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authorAdrian Schmutzler <freifunk@adrianschmutzler.de>2020-02-08 20:33:30 +0100
committerAdrian Schmutzler <freifunk@adrianschmutzler.de>2020-02-14 14:10:51 +0100
commite7bfda2c243e66a75ff966ba04c28b1590b5d24c (patch)
tree069959b7e6a8cf31b0feb2857a63c7c4c0e3dcbf /target/linux/brcm63xx/patches-4.14/321-irqchip-add-support-for-bcm6345-style-external-inter.patch
parent8fe5ad5d3373cebed4fbc55a7b779721971ce427 (diff)
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brcm63xx: rename target to bcm63xx
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Diffstat (limited to 'target/linux/brcm63xx/patches-4.14/321-irqchip-add-support-for-bcm6345-style-external-inter.patch')
-rw-r--r--target/linux/brcm63xx/patches-4.14/321-irqchip-add-support-for-bcm6345-style-external-inter.patch394
1 files changed, 0 insertions, 394 deletions
diff --git a/target/linux/brcm63xx/patches-4.14/321-irqchip-add-support-for-bcm6345-style-external-inter.patch b/target/linux/brcm63xx/patches-4.14/321-irqchip-add-support-for-bcm6345-style-external-inter.patch
deleted file mode 100644
index b5df0351b1..0000000000
--- a/target/linux/brcm63xx/patches-4.14/321-irqchip-add-support-for-bcm6345-style-external-inter.patch
+++ /dev/null
@@ -1,394 +0,0 @@
-From cf908990d4a8ccdb73ee4484aa8cadad379ca314 Mon Sep 17 00:00:00 2001
-From: Jonas Gorski <jogo@openwrt.org>
-Date: Sun, 30 Nov 2014 14:54:27 +0100
-Subject: [PATCH 2/5] irqchip: add support for bcm6345-style external
- interrupt controller
-
-Signed-off-by: Jonas Gorski <jogo@openwrt.org>
----
- .../interrupt-controller/brcm,bcm6345-ext-intc.txt | 29 ++
- drivers/irqchip/Kconfig | 4 +
- drivers/irqchip/Makefile | 1 +
- drivers/irqchip/irq-bcm6345-ext.c | 287 ++++++++++++++++++++
- include/linux/irqchip/irq-bcm6345-ext.h | 14 +
- 5 files changed, 335 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/interrupt-controller/brcm,bcm6345-ext-intc.txt
- create mode 100644 drivers/irqchip/irq-bcm6345-ext.c
- create mode 100644 include/linux/irqchip/irq-bcm6345-ext.h
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm6345-ext-intc.txt
-@@ -0,0 +1,29 @@
-+Broadcom BCM6345-style external interrupt controller
-+
-+Required properties:
-+
-+- compatible: Should be "brcm,bcm6345-ext-intc" or "brcm,bcm6318-ext-intc".
-+- reg: Specifies the base physical addresses and size of the registers.
-+- interrupt-controller: identifies the node as an interrupt controller.
-+- #interrupt-cells: Specifies the number of cells needed to encode an interrupt
-+ source, Should be 2.
-+- interrupt-parent: Specifies the phandle to the parent interrupt controller
-+ this one is cascaded from.
-+- interrupts: Specifies the interrupt line(s) in the interrupt-parent controller
-+ node, valid values depend on the type of parent interrupt controller.
-+
-+Optional properties:
-+
-+- brcm,field-width: Size of each field (mask, clear, sense, ...) in bits in the
-+ register. Defaults to 4.
