diff options
Diffstat (limited to 'arch/arm/mach-omap2/prm44xx.c')
-rw-r--r-- | arch/arm/mach-omap2/prm44xx.c | 49 |
1 files changed, 42 insertions, 7 deletions
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c index 6d3467a..7498bc7 100644 --- a/arch/arm/mach-omap2/prm44xx.c +++ b/arch/arm/mach-omap2/prm44xx.c @@ -346,6 +346,37 @@ static u32 omap44xx_prm_read_reset_sources(void) return r; } +/** + * omap44xx_prm_was_any_context_lost_old - was module hardware context lost? + * @part: PRM partition ID (e.g., OMAP4430_PRM_PARTITION) + * @inst: PRM instance offset (e.g., OMAP4430_PRM_MPU_INST) + * @idx: CONTEXT register offset + * + * Return 1 if any bits were set in the *_CONTEXT_* register + * identified by (@part, @inst, @idx), which means that some context + * was lost for that module; otherwise, return 0. + */ +static bool omap44xx_prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx) +{ + return (omap4_prminst_read_inst_reg(part, inst, idx)) ? 1 : 0; +} + +/** + * omap44xx_prm_clear_context_lost_flags_old - clear context loss flags + * @part: PRM partition ID (e.g., OMAP4430_PRM_PARTITION) + * @inst: PRM instance offset (e.g., OMAP4430_PRM_MPU_INST) + * @idx: CONTEXT register offset + * + * Clear hardware context loss bits for the module identified by + * (@part, @inst, @idx). No return value. XXX Writes to reserved bits; + * is there a way to avoid this? + */ +static void omap44xx_prm_clear_context_loss_flags_old(u8 part, s16 inst, + u16 idx) +{ + omap4_prminst_write_inst_reg(0xffffffff, part, inst, idx); +} + /* Powerdomain low-level functions */ static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst) @@ -613,24 +644,28 @@ struct pwrdm_ops omap4_pwrdm_operations = { */ static struct prm_ll_data omap44xx_prm_ll_data = { .read_reset_sources = &omap44xx_prm_read_reset_sources, + .was_any_context_lost_old = &omap44xx_prm_was_any_context_lost_old, + .clear_context_loss_flags_old = &omap44xx_prm_clear_context_loss_flags_old, }; -static int __init omap44xx_prm_init(void) +int __init omap44xx_prm_init(void) { - int ret; - if (!cpu_is_omap44xx()) return 0; - ret = prm_register(&omap44xx_prm_ll_data); - if (ret) - return ret; + return prm_register(&omap44xx_prm_ll_data); +} + +static int __init omap44xx_prm_late_init(void) +{ + if (!cpu_is_omap44xx()) + return 0; omap44xx_prm_enable_io_wakeup(); return omap_prcm_register_chain_handler(&omap4_prcm_irq_setup); } -subsys_initcall(omap44xx_prm_init); +subsys_initcall(omap44xx_prm_late_init); static void __exit omap44xx_prm_exit(void) { |