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authorManjunath Hadli <manjunath.hadli@ti.com>2011-06-17 03:01:31 -0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-07-27 16:53:09 -0400
commita2c25b444e99f2369b29e507568c8703186174d0 (patch)
treec67e95cb9f0a3b83274b1f0c79c6c25fba3dc687 /include/media
parent9a78efc8fbd6776cd0f704be9cac7b013f3d3d16 (diff)
[media] davinci vpbe: V4L2 display driver for DM644X SoC
This is the display driver for Texas Instruments's DM644X family SoC. This patch contains the main implementation of the driver with the V4L2 interface. The driver implements the streaming model with support for both kernel allocated buffers and user pointers. It also implements all of the necessary IOCTLs necessary and supported by the video display device. Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Acked-by: Muralidharan Karicheri <m-karicheri2@ti.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/davinci/vpbe_display.h147
-rw-r--r--include/media/davinci/vpbe_types.h91
2 files changed, 238 insertions, 0 deletions
diff --git a/include/media/davinci/vpbe_display.h b/include/media/davinci/vpbe_display.h
new file mode 100644
index 000000000000..dbf6b37682cd
--- /dev/null
+++ b/include/media/davinci/vpbe_display.h
@@ -0,0 +1,147 @@
1/*
2 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation version 2.
7 *
8 * This program is distributed WITHOUT ANY WARRANTY of any
9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13#ifndef VPBE_DISPLAY_H
14#define VPBE_DISPLAY_H
15
16/* Header files */
17#include <linux/videodev2.h>
18#include <media/v4l2-common.h>
19#include <media/videobuf-dma-contig.h>
20#include <media/davinci/vpbe_types.h>
21#include <media/davinci/vpbe_osd.h>
22#include <media/davinci/vpbe.h>
23
24#define VPBE_DISPLAY_MAX_DEVICES 2
25
26enum vpbe_display_device_id {
27 VPBE_DISPLAY_DEVICE_0,
28 VPBE_DISPLAY_DEVICE_1
29};
30
31#define VPBE_DISPLAY_DRV_NAME "vpbe-display"
32
33#define VPBE_DISPLAY_MAJOR_RELEASE 1
34#define VPBE_DISPLAY_MINOR_RELEASE 0
35#define VPBE_DISPLAY_BUILD 1
36#define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
37 (VPBE_DISPLAY_MINOR_RELEASE << 8) | \
38 VPBE_DISPLAY_BUILD)
39
40#define VPBE_DISPLAY_VALID_FIELD(field) ((V4L2_FIELD_NONE == field) || \
41 (V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
42
43/* Exp ratio numerator and denominator constants */
44#define VPBE_DISPLAY_H_EXP_RATIO_N 9
45#define VPBE_DISPLAY_H_EXP_RATIO_D 8
46#define VPBE_DISPLAY_V_EXP_RATIO_N 6
47#define VPBE_DISPLAY_V_EXP_RATIO_D 5
48
49/* Zoom multiplication factor */
50#define VPBE_DISPLAY_ZOOM_4X 4
51#define VPBE_DISPLAY_ZOOM_2X 2
52
53/* Structures */
54struct display_layer_info {
55 int enable;
56 /* Layer ID used by Display Manager */
57 enum osd_layer id;
58 struct osd_layer_config config;
59 enum osd_zoom_factor h_zoom;
60 enum osd_zoom_factor v_zoom;
61 enum osd_h_exp_ratio h_exp;
62 enum osd_v_exp_ratio v_exp;
63};
64
65/* vpbe display object structure */
66struct vpbe_layer {
67 /* number of buffers in fbuffers */
68 unsigned int numbuffers;
69 /* Pointer to the vpbe_display */
70 struct vpbe_display *disp_dev;
71 /* Pointer pointing to current v4l2_buffer */
72 struct videobuf_buffer *cur_frm;
73 /* Pointer pointing to next v4l2_buffer */
74 struct videobuf_buffer *next_frm;
75 /* videobuf specific parameters
76 * Buffer queue used in video-buf
77 */
78 struct videobuf_queue buffer_queue;
79 /* Queue of filled frames */
80 struct list_head dma_queue;
81 /* Used in video-buf */
82 spinlock_t irqlock;
83 /* V4l2 specific parameters */
84 /* Identifies video device for this layer */
85 struct video_device video_dev;
86 /* This field keeps track of type of buffer exchange mechanism user
87 * has selected
88 */
89 enum v4l2_memory memory;
90 /* Used to keep track of state of the priority */
91 struct v4l2_prio_state prio;
92 /* Used to store pixel format */
93 struct v4l2_pix_format pix_fmt;
94 enum v4l2_field buf_field;
95 /* Video layer configuration params */
96 struct display_layer_info layer_info;
97 /* vpbe specific parameters
98 * enable window for display
99 */
100 unsigned char window_enable;
101 /* number of open instances of the layer */
102 unsigned int usrs;
103 /* number of users performing IO */
