Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
authored by
Petlozu Pravareshwar
and committed by
Thierry Reding
0474cc84
1ddb8f6d
+41
+41
drivers/soc/tegra/pmc.c
+41
drivers/soc/tegra/pmc.c
···
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#include <linux/err.h>
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#include <linux/export.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/iopoll.h>
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#include <linux/irqdomain.h>
···
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}
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}
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/* translate sc7 wake sources back into IRQs to catch edge triggered wakeups */
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static void tegra186_pmc_process_wake_events(struct tegra_pmc *pmc, unsigned int index,
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unsigned long status)
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{
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unsigned int wake;
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dev_dbg(pmc->dev, "Wake[%d:%d] status=%#lx\n", (index * 32) + 31, index * 32, status);
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for_each_set_bit(wake, &status, 32) {
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irq_hw_number_t hwirq = wake + 32 * index;
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struct irq_desc *desc;
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unsigned int irq;
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irq = irq_find_mapping(pmc->domain, hwirq);
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desc = irq_to_desc(irq);
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if (!desc || !desc->action || !desc->action->name) {
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dev_dbg(pmc->dev, "Resume caused by WAKE%ld, IRQ %d\n", hwirq, irq);
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continue;
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}
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dev_dbg(pmc->dev, "Resume caused by WAKE%ld, %s\n", hwirq, desc->action->name);
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generic_handle_irq(irq);
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}
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}
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static void tegra186_pmc_wake_syscore_resume(void)
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{
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u32 status, mask;
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unsigned int i;
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for (i = 0; i < pmc->soc->max_wake_vectors; i++) {
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mask = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(i));
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status = readl(pmc->wake + WAKE_AOWAKE_STATUS_R(i)) & mask;
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tegra186_pmc_process_wake_events(pmc, i, status);
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}
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}
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static int tegra186_pmc_wake_syscore_suspend(void)
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{
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wke_read_sw_wake_status(pmc);
···
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static void tegra186_pmc_init(struct tegra_pmc *pmc)
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{
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pmc->syscore.suspend = tegra186_pmc_wake_syscore_suspend;
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pmc->syscore.resume = tegra186_pmc_wake_syscore_resume;
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register_syscore_ops(&pmc->syscore);
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}