linux-kernel - [PATCH v3 0/2] pwm: rzg2l-gpt: Adaptation to waveform callbacks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250915163637.3572-1-biju.das.jz@bp.renesas.com>
Date: Mon, 15 Sep 2025 17:36:29 +0100
From: Biju <biju.das.au@...il.com>
To: Uwe Kleine-König <ukleinek@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	linux-pwm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
	Biju Das <biju.das.au@...il.com>,
	linux-renesas-soc@...r.kernel.org
Subject: [PATCH v3 0/2] pwm: rzg2l-gpt: Adaptation to waveform callbacks

From: Biju Das <biju.das.jz@...renesas.com>

Convert the rzg2l-gpt driver to use the new callbacks for hardware
programming. The first patch fixes an issue where cache value is
uninitialized during disable().

v2->v3:
 * Prepared as a series.
 * Created separate patch for fix for reinitialization of the cache
   variable in disable().
 * .round_waveform_tohw() do not fail if the requested period is too small
   but use the smallest possible value.
 * Added lock in rzg2l_gpt_read_waveform().
 * wfhw is reinitialized in rzg2l_gpt_read_waveform if channel is disabled
 * Optimizated rzg2l_gpt_is_ch_enabled() to avoid redundant reads to 
   RZG2L_GTCR(ch).
 * .write_waveform() returns error incase of invalid period for second
   channel.

Biju Das (2):
  pwm: rzg2l-gpt: Reinitialize cache value
  pwm: rzg2l-gpt: Implementation of the waveform callbacks

 drivers/pwm/pwm-rzg2l-gpt.c | 197 ++++++++++++++++++++++--------------
 1 file changed, 121 insertions(+), 76 deletions(-)

base-commit: 590b221ed4256fd6c34d3dea77aa5bd6e741bbc1
-- 
2.43.0