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/linux-6.12.1/drivers/gpu/drm/exynos/
Dregs-gsc.h1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* linux/drivers/gpu/drm/exynos/regs-gsc.h
7 * Register definition file for Samsung G-Scaler driver
13 /* G-Scaler enable */
33 /* G-Scaler S/W reset */
37 /* G-Scaler IRQ */
45 /* G-Scaler input control */
91 /* G-Scaler source image size */
98 /* G-Scaler source image offset */
105 /* G-Scaler cropped source image size */
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/linux-6.12.1/drivers/media/platform/samsung/exynos-gsc/
Dgsc-regs.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
6 * Register definition file for Samsung G-Scaler driver
12 /* G-Scaler enable */
18 /* G-Scaler S/W reset */
22 /* G-Scaler IRQ */
29 /* G-Scaler input control */
65 /* G-Scaler source image size */
70 /* G-Scaler source image offset */
75 /* G-Scaler cropped source image size */
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Dgsc-core.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
6 * header file for Samsung EXYNOS5 SoC series G-Scaler driver
20 #include <media/videobuf2-v4l2.h>
21 #include <media/v4l2-ctrls.h>
22 #include <media/v4l2-device.h>
23 #include <media/v4l2-mem2mem.h>
24 #include <media/v4l2-mediabus.h>
25 #include <media/videobuf2-dma-contig.h>
27 #include "gsc-regs.h"
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "Samsung Exynos G-Scaler driver"
10 This is a v4l2 driver for Samsung EXYNOS5 SoC G-Scaler.
Dgsc-regs.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
6 * Samsung EXYNOS5 SoC series G-Scaler driver
12 #include "gsc-core.h"
16 writel(GSC_SW_RESET_SRESET, dev->regs + GSC_SW_RESET); in gsc_hw_set_sw_reset()
25 cfg = readl(dev->regs + GSC_SW_RESET); in gsc_wait_reset()
31 return -EBUSY; in gsc_wait_reset()
38 cfg = readl(dev->regs + GSC_IRQ); in gsc_hw_set_frm_done_irq_mask()
43 writel(cfg, dev->regs + GSC_IRQ); in gsc_hw_set_frm_done_irq_mask()
50 cfg = readl(dev->regs + GSC_IRQ); in gsc_hw_set_gsc_irq_enable()
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Dgsc-core.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
6 * Samsung EXYNOS5 SoC series G-Scaler driver
23 #include <media/v4l2-ioctl.h>
25 #include "gsc-core.h"
218 if (pixelformat && fmt->pixelformat == *pixelformat) in find_fmt()
220 if (mbus_code && fmt->mbus_code == *mbus_code) in find_fmt()
231 frame->f_width = width; in gsc_set_frame_size()
232 frame->f_height = height; in gsc_set_frame_size()
233 frame->crop.width = width; in gsc_set_frame_size()
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Dgsc-m2m.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
6 * Samsung EXYNOS5 SoC series G-Scaler driver
23 #include <media/v4l2-ioctl.h>
25 #include "gsc-core.h"
30 struct gsc_dev *gsc = ctx->gsc_dev; in gsc_m2m_ctx_stop_req()
33 curr_ctx = v4l2_m2m_get_curr_priv(gsc->m2m.m2m_dev); in gsc_m2m_ctx_stop_req()
38 ret = wait_event_timeout(gsc->irq_queue, in gsc_m2m_ctx_stop_req()
42 return ret == 0 ? -ETIMEDOUT : ret; in gsc_m2m_ctx_stop_req()
50 if ((ret == -ETIMEDOUT) || (ctx->state & GSC_CTX_ABORT)) { in __gsc_m2m_job_abort()
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/linux-6.12.1/Documentation/devicetree/bindings/hwmon/
Dmoortec,mr75203.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rahul Tanwar <rtanwar@maxlinear.com>
19 *) Temperature Sensor (TS) - used to monitor core temperature (e.g. mr74137).
20 *) Voltage Monitor (VM) - used to monitor voltage levels (e.g. mr74138).
21 *) Process Detector (PD) - used to assess silicon speed (e.g. mr74139).
