From: Shawn Lin <shawn.lin@rock-chips.com>
To: Jaehoon Chung <jh80.chung@samsung.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc@vger.kernel.org, Doug Anderson <dianders@chromium.org>,
linux-rockchip@lists.infradead.org,
Shawn Lin <shawn.lin@rock-chips.com>
Subject: [RFC PATCH v2 3/4] mmc: core: expose the capability of gpio card detect
Date: Fri, 30 Sep 2016 16:48:36 +0800 [thread overview]
Message-ID: <1475225317-2815-4-git-send-email-shawn.lin@rock-chips.com> (raw)
In-Reply-To: <1475225317-2815-1-git-send-email-shawn.lin@rock-chips.com>
Add new helper API mmc_can_gpio_cd for slot-gpio to make
host drivers know whether it supports gpio card detect.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---
drivers/mmc/core/slot-gpio.c | 8 ++++++++
include/linux/mmc/slot-gpio.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c
index 27117ba..babe591 100644
--- a/drivers/mmc/core/slot-gpio.c
+++ b/drivers/mmc/core/slot-gpio.c
@@ -258,6 +258,14 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
}
EXPORT_SYMBOL(mmc_gpiod_request_cd);
+bool mmc_can_gpio_cd(struct mmc_host *host)
+{
+ struct mmc_gpio *ctx = host->slot.handler_priv;
+
+ return ctx->cd_gpio ? true : false;
+}
+EXPORT_SYMBOL(mmc_can_gpio_cd);
+
/**
* mmc_gpiod_request_ro - request a gpio descriptor for write protection
* @host: mmc host
diff --git a/include/linux/mmc/slot-gpio.h b/include/linux/mmc/slot-gpio.h
index 3945a8c..a7972cd 100644
--- a/include/linux/mmc/slot-gpio.h
+++ b/include/linux/mmc/slot-gpio.h
@@ -29,5 +29,6 @@ int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
void mmc_gpio_set_cd_isr(struct mmc_host *host,
irqreturn_t (*isr)(int irq, void *dev_id));
void mmc_gpiod_request_cd_irq(struct mmc_host *host);
+bool mmc_can_gpio_cd(struct mmc_host *host);
#endif
--
2.3.7
next prev parent reply other threads:[~2016-09-30 8:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-30 8:48 [RFC PATCH v2 0/4] Init runtime PM support for dw_mmc Shawn Lin
2016-09-30 8:48 ` [RFC PATCH v2 1/4] mmc: dw_mmc: add runtime PM callback Shawn Lin
2016-10-07 4:12 ` Jaehoon Chung
[not found] ` <2dd84d82-a14b-7d5e-80f0-89e6c0b1aaae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2016-10-07 9:19 ` Shawn Lin
2016-09-30 8:48 ` [RFC PATCH v2 2/4] mmc: dw_mmc-rockchip: add runtime PM support Shawn Lin
2016-09-30 8:48 ` Shawn Lin [this message]
2016-09-30 8:48 ` [RFC PATCH v2 4/4] mmc: dw_mmc-rockchip: disable biu clk and genpd if possible Shawn Lin
[not found] ` <1475225317-2815-5-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2016-10-07 4:15 ` Jaehoon Chung
[not found] ` <b9180674-648a-d2d1-0221-cec90b73adab-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2016-10-07 9:01 ` Shawn Lin
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