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/linux/Documentation/userspace-api/media/dvb/
H A Dlegacy_dvb_osd.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later OR GPL-2.0
14 The DVB OSD device controls the OnScreen-Display of the AV7110 based
15 DVB-cards with hardware MPEG2 decoder. It can be accessed through
20 The OSD is not a frame-buffer like on many other cards.
22 The color-depth is limited depending on the memory size installed.
31 -----------
36 .. code-block:: c
39 /* All functions return -2 on "not open" */
67 .. note:: All functions return -2 on "not open"
69 .. flat-table::
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H A Dlegacy_dvb_video.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later OR GPL-2.0
40 --------------
45 .. code-block:: c
56 .. flat-table::
57 :header-rows: 0
58 :stub-columns: 0
60 - ..
62 - ``VIDEO_FORMAT_4_3``
64 - Select 4:3 format.
66 - ..
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/linux/Documentation/userspace-api/media/v4l/
H A Dext-ctrls-colorimetry.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _colorimetry-controls:
15 -----------------------
17 .. _colorimetry-control-id:
32 .. flat-table:: struct v4l2_ctrl_hdr10_cll_info
33 :header-rows: 0
34 :stub-columns: 0
37 * - __u16
38 - ``max_content_light_level``
39 - The upper bound for the maximum light level among all individual
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H A Dext-ctrls-codec.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _codec-controls:
24 .. _mpeg-control-id:
27 -----------------
35 .. _v4l2-mpeg-stream-type:
40 enum v4l2_mpeg_stream_type -
41 The MPEG-1, -2 or -4 output stream type. One cannot assume anything
48 .. flat-table::
49 :header-rows: 0
50 :stub-columns: 0
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H A Dext-ctrls-camera.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _camera-controls:
13 .. _camera-control-id:
23 .. _v4l2-exposure-auto-type:
28 enum v4l2_exposure_auto_type -
37 .. flat-table::
38 :header-rows: 0
39 :stub-columns: 0
41 * - ``V4L2_EXPOSURE_AUTO``
42 - Automatic exposure time, automatic iris aperture.
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H A Dvidioc-enumstd.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_ENUMSTD - VIDIOC_SUBDEV_ENUMSTD - Enumerate supported video standards
52 .. flat-table:: struct v4l2_standard
53 :header-rows: 0
54 :stub-columns: 0
57 * - __u32
58 - ``index``
59 - Number of the video standard, set by the application.
60 * - :ref:`v4l2_std_id <v4l2-std-id>`
61 - ``id``
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H A Dext-ctrls-fm-rx.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _fm-rx-controls:
13 .. _fm-rx-control-id:
27 Gets RDS Programme Type field. This encodes up to 31 pre-defined
32 static display on a receiver. It is the primary aid to listeners in
45 wishes to transmit longer PS names, programme-related information or
70 enum v4l2_deemphasis -
71 Configures the de-emphasis value for reception. A de-emphasis filter
75 values for de-emphasis. Here they are:
79 .. flat-table::
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H A Dvidioc-g-fbuf.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_G_FBUF - VIDIOC_S_FBUF - Get or set frame buffer overlay parameters
46 The V4L2 API distinguishes destructive and non-destructive overlays. A
48 of a graphics card. A non-destructive overlay blends video images into a
50 always non-destructive.
81 .. flat-table:: struct v4l2_framebuffer
82 :header-rows: 0
83 :stub-columns: 0
86 * - __u32
87 - ``capability``
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H A Dvidioc-querycap.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_QUERYCAP - Query device capabilities
47 .. flat-table:: struct v4l2_capability
48 :header-rows: 0
49 :stub-columns: 0
52 * - __u8
53 - ``driver``\ [16]
54 - Name of the driver, a unique NUL-terminated ASCII string. For
62 sure the strings are properly NUL-terminated.
63 * - __u8
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/linux/include/uapi/linux/
H A Dvt.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
7 * These constants are also useful for user-level apps (e.g., VC
40 #define VT_RELDISP 0x5605 /* release display */
47 unsigned short v_rows; /* number of rows */
54 unsigned short v_rows; /* number of rows */
56 unsigned short v_vlin; /* number of pixel rows on screen */
57 unsigned short v_clin; /* number of pixel rows per character */
71 #define VT_EVENT_RESIZE 0x0008 /* Resize display */
/linux/drivers/auxdisplay/
H A Dht16k33.c1 // SPDX-License-Identifier: GPL-2.0
30 #include "line-display.h"
73 uint32_t rows; member
140 uint8_t data = REG_DISPLAY_SETUP | REG_DISPLAY_SETUP_ON | priv->blink; in ht16k33_display_on()
142 return i2c_smbus_write_byte(priv->client, data); in ht16k33_display_on()
147 return i2c_smbus_write_byte(priv->client, REG_DISPLAY_SETUP); in ht16k33_display_off()
156 priv->blink = REG_DISPLAY_SETUP_BLINK_OFF; in ht16k33_brightness_set()
164 return i2c_smbus_write_byte(priv->client, in ht16k33_brightness_set()
165 REG_BRIGHTNESS | (brightness - 1)); in ht16k33_brightness_set()
198 err = i2c_smbus_write_byte(priv->client, in ht16k33_blink_set()
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H A Dcharlcd.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu>
6 * Copyright (C) 2016-2017 Glider bvba
14 #define LCD_FLAG_D 0x0010 /* Display on */
16 #define LCD_FLAG_N 0x0040 /* 2-rows mode */
58 * struct charlcd_ops - Functions used by charlcd. Drivers have to implement
61 * @print: Print one character to the display at current cursor position.