104 unsigned int io_usrs;
105 /* Indicates id of the field which is being displayed */
106 unsigned int field_id;
107 /* Indicates whether streaming started */
108 unsigned char started;
109 /* Identifies device object */
110 enum vpbe_display_device_id device_id;
111 /* facilitation of ioctl ops lock by v4l2*/
112 struct mutex opslock;
113 u8 layer_first_int;
114};
115
116/* vpbe device structure */
117struct vpbe_display {
118 /* layer specific parameters */
119 /* lock for isr updates to buf layers*/
120 spinlock_t dma_queue_lock;
121 /* C-Plane offset from start of y-plane */
122 unsigned int cbcr_ofst;
123 struct vpbe_layer *dev[VPBE_DISPLAY_MAX_DEVICES];
124 struct vpbe_device *vpbe_dev;
125 struct osd_state *osd_device;
126};
127
128/* File handle structure */
129struct vpbe_fh {
130 /* vpbe device structure */
131 struct vpbe_display *disp_dev;
132 /* pointer to layer object for opened device */
133 struct vpbe_layer *layer;
134 /* Indicates whether this file handle is doing IO */
135 unsigned char io_allowed;
136 /* Used to keep track priority of this instance */
137 enum v4l2_priority prio;
138};
139
140struct buf_config_params {
141 unsigned char min_numbuffers;
142 unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
143 unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
144 unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
145};
146
147#endif /* VPBE_DISPLAY_H */
diff --git a/include/media/davinci/vpbe_types.h b/include/media/davinci/vpbe_types.h
new file mode 100644
index 000000000000..727f55170e41
--- /dev/null
+++ b/include/media/davinci/vpbe_types.h
@@ -0,0 +1,91 @@
1/*
2 * Copyright (C) 2010 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation version 2.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 */
17#ifndef _VPBE_TYPES_H
18#define _VPBE_TYPES_H
19
20enum vpbe_version {
21 VPBE_VERSION_1 = 1,
22 VPBE_VERSION_2,
23 VPBE_VERSION_3,
24};
25
26/* vpbe_timing_type - Timing types used in vpbe device */
27enum vpbe_enc_timings_type {
28 VPBE_ENC_STD = 0x1,
29 VPBE_ENC_DV_PRESET = 0x2,
30 VPBE_ENC_CUSTOM_TIMINGS = 0x4,
31 /* Used when set timings through FB device interface */
32 VPBE_ENC_TIMINGS_INVALID = 0x8,
33};
34
35union vpbe_timings {
36 v4l2_std_id std_id;
37 unsigned int dv_preset;
38};
39
40/*
41 * struct vpbe_enc_mode_info
42 * @name: ptr to name string of the standard, "NTSC", "PAL" etc
43 * @std: standard or non-standard mode. 1 - standard, 0 - nonstandard
44 * @interlaced: 1 - interlaced, 0 - non interlaced/progressive
45 * @xres: x or horizontal resolution of the display
46 * @yres: y or vertical resolution of the display
47 * @fps: frame per second
48 * @left_margin: left margin of the display
49 * @right_margin: right margin of the display
50 * @upper_margin: upper margin of the display
51 * @lower_margin: lower margin of the display
52 * @hsync_len: h-sync length
53 * @vsync_len: v-sync length
54 * @flags: bit field: bit usage is documented below
55 *
56 * Description:
57 * Structure holding timing and resolution information of a standard.
58 * Used by vpbe_device to set required non-standard timing in the
59 * venc when lcd controller output is connected to a external encoder.
60 * A table of timings is maintained in vpbe device to set this in
61 * venc when external encoder is connected to lcd controller output.
62 * Encoder may provide a g_dv_timings() API to override these values
63 * as needed.
64 *
65 * Notes
66 * ------
67 * if_type should be used only by encoder manager and encoder.
68 * flags usage
69 * b0 (LSB) - hsync polarity, 0 - negative, 1 - positive
70 * b1 - vsync polarity, 0 - negative, 1 - positive
71 * b2 - field id polarity, 0 - negative, 1 - positive
72 */
73struct vpbe_enc_mode_info {
74 unsigned char *name;
75 enum vpbe_enc_timings_type timings_type;
76 union vpbe_timings timings;
77 unsigned int interlaced;
78 unsigned int xres;
79 unsigned int yres;
80 struct v4l2_fract aspect;
81 struct v4l2_fract fps;
82 unsigned int left_margin;
83 unsigned int right_margin;
84 unsigned int upper_margin;
85 unsigned int lower_margin;
86 unsigned int hsync_len;
87 unsigned int vsync_len;
88 unsigned int flags;
89};
90
91#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-16 18:45:40 -0500