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https://github.com/Ysurac/openmptcprouter.git
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58 lines
1.8 KiB
Diff
58 lines
1.8 KiB
Diff
From 51cf413b28a5f2b625bf5e5d14f752c5161ef75a Mon Sep 17 00:00:00 2001
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From: Phil Howard <phil@gadgetoid.com>
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Date: Fri, 29 Mar 2019 10:53:14 +0000
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Subject: [PATCH 341/697] rtc: rv3028: Add backup switchover mode support
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Signed-off-by: Phil Howard <phil@pimoroni.com>
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---
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drivers/rtc/rtc-rv3028.c | 24 ++++++++++++++++++------
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1 file changed, 18 insertions(+), 6 deletions(-)
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--- a/drivers/rtc/rtc-rv3028.c
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+++ b/drivers/rtc/rtc-rv3028.c
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@@ -858,16 +858,17 @@ static const struct regmap_config regmap
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static u8 rv3028_set_trickle_charger(struct rv3028_data *rv3028,
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struct i2c_client *client)
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{
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- int ret, val_old, val;
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+ int ret, val_old, val, val_mask;
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u32 ohms, chargeable;
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+ u32 bsm;
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ret = regmap_read(rv3028->regmap, RV3028_BACKUP, &val_old);
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if (ret < 0)
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return ret;
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/* mask out only trickle charger bits */
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- val_old = val_old & (RV3028_BACKUP_TCE | RV3028_BACKUP_TCR_MASK);
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- val = val_old;
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+ val_mask = RV3028_BACKUP_TCE | RV3028_BACKUP_TCR_MASK;
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+ val = val_old & val_mask;
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/* setup trickle charger */
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if (!device_property_read_u32(&client->dev, "trickle-resistor-ohms",
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@@ -902,10 +903,21 @@ static u8 rv3028_set_trickle_charger(str
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}
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}
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+ /* setup backup switchover mode */
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+ if (!device_property_read_u32(&client->dev,
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+ "backup-switchover-mode",
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+ &bsm)) {
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+ if (bsm <= 3) {
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+ val_mask |= RV3028_BACKUP_BSM;
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+ val |= (u8)(bsm << 2);
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+ } else {
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+ dev_warn(&client->dev, "invalid backup switchover mode value\n");
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+ }
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+ }
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+
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/* only update EEPROM if changes are necessary */
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- if (val_old != val) {
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- ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, RV3028_BACKUP_TCE |
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- RV3028_BACKUP_TCR_MASK, val);
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+ if ((val_old & val_mask) != val) {
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+ ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, val_mask, val);
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if (ret)
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return ret;
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}
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