linux-kernel - [PATCH v2 00/16] MIPS: move pic32.h header file from asm to platform

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Message-Id: <20260112-mips-pic32-header-move-v2-0-927d516b1ff9@redhat.com>
Date: Mon, 12 Jan 2026 17:47:54 -0500
From: Brian Masney <bmasney@...hat.com>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Claudiu Beznea <claudiu.beznea@...on.dev>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Brian Masney <bmasney@...hat.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org, 
 Thomas Gleixner <tglx@...utronix.de>, 
 Adrian Hunter <adrian.hunter@...el.com>, 
 Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org, 
 Linus Walleij <linusw@...nel.org>, linux-gpio@...r.kernel.org, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 linux-rtc@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Jiri Slaby <jirislaby@...nel.org>, linux-serial@...r.kernel.org, 
 Guenter Roeck <linux@...ck-us.net>, 
 Wim Van Sebroeck <wim@...ux-watchdog.org>, linux-watchdog@...r.kernel.org
Subject: [PATCH v2 00/16] MIPS: move pic32.h header file from asm to
 platform_data

There are currently some pic32 MIPS drivers that are in tree, and are
only configured to be compiled on the MIPS pic32 platform. There's a
risk of breaking some of these drivers when migrating drivers away from
legacy APIs. It happened to me with a pic32 clk driver.

Let's go ahead and move the pic32.h from the asm to the platform_data
include directory in the tree. This will make it easier, and cleaner to
enable COMPILE_TEST for some of these pic32 drivers. To do this requires
updating some includes, which I do at the beginning of this series.

This series was compile tested on a centos-stream-10 arm64 host in two
different configurations:

- native arm64 build with COMPILE_TEST (via make allmodconfig)
- MIPS cross compile on arm64 with:
      ARCH=mips CROSS_COMPILE=mips64-linux-gnu- make pic32mzda_defconfig

Note that there is a separate MIPS compile error in linux-next, and I
reported it at https://lore.kernel.org/all/aWVs2gVB418WiMVa@redhat.com/

I included a patch at the end that shows enabling COMPILE_TEST for a
pic32 clk driver.

Merge Strategy
==============
- Patches 1-15 can go through the MIPS tree.
- Patch 16 I can repost to Claudiu after patches 1-15 are in Linus's
  tree after the next merge window. There is a separate patch set that
  fixes a compiler error I unintentionally introduced via the clk tree.
  https://lore.kernel.org/linux-clk/CABx5tq+eOocJ41X-GSgkGy6S+s+Am1yCS099wqP695NtwALTmg@mail.gmail.com/T/

Signed-off-by: Brian Masney <bmasney@...hat.com>
---
Changes in v2:
- Fix native MIPS build by updating include files
- Link to v1: https://lore.kernel.org/r/20260109-mips-pic32-header-move-v1-0-99859c55783d@redhat.com

---
Brian Masney (16):
      MIPS: pic32: include linux/io.h header on several files
      MIPS: pic32: include linux/types.h on pic32.h
      MIPS: pic32: drop unused include linux/io.h from pic32.h
      MIPS: copy pic32.h header file from asm/mach-pic32/ to include/platform-data/
      MAINTAINERS: add include/linux/platform_data/pic32.h to MIPS entry
      MIPS: update include to use pic32.h from platform_data
      clk: microchip: core: update include to use pic32.h from platform_data
      irqchip/irq-pic32-evic: update include to use pic32.h from platform_data
      mmc: sdhci-pic32: update include to use pic32.h from platform_data
      pinctrl: pic32: update include to use pic32.h from platform_data
      rtc: pic32: update include to use pic32.h from platform_data
      serial: pic32_uart: update include to use pic32.h from platform_data
      watchdog: pic32-dmt: update include to use pic32.h from platform_data
      watchdog: pic32-wdt: update include to use pic32.h from platform_data
      MIPS: drop unused pic32.h header
      clk: microchip: core: allow driver to be compiled with COMPILE_TEST

 MAINTAINERS                                             |  1 +
 arch/mips/pic32/common/reset.c                          |  3 ++-
 arch/mips/pic32/pic32mzda/config.c                      |  3 +--
 arch/mips/pic32/pic32mzda/early_clk.c                   |  3 ++-
 arch/mips/pic32/pic32mzda/early_console.c               |  3 ++-
 drivers/clk/microchip/Kconfig                           |  2 +-
 drivers/clk/microchip/clk-core.c                        |  6 +++++-
 drivers/irqchip/irq-pic32-evic.c                        |  2 +-
 drivers/mmc/host/sdhci-pic32.c                          |  2 +-
 drivers/pinctrl/pinctrl-pic32.c                         |  3 +--
 drivers/rtc/rtc-pic32.c                                 |  3 +--
 drivers/tty/serial/pic32_uart.c                         |  3 +--
 drivers/watchdog/pic32-dmt.c                            |  3 +--
 drivers/watchdog/pic32-wdt.c                            |  3 +--
 .../mach-pic32 => include/linux/platform_data}/pic32.h  | 17 ++++++++++-------
 15 files changed, 31 insertions(+), 26 deletions(-)
---
base-commit: f417b7ffcbef7d76b0d8860518f50dae0e7e5eda
change-id: 20260109-mips-pic32-header-move-6ac9965aa70a

Best regards,
-- 
Brian Masney <bmasney@...hat.com>