68 * @clear_display: Clear the whole display and set the cursor to 0, 0. The
71 * @init_display: Initialize the display.
73 * @shift_display: Shift whole display content left or right.
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H A Dhd44780.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu>
6 * Copyright (C) 2016-2017 Glider bvba
43 struct hd44780_common *hdc = lcd->drvdata; in hd44780_backlight()
44 struct hd44780 *hd = hdc->hd44780; in hd44780_backlight()
46 if (hd->pins[PIN_CTRL_BL]) in hd44780_backlight()
47 gpiod_set_value_cansleep(hd->pins[PIN_CTRL_BL], on); in hd44780_backlight()
55 gpiod_set_value_cansleep(hd->pins[PIN_CTRL_E], 1); in hd44780_strobe_gpio()
60 gpiod_set_value_cansleep(hd->pins[PIN_CTRL_E], 0); in hd44780_strobe_gpio()
66 DECLARE_BITMAP(values, 10); /* for DATA[0-7], RS, RW */ in hd44780_write_gpio8()
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/linux/drivers/video/console/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
6 menu "Console display driver support"
17 display that complies with the generic VGA standard. Virtually
28 tristate "MDA text console (dual-headed)"
59 On PA-RISC, the default value is 160, which should fit a 1280x1024
64 int "Initial number of console screen rows"
70 On PA-RISC, the default value is 64, which should fit a 1280x1024
82 Low-level framebuffer-based console driver.
90 This option enables the fbcon (framebuffer text-based) hardware
94 On modern machines, on mainstream machines (like x86-64) or when
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H A Dvgacon.c2 * linux/drivers/video/vgacon.c -- Low level VGA based console driver
16 * Improved loadable font/UTF-8 support by H. Peter Anvin
17 * Feb-Sep 1995 <peter.anvin@linux.org>
20 * 17-Jun-95 <sgt20@cam.ac.uk>
22 * if 512 char mode is already enabled don't re-enable it,
24 * 5-May-96 <mitja.horvat@guest.arnes.si>
100 * Disabling scrollback is required for the Braillex ib80-piezo in no_scroll()
102 * Use the "no-scroll" bootflag. in no_scroll()
108 __setup("no-scroll", no_scroll);
114 * possibility that some pre-dinosaur hardware won't like the back to back
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/linux/drivers/video/fbdev/core/
H A Dfbcon.h2 * linux/drivers/video/console/fbcon.h -- Low level frame buffer based console driver
22 * This is the interface between the low-level console driver and the
23 * low-level frame buffer device
27 /* Filled in by the low-level console driver */
35 int vrows; /* number of virtual rows */
114 max_len = max(info->var.green.length, info->var.red.length); in mono_col()
115 max_len = max(info->var.blue.length, max_len); in mono_col()
130 if (vc->vc_can_do_color) in attr_col_ec()
131 return is_fg ? attr_fgcol(shift,vc->vc_video_erase_char) in attr_col_ec()
132 : attr_bgcol(shift,vc->vc_video_erase_char); in attr_col_ec()
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H A Dfbcon.c2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org)
34 * 2001 - Documented with DocBook
35 * - Brad Douglas <brad@neruo.com>
37 * The low level operations for the various display memory organizations are
51 * - Implement 16 plane mode (iplan2p16)
88 * - fbcon state itself is protected by the console_lock, and the code does a
91 * - fbcon doesn't bother with fb_lock/unlock at all. This is buggy, since it
101 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
102 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
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/linux/Documentation/userspace-api/media/rc/
H A Drc-tables.rst1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
30 .. flat-table:: IR default keymapping
31 :header-rows: 0
32 :stub-columns: 0
36 - .. row 1
38 - Key code
40 - Meaning
42 - Key examples on IR
44 - .. row 2
46 - **Numeric keys**
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/linux/Documentation/userspace-api/media/cec/
H A Dcec-ioc-adap-g-log-addrs.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
15 CEC_ADAP_G_LOG_ADDRS, CEC_ADAP_S_LOG_ADDRS - Get or set the logical addresses
59 addresses have been claimed. If the file descriptor is in non-blocking mode then it will
62 A :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` event is sent when the
74 .. flat-table:: struct cec_log_addrs
75 :header-rows: 0
76 :stub-columns: 0
79 * - __u8
80 - ``log_addr[CEC_MAX_LOG_ADDRS]``
81 - The actual logical addresses that were claimed. This is set by the
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/linux/Documentation/admin-guide/media/
