1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
4 *
5 * Benoit Parrot <bparrot@ti.com>
6 * Lad, Prabhakar <prabhakar.csengg@gmail.com>
7 */
8
9 #ifndef AM437X_VPFE_H
10 #define AM437X_VPFE_H
11
12 #include <linux/am437x-vpfe.h>
13 #include <linux/clk.h>
14 #include <linux/completion.h>
15 #include <linux/device.h>
16 #include <linux/io.h>
17 #include <linux/i2c.h>
18 #include <linux/videodev2.h>
19
20 #include <media/v4l2-dev.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/videobuf2-v4l2.h>
24 #include <media/videobuf2-dma-contig.h>
25
26 #include "am437x-vpfe_regs.h"
27
28 enum vpfe_pin_pol {
29 VPFE_PINPOL_POSITIVE = 0,
30 VPFE_PINPOL_NEGATIVE,
31 };
32
33 enum vpfe_hw_if_type {
34 /* Raw Bayer */
35 VPFE_RAW_BAYER = 0,
36 /* BT656 - 8 bit */
37 VPFE_BT656,
38 /* BT656 - 10 bit */
39 VPFE_BT656_10BIT,
40 /* YCbCr - 8 bit with external sync */
41 VPFE_YCBCR_SYNC_8,
42 /* YCbCr - 16 bit with external sync */
43 VPFE_YCBCR_SYNC_16,
44 };
45
46 /* interface description */
47 struct vpfe_hw_if_param {
48 enum vpfe_hw_if_type if_type;
49 enum vpfe_pin_pol hdpol;
50 enum vpfe_pin_pol vdpol;
51 unsigned int bus_width;
52 };
53
54 #define VPFE_MAX_SUBDEV 1
55 #define VPFE_MAX_INPUTS 1
56
57 struct vpfe_std_info {
58 int active_pixels;
59 int active_lines;
60 /* current frame format */
61 int frame_format;
62 };
63
64 struct vpfe_route {
65 u32 input;
66 u32 output;
67 };
68
69 struct vpfe_subdev_info {
70 /* Sub device group id */
71 int grp_id;
72 /* inputs available at the sub device */
73 struct v4l2_input inputs[VPFE_MAX_INPUTS];
74 /* Sub dev routing information for each input */
75 struct vpfe_route *routes;
76 /* check if sub dev supports routing */
77 int can_route;
78 /* ccdc bus/interface configuration */
79 struct vpfe_hw_if_param vpfe_param;
80 struct v4l2_subdev *sd;
81 };
82
83 struct vpfe_config {
84 /* information about each subdev */
85 struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
86 /* Flat array, arranged in groups */
87 struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
88 };
89
90 struct vpfe_cap_buffer {
91 struct vb2_v4l2_buffer vb;
92 struct list_head list;
93 };
94
95 enum ccdc_pixfmt {
96 CCDC_PIXFMT_RAW = 0,
97 CCDC_PIXFMT_YCBCR_16BIT,
98 CCDC_PIXFMT_YCBCR_8BIT,
99 };
100
101 enum ccdc_frmfmt {
102 CCDC_FRMFMT_PROGRESSIVE = 0,
103 CCDC_FRMFMT_INTERLACED,
104 };
105
106 /* PIXEL ORDER IN MEMORY from LSB to MSB */
107 /* only applicable for 8-bit input mode */
108 enum ccdc_pixorder {
109 CCDC_PIXORDER_YCBYCR,
110 CCDC_PIXORDER_CBYCRY,
111 };
112
113 enum ccdc_buftype {
114 CCDC_BUFTYPE_FLD_INTERLEAVED,
115 CCDC_BUFTYPE_FLD_SEPARATED
116 };
117
118
119 /* returns the highest bit used for the gamma */
ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)120 static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)
121 {
122 return 15 - width;
123 }
124
125 /* returns the highest bit used for this data size */
ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)126 static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)
127 {
128 return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz;
129 }
130
131 /* Structure for CCDC configuration parameters for raw capture mode */
132 struct ccdc_params_raw {
133 /* pixel format */
134 enum ccdc_pixfmt pix_fmt;
135 /* progressive or interlaced frame */
136 enum ccdc_frmfmt frm_fmt;
137 struct v4l2_rect win;
138 /* Current Format Bytes Per Pixels */
139 unsigned int bytesperpixel;
140 /* Current Format Bytes per Lines
141 * (Aligned to 32 bytes) used for HORZ_INFO
142 */
143 unsigned int bytesperline;
144 /* field id polarity */
145 enum vpfe_pin_pol fid_pol;
146 /* vertical sync polarity */
147 enum vpfe_pin_pol vd_pol;
148 /* horizontal sync polarity */
149 enum vpfe_pin_pol hd_pol;
150 /* interleaved or separated fields */
151 enum ccdc_buftype buf_type;
152 /*
153 * enable to store the image in inverse
154 * order in memory(bottom to top)
155 */
156 unsigned char image_invert_enable;
