Added a new function: ep93xx_chip_revision() which reads chip revision from the
sysconfig register.
Signed-off-by: Mika Westerberg <mika.westerb...@iki.fi>
---
arch/arm/mach-ep93xx/core.c | 14 ++++++++++++++
arch/arm/mach-ep93xx/include/mach/platform.h | 8 ++++++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 90fb591..07572bb 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -222,6 +222,20 @@ void ep93xx_devcfg_set_clear(unsigned int set_bits,
unsigned int clear_bits)
}
EXPORT_SYMBOL(ep93xx_devcfg_set_clear);
+/**
+ * ep93xx_chip_revision() - returns the EP93xx chip revision
+ *
+ * See <mach/platform.h> for more information.
+ */
+unsigned int ep93xx_chip_revision(void)
+{
+ unsigned int v;
+
+ v = __raw_readl(EP93XX_SYSCON_SYSCFG);
+ v &= EP93XX_SYSCON_SYSCFG_REV_MASK;
+ v >>= EP93XX_SYSCON_SYSCFG_REV_SHIFT;
+ return v;
+}
/*************************************************************************
* EP93xx peripheral handling
diff --git a/arch/arm/mach-ep93xx/include/mach/platform.h
b/arch/arm/mach-ep93xx/include/mach/platform.h
index c6dc14d..b663390 100644
--- a/arch/arm/mach-ep93xx/include/mach/platform.h
+++ b/arch/arm/mach-ep93xx/include/mach/platform.h
@@ -33,6 +33,14 @@ static inline void ep93xx_devcfg_clear_bits(unsigned int
bits)
ep93xx_devcfg_set_clear(0x00, bits);
}
+#define EP93XX_CHIP_REV_D0 3
+#define EP93XX_CHIP_REV_D1 4
+#define EP93XX_CHIP_REV_E0 5
+#define EP93XX_CHIP_REV_E1 6
+#define EP93XX_CHIP_REV_E2 7
+
+unsigned int ep93xx_chip_revision(void);
+
void ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr);
void ep93xx_register_i2c(struct i2c_gpio_platform_data *data,
struct i2c_board_info *devices, int num);
--
1.5.6.5
------------------------------------------------------------------------------
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
_______________________________________________
spi-devel-general mailing list
spi-devel-general@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/spi-devel-general
