1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/mfd/sc27xx-pmic.h>
14 #include <linux/spi/spi.h>
36 	struct device *dev;
53  * in the device data structure.
61 enum usb_charger_type sprd_pmic_detect_charger_type(struct device *dev)  in sprd_pmic_detect_charger_type()
63 	struct spi_device *spi = to_spi_device(dev);  in sprd_pmic_detect_charger_type()  local
64 	struct sprd_pmic *ddata = spi_get_drvdata(spi);  in sprd_pmic_detect_charger_type()
65 	const struct sprd_pmic_data *pdata = ddata->pdata;  in sprd_pmic_detect_charger_type()
70 	ret = regmap_read_poll_timeout(ddata->regmap, pdata->charger_det, val,  in sprd_pmic_detect_charger_type()
75 		dev_err(&spi->dev, "failed to detect charger type\n");  in sprd_pmic_detect_charger_type()
100 	struct device *dev = context;  in sprd_pmic_spi_write()
101 	struct spi_device *spi = to_spi_device(dev);  in sprd_pmic_spi_write()  local
103 	return spi_write(spi, data, count);  in sprd_pmic_spi_write()
110 	struct device *dev = context;  in sprd_pmic_spi_read()
111 	struct spi_device *spi = to_spi_device(dev);  in sprd_pmic_spi_read()  local
117 		return -EINVAL;  in sprd_pmic_spi_read()
119 	/* Copy address to read from into first element of SPI buffer. */  in sprd_pmic_spi_read()
121 	ret = spi_read(spi, rx_buf, 1);  in sprd_pmic_spi_read()
143 static int sprd_pmic_probe(struct spi_device *spi)  in sprd_pmic_probe()  argument
149 	pdata = of_device_get_match_data(&spi->dev);  in sprd_pmic_probe()
151 		dev_err(&spi->dev, "No matching driver data found\n");  in sprd_pmic_probe()
152 		return -EINVAL;  in sprd_pmic_probe()
155 	ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);  in sprd_pmic_probe()
157 		return -ENOMEM;  in sprd_pmic_probe()
159 	ddata->regmap = devm_regmap_init(&spi->dev, &sprd_pmic_regmap,  in sprd_pmic_probe()
160 					 &spi->dev, &sprd_pmic_config);  in sprd_pmic_probe()
161 	if (IS_ERR(ddata->regmap)) {  in sprd_pmic_probe()
162 		ret = PTR_ERR(ddata->regmap);  in sprd_pmic_probe()
163 		dev_err(&spi->dev, "Failed to allocate register map %d\n", ret);  in sprd_pmic_probe()
167 	spi_set_drvdata(spi, ddata);  in sprd_pmic_probe()
168 	ddata->dev = &spi->dev;  in sprd_pmic_probe()
169 	ddata->irq = spi->irq;  in sprd_pmic_probe()
170 	ddata->pdata = pdata;  in sprd_pmic_probe()
172 	ddata->irq_chip.name = dev_name(&spi->dev);  in sprd_pmic_probe()
173 	ddata->irq_chip.status_base =  in sprd_pmic_probe()
174 		pdata->irq_base + SPRD_PMIC_INT_MASK_STATUS;  in sprd_pmic_probe()
175 	ddata->irq_chip.mask_base = pdata->irq_base + SPRD_PMIC_INT_EN;  in sprd_pmic_probe()
176 	ddata->irq_chip.ack_base = 0;  in sprd_pmic_probe()
177 	ddata->irq_chip.num_regs = 1;  in sprd_pmic_probe()
178 	ddata->irq_chip.num_irqs = pdata->num_irqs;  in sprd_pmic_probe()
179 	ddata->irq_chip.mask_invert = true;  in sprd_pmic_probe()
181 	ddata->irqs = devm_kcalloc(&spi->dev,  in sprd_pmic_probe()
182 				   pdata->num_irqs, sizeof(struct regmap_irq),  in sprd_pmic_probe()
184 	if (!ddata->irqs)  in sprd_pmic_probe()
185 		return -ENOMEM;  in sprd_pmic_probe()
187 	ddata->irq_chip.irqs = ddata->irqs;  in sprd_pmic_probe()
188 	for (i = 0; i < pdata->num_irqs; i++)  in sprd_pmic_probe()
189 		ddata->irqs[i].mask = BIT(i);  in sprd_pmic_probe()
191 	ret = devm_regmap_add_irq_chip(&spi->dev, ddata->regmap, ddata->irq,  in sprd_pmic_probe()
193 				       &ddata->irq_chip, &ddata->irq_data);  in sprd_pmic_probe()
195 		dev_err(&spi->dev, "Failed to add PMIC irq chip %d\n", ret);  in sprd_pmic_probe()
199 	ret = devm_of_platform_populate(&spi->dev);  in sprd_pmic_probe()
201 		dev_err(&spi->dev, "Failed to populate sub-devices %d\n", ret);  in sprd_pmic_probe()
205 	device_init_wakeup(&spi->dev, true);  in sprd_pmic_probe()
210 static int sprd_pmic_suspend(struct device *dev)  in sprd_pmic_suspend()
215 		enable_irq_wake(ddata->irq);  in sprd_pmic_suspend()
220 static int sprd_pmic_resume(struct device *dev)  in sprd_pmic_resume()
225 		disable_irq_wake(ddata->irq);  in sprd_pmic_resume()
241 		.name = "sc27xx-pmic",