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99dcda8d1f
Remove dev_err() messages after platform_get_irq*() failures. platform_get_irq() already prints an error. Generated by: scripts/coccinelle/api/platform_get_irq.cocci Signed-off-by: Yihao Han <hanyihao@vivo.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
425 lines
11 KiB
C
425 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* AXP20X and AXP22X PMICs' ACIN power supply driver
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*
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* Copyright (C) 2016 Free Electrons
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* Quentin Schulz <quentin.schulz@free-electrons.com>
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*/
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <linux/power_supply.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/iio/consumer.h>
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#define AXP20X_PWR_STATUS_ACIN_PRESENT BIT(7)
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#define AXP20X_PWR_STATUS_ACIN_AVAIL BIT(6)
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#define AXP813_ACIN_PATH_SEL BIT(7)
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#define AXP813_ACIN_PATH_SEL_TO_BIT(x) (!!(x) << 7)
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#define AXP813_VHOLD_MASK GENMASK(5, 3)
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#define AXP813_VHOLD_UV_TO_BIT(x) ((((x) / 100000) - 40) << 3)
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#define AXP813_VHOLD_REG_TO_UV(x) \
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(((((x) & AXP813_VHOLD_MASK) >> 3) + 40) * 100000)
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#define AXP813_CURR_LIMIT_MASK GENMASK(2, 0)
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#define AXP813_CURR_LIMIT_UA_TO_BIT(x) (((x) / 500000) - 3)
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#define AXP813_CURR_LIMIT_REG_TO_UA(x) \
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((((x) & AXP813_CURR_LIMIT_MASK) + 3) * 500000)
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#define DRVNAME "axp20x-ac-power-supply"
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struct axp20x_ac_power {
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struct regmap *regmap;
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struct power_supply *supply;
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struct iio_channel *acin_v;
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struct iio_channel *acin_i;
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bool has_acin_path_sel;
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unsigned int num_irqs;
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unsigned int irqs[];
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};
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static irqreturn_t axp20x_ac_power_irq(int irq, void *devid)
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{
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struct axp20x_ac_power *power = devid;
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power_supply_changed(power->supply);
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return IRQ_HANDLED;
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}
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static int axp20x_ac_power_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct axp20x_ac_power *power = power_supply_get_drvdata(psy);
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int ret, reg;
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switch (psp) {
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case POWER_SUPPLY_PROP_HEALTH:
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ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, ®);
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if (ret)
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return ret;
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if (reg & AXP20X_PWR_STATUS_ACIN_PRESENT) {
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val->intval = POWER_SUPPLY_HEALTH_GOOD;
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return 0;
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}
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val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
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return 0;
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case POWER_SUPPLY_PROP_PRESENT:
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ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, ®);
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if (ret)
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return ret;
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val->intval = !!(reg & AXP20X_PWR_STATUS_ACIN_PRESENT);
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return 0;
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case POWER_SUPPLY_PROP_ONLINE:
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ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, ®);
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if (ret)
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return ret;
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val->intval = !!(reg & AXP20X_PWR_STATUS_ACIN_AVAIL);
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/* ACIN_PATH_SEL disables ACIN even if ACIN_AVAIL is set. */
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if (val->intval && power->has_acin_path_sel) {
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ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL,
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®);
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if (ret)
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return ret;
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val->intval = !!(reg & AXP813_ACIN_PATH_SEL);
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}
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return 0;
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case POWER_SUPPLY_PROP_VOLTAGE_NOW:
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ret = iio_read_channel_processed(power->acin_v, &val->intval);
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if (ret)
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return ret;
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/* IIO framework gives mV but Power Supply framework gives uV */
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val->intval *= 1000;
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return 0;
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case POWER_SUPPLY_PROP_CURRENT_NOW:
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ret = iio_read_channel_processed(power->acin_i, &val->intval);
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if (ret)
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return ret;
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/* IIO framework gives mA but Power Supply framework gives uA */
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val->intval *= 1000;
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return 0;
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case POWER_SUPPLY_PROP_VOLTAGE_MIN:
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ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, ®);
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if (ret)
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return ret;
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val->intval = AXP813_VHOLD_REG_TO_UV(reg);
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return 0;
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case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
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ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, ®);
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if (ret)
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return ret;
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val->intval = AXP813_CURR_LIMIT_REG_TO_UA(reg);
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/* AXP813 datasheet defines values 11x as 4000mA */
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if (val->intval > 4000000)
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val->intval = 4000000;
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return 0;
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default:
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return -EINVAL;
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}
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return -EINVAL;
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}
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static int axp813_ac_power_set_property(struct power_supply *psy,
