From patchwork Thu Nov 7 08:31:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 11232149 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6B14A1390 for ; Thu, 7 Nov 2019 08:36:16 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 531BD21D79 for ; Thu, 7 Nov 2019 08:36:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 531BD21D79 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bp.renesas.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=cip-dev-bounces@lists.cip-project.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id D30F2C97; Thu, 7 Nov 2019 08:34:53 +0000 (UTC) X-Original-To: cip-dev@lists.cip-project.org Delivered-To: cip-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 73746C97 for ; Thu, 7 Nov 2019 08:34:53 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 56B10756 for ; Thu, 7 Nov 2019 08:34:52 +0000 (UTC) X-IronPort-AV: E=Sophos;i="5.68,277,1569250800"; d="scan'208";a="30860847" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 07 Nov 2019 17:34:52 +0900 Received: from be1yocto.ree.adwin.renesas.com (unknown [172.29.43.62]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id A923741E872A; Thu, 7 Nov 2019 17:34:50 +0900 (JST) From: Biju Das To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Pavel Machek Date: Thu, 7 Nov 2019 08:31:55 +0000 Message-Id: <1573115572-13513-27-git-send-email-biju.das@bp.renesas.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1573115572-13513-1-git-send-email-biju.das@bp.renesas.com> References: <1573115572-13513-1-git-send-email-biju.das@bp.renesas.com> X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: Biju Das Subject: [cip-dev] [PATCH 4.4.y-cip 26/83] mmc: tmio/sdhi: introduce flag for RCar 2+ specific features X-BeenThere: cip-dev@lists.cip-project.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: cip-dev-bounces@lists.cip-project.org Errors-To: cip-dev-bounces@lists.cip-project.org From: Wolfram Sang commit 3d376fb2ea907f0c1bbccf87125456439feb4ed4 upstream. RCar Gen2 and later implementations of TMIO/SDHI have their own set of features and additions. FAST_CLK_CHG is just one of them and I see a few others being added soon. Some may work on older chipsets but this needs to be tested case by case. Instead of adding a bunch of flags for each feature, add a global RCar2+ one for now. We can still break out features if the need arises. Signed-off-by: Wolfram Sang Tested-by: Geert Uytterhoeven Signed-off-by: Ulf Hansson Signed-off-by: Biju Das --- drivers/mmc/host/sh_mobile_sdhi.c | 4 ++-- drivers/mmc/host/tmio_mmc_pio.c | 6 +++--- include/linux/mfd/tmio.h | 4 ++-- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 7bb2900..f7317cf 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -64,7 +64,7 @@ static const struct sh_mobile_sdhi_of_data of_rcar_gen1_compatible = { static const struct sh_mobile_sdhi_of_data of_rcar_gen2_compatible = { .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE | - TMIO_MMC_CLK_ACTUAL | TMIO_MMC_FAST_CLK_CHG, + TMIO_MMC_CLK_ACTUAL | TMIO_MMC_MIN_RCAR2, .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, .dma_buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES, .dma_rx_offset = 0x2000, @@ -72,7 +72,7 @@ static const struct sh_mobile_sdhi_of_data of_rcar_gen2_compatible = { static const struct sh_mobile_sdhi_of_data of_rcar_gen3_compatible = { .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE | - TMIO_MMC_CLK_ACTUAL | TMIO_MMC_FAST_CLK_CHG, + TMIO_MMC_CLK_ACTUAL | TMIO_MMC_MIN_RCAR2, .capabilities = MMC_CAP_SD_HIGHSPEED, .bus_shift = 2, }; diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index dbad002..b14672d 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -157,7 +157,7 @@ static void tmio_mmc_clk_start(struct tmio_mmc_host *host) { sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN | sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL)); - msleep(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG ? 1 : 10); + msleep(host->pdata->flags & TMIO_MMC_MIN_RCAR2 ? 1 : 10); if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) { sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100); @@ -174,7 +174,7 @@ static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN & sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL)); - msleep(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG ? 5 : 10); + msleep(host->pdata->flags & TMIO_MMC_MIN_RCAR2 ? 5 : 10); } static void tmio_mmc_set_clock(struct tmio_mmc_host *host, @@ -205,7 +205,7 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN & sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL)); sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & CLK_CTL_DIV_MASK); - if (!(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG)) + if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2)) msleep(10); tmio_mmc_clk_start(host); diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index 05d58ee..7a26286 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -66,8 +66,8 @@ */ #define TMIO_MMC_SDIO_IRQ (1 << 2) -/* Some controllers don't need to wait 10ms for clock changes */ -#define TMIO_MMC_FAST_CLK_CHG (1 << 3) +/* Some features are only available or tested on RCar Gen2 or later */ +#define TMIO_MMC_MIN_RCAR2 (1 << 3) /* * Some controllers require waiting for the SD bus to become