{"id":2223546,"url":"http://patchwork.ozlabs.org/api/covers/2223546/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pwm/cover/cover.1776264104.git.u.kleine-koenig@baylibre.com/","project":{"id":38,"url":"http://patchwork.ozlabs.org/api/projects/38/?format=json","name":"Linux PWM development","link_name":"linux-pwm","list_id":"linux-pwm.vger.kernel.org","list_email":"linux-pwm@vger.kernel.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"","list_archive_url":null,"date":"2026-04-15T14:50:11","name":"[v1,0/2] pwm: stm32: A rounding fix and a cleanup","submitter":{"id":88686,"url":"http://patchwork.ozlabs.org/api/people/88686/?format=json","name":"Uwe Kleine-König","email":"u.kleine-koenig@baylibre.com"},"mbox":"http://patchwork.ozlabs.org/project/linux-pwm/cover/cover.1776264104.git.u.kleine-koenig@baylibre.com/mbox/","series":[{"id":500001,"url":"http://patchwork.ozlabs.org/api/series/500001/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pwm/list/?series=500001","date":"2026-04-15T14:50:11","name":"pwm: stm32: A rounding fix and a cleanup","version":1,"mbox":"http://patchwork.ozlabs.org/series/500001/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2223546/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pwm@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=baylibre-com.20251104.gappssmtp.com\n header.i=@baylibre-com.20251104.gappssmtp.com header.a=rsa-sha256\n header.s=20251104 header.b=XVFWjk6k;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::12fc:5321; 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charset=UTF-8","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1023;\n i=u.kleine-koenig@baylibre.com; h=from:subject:message-id;\n bh=Ev/XoHpc/zuPC3jNLuLXs/GGVRgRWnbEC5JNIWTtnCQ=;\n b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBp36Wjy7gOvxddwOd586qrs+Qr4Imv1lEkngzDs\n a0aP4AneEOJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCad+lowAKCRCPgPtYfRL+\n TuWdB/sHjGdz6bLApfg5wvD90asOZlq5wB95iiT/6qRsVYZNCaJZvEINb9YE4OEuA2dTiBjambl\n b6WdQWEge1t3Wo4OZ52Doxb8A3k18jC6nvZOptwlnTK91Q9fXC8RNq1J1ozziVeRfXq+dAI7HMQ\n 8en5ZtFdJ/DF9/q9wIZtpXjPVJwQ751TKrA98Lqvjkbs7kzbrLqnVOHnnAcolIoxzP5+r14HpY5\n EsoWfhrDwAfycXsU8De7046F6a+uS875tdeB+Lx4Ehcf1MgsV8b/378tlBM4AE/iZI2ic6WGgu6\n /RnTXNof99lHnCe70yk1qU9UXAZew5PooAETyvnRFB9uMBBm","X-Developer-Key":"i=u.kleine-koenig@baylibre.com; a=openpgp;\n fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6","Content-Transfer-Encoding":"8bit"},"content":"Hello,\n\nI extended pwmtestperf (part of libpwm[1]) to allow testing inversed\npolarity wave forms. I'm not sure if I should like it or not, but this\nimmediately showed a rounding issue in the stm32 pwm driver. This is\nfixed in the first commit.\n\nThe 2nd commit is just a cleanup that I have on my todo list for a\nwhile. This required the addition of mul_u64_u64_div_u64_roundup() which\nexists since v6.19-rc1~70^2~90.\n\nI intend to send the fix to Linus before 7.1, but will give it a bit of\ntime in next before. The cleanup will wait until the next merge window.\n\nBest regards\nUwe\n\n[1] https://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/libpwm.git\n\nUwe Kleine-König (2):\n pwm: stm32: Fix rounding issue for requests with inverted polarity\n pwm: stm32: Make use of mul_u64_u64_div_u64_roundup()\n\n drivers/pwm/pwm-stm32.c | 49 ++++++++++++++---------------------------\n 1 file changed, 17 insertions(+), 32 deletions(-)\n\n\nbase-commit: 028ef9c96e96197026887c0f092424679298aae8"}