1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* 2 /*
3 * Media Bus API header 3 * Media Bus API header
4 * 4 *
5 * Copyright (C) 2009, Guennadi Liakhovetski < 5 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
6 */ 6 */
7 7
8 #ifndef V4L2_MEDIABUS_H 8 #ifndef V4L2_MEDIABUS_H
9 #define V4L2_MEDIABUS_H 9 #define V4L2_MEDIABUS_H
10 10
11 #include <linux/v4l2-mediabus.h> 11 #include <linux/v4l2-mediabus.h>
12 #include <linux/bitops.h> 12 #include <linux/bitops.h>
13 13
14 /* 14 /*
15 * How to use the V4L2_MBUS_* flags: 15 * How to use the V4L2_MBUS_* flags:
16 * Flags are defined for each of the possible 16 * Flags are defined for each of the possible states and values of a media
17 * bus configuration parameter. One and only o 17 * bus configuration parameter. One and only one bit of each group of flags
18 * shall be set by the users of the v4l2_subde 18 * shall be set by the users of the v4l2_subdev_pad_ops.get_mbus_config
19 * operation to ensure that no conflicting set 19 * operation to ensure that no conflicting settings are specified when
20 * reporting the media bus configuration. For 20 * reporting the media bus configuration. For example, it is invalid to set or
21 * clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH 21 * clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH and the
22 * V4L2_MBUS_HSYNC_ACTIVE_LOW flag at the same 22 * V4L2_MBUS_HSYNC_ACTIVE_LOW flag at the same time. Instead either flag
23 * V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MB 23 * V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MBUS_HSYNC_ACTIVE_LOW shall be set.
24 * 24 *
25 * TODO: replace the existing V4L2_MBUS_* flag 25 * TODO: replace the existing V4L2_MBUS_* flags with structures of fields
26 * to avoid conflicting settings. 26 * to avoid conflicting settings.
27 * 27 *
28 * In example: 28 * In example:
29 * #define V4L2_MBUS_HSYNC_ACTIVE_HIGH 29 * #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
30 * #define V4L2_MBUS_HSYNC_ACTIVE_LOW 30 * #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
31 * will be replaced by a field whose value rep 31 * will be replaced by a field whose value reports the intended active state of
32 * the signal: 32 * the signal:
33 * unsigned int v4l2_mbus_hsync_active : 1 33 * unsigned int v4l2_mbus_hsync_active : 1;
34 */ 34 */
35 35
36 /* Parallel flags */ 36 /* Parallel flags */
37 /* 37 /*
38 * The client runs in master or in slave mode. 38 * The client runs in master or in slave mode. By "Master mode" an operation
39 * mode is meant, when the client (e.g., a cam 39 * mode is meant, when the client (e.g., a camera sensor) is producing
40 * horizontal and vertical synchronisation. In 40 * horizontal and vertical synchronisation. In "Slave mode" the host is
41 * providing these signals to the slave. 41 * providing these signals to the slave.
