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authorThomas Gleixner <tglx@linutronix.de>2018-12-18 20:37:27 +0300
committerThomas Gleixner <tglx@linutronix.de>2018-12-18 20:37:27 +0300
commitff3730a497cd636e53d4cac5cbb9652b76de9ef5 (patch)
treea25b8f0759cfdb044474a2d88707fe5e3ac491c0 /drivers/irqchip
parentc5f48c0a7aa1a8c82d81cdf27e63aa0a5544c6e6 (diff)
parentfb94109b764e7676fa63834b9033ba97175877a0 (diff)
downloadlinux-ff3730a497cd636e53d4cac5cbb9652b76de9ef5.tar.xz
Merge tag 'irqchip-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier: - A bunch of new irqchip drivers (RDA8810PL, Madera, imx-irqsteer) - Updates for new (and old) platforms (i.MX8MQ, F1C100s) - A number of SPDX cleanups - A workaround for a very broken GICv3 implementation - A platform-msi fix - Various cleanups
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/Kconfig15
-rw-r--r--drivers/irqchip/Makefile3
-rw-r--r--drivers/irqchip/irq-bcm2835.c11
-rw-r--r--drivers/irqchip/irq-bcm2836.c11
-rw-r--r--drivers/irqchip/irq-gic-common.c12
-rw-r--r--drivers/irqchip/irq-gic-common.h3
-rw-r--r--drivers/irqchip/irq-gic-v3.c27
-rw-r--r--drivers/irqchip/irq-imx-gpcv2.c65
-rw-r--r--drivers/irqchip/irq-imx-irqsteer.c261
-rw-r--r--drivers/irqchip/irq-madera.c256
-rw-r--r--drivers/irqchip/irq-mscc-ocelot.c6
-rw-r--r--drivers/irqchip/irq-rda-intc.c107
-rw-r--r--drivers/irqchip/irq-renesas-intc-irqpin.c14
-rw-r--r--drivers/irqchip/irq-renesas-irqc.c14
-rw-r--r--drivers/irqchip/irq-stm32-exti.c122
-rw-r--r--drivers/irqchip/irq-sun4i.c106
-rw-r--r--drivers/irqchip/irq-tango.c10
17 files changed, 923 insertions, 120 deletions
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 51a5ef0e96ed..3d1e60779078 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -150,6 +150,9 @@ config IMGPDC_IRQ
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
+config MADERA_IRQ
+ tristate
+
config IRQ_MIPS_CPU
bool
select GENERIC_IRQ_CHIP
@@ -195,6 +198,10 @@ config JCORE_AIC
help
Support for the J-Core integrated AIC.
+config RDA_INTC
+ bool
+ select IRQ_DOMAIN
+
config RENESAS_INTC_IRQPIN
bool
select IRQ_DOMAIN
@@ -391,6 +398,14 @@ config CSKY_APB_INTC
by C-SKY single core SOC system. It use mmio map apb-bus to visit
the controller's register.
+config IMX_IRQSTEER
+ bool "i.MX IRQSTEER support"
+ depends on ARCH_MXC || COMPILE_TEST
+ default ARCH_MXC
+ select IRQ_DOMAIN
+ help
+ Support for the i.MX IRQSTEER interrupt multiplexer/remapper.
+
endmenu
config SIFIVE_PLIC
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 794c13d3ac3d..c93713d24b86 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -43,6 +43,7 @@ obj-$(CONFIG_IMGPDC_IRQ) += irq-imgpdc.o
obj-$(CONFIG_IRQ_MIPS_CPU) += irq-mips-cpu.o
obj-$(CONFIG_SIRF_IRQ) += irq-sirfsoc.o
obj-$(CONFIG_JCORE_AIC) += irq-jcore-aic.o
+obj-$(CONFIG_RDA_INTC) += irq-rda-intc.o
obj-$(CONFIG_RENESAS_INTC_IRQPIN) += irq-renesas-intc-irqpin.o
obj-$(CONFIG_RENESAS_IRQC) += irq-renesas-irqc.o
obj-$(CONFIG_VERSATILE_FPGA_IRQ) += irq-versatile-fpga.o
@@ -91,3 +92,5 @@ obj-$(CONFIG_QCOM_PDC) += qcom-pdc.o
obj-$(CONFIG_CSKY_MPINTC) += irq-csky-mpintc.o
obj-$(CONFIG_CSKY_APB_INTC) += irq-csky-apb-intc.o
obj-$(CONFIG_SIFIVE_PLIC) += irq-sifive-plic.o
+obj-$(CONFIG_IMX_IRQSTEER) += irq-imx-irqsteer.o
+obj-$(CONFIG_MADERA_IRQ) += irq-madera.o
diff --git a/drivers/irqchip/irq-bcm2835.c b/drivers/irqchip/irq-bcm2835.c
index d2da8a1e6b1b..418245d31921 100644
--- a/drivers/irqchip/irq-bcm2835.c
+++ b/drivers/irqchip/irq-bcm2835.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2010 Broadcom
* Copyright 2012 Simon Arlott, Chris Boot, Stephen Warren
*
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
* Quirk 1: Shortcut interrupts don't set the bank 1/2 register pending bits
*
* If an interrupt fires on bank 1 that isn't in the shortcuts list, bit 8
diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c
index dfe4a460340b..2038693f074c 100644
--- a/drivers/irqchip/irq-bcm2836.c
+++ b/drivers/irqchip/irq-bcm2836.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Root interrupt controller for the BCM2836 (Raspberry Pi 2).
