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1280 lines
33 KiB
1280 lines
33 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* tps65910.c -- TI tps65910 |
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* |
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* Copyright 2010 Texas Instruments Inc. |
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* |
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* Author: Graeme Gregory <[email protected]> |
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* Author: Jorge Eduardo Candelaria <[email protected]> |
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*/ |
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|
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/err.h> |
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#include <linux/of.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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#include <linux/slab.h> |
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#include <linux/gpio.h> |
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#include <linux/mfd/tps65910.h> |
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#include <linux/regulator/of_regulator.h> |
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#define TPS65910_SUPPLY_STATE_ENABLED 0x1 |
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#define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 | \ |
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TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 | \ |
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TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 | \ |
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TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) |
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/* supported VIO voltages in microvolts */ |
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static const unsigned int VIO_VSEL_table[] = { |
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1500000, 1800000, 2500000, 3300000, |
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}; |
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/* VSEL tables for TPS65910 specific LDOs and dcdc's */ |
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|
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/* supported VRTC voltages in microvolts */ |
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static const unsigned int VRTC_VSEL_table[] = { |
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1800000, |
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}; |
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/* supported VDD3 voltages in microvolts */ |
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static const unsigned int VDD3_VSEL_table[] = { |
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5000000, |
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}; |
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/* supported VDIG1 voltages in microvolts */ |
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static const unsigned int VDIG1_VSEL_table[] = { |
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1200000, 1500000, 1800000, 2700000, |
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}; |
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/* supported VDIG2 voltages in microvolts */ |
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static const unsigned int VDIG2_VSEL_table[] = { |
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1000000, 1100000, 1200000, 1800000, |
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}; |
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/* supported VPLL voltages in microvolts */ |
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static const unsigned int VPLL_VSEL_table[] = { |
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1000000, 1100000, 1800000, 2500000, |
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}; |
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/* supported VDAC voltages in microvolts */ |
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static const unsigned int VDAC_VSEL_table[] = { |
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1800000, 2600000, 2800000, 2850000, |
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}; |
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/* supported VAUX1 voltages in microvolts */ |
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static const unsigned int VAUX1_VSEL_table[] = { |
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1800000, 2500000, 2800000, 2850000, |
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}; |
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/* supported VAUX2 voltages in microvolts */ |
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static const unsigned int VAUX2_VSEL_table[] = { |
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1800000, 2800000, 2900000, 3300000, |
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}; |
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|
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/* supported VAUX33 voltages in microvolts */ |
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static const unsigned int VAUX33_VSEL_table[] = { |
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1800000, 2000000, 2800000, 3300000, |
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}; |
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/* supported VMMC voltages in microvolts */ |
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static const unsigned int VMMC_VSEL_table[] = { |
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1800000, 2800000, 3000000, 3300000, |
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}; |
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/* supported BBCH voltages in microvolts */ |
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static const unsigned int VBB_VSEL_table[] = { |
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3000000, 2520000, 3150000, 5000000, |
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}; |
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struct tps_info { |
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const char *name; |
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const char *vin_name; |
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u8 n_voltages; |
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const unsigned int *voltage_table; |
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int enable_time_us; |
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}; |
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static struct tps_info tps65910_regs[] = { |
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{ |
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.name = "vrtc", |
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.vin_name = "vcc7", |
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.n_voltages = ARRAY_SIZE(VRTC_VSEL_table), |
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.voltage_table = VRTC_VSEL_table, |
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.enable_time_us = 2200, |
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}, |
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{ |
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.name = "vio", |
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.vin_name = "vccio", |