22 *) Delay Chain - ring oscillator connected to the PD, used to measure IO
23 based transistors (e.g. mr76008 ring oscillator at 1.1V, mr76007 ring
25 *) Pre Scaler - provides divide-by-X scaling of input voltage, which can then
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/linux-6.12.1/Documentation/devicetree/bindings/media/
Dsamsung,exynos5250-gsc.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/samsung,exynos5250-gsc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Samsung Exynos SoC G-Scaler
10 - Inki Dae <inki.dae@samsung.com>
11 - Krzysztof Kozlowski <krzk@kernel.org>
12 - Seung-Woo Kim <sw0312.kim@samsung.com
15 G-Scaler is used for scaling and color space conversion on Samsung Exynos
18 Each G-Scaler node should have a numbered alias in the aliases node, in the
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/linux-6.12.1/Documentation/userspace-api/media/v4l/
Ddev-subdev.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
6 Sub-device Interface
13 components as software blocks called sub-devices.
15 V4L2 sub-devices are usually kernel-only objects. If the V4L2 driver
17 media entities. Applications will be able to enumerate the sub-devices
21 In addition to make sub-devices discoverable, drivers can also choose to
23 sub-device driver and the V4L2 device driver support this, sub-devices
26 - query, read and write sub-devices controls
28 - subscribe and unsubscribe to events and retrieve them
30 - negotiate image formats on individual pads
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/linux-6.12.1/Documentation/admin-guide/media/
Dvimc.rst1 .. SPDX-License-Identifier: GPL-2.0
7 API. It has a capture device and three subdevices: sensor, debayer and scaler.
10 --------
12 The topology is hardcoded, although you could modify it in vimc-core and
17 .. kernel-figure:: vimc.dot
29 If the configuration doesn't match, the stream will fail. The ``v4l-utils``
30 package is a bundle of user-space applications, that comes with ``media-ctl`` and
31 ``v4l2-ctl`` that can be used to configure the vimc configuration. This sequence
34 .. code-block:: bash
36 media-ctl -d platform:vimc -V '"Sensor A":0[fmt:SBGGR8_1X8/640x480]'
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Dipu3.rst1 .. SPDX-License-Identifier: GPL-2.0
24 ImgU). The CIO2 driver is available as drivers/media/pci/intel/ipu3/ipu3-cio2*
36 Both of the drivers implement V4L2, Media Controller and V4L2 sub-device
38 MIPI CSI-2 interfaces through V4L2 sub-device sensor drivers.
44 interface to the user space. There is a video node for each CSI-2 receiver,
47 The CIO2 contains four independent capture channel, each with its own MIPI CSI-2
48 receiver and DMA engine. Each channel is modelled as a V4L2 sub-device exposed
49 to userspace as a V4L2 sub-device node and has two pads:
53 .. flat-table::
54 :header-rows: 1
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Dvivid.rst1 .. SPDX-License-Identifier: GPL-2.0
13 Each input can be a webcam, TV capture device, S-Video capture device or an HDMI
14 capture device. Each output can be an S-Video output device or an HDMI output
23 - Support for read()/write(), MMAP, USERPTR and DMABUF streaming I/O.
24 - A large list of test patterns and variations thereof
25 - Working brightness, contrast, saturation and hue controls
26 - Support for the alpha color component
27 - Full colorspace support, including limited/full RGB range
28 - All possible control types are present
29 - Support for various pixel aspect ratios and video aspect ratios
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Dplatform-cardlist.rst1 .. SPDX-License-Identifier: GPL-2.0
17 am437x-vpfe TI AM437x VPFE
18 aspeed-video Aspeed AST2400 and AST2500
19 atmel-isc ATMEL Image Sensor Controller (ISC)
20 atmel-isi ATMEL Image Sensor Interface (ISI)
24 cdns-csi2rx Cadence MIPI-CSI2 RX Controller
25 cdns-csi2tx Cadence MIPI-CSI2 TX Controller
26 coda-vpu Chips&Media Coda multi-standard codec IP
29 exynos-fimc-is EXYNOS4x12 FIMC-IS (Imaging Subsystem)
30 exynos-fimc-lite EXYNOS FIMC-LITE camera interface
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Dqcom_camss.rst1 .. SPDX-License-Identifier: GPL-2.0
9 ------------
25 ----------------------------------
30 - 2 / 3 CSIPHY modules. They handle the Physical layer of the CSI2 receivers.
