diff options
| -rw-r--r-- | arch/arm/mach-omap2/prminst44xx.c | 40 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/prminst44xx.h | 3 |
2 files changed, 28 insertions, 15 deletions
diff --git a/arch/arm/mach-omap2/prminst44xx.c b/arch/arm/mach-omap2/prminst44xx.c index 69f0dd0..225e025 100644 --- a/arch/arm/mach-omap2/prminst44xx.c +++ b/arch/arm/mach-omap2/prminst44xx.c @@ -31,6 +31,8 @@ static void __iomem *_prm_bases[OMAP4_MAX_PRCM_PARTITIONS]; +static s32 prm_dev_inst = PRM_INSTANCE_UNKNOWN; + /** * omap_prm_base_init - Populates the prm partitions * @@ -43,6 +45,24 @@ void omap_prm_base_init(void) _prm_bases[OMAP4430_PRCM_MPU_PARTITION] = prcm_mpu_base; } +s32 omap4_prmst_get_prm_dev_inst(void) +{ + if (prm_dev_inst != PRM_INSTANCE_UNKNOWN) + return prm_dev_inst; + + /* This cannot be done way early at boot.. as things are not setup */ + if (cpu_is_omap44xx()) + prm_dev_inst = OMAP4430_PRM_DEVICE_INST; + else if (soc_is_omap54xx()) + prm_dev_inst = OMAP54XX_PRM_DEVICE_INST; + else if (soc_is_dra7xx()) + prm_dev_inst = DRA7XX_PRM_DEVICE_INST; + else if (soc_is_am43xx()) + prm_dev_inst = AM43XX_PRM_DEVICE_INST; + + return prm_dev_inst; +} + /* Read a register in a PRM instance */ u32 omap4_prminst_read_inst_reg(u8 part, s16 inst, u16 idx) { @@ -169,28 +189,18 @@ int omap4_prminst_deassert_hardreset(u8 shift, u8 part, s16 inst, void omap4_prminst_global_warm_sw_reset(void) { u32 v; - s16 dev_inst; + s32 inst = omap4_prmst_get_prm_dev_inst(); - if (cpu_is_omap44xx()) - dev_inst = OMAP4430_PRM_DEVICE_INST; - else if (soc_is_omap54xx()) - dev_inst = OMAP54XX_PRM_DEVICE_INST; - else if (soc_is_dra7xx()) - dev_inst = DRA7XX_PRM_DEVICE_INST; - else if (soc_is_am43xx()) - dev_inst = AM43XX_PRM_DEVICE_INST; - else + if (inst == PRM_INSTANCE_UNKNOWN) return; - v = omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION, dev_inst, + v = omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION, inst, OMAP4_PRM_RSTCTRL_OFFSET); v |= OMAP4430_RST_GLOBAL_WARM_SW_MASK; omap4_prminst_write_inst_reg(v, OMAP4430_PRM_PARTITION, - dev_inst, - OMAP4_PRM_RSTCTRL_OFFSET); + inst, OMAP4_PRM_RSTCTRL_OFFSET); /* OCP barrier */ v = omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION, - dev_inst, - OMAP4_PRM_RSTCTRL_OFFSET); + inst, OMAP4_PRM_RSTCTRL_OFFSET); } diff --git a/arch/arm/mach-omap2/prminst44xx.h b/arch/arm/mach-omap2/prminst44xx.h index a2ede2d..583aa37 100644 --- a/arch/arm/mach-omap2/prminst44xx.h +++ b/arch/arm/mach-omap2/prminst44xx.h @@ -12,6 +12,9 @@ #ifndef __ARCH_ASM_MACH_OMAP2_PRMINST44XX_H #define __ARCH_ASM_MACH_OMAP2_PRMINST44XX_H +#define PRM_INSTANCE_UNKNOWN -1 +extern s32 omap4_prmst_get_prm_dev_inst(void); + /* * In an ideal world, we would not export these low-level functions, * but this will probably take some time to fix properly |