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b920eb41a8
-----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iQEcBAABAgAGBQJPgOpXAAoJEHm+PkMAQRiG8eUIAJ3Hjo0o5hqzxol8LWHDGF8s 3h59qwRtts82u2psStZULPLbBzw6yjn8U5Mcrh7pffwCG2BzBL5rXcmXfvoPaET3 TjylIj986Jv+jwZyuyZcLzYyoUtgjtq7hnt4tgVVEPlexYs7LxUl8vO8QjxT+bVO 7eKgzLsXlBC9kw4P5M7kOBQ9NE5vmEcKf+fB3Hu3DqfVJtw9Lb7EeDQj/cbQsGqI vavSxe7lMTPsgMP2+hRz4txGTDJNRazkO2BdwfYrcNwTSa8tfBFlamww3y4+eJtq MFQfdNxQpumh2++T4IC2i/nLaawH7kWj2EdaRCRLMy9hVlb/v8/wcgd+1nfLkU8= =0on9 -----END PGP SIGNATURE----- Merge tag 'v3.4-rc2' into regulator-drivers Linux 3.4-rc2 contains some fixes that further patches depend upon.
1627 lines
38 KiB
C
1627 lines
38 KiB
C
/*
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* wm8350.c -- Voltage and current regulation for the Wolfson WM8350 PMIC
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*
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* Copyright 2007, 2008 Wolfson Microelectronics PLC.
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*
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* Author: Liam Girdwood
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* linux@wolfsonmicro.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/mfd/wm8350/core.h>
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#include <linux/mfd/wm8350/pmic.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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/* Maximum value possible for VSEL */
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#define WM8350_DCDC_MAX_VSEL 0x66
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/* Microamps */
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static const int isink_cur[] = {
|
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4,
|
|
5,
|
|
6,
|
|
7,
|
|
8,
|
|
10,
|
|
11,
|
|
14,
|
|
16,
|
|
19,
|
|
23,
|
|
27,
|
|
32,
|
|
39,
|
|
46,
|
|
54,
|
|
65,
|
|
77,
|
|
92,
|
|
109,
|
|
130,
|
|
154,
|
|
183,
|
|
218,
|
|
259,
|
|
308,
|
|
367,
|
|
436,
|
|
518,
|
|
616,
|
|
733,
|
|
872,
|
|
1037,
|
|
1233,
|
|
1466,
|
|
1744,
|
|
2073,
|
|
2466,
|
|
2933,
|
|
3487,
|
|
4147,
|
|
4932,
|
|
5865,
|
|
6975,
|
|
8294,
|
|
9864,
|
|
11730,
|
|
13949,
|
|
16589,
|
|
19728,
|
|
23460,
|
|
27899,
|
|
33178,
|
|
39455,
|
|
46920,
|
|
55798,
|
|
66355,
|
|
78910,
|
|
93840,
|
|
111596,
|
|
132710,
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|
157820,
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|
187681,
|
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223191
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|
};
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static int get_isink_val(int min_uA, int max_uA, u16 *setting)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(isink_cur); i++) {
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if (min_uA <= isink_cur[i] && max_uA >= isink_cur[i]) {
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*setting = i;
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return 0;
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}
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}
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return -EINVAL;
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}
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static inline int wm8350_ldo_val_to_mvolts(unsigned int val)
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{
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if (val < 16)
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return (val * 50) + 900;
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else
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return ((val - 16) * 100) + 1800;
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}
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static inline unsigned int wm8350_ldo_mvolts_to_val(int mV)
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{
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if (mV < 1800)
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return (mV - 900) / 50;
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else
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return ((mV - 1800) / 100) + 16;
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}
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static inline int wm8350_dcdc_val_to_mvolts(unsigned int val)
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{
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return (val * 25) + 850;
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}
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static inline unsigned int wm8350_dcdc_mvolts_to_val(int mV)
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{
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return (mV - 850) / 25;
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}
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static int wm8350_isink_set_current(struct regulator_dev *rdev, int min_uA,
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int max_uA)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
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int isink = rdev_get_id(rdev);
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u16 val, setting;
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int ret;
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ret = get_isink_val(min_uA, max_uA, &setting);
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if (ret != 0)
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return ret;
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switch (isink) {
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case WM8350_ISINK_A:
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val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
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~WM8350_CS1_ISEL_MASK;
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wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_A,
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val | setting);
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break;
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case WM8350_ISINK_B:
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val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
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~WM8350_CS1_ISEL_MASK;
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wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_B,
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val | setting);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int wm8350_isink_get_current(struct regulator_dev *rdev)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
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int isink = rdev_get_id(rdev);
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u16 val;
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switch (isink) {
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case WM8350_ISINK_A:
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val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
