mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
83 lines
2.4 KiB
Diff
83 lines
2.4 KiB
Diff
From 83cbc83905d756a4da933af63c86ca37d6af64f9 Mon Sep 17 00:00:00 2001
|
|
From: Phil Howard <phil@gadgetoid.com>
|
|
Date: Fri, 29 Mar 2019 10:53:14 +0000
|
|
Subject: [PATCH] rtc: rv3028: Add backup switchover mode support
|
|
|
|
Signed-off-by: Phil Howard <phil@pimoroni.com>
|
|
---
|
|
drivers/rtc/rtc-rv3028.c | 45 +++++++++++++++++++++++++++++++++++-----
|
|
1 file changed, 40 insertions(+), 5 deletions(-)
|
|
|
|
--- a/drivers/rtc/rtc-rv3028.c
|
|
+++ b/drivers/rtc/rtc-rv3028.c
|
|
@@ -860,6 +860,8 @@ static int rv3028_probe(struct i2c_clien
|
|
struct rv3028_data *rv3028;
|
|
int ret, status;
|
|
u32 ohms;
|
|
+ u32 bsm;
|
|
+ u8 backup, backup_bits, backup_mask;
|
|
struct nvmem_config nvmem_cfg = {
|
|
.name = "rv3028_nvram",
|
|
.word_size = 1,
|
|
@@ -926,6 +928,21 @@ static int rv3028_probe(struct i2c_clien
|
|
if (ret)
|
|
return ret;
|
|
|
|
+ backup_bits = 0;
|
|
+ backup_mask = 0;
|
|
+
|
|
+ /* setup backup switchover mode */
|
|
+ if (!device_property_read_u32(&client->dev,
|
|
+ "backup-switchover-mode",
|
|
+ &bsm)) {
|
|
+ if (bsm <= 3) {
|
|
+ backup_bits |= (u8)(bsm << 2);
|
|
+ backup_mask |= RV3028_BACKUP_BSM;
|
|
+ } else {
|
|
+ dev_warn(&client->dev, "invalid backup switchover mode value\n");
|
|
+ }
|
|
+ }
|
|
+
|
|
/* setup trickle charger */
|
|
if (!device_property_read_u32(&client->dev, "trickle-resistor-ohms",
|
|
&ohms)) {
|
|
@@ -936,15 +953,33 @@ static int rv3028_probe(struct i2c_clien
|
|
break;
|
|
|
|
if (i < ARRAY_SIZE(rv3028_trickle_resistors)) {
|
|
- ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, RV3028_BACKUP_TCE |
|
|
- RV3028_BACKUP_TCR_MASK, RV3028_BACKUP_TCE | i);
|
|
- if (ret)
|
|
- return ret;
|
|
+ backup_bits |= RV3028_BACKUP_TCE | i;
|
|
+ backup_mask |= RV3028_BACKUP_TCE |
|
|
+ RV3028_BACKUP_TCR_MASK;
|
|
} else {
|
|
- dev_warn(&client->dev, "invalid trickle resistor value\n");
|
|
+ dev_warn(&client->dev,
|
|
+ "invalid trickle resistor value\n");
|
|
}
|
|
}
|
|
|
|
+ if (backup_mask) {
|
|
+ ret = rv3028_eeprom_read((void *)rv3028, RV3028_BACKUP,
|
|
+ (void *)&backup, 1);
|
|
+ /* Write register and EEPROM if needed */
|
|
+ if (!ret && (backup & backup_mask) != backup_bits) {
|
|
+ backup = (backup & ~backup_mask) | backup_bits;
|
|
+ ret = rv3028_update_cfg(rv3028, RV3028_BACKUP,
|
|
+ backup_mask, backup_bits);
|
|
+ }
|
|
+
|
|
+ /* In the event of an EEPROM failure, just update the register */
|
|
+ if (ret)
|
|
+ ret = regmap_update_bits(rv3028->regmap, RV3028_BACKUP,
|
|
+ backup_mask, backup_bits);
|
|
+ if (ret)
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
ret = rtc_add_group(rv3028->rtc, &rv3028_attr_group);
|
|
if (ret)
|
|
return ret;
|