diff mbox series

[5.10.y-cip,16/31] rtc: expose correction feature

Message ID	20230816142017.147173-17-biju.das.jz@bp.renesas.com (mailing list archive)
State	Accepted
Headers	show Return-Path: <biju.das.jz@bp.renesas.com> ip: 210.160.252.171, mailfrom: biju.das.jz@bp.renesas.com) From: Biju Das <biju.das.jz@bp.renesas.com> To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>, Pavel Machek <pavel@denx.de> Cc: Biju Das <biju.das.jz@bp.renesas.com>, Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Subject: [PATCH 5.10.y-cip 16/31] rtc: expose correction feature Date: Wed, 16 Aug 2023 15:20:02 +0100 Message-Id: <20230816142017.147173-17-biju.das.jz@bp.renesas.com> In-Reply-To: <20230816142017.147173-1-biju.das.jz@bp.renesas.com> References: <20230816142017.147173-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	Add Renesas PMIC RAA215300 driver and builtin RTC support \| expand [5.10.y-cip,00/31] Add Renesas PMIC RAA215300 driver and builtin RTC support [5.10.y-cip,01/31] regulator: dt-bindings: Add Renesas RAA215300 PMIC bindings [5.10.y-cip,02/31] regulator: Add Renesas PMIC RAA215300 driver [5.10.y-cip,03/31] regulator: raa215300: Add build dependency with COMMON_CLK [5.10.y-cip,04/31] Documentation: list RTC devres helpers in devres.rst [5.10.y-cip,05/31] rtc: nvmem: remove nvram ABI [5.10.y-cip,06/31] rtc: rv3032: fix nvram nvmem priv pointer [5.10.y-cip,07/31] rtc: add devm_ prefix to rtc_nvmem_register() [5.10.y-cip,08/31] rtc: rework rtc_register_device() resource management [5.10.y-cip,09/31] rtc: shrink devm_rtc_allocate_device() [5.10.y-cip,10/31] rtc: destroy mutex when releasing the device [5.10.y-cip,11/31] rtc: fix RTC removal [5.10.y-cip,12/31] rtc: introduce features bitfield [5.10.y-cip,13/31] rtc: class: don't call cdev_device_del() when cdev_device_add() failed [5.10.y-cip,14/31] rtc: class: check return value when calling dev_set_name() [5.10.y-cip,15/31] rtc: add alarm related features [5.10.y-cip,16/31] rtc: expose correction feature [5.10.y-cip,17/31] rtc: rtc_update_irq_enable: rework UIE emulation [5.10.y-cip,18/31] rtc: expose RTC_FEATURE_UPDATE_INTERRUPT [5.10.y-cip,19/31] rtc: class: Fix potential memleak in devm_rtc_allocate_device() [5.10.y-cip,20/31] rtc: isl1208: quiet maybe-unused variable warning [5.10.y-cip,21/31] rtc: isl1208: do not advertise update interrupt feature if no interrupt specified [5.10.y-cip,22/31] dt-bindings: rtc: isl1208: Convert to json-schema [5.10.y-cip,23/31] dt-bindings: rtc: isil,isl1208: Document clock and clock-names properties [5.10.y-cip,24/31] rtc: isl1208: Drop name variable [5.10.y-cip,25/31] rtc: isl1208: Make similar I2C and DT-based matching table [5.10.y-cip,26/31] rtc: isl1208: Drop enum isl1208_id and split isl1208_configs[] [5.10.y-cip,27/31] rtc: isl1208: Add isl1208_set_xtoscb() [5.10.y-cip,28/31] rtc: isl1208: Add support for the built-in RTC on the PMIC RAA215300 [5.10.y-cip,29/31] arm64: defconfig: Enable PMIC RAA215300 and RTC ISL 1208 configs [5.10.y-cip,30/31] arm64: dts: renesas: rzg2l-smarc-som: Enable PMIC and built-in RTC [5.10.y-cip,31/31] arm64: dts: renesas: rzg2lc-smarc-som: Enable PMIC and built-in RTC

Commit Message

Biju Das Aug. 16, 2023, 2:20 p.m. UTC

From: Alexandre Belloni <alexandre.belloni@bootlin.com>

commit 2268551935dbf1abcbb4d4fb7b1ad74dbe0d1be0 upstream.

Add a new feature for RTCs able to correct the oscillator imprecision. This
is also called offset or trimming. Such drivers have a .set_offset callback,
use that to set the feature bit from the core.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20211018151933.76865-4-alexandre.belloni@bootlin.com
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 drivers/rtc/class.c      | 3 +++
 include/uapi/linux/rtc.h | 3 ++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff mbox series

Patch

diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index edd84ee38005..f521b90fa182 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -398,6 +398,9 @@  int __devm_rtc_register_device(struct module *owner, struct rtc_device *rtc)
 	if (!rtc->ops->set_alarm)
 		clear_bit(RTC_FEATURE_ALARM, rtc->features);
 
+	if (rtc->ops->set_offset)
+		set_bit(RTC_FEATURE_CORRECTION, rtc->features);
+
 	rtc->owner = owner;
 	rtc_device_get_offset(rtc);
 
diff --git a/include/uapi/linux/rtc.h b/include/uapi/linux/rtc.h
index f4037c541925..ef5113d061c4 100644
--- a/include/uapi/linux/rtc.h
+++ b/include/uapi/linux/rtc.h
@@ -116,7 +116,8 @@  struct rtc_pll_info {
 #define RTC_FEATURE_NEED_WEEK_DAY	2
 #define RTC_FEATURE_ALARM_RES_2S	3
 #define RTC_FEATURE_UPDATE_INTERRUPT	4
-#define RTC_FEATURE_CNT			5
+#define RTC_FEATURE_CORRECTION		5
+#define RTC_FEATURE_CNT			6
 
 #define RTC_MAX_FREQ	8192