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.n_voltages = ARRAY_SIZE(VIO_VSEL_table), |
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.voltage_table = VIO_VSEL_table, |
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.enable_time_us = 350, |
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}, |
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{ |
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.name = "vdd1", |
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.vin_name = "vcc1", |
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.enable_time_us = 350, |
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}, |
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{ |
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.name = "vdd2", |
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.vin_name = "vcc2", |
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.enable_time_us = 350, |
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}, |
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{ |
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.name = "vdd3", |
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.n_voltages = ARRAY_SIZE(VDD3_VSEL_table), |
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.voltage_table = VDD3_VSEL_table, |
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.enable_time_us = 200, |
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}, |
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{ |
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.name = "vdig1", |
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.vin_name = "vcc6", |
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.n_voltages = ARRAY_SIZE(VDIG1_VSEL_table), |
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.voltage_table = VDIG1_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vdig2", |
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.vin_name = "vcc6", |
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.n_voltages = ARRAY_SIZE(VDIG2_VSEL_table), |
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.voltage_table = VDIG2_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vpll", |
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.vin_name = "vcc5", |
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.n_voltages = ARRAY_SIZE(VPLL_VSEL_table), |
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.voltage_table = VPLL_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vdac", |
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.vin_name = "vcc5", |
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.n_voltages = ARRAY_SIZE(VDAC_VSEL_table), |
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.voltage_table = VDAC_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vaux1", |
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.vin_name = "vcc4", |
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.n_voltages = ARRAY_SIZE(VAUX1_VSEL_table), |
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.voltage_table = VAUX1_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vaux2", |
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.vin_name = "vcc4", |
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.n_voltages = ARRAY_SIZE(VAUX2_VSEL_table), |
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.voltage_table = VAUX2_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vaux33", |
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.vin_name = "vcc3", |
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.n_voltages = ARRAY_SIZE(VAUX33_VSEL_table), |
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.voltage_table = VAUX33_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vmmc", |
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.vin_name = "vcc3", |
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.n_voltages = ARRAY_SIZE(VMMC_VSEL_table), |
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.voltage_table = VMMC_VSEL_table, |
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.enable_time_us = 100, |
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}, |
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{ |
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.name = "vbb", |
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.vin_name = "vcc7", |
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.n_voltages = ARRAY_SIZE(VBB_VSEL_table), |
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.voltage_table = VBB_VSEL_table, |
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}, |
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}; |
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static struct tps_info tps65911_regs[] = { |
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{ |
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.name = "vrtc", |
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.vin_name = "vcc7", |
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.enable_time_us = 2200, |
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}, |
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{ |
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.name = "vio", |
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.vin_name = "vccio", |
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.n_voltages = ARRAY_SIZE(VIO_VSEL_table), |
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.voltage_table = VIO_VSEL_table, |
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.enable_time_us = 350, |
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}, |
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{ |
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.name = "vdd1", |
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.vin_name = "vcc1", |
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.n_voltages = 0x4C, |
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.enable_time_us = 350, |
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}, |
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{ |
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.name = "vdd2", |
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.vin_name = "vcc2", |
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.n_voltages = 0x4C, |
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.enable_time_us = 350, |
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}, |
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{ |
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.name = "vddctrl", |
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.n_voltages = 0x44, |
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.enable_time_us = 900, |
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}, |
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{ |
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.name = "ldo1", |
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.vin_name = "vcc6", |
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.n_voltages = 0x33, |
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.enable_time_us = 420, |
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}, |
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{ |
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.name = "ldo2", |
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.vin_name = "vcc6", |
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.n_voltages = 0x33, |
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.enable_time_us = 420, |