42 */ 42 */
43 #define V4L2_MBUS_MASTER 43 #define V4L2_MBUS_MASTER BIT(0)
44 #define V4L2_MBUS_SLAVE 44 #define V4L2_MBUS_SLAVE BIT(1)
45 /* 45 /*
46 * Signal polarity flags 46 * Signal polarity flags
47 * Note: in BT.656 mode HSYNC, FIELD, and VSYN 47 * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
48 * V4L2_MBUS_[HV]SYNC* flags should be also us 48 * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
49 * configuration of hardware that uses [HV]REF 49 * configuration of hardware that uses [HV]REF signals
50 */ 50 */
51 #define V4L2_MBUS_HSYNC_ACTIVE_HIGH 51 #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
52 #define V4L2_MBUS_HSYNC_ACTIVE_LOW 52 #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
53 #define V4L2_MBUS_VSYNC_ACTIVE_HIGH 53 #define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4)
54 #define V4L2_MBUS_VSYNC_ACTIVE_LOW 54 #define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5)
55 #define V4L2_MBUS_PCLK_SAMPLE_RISING 55 #define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6)
56 #define V4L2_MBUS_PCLK_SAMPLE_FALLING 56 #define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7)
57 #define V4L2_MBUS_PCLK_SAMPLE_DUALEDGE !! 57 #define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8)
58 #define V4L2_MBUS_DATA_ACTIVE_HIGH !! 58 #define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9)
59 #define V4L2_MBUS_DATA_ACTIVE_LOW <<
60 /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */ 59 /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
61 #define V4L2_MBUS_FIELD_EVEN_HIGH !! 60 #define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10)
62 /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */ 61 /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
63 #define V4L2_MBUS_FIELD_EVEN_LOW !! 62 #define V4L2_MBUS_FIELD_EVEN_LOW BIT(11)
64 /* Active state of Sync-on-green (SoG) signal, 63 /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
65 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH !! 64 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12)
66 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW !! 65 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13)
67 #define V4L2_MBUS_DATA_ENABLE_HIGH !! 66 #define V4L2_MBUS_DATA_ENABLE_HIGH BIT(14)
68 #define V4L2_MBUS_DATA_ENABLE_LOW !! 67 #define V4L2_MBUS_DATA_ENABLE_LOW BIT(15)
69 68
70 /* Serial flags */ 69 /* Serial flags */
71 /* Clock non-continuous mode support. */ 70 /* Clock non-continuous mode support. */
72 #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK 71 #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(0)
73 72
74 #define V4L2_MBUS_CSI2_MAX_DATA_LANES 73 #define V4L2_MBUS_CSI2_MAX_DATA_LANES 8
75 74
76 /** 75 /**
77 * struct v4l2_mbus_config_mipi_csi2 - MIPI CS 76 * struct v4l2_mbus_config_mipi_csi2 - MIPI CSI-2 data bus configuration
78 * @flags: media bus (V4L2_MBUS_*) flags 77 * @flags: media bus (V4L2_MBUS_*) flags
79 * @data_lanes: an array of physical data lane 78 * @data_lanes: an array of physical data lane indexes
80 * @clock_lane: physical lane index of the clo 79 * @clock_lane: physical lane index of the clock lane
81 * @num_data_lanes: number of data lanes 80 * @num_data_lanes: number of data lanes
82 * @lane_polarities: polarity of the lanes. Th 81 * @lane_polarities: polarity of the lanes. The order is the same of
83 * the physical lanes. 82 * the physical lanes.
84 */ 83 */
85 struct v4l2_mbus_config_mipi_csi2 { 84 struct v4l2_mbus_config_mipi_csi2 {
86 unsigned int flags; 85 unsigned int flags;
87 unsigned char data_lanes[V4L2_MBUS_CSI 86 unsigned char data_lanes[V4L2_MBUS_CSI2_MAX_DATA_LANES];
88 unsigned char clock_lane; 87 unsigned char clock_lane;
89 unsigned char num_data_lanes; 88 unsigned char num_data_lanes;
90 bool lane_polarities[1 + V4L2_MBUS_CSI 89 bool lane_polarities[1 + V4L2_MBUS_CSI2_MAX_DATA_LANES];
91 }; 90 };
92 91
93 /** 92 /**
94 * struct v4l2_mbus_config_parallel - parallel 93 * struct v4l2_mbus_config_parallel - parallel data bus configuration