*
* Copyright 2015 Broadcom
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/cpu.h>
diff --git a/drivers/irqchip/irq-gic-common.c b/drivers/irqchip/irq-gic-common.c
index 01e673c680cd..3c93c6f4d1f1 100644
--- a/drivers/irqchip/irq-gic-common.c
+++ b/drivers/irqchip/irq-gic-common.c
@@ -36,6 +36,18 @@ void gic_set_kvm_info(const struct gic_kvm_info *info)
gic_kvm_info = info;
}
+void gic_enable_of_quirks(const struct device_node *np,
+ const struct gic_quirk *quirks, void *data)
+{
+ for (; quirks->desc; quirks++) {
+ if (!of_device_is_compatible(np, quirks->compatible))
+ continue;
+ if (quirks->init(data))
+ pr_info("GIC: enabling workaround for %s\n",
+ quirks->desc);
+ }
+}
+
void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
void *data)
{
diff --git a/drivers/irqchip/irq-gic-common.h b/drivers/irqchip/irq-gic-common.h
index 3919cd7c5285..97e58fb6c232 100644
--- a/drivers/irqchip/irq-gic-common.h
+++ b/drivers/irqchip/irq-gic-common.h
@@ -23,6 +23,7 @@
struct gic_quirk {
const char *desc;
+ const char *compatible;
bool (*init)(void *data);
u32 iidr;
u32 mask;
@@ -35,6 +36,8 @@ void gic_dist_config(void __iomem *base, int gic_irqs,
void gic_cpu_config(void __iomem *base, void (*sync_access)(void));
void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
void *data);
+void gic_enable_of_quirks(const struct device_node *np,
+ const struct gic_quirk *quirks, void *data);
void gic_set_kvm_info(const struct gic_kvm_info *info);
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 8f87f40c9460..d3d4f65b377b 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -41,6 +41,8 @@
#include "irq-gic-common.h"
+#define FLAGS_WORKAROUND_GICR_WAKER_MSM8996 (1ULL << 0)
+
struct redist_region {
void __iomem *redist_base;
phys_addr_t phys_base;
@@ -55,6 +57,7 @@ struct gic_chip_data {
struct irq_domain *domain;
u64 redist_stride;
u32 nr_redist_regions;
+ u64 flags;
bool has_rss;
unsigned int irq_nr;
struct partition_desc *ppi_descs[16];
@@ -139,6 +142,9 @@ static void gic_enable_redist(bool enable)
u32 count = 1000000; /* 1s! */
u32 val;
+ if (gic_data.flags & FLAGS_WORKAROUND_GICR_WAKER_MSM8996)
+ return;
+
rbase = gic_data_rdist_rd_base();
val = readl_relaxed(rbase + GICR_WAKER);
@@ -1067,6 +1073,15 @@ static const struct irq_domain_ops partition_domain_ops = {
.select = gic_irq_domain_select,
};
+static bool gic_enable_quirk_msm8996(void *data)
+{
+ struct gic_chip_data *d = data;
+
+ d->flags |= FLAGS_WORKAROUND_GICR_WAKER_MSM8996;
+
+ return true;
+}
+
static int __init gic_init_bases(void __iomem *dist_base,
struct redist_region *rdist_regs,
u32 nr_redist_regions,
@@ -1271,6 +1286,16 @@ static void __init gic_of_setup_kvm_info(struct device_node *node)
gic_set_kvm_info(&gic_v3_kvm_info);
}
+static const struct gic_quirk gic_quirks[] = {
+ {
+ .desc = "GICv3: Qualcomm MSM8996 broken firmware",
+ .compatible = "qcom,msm8996-gic-v3",
+ .init = gic_enable_quirk_msm8996,
+ },
+ {
+ }
+};
+
static int __init gic_of_init(struct device_node *node, struct device_node *parent)
{
void __iomem *dist_base;
@@ -1318,6 +1343,8 @@ static int __init gic_of_init(struct device_node *node, struct device_node *pare
