From 61598093bbdd283a7edc367d900f223070ead8d2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:03 +0000
Subject: [PATCH] add ax88772C AX88772C_eeprom_tools
---
kernel/drivers/rtc/rtc-max77686.c | 71 ++++++++++++++++++++++-------------
1 files changed, 44 insertions(+), 27 deletions(-)
diff --git a/kernel/drivers/rtc/rtc-max77686.c b/kernel/drivers/rtc/rtc-max77686.c
index 8e09450..eae7cb9 100644
--- a/kernel/drivers/rtc/rtc-max77686.c
+++ b/kernel/drivers/rtc/rtc-max77686.c
@@ -78,6 +78,8 @@
int alarm_pending_status_reg;
/* RTC IRQ CHIP for regmap */
const struct regmap_irq_chip *rtc_irq_chip;
+ /* regmap configuration for the chip */
+ const struct regmap_config *regmap_config;
};
struct max77686_rtc_info {
@@ -182,6 +184,11 @@
.num_irqs = ARRAY_SIZE(max77686_rtc_irqs),
};
+static const struct regmap_config max77686_rtc_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
static const struct max77686_rtc_driver_data max77686_drv_data = {
.delay = 16000,
.mask = 0x7f,
@@ -191,6 +198,13 @@
.alarm_pending_status_reg = MAX77686_REG_STATUS2,
.rtc_i2c_addr = MAX77686_I2C_ADDR_RTC,
.rtc_irq_chip = &max77686_rtc_irq_chip,
+ .regmap_config = &max77686_rtc_regmap_config,
+};
+
+static const struct regmap_config max77620_rtc_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .use_single_write = true,
};
static const struct max77686_rtc_driver_data max77620_drv_data = {
@@ -202,6 +216,7 @@
.alarm_pending_status_reg = MAX77686_INVALID_REG,
.rtc_i2c_addr = MAX77620_I2C_ADDR_RTC,
.rtc_irq_chip = &max77686_rtc_irq_chip,
+ .regmap_config = &max77620_rtc_regmap_config,
};
static const unsigned int max77802_map[REG_RTC_END] = {
@@ -658,11 +673,6 @@
return ret;
}
-static const struct regmap_config max77686_rtc_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-};
-
static int max77686_init_rtc_regmap(struct max77686_rtc_info *info)
{
struct device *parent = info->dev->parent;
@@ -673,11 +683,8 @@
struct platform_device *pdev = to_platform_device(info->dev);
info->rtc_irq = platform_get_irq(pdev, 0);
- if (info->rtc_irq < 0) {
- dev_err(info->dev, "Failed to get rtc interrupts: %d\n",
- info->rtc_irq);
+ if (info->rtc_irq < 0)
return info->rtc_irq;
- }
} else {
info->rtc_irq = parent_i2c->irq;
}
@@ -693,19 +700,19 @@
goto add_rtc_irq;
}
- info->rtc = i2c_new_dummy(parent_i2c->adapter,
- info->drv_data->rtc_i2c_addr);
- if (!info->rtc) {
+ info->rtc = devm_i2c_new_dummy_device(info->dev, parent_i2c->adapter,
+ info->drv_data->rtc_i2c_addr);
+ if (IS_ERR(info->rtc)) {
dev_err(info->dev, "Failed to allocate I2C device for RTC\n");
- return -ENODEV;
+ return PTR_ERR(info->rtc);
}
info->rtc_regmap = devm_regmap_init_i2c(info->rtc,
- &max77686_rtc_regmap_config);
+ info->drv_data->regmap_config);
if (IS_ERR(info->rtc_regmap)) {
ret = PTR_ERR(info->rtc_regmap);
dev_err(info->dev, "Failed to allocate RTC regmap: %d\n", ret);
- goto err_unregister_i2c;
+ return ret;
}
add_rtc_irq:
@@ -715,15 +722,10 @@
&info->rtc_irq_data);
if (ret < 0) {
dev_err(info->dev, "Failed to add RTC irq chip: %d\n", ret);
- goto err_unregister_i2c;
+ return ret;
}
return 0;
-
-err_unregister_i2c:
- if (info->rtc)
- i2c_unregister_device(info->rtc);
- return ret;
}
static int max77686_rtc_probe(struct platform_device *pdev)
@@ -786,8 +788,6 @@
err_rtc:
regmap_del_irq_chip(info->rtc_irq, info->rtc_irq_data);
- if (info->rtc)
- i2c_unregister_device(info->rtc);
return ret;
}
@@ -798,8 +798,6 @@
free_irq(info->virq, info);
regmap_del_irq_chip(info->rtc_irq, info->rtc_irq_data);
- if (info->rtc)
- i2c_unregister_device(info->rtc);
return 0;
}
@@ -807,17 +805,36 @@
#ifdef CONFIG_PM_SLEEP
static int max77686_rtc_suspend(struct device *dev)
{
+ struct max77686_rtc_info *info = dev_get_drvdata(dev);
+ int ret = 0;
+
if (device_may_wakeup(dev)) {
struct max77686_rtc_info *info = dev_get_drvdata(dev);
- return enable_irq_wake(info->virq);
+ ret = enable_irq_wake(info->virq);
}
- return 0;
+ /*
+ * If the main IRQ (not virtual) is the parent IRQ, then it must be
+ * disabled during suspend because if it happens while suspended it
+ * will be handled before resuming I2C.
+ *
+ * Since Main IRQ is shared, all its users should disable it to be sure
+ * it won't fire while one of them is still suspended.
+ */
+ if (!info->drv_data->rtc_irq_from_platform)
+ disable_irq(info->rtc_irq);
+
+ return ret;
}
static int max77686_rtc_resume(struct device *dev)
{
+ struct max77686_rtc_info *info = dev_get_drvdata(dev);
+
+ if (!info->drv_data->rtc_irq_from_platform)
+ enable_irq(info->rtc_irq);
+
if (device_may_wakeup(dev)) {
struct max77686_rtc_info *info = dev_get_drvdata(dev);
--
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