| /linux/drivers/media/usb/gspca/ |
| H A D | autogain_functions.c | 3 * Functions for auto gain.
9 /* auto gain and exposure algorithm based on the knee algorithm described here:
12 Returns 0 if no changes were made, 1 if the gain and or exposure settings
22 s32 gain, orig_gain, exposure, orig_exposure; in gspca_expo_autogain() local
28 orig_gain = gain = v4l2_ctrl_g_ctrl(gspca_dev->gain); in gspca_expo_autogain()
40 if (gain > gain_knee) in gspca_expo_autogain()
41 gain--; in gspca_expo_autogain()
44 else if (gain > gspca_dev->gain->default_value) in gspca_expo_autogain()
45 gain--; in gspca_expo_autogain()
48 else if (gain > gspca_dev->gain->minimum) in gspca_expo_autogain()
[all …]
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| H A D | sonixb.c | 14 0x10 high nibble red gain low nibble blue gain
15 0x11 low nibble green gain
17 0x05 red gain 0-127
18 0x06 blue gain 0-127
19 0x07 green gain 0-127
115 if we adjust the gain or exposure we must ignore at least the next frame for
230 add a bit additional red gain and a lot additional blue gain, which
291 0x09 Blue Gain
292 0x0a Green1 Gain
293 0x0b Green2 Gain
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| H A D | touptek.c | 33 * Three gain stages
35 * 0x007F: low gain bits
36 * 0x0080: medium gain bit
37 * 0x0100: high gain bit
38 * gain = enable * (1 + regH) * (1 + regM) * z * regL
40 * Gain implementation
43 * Gain does not vary with resolution (checked 640x480 vs 1600x1200)
48 * Gain, GTOP, B, R, GBOT
71 * However, V4L expects a main gain channel + R and B balance
75 * Converted using gain model turns out to be quite linear:
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| /linux/sound/soc/codecs/ |
| H A D | es83xx-dsm-common.h | 158 /* Volume - Gain */
159 #define LINEIN_GAIN_0db 0x00 /* gain = 0db */
160 #define LINEIN_GAIN_3db 0x01 /* gain = +3db */
161 #define LINEIN_GAIN_6db 0x02 /* gain = +6db */
162 #define LINEIN_GAIN_9db 0x03 /* gain = +9db */
163 #define LINEIN_GAIN_12db 0x04 /* gain = +12db */
164 #define LINEIN_GAIN_15db 0x05 /* gain = +15db */
165 #define LINEIN_GAIN_18db 0x06 /* gain = +18db */
166 #define LINEIN_GAIN_21db 0x07 /* gain = +21db */
167 #define LINEIN_GAIN_24db 0x08 /* gain = +24db */
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| H A D | max9759.c | 22 unsigned int gain; member
48 ucontrol->value.integer.value[0] = priv->gain; in speaker_gain_control_get()
71 priv->gain = ucontrol->value.integer.value[0]; in speaker_gain_control_put()
75 speaker_gain_table[priv->gain][0]); in speaker_gain_control_put()
78 speaker_gain_table[priv->gain][1]); in speaker_gain_control_put()
108 SOC_SINGLE_EXT_TLV("Speaker Gain Volume", 0, 0, 3, 0,
162 priv->gpiod_gain = devm_gpiod_get_array(dev, "gain", GPIOD_OUT_HIGH); in max9759_probe()
165 "Failed to get 'gain' gpios"); in max9759_probe()
166 priv->gain = 0; in max9759_probe()
169 dev_err(dev, "Invalid 'gain' gpios count: %d", in max9759_probe()
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| /linux/sound/soc/mediatek/mt8186/ |
| H A D | mt8186-dai-hw-gain.c | 3 // MediaTek ALSA SoC Audio DAI HW Gain Control
12 #define HW_GAIN_1_EN_W_NAME "HW GAIN 1 Enable"
13 #define HW_GAIN_2_EN_W_NAME "HW GAIN 2 Enable"
58 /* let hw gain ramp up, set cur gain to 0 */ in mtk_hw_gain_event()
61 /* set target gain to 0 */ in mtk_hw_gain_event()
96 SND_SOC_DAPM_INPUT("HW Gain 1 Out Endpoint"),
97 SND_SOC_DAPM_INPUT("HW Gain 2 Out Endpoint"),
98 SND_SOC_DAPM_OUTPUT("HW Gain 1 In Endpoint"),
102 {"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH1"},
103 {"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH2"},
[all …]
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| /linux/drivers/iio/amplifiers/ |
| H A D | hmc425a.c | 3 * HMC425A and similar Gain Amplifiers
