mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
202f4f53e5
MAX8952 PMIC is used to provide voltage output between 770mV - 1400mV with DVS support. In this initial release, users can set voltages for four DVS modes, RAMP delay values, and SYNC frequency. Controlling FPWM/SYNC_MODE/Pull-Down/Ramp Modes and reading CHIP_ID is not supported in this release. If GPIO of EN is not valid in platform data, the driver assumes that it is always-on. If GPIO of VID0 or VID1 is invalid, the driver pulls down VID0 and VID1 to fix DVS mode as 0 and disables DVS support. We assume that V_OUT is capable to provide every voltage from 770mV to 1.40V in 10mV steps although the data sheet has some ambiguity on it. Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> -- v2: - Style correction - Can accept platform_data with invalid GPIOs - Removed unnecessary features - Improved error handling Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
136 lines
2.9 KiB
C
136 lines
2.9 KiB
C
/*
|
|
* max8952.h - Voltage regulation for the Maxim 8952
|
|
*
|
|
* Copyright (C) 2010 Samsung Electrnoics
|
|
* MyungJoo Ham <myungjoo.ham@samsung.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef REGULATOR_MAX8952
|
|
#define REGULATOR_MAX8952
|
|
|
|
#include <linux/regulator/machine.h>
|
|
|
|
enum {
|
|
MAX8952_DVS_MODE0,
|
|
MAX8952_DVS_MODE1,
|
|
MAX8952_DVS_MODE2,
|
|
MAX8952_DVS_MODE3,
|
|
};
|
|
|
|
enum {
|
|
MAX8952_DVS_770mV = 0,
|
|
MAX8952_DVS_780mV,
|
|
MAX8952_DVS_790mV,
|
|
MAX8952_DVS_800mV,
|
|
MAX8952_DVS_810mV,
|
|
MAX8952_DVS_820mV,
|
|
MAX8952_DVS_830mV,
|
|
MAX8952_DVS_840mV,
|
|
MAX8952_DVS_850mV,
|
|
MAX8952_DVS_860mV,
|
|
MAX8952_DVS_870mV,
|
|
MAX8952_DVS_880mV,
|
|
MAX8952_DVS_890mV,
|
|
MAX8952_DVS_900mV,
|
|
MAX8952_DVS_910mV,
|
|
MAX8952_DVS_920mV,
|
|
MAX8952_DVS_930mV,
|
|
MAX8952_DVS_940mV,
|
|
MAX8952_DVS_950mV,
|
|
MAX8952_DVS_960mV,
|
|
MAX8952_DVS_970mV,
|
|
MAX8952_DVS_980mV,
|
|
MAX8952_DVS_990mV,
|
|
MAX8952_DVS_1000mV,
|
|
MAX8952_DVS_1010mV,
|
|
MAX8952_DVS_1020mV,
|
|
MAX8952_DVS_1030mV,
|
|
MAX8952_DVS_1040mV,
|
|
MAX8952_DVS_1050mV,
|
|
MAX8952_DVS_1060mV,
|
|
MAX8952_DVS_1070mV,
|
|
MAX8952_DVS_1080mV,
|
|
MAX8952_DVS_1090mV,
|
|
MAX8952_DVS_1100mV,
|
|
MAX8952_DVS_1110mV,
|
|
MAX8952_DVS_1120mV,
|
|
MAX8952_DVS_1130mV,
|
|
MAX8952_DVS_1140mV,
|
|
MAX8952_DVS_1150mV,
|
|
MAX8952_DVS_1160mV,
|
|
MAX8952_DVS_1170mV,
|
|
MAX8952_DVS_1180mV,
|
|
MAX8952_DVS_1190mV,
|
|
MAX8952_DVS_1200mV,
|
|
MAX8952_DVS_1210mV,
|
|
MAX8952_DVS_1220mV,
|
|
MAX8952_DVS_1230mV,
|
|
MAX8952_DVS_1240mV,
|
|
MAX8952_DVS_1250mV,
|
|
MAX8952_DVS_1260mV,
|
|
MAX8952_DVS_1270mV,
|
|
MAX8952_DVS_1280mV,
|
|
MAX8952_DVS_1290mV,
|
|
MAX8952_DVS_1300mV,
|
|
MAX8952_DVS_1310mV,
|
|
MAX8952_DVS_1320mV,
|
|
MAX8952_DVS_1330mV,
|
|
MAX8952_DVS_1340mV,
|
|
MAX8952_DVS_1350mV,
|
|
MAX8952_DVS_1360mV,
|
|
MAX8952_DVS_1370mV,
|
|
MAX8952_DVS_1380mV,
|
|
MAX8952_DVS_1390mV,
|
|
MAX8952_DVS_1400mV,
|
|
};
|
|
|
|
enum {
|
|
MAX8952_SYNC_FREQ_26MHZ, /* Default */
|
|
MAX8952_SYNC_FREQ_13MHZ,
|
|
MAX8952_SYNC_FREQ_19_2MHZ,
|
|
};
|
|
|
|
enum {
|
|
MAX8952_RAMP_32mV_us = 0, /* Default */
|
|
MAX8952_RAMP_16mV_us,
|
|
MAX8952_RAMP_8mV_us,
|
|
MAX8952_RAMP_4mV_us,
|
|
MAX8952_RAMP_2mV_us,
|
|
MAX8952_RAMP_1mV_us,
|
|
MAX8952_RAMP_0_5mV_us,
|
|
MAX8952_RAMP_0_25mV_us,
|
|
};
|
|
|
|
#define MAX8952_NUM_DVS_MODE 4
|
|
|
|
struct max8952_platform_data {
|
|
int gpio_vid0;
|
|
int gpio_vid1;
|
|
int gpio_en;
|
|
|
|
u8 default_mode;
|
|
u8 dvs_mode[MAX8952_NUM_DVS_MODE]; /* MAX8952_DVS_MODEx_XXXXmV */
|
|
|
|
u8 sync_freq;
|
|
u8 ramp_speed;
|
|
|
|
struct regulator_init_data reg_data;
|
|
};
|
|
|
|
|
|
#endif /* REGULATOR_MAX8952 */
|