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WM8350_CS1_ISEL_MASK;
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break;
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case WM8350_ISINK_B:
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val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
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WM8350_CS1_ISEL_MASK;
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break;
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default:
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return 0;
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}
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return isink_cur[val];
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}
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/* turn on ISINK followed by DCDC */
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static int wm8350_isink_enable(struct regulator_dev *rdev)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
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int isink = rdev_get_id(rdev);
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switch (isink) {
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case WM8350_ISINK_A:
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switch (wm8350->pmic.isink_A_dcdc) {
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case WM8350_DCDC_2:
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case WM8350_DCDC_5:
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wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7,
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WM8350_CS1_ENA);
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wm8350_set_bits(wm8350, WM8350_CSA_FLASH_CONTROL,
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WM8350_CS1_DRIVE);
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wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
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1 << (wm8350->pmic.isink_A_dcdc -
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WM8350_DCDC_1));
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break;
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default:
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return -EINVAL;
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}
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break;
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case WM8350_ISINK_B:
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switch (wm8350->pmic.isink_B_dcdc) {
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case WM8350_DCDC_2:
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case WM8350_DCDC_5:
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wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7,
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WM8350_CS2_ENA);
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wm8350_set_bits(wm8350, WM8350_CSB_FLASH_CONTROL,
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WM8350_CS2_DRIVE);
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wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
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1 << (wm8350->pmic.isink_B_dcdc -
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WM8350_DCDC_1));
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break;
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default:
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return -EINVAL;
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int wm8350_isink_disable(struct regulator_dev *rdev)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
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int isink = rdev_get_id(rdev);
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switch (isink) {
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case WM8350_ISINK_A:
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switch (wm8350->pmic.isink_A_dcdc) {
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case WM8350_DCDC_2:
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case WM8350_DCDC_5:
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wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
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1 << (wm8350->pmic.isink_A_dcdc -
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WM8350_DCDC_1));
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wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7,
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WM8350_CS1_ENA);
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break;
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default:
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return -EINVAL;
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}
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break;
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case WM8350_ISINK_B:
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switch (wm8350->pmic.isink_B_dcdc) {
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case WM8350_DCDC_2:
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case WM8350_DCDC_5:
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wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
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1 << (wm8350->pmic.isink_B_dcdc -
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WM8350_DCDC_1));
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wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7,
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WM8350_CS2_ENA);
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break;
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default:
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return -EINVAL;
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int wm8350_isink_is_enabled(struct regulator_dev *rdev)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
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int isink = rdev_get_id(rdev);
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switch (isink) {
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case WM8350_ISINK_A:
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return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
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0x8000;
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case WM8350_ISINK_B:
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return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
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0x8000;
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}
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return -EINVAL;
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}
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static int wm8350_isink_enable_time(struct regulator_dev *rdev)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
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int isink = rdev_get_id(rdev);
