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/linux/drivers/iio/adc/
H A Dsd_adc_modulator.c31 struct regulator *vref; member
39 if (priv->vref) in iio_sd_mod_enable()
40 return regulator_enable(priv->vref); in iio_sd_mod_enable()
49 if (priv->vref) in iio_sd_mod_disable()
50 regulator_disable(priv->vref); in iio_sd_mod_disable()
106 struct regulator *vref; in iio_sd_mod_probe() local
122 vref = devm_regulator_get_optional(dev, "vref"); in iio_sd_mod_probe()
123 if (IS_ERR(vref)) { in iio_sd_mod_probe()
124 if (PTR_ERR(vref) != -ENODEV) in iio_sd_mod_probe()
125 return dev_err_probe(dev, PTR_ERR(vref), "Failed to get vref\n"); in iio_sd_mod_probe()
[all …]
H A Dmax1241.c25 struct regulator *vref; member
94 vref_uV = regulator_get_voltage(adc->vref); in max1241_read_raw()
118 err = regulator_disable(adc->vref); in max1241_disable_vref_action()
120 dev_err(dev, "could not disable vref regulator.\n"); in max1241_disable_vref_action()
143 adc->vref = devm_regulator_get(dev, "vref"); in max1241_probe()
144 if (IS_ERR(adc->vref)) in max1241_probe()
145 return dev_err_probe(dev, PTR_ERR(adc->vref), in max1241_probe()
146 "failed to get vref regulator\n"); in max1241_probe()
148 ret = regulator_enable(adc->vref); in max1241_probe()
154 dev_err(dev, "could not set up vref regulator cleanup action\n"); in max1241_probe()
H A Dlpc18xx_adc.c42 struct regulator *vref; member
104 *val = regulator_get_voltage(adc->vref) / 1000; in lpc18xx_adc_read_raw()
124 static void lpc18xx_regulator_disable(void *vref) in lpc18xx_regulator_disable() argument
126 regulator_disable(vref); in lpc18xx_regulator_disable()
154 adc->vref = devm_regulator_get(&pdev->dev, "vref"); in lpc18xx_adc_probe()
155 if (IS_ERR(adc->vref)) in lpc18xx_adc_probe()
156 return dev_err_probe(&pdev->dev, PTR_ERR(adc->vref), in lpc18xx_adc_probe()
165 ret = regulator_enable(adc->vref); in lpc18xx_adc_probe()
171 ret = devm_add_action_or_reset(&pdev->dev, lpc18xx_regulator_disable, adc->vref); in lpc18xx_adc_probe()
H A Dmax11205.c34 struct regulator *vref; member
53 reg_mv = regulator_get_voltage(st->vref); in max11205_read_raw()
127 st->vref = devm_regulator_get(&spi->dev, "vref"); in max11205_probe()
128 if (IS_ERR(st->vref)) in max11205_probe()
129 return dev_err_probe(&spi->dev, PTR_ERR(st->vref), in max11205_probe()
130 "Failed to get vref regulator\n"); in max11205_probe()
132 ret = regulator_enable(st->vref); in max11205_probe()
136 ret = devm_add_action_or_reset(&spi->dev, max11205_reg_disable, st->vref); in max11205_probe()
H A Dad7949.c70 * @vref: regulator generating Vref
82 struct regulator *vref; member
239 ret = regulator_get_voltage(ad7949_adc->vref); in ad7949_spi_read_raw()
368 ad7949_adc->vref = devm_regulator_get_optional(dev, "vrefin"); in ad7949_spi_probe()
369 if (IS_ERR(ad7949_adc->vref)) { in ad7949_spi_probe()
370 ret = PTR_ERR(ad7949_adc->vref); in ad7949_spi_probe()
374 ad7949_adc->vref = devm_regulator_get_optional(dev, "vref"); in ad7949_spi_probe()
375 if (IS_ERR(ad7949_adc->vref)) { in ad7949_spi_probe()
376 ret = PTR_ERR(ad7949_adc->vref); in ad7949_spi_probe()
387 ret = regulator_enable(ad7949_adc->vref); in ad7949_spi_probe()
[all …]
H A Dad7091r-base.c104 if (st->vref) { in ad7091r_read_raw()
105 ret = regulator_get_voltage(st->vref); in ad7091r_read_raw()
293 regulator_disable(st->vref); in ad7091r_remove()
345 st->vref = devm_regulator_get_optional(dev, "vref"); in ad7091r_probe()
346 if (IS_ERR(st->vref)) { in ad7091r_probe()
347 if (PTR_ERR(st->vref) == -EPROBE_DEFER) in ad7091r_probe()
350 st->vref = NULL; in ad7091r_probe()
351 /* Enable internal vref */ in ad7091r_probe()
358 ret = regulator_enable(st->vref); in ad7091r_probe()
H A Dfsl-imx25-gcq.c42 struct regulator *vref[4]; member
181 if (priv->vref[refp]) in mx25_gcq_ext_regulator_setup()
