| /Linux-v5.15/Documentation/trace/ |
| D | osnoise-tracer.rst | 6 Noise (*osnoise*) refers to the interference experienced by an application
8 NMIs, IRQs, SoftIRQs, and any other system thread can cause noise to the
9 system. Moreover, hardware-related jobs can also cause noise, for example,
13 source of noise: *hardware noise*.
36 events. When a noise happens without any interference from the operating
37 system level, the hardware noise counter increases, pointing to a
38 hardware-related noise. In this way, osnoise can account for any
40 prints the sum of all noise, the max single noise, the percentage of CPU
41 available for the thread, and the counters for the noise sources.
64 …# |||| RUNTIME NOISE % OF CPU NOISE +-------…
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| /Linux-v5.15/drivers/staging/rtl8723bs/hal/ |
| D | odm_NoiseMonitor.c | 10 /* This function is for inband noise test utility only */
11 /* To obtain the inband noise level(dbm), do the following. */
52 /* Step 3. Get noise power level */ in odm_InbandNoise_Monitor_NSeries()
60 /* Read Noise Floor Report */ in odm_InbandNoise_Monitor_NSeries()
106 pDM_Odm->noise_level.noise[RF_PATH_A] = -110 + reg_c50 + noise_data.sum[RF_PATH_A]; in odm_InbandNoise_Monitor_NSeries()
107 pDM_Odm->noise_level.noise_all += pDM_Odm->noise_level.noise[RF_PATH_A]; in odm_InbandNoise_Monitor_NSeries()
112 pDM_Odm->noise_level.noise[RF_PATH_B] = -110 + reg_c58 + noise_data.sum[RF_PATH_B]; in odm_InbandNoise_Monitor_NSeries()
113 pDM_Odm->noise_level.noise_all += pDM_Odm->noise_level.noise[RF_PATH_B]; in odm_InbandNoise_Monitor_NSeries()
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| /Linux-v5.15/drivers/staging/media/atomisp/pci/isp/kernels/ynr/ynr_1.0/ |
| D | ia_css_ynr_types.h | 20 * CSS-API header file for Noise Reduction (BNR) and YCC Noise Reduction (YNR,CNR).
23 /* Configuration used by Bayer Noise Reduction (BNR) and
24 * YCC Noise Reduction (YNR,CNR).
32 ia_css_u0_16 bnr_gain; /** Strength of noise reduction (BNR).
35 ia_css_u0_16 ynr_gain; /** Strength of noise reduction (YNR).
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| /Linux-v5.15/kernel/trace/ |
| D | trace_osnoise.c | 3 * OS Noise Tracer: computes the OS Noise suffered by a running thread.
199 u64 noise; /* noise */ member
200 u64 max_sample; /* max single noise sample */
280 seq_puts(s, " NOISE %% OF CPU NOISE +-----------------------------+\n"); in print_osnoise_headers()
304 seq_puts(s, " NOISE %% OF CPU NOISE +-----------------------------+\n"); in print_osnoise_headers()
341 entry->noise = sample->noise; in trace_osnoise_sample()
664 * occurrence, compute the noise caused by the NMI, and to remove the noise
727 * Computes the duration of the IRQ noise, and trace it. Also discounts the
728 * interference from other sources of noise could be currently being accounted.
858 * Computes the duration of the softirq noise, and trace it. Also discounts the
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| /Linux-v5.15/drivers/staging/media/atomisp/pci/isp/kernels/fpn/fpn_1.0/ |
| D | ia_css_fpn_types.h | 20 * CSS-API header file for Fixed Pattern Noise parameters.
23 /* Fixed Pattern Noise table.
25 * This contains the fixed patterns noise values
37 s16 *data; /** Table content (fixed patterns noise).
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| /Linux-v5.15/Documentation/sound/soc/ |
| D | pops-clicks.rst | 8 powered up and causes a popping noise on the speakers).
