From: yegor_sub1@visionsystems•de (Yegor Yefremov)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] GPMC: add ECC control definitions
Date: Mon, 23 Jan 2012 13:04:03 +0100 [thread overview]
Message-ID: <4F1D4CB3.5080803@visionsystems.de> (raw)
Signed-off-by: Yegor Yefremov <yegorslists@googlemail•com>
---
arch/arm/mach-omap2/gpmc.c | 30 +++++++++++++++++++++++++-----
1 file changed, 25 insertions(+), 5 deletions(-)
Index: b/arch/arm/mach-omap2/gpmc.c
===================================================================
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -50,6 +50,19 @@
#define GPMC_ECC_SIZE_CONFIG 0x1fc
#define GPMC_ECC1_RESULT 0x200
+/* GPMC ECC control settings */
+#define GPMC_ECC_CTRL_ECCCLEAR 0x100
+#define GPMC_ECC_CTRL_ECCDISABLE 0x000
+#define GPMC_ECC_CTRL_ECCREG1 0x001
+#define GPMC_ECC_CTRL_ECCREG2 0x002
+#define GPMC_ECC_CTRL_ECCREG3 0x003
+#define GPMC_ECC_CTRL_ECCREG4 0x004
+#define GPMC_ECC_CTRL_ECCREG5 0x005
+#define GPMC_ECC_CTRL_ECCREG6 0x006
+#define GPMC_ECC_CTRL_ECCREG7 0x007
+#define GPMC_ECC_CTRL_ECCREG8 0x008
+#define GPMC_ECC_CTRL_ECCREG9 0x009
+
#define GPMC_CS0_OFFSET 0x60
#define GPMC_CS_SIZE 0x30
@@ -855,8 +868,9 @@
gpmc_ecc_used = cs;
/* clear ecc and enable bits */
- val = ((0x00000001<<8) | 0x00000001);
- gpmc_write_reg(GPMC_ECC_CONTROL, val);
+ gpmc_write_reg(GPMC_ECC_CONTROL,
+ GPMC_ECC_CTRL_ECCCLEAR |
+ GPMC_ECC_CTRL_ECCREG1);
/* program ecc and result sizes */
val = ((((ecc_size >> 1) - 1) << 22) | (0x0000000F));
@@ -864,13 +878,19 @@
switch (mode) {
case GPMC_ECC_READ:
- gpmc_write_reg(GPMC_ECC_CONTROL, 0x101);
+ gpmc_write_reg(GPMC_ECC_CONTROL,
+ GPMC_ECC_CTRL_ECCCLEAR |
+ GPMC_ECC_CTRL_ECCREG1);
break;
case GPMC_ECC_READSYN:
- gpmc_write_reg(GPMC_ECC_CONTROL, 0x100);
+ gpmc_write_reg(GPMC_ECC_CONTROL,
+ GPMC_ECC_CTRL_ECCCLEAR |
+ GPMC_ECC_CTRL_ECCDISABLE);
break;
case GPMC_ECC_WRITE:
- gpmc_write_reg(GPMC_ECC_CONTROL, 0x101);
+ gpmc_write_reg(GPMC_ECC_CONTROL,
+ GPMC_ECC_CTRL_ECCCLEAR |
+ GPMC_ECC_CTRL_ECCREG1);
break;
default:
printk(KERN_INFO "Error: Unrecognized Mode[%d]!\n", mode);
next reply other threads:[~2012-01-23 12:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-23 12:04 Yegor Yefremov [this message]
2012-03-05 23:03 ` [PATCH] GPMC: add ECC control definitions Tony Lindgren
2012-03-08 11:10 ` Yegor Yefremov
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