26 * The LTC6373 amplifier supports configuring gain using GPIO's with the following
30 * From here, it is observed that all values are multiples of the '2' gain setting,
56 int (*gain_dB_to_code)(int gain, int *code);
64 u32 gain; member
71 int gain; in gain_dB_to_code() local
74 gain = (val * 1000) - (val2 / 1000); in gain_dB_to_code()
76 gain = (val * 1000) + (val2 / 1000); in gain_dB_to_code()
78 if (gain > inf->gain_max || gain < inf->gain_min) in gain_dB_to_code()
83 return st->chip_info->gain_dB_to_code(gain, code); in gain_dB_to_code()
[all …]
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| H A D | ad8366.c | 3 * AD8366 and similar Gain Amplifiers
4 * This driver supports the following gain amplifiers:
5 * AD8366 Dual-Digital Variable Gain Amplifier (VGA)
6 * ADA4961 BiCMOS RF Digital Gain Amplifier (DGA)
7 * ADL5240 Digitally controlled variable gain amplifier (VGA)
120 int code, gain = 0; in ad8366_read_raw() local
129 gain = code * 253 + 4500; in ad8366_read_raw()
132 gain = 15000 - code * 1000; in ad8366_read_raw()
135 gain = 20000 - 31500 + code * 500; in ad8366_read_raw()
138 gain = -1 * code * 500; in ad8366_read_raw()
[all …]
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| H A D | Kconfig | 3 # Gain Amplifiers, etc.
10 tristate "Analog Devices AD8366 and similar Gain Amplifiers"
16 gain amplifiers. This driver supports the following gain amplifiers
18 AD8366 Dual-Digital Variable Gain Amplifier (VGA)
19 ADA4961 BiCMOS RF Digital Gain Amplifier (DGA)
20 ADL5240 Digitally controlled variable gain amplifier (VGA)
40 tristate "Analog Devices HMC425A and similar GPIO Gain Amplifiers"
44 gain amplifiers or step attenuators.
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| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | ext-ctrls-rf-tuner.rst | 50 Enables/disables LNA automatic gain control (AGC)
53 Enables/disables mixer automatic gain control (AGC)
56 Enables/disables IF automatic gain control (AGC)
61 LNA gain and the RF gain in this document is that the LNA gain is
62 integrated in the tuner chip while the RF gain is a separate chip.
63 There may be both RF and LNA gain controls in the same device. The
67 LNA (low noise amplifier) gain is first gain stage on the RF tuner
70 ``V4L2_CID_RF_TUNER_RF_GAIN`` to understand how RF gain and LNA gain
75 Mixer gain is second gain stage on the RF tuner signal path. It is
81 IF gain is last gain stage on the RF tuner signal path. It is
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| H A D | ext-ctrls-image-source.rst | 36 Analogue gain is gain affecting all colour components in the pixel
37 matrix. The gain operation is performed in the analogue domain
84 control taking 4 gain values, being the gains for each of the
91 The units for the gain values are linear, with the default value
92 representing a gain of exactly 1.0. For example, if this default value
94 a gain of exactly 1.5.
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| /linux/drivers/iio/test/ |
| H A D | iio-test-gts.c | 2 /* Unit tests for IIO light sensor gain-time-scale helpers
73 /* Keep the gain and time tables unsorted to test the sorting */
161 /* Ok times, negative gain */ in test_init_iio_gts_invalid()
167 /* gain * time overflow int */ in test_init_iio_gts_invalid()
186 * Meas time 100 => gain by time 2x in test_iio_gts_find_gain_for_scale_using_time()
187 * TEST_SCALE_8X matches total gain 8x in test_iio_gts_find_gain_for_scale_using_time()
196 * Meas time 200 => gain by time 4x in test_iio_gts_find_gain_for_scale_using_time()
197 * TEST_SCALE_256X matches total gain 256x in test_iio_gts_find_gain_for_scale_using_time()
203 /* Min time, Min gain */ in test_iio_gts_find_gain_for_scale_using_time()
209 /* Max time, Max gain */ in test_iio_gts_find_gain_for_scale_using_time()
