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authorArnd Bergmann <arnd@arndb.de>2020-03-25 22:52:42 +0300
committerArnd Bergmann <arnd@arndb.de>2020-03-25 22:52:42 +0300
commitf40969fb563fb7f29451591c56d14b189221701a (patch)
tree89daa897c6671bf378208fd4172c954d82d4b80f /drivers/soc
parent6480e7b38d39a9a5893be93ec866bb5afbcfdfb5 (diff)
parent73321b5f4dafc0a0e7389174ba7eaf558291a188 (diff)
downloadlinux-f40969fb563fb7f29451591c56d14b189221701a.tar.xz
Merge tag 'omap-for-v5.7/pm33xx-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/soc
PM changes for am335x and am437x for v5.7 merge window A series of changes from Dave Gerlach to enable basic cpuidle support for am335x and am437x based on generic cpuidle-arm driver. * tag 'omap-for-v5.7/pm33xx-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: omap2plus_defconfig: Add CONFIG_ARM_CPUIDLE soc: ti: pm33xx: Add base cpuidle support ARM: OMAP2+: pm33xx-core: Extend platform_data ops for cpuidle ARM: OMAP2+: pm33xx-core: Add cpuidle_ops for am335x/am437x dt-bindings: arm: cpu: Add TI AM335x and AM437x enable method Link: https://lore.kernel.org/r/pull-1583511417-919838@atomide.com-2 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/soc')
-rw-r--r--drivers/soc/ti/pm33xx.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c
index ccc6d53fe788..de0123ec8ad6 100644
--- a/drivers/soc/ti/pm33xx.c
+++ b/drivers/soc/ti/pm33xx.c
@@ -130,6 +130,19 @@ static int am33xx_push_sram_idle(void)
return 0;
}
+static int am33xx_do_sram_idle(u32 wfi_flags)
+{
+ int ret = 0;
+
+ if (!m3_ipc || !pm_ops)
+ return 0;
+
+ if (wfi_flags & WFI_FLAG_WAKE_M3)
+ ret = m3_ipc->ops->prepare_low_power(m3_ipc, WKUP_M3_IDLE);
+
+ return pm_ops->cpu_suspend(am33xx_do_wfi_sram, wfi_flags);
+}
+
static int __init am43xx_map_gic(void)
{
gic_dist_base = ioremap(AM43XX_GIC_DIST_BASE, SZ_4K);
@@ -260,6 +273,8 @@ static int am33xx_pm_begin(suspend_state_t state)
rtc_only_idle = 0;
}
+ pm_ops->begin_suspend();
+
switch (state) {
case PM_SUSPEND_MEM:
ret = m3_ipc->ops->prepare_low_power(m3_ipc, WKUP_M3_DEEPSLEEP);
@@ -301,6 +316,8 @@ static void am33xx_pm_end(void)
}
rtc_only_idle = 0;
+
+ pm_ops->finish_suspend();
}
static int am33xx_pm_valid(suspend_state_t state)
@@ -503,7 +520,7 @@ static int am33xx_pm_probe(struct platform_device *pdev)
suspend_wfi_flags |= WFI_FLAG_WAKE_M3;
#endif /* CONFIG_SUSPEND */
- ret = pm_ops->init();
+ ret = pm_ops->init(am33xx_do_sram_idle);
if (ret) {
dev_err(dev, "Unable to call core pm init!\n");
ret = -ENODEV;
@@ -522,6 +539,8 @@ err_free_sram:
static int am33xx_pm_remove(struct platform_device *pdev)
{
+ if (pm_ops->deinit)
+ pm_ops->deinit();
suspend_set_ops(NULL);
wkup_m3_ipc_put(m3_ipc);
am33xx_pm_free_sram();