mmc: tmio: name 0xd8 as CTL_DMA_ENABLE
authorSimon Horman <horms@verge.net.au>
Mon, 20 Jun 2011 23:00:08 +0000 (08:00 +0900)
committerChris Ball <cjb@laptop.org>
Wed, 20 Jul 2011 21:20:55 +0000 (17:20 -0400)
This reflects at least the current usage of this register
and I think it improves the readability of the code ever so slightly.

Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Magnus Damm <magnus.damm@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
drivers/mmc/host/tmio_mmc_dma.c
include/linux/mmc/tmio.h

index 25f1ad6cbe098a9d4cd2b270423eade6d6cb4326..9c4da6637503baacdc72abc96f2aee2ac7e9a670 100644 (file)
@@ -26,7 +26,7 @@ static void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable)
 {
 #if defined(CONFIG_SUPERH) || defined(CONFIG_ARCH_SHMOBILE)
        /* Switch DMA mode on or off - SuperH specific? */
-       writew(enable ? 2 : 0, host->ctl + (0xd8 << host->bus_shift));
+       writew(enable ? 2 : 0, host->ctl + (CTL_DMA_ENABLE << host->bus_shift));
 #endif
 }
 
index 551490f0613dfa426f4e007ac5d65db3a008c57a..3ae377623db0c100105d06ff4a68d21805d4f0a5 100644 (file)
@@ -30,6 +30,7 @@
 #define CTL_TRANSACTION_CTL 0x34
 #define CTL_SDIO_STATUS 0x36
 #define CTL_SDIO_IRQ_MASK 0x38
+#define CTL_DMA_ENABLE 0xd8
 #define CTL_RESET_SD 0xe0
 #define CTL_SDIO_REGS 0x100
 #define CTL_CLK_AND_WAIT_CTL 0x138