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}, |
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{ |
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.name = "ldo3", |
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.vin_name = "vcc5", |
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.n_voltages = 0x1A, |
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.enable_time_us = 230, |
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}, |
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{ |
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.name = "ldo4", |
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.vin_name = "vcc5", |
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.n_voltages = 0x33, |
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.enable_time_us = 230, |
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}, |
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{ |
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.name = "ldo5", |
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.vin_name = "vcc4", |
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.n_voltages = 0x1A, |
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.enable_time_us = 230, |
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}, |
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{ |
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.name = "ldo6", |
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.vin_name = "vcc3", |
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.n_voltages = 0x1A, |
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.enable_time_us = 230, |
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}, |
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{ |
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.name = "ldo7", |
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.vin_name = "vcc3", |
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.n_voltages = 0x1A, |
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.enable_time_us = 230, |
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}, |
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{ |
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.name = "ldo8", |
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.vin_name = "vcc3", |
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.n_voltages = 0x1A, |
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.enable_time_us = 230, |
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}, |
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}; |
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#define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits)) |
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static unsigned int tps65910_ext_sleep_control[] = { |
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0, |
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EXT_CONTROL_REG_BITS(VIO, 1, 0), |
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EXT_CONTROL_REG_BITS(VDD1, 1, 1), |
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EXT_CONTROL_REG_BITS(VDD2, 1, 2), |
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EXT_CONTROL_REG_BITS(VDD3, 1, 3), |
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EXT_CONTROL_REG_BITS(VDIG1, 0, 1), |
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EXT_CONTROL_REG_BITS(VDIG2, 0, 2), |
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EXT_CONTROL_REG_BITS(VPLL, 0, 6), |
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EXT_CONTROL_REG_BITS(VDAC, 0, 7), |
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EXT_CONTROL_REG_BITS(VAUX1, 0, 3), |
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EXT_CONTROL_REG_BITS(VAUX2, 0, 4), |
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EXT_CONTROL_REG_BITS(VAUX33, 0, 5), |
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EXT_CONTROL_REG_BITS(VMMC, 0, 0), |
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}; |
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static unsigned int tps65911_ext_sleep_control[] = { |
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0, |
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EXT_CONTROL_REG_BITS(VIO, 1, 0), |
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EXT_CONTROL_REG_BITS(VDD1, 1, 1), |
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EXT_CONTROL_REG_BITS(VDD2, 1, 2), |
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EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3), |
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EXT_CONTROL_REG_BITS(LDO1, 0, 1), |
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EXT_CONTROL_REG_BITS(LDO2, 0, 2), |
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EXT_CONTROL_REG_BITS(LDO3, 0, 7), |
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EXT_CONTROL_REG_BITS(LDO4, 0, 6), |
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EXT_CONTROL_REG_BITS(LDO5, 0, 3), |
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EXT_CONTROL_REG_BITS(LDO6, 0, 0), |
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EXT_CONTROL_REG_BITS(LDO7, 0, 5), |
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EXT_CONTROL_REG_BITS(LDO8, 0, 4), |
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}; |
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struct tps65910_reg { |
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struct regulator_desc *desc; |
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struct tps65910 *mfd; |
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struct regulator_dev **rdev; |
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struct tps_info **info; |
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int num_regulators; |
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int mode; |
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int (*get_ctrl_reg)(int); |
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unsigned int *ext_sleep_control; |
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unsigned int board_ext_control[TPS65910_NUM_REGS]; |
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}; |
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static int tps65910_get_ctrl_register(int id) |
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{ |
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switch (id) { |
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case TPS65910_REG_VRTC: |
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return TPS65910_VRTC; |
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case TPS65910_REG_VIO: |
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return TPS65910_VIO; |
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case TPS65910_REG_VDD1: |
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return TPS65910_VDD1; |
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case TPS65910_REG_VDD2: |
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return TPS65910_VDD2; |
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case TPS65910_REG_VDD3: |
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return TPS65910_VDD3; |
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case TPS65910_REG_VDIG1: |
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return TPS65910_VDIG1; |
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case TPS65910_REG_VDIG2: |
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return TPS65910_VDIG2; |
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case TPS65910_REG_VPLL: |