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enum power_supply_property psp,
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const union power_supply_propval *val)
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{
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struct axp20x_ac_power *power = power_supply_get_drvdata(psy);
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL,
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AXP813_ACIN_PATH_SEL,
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AXP813_ACIN_PATH_SEL_TO_BIT(val->intval));
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case POWER_SUPPLY_PROP_VOLTAGE_MIN:
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if (val->intval < 4000000 || val->intval > 4700000)
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return -EINVAL;
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return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL,
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AXP813_VHOLD_MASK,
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AXP813_VHOLD_UV_TO_BIT(val->intval));
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case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
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if (val->intval < 1500000 || val->intval > 4000000)
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return -EINVAL;
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return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL,
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AXP813_CURR_LIMIT_MASK,
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AXP813_CURR_LIMIT_UA_TO_BIT(val->intval));
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default:
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return -EINVAL;
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}
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return -EINVAL;
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}
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static int axp813_ac_power_prop_writeable(struct power_supply *psy,
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enum power_supply_property psp)
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{
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return psp == POWER_SUPPLY_PROP_ONLINE ||
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psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
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psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT;
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}
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static enum power_supply_property axp20x_ac_power_properties[] = {
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POWER_SUPPLY_PROP_HEALTH,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_ONLINE,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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};
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static enum power_supply_property axp22x_ac_power_properties[] = {
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POWER_SUPPLY_PROP_HEALTH,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_ONLINE,
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};
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static enum power_supply_property axp813_ac_power_properties[] = {
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POWER_SUPPLY_PROP_HEALTH,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_ONLINE,
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POWER_SUPPLY_PROP_VOLTAGE_MIN,
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POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
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};
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static const struct power_supply_desc axp20x_ac_power_desc = {
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.name = "axp20x-ac",
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.type = POWER_SUPPLY_TYPE_MAINS,
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.properties = axp20x_ac_power_properties,
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.num_properties = ARRAY_SIZE(axp20x_ac_power_properties),
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.get_property = axp20x_ac_power_get_property,
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};
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static const struct power_supply_desc axp22x_ac_power_desc = {
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.name = "axp22x-ac",
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.type = POWER_SUPPLY_TYPE_MAINS,
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.properties = axp22x_ac_power_properties,
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.num_properties = ARRAY_SIZE(axp22x_ac_power_properties),
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.get_property = axp20x_ac_power_get_property,
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};
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static const struct power_supply_desc axp813_ac_power_desc = {
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.name = "axp813-ac",
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.type = POWER_SUPPLY_TYPE_MAINS,
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.properties = axp813_ac_power_properties,
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.num_properties = ARRAY_SIZE(axp813_ac_power_properties),
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.property_is_writeable = axp813_ac_power_prop_writeable,
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.get_property = axp20x_ac_power_get_property,
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.set_property = axp813_ac_power_set_property,
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};
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static const char * const axp20x_irq_names[] = {
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"ACIN_PLUGIN",
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"ACIN_REMOVAL",
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};
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struct axp_data {
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const struct power_supply_desc *power_desc;
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const char * const *irq_names;
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unsigned int num_irq_names;
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bool acin_adc;
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bool acin_path_sel;
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};
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static const struct axp_data axp20x_data = {
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.power_desc = &axp20x_ac_power_desc,
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.irq_names = axp20x_irq_names,
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.num_irq_names = ARRAY_SIZE(axp20x_irq_names),
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.acin_adc = true,
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.acin_path_sel = false,
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};
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static const struct axp_data axp22x_data = {
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.power_desc = &axp22x_ac_power_desc,
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.irq_names = axp20x_irq_names,
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.num_irq_names = ARRAY_SIZE(axp20x_irq_names),
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.acin_adc = false,
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.acin_path_sel = false,
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};
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static const struct axp_data axp813_data = {
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.power_desc = &axp813_ac_power_desc,
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.irq_names = axp20x_irq_names,
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.num_irq_names = ARRAY_SIZE(axp20x_irq_names),
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.acin_adc = false,
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.acin_path_sel = true,
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};
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#ifdef CONFIG_PM_SLEEP
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static int axp20x_ac_power_suspend(struct device *dev)
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{
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struct axp20x_ac_power *power = dev_get_drvdata(dev);
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int i = 0;
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/*
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* Allow wake via ACIN_PLUGIN only.
