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/linux/Documentation/userspace-api/media/v4l/
H A Dvidioc-g-fbuf.rst227 - The device supports clipping/blending using the alpha channel of
228 the framebuffer or VGA signal. Alpha blending makes no sense for
232 - The device supports alpha blending using a global alpha value.
233 Alpha blending makes no sense for destructive overlays.
236 - The device supports clipping/blending using the inverted alpha
237 channel of the framebuffer or VGA signal. Alpha blending makes no
289 - Use the alpha channel of the framebuffer to clip or blend
291 output = framebuffer pixel * alpha + video pixel * (1 - alpha).
292 The actual alpha depth depends on the framebuffer pixel format.
295 - Use a global alpha value to blend the framebuffer with video
[all …]
H A Dpixfmt-rgb.rst18 presence of an alpha component or additional padding bits.
20 The usage and value of the alpha bits in formats that support them (named ARGB
21 or a permutation thereof, collectively referred to as alpha formats) depend on
23 (including capture queues of mem-to-mem devices) fill the alpha component in
24 memory. When the device captures an alpha channel the alpha component will have
25 a meaningful value. Otherwise, when the device doesn't capture an alpha channel
26 but can set the alpha bit to a user-configurable value, the
27 :ref:`V4L2_CID_ALPHA_COMPONENT <v4l2-alpha-component>` control is used to
28 specify that alpha value, and the alpha component of all pixels will be set to
30 an alpha component (XRGB or XBGR) must be used instead of an alpha format.
[all …]
/linux/net/ipv4/
H A Dtcp_illinois.c50 u32 alpha; /* Additive increase */ member
73 ca->alpha = ALPHA_MAX; in tcp_illinois_init()
97 /* ignore bogus values, this prevents wraparound in alpha math */ in tcp_illinois_acked()
129 * Compute value of alpha used for additive increase.
134 * then use large alpha (10.0) to increase faster.
136 * then use small alpha (0.3)
140 static u32 alpha(struct illinois *ca, u32 da, u32 dm) in alpha() function
149 /* Wait for 5 good RTT's before allowing alpha to go alpha max. in alpha()
153 return ca->alpha; in alpha()
174 * alpha = ---------- in alpha()
[all …]
H A Dtcp_htcp.c27 u32 alpha; /* Fixed point arith, << 7 */ member
127 if (ca->packetcount >= tcp_snd_cwnd(tp) - (ca->alpha >> 7 ? : 1) && in measure_achieved_throughput()
194 ca->alpha = 2 * factor * ((1 << 7) - ca->beta); in htcp_alpha_update()
195 if (!ca->alpha) in htcp_alpha_update()
196 ca->alpha = ALPHA_BASE; in htcp_alpha_update()
243 * In theory this is tp->snd_cwnd += alpha / tp->snd_cwnd in htcp_cong_avoid()
245 if ((tp->snd_cwnd_cnt * ca->alpha)>>7 >= tcp_snd_cwnd(tp)) { in htcp_cong_avoid()
262 ca->alpha = ALPHA_BASE; in htcp_init()
/linux/Documentation/devicetree/bindings/iio/afe/
H A Dtemperature-sense-rtd.yaml24 R(T) = r0 * (1 + alpha * T)
25 T = 1 / (alpha * r0 * iexc) * (V - r0 * iexc)
62 alpha-ppm-per-celsius:
64 alpha can also be expressed in micro-ohms per ohm Celsius. It's a linear
68 alpha = (R_100 - R_0) / (100 * R_0)
74 Pure platinum has an alpha of 3925. Industry standards such as IEC60751
75 and ASTM E-1137 specify an alpha of 3850.
