[ARM] 3349/1: ixp4xx exp bus defines

Patch from Alessandro Zummo

This patch adds a few defines that are useful
to configure the CS regions on ixp4xx.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: OEyvind Repvik <oyvind@repvik.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 27 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ixp4xx/platform.h b/include/asm-arm/arch-ixp4xx/platform.h
index daf9790645ca..13aee17b0475 100644
--- a/include/asm-arm/arch-ixp4xx/platform.h
+++ b/include/asm-arm/arch-ixp4xx/platform.h
@@ -38,6 +38,33 @@ extern unsigned long ixp4xx_exp_bus_size;
 #define IXP4XX_EXP_BUS_BASE(region)\
                 (IXP4XX_EXP_BUS_BASE_PHYS + ((region) * ixp4xx_exp_bus_size))
 
+#define IXP4XX_EXP_BUS_END(region)\
+                (IXP4XX_EXP_BUS_BASE(region) + ixp4xx_exp_bus_size - 1)
+
+/* Those macros can be used to adjust timing and configure
+ * other features for each region.
+ */
+
+#define IXP4XX_EXP_BUS_RECOVERY_T(x)    (((x) & 0x0f) << 16)
+#define IXP4XX_EXP_BUS_HOLD_T(x)        (((x) & 0x03) << 20)
+#define IXP4XX_EXP_BUS_STROBE_T(x)      (((x) & 0x0f) << 22)
+#define IXP4XX_EXP_BUS_SETUP_T(x)       (((x) & 0x03) << 26)
+#define IXP4XX_EXP_BUS_ADDR_T(x)        (((x) & 0x03) << 28)
+#define IXP4XX_EXP_BUS_SIZE(x)          (((x) & 0x0f) << 10)
+#define IXP4XX_EXP_BUS_CYCLES(x)        (((x) & 0x03) << 14)
+
+#define IXP4XX_EXP_BUS_CS_EN            (1L << 31)
+#define IXP4XX_EXP_BUS_BYTE_RD16        (1L << 6)
+#define IXP4XX_EXP_BUS_HRDY_POL         (1L << 5)
+#define IXP4XX_EXP_BUS_MUX_EN           (1L << 4)
+#define IXP4XX_EXP_BUS_SPLT_EN          (1L << 3)
+#define IXP4XX_EXP_BUS_WR_EN            (1L << 1)
+#define IXP4XX_EXP_BUS_BYTE_EN          (1L << 0)
+
+#define IXP4XX_EXP_BUS_CYCLES_INTEL     0x00
+#define IXP4XX_EXP_BUS_CYCLES_MOTOROLA  0x01
+#define IXP4XX_EXP_BUS_CYCLES_HPI       0x02
+
 #define IXP4XX_FLASH_WRITABLE   (0x2)
 #define IXP4XX_FLASH_DEFAULT    (0xbcd23c40)
 #define IXP4XX_FLASH_WRITE      (0xbcd23c42)