Change the spare fuse base from a definition to a variable.
It provides flexibilty to read spare fuse on different chip.
Signed-off-by: Danny Huang <dahu...@nvidia.com>
---
arch/arm/mach-tegra/fuse.c | 19 ++++++++++++-------
arch/arm/mach-tegra/fuse.h | 2 ++
2 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c
index 6c752e8..bd19c2f 100644
--- a/arch/arm/mach-tegra/fuse.c
+++ b/arch/arm/mach-tegra/fuse.c
@@ -28,7 +28,8 @@
#define FUSE_UID_LOW 0x108
#define FUSE_UID_HIGH 0x10c
#define FUSE_SKU_INFO 0x110
-#define FUSE_SPARE_BIT 0x200
+
+#define TEGRA20_FUSE_SPARE_BIT 0x200
int tegra_sku_id;
int tegra_cpu_process_id;
@@ -36,6 +37,8 @@ int tegra_core_process_id;
int tegra_chip_id;
enum tegra_revision tegra_revision;
+static int tegra_fuse_spare_bit;
+
/* The BCT to use at boot is specified by board straps that can be read
* through a APB misc register and decoded. 2 bits, i.e. 4 possible BCTs.
*/
@@ -56,14 +59,14 @@ static const char *tegra_revision_name[TEGRA_REVISION_MAX]
= {
[TEGRA_REVISION_A04] = "A04",
};
-static inline u32 tegra_fuse_readl(unsigned long offset)
+u32 tegra_fuse_readl(unsigned long offset)
{
return tegra_apb_readl(TEGRA_FUSE_BASE + offset);
}
-static inline bool get_spare_fuse(int bit)
+bool tegra_spare_fuse(int bit)
{
- return tegra_fuse_readl(FUSE_SPARE_BIT + bit * 4);
+ return tegra_fuse_readl(tegra_fuse_spare_bit + bit * 4);
}
static enum tegra_revision tegra_get_revision(u32 id)
@@ -77,7 +80,7 @@ static enum tegra_revision tegra_get_revision(u32 id)
return TEGRA_REVISION_A02;
case 3:
if (tegra_chip_id == TEGRA20 &&
- (get_spare_fuse(18) || get_spare_fuse(19)))
+ (tegra_spare_fuse(18) || tegra_spare_fuse(19)))
return TEGRA_REVISION_A03p;
else
return TEGRA_REVISION_A03;
@@ -99,10 +102,12 @@ void tegra_init_fuse(void)
reg = tegra_fuse_readl(FUSE_SKU_INFO);
tegra_sku_id = reg & 0xFF;
- reg = tegra_fuse_readl(FUSE_SPARE_BIT);
+ tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT;
+
+ reg = tegra_fuse_readl(tegra_fuse_spare_bit);
tegra_cpu_process_id = (reg >> 6) & 3;
- reg = tegra_fuse_readl(FUSE_SPARE_BIT);
+ reg = tegra_fuse_readl(tegra_fuse_spare_bit);
tegra_core_process_id = (reg >> 12) & 3;
reg = tegra_apb_readl(TEGRA_APB_MISC_BASE + STRAP_OPT);
diff --git a/arch/arm/mach-tegra/fuse.h b/arch/arm/mach-tegra/fuse.h
index d2107b2..aef1223 100644
--- a/arch/arm/mach-tegra/fuse.h
+++ b/arch/arm/mach-tegra/fuse.h
@@ -48,5 +48,7 @@ extern int tegra_bct_strapping;
unsigned long long tegra_chip_uid(void);
void tegra_init_fuse(void);
+bool tegra_spare_fuse(int bit);
+u32 tegra_fuse_readl(unsigned long offset);
#endif
--
1.8.0
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
