From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753209AbcLSANT (ORCPT ); Sun, 18 Dec 2016 19:13:19 -0500 Received: from mx1.redhat.com ([209.132.183.28]:59626 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752541AbcLSANS (ORCPT ); Sun, 18 Dec 2016 19:13:18 -0500 From: Hans de Goede To: MyungJoo Ham , Chanwoo Choi Cc: linux-kernel@vger.kernel.org, Hans de Goede Subject: [PATCH 3/8] extcon: axp288: Simplify axp288_handle_chrg_det_event Date: Mon, 19 Dec 2016 01:13:08 +0100 Message-Id: <20161219001313.13402-3-hdegoede@redhat.com> In-Reply-To: <20161219001313.13402-1-hdegoede@redhat.com> References: <20161219001313.13402-1-hdegoede@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Mon, 19 Dec 2016 00:13:18 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- drivers/extcon/extcon-axp288.c | 37 ++++++++++++------------------------- 1 file changed, 12 insertions(+), 25 deletions(-) diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c index 3d5e84e..43b3637 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; -- 2.9.3