32 - 2 / 4 CSID (CSI Decoder) modules. They handle the Protocol and Application
36 - ISPIF (ISP Interface) module. Handles the routing of the data streams from
38 - 1 / 2 VFE (Video Front End) module(s). Contain a pipeline of image processing
48 -----------------------
52 - Input from camera sensor via CSIPHY;
53 - Generation of test input data by the TG in CSID;
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/linux-6.12.1/drivers/iio/
Dindustrialio-gts-helper.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* gain-time-scale conversion helpers for IIO light sensors
18 #include <linux/iio/iio-gts-helper.h>
22 * iio_gts_get_gain - Convert scale to total gain
27 * in magnitude of NANOs and max scale is 64.1 - The linearized
31 * Return: (floored) gain corresponding to the scale. -EINVAL if scale
39 return -EINVAL; in iio_gts_get_gain()
45 * gain_get_scale_fraction - get the gain or time based on scale and known one
48 * in magnitude of NANOs and max scale is 64.1 - The linearized
73 return -EINVAL; in gain_get_scale_fraction()
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/linux-6.12.1/drivers/hwmon/
Dmr75203.c1 // SPDX-License-Identifier: GPL-2.0
111 #define PVT_TEMP_MIN_mC -40000
117 #define PVT_SERIES5_J_CONST -100
133 * struct voltage_device - VM single input parameters.
136 * @pre_scaler: Pre scaler value (1 or 2) used to normalize the voltage output
139 * The structure provides mapping between channel-number (0..N-1) to VM-index
140 * (0..num_vm-1) and channel-index (0..ch_num-1) where N = num_vm * ch_num.
150 * struct voltage_channels - VM channel count.
163 u32 g; member
188 struct pvt_device *pvt = file->private_data; in pvt_ts_coeff_j_read()
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/linux-6.12.1/drivers/gpu/drm/amd/display/modules/color/
Dcolor_gamma.c43 // The last point is above PQ formula range (0-125 in normalized FP16)
46 // first couple points are 0 - HW LUT is mirrored around zero, so making first
48 // min nonzero value below (216825) is a little under 12-bit PQ code 1.
146 * X[i] = 2 * X[i-NUM_PTS_IN_REGION] for i>=16
164 /* one-time setup of X points */
176 for (segment = 6; segment > (6 - NUM_REGIONS); segment--) { in setup_x_points_distribution()
180 seg_offset = (segment + (NUM_REGIONS - 7)) * NUM_PTS_IN_REGION; in setup_x_points_distribution()
187 (coordinates_x[index-1].x, increment); in setup_x_points_distribution()
272 /* de gamma, non-linear to linear */
304 /* re gamma, linear to non-linear */
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/linux-6.12.1/Documentation/devicetree/bindings/display/
Damlogic,meson-vpu.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/display/amlogic,meson-vpu.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Neil Armstrong <neil.armstrong@linaro.org>
17 DMC|---------------VPU (Video Processing Unit)----------------|------HHI------|
19 D |-------| |----| | | | | HDMI PLL |
20 D | vd2 | VIU | | Video Post | | Video Encoders |<---|-----VCLK |
21 R |-------| |----| Processing | | | | |
22 | osd2 | | | |---| Enci ----------|----|-----VDAC------|
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/linux-6.12.1/drivers/gpu/drm/meson/
Dmeson_plane.c1 // SPDX-License-Identifier: GPL-2.0-or-later
81 if (!new_plane_state->crtc) in meson_plane_atomic_check()
85 new_plane_state->crtc); in meson_plane_atomic_check()
91 * - Upscaling up to 5x, vertical and horizontal in meson_plane_atomic_check()
92 * - Final coordinates must match crtc size in meson_plane_atomic_check()
117 switch (priv->afbcd.format) { in meson_g12a_afbcd_line_stride()
