diff options
Diffstat (limited to 'drivers/mfd/rn5t618.c')
| -rw-r--r-- | drivers/mfd/rn5t618.c | 109 |
1 files changed, 98 insertions, 11 deletions
diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c index ead2e79036a9..232de50562f9 100644 --- a/drivers/mfd/rn5t618.c +++ b/drivers/mfd/rn5t618.c @@ -8,10 +8,13 @@ #include <linux/delay.h> #include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/mfd/core.h> #include <linux/mfd/rn5t618.h> #include <linux/module.h> #include <linux/of_device.h> +#include <linux/platform_device.h> #include <linux/reboot.h> #include <linux/regmap.h> @@ -20,6 +23,13 @@ static const struct mfd_cell rn5t618_cells[] = { { .name = "rn5t618-wdt" }, }; +static const struct mfd_cell rc5t619_cells[] = { + { .name = "rn5t618-adc" }, + { .name = "rn5t618-regulator" }, + { .name = "rc5t619-rtc" }, + { .name = "rn5t618-wdt" }, +}; + static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -32,6 +42,8 @@ static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg) case RN5T618_IR_GPF: case RN5T618_MON_IOIN: case RN5T618_INTMON: + case RN5T618_RTC_CTRL1 ... RN5T618_RTC_CTRL2: + case RN5T618_RTC_SECONDS ... RN5T618_RTC_YEAR: return true; default: return false; @@ -46,9 +58,56 @@ static const struct regmap_config rn5t618_regmap_config = { .cache_type = REGCACHE_RBTREE, }; +static const struct regmap_irq rc5t619_irqs[] = { + REGMAP_IRQ_REG(RN5T618_IRQ_SYS, 0, BIT(0)), + REGMAP_IRQ_REG(RN5T618_IRQ_DCDC, 0, BIT(1)), + REGMAP_IRQ_REG(RN5T618_IRQ_RTC, 0, BIT(2)), + REGMAP_IRQ_REG(RN5T618_IRQ_ADC, 0, BIT(3)), + REGMAP_IRQ_REG(RN5T618_IRQ_GPIO, 0, BIT(4)), + REGMAP_IRQ_REG(RN5T618_IRQ_CHG, 0, BIT(6)), +}; + +static const struct regmap_irq_chip rc5t619_irq_chip = { + .name = "rc5t619", + .irqs = rc5t619_irqs, + .num_irqs = ARRAY_SIZE(rc5t619_irqs), + .num_regs = 1, + .status_base = RN5T618_INTMON, + .mask_base = RN5T618_INTEN, + .mask_invert = true, +}; + static struct rn5t618 *rn5t618_pm_power_off; static struct notifier_block rn5t618_restart_handler; +static int rn5t618_irq_init(struct rn5t618 *rn5t618) +{ + const struct regmap_irq_chip *irq_chip = NULL; + int ret; + + if (!rn5t618->irq) + return 0; + + switch (rn5t618->variant) { + case RC5T619: + irq_chip = &rc5t619_irq_chip; + break; + default: + dev_err(rn5t618->dev, "Currently no IRQ support for variant %d\n", + (int)rn5t618->variant); + return -ENOENT; + } + + ret = devm_regmap_add_irq_chip(rn5t618->dev, rn5t618->regmap, + rn5t618->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + 0, irq_chip, &rn5t618->irq_data); + if (ret) + dev_err(rn5t618->dev, "Failed to register IRQ chip\n"); + + return ret; +} + static void rn5t618_trigger_poweroff_sequence(bool repower) { /* disable automatic repower-on */ @@ -87,8 +146,7 @@ static const struct of_device_id rn5t618_of_match[] = { }; MODULE_DEVICE_TABLE(of, rn5t618_of_match); -static int rn5t618_i2c_probe(struct i2c_client *i2c, - const struct i2c_device_id *id) +static int rn5t618_i2c_probe(struct i2c_client *i2c) { const struct of_device_id *of_id; struct rn5t618 *priv; @@ -106,6 +164,8 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c, i2c_set_clientdata(i2c, priv); priv->variant = (long)of_id->data; + priv->irq = i2c->irq; + priv->dev = &i2c->dev; priv->regmap = devm_regmap_init_i2c(i2c, &rn5t618_regmap_config); if (IS_ERR(priv->regmap)) { @@ -114,8 +174,16 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c, return ret; } - ret = devm_mfd_add_devices(&i2c->dev, -1, rn5t618_cells, - ARRAY_SIZE(rn5t618_cells), NULL, 0, NULL); + if (priv->variant == RC5T619) + ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE, + rc5t619_cells, + ARRAY_SIZE(rc5t619_cells), + NULL, 0, NULL); + else + ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE, + rn5t618_cells, + ARRAY_SIZE(rn5t618_cells), + NULL, 0, NULL); if (ret) { dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret); return ret; @@ -138,7 +206,7 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c, return ret; } - return 0; + return rn5t618_irq_init(priv); } static int rn5t618_i2c_remove(struct i2c_client *i2c) @@ -155,19 +223,38 @@ static int rn5t618_i2c_remove(struct i2c_client *i2c) return 0; } -static const struct i2c_device_id rn5t618_i2c_id[] = { - { } -}; -MODULE_DEVICE_TABLE(i2c, rn5t618_i2c_id); +static int __maybe_unused rn5t618_i2c_suspend(struct device *dev) +{ + struct rn5t618 *priv = dev_get_drvdata(dev); + + if (priv->irq) + disable_irq(priv->irq); + + return 0; +} + +static int __maybe_unused rn5t618_i2c_resume(struct device *dev) +{ + struct rn5t618 *priv = dev_get_drvdata(dev); + + if (priv->irq) + enable_irq(priv->irq); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(rn5t618_i2c_dev_pm_ops, + rn5t618_i2c_suspend, + rn5t618_i2c_resume); static struct i2c_driver rn5t618_i2c_driver = { .driver = { .name = "rn5t618", .of_match_table = of_match_ptr(rn5t618_of_match), + .pm = &rn5t618_i2c_dev_pm_ops, }, - .probe = rn5t618_i2c_probe, + .probe_new = rn5t618_i2c_probe, .remove = rn5t618_i2c_remove, - .id_table = rn5t618_i2c_id, }; module_i2c_driver(rn5t618_i2c_driver); |