48 Zipper Noise
50 An unwanted zipper noise can occur within the audio playback or capture stream
51 when a volume control is changed near its maximum gain value. The zipper noise
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| /Linux-v5.15/include/linux/input/ |
| D | cma3000.h | 26 * @fuzz_x: Noise on X Axis
27 * @fuzz_y: Noise on Y Axis
28 * @fuzz_z: Noise on Z Axis
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| /Linux-v5.15/drivers/net/wireless/ath/ath9k/ |
| D | calib.c | 75 s8 noise = ATH_DEFAULT_NOISE_FLOOR; in ath9k_hw_getchan_noise() local
81 noise += delta; in ath9k_hw_getchan_noise()
83 return noise; in ath9k_hw_getchan_noise()
133 * Normally we limit the average noise floor by the in ath9k_hw_update_nfcal_hist_buffer()
145 * If the noise floor seems normal for all chains, assume that in ath9k_hw_update_nfcal_hist_buffer()
272 /* Try to get calibrated noise floor value */ in ath9k_hw_loadnf()
352 * of next noise floor calibration the baseband does. in ath9k_hw_loadnf()
425 "noise floor failed detected; detected %d, threshold %d\n", in ath9k_hw_getnf()
438 ah->noise = ath9k_hw_getchan_noise(ah, chan, chan->noisefloor); in ath9k_hw_getnf()
473 * Triggering a noise floor calibration at this point helps the in ath9k_hw_bstuck_nfcal()
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| /Linux-v5.15/Documentation/admin-guide/media/ |
| D | ipu3.rst | 244 high quality images. Besides, "STILL" mode need XNR3 to do noise reduction,
461 g [label="Bayer Noise Reduction"]
468 n [label="Chromatic Noise Reduction"]
502 BNR Bayer noise reduction block removes image noise by
505 ANR Advanced Noise Reduction is a block based algorithm
506 that performs noise reduction in the Bayer domain. The
531 CHNR Chroma noise reduction
533 performs noise reduction by cleaning the high
534 frequency noise.
538 XNR3 eXtreme Noise Reduction V3 is the third revision of
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| /Linux-v5.15/drivers/staging/media/ipu3/include/uapi/ |
| D | intel-ipu3.h | 586 /* Bayer Noise Reduction related structs */
626 * struct ipu3_uapi_bnr_static_config_thr_coeffs_config - Noise model
627 * coefficients that controls noise threshold
643 * Threshold used to distinguish between noise and details.
662 * Parameters for noise model (NM) adaptation of BNR due to shading correction.
706 * dependent on de-noise threshold calculated by algorithm.
742 * beta and gamma parameter define the strength of the noise removal filter.
755 * @bnr_enable: Bayer noise removal enable control, 0 - disable, 1 - enable.
808 * @dn_detect_ctrl: detect and remove noise.
1847 /* Chroma Noise Reduction */
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| /Linux-v5.15/drivers/misc/echo/ |
| D | echo.h | 52 to adapt best to the strongest parts of a signal. If the signal is white noise,
69 If the adaption is performed while transmitting noise (or something fairly
70 noise like, such as voice) the adaption works very well. If the adaption is
86 noise may dominate and disturb the adaption process. If we can ensure that the
166 /* Parameters for the optional Hoth noise generator */
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| /Linux-v5.15/include/linux/mfd/ |
| D | ac100.h | 99 #define AC100_ADC_DAP_N_TH 0x8e /* Noise Threshold */
100 #define AC100_ADC_DAP_L_H_N_A_C 0x8f /* Left High Noise Avg. Coef */
101 #define AC100_ADC_DAP_L_L_N_A_C 0x90 /* Left Low Noise Avg. Coef */
102 #define AC100_ADC_DAP_R_H_N_A_C 0x91 /* Right High Noise Avg. Coef */
103 #define AC100_ADC_DAP_R_L_N_A_C 0x92 /* Right Low Noise Avg. Coef */
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| /Linux-v5.15/drivers/media/pci/cx88/ |
| D | cx88-dsp.c | 142 /* The last 192 samples are enough for noise detection */ in noise_magnitude()
