diff options
| author | Petlozu Pravareshwar <petlozup@nvidia.com> | 2022-10-02 17:44:09 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2022-11-10 04:55:23 +0300 |
| commit | 0474cc8489bda9a8cd6a10252e7e6af29c849438 (patch) | |
| tree | ed9a1cdbec9734ce4f6998d0c85a7fe1d7cd30d7 /drivers/soc/tegra | |
| parent | 1ddb8f6d44ff482c9953a06f800453bc372cfead (diff) | |
| download | linux-0474cc8489bda9a8cd6a10252e7e6af29c849438.tar.xz | |
soc/tegra: pmc: Process wake events during resume
During system resume, translate tier2 SC7 wake sources back into IRQs
and do generic_handle_irq() to invoke the interrupt handlers for edge
triggered wake events such as SW-wake.
Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Signed-off-by: Petlozu Pravareshwar <petlozup@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/soc/tegra')
| -rw-r--r-- | drivers/soc/tegra/pmc.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 767f33303617..cf4cfbf9f7c5 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -23,6 +23,7 @@ #include <linux/err.h> #include <linux/export.h> #include <linux/init.h> +#include <linux/interrupt.h> #include <linux/io.h> #include <linux/iopoll.h> #include <linux/irqdomain.h> @@ -3147,6 +3148,45 @@ static void wke_clear_wake_status(struct tegra_pmc *pmc) } } +/* translate sc7 wake sources back into IRQs to catch edge triggered wakeups */ +static void tegra186_pmc_process_wake_events(struct tegra_pmc *pmc, unsigned int index, + unsigned long status) +{ + unsigned int wake; + + dev_dbg(pmc->dev, "Wake[%d:%d] status=%#lx\n", (index * 32) + 31, index * 32, status); + + for_each_set_bit(wake, &status, 32) { + irq_hw_number_t hwirq = wake + 32 * index; + struct irq_desc *desc; + unsigned int irq; + + irq = irq_find_mapping(pmc->domain, hwirq); + + desc = irq_to_desc(irq); + if (!desc || !desc->action || !desc->action->name) { + dev_dbg(pmc->dev, "Resume caused by WAKE%ld, IRQ %d\n", hwirq, irq); + continue; + } + + dev_dbg(pmc->dev, "Resume caused by WAKE%ld, %s\n", hwirq, desc->action->name); + generic_handle_irq(irq); + } +} + +static void tegra186_pmc_wake_syscore_resume(void) +{ + u32 status, mask; + unsigned int i; + + for (i = 0; i < pmc->soc->max_wake_vectors; i++) { + mask = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(i)); + status = readl(pmc->wake + WAKE_AOWAKE_STATUS_R(i)) & mask; + + tegra186_pmc_process_wake_events(pmc, i, status); + } +} + static int tegra186_pmc_wake_syscore_suspend(void) { wke_read_sw_wake_status(pmc); @@ -3812,6 +3852,7 @@ static const struct tegra_pmc_regs tegra186_pmc_regs = { static void tegra186_pmc_init(struct tegra_pmc *pmc) { pmc->syscore.suspend = tegra186_pmc_wake_syscore_suspend; + pmc->syscore.resume = tegra186_pmc_wake_syscore_resume; register_syscore_ops(&pmc->syscore); } |