if (of_property_read_u64(node, "redistributor-stride", &redist_stride))
redist_stride = 0;
+ gic_enable_of_quirks(node, gic_quirks, &gic_data);
+
err = gic_init_bases(dist_base, rdist_regs, nr_redist_regions,
redist_stride, &node->fwnode);
if (err)
diff --git a/drivers/irqchip/irq-imx-gpcv2.c b/drivers/irqchip/irq-imx-gpcv2.c
index 4760307ab43f..66501ea4fd75 100644
--- a/drivers/irqchip/irq-imx-gpcv2.c
+++ b/drivers/irqchip/irq-imx-gpcv2.c
@@ -17,6 +17,9 @@
#define GPC_IMR1_CORE0 0x30
#define GPC_IMR1_CORE1 0x40
+#define GPC_IMR1_CORE2 0x1c0
+#define GPC_IMR1_CORE3 0x1d0
+
struct gpcv2_irqchip_data {
struct raw_spinlock rlock;
@@ -28,6 +31,11 @@ struct gpcv2_irqchip_data {
static struct gpcv2_irqchip_data *imx_gpcv2_instance;
+static void __iomem *gpcv2_idx_to_reg(struct gpcv2_irqchip_data *cd, int i)
+{
+ return cd->gpc_base + cd->cpu2wakeup + i * 4;
+}
+
static int gpcv2_wakeup_source_save(void)
{
struct gpcv2_irqchip_data *cd;
@@ -39,7 +47,7 @@ static int gpcv2_wakeup_source_save(void)
return 0;
for (i = 0; i < IMR_NUM; i++) {
- reg = cd->gpc_base + cd->cpu2wakeup + i * 4;
+ reg = gpcv2_idx_to_reg(cd, i);
cd->saved_irq_mask[i] = readl_relaxed(reg);
writel_relaxed(cd->wakeup_sources[i], reg);
}
@@ -50,17 +58,14 @@ static int gpcv2_wakeup_source_save(void)
static void gpcv2_wakeup_source_restore(void)
{
struct gpcv2_irqchip_data *cd;
- void __iomem *reg;
int i;
cd = imx_gpcv2_instance;
if (!cd)
return;
- for (i = 0; i < IMR_NUM; i++) {
- reg = cd->gpc_base + cd->cpu2wakeup + i * 4;
- writel_relaxed(cd->saved_irq_mask[i], reg);
- }
+ for (i = 0; i < IMR_NUM; i++)
+ writel_relaxed(cd->saved_irq_mask[i], gpcv2_idx_to_reg(cd, i));
}
static struct syscore_ops imx_gpcv2_syscore_ops = {
@@ -73,12 +78,10 @@ static int imx_gpcv2_irq_set_wake(struct irq_data *d, unsigned int on)
struct gpcv2_irqchip_data *cd = d->chip_data;
unsigned int idx = d->hwirq / 32;
unsigned long flags;
- void __iomem *reg;
u32 mask, val;
raw_spin_lock_irqsave(&cd->rlock, flags);
- reg = cd->gpc_base + cd->cpu2wakeup + idx * 4;
- mask = 1 << d->hwirq % 32;
+ mask = BIT(d->hwirq % 32);
val = cd->wakeup_sources[idx];
cd->wakeup_sources[idx] = on ? (val & ~mask) : (val | mask);
@@ -99,9 +102,9 @@ static void imx_gpcv2_irq_unmask(struct irq_data *d)
u32 val;
raw_spin_lock(&cd->rlock);
- reg = cd->gpc_base + cd->cpu2wakeup + d->hwirq / 32 * 4;
+ reg = gpcv2_idx_to_reg(cd, d->hwirq / 32);
val = readl_relaxed(reg);
- val &= ~(1 << d->hwirq % 32);
+ val &= ~BIT(d->hwirq % 32);
writel_relaxed(val, reg);
raw_spin_unlock(&cd->rlock);
@@ -115,9 +118,9 @@ static void imx_gpcv2_irq_mask(struct irq_data *d)
u32 val;
raw_spin_lock(&cd->rlock);
- reg = cd->gpc_base + cd->cpu2wakeup + d->hwirq / 32 * 4;
+ reg = gpcv2_idx_to_reg(cd, d->hwirq / 32);
val = readl_relaxed(reg);
- val |= 1 << (d->hwirq % 32);
+ val |= BIT(d->hwirq % 32);
writel_relaxed(val, reg);
raw_spin_unlock(&cd->rlock);
@@ -192,11 +195,19 @@ static const struct irq_domain_ops gpcv2_irqchip_data_domain_ops = {
.free = irq_domain_free_irqs_common,
};
+static const struct of_device_id gpcv2_of_match[] = {
+ { .compatible = "fsl,imx7d-gpc", .data = (const void *) 2 },
