From: Paul Cercueil <paul@crapouillou.net>
To: Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@codeaurora.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <marc.zyngier@arm.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Lee Jones <lee.jones@linaro.org>
Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, Paul Cercueil <paul@crapouillou.net>
Subject: [PATCH 3/6] irqchip: Add the ingenic-tcu-intc driver
Date: Fri, 29 Dec 2017 13:59:39 +0100 [thread overview]
Message-ID: <20171229125942.27305-4-paul@crapouillou.net> (raw)
In-Reply-To: <20171229125942.27305-1-paul@crapouillou.net>
This simple driver handles the IRQ chip of the TCU
(Timer Counter Unit) of the JZ47xx Ingenic SoCs.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
.../bindings/interrupt-controller/ingenic,tcu.txt | 32 +++++
drivers/irqchip/Kconfig | 5 +
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-ingenic-tcu.c | 156 +++++++++++++++++++++
4 files changed, 194 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt
create mode 100644 drivers/irqchip/irq-ingenic-tcu.c
diff --git a/Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt b/Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt
new file mode 100644
index 000000000000..a3e6318f8461
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt
@@ -0,0 +1,32 @@
+Ingenic SoCs Timer/Counter Unit Interrupt Controller
+
+Required properties:
+
+- compatible : should be "ingenic,<socname>-tcu-intc". Valid strings are:
+ * ingenic,jz4740-tcu-intc
+ * ingenic,jz4770-tcu-intc
+ * ingenic,jz4780-tcu-intc
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Specifies the number of cells needed to encode an
+ interrupt source. The value shall be 1.
+- interrupt-parent : phandle of the interrupt controller.
+- interrupts : Specifies the interrupt the controller is connected to.
+
+Example:
+
+/ {
+ regmap {
+ compatible = "simple-mfd", "syscon";
+ reg = <0x10002000 0x1000>;
+
+ tcu: interrupt-controller {
+ compatible = "ingenic,jz4740-tcu-intc";
+
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <15>;
+ };
+ };
+};
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index c70476b34a53..d3d0ce7c554a 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -267,6 +267,11 @@ config INGENIC_IRQ
depends on MACH_INGENIC
default y
+config INGENIC_TCU_IRQ
+ bool
+ depends on MACH_INGENIC || COMPILE_TEST
+ default y
+
config RENESAS_H8300H_INTC
bool
select IRQ_DOMAIN
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index d2df34a54d38..b8070ee21d8a 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -70,6 +70,7 @@ obj-$(CONFIG_RENESAS_H8300H_INTC) += irq-renesas-h8300h.o
obj-$(CONFIG_RENESAS_H8S_INTC) += irq-renesas-h8s.o
obj-$(CONFIG_ARCH_SA1100) += irq-sa11x0.o
obj-$(CONFIG_INGENIC_IRQ) += irq-ingenic.o
+obj-$(CONFIG_INGENIC_TCU_IRQ) += irq-ingenic-tcu.o
obj-$(CONFIG_IMX_GPCV2) += irq-imx-gpcv2.o
obj-$(CONFIG_PIC32_EVIC) += irq-pic32-evic.o
obj-$(CONFIG_MVEBU_GICP) += irq-mvebu-gicp.o
diff --git a/drivers/irqchip/irq-ingenic-tcu.c b/drivers/irqchip/irq-ingenic-tcu.c
new file mode 100644
index 000000000000..56630349d253
--- /dev/null
+++ b/drivers/irqchip/irq-ingenic-tcu.c
@@ -0,0 +1,156 @@
+/*
+ * JZ4740 SoC TCU IRQ driver
+ *
+ * Copyright (C) 2016 Paul Cercueil <paul@crapouillou.net>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/bitops.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/syscon/ingenic-tcu.h>
+