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int reg;
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switch (isink) {
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case WM8350_ISINK_A:
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reg = wm8350_reg_read(wm8350, WM8350_CSA_FLASH_CONTROL);
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break;
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case WM8350_ISINK_B:
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reg = wm8350_reg_read(wm8350, WM8350_CSB_FLASH_CONTROL);
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break;
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default:
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return -EINVAL;
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}
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if (reg & WM8350_CS1_FLASH_MODE) {
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switch (reg & WM8350_CS1_ON_RAMP_MASK) {
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case 0:
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return 0;
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case 1:
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return 1950;
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case 2:
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return 3910;
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case 3:
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return 7800;
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}
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} else {
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switch (reg & WM8350_CS1_ON_RAMP_MASK) {
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case 0:
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return 0;
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case 1:
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return 250000;
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case 2:
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return 500000;
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case 3:
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return 1000000;
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}
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}
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return -EINVAL;
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}
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int wm8350_isink_set_flash(struct wm8350 *wm8350, int isink, u16 mode,
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u16 trigger, u16 duration, u16 on_ramp, u16 off_ramp,
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u16 drive)
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{
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switch (isink) {
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case WM8350_ISINK_A:
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wm8350_reg_write(wm8350, WM8350_CSA_FLASH_CONTROL,
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(mode ? WM8350_CS1_FLASH_MODE : 0) |
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(trigger ? WM8350_CS1_TRIGSRC : 0) |
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duration | on_ramp | off_ramp | drive);
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break;
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case WM8350_ISINK_B:
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wm8350_reg_write(wm8350, WM8350_CSB_FLASH_CONTROL,
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(mode ? WM8350_CS2_FLASH_MODE : 0) |
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(trigger ? WM8350_CS2_TRIGSRC : 0) |
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duration | on_ramp | off_ramp | drive);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(wm8350_isink_set_flash);
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static int wm8350_dcdc_set_voltage(struct regulator_dev *rdev, int min_uV,
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int max_uV, unsigned *selector)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
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int volt_reg, dcdc = rdev_get_id(rdev), mV,
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min_mV = min_uV / 1000, max_mV = max_uV / 1000;
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u16 val;
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if (min_mV < 850 || min_mV > 4025)
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return -EINVAL;
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if (max_mV < 850 || max_mV > 4025)
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return -EINVAL;
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/* step size is 25mV */
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mV = (min_mV - 826) / 25;
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if (wm8350_dcdc_val_to_mvolts(mV) > max_mV)
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return -EINVAL;
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BUG_ON(wm8350_dcdc_val_to_mvolts(mV) < min_mV);
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switch (dcdc) {
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case WM8350_DCDC_1:
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volt_reg = WM8350_DCDC1_CONTROL;
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break;
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case WM8350_DCDC_3:
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volt_reg = WM8350_DCDC3_CONTROL;
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break;
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case WM8350_DCDC_4:
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volt_reg = WM8350_DCDC4_CONTROL;
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break;
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case WM8350_DCDC_6:
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volt_reg = WM8350_DCDC6_CONTROL;
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break;
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case WM8350_DCDC_2:
|
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case WM8350_DCDC_5:
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default:
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return -EINVAL;
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}
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|
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*selector = mV;
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|
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/* all DCDCs have same mV bits */
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val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK;
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wm8350_reg_write(wm8350, volt_reg, val | mV);
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return 0;
|
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}
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|