+ { .compatible = "fsl,imx8mq-gpc", .data = (const void *) 4 },
+ { /* END */ }
+};
+
static int __init imx_gpcv2_irqchip_init(struct device_node *node,
struct device_node *parent)
{
struct irq_domain *parent_domain, *domain;
struct gpcv2_irqchip_data *cd;
+ const struct of_device_id *id;
+ unsigned long core_num;
int i;
if (!parent) {
@@ -204,6 +215,14 @@ static int __init imx_gpcv2_irqchip_init(struct device_node *node,
return -ENODEV;
}
+ id = of_match_node(gpcv2_of_match, node);
+ if (!id) {
+ pr_err("%pOF: unknown compatibility string\n", node);
+ return -ENODEV;
+ }
+
+ core_num = (unsigned long)id->data;
+
parent_domain = irq_find_host(parent);
if (!parent_domain) {
pr_err("%pOF: unable to get parent domain\n", node);
@@ -212,7 +231,7 @@ static int __init imx_gpcv2_irqchip_init(struct device_node *node,
cd = kzalloc(sizeof(struct gpcv2_irqchip_data), GFP_KERNEL);
if (!cd) {
- pr_err("kzalloc failed!\n");
+ pr_err("%pOF: kzalloc failed!\n", node);
return -ENOMEM;
}
@@ -220,7 +239,7 @@ static int __init imx_gpcv2_irqchip_init(struct device_node *node,
cd->gpc_base = of_iomap(node, 0);
if (!cd->gpc_base) {
- pr_err("fsl-gpcv2: unable to map gpc registers\n");
+ pr_err("%pOF: unable to map gpc registers\n", node);
kfree(cd);
return -ENOMEM;
}
@@ -236,8 +255,17 @@ static int __init imx_gpcv2_irqchip_init(struct device_node *node,
/* Initially mask all interrupts */
for (i = 0; i < IMR_NUM; i++) {
- writel_relaxed(~0, cd->gpc_base + GPC_IMR1_CORE0 + i * 4);
- writel_relaxed(~0, cd->gpc_base + GPC_IMR1_CORE1 + i * 4);
+ void __iomem *reg = cd->gpc_base + i * 4;
+
+ switch (core_num) {
+ case 4:
+ writel_relaxed(~0, reg + GPC_IMR1_CORE2);
+ writel_relaxed(~0, reg + GPC_IMR1_CORE3);
+ /* fall through */
+ case 2:
+ writel_relaxed(~0, reg + GPC_IMR1_CORE0);
+ writel_relaxed(~0, reg + GPC_IMR1_CORE1);
+ }
cd->wakeup_sources[i] = ~0;
}
@@ -262,4 +290,5 @@ static int __init imx_gpcv2_irqchip_init(struct device_node *node,
return 0;
}
-IRQCHIP_DECLARE(imx_gpcv2, "fsl,imx7d-gpc", imx_gpcv2_irqchip_init);
+IRQCHIP_DECLARE(imx_gpcv2_imx7d, "fsl,imx7d-gpc", imx_gpcv2_irqchip_init);
+IRQCHIP_DECLARE(imx_gpcv2_imx8mq, "fsl,imx8mq-gpc", imx_gpcv2_irqchip_init);
diff --git a/drivers/irqchip/irq-imx-irqsteer.c b/drivers/irqchip/irq-imx-irqsteer.c
new file mode 100644
index 000000000000..5b3f1d735685
--- /dev/null
+++ b/drivers/irqchip/irq-imx-irqsteer.c
@@ -0,0 +1,261 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2017 NXP
+ * Copyright (C) 2018 Pengutronix, Lucas Stach <kernel@pengutronix.de>
+ */
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/irqdomain.h>
+#include <linux/kernel.h>
+#include <linux/of_platform.h>
+#include <linux/spinlock.h>
+
+#define CTRL_STRIDE_OFF(_t, _r) (_t * 8 * _r)
+#define CHANCTRL 0x0
+#define CHANMASK(n, t) (CTRL_STRIDE_OFF(t, 0) + 0x4 * (n) + 0x4)
+#define CHANSET(n, t) (CTRL_STRIDE_OFF(t, 1) + 0x4 * (n) + 0x4)
+#define CHANSTATUS(n, t) (CTRL_STRIDE_OFF(t, 2) + 0x4 * (n) + 0x4)
+#define CHAN_MINTDIS(t) (CTRL_STRIDE_OFF(t, 3) + 0x4)
+#define CHAN_MASTRSTAT(t) (CTRL_STRIDE_OFF(t, 3) + 0x8)
+
+struct irqsteer_data {
+ void __iomem *regs;
+ struct clk *ipg_clk;
+ int irq;
+ raw_spinlock_t lock;
