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/linux/Documentation/sound/cards/
H A Dcmipci.rst2 Brief Notes on C-Media 8338/8738/8768/8770 Driver
8 Front/Rear Multi-channel Playback
9 ---------------------------------
13 DACs, both streams are handled independently unlike the 4/6ch multi-
22 - The first DAC supports U8 and S16LE formats, while the second DAC
24 - The second DAC supports only two channel stereo.
51 control switch in the driver "Line-In As Rear", which you can change
52 via alsamixer or somewhat else. When this switch is on, line-in jack
60 4/6 Multi-Channel Playback
61 --------------------------
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/linux/sound/pci/cs5535audio/
H A Dcs5535audio_olpc.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * OLPC XO-1 additional sound features
6 * Copyright © 2007-2008 Andres Salomon <dilinger@debian.org>
17 #define DRV_NAME "cs5535audio-olpc"
21 * It has an Analog Input mode that is switched into (after disabling the
22 * High Pass Filter) via GPIO. It is supported on B2 and later models.
31 /* update the High Pass Filter (via AC97_AD_TEST2) */ in olpc_analog_input()
35 dev_err(ac97->bus->card->dev, in olpc_analog_input()
36 "setting High Pass Filter - %d\n", err); in olpc_analog_input()
40 /* set Analog Input through GPIO */ in olpc_analog_input()
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/linux/drivers/comedi/drivers/
H A Ds626.c1 // SPDX-License-Identifier: GPL-2.0+
6 * COMEDI - Linux Control and Measurement Device Interface
10 * Copyright (C) 2002-2004 Sensoray Co., Inc.
24 * analog input:
27 * analog output:
68 * struct s626_private - Working data for s626 driver.
69 * @ai_cmd_running: non-zero if ai_cmd is running.
98 #define S626_INDXMASK(C) (1 << (((C) > 2) ? ((C) * 2 - 1) : ((C) * 2 + 4)))
103 * through Main Control Registers 1 or 2.
110 writel(val, dev->mmio + reg); in s626_mc_enable()
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H A Dpcmmio.c1 // SPDX-License-Identifier: GPL-2.0+
4 * Driver for Winsystems PC-104 based multifunction IO board.
6 * COMEDI - Linux Control and Measurement Device Interface
12 * Description: A driver for the PCM-MIO multifunction board
13 * Devices: [Winsystems] PCM-MIO (pcmmio)
15 * Updated: Wed, May 16 2007 16:21:10 -0500
18 * A driver for the PCM-MIO multifunction board from Winsystems. This
19 * is a PC-104 based I/O board. It contains four subdevices:
21 * subdevice 0 - 16 channels of 16-bit AI
22 * subdevice 1 - 8 channels of 16-bit AO
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H A Dcomedi_test.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Generates fake waveform signals that can be read through
13 * COMEDI - Linux Control and Measurement Device Interface
24 * Updated: Sat, 16 Mar 2002 17:34:48 -0800
30 * Auto-configuration is the default mode if no parameter is supplied during
32 * To disable auto-configuration mode, pass "noauto=1" parameter for module
35 * Auto-configuration options:
39 * [0] - Amplitude in microvolts for fake waveforms (default 1 volt)
40 * [1] - Period in microseconds for fake waveforms (default 0.1 sec)
69 MODULE_PARM_DESC(noauto, "Disable auto-configuration: (1=disable [defaults to enable])");
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H A Dni_labpc_common.c1 // SPDX-License-Identifier: GPL-2.0+
7 * Copyright (C) 2001-2003 Frank Mori Hess <fmhess@users.sourceforge.net>
86 return inb(dev->iobase + reg); in labpc_inb()
92 outb(byte, dev->iobase + reg); in labpc_outb()
99 return readb(dev->mmio + reg); in labpc_readb()
105 writeb(byte, dev->mmio + reg); in labpc_writeb()
110 struct labpc_private *devpriv = dev->private; in labpc_cancel()
113 spin_lock_irqsave(&dev->spinlock, flags); in labpc_cancel()
114 devpriv->cmd2 &= ~(CMD2_SWTRIG | CMD2_HWTRIG | CMD2_PRETRIG); in labpc_cancel()
115 devpriv->write_byte(dev, devpriv->cmd2, CMD2_REG); in labpc_cancel()
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/linux/Documentation/fb/
H A Dmatroxfb.rst2 matroxfb - Framebuffer driver for Matrox devices
13 * Most important: boot logo :-)
28 pass to the kernel this command line: "video=matroxfb:vesa:0x1BB".
