max1586.h 2.1 KB

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  1. /*
  2. * max1586.h -- Voltage regulation for the Maxim 1586
  3. *
  4. * Copyright (C) 2008 Robert Jarzmik
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation; either version 2 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with this program; if not, write to the Free Software
  18. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19. */
  20. #ifndef REGULATOR_MAX1586
  21. #define REGULATOR_MAX1586
  22. #include <linux/regulator/machine.h>
  23. #define MAX1586_V3 0
  24. #define MAX1586_V6 1
  25. /* precalculated values for v3_gain */
  26. #define MAX1586_GAIN_NO_R24 1000000 /* 700000 .. 1475000 mV */
  27. #define MAX1586_GAIN_R24_3k32 1051098 /* 735768 .. 1550369 mV */
  28. #define MAX1586_GAIN_R24_5k11 1078648 /* 755053 .. 1591005 mV */
  29. #define MAX1586_GAIN_R24_7k5 1115432 /* 780802 .. 1645262 mV */
  30. /**
  31. * max1586_subdev_data - regulator data
  32. * @id: regulator Id (either MAX1586_V3 or MAX1586_V6)
  33. * @name: regulator cute name (example for V3: "vcc_core")
  34. * @platform_data: regulator init data (constraints, supplies, ...)
  35. */
  36. struct max1586_subdev_data {
  37. int id;
  38. const char *name;
  39. struct regulator_init_data *platform_data;
  40. };
  41. /**
  42. * max1586_platform_data - platform data for max1586
  43. * @num_subdevs: number of regulators used (may be 1 or 2)
  44. * @subdevs: regulator used
  45. * At most, there will be a regulator for V3 and one for V6 voltages.
  46. * @v3_gain: gain on the V3 voltage output multiplied by 1e6.
  47. * This can be calculated as ((1 + R24/R25 + R24/185.5kOhm) * 1e6)
  48. * for an external resistor configuration as described in the
  49. * data sheet (R25=100kOhm).
  50. */
  51. struct max1586_platform_data {
  52. int num_subdevs;
  53. struct max1586_subdev_data *subdevs;
  54. int v3_gain;
  55. };
  56. #endif