Patchwork [02/10] hw/sd.c: Add comment regarding CARD_STATUS_* defines

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Submitter Peter Maydell
Date Dec. 18, 2011, 8:37 p.m.
Message ID <1324240680-26905-3-git-send-email-peter.maydell@linaro.org>
Download mbox | patch
Permalink /patch/132116/
State New
Headers show

Comments

Peter Maydell - Dec. 18, 2011, 8:37 p.m.
Add a clarifying comment about what the CARD_STATUS_[ABC]
macros are defining.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/sd.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

Patch

diff --git a/hw/sd.c b/hw/sd.c
index a1c98c0..245b6c3 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