| /Linux-v5.10/drivers/video/backlight/ |
| D | ktd253-backlight.c | 40 int brightness = backlight_get_brightness(bl); in ktd253_backlight_update_status() local
45 dev_dbg(ktd253->dev, "new brightness/ratio: %d/32\n", brightness); in ktd253_backlight_update_status()
47 target_ratio = brightness; in ktd253_backlight_update_status()
114 u32 brightness; in ktd253_backlight_probe() local
122 ret = device_property_read_u32(dev, "max-brightness", &max_brightness); in ktd253_backlight_probe()
126 /* Clamp brightness to hardware max */ in ktd253_backlight_probe()
127 dev_err(dev, "illegal max brightness specified\n"); in ktd253_backlight_probe()
131 ret = device_property_read_u32(dev, "default-brightness", &brightness); in ktd253_backlight_probe()
133 brightness = KTD253_DEFAULT_RATIO; in ktd253_backlight_probe()
134 if (brightness > max_brightness) { in ktd253_backlight_probe()
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| D | aat2870_bl.c | 25 int brightness; /* current brightness */ member
29 int brightness) in aat2870_brightness() argument
34 val = brightness * (aat2870_bl->max_current - 1); in aat2870_brightness()
62 int brightness = bd->props.brightness; in aat2870_bl_update_status() local
65 if ((brightness < 0) || (bd->props.max_brightness < brightness)) { in aat2870_bl_update_status()
66 dev_err(&bd->dev, "invalid brightness, %d\n", brightness); in aat2870_bl_update_status()
70 dev_dbg(&bd->dev, "brightness=%d, power=%d, state=%d\n", in aat2870_bl_update_status()
71 bd->props.brightness, bd->props.power, bd->props.state); in aat2870_bl_update_status()
76 brightness = 0; in aat2870_bl_update_status()
79 (u8)aat2870_brightness(aat2870_bl, brightness)); in aat2870_bl_update_status()
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| D | pcf50633-backlight.c | 22 unsigned int brightness; member
29 * Update the brightness limit for the pc50633 backlight. The actual brightness
34 * @limit: The brightness limit. Valid values are 0-63
58 else if (bl->props.brightness < pcf_bl->brightness_limit) in pcf50633_bl_update_status()
59 new_brightness = bl->props.brightness; in pcf50633_bl_update_status()
64 if (pcf_bl->brightness == new_brightness) in pcf50633_bl_update_status()
70 if (!pcf_bl->brightness) in pcf50633_bl_update_status()
76 pcf_bl->brightness = new_brightness; in pcf50633_bl_update_status()
85 return pcf_bl->brightness; in pcf50633_bl_get_brightness()
112 bl_props.brightness = pdata->default_brightness; in pcf50633_bl_probe()
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| D | lm3630a_bl.c | 103 /* set brightness A and B */ in lm3630a_chip_init()
182 /* update and get brightness */
191 lm3630a_pwm_ctrl(pchip, bl->props.brightness, in lm3630a_bank_a_update_status()
193 return bl->props.brightness; in lm3630a_bank_a_update_status()
201 /* minimum brightness is 0x04 */ in lm3630a_bank_a_update_status()
202 ret = lm3630a_write(pchip, REG_BRT_A, bl->props.brightness); in lm3630a_bank_a_update_status()
203 if (bl->props.brightness < 0x4) in lm3630a_bank_a_update_status()
214 return bl->props.brightness; in lm3630a_bank_a_update_status()
219 int brightness, rval; in lm3630a_bank_a_get_brightness() local
227 brightness = (rval & 0x01) << 8; in lm3630a_bank_a_get_brightness()
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| D | lm3639_bl.c | 65 /* init brightness */ in lm3639_chip_init()
93 /* update and get brightness */
111 pdata->pwm_set_intensity(bl->props.brightness, in lm3639_bled_update_status()
116 return bl->props.brightness; in lm3639_bled_update_status()
120 ret = regmap_write(pchip->regmap, REG_BL_CONF_4, bl->props.brightness); in lm3639_bled_update_status()
123 ret = regmap_write(pchip->regmap, REG_BL_CONF_3, bl->props.brightness); in lm3639_bled_update_status()
127 if (!bl->props.brightness) in lm3639_bled_update_status()
134 return bl->props.brightness; in lm3639_bled_update_status()
137 return bl->props.brightness; in lm3639_bled_update_status()
149 bl->props.brightness = pdata->pwm_get_intensity(); in lm3639_bled_get_brightness()
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| D | as3711_bl.c | 29 int brightness; member
52 unsigned int brightness) in as3711_set_brightness_auto_i() argument
62 brightness); in as3711_set_brightness_auto_i()
65 brightness); in as3711_set_brightness_auto_i()
68 brightness); in as3711_set_brightness_auto_i()
74 unsigned int brightness, in as3711_set_brightness_v() argument
77 if (brightness > 31) in as3711_set_brightness_v()
81 brightness << 4); in as3711_set_brightness_v()
100 * the brightness adjustment procedure.