[all …]
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| /linux/drivers/net/wireless/broadcom/b43/ |
| H A D | phy_n.h | 28 #define B43_NPHY_C1_CGAINI B43_PHY_N(0x01C) /* Core 1 compute gain info */
29 #define B43_NPHY_C1_CGAINI_GAINBKOFF 0x001F /* Gain backoff */
31 #define B43_NPHY_C1_CGAINI_CLIPGBKOFF 0x03E0 /* Clip gain backoff */
33 #define B43_NPHY_C1_CGAINI_GAINSTEP 0x1C00 /* Gain step */
36 #define B43_NPHY_C1_CCK_CGAINI B43_PHY_N(0x01D) /* Core 1 CCK compute gain info */
37 #define B43_NPHY_C1_CCK_CGAINI_GAINBKOFF 0x001F /* Gain backoff */
38 #define B43_NPHY_C1_CCK_CGAINI_CLIPGBKOFF 0x01E0 /* CCK barely clip gain backoff */
39 #define B43_NPHY_C1_MINMAX_GAIN B43_PHY_N(0x01E) /* Core 1 min/max gain */
40 #define B43_NPHY_C1_MINGAIN 0x00FF /* Minimum gain */
42 #define B43_NPHY_C1_MAXGAIN 0xFF00 /* Maximum gain */
[all …]
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| /linux/drivers/iio/accel/ |
| H A D | st_accel_core.c | 156 .gain = IIO_G_TO_M_S_2(1000),
161 .gain = IIO_G_TO_M_S_2(2000),
166 .gain = IIO_G_TO_M_S_2(4000),
171 .gain = IIO_G_TO_M_S_2(12000),
235 .gain = IIO_G_TO_M_S_2(1000),
240 .gain = IIO_G_TO_M_S_2(2000),
245 .gain = IIO_G_TO_M_S_2(3900),
319 .gain = IIO_G_TO_M_S_2(61),
324 .gain = IIO_G_TO_M_S_2(122),
329 .gain = IIO_G_TO_M_S_2(183),
[all …]
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| /linux/drivers/comedi/drivers/ |
| H A D | dt2811.c | 28 * - A/D ranges are not programmable but the gain is. The AI subdevice has
29 * a range_table containing all the possible analog input range/gain
31 * your board configuration and the desired gain to correctly convert
33 * gain.
57 #define DT2811_ADGCR_REG 0x01 /* r/w A/D Gain/Channel */
105 * The gain may be set to 1, 2, 4, or 8 (on the dt2811-pgh) or to
110 BIP_RANGE(5), /* range 0: gain=1 */
111 BIP_RANGE(2.5), /* range 1: gain=2 */
112 BIP_RANGE(1.25), /* range 2: gain=4 */
113 BIP_RANGE(0.625), /* range 3: gain=8 */
[all …]
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| /linux/drivers/iio/adc/ |
| H A D | ad7780.c | 65 unsigned int gain; member
122 *val = voltage_uv * st->gain; in ad7780_read_raw()
148 unsigned int full_scale, gain; in ad7780_write_raw() local
160 gain = DIV_ROUND_CLOSEST_ULL(vref, full_scale); in ad7780_write_raw()
161 gain = DIV_ROUND_CLOSEST(gain, val2); in ad7780_write_raw()
162 st->gain = gain; in ad7780_write_raw()
163 if (gain < AD7780_GAIN_MIDPOINT) in ad7780_write_raw()
164 gain = 0; in ad7780_write_raw()
166 gain = 1; in ad7780_write_raw()
167 gpiod_set_value(st->gain_gpio, gain); in ad7780_write_raw()
[all …]
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| /linux/Documentation/userspace-api/media/drivers/ |
| H A D | ccs.rst | 69 Analogue gain model
72 The CCS defines an analogue gain model where the gain can be calculated using
75 gain = m0 * x + c0 / (m1 * x + c1)
85 The analogue gain (``x`` in the formula) is controlled through
88 Alternate analogue gain model
91 The CCS defines another analogue gain model called alternate analogue gain. In
92 this case, the formula to calculate actual gain consists of linear and
95 gain = linear * 2 ^ exponent
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| /linux/drivers/iio/magnetometer/ |
| H A D | st_magn_core.c | 179 .gain = 1100,
185 .gain = 855,
191 .gain = 670,
197 .gain = 450,
203 .gain = 400,
209 .gain = 330,
215 .gain = 230,
258 .gain = 909,
264 .gain = 1169,
270 .gain = 1492,
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| /linux/Documentation/devicetree/bindings/iio/dac/ |
| H A D | adi,ad3552r.yaml | 99 adi,gain-offset:
100 description: Gain offset used in the above formula
105 adi,gain-scaling-p:
106 description: GainP = 1 / ( 2 ^ adi,gain-scaling-p)
110 adi,gain-scaling-n:
