From patchwork Mon Jul 9 17:31:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Paul X-Patchwork-Id: 10515343 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B3FD26032A for ; Mon, 9 Jul 2018 17:33:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B61128DC4 for ; Mon, 9 Jul 2018 17:33:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8FB8628DDB; Mon, 9 Jul 2018 17:33:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BDF9C28DC4 for ; Mon, 9 Jul 2018 17:33:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933617AbeGIRdN (ORCPT ); Mon, 9 Jul 2018 13:33:13 -0400 Received: from mail-yb0-f193.google.com ([209.85.213.193]:34057 "EHLO mail-yb0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933558AbeGIRdM (ORCPT ); Mon, 9 Jul 2018 13:33:12 -0400 Received: by mail-yb0-f193.google.com with SMTP id e9-v6so7499686ybq.1 for ; Mon, 09 Jul 2018 10:33:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=ybqabFcjEl7O34ojAQhqsjwQ3SEdEy4r+h0HSZDl56o=; b=fr1wmUR9XqLxKp3snjZIJYwGOvsZ2bO7CDteEyT7IRyw+Q/FvJxXCqhfo3xOddA/+d N4NjubFnnsDXBXqWejGikVFJuaUXNGy90MmNmyCPPgoXGraVByLNBaXDiIaZkxZRD9VS hhr03fGMTToWEeVrXvgVI/bu25DDduGzuHwQ8= 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; bh=ybqabFcjEl7O34ojAQhqsjwQ3SEdEy4r+h0HSZDl56o=; b=mNNIlYSGXpuOo1YCvCG9t1A0ro93BSukCawa8IyyXDVmtNeeE03p7X+Qb+z0KSE8ga cac7CVvz7INbS+cNRgGKr5VzFk6GSJ35PBCyL72ItRbXZQqGb4jU9gXb1B5gwYcbtOyP zbLekXIG5TiICA/PwzOSQr3RX7/2V7R/6RwZ1Cn26zJiMvrXOUYKlRrgQlVxET4UloPB KA1AOzox2COBkO7CovgZL77nOV9ZhCrGs7SVdkwhL9fsRaZLr2APt8XKUYFqrenQa40F 1Iwhq81+IQVxWu4QL8EdpC6ZDr4/6cEWbI4BJw0YDz+rsCcZ84OuhtYv99trn/kvO2Q3 d+Cg== X-Gm-Message-State: APt69E0pPdCcIchG7tuL43HC9EshBmHhJkMoJ5Wga0H2XytNBQN8+Eiy r/Q5kwYd0+sz12YdNpMI6GashA== X-Google-Smtp-Source: AAOMgpeA9cf81vt8bJPbnyyh9sDltTIIwMY6pYXVxak3u5/CQSbBKZUDBR25NL0h8xj/T6n726erBg== X-Received: by 2002:a25:8b04:: with SMTP id i4-v6mr11231190ybl.12.1531157591924; Mon, 09 Jul 2018 10:33:11 -0700 (PDT) Received: from rosewood.cam.corp.google.com ([2620:0:1013:11:ad55:b1db:adfe:3b9f]) by smtp.gmail.com with ESMTPSA id s206-v6sm5885495ywc.55.2018.07.09.10.33.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 09 Jul 2018 10:33:11 -0700 (PDT) From: Sean Paul To: abhinavk@codeaurora.org, architt@codeaurora.org, chandanu@codeaurora.org, jsanka@codeaurora.org, jcrouse@codeaurora.org, ryadav@codeaurora.org, seanpaul@chromium.org, skolluku@codeaurora.org, dri-devel@lists.freedesktop.org, robdclark@gmail.com, airlied@linux.ie, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, nganji@codeaurora.org, hoegsberg@chromium.org, dovizu@chromium.org, robh+dt@kernel.org Cc: Stefan Agner , Daniel Mack , Neil Armstrong , Lloyd Atkinson , Daniel Vetter Subject: [PATCH 05/21] drm/msm/dsi: adjust dsi timing for dual dsi mode Date: Mon, 9 Jul 2018 13:31:41 -0400 Message-Id: <20180709173200.238457-6-seanpaul@chromium.org> X-Mailer: git-send-email 2.18.0.203.gfac676dfb9-goog In-Reply-To: <20180709173200.238457-1-seanpaul@chromium.org> References: <20180709173200.238457-1-seanpaul@chromium.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Chandan Uddaraju For dual dsi mode, the horizontal timing needs to be divided by half since both the dsi controllers will be driving this panel. Adjust the pixel clock and DSI timing accordingly. Changes in V2: --Removed Change-Id from the commit text tags. Changes in V3: --Instead of adjusting the DRM mode structure, divide the clocks and horizontal timings in DSI host just before configuring the values. Signed-off-by: Chandan Uddaraju Signed-off-by: Sean Paul Reviewed-by: Archit Taneja --- drivers/gpu/drm/msm/dsi/dsi.h | 6 ++- drivers/gpu/drm/msm/dsi/dsi_host.c | 55 +++++++++++++++++++++------ drivers/gpu/drm/msm/dsi/dsi_manager.c | 7 ++-- 3 files changed, 52 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 70d9a9a47acd..01c38f67d699 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -162,7 +162,8 @@ void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 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); + struct msm_dsi_phy_shared_timings *phy_shared_timings, + bool is_dual_dsi); int msm_dsi_host_power_off(struct mipi_dsi_host *host); int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, struct drm_display_mode *mode); @@ -175,7 +176,8 @@ int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, struct msm_dsi_pll *src_pll); void msm_dsi_host_reset_phy(struct mipi_dsi_host *host); void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host, - struct msm_dsi_phy_clk_request *clk_req); + struct msm_dsi_phy_clk_request *clk_req, + bool is_dual_dsi); void msm_dsi_host_destroy(struct mipi_dsi_host *host); int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, struct drm_device *dev); diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 2f1a2780658a..671039b7b75b 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -118,6 +118,7 @@ struct msm_dsi_host { struct clk *byte_intf_clk; u32 byte_clk_rate; + u32 pixel_clk_rate; u32 esc_clk_rate; /* DSI v2 specific clocks */ @@ -511,7 +512,7 @@ static int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host) goto error; } - ret = clk_set_rate(msm_host->pixel_clk, msm_host->mode->clock * 1000); + ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate); if (ret) { pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret); goto error; @@ -592,7 +593,7 @@ static int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host) goto error; } - ret = clk_set_rate(msm_host->pixel_clk, msm_host->mode->clock * 1000); + ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate); if (ret) { pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret); goto error; @@ -662,7 +663,7 @@ static void dsi_link_clk_disable(struct msm_dsi_host *msm_host) } } -static int dsi_calc_clk_rate(struct msm_dsi_host *msm_host) +static int dsi_calc_clk_rate(struct msm_dsi_host *msm_host, bool is_dual_dsi) { struct drm_display_mode *mode = msm_host->mode; const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; @@ -676,14 +677,28 @@ static int dsi_calc_clk_rate(struct msm_dsi_host *msm_host) } pclk_rate = mode->clock * 1000; + + /* + * For dual DSI mode, the current DRM mode has + * the complete width of the panel. Since, the complete + * panel is driven by two DSI controllers, the + * the clock rates have to be split between + * the two dsi controllers. Adjust the byte and + * pixel clock rates for each dsi host accordingly. + */ + if (is_dual_dsi) + pclk_rate /= 2; + if (lanes > 0) { msm_host->byte_clk_rate = (pclk_rate * bpp) / (8 * lanes); } else { pr_err("%s: forcing mdss_dsi lanes to 1\n", __func__); msm_host->byte_clk_rate = (pclk_rate * bpp) / 8; } + msm_host->pixel_clk_rate = pclk_rate; - DBG("pclk=%d, bclk=%d", pclk_rate, msm_host->byte_clk_rate); + DBG("pclk=%d, bclk=%d", msm_host->pixel_clk_rate, + msm_host->byte_clk_rate); msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk); @@ -885,7 +900,7 @@ static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable, dsi_write(msm_host, REG_DSI_CTRL, data); } -static void dsi_timing_setup(struct msm_dsi_host *msm_host) +static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_dual_dsi) { struct drm_display_mode *mode = msm_host->mode; u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */ @@ -897,10 +912,26 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host) u32 ha_end = ha_start + mode->hdisplay; u32 va_start = v_total - mode->vsync_start; u32 va_end = va_start + mode->vdisplay; + u32 hdisplay = mode->hdisplay; u32 wc; DBG(""); + /* + * For dual DSI mode, the current DRM mode has + * the complete width of the panel. Since, the complete + * panel is driven by two DSI controllers, the horizontal + * timings have to be split between the two dsi controllers. + * Adjust the DSI host timing values accordingly. + */ + if (is_dual_dsi) { + h_total /= 2; + hs_end /= 2; + ha_start /= 2; + ha_end /= 2; + hdisplay /= 2; + } + if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) { dsi_write(msm_host, REG_DSI_ACTIVE_H, DSI_ACTIVE_H_START(ha_start) | @@ -921,7 +952,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host) DSI_ACTIVE_VSYNC_VPOS_END(vs_end)); } else { /* command mode */ /* image data and 1 byte write_memory_start cmd */ - wc = mode->hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1; + wc = hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1; dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_CTRL, DSI_CMD_MDP_STREAM_CTRL_WORD_COUNT(wc) | @@ -931,7 +962,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host) MIPI_DSI_DCS_LONG_WRITE)); dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_TOTAL, - DSI_CMD_MDP_STREAM_TOTAL_H_TOTAL(mode->hdisplay) | + DSI_CMD_MDP_STREAM_TOTAL_H_TOTAL(hdisplay) | DSI_CMD_MDP_STREAM_TOTAL_V_TOTAL(mode->vdisplay)); } } @@ -2189,12 +2220,13 @@ void msm_dsi_host_reset_phy(struct mipi_dsi_host *host) } void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host, - struct msm_dsi_phy_clk_request *clk_req) + struct msm_dsi_phy_clk_request *clk_req, + bool is_dual_dsi) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); int ret; - ret = dsi_calc_clk_rate(msm_host); + ret = dsi_calc_clk_rate(msm_host, is_dual_dsi); if (ret) { pr_err("%s: unable to calc clk rate, %d\n", __func__, ret); return; @@ -2256,7 +2288,8 @@ 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) + struct msm_dsi_phy_shared_timings *phy_shared_timings, + bool is_dual_dsi) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); int ret = 0; @@ -2291,7 +2324,7 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host, goto fail_disable_clk; } - dsi_timing_setup(msm_host); + dsi_timing_setup(msm_host, is_dual_dsi); dsi_sw_reset(msm_host); dsi_ctrl_config(msm_host, true, phy_shared_timings); diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 4cb1cb68878b..3bb506b44a4b 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -134,8 +134,9 @@ static int enable_phy(struct msm_dsi *msm_dsi, int src_pll_id, { struct msm_dsi_phy_clk_request clk_req; int ret; + bool is_dual_dsi = IS_DUAL_DSI(); - msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req); + msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req, is_dual_dsi); ret = msm_dsi_phy_enable(msm_dsi->phy, src_pll_id, &clk_req); msm_dsi_phy_get_shared_timings(msm_dsi->phy, shared_timings); @@ -458,7 +459,7 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) if (is_dual_dsi && (DSI_1 == id)) return; - ret = msm_dsi_host_power_on(host, &phy_shared_timings[id]); + ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_dual_dsi); if (ret) { pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); goto host_on_fail; @@ -466,7 +467,7 @@ 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]); + &phy_shared_timings[DSI_1], is_dual_dsi); if (ret) { pr_err("%s: power on host1 failed, %d\n", __func__, ret);