+static void ingenic_tcu_intc_cascade(struct irq_desc *desc)
+{
+ struct irq_chip *irq_chip = irq_data_get_irq_chip(&desc->irq_data);
+ struct irq_domain *domain = irq_desc_get_handler_data(desc);
+ struct irq_chip_generic *gc = irq_get_domain_generic_chip(domain, 0);
+ struct regmap *map = gc->private;
+ uint32_t irq_reg, irq_mask;
+ unsigned int i;
+
+ regmap_read(map, REG_TFR, &irq_reg);
+ regmap_read(map, REG_TMR, &irq_mask);
+
+ chained_irq_enter(irq_chip, desc);
+
+ irq_reg &= ~irq_mask;
+
+ for (i = 0; i < 32; i++) {
+ if (irq_reg & BIT(i))
+ generic_handle_irq(irq_linear_revmap(domain, i));
+ }
+
+ chained_irq_exit(irq_chip, desc);
+}
+
+static void ingenic_tcu_gc_unmask_enable_reg(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ struct irq_chip_type *ct = irq_data_get_chip_type(d);
+ struct regmap *map = gc->private;
+ u32 mask = d->mask;
+
+ irq_gc_lock(gc);
+ regmap_write(map, ct->regs.ack, mask);
+ regmap_write(map, ct->regs.enable, mask);
+ *ct->mask_cache |= mask;
+ irq_gc_unlock(gc);
+}
+
+static void ingenic_tcu_gc_mask_disable_reg(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ struct irq_chip_type *ct = irq_data_get_chip_type(d);
+ struct regmap *map = gc->private;
+ u32 mask = d->mask;
+
+ irq_gc_lock(gc);
+ regmap_write(map, ct->regs.disable, mask);
+ *ct->mask_cache &= ~mask;
+ irq_gc_unlock(gc);
+}
+
+static void ingenic_tcu_gc_mask_disable_reg_and_ack(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ struct irq_chip_type *ct = irq_data_get_chip_type(d);
+ struct regmap *map = gc->private;
+ u32 mask = d->mask;
+
+ irq_gc_lock(gc);
+ regmap_write(map, ct->regs.ack, mask);
+ regmap_write(map, ct->regs.disable, mask);
+ irq_gc_unlock(gc);
+}
+
+static int __init ingenic_tcu_intc_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ struct irq_domain *domain;
+ struct irq_chip_generic *gc;
+ struct irq_chip_type *ct;
+ int err, i, num_parent_irqs;
+ unsigned int parent_irqs[3];
+ struct regmap *map;
+
+ num_parent_irqs = of_property_count_elems_of_size(
+ node, "interrupts", 4);
+ if (num_parent_irqs < 0 || num_parent_irqs > ARRAY_SIZE(parent_irqs))
+ return -EINVAL;
+
+ map = syscon_node_to_regmap(node->parent);
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+
+ domain = irq_domain_add_linear(node, 32, &irq_generic_chip_ops, NULL);
+ if (!domain)
+ return -ENOMEM;
+
+ err = irq_alloc_domain_generic_chips(domain, 32, 1, "TCU",
+ handle_level_irq, 0, IRQ_NOPROBE | IRQ_LEVEL, 0);
+ if (err)
+ goto out_domain_remove;
+
+ gc = irq_get_domain_generic_chip(domain, 0);
+ ct = gc->chip_types;
+
+ gc->wake_enabled = IRQ_MSK(32);
+ gc->private = map;
+
+ ct->regs.disable = REG_TMSR;
+ ct->regs.enable = REG_TMCR;
+ ct->regs.ack = REG_TFCR;
+ ct->chip.irq_unmask = ingenic_tcu_gc_unmask_enable_reg;
+ ct->chip.irq_mask = ingenic_tcu_gc_mask_disable_reg;
+ ct->chip.irq_mask_ack = ingenic_tcu_gc_mask_disable_reg_and_ack;
+ ct->chip.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE;
+
+ /* Mask all IRQs by default */
+ regmap_write(map, REG_TMSR, IRQ_MSK(32));
+
+ for (i = 0; i < num_parent_irqs; i++) {
+ parent_irqs[i] = irq_of_parse_and_map(node, i);
+ if (!parent_irqs[i]) {
+ err = -EINVAL;
+ goto out_unmap_irqs;
+ }
+
+ irq_set_chained_handler_and_data(parent_irqs[i],
+ ingenic_tcu_intc_cascade, domain);
+ }
+
+ return 0;
+
+out_unmap_irqs:
+ for (; i > 0; i--)
+ irq_dispose_mapping(parent_irqs[i - 1]);
+out_domain_remove:
+ irq_domain_remove(domain);
+ return err;