95 * @flags: media bus (V4L2_MBUS_*) flags 94 * @flags: media bus (V4L2_MBUS_*) flags
96 * @bus_width: bus width in bits 95 * @bus_width: bus width in bits
97 * @data_shift: data shift in bits 96 * @data_shift: data shift in bits
98 */ 97 */
99 struct v4l2_mbus_config_parallel { 98 struct v4l2_mbus_config_parallel {
100 unsigned int flags; 99 unsigned int flags;
101 unsigned char bus_width; 100 unsigned char bus_width;
102 unsigned char data_shift; 101 unsigned char data_shift;
103 }; 102 };
104 103
105 /** 104 /**
106 * struct v4l2_mbus_config_mipi_csi1 - CSI-1/C 105 * struct v4l2_mbus_config_mipi_csi1 - CSI-1/CCP2 data bus configuration
107 * @clock_inv: polarity of clock/strobe signal 106 * @clock_inv: polarity of clock/strobe signal
108 * false - not inverted, true - in 107 * false - not inverted, true - inverted
109 * @strobe: false - data/clock, true - data/st 108 * @strobe: false - data/clock, true - data/strobe
110 * @lane_polarity: the polarities of the clock 109 * @lane_polarity: the polarities of the clock (index 0) and data lanes
111 * index (1) 110 * index (1)
112 * @data_lane: the number of the data lane 111 * @data_lane: the number of the data lane
113 * @clock_lane: the number of the clock lane 112 * @clock_lane: the number of the clock lane
114 */ 113 */
115 struct v4l2_mbus_config_mipi_csi1 { 114 struct v4l2_mbus_config_mipi_csi1 {
116 unsigned char clock_inv:1; 115 unsigned char clock_inv:1;
117 unsigned char strobe:1; 116 unsigned char strobe:1;
118 bool lane_polarity[2]; 117 bool lane_polarity[2];
119 unsigned char data_lane; 118 unsigned char data_lane;
120 unsigned char clock_lane; 119 unsigned char clock_lane;
121 }; 120 };
122 121
123 /** 122 /**
124 * enum v4l2_mbus_type - media bus type 123 * enum v4l2_mbus_type - media bus type
125 * @V4L2_MBUS_UNKNOWN: unknown bus type, no V 124 * @V4L2_MBUS_UNKNOWN: unknown bus type, no V4L2 mediabus configuration
126 * @V4L2_MBUS_PARALLEL: parallel interface wit 125 * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
127 * @V4L2_MBUS_BT656: parallel interface wit 126 * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
128 * also be used for BT.11 127 * also be used for BT.1120
129 * @V4L2_MBUS_CSI1: MIPI CSI-1 serial inte 128 * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface
130 * @V4L2_MBUS_CCP2: CCP2 (Compact Camera P 129 * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2)
131 * @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial int 130 * @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial interface, with D-PHY
132 * @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial int 131 * @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial interface, with C-PHY
133 * @V4L2_MBUS_DPI: MIPI VIDEO DPI interfa 132 * @V4L2_MBUS_DPI: MIPI VIDEO DPI interface
134 * @V4L2_MBUS_INVALID: invalid bus type (keep 133 * @V4L2_MBUS_INVALID: invalid bus type (keep as last)
135 */ 134 */
136 enum v4l2_mbus_type { 135 enum v4l2_mbus_type {
137 V4L2_MBUS_UNKNOWN, 136 V4L2_MBUS_UNKNOWN,
138 V4L2_MBUS_PARALLEL, 137 V4L2_MBUS_PARALLEL,
139 V4L2_MBUS_BT656, 138 V4L2_MBUS_BT656,
140 V4L2_MBUS_CSI1, 139 V4L2_MBUS_CSI1,
141 V4L2_MBUS_CCP2, 140 V4L2_MBUS_CCP2,
142 V4L2_MBUS_CSI2_DPHY, 141 V4L2_MBUS_CSI2_DPHY,
143 V4L2_MBUS_CSI2_CPHY, 142 V4L2_MBUS_CSI2_CPHY,
144 V4L2_MBUS_DPI, 143 V4L2_MBUS_DPI,
145 V4L2_MBUS_INVALID, 144 V4L2_MBUS_INVALID,
146 }; 145 };
147 146
148 /** 147 /**
149 * struct v4l2_mbus_config - media bus configu 148 * struct v4l2_mbus_config - media bus configuration
150 * @type: interface type 149 * @type: interface type
151 * @bus: bus configuration data structure 150 * @bus: bus configuration data structure
152 * @bus.parallel: embedded &struct v4l2_mbus_c 151 * @bus.parallel: embedded &struct v4l2_mbus_config_parallel.
153 * Used if the bus is parallel 152 * Used if the bus is parallel or BT.656.
154 * @bus.mipi_csi1: embedded &struct v4l2_mbus_ 153 * @bus.mipi_csi1: embedded &struct v4l2_mbus_config_mipi_csi1.
