From patchwork Wed Mar 24 15:18:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12161461 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 EC1DBC433DB for ; Wed, 24 Mar 2021 15:19:25 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B2CCD619F8 for ; Wed, 24 Mar 2021 15:19:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B2CCD619F8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E7BD96EC71; Wed, 24 Mar 2021 15:19:18 +0000 (UTC) Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4EB8F6EC6E for ; Wed, 24 Mar 2021 15:19:17 +0000 (UTC) Received: by mail-lf1-x131.google.com with SMTP id v15so2359962lfq.5 for ; Wed, 24 Mar 2021 08:19:17 -0700 (PDT) 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=+G6RajVDTexx6T3+eLMEAHUipQEnluOhy+kbnsltVko=; b=rG6mF1kw7DwvEo3ge82WEUpCo3/YQYrxkzIu/d/vWrD6/xqfc54tbh518JH7NukZH8 KordxQoeI1MU7UPM/qhqc813hk0gO1GCCBmgHWUHjWT4SWuCZ88R7zWohro6K8QrCKwp PwSNy0LQtQ8G94ynwfXi5Xd0cyIDgfO1HlivQGLeqlgQSx358uLoILh0T5VRl+vKdDL6 dEWAhSupdiHbgpmSEqsqSMRm38fKgkGqGB7H/RplOO49vvlRyivf6RWaRGm5dFqr+DUr qnZcNps7BEMkXhL5VgWc2NyoWPkX7FZG0mMQAFEXcDO4YMxGoUeWVhm0jg283zmp+h+J FaQw== 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=+G6RajVDTexx6T3+eLMEAHUipQEnluOhy+kbnsltVko=; b=WaNo2ivr0LA4N8JHRL3bgFQGFw7lRMaxfdkjqZzTwwfX2CKA+vzCTDU1+hnmi161MX hY73y3WlhyccyTbI33lK9FCWHxWuiLfPJ/tU1TYJOfUQMxtq00DW2C8FPdKIMgpxgK44 JPhY6rai9WF2EaWynqhsdIUExoPDJfEXvAor/+rt5LEHE/9EyKTVBlErg9YLFJfW9FWd sZ3Y+U6ROW0tHBOuYWL+ZTzprEbEJEelFd88f+dVsL7bE/4zaRj4DK5K3FVRioanDktl TvY1j7Ae151VukbV/ULwKTWWjzwOf/0X70e8S0GOsSxYq8Sq0XOtgHmtZPyqCX1qUOGV pw5w== X-Gm-Message-State: AOAM5328oUivUK4YIlNZfaOwddUYf2Qc4i7IjvM4H24xNAS3PojL4Cw1 ZlxDcJg3aMDqkeDmI3LR5MRN3g== X-Google-Smtp-Source: ABdhPJzBoelMtrVQqw/rpTJkSNi4aQwxGhbxsuouDF2xrXjUisu8T3n1yy/C1moizfLPQMQ7ZgOcDA== X-Received: by 2002:a05:6512:1108:: with SMTP id l8mr2343371lfg.592.1616599155725; Wed, 24 Mar 2021 08:19:15 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id d22sm255199lfm.267.2021.03.24.08.19.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Mar 2021 08:19:15 -0700 (PDT) From: Dmitry Baryshkov To: Rob Clark , Sean Paul , Jonathan Marek , Michael Turquette Subject: [PATCH v2 06/28] drm/msm/dsi: drop multiple pll enable_seq support Date: Wed, 24 Mar 2021 18:18:24 +0300 Message-Id: <20210324151846.2774204-7-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210324151846.2774204-1-dmitry.baryshkov@linaro.org> References: <20210324151846.2774204-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, David Airlie , freedreno@lists.freedesktop.org, linux-clk@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 Reviewed-by: Abhinav Kumar --- 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 6a63901da7a4..4386edfa91fe 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 2f502efa4dd5..760cf7956fa2 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 4a40513057e8..2cfb7edf91d8 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 3dc65877fa10..9e9fa90bf504 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 bbecb1de5678..eebf90671eec 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,