From patchwork Thu Aug 5 17:08:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12421711 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=-18.8 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,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 221A3C4320E for ; Thu, 5 Aug 2021 17:08:22 +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 BB9A56112F for ; Thu, 5 Aug 2021 17:08:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org BB9A56112F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 34D5B6EB18; Thu, 5 Aug 2021 17:08:21 +0000 (UTC) Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by gabe.freedesktop.org (Postfix) with ESMTPS id C80816EB14 for ; Thu, 5 Aug 2021 17:08:19 +0000 (UTC) Received: by mail-lf1-x12f.google.com with SMTP id p38so12580190lfa.0 for ; Thu, 05 Aug 2021 10:08:19 -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:mime-version :content-transfer-encoding; bh=u5iij8rID6SAk24Gs2UckGpZrRbqv5ALWYEAvBtS4mY=; b=HihlEB7QQCsFTB7m+r/iDAPKeJlly9uHAUNgUoNvFpkED6Sq13q3A39T6yGWWvyIRM dHl1lYp/dNL8tb/8x4AWFOcv8iz6BEvrNoR64kXCnCZLIMTyTq+PkC7iYjUFeALvzr6o lDvDD/6cEGkrzj64tBO8X+WosK1kMz7JfhNZucPvOqktE+lxFMshAFEqUPl5v6ZXWzxS o5XKKsmeSZLNvtyI39w8UpqAPOY3t96adfVB1G0BAhsVJcZe1vrjSi9TKLzKhrkQFcll YI6EUT38/GEpLaFDHpYR1+dPktXbqWlLFdXfcaIkMu8Lt+YeoDlTbwYyUi1Yw9/IUzPV zudg== 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:mime-version :content-transfer-encoding; bh=u5iij8rID6SAk24Gs2UckGpZrRbqv5ALWYEAvBtS4mY=; b=UfIpCo3HwXGQZDJWwHD9YrPzxxbGnor1cTPZ0PwWzhG8tClq8umIyngUs06HiYqvF5 oTU5AjmgYBCE1Iqj4LxhllBOpW8NbmxJ6Ov8OG+OfhnwqFgOlYmfINXoLEytSNqkaoJr P1w41He806hQRYDrBedlLGxaoKk5Mvf16NxTlS2gWxwrEeHARB++xZVfUmEFBwUGlTc6 GXlpblwwyusdbBEj6nFqWmXWYI52bZWSzFFjbQL4tHU9f3ZBwtEwZiqVgMtHzKWRD0py +ZeAn3BtaeguxhmRUZX3PACjVGmvaXVRxAKz/b7IrQFwIJuNBySoVw6xtXzebz+7NdBp u/TA== X-Gm-Message-State: AOAM532jdEghfko4w+Kub9McWZfwBXraFwHD15HlEIJPaiiNGSM80Ale rWjljz6qpS+vQ7h8NTdyamrJ3w== X-Google-Smtp-Source: ABdhPJx+iKXMxN1ZaUHnr/vBFWgK62YDFCoxXE2ugla5zcpEvl/+wWZVyK8vcLL/S3SfYk6G/g+yAw== X-Received: by 2002:a19:e00a:: with SMTP id x10mr4679538lfg.536.1628183298064; Thu, 05 Aug 2021 10:08:18 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id v19sm568935lfg.134.2021.08.05.10.08.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Aug 2021 10:08:17 -0700 (PDT) From: Dmitry Baryshkov To: Bjorn Andersson , Rob Clark , Sean Paul , Abhinav Kumar Cc: Jonathan Marek , Stephen Boyd , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [PATCH v5] drm/msm/dsi: add continuous clock support for 7nm PHY Date: Thu, 5 Aug 2021 20:08:17 +0300 Message-Id: <20210805170817.3337665-1-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.30.2 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Unlike previous generations, 7nm PHYs are required to collaborate with the host for conitnuos clock mode. Add changes neccessary to enable continuous clock mode in the 7nm DSI PHYs. Signed-off-by: Dmitry Baryshkov --- Changes since v4: - Fix the comment regarding msm_dsi_phy_set_continuous_clock() Changes since v3: - Invert the DSI_LANE_CTRL_HS_REQ_SEL_PHY bit logic, as noted by Abhinav. Changes since v2: - Really drop msm_dsi_phy_needs_hs_phy_sel() Changes since v1: - Remove the need for a separate msm_dsi_phy_needs_hs_phy_sel() call - Fix setting continuous clock for a dual DSI case. --- drivers/gpu/drm/msm/dsi/dsi.h | 3 ++- drivers/gpu/drm/msm/dsi/dsi.xml.h | 1 + drivers/gpu/drm/msm/dsi/dsi_host.c | 12 ++++++++---- drivers/gpu/drm/msm/dsi/dsi_manager.c | 4 ++-- drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 9 +++++++++ drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 1 + drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 17 +++++++++++++++++ 7 files changed, 40 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 9b8e9b07eced..58e63bf34fe9 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -109,7 +109,7 @@ int msm_dsi_host_enable(struct mipi_dsi_host *host); int msm_dsi_host_disable(struct mipi_dsi_host *host); int msm_dsi_host_power_on(struct mipi_dsi_host *host, struct msm_dsi_phy_shared_timings *phy_shared_timings, - bool is_dual_dsi); + bool is_dual_dsi, struct msm_dsi_phy *phy); int msm_dsi_host_power_off(struct mipi_dsi_host *host); int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, const struct drm_display_mode *mode); @@ -175,6 +175,7 @@ int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy, void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy); int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy); void msm_dsi_phy_snapshot(struct msm_disp_state *disp_state, struct msm_dsi_phy *phy); +bool msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable); #endif /* __DSI_CONNECTOR_H__ */ diff --git a/drivers/gpu/drm/msm/dsi/dsi.xml.h b/drivers/gpu/drm/msm/dsi/dsi.xml.h index eadbcc78fd72..473c81605054 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.xml.h +++ b/drivers/gpu/drm/msm/dsi/dsi.xml.h @@ -518,6 +518,7 @@ static inline uint32_t DSI_CLKOUT_TIMING_CTRL_T_CLK_POST(uint32_t val) #define DSI_LANE_STATUS_DLN0_DIRECTION 0x00010000 #define REG_DSI_LANE_CTRL 0x000000a8 +#define DSI_LANE_CTRL_HS_REQ_SEL_PHY 0x01000000 #define DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST 0x10000000 #define REG_DSI_LANE_SWAP_CTRL 0x000000ac diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index ed504fe5074f..3558e5cd400f 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -834,7 +834,7 @@ static inline enum dsi_cmd_dst_format dsi_get_cmd_fmt( } static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable, - struct msm_dsi_phy_shared_timings *phy_shared_timings) + struct msm_dsi_phy_shared_timings *phy_shared_timings, struct msm_dsi_phy *phy) { u32 flags = msm_host->mode_flags; enum mipi_dsi_pixel_format mipi_fmt = msm_host->format; @@ -929,6 +929,10 @@ static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable, if (!(flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)) { lane_ctrl = dsi_read(msm_host, REG_DSI_LANE_CTRL); + + if (msm_dsi_phy_set_continuous_clock(phy, enable)) + lane_ctrl &= ~DSI_LANE_CTRL_HS_REQ_SEL_PHY; + dsi_write(msm_host, REG_DSI_LANE_CTRL, lane_ctrl | DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST); } @@ -2354,7 +2358,7 @@ static void msm_dsi_sfpb_config(struct msm_dsi_host *msm_host, bool enable) int msm_dsi_host_power_on(struct mipi_dsi_host *host, struct msm_dsi_phy_shared_timings *phy_shared_timings, - bool is_dual_dsi) + bool is_dual_dsi, struct msm_dsi_phy *phy) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; @@ -2394,7 +2398,7 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host, dsi_timing_setup(msm_host, is_dual_dsi); dsi_sw_reset(msm_host); - dsi_ctrl_config(msm_host, true, phy_shared_timings); + dsi_ctrl_config(msm_host, true, phy_shared_timings, phy); if (msm_host->disp_en_gpio) gpiod_set_value(msm_host->disp_en_gpio, 1); @@ -2425,7 +2429,7 @@ int msm_dsi_host_power_off(struct mipi_dsi_host *host) goto unlock_ret; } - dsi_ctrl_config(msm_host, false, NULL); + dsi_ctrl_config(msm_host, false, NULL, NULL); if (msm_host->disp_en_gpio) gpiod_set_value(msm_host->disp_en_gpio, 0); diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 4ebfedc4a9ac..1b89fef8f805 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -381,7 +381,7 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) if (ret) goto phy_en_fail; - ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_dual_dsi); + ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_dual_dsi, msm_dsi->phy); if (ret) { pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); goto host_on_fail; @@ -389,7 +389,7 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) if (is_dual_dsi && msm_dsi1) { ret = msm_dsi_host_power_on(msm_dsi1->host, - &phy_shared_timings[DSI_1], is_dual_dsi); + &phy_shared_timings[DSI_1], is_dual_dsi, msm_dsi1->phy); if (ret) { pr_err("%s: power on host1 failed, %d\n", __func__, ret); diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index 6ca6bfd4809b..723d2eeafa69 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -835,6 +835,15 @@ void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy, phy->usecase = uc; } +/* Returns true if we have to clear DSI_LANE_CTRL.HS_REQ_SEL_PHY */ +bool msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable) +{ + if (!phy || !phy->cfg->ops.set_continuous_clock) + return false; + + return phy->cfg->ops.set_continuous_clock(phy, enable); +} + int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy, struct clk **byte_clk_provider, struct clk **pixel_clk_provider) { diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h index 5b0feef87127..43dee28450b4 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h @@ -24,6 +24,7 @@ struct msm_dsi_phy_ops { void (*disable)(struct msm_dsi_phy *phy); void (*save_pll_state)(struct msm_dsi_phy *phy); int (*restore_pll_state)(struct msm_dsi_phy *phy); + bool (*set_continuous_clock)(struct msm_dsi_phy *phy, bool enable); }; struct msm_dsi_phy_cfg { diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c index 7c23d4c47338..a78a0c45d101 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c @@ -932,6 +932,21 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, return 0; } +static bool dsi_7nm_set_continuous_clock(struct msm_dsi_phy *phy, bool enable) +{ + void __iomem *base = phy->base; + u32 data; + + data = dsi_phy_read(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL1); + if (enable) + data |= BIT(5) | BIT(6); + else + data &= ~(BIT(5) | BIT(6)); + dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL1, data); + + return enable; +} + static void dsi_7nm_phy_disable(struct msm_dsi_phy *phy) { void __iomem *base = phy->base; @@ -972,6 +987,7 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs = { .pll_init = dsi_pll_7nm_init, .save_pll_state = dsi_7nm_pll_save_state, .restore_pll_state = dsi_7nm_pll_restore_state, + .set_continuous_clock = dsi_7nm_set_continuous_clock, }, .min_pll_rate = 600000000UL, #ifdef CONFIG_64BIT @@ -998,6 +1014,7 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs = { .pll_init = dsi_pll_7nm_init, .save_pll_state = dsi_7nm_pll_save_state, .restore_pll_state = dsi_7nm_pll_restore_state, + .set_continuous_clock = dsi_7nm_set_continuous_clock, }, .min_pll_rate = 1000000000UL, .max_pll_rate = 3500000000UL,