From patchwork Wed Jan 17 16:28:02 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 10170073 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 550666055D for ; Wed, 17 Jan 2018 16:43:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4527B27B81 for ; Wed, 17 Jan 2018 16:43:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 39CD82810E; Wed, 17 Jan 2018 16:43:02 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID 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 2DBDB286FB for ; Wed, 17 Jan 2018 16:42:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754450AbeAQQme (ORCPT ); Wed, 17 Jan 2018 11:42:34 -0500 Received: from conuserg-08.nifty.com ([210.131.2.75]:36680 "EHLO conuserg-08.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753793AbeAQQ3d (ORCPT ); Wed, 17 Jan 2018 11:29:33 -0500 Received: from grover.sesame (FL1-125-199-20-195.osk.mesh.ad.jp [125.199.20.195]) (authenticated) by conuserg-08.nifty.com with ESMTP id w0HGSIKm014790; Thu, 18 Jan 2018 01:28:21 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-08.nifty.com w0HGSIKm014790 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1516206501; bh=EbiI0F/b5y6e/wHWRoyBwpGIBwNGuCfFqPD9oTlOBEk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kng9cCH6gishcDPu93HTTrm8L+t5oLgUs4SJkwQ+4A69unLUmQ5P0cXid1TO3BHAM 5jAhtDLHXTvE3NgYeawyIjDyp4WUH0rY2L+E7cY/d+yCnSdzeaxptL5AnUcVIw4vtW NWnD9pYtoHBnu3fZphg9muk3iWtSaTTQWFuxJ7P8o5s94EY+u4IV5rDyReQEsf8zDD DNiMADF+dHI2VTisEENVZYkaArVl9JW5HN0BtRC3q4uzLkrgCdt5e6JSD4aAUpbTKS T9rc3Ce2BPgUV2co/K2IxZRG4GT2bJkXZ3UgPAevAIer4lp0dhtz/BBTV+obcne3tn 2m+ExCCqdqpHw== X-Nifty-SrcIP: [125.199.20.195] From: Masahiro Yamada To: linux-mmc@vger.kernel.org, Wolfram Sang Cc: Ulf Magnusson , Geert Uytterhoeven , Simon Horman , Yoshihiro Shimoda , linux-renesas-soc@vger.kernel.org, Masahiro Yamada , linux-kernel@vger.kernel.org, Ulf Hansson Subject: [PATCH v3 02/16] mmc: tmio: move clk_enable/disable out of tmio_mmc_host_probe() Date: Thu, 18 Jan 2018 01:28:02 +0900 Message-Id: <1516206496-16612-3-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1516206496-16612-1-git-send-email-yamada.masahiro@socionext.com> References: <1516206496-16612-1-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 The clock is enabled in the tmio_mmc_host_probe(). It also prevents drivers from performing platform-specific settings before mmc_add_host() because the register access generally requires a clock. Enable/disable the clock in drivers' probe/remove. Also, I passed tmio_mmc_data to tmio_mmc_host_alloc() because renesas_sdhi_clk_enable() needs it to get the private data from tmio_mmc_host. Signed-off-by: Masahiro Yamada Reviewed-by: Wolfram Sang --- Changes in v3: None Changes in v2: - Newly added drivers/mmc/host/renesas_sdhi_core.c | 13 ++++++++++--- drivers/mmc/host/tmio_mmc.c | 7 +++++-- drivers/mmc/host/tmio_mmc.h | 4 ++-- drivers/mmc/host/tmio_mmc_core.c | 33 +++++++++++++-------------------- 4 files changed, 30 insertions(+), 27 deletions(-) diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index ccdde27..e18a1c5 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -511,7 +511,7 @@ int renesas_sdhi_probe(struct platform_device *pdev, "state_uhs"); } - host = tmio_mmc_host_alloc(pdev); + host = tmio_mmc_host_alloc(pdev, mmc_data); if (IS_ERR(host)) return PTR_ERR(host); @@ -571,10 +571,14 @@ int renesas_sdhi_probe(struct platform_device *pdev, /* All SDHI have SDIO status bits which must be 1 */ mmc_data->flags |= TMIO_MMC_SDIO_STATUS_SETBITS; - ret = tmio_mmc_host_probe(host, mmc_data, dma_ops); - if (ret < 0) + ret = renesas_sdhi_clk_enable(host); + if (ret) goto efree; + ret = tmio_mmc_host_probe(host, dma_ops); + if (ret < 0) + goto edisclk; + /* One Gen2 SDHI incarnation does NOT have a CBSY bit */ if (sd_ctrl_read16(host, CTL_VERSION) == SDHI_VER_GEN2_SDR50) mmc_data->flags &= ~TMIO_MMC_HAVE_CBSY; @@ -635,6 +639,8 @@ int renesas_sdhi_probe(struct platform_device *pdev, eirq: tmio_mmc_host_remove(host); +edisclk: + renesas_sdhi_clk_disable(host); efree: tmio_mmc_host_free(host); @@ -647,6 +653,7 @@ int renesas_sdhi_remove(struct platform_device *pdev) struct tmio_mmc_host *host = platform_get_drvdata(pdev); tmio_mmc_host_remove(host); + renesas_sdhi_clk_disable(host); return 0; } diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index d660816..11b87ce 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -92,7 +92,7 @@ static int tmio_mmc_probe(struct platform_device *pdev) pdata->flags |= TMIO_MMC_HAVE_HIGH_REG; - host = tmio_mmc_host_alloc(pdev); + host = tmio_mmc_host_alloc(pdev, pdata); if (IS_ERR(host)) { ret = PTR_ERR(host); goto cell_disable; @@ -101,7 +101,10 @@ 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; - ret = tmio_mmc_host_probe(host, pdata, NULL); + host->mmc->f_max = pdata->hclk; + host->mmc->f_min = pdata->hclk / 512; + + ret = tmio_mmc_host_probe(host, NULL); if (ret) goto host_free; diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index 27894474..f46d282 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -195,10 +195,10 @@ struct tmio_mmc_host { const struct tmio_mmc_dma_ops *dma_ops; }; -struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev); +struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev, + struct tmio_mmc_data *pdata); void tmio_mmc_host_free(struct tmio_mmc_host *host); int tmio_mmc_host_probe(struct tmio_mmc_host *host, - struct tmio_mmc_data *pdata, const struct tmio_mmc_dma_ops *dma_ops); void tmio_mmc_host_remove(struct tmio_mmc_host *host); void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 5f0f12a..55442ed 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -1145,8 +1145,8 @@ static void tmio_mmc_of_parse(struct platform_device *pdev, pdata->flags |= TMIO_MMC_WRPROTECT_DISABLE; } -struct tmio_mmc_host* -tmio_mmc_host_alloc(struct platform_device *pdev) +struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev, + struct tmio_mmc_data *pdata) { struct tmio_mmc_host *host; struct mmc_host *mmc; @@ -1166,9 +1166,12 @@ tmio_mmc_host_alloc(struct platform_device *pdev) host->ctl = ctl; host->mmc = mmc; host->pdev = pdev; + host->pdata = pdata; host->ops = tmio_mmc_ops; mmc->ops = &host->ops; + platform_set_drvdata(pdev, host); + return host; } EXPORT_SYMBOL_GPL(tmio_mmc_host_alloc); @@ -1180,14 +1183,21 @@ void tmio_mmc_host_free(struct tmio_mmc_host *host) EXPORT_SYMBOL_GPL(tmio_mmc_host_free); int tmio_mmc_host_probe(struct tmio_mmc_host *_host, - struct tmio_mmc_data *pdata, const struct tmio_mmc_dma_ops *dma_ops) { struct platform_device *pdev = _host->pdev; + struct tmio_mmc_data *pdata = _host->pdata; struct mmc_host *mmc = _host->mmc; int ret; u32 irq_mask = TMIO_MASK_CMD; + /* + * Check the sanity of mmc->f_min to prevent tmio_mmc_set_clock() from + * looping forever... + */ + if (mmc->f_min == 0) + return -EINVAL; + tmio_mmc_of_parse(pdev, pdata); if (!(pdata->flags & TMIO_MMC_HAS_IDLE_WAIT)) @@ -1197,9 +1207,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host, if (ret < 0) return ret; - _host->pdata = pdata; - platform_set_drvdata(pdev, _host); - _host->set_pwr = pdata->set_pwr; _host->set_clk_div = pdata->set_clk_div; @@ -1247,18 +1254,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host, if (pdata->flags & TMIO_MMC_MIN_RCAR2) _host->native_hotplug = true; - if (tmio_mmc_clk_enable(_host) < 0) { - mmc->f_max = pdata->hclk; - mmc->f_min = mmc->f_max / 512; - } - - /* - * Check the sanity of mmc->f_min to prevent tmio_mmc_set_clock() from - * looping forever... - */ - if (mmc->f_min == 0) - return -EINVAL; - /* * While using internal tmio hardware logic for card detection, we need * to ensure it stays powered for it to work. @@ -1336,8 +1331,6 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host) pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); - - tmio_mmc_clk_disable(host); } EXPORT_SYMBOL_GPL(tmio_mmc_host_remove);