wm8350-i2c.c 1.5 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * wm8350-i2c.c -- Generic I2C driver for Wolfson WM8350 PMIC
  4. *
  5. * Copyright 2007, 2008 Wolfson Microelectronics PLC.
  6. *
  7. * Author: Liam Girdwood
  8. * linux@wolfsonmicro.com
  9. */
  10. #include <linux/err.h>
  11. #include <linux/init.h>
  12. #include <linux/i2c.h>
  13. #include <linux/platform_device.h>
  14. #include <linux/mfd/wm8350/core.h>
  15. #include <linux/regmap.h>
  16. #include <linux/slab.h>
  17. static int wm8350_i2c_probe(struct i2c_client *i2c,
  18. const struct i2c_device_id *id)
  19. {
  20. struct wm8350 *wm8350;
  21. struct wm8350_platform_data *pdata = dev_get_platdata(&i2c->dev);
  22. int ret = 0;
  23. wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);
  24. if (wm8350 == NULL)
  25. return -ENOMEM;
  26. wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);
  27. if (IS_ERR(wm8350->regmap)) {
  28. ret = PTR_ERR(wm8350->regmap);
  29. dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
  30. ret);
  31. return ret;
  32. }
  33. i2c_set_clientdata(i2c, wm8350);
  34. wm8350->dev = &i2c->dev;
  35. return wm8350_device_init(wm8350, i2c->irq, pdata);
  36. }
  37. static const struct i2c_device_id wm8350_i2c_id[] = {
  38. { "wm8350", 0 },
  39. { "wm8351", 0 },
  40. { "wm8352", 0 },
  41. { }
  42. };
  43. static struct i2c_driver wm8350_i2c_driver = {
  44. .driver = {
  45. .name = "wm8350",
  46. .suppress_bind_attrs = true,
  47. },
  48. .probe = wm8350_i2c_probe,
  49. .id_table = wm8350_i2c_id,
  50. };
  51. static int __init wm8350_i2c_init(void)
  52. {
  53. return i2c_add_driver(&wm8350_i2c_driver);
  54. }
  55. /* init early so consumer devices can complete system boot */
  56. subsys_initcall(wm8350_i2c_init);