From mboxrd@z Thu Jan 1 00:00:00 1970 From: Loic Pallardy Subject: [PATCH v3 4/5] mmc: core: Add mmc_set_blockcount feature Date: Mon, 6 Aug 2012 17:12:30 +0200 Message-ID: <1344265951-22437-5-git-send-email-loic.pallardy-ext@stericsson.com> References: <1344265951-22437-1-git-send-email-loic.pallardy-ext@stericsson.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from eu1sys200aog115.obsmtp.com ([207.126.144.139]:41878 "EHLO eu1sys200aog115.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932132Ab2HFPNk (ORCPT ); Mon, 6 Aug 2012 11:13:40 -0400 In-Reply-To: <1344265951-22437-1-git-send-email-loic.pallardy-ext@stericsson.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: linux-mmc@vger.kernel.org, Chris Ball Cc: Linus Walleij , STEricsson_nomadik_linux , Ulf Hansson , Loic Pallardy , Alex Macro , Loic Pallardy Provide support for automatically sending Set Block Count (CMD23) messages. Used at least for RPMB support. Signed-off-by: Alex Macro Signed-off-by: Loic Pallardy Acked-by: Linus Walleij Acked-by: Johan Rudholm Reviewed-by: Namjae Jeon --- drivers/mmc/core/core.c | 14 ++++++++++++++ include/linux/mmc/core.h | 2 ++ 2 files changed, 16 insertions(+) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 0b6141d..7990e2c 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1827,6 +1827,20 @@ int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen) } EXPORT_SYMBOL(mmc_set_blocklen); +int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount, + bool is_rel_write) +{ + struct mmc_command cmd = {0}; + + cmd.opcode = MMC_SET_BLOCK_COUNT; + cmd.arg = blockcount & 0x0000FFFF; + if (is_rel_write) + cmd.arg |= 1 << 31; + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; + return mmc_wait_for_cmd(card->host, &cmd, 5); +} +EXPORT_SYMBOL(mmc_set_blockcount); + static void mmc_hw_reset_for_init(struct mmc_host *host) { if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 1b431c7..098b7dd 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -166,6 +166,8 @@ extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, extern unsigned int mmc_calc_max_discard(struct mmc_card *card); extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen); +extern int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount, + bool is_rel_write); extern int mmc_hw_reset(struct mmc_host *host); extern int mmc_hw_reset_check(struct mmc_host *host); extern int mmc_can_reset(struct mmc_card *card); -- 1.7.11.1