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static int wm8350_dcdc_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
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int volt_reg, dcdc = rdev_get_id(rdev);
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|
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switch (dcdc) {
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case WM8350_DCDC_1:
|
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volt_reg = WM8350_DCDC1_CONTROL;
|
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break;
|
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case WM8350_DCDC_3:
|
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volt_reg = WM8350_DCDC3_CONTROL;
|
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break;
|
|
case WM8350_DCDC_4:
|
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volt_reg = WM8350_DCDC4_CONTROL;
|
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break;
|
|
case WM8350_DCDC_6:
|
|
volt_reg = WM8350_DCDC6_CONTROL;
|
|
break;
|
|
case WM8350_DCDC_2:
|
|
case WM8350_DCDC_5:
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* all DCDCs have same mV bits */
|
|
return wm8350_reg_read(wm8350, volt_reg) & WM8350_DC1_VSEL_MASK;
|
|
}
|
|
|
|
static int wm8350_dcdc_list_voltage(struct regulator_dev *rdev,
|
|
unsigned selector)
|
|
{
|
|
if (selector > WM8350_DCDC_MAX_VSEL)
|
|
return -EINVAL;
|
|
return wm8350_dcdc_val_to_mvolts(selector) * 1000;
|
|
}
|
|
|
|
static int wm8350_dcdc_set_suspend_voltage(struct regulator_dev *rdev, int uV)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int volt_reg, mV = uV / 1000, dcdc = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, dcdc, mV);
|
|
|
|
if (mV && (mV < 850 || mV > 4025)) {
|
|
dev_err(wm8350->dev,
|
|
"DCDC%d suspend voltage %d mV out of range\n",
|
|
dcdc, mV);
|
|
return -EINVAL;
|
|
}
|
|
if (mV == 0)
|
|
mV = 850;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
volt_reg = WM8350_DCDC1_LOW_POWER;
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
volt_reg = WM8350_DCDC3_LOW_POWER;
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
volt_reg = WM8350_DCDC4_LOW_POWER;
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
volt_reg = WM8350_DCDC6_LOW_POWER;
|
|
break;
|
|
case WM8350_DCDC_2:
|
|
case WM8350_DCDC_5:
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* all DCDCs have same mV bits */
|
|
val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK;
|
|
wm8350_reg_write(wm8350, volt_reg,
|
|
val | wm8350_dcdc_mvolts_to_val(mV));
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_dcdc_set_suspend_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER)
|
|
& ~WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER,
|
|
val | wm8350->pmic.dcdc1_hib_mode);
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER)
|
|
& ~WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER,
|
|
val | wm8350->pmic.dcdc3_hib_mode);
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER)
|
|
& ~WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER,
|
|
val | wm8350->pmic.dcdc4_hib_mode);
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER)
|
|
& ~WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER,
|
|
val | wm8350->pmic.dcdc6_hib_mode);
|
|
break;
|
|
case WM8350_DCDC_2:
|
|
case WM8350_DCDC_5:
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_dcdc_set_suspend_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER);
|
|
wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER,
|
|
val | WM8350_DCDC_HIB_MODE_DIS);
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER);
|
|
wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER,
|
|
val | WM8350_DCDC_HIB_MODE_DIS);
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER);
|
|
wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER,
|
|
val | WM8350_DCDC_HIB_MODE_DIS);
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER);
|
|
wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER,
|
|
val | WM8350_DCDC_HIB_MODE_DIS);
|
|
break;
|
|
case WM8350_DCDC_2:
|
|
case WM8350_DCDC_5:
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_dcdc25_set_suspend_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_2:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
|
|
& ~WM8350_DC2_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
|
|
(WM8350_DC2_HIB_MODE_ACTIVE << WM8350_DC2_HIB_MODE_SHIFT));
|
|
break;
|
|
case WM8350_DCDC_5:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
|
|
& ~WM8350_DC5_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
|
|
(WM8350_DC5_HIB_MODE_ACTIVE << WM8350_DC5_HIB_MODE_SHIFT));
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_dcdc25_set_suspend_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_2:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
|
|
& ~WM8350_DC2_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
|
|
(WM8350_DC2_HIB_MODE_DISABLE << WM8350_DC2_HIB_MODE_SHIFT));
|
|
break;
|
|
case WM8350_DCDC_5:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
|
|
& ~WM8350_DC5_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
|
|
(WM8350_DC5_HIB_MODE_DISABLE << WM8350_DC5_HIB_MODE_SHIFT));
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev,
|
|
unsigned int mode)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 *hib_mode;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
hib_mode = &wm8350->pmic.dcdc1_hib_mode;
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
hib_mode = &wm8350->pmic.dcdc3_hib_mode;
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
hib_mode = &wm8350->pmic.dcdc4_hib_mode;
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
hib_mode = &wm8350->pmic.dcdc6_hib_mode;
|
|
break;
|
|
case WM8350_DCDC_2:
|
|
case WM8350_DCDC_5:
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_NORMAL:
|
|
*hib_mode = WM8350_DCDC_HIB_MODE_IMAGE;
|
|
break;
|
|
case REGULATOR_MODE_IDLE:
|
|
*hib_mode = WM8350_DCDC_HIB_MODE_STANDBY;
|
|
break;
|
|
case REGULATOR_MODE_STANDBY:
|
|
*hib_mode = WM8350_DCDC_HIB_MODE_LDO_IM;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int volt_reg, mV = uV / 1000, ldo = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, ldo, mV);
|
|
|
|
if (mV < 900 || mV > 3300) {
|
|
dev_err(wm8350->dev, "LDO%d voltage %d mV out of range\n",
|
|
ldo, mV);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (ldo) {
|
|
case WM8350_LDO_1:
|
|
volt_reg = WM8350_LDO1_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_2:
|
|
volt_reg = WM8350_LDO2_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_3:
|
|
volt_reg = WM8350_LDO3_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_4:
|
|
volt_reg = WM8350_LDO4_LOW_POWER;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* all LDOs have same mV bits */
|
|
val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK;
|
|
wm8350_reg_write(wm8350, volt_reg,
|
|
val | wm8350_ldo_mvolts_to_val(mV));
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_ldo_set_suspend_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int volt_reg, ldo = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
switch (ldo) {
|
|
case WM8350_LDO_1:
|
|
