1 // SPDX-License-Identifier: GPL-2.0-only
31 	rc = tps65217_set_bits(tps65217_bl->tps, TPS65217_REG_WLEDCTRL1,  in tps65217_bl_enable()
35 		dev_err(tps65217_bl->dev,  in tps65217_bl_enable()
40 	tps65217_bl->is_enabled = true;  in tps65217_bl_enable()
42 	dev_dbg(tps65217_bl->dev, "backlight enabled\n");  in tps65217_bl_enable()
51 	rc = tps65217_clear_bits(tps65217_bl->tps,  in tps65217_bl_disable()
56 		dev_err(tps65217_bl->dev,  in tps65217_bl_disable()
61 	tps65217_bl->is_enabled = false;  in tps65217_bl_disable()
63 	dev_dbg(tps65217_bl->dev, "backlight disabled\n");  in tps65217_bl_disable()
72 	int brightness = backlight_get_brightness(bl);  in tps65217_bl_update_status()  local
74 	if (brightness > 0) {  in tps65217_bl_update_status()
75 		rc = tps65217_reg_write(tps65217_bl->tps,  in tps65217_bl_update_status()
77 					brightness - 1,  in tps65217_bl_update_status()
80 			dev_err(tps65217_bl->dev,  in tps65217_bl_update_status()
81 				"failed to set brightness level: %d\n", rc);  in tps65217_bl_update_status()
85 		dev_dbg(tps65217_bl->dev, "brightness set to %d\n", brightness);  in tps65217_bl_update_status()
87 		if (!tps65217_bl->is_enabled)  in tps65217_bl_update_status()
110 	switch (pdata->isel) {  in tps65217_bl_hw_init()
113 		rc = tps65217_clear_bits(tps65217_bl->tps,  in tps65217_bl_hw_init()
118 			dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
124 		dev_dbg(tps65217_bl->dev, "selected ISET1 current level\n");  in tps65217_bl_hw_init()
130 		rc = tps65217_set_bits(tps65217_bl->tps, TPS65217_REG_WLEDCTRL1,  in tps65217_bl_hw_init()
134 			dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
140 		dev_dbg(tps65217_bl->dev, "selected ISET2 current level\n");  in tps65217_bl_hw_init()
144 	default:  in tps65217_bl_hw_init()
145 		dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
146 			"invalid value for current level: %d\n", pdata->isel);  in tps65217_bl_hw_init()
147 		return -EINVAL;  in tps65217_bl_hw_init()
151 	rc = tps65217_set_bits(tps65217_bl->tps,  in tps65217_bl_hw_init()
154 			pdata->fdim,  in tps65217_bl_hw_init()
157 		dev_err(tps65217_bl->dev,  in tps65217_bl_hw_init()
170 	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);  in tps65217_bl_parse_dt()
175 	node = of_get_child_by_name(tps->dev->of_node, "backlight");  in tps65217_bl_parse_dt()
177 		return ERR_PTR(-ENODEV);  in tps65217_bl_parse_dt()
179 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);  in tps65217_bl_parse_dt()
181 		err = ERR_PTR(-ENOMEM);  in tps65217_bl_parse_dt()
185 	pdata->isel = TPS65217_BL_ISET1;  in tps65217_bl_parse_dt()
189 			dev_err(&pdev->dev,  in tps65217_bl_parse_dt()
191 			err = ERR_PTR(-EINVAL);  in tps65217_bl_parse_dt()
195 		pdata->isel = val;  in tps65217_bl_parse_dt()
198 	pdata->fdim = TPS65217_BL_FDIM_200HZ;  in tps65217_bl_parse_dt()
202 			pdata->fdim = TPS65217_BL_FDIM_100HZ;  in tps65217_bl_parse_dt()
206 			pdata->fdim = TPS65217_BL_FDIM_200HZ;  in tps65217_bl_parse_dt()
210 			pdata->fdim = TPS65217_BL_FDIM_500HZ;  in tps65217_bl_parse_dt()
214 			pdata->fdim = TPS65217_BL_FDIM_1000HZ;  in tps65217_bl_parse_dt()
217 		default:  in tps65217_bl_parse_dt()
218 			dev_err(&pdev->dev,  in tps65217_bl_parse_dt()
220 			err = ERR_PTR(-EINVAL);  in tps65217_bl_parse_dt()
225 	if (!of_property_read_u32(node, "default-brightness", &val)) {  in tps65217_bl_parse_dt()
227 			dev_err(&pdev->dev,  in tps65217_bl_parse_dt()
228 				"invalid 'default-brightness' value in the device tree\n");  in tps65217_bl_parse_dt()
229 			err = ERR_PTR(-EINVAL);  in tps65217_bl_parse_dt()
233 		pdata->dft_brightness = val;  in tps65217_bl_parse_dt()
256 	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);  in tps65217_bl_probe()
265 	tps65217_bl = devm_kzalloc(&pdev->dev, sizeof(*tps65217_bl),  in tps65217_bl_probe()
268 		return -ENOMEM;  in tps65217_bl_probe()
270 	tps65217_bl->tps = tps;  in tps65217_bl_probe()
271 	tps65217_bl->dev = &pdev->dev;  in tps65217_bl_probe()
272 	tps65217_bl->is_enabled = false;  in tps65217_bl_probe()
282 	tps65217_bl->bl = devm_backlight_device_register(&pdev->dev, pdev->name,  in tps65217_bl_probe()
283 						tps65217_bl->dev, tps65217_bl,  in tps65217_bl_probe()
285 	if (IS_ERR(tps65217_bl->bl)) {  in tps65217_bl_probe()
286 		dev_err(tps65217_bl->dev,  in tps65217_bl_probe()
288 		return PTR_ERR(tps65217_bl->bl);  in tps65217_bl_probe()
291 	tps65217_bl->bl->props.brightness = pdata->dft_brightness;  in tps65217_bl_probe()
292 	backlight_update_status(tps65217_bl->bl);  in tps65217_bl_probe()
300 	{ .compatible = "ti,tps65217-bl", },
309 		.name	= "tps65217-bl",