From patchwork Tue Dec 17 08:16:27 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aisheng Dong X-Patchwork-Id: 3359601 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 991E99F32E for ; Tue, 17 Dec 2013 08:46:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 60CEA2035E for ; Tue, 17 Dec 2013 08:46:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E8B8202E9 for ; Tue, 17 Dec 2013 08:45:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752350Ab3LQIp6 (ORCPT ); Tue, 17 Dec 2013 03:45:58 -0500 Received: from co1ehsobe006.messaging.microsoft.com ([216.32.180.189]:20606 "EHLO co1outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751118Ab3LQIp6 (ORCPT ); Tue, 17 Dec 2013 03:45:58 -0500 Received: from mail78-co1-R.bigfish.com (10.243.78.227) by CO1EHSOBE017.bigfish.com (10.243.66.80) with Microsoft SMTP Server id 14.1.225.22; Tue, 17 Dec 2013 08:45:57 +0000 Received: from mail78-co1 (localhost [127.0.0.1]) by mail78-co1-R.bigfish.com (Postfix) with ESMTP id 999B9D40415; Tue, 17 Dec 2013 08:45:57 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah1fc6h1082kzz1de098h8275bh1de097hz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h2218h2216h226dh22d0h2327h2336h1155h) Received: from mail78-co1 (localhost.localdomain [127.0.0.1]) by mail78-co1 (MessageSwitch) id 1387269955451351_32467; Tue, 17 Dec 2013 08:45:55 +0000 (UTC) Received: from CO1EHSMHS014.bigfish.com (unknown [10.243.78.246]) by mail78-co1.bigfish.com (Postfix) with ESMTP id 5E9788C0046; Tue, 17 Dec 2013 08:45:55 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO1EHSMHS014.bigfish.com (10.243.66.24) with Microsoft SMTP Server (TLS) id 14.16.227.3; Tue, 17 Dec 2013 08:45:55 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-001.039d.mgd.msft.net (10.84.1.13) with Microsoft SMTP Server (TLS) id 14.3.158.2; Tue, 17 Dec 2013 08:45:54 +0000 Received: from shlinux2.ap.freescale.net (shlinux2.ap.freescale.net [10.192.224.44]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id rBH8jhZ3028555; Tue, 17 Dec 2013 01:45:51 -0700 From: Dong Aisheng To: CC: , , , , , , , , Subject: [PATCH v2 1/5] mmc: sdhci: add platfrom get_max_timeout_count hook Date: Tue, 17 Dec 2013 16:16:27 +0800 Message-ID: <1387268191-19859-2-git-send-email-b29396@freescale.com> X-Mailer: git-send-email 1.7.2.rc3 In-Reply-To: <1387268191-19859-1-git-send-email-b29396@freescale.com> References: <1387268191-19859-1-git-send-email-b29396@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-FOPE-CONNECTOR: Id%0$Dn%FREESCALE.MAIL.ONMICROSOFT.COM$RO%1$TLS%0$FQDN%$TlsDn% Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-6.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY, UNRESOLVED_TEMPLATE autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently the max_discard_to is simply got by (1 << 27) / host->timeout_clk which is assumed to be the maximum timeout value, however, some platforms maximum timeout counter may not be 1 << 27, e.g. i.MX uSDHC is 1 << 28. Thus 1 << 27 may not be correct for such platforms. It is also possible that other platforms may have different problems. To be flexible, we add a get_max_timeout_count hook to get the correct maximum timeout value for these platforms. Signed-off-by: Dong Aisheng --- drivers/mmc/host/sdhci.c | 4 +++- drivers/mmc/host/sdhci.h | 1 + 2 files changed, 4 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index cc00bed..7fef3bb 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2942,7 +2942,9 @@ int sdhci_add_host(struct sdhci_host *host) if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) host->timeout_clk = mmc->f_max / 1000; - mmc->max_discard_to = (1 << 27) / host->timeout_clk; + mmc->max_discard_to = host->ops->get_max_timeout_count ? + host->ops->get_max_timeout_count(host) : 1 << 27; + mmc->max_discard_to /= host->timeout_clk; mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0a3ed01..acba9a7 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -281,6 +281,7 @@ struct sdhci_ops { unsigned int (*get_max_clock)(struct sdhci_host *host); unsigned int (*get_min_clock)(struct sdhci_host *host); unsigned int (*get_timeout_clock)(struct sdhci_host *host); + unsigned int (*get_max_timeout_count)(struct sdhci_host *host); int (*platform_bus_width)(struct sdhci_host *host, int width); void (*platform_send_init_74_clocks)(struct sdhci_host *host,