119 line_stride = ((priv->viu.osd1_width << 4) + 127) >> 7; in meson_g12a_afbcd_line_stride()
126 line_stride = ((priv->viu.osd1_width << 5) + 127) >> 7; in meson_g12a_afbcd_line_stride()
140 struct meson_drm *priv = meson_plane->priv; in meson_plane_atomic_update()
141 struct drm_framebuffer *fb = new_state->fb; in meson_plane_atomic_update()
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/linux-6.12.1/drivers/gpu/drm/nouveau/dispnv50/
Dhead.c44 .mask = asyh->clr.mask & ~(flush ? 0 : asyh->set.mask), in nv50_head_flush_clr()
47 if (clr.olut) head->func->olut_clr(head); in nv50_head_flush_clr()
48 if (clr.core) head->func->core_clr(head); in nv50_head_flush_clr()
49 if (clr.curs) head->func->curs_clr(head); in nv50_head_flush_clr()
55 if (asyh->set.curs ) head->func->curs_set(head, asyh); in nv50_head_flush_set_wndw()
56 if (asyh->set.olut ) { in nv50_head_flush_set_wndw()
57 asyh->olut.offset = nv50_lut_load(&head->olut, in nv50_head_flush_set_wndw()
58 asyh->olut.buffer, in nv50_head_flush_set_wndw()
59 asyh->state.gamma_lut, in nv50_head_flush_set_wndw()
60 asyh->olut.load); in nv50_head_flush_set_wndw()
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/linux-6.12.1/drivers/gpu/drm/i915/display/
Dintel_display_types.h3 * Copyright (c) 2007-2008 Intel Corporation
48 #include <media/cec-notifier.h>
71 /* these are outputs from the chip - integrated only
89 HDMI_AUDIO_OFF_DVI = -2, /* no aux data for HDMI-DVI converter */
105 * create the DMA scatter-gather list for each FB color plane. This sg
117 * in the rotated and remapped GTT view all no-CCS formats (up to 2
221 * state. This must be called _after_ display->get_pipe_config has
222 * pre-filled the pipe config. Note that intel_encoder->base.crtc must
442 * and the bus-specific code. What that means is that HDCP over HDMI differs
447 * - DP AUX vs. DDC
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/linux-6.12.1/drivers/gpu/drm/gma500/
Dgma_display.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright © 2006-2011 Intel Corporation
32 struct drm_device *dev = crtc->dev; in gma_pipe_has_type()
38 if (connector->encoder && connector->encoder->crtc == crtc) { in gma_pipe_has_type()
41 if (gma_encoder->type == type) { in gma_pipe_has_type()
61 struct drm_device *dev = crtc->dev; in gma_pipe_set_base()
64 struct drm_framebuffer *fb = crtc->primary->fb; in gma_pipe_set_base()
66 int pipe = gma_crtc->pipe; in gma_pipe_set_base()
67 const struct psb_offset *map = &dev_priv->regmap[pipe]; in gma_pipe_set_base()
77 dev_err(dev->dev, "No FB bound\n"); in gma_pipe_set_base()
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/linux-6.12.1/Documentation/userspace-api/media/mediactl/
Dmedia-types.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _media-controller-types:
10 .. _media-entity-functions:
11 .. _MEDIA-ENT-F-UNKNOWN:
12 .. _MEDIA-ENT-F-V4L2-SUBDEV-UNKNOWN:
13 .. _MEDIA-ENT-F-IO-V4L:
14 .. _MEDIA-ENT-F-IO-VBI:
15 .. _MEDIA-ENT-F-IO-SWRADIO:
16 .. _MEDIA-ENT-F-IO-DTV:
17 .. _MEDIA-ENT-F-DTV-DEMOD:
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/linux-6.12.1/drivers/media/test-drivers/
Dvim2m.c1 // SPDX-License-Identifier: GPL-2.0+
3 * A virtual v4l2-mem2mem example device.
5 * This is a virtual device driver for testing mem-to-mem vb2 framework.
9 * The device is capable of multi-instance, multi-buffer-per-transaction
12 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
23 #include <media/v4l2-mem2mem.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-ctrls.h>
27 #include <media/v4l2-event.h>
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