From d887874e0ead6a0b86b6046b872730c81c121352 Mon Sep 17 00:00:00 2001
From: Johan Rudholm <johan.rudholm@stericsson.com>
Date: Mon, 28 Jan 2013 15:08:26 +0100
Subject: [PATCH] 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>
---
include/linux/mmc/host.h | 3 +++
1 file changed, 3 insertions(+)
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);