159 s32 carrier, stereo, dual, noise; in detect_a2_a2m_eiaj() local
189 noise = noise_magnitude(x, N, FREQ_NOISE_START, FREQ_NOISE_END); in detect_a2_a2m_eiaj()
192 "detect a2/a2m/eiaj: carrier=%d, stereo=%d, dual=%d, noise=%d\n", in detect_a2_a2m_eiaj()
193 carrier, stereo, dual, noise); in detect_a2_a2m_eiaj()
208 * so we probably don't need noise detection in detect_a2_a2m_eiaj()
216 (noise < 10) && in detect_a2_a2m_eiaj()
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| /Linux-v5.15/include/uapi/linux/ |
| D | rkisp1-config.h | 595 * @thres: threshold used for minimizing the influence of noise
609 * @RKISP1_CIF_ISP_DPF_GAIN_USAGE_NF_GAINS: use only the noise function gains from
612 * @RKISP1_CIF_ISP_DPF_GAIN_USAGE_NF_LSC_GAINS: use the noise function gains and the
641 * enum rkisp1_cif_isp_dpf_nll_scale_mode - dpf noise level scale mode
651 * struct rkisp1_cif_isp_dpf_nll - Noise level lookup
653 * @coeff: Noise level Lookup coefficient
654 * @scale_mode: dpf noise level scale mode (from enum rkisp1_cif_isp_dpf_nll_scale_mode)
691 * struct rkisp1_cif_isp_dpf_gain - Noise function Configuration
694 * @nf_r_gain: Noise function Gain that replaces the AWB gain for red pixels
695 * @nf_b_gain: Noise function Gain that replaces the AWB gain for blue pixels
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| /Linux-v5.15/drivers/media/dvb-frontends/ |
| D | lgdt330x.c | 496 u32 noise; /* noise value */ in lgdt3302_read_snr() local
505 noise = ((buf[0] & 7) << 16) | (buf[1] << 8) | buf[2]; in lgdt3302_read_snr()
510 noise = ((buf[0] & 7 << 3) << 13) | (buf[3] << 8) | buf[4]; in lgdt3302_read_snr()
517 noise = ((buf[0] & 3) << 8) | buf[1]; in lgdt3302_read_snr()
531 state->snr = calculate_snr(noise, c); in lgdt3302_read_snr()
533 dprintk(state, "noise = 0x%08x, snr = %d.%02d dB\n", noise, in lgdt3302_read_snr()
543 u32 noise; /* noise value */ in lgdt3303_read_snr() local
552 noise = ((buf[0] & 0x78) << 13) | (buf[1] << 8) | buf[2]; in lgdt3303_read_snr()
557 noise = ((buf[0] & 7) << 16) | (buf[3] << 8) | buf[4]; in lgdt3303_read_snr()
564 noise = (buf[0] << 8) | buf[1]; in lgdt3303_read_snr()
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| D | or51132.c | 229 /* Auto CH, Auto NTSC rej, MPEGser, MPEG2tr, phase noise-high */ in or51132_setmode()
237 Auto-deinterleave; MPEGser, MPEG2tr, phase noise-high in or51132_setmode()
461 int noise, reg; in or51132_read_snr() local
467 noise = or51132_readreg(state, 0x02); in or51132_read_snr()
468 if (noise < 0) { in or51132_read_snr()
472 dprintk("read_snr noise (%d)\n", noise); in or51132_read_snr()
500 /* Calculate SNR using noise, c, and NTSC rejection correction */ in or51132_read_snr()
501 state->snr = calculate_snr(noise, c) - usK; in or51132_read_snr()
504 dprintk("%s: noise = 0x%08x, snr = %d.%02d dB\n", __func__, noise, in or51132_read_snr()
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| /Linux-v5.15/drivers/net/wireless/ath/ |
| D | spectral_common.h | 57 s8 noise; member
101 __be16 noise; member
125 __be32 noise; member
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| /Linux-v5.15/drivers/staging/media/atomisp/pci/ |
| D | atomisp_compat_ioctl32.h | 191 compat_uptr_t tnr_config; /* Temporal Noise Reduction */
193 compat_uptr_t ynr_config; /* Y(Luma) Noise Reduction */
196 compat_uptr_t cnr_config; /* Chroma Noise Reduction */
205 compat_uptr_t nr_config; /* Noise Reduction config */
209 compat_uptr_t anr_config; /* Advanced Noise Reduction */
211 compat_uptr_t xnr_config; /* eXtra Noise Reduction */
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| /Linux-v5.15/drivers/staging/media/atomisp/pci/isp/kernels/tnr/tnr3/ |
| D | ia_css_tnr3_types.h | 20 * CSS-API header file for Temporal Noise Reduction v3 (TNR3) kernel
30 /* Temporal Noise Reduction v3 (TNR3) configuration.