107 int brightness; in as3711_bl_update_status() local
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| D | da9052_bl.c | 40 uint brightness; member
72 if (wleds->brightness) { in da9052_adjust_wled_brightness()
74 wleds->brightness); in da9052_adjust_wled_brightness()
84 int brightness = bl->props.brightness; in da9052_backlight_update_status() local
87 wleds->brightness = brightness; in da9052_backlight_update_status()
97 return wleds->brightness; in da9052_backlight_get_brightness()
116 wleds->brightness = 0; in da9052_backlight_probe()
132 bl->props.brightness = 0; in da9052_backlight_probe()
143 wleds->brightness = 0; in da9052_backlight_remove()
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| D | pwm_bl.c | 35 int brightness);
37 int brightness);
89 static int compute_duty_cycle(struct pwm_bl_data *pb, int brightness) in compute_duty_cycle() argument
98 duty_cycle = pb->levels[brightness]; in compute_duty_cycle()
100 duty_cycle = brightness; in compute_duty_cycle()
111 int brightness = backlight_get_brightness(bl); in pwm_backlight_update_status() local
115 brightness = pb->notify(pb->dev, brightness); in pwm_backlight_update_status()
117 if (brightness > 0) { in pwm_backlight_update_status()
119 state.duty_cycle = compute_duty_cycle(pb, brightness); in pwm_backlight_update_status()
127 pb->notify_after(pb->dev, brightness); in pwm_backlight_update_status()
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| D | pandora_bl.c | 42 int brightness = bl->props.brightness; in pandora_backlight_update_status() local
47 brightness = 0; in pandora_backlight_update_status()
49 brightness = 0; in pandora_backlight_update_status()
51 brightness = 0; in pandora_backlight_update_status()
53 if ((unsigned int)brightness > MAX_USER_VALUE) in pandora_backlight_update_status()
54 brightness = MAX_USER_VALUE; in pandora_backlight_update_status()
56 if (brightness == 0) { in pandora_backlight_update_status()
93 twl_i2c_write_u8(TWL_MODULE_PWM, MIN_VALUE + brightness, TWL_PWM0_OFF); in pandora_backlight_update_status()
96 if (brightness != 0) in pandora_backlight_update_status()
138 bl->props.brightness = MAX_USER_VALUE; in pandora_backlight_probe()
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| /Linux-v5.10/arch/powerpc/platforms/powermac/ |
| D | backlight.c | 37 * in-kernel control of the brightness needs to be disabled. This should
109 int brightness; in pmac_backlight_key_worker() local
113 brightness = props->brightness + in pmac_backlight_key_worker()
117 if (brightness < 0) in pmac_backlight_key_worker()
118 brightness = 0; in pmac_backlight_key_worker()
119 else if (brightness > props->max_brightness) in pmac_backlight_key_worker()
120 brightness = props->max_brightness; in pmac_backlight_key_worker()
122 props->brightness = brightness; in pmac_backlight_key_worker()
141 static int __pmac_backlight_set_legacy_brightness(int brightness) in __pmac_backlight_set_legacy_brightness() argument
150 props->brightness = brightness * in __pmac_backlight_set_legacy_brightness()
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| /Linux-v5.10/Documentation/devicetree/bindings/leds/backlight/ |
| D | pwm-backlight.yaml | 42 brightness-levels:
44 Array of distinct brightness levels. Typically these are in the range
45 from 0 to 255, but any range starting at 0 will do. The actual brightness
51 default-brightness-level:
53 The default brightness level (index into the array defined by the
54 "brightness-levels" property).
59 Number of interpolated steps between each value of brightness-levels
61 having to list out every possible value in the brightness-level array.
