From patchwork Fri Dec 20 11:29:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 13916647 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 534731C462D for ; Fri, 20 Dec 2024 11:30:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734694233; cv=none; b=hz5QQfWIgMH/uhUo/L5fBBtWiAafiJONPW9SHEbxrbfKRkl3ulEfexdh+IDOaVRDU8NjN51FTZ4R8uChHqGIFvqE6yA0wmZE9+D5Jyq7SeZ2ez9Hi8+rP3owjEm3yMu9c98gR9tmVivijKUdlhISU6c4NqfnA2n3NNTEkBVdG30= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734694233; c=relaxed/simple; bh=aDJUijj+npAEq/jYvHNfTGdquE1R8rihjhhAzvV3KOI=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=bzPf2XtHeKCSG6IFHdKVU5yZOEKE2hwTZc77ait2Pl8Px0JUvbL+nBj0kGrOS2rdeWJwreMUiWKFUjdSgRSn9ZBUg+dXcy8HtMnqu9AJEOhhXSwJmTCYCSqU7iEUbauGn1lbp5JHzZGWBqa3AzOSaEZVt6/RDM2yadUJBBjUats= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=Zr1r0Bi5; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="Zr1r0Bi5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :mime-version:content-transfer-encoding; s=k1; bh=qQIh3wUDa4kRyy tLvPuCivNA0Fsl6gM39oMEUiYc93g=; b=Zr1r0Bi5VfddcWJhKWorSFb/tN7xMx Hwu+GECAaxRPk77bHYk/y1Vf1k6/nw9xMcOqU3zpB6HQW1w3tRjRZmFjSATxGWGI ZbXtVMxdFBYEAJFsCO3U+NUPxRc6CiBD6Q+2+beVyjTrDkg9wae2TzIJeGyyWZOa tU74jRLNgY9krfw+CgKYZ1SgpVfYCoQ6MjI41uabBm4Yf2ddaB7tTHh40fp34sNp I7JWBb157G5RHSAsrETRKU5Z2WMrSXZIi0xdHZZe1AdfnnpR3jizSikOtqgivX/+ JDIhbvnNSFOmRm0VDzvlABFjmMftU9mNfFkHeXk2mPvrQU7zY3TKDRuw== Received: (qmail 989625 invoked from network); 20 Dec 2024 12:30:18 +0100 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 20 Dec 2024 12:30:18 +0100 X-UD-Smtp-Session: l3s3148p1@m52y+LEpTpAujnsY From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: Yury Norov , Wolfram Sang , Alexandre Belloni , Guenter Roeck , Jean Delvare , linux-hwmon@vger.kernel.org, linux-i3c@lists.infradead.org, =?utf-8?q?Przem?= =?utf-8?q?ys=C5=82aw_Gaj?= Subject: [PATCH RFT 0/5] i3c: introduce and use generic parity helper Date: Fri, 20 Dec 2024 12:29:54 +0100 Message-Id: <20241220113000.17537-1-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 I am currently working on upstreaming another I3C controller driver. As many others, it needs to ensure odd parity for a dynamically assigned address. The BSP version of the driver implemented a custom parity algorithm. Wondering why we don't have a generic helper for this in the kernel, I found that many I3C controller drivers all implement their version of handling parity. So, I sent out an RFC[1] moving the efficient implementation of the SPD5118 driver to a generic location. The series was well received, but the path for upstream was not clear. Because I need the implementation for my I3C controller driver and I3C is a prominent user of this new function, I got the idea of converting the existing I3C drivers and resend the series, suggesting this all goes upstream via I3C. Is this acceptable? The non-I3C patches have all the tags they need, only the I3C patches would need testing on hardware. A locally build-tested branch is here: git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git renesas/i3c/get_parity Looking forward to comments... [1] https://lore.kernel.org/all/20241214085833.8695-1-wsa+renesas@sang-engineering.com/ Wolfram Sang (5): bitops: add generic parity calculation for u8 hwmon: (spd5118) Use generic parity calculation i3c: dw: use get_parity8 helper instead of open coding it i3c: mipi-i3c-hci: use get_parity8 helper instead of open coding it i3c: cdns: use get_parity8 helper instead of open coding it drivers/hwmon/spd5118.c | 8 +----- drivers/i3c/master/dw-i3c-master.c | 14 +++-------- drivers/i3c/master/i3c-master-cdns.c | 3 +-- drivers/i3c/master/mipi-i3c-hci/dat_v1.c | 11 +-------- include/linux/bitops.h | 31 ++++++++++++++++++++++++ 5 files changed, 37 insertions(+), 30 deletions(-)