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Commit d262f49d authored by Olof Johansson's avatar Olof Johansson
Browse files

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



Use the apbio dma functions for accessing the fuse registers.

Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parent e2f91578

arch/arm/mach-tegra/fuse.c

+8 −12
Original line number Diff line number Diff line
@@ -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;

}