184 ret = snprintf(reg_name, sizeof(reg_name), "vref-%s", in mx25_gcq_ext_regulator_setup()
189 priv->vref[refp] = devm_regulator_get_optional(dev, reg_name); in mx25_gcq_ext_regulator_setup()
190 if (IS_ERR(priv->vref[refp])) in mx25_gcq_ext_regulator_setup()
191 return dev_err_probe(dev, PTR_ERR(priv->vref[refp]), in mx25_gcq_ext_regulator_setup()
242 regulator_get_voltage(priv->vref[refp]); in mx25_gcq_setup_cfgs()
328 if (!priv->vref[i]) in mx25_gcq_probe()
331 ret = regulator_enable(priv->vref[i]); in mx25_gcq_probe()
336 priv->vref[i]); in mx25_gcq_probe()
H A Drockchip_saradc.c73 struct regulator *vref; member
352 regulator_disable(info->vref); in rockchip_saradc_regulator_disable()
413 regulator_unregister_notifier(info->vref, &info->nb); in rockchip_saradc_regulator_unreg_notifier()
475 info->vref = devm_regulator_get(&pdev->dev, "vref"); in rockchip_saradc_probe()
476 if (IS_ERR(info->vref)) in rockchip_saradc_probe()
477 return dev_err_probe(&pdev->dev, PTR_ERR(info->vref), in rockchip_saradc_probe()
492 ret = regulator_enable(info->vref); in rockchip_saradc_probe()
495 "failed to enable vref regulator\n"); in rockchip_saradc_probe()
503 ret = regulator_get_voltage(info->vref); in rockchip_saradc_probe()
534 ret = regulator_register_notifier(info->vref, &info->nb); in rockchip_saradc_probe()
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/linux/Documentation/devicetree/bindings/iio/dac/
H A Dmicrochip,mcp4725.yaml24 For the mcp4726 it will be used as the reference voltage if vref-supply
27 vref-supply:
29 Vref pin is used as a voltage reference when this supply is specified.
31 microchip,vref-buffered:
34 Enable buffering of the external Vref pin. This boolean is not valid
35 without the vref-supply. Quoting the datasheet: This is offered in
48 vref-supply: false
62 - vref-supply
67 - vref-supply
70 microchip,vref-buffered: false
H A Dlltc,ltc2632.yaml44 vref-supply:
47 only be set if there is an external reference voltage connected to the VREF
58 vref: regulator-vref {
60 regulator-name = "vref-ltc2632";
74 vref-supply = <&vref>;
H A Dadi,ad5064.yaml96 vref-supply: true
104 - # Shared external vref, no internal reference
123 vref-supply: true
129 - vref-supply
130 - # Shared external vref, internal reference available
183 vref-supply: true
206 vref-supply: false
227 vref-supply: false
242 vref-supply = <&dac_vref>;
H A Ddpot-dac.yaml15 divided voltage is provided by a vref regulator.
19 | vref |--' .---.
34 vref-supply:
50 - vref-supply
60 vref-supply = <&reg_3v3>;
H A Dadi,ad5449.yaml30 VREF-supply: true
50 VREF-supply: true
54 - VREF-supply
65 VREF-supply: false
82 VREF-supply = <&dac_ref>;
H A Dst,stm32-dac.yaml39 vref-supply:
40 description: Phandle to the vref input analog reference voltage.
59 - vref-supply
97 vref-supply = <&vref>;
/linux/Documentation/devicetree/bindings/sound/
H A Dnuvoton,nau8325.yaml22 nuvoton,vref-impedance-ohms:
24 The vref impedance to be used in ohms. Middle of voltage enables
25 Tie-Off selection options. Due to the high impedance of the VREF
30 nuvoton,dac-vref-microvolt:
32 The DAC vref to be used in voltage. DAC reference voltage setting. Can
75 nuvoton,vref-impedance-ohms = <125000>;
76 nuvoton,dac-vref-microvolt = <2880000>;
/linux/Documentation/devicetree/bindings/iio/adc/
H A Dadi,ad7476.yaml56 datasheets. If there is no separate vref-supply, then this is needed
63 vref-supply:
102 # Devices with a vref
115 vref-supply: true
118 vref-supply: false
119 # Devices with a vref where it is not optional
131 - vref-supply
172 vref-supply = <&adc_vref>;
H A Dti,adc12138.yaml34 vref-p-supply:
37 vref-n-supply:
40 (Note that this must not go below GND or exceed vref-p)
61 - vref-p-supply
81 vref-p-supply = <&ldo4_reg>;
H A Dadi,ad7192.yaml72 vref-supply:
73 description: VRef voltage supply
161 - vref-supply
214 vref-supply = <&vref>;
245 vref-supply = <&vref>;
/linux/drivers/input/touchscreen/
