UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ARM: tegra: fuse: use apbio dma for register access 

Use the apbio dma functions for accessing the fuse registers.

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2011-10-13 00:14:08 -07:00
parent e2f91578b3
commit d262f49d10
1 changed files with 8 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
arch/arm/mach-tegra/fuse.c
View File

@ -23,20 +23,16 @@
#include <mach/iomap.h>
#include "fuse.h"
#include "apbio.h"
#define FUSE_UID_LOW 0x108
#define FUSE_UID_HIGH 0x10c
#define FUSE_SKU_INFO 0x110
#define FUSE_SPARE_BIT 0x200
static inline u32 fuse_readl(unsigned long offset)
static inline u32 tegra_fuse_readl(unsigned long offset)
{
return readl(IO_TO_VIRT(TEGRA_FUSE_BASE + offset));
}
static inline void fuse_writel(u32 value, unsigned long offset)
{
writel(value, IO_TO_VIRT(TEGRA_FUSE_BASE + offset));
return tegra_apb_readl(TEGRA_FUSE_BASE + offset);
}
void tegra_init_fuse(void)
@ -54,15 +50,15 @@ unsigned long long tegra_chip_uid(void)
{
unsigned long long lo, hi;
lo = fuse_readl(FUSE_UID_LOW);
hi = fuse_readl(FUSE_UID_HIGH);
lo = tegra_fuse_readl(FUSE_UID_LOW);
hi = tegra_fuse_readl(FUSE_UID_HIGH);
return (hi << 32ull) | lo;
}
int tegra_sku_id(void)
{
int sku_id;
u32 reg = fuse_readl(FUSE_SKU_INFO);
u32 reg = tegra_fuse_readl(FUSE_SKU_INFO);
sku_id = reg & 0xFF;
return sku_id;
}
@ -70,7 +66,7 @@ int tegra_sku_id(void)
int tegra_cpu_process_id(void)
{
int cpu_process_id;
u32 reg = fuse_readl(FUSE_SPARE_BIT);
u32 reg = tegra_fuse_readl(FUSE_SPARE_BIT);
cpu_process_id = (reg >> 6) & 3;
return cpu_process_id;
}
@ -78,7 +74,7 @@ int tegra_cpu_process_id(void)
int tegra_core_process_id(void)
{
int core_process_id;
u32 reg = fuse_readl(FUSE_SPARE_BIT);
u32 reg = tegra_fuse_readl(FUSE_SPARE_BIT);
core_process_id = (reg >> 12) & 3;
return core_process_id;
}