volt_reg = WM8350_LDO1_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_2:
|
|
volt_reg = WM8350_LDO2_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_3:
|
|
volt_reg = WM8350_LDO3_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_4:
|
|
volt_reg = WM8350_LDO4_LOW_POWER;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* all LDOs have same mV bits */
|
|
val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, volt_reg, val);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_ldo_set_suspend_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int volt_reg, ldo = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
switch (ldo) {
|
|
case WM8350_LDO_1:
|
|
volt_reg = WM8350_LDO1_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_2:
|
|
volt_reg = WM8350_LDO2_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_3:
|
|
volt_reg = WM8350_LDO3_LOW_POWER;
|
|
break;
|
|
case WM8350_LDO_4:
|
|
volt_reg = WM8350_LDO4_LOW_POWER;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* all LDOs have same mV bits */
|
|
val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK;
|
|
wm8350_reg_write(wm8350, volt_reg, val | WM8350_LDO1_HIB_MODE_DIS);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_ldo_set_voltage(struct regulator_dev *rdev, int min_uV,
|
|
int max_uV, unsigned *selector)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int volt_reg, ldo = rdev_get_id(rdev), mV, min_mV = min_uV / 1000,
|
|
max_mV = max_uV / 1000;
|
|
u16 val;
|
|
|
|
if (min_mV < 900 || min_mV > 3300)
|
|
return -EINVAL;
|
|
if (max_mV < 900 || max_mV > 3300)
|
|
return -EINVAL;
|
|
|
|
if (min_mV < 1800) {
|
|
/* step size is 50mV < 1800mV */
|
|
mV = (min_mV - 851) / 50;
|
|
if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
|
|
return -EINVAL;
|
|
BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
|
|
} else {
|
|
/* step size is 100mV > 1800mV */
|
|
mV = ((min_mV - 1701) / 100) + 16;
|
|
if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
|
|
return -EINVAL;
|
|
BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
|
|
}
|
|
|
|
switch (ldo) {
|
|
case WM8350_LDO_1:
|
|
volt_reg = WM8350_LDO1_CONTROL;
|
|
break;
|
|
case WM8350_LDO_2:
|
|
volt_reg = WM8350_LDO2_CONTROL;
|
|
break;
|
|
case WM8350_LDO_3:
|
|
volt_reg = WM8350_LDO3_CONTROL;
|
|
break;
|
|
case WM8350_LDO_4:
|
|
volt_reg = WM8350_LDO4_CONTROL;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
*selector = mV;
|
|
|
|
/* all LDOs have same mV bits */
|
|
val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK;
|
|
wm8350_reg_write(wm8350, volt_reg, val | mV);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_ldo_get_voltage_sel(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int volt_reg, ldo = rdev_get_id(rdev);
|
|
|
|
switch (ldo) {
|
|
case WM8350_LDO_1:
|
|
volt_reg = WM8350_LDO1_CONTROL;
|
|
break;
|
|
case WM8350_LDO_2:
|
|
volt_reg = WM8350_LDO2_CONTROL;
|
|
break;
|
|
case WM8350_LDO_3:
|
|
volt_reg = WM8350_LDO3_CONTROL;
|
|
break;
|
|
case WM8350_LDO_4:
|
|
volt_reg = WM8350_LDO4_CONTROL;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* all LDOs have same mV bits */
|
|
return wm8350_reg_read(wm8350, volt_reg) & WM8350_LDO1_VSEL_MASK;
|
|
}
|
|
|
|
static int wm8350_ldo_list_voltage(struct regulator_dev *rdev,
|
|
unsigned selector)
|
|
{
|
|
if (selector > WM8350_LDO1_VSEL_MASK)
|
|
return -EINVAL;
|
|
return wm8350_ldo_val_to_mvolts(selector) * 1000;
|
|
}
|
|
|
|
int wm8350_dcdc_set_slot(struct wm8350 *wm8350, int dcdc, u16 start,
|
|
u16 stop, u16 fault)
|
|
{
|
|
int slot_reg;
|
|
u16 val;
|
|
|
|
dev_dbg(wm8350->dev, "%s %d start %d stop %d\n",
|
|
__func__, dcdc, start, stop);
|
|
|
|
/* slot valid ? */
|
|
if (start > 15 || stop > 15)
|
|
return -EINVAL;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
slot_reg = WM8350_DCDC1_TIMEOUTS;
|
|
break;
|
|
case WM8350_DCDC_2:
|
|
slot_reg = WM8350_DCDC2_TIMEOUTS;
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
slot_reg = WM8350_DCDC3_TIMEOUTS;
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
slot_reg = WM8350_DCDC4_TIMEOUTS;
|
|
break;
|
|
case WM8350_DCDC_5:
|
|
slot_reg = WM8350_DCDC5_TIMEOUTS;
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
slot_reg = WM8350_DCDC6_TIMEOUTS;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
val = wm8350_reg_read(wm8350, slot_reg) &
|
|
~(WM8350_DC1_ENSLOT_MASK | WM8350_DC1_SDSLOT_MASK |
|
|
WM8350_DC1_ERRACT_MASK);
|
|
wm8350_reg_write(wm8350, slot_reg,
|
|
val | (start << WM8350_DC1_ENSLOT_SHIFT) |
|
|
(stop << WM8350_DC1_SDSLOT_SHIFT) |
|
|
(fault << WM8350_DC1_ERRACT_SHIFT));
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wm8350_dcdc_set_slot);
|
|
|
|
int wm8350_ldo_set_slot(struct wm8350 *wm8350, int ldo, u16 start, u16 stop)
|
|
{
|
|
int slot_reg;
|
|
u16 val;
|
|
|
|
dev_dbg(wm8350->dev, "%s %d start %d stop %d\n",
|
|
__func__, ldo, start, stop);
|
|
|
|
/* slot valid ? */
|
|
if (start > 15 || stop > 15)
|
|
return -EINVAL;
|
|
|
|
switch (ldo) {
|
|
case WM8350_LDO_1:
|
|
slot_reg = WM8350_LDO1_TIMEOUTS;
|
|
break;
|
|
case WM8350_LDO_2:
|
|
slot_reg = WM8350_LDO2_TIMEOUTS;
|
|
break;
|
|
case WM8350_LDO_3:
|
|
slot_reg = WM8350_LDO3_TIMEOUTS;
|
|
break;
|
|
case WM8350_LDO_4:
|
|
slot_reg = WM8350_LDO4_TIMEOUTS;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
val = wm8350_reg_read(wm8350, slot_reg) & ~WM8350_LDO1_SDSLOT_MASK;
|
|
wm8350_reg_write(wm8350, slot_reg, val | ((start << 10) | (stop << 6)));
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wm8350_ldo_set_slot);
|
|
|
|
int wm8350_dcdc25_set_mode(struct wm8350 *wm8350, int dcdc, u16 mode,
|
|
u16 ilim, u16 ramp, u16 feedback)
|
|
{
|
|
u16 val;
|
|
|
|
dev_dbg(wm8350->dev, "%s %d mode: %s %s\n", __func__, dcdc,
|
|
mode ? "normal" : "boost", ilim ? "low" : "normal");
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_2:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
|
|
& ~(WM8350_DC2_MODE_MASK | WM8350_DC2_ILIM_MASK |
|
|
WM8350_DC2_RMP_MASK | WM8350_DC2_FBSRC_MASK);
|
|
wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
|
|
(mode << WM8350_DC2_MODE_SHIFT) |
|
|
(ilim << WM8350_DC2_ILIM_SHIFT) |
|
|
(ramp << WM8350_DC2_RMP_SHIFT) |
|
|
(feedback << WM8350_DC2_FBSRC_SHIFT));
|
|
break;
|
|
case WM8350_DCDC_5:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
|
|
& ~(WM8350_DC5_MODE_MASK | WM8350_DC5_ILIM_MASK |
|
|
WM8350_DC5_RMP_MASK | WM8350_DC5_FBSRC_MASK);
|
|
wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
|
|
(mode << WM8350_DC5_MODE_SHIFT) |
|
|
(ilim << WM8350_DC5_ILIM_SHIFT) |
|
|
(ramp << WM8350_DC5_RMP_SHIFT) |
|
|
(feedback << WM8350_DC5_FBSRC_SHIFT));
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wm8350_dcdc25_set_mode);
|
|
|
|
static int wm8350_dcdc_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 shift;
|
|
|
|
if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
|
|
return -EINVAL;
|
|
|
|
shift = dcdc - WM8350_DCDC_1;
|
|
wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_dcdc_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 shift;
|
|
|
|
if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
|
|
return -EINVAL;
|
|
|
|
shift = dcdc - WM8350_DCDC_1;