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return TPS65910_VPLL; |
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case TPS65910_REG_VDAC: |
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return TPS65910_VDAC; |
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case TPS65910_REG_VAUX1: |
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return TPS65910_VAUX1; |
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case TPS65910_REG_VAUX2: |
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return TPS65910_VAUX2; |
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case TPS65910_REG_VAUX33: |
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return TPS65910_VAUX33; |
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case TPS65910_REG_VMMC: |
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return TPS65910_VMMC; |
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case TPS65910_REG_VBB: |
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return TPS65910_BBCH; |
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default: |
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return -EINVAL; |
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} |
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} |
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|
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static int tps65911_get_ctrl_register(int id) |
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{ |
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switch (id) { |
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case TPS65910_REG_VRTC: |
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return TPS65910_VRTC; |
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case TPS65910_REG_VIO: |
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return TPS65910_VIO; |
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case TPS65910_REG_VDD1: |
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return TPS65910_VDD1; |
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case TPS65910_REG_VDD2: |
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return TPS65910_VDD2; |
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case TPS65911_REG_VDDCTRL: |
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return TPS65911_VDDCTRL; |
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case TPS65911_REG_LDO1: |
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return TPS65911_LDO1; |
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case TPS65911_REG_LDO2: |
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return TPS65911_LDO2; |
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case TPS65911_REG_LDO3: |
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return TPS65911_LDO3; |
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case TPS65911_REG_LDO4: |
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return TPS65911_LDO4; |
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case TPS65911_REG_LDO5: |
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return TPS65911_LDO5; |
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case TPS65911_REG_LDO6: |
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return TPS65911_LDO6; |
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case TPS65911_REG_LDO7: |
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return TPS65911_LDO7; |
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case TPS65911_REG_LDO8: |
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return TPS65911_LDO8; |
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default: |
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return -EINVAL; |
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} |
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} |
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|
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static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode) |
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{ |
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struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
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struct regmap *regmap = rdev_get_regmap(dev); |
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int reg, id = rdev_get_id(dev); |
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reg = pmic->get_ctrl_reg(id); |
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if (reg < 0) |
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return reg; |
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switch (mode) { |
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case REGULATOR_MODE_NORMAL: |
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return regmap_update_bits(regmap, reg, |
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LDO_ST_MODE_BIT | LDO_ST_ON_BIT, |
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LDO_ST_ON_BIT); |
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case REGULATOR_MODE_IDLE: |
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return regmap_set_bits(regmap, reg, |
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LDO_ST_ON_BIT | LDO_ST_MODE_BIT); |
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case REGULATOR_MODE_STANDBY: |
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return regmap_clear_bits(regmap, reg, LDO_ST_ON_BIT); |
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} |
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|
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return -EINVAL; |
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} |
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static unsigned int tps65910_get_mode(struct regulator_dev *dev) |
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{ |
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struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
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struct regmap *regmap = rdev_get_regmap(dev); |
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int ret, reg, value, id = rdev_get_id(dev); |
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reg = pmic->get_ctrl_reg(id); |
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if (reg < 0) |
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return reg; |
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ret = regmap_read(regmap, reg, &value); |
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if (ret < 0) |
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return ret; |
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|
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if (!(value & LDO_ST_ON_BIT)) |
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return REGULATOR_MODE_STANDBY; |
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else if (value & LDO_ST_MODE_BIT) |
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return REGULATOR_MODE_IDLE; |
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else |
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return REGULATOR_MODE_NORMAL; |
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} |
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|
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static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev) |
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{ |
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struct regmap *regmap = rdev_get_regmap(dev); |
