[PATCH V1 01/12] irqchip: tegra: do not disable COP IRQ during suspend

Sowjanya Komatineni
2019-05-21T23:32:10Z

BPMP-lite still need IRQ function to finish SC7 suspend sequence for
Tegra210.

This patch has fix for leaving the COP IRQ enabled for Tegra210 during
interrupt controller suspend operation.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
drivers/irqchip/irq-tegra.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-tegra.c b/drivers/irqchip/irq-tegra.c
index 0abc0cd1c32e..1882373fa1fd 100644
--- a/drivers/irqchip/irq-tegra.c
+++ b/drivers/irqchip/irq-tegra.c
@@ -53,18 +53,24 @@ static unsigned int num_ictlrs;

struct tegra_ictlr_soc {
unsigned int num_ictlrs;
+ bool has_bpmpl;
};

+static const struct tegra_ictlr_soc *soc;
+
static const struct tegra_ictlr_soc tegra20_ictlr_soc = {
.num_ictlrs = 4,
+ .has_bpmpl = false,
};

static const struct tegra_ictlr_soc tegra30_ictlr_soc = {
.num_ictlrs = 5,
+ .has_bpmpl = false,
};

static const struct tegra_ictlr_soc tegra210_ictlr_soc = {
.num_ictlrs = 6,
+ .has_bpmpl = true,
};

static const struct of_device_id ictlr_matches[] = {
@@ -157,7 +163,8 @@ static int tegra_ictlr_suspend(void)
lic->cop_iep[i] = readl_relaxed(ictlr + ICTLR_COP_IEP_CLASS);

/* Disable COP interrupts */
- writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
+ if (!soc->has_bpmpl)
+ writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);

/* Disable CPU interrupts */
writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR);
@@ -286,7 +293,6 @@ static int __init tegra_ictlr_init(struct device_node *node,
{
struct irq_domain *parent_domain, *domain;
const struct of_device_id *match;
- const struct tegra_ictlr_soc *soc;
unsigned int i;
int err;

--
2.7.4