157 /* configurable parameters */
158 struct vpfe_ccdc_config_params_raw config_params;
159 };
160
161 struct ccdc_params_ycbcr {
162 /* pixel format */
163 enum ccdc_pixfmt pix_fmt;
164 /* progressive or interlaced frame */
165 enum ccdc_frmfmt frm_fmt;
166 struct v4l2_rect win;
167 /* Current Format Bytes Per Pixels */
168 unsigned int bytesperpixel;
169 /* Current Format Bytes per Lines
170 * (Aligned to 32 bytes) used for HORZ_INFO
171 */
172 unsigned int bytesperline;
173 /* field id polarity */
174 enum vpfe_pin_pol fid_pol;
175 /* vertical sync polarity */
176 enum vpfe_pin_pol vd_pol;
177 /* horizontal sync polarity */
178 enum vpfe_pin_pol hd_pol;
179 /* enable BT.656 embedded sync mode */
180 int bt656_enable;
181 /* cb:y:cr:y or y:cb:y:cr in memory */
182 enum ccdc_pixorder pix_order;
183 /* interleaved or separated fields */
184 enum ccdc_buftype buf_type;
185 };
186
187 /*
188 * CCDC operational configuration
189 */
190 struct ccdc_config {
191 /* CCDC interface type */
192 enum vpfe_hw_if_type if_type;
193 /* Raw Bayer configuration */
194 struct ccdc_params_raw bayer;
195 /* YCbCr configuration */
196 struct ccdc_params_ycbcr ycbcr;
197 /* ccdc base address */
198 void __iomem *base_addr;
199 };
200
201 struct vpfe_ccdc {
202 struct ccdc_config ccdc_cfg;
203 u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
204 };
205
206 /*
207 * struct vpfe_fmt - VPFE media bus format information
208 * fourcc: V4L2 pixel format code
209 * code: V4L2 media bus format code
210 * bitsperpixel: Bits per pixel over the bus
211 */
212 struct vpfe_fmt {
213 u32 fourcc;
214 u32 code;
215 u32 bitsperpixel;
216 };
217
218 /*
219 * When formats[] is modified make sure to adjust this value also.
220 * Expect compile time warnings if VPFE_NUM_FORMATS is smaller then
221 * the number of elements in formats[].
222 */
223 #define VPFE_NUM_FORMATS 10
224
225 struct vpfe_device {
226 /* V4l2 specific parameters */
227 /* Identifies video device for this channel */
228 struct video_device video_dev;
229 /* sub devices */
230 struct v4l2_subdev **sd;
231 /* vpfe cfg */
232 struct vpfe_config *cfg;
233 /* V4l2 device */
234 struct v4l2_device v4l2_dev;
235 /* parent device */
236 struct device *pdev;
237 /* subdevice async Notifier */
238 struct v4l2_async_notifier notifier;
239 /* Indicates id of the field which is being displayed */
240 unsigned field;
241 unsigned sequence;
242 /* current interface type */
243 struct vpfe_hw_if_param vpfe_if_params;
244 /* ptr to currently selected sub device */
245 struct vpfe_subdev_info *current_subdev;
246 /* current input at the sub device */
247 int current_input;
248 /* Keeps track of the information about the standard */
249 struct vpfe_std_info std_info;
250 /* std index into std table */
251 int std_index;
252 /* IRQs used when CCDC output to SDRAM */
253 unsigned int irq;
254 /* Pointer pointing to current v4l2_buffer */
255 struct vpfe_cap_buffer *cur_frm;
256 /* Pointer pointing to next v4l2_buffer */
257 struct vpfe_cap_buffer *next_frm;
258 /* Used to store pixel format */
259 struct v4l2_format fmt;
260 /* Used to keep a reference to the current vpfe_fmt */
261 struct vpfe_fmt *current_vpfe_fmt;
262 struct vpfe_fmt *active_fmt[VPFE_NUM_FORMATS];
263 unsigned int num_active_fmt;
264
265 /*
266 * used when IMP is chained to store the crop window which
267 * is different from the image window
268 */
269 struct v4l2_rect crop;
270 /* Buffer queue used in video-buf */
271 struct vb2_queue buffer_queue;
272 /* Queue of filled frames */
273 struct list_head dma_queue;
274 /* IRQ lock for DMA queue */
275 spinlock_t dma_queue_lock;
276 /* lock used to access this structure */
277 struct mutex lock;
278 /*
279 * offset where second field starts from the starting of the
280 * buffer for field separated YCbCr formats
281 */
282 u32 field_off;
283 struct vpfe_ccdc ccdc;
284 int stopping;
285 struct completion capture_stop;
286 };
287
288 #endif /* AM437X_VPFE_H */
289