^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // Battery charger driver for TI's tps65217
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) // Copyright (C) 2015 Collabora Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Author: Enric Balletbo i Serra <enric.balletbo@collabora.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Battery charger driver for TI's tps65217
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/power_supply.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/mfd/tps65217.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define CHARGER_STATUS_PRESENT (TPS65217_STATUS_ACPWR | TPS65217_STATUS_USBPWR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define NUM_CHARGER_IRQS 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define POLL_INTERVAL (HZ * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct tps65217_charger {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct tps65217 *tps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct power_supply *psy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int online;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int prev_online;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct task_struct *poll_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static enum power_supply_property tps65217_charger_props[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) POWER_SUPPLY_PROP_ONLINE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int tps65217_config_charger(struct tps65217_charger *charger)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * tps65217 rev. G, p. 31 (see p. 32 for NTC schematic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * The device can be configured to support a 100k NTC (B = 3960) by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * setting the the NTC_TYPE bit in register CHGCONFIG1 to 1. However it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * is not recommended to do so. In sleep mode, the charger continues
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * charging the battery, but all register values are reset to default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * values. Therefore, the charger would get the wrong temperature
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * information. If 100k NTC setting is required, please contact the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * factory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * ATTENTION, conflicting information, from p. 46
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * NTC TYPE (for battery temperature measurement)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * 0 – 100k (curve 1, B = 3960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * 1 – 10k (curve 2, B = 3480) (default on reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ret = tps65217_clear_bits(charger->tps, TPS65217_REG_CHGCONFIG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) TPS65217_CHGCONFIG1_NTC_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) TPS65217_PROTECT_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) dev_err(charger->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) "failed to set 100k NTC setting: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int tps65217_enable_charging(struct tps65217_charger *charger)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* charger already enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (charger->online)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) dev_dbg(charger->dev, "%s: enable charging\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ret = tps65217_set_bits(charger->tps, TPS65217_REG_CHGCONFIG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) TPS65217_CHGCONFIG1_CHG_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) TPS65217_CHGCONFIG1_CHG_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) TPS65217_PROTECT_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) dev_err(charger->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) "%s: Error in writing CHG_EN in reg 0x%x: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) __func__, TPS65217_REG_CHGCONFIG1, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) charger->online = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int tps65217_charger_get_property(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct tps65217_charger *charger = power_supply_get_drvdata(psy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (psp == POWER_SUPPLY_PROP_ONLINE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) val->intval = charger->online;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static irqreturn_t tps65217_charger_irq(int irq, void *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int ret, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct tps65217_charger *charger = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) charger->prev_online = charger->online;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) ret = tps65217_reg_read(charger->tps, TPS65217_REG_STATUS, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) dev_err(charger->dev, "%s: Error in reading reg 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) __func__, TPS65217_REG_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) dev_dbg(charger->dev, "%s: 0x%x\n", __func__, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* check for charger status bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (val & CHARGER_STATUS_PRESENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) ret = tps65217_enable_charging(charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) dev_err(charger->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) "failed to enable charger: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) charger->online = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (charger->prev_online != charger->online)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) power_supply_changed(charger->psy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) ret = tps65217_reg_read(charger->tps, TPS65217_REG_CHGCONFIG0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) dev_err(charger->dev, "%s: Error in reading reg 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) __func__, TPS65217_REG_CHGCONFIG0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (val & TPS65217_CHGCONFIG0_ACTIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) dev_dbg(charger->dev, "%s: charger is charging\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) dev_dbg(charger->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) "%s: charger is NOT charging\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int tps65217_charger_poll_task(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) set_freezable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) while (!kthread_should_stop()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) schedule_timeout_interruptible(POLL_INTERVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) try_to_freeze();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) tps65217_charger_irq(-1, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static const struct power_supply_desc tps65217_charger_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .name = "tps65217-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .type = POWER_SUPPLY_TYPE_MAINS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .get_property = tps65217_charger_get_property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .properties = tps65217_charger_props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .num_properties = ARRAY_SIZE(tps65217_charger_props),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int tps65217_charger_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct tps65217_charger *charger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct power_supply_config cfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct task_struct *poll_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) int irq[NUM_CHARGER_IRQS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) if (!charger)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) platform_set_drvdata(pdev, charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) charger->tps = tps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) charger->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) cfg.of_node = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) cfg.drv_data = charger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) charger->psy = devm_power_supply_register(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) &tps65217_charger_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) &cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (IS_ERR(charger->psy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) dev_err(&pdev->dev, "failed: power supply register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return PTR_ERR(charger->psy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) irq[0] = platform_get_irq_byname(pdev, "USB");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) irq[1] = platform_get_irq_byname(pdev, "AC");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) ret = tps65217_config_charger(charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) dev_err(charger->dev, "charger config failed, err %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /* Create a polling thread if an interrupt is invalid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (irq[0] < 0 || irq[1] < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) poll_task = kthread_run(tps65217_charger_poll_task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) charger, "ktps65217charger");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (IS_ERR(poll_task)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) ret = PTR_ERR(poll_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) dev_err(charger->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) "Unable to run kthread err %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) charger->poll_task = poll_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) /* Create IRQ threads for charger interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) for (i = 0; i < NUM_CHARGER_IRQS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) ret = devm_request_threaded_irq(&pdev->dev, irq[i], NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) tps65217_charger_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) IRQF_ONESHOT, "tps65217-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) dev_err(charger->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) "Unable to register irq %d err %d\n", irq[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /* Check current state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) tps65217_charger_irq(-1, charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static int tps65217_charger_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct tps65217_charger *charger = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (charger->poll_task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) kthread_stop(charger->poll_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static const struct of_device_id tps65217_charger_match_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) { .compatible = "ti,tps65217-charger", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) MODULE_DEVICE_TABLE(of, tps65217_charger_match_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static struct platform_driver tps65217_charger_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) .probe = tps65217_charger_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) .remove = tps65217_charger_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) .name = "tps65217-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) .of_match_table = of_match_ptr(tps65217_charger_match_table),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) module_platform_driver(tps65217_charger_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) MODULE_AUTHOR("Enric Balletbo Serra <enric.balletbo@collabora.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) MODULE_DESCRIPTION("TPS65217 battery charger driver");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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