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*
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* As nested threaded IRQs are not automatically disabled during
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* suspend, we must explicitly disable the remainder of the IRQs.
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*/
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if (device_may_wakeup(&power->supply->dev))
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enable_irq_wake(power->irqs[i++]);
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while (i < power->num_irqs)
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disable_irq(power->irqs[i++]);
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return 0;
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}
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static int axp20x_ac_power_resume(struct device *dev)
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{
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struct axp20x_ac_power *power = dev_get_drvdata(dev);
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int i = 0;
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if (device_may_wakeup(&power->supply->dev))
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disable_irq_wake(power->irqs[i++]);
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while (i < power->num_irqs)
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enable_irq(power->irqs[i++]);
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return 0;
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}
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#endif
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static SIMPLE_DEV_PM_OPS(axp20x_ac_power_pm_ops, axp20x_ac_power_suspend,
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axp20x_ac_power_resume);
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static int axp20x_ac_power_probe(struct platform_device *pdev)
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{
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struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
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struct power_supply_config psy_cfg = {};
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struct axp20x_ac_power *power;
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const struct axp_data *axp_data;
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int i, irq, ret;
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if (!of_device_is_available(pdev->dev.of_node))
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return -ENODEV;
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if (!axp20x) {
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dev_err(&pdev->dev, "Parent drvdata not set\n");
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return -EINVAL;
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}
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axp_data = of_device_get_match_data(&pdev->dev);
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power = devm_kzalloc(&pdev->dev,
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struct_size(power, irqs, axp_data->num_irq_names),
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GFP_KERNEL);
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if (!power)
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return -ENOMEM;
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if (axp_data->acin_adc) {
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power->acin_v = devm_iio_channel_get(&pdev->dev, "acin_v");
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if (IS_ERR(power->acin_v)) {
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if (PTR_ERR(power->acin_v) == -ENODEV)
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return -EPROBE_DEFER;
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return PTR_ERR(power->acin_v);
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}
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power->acin_i = devm_iio_channel_get(&pdev->dev, "acin_i");
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if (IS_ERR(power->acin_i)) {
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if (PTR_ERR(power->acin_i) == -ENODEV)
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return -EPROBE_DEFER;
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return PTR_ERR(power->acin_i);
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}
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}
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power->regmap = dev_get_regmap(pdev->dev.parent, NULL);
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power->has_acin_path_sel = axp_data->acin_path_sel;
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power->num_irqs = axp_data->num_irq_names;
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platform_set_drvdata(pdev, power);
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psy_cfg.of_node = pdev->dev.of_node;
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psy_cfg.drv_data = power;
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power->supply = devm_power_supply_register(&pdev->dev,
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axp_data->power_desc,
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&psy_cfg);
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if (IS_ERR(power->supply))
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return PTR_ERR(power->supply);
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/* Request irqs after registering, as irqs may trigger immediately */
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for (i = 0; i < axp_data->num_irq_names; i++) {
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irq = platform_get_irq_byname(pdev, axp_data->irq_names[i]);
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if (irq < 0)
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return irq;
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power->irqs[i] = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
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ret = devm_request_any_context_irq(&pdev->dev, power->irqs[i],
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axp20x_ac_power_irq, 0,
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DRVNAME, power);
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if (ret < 0) {
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dev_err(&pdev->dev, "Error requesting %s IRQ: %d\n",
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axp_data->irq_names[i], ret);
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return ret;
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}
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}
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return 0;
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}
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static const struct of_device_id axp20x_ac_power_match[] = {
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{
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.compatible = "x-powers,axp202-ac-power-supply",
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.data = &axp20x_data,
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}, {
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.compatible = "x-powers,axp221-ac-power-supply",
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.data = &axp22x_data,
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}, {
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.compatible = "x-powers,axp813-ac-power-supply",
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.data = &axp813_data,
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}, { /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, axp20x_ac_power_match);
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static struct platform_driver axp20x_ac_power_driver = {
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.probe = axp20x_ac_power_probe,
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.driver = {
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.name = DRVNAME,
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.of_match_table = axp20x_ac_power_match,
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.pm = &axp20x_ac_power_pm_ops,
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},
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};
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module_platform_driver(axp20x_ac_power_driver);
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MODULE_AUTHOR("Quentin Schulz <quentin.schulz@free-electrons.com>");
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MODULE_DESCRIPTION("AXP20X and AXP22X PMICs' AC power supply driver");
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MODULE_LICENSE("GPL");
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