155 * Used if the bus is MIPI All 154 * Used if the bus is MIPI Alliance's Camera Serial
156 * Interface version 1 (MIPI C 155 * Interface version 1 (MIPI CSI1) or Standard
157 * Mobile Imaging Architecture 156 * Mobile Imaging Architecture's Compact Camera Port 2
158 * (SMIA CCP2). 157 * (SMIA CCP2).
159 * @bus.mipi_csi2: embedded &struct v4l2_mbus_ 158 * @bus.mipi_csi2: embedded &struct v4l2_mbus_config_mipi_csi2.
160 * Used if the bus is MIPI All 159 * Used if the bus is MIPI Alliance's Camera Serial
161 * Interface version 2 (MIPI C 160 * Interface version 2 (MIPI CSI2).
162 */ 161 */
163 struct v4l2_mbus_config { 162 struct v4l2_mbus_config {
164 enum v4l2_mbus_type type; 163 enum v4l2_mbus_type type;
165 union { 164 union {
166 struct v4l2_mbus_config_parall 165 struct v4l2_mbus_config_parallel parallel;
167 struct v4l2_mbus_config_mipi_c 166 struct v4l2_mbus_config_mipi_csi1 mipi_csi1;
168 struct v4l2_mbus_config_mipi_c 167 struct v4l2_mbus_config_mipi_csi2 mipi_csi2;
169 } bus; 168 } bus;
170 }; 169 };
171 170
172 /** 171 /**
173 * v4l2_fill_pix_format - Ancillary routine th 172 * v4l2_fill_pix_format - Ancillary routine that fills a &struct
174 * v4l2_pix_format fields from a &struct 173 * v4l2_pix_format fields from a &struct v4l2_mbus_framefmt.
175 * 174 *
176 * @pix_fmt: pointer to &struct v4l2_pix_fo 175 * @pix_fmt: pointer to &struct v4l2_pix_format to be filled
177 * @mbus_fmt: pointer to &struct v4l2_mbus_f 176 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
178 */ 177 */
179 static inline void 178 static inline void
180 v4l2_fill_pix_format(struct v4l2_pix_format *p 179 v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
181 const struct v4l2_mbus_fr 180 const struct v4l2_mbus_framefmt *mbus_fmt)
182 { 181 {
183 pix_fmt->width = mbus_fmt->width; 182 pix_fmt->width = mbus_fmt->width;
184 pix_fmt->height = mbus_fmt->height; 183 pix_fmt->height = mbus_fmt->height;
185 pix_fmt->field = mbus_fmt->field; 184 pix_fmt->field = mbus_fmt->field;
186 pix_fmt->colorspace = mbus_fmt->colors 185 pix_fmt->colorspace = mbus_fmt->colorspace;
187 pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_e 186 pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
188 pix_fmt->quantization = mbus_fmt->quan 187 pix_fmt->quantization = mbus_fmt->quantization;
189 pix_fmt->xfer_func = mbus_fmt->xfer_fu 188 pix_fmt->xfer_func = mbus_fmt->xfer_func;
190 } 189 }
191 190
192 /** 191 /**
193 * v4l2_fill_mbus_format - Ancillary routine t 192 * v4l2_fill_mbus_format - Ancillary routine that fills a &struct
194 * v4l2_mbus_framefmt from a &struct v4l2 193 * v4l2_mbus_framefmt from a &struct v4l2_pix_format and a
195 * data format code. 194 * data format code.
