diff options
Diffstat (limited to 'arch/arm/mach-omap2/omap-wakeupgen.c')
| -rw-r--r-- | arch/arm/mach-omap2/omap-wakeupgen.c | 68 |
1 files changed, 62 insertions, 6 deletions
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c index 369f95a703ac..33ed5d53fa45 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.c +++ b/arch/arm/mach-omap2/omap-wakeupgen.c @@ -58,6 +58,17 @@ static unsigned int irq_banks = DEFAULT_NR_REG_BANKS; static unsigned int max_irqs = DEFAULT_IRQS; static unsigned int omap_secure_apis; +#ifdef CONFIG_CPU_PM +static unsigned int wakeupgen_context[MAX_NR_REG_BANKS]; +#endif + +struct omap_wakeupgen_ops { + void (*save_context)(void); + void (*restore_context)(void); +}; + +static struct omap_wakeupgen_ops *wakeupgen_ops; + /* * Static helper functions. */ @@ -264,6 +275,16 @@ static inline void omap5_irq_save_context(void) } +static inline void am43xx_irq_save_context(void) +{ + u32 i; + + for (i = 0; i < irq_banks; i++) { + wakeupgen_context[i] = wakeupgen_readl(i, 0); + wakeupgen_writel(0, i, CPU0_ID); + } +} + /* * Save WakeupGen interrupt context in SAR BANK3. Restore is done by * ROM code. WakeupGen IP is integrated along with GIC to manage the @@ -280,11 +301,8 @@ static void irq_save_context(void) if (!sar_base) sar_base = omap4_get_sar_ram_base(); - - if (soc_is_omap54xx()) - omap5_irq_save_context(); - else - omap4_irq_save_context(); + if (wakeupgen_ops && wakeupgen_ops->save_context) + wakeupgen_ops->save_context(); } /* @@ -306,6 +324,20 @@ static void irq_sar_clear(void) writel_relaxed(val, sar_base + offset); } +static void am43xx_irq_restore_context(void) +{ + u32 i; + + for (i = 0; i < irq_banks; i++) + wakeupgen_writel(wakeupgen_context[i], i, CPU0_ID); +} + +static void irq_restore_context(void) +{ + if (wakeupgen_ops && wakeupgen_ops->restore_context) + wakeupgen_ops->restore_context(); +} + /* * Save GIC and Wakeupgen interrupt context using secure API * for HS/EMU devices. @@ -319,6 +351,26 @@ static void irq_save_secure_context(void) if (ret != API_HAL_RET_VALUE_OK) pr_err("GIC and Wakeupgen context save failed\n"); } + +/* Define ops for context save and restore for each SoC */ +static struct omap_wakeupgen_ops omap4_wakeupgen_ops = { + .save_context = omap4_irq_save_context, + .restore_context = irq_sar_clear, +}; + +static struct omap_wakeupgen_ops omap5_wakeupgen_ops = { + .save_context = omap5_irq_save_context, + .restore_context = irq_sar_clear, +}; + +static struct omap_wakeupgen_ops am43xx_wakeupgen_ops = { + .save_context = am43xx_irq_save_context, + .restore_context = am43xx_irq_restore_context, +}; +#else +static struct omap_wakeupgen_ops omap4_wakeupgen_ops = {}; +static struct omap_wakeupgen_ops omap5_wakeupgen_ops = {}; +static struct omap_wakeupgen_ops am43xx_wakeupgen_ops = {}; #endif #ifdef CONFIG_HOTPLUG_CPU @@ -359,7 +411,7 @@ static int irq_notifier(struct notifier_block *self, unsigned long cmd, void *v) break; case CPU_CLUSTER_PM_EXIT: if (omap_type() == OMAP2_DEVICE_TYPE_GP) - irq_sar_clear(); + irq_restore_context(); break; } return NOTIFY_OK; @@ -494,9 +546,13 @@ static int __init wakeupgen_init(struct device_node *node, irq_banks = OMAP4_NR_BANKS; max_irqs = OMAP4_NR_IRQS; omap_secure_apis = 1; + wakeupgen_ops = &omap4_wakeupgen_ops; + } else if (soc_is_omap54xx()) { + wakeupgen_ops = &omap5_wakeupgen_ops; } else if (soc_is_am43xx()) { irq_banks = AM43XX_NR_REG_BANKS; max_irqs = AM43XX_IRQS; + wakeupgen_ops = &am43xx_wakeupgen_ops; } domain = irq_domain_add_hierarchy(parent_domain, 0, max_irqs, |