diff mbox

[v6,3/5] mmc: core: Add card_busy to host_ops

Message ID 1359382108-958-4-git-send-email-johan.rudholm@stericsson.com
State Accepted
Commit d887874e0ead6a0b86b6046b872730c81c121352
Headers show

Commit Message

Johan Rudholm Jan. 28, 2013, 2:08 p.m. UTC 
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>
---
 include/linux/mmc/host.h |    3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 523d570..0373b0a 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);