65 default-brightness-level: [brightness-levels]
66 num-interpolated-steps: [brightness-levels]
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| D | led-backlight.yaml | 27 brightness-levels:
29 Array of distinct brightness levels. The levels must be in the range
31 backlight brightness level into a LED brightness level. If it is not
35 default-brightness-level:
37 The default brightness level (index into the array defined by the
38 "brightness-levels" property).
53 brightness-levels = <0 4 8 16 32 64 128 255>;
54 default-brightness-level = <6>;
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| D | common.yaml | 20 default-brightness:
22 The default brightness that should be applied to the LED by the operating
23 system on start-up. The brightness should not exceed the brightness the
27 max-brightness:
29 Normally the maximum brightness is determined by the hardware and this
31 on the brightness apart from what the driver says, as it could happen
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| /Linux-v5.10/Documentation/leds/ |
| D | leds-lm3556.rst | 26 LM3556 Flash can be controlled through sys/class/leds/flash/brightness file
28 * if STROBE pin is enabled, below example control brightness only, and
35 #echo 0 > sys/class/leds/flash/brightness
39 #echo 1 > sys/class/leds/flash/brightness
45 #echo 16 > sys/class/leds/flash/brightness
54 LM3556 torch can be controlled through sys/class/leds/torch/brightness file.
55 * if TORCH pin is enabled, below example control brightness only,
62 #echo 0 > sys/class/leds/torch/brightness
66 #echo 1 > sys/class/leds/torch/brightness
72 #echo 8 > sys/class/leds/torch/brightness
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| D | leds-class-multicolor.rst | 12 via brightness file.
35 -rw-r--r-- 1 root root 4096 Oct 19 16:16 brightness
40 Multicolor Class Brightness Control
42 The brightness level for each LED is calculated based on the color LED
44 the requested brightness.
46 led_brightness = brightness * multi_intensity/max_brightness
49 A user first writes the multi_intensity file with the brightness levels
68 The user can control the brightness of that multicolor LED group by writing the
69 global 'brightness' control. Assuming a max_brightness of 255 the user
71 128 to the global brightness file then the values written to each LED will be
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| /Linux-v5.10/Documentation/ABI/testing/ |
| D | sysfs-class-backlight | 6 Description of the scale of the brightness curve.
8 The human eye senses brightness approximately logarithmically,
9 hence linear changes in brightness are perceived as being
10 non-linear. To achieve a linear perception of brightness changes
12 backlights with a linear brightness curve.
17 The scale of the brightness curve is unknown.
20 The brightness changes linearly with each step. Brightness
25 The brightness changes non-linearly with each step. Brightness
43 brightness).
56 (RW) Read or write the specific brightness level at which the
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| D | sysfs-class-led | 1 What: /sys/class/leds/<led>/brightness
6 Set the brightness of the LED.
8 Most LEDs don't have hardware brightness support, so will
9 just be turned on for non-zero brightness settings.
20 led_brightness = brightness * multi_intensity/max_brightness
31 top brightness trigger is going to use.
40 Maximum brightness level for this LED, default is 255 (LED_FULL).
42 If the LED does not support different brightness levels, this
49 Last hardware set brightness level for this LED. Some LEDs
55 the brightness.
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| /Linux-v5.10/drivers/hid/ |
| D | hid-lg-g15.c | 46 enum led_brightness brightness; member
54 /* Protects the transfer_buf and led brightness */
74 hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret); in lg_g15_update_led_brightness()
78 g15->leds[LG_G15_KBD_BRIGHTNESS].brightness = g15->transfer_buf[1]; in lg_g15_update_led_brightness()
79 g15->leds[LG_G15_LCD_BRIGHTNESS].brightness = g15->transfer_buf[2]; in lg_g15_update_led_brightness()
81 g15->leds[LG_G15_MACRO_PRESET1].brightness = in lg_g15_update_led_brightness()
83 g15->leds[LG_G15_MACRO_PRESET2].brightness = in lg_g15_update_led_brightness()
85 g15->leds[LG_G15_MACRO_PRESET3].brightness = in lg_g15_update_led_brightness()
87 g15->leds[LG_G15_MACRO_RECORD].brightness = in lg_g15_update_led_brightness()
98 enum led_brightness brightness; in lg_g15_led_get() local
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| /Linux-v5.10/Documentation/devicetree/bindings/leds/ |
| D | leds-trigger-pattern.txt | 3 The pattern is given by a series of tuples, of brightness and duration (ms).