-+
-+Example:
-+
-+ext_intc: interrupt-controller@10000018 {
-+ compatible = "brcm,bcm6345-ext-intc";
-+ interrupt-parent = <&periph_intc>;
-+ #interrupt-cells = <2>;
-+ reg = <0x10000018 0x4>;
-+ interrupt-controller;
-+ interrupts = <24>, <25>, <26>, <27>;
-+};
---- a/drivers/irqchip/Kconfig
-+++ b/drivers/irqchip/Kconfig
-@@ -114,6 +114,10 @@ config BRCMSTB_L2_IRQ
- select GENERIC_IRQ_CHIP
- select IRQ_DOMAIN
-
-+config BCM6345_EXT_IRQ
-+ bool
-+ select IRQ_DOMAIN
-+
- config BCM6345_PERIPH_IRQ
- bool
- select IRQ_DOMAIN
---- a/drivers/irqchip/Makefile
-+++ b/drivers/irqchip/Makefile
-@@ -14,6 +14,7 @@ obj-$(CONFIG_ARCH_MMP) += irq-mmp.o
- obj-$(CONFIG_IRQ_MXS) += irq-mxs.o
- obj-$(CONFIG_ARCH_TEGRA) += irq-tegra.o
- obj-$(CONFIG_ARCH_S3C24XX) += irq-s3c24xx.o
-+obj-$(CONFIG_BCM6345_EXT_IRQ) += irq-bcm6345-ext.o
- obj-$(CONFIG_BCM6345_PERIPH_IRQ) += irq-bcm6345-periph.o
- obj-$(CONFIG_DW_APB_ICTL) += irq-dw-apb-ictl.o
- obj-$(CONFIG_METAG) += irq-metag-ext.o
---- /dev/null
-+++ b/drivers/irqchip/irq-bcm6345-ext.c
-@@ -0,0 +1,301 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2014 Jonas Gorski <jogo@openwrt.org>
-+ */
-+
-+#include <linux/ioport.h>
-+#include <linux/irq.h>
-+#include <linux/irqchip.h>
-+#include <linux/irqchip/chained_irq.h>
-+#include <linux/irqchip/irq-bcm6345-ext.h>
-+#include <linux/kernel.h>
-+#include <linux/of.h>
-+#include <linux/of_irq.h>
-+#include <linux/of_address.h>
-+#include <linux/slab.h>
-+#include <linux/spinlock.h>
-+
-+#ifdef CONFIG_BCM63XX
-+#include <asm/mach-bcm63xx/bcm63xx_irq.h>
-+
-+#define VIRQ_BASE IRQ_EXTERNAL_BASE
-+#else
-+#define VIRQ_BASE 0
-+#endif
-+
-+#define MAX_IRQS 4
-+
-+#define EXTIRQ_CFG_SENSE 0
-+#define EXTIRQ_CFG_STAT 1
-+#define EXTIRQ_CFG_CLEAR 2
-+#define EXTIRQ_CFG_MASK 3
-+#define EXTIRQ_CFG_BOTHEDGE 4
-+#define EXTIRQ_CFG_LEVELSENSE 5
-+
-+struct intc_data {
-+ struct irq_chip chip;
-+ struct irq_domain *domain;
-+ raw_spinlock_t lock;
-+
-+ int parent_irq[MAX_IRQS];
-+ void __iomem *reg;
-+ int shift;
-+ unsigned int toggle_clear_on_ack:1;
-+};
-+
-+static void bcm6345_ext_intc_irq_handle(struct irq_desc *desc)
-+{
-+ struct intc_data *data = irq_desc_get_handler_data(desc);
-+ struct irq_chip *chip = irq_desc_get_chip(desc);
-+ unsigned int irq = irq_desc_get_irq(desc);
-+ unsigned int idx;
-+
-+ chained_irq_enter(chip, desc);
-+
-+ for (idx = 0; idx < MAX_IRQS; idx++) {
-+ if (data->parent_irq[idx] != irq)
-+ continue;
-+
-+ generic_handle_irq(irq_find_mapping(data->domain, idx));
-+ }
-+
-+ chained_irq_exit(chip, desc);
-+}
-+
-+static void bcm6345_ext_intc_irq_ack(struct irq_data *data)
-+{
-+ struct intc_data *priv = data->domain->host_data;
-+ irq_hw_number_t hwirq = irqd_to_hwirq(data);
-+ u32 reg;
-+
-+ raw_spin_lock(&priv->lock);
-+ reg = __raw_readl(priv->reg);
-+ __raw_writel(reg | (1 << (hwirq + EXTIRQ_CFG_CLEAR * priv->shift)),
-+ priv->reg);
-+ if (priv->toggle_clear_on_ack)
-+ __raw_writel(reg, priv->reg);
-+ raw_spin_unlock(&priv->lock);
-+}
-+
-+static void bcm6345_ext_intc_irq_mask(struct irq_data *data)
-+{
-+ struct intc_data *priv = data->domain->host_data;
-+ irq_hw_number_t hwirq = irqd_to_hwirq(data);
-+ u32 reg;
-+
-+ raw_spin_lock(&priv->lock);
-+ reg = __raw_readl(priv->reg);
-+ reg &= ~(1 << (hwirq + EXTIRQ_CFG_MASK * priv->shift));
-+ __raw_writel(reg, priv->reg);
-+ raw_spin_unlock(&priv->lock);
-+}
-+
-+static void bcm6345_ext_intc_irq_unmask(struct irq_data *data)
