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Groups > linux.kernel > #1433785
| From | Yoshinori Sato <ysato@users.sourceforge.jp> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v4 21/22] sh: Renesas RTS7751R2Dplus (a,k.a R2Dplus) IRQCHIP Driver |
| Date | 2016-06-29 16:10 +0200 |
| Message-ID | <rPolJ-5aS-57@gated-at.bofh.it> (permalink) |
| References | <rPo2m-4Od-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Changes v4
- split patch.
- remove unneeded #address
- update example
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
.../interrupt-controller/renesas-r2dplus.txt | 38 ++++++++++
drivers/irqchip/Makefile | 2 +-
drivers/irqchip/irq-renesas-r2dplus.c | 88 ++++++++++++++++++++++
3 files changed, 127 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas-r2dplus.txt
create mode 100644 drivers/irqchip/irq-renesas-r2dplus.c
diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas-r2dplus.txt b/Documentation/devicetree/bindings/interrupt-controller/renesas-r2dplus.txt
new file mode 100644
index 0000000..5b74da4
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/renesas-r2dplus.txt
@@ -0,0 +1,38 @@
+DT bindings for the Renesas R0P751RLC0011RL (R2Dplus) interrupt controller
+
+Required properties:
+
+ - compatible: has to be "renesas,r2dplus-intc".
+
+ - reg: Base address and length of interrupt controller register.
+
+ - interrupt-controller: Identifies the node as an interrupt controller.
+
+ - #interrupt-cells: has to be <1>: an interrupt index.
+
+ - interrupt-map: Interrupt mapping on parent controller.
+
+Example
+-------
+
+ fpgaintc: fpga@a4000000 {
+ compatible = "renesas,r2dplus-intc";
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ reg = <0xa4000000 0x40>;
+ interrupt-map=<0 &shintc evt2irq(0x200)>,
+ <1 &shintc evt2irq(0x220)>,
+ <2 &shintc evt2irq(0x240)>,
+ <3 &shintc evt2irq(0x260)>,
+ <4 &shintc evt2irq(0x280)>,
+ <5 &shintc evt2irq(0x2a0)>,
+ <6 &shintc evt2irq(0x2c0)>,
+ <7 &shintc evt2irq(0x2e0)>,
+ <8 &shintc evt2irq(0x300)>,
+ <9 &shintc evt2irq(0x320)>,
+ <10 &shintc evt2irq(0x340)>,
+ <11 &shintc evt2irq(0x360)>,
+ <12 &shintc evt2irq(0x380)>,
+ <13 &shintc evt2irq(0x3a0)>,
+ <14 &shintc evt2irq(0x3c0)>,
+ };
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 5e225cf..1e0f1c3 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -69,4 +69,4 @@ obj-$(CONFIG_PIC32_EVIC) += irq-pic32-evic.o
obj-$(CONFIG_MVEBU_ODMI) += irq-mvebu-odmi.o
obj-$(CONFIG_LS_SCFG_MSI) += irq-ls-scfg-msi.o
obj-$(CONFIG_EZNPS_GIC) += irq-eznps.o
-obj-$(CONFIG_RENESAS_SH_INTC) += irq-renesas-sh7751.o irq-io-landisk.o
+obj-$(CONFIG_RENESAS_SH_INTC) += irq-renesas-sh7751.o irq-io-landisk.o irq-renesas-r2dplus.o
diff --git a/drivers/irqchip/irq-renesas-r2dplus.c b/drivers/irqchip/irq-renesas-r2dplus.c
new file mode 100644
index 0000000..3f80775
--- /dev/null
+++ b/drivers/irqchip/irq-renesas-r2dplus.c
@@ -0,0 +1,88 @@
+/*
+ * Renesas RTS7751R2D+ FPGA IRQ driver
+ *
+ * Copyright 2016 Yoshinori Sato <ysato@users.sourceforge.jp>
+ */
+
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+
+static const u16 mask_bit[] = {
+ BIT(11),
+ BIT(9),
+ BIT(8),
+ BIT(12),
+ BIT(10),
+ BIT(6),
+ BIT(5),
+ BIT(4),
+ BIT(7),
+ BIT(14),
+ BIT(13),
+ BIT(0),
+ BIT(15),
+};
+
+static void r2dplus_mask_irq(struct irq_data *data)
+{
+ u16 mask = __raw_readw(data->chip_data);
+
+ mask &= ~mask_bit[data->irq];
+ __raw_writew(mask, data->chip_data);
+}
+
+static void r2dplus_unmask_irq(struct irq_data *data)
+{
+ u16 mask = __raw_readw(data->chip_data);
+
+ mask |= mask_bit[data->irq];
+ __raw_writew(mask, data->chip_data);
+}
+
+static struct irq_chip fpga_irq_chip = {
+ .name = "R2DPLUS-FPGA",
+ .irq_unmask = r2dplus_unmask_irq,
+ .irq_mask = r2dplus_mask_irq,
+};
+
+static int fpga_map(struct irq_domain *d, unsigned int virq,
+ irq_hw_number_t hw_irq_num)
+{
+ irq_set_chip_and_handler(virq, &fpga_irq_chip,
+ handle_simple_irq);
+ irq_set_chip_data(virq, d->host_data);
+
+ return 0;
+}
+
+static struct irq_domain_ops irq_ops = {
+ .xlate = irq_domain_xlate_onecell,
+ .map = fpga_map,
