
893
894 vb2_fop_release(file);
895
896 v4l2_pipeline_pm_put(&vdev->entity);
897
898 file->private_data = NULL;
899
900 return 0;
901 }
902
903 static const struct v4l2_file_operations msm_vid_fops = {
904 .owner = THIS_MODULE,
905 .unlocked_ioctl = video_ioctl2,
906 .open = video_open,
907 .release = video_release,
908 .poll = vb2_fop_poll,
909 .mmap = vb2_fop_mmap,
910 .read = vb2_fop_read,
911 };
912
913 /* -----------------------------------------------------------------------------
914 * CAMSS video core
915 */
916
msm_video_release(struct video_device * vdev)917 static void msm_video_release(struct video_device *vdev)
918 {
919 struct camss_video *video = video_get_drvdata(vdev);
920
921 media_entity_cleanup(&vdev->entity);
922
923 mutex_destroy(&video->q_lock);
924 mutex_destroy(&video->lock);
925
926 if (atomic_dec_and_test(&video->camss->ref_count))
927 camss_delete(video->camss);
928 }
929
930 /*
931 * msm_video_init_format - Helper function to initialize format
932 * @video: struct camss_video
933 *
934 * Initialize pad format with default value.
935 *
936 * Return 0 on success or a negative error code otherwise
937 */
msm_video_init_format(struct camss_video * video)938 static int msm_video_init_format(struct camss_video *video)
939 {
940 int ret;
941 struct v4l2_format format = {
942 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
943 .fmt.pix_mp = {
944 .width = 1920,
945 .height = 1080,
946 .pixelformat = video->formats[0].pixelformat,
947 },
948 };
949
950 ret = __video_try_fmt(video, &format);
951 if (ret < 0)
952 return ret;
953
954 video->active_fmt = format;
955
956 return 0;
957 }
958
959 /*
960 * msm_video_register - Register a video device node
961 * @video: struct camss_video
962 * @v4l2_dev: V4L2 device
963 * @name: name to be used for the video device node
964 *
965 * Initialize and register a video device node to a V4L2 device. Also
966 * initialize the vb2 queue.
967 *
968 * Return 0 on success or a negative error code otherwise
969 */
970
msm_video_register(struct camss_video * video,struct v4l2_device * v4l2_dev,const char * name,int is_pix)971 int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
972 const char *name, int is_pix)
973 {
974 struct media_pad *pad = &video->pad;
975 struct video_device *vdev;
976 struct vb2_queue *q;
977 int ret;
978
979 vdev = &video->vdev;
980
981 mutex_init(&video->q_lock);
982
983 q = &video->vb2_q;
984 q->drv_priv = video;
985 q->mem_ops = &vb2_dma_sg_memops;
986 q->ops = &msm_video_vb2_q_ops;
987 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
988 q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
989 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
990 q->buf_struct_size = sizeof(struct camss_buffer);
991 q->dev = video->camss->dev;
992 q->lock = &video->q_lock;
993 ret = vb2_queue_init(q);
994 if (ret < 0) {
995 dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
996 goto error_vb2_init;
997 }
998
999 pad->flags = MEDIA_PAD_FL_SINK;
1000 ret = media_entity_pads_init(&vdev->entity, 1, pad);
1001 if (ret < 0) {
1002 dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
1003 ret);
1004 goto error_vb2_init;
1005 }
1006
1007 mutex_init(&video->lock);
1008
1009 if (video->camss->version == CAMSS_8x16) {
1010 if (is_pix) {
1011 video->formats = formats_pix_8x16;
1012 video->nformats = ARRAY_SIZE(formats_pix_8x16);
1013 } else {
1014 video->formats = formats_rdi_8x16;
1015 video->nformats = ARRAY_SIZE(formats_rdi_8x16);
1016 }
1017 } else if (video->camss->version == CAMSS_8x96 ||
1018 video->camss->version == CAMSS_660) {
1019 if (is_pix) {
1020 video->formats = formats_pix_8x96;
1021 video->nformats = ARRAY_SIZE(formats_pix_8x96);
1022 } else {
1023 video->formats = formats_rdi_8x96;
1024 video->nformats = ARRAY_SIZE(formats_rdi_8x96);
1025 }
1026 } else if (video->camss->version == CAMSS_845 ||
1027 video->camss->version == CAMSS_8250) {
1028 video->formats = formats_rdi_845;
1029 video->nformats = ARRAY_SIZE(formats_rdi_845);
1030 } else {
1031 ret = -EINVAL;
1032 goto error_video_register;
1033 }
1034
1035 ret = msm_video_init_format(video);
1036 if (ret < 0) {
1037 dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
1038 goto error_video_register;
1039 }
1040
1041 vdev->fops = &msm_vid_fops;
1042 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING
1043 | V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
1044 vdev->ioctl_ops = &msm_vid_ioctl_ops;
1045 vdev->release = msm_video_release;
1046 vdev->v4l2_dev = v4l2_dev;
1047 vdev->vfl_dir = VFL_DIR_RX;
1048 vdev->queue = &video->vb2_q;
1049 vdev->lock = &video->lock;
1050 strscpy(vdev->name, name, sizeof(vdev->name));
1051
1052 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1053 if (ret < 0) {
1054 dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
1055 ret);
1056 goto error_video_register;
1057 }
1058
1059 video_set_drvdata(vdev, video);
1060 atomic_inc(&video->camss->ref_count);
1061
1062 return 0;
1063
1064 error_video_register:
1065 media_entity_cleanup(&vdev->entity);
1066 mutex_destroy(&video->lock);
1067 error_vb2_init:
1068 mutex_destroy(&video->q_lock);
1069
1070 return ret;
1071 }
1072
msm_video_unregister(struct camss_video * video)1073 void msm_video_unregister(struct camss_video *video)
1074 {
1075 atomic_inc(&video->camss->ref_count);
1076 vb2_video_unregister_device(&video->vdev);
1077 atomic_dec(&video->camss->ref_count);
1078 }
1079