linux-kernel - [PATCH RFC 0/3] can: calc_bittiming: add sample point calculation for PWM encoding

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Message-Id: <20251102-pwm_sample_point-v1-0-3bbea180f59e@kernel.org>
Date: Sun, 02 Nov 2025 23:01:21 +0100
From: Vincent Mailhol <mailhol@...nel.org>
To: Marc Kleine-Budde <mkl@...gutronix.de>, 
 Oliver Hartkopp <socketcan@...tkopp.net>
Cc: linux-can@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Vincent Mailhol <mailhol@...nel.org>
Subject: [PATCH RFC 0/3] can: calc_bittiming: add sample point calculation
 for PWM encoding

I wrote this series in response to Oliver's feedback in [1]. I am
sending this as an RFC based on top of [2] for the moment so that we
can discuss this separately. The plan is to merge this to the CAN XL
branch once we reach a consensus on this part.

Patch #1 and #2 are refactors, patch #3 introduces a dedicated
function for the PWM sample point calculation.

[1] https://lore.kernel.org/linux-can/743ba133-3735-48fd-994a-9727cfe8c114@hartkopp.net/

[2] [PATCH v2 00/10] can: netlink: add CAN XL
Link: https://lore.kernel.org/linux-can/20251021-canxl-netlink-v2-0-8b8f58257ab6@kernel.org/

Signed-off-by: Vincent Mailhol <mailhol@...nel.org>
---
Vincent Mailhol (3):
      can: calc_bittiming: get rid of the incorrect "nominal" word
      can: calc_bittiming: add can_calc_sample_point_nrz()
      can: calc_bittiming: add can_calc_sample_point_pwm()

 drivers/net/can/dev/calc_bittiming.c | 68 ++++++++++++++++++++++++------------
 1 file changed, 45 insertions(+), 23 deletions(-)
---
base-commit: ffee675aceb9f44b0502a8bec912abb0c4f4af62
change-id: 20251102-pwm_sample_point-8823cb3cd459
prerequisite-change-id: 20241229-canxl-netlink-bc640af10673:v2
prerequisite-patch-id: 6b3294205bd76b38257516c63b7001ab242c9b62
prerequisite-patch-id: 56431d12edcc0f325cf5204bb6868742c462c0ed
prerequisite-patch-id: 1547fd7ea8f1937f0491cfc0996b09890f850991
prerequisite-patch-id: 1dae270b0454352e46b927f71d1b47ff2bf7a49e
prerequisite-patch-id: e4d43de873dfdefc023a0b86e397b37ea2b9e9a3
prerequisite-patch-id: 4f3db477ff411effe70075c59ae6eac04fc65600
prerequisite-patch-id: 148dbfce9d3bb09537087ee93e60bb7819bdadee
prerequisite-patch-id: 7996539e26d449e8db260425c7287b4dce8cdf35
prerequisite-patch-id: 42215044df6a63fff07c7a7d771d7dc375cc8b0e
prerequisite-patch-id: 640ebf8ac8a1d114dcb91e6c05b9414bd09416fc
prerequisite-patch-id: 84ee5e4f937f8e4cd97833d601affea78fe55914

Best regards,
-- 
Vincent Mailhol <mailhol@...nel.org>