+};
+
+static int __init r2dplus_intc_of_init(struct device_node *intc,
+ struct device_node *parent)
+{
+ struct irq_domain *domain, *pdomain;
+ int num_irqpin;
+ void *baseaddr;
+
+ baseaddr = of_iomap(intc, 0);
+ pdomain = irq_find_host(parent);
+ of_get_property(intc, "interrupt-map", &num_irqpin);
+ num_irqpin /= sizeof(u32) * 3;
+ domain = irq_domain_create_hierarchy(pdomain, 0, num_irqpin,
+ of_node_to_fwnode(intc),
+ &irq_ops, baseaddr);
+ if (!domain)
+ panic("%s: unable to create IRQ domain\n", intc->full_name);
+ irq_domain_associate_many(domain, 0, 0, 16);
+ return 0;
+}
+
+IRQCHIP_DECLARE(cpld_intc, "renesas,r2dplus-intc", r2dplus_intc_of_init);
--
2.7.0
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[PATCH v4 00/22] sh: LANDISK and R2Dplus convert to device tree Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:00 +0200
[PATCH v4 15/22] sh: Move common PCI stuff to arch/sh/kernel Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 04/22] sh: Use P1SEGADDR Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 13/22] sh: irqchip: SH7751 IRQCHIP Driver Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 12/22] sh: Add PCI host bridge driver for SH7751 Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
Re: [PATCH v4 12/22] sh: Add PCI host bridge driver for SH7751 Arnd Bergmann <arnd@arndb.de> - 2016-06-29 17:00 +0200
Re: [PATCH v4 12/22] sh: Add PCI host bridge driver for SH7751 Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-30 17:00 +0200
Re: [PATCH v4 12/22] sh: Add PCI host bridge driver for SH7751 Rob Herring <robh@kernel.org> - 2016-07-01 03:50 +0200
[PATCH v4 07/22] sh: Passing FDT address on zImage Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 18/22] sh: Add separate DTB build rule Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 09/22] sh: Use GENERIC_IOMAP on device tree mode Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 20/22] sh: IO-DATA HDL-U (a,k.a landisk) DeviceTree Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 22/22] sh: Renesas RTS7751R2Dplus (a,k.a R2Dplus) DeviceTree Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
Re: [PATCH v4 22/22] sh: Renesas RTS7751R2Dplus (a,k.a R2Dplus) DeviceTree Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2016-06-29 16:20 +0200
Re: [PATCH v4 22/22] sh: Renesas RTS7751R2Dplus (a,k.a R2Dplus) DeviceTree Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-30 16:50 +0200
[PATCH v4 17/22] pci: PCI_HOST_GENERIC enable for SH Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 05/22] sh: command line passing chosen/bootargs in devicetree Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 16/22] pci: pci_config_window move to linux/pci.h Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 08/22] sh: Disable board specific code on device tree mode Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 14/22] sh: SH7751 core dtsi Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
Re: [PATCH v4 14/22] sh: SH7751 core dtsi Geert Uytterhoeven <geert@linux-m68k.org> - 2016-07-01 11:00 +0200
Re: [PATCH v4 14/22] sh: SH7751 core dtsi Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-07-03 13:40 +0200
Re: [PATCH v4 14/22] sh: SH7751 core dtsi Geert Uytterhoeven <geert@linux-m68k.org> - 2016-07-04 09:20 +0200
Re: [PATCH v4 14/22] sh: SH7751 core dtsi Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-07-04 18:20 +0200
[PATCH v4 03/22] sh: set preset_lpj Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
[PATCH v4 21/22] sh: Renesas RTS7751R2Dplus (a,k.a R2Dplus) IRQCHIP Driver Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
Re: [PATCH v4 21/22] sh: Renesas RTS7751R2Dplus (a,k.a R2Dplus) IRQCHIP Driver Rob Herring <robh@kernel.org> - 2016-07-01 04:10 +0200
Re: [PATCH v4 21/22] sh: Renesas RTS7751R2Dplus (a,k.a R2Dplus) IRQCHIP Driver Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-07-03 13:40 +0200
[PATCH v4 02/22] sh: More early unflatten device tree Yoshinori Sato <ysato@users.sourceforge.jp> - 2016-06-29 16:10 +0200
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