^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (C) 2016 Texas Instruments Incorporated - https://www.ti.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Author: Keerthy <j-keerthy@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * This program is free software; you can redistribute it and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * modify it under the terms of the GNU General Public License as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * published by the Free Software Foundation version 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * This program is distributed "as is" WITHOUT ANY WARRANTY of any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * kind, whether express or implied; without even the implied warranty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mfd/lp873x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static const struct regmap_config lp873x_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) .val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) .max_register = LP873X_REG_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static const struct mfd_cell lp873x_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) { .name = "lp873x-regulator", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) { .name = "lp873x-gpio", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static int lp873x_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) const struct i2c_device_id *ids)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct lp873x *lp873;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) unsigned int otpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (!lp873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) lp873->dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (IS_ERR(lp873->regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) ret = PTR_ERR(lp873->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) dev_err(lp873->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) "Failed to initialize register map: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) dev_err(lp873->dev, "Failed to read OTP ID\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) i2c_set_clientdata(client, lp873);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static const struct of_device_id of_lp873x_match_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) { .compatible = "ti,lp8733", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) { .compatible = "ti,lp8732", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) MODULE_DEVICE_TABLE(of, of_lp873x_match_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static const struct i2c_device_id lp873x_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) { "lp873x", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static struct i2c_driver lp873x_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .name = "lp873x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .of_match_table = of_lp873x_match_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .probe = lp873x_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .id_table = lp873x_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) module_i2c_driver(lp873x_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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