From patchwork Mon Mar 1 23:24:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 390457 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37C72C433E0 for ; Tue, 2 Mar 2021 07:59:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E0D916146D for ; Tue, 2 Mar 2021 07:59:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240988AbhCBEoi (ORCPT ); Mon, 1 Mar 2021 23:44:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345623AbhCAX0v (ORCPT ); Mon, 1 Mar 2021 18:26:51 -0500 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D43CC061788 for ; Mon, 1 Mar 2021 15:26:11 -0800 (PST) Received: by mail-lf1-x12a.google.com with SMTP id 18so19742128lff.6 for ; Mon, 01 Mar 2021 15:26:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=gfgu+pAvfWG6VFJRhvipkkqbx67rCdpP3wQluOyEGj8=; b=wQSEIXHdAbqwiaquPFRTjMmgcsaklFvVednS9YAD58aQu7QkwEJMhNgWpBpU/MWAxi b2BD8ArE0F7ZCd/AFcXfG75FrDCrHY8sMb6vpzr5PtsR15sTOxM4d0C/wS6QBr4hptWM SOelZVr3FdOYci8XSUgz5MZcLfr3MX9XPWuNGmIYtxc5XlG4A8TTR1T6GlI2/V5htVH3 9yZPOPnFghNwRy7AYFrjG1Txp7wXfoQNf4Pkk0SOFqY4WYRAV9Hn2mx9rWJZu4DU74UX PEW4mIQjlTiqirukDWy17I+u+5WSVpn2zlU7tuAhPLS0S2CUBhtPMIWUZpECLe4jUFLb 20aQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=gfgu+pAvfWG6VFJRhvipkkqbx67rCdpP3wQluOyEGj8=; b=Yy4+aMtFlWpe/RLliWTLdvA4rUCUGTWy28n0gnxec2DYOP7znPe3D7dnk5HUfJe6lA iZ1AK4BeCvPDyFpWlz2EzwexM1nYRo+jlZNAzpQbK4Ppdn2u8UzBmMTcKPf6T9zEKIJX vfnC2Ee4kao1n66XIDpTaGdpIMbtFdLXP2rJn72kEr16BPjh0M7yct5EQ1BZGV43YKar 8wTD5kmrHKLxAVkQcPGymAKkx0n14nm9hUgO3uzhp4AWbWVcdMl9kzkd/4viK6BA86ey 8ECRlKa3mCKl+SkNZePRYjCG+KgNiryHI03RtrzvSmaK9Db7iPyMCuIPeAClJDP1xTsy cAWw== X-Gm-Message-State: AOAM5322EsEfc5CDAgtcpoXTwN2hZdA7hu3GxcP3Jdw/iIgtXxtCGmw/ 54zDb9OJuNmDejutLWAhIUT70A== X-Google-Smtp-Source: ABdhPJx6ASBwwcP9kXYkJMtBjyoCs8MQwLCZEi6291t5cVDBPlr2e2TkK3I715Zn3/v1DMoZnlCA5Q== X-Received: by 2002:ac2:4d39:: with SMTP id h25mr7166090lfk.604.1614641169920; Mon, 01 Mar 2021 15:26:09 -0800 (PST) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id b20sm154749lfa.183.2021.03.01.15.26.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Mar 2021 15:26:09 -0800 (PST) From: Dmitry Baryshkov To: Rob Clark , Sean Paul , Jonathan Marek Cc: Stephen Boyd , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [RFC 02/24] drm/msm/dsi: drop multiple pll enable_seq support Date: Tue, 2 Mar 2021 02:24:45 +0300 Message-Id: <20210301232506.3057401-3-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210301232506.3057401-1-dmitry.baryshkov@linaro.org> References: <20210301232506.3057401-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The only PLL using multiple enable sequences is the 28nm PLL, which just does the single step in the loop. Push that support back into the PLL code. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 3 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 23 +++++-- .../gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 3 +- drivers/gpu/drm/msm/dsi/phy/dsi_pll.c | 65 +++++++------------ drivers/gpu/drm/msm/dsi/phy/dsi_pll.h | 4 +- 5 files changed, 42 insertions(+), 56 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c index 4cf289ff8d7e..bd73aa612e76 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c @@ -1087,8 +1087,7 @@ struct msm_dsi_pll *msm_dsi_pll_14nm_init(struct platform_device *pdev, int id) pll_14nm->vco_delay = 1; - pll->en_seq_cnt = 1; - pll->enable_seqs[0] = dsi_pll_14nm_enable_seq; + pll->enable_seq = dsi_pll_14nm_enable_seq; ret = pll_14nm_register(pll_14nm); if (ret) { diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c index b2eac57700ce..e92070633b5f 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c @@ -311,7 +311,7 @@ static const struct clk_ops clk_ops_dsi_pll_28nm_vco = { /* * PLL Callbacks */ -static int dsi_pll_28nm_enable_seq_hpm(struct msm_dsi_pll *pll) +static int _dsi_pll_28nm_enable_seq_hpm(struct msm_dsi_pll *pll) { struct dsi_pll_28nm *pll_28nm = to_pll_28nm(pll); struct device *dev = &pll_28nm->pdev->dev; @@ -386,6 +386,19 @@ static int dsi_pll_28nm_enable_seq_hpm(struct msm_dsi_pll *pll) return locked ? 