^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // Copyright (c) 2019 Mantas Pucka <mantas@8devices.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) // Copyright (c) 2019 Robert Marko <robert.marko@sartura.hr>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) // Driver for IPQ4019 SD/MMC controller's I/O LDO voltage regulator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/regulator/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/regulator/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/regulator/of_regulator.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static const unsigned int ipq4019_vmmc_voltages[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 1500000, 1800000, 2500000, 3000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static const struct regulator_ops ipq4019_regulator_voltage_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) .list_voltage = regulator_list_voltage_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) .map_voltage = regulator_map_voltage_ascend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) .get_voltage_sel = regulator_get_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) .set_voltage_sel = regulator_set_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static const struct regulator_desc vmmc_regulator = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) .name = "vmmcq",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) .ops = &ipq4019_regulator_voltage_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .type = REGULATOR_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .volt_table = ipq4019_vmmc_voltages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) .n_voltages = ARRAY_SIZE(ipq4019_vmmc_voltages),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) .vsel_reg = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) .vsel_mask = 0x3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static const struct regmap_config ipq4019_vmmcq_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .reg_stride = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int ipq4019_regulator_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct regulator_init_data *init_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct regulator_config cfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct regmap *rmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) init_data = of_get_regulator_init_data(dev, dev->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) &vmmc_regulator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (!init_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) base = devm_ioremap_resource(dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (IS_ERR(base))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return PTR_ERR(base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) rmap = devm_regmap_init_mmio(dev, base, &ipq4019_vmmcq_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (IS_ERR(rmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return PTR_ERR(rmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) cfg.dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) cfg.init_data = init_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) cfg.of_node = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) cfg.regmap = rmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) rdev = devm_regulator_register(dev, &vmmc_regulator, &cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (IS_ERR(rdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) dev_err(dev, "Failed to register regulator: %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) PTR_ERR(rdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return PTR_ERR(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) platform_set_drvdata(pdev, rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static const struct of_device_id regulator_ipq4019_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) { .compatible = "qcom,vqmmc-ipq4019-regulator", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static struct platform_driver ipq4019_regulator_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .probe = ipq4019_regulator_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .name = "vqmmc-ipq4019-regulator",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .of_match_table = of_match_ptr(regulator_ipq4019_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) module_platform_driver(ipq4019_regulator_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) MODULE_AUTHOR("Mantas Pucka <mantas@8devices.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_DESCRIPTION("IPQ4019 VQMMC voltage regulator");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags