| /Linux-v6.1/arch/powerpc/platforms/powermac/ |
| D | backlight.c | 36 * in-kernel control of the brightness needs to be disabled. This should
108 int brightness; in pmac_backlight_key_worker() local
112 brightness = props->brightness + in pmac_backlight_key_worker()
116 if (brightness < 0) in pmac_backlight_key_worker()
117 brightness = 0; in pmac_backlight_key_worker()
118 else if (brightness > props->max_brightness) in pmac_backlight_key_worker()
119 brightness = props->max_brightness; in pmac_backlight_key_worker()
121 props->brightness = brightness; in pmac_backlight_key_worker()
140 static int __pmac_backlight_set_legacy_brightness(int brightness) in __pmac_backlight_set_legacy_brightness() argument
149 props->brightness = brightness * in __pmac_backlight_set_legacy_brightness()
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| /Linux-v6.1/drivers/video/backlight/ |
| 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 | ktd253-backlight.c | 78 int brightness = backlight_get_brightness(bl); in ktd253_backlight_update_status() local
83 dev_dbg(ktd253->dev, "new brightness/ratio: %d/32\n", brightness); in ktd253_backlight_update_status()
85 target_ratio = brightness; in ktd253_backlight_update_status()
149 u32 brightness; in ktd253_backlight_probe() local
157 ret = device_property_read_u32(dev, "max-brightness", &max_brightness); in ktd253_backlight_probe()
161 /* Clamp brightness to hardware max */ in ktd253_backlight_probe()
162 dev_err(dev, "illegal max brightness specified\n"); in ktd253_backlight_probe()
166 ret = device_property_read_u32(dev, "default-brightness", &brightness); in ktd253_backlight_probe()
168 brightness = KTD253_DEFAULT_RATIO; in ktd253_backlight_probe()
169 if (brightness > max_brightness) { in ktd253_backlight_probe()
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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 | mt6370-backlight.c | 76 int brightness = backlight_get_brightness(bl_dev); in mt6370_bl_update_status() local
81 if (brightness) { in mt6370_bl_update_status()
82 brightness_val[0] = (brightness - 1) & priv->dim2_mask; in mt6370_bl_update_status()
83 brightness_val[1] = (brightness - 1) >> priv->dim2_shift; in mt6370_bl_update_status()
91 gpiod_set_value(priv->enable_gpio, !!brightness); in mt6370_bl_update_status()
93 enable_val = brightness ? MT6370_BL_EN_MASK : 0; in mt6370_bl_update_status()
103 int brightness, ret; in mt6370_bl_get_brightness() local
117 brightness = brightness_val[1] << priv->dim2_shift; in mt6370_bl_get_brightness()
118 brightness += brightness_val[0] & priv->dim2_mask; in mt6370_bl_get_brightness()
120 return brightness + 1; in mt6370_bl_get_brightness()
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| D | rt4831-backlight.c | 42 int brightness = backlight_get_brightness(bl_dev); in rt4831_bl_update_status() local
43 unsigned int enable = brightness ? RT4831_BLEN_MASK : 0; in rt4831_bl_update_status()
47 if (brightness) { in rt4831_bl_update_status()
48 v[0] = (brightness - 1) & RT4831_BLDIML_MASK; in rt4831_bl_update_status()
49 v[1] = ((brightness - 1) & RT4831_BLDIMH_MASK) >> RT4831_BLDIMH_SHIFT; in rt4831_bl_update_status()
94 u32 brightness, ocp_uA; in rt4831_parse_backlight_properties() local
99 ret = device_property_read_u32(dev, "max-brightness", &brightness); in rt4831_parse_backlight_properties()
101 brightness = RT4831_BLMAX_BRIGHTNESS; in rt4831_parse_backlight_properties()
103 bl_props->max_brightness = min_t(u32, brightness, RT4831_BLMAX_BRIGHTNESS); in rt4831_parse_backlight_properties()
105 ret = device_property_read_u32(dev, "default-brightness", &brightness); in rt4831_parse_backlight_properties()
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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 | lm3630a_bl.c | 104 /* set brightness A and B */ in lm3630a_chip_init()
186 /* update and get brightness */
195 return lm3630a_pwm_ctrl(pchip, bl->props.brightness, in lm3630a_bank_a_update_status()
203 /* minimum brightness is 0x04 */ in lm3630a_bank_a_update_status()
204 ret = lm3630a_write(pchip, REG_BRT_A, bl->props.brightness); in lm3630a_bank_a_update_status()
205 if (bl->props.brightness < 0x4) in lm3630a_bank_a_update_status()
221 int brightness, rval; in lm3630a_bank_a_get_brightness() local
229 brightness = (rval & 0x01) << 8; in lm3630a_bank_a_get_brightness()
233 brightness |= rval; in lm3630a_bank_a_get_brightness()
245 brightness = rval; in lm3630a_bank_a_get_brightness()
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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 | 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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| 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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| /Linux-v6.1/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 | 29 brightness-levels:
31 Array of distinct brightness levels. The levels must be in the range
33 backlight brightness level into a LED brightness level. If it is not
37 default-brightness-level:
39 The default brightness level (index into the array defined by the
40 "brightness-levels" property).
