From patchwork Wed Jan 11 22:52:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhinav Kumar X-Patchwork-Id: 13097295 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9ABC2C46467 for ; Wed, 11 Jan 2023 22:53:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3161210E82C; Wed, 11 Jan 2023 22:53:19 +0000 (UTC) Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2485A10E825; Wed, 11 Jan 2023 22:53:16 +0000 (UTC) Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30BMdn1l031144; Wed, 11 Jan 2023 22:53:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=JN/B4N8cmVkipSfz8rN0Pwrrp0Q6iMXwc2+8rg/bci4=; b=mPnxofi/+u8Aex19vx6CO216zYYUaXOpCgWilldRSpF+eiXUOuo21Lwozs1oRjLKoGKB te73Z+nK+34dKarXNA8A1LKI/BE5X04zM20e2TkvZm2KtOUsp5krQElUym2YqsqmVa1m DQJZftEkeS6zztiSxPyzfCsb9Vq5RXykkf46GFhs12Oz8d2pyXC7eRyK7dXz2RkyCE6y aUTR9INRlTUIMJrNIbTWey+MCkSoAkj4EP4xSU/QPIwm6go0f9gx8VDRbHQmPFXuinDL qLfZjkiCBw8ETvMkv1DN8Vw/jmYgY95A/eQ5hSlium6eblfmbXW9QjZ26O9yY68omdgh qw== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3n1k9j2ek0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 11 Jan 2023 22:53:12 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 30BMrB1u010104 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 11 Jan 2023 22:53:11 GMT Received: from jesszhan-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Wed, 11 Jan 2023 14:53:11 -0800 From: Abhinav Kumar To: Subject: [PATCH v2 1/2] drm/msm/dsi: add a helper method to compute the dsi byte clk Date: Wed, 11 Jan 2023 14:52:56 -0800 Message-ID: <20230111225257.7510-1-quic_abhinavk@quicinc.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 4Sg1YDHHs0CnYRZKYcUZqYpM02TYvLCY X-Proofpoint-ORIG-GUID: 4Sg1YDHHs0CnYRZKYcUZqYpM02TYvLCY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2023-01-11_10,2023-01-11_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 impostorscore=0 mlxscore=0 malwarescore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 lowpriorityscore=0 bulkscore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301110167 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: Abhinav Kumar , dri-devel@lists.freedesktop.org, swboyd@chromium.org, seanpaul@chromium.org, dmitry.baryshkov@linaro.org, quic_jesszhan@quicinc.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Re-arrange the dsi_calc_pclk method to two helpers, one to compute the DSI byte clk and the other to compute the pclk. This makes the separation of the two clean and also allows clients to compute and use the dsi byte clk separately. changes in v2: - move the assignments to definition lines Signed-off-by: Abhinav Kumar --- drivers/gpu/drm/msm/dsi/dsi.h | 2 ++ drivers/gpu/drm/msm/dsi/dsi_host.c | 21 ++++++++++++++------- 2 files changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 2a96b4fe7839..1a551cc0e889 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -118,6 +118,8 @@ int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host); int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host); void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host); void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host); +unsigned long dsi_byte_clk_get_rate(struct mipi_dsi_host *host, bool is_bonded_dsi, + const struct drm_display_mode *mode); int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size); int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size); void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host); diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index c3cd96de7f7d..c145fd359ed5 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -570,9 +570,8 @@ void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host) clk_disable_unprepare(msm_host->byte_clk); } -static unsigned long dsi_get_pclk_rate(struct msm_dsi_host *msm_host, bool is_bonded_dsi) +static unsigned long dsi_get_pclk_rate(const struct drm_display_mode *mode, bool is_bonded_dsi) { - struct drm_display_mode *mode = msm_host->mode; unsigned long pclk_rate; pclk_rate = mode->clock * 1000; @@ -589,11 +588,13 @@ static unsigned long dsi_get_pclk_rate(struct msm_dsi_host *msm_host, bool is_bo return pclk_rate; } -static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_bonded_dsi) +unsigned long dsi_byte_clk_get_rate(struct mipi_dsi_host *host, bool is_bonded_dsi, + const struct drm_display_mode *mode) { + struct msm_dsi_host *msm_host = to_msm_dsi_host(host); u8 lanes = msm_host->lanes; u32 bpp = dsi_get_bpp(msm_host->format); - unsigned long pclk_rate = dsi_get_pclk_rate(msm_host, is_bonded_dsi); + unsigned long pclk_rate = dsi_get_pclk_rate(mode, is_bonded_dsi); u64 pclk_bpp = (u64)pclk_rate * bpp; if (lanes == 0) { @@ -607,8 +608,14 @@ static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_bonded_dsi) else do_div(pclk_bpp, (8 * lanes)); - msm_host->pixel_clk_rate = pclk_rate; - msm_host->byte_clk_rate = pclk_bpp; + return pclk_bpp; +} + +static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_bonded_dsi) +{ + msm_host->pixel_clk_rate = dsi_get_pclk_rate(msm_host->mode, is_bonded_dsi); + msm_host->byte_clk_rate = dsi_byte_clk_get_rate(&msm_host->base, is_bonded_dsi, + msm_host->mode); DBG("pclk=%lu, bclk=%lu", msm_host->pixel_clk_rate, msm_host->byte_clk_rate); @@ -636,7 +643,7 @@ int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi) dsi_calc_pclk(msm_host, is_bonded_dsi); - pclk_bpp = (u64)dsi_get_pclk_rate(msm_host, is_bonded_dsi) * bpp; + pclk_bpp = (u64)dsi_get_pclk_rate(msm_host->mode, is_bonded_dsi) * bpp; do_div(pclk_bpp, 8); msm_host->src_clk_rate = pclk_bpp;