From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keerthy Subject: [PATCH v3 1/4] rtc: omap: Cut down the shutdown time from 2 seconds to 1 sec Date: Tue, 10 Jul 2018 12:20:49 +0530 Message-ID: <1531205452-6086-2-git-send-email-j-keerthy@ti.com> References: <1531205452-6086-1-git-send-email-j-keerthy@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1531205452-6086-1-git-send-email-j-keerthy@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: a.zummo@towertech.it, alexandre.belloni@bootlin.com Cc: t-kristo@ti.com, j-keerthy@ti.com, linux-rtc@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, johan@kernel.org List-Id: linux-omap@vger.kernel.org Cut down the shutdown time from 2 seconds to 1 sec. In case of roll over try again. Signed-off-by: Keerthy --- drivers/rtc/rtc-omap.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index 323ff55..14f2241 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -441,11 +441,12 @@ static void omap_rtc_power_off(void) val = rtc_readl(rtc, OMAP_RTC_PMIC_REG); rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN); - /* set alarm two seconds from now */ +again: + /* set alarm one second from now */ omap_rtc_read_time_raw(rtc, &tm); bcd2tm(&tm); rtc_tm_to_time(&tm, &now); - rtc_time_to_tm(now + 2, &tm); + rtc_time_to_tm(now + 1, &tm); if (tm2bcd(&tm) < 0) { dev_err(&rtc->rtc->dev, "power off failed\n"); @@ -455,6 +456,10 @@ static void omap_rtc_power_off(void) rtc_wait_not_busy(rtc); + /* Our calculations started right before the rollover, try again */ + if (seconds != rtc_read(omap_rtc_power_off_rtc, OMAP_RTC_SECONDS_REG)) + goto again; + rtc_write(rtc, OMAP_RTC_ALARM2_SECONDS_REG, tm.tm_sec); rtc_write(rtc, OMAP_RTC_ALARM2_MINUTES_REG, tm.tm_min); rtc_write(rtc, OMAP_RTC_ALARM2_HOURS_REG, tm.tm_hour); -- 1.9.1