+ int irq_groups;
+ int channel;
+ struct irq_domain *domain;
+ u32 *saved_reg;
+};
+
+static int imx_irqsteer_get_reg_index(struct irqsteer_data *data,
+ unsigned long irqnum)
+{
+ return (data->irq_groups * 2 - irqnum / 32 - 1);
+}
+
+static void imx_irqsteer_irq_unmask(struct irq_data *d)
+{
+ struct irqsteer_data *data = d->chip_data;
+ int idx = imx_irqsteer_get_reg_index(data, d->hwirq);
+ unsigned long flags;
+ u32 val;
+
+ raw_spin_lock_irqsave(&data->lock, flags);
+ val = readl_relaxed(data->regs + CHANMASK(idx, data->irq_groups));
+ val |= BIT(d->hwirq % 32);
+ writel_relaxed(val, data->regs + CHANMASK(idx, data->irq_groups));
+ raw_spin_unlock_irqrestore(&data->lock, flags);
+}
+
+static void imx_irqsteer_irq_mask(struct irq_data *d)
+{
+ struct irqsteer_data *data = d->chip_data;
+ int idx = imx_irqsteer_get_reg_index(data, d->hwirq);
+ unsigned long flags;
+ u32 val;
+
+ raw_spin_lock_irqsave(&data->lock, flags);
+ val = readl_relaxed(data->regs + CHANMASK(idx, data->irq_groups));
+ val &= ~BIT(d->hwirq % 32);
+ writel_relaxed(val, data->regs + CHANMASK(idx, data->irq_groups));
+ raw_spin_unlock_irqrestore(&data->lock, flags);
+}
+
+static struct irq_chip imx_irqsteer_irq_chip = {
+ .name = "irqsteer",
+ .irq_mask = imx_irqsteer_irq_mask,
+ .irq_unmask = imx_irqsteer_irq_unmask,
+};
+
+static int imx_irqsteer_irq_map(struct irq_domain *h, unsigned int irq,
+ irq_hw_number_t hwirq)
+{
+ irq_set_status_flags(irq, IRQ_LEVEL);
+ irq_set_chip_data(irq, h->host_data);
+ irq_set_chip_and_handler(irq, &imx_irqsteer_irq_chip, handle_level_irq);
+
+ return 0;
+}
+
+static const struct irq_domain_ops imx_irqsteer_domain_ops = {
+ .map = imx_irqsteer_irq_map,
+ .xlate = irq_domain_xlate_onecell,
+};
+
+static void imx_irqsteer_irq_handler(struct irq_desc *desc)
+{
+ struct irqsteer_data *data = irq_desc_get_handler_data(desc);
+ int i;
+
+ chained_irq_enter(irq_desc_get_chip(desc), desc);
+
+ for (i = 0; i < data->irq_groups * 64; i += 32) {
+ int idx = imx_irqsteer_get_reg_index(data, i);
+ unsigned long irqmap;
+ int pos, virq;
+
+ irqmap = readl_relaxed(data->regs +
+ CHANSTATUS(idx, data->irq_groups));
+
+ for_each_set_bit(pos, &irqmap, 32) {
+ virq = irq_find_mapping(data->domain, pos + i);
+ if (virq)
+ generic_handle_irq(virq);
+ }
+ }
+
+ chained_irq_exit(irq_desc_get_chip(desc), desc);
+}
+
+static int imx_irqsteer_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct irqsteer_data *data;
+ struct resource *res;
+ int ret;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(data->regs)) {
+ dev_err(&pdev->dev, "failed to initialize reg\n");
+ return PTR_ERR(data->regs);
+ }
+
+ data->irq = platform_get_irq(pdev, 0);
+ if (data->irq <= 0) {
+ dev_err(&pdev->dev, "failed to get irq\n");
+ return -ENODEV;
+ }
+
+ data->ipg_clk = devm_clk_get(&pdev->dev, "ipg");
+ if (IS_ERR(data->ipg_clk)) {
+ ret = PTR_ERR(data->ipg_clk);
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "failed to get ipg clk: %d\n", ret);
+ return ret;
+ }
+
+ raw_spin_lock_init(&data->lock);
+
+ of_property_read_u32(np, "fsl,irq-groups", &data->irq_groups);
+ of_property_read_u32(np, "fsl,channel", &data->channel);