|
|
wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_ldo_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int ldo = rdev_get_id(rdev);
|
|
u16 shift;
|
|
|
|
if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4)
|
|
return -EINVAL;
|
|
|
|
shift = (ldo - WM8350_LDO_1) + 8;
|
|
wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_ldo_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int ldo = rdev_get_id(rdev);
|
|
u16 shift;
|
|
|
|
if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4)
|
|
return -EINVAL;
|
|
|
|
shift = (ldo - WM8350_LDO_1) + 8;
|
|
wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
|
|
return 0;
|
|
}
|
|
|
|
static int force_continuous_enable(struct wm8350 *wm8350, int dcdc, int enable)
|
|
{
|
|
int reg = 0, ret;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
reg = WM8350_DCDC1_FORCE_PWM;
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
reg = WM8350_DCDC3_FORCE_PWM;
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
reg = WM8350_DCDC4_FORCE_PWM;
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
reg = WM8350_DCDC6_FORCE_PWM;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (enable)
|
|
ret = wm8350_set_bits(wm8350, reg,
|
|
WM8350_DCDC1_FORCE_PWM_ENA);
|
|
else
|
|
ret = wm8350_clear_bits(wm8350, reg,
|
|
WM8350_DCDC1_FORCE_PWM_ENA);
|
|
return ret;
|
|
}
|
|
|
|
static int wm8350_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 val;
|
|
|
|
if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
|
|
return -EINVAL;
|
|
|
|
if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5)
|
|
return -EINVAL;
|
|
|
|
val = 1 << (dcdc - WM8350_DCDC_1);
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_FAST:
|
|
/* force continuous mode */
|
|
wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
|
|
wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
|
|
force_continuous_enable(wm8350, dcdc, 1);
|
|
break;
|
|
case REGULATOR_MODE_NORMAL:
|
|
/* active / pulse skipping */
|
|
wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
|
|
wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
|
|
force_continuous_enable(wm8350, dcdc, 0);
|
|
break;
|
|
case REGULATOR_MODE_IDLE:
|
|
/* standby mode */
|
|
force_continuous_enable(wm8350, dcdc, 0);
|
|
wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
|
|
wm8350_clear_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
|
|
break;
|
|
case REGULATOR_MODE_STANDBY:
|
|
/* LDO mode */
|
|
force_continuous_enable(wm8350, dcdc, 0);
|
|
wm8350_set_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int wm8350_dcdc_get_mode(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev);
|
|
u16 mask, sleep, active, force;
|
|
int mode = REGULATOR_MODE_NORMAL;
|
|
int reg;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
reg = WM8350_DCDC1_FORCE_PWM;
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
reg = WM8350_DCDC3_FORCE_PWM;
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
reg = WM8350_DCDC4_FORCE_PWM;
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
reg = WM8350_DCDC6_FORCE_PWM;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
mask = 1 << (dcdc - WM8350_DCDC_1);
|
|
active = wm8350_reg_read(wm8350, WM8350_DCDC_ACTIVE_OPTIONS) & mask;
|
|
force = wm8350_reg_read(wm8350, reg) & WM8350_DCDC1_FORCE_PWM_ENA;
|
|
sleep = wm8350_reg_read(wm8350, WM8350_DCDC_SLEEP_OPTIONS) & mask;
|
|
|
|
dev_dbg(wm8350->dev, "mask %x active %x sleep %x force %x",
|
|
mask, active, sleep, force);
|
|
|
|
if (active && !sleep) {
|
|
if (force)
|
|
mode = REGULATOR_MODE_FAST;
|
|
else
|
|
mode = REGULATOR_MODE_NORMAL;
|
|
} else if (!active && !sleep)
|
|
mode = REGULATOR_MODE_IDLE;
|
|
else if (sleep)
|
|
mode = REGULATOR_MODE_STANDBY;
|
|
|
|
return mode;
|
|
}
|
|
|
|
static unsigned int wm8350_ldo_get_mode(struct regulator_dev *rdev)
|
|
{
|
|
return REGULATOR_MODE_NORMAL;
|
|
}
|
|
|
|
struct wm8350_dcdc_efficiency {
|
|
int uA_load_min;
|
|
int uA_load_max;
|
|
unsigned int mode;
|
|
};
|
|
|
|
static const struct wm8350_dcdc_efficiency dcdc1_6_efficiency[] = {
|
|
{0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */
|
|
{10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */
|
|
{100000, 1000000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */
|
|
{-1, -1, REGULATOR_MODE_NORMAL},
|
|
};
|
|
|
|
static const struct wm8350_dcdc_efficiency dcdc3_4_efficiency[] = {
|
|
{0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */
|
|
{10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */
|
|
{100000, 800000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */
|
|
{-1, -1, REGULATOR_MODE_NORMAL},
|
|
};
|
|
|
|
static unsigned int get_mode(int uA, const struct wm8350_dcdc_efficiency *eff)
|
|
{
|
|
int i = 0;
|
|
|
|
while (eff[i].uA_load_min != -1) {
|
|
if (uA >= eff[i].uA_load_min && uA <= eff[i].uA_load_max)
|
|
return eff[i].mode;
|
|
}
|
|
return REGULATOR_MODE_NORMAL;
|
|
}
|
|
|
|
/* Query the regulator for it's most efficient mode @ uV,uA
|
|
* WM8350 regulator efficiency is pretty similar over
|
|
* different input and output uV.
|
|
*/
|
|
static unsigned int wm8350_dcdc_get_optimum_mode(struct regulator_dev *rdev,
|
|
int input_uV, int output_uV,
|
|
int output_uA)
|
|
{
|
|
int dcdc = rdev_get_id(rdev), mode;
|
|
|
|
switch (dcdc) {
|
|
case WM8350_DCDC_1:
|
|
case WM8350_DCDC_6:
|
|
mode = get_mode(output_uA, dcdc1_6_efficiency);
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
case WM8350_DCDC_4:
|
|
mode = get_mode(output_uA, dcdc3_4_efficiency);
|
|
break;
|
|
default:
|
|
mode = REGULATOR_MODE_NORMAL;
|
|
break;
|
|
}
|
|
return mode;
|
|
}
|
|
|
|
static int wm8350_dcdc_is_enabled(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int dcdc = rdev_get_id(rdev), shift;
|
|
|
|
if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
|
|
return -EINVAL;
|
|
|
|
shift = dcdc - WM8350_DCDC_1;
|
|
return wm8350_reg_read(wm8350, WM8350_DCDC_LDO_REQUESTED)
|
|
& (1 << shift);
|
|
}
|
|
|
|
static int wm8350_ldo_is_enabled(struct regulator_dev *rdev)
|
|
{
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
int ldo = rdev_get_id(rdev), shift;
|
|
|
|
if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4)
|
|
return -EINVAL;
|
|
|
|
shift = (ldo - WM8350_LDO_1) + 8;
|
|
return wm8350_reg_read(wm8350, WM8350_DCDC_LDO_REQUESTED)
|
|
& (1 << shift);
|
|
}
|
|
|
|
static struct regulator_ops wm8350_dcdc_ops = {
|
|
.set_voltage = wm8350_dcdc_set_voltage,
|
|
.get_voltage_sel = wm8350_dcdc_get_voltage_sel,
|
|
.list_voltage = wm8350_dcdc_list_voltage,
|
|
.enable = wm8350_dcdc_enable,
|
|
.disable = wm8350_dcdc_disable,
|
|
.get_mode = wm8350_dcdc_get_mode,
|
|
.set_mode = wm8350_dcdc_set_mode,
|
|
.get_optimum_mode = wm8350_dcdc_get_optimum_mode,
|
|
.is_enabled = wm8350_dcdc_is_enabled,
|
|
.set_suspend_voltage = wm8350_dcdc_set_suspend_voltage,
|
|
.set_suspend_enable = wm8350_dcdc_set_suspend_enable,
|
|
.set_suspend_disable = wm8350_dcdc_set_suspend_disable,
|
|
.set_suspend_mode = wm8350_dcdc_set_suspend_mode,
|
|
};
|
|
|
|
static struct regulator_ops wm8350_dcdc2_5_ops = {
|
|
.enable = wm8350_dcdc_enable,
|
|
.disable = wm8350_dcdc_disable,
|
|