H A Drcar-fdp1.rst1 .. SPDX-License-Identifier: GPL-2.0
3 Renesas R-Car Fine Display Processor (FDP1) Driver
6 The R-Car FDP1 driver implements driver-specific controls as follows.
9 The video deinterlacing mode (such as Bob, Weave, ...). The R-Car FDP1
12 .. flat-table::
13 :header-rows: 0
14 :stub-columns: 0
17 * - ``"Progressive" (0)``
18 - The input image video stream is progressive (not interlaced). No
21 * - ``"Adaptive 2D/3D" (1)``
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/linux/drivers/gpu/drm/solomon/
H A Dssd130x.c1 // SPDX-License-Identifier: GPL-2.0-only
245 return regmap_bulk_write(ssd130x->regmap, SSD13XX_DATA, values, count); in ssd130x_write_data()
267 ret = regmap_write(ssd130x->regmap, SSD13XX_COMMAND, value); in ssd130x_write_cmd()
270 } while (--count); in ssd130x_write_cmd()
282 u8 col_end = col_start + cols - 1; in ssd130x_set_col_range()
285 if (col_start == ssd130x->col_start && col_end == ssd130x->col_end) in ssd130x_set_col_range()
292 ssd130x->col_start = col_start; in ssd130x_set_col_range()
293 ssd130x->col_end = col_end; in ssd130x_set_col_range()
300 u8 page_end = page_start + pages - 1; in ssd130x_set_page_range()
303 if (page_start == ssd130x->page_start && page_end == ssd130x->page_end) in ssd130x_set_page_range()
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/linux/drivers/video/fbdev/
H A Dhgafb.c2 * linux/drivers/video/hgafb.c -- Hercules graphics adaptor frame buffer device
10 * - Revision 0.1.8 (23 Oct 2002): Ported to new framebuffer api.
12 * - Revision 0.1.7 (23 Jan 2001): fix crash resulting from MDA only cards
14 * - Revision 0.1.6 (17 Aug 2000): new style structs
16 * - Revision 0.1.5 (13 Mar 2000): spinlocks instead of saveflags();cli();etc
18 * - Revision 0.1.4 (24 Jan 2000): fixed a bug in hga_card_detect() for
19 * HGA-only systems
20 * - Revision 0.1.3 (22 Jan 2000): modified for the new fb_info structure
25 * - Revision 0.1.0 (6 Dec 1999): faster scrolling and minor fixes
26 * - First release (25 Nov 1999)
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/linux/arch/arm/boot/dts/st/
H A Dste-nomadik-nhk15.dts1 // SPDX-License-Identifier: GPL-2.0
6 /dts-v1/;
7 #include <dt-bindings/interrupt-controller/irq.h>
8 #include <dt-bindings/gpio/gpio.h>
9 #include "ste-nomadik-stn8815.dtsi"
13 compatible = "st,nomadik-nhk-15";
22 stmpe-i2c0 = &stmpe0;
23 stmpe-i2c1 = &stmpe1;
71 disable-sxtalo;
72 disable-mxtalo;
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/linux/drivers/leds/
H A Dleds-aw200xx.c1 // SPDX-License-Identifier: GPL-2.0
23 #define AW200XX_DIM_MAX (BIT(6) - 1)
24 #define AW200XX_FADE_MAX (BIT(8) - 1)
41 AW200XX_REG(AW200XX_NUM_PAGES - 1, AW200XX_PAGE_SIZE - 1)
67 /* Fast clear display control register */
71 /* Display size configuration */
76 ((x) + (((x) / (columns)) * (AW200XX_DSIZE_COLUMNS_MAX - (columns))))
94 * Duty ratio of display scan (see p.15 of datasheet for formula):
99 #define AW200XX_DUTY_RATIO(rows) \ argument
100 (((592UL * USEC_PER_SEC) / 600500UL) * (MILLI / (rows)) / MILLI)
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/linux/drivers/tty/vt/
H A Dvt.c1 // SPDX-License-Identifier: GPL-2.0
17 * Code to check for different video-cards mostly by Galen Hunt,
18 * <g-hunt@ee.utah.edu>
20 * Rudimentary ISO 10646/Unicode/UTF-8 character set support by
21 * Markus Kuhn, <mskuhn@immd4.informatik.uni-erlangen.de>.
26 * Code for xterm like mouse click reporting by Peter Orbaek 20-Jul-94
29 * User-define
329 vc_uniscr_alloc(unsigned int cols,unsigned int rows) vc_uniscr_alloc() argument
569 unsigned int rows = bottom - top; con_scroll() local
1291 __vc_resize(struct vc_data * vc,unsigned int cols,unsigned int rows,bool from_user) __vc_resize() argument
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