+
+ if (IS_ENABLED(CONFIG_PM_SLEEP)) {
+ data->saved_reg = devm_kzalloc(&pdev->dev,
+ sizeof(u32) * data->irq_groups * 2,
+ GFP_KERNEL);
+ if (!data->saved_reg)
+ return -ENOMEM;
+ }
+
+ ret = clk_prepare_enable(data->ipg_clk);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to enable ipg clk: %d\n", ret);
+ return ret;
+ }
+
+ /* steer all IRQs into configured channel */
+ writel_relaxed(BIT(data->channel), data->regs + CHANCTRL);
+
+ data->domain = irq_domain_add_linear(np, data->irq_groups * 64,
+ &imx_irqsteer_domain_ops, data);
+ if (!data->domain) {
+ dev_err(&pdev->dev, "failed to create IRQ domain\n");
+ clk_disable_unprepare(data->ipg_clk);
+ return -ENOMEM;
+ }
+
+ irq_set_chained_handler_and_data(data->irq, imx_irqsteer_irq_handler,
+ data);
+
+ platform_set_drvdata(pdev, data);
+
+ return 0;
+}
+
+static int imx_irqsteer_remove(struct platform_device *pdev)
+{
+ struct irqsteer_data *irqsteer_data = platform_get_drvdata(pdev);
+
+ irq_set_chained_handler_and_data(irqsteer_data->irq, NULL, NULL);
+ irq_domain_remove(irqsteer_data->domain);
+
+ clk_disable_unprepare(irqsteer_data->ipg_clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void imx_irqsteer_save_regs(struct irqsteer_data *data)
+{
+ int i;
+
+ for (i = 0; i < data->irq_groups * 2; i++)
+ data->saved_reg[i] = readl_relaxed(data->regs +
+ CHANMASK(i, data->irq_groups));
+}
+
+static void imx_irqsteer_restore_regs(struct irqsteer_data *data)
+{
+ int i;
+
+ writel_relaxed(BIT(data->channel), data->regs + CHANCTRL);
+ for (i = 0; i < data->irq_groups * 2; i++)
+ writel_relaxed(data->saved_reg[i],
+ data->regs + CHANMASK(i, data->irq_groups));
+}
+
+static int imx_irqsteer_suspend(struct device *dev)
+{
+ struct irqsteer_data *irqsteer_data = dev_get_drvdata(dev);
+
+ imx_irqsteer_save_regs(irqsteer_data);
+ clk_disable_unprepare(irqsteer_data->ipg_clk);
+
+ return 0;
+}
+
+static int imx_irqsteer_resume(struct device *dev)
+{
+ struct irqsteer_data *irqsteer_data = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(irqsteer_data->ipg_clk);
+ if (ret) {
+ dev_err(dev, "failed to enable ipg clk: %d\n", ret);
+ return ret;
+ }
+ imx_irqsteer_restore_regs(irqsteer_data);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops imx_irqsteer_pm_ops = {
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(imx_irqsteer_suspend, imx_irqsteer_resume)
+};
+
+static const struct of_device_id imx_irqsteer_dt_ids[] = {
+ { .compatible = "fsl,imx-irqsteer", },
+ {},
+};
+
+static struct platform_driver imx_irqsteer_driver = {
+ .driver = {
+ .name = "imx-irqsteer",
+ .of_match_table = imx_irqsteer_dt_ids,
+ .pm = &imx_irqsteer_pm_ops,
+ },
+ .probe = imx_irqsteer_probe,
+ .remove = imx_irqsteer_remove,
+};
+builtin_platform_driver(imx_irqsteer_driver);
diff --git a/drivers/irqchip/irq-madera.c b/drivers/irqchip/irq-madera.c
new file mode 100644
index 000000000000..e9256dee1a45
--- /dev/null
+++ b/drivers/irqchip/irq-madera.c
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Interrupt support for Cirrus Logic Madera codecs
+ *
+ * Copyright (C) 2015-2018 Cirrus Logic, Inc. and
+ * Cirrus Logic International Semiconductor Ltd.