.is_enabled = wm8350_dcdc_is_enabled,
|
|
.set_suspend_enable = wm8350_dcdc25_set_suspend_enable,
|
|
.set_suspend_disable = wm8350_dcdc25_set_suspend_disable,
|
|
};
|
|
|
|
static struct regulator_ops wm8350_ldo_ops = {
|
|
.set_voltage = wm8350_ldo_set_voltage,
|
|
.get_voltage_sel = wm8350_ldo_get_voltage_sel,
|
|
.list_voltage = wm8350_ldo_list_voltage,
|
|
.enable = wm8350_ldo_enable,
|
|
.disable = wm8350_ldo_disable,
|
|
.is_enabled = wm8350_ldo_is_enabled,
|
|
.get_mode = wm8350_ldo_get_mode,
|
|
.set_suspend_voltage = wm8350_ldo_set_suspend_voltage,
|
|
.set_suspend_enable = wm8350_ldo_set_suspend_enable,
|
|
.set_suspend_disable = wm8350_ldo_set_suspend_disable,
|
|
};
|
|
|
|
static struct regulator_ops wm8350_isink_ops = {
|
|
.set_current_limit = wm8350_isink_set_current,
|
|
.get_current_limit = wm8350_isink_get_current,
|
|
.enable = wm8350_isink_enable,
|
|
.disable = wm8350_isink_disable,
|
|
.is_enabled = wm8350_isink_is_enabled,
|
|
.enable_time = wm8350_isink_enable_time,
|
|
};
|
|
|
|
static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
|
|
{
|
|
.name = "DCDC1",
|
|
.id = WM8350_DCDC_1,
|
|
.ops = &wm8350_dcdc_ops,
|
|
.irq = WM8350_IRQ_UV_DC1,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_DCDC_MAX_VSEL + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "DCDC2",
|
|
.id = WM8350_DCDC_2,
|
|
.ops = &wm8350_dcdc2_5_ops,
|
|
.irq = WM8350_IRQ_UV_DC2,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "DCDC3",
|
|
.id = WM8350_DCDC_3,
|
|
.ops = &wm8350_dcdc_ops,
|
|
.irq = WM8350_IRQ_UV_DC3,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_DCDC_MAX_VSEL + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "DCDC4",
|
|
.id = WM8350_DCDC_4,
|
|
.ops = &wm8350_dcdc_ops,
|
|
.irq = WM8350_IRQ_UV_DC4,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_DCDC_MAX_VSEL + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "DCDC5",
|
|
.id = WM8350_DCDC_5,
|
|
.ops = &wm8350_dcdc2_5_ops,
|
|
.irq = WM8350_IRQ_UV_DC5,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "DCDC6",
|
|
.id = WM8350_DCDC_6,
|
|
.ops = &wm8350_dcdc_ops,
|
|
.irq = WM8350_IRQ_UV_DC6,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_DCDC_MAX_VSEL + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "LDO1",
|
|
.id = WM8350_LDO_1,
|
|
.ops = &wm8350_ldo_ops,
|
|
.irq = WM8350_IRQ_UV_LDO1,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_LDO1_VSEL_MASK + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "LDO2",
|
|
.id = WM8350_LDO_2,
|
|
.ops = &wm8350_ldo_ops,
|
|
.irq = WM8350_IRQ_UV_LDO2,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_LDO2_VSEL_MASK + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "LDO3",
|
|
.id = WM8350_LDO_3,
|
|
.ops = &wm8350_ldo_ops,
|
|
.irq = WM8350_IRQ_UV_LDO3,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_LDO3_VSEL_MASK + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "LDO4",
|
|
.id = WM8350_LDO_4,
|
|
.ops = &wm8350_ldo_ops,
|
|
.irq = WM8350_IRQ_UV_LDO4,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = WM8350_LDO4_VSEL_MASK + 1,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "ISINKA",
|
|
.id = WM8350_ISINK_A,
|
|
.ops = &wm8350_isink_ops,
|
|
.irq = WM8350_IRQ_CS1,
|
|
.type = REGULATOR_CURRENT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "ISINKB",
|
|
.id = WM8350_ISINK_B,
|
|
.ops = &wm8350_isink_ops,
|
|
.irq = WM8350_IRQ_CS2,
|
|
.type = REGULATOR_CURRENT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static irqreturn_t pmic_uv_handler(int irq, void *data)
|
|
{
|
|
struct regulator_dev *rdev = (struct regulator_dev *)data;
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
|
|
mutex_lock(&rdev->mutex);
|
|
if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2)
|
|
regulator_notifier_call_chain(rdev,
|
|
REGULATOR_EVENT_REGULATION_OUT,
|
|
wm8350);
|
|
else
|
|
regulator_notifier_call_chain(rdev,
|
|
REGULATOR_EVENT_UNDER_VOLTAGE,
|
|
wm8350);
|
|
mutex_unlock(&rdev->mutex);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int wm8350_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev);
|
|
struct regulator_config config = { };
|
|
struct regulator_dev *rdev;
|
|
int ret;
|
|
u16 val;
|
|
|
|
if (pdev->id < WM8350_DCDC_1 || pdev->id > WM8350_ISINK_B)
|
|
return -ENODEV;
|
|
|
|
/* do any regulatior specific init */
|
|
switch (pdev->id) {
|
|
case WM8350_DCDC_1:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER);
|
|
wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
break;
|
|
case WM8350_DCDC_3:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER);
|
|
wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
break;
|
|
case WM8350_DCDC_4:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER);
|
|
wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
break;
|
|
case WM8350_DCDC_6:
|
|
val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER);
|
|
wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
|
|
break;
|
|
}
|
|
|
|
config.dev = &pdev->dev;
|
|
config.init_data = pdev->dev.platform_data;
|
|
config.driver_data = dev_get_drvdata(&pdev->dev);
|
|
|
|
/* register regulator */
|
|
rdev = regulator_register(&wm8350_reg[pdev->id], &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "failed to register %s\n",
|
|
wm8350_reg[pdev->id].name);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
/* register regulator IRQ */
|
|
ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq,
|
|
pmic_uv_handler, 0, "UV", rdev);
|
|
if (ret < 0) {
|
|
regulator_unregister(rdev);
|
|
dev_err(&pdev->dev, "failed to register regulator %s IRQ\n",
|
|
wm8350_reg[pdev->id].name);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
struct regulator_dev *rdev = platform_get_drvdata(pdev);
|
|
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
|
|
|
|
wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq, rdev);
|
|
|
|
regulator_unregister(rdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wm8350_register_regulator(struct wm8350 *wm8350, int reg,
|
|
struct regulator_init_data *initdata)
|
|
{
|
|
struct platform_device *pdev;
|
|
int ret;
|
|
if (reg < 0 || reg >= NUM_WM8350_REGULATORS)
|
|
return -EINVAL;
|
|
|
|
if (wm8350->pmic.pdev[reg])
|
|
return -EBUSY;
|
|
|
|
if (reg >= WM8350_DCDC_1 && reg <= WM8350_DCDC_6 &&
|
|
reg > wm8350->pmic.max_dcdc)
|
|
return -ENODEV;
|
|
if (reg >= WM8350_ISINK_A && reg <= WM8350_ISINK_B &&
|
|
reg > wm8350->pmic.max_isink)
|
|
return -ENODEV;
|
|
|
|
pdev = platform_device_alloc("wm8350-regulator", reg);
|
|
if (!pdev)
|
|
return -ENOMEM;
|
|
|
|
wm8350->pmic.pdev[reg] = pdev;
|
|
|
|
initdata->driver_data = wm8350;
|
|
|
|
pdev->dev.platform_data = initdata;
|
|
pdev->dev.parent = wm8350->dev;
|
|
platform_set_drvdata(pdev, wm8350);
|
|
|
|
ret = platform_device_add(pdev);
|
|
|
|
if (ret != 0) {
|
|
dev_err(wm8350->dev, "Failed to register regulator %d: %d\n",
|
|
reg, ret);
|
|
platform_device_put(pdev);
|
|
wm8350->pmic.pdev[reg] = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wm8350_register_regulator);
|
|
|
|
/**
|
|
* wm8350_register_led - Register a WM8350 LED output
|
|
*
|
|
* @param wm8350 The WM8350 device to configure.
