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Date: Sun, 4 Jan 2015 16:48:55 +0100
From: Richard Weinberger <richard@....at>
To: ssantosh@...nel.org
Cc: linux-kernel@...r.kernel.org, d.walter@...0.at,
Richard Weinberger <richard@....at>
Subject: [PATCH] ddr: Use less generic identifiers
At least on UML this identifiers clash with register names.
Use something less generic than Rx, Cx and Cx.
CC lib//jedec_ddr_data.o
In file included from ./arch/um/include/asm/ptrace-generic.h:11:0,
from ./arch/x86/um/asm/ptrace.h:8,
from ./arch/x86/include/asm/alternative.h:8,
from ./arch/x86/include/asm/bitops.h:16,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/linux/list.h:8,
from include/linux/module.h:9,
from lib//jedec_ddr_data.c:14:
./arch/x86/include/uapi/asm/ptrace-abi.h:28:0: warning: "R15" redefined [enabled by default]
#define R15 0
Signed-off-by: Richard Weinberger <richard@....at>
---
Please note that this patch is untested.
Thanks,
//richard
---
drivers/memory/emif.c | 4 ++--
include/memory/jedec_ddr.h | 36 ++++++++++++++++++------------------
lib/jedec_ddr_data.c | 20 ++++++++++----------
3 files changed, 30 insertions(+), 30 deletions(-)
diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c
index 04644e7..e0aa09f 100644
--- a/drivers/memory/emif.c
+++ b/drivers/memory/emif.c
@@ -439,7 +439,7 @@ static u32 get_sdram_tim_1_shdw(const struct lpddr2_timings *timings,
val = max(min_tck->tWTR, DIV_ROUND_UP(timings->tWTR, t_ck)) - 1;
tim1 |= val << T_WTR_SHIFT;
- if (addressing->num_banks == B8)
+ if (addressing->num_banks == DDR_BANK_8)
val = DIV_ROUND_UP(timings->tFAW, t_ck*4);
else
val = max(min_tck->tRRD, DIV_ROUND_UP(timings->tRRD, t_ck));
@@ -476,7 +476,7 @@ static u32 get_sdram_tim_1_shdw_derated(const struct lpddr2_timings *timings,
* tFAW is approximately 4 times tRRD. So add 1875*4 = 7500ps
* to tFAW for de-rating
*/
- if (addressing->num_banks == B8) {
+ if (addressing->num_banks == DDR_BANK_8) {
val = DIV_ROUND_UP(timings->tFAW + 7500, 4 * t_ck) - 1;
} else {
val = DIV_ROUND_UP(timings->tRRD + 1875, t_ck);
diff --git a/include/memory/jedec_ddr.h b/include/memory/jedec_ddr.h
index ddad0f8..39144d0 100644
--- a/include/memory/jedec_ddr.h
+++ b/include/memory/jedec_ddr.h
@@ -40,28 +40,28 @@
#define DDR_IO_WIDTH_32 4
/* Number of Row bits */
-#define R9 9
-#define R10 10
-#define R11 11
-#define R12 12
-#define R13 13
-#define R14 14
-#define R15 15
-#define R16 16
+#define DDR_ROW_9 9
+#define DDR_ROW_10 10
+#define DDR_ROW_11 11
+#define DDR_ROW_12 12
+#define DDR_ROW_13 13
+#define DDR_ROW_14 14
+#define DDR_ROW_15 15
+#define DDR_ROW_16 16
/* Number of Column bits */
-#define C7 7
-#define C8 8
-#define C9 9
-#define C10 10
-#define C11 11
-#define C12 12
+#define DDR_COL_7 7
+#define DDR_COL_8 8
+#define DDR_COL_9 9
+#define DDR_COL_10 10
+#define DDR_COL_11 11
+#define DDR_COL_12 12
/* Number of Banks */
-#define B1 0
-#define B2 1
-#define B4 2
-#define B8 3
+#define DDR_BANK_1 0
+#define DDR_BANK_2 1
+#define DDR_BANK_4 2
+#define DDR_BANK_8 3
/* Refresh rate in nano-seconds */
#define T_REFI_15_6 15600
diff --git a/lib/jedec_ddr_data.c b/lib/jedec_ddr_data.c
index 6d2cbf1..2181be4 100644
--- a/lib/jedec_ddr_data.c
+++ b/lib/jedec_ddr_data.c
@@ -16,16 +16,16 @@
/* LPDDR2 addressing details from JESD209-2 section 2.4 */
const struct lpddr2_addressing
lpddr2_jedec_addressing_table[NUM_DDR_ADDR_TABLE_ENTRIES] = {
- {B4, T_REFI_15_6, T_RFC_90}, /* 64M */
- {B4, T_REFI_15_6, T_RFC_90}, /* 128M */
- {B4, T_REFI_7_8, T_RFC_90}, /* 256M */
- {B4, T_REFI_7_8, T_RFC_90}, /* 512M */
- {B8, T_REFI_7_8, T_RFC_130}, /* 1GS4 */
- {B8, T_REFI_3_9, T_RFC_130}, /* 2GS4 */
- {B8, T_REFI_3_9, T_RFC_130}, /* 4G */
- {B8, T_REFI_3_9, T_RFC_210}, /* 8G */
- {B4, T_REFI_7_8, T_RFC_130}, /* 1GS2 */
- {B4, T_REFI_3_9, T_RFC_130}, /* 2GS2 */
+ {DDR_BANK_4, T_REFI_15_6, T_RFC_90}, /* 64M */
+ {DDR_BANK_4, T_REFI_15_6, T_RFC_90}, /* 128M */
+ {DDR_BANK_4, T_REFI_7_8, T_RFC_90}, /* 256M */
+ {DDR_BANK_4, T_REFI_7_8, T_RFC_90}, /* 512M */
+ {DDR_BANK_8, T_REFI_7_8, T_RFC_130}, /* 1GS4 */
+ {DDR_BANK_8, T_REFI_3_9, T_RFC_130}, /* 2GS4 */
+ {DDR_BANK_8, T_REFI_3_9, T_RFC_130}, /* 4G */
+ {DDR_BANK_8, T_REFI_3_9, T_RFC_210}, /* 8G */
+ {DDR_BANK_4, T_REFI_7_8, T_RFC_130}, /* 1GS2 */
+ {DDR_BANK_4, T_REFI_3_9, T_RFC_130}, /* 2GS2 */
};
EXPORT_SYMBOL_GPL(lpddr2_jedec_addressing_table);
--
1.8.4.5
--
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