+ */
+
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/irqchip/irq-madera.h>
+#include <linux/mfd/madera/core.h>
+#include <linux/mfd/madera/pdata.h>
+#include <linux/mfd/madera/registers.h>
+
+#define MADERA_IRQ(_irq, _reg) \
+ [MADERA_IRQ_ ## _irq] = { \
+ .reg_offset = (_reg) - MADERA_IRQ1_STATUS_2, \
+ .mask = MADERA_ ## _irq ## _EINT1 \
+ }
+
+/* Mappings are the same for all Madera codecs */
+static const struct regmap_irq madera_irqs[MADERA_NUM_IRQ] = {
+ MADERA_IRQ(FLL1_LOCK, MADERA_IRQ1_STATUS_2),
+ MADERA_IRQ(FLL2_LOCK, MADERA_IRQ1_STATUS_2),
+ MADERA_IRQ(FLL3_LOCK, MADERA_IRQ1_STATUS_2),
+ MADERA_IRQ(FLLAO_LOCK, MADERA_IRQ1_STATUS_2),
+
+ MADERA_IRQ(MICDET1, MADERA_IRQ1_STATUS_6),
+ MADERA_IRQ(MICDET2, MADERA_IRQ1_STATUS_6),
+ MADERA_IRQ(HPDET, MADERA_IRQ1_STATUS_6),
+
+ MADERA_IRQ(MICD_CLAMP_RISE, MADERA_IRQ1_STATUS_7),
+ MADERA_IRQ(MICD_CLAMP_FALL, MADERA_IRQ1_STATUS_7),
+ MADERA_IRQ(JD1_RISE, MADERA_IRQ1_STATUS_7),
+ MADERA_IRQ(JD1_FALL, MADERA_IRQ1_STATUS_7),
+
+ MADERA_IRQ(ASRC2_IN1_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(ASRC2_IN2_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(ASRC1_IN1_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(ASRC1_IN2_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(DRC2_SIG_DET, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(DRC1_SIG_DET, MADERA_IRQ1_STATUS_9),
+
+ MADERA_IRQ(DSP_IRQ1, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ2, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ3, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ4, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ5, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ6, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ7, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ8, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ9, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ10, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ11, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ12, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ13, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ14, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ15, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ16, MADERA_IRQ1_STATUS_11),
+
+ MADERA_IRQ(HP3R_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP3L_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP2R_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP2L_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP1R_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP1L_SC, MADERA_IRQ1_STATUS_12),
+
+ MADERA_IRQ(SPK_OVERHEAT_WARN, MADERA_IRQ1_STATUS_15),
+ MADERA_IRQ(SPK_OVERHEAT, MADERA_IRQ1_STATUS_15),
+
+ MADERA_IRQ(DSP1_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP2_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP3_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP4_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP5_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP6_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP7_BUS_ERR, MADERA_IRQ1_STATUS_33),
+};
+
+static const struct regmap_irq_chip madera_irq_chip = {
+ .name = "madera IRQ",
+ .status_base = MADERA_IRQ1_STATUS_2,
+ .mask_base = MADERA_IRQ1_MASK_2,
+ .ack_base = MADERA_IRQ1_STATUS_2,
+ .runtime_pm = true,
+ .num_regs = 32,
+ .irqs = madera_irqs,
+ .num_irqs = ARRAY_SIZE(madera_irqs),
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int madera_suspend(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "Suspend, disabling IRQ\n");
+
+ /*
+ * A runtime resume would be needed to access the chip interrupt
+ * controller but runtime pm doesn't function during suspend.
+ * Temporarily disable interrupts until we reach suspend_noirq state.
+ */
+ disable_irq(madera->irq);
+
+ return 0;
+}
+
+static int madera_suspend_noirq(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "No IRQ suspend, reenabling IRQ\n");
+
+ /* Re-enable interrupts to service wakeup interrupts from the chip */
+ enable_irq(madera->irq);
+
+ return 0;
+}
+
+static int madera_resume_noirq(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "No IRQ resume, disabling IRQ\n");
+
+ /*
+ * We can't handle interrupts until runtime pm is available again.
+ * Disable them temporarily.
+ */
+ disable_irq(madera->irq);
+
+ return 0;
+}
+
+static int madera_resume(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "Resume, reenabling IRQ\n");
+
+ /* Interrupts can now be handled */
+ enable_irq(madera->irq);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops madera_irq_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(madera_suspend, madera_resume)
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(madera_suspend_noirq,
+ madera_resume_noirq)
+};
+
+static int madera_irq_probe(struct platform_device *pdev)
+{
+ struct madera *madera = dev_get_drvdata(pdev->dev.parent);
+ struct irq_data *irq_data;
+ unsigned int irq_flags = 0;
+ int ret;
+
+ dev_dbg(&pdev->dev, "probe\n");
+
+ /*
+ * Read the flags from the interrupt controller if not specified
+ * by pdata
+ */
+ irq_flags = madera->pdata.irq_flags;
+ if (!irq_flags) {
+ irq_data = irq_get_irq_data(madera->irq);
+ if (!irq_data) {
+ dev_err(&pdev->dev, "Invalid IRQ: %d\n", madera->irq);
+ return -EINVAL;
+ }
+
+ irq_flags = irqd_get_trigger_type(irq_data);
+
+ /* Codec defaults to trigger low, use this if no flags given */
+ if (irq_flags == IRQ_TYPE_NONE)
+ irq_flags = IRQF_TRIGGER_LOW;
+ }
+
+ if (irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
+ dev_err(&pdev->dev, "Host interrupt not level-triggered\n");
+ return -EINVAL;
+ }
+
+ /*
+ * The silicon always starts at active-low, check if we need to
+ * switch to active-high.