H A Dads7846.c179 #define ADS_PD10_REF_ON (2 << 0) /* vREF on + penirq */
180 #define ADS_PD10_ALL_ON (3 << 0) /* ADC + vREF on */
185 #define READ_12BIT_DFR(x, adc, vref) (ADS_START | ADS_A2A1A0_d_ ## x \ argument
187 (adc ? ADS_PD10_ADC_ON : 0) | (vref ? ADS_PD10_REF_ON : 0))
189 #define READ_Y(vref) (READ_12BIT_DFR(y, 1, vref)) argument
190 #define READ_Z1(vref) (READ_12BIT_DFR(z1, 1, vref)) argument
191 #define READ_Z2(vref) (READ_12BIT_DFR(z2, 1, vref)) argument
192 #define READ_X(vref) (READ_12BIT_DFR(x, 1, vref)) argument
196 * we leave both ADC and VREF powered
204 /* Order commands in the most optimal way to reduce Vref switching and
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/linux/drivers/iio/dac/
H A Dti-dac7311.c39 * @vref: regulator generating Vref
49 struct regulator *vref; member
179 ret = regulator_get_voltage(ti_dac->vref); in ti_dac_read_raw()
270 ti_dac->vref = devm_regulator_get(dev, "vref"); in ti_dac_probe()
271 if (IS_ERR(ti_dac->vref)) in ti_dac_probe()
272 return dev_err_probe(dev, PTR_ERR(ti_dac->vref), in ti_dac_probe()
275 ret = regulator_enable(ti_dac->vref); in ti_dac_probe()
293 regulator_disable(ti_dac->vref); in ti_dac_probe()
304 regulator_disable(ti_dac->vref); in ti_dac_remove()
H A Dti-dac082s085.c40 * @vref: regulator generating Vref
51 struct regulator *vref; member
200 ret = regulator_get_voltage(ti_dac->vref); in ti_dac_read_raw()
288 ti_dac->vref = devm_regulator_get(dev, "vref"); in ti_dac_probe()
289 if (IS_ERR(ti_dac->vref)) in ti_dac_probe()
290 return PTR_ERR(ti_dac->vref); in ti_dac_probe()
292 ret = regulator_enable(ti_dac->vref); in ti_dac_probe()
312 regulator_disable(ti_dac->vref); in ti_dac_probe()
323 regulator_disable(ti_dac->vref); in ti_dac_remove()
H A Dad3552r-common.c53 s64 vref, tmp, common, offset, gn, gp; in ad3552r_get_custom_range() local
60 vref = 2500; in ad3552r_get_custom_range()
68 *v_max = vref + tmp; in ad3552r_get_custom_range()
73 *v_min = vref - tmp; in ad3552r_get_custom_range()
117 voltage = devm_regulator_get_enable_read_voltage(dev, "vref"); in ad3552r_get_ref_voltage()
120 "Error getting vref voltage\n"); in ad3552r_get_ref_voltage()
123 if (device_property_read_bool(dev, "adi,vref-out-en")) in ad3552r_get_ref_voltage()
132 dev_warn(dev, "vref-supply must be 2.5V"); in ad3552r_get_ref_voltage()
/linux/Documentation/devicetree/bindings/input/touchscreen/
H A Dti,ads7843.yaml62 ti,keep-vref-on:
65 Set to keep Vref on for differential measurements as well.
105 ti,vref-delay-usecs:
108 Vref supply delay in usecs, 0 for external Vref.
110 ti,vref-mv:
113 The VREF voltage, in millivolts.
/linux/sound/soc/codecs/
H A Dinno_rk3036.c128 SND_SOC_DAPM_SUPPLY_S("DACL VREF", 2, INNO_R04,
130 SND_SOC_DAPM_SUPPLY_S("DACR VREF", 2, INNO_R04,
132 SND_SOC_DAPM_SUPPLY_S("DACL HiLo VREF", 3, INNO_R06,
134 SND_SOC_DAPM_SUPPLY_S("DACR HiLo VREF", 3, INNO_R06,
170 {"DACL VREF", NULL, "DAC PWR"},
171 {"DACR VREF", NULL, "DAC PWR"},
172 {"DACL HiLo VREF", NULL, "DAC PWR"},
173 {"DACR HiLo VREF", NULL, "DAC PWR"},
177 {"DACL", NULL, "DACL VREF"},
178 {"DACL", NULL, "DACL HiLo VREF"},
[all …]
/linux/drivers/hwmon/
H A Dadc128d818.c61 int vref; /* Reference voltage in mV */ member
157 val = DIV_ROUND_CLOSEST(data->in[index][nr] * data->vref, 4095); in adc128_in_show()
409 /* If external vref is selected, configure the chip to use it */ in adc128_init_client()
435 int err, vref; in adc128_probe() local
441 /* vref is optional. If specified, is used as chip reference voltage */ in adc128_probe()
442 vref = devm_regulator_get_enable_read_voltage(dev, "vref"); in adc128_probe()
443 if (vref == -ENODEV) { in adc128_probe()
445 data->vref = 2560; /* 2.56V, in mV */ in adc128_probe()
446 } else if (vref < 0) { in adc128_probe()
447 return vref; in adc128_probe()
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