+}
+IRQCHIP_DECLARE(jz4740_tcu_intc, "ingenic,jz4740-tcu-intc",
+ ingenic_tcu_intc_of_init);
+IRQCHIP_DECLARE(jz4770_tcu_intc, "ingenic,jz4770-tcu-intc",
+ ingenic_tcu_intc_of_init);
+IRQCHIP_DECLARE(jz4780_tcu_intc, "ingenic,jz4780-tcu-intc",
+ ingenic_tcu_intc_of_init);
--
2.11.0
next prev parent reply other threads:[~2017-12-29 12:59 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-29 12:59 [PATCH 0/6] Ingenic JZ47xx TCU drivers Paul Cercueil
2017-12-29 12:59 ` [PATCH 1/6] mfd: syscon: Add ingenic-tcu.h header Paul Cercueil
2018-01-01 14:33 ` [PATCH v2 " Paul Cercueil
2018-01-01 14:33 ` [PATCH v2 2/6] dt-bindings: ingenic: Add DT bindings for TCU clocks Paul Cercueil
2018-01-03 20:49 ` Rob Herring
2018-01-01 14:33 ` [PATCH v2 3/6] irqchip: Add the ingenic-tcu-intc driver Paul Cercueil
[not found] ` <20180101143344.2099-3-paul-icTtO2rgO2OTuSrc4Mpeew@public.gmane.org>
2018-01-03 20:58 ` Rob Herring
2018-01-03 21:50 ` Paul Cercueil
2018-01-01 14:33 ` [PATCH v2 4/6] clk: ingenic: Add JZ47xx TCU clocks driver Paul Cercueil
2018-01-02 19:13 ` Stephen Boyd
2018-01-02 20:08 ` Paul Cercueil
2018-01-02 22:59 ` Stephen Boyd
2018-01-01 14:33 ` [PATCH v2 5/6] clocksource: Add a new timer-ingenic driver Paul Cercueil
2018-01-03 21:08 ` Rob Herring
2018-01-03 21:56 ` Paul Cercueil
[not found] ` <1515016576.1642.2-nb6JAIIttxhEPksTRSfcJOTW4wlIGRCZ@public.gmane.org>
2018-01-05 23:27 ` Rob Herring
[not found] ` <CAL_Jsq+DQnfX29AOJWMtH9ZB7=neOVwiyZggEuwOmazzVQ6MVg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-01-05 23:48 ` Paul Cercueil
[not found] ` <1515196105.2058.1-nb6JAIIttxhEPksTRSfcJOTW4wlIGRCZ@public.gmane.org>
2018-01-09 1:09 ` Rob Herring
2018-01-01 14:33 ` [PATCH v2 6/6] MAINTAINERS: Add myself as maintainer for Ingenic TCU drivers Paul Cercueil
2018-01-02 15:51 ` [PATCH v2 1/6] mfd: syscon: Add ingenic-tcu.h header Lee Jones
2018-01-10 22:48 ` [PATCH v3 1/9] " Paul Cercueil
2018-01-10 22:48 ` [PATCH v3 3/9] doc: dt-bindings: Add doc for Ingenic TCU IRQ driver Paul Cercueil
[not found] ` <20180110224838.16711-3-paul-icTtO2rgO2OTuSrc4Mpeew@public.gmane.org>
2018-01-19 21:05 ` Rob Herring
2018-01-10 22:48 ` [PATCH v3 4/9] doc: dt-bindings: Add doc for the Ingenic TCU clocks driver Paul Cercueil
[not found] ` <20180110224838.16711-4-paul-icTtO2rgO2OTuSrc4Mpeew@public.gmane.org>
2018-01-19 21:11 ` Rob Herring
2018-01-10 22:48 ` [PATCH v3 5/9] doc: dt-bindings: Add doc for the Ingenic TCU timers driver Paul Cercueil
2018-01-19 21:12 ` Rob Herring
2018-01-10 22:48 ` [PATCH v3 6/9] irqchip: Add the ingenic-tcu-intc driver Paul Cercueil
[not found] ` <20180110224838.16711-6-paul-icTtO2rgO2OTuSrc4Mpeew@public.gmane.org>
2018-01-11 15:38 ` Marc Zyngier
2018-01-11 16:25 ` Paul Cercueil
2018-01-20 13:06 ` Marc Zyngier
2018-01-22 9:26 ` Lee Jones
2018-01-22 9:55 ` Marc Zyngier
[not found] ` <bdae1be4-0ed2-1b7d-8b08-7439ce06e762-5wv7dgnIgG8@public.gmane.org>
2018-01-22 11:46 ` Lee Jones
2018-01-10 22:48 ` [PATCH v3 7/9] clk: ingenic: Add JZ47xx TCU clocks driver Paul Cercueil
[not found] ` <20180110224838.16711-7-paul-icTtO2rgO2OTuSrc4Mpeew@public.gmane.org>
2018-01-27 0:37 ` Stephen Boyd
2018-01-10 22:48 ` [PATCH v3 8/9] clocksource: Add a new timer-ingenic driver Paul Cercueil
[not found] ` <20180110224838.16711-8-paul-icTtO2rgO2OTuSrc4Mpeew@public.gmane.org>
2018-01-11 14:53 ` Rob Herring
[not found] ` <CAL_Jsq+StZS1+qTd9CG1X2_3ay5onMgEmYG9MRUVWs-4K4-EZA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-01-11 16:16 ` Paul Cercueil