31 box) and matroxfb (for graphics mode). You should not compile-in vesafb
32 unless you have primary display on non-Matrox VBE2.0 device (see
35 Currently supported video modes are (through vesa:... interface, PowerMac
40 -------------
55 -------------------------
70 ----------
83 Non-listed number can be achieved by more complicated command-line, for
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/linux/drivers/media/pci/saa7164/
H A Dsaa7164-cards.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
17 * and keep the -i2c.c implementation clean.
42 .name = "Hauppauge WinTV-HVR2200",
60 .name = "TDA18271-1",
67 .name = "TDA18271-2",
74 .name = "TDA10048-1",
81 .name = "TDA10048-2",
88 .name = "Hauppauge WinTV-HVR2200",
106 .name = "TDA18271-1",
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/linux/Documentation/driver-api/usb/
H A Dwriting_musb_glue_layer.rst15 Instead, these embedded UDC rely on the USB On-the-Go (OTG)
18 Dual-Role Controller (MUSB HDRC) found in the Mentor Graphics Inventra™
21 As a self-taught exercise I have written an MUSB glue layer for the
24 ``drivers/usb/musb/jz4740.c``. In this documentation I will walk through the
28 .. _musb-basics:
33 To get started on the topic, please read USB On-the-Go Basics (see
35 hardware level. A couple of wiki pages by Texas Instruments and Analog
39 may come in handy, with practical instance provided through the Writing
46 ------------------------
47 | | <------- drivers/usb/gadget
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/linux/include/uapi/linux/
H A Dcomedi.h1 /* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
32 * NOTE: 'comedi_config --init-data' is deprecated
35 * comedi_config to pass firmware blobs from user space to the
40 /* length of nth chunk of firmware data -*/
73 #define AREF_GROUND 0x00 /* analog ref = analog ground */
74 #define AREF_COMMON 0x01 /* analog ref = analog common */
75 #define AREF_DIFF 0x02 /* analog ref = differential */
76 #define AREF_OTHER 0x03 /* analog ref = other (undefined) */
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/linux/Documentation/input/devices/
H A Djoystick-parport.rst3 .. _joystick-parport:
9 :Copyright: |copy| 1998-2000 Vojtech Pavlik <vojtech@ucw.cz>
10 :Copyright: |copy| 1998 Andree Borrmann <a.borrmann@tu-bs.de>
18 Any information in this file is provided as-is, without any guarantee that
36 Many console and 8-bit computer gamepads and joysticks are supported. The
40 ------------
59 for your pads, use either keyboard or joystick port, and make a pass-through
69 (pin 9) -----> Power
72 ports that can't give much current through the data pins. If this is your
77 (pin 9) ----|>|-------+------> Power
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/linux/sound/pci/ca0106/
H A Dca0106.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
12 * Removed noise from Center/LFE channel when in Analog mode.
50 * Implement support for Line-in capture on SB Live 24bit.
