blob: f98deafc83b3622fd59e3834eb26453847b2f165 [file] [log] [blame]
From d01f455066d08fa491673905bf017f81c6cf1ec0 Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Thu, 18 Jan 2018 01:28:06 +0900
Subject: [PATCH 0552/1795] mmc: tmio: refactor .get_ro hook
This IP provides the write protect signal level in the status
register, but it is also possible to use GPIO for WP. They are
exclusive, so it is not efficient to call mmc_gpio_get_ro() every
time from tmio_mmc_get_ro() if we know gpio_ro is not used.
Check the capability of gpio_ro just once in the probe function,
then set mmc_gpio_get_ro to .get_ro if it is the case.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
(cherry picked from commit 1910b87f7a9e6d9f9085d36e45dce1e5547c692d)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
drivers/mmc/host/tmio_mmc_core.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index 1417574a47e7..e7ac38abcc05 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1076,15 +1076,9 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
struct tmio_mmc_data *pdata = host->pdata;
- int ret = mmc_gpio_get_ro(mmc);
- if (ret >= 0)
- return ret;
-
- ret = !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
- (sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
-
- return ret;
+ return !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
+ (sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
}
static int tmio_multi_io_quirk(struct mmc_card *card,
@@ -1247,6 +1241,9 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
}
mmc->max_seg_size = mmc->max_req_size;
+ if (mmc_can_gpio_ro(mmc))
+ _host->ops.get_ro = mmc_gpio_get_ro;
+
_host->native_hotplug = !(mmc_can_gpio_cd(mmc) ||
mmc->caps & MMC_CAP_NEEDS_POLL ||
!mmc_card_is_removable(mmc));
--
2.19.0