LXR linux/drivers/mfd/tps65912-spi.c

   1/*
   2 * SPI access driver for TI TPS65912x PMICs
   3 *
   4 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
   5 *      Andrew F. Davis <afd@ti.com>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  12 * kind, whether expressed or implied; without even the implied warranty
  13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License version 2 for more details.
  15 *
  16 * Based on the TPS65218 driver and the previous TPS65912 driver by
  17 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
  18 */
  19
  20#include <linux/module.h>
  21#include <linux/regmap.h>
  22#include <linux/spi/spi.h>
  23
  24#include <linux/mfd/tps65912.h>
  25
  26static const struct of_device_id tps65912_spi_of_match_table[] = {
  27        { .compatible = "ti,tps65912", },
  28        { /* sentinel */ }
  29};
  30
  31static int tps65912_spi_probe(struct spi_device *spi)
  32{
  33        struct tps65912 *tps;
  34
  35        tps = devm_kzalloc(&spi->dev, sizeof(*tps), GFP_KERNEL);
  36        if (!tps)
  37                return -ENOMEM;
  38
  39        spi_set_drvdata(spi, tps);
  40        tps->dev = &spi->dev;
  41        tps->irq = spi->irq;
  42
  43        tps->regmap = devm_regmap_init_spi(spi, &tps65912_regmap_config);
  44        if (IS_ERR(tps->regmap)) {
  45                dev_err(tps->dev, "Failed to initialize register map\n");
  46                return PTR_ERR(tps->regmap);
  47        }
  48
  49        return tps65912_device_init(tps);
  50}
  51
  52static int tps65912_spi_remove(struct spi_device *client)
  53{
  54        struct tps65912 *tps = spi_get_drvdata(client);
  55
  56        return tps65912_device_exit(tps);
  57}
  58
  59static const struct spi_device_id tps65912_spi_id_table[] = {
  60        { "tps65912", 0 },
  61        { /* sentinel */ }
  62};
  63MODULE_DEVICE_TABLE(spi, tps65912_spi_id_table);
  64
  65static struct spi_driver tps65912_spi_driver = {
  66        .driver         = {
  67                .name   = "tps65912",
  68                .of_match_table = tps65912_spi_of_match_table,
  69        },
  70        .probe          = tps65912_spi_probe,
  71        .remove         = tps65912_spi_remove,
  72        .id_table       = tps65912_spi_id_table,
  73};
  74module_spi_driver(tps65912_spi_driver);
  75
  76MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
  77MODULE_DESCRIPTION("TPS65912x SPI Interface Driver");
  78MODULE_LICENSE("GPL v2");
  79