-+{
-+ struct intc_data *priv = data->domain->host_data;
-+ irq_hw_number_t hwirq = irqd_to_hwirq(data);
-+ u32 reg;
-+
-+ raw_spin_lock(&priv->lock);
-+ reg = __raw_readl(priv->reg);
-+ reg |= 1 << (hwirq + EXTIRQ_CFG_MASK * priv->shift);
-+ __raw_writel(reg, priv->reg);
-+ raw_spin_unlock(&priv->lock);
-+}
-+
-+static int bcm6345_ext_intc_set_type(struct irq_data *data,
-+ unsigned int flow_type)
-+{
-+ struct intc_data *priv = data->domain->host_data;
-+ irq_hw_number_t hwirq = irqd_to_hwirq(data);
-+ bool levelsense = 0, sense = 0, bothedge = 0;
-+ u32 reg;
-+
-+ flow_type &= IRQ_TYPE_SENSE_MASK;
-+
-+ if (flow_type == IRQ_TYPE_NONE)
-+ flow_type = IRQ_TYPE_LEVEL_LOW;
-+
-+ switch (flow_type) {
-+ case IRQ_TYPE_EDGE_BOTH:
-+ bothedge = 1;
-+ break;
-+
-+ case IRQ_TYPE_EDGE_RISING:
-+ sense = 1;
-+ break;
-+
-+ case IRQ_TYPE_EDGE_FALLING:
-+ break;
-+
-+ case IRQ_TYPE_LEVEL_HIGH:
-+ levelsense = 1;
-+ sense = 1;
-+ break;
-+
-+ case IRQ_TYPE_LEVEL_LOW:
-+ levelsense = 1;
-+ break;
-+
-+ default:
-+ pr_err("bogus flow type combination given!\n");
-+ return -EINVAL;
-+ }
-+
-+ raw_spin_lock(&priv->lock);
-+ reg = __raw_readl(priv->reg);
-+
-+ if (levelsense)
-+ reg |= 1 << (hwirq + EXTIRQ_CFG_LEVELSENSE * priv->shift);
-+ else
-+ reg &= ~(1 << (hwirq + EXTIRQ_CFG_LEVELSENSE * priv->shift));
-+ if (sense)
-+ reg |= 1 << (hwirq + EXTIRQ_CFG_SENSE * priv->shift);
-+ else
-+ reg &= ~(1 << (hwirq + EXTIRQ_CFG_SENSE * priv->shift));
-+ if (bothedge)
-+ reg |= 1 << (hwirq + EXTIRQ_CFG_BOTHEDGE * priv->shift);
-+ else
-+ reg &= ~(1 << (hwirq + EXTIRQ_CFG_BOTHEDGE * priv->shift));
-+
-+ __raw_writel(reg, priv->reg);
-+ raw_spin_unlock(&priv->lock);
-+
-+ irqd_set_trigger_type(data, flow_type);
-+ if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
-+ irq_set_handler_locked(data, handle_level_irq);
-+ else
-+ irq_set_handler_locked(data, handle_edge_irq);
-+
-+ return 0;
-+}
-+
-+static int bcm6345_ext_intc_map(struct irq_domain *d, unsigned int irq,
-+ irq_hw_number_t hw)
-+{
-+ struct intc_data *priv = d->host_data;
-+
-+ irq_set_chip_and_handler(irq, &priv->chip, handle_level_irq);
-+
-+ return 0;
-+}
-+
-+static const struct irq_domain_ops bcm6345_ext_domain_ops = {
-+ .xlate = irq_domain_xlate_twocell,
-+ .map = bcm6345_ext_intc_map,
-+};
-+
-+static int __init __bcm6345_ext_intc_init(struct device_node *node,
-+ int num_irqs, int *irqs,
-+ void __iomem *reg, int shift,
-+ bool toggle_clear_on_ack)
-+{
-+ struct intc_data *data;
-+ unsigned int i;
-+ int start = VIRQ_BASE;
-+
-+ data = kzalloc(sizeof(*data), GFP_KERNEL);
-+ if (!data)
-+ return -ENOMEM;
-+
-+ raw_spin_lock_init(&data->lock);
-+
-+ for (i = 0; i < num_irqs; i++) {
-+ data->parent_irq[i] = irqs[i];
-+
-+ irq_set_handler_data(irqs[i], data);
-+ irq_set_chained_handler(irqs[i], bcm6345_ext_intc_irq_handle);
-+ }
-+
-+ data->reg = reg;
-+ data->shift = shift;
-+ data->toggle_clear_on_ack = toggle_clear_on_ack;
-+
-+ data->chip.name = "bcm6345-ext-intc";
-+ data->chip.irq_ack = bcm6345_ext_intc_irq_ack;
-+ data->chip.irq_mask = bcm6345_ext_intc_irq_mask;
-+ data->chip.irq_unmask = bcm6345_ext_intc_irq_unmask;
-+ data->chip.irq_set_type = bcm6345_ext_intc_set_type;
-+
-+ /*
-+ * If we have less than 4 irqs, this is the second controller on
-+ * bcm63xx. So increase the VIRQ start to not overlap with the first
-+ * one, but only do so if we actually use a non-zero start.
