1 // SPDX-License-Identifier: GPL-2.0-only
30 	rc = tps65217_set_bits(tps65217_bl->tps, TPS65217_REG_WLEDCTRL1,  in tps65217_bl_enable()
34 		dev_err(tps65217_bl->dev,  in tps65217_bl_enable()
39 	tps65217_bl->is_enabled = true;  in tps65217_bl_enable()
41 	dev_dbg(tps65217_bl->dev, "backlight enabled\n");  in tps65217_bl_enable()
50 	rc = tps65217_clear_bits(tps65217_bl->tps,  in tps65217_bl_disable()
55 		dev_err(tps65217_bl->dev,  in tps65217_bl_disable()
60 	tps65217_bl->is_enabled = false;  in tps65217_bl_disable()
62 	dev_dbg(tps65217_bl->dev, "backlight disabled\n");  in tps65217_bl_disable()
71 	int brightness = backlight_get_brightness(bl);  in tps65217_bl_update_status()  local
73 	if (brightness > 0) {  in tps65217_bl_update_status()
74 		rc = tps65217_reg_write(tps65217_bl->tps,  in tps65217_bl_update_status()
76 					brightness - 1,  in tps65217_bl_update_status()
79 			dev_err(tps65217_bl->dev,  in tps65217_bl_update_status()
80 				"failed to set brightness level: %d\n", rc);  in tps65217_bl_update_status()
84 		dev_dbg(tps65217_bl->dev, "brightness set to %d\n", brightness);  in tps65217_bl_update_status()
86 		if (!tps65217_bl->is_enabled)  in tps65217_bl_update_status()
109 	switch (pdata->isel) {  in tps65217_bl_hw_init()
111 		/* select ISET_1 current level */  in tps65217_bl_hw_init()
112 		rc = tps65217_clear_bits(tps65217_bl->tps,  in tps65217_bl_hw_init()
117 			dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
118 				"failed to select ISET1 current level: %d)\n",  in tps65217_bl_hw_init()
123 		dev_dbg(tps65217_bl->dev, "selected ISET1 current level\n");  in tps65217_bl_hw_init()
128 		/* select ISET2 current level */  in tps65217_bl_hw_init()
129 		rc = tps65217_set_bits(tps65217_bl->tps, TPS65217_REG_WLEDCTRL1,  in tps65217_bl_hw_init()
133 			dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
134 				"failed to select ISET2 current level: %d\n",  in tps65217_bl_hw_init()
139 		dev_dbg(tps65217_bl->dev, "selected ISET2 current level\n");  in tps65217_bl_hw_init()
143 	default:  in tps65217_bl_hw_init()
144 		dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
145 			"invalid value for current level: %d\n", pdata->isel);  in tps65217_bl_hw_init()
146 		return -EINVAL;  in tps65217_bl_hw_init()
150 	rc = tps65217_set_bits(tps65217_bl->tps,  in tps65217_bl_hw_init()
153 			pdata->fdim,  in tps65217_bl_hw_init()
156 		dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
169 	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);  in tps65217_bl_parse_dt()
174 	node = of_get_child_by_name(tps->dev->of_node, "backlight");  in tps65217_bl_parse_dt()
176 		return ERR_PTR(-ENODEV);  in tps65217_bl_parse_dt()
178 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);  in tps65217_bl_parse_dt()
180 		err = ERR_PTR(-ENOMEM);  in tps65217_bl_parse_dt()
184 	pdata->isel = TPS65217_BL_ISET1;  in tps65217_bl_parse_dt()
188 			dev_err(&pdev->dev,  in tps65217_bl_parse_dt()
190 			err = ERR_PTR(-EINVAL);  in tps65217_bl_parse_dt()
194 		pdata->isel = val;  in tps65217_bl_parse_dt()
197 	pdata->fdim = TPS65217_BL_FDIM_200HZ;  in tps65217_bl_parse_dt()
201 			pdata->fdim = TPS65217_BL_FDIM_100HZ;  in tps65217_bl_parse_dt()
205 			pdata->fdim = TPS65217_BL_FDIM_200HZ;  in tps65217_bl_parse_dt()
209 			pdata->fdim = TPS65217_BL_FDIM_500HZ;  in tps65217_bl_parse_dt()
213 			pdata->fdim = TPS65217_BL_FDIM_1000HZ;  in tps65217_bl_parse_dt()
216 		default:  in tps65217_bl_parse_dt()
217 			dev_err(&pdev->dev,  in tps65217_bl_parse_dt()
219 			err = ERR_PTR(-EINVAL);  in tps65217_bl_parse_dt()
224 	if (!of_property_read_u32(node, "default-brightness", &val)) {  in tps65217_bl_parse_dt()
226 			dev_err(&pdev->dev,  in tps65217_bl_parse_dt()
227 				"invalid 'default-brightness' value in the device tree\n");  in tps65217_bl_parse_dt()
228 			err = ERR_PTR(-EINVAL);  in tps65217_bl_parse_dt()
232 		pdata->dft_brightness = val;  in tps65217_bl_parse_dt()
255 	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);  in tps65217_bl_probe()
264 	tps65217_bl = devm_kzalloc(&pdev->dev, sizeof(*tps65217_bl),  in tps65217_bl_probe()
267 		return -ENOMEM;  in tps65217_bl_probe()
269 	tps65217_bl->tps = tps;  in tps65217_bl_probe()
270 	tps65217_bl->dev = &pdev->dev;  in tps65217_bl_probe()
271 	tps65217_bl->is_enabled = false;  in tps65217_bl_probe()
281 	tps65217_bl->bl = devm_backlight_device_register(&pdev->dev, pdev->name,  in tps65217_bl_probe()
282 						tps65217_bl->dev, tps65217_bl,  in tps65217_bl_probe()
284 	if (IS_ERR(tps65217_bl->bl)) {  in tps65217_bl_probe()
285 		dev_err(tps65217_bl->dev,  in tps65217_bl_probe()
287 		return PTR_ERR(tps65217_bl->bl);  in tps65217_bl_probe()
290 	tps65217_bl->bl->props.brightness = pdata->dft_brightness;  in tps65217_bl_probe()
291 	backlight_update_status(tps65217_bl->bl);  in tps65217_bl_probe()
299 	{ .compatible = "ti,tps65217-bl", },
308 		.name	= "tps65217-bl",