196 * 195 *
197 * @mbus_fmt: pointer to &struct v4l2_mbus_f 196 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
198 * @pix_fmt: pointer to &struct v4l2_pix_fo 197 * @pix_fmt: pointer to &struct v4l2_pix_format to be used as model
199 * @code: data format code (from &enum v 198 * @code: data format code (from &enum v4l2_mbus_pixelcode)
200 */ 199 */
201 static inline void v4l2_fill_mbus_format(struc 200 static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
202 const 201 const struct v4l2_pix_format *pix_fmt,
203 u32 code) 202 u32 code)
204 { 203 {
205 mbus_fmt->width = pix_fmt->width; 204 mbus_fmt->width = pix_fmt->width;
206 mbus_fmt->height = pix_fmt->height; 205 mbus_fmt->height = pix_fmt->height;
207 mbus_fmt->field = pix_fmt->field; 206 mbus_fmt->field = pix_fmt->field;
208 mbus_fmt->colorspace = pix_fmt->colors 207 mbus_fmt->colorspace = pix_fmt->colorspace;
209 mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_e 208 mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc;
210 mbus_fmt->quantization = pix_fmt->quan 209 mbus_fmt->quantization = pix_fmt->quantization;
211 mbus_fmt->xfer_func = pix_fmt->xfer_fu 210 mbus_fmt->xfer_func = pix_fmt->xfer_func;
212 mbus_fmt->code = code; 211 mbus_fmt->code = code;
213 } 212 }
214 213
215 /** 214 /**
216 * v4l2_fill_pix_format_mplane - Ancillary rou 215 * v4l2_fill_pix_format_mplane - Ancillary routine that fills a &struct
217 * v4l2_pix_format_mplane fields from a m 216 * v4l2_pix_format_mplane fields from a media bus structure.
218 * 217 *
219 * @pix_mp_fmt: pointer to &struct v4l2_pix_fo 218 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled
220 * @mbus_fmt: pointer to &struct v4l2_mbus_f 219 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
221 */ 220 */
222 static inline void 221 static inline void
223 v4l2_fill_pix_format_mplane(struct v4l2_pix_fo 222 v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt,
224 const struct v4l2_ 223 const struct v4l2_mbus_framefmt *mbus_fmt)
225 { 224 {
226 pix_mp_fmt->width = mbus_fmt->width; 225 pix_mp_fmt->width = mbus_fmt->width;
227 pix_mp_fmt->height = mbus_fmt->height; 226 pix_mp_fmt->height = mbus_fmt->height;
228 pix_mp_fmt->field = mbus_fmt->field; 227 pix_mp_fmt->field = mbus_fmt->field;
229 pix_mp_fmt->colorspace = mbus_fmt->col 228 pix_mp_fmt->colorspace = mbus_fmt->colorspace;
230 pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbc 229 pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
231 pix_mp_fmt->quantization = mbus_fmt->q 230 pix_mp_fmt->quantization = mbus_fmt->quantization;
232 pix_mp_fmt->xfer_func = mbus_fmt->xfer 231 pix_mp_fmt->xfer_func = mbus_fmt->xfer_func;
233 } 232 }
234 233
235 /** 234 /**
236 * v4l2_fill_mbus_format_mplane - Ancillary ro 235 * v4l2_fill_mbus_format_mplane - Ancillary routine that fills a &struct
237 * v4l2_mbus_framefmt from a &struct v4l2 236 * v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane.
238 * 237 *
239 * @mbus_fmt: pointer to &struct v4l2_mbus_f 238 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
240 * @pix_mp_fmt: pointer to &struct v4l2_pix_fo 239 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model
241 */ 240 */
242 static inline void 241 static inline void
243 v4l2_fill_mbus_format_mplane(struct v4l2_mbus_ 242 v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt,
244 const struct v4l2 243 const struct v4l2_pix_format_mplane *pix_mp_fmt)
245 { 244 {
246 mbus_fmt->width = pix_mp_fmt->width; 245 mbus_fmt->width = pix_mp_fmt->width;
247 mbus_fmt->height = pix_mp_fmt->height; 246 mbus_fmt->height = pix_mp_fmt->height;
248 mbus_fmt->field = pix_mp_fmt->field; 247 mbus_fmt->field = pix_mp_fmt->field;
249 mbus_fmt->colorspace = pix_mp_fmt->col 248 mbus_fmt->colorspace = pix_mp_fmt->colorspace;
250 mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbc 249 mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc;
251 mbus_fmt->quantization = pix_mp_fmt->q 250 mbus_fmt->quantization = pix_mp_fmt->quantization;
252 mbus_fmt->xfer_func = pix_mp_fmt->xfer 251 mbus_fmt->xfer_func = pix_mp_fmt->xfer_func;
253 } 252 }
254 253
255 #endif 254 #endif
256 255
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