From 74655749a58405e259eaaba66bfc391fdbe1e34e Mon Sep 17 00:00:00 2001 From: Dave Gerlach Date: Mon, 9 Jul 2018 13:03:16 +0530 Subject: ARM: OMAP2+: sleep33/43xx: Make sleep actions configurable Add an argument to the sleep33xx and sleep43xx code to allow us to set flags to determine which portions of the code get called in order to use the same code for multiple power saving modes. This patch allows us to decide whether or not we flush and disable caches, save EMIF context, put the memory into self refresh and disable the EMIF, and/or invoke the wkup_m3 when entering into WFI. Signed-off-by: Dave Gerlach Signed-off-by: Tero Kristo Signed-off-by: Keerthy Signed-off-by: Tony Lindgren --- drivers/soc/ti/pm33xx.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'drivers/soc') diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c index 652739c7f718..0011c8f5ecd7 100644 --- a/drivers/soc/ti/pm33xx.c +++ b/drivers/soc/ti/pm33xx.c @@ -41,6 +41,8 @@ static struct am33xx_pm_sram_addr *pm_sram; static struct device *pm33xx_dev; static struct wkup_m3_ipc *m3_ipc; +static unsigned long suspend_wfi_flags; + static u32 sram_suspend_address(unsigned long addr) { return ((unsigned long)am33xx_do_wfi_sram + @@ -53,7 +55,7 @@ static int am33xx_pm_suspend(suspend_state_t suspend_state) int i, ret = 0; ret = pm_ops->soc_suspend((unsigned long)suspend_state, - am33xx_do_wfi_sram); + am33xx_do_wfi_sram, suspend_wfi_flags); if (ret) { dev_err(pm33xx_dev, "PM: Kernel suspend failure\n"); @@ -310,6 +312,17 @@ static int am33xx_pm_probe(struct platform_device *pdev) suspend_set_ops(&am33xx_pm_ops); #endif /* CONFIG_SUSPEND */ + /* + * For a system suspend we must flush the caches, we want + * the DDR in self-refresh, we want to save the context + * of the EMIF, and we want the wkup_m3 to handle low-power + * transition. + */ + suspend_wfi_flags |= WFI_FLAG_FLUSH_CACHE; + suspend_wfi_flags |= WFI_FLAG_SELF_REFRESH; + suspend_wfi_flags |= WFI_FLAG_SAVE_EMIF; + suspend_wfi_flags |= WFI_FLAG_WAKE_M3; + ret = pm_ops->init(); if (ret) { dev_err(dev, "Unable to call core pm init!\n"); -- cgit From 8c5a916f4c8815196cc8a86b9582ca89422aac25 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Mon, 9 Jul 2018 13:03:17 +0530 Subject: ARM: OMAP2+: sleep33/43xx: Add RTC-Mode support Add support for RTC mode to low level suspend code. This includes providing the rtc base address for the assembly code to configuring the PMIC_PWR_EN line late in suspend to enter RTC+DDR mode. Note: This patch also fold in left out space parameter for am33xx_emif_sram_table and am43xx_emif_sram_table Signed-off-by: Dave Gerlach Signed-off-by: Keerthy Signed-off-by: Tony Lindgren --- drivers/soc/ti/pm33xx.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/soc') diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c index 0011c8f5ecd7..d0dab323651f 100644 --- a/drivers/soc/ti/pm33xx.c +++ b/drivers/soc/ti/pm33xx.c @@ -229,6 +229,7 @@ static int am33xx_push_sram_idle(void) ro_sram_data.amx3_pm_sram_data_virt = ocmcram_location_data; ro_sram_data.amx3_pm_sram_data_phys = gen_pool_virt_to_phys(sram_pool_data, ocmcram_location_data); + ro_sram_data.rtc_base_virt = pm_ops->get_rtc_base_addr(); /* Save physical address to calculate resume offset during pm init */ am33xx_do_wfi_sram_phys = gen_pool_virt_to_phys(sram_pool, -- cgit