44 * 4. Selection of the reference frame buffer to be used for noise reduction.
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| /Linux-v5.15/Documentation/devicetree/bindings/input/touchscreen/ |
| D | touchscreen.yaml | 41 description: horizontal noise value of the absolute input device (in pixels)
45 description: vertical noise value of the absolute input device (in pixels)
49 description: pressure noise value of the absolute input device (arbitrary
|
| /Linux-v5.15/drivers/net/wireless/ath/ath5k/ |
| D | ani.c | 27 * Adaptive Noise Immunity (ANI) controls five noise immunity parameters
33 * - "noise immunity"
61 * ath5k_ani_set_noise_immunity_level() - Set noise immunity level
86 ATH5K_ERR(ah, "noise immunity level %d out of range", in ath5k_ani_set_noise_immunity_level()
213 * ath5k_ani_raise_immunity() - Increase noise immunity
219 * Try to raise noise immunity (=decrease sensitivity) in several steps
231 /* first: raise noise immunity */ in ath5k_ani_raise_immunity()
302 * ath5k_ani_lower_immunity() - Decrease noise immunity
306 * Try to lower noise immunity (=increase sensitivity) in several steps
357 /* finally, reduce noise immunity */ in ath5k_ani_lower_immunity()
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| /Linux-v5.15/sound/soc/codecs/ |
| D | wm8997.c | 250 ARIZONA_MIXER_CONTROLS("Noise", ARIZONA_NOISEMIX_INPUT_1_SOURCE),
252 SOC_SINGLE_TLV("Noise Generator Volume", ARIZONA_COMFORT_NOISE_GENERATOR,
296 SOC_SINGLE("Noise Gate Switch", ARIZONA_NOISE_GATE_CONTROL,
298 SOC_SINGLE_TLV("Noise Gate Threshold Volume", ARIZONA_NOISE_GATE_CONTROL,
300 SOC_ENUM("Noise Gate Hold", arizona_ng_hold),
345 ARIZONA_MIXER_ENUMS(Noise, ARIZONA_NOISEMIX_INPUT_1_SOURCE);
427 SND_SOC_DAPM_SIGGEN("NOISE"),
459 SND_SOC_DAPM_PGA("Noise Generator", ARIZONA_COMFORT_NOISE_GENERATOR,
644 ARIZONA_MIXER_WIDGETS(Noise, "Noise"),
702 { name, "Noise Generator", "Noise Generator" }, \
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| /Linux-v5.15/Documentation/input/devices/ |
| D | cma3000_d0x.rst | 50 Noise on X Axis
53 Noise on Y Axis
56 Noise on Z Axis
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| /Linux-v5.15/drivers/staging/media/atomisp/pci/isp/kernels/anr/anr_2/ |
| D | ia_css_anr2_types.h | 20 * CSS-API header file for Advanced Noise Reduction kernel v2
27 /* Advanced Noise Reduction (ANR) thresholds */
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| /Linux-v5.15/drivers/net/wireless/intel/iwlwifi/dvm/ |
| D | dev.h | 45 /* Default noise level to report when noise measurement is not available.
48 * 2) Scanning (noise measurement does not apply to associated channel)
49 * Use default noise value of -127 ... this is below the range of measurable
52 * noise info (e.g. averaging might be done in app); measured dBm values are
263 /* Sensitivity and chain noise calibration */
342 /* Chain noise (differential Rx gain) calib data */
575 * @chain_noise_scale: default chain noise scale used for gain computation
796 * chain noise reset and gain commands are the
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