spmi: pmic-arb: add support for irq_get_irqchip_state

Reviewed-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Courtney Cavin <courtney.cavin@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Tested-by: Tim Bird <tim.bird@sonymobile.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index d7119db49cfe..a4d8c043a710 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -575,6 +575,22 @@ static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type)
         return 0;
 }
 
+static int qpnpint_get_irqchip_state(struct irq_data *d,
+                                     enum irqchip_irq_state which,
+                                     bool *state)
+{
+        u8 irq = d->hwirq >> 8;
+        u8 status = 0;
+
+        if (which != IRQCHIP_STATE_LINE_LEVEL)
+                return -EINVAL;
+
+        qpnpint_spmi_read(d, QPNPINT_REG_RT_STS, &status, 1);
+        *state = !!(status & BIT(irq));
+
+        return 0;
+}
+
 static struct irq_chip pmic_arb_irqchip = {
         .name           = "pmic_arb",
         .irq_enable     = qpnpint_irq_enable,
@@ -582,6 +598,7 @@ static struct irq_chip pmic_arb_irqchip = {
         .irq_mask       = qpnpint_irq_mask,
         .irq_unmask     = qpnpint_irq_unmask,
         .irq_set_type   = qpnpint_irq_set_type,
+        .irq_get_irqchip_state  = qpnpint_get_irqchip_state,
         .flags          = IRQCHIP_MASK_ON_SUSPEND
                         | IRQCHIP_SKIP_SET_WAKE,
 };