[15/92] ram: rk3399: Add column enc macro
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Message ID 20190611145135.21399-16-jagan@amarulasolutions.com
State New
Headers show
Series
  • ram: rk3399: Add LPDDR4 support
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Commit Message

Jagan Teki June 11, 2019, 2:50 p.m. UTC 
Add simplified and meaningful macro for column.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
---
 arch/arm/include/asm/arch-rockchip/sdram_common.h | 1 +
 drivers/ram/rockchip/sdram_rk3399.c               | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

Patch
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diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h b/arch/arm/include/asm/arch-rockchip/sdram_common.h
index 2dfbc75bb7..8e809e8dd6 100644
--- a/arch/arm/include/asm/arch-rockchip/sdram_common.h
+++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h
@@ -44,6 +44,7 @@ 
 					 SYS_REG_RANK_SHIFT(ch))
 #define SYS_REG_COL_SHIFT(ch)		(9 + (ch) * 16)
 #define SYS_REG_COL_MASK		3
+#define SYS_REG_ENC_COL(n, ch)		(((n) - 9) << SYS_REG_COL_SHIFT(ch))
 #define SYS_REG_BK_SHIFT(ch)		(8 + (ch) * 16)
 #define SYS_REG_BK_MASK			1
 #define SYS_REG_CS0_ROW_SHIFT(ch)	(6 + (ch) * 16)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index d801ee691c..ad6c74374a 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -1024,7 +1024,7 @@  static void dram_all_config(struct dram_info *dram,
 		sys_reg |= SYS_REG_ENC_ROW_3_4(info->row_3_4, channel);
 		sys_reg |= SYS_REG_ENC_CHINFO(channel);
 		sys_reg |= SYS_REG_ENC_RANK(info->rank, channel);
-		sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(channel);
+		sys_reg |= SYS_REG_ENC_COL(info->col, channel);
 		sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(channel);
 		sys_reg |= (info->cs0_row - 13) <<
 			    SYS_REG_CS0_ROW_SHIFT(channel);