73 #define IPR_MIDI_RX_B 0x00020000 /* MIDI UART-B Receive buffer non-empty */
74 #define IPR_MIDI_TX_B 0x00010000 /* MIDI UART-B Transmit buffer empty */
87 #define IPR_MIDI_RX_A 0x00000004 /* MIDI UART-A Receive buffer non-empty */
88 #define IPR_MIDI_TX_A 0x00000002 /* MIDI UART-A Transmit buffer empty */
93 #define INTE_MIDI_RX_B 0x00020000 /* MIDI UART-B Receive buffer non-empty */
94 #define INTE_MIDI_TX_B 0x00010000 /* MIDI UART-B Transmit buffer empty */
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/linux/drivers/net/ethernet/intel/ixgbe/
H A Dixgbe_82598.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
26 * ixgbe_set_pcie_completion_timeout - set pci-e completion timeout
31 * than the 10ms recommended by the pci-e spec. To address this we need to
40 if (ixgbe_removed(hw->hw_addr)) in ixgbe_set_pcie_completion_timeout()
49 * timeout of 10ms to 250ms through the GCR register in ixgbe_set_pcie_completion_timeout()
72 struct ixgbe_mac_info *mac = &hw->mac; in ixgbe_get_invariants_82598()
77 mac->mcft_size = IXGBE_82598_MC_TBL_SIZE; in ixgbe_get_invariants_82598()
78 mac->vft_size = IXGBE_82598_VFT_TBL_SIZE; in ixgbe_get_invariants_82598()
79 mac->num_rar_entries = IXGBE_82598_RAR_ENTRIES; in ixgbe_get_invariants_82598()
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/linux/Documentation/spi/
H A Dspi-summary.rst5 02-Feb-2012
8 ------------
17 clocking modes through which data is exchanged; mode-0 and mode-3 are most
32 - SPI may be used for request/response style device protocols, as with
35 - It may also be used to stream data in either direction (half duplex),
38 - Some devices may use eight bit words. Others may use different word
39 lengths, such as streams of 12-bit or 20-bit digital samples.
41 - Words are usually sent with their most significant bit (MSB) first,
44 - Sometimes SPI is used to daisy-chain devices, like shift registers.
51 SPI is only one of the names used by such four-wire protocols, and
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/linux/Documentation/sound/
H A Dalsa-configuration.rst2 Advanced Linux Sound Architecture - Driver Configuration guide
38 ----------
47 limiting card index for auto-loading (1-8);
49 For auto-loading more than one card, specify this option
50 together with snd-card-X aliases.
63 Module snd-pcm-oss
64 ------------------
86 regarding opening the device. When this option is non-zero,
90 Module snd-rawmidi
91 ------------------
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/linux/drivers/iio/adc/
H A Dad7380.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Analog Devices AD738x Simultaneous Sampling SAR ADCs
5 * Copyright 2017 Analog Devices Inc.
9 * ad7380/1 : https://www.analog.com/media/en/technical-documentation/data-sheets/AD7380-7381.pdf
10 * ad7383/4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7383-7384.pdf
11 …* ad7386/7/8 : https://www.analog.com/media/en/technical-documentation/data-sheets/AD7386-7387-738…
12 * ad7380-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7380-4.pdf
13 * ad7381-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7381-4.pdf
14 …* ad7383/4-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7383-4-ad7384…
15 …* ad7386/7/8-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7386-4-7387…
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/linux/drivers/gpu/drm/
H A Ddrm_modes.c2 * Copyright © 1997-2003 by The XFree86 Project, Inc.
4 * Copyright © 2007-2008 Intel Corporation
6 * Copyright 2005-2006 Luc Verhaegen
53 * drm_mode_debug_printmodeline - print a mode to dmesg
65 * drm_mode_create - create a new display mode
87 * drm_mode_destroy - remove a mode
103 * drm_mode_probed_add - add a mode to a connector's probed_mode list
114 WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); in drm_mode_probed_add()
116 list_add_tail(&mode->head, &connector->probed_modes); in drm_mode_probed_add()
127 * - https://web.archive.org/web/20220406232708/http://www.kolumbus.fi/pami1/video/pal_ntsc.html
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/linux/drivers/gpu/drm/meson/
H A Dmeson_venc.c1 // SPDX-License-Identifier: GPL-2.0-or-later
25 * - CVBS Encoding via the ENCI encoder and VDAC digital to analog converter
26 * - TMDS/HDMI Encoding via ENCI_DIV and ENCP
27 * - Setup of more clock rates for HDMI modes
31 * - LCD Panel encoding via ENCL
32 * - TV Panel encoding via ENCT
39 * vd1---| |-| | | VENC /---------|----VDAC
40 * vd2---| VIU |-| VPP |-|-----ENCI/-ENCI_DVI-|-|
41 * osd1--| |-| | | \ | X--HDMI-TX
42 * osd2--|_____|-|_____| | |\-ENCP--ENCP_DVI-|-|
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/linux/drivers/media/pci/cx88/
H A Dcx88-cards.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * card-specific stuff.