|
|
* @param lednum LED device index to create.
|
|
* @param dcdc The DCDC to use for the LED.
|
|
* @param isink The ISINK to use for the LED.
|
|
* @param pdata Configuration for the LED.
|
|
*
|
|
* The WM8350 supports the use of an ISINK together with a DCDC to
|
|
* provide a power-efficient LED driver. This function registers the
|
|
* regulators and instantiates the platform device for a LED. The
|
|
* operating modes for the LED regulators must be configured using
|
|
* wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and
|
|
* wm8350_dcdc_set_slot() prior to calling this function.
|
|
*/
|
|
int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink,
|
|
struct wm8350_led_platform_data *pdata)
|
|
{
|
|
struct wm8350_led *led;
|
|
struct platform_device *pdev;
|
|
int ret;
|
|
|
|
if (lednum >= ARRAY_SIZE(wm8350->pmic.led) || lednum < 0) {
|
|
dev_err(wm8350->dev, "Invalid LED index %d\n", lednum);
|
|
return -ENODEV;
|
|
}
|
|
|
|
led = &wm8350->pmic.led[lednum];
|
|
|
|
if (led->pdev) {
|
|
dev_err(wm8350->dev, "LED %d already allocated\n", lednum);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pdev = platform_device_alloc("wm8350-led", lednum);
|
|
if (pdev == NULL) {
|
|
dev_err(wm8350->dev, "Failed to allocate LED %d\n", lednum);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
led->isink_consumer.dev_name = dev_name(&pdev->dev);
|
|
led->isink_consumer.supply = "led_isink";
|
|
led->isink_init.num_consumer_supplies = 1;
|
|
led->isink_init.consumer_supplies = &led->isink_consumer;
|
|
led->isink_init.constraints.min_uA = 0;
|
|
led->isink_init.constraints.max_uA = pdata->max_uA;
|
|
led->isink_init.constraints.valid_ops_mask
|
|
= REGULATOR_CHANGE_CURRENT | REGULATOR_CHANGE_STATUS;
|
|
led->isink_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
|
|
ret = wm8350_register_regulator(wm8350, isink, &led->isink_init);
|
|
if (ret != 0) {
|
|
platform_device_put(pdev);
|
|
return ret;
|
|
}
|
|
|
|
led->dcdc_consumer.dev_name = dev_name(&pdev->dev);
|
|
led->dcdc_consumer.supply = "led_vcc";
|
|
led->dcdc_init.num_consumer_supplies = 1;
|
|
led->dcdc_init.consumer_supplies = &led->dcdc_consumer;
|
|
led->dcdc_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
|
|
led->dcdc_init.constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS;
|
|
ret = wm8350_register_regulator(wm8350, dcdc, &led->dcdc_init);
|
|
if (ret != 0) {
|
|
platform_device_put(pdev);
|
|
return ret;
|
|
}
|
|
|
|
switch (isink) {
|
|
case WM8350_ISINK_A:
|
|
wm8350->pmic.isink_A_dcdc = dcdc;
|
|
break;
|
|
case WM8350_ISINK_B:
|
|
wm8350->pmic.isink_B_dcdc = dcdc;
|
|
break;
|
|
}
|
|
|
|
pdev->dev.platform_data = pdata;
|
|
pdev->dev.parent = wm8350->dev;
|
|
ret = platform_device_add(pdev);
|
|
if (ret != 0) {
|
|
dev_err(wm8350->dev, "Failed to register LED %d: %d\n",
|
|
lednum, ret);
|
|
platform_device_put(pdev);
|
|
return ret;
|
|
}
|
|
|
|
led->pdev = pdev;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wm8350_register_led);
|
|
|
|
static struct platform_driver wm8350_regulator_driver = {
|
|
.probe = wm8350_regulator_probe,
|
|
.remove = wm8350_regulator_remove,
|
|
.driver = {
|
|
.name = "wm8350-regulator",
|
|
},
|
|
};
|
|
|
|
static int __init wm8350_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&wm8350_regulator_driver);
|
|
}
|
|
subsys_initcall(wm8350_regulator_init);
|
|
|
|
static void __exit wm8350_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&wm8350_regulator_driver);
|
|
}
|
|
module_exit(wm8350_regulator_exit);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Liam Girdwood");
|
|
MODULE_DESCRIPTION("WM8350 voltage and current regulator driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:wm8350-regulator");
|