ab8500-charger: Add backup battery charge voltages on the ab8540
Add 2.7v, 2.9v, 3.0v, 3.2v and 3.3v charging voltages for backup
battery. Before that only 2.5v, 2.6v, 2.8v, 3.1v were available.
Signed-off-by: Yang QU <yang.qu@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Maxime COQUELIN <maxime.coquelin@stericsson.com>
Reviewed-by: Marcus COOPER <marcus.xm.cooper@stericsson.com>
Tested-by: Xiao Mei ZHANG <xiaomei.zhang@stericsson.com>
diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index 24b30b7..fd3fa2b 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -2836,6 +2836,7 @@
static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
{
int ret = 0;
+ u8 bup_vch_range = 0, vbup33_vrtcn = 0;
/* Setup maximum charger current and voltage for ABB cut2.0 */
if (!is_ab8500_1p1_or_earlier(di->parent)) {
@@ -2945,15 +2946,29 @@
}
/* Backup battery voltage and current */
+ if (di->bm->bkup_bat_v > BUP_VCH_SEL_3P1V)
+ bup_vch_range = BUP_VCH_RANGE;
+ if (di->bm->bkup_bat_v == BUP_VCH_SEL_3P3V)
+ vbup33_vrtcn = VBUP33_VRTCN;
+
ret = abx500_set_register_interruptible(di->dev,
AB8500_RTC,
AB8500_RTC_BACKUP_CHG_REG,
- di->bm->bkup_bat_v |
- di->bm->bkup_bat_i);
+ (di->bm->bkup_bat_v & 0x3) | di->bm->bkup_bat_i);
if (ret) {
dev_err(di->dev, "failed to setup backup battery charging\n");
goto out;
}
+ if (is_ab8540(di->parent)) {
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_RTC,
+ AB8500_RTC_CTRL1_REG,
+ bup_vch_range | vbup33_vrtcn);
+ if (ret) {
+ dev_err(di->dev, "failed to setup backup battery charging\n");
+ goto out;
+ }
+ }
/* Enable backup battery charging */
abx500_mask_and_set_register_interruptible(di->dev,