1 // SPDX-License-Identifier: GPL-2.0-only
3  * Device driver for MFD hi655x PMIC
16 #include <linux/mfd/hi655x-pmic.h>
18 #include <linux/gpio/consumer.h>
35 	.name = "hi655x-pmic",
48 	.max_register = HI655X_BUS_ADDR(0x400) - HI655X_STRIDE,
72 		.name		= "hi65xx-powerkey",
76 	{	.name		= "hi655x-regulator",	},
77 	{	.name		= "hi655x-clk",		},
94 	struct hi655x_pmic *pmic;  in hi655x_pmic_probe()  local
95 	struct device *dev = &pdev->dev;  in hi655x_pmic_probe()
98 	pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);  in hi655x_pmic_probe()
99 	if (!pmic)  in hi655x_pmic_probe()
100 		return -ENOMEM;  in hi655x_pmic_probe()
101 	pmic->dev = dev;  in hi655x_pmic_probe()
107 	pmic->regmap = devm_regmap_init_mmio_clk(dev, NULL, base,  in hi655x_pmic_probe()
109 	if (IS_ERR(pmic->regmap))  in hi655x_pmic_probe()
110 		return PTR_ERR(pmic->regmap);  in hi655x_pmic_probe()
112 	regmap_read(pmic->regmap, HI655X_BUS_ADDR(HI655X_VER_REG), &pmic->ver);  in hi655x_pmic_probe()
113 	if ((pmic->ver < PMU_VER_START) || (pmic->ver > PMU_VER_END)) {  in hi655x_pmic_probe()
114 		dev_warn(dev, "PMU version %d unsupported\n", pmic->ver);  in hi655x_pmic_probe()
115 		return -EINVAL;  in hi655x_pmic_probe()
118 	hi655x_local_irq_clear(pmic->regmap);  in hi655x_pmic_probe()
120 	pmic->gpio = devm_gpiod_get_optional(dev, "pmic", GPIOD_IN);  in hi655x_pmic_probe()
121 	if (IS_ERR(pmic->gpio))  in hi655x_pmic_probe()
122 		return dev_err_probe(dev, PTR_ERR(pmic->gpio),  in hi655x_pmic_probe()
123 				"Failed to request hi655x pmic-gpio");  in hi655x_pmic_probe()
125 	ret = regmap_add_irq_chip(pmic->regmap, gpiod_to_irq(pmic->gpio),  in hi655x_pmic_probe()
127 				  &hi655x_irq_chip, &pmic->irq_data);  in hi655x_pmic_probe()
133 	platform_set_drvdata(pdev, pmic);  in hi655x_pmic_probe()
137 			      regmap_irq_get_domain(pmic->irq_data));  in hi655x_pmic_probe()
140 		regmap_del_irq_chip(gpiod_to_irq(pmic->gpio), pmic->irq_data);  in hi655x_pmic_probe()
149 	struct hi655x_pmic *pmic = platform_get_drvdata(pdev);  in hi655x_pmic_remove()  local
151 	regmap_del_irq_chip(gpiod_to_irq(pmic->gpio), pmic->irq_data);  in hi655x_pmic_remove()
152 	mfd_remove_devices(&pdev->dev);  in hi655x_pmic_remove()
156 	{ .compatible = "hisilicon,hi655x-pmic", },
163 		.name = "hi655x-pmic",
172 MODULE_DESCRIPTION("Hisilicon hi655x PMIC driver");