19 static unsigned int tuner[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
20 static unsigned int radio[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
21 static unsigned int card[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
45 /* ------------------------------------------------------------------ */
223 .name = "MSI TV-@nywhere Master",
325 .name = "IODATA GV-VCP3/PCI",
367 .name = "ASUS PVR-416",
390 .name = "MSI TV-@nywhere",
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/linux/sound/soc/codecs/
H A Dsta32x.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system
34 #include <sound/soc-dapm.h>
54 /* Power-up register defaults */
130 "Vdda", /* analog suppl
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/linux/drivers/gpu/drm/amd/display/amdgpu_dm/
H A Damdgpu_dm_helpers.c1 // SPDX-License-Identifier: MIT
54 return (u32)edid->mfg_id[0] << 24 | in edid_extract_panel_id()
55 (u32)edid->mfg_id[1] << 16 | in edid_extract_panel_id()
67 edid_caps->panel_patch.wait_after_dpcd_poweroff_ms = 10000; in apply_edid_quirks()
74 edid_caps->panel_patch.disable_fams = true; in apply_edid_quirks()
83 edid_caps->panel_patch.remove_sink_ext_caps = true; in apply_edid_quirks()
88 edid_caps->panel_patch.disable_colorimetry = true; in apply_edid_quirks()
96 * dm_helpers_parse_edid_caps() - Parse edid caps
109 struct amdgpu_dm_connector *aconnector = link->priv; in dm_helpers_parse_edid_caps()
110 struct drm_connector *connector = &aconnector->base; in dm_helpers_parse_edid_caps()
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/linux/Documentation/admin-guide/media/
H A Dbttv.rst1 .. SPDX-License-Identifier: GPL-2.0
8 ----------------------
12 ./scripts/config -e PCI
13 ./scripts/config -m I2C
14 ./scripts/config -m INPUT
15 ./scripts/config -m MEDIA_SUPPORT
16 ./scripts/config -e MEDIA_PCI_SUPPORT
17 ./scripts/config -e MEDIA_ANALOG_TV_SUPPORT
18 ./scripts/config -e MEDIA_DIGITAL_TV_SUPPORT
19 ./scripts/config -e MEDIA_RADIO_SUPPORT
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/linux/drivers/net/wireless/broadcom/b43/
H A Dphy_g.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
8 Copyright (c) 2005-2007 Stefano Brivio <stefano.brivio@polimi.it>
9 Copyright (c) 2005-2008 Michael Buesch <m@bues.ch>
41 5, -7, -20, -20,
42 -20, -20, -20, -20,
43 -20, -20, -20, -20,
65 return b43_radio_channel_codes_bg[channel - 1]; in channel2freq_bg()
71 struct b43_phy *phy = &dev->phy; in generate_rfatt_list()
113 list->list = rfatt_0; in generate_rfatt_list()
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/linux/Documentation/admin-guide/
H A Dkernel-parameters.txt39 Documentation/arch/m68k/kernel-options.rst.
49 PARISC The PA-RISC architecture is enabled.
64 the Documentation/scsi/ sub-directory.
83 X86-32 X86-32, aka i386 architecture is enabled.
84 X86-64 X86-64 architecture is enabled.
85 X86 Either 32-bit or 64-bit x86 (same as X86-32+X86-64)
94 KNL Is a kernel start-up parameter.
114 force -- enable ACPI if default was off
115 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
116 off -- disable ACPI if default was on
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/linux/drivers/iio/buffer/
H A Dindustrialio-buffer-dma.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright 2013-2015 Analog Devices Inc.
4 * Author: Lars-Peter Clausen <lars@metafoo.de>
18 #include <linux/iio/buffer-dma.h>
19 #include <linux/dma-buf.h>
20 #include <linux/dma-fence.h>
21 #include <linux/dma-mapping.h>
25 * For DMA buffers the storage is sub-divided into so called blocks. Each block
80 * received through its submit_block() callback, even if it does not actually
101 struct iio_dma_buffer_queue *queue = block->queue; in iio_buffer_block_release()
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