From patchwork Thu Jul 22 02:50:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhinav Kumar X-Patchwork-Id: 12392829 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 ED722C6377C for ; Thu, 22 Jul 2021 02:50:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D251F6127C for ; Thu, 22 Jul 2021 02:50:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230093AbhGVCKV (ORCPT ); Wed, 21 Jul 2021 22:10:21 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:43116 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230503AbhGVCKU (ORCPT ); Wed, 21 Jul 2021 22:10:20 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1626922256; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=Y+/wkHthXmZDLajwAWsHJiH7R9xdjpqHvT4l4LMLXIA=; b=nYWErK1RxnQ6dTPdgsllAOwPINpf8yYB2ZTYdJ45QPzi5Qq8X84rTWzW8A+1SP2fPwH4iZ4/ wd/we/ZYff52/Vq+f1cLE8qTdfpmEaX17XOYcxMhP2o33/blq8ubfOnPoGdMAK9D0MWgOkW0 B/+2Vile0AR8/J6InvYGFpdQkA8= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-east-1.postgun.com with SMTP id 60f8dd0fb653fbdadd9d9aa4 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 22 Jul 2021 02:50:55 GMT Sender: abhinavk=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 612B0C4338A; Thu, 22 Jul 2021 02:50:54 +0000 (UTC) Received: from abhinavk-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: abhinavk) by smtp.codeaurora.org (Postfix) with ESMTPSA id D29CFC43460; Thu, 22 Jul 2021 02:50:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D29CFC43460 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=abhinavk@codeaurora.org From: Abhinav Kumar To: dri-devel@lists.freedesktop.org Cc: Abhinav Kumar , linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, robdclark@gmail.com, seanpaul@chromium.org, swboyd@chromium.org, nganji@codeaurora.org, aravindh@codeaurora.org, khsieh@codeaurora.org, dmitry.baryshkov@linaro.org, marijn.suijten@somainline.org Subject: [PATCH v2 2/2] drm/msm/dsi: add support for dsi test pattern generator Date: Wed, 21 Jul 2021 19:50:32 -0700 Message-Id: <1626922232-29105-2-git-send-email-abhinavk@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1626922232-29105-1-git-send-email-abhinavk@codeaurora.org> References: <1626922232-29105-1-git-send-email-abhinavk@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org During board bringups its useful to have a DSI test pattern generator to isolate a DPU vs a DSI issue and focus on the relevant hardware block. To facilitate this, add an API which triggers the DSI controller test pattern. The expected output is a rectangular checkered pattern. This has been validated on a single DSI video mode panel by calling it right after drm_panel_enable() which is also the ideal location to use this as the DSI host and the panel have been initialized by then. Further validation on dual DSI and command mode panel is pending. If there are any fix ups needed for those, it shall be applied on top of this change. Changes in v2: - generate the new dsi.xml.h and update the bitfield names Signed-off-by: Abhinav Kumar Reviewed-by: Stephen Boyd Reviewed-by: Marijn Suijten --- drivers/gpu/drm/msm/dsi/dsi.h | 3 ++ drivers/gpu/drm/msm/dsi/dsi_host.c | 61 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/msm/dsi/dsi_manager.c | 13 ++++++++ 3 files changed, 77 insertions(+) diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 9b8e9b0..663ccbd 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -84,6 +84,7 @@ void msm_dsi_manager_setup_encoder(int id); int msm_dsi_manager_register(struct msm_dsi *msm_dsi); void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); bool msm_dsi_manager_validate_current_config(u8 id); +void msm_dsi_manager_tpg_enable(void); /* msm dsi */ static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) @@ -148,6 +149,8 @@ int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host); int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi); int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi); void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host); +void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host); + /* dsi phy */ struct msm_dsi_phy; struct msm_dsi_phy_shared_timings { diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index ed504fe..e0a3581 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -2495,3 +2495,64 @@ void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_ho pm_runtime_put_sync(&msm_host->pdev->dev); } + +static void msm_dsi_host_video_test_pattern_setup(struct msm_dsi_host *msm_host) +{ + u32 reg; + + reg = dsi_read(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL); + + dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_VIDEO_INIT_VAL, 0xff); + /* draw checkered rectangle pattern */ + dsi_write(msm_host, REG_DSI_TPG_MAIN_CONTROL, + DSI_TPG_MAIN_CONTROL_CHECKERED_RECTANGLE_PATTERN); + /* use 24-bit RGB test pttern */ + dsi_write(msm_host, REG_DSI_TPG_VIDEO_CONFIG, + DSI_TPG_VIDEO_CONFIG_BPP(VIDEO_CONFIG_24BPP) | + DSI_TPG_VIDEO_CONFIG_RGB); + + reg |= DSI_TEST_PATTERN_GEN_CTRL_VIDEO_PATTERN_SEL(VID_MDSS_GENERAL_PATTERN); + dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL, reg); + + DBG("Video test pattern setup done\n"); +} + +static void msm_dsi_host_cmd_test_pattern_setup(struct msm_dsi_host *msm_host) +{ + u32 reg; + + reg = dsi_read(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL); + + /* initial value for test pattern */ + dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CMD_MDP_INIT_VAL0, 0xff); + + reg |= DSI_TEST_PATTERN_GEN_CTRL_CMD_MDP_STREAM0_PATTERN_SEL(CMD_MDP_MDSS_GENERAL_PATTERN); + + dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL, reg); + /* draw checkered rectangle pattern */ + dsi_write(msm_host, REG_DSI_TPG_MAIN_CONTROL2, + DSI_TPG_MAIN_CONTROL2_CMD_MDP0_CHECKERED_RECTANGLE_PATTERN); + + DBG("Cmd test pattern setup done\n"); +} + +void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host) +{ + struct msm_dsi_host *msm_host = to_msm_dsi_host(host); + bool is_video_mode = !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO); + u32 reg; + + if (is_video_mode) + msm_dsi_host_video_test_pattern_setup(msm_host); + else + msm_dsi_host_cmd_test_pattern_setup(msm_host); + + reg = dsi_read(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL); + /* enable the test pattern generator */ + dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL, (reg | DSI_TEST_PATTERN_GEN_CTRL_EN)); + + /* for command mode need to trigger one frame from tpg */ + if (!is_video_mode) + dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CMD_STREAM0_TRIGGER, + DSI_TEST_PATTERN_GEN_CMD_STREAM0_TRIGGER_SW_TRIGGER); +} diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 4ebfedc..db80de6 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -441,6 +441,19 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) return; } +void msm_dsi_manager_tpg_enable(void) +{ + struct msm_dsi *m_dsi = dsi_mgr_get_dsi(DSI_0); + struct msm_dsi *s_dsi = dsi_mgr_get_dsi(DSI_1); + + /* if dual dsi, trigger tpg on master first then slave */ + if (m_dsi) { + msm_dsi_host_test_pattern_en(m_dsi->host); + if (IS_DUAL_DSI() && s_dsi) + msm_dsi_host_test_pattern_en(s_dsi->host); + } +} + static void dsi_mgr_bridge_enable(struct drm_bridge *bridge) { int id = dsi_mgr_bridge_get_id(bridge);