-+ *
-+ * This can be removed when bcm63xx has no legacy users anymore.
-+ */
-+ if (start && num_irqs < 4)
-+ start += 4;
-+
-+ data->domain = irq_domain_add_simple(node, num_irqs, start,
-+ &bcm6345_ext_domain_ops, data);
-+ if (!data->domain) {
-+ kfree(data);
-+ return -ENOMEM;
-+ }
-+
-+ return 0;
-+}
-+
-+void __init bcm6345_ext_intc_init(int num_irqs, int *irqs, void __iomem *reg,
-+ int shift)
-+{
-+ __bcm6345_ext_intc_init(NULL, num_irqs, irqs, reg, shift, false);
-+}
-+
-+#ifdef CONFIG_OF
-+static int __init bcm6345_ext_intc_of_init(struct device_node *node,
-+ struct device_node *parent)
-+{
-+ int num_irqs, ret = -EINVAL;
-+ unsigned i;
-+ void __iomem *base;
-+ int irqs[MAX_IRQS] = { 0 };
-+ u32 shift;
-+ bool toggle_clear_on_ack = false;
-+
-+ num_irqs = of_irq_count(node);
-+
-+ if (!num_irqs || num_irqs > MAX_IRQS)
-+ return -EINVAL;
-+
-+ if (of_property_read_u32(node, "brcm,field-width", &shift))
-+ shift = 4;
-+
-+ /* on BCM6318 setting CLEAR seems to continuously mask interrupts */
-+ if (of_device_is_compatible(node, "brcm,bcm6318-ext-intc"))
-+ toggle_clear_on_ack = true;
-+
-+ for (i = 0; i < num_irqs; i++) {
-+ irqs[i] = irq_of_parse_and_map(node, i);
-+ if (!irqs[i]) {
-+ ret = -ENOMEM;
-+ goto out_unmap;
-+ }
-+ }
-+
-+ base = of_iomap(node, 0);
-+ if (!base)
-+ goto out_unmap;
-+
-+ ret = __bcm6345_ext_intc_init(node, num_irqs, irqs, base, shift,
-+ toggle_clear_on_ack);
-+ if (!ret)
-+ return 0;
-+out_unmap:
-+ iounmap(base);
-+
-+ for (i = 0; i < num_irqs; i++)
-+ irq_dispose_mapping(irqs[i]);
-+
-+ return ret;
-+}
-+
-+IRQCHIP_DECLARE(bcm6318_ext_intc, "brcm,bcm6318-ext-intc",
-+ bcm6345_ext_intc_of_init);
-+IRQCHIP_DECLARE(bcm6345_ext_intc, "brcm,bcm6345-ext-intc",
-+ bcm6345_ext_intc_of_init);
-+#endif
---- /dev/null
-+++ b/include/linux/irqchip/irq-bcm6345-ext.h
-@@ -0,0 +1,14 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2014 Jonas Gorski <jogo@openwrt.org>
-+ */
-+
-+#ifndef __INCLUDE_LINUX_IRQCHIP_IRQ_BCM6345_EXT_H
-+#define __INCLUDE_LINUX_IRQCHIP_IRQ_BCM6345_EXT_H
-+
-+void bcm6345_ext_intc_init(int n_irqs, int *irqs, void __iomem *reg, int shift);
-+
-+#endif /* __INCLUDE_LINUX_IRQCHIP_IRQ_BCM6345_EXT_H */