linux-kernel - [PATCH v2 0/4] samsung: pinctrl: Add support for eint_fltcon

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Message-Id: <20250301-pinctrl-fltcon-suspend-v2-0-a7eef9bb443b@linaro.org>
Date: Sat, 01 Mar 2025 11:43:18 +0000
From: Peter Griffin <peter.griffin@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Linus Walleij <linus.walleij@...aro.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 andre.draszik@...aro.org, tudor.ambarus@...aro.org, willmcvicker@...gle.com, 
 semen.protsenko@...aro.org, kernel-team@...roid.com, 
 jaewon02.kim@...sung.com, Peter Griffin <peter.griffin@...aro.org>, 
 stable@...r.kernel.org
Subject: [PATCH v2 0/4] samsung: pinctrl: Add support for
 eint_fltcon_offset and filter selection on gs101

Hi folks,

This series fixes support for correctly saving and restoring fltcon0
and fltcon1 registers on gs101 for non-alive banks where the fltcon
register offset is not at a fixed offset (unlike previous SoCs).
This is done by adding a eint_fltcon_offset and providing GS101
specific pin macros that take an additional parameter (similar to
how exynosautov920 handles it's eint_con_offset).

Additionally the SoC specific suspend and resume callbacks are
re-factored so that each SoC variant has it's own callback containing
the peculiarities for that SoC.

Finally support for filter selection on alive banks is added, this is
currently only enabled for gs101. The code path can be excercised using
`echo mem > /sys/power/state`

regards,

Peter

To: Krzysztof Kozlowski <krzk@...nel.org>
To: Sylwester Nawrocki <s.nawrocki@...sung.com>
To: Alim Akhtar <alim.akhtar@...sung.com>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-samsung-soc@...r.kernel.org
Cc: linux-gpio@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: andre.draszik@...aro.org
Cc: tudor.ambarus@...aro.org
Cc: willmcvicker@...gle.com
Cc: semen.protsenko@...aro.org
Cc: kernel-team@...roid.com
Cc: jaewon02.kim@...sung.com

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
---
Changes in v2:
- Remove eint_flt_selectable bool as it can be deduced from EINT_TYPE_WKUP (Peter)
- Move filter config register comment to header file (Andre)
- Rename EXYNOS_FLTCON_DELAY to EXYNOS_FLTCON_ANALOG (Andre)
- Remove misleading old comment (Andre)
- Refactor exynos_eint_update_flt_reg() into a loop (Andre)
- Split refactor of suspend/resume callbacks & gs101 parts into separate patches (Andre)
- Link to v1: https://lore.kernel.org/r/20250120-pinctrl-fltcon-suspend-v1-0-e77900b2a854@linaro.org

---
Peter Griffin (4):
      pinctrl: samsung: add support for eint_fltcon_offset
      pinctrl: samsung: add dedicated SoC eint suspend/resume callbacks
      pinctrl: samsung: add gs101 specific eint suspend/resume callbacks
      pinctrl: samsung: Add filter selection support for alive bank on gs101

 drivers/pinctrl/samsung/pinctrl-exynos-arm64.c | 150 ++++++-------
 drivers/pinctrl/samsung/pinctrl-exynos.c       | 293 +++++++++++++++----------
 drivers/pinctrl/samsung/pinctrl-exynos.h       |  51 ++++-
 drivers/pinctrl/samsung/pinctrl-samsung.c      |  12 +-
 drivers/pinctrl/samsung/pinctrl-samsung.h      |  12 +-
 5 files changed, 321 insertions(+), 197 deletions(-)
---
base-commit: f7da3699c901aea6a009d38116d24c67a4c9662e
change-id: 20250120-pinctrl-fltcon-suspend-2333a137c4d4

Best regards,
-- 
Peter Griffin <peter.griffin@...aro.org>