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authorHans de Goede <hdegoede@redhat.com>2016-12-19 03:13:08 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2017-01-09 04:04:10 +0300
commit3fe1e0e2ab509863c1e9809a085508d8bce3e079 (patch)
tree9052aec883ac2d545a2fcf8c39127d718a75c494 /drivers/extcon
parent1490d157e0759b12913cc0d3b734a03bbcb8cb61 (diff)
downloadlinux-3fe1e0e2ab509863c1e9809a085508d8bce3e079.tar.xz
extcon: axp288: Simplify axp288_handle_chrg_det_event
axp288_handle_chrg_det_event only gets called on change interrupts (so not that often), extcon_set_state_sync() checks itself if there are any actual changes before notifying listeners, and gpiod_set_value is not really expensive either. So we can simply always do both on each interrupt removing a bunch of somewhat magic looking code from axp288_handle_chrg_det_event. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/extcon')
-rw-r--r--drivers/extcon/extcon-axp288.c37
1 files changed, 12 insertions, 25 deletions
diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c
index 3d5e84ea489d..43b3637a71a9 100644
--- a/drivers/extcon/extcon-axp288.c
+++ b/drivers/extcon/extcon-axp288.c
@@ -154,7 +154,6 @@ static void axp288_extcon_log_rsi(struct axp288_extcon_info *info)
static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
{
- static bool notify_otg, notify_charger;
static unsigned int cable;
int ret, stat, cfg, pwr_stat;
u8 chrg_type;
@@ -168,7 +167,7 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
vbus_attach = (pwr_stat & PS_STAT_VBUS_PRESENT);
if (!vbus_attach)
- goto notify_otg;
+ goto no_vbus;
/* Check charger detection completion status */
ret = regmap_read(info->regmap, AXP288_BC_GLOBAL_REG, &cfg);
@@ -188,19 +187,14 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
switch (chrg_type) {
case DET_STAT_SDP:
dev_dbg(info->dev, "sdp cable is connected\n");
- notify_otg = true;
- notify_charger = true;
cable = EXTCON_CHG_USB_SDP;
break;
case DET_STAT_CDP:
dev_dbg(info->dev, "cdp cable is connected\n");
- notify_otg = true;
- notify_charger = true;
cable = EXTCON_CHG_USB_CDP;
break;
case DET_STAT_DCP:
dev_dbg(info->dev, "dcp cable is connected\n");
- notify_charger = true;
cable = EXTCON_CHG_USB_DCP;
break;
default:
@@ -208,24 +202,17 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
"disconnect or unknown or ID event\n");
}
-notify_otg:
- if (notify_otg) {
- /*
- * If VBUS is absent Connect D+/D- lines to PMIC for BC
- * detection. Else connect them to SOC for USB communication.
- */
- if (info->gpio_mux_cntl)
- gpiod_set_value(info->gpio_mux_cntl,
- vbus_attach ? EXTCON_GPIO_MUX_SEL_SOC
- : EXTCON_GPIO_MUX_SEL_PMIC);
- }
-
- if (notify_charger)
- extcon_set_state_sync(info->edev, cable, vbus_attach);
-
- /* Clear the flags on disconnect event */
- if (!vbus_attach)
- notify_otg = notify_charger = false;
+no_vbus:
+ /*
+ * If VBUS is absent Connect D+/D- lines to PMIC for BC
+ * detection. Else connect them to SOC for USB communication.
+ */
+ if (info->gpio_mux_cntl)
+ gpiod_set_value(info->gpio_mux_cntl,
+ vbus_attach ? EXTCON_GPIO_MUX_SEL_SOC
+ : EXTCON_GPIO_MUX_SEL_PMIC);
+
+ extcon_set_state_sync(info->edev, cable, vbus_attach);
return 0;