linux-kernel - [PATCH 0/3] Samsung mfd/rtc driver alarm IRQ simplification

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Message-Id: <20251114-s5m-alarm-v1-0-c9b3bebae65f@linaro.org>
Date: Fri, 14 Nov 2025 11:47:20 +0000
From: André Draszik <andre.draszik@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>, Lee Jones <lee@...nel.org>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: Peter Griffin <peter.griffin@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Will McVicker <willmcvicker@...gle.com>, Juan Yescas <jyescas@...gle.com>, 
 Douglas Anderson <dianders@...omium.org>, kernel-team@...roid.com, 
 Kaustabh Chakraborty <kauschluss@...root.org>, linux-kernel@...r.kernel.org, 
 linux-samsung-soc@...r.kernel.org, linux-rtc@...r.kernel.org, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH 0/3] Samsung mfd/rtc driver alarm IRQ simplification

Hi,

With the attached patches the Samsung s5m RTC driver is simplified a
little bit with regards to alarm IRQ acquisition.

The end result is that instead of having a list of IRQ numbers for each
variant (and a BUILD_BUG_ON() to ensure consistency), the RTC driver
queries the 'alarm' platform resource from the parent (mfd cell).

Additionally, we can drop a now-useless field from runtime data,
reducing memory consumption slightly.

The attached patches must be applied in-order. I would expect them all
to go via the MFD tree. Alternatively, they could be applied one after
another during multiple kernel release cycles, but that seems a
needless complication.

Signed-off-by: André Draszik <andre.draszik@...aro.org>
---
André Draszik (3):
      mfd: sec: add rtc alarm IRQ as platform device resource
      rtc: s5m: query platform device IRQ resource for alarm IRQ
      mfd: sec: drop now unused struct sec_pmic_dev::irq_data

 drivers/mfd/sec-common.c         | 41 ++++++++++++++++++++++++++++++----------
 drivers/mfd/sec-core.h           |  2 +-
 drivers/mfd/sec-irq.c            | 10 ++--------
 drivers/rtc/rtc-s5m.c            | 21 ++++++++------------
 include/linux/mfd/samsung/core.h |  1 -
 5 files changed, 42 insertions(+), 33 deletions(-)
---
base-commit: b179ce312bafcb8c68dc718e015aee79b7939ff0
change-id: 20251114-s5m-alarm-3de705ea53ce

Best regards,
-- 
André Draszik <andre.draszik@...aro.org>