linux-kernel - [PATCH v3 0/8] can: mcp251xfd: add gpio functionality

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Date: Tue, 21 May 2024 15:04:50 +0200
From: Gregor Herburger <gregor.herburger@...tq-group.com>
To: Marc Kleine-Budde <mkl@...gutronix.de>, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
 Thomas Kopp <thomas.kopp@...rochip.com>, 
 Vincent Mailhol <mailhol.vincent@...adoo.fr>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-can@...r.kernel.org, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 linux@...tq-group.com, gregor.herburger@...tq-group.com, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 0/8] can: mcp251xfd: add gpio functionality

Hi all,

The mcp251xfd allows two pins to be configured as GPIOs. This series
adds support for this feature.

The GPIO functionality is controlled with the IOCON register which has
an erratum.

Patch 1-3 from https://lore.kernel.org/linux-can/20240429-mcp251xfd-runtime_pm-v1-0-c26a93a66544@pengutronix.de/
Patch 4 refactor of no-crc functions to prepare workaround for non-crc writes
Patch 5 is the fix/workaround for the aforementioned erratum
Patch 6 only configure pin1 for rx-int
Patch 7 adds the gpio support
Patch 8 updates dt-binding

---
Changes in v3:
- Implement workaround for non-crc writes
- Configure only Pin1 for rx-int feature
- moved errata check to .gather_write callback function
- Added MCP251XFD_REG_IOCON_*() macros
- Added Marcs suggestions
- Collect Krzysztofs Acked-By
- Link to v2: https://lore.kernel.org/r/20240506-mcp251xfd-gpio-feature-v2-0-615b16fa8789@ew.tq-group.com

Changes in v2:
- picked Marcs patches from https://lore.kernel.org/linux-can/20240429-mcp251xfd-runtime_pm-v1-0-c26a93a66544@pengutronix.de/
- Drop regcache
- Add pm_runtime in mcp251xfd_gpio_request/mcp251xfd_gpio_free
- Implement mcp251xfd_gpio_get_multiple/mcp251xfd_gpio_set_multiple
- Move check for rx_int/gpio conflict to mcp251xfd_gpio_request
- Link to v1: https://lore.kernel.org/r/20240417-mcp251xfd-gpio-feature-v1-0-bc0c61fd0c80@ew.tq-group.com

---
Gregor Herburger (5):
      can: mcp251xfd: utilize gather_write function for all non-CRC writes
      can: mcp251xfd: add workaround for errata 5
      can: mcp251xfd: only configure PIN1 when rx_int is set
      can: mcp251xfd: add gpio functionality
      dt-bindings: can: mcp251xfd: add gpio-controller property

Marc Kleine-Budde (3):
      can: mcp251xfd: properly indent labels
      can: mcp251xfd: move mcp251xfd_timestamp_start()/stop() into mcp251xfd_chip_start/stop()
      can: mcp251xfd: move chip sleep mode into runtime pm

 .../bindings/net/can/microchip,mcp251xfd.yaml      |   5 +
 drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c     | 338 ++++++++++++++++-----
 drivers/net/can/spi/mcp251xfd/mcp251xfd-dump.c     |   2 +-
 drivers/net/can/spi/mcp251xfd/mcp251xfd-regmap.c   | 116 +++++--
 drivers/net/can/spi/mcp251xfd/mcp251xfd-tef.c      |   2 +-
 .../net/can/spi/mcp251xfd/mcp251xfd-timestamp.c    |   7 +-
 drivers/net/can/spi/mcp251xfd/mcp251xfd-tx.c       |   2 +-
 drivers/net/can/spi/mcp251xfd/mcp251xfd.h          |  11 +
 8 files changed, 389 insertions(+), 94 deletions(-)
---
base-commit: 1fdad13606e104ff103ca19d2d660830cb36d43e
change-id: 20240417-mcp251xfd-gpio-feature-29a1bf6acb54

Best regards,
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