1 // SPDX-License-Identifier: GPL-2.0-only
4  * Pandora uses TWL4030 PWM0 -> TPS61161 combo for control backlight.
33 #define MAX_USER_VALUE (MAX_VALUE - MIN_VALUE)
40 static int pandora_backlight_update_status(struct backlight_device *bl)  in pandora_backlight_update_status()  argument
42 	int brightness = bl->props.brightness;  in pandora_backlight_update_status()
43 	struct pandora_private *priv = bl_get_data(bl);  in pandora_backlight_update_status()
46 	if (bl->props.power != FB_BLANK_UNBLANK)  in pandora_backlight_update_status()
48 	if (bl->props.state & BL_CORE_FBBLANK)  in pandora_backlight_update_status()
50 	if (bl->props.state & BL_CORE_SUSPENDED)  in pandora_backlight_update_status()
57 		if (priv->old_state == PANDORABL_WAS_OFF)  in pandora_backlight_update_status()
70 	if (priv->old_state == PANDORABL_WAS_OFF) {  in pandora_backlight_update_status()
97 		priv->old_state = 0;  in pandora_backlight_update_status()
99 		priv->old_state = PANDORABL_WAS_OFF;  in pandora_backlight_update_status()
112 	struct backlight_device *bl;  in pandora_backlight_probe()  local
116 	priv = devm_kmalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in pandora_backlight_probe()
118 		dev_err(&pdev->dev, "failed to allocate driver private data\n");  in pandora_backlight_probe()
119 		return -ENOMEM;  in pandora_backlight_probe()
125 	bl = devm_backlight_device_register(&pdev->dev, pdev->name, &pdev->dev,  in pandora_backlight_probe()
127 	if (IS_ERR(bl)) {  in pandora_backlight_probe()
128 		dev_err(&pdev->dev, "failed to register backlight\n");  in pandora_backlight_probe()
129 		return PTR_ERR(bl);  in pandora_backlight_probe()
132 	platform_set_drvdata(pdev, bl);  in pandora_backlight_probe()
137 	priv->old_state = PANDORABL_WAS_OFF;  in pandora_backlight_probe()
138 	bl->props.brightness = MAX_USER_VALUE;  in pandora_backlight_probe()
139 	backlight_update_status(bl);  in pandora_backlight_probe()
152 		.name	= "pandora-backlight",
162 MODULE_ALIAS("platform:pandora-backlight");