111 description: GainN = 1 / ( 2 ^ adi,gain-scaling-n)
119 - adi,gain-offset
120 - adi,gain-scaling-p
121 - adi,gain-scaling-n
240 adi,gain-offset = <5>;
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| /linux/sound/mips/ |
| H A D | ad1843.c | 37 ad1843_RIG = { 2, 0, 4 }, /* Right ADC Input Gain */
38 ad1843_RMGE = { 2, 4, 1 }, /* Right ADC Mic Gain Enable */
40 ad1843_LIG = { 2, 8, 4 }, /* Left ADC Input Gain */
41 ad1843_LMGE = { 2, 12, 1 }, /* Left ADC Mic Gain Enable */
43 ad1843_RD2M = { 3, 0, 5 }, /* Right DAC 2 Mix Gain/Atten */
45 ad1843_LD2M = { 3, 8, 5 }, /* Left DAC 2 Mix Gain/Atten */
47 ad1843_RX1M = { 4, 0, 5 }, /* Right Aux 1 Mix Gain/Atten */
49 ad1843_LX1M = { 4, 8, 5 }, /* Left Aux 1 Mix Gain/Atten */
51 ad1843_RX2M = { 5, 0, 5 }, /* Right Aux 2 Mix Gain/Atten */
53 ad1843_LX2M = { 5, 8, 5 }, /* Left Aux 2 Mix Gain/Atten */
[all …]
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| /linux/sound/spi/ |
| H A D | at73c213.h | 22 /* DAC left line in gain register */
26 /* DAC right line in gain register */
30 /* DAC Left Master Playback Gain Register */
34 /* DAC Right Master Playback Gain Register */
38 /* DAC Left Line Out Gain Register */
42 /* DAC Right Line Out Gain Register */
85 /* DAC Auxiliary Input Gain Control Register */
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| /linux/drivers/media/usb/gspca/stv06xx/ |
| H A D | stv06xx_pb0100.h | 41 #define PB_EXPGAIN 0x0e /* Exposure Gain Command */
70 #define PB_G1GAIN 0x2b /* Green 1 Gain */
71 #define PB_BGAIN 0x2c /* Blue Gain */
72 #define PB_RGAIN 0x2d /* Red Gain */
73 #define PB_G2GAIN 0x2e /* Green 2 Gain */
78 #define PB_ADCMAXGAIN 0x33 /* Maximum Gain */
79 #define PB_ADCMINGAIN 0x34 /* Minimum Gain */
80 #define PB_ADCGLOBALGAIN 0x35 /* Global Gain */
91 #define PB_R64 0x40 /* Red/Blue Gain */
92 #define PB_R65 0x41 /* Green 2/Green 1 Gain */
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| /linux/drivers/net/wireless/intel/iwlegacy/ |
| H A D | 4965.h | 218 * a txpower setting (amplifier gain is temperature dependent). The
295 * 3) Tx gain compensation to balance 2 transmitters for MIMO use.
321 * txpower gain tables):
375 * Driver should interpolate factory values for temperature, gain table
385 * factory-measured txpower. Using (interpolated) factory gain table idx
388 * txpower is reached. Each step in the gain table is 1/2 dB.
391 * is 13 dBm, add 6 steps to the factory gain idx to reduce txpower
401 * increase gain (lower gain table idx), and vice verse.
403 * Temperature affects gain differently for different channels:
420 * voltage, gain should be reduced (gain table idx increased) by:
[all …]
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| /linux/include/linux/ |
| H A D | atmel-isc-media.h | 13 * 4 gain controls, sliders, for each of the BAYER components: R, B, GR, GB.
30 * configure the gain/offsets directly.
40 /* Red component gain control */
42 /* Blue component gain control */
44 /* Green Red component gain control */
46 /* Green Blue gain control */
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| /linux/include/linux/mfd/ |
| H A D | ac100.h | 84 /* ADC digital audio processing (high pass filter & auto gain control */
116 #define AC100_DAC_DAP_H_G_D_T_C 0xa7 /* High Gain Delay Time Coef */
117 #define AC100_DAC_DAP_L_G_D_T_C 0xa8 /* Low Gain Delay Time Coef */
118 #define AC100_DAC_DAP_H_G_A_T_C 0xa9 /* High Gain Attack Time Coef */
119 #define AC100_DAC_DAP_L_G_A_T_C 0xaa /* Low Gain Attack Time Coef */
122 #define AC100_DAC_DAP_H_G_K 0xad /* High Gain K parameter */
123 #define AC100_DAC_DAP_L_G_K 0xae /* Low Gain K parameter */
124 #define AC100_DAC_DAP_H_G_OFF 0xaf /* High Gain offset */
125 #define AC100_DAC_DAP_L_G_OFF 0xb0 /* Low Gain offset */
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