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int ret, id = rdev_get_id(dev); |
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int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0; |
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|
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switch (id) { |
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case TPS65910_REG_VDD1: |
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ret = regmap_read(regmap, TPS65910_VDD1_OP, &opvsel); |
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if (ret < 0) |
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return ret; |
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ret = regmap_read(regmap, TPS65910_VDD1, &mult); |
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if (ret < 0) |
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return ret; |
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mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT; |
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ret = regmap_read(regmap, TPS65910_VDD1_SR, &srvsel); |
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if (ret < 0) |
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return ret; |
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sr = opvsel & VDD1_OP_CMD_MASK; |
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opvsel &= VDD1_OP_SEL_MASK; |
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srvsel &= VDD1_SR_SEL_MASK; |
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vselmax = 75; |
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break; |
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case TPS65910_REG_VDD2: |
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ret = regmap_read(regmap, TPS65910_VDD2_OP, &opvsel); |
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if (ret < 0) |
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return ret; |
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ret = regmap_read(regmap, TPS65910_VDD2, &mult); |
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if (ret < 0) |
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return ret; |
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mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT; |
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ret = regmap_read(regmap, TPS65910_VDD2_SR, &srvsel); |
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if (ret < 0) |
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return ret; |
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sr = opvsel & VDD2_OP_CMD_MASK; |
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opvsel &= VDD2_OP_SEL_MASK; |
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srvsel &= VDD2_SR_SEL_MASK; |
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vselmax = 75; |
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break; |
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case TPS65911_REG_VDDCTRL: |
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ret = regmap_read(regmap, TPS65911_VDDCTRL_OP, &opvsel); |
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if (ret < 0) |
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return ret; |
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ret = regmap_read(regmap, TPS65911_VDDCTRL_SR, &srvsel); |
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if (ret < 0) |
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return ret; |
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sr = opvsel & VDDCTRL_OP_CMD_MASK; |
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opvsel &= VDDCTRL_OP_SEL_MASK; |
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srvsel &= VDDCTRL_SR_SEL_MASK; |
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vselmax = 64; |
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break; |
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} |
|
|
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/* multiplier 0 == 1 but 2,3 normal */ |
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if (!mult) |
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mult = 1; |
|
|
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if (sr) { |
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/* normalise to valid range */ |
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if (srvsel < 3) |
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srvsel = 3; |
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if (srvsel > vselmax) |
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srvsel = vselmax; |
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return srvsel - 3; |
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} else { |
|
|
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/* normalise to valid range*/ |
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if (opvsel < 3) |
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opvsel = 3; |
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if (opvsel > vselmax) |
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opvsel = vselmax; |
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return opvsel - 3; |
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} |
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return -EINVAL; |
|
} |
|
|
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static int tps65910_get_voltage_sel(struct regulator_dev *dev) |
|
{ |
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struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
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struct regmap *regmap = rdev_get_regmap(dev); |
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int ret, reg, value, id = rdev_get_id(dev); |
|
|
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reg = pmic->get_ctrl_reg(id); |
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if (reg < 0) |
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return reg; |
|
|
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ret = regmap_read(regmap, reg, &value); |
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if (ret < 0) |
|
return ret; |
|
|
|
switch (id) { |
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case TPS65910_REG_VIO: |
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case TPS65910_REG_VDIG1: |
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case TPS65910_REG_VDIG2: |
|
case TPS65910_REG_VPLL: |
|
case TPS65910_REG_VDAC: |
|
case TPS65910_REG_VAUX1: |
|
case TPS65910_REG_VAUX2: |
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case TPS65910_REG_VAUX33: |
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case TPS65910_REG_VMMC: |
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value &= LDO_SEL_MASK; |
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value >>= LDO_SEL_SHIFT; |
|
break; |
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case TPS65910_REG_VBB: |
|
value &= BBCH_BBSEL_MASK; |
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value >>= BBCH_BBSEL_SHIFT; |
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break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return value; |
|
} |
|
|
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static int tps65910_get_voltage_vdd3(struct regulator_dev *dev) |
|
{ |
|
return dev->desc->volt_table[0]; |
|
} |
|
|
|
static int tps65911_get_voltage_sel(struct regulator_dev *dev) |
|
{ |
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
|