55 brightness-levels = <0 4 8 16 32 64 128 255>;
56 default-brightness-level = <6>;
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| /Linux-v6.1/drivers/hid/ |
| D | hid-lg-g15.c | 47 enum led_brightness brightness; member
55 /* Protects the transfer_buf and led brightness */
75 hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret); in lg_g15_update_led_brightness()
79 g15->leds[LG_G15_KBD_BRIGHTNESS].brightness = g15->transfer_buf[1]; in lg_g15_update_led_brightness()
80 g15->leds[LG_G15_LCD_BRIGHTNESS].brightness = g15->transfer_buf[2]; in lg_g15_update_led_brightness()
82 g15->leds[LG_G15_MACRO_PRESET1].brightness = in lg_g15_update_led_brightness()
84 g15->leds[LG_G15_MACRO_PRESET2].brightness = in lg_g15_update_led_brightness()
86 g15->leds[LG_G15_MACRO_PRESET3].brightness = in lg_g15_update_led_brightness()
88 g15->leds[LG_G15_MACRO_RECORD].brightness = in lg_g15_update_led_brightness()
99 enum led_brightness brightness; in lg_g15_led_get() local
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| /Linux-v6.1/Documentation/ABI/testing/ |
| 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-v6.1/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-v6.1/include/linux/platform_data/x86/ |
| D | nvidia-wmi-ec-backlight.h | 13 * @WMI_BRIGHTNESS_METHOD_LEVEL: Get/Set EC brightness level status
14 * @WMI_BRIGHTNESS_METHOD_SOURCE: Get/Set EC Brightness Source
24 * @WMI_BRIGHTNESS_MODE_GET: Get the current brightness level/source.
25 * @WMI_BRIGHTNESS_MODE_SET: Set the brightness level.
26 * @WMI_BRIGHTNESS_MODE_GET_MAX_LEVEL: Get the maximum brightness level. This
38 * enum wmi_brightness_source - Backlight brightness control source selection
39 * @WMI_BRIGHTNESS_SOURCE_GPU: Backlight brightness is controlled by the GPU.
40 * @WMI_BRIGHTNESS_SOURCE_EC: Backlight brightness is controlled by the
42 * @WMI_BRIGHTNESS_SOURCE_AUX: Backlight brightness is controlled over the
66 * brightness value when the WMI method ID is %WMI_BRIGHTNESS_METHOD_LEVEL, or
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| /Linux-v6.1/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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| /Linux-v6.1/drivers/leds/ |
| D | led-core.c | 63 unsigned long brightness; in led_timer_function() local
78 brightness = led_get_brightness(led_cdev); in led_timer_function()
79 if (!brightness) { in led_timer_function()
83 brightness = led_cdev->new_blink_brightness; in led_timer_function()
85 brightness = led_cdev->blink_brightness; in led_timer_function()
88 /* Store the current brightness value to be able in led_timer_function()
91 led_cdev->blink_brightness = brightness; in led_timer_function()
92 brightness = LED_OFF; in led_timer_function()
96 led_set_brightness_nosleep(led_cdev, brightness); in led_timer_function()
104 if (brightness) in led_timer_function()
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| D | leds-pwm.c | 42 enum led_brightness brightness) in led_pwm_set() argument
49 duty *= brightness; in led_pwm_set()
70 led_data->cdev.brightness = LED_OFF; in led_pwm_add()
98 /* set brightness */ in led_pwm_add()
101 led_data->cdev.brightness = led->max_brightness; in led_pwm_add()
105 uint64_t brightness; in led_pwm_add() local
107 brightness = led->max_brightness; in led_pwm_add()
108 brightness *= led_data->pwmstate.duty_cycle; in led_pwm_add()
109 do_div(brightness, led_data->pwmstate.period); in led_pwm_add()
110 led_data->cdev.brightness = brightness; in led_pwm_add()
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| /Linux-v6.1/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
192 * led_set_flash_brightness - set flash LED brightness
194 * @brightness: the brightness to set it to
196 * Set a flash LED's brightness.
201 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-v6.1/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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