4 The LED is expected to traverse the series and each brightness value for the
5 specified duration. Duration of 0 means brightness should immediately change to
10 change of brightness, i.e. the subsequent brightness will be applied without
22 LED brightness
31 2. To make the LED go instantly from one brightness value to another, we should
32 use zero-time lengths (the brightness must be same as the previous tuple's). So
39 It will make the LED stay off for one second, then stay at max brightness for
42 LED brightness
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| D | leds-netxbig.txt | 18 - bright-addr: Brightness register address on gpio-ext bus.
19 - max-brightness: Maximum brightness value.
43 max-brightness = <7>;
52 max-brightness = <7>;
62 max-brightness = <7>;
71 max-brightness = <7>;
81 max-brightness = <7>;
90 max-brightness = <7>;
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| /Linux-v5.10/drivers/leds/ |
| D | led-core.c | 65 unsigned long brightness; in led_timer_function() local
80 brightness = led_get_brightness(led_cdev); in led_timer_function()
81 if (!brightness) { in led_timer_function()
85 brightness = led_cdev->new_blink_brightness; in led_timer_function()
87 brightness = led_cdev->blink_brightness; in led_timer_function()
90 /* Store the current brightness value to be able in led_timer_function()
93 led_cdev->blink_brightness = brightness; in led_timer_function()
94 brightness = LED_OFF; in led_timer_function()
98 led_set_brightness_nosleep(led_cdev, brightness); in led_timer_function()
106 if (brightness) in led_timer_function()
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| D | leds-ti-lmu-common.c | 20 int brightness) in ti_lmu_common_update_brightness() argument
27 * Brightness register update in ti_lmu_common_update_brightness()
30 * MSB brightness should be shifted. in ti_lmu_common_update_brightness()
37 brightness); in ti_lmu_common_update_brightness()
41 val = brightness >> LMU_11BIT_MSB_SHIFT; in ti_lmu_common_update_brightness()
43 val = brightness; in ti_lmu_common_update_brightness()
51 int ti_lmu_common_set_brightness(struct ti_lmu_bank *lmu_bank, int brightness) in ti_lmu_common_set_brightness() argument
53 return ti_lmu_common_update_brightness(lmu_bank, brightness); in ti_lmu_common_set_brightness()
130 ret = device_property_read_u32(dev, "ti,brightness-resolution", in ti_lmu_common_get_brt_res()
134 "ti,brightness-resolution", in ti_lmu_common_get_brt_res()
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| /Linux-v5.10/include/linux/ |
| D | led-class-flash.h | 34 /* set flash brightness */
36 u32 brightness);
37 /* get flash brightness */
39 u32 *brightness);
72 /* flash brightness value in microamperes along with its constraints */
73 struct led_flash_setting brightness; member
168 * led_set_flash_brightness - set flash LED brightness
170 * @brightness: the brightness to set it to
172 * Set a flash LED's brightness.
177 u32 brightness);
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| D | backlight.h | 86 /** enum backlight_scale - the type of scale used for brightness values
88 * The type of scale used for brightness values.
99 * The linear scale will increase brightness the same for each step.
106 * This is often used when the brightness values tries to adjust to
139 * to check if the display is blanked and set brightness accordingly.
149 * @get_brightness: Return the current backlight brightness.
153 * brightness property value is used.
157 * A brightness value which is 0 or a positive number.
184 * @brightness: The current brightness requested by the user.
187 * when the brightness is set via the sysfs attribute:
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| /Linux-v5.10/drivers/net/wireless/ralink/rt2x00/ |
| D | rt2x00leds.c | 22 unsigned int brightness; in rt2x00leds_led_quality() local
55 brightness = ((LED_FULL / 6) * rssi) + 1; in rt2x00leds_led_quality()
56 if (brightness != led->led_dev.brightness) { in rt2x00leds_led_quality()
57 led->led_dev.brightness_set(&led->led_dev, brightness); in rt2x00leds_led_quality()
58 led->led_dev.brightness = brightness; in rt2x00leds_led_quality()
64 unsigned int brightness = enabled ? LED_FULL : LED_OFF; in rt2x00led_led_simple() local
69 led->led_dev.brightness_set(&led->led_dev, brightness); in rt2x00led_led_simple()
70 led->led_dev.brightness = brightness; in rt2x00led_led_simple()
99 led->led_dev.brightness = LED_OFF; in rt2x00leds_register_led()
203 led->led_dev.brightness = LED_OFF; in rt2x00leds_suspend_led()
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