87 - alpha-ppm-per-celsius
98 alpha-ppm-per-celsius = <3908>;
H A Dtemperature-transducer.yaml26 T = (Isense(T) / alpha) + offset
27 T = 1 / (Rsense * alpha) * (V + offset * Rsense * alpha)
78 alpha-ppm-per-celsius:
82 alpha is expressed in parts per million which can be micro-amps per
92 - alpha-ppm-per-celsius
103 alpha-ppm-per-celsius = <1>; /* 1 uA/K */
112 alpha-ppm-per-celsius = <4000>; /* 4 mV/K */
/linux/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/
H A Dia_css_xnr3.host.c16 /* Maximum value for alpha on ISP interface */
65 * Compute an alpha value for the ISP kernel from sigma value on the host
71 s32 alpha; in compute_alpha() local
75 alpha = XNR_MAX_ALPHA; in compute_alpha()
77 alpha = ((IA_CSS_XNR3_SIGMA_SCALE * XNR_ALPHA_SCALE_FACTOR) + offset) / sigma; in compute_alpha()
79 if (alpha > XNR_MAX_ALPHA) in compute_alpha()
80 alpha = XNR_MAX_ALPHA; in compute_alpha()
83 return alpha; in compute_alpha()
158 /* alpha's are represented in qN.5 format */ in ia_css_xnr3_encode()
159 to->alpha.y0 = alpha_y0; in ia_css_xnr3_encode()
[all …]
/linux/tools/testing/selftests/net/
H A Dlwt_dst_cache_ref_loop.sh85 setup_ns alpha beta gamma &>/dev/null
87 ip link add name veth-alpha netns $alpha type veth \
93 ip -netns $alpha link set veth-alpha name veth0 &>/dev/null
98 ip -netns $alpha addr add 2001:db8:1::2/64 dev veth0 &>/dev/null
99 ip -netns $alpha link set veth0 up &>/dev/null
100 ip -netns $alpha link set lo up &>/dev/null
101 ip -netns $alpha route add 2001:db8:2::/64 \
122 ip netns exec $alpha ping6 -c 5 -W 1 2001:db8:2::2 &>/dev/null
133 cleanup_ns $alpha $beta $gamma
191 ip netns exec $alpha ping6 -c 2 -W 1 2001:db8:2::2 &>/dev/null
[all …]
/linux/drivers/gpu/drm/rockchip/
H A Drockchip_vop2_reg.c1799 static bool is_opaque(u16 alpha) in is_opaque() argument
1801 return (alpha >> 8) == 0xff; in is_opaque()
1805 struct vop2_alpha *alpha) in vop2_parse_alpha() argument
1814 alpha->src_color_ctrl.val = 0; in vop2_parse_alpha()
1815 alpha->dst_color_ctrl.val = 0; in vop2_parse_alpha()
1816 alpha->src_alpha_ctrl.val = 0; in vop2_parse_alpha()
1817 alpha->dst_alpha_ctrl.val = 0; in vop2_parse_alpha()
1820 alpha->src_color_ctrl.bits.blend_mode = ALPHA_GLOBAL; in vop2_parse_alpha()
1822 alpha->src_color_ctrl.bits.blend_mode = ALPHA_PER_PIX; in vop2_parse_alpha()
1824 alpha->src_color_ctrl.bits.blend_mode = ALPHA_PER_PIX_GLOBAL; in vop2_parse_alpha()
[all …]
/linux/Documentation/devicetree/bindings/display/
H A Dxylon,logicvc-display.yaml145 xylon,layer-alpha-mode:
147 # Alpha is configured layer-wide (C_LAYER_X_ALPHA_MODE == 0)
149 # Alpha is configured per-pixel (C_LAYER_X_ALPHA_MODE == 1)
151 description: Alpha mode for the layer (C_LAYER_X_ALPHA_MODE).
177 - xylon,layer-alpha-mode
248 xylon,layer-alpha-mode = "layer";
258 xylon,layer-alpha-mode = "layer";
267 xylon,layer-alpha-mode = "layer";
276 xylon,layer-alpha-mode = "layer";
285 xylon,layer-alpha-mode = "layer";
/linux/tools/testing/selftests/bpf/progs/
H A Dbpf_dctcp.c127 __u32 alpha = ca->dctcp_alpha; in BPF_PROG()
129 /* alpha = (1 - g) * alpha + g * F */ in BPF_PROG()
131 alpha -= min_not_zero(alpha, alpha >> dctcp_shift_g); in BPF_PROG()
141 alpha = min(alpha + delivered_ce, DCTCP_MAX_ALPHA); in BPF_PROG()
143 ca->dctcp_alpha = alpha; in BPF_PROG()
133 __u32 alpha = ca->dctcp_alpha; BPF_PROG() local
/linux/tools/arch/alpha/include/uapi/asm/
H A Dmman.h38 /* MADV_HWPOISON is undefined on alpha, fix it for perf */
40 /* MADV_SOFT_OFFLINE is undefined on alpha, fix it for perf */
42 /* MAP_32BIT is undefined on alpha, fix it for perf */
44 /* MAP_UNINITIALIZED is undefined on alpha, fix it for perf */
/linux/tools/testing/kunit/qemu_configs/
H A Dalpha.py3 QEMU_ARCH = QemuArchParams(linux_arch='alpha',
7 qemu_arch='alpha',
8 kernel_path='arch/alpha/boot/vmlinux',
/linux/arch/alpha/lib/
H A Dev67-strlen.S3 * arch/alpha/lib/ev67-strlen.S
4 * 21264 version by Rick Gorton <rick.gorton@alpha-processor.com>
7 * Alpha architecture:
13 * Compiler Writer's Guide for the Alpha 21264
H A Dev67-strrchr.S3 * arch/alpha/lib/ev67-strrchr.S
4 * 21264 version by Rick Gorton <rick.gorton@alpha-processor.com>
7 * Alpha architecture:
13 * Compiler Writer's Guide for the Alpha 21264
H A Dev67-strcat.S3 * arch/alpha/lib/ev67-strcat.S
4 * 21264 version contributed by Rick Gorton <rick.gorton@alpha-processor.com>
9 * Compiler Writer's Guide for the Alpha 21264
/linux/net/sched/
H A Dsch_pie.c179 WRITE_ONCE(q->params.alpha, nla_get_u32(tb[TCA_PIE_ALPHA])); in pie_change()
309 u64 alpha, beta; in pie_calculate_probability() local
332 /* In the algorithm, alpha and beta are between 0 and 2 with typical in pie_calculate_probability()
333 * value for alpha as 0.125. In this implementation, we use values 0-32 in pie_calculate_probability()
334 * passed from user space to represent this. Also, alpha and beta have in pie_calculate_probability()
336 * probability. alpha/beta are updated locally below by scaling down in pie_calculate_probability()
339 alpha = ((u64)params->alpha * (MAX_PROB / PSCHED_TICKS_PER_SEC)) >> 4; in pie_calculate_probability()
342 /* We scale alpha and beta differently depending on how heavy the in pie_calculate_probability()
346 alpha >> in pie_calculate_probability()
[all...]
