Premi, Sanjeev had written, on 07/21/2010 10:12 AM, the following:
This patch adds macros to evaluate the cpu revision.
These macros increase readability by reducing the
repetitive code when multiple silicon and their
revisions have to be tested.
Example usage would be:
if (cpu_rev_eq(omap34xx, ES_1_0))
Signed-off-by: Sanjeev Premi <premi@xxxxxx>
---
arch/arm/plat-omap/include/plat/cpu.h | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-omap/include/plat/cpu.h b/arch/arm/plat-omap/include/plat/cpu.h
index aa2f4f0..14b1a44 100644
--- a/arch/arm/plat-omap/include/plat/cpu.h
+++ b/arch/arm/plat-omap/include/plat/cpu.h
@@ -70,6 +70,7 @@ unsigned int omap_rev(void);
#define OMAP_REVBITS_20 0x20
#define OMAP_REVBITS_30 0x30
#define OMAP_REVBITS_40 0x40
+#define OMAP_REVBITS_50 0x50
/*
* Get the CPU revision for OMAP devices
@@ -460,4 +461,35 @@ OMAP3_HAS_FEATURE(isp, ISP)
OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)
+/*
+ * Map revision bits to silicon specific revisions
+ */
+#define ES_1_0 OMAP_REVBITS_00
probably need ES_1_1, 1_2 (considering 3630)
+#define ES_2_0 OMAP_REVBITS_10
+#define ES_2_1 OMAP_REVBITS_20
makes sense to go to 2_2
+#define ES_3_0 OMAP_REVBITS_30
+#define ES_3_1 OMAP_REVBITS_40
+#define ES_3_1_2 OMAP_REVBITS_50
3_2?
+
+/*
+ * Macros to evaluate CPU revision
+ */
+#define cpu_rev_lt(cpu,rev) \
+ ((cpu_is_omap ##cpu() && (GET_OMAP_REVISION() < (rev))) ? 1 : 0)
+
+#define cpu_rev_le(cpu,rev) \
+ ((cpu_is_omap ##cpu() && (GET_OMAP_REVISION() <= (rev))) ? 1 : 0)
+
+#define cpu_rev_eq(cpu,rev) \
+ ((cpu_is_omap ##cpu() && (GET_OMAP_REVISION() == (rev))) ? 1 : 0)
+
+#define cpu_rev_ne(cpu,rev) \
+ ((cpu_is_omap ##cpu() && (GET_OMAP_REVISION() != (rev))) ? 1 : 0)
+
+#define cpu_rev_ge(cpu,rev) \
+ ((cpu_is_omap ##cpu() && (GET_OMAP_REVISION() >= (rev))) ? 1 : 0)
+
+#define cpu_rev_gt(cpu,rev) \
+ ((cpu_is_omap ##cpu() && (GET_OMAP_REVISION() > (rev))) ? 1 : 0)
+
#endif
--
Regards,
Nishanth Menon
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