| Message ID | 1344265951-22437-5-git-send-email-loic.pallardy-ext@stericsson.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, 2012-11-16 at 13:17 -0800, Krishna Konda wrote: > > > From: Loic Pallardy <loic.pallardy-ext@stericsson.com> > Date: Mon, Aug 6, 2012 at 8:12 AM > Subject: [PATCH v3 4/5] mmc: core: Add mmc_set_blockcount feature > To: linux-mmc@vger.kernel.org, Chris Ball <cjb@laptop.org> > Cc: Linus Walleij <linus.walleij@linaro.org>, STEricsson_nomadik_linux > <STEricsson_nomadik_linux@list.st.com>, Ulf Hansson > <ulf.hansson@stericcson.com>, Loic Pallardy > <loic.pallardy-ext@stericsson.com>, Alex Macro > <alex.macro@stericsson.com>, Loic Pallardy > <loic.pallardy@stericsson.com> > > > Provide support for automatically sending Set Block Count > (CMD23) messages. Used at least for RPMB support. > > Signed-off-by: Alex Macro <alex.macro@stericsson.com> > Signed-off-by: Loic Pallardy <loic.pallardy@stericsson.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Acked-by: Johan Rudholm <johan.rudholm@stericsson.com> > Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Krishna Konda <kkonda@codeaurora.org>
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);