struct regmap *regmap = rdev_get_regmap(dev); |
|
int ret, id = rdev_get_id(dev); |
|
unsigned int value, reg; |
|
|
|
reg = pmic->get_ctrl_reg(id); |
|
|
|
ret = regmap_read(regmap, reg, &value); |
|
if (ret < 0) |
|
return ret; |
|
|
|
switch (id) { |
|
case TPS65911_REG_LDO1: |
|
case TPS65911_REG_LDO2: |
|
case TPS65911_REG_LDO4: |
|
value &= LDO1_SEL_MASK; |
|
value >>= LDO_SEL_SHIFT; |
|
break; |
|
case TPS65911_REG_LDO3: |
|
case TPS65911_REG_LDO5: |
|
case TPS65911_REG_LDO6: |
|
case TPS65911_REG_LDO7: |
|
case TPS65911_REG_LDO8: |
|
value &= LDO3_SEL_MASK; |
|
value >>= LDO_SEL_SHIFT; |
|
break; |
|
case TPS65910_REG_VIO: |
|
value &= LDO_SEL_MASK; |
|
value >>= LDO_SEL_SHIFT; |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return value; |
|
} |
|
|
|
static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev, |
|
unsigned selector) |
|
{ |
|
struct regmap *regmap = rdev_get_regmap(dev); |
|
int id = rdev_get_id(dev), vsel; |
|
int dcdc_mult = 0; |
|
|
|
switch (id) { |
|
case TPS65910_REG_VDD1: |
|
dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; |
|
if (dcdc_mult == 1) |
|
dcdc_mult--; |
|
vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; |
|
|
|
regmap_update_bits(regmap, TPS65910_VDD1, VDD1_VGAIN_SEL_MASK, |
|
dcdc_mult << VDD1_VGAIN_SEL_SHIFT); |
|
regmap_write(regmap, TPS65910_VDD1_OP, vsel); |
|
break; |
|
case TPS65910_REG_VDD2: |
|
dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; |
|
if (dcdc_mult == 1) |
|
dcdc_mult--; |
|
vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; |
|
|
|
regmap_update_bits(regmap, TPS65910_VDD2, VDD1_VGAIN_SEL_MASK, |
|
dcdc_mult << VDD2_VGAIN_SEL_SHIFT); |
|
regmap_write(regmap, TPS65910_VDD2_OP, vsel); |
|
break; |
|
case TPS65911_REG_VDDCTRL: |
|
vsel = selector + 3; |
|
regmap_write(regmap, TPS65911_VDDCTRL_OP, vsel); |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int tps65910_set_voltage_sel(struct regulator_dev *dev, |
|
unsigned selector) |
|
{ |
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
|
struct regmap *regmap = rdev_get_regmap(dev); |
|
int reg, id = rdev_get_id(dev); |
|
|
|
reg = pmic->get_ctrl_reg(id); |
|
if (reg < 0) |
|
return reg; |
|
|
|
switch (id) { |
|
case TPS65910_REG_VIO: |
|
case TPS65910_REG_VDIG1: |
|
case TPS65910_REG_VDIG2: |
|
case TPS65910_REG_VPLL: |
|
case TPS65910_REG_VDAC: |
|
case TPS65910_REG_VAUX1: |
|
case TPS65910_REG_VAUX2: |
|
case TPS65910_REG_VAUX33: |
|
case TPS65910_REG_VMMC: |
|
return regmap_update_bits(regmap, reg, LDO_SEL_MASK, |
|
selector << LDO_SEL_SHIFT); |
|
case TPS65910_REG_VBB: |
|
return regmap_update_bits(regmap, reg, BBCH_BBSEL_MASK, |
|
selector << BBCH_BBSEL_SHIFT); |
|
} |
|
|
|
return -EINVAL; |
|
} |
|
|
|
static int tps65911_set_voltage_sel(struct regulator_dev *dev, |
|
unsigned selector) |
|
{ |
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
|
struct regmap *regmap = rdev_get_regmap(dev); |
|
int reg, id = rdev_get_id(dev); |
|
|
|
reg = pmic->get_ctrl_reg(id); |
|
if (reg < 0) |
|
return reg; |
|
|
|
switch (id) { |
|
case TPS65911_REG_LDO1: |
|
case TPS65911_REG_LDO2: |
|
case TPS65911_REG_LDO4: |
|
return regmap_update_bits(regmap, reg, LDO1_SEL_MASK, |
|
selector << LDO_SEL_SHIFT); |
|
case TPS65911_REG_LDO3: |
|
case TPS65911_REG_LDO5: |
|
case TPS65911_REG_LDO6: |
|
case TPS65911_REG_LDO7: |
|
case TPS65911_REG_LDO8: |
|
return regmap_update_bits(regmap, reg, LDO3_SEL_MASK, |
|
selector << LDO_SEL_SHIFT); |
|
case TPS65910_REG_VIO: |
|
return regmap_update_bits(regmap, reg, LDO_SEL_MASK, |
|
selector << LDO_SEL_SHIFT); |
|
case TPS65910_REG_VBB: |
|
return regmap_update_bits(regmap, reg, BBCH_BBSEL_MASK, |
|
selector << BBCH_BBSEL_SHIFT); |
|
} |
|
|
|
return -EINVAL; |
|
} |
|
|
|
|
|
static int tps65910_list_voltage_dcdc(struct regulator_dev *dev, |
|
unsigned selector) |
|
{ |
|
int volt, mult = 1, id = rdev_get_id(dev); |
|
|
|
switch (id) { |
|
case TPS65910_REG_VDD1: |
|
case TPS65910_REG_VDD2: |
|
mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; |
|
volt = VDD1_2_MIN_VOLT + |
|
(selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET; |
|
break; |
|
case TPS65911_REG_VDDCTRL: |
|
volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET); |
|
break; |
|
default: |
|
BUG(); |
|
return -EINVAL; |
|
} |
|
|
|
return volt * 100 * mult; |
|
} |
|
|
|
static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector) |
|
{ |
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
|
int step_mv = 0, id = rdev_get_id(dev); |
|
|
|
switch (id) { |
|
case TPS65911_REG_LDO1: |
|
case TPS65911_REG_LDO2: |
|
case TPS65911_REG_LDO4: |
|
/* The first 5 values of the selector correspond to 1V */ |
|
if (selector < 5) |
|
selector = 0; |
|
else |
|
selector -= 4; |
|
|
|
step_mv = 50; |
|
break; |
|
case TPS65911_REG_LDO3: |
|
case TPS65911_REG_LDO5: |
|
case TPS65911_REG_LDO6: |
|
case TPS65911_REG_LDO7: |
|
case TPS65911_REG_LDO8: |
|
/* The first 3 values of the selector correspond to 1V */ |
|
if (selector < 3) |
|
selector = 0; |
|
else |
|
selector -= 2; |
|
|
|
step_mv = 100; |
|
break; |
|
case TPS65910_REG_VIO: |
|
return pmic->info[id]->voltage_table[selector]; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return (LDO_MIN_VOLT + selector * step_mv) * 1000; |
|
} |
|
|
|
/* Regulator ops (except VRTC) */ |
|
static const struct regulator_ops tps65910_ops_dcdc = { |
|
.is_enabled = regulator_is_enabled_regmap, |
|
.enable = regulator_enable_regmap, |
|
.disable = regulator_disable_regmap, |
|
.set_mode = tps65910_set_mode, |
|
.get_mode = tps65910_get_mode, |
|
.get_voltage_sel = tps65910_get_voltage_dcdc_sel, |
|
.set_voltage_sel = tps65910_set_voltage_dcdc_sel, |
|
.set_voltage_time_sel = regulator_set_voltage_time_sel, |
|
.list_voltage = tps65910_list_voltage_dcdc, |
|
.map_voltage = regulator_map_voltage_ascend, |
|
}; |
|
|
|
static const struct regulator_ops tps65910_ops_vdd3 = { |
|
.is_enabled = regulator_is_enabled_regmap, |
|
.enable = regulator_enable_regmap, |
|
.disable = regulator_disable_regmap, |
|
.set_mode = tps65910_set_mode, |
|
.get_mode = tps65910_get_mode, |
|
.get_voltage = tps65910_get_voltage_vdd3, |
|
.list_voltage = regulator_list_voltage_table, |
|
.map_voltage = regulator_map_voltage_ascend, |
|
}; |
|
|
|
static const struct regulator_ops tps65910_ops_vbb = { |
|
.is_enabled = regulator_is_enabled_regmap, |
|
.enable = regulator_enable_regmap, |
|
.disable = regulator_disable_regmap, |
|
.set_mode = tps65910_set_mode, |
|
.get_mode = tps65910_get_mode, |
|
.get_voltage_sel = tps65910_get_voltage_sel, |
|
.set_voltage_sel = tps65910_set_voltage_sel, |
|
.list_voltage = regulator_list_voltage_table, |
|
.map_voltage = regulator_map_voltage_iterate, |
|
}; |
|
|
|
static const struct regulator_ops tps65910_ops = { |
|
.is_enabled = regulator_is_enabled_regmap, |
|
.enable = regulator_enable_regmap, |
|
.disable = regulator_disable_regmap, |
|
.set_mode = tps65910_set_mode, |
|
.get_mode = tps65910_get_mode, |
|
.get_voltage_sel = tps65910_get_voltage_sel, |
|
.set_voltage_sel = tps65910_set_voltage_sel, |
|
.list_voltage = regulator_list_voltage_table, |
|
.map_voltage = regulator_map_voltage_ascend, |
|
}; |
|
|
|
static const struct regulator_ops tps65911_ops = { |
|
.is_enabled = regulator_is_enabled_regmap, |
|
.enable = regulator_enable_regmap, |
|
.disable = regulator_disable_regmap, |
|
.set_mode = tps65910_set_mode, |
|
.get_mode = tps65910_get_mode, |
|
.get_voltage_sel = tps65911_get_voltage_sel, |
|
.set_voltage_sel = tps65911_set_voltage_sel, |
|
.list_voltage = tps65911_list_voltage, |