0 : -EINVAL; } +static int dsi_pll_28nm_enable_seq_hpm(struct msm_dsi_pll *pll) +{ + int i, ret; + + for (i = 0; i < 3; i++) { + ret = _dsi_pll_28nm_enable_seq_hpm(pll); + if (!ret) + return 0; + } + + return ret; +} + static int dsi_pll_28nm_enable_seq_lp(struct msm_dsi_pll *pll) { struct dsi_pll_28nm *pll_28nm = to_pll_28nm(pll); @@ -619,15 +632,11 @@ struct msm_dsi_pll *msm_dsi_pll_28nm_init(struct platform_device *pdev, if (type == MSM_DSI_PHY_28NM_HPM) { pll_28nm->vco_delay = 1; - pll->en_seq_cnt = 3; - pll->enable_seqs[0] = dsi_pll_28nm_enable_seq_hpm; - pll->enable_seqs[1] = dsi_pll_28nm_enable_seq_hpm; - pll->enable_seqs[2] = dsi_pll_28nm_enable_seq_hpm; + pll->enable_seq = dsi_pll_28nm_enable_seq_hpm; } else if (type == MSM_DSI_PHY_28NM_LP) { pll_28nm->vco_delay = 1000; - pll->en_seq_cnt = 1; - pll->enable_seqs[0] = dsi_pll_28nm_enable_seq_lp; + pll->enable_seq = dsi_pll_28nm_enable_seq_lp; } else { DRM_DEV_ERROR(&pdev->dev, "phy type (%d) is not 28nm\n", type); return ERR_PTR(-EINVAL); diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c index 50ed935a5d3e..1b9a5abc9275 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c @@ -515,8 +515,7 @@ struct msm_dsi_pll *msm_dsi_pll_28nm_8960_init(struct platform_device *pdev, pll->save_state = dsi_pll_28nm_save_state; pll->restore_state = dsi_pll_28nm_restore_state; - pll->en_seq_cnt = 1; - pll->enable_seqs[0] = dsi_pll_28nm_enable_seq; + pll->enable_seq = dsi_pll_28nm_enable_seq; ret = pll_28nm_register(pll_28nm); if (ret) { diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c index a45fe95aff49..b409ae2874b4 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c @@ -5,46 +5,6 @@ #include "dsi_pll.h" -static int dsi_pll_enable(struct msm_dsi_pll *pll) -{ - int i, ret = 0; - - /* - * Certain PLLs do not allow VCO rate update when it is on. - * Keep track of their status to turn on/off after set rate success. - */ - if (unlikely(pll->pll_on)) - return 0; - - /* Try all enable sequences until one succeeds */ - for (i = 0; i < pll->en_seq_cnt; i++) { - ret = pll->enable_seqs[i](pll); - DBG("DSI PLL %s after sequence #%d", - ret ? "unlocked" : "locked", i + 1); - if (!ret) - break; - } - - if (ret) { - DRM_ERROR("DSI PLL failed to lock\n"); - return ret; - } - - pll->pll_on = true; - - return 0; -} - -static void dsi_pll_disable(struct msm_dsi_pll *pll) -{ - if (unlikely(!pll->pll_on)) - return; - - pll->disable_seq(pll); - - pll->pll_on = false; -} - /* * DSI PLL Helper functions */ @@ -64,15 +24,36 @@ long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw, int msm_dsi_pll_helper_clk_prepare(struct clk_hw *hw) { struct msm_dsi_pll *pll = hw_clk_to_pll(hw); + int ret = 0; - return dsi_pll_enable(pll); + /* + * Certain PLLs do not allow VCO rate update when it is on. + * Keep track of their status to turn on/off after set rate success. + */ + if (unlikely(pll->pll_on)) + return 0; + + ret = pll->enable_seq(pll); + if (ret) { + DRM_ERROR("DSI PLL failed to lock\n"); + return ret; + } + + pll->pll_on = true; + + return 0; } void msm_dsi_pll_helper_clk_unprepare(struct clk_hw *hw) { struct msm_dsi_pll *pll = hw_clk_to_pll(hw); - dsi_pll_disable(pll); + if (unlikely(!pll->pll_on)) + return; + + pll->disable_seq(pll); + + pll->pll_on = false; } void msm_dsi_pll_helper_unregister_clks(struct platform_device *pdev, diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h index 3405982a092c..3eedb79d8939 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h @@ -12,7 +12,6 @@ #include "dsi.h" #define NUM_DSI_CLOCKS_MAX 6 -#define MAX_DSI_PLL_EN_SEQS 10 struct msm_dsi_pll { enum msm_dsi_phy_type type; @@ -23,9 +22,8 @@ struct msm_dsi_pll { unsigned long min_rate; unsigned long max_rate; - u32 en_seq_cnt; - int (*enable_seqs[MAX_DSI_PLL_EN_SEQS])(struct msm_dsi_pll *pll); + int (*enable_seq)(struct msm_dsi_pll *pll); void (*disable_seq)(struct msm_dsi_pll *pll); int (*get_provider)(struct msm_dsi_pll *pll, struct clk **byte_clk_provider,