From: "Andreas Färber" <afaerber@suse.de>
To: linux-realtek-soc@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, "Andreas Färber" <afaerber@suse.de>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Jason Cooper" <jason@lakedaemon.net>,
"Marc Zyngier" <maz@kernel.org>
Subject: [PATCH v5 3/9] irqchip: rtd1195-mux: Implement irq_get_irqchip_state
Date: Thu, 21 Nov 2019 06:02:02 +0100 [thread overview]
Message-ID: <20191121050208.11324-4-afaerber@suse.de> (raw)
In-Reply-To: <20191121050208.11324-1-afaerber@suse.de>
Implement the .irq_get_irqchip_state callback to retrieve pending,
active and masked interrupt status.
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
v5: New
drivers/irqchip/irq-rtd1195-mux.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/drivers/irqchip/irq-rtd1195-mux.c b/drivers/irqchip/irq-rtd1195-mux.c
index 0e86973aafca..2f1bcfd9d5d6 100644
--- a/drivers/irqchip/irq-rtd1195-mux.c
+++ b/drivers/irqchip/irq-rtd1195-mux.c
@@ -7,6 +7,7 @@
#include <linux/bitops.h>
#include <linux/io.h>
+#include <linux/interrupt.h>
#include <linux/irqchip.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/irqdomain.h>
@@ -96,10 +97,45 @@ static void rtd1195_mux_unmask_irq(struct irq_data *data)
raw_spin_unlock_irqrestore(&mux->lock, flags);
}
+static int rtd1195_mux_get_irqchip_state(struct irq_data *data,
+ enum irqchip_irq_state which, bool *state)
+{
+ struct rtd1195_irq_mux_data *mux = irq_data_get_irq_chip_data(data);
+ u32 val;
+
+ switch (which) {
+ case IRQCHIP_STATE_PENDING:
+ /*
+ * UMSK_ISR provides the unmasked pending interrupts,
+ * except UART and I2C.
+ */
+ val = readl_relaxed(mux->reg_umsk_isr);
+ *state = !!(val & BIT(data->hwirq));
+ break;
+ case IRQCHIP_STATE_ACTIVE:
+ /*
+ * ISR provides the masked pending interrupts,
+ * including UART and I2C.
+ */
+ val = readl_relaxed(mux->reg_isr);
+ *state = !!(val & BIT(data->hwirq));
+ break;
+ case IRQCHIP_STATE_MASKED:
+ val = mux->info->isr_to_int_en_mask[data->hwirq];
+ *state = !(mux->scpu_int_en & val);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static const struct irq_chip rtd1195_mux_irq_chip = {
.irq_ack = rtd1195_mux_ack_irq,
.irq_mask = rtd1195_mux_mask_irq,
.irq_unmask = rtd1195_mux_unmask_irq,
+ .irq_get_irqchip_state = rtd1195_mux_get_irqchip_state,
};
static int rtd1195_mux_irq_domain_map(struct irq_domain *d,
--
2.16.4
next prev parent reply other threads:[~2019-11-21 5:02 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-21 5:01 [PATCH v5 0/9] ARM: Realtek RTD1195/RTD1295/RTD1395 IRQ mux Andreas Färber
2019-11-21 5:02 ` [PATCH v5 1/9] dt-bindings: interrupt-controller: Add Realtek RTD1195/RTD1295 mux Andreas Färber
2019-11-21 5:02 ` [PATCH v5 2/9] irqchip: Add Realtek RTD1295 mux driver Andreas Färber
2019-11-21 5:02 ` Andreas Färber [this message]
2019-12-12 13:48 ` [PATCH v5 3/9] irqchip: rtd1195-mux: Implement irq_get_irqchip_state Marc Zyngier
2019-11-21 5:02 ` [PATCH v5 4/9] arm64: dts: realtek: rtd129x: Add irq muxes and UART interrupts Andreas Färber
2019-11-21 5:02 ` [PATCH v5 5/9] irqchip: rtd1195-mux: Add RTD1195 definitions Andreas Färber
2019-11-21 5:02 ` [PATCH v5 6/9] ARM: dts: rtd1195: Add irq muxes and UART interrupts Andreas Färber
2019-11-21 5:02 ` [PATCH v5 7/9] dt-bindings: interrupt-controller: rtd1195-mux: Add RTD1395 Andreas Färber
2019-11-22 23:34 ` Rob Herring
2019-11-21 5:02 ` [PATCH v5 8/9] irqchip: rtd1195-mux: Add RTD1395 definitions Andreas Färber
2019-11-21 5:02 ` [PATCH v5 9/9] arm64: dts: realtek: rtd139x: Add irq muxes and UART interrupts Andreas Färber
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