drivers/mfd/tps65912-spi.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * SPI access driver for TI TPS65912x PMICs
   4  *
   5  * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
   6  *      Andrew F. Davis <afd@ti.com>
   7  *
   8  * Based on the TPS65218 driver and the previous TPS65912 driver by
   9  * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/regmap.h>
  14 #include <linux/spi/spi.h>
  15
  16 #include <linux/mfd/tps65912.h>
  17
  18 static const struct of_device_id tps65912_spi_of_match_table[] = {
  19         { .compatible = "ti,tps65912", },
  20         { /* sentinel */ }
  21 };
  22 MODULE_DEVICE_TABLE(of, tps65912_spi_of_match_table);
  23
  24 static int tps65912_spi_probe(struct spi_device *spi)
  25 {
  26         struct tps65912 *tps;
  27
  28         tps = devm_kzalloc(&spi->dev, sizeof(*tps), GFP_KERNEL);
  29         if (!tps)
  30                 return -ENOMEM;
  31
  32         spi_set_drvdata(spi, tps);
  33         tps->dev = &spi->dev;
  34         tps->irq = spi->irq;
  35
  36         tps->regmap = devm_regmap_init_spi(spi, &tps65912_regmap_config);
  37         if (IS_ERR(tps->regmap)) {
  38                 dev_err(tps->dev, "Failed to initialize register map\n");
  39                 return PTR_ERR(tps->regmap);
  40         }
  41
  42         return tps65912_device_init(tps);
  43 }
  44
  45 static const struct spi_device_id tps65912_spi_id_table[] = {
  46         { "tps65912", 0 },
  47         { /* sentinel */ }
  48 };
  49 MODULE_DEVICE_TABLE(spi, tps65912_spi_id_table);
  50
  51 static struct spi_driver tps65912_spi_driver = {
  52         .driver         = {
  53                 .name   = "tps65912",
  54                 .of_match_table = tps65912_spi_of_match_table,
  55         },
  56         .probe          = tps65912_spi_probe,
  57         .id_table       = tps65912_spi_id_table,
  58 };
  59 module_spi_driver(tps65912_spi_driver);
  60
  61 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
  62 MODULE_DESCRIPTION("TPS65912x SPI Interface Driver");
  63 MODULE_LICENSE("GPL v2");