From patchwork Tue Aug 15 01:40:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wenchao Chen X-Patchwork-Id: 713982 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 249D5C04FE0 for ; Tue, 15 Aug 2023 01:42:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233835AbjHOBmK (ORCPT ); Mon, 14 Aug 2023 21:42:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59672 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233915AbjHOBlw (ORCPT ); Mon, 14 Aug 2023 21:41:52 -0400 Received: from SHSQR01.spreadtrum.com (unknown [222.66.158.135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B67CD1986; Mon, 14 Aug 2023 18:41:48 -0700 (PDT) Received: from dlp.unisoc.com ([10.29.3.86]) by SHSQR01.spreadtrum.com with ESMTP id 37F1fS8M005127; Tue, 15 Aug 2023 09:41:28 +0800 (+08) (envelope-from Wenchao.Chen@unisoc.com) Received: from SHDLP.spreadtrum.com (shmbx05.spreadtrum.com [10.29.1.56]) by dlp.unisoc.com (SkyGuard) with ESMTPS id 4RPv7r2T2Mz2P8CXW; Tue, 15 Aug 2023 09:39:20 +0800 (CST) Received: from xm9614pcu.spreadtrum.com (10.13.2.29) by shmbx05.spreadtrum.com (10.29.1.56) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Tue, 15 Aug 2023 09:41:25 +0800 From: Wenchao Chen To: , CC: , , , , , , Wenchao Chen Subject: [PATCH V2 1/2] mmc: core: Add host specific tuning support for SD HS mode Date: Tue, 15 Aug 2023 09:40:56 +0800 Message-ID: <20230815014057.13589-2-wenchao.chen@unisoc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230815014057.13589-1-wenchao.chen@unisoc.com> References: <20230815014057.13589-1-wenchao.chen@unisoc.com> MIME-Version: 1.0 X-Originating-IP: [10.13.2.29] X-ClientProxiedBy: SHCAS03.spreadtrum.com (10.0.1.207) To shmbx05.spreadtrum.com (10.29.1.56) X-MAIL: SHSQR01.spreadtrum.com 37F1fS8M005127 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Added .prepare_hs_tuning and .execute_hs_tuning host callbacks to support host-specific tuning for SD high speed mode. Signed-off-by: Wenchao Chen --- drivers/mmc/core/sd.c | 12 ++++++++++++ include/linux/mmc/host.h | 6 ++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 246ce027ae0a..ac2da8f2fbce 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -1518,6 +1518,12 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, */ mmc_set_clock(host, mmc_sd_get_max_clock(card)); + if (host->ops->prepare_hs_tuning) { + err = host->ops->prepare_hs_tuning(host, card); + if (err) + goto free_card; + } + /* * Switch to wider bus (if supported). */ @@ -1529,6 +1535,12 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, mmc_set_bus_width(host, MMC_BUS_WIDTH_4); } + + if (host->ops->execute_hs_tuning) { + err = host->ops->execute_hs_tuning(host, card); + if (err) + goto free_card; + } } cont: if (!oldcard) { diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 461d1543893b..13cf894b9e3c 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -184,6 +184,12 @@ struct mmc_host_ops { /* Execute HS400 tuning depending host driver */ int (*execute_hs400_tuning)(struct mmc_host *host, struct mmc_card *card); + /* Prepare HS tuning depending host driver */ + int (*prepare_hs_tuning)(struct mmc_host *host, struct mmc_card *card); + + /* Execute HS tuning depending host driver */ + int (*execute_hs_tuning)(struct mmc_host *host, struct mmc_card *card); + /* Prepare switch to DDR during the HS400 init sequence */ int (*hs400_prepare_ddr)(struct mmc_host *host);