From patchwork Thu Apr 4 14:35:27 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prasanna NAVARATNA X-Patchwork-Id: 2393171 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id F130F3FD8C for ; Thu, 4 Apr 2013 14:35:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761954Ab3DDOfy (ORCPT ); Thu, 4 Apr 2013 10:35:54 -0400 Received: from plane.gmane.org ([80.91.229.3]:42215 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761952Ab3DDOfx (ORCPT ); Thu, 4 Apr 2013 10:35:53 -0400 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1UNlGx-0005yN-Jj for linux-mmc@vger.kernel.org; Thu, 04 Apr 2013 16:36:15 +0200 Received: from 202.122.18.226 ([202.122.18.226]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 04 Apr 2013 16:36:15 +0200 Received: from prasanna.navaratna by 202.122.18.226 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 04 Apr 2013 16:36:15 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: linux-mmc@vger.kernel.org From: Prasanna NAVARATNA Subject: mmc: core: negotiate ocr during resume Date: Thu, 4 Apr 2013 14:35:27 +0000 (UTC) Lines: 54 Message-ID: Mime-Version: 1.0 X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: sea.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 202.122.18.226 (Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.43 Safari/537.31) Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From f43005e05f1e9d93705ec6b3ab98cfa5215c1896 Mon Sep 17 00:00:00 2001 From: Prasanna NAVARATNA Date: Thu, 4 Apr 2013 19:55:19 +0530 Subject: [PATCH] mmc: core: negotiate ocr during resume Save the card ocr into struct mmc_card when read from sd card and negotiate ocr mask during mmc_sd_init_card with host->ocr & card->ocr. --- drivers/mmc/core/sd.c | 7 +++++++ include/linux/mmc/card.h | 1 + 2 files changed, 8 insertions(+), 0 deletions(-) specific */ diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 9e645e1..8ee27e8 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -910,6 +910,10 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, BUG_ON(!host); WARN_ON(!host->claimed); + /* Negotiate OCR with oldcard->ocr */ + if (oldcard) + ocr &= oldcard->ocr; + err = mmc_sd_get_cid(host, ocr, cid, &rocr); if (err) return err; @@ -1185,6 +1189,9 @@ int mmc_attach_sd(struct mmc_host *host) ocr &= ~MMC_VDD_165_195; } + /* Save the card OCR */ + host->card->ocr = ocr; + host->ocr = mmc_select_voltage(host, ocr); /* diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index f31725b..1bbec2f 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -273,6 +273,7 @@ struct mmc_card { u32 raw_cid[4]; /* raw card CID */ u32 raw_csd[4]; /* raw card CSD */ u32 raw_scr[2]; /* raw card SCR */ + u32 ocr; /* card OCR */ struct mmc_cid cid; /* card identification */ struct mmc_csd csd; /* card specific */ struct mmc_ext_csd ext_csd; /* mmc v4 extended card