^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * MFD core driver for Ricoh RN5T618 PMIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2016 Toradex AG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mfd/rn5t618.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/reboot.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static const struct mfd_cell rn5t618_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) { .name = "rn5t618-regulator" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) { .name = "rn5t618-wdt" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static const struct mfd_cell rc5t619_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) { .name = "rn5t618-adc" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) { .name = "rn5t618-power" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) { .name = "rn5t618-regulator" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) { .name = "rc5t619-rtc" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) { .name = "rn5t618-wdt" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) switch (reg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) case RN5T618_WATCHDOGCNT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) case RN5T618_DCIRQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) case RN5T618_ILIMDATAH ... RN5T618_AIN0DATAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) case RN5T618_ADCCNT3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) case RN5T618_IR_ADC1 ... RN5T618_IR_ADC3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) case RN5T618_IR_GPR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) case RN5T618_IR_GPF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) case RN5T618_MON_IOIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) case RN5T618_INTMON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) case RN5T618_RTC_CTRL1 ... RN5T618_RTC_CTRL2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) case RN5T618_RTC_SECONDS ... RN5T618_RTC_YEAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) case RN5T618_CHGSTATE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) case RN5T618_CHGCTRL_IRR ... RN5T618_CHGERR_MONI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) case RN5T618_CONTROL ... RN5T618_CC_AVEREG0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static const struct regmap_config rn5t618_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .volatile_reg = rn5t618_volatile_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .max_register = RN5T618_MAX_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .cache_type = REGCACHE_RBTREE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static const struct regmap_irq rc5t619_irqs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) REGMAP_IRQ_REG(RN5T618_IRQ_SYS, 0, BIT(0)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) REGMAP_IRQ_REG(RN5T618_IRQ_DCDC, 0, BIT(1)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) REGMAP_IRQ_REG(RN5T618_IRQ_RTC, 0, BIT(2)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) REGMAP_IRQ_REG(RN5T618_IRQ_ADC, 0, BIT(3)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) REGMAP_IRQ_REG(RN5T618_IRQ_GPIO, 0, BIT(4)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) REGMAP_IRQ_REG(RN5T618_IRQ_CHG, 0, BIT(6)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static const struct regmap_irq_chip rc5t619_irq_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .name = "rc5t619",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .irqs = rc5t619_irqs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .num_irqs = ARRAY_SIZE(rc5t619_irqs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .num_regs = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .status_base = RN5T618_INTMON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .mask_base = RN5T618_INTEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .mask_invert = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static struct i2c_client *rn5t618_pm_power_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static struct notifier_block rn5t618_restart_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static int rn5t618_irq_init(struct rn5t618 *rn5t618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) const struct regmap_irq_chip *irq_chip = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (!rn5t618->irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) switch (rn5t618->variant) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) case RC5T619:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) irq_chip = &rc5t619_irq_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) dev_err(rn5t618->dev, "Currently no IRQ support for variant %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) (int)rn5t618->variant);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ret = devm_regmap_add_irq_chip(rn5t618->dev, rn5t618->regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) rn5t618->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) IRQF_TRIGGER_LOW | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 0, irq_chip, &rn5t618->irq_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) dev_err(rn5t618->dev, "Failed to register IRQ chip\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static void rn5t618_trigger_poweroff_sequence(bool repower)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* disable automatic repower-on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) ret = i2c_smbus_read_byte_data(rn5t618_pm_power_off, RN5T618_REPCNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) ret &= ~RN5T618_REPCNT_REPWRON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (repower)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) ret |= RN5T618_REPCNT_REPWRON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ret = i2c_smbus_write_byte_data(rn5t618_pm_power_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) RN5T618_REPCNT, (u8)ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* start power-off sequence */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ret = i2c_smbus_read_byte_data(rn5t618_pm_power_off, RN5T618_SLPCNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) ret |= RN5T618_SLPCNT_SWPWROFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) ret = i2c_smbus_write_byte_data(rn5t618_pm_power_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) RN5T618_SLPCNT, (u8)ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) dev_alert(&rn5t618_pm_power_off->dev, "Failed to shutdown (err = %d)\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static void rn5t618_power_off(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) rn5t618_trigger_poweroff_sequence(false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int rn5t618_restart(struct notifier_block *this,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) unsigned long mode, void *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) rn5t618_trigger_poweroff_sequence(true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * Re-power factor detection on PMIC side is not instant. 1ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * proved to be enough time until reset takes effect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) mdelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static const struct of_device_id rn5t618_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) { .compatible = "ricoh,rn5t567", .data = (void *)RN5T567 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) { .compatible = "ricoh,rn5t618", .data = (void *)RN5T618 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) { .compatible = "ricoh,rc5t619", .data = (void *)RC5T619 },
^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) MODULE_DEVICE_TABLE(of, rn5t618_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int rn5t618_i2c_probe(struct i2c_client *i2c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) const struct of_device_id *of_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct rn5t618 *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) of_id = of_match_device(rn5t618_of_match, &i2c->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (!of_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) dev_err(&i2c->dev, "Failed to find matching DT ID\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) i2c_set_clientdata(i2c, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) priv->variant = (long)of_id->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) priv->irq = i2c->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) priv->dev = &i2c->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) priv->regmap = devm_regmap_init_i2c(i2c, &rn5t618_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (IS_ERR(priv->regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) ret = PTR_ERR(priv->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (priv->variant == RC5T619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) rc5t619_cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) ARRAY_SIZE(rc5t619_cells),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) rn5t618_cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) ARRAY_SIZE(rn5t618_cells),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) rn5t618_pm_power_off = i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (of_device_is_system_power_controller(i2c->dev.of_node)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (!pm_power_off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) pm_power_off = rn5t618_power_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) dev_warn(&i2c->dev, "Poweroff callback already assigned\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) rn5t618_restart_handler.notifier_call = rn5t618_restart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) rn5t618_restart_handler.priority = 192;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) ret = register_restart_handler(&rn5t618_restart_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) dev_err(&i2c->dev, "cannot register restart handler, %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return rn5t618_irq_init(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static int rn5t618_i2c_remove(struct i2c_client *i2c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (i2c == rn5t618_pm_power_off) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) rn5t618_pm_power_off = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) pm_power_off = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) unregister_restart_handler(&rn5t618_restart_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static int __maybe_unused rn5t618_i2c_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct rn5t618 *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) if (priv->irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) disable_irq(priv->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) static int __maybe_unused rn5t618_i2c_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct rn5t618 *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (priv->irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) enable_irq(priv->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static SIMPLE_DEV_PM_OPS(rn5t618_i2c_dev_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) rn5t618_i2c_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) rn5t618_i2c_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static struct i2c_driver rn5t618_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) .name = "rn5t618",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) .of_match_table = of_match_ptr(rn5t618_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) .pm = &rn5t618_i2c_dev_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .probe_new = rn5t618_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) .remove = rn5t618_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) module_i2c_driver(rn5t618_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) MODULE_DESCRIPTION("Ricoh RN5T567/618 MFD driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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