From patchwork Wed Oct 3 11:36:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 10624665 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AF6EB15A6 for ; Wed, 3 Oct 2018 11:37:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A29C528765 for ; Wed, 3 Oct 2018 11:37:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 96A3B2881A; Wed, 3 Oct 2018 11:37:37 +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=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable 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 2819228765 for ; Wed, 3 Oct 2018 11:37:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727444AbeJCSZ0 (ORCPT ); Wed, 3 Oct 2018 14:25:26 -0400 Received: from conuserg-09.nifty.com ([210.131.2.76]:27453 "EHLO conuserg-09.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726819AbeJCSZZ (ORCPT ); Wed, 3 Oct 2018 14:25:25 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-09.nifty.com with ESMTP id w93BaXuR004652; Wed, 3 Oct 2018 20:36:35 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-09.nifty.com w93BaXuR004652 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1538566595; bh=3xT6ayLsUJs6m+vBGK/6yogwPyPjq131/KnWwukGn8o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iHi/zBBfxTuh9TJFsQVhBjkxU4sQIS+HFwnScrXUxJkQyN4nW/8vFCpLhFkwpKCuq 0c0EarXNPPAK8rhaNkyVfTrg0wCwfu7ODqr7zi8ra0RW/81YV0/N7yVr5CPzURPaks ON2coe1DvigWK4qyEQyZ/9usVkcuEMIKx2T7w3SAMu+VlWj0pW8maBay0uoe+4YP3v f0SXKym/0aM13GtYjdsCrBOXApHzdTkgu9OEFJ7Ggtc8tHeVKKvVnrkHhAHy9yi35J Rn12ekZ5WP/DpBzsaA26Lyw3M4QUw5N8mgHWUoyLAQBxDZuAZ9YRSozTOTo9d6lyjX l/YVH4dPustPg== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: Wolfram Sang , linux-mmc@vger.kernel.org Cc: Ulf Hansson , linux-renesas-soc@vger.kernel.org, Masahiro Yamada , linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] mmc: tmio: move MFD variant reset to a platform hook Date: Wed, 3 Oct 2018 20:36:26 +0900 Message-Id: <1538566587-29452-2-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1538566587-29452-1-git-send-email-yamada.masahiro@socionext.com> References: <1538566587-29452-1-git-send-email-yamada.masahiro@socionext.com> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP CTL_RESET_SDIO register is specific to the TMIO MFD (tmio_mmc.c). Add a new hook host->reset for performing a platform-specific reset sequence, and move CTL_RESET_SDIO over there. Signed-off-by: Masahiro Yamada --- Changes in v2: - Preserve the current sequence for tmio_mmc.c drivers/mmc/host/tmio_mmc.c | 17 +++++++++++++++++ drivers/mmc/host/tmio_mmc.h | 1 + drivers/mmc/host/tmio_mmc_core.c | 8 +++----- 3 files changed, 21 insertions(+), 5 deletions(-) diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index e04c322..00d291c 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -78,6 +78,22 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, tmio_mmc_clk_start(host); } +static void tmio_mmc_reset(struct tmio_mmc_host *host) +{ + /* FIXME - should we set stop clock reg here */ + sd_ctrl_write16(host, CTL_RESET_SD, 0x0000); + sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0000); + usleep_range(10000, 11000); + sd_ctrl_write16(host, CTL_RESET_SD, 0x0001); + sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0001); + usleep_range(10000, 11000); + + if (host->pdata->flags & TMIO_MMC_SDIO_IRQ) { + sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask); + sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001); + } +} + #ifdef CONFIG_PM_SLEEP static int tmio_mmc_suspend(struct device *dev) { @@ -156,6 +172,7 @@ static int tmio_mmc_probe(struct platform_device *pdev) /* SD control register space size is 0x200, 0x400 for bus_shift=1 */ host->bus_shift = resource_size(res) >> 10; host->set_clock = tmio_mmc_set_clock; + host->reset = tmio_mmc_reset; host->mmc->f_max = pdata->hclk; host->mmc->f_min = pdata->hclk / 512; diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index e6aa13a..a1a661b 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -176,6 +176,7 @@ struct tmio_mmc_host { int (*multi_io_quirk)(struct mmc_card *card, unsigned int direction, int blk_size); int (*write16_hook)(struct tmio_mmc_host *host, int addr); + void (*reset)(struct tmio_mmc_host *host); void (*hw_reset)(struct tmio_mmc_host *host); void (*prepare_tuning)(struct tmio_mmc_host *host, unsigned long tap); bool (*check_scc_error)(struct tmio_mmc_host *host); diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 0611824..9bcc760 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -164,19 +164,14 @@ static void tmio_mmc_reset(struct tmio_mmc_host *host) { /* FIXME - should we set stop clock reg here */ sd_ctrl_write16(host, CTL_RESET_SD, 0x0000); - if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) - sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0000); usleep_range(10000, 11000); sd_ctrl_write16(host, CTL_RESET_SD, 0x0001); - if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) - sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0001); usleep_range(10000, 11000); if (host->pdata->flags & TMIO_MMC_SDIO_IRQ) { sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask); sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001); } - } static void tmio_mmc_reset_work(struct work_struct *work) @@ -1212,6 +1207,9 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host) mmc->caps & MMC_CAP_NEEDS_POLL || !mmc_card_is_removable(mmc)); + if (!