|
.map_voltage = regulator_map_voltage_ascend, |
|
}; |
|
|
|
static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic, |
|
int id, int ext_sleep_config) |
|
{ |
|
struct tps65910 *mfd = pmic->mfd; |
|
u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF; |
|
u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF); |
|
int ret; |
|
|
|
/* |
|
* Regulator can not be control from multiple external input EN1, EN2 |
|
* and EN3 together. |
|
*/ |
|
if (ext_sleep_config & EXT_SLEEP_CONTROL) { |
|
int en_count; |
|
en_count = ((ext_sleep_config & |
|
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0); |
|
en_count += ((ext_sleep_config & |
|
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0); |
|
en_count += ((ext_sleep_config & |
|
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0); |
|
en_count += ((ext_sleep_config & |
|
TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0); |
|
if (en_count > 1) { |
|
dev_err(mfd->dev, |
|
"External sleep control flag is not proper\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
pmic->board_ext_control[id] = ext_sleep_config; |
|
|
|
/* External EN1 control */ |
|
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) |
|
ret = regmap_set_bits(mfd->regmap, |
|
TPS65910_EN1_LDO_ASS + regoffs, bit_pos); |
|
else |
|
ret = regmap_clear_bits(mfd->regmap, |
|
TPS65910_EN1_LDO_ASS + regoffs, bit_pos); |
|
if (ret < 0) { |
|
dev_err(mfd->dev, |
|
"Error in configuring external control EN1\n"); |
|
return ret; |
|
} |
|
|
|
/* External EN2 control */ |
|
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) |
|
ret = regmap_set_bits(mfd->regmap, |
|
TPS65910_EN2_LDO_ASS + regoffs, bit_pos); |
|
else |
|
ret = regmap_clear_bits(mfd->regmap, |
|
TPS65910_EN2_LDO_ASS + regoffs, bit_pos); |
|
if (ret < 0) { |
|
dev_err(mfd->dev, |
|
"Error in configuring external control EN2\n"); |
|
return ret; |
|
} |
|
|
|
/* External EN3 control for TPS65910 LDO only */ |
|
if ((tps65910_chip_id(mfd) == TPS65910) && |
|
(id >= TPS65910_REG_VDIG1)) { |
|
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) |
|
ret = regmap_set_bits(mfd->regmap, |
|
TPS65910_EN3_LDO_ASS + regoffs, bit_pos); |
|
else |
|
ret = regmap_clear_bits(mfd->regmap, |
|
TPS65910_EN3_LDO_ASS + regoffs, bit_pos); |
|
if (ret < 0) { |
|
dev_err(mfd->dev, |
|
"Error in configuring external control EN3\n"); |
|
return ret; |
|
} |
|
} |
|
|
|
/* Return if no external control is selected */ |
|
if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) { |
|
/* Clear all sleep controls */ |
|
ret = regmap_clear_bits(mfd->regmap, |
|
TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); |
|
if (!ret) |
|
ret = regmap_clear_bits(mfd->regmap, |
|
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); |
|
if (ret < 0) |
|
dev_err(mfd->dev, |
|
"Error in configuring SLEEP register\n"); |
|
return ret; |
|
} |
|
|
|
/* |
|
* For regulator that has separate operational and sleep register make |
|
* sure that operational is used and clear sleep register to turn |
|
* regulator off when external control is inactive |
|
*/ |
|
if ((id == TPS65910_REG_VDD1) || |
|
(id == TPS65910_REG_VDD2) || |
|
((id == TPS65911_REG_VDDCTRL) && |
|
(tps65910_chip_id(mfd) == TPS65911))) { |
|
int op_reg_add = pmic->get_ctrl_reg(id) + 1; |
|
int sr_reg_add = pmic->get_ctrl_reg(id) + 2; |
|
int opvsel, srvsel; |
|
|
|
ret = regmap_read(mfd->regmap, op_reg_add, &opvsel); |
|
if (ret < 0) |
|
return ret; |
|
ret = regmap_read(mfd->regmap, sr_reg_add, &srvsel); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (opvsel & VDD1_OP_CMD_MASK) { |
|
u8 reg_val = srvsel & VDD1_OP_SEL_MASK; |
|
|
|
ret = regmap_write(mfd->regmap, op_reg_add, reg_val); |
|
if (ret < 0) { |
|
dev_err(mfd->dev, |
|
"Error in configuring op register\n"); |
|
return ret; |
|
} |
|
} |
|
ret = regmap_write(mfd->regmap, sr_reg_add, 0); |
|
if (ret < 0) { |
|
dev_err(mfd->dev, "Error in setting sr register\n"); |
|
return ret; |
|
} |
|
} |
|
|
|
ret = regmap_clear_bits(mfd->regmap, |
|
TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); |
|
if (!ret) { |
|
if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) |
|
ret = regmap_set_bits(mfd->regmap, |
|
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); |
|
else |
|
ret = regmap_clear_bits(mfd->regmap, |
|
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); |
|
} |
|
if (ret < 0) |
|
dev_err(mfd->dev, |
|
"Error in configuring SLEEP register\n"); |
|
|
|
return ret; |
|
} |
|
|
|
#ifdef CONFIG_OF |
|
|
|
static struct of_regulator_match tps65910_matches[] = { |
|
{ .name = "vrtc", .driver_data = (void *) &tps65910_regs[0] }, |
|
{ .name = "vio", .driver_data = (void *) &tps65910_regs[1] }, |
|
{ .name = "vdd1", .driver_data = (void *) &tps65910_regs[2] }, |
|
{ .name = "vdd2", .driver_data = (void *) &tps65910_regs[3] }, |
|
{ .name = "vdd3", .driver_data = (void *) &tps65910_regs[4] }, |
|
{ .name = "vdig1", .driver_data = (void *) &tps65910_regs[5] }, |
|
{ .name = "vdig2", .driver_data = (void *) &tps65910_regs[6] }, |
|
{ .name = "vpll", .driver_data = (void *) &tps65910_regs[7] }, |
|
{ .name = "vdac", .driver_data = (void *) &tps65910_regs[8] }, |
|
{ .name = "vaux1", .driver_data = (void *) &tps65910_regs[9] }, |
|
{ .name = "vaux2", .driver_data = (void *) &tps65910_regs[10] }, |
|
{ .name = "vaux33", .driver_data = (void *) &tps65910_regs[11] }, |
|
{ .name = "vmmc", .driver_data = (void *) &tps65910_regs[12] }, |
|
{ .name = "vbb", .driver_data = (void *) &tps65910_regs[13] }, |
|
}; |
|
|
|
static struct of_regulator_match tps65911_matches[] = { |
|
{ .name = "vrtc", .driver_data = (void *) &tps65911_regs[0] }, |
|
{ .name = "vio", .driver_data = (void *) &tps65911_regs[1] }, |
|
{ .name = "vdd1", .driver_data = (void *) &tps65911_regs[2] }, |
|
{ .name = "vdd2", .driver_data = (void *) &tps65911_regs[3] }, |
|
{ .name = "vddctrl", .driver_data = (void *) &tps65911_regs[4] }, |
|
{ .name = "ldo1", .driver_data = (void *) &tps65911_regs[5] }, |
|
{ .name = "ldo2", .driver_data = (void *) &tps65911_regs[6] }, |
|
{ .name = "ldo3", .driver_data = (void *) &tps65911_regs[7] }, |
|
{ .name = "ldo4", .driver_data = (void *) &tps65911_regs[8] }, |
|
{ .name = "ldo5", .driver_data = (void *) &tps65911_regs[9] }, |
|
{ .name = "ldo6", .driver_data = (void *) &tps65911_regs[10] }, |
|
{ .name = "ldo7", .driver_data = (void *) &tps65911_regs[11] }, |
|
{ .name = "ldo8", .driver_data = (void *) &tps65911_regs[12] }, |
|
}; |
|
|
|
static struct tps65910_board *tps65910_parse_dt_reg_data( |
|
struct platform_device *pdev, |
|
struct of_regulator_match **tps65910_reg_matches) |
|
{ |
|
struct tps65910_board *pmic_plat_data; |
|
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent); |
|
struct device_node *np, *regulators; |
|
struct of_regulator_match *matches; |
|
unsigned int prop; |
|
int idx = 0, ret, count; |
|
|
|
pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data), |
|
GFP_KERNEL); |
|
if (!pmic_plat_data) |
|
return NULL; |
|
|
|
np = pdev->dev.parent->of_node; |
|
regulators = of_get_child_by_name(np, "regulators"); |
|
if (!regulators) { |
|
dev_err(&pdev->dev, "regulator node not found\n"); |
|
return NULL; |
|
} |
|
|
|
switch (tps65910_chip_id(tps65910)) { |
|
case TPS65910: |
|
count = ARRAY_SIZE(tps65910_matches); |
|
matches = tps65910_matches; |
|
break; |
|
case TPS65911: |
|
count = ARRAY_SIZE(tps65911_matches); |
|
matches = tps65911_matches; |
|
break; |
|
default: |
|
of_node_put(regulators); |
|
dev_err(&pdev->dev, "Invalid tps chip version\n"); |
|
return NULL; |
