From: Johan Rudholm <johan.rudholm@stericsson.com>
Date: Mon, 28 Jan 2013 14:08:26 +0000 (+0100)
Subject: mmc: core: Add card_busy to host_ops
X-Git-Tag: next-20130218~55^2~18
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=25322648eb6920e2f84d577c6d96a6bff0a8dfd1;p=karo-tx-linux.git

mmc: core: Add card_busy to host_ops

This host_ops member is used to test if the card is signaling busy by
pulling dat[0:3] low.

Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 523d570f58ad..0373b0a6daac 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -131,6 +131,9 @@ struct mmc_host_ops {
 
 	int	(*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
 
+	/* Check if the card is pulling dat[0:3] low */
+	int	(*card_busy)(struct mmc_host *host);
+
 	/* The tuning command opcode value is different for SD and eMMC cards */
 	int	(*execute_tuning)(struct mmc_host *host, u32 opcode);
 	void	(*enable_preset_value)(struct mmc_host *host, bool enable);