_host->reset) + _host->reset = tmio_mmc_reset; + /* * On Gen2+, eMMC with NONREMOVABLE currently fails because native * hotplug gets disabled. It seems RuntimePM related yet we need further From patchwork Wed Oct 3 11:36:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 10624669 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6E4A718A7 for ; Wed, 3 Oct 2018 11:37:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 631F528765 for ; Wed, 3 Oct 2018 11:37:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5762B28803; Wed, 3 Oct 2018 11:37:41 +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=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable 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 EB1D22881A for ; Wed, 3 Oct 2018 11:37:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727209AbeJCSZX (ORCPT ); Wed, 3 Oct 2018 14:25:23 -0400 Received: from conuserg-09.nifty.com ([210.131.2.76]:27413 "EHLO conuserg-09.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726617AbeJCSZW (ORCPT ); Wed, 3 Oct 2018 14:25:22 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-09.nifty.com with ESMTP id w93BaXuS004652; Wed, 3 Oct 2018 20:36:36 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-09.nifty.com w93BaXuS004652 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1538566596; bh=RjHmEivsPVKnzPq6lcVwiYyNrUvc9S3vSUp+3Yy3BOc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z0d7JSRoj1kLbCZ3/+HZdOTmqPp1EyMZV6/DFUb8Ca8x/TGOHX8mjz4Vo6FwgNzRe BOdzqErmz7sYbrv9PGjkq4TdyrsMYU3jDGg0nbRfZLeAsdtNxagRwRFf4oC2cQ0MVg bUtr+5Nr4EFNDZ8/Dj/ME6t0+LXBaX8oVQ9JCK0haJF6KExjFy3ntCVOvEwP4GFhyd qrIS3QjFy7USQIc24aeADd1IMoDdVRPmjRgVrlUA+26IioPOrVZmS5onLpu9V8JjTQ MvqC0EZWIhfV0DRbca/vh8Ep1loBIf8YmwsunyYj0yT3nLfiOyuPEGN5kOOtcaYOxP zxm/lvd7WcOSA== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: Wolfram Sang , linux-mmc@vger.kernel.org Cc: Ulf Hansson , linux-renesas-soc@vger.kernel.org, Masahiro Yamada , Lee Jones , linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] mmc: tmio: remove TMIO_MMC_HAVE_HIGH_REG flag Date: Wed, 3 Oct 2018 20:36:27 +0900 Message-Id: <1538566587-29452-3-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1538566587-29452-1-git-send-email-yamada.masahiro@socionext.com> References: <1538566587-29452-1-git-send-email-yamada.masahiro@socionext.com> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP TMIO_MMC_HAVE_HIGH_REG is confusing due to its counter-intuitive name. All the TMIO MMC variants (TMIO MMC, Renesas SDHI, UniPhier SD) actually have high registers. It is just that each of them implements its own registers there. The original IP from Panasonic only defines registers 0x00-0xff in the bus_shift=1 review. The register area above them is platform-dependent. In fact, TMIO_MMC_HAVE_HIGH_REG is set only by tmio-mmc.c and used to test the accessibility of CTL_SDIO_REGS. Because it is specific to the TMIO MFD variant, the right thing to do is to move such registers to tmio_mmc.c and delete the TMIO_MMC_HAVE_HIGH_REG flag. Signed-off-by: Masahiro Yamada --- Changes in v2: None drivers/mmc/host/tmio_mmc.c | 7 +++++-- drivers/mmc/host/tmio_mmc.h | 3 --- include/linux/mfd/tmio.h | 7 ------- 3 files changed, 5 insertions(+), 12 deletions(-) diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index 00d291c..4e91020 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -24,6 +24,11 @@ #include "tmio_mmc.h" +/* Registers specific to this variant */ +#define CTL_SDIO_REGS 0x100 +#define CTL_CLK_AND_WAIT_CTL 0x138 +#define CTL_RESET_SDIO 0x1e0 + static void tmio_mmc_clk_start(struct tmio_mmc_host *host) { sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN | @@ -161,8 +166,6 @@ static int tmio_mmc_probe(struct platform_device *pdev) goto cell_disable; } - pdata->flags |= TMIO_MMC_HAVE_HIGH_REG; - host = tmio_mmc_host_alloc(pdev, pdata); if (IS_ERR(host)) { ret = PTR_ERR(host); diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index a1a661b..18b4308 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -47,9 +47,6 @@ #define CTL_RESET_SD 0xe0 #define CTL_VERSION 0xe2 #define CTL_SDIF_MODE 0xe6 -#define CTL_SDIO_REGS 0x100 -#define CTL_CLK_AND_WAIT_CTL 0x138 -#define CTL_RESET_SDIO 0x1e0 /* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */ #define TMIO_STOP_STP BIT(0) diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index 7786621..1e70060 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -62,13 +62,6 @@ #define TMIO_MMC_USE_GPIO_CD BIT(5) /* - * Some controllers doesn't have over 0x100 register. - * it is used to checking accessibility of - * CTL_SD_CARD_CLK_CTL / CTL_CLK_AND_WAIT_CTL - */ -#define TMIO_MMC_HAVE_HIGH_REG BIT(6) - -/* * Some controllers have CMD12 automatically * issue/non-issue register */