From: Peter Maydell <peter.maydell@linaro.org>
Date: Sun, 18 Dec 2011 20:37:52 +0000 (+0100)
Subject: hw/sd.c: Add comment regarding CARD_STATUS_* defines
X-Git-Tag: v1.1-rc0~695
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b8d334c828f14a341e18bcc123b303ec29f8df76;p=thirdparty%2Fqemu.git

hw/sd.c: Add comment regarding CARD_STATUS_* defines

Add a clarifying comment about what the CARD_STATUS_[ABC]
macros are defining.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
---

diff --git a/hw/sd.c b/hw/sd.c
index a1c98c0100a..245b6c30466 100644
--- a/hw/sd.c
+++ b/hw/sd.c
@@ -309,6 +309,11 @@ static void sd_set_rca(SDState *sd)
     sd->rca += 0x4567;
 }
 
+/* Card status bits, split by clear condition:
+ * A : According to the card current state
+ * B : Always related to the previous command
+ * C : Cleared by read
+ */
 #define CARD_STATUS_A	0x02004100
 #define CARD_STATUS_B	0x00c01e00
 #define CARD_STATUS_C	0xfd39a028