From patchwork Wed Jun 29 22:53:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marijn Suijten X-Patchwork-Id: 12900762 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B754ACCA481 for ; Wed, 29 Jun 2022 22:53:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229751AbiF2Wxi (ORCPT ); Wed, 29 Jun 2022 18:53:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229975AbiF2Wxh (ORCPT ); Wed, 29 Jun 2022 18:53:37 -0400 Received: from relay08.th.seeweb.it (relay08.th.seeweb.it [IPv6:2001:4b7a:2000:18::169]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB793237E7; Wed, 29 Jun 2022 15:53:34 -0700 (PDT) Received: from Marijn-Arch-PC.localdomain (94-209-165-62.cable.dynamic.v4.ziggo.nl [94.209.165.62]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by m-r2.th.seeweb.it (Postfix) with ESMTPSA id A50943F762; Thu, 30 Jun 2022 00:53:32 +0200 (CEST) From: Marijn Suijten To: phone-devel@vger.kernel.org, Dmitry Baryshkov , Stephen Boyd Cc: ~postmarketos/upstreaming@lists.sr.ht, AngeloGioacchino Del Regno , Konrad Dybcio , Martin Botka , Jami Kettunen , Marijn Suijten , Michael Turquette , Rob Clark , Abhinav Kumar , Sean Paul , David Airlie , Daniel Vetter , Rajeev Nandan , Vladimir Lypak , Jonathan Marek , linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [PATCH v3 00/11] drm/msm/dsi_phy: Replace parent names with clk_hw pointers Date: Thu, 30 Jun 2022 00:53:20 +0200 Message-Id: <20220629225331.357308-1-marijn.suijten@somainline.org> X-Mailer: git-send-email 2.37.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org parent_hw pointers are easier to manage and cheaper to use than repeatedly formatting the parent name and subsequently leaving the clk framework to perform lookups based on that name. This series starts out by adding extra constructors for divider, mux and fixed-factor clocks that have parent_hw(s) pointer argument(s) instead of some DT index or name. Followed by individual patches performing the conversion, one DSI PHY at a time. dsi_phy_28nm_8960 includes an extra fixup to replace "eternal" devm_kzalloc allocations (for the lifetime of the device) with stack-local char arrays, like all the other DSI PHY drivers. (Questions from v1 cover letter regarding the future of these drivers is omitted for brevity.) And with enough future improvements out of the way, let's round out this patch-series by stating that it has been successfully tested on: - Sony Nile Discovery (Xperia XA2 Ultra): 14nm; - Sony Seine PDX201 (Xperia 10II): 14nm; - Sony Loire Suzu (Xperia X): 28nm. And no diff is observed in debugfs's clk_summary. Unfortunately all other devices in my collection with a 7/10nm DSI PHY have a DSC panel which we have yet to get working. Changes since v2: - in fixed-factor: - Reorder if - else if change to consume less diff; - Go over 80-char column lint when adding new arguments to function calls, instead of reflowing all arguments to adhere to this limit; also consuming less diff. v2: https://lore.kernel.org/linux-arm-msm/20220601220747.1145095-1-marijn.suijten@somainline.org/ Changes since v1: - Moved indentation changes to separate patch (Dmitry); - dsi_phy_28nm_8960: move clock name allocation removal prior to parent_hw refactor; - Remove vco_name stack-local char array in favour of reusing clk_name (Dmitry); - Inserted additional patch to replace hardcoded char-array length constant 32 with sizeof(clk_name). v1: https://lore.kernel.org/linux-arm-msm/20220523213837.1016542-1-marijn.suijten@somainline.org/T/#u Marijn Suijten (11): clk: divider: Introduce devm_clk_hw_register_divider_parent_hw() clk: mux: Introduce devm_clk_hw_register_mux_parent_hws() clk: fixed-factor: Introduce *clk_hw_register_fixed_factor_parent_hw() drm/msm/dsi/phy: Reindent and reflow multiline function calls drm/msm/dsi_phy_28nm_8960: Use stack memory for temporary clock names drm/msm/dsi/phy: Replace hardcoded char-array length with sizeof() drm/msm/dsi_phy_28nm_8960: Replace parent names with clk_hw pointers drm/msm/dsi_phy_28nm: Replace parent names with clk_hw pointers drm/msm/dsi_phy_14nm: Replace parent names with clk_hw pointers drm/msm/dsi_phy_10nm: Replace parent names with clk_hw pointers drm/msm/dsi_phy_7nm: Replace parent names with clk_hw pointers drivers/clk/clk-fixed-factor.c | 45 ++++- drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 165 +++++++++--------- drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 55 +++--- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 117 ++++++------- .../gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 90 +++++----- drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 156 ++++++++--------- include/linux/clk-provider.h | 34 ++++ 7 files changed, 351 insertions(+), 311 deletions(-)