2018-01-10 22:48 ` [PATCH v3 9/9] MAINTAINERS: Add myself as maintainer for Ingenic TCU drivers Paul Cercueil
[not found] ` <20180110224838.16711-1-paul-icTtO2rgO2OTuSrc4Mpeew@public.gmane.org>
2018-01-10 22:48 ` [PATCH v3 2/9] dt-bindings: ingenic: Add DT bindings for TCU clocks Paul Cercueil
2018-03-17 23:28 ` [PATCH v4 0/8] Ingenic JZ47xx Timer/Counter Unit drivers Paul Cercueil
2018-03-17 23:28 ` [PATCH v4 1/8] mfd: syscon: Add ingenic-tcu.h header Paul Cercueil
2018-03-17 23:28 ` [PATCH v4 2/8] dt-bindings: ingenic: Add DT bindings for TCU clocks Paul Cercueil
2018-03-19 21:27 ` Stephen Boyd
2018-03-20 7:15 ` Mathieu Malaterre
2018-03-28 15:04 ` [PATCH v4 2/8] dt-bindings: ingenic: Add DT bindings for TCU clocks, Paul Cercueil
2018-03-28 18:35 ` [PATCH v4 2/8] dt-bindings: ingenic: Add DT bindings for TCU clocks Mathieu Malaterre
2018-03-17 23:28 ` [PATCH v4 3/8] doc: Add doc for the Ingenic TCU hardware Paul Cercueil
2018-03-17 23:52 ` Randy Dunlap
2018-03-28 14:59 ` [PATCH v4 3/8] doc: Add doc for the Ingenic TCU hardware, Paul Cercueil
2018-03-17 23:28 ` [PATCH v4 4/8] dt-bindings: Add doc for the Ingenic TCU drivers Paul Cercueil
2018-03-20 8:52 ` Marc Zyngier
2018-03-28 15:09 ` [PATCH v4 4/8] dt-bindings: Add doc for the Ingenic TCU drivers, Paul Cercueil
2018-03-27 14:46 ` [PATCH v4 4/8] dt-bindings: Add doc for the Ingenic TCU drivers Rob Herring
2018-03-28 15:33 ` [PATCH v4 4/8] dt-bindings: Add doc for the Ingenic TCU drivers, Paul Cercueil
2018-03-28 16:28 ` [PATCH v4 4/8] dt-bindings: Add doc for the Ingenic TCU drivers Rob Herring
2018-03-29 15:59 ` Paul Cercueil
2018-03-17 23:28 ` [PATCH v4 5/8] irqchip: Add the ingenic-tcu-intc driver Paul Cercueil
2018-03-17 23:28 ` [PATCH v4 6/8] clk: ingenic: Add JZ47xx TCU clocks driver Paul Cercueil
2018-03-17 23:29 ` [PATCH v4 7/8] clocksource: Add a new timer-ingenic driver Paul Cercueil
2018-03-24 6:26 ` Daniel Lezcano
2018-03-28 15:15 ` [PATCH v4 7/8] clocksource: Add a new timer-ingenic driver, Paul Cercueil
2018-03-28 16:25 ` [PATCH v4 7/8] clocksource: Add a new timer-ingenic driver Daniel Lezcano
2018-03-29 14:52 ` Paul Cercueil
2018-03-31 8:10 ` Daniel Lezcano
2018-03-31 17:46 ` [PATCH v4 7/8] clocksource: Add a new timer-ingenic driver, Paul Cercueil
2018-04-03 9:59 ` [PATCH v4 7/8] clocksource: Add a new timer-ingenic driver Daniel Lezcano
2018-03-17 23:29 ` [PATCH v4 8/8] MAINTAINERS: Add myself as maintainer for Ingenic TCU drivers Paul Cercueil
2018-03-18 22:13 ` [PATCH v4 0/8] Ingenic JZ47xx Timer/Counter Unit drivers Daniel Lezcano
2018-03-28 15:01 ` [PATCH v4 0/8] Ingenic JZ47xx Timer/Counter Unit drivers, Paul Cercueil
2018-03-28 15:10 ` [PATCH v4 0/8] Ingenic JZ47xx Timer/Counter Unit drivers Daniel Lezcano
2018-01-23 9:52 ` [PATCH v3 1/9] mfd: syscon: Add ingenic-tcu.h header Lee Jones
2017-12-29 12:59 ` [PATCH 2/6] dt-bindings: ingenic: Add DT bindings for TCU clocks Paul Cercueil
2017-12-29 12:59 ` Paul Cercueil [this message]
2017-12-29 12:59 ` [PATCH 4/6] clk: ingenic: Add JZ47xx TCU clocks driver Paul Cercueil
2017-12-29 14:02 ` Paul Cercueil
2018-01-01 12:47 ` kbuild test robot
2017-12-29 12:59 ` [PATCH 5/6] clocksource: Add a new timer-ingenic driver Paul Cercueil
2017-12-29 12:59 ` [PATCH 6/6] MAINTAINERS: Add myself as maintainer for Ingenic TCU drivers Paul Cercueil
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