/linux/Documentation/gpu/amdgpu/display/
H A Dmpo-overview.rst81 * Only overlay planes have alpha blending support
140 (i.e., set the alpha to zero). The primary plane video will be visible through
153 (i.e., set the alpha to zero). The primary plane videos will be visible through
169 - ``kms_plane_alpha_blend@pipe-*-alpha-basic``
170 - ``kms_plane_alpha_blend@pipe-*-alpha-transparant-fb``
171 - ``kms_plane_alpha_blend@pipe-*-alpha-opaque-fb``
172 - ``kms_plane_alpha_blend@pipe-*-constant-alpha-min``
173 - ``kms_plane_alpha_blend@pipe-*-constant-alpha-mid``
174 - ``kms_plane_alpha_blend@pipe-*-constant-alpha-max``
/linux/samples/ftrace/
H A Dsample-trace-array.h30 * TRACE_SYSTEM is expected to be a C valid variable (alpha-numeric
38 * But the above is only needed if TRACE_SYSTEM is not alpha-numeric
40 * TRACE_SYSTEM. As TRACE_SYSTEM_VAR must be alpha-numeric, if
42 * only alpha-numeric and underscores.
/linux/include/uapi/asm-generic/
H A Dsignal-defs.h38 /* 0x00000008 used on alpha, mips, parisc */
39 /* 0x00000010 used on alpha, parisc */
40 /* 0x00000020 used on alpha, parisc, sparc */
41 /* 0x00000040 used on alpha, parisc */
/linux/drivers/gpu/drm/tegra/
H A Dplane.c554 unsigned int *alpha) in tegra_plane_format_get_alpha() argument
557 *alpha = opaque; in tegra_plane_format_get_alpha()
563 *alpha = WIN_COLOR_DEPTH_B5G5R5A1; in tegra_plane_format_get_alpha()
567 *alpha = WIN_COLOR_DEPTH_A1B5G5R5; in tegra_plane_format_get_alpha()
571 *alpha = WIN_COLOR_DEPTH_R8G8B8A8; in tegra_plane_format_get_alpha()
575 *alpha = WIN_COLOR_DEPTH_B8G8R8A8; in tegra_plane_format_get_alpha()
579 *alpha = opaque; in tegra_plane_format_get_alpha()
588 * be emulated using the alpha formats and alpha blending disabled.
685 state->blending[index].alpha = true; in tegra_plane_update_transparency()
687 state->blending[index].alpha = false; in tegra_plane_update_transparency()
/linux/Documentation/gpu/
H A Dafbc.rst74 instead use an equivalent format with alpha, setting all alpha bits to
76 which doesn't include alpha can be used, e.g. DRM_FORMAT_BGR888.
126 - 10-bit per component RGB, with 2-bit alpha
134 - 8-bit per component RGB, with 8-bit alpha
156 - 5-bit per component RGB, with 1-bit alpha
/linux/drivers/iio/afe/
H A Diio-rescale.c412 u32 alpha; in rescale_temp_sense_rtd_props() local
426 ret = device_property_read_u32(dev, "alpha-ppm-per-celsius", &alpha); in rescale_temp_sense_rtd_props()
428 dev_err(dev, "failed to read alpha-ppm-per-celsius: %d\n", in rescale_temp_sense_rtd_props()
439 tmp = r0 * iexc * alpha / 1000000; in rescale_temp_sense_rtd_props()
454 s32 alpha; in rescale_temp_transducer_props() local
459 ret = device_property_read_u32(dev, "alpha-ppm-per-celsius", &alpha); in rescale_temp_transducer_props()
461 dev_err(dev, "failed to read alpha-ppm-per-celsius: %d\n", ret); in rescale_temp_transducer_props()
466 rescale->denominator = alpha * sense; in rescale_temp_transducer_props()
/linux/Documentation/ABI/testing/
H A Dsysfs-devices-platform-sh_mobile_lcdc_fb8 Stores the alpha blending value for the overlay. Values range
10 the mode is not set to Alpha Blending.
22 - 0 - Alpha Blending
/linux/arch/alpha/include/asm/
H A Dwrperfmon.h3 * Definitions for use with the Alpha wrperfmon PAL call.
62 * The Alpha Architecure Handbook, vers. 4 (1998) appears to have a misprint
82 /* From the Alpha Architecture Reference Manual, 4th edn., 2002 */

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