|
} |
|
|
|
ret = of_regulator_match(&pdev->dev, regulators, matches, count); |
|
of_node_put(regulators); |
|
if (ret < 0) { |
|
dev_err(&pdev->dev, "Error parsing regulator init data: %d\n", |
|
ret); |
|
return NULL; |
|
} |
|
|
|
*tps65910_reg_matches = matches; |
|
|
|
for (idx = 0; idx < count; idx++) { |
|
if (!matches[idx].of_node) |
|
continue; |
|
|
|
pmic_plat_data->tps65910_pmic_init_data[idx] = |
|
matches[idx].init_data; |
|
|
|
ret = of_property_read_u32(matches[idx].of_node, |
|
"ti,regulator-ext-sleep-control", &prop); |
|
if (!ret) |
|
pmic_plat_data->regulator_ext_sleep_control[idx] = prop; |
|
|
|
} |
|
|
|
return pmic_plat_data; |
|
} |
|
#else |
|
static inline struct tps65910_board *tps65910_parse_dt_reg_data( |
|
struct platform_device *pdev, |
|
struct of_regulator_match **tps65910_reg_matches) |
|
{ |
|
*tps65910_reg_matches = NULL; |
|
return NULL; |
|
} |
|
#endif |
|
|
|
static int tps65910_probe(struct platform_device *pdev) |
|
{ |
|
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent); |
|
struct regulator_config config = { }; |
|
struct tps_info *info; |
|
struct regulator_dev *rdev; |
|
struct tps65910_reg *pmic; |
|
struct tps65910_board *pmic_plat_data; |
|
struct of_regulator_match *tps65910_reg_matches = NULL; |
|
int i, err; |
|
|
|
pmic_plat_data = dev_get_platdata(tps65910->dev); |
|
if (!pmic_plat_data && tps65910->dev->of_node) |
|
pmic_plat_data = tps65910_parse_dt_reg_data(pdev, |
|
&tps65910_reg_matches); |
|
|
|
if (!pmic_plat_data) { |
|
dev_err(&pdev->dev, "Platform data not found\n"); |
|
return -EINVAL; |
|
} |
|
|
|
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); |
|
if (!pmic) |
|
return -ENOMEM; |
|
|
|
pmic->mfd = tps65910; |
|
platform_set_drvdata(pdev, pmic); |
|
|
|
/* Give control of all register to control port */ |
|
err = regmap_set_bits(pmic->mfd->regmap, TPS65910_DEVCTRL, |
|
DEVCTRL_SR_CTL_I2C_SEL_MASK); |
|
if (err < 0) |
|
return err; |
|
|
|
switch (tps65910_chip_id(tps65910)) { |
|
case TPS65910: |
|
BUILD_BUG_ON(TPS65910_NUM_REGS < ARRAY_SIZE(tps65910_regs)); |
|
pmic->get_ctrl_reg = &tps65910_get_ctrl_register; |
|
pmic->num_regulators = ARRAY_SIZE(tps65910_regs); |
|
pmic->ext_sleep_control = tps65910_ext_sleep_control; |
|
info = tps65910_regs; |
|
/* Work around silicon erratum SWCZ010: output programmed |
|
* voltage level can go higher than expected or crash |
|
* Workaround: use no synchronization of DCDC clocks |
|
*/ |
|
regmap_clear_bits(pmic->mfd->regmap, TPS65910_DCDCCTRL, |
|
DCDCCTRL_DCDCCKSYNC_MASK); |
|
break; |
|
case TPS65911: |
|
BUILD_BUG_ON(TPS65910_NUM_REGS < ARRAY_SIZE(tps65911_regs)); |
|
pmic->get_ctrl_reg = &tps65911_get_ctrl_register; |
|
pmic->num_regulators = ARRAY_SIZE(tps65911_regs); |
|
pmic->ext_sleep_control = tps65911_ext_sleep_control; |
|
info = tps65911_regs; |
|
break; |
|
default: |
|
dev_err(&pdev->dev, "Invalid tps chip version\n"); |
|
return -ENODEV; |
|
} |
|
|
|
pmic->desc = devm_kcalloc(&pdev->dev, |
|
pmic->num_regulators, |
|
sizeof(struct regulator_desc), |
|
GFP_KERNEL); |
|
if (!pmic->desc) |
|
return -ENOMEM; |
|
|
|
pmic->info = devm_kcalloc(&pdev->dev, |
|
pmic->num_regulators, |
|
sizeof(struct tps_info *), |
|
GFP_KERNEL); |
|
if (!pmic->info) |
|
return -ENOMEM; |
|
|
|
pmic->rdev = devm_kcalloc(&pdev->dev, |
|
pmic->num_regulators, |
|
sizeof(struct regulator_dev *), |
|
GFP_KERNEL); |
|
if (!pmic->rdev) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < pmic->num_regulators; i++, info++) { |
|
/* Register the regulators */ |
|
pmic->info[i] = info; |
|
|
|
pmic->desc[i].name = info->name; |
|
pmic->desc[i].supply_name = info->vin_name; |
|
pmic->desc[i].id = i; |
|
pmic->desc[i].n_voltages = info->n_voltages; |
|
pmic->desc[i].enable_time = info->enable_time_us; |
|
|
|
if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) { |
|
pmic->desc[i].ops = &tps65910_ops_dcdc; |
|
pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE * |
|
VDD1_2_NUM_VOLT_COARSE; |
|
pmic->desc[i].ramp_delay = 12500; |
|
} else if (i == TPS65910_REG_VDD3) { |
|
if (tps65910_chip_id(tps65910) == TPS65910) { |
|
pmic->desc[i].ops = &tps65910_ops_vdd3; |
|
pmic->desc[i].volt_table = info->voltage_table; |
|
} else { |
|
pmic->desc[i].ops = &tps65910_ops_dcdc; |
|
pmic->desc[i].ramp_delay = 5000; |
|
} |
|
} else if (i == TPS65910_REG_VBB && |
|
tps65910_chip_id(tps65910) == TPS65910) { |
|
pmic->desc[i].ops = &tps65910_ops_vbb; |
|
pmic->desc[i].volt_table = info->voltage_table; |
|
} else { |
|
if (tps65910_chip_id(tps65910) == TPS65910) { |
|
pmic->desc[i].ops = &tps65910_ops; |
|
pmic->desc[i].volt_table = info->voltage_table; |
|
} else { |
|
pmic->desc[i].ops = &tps65911_ops; |
|
} |
|
} |
|
|
|
err = tps65910_set_ext_sleep_config(pmic, i, |
|
pmic_plat_data->regulator_ext_sleep_control[i]); |
|
/* |
|
* Failing on regulator for configuring externally control |
|
* is not a serious issue, just throw warning. |
|
*/ |
|
if (err < 0) |
|
dev_warn(tps65910->dev, |
|
"Failed to initialise ext control config\n"); |
|
|
|
pmic->desc[i].type = REGULATOR_VOLTAGE; |
|
pmic->desc[i].owner = THIS_MODULE; |
|
pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i); |
|
pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED; |
|
|
|
config.dev = tps65910->dev; |
|
config.init_data = pmic_plat_data->tps65910_pmic_init_data[i]; |
|
config.driver_data = pmic; |
|
config.regmap = tps65910->regmap; |
|
|
|
if (tps65910_reg_matches) |
|
config.of_node = tps65910_reg_matches[i].of_node; |
|
|
|
rdev = devm_regulator_register(&pdev->dev, &pmic->desc[i], |
|
&config); |
|
if (IS_ERR(rdev)) { |
|
dev_err(tps65910->dev, |
|
"failed to register %s regulator\n", |
|
pdev->name); |
|
return PTR_ERR(rdev); |
|
} |
|
|
|
/* Save regulator for cleanup */ |
|
pmic->rdev[i] = rdev; |
|
} |
|
return 0; |
|
} |
|
|
|
static void tps65910_shutdown(struct platform_device *pdev) |
|
{ |
|
struct tps65910_reg *pmic = platform_get_drvdata(pdev); |
|
int i; |
|
|
|
/* |
|
* Before bootloader jumps to kernel, it makes sure that required |
|
* external control signals are in desired state so that given rails |
|
* can be configure accordingly. |
|
* If rails are configured to be controlled from external control |
|
* then before shutting down/rebooting the system, the external |
|
* control configuration need to be remove from the rails so that |
|
* its output will be available as per register programming even |
|
* if external controls are removed. This is require when the POR |
|
* value of the control signals are not in active state and before |
|
* bootloader initializes it, the system requires the rail output |
|
* to be active for booting. |
|
*/ |
|
for (i = 0; i < pmic->num_regulators; i++) { |
|
int err; |
|
if (!pmic->rdev[i]) |
|
continue; |
|
|
|
err = tps65910_set_ext_sleep_config(pmic, i, 0); |
|
if (err < 0) |
|
dev_err(&pdev->dev, |
|
"Error in clearing external control\n"); |
|
} |
|
} |
|
|
|
static struct platform_driver tps65910_driver = { |
|
.driver = { |
|
.name = "tps65910-pmic", |
|
}, |
|
.probe = tps65910_probe, |
|
.shutdown = tps65910_shutdown, |
|
}; |
|
|
|
static int __init tps65910_init(void) |
|
{ |
|
return platform_driver_register(&tps65910_driver); |
|
} |
|
subsys_initcall(tps65910_init); |
|
|
|
static void __exit tps65910_cleanup(void) |
|
{ |
|
platform_driver_unregister(&tps65910_driver); |
|
} |
|
module_exit(tps65910_cleanup); |
|
|
|
MODULE_AUTHOR("Graeme Gregory <[email protected]>"); |
|
MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_ALIAS("platform:tps65910-pmic");
|
|
|