+ */
+ if (irq_flags & IRQF_TRIGGER_HIGH) {
+ ret = regmap_update_bits(madera->regmap, MADERA_IRQ1_CTRL,
+ MADERA_IRQ_POL_MASK, 0);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to set IRQ polarity: %d\n", ret);
+ return ret;
+ }
+ }
+
+ /*
+ * NOTE: regmap registers this against the OF node of the parent of
+ * the regmap - that is, against the mfd driver
+ */
+ ret = regmap_add_irq_chip(madera->regmap, madera->irq, IRQF_ONESHOT, 0,
+ &madera_irq_chip, &madera->irq_data);
+ if (ret) {
+ dev_err(&pdev->dev, "add_irq_chip failed: %d\n", ret);
+ return ret;
+ }
+
+ /* Save dev in parent MFD struct so it is accessible to siblings */
+ madera->irq_dev = &pdev->dev;
+
+ return 0;
+}
+
+static int madera_irq_remove(struct platform_device *pdev)
+{
+ struct madera *madera = dev_get_drvdata(pdev->dev.parent);
+
+ /*
+ * The IRQ is disabled by the parent MFD driver before
+ * it starts cleaning up all child drivers
+ */
+ madera->irq_dev = NULL;
+ regmap_del_irq_chip(madera->irq, madera->irq_data);
+
+ return 0;
+}
+
+static struct platform_driver madera_irq_driver = {
+ .probe = &madera_irq_probe,
+ .remove = &madera_irq_remove,
+ .driver = {
+ .name = "madera-irq",
+ .pm = &madera_irq_pm_ops,
+ }
+};
+module_platform_driver(madera_irq_driver);
+
+MODULE_SOFTDEP("pre: madera");
+MODULE_DESCRIPTION("Madera IRQ driver");
+MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/irqchip/irq-mscc-ocelot.c b/drivers/irqchip/irq-mscc-ocelot.c
index b63e40c00a02..88143c0b700c 100644
--- a/drivers/irqchip/irq-mscc-ocelot.c
+++ b/drivers/irqchip/irq-mscc-ocelot.c
@@ -72,7 +72,7 @@ static int __init ocelot_irq_init(struct device_node *node,
domain = irq_domain_add_linear(node, OCELOT_NR_IRQ,
&irq_generic_chip_ops, NULL);
if (!domain) {
- pr_err("%s: unable to add irq domain\n", node->name);
+ pr_err("%pOFn: unable to add irq domain\n", node);
return -ENOMEM;
}
@@ -80,14 +80,14 @@ static int __init ocelot_irq_init(struct device_node *node,
"icpu", handle_level_irq,
0, 0, 0);
if (ret) {
- pr_err("%s: unable to alloc irq domain gc\n", node->name);
+ pr_err("%pOFn: unable to alloc irq domain gc\n", node);
goto err_domain_remove;
}
gc = irq_get_domain_generic_chip(domain, 0);
gc->reg_base = of_iomap(node, 0);
if (!gc->reg_base) {
- pr_err("%s: unable to map resource\n", node->name);
+ pr_err("%pOFn: unable to map resource\n", node);
ret = -ENOMEM;
goto err_gc_free;
}
diff --git a/drivers/irqchip/irq-rda-intc.c b/drivers/irqchip/irq-rda-intc.c
new file mode 100644
index 000000000000..960168303b73
--- /dev/null
+++ b/drivers/irqchip/irq-rda-intc.c
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * RDA8810PL SoC irqchip driver
+ *
+ * Copyright RDA Microelectronics Company Limited
+ * Copyright (c) 2017 Andreas Färber
+ * Copyright (c) 2018 Manivannan Sadhasivam
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
+
+#include <asm/exception.h>
+
+#define RDA_INTC_FINALSTATUS 0x00
+#define RDA_INTC_MASK_SET 0x08
+#define RDA_INTC_MASK_CLR 0x0c
+
+#define RDA_IRQ_MASK_ALL 0xFFFFFFFF
+
+#define RDA_NR_IRQS 32
+
+static void __iomem *rda_intc_base;
+static struct irq_domain *rda_irq_domain;
+
+static void rda_intc_mask_irq(struct irq_data *d)
+{
+ writel_relaxed(BIT(d->hwirq), rda_intc_base + RDA_INTC_MASK_CLR);
+}
+
+static void rda_intc_unmask_irq(struct irq_data *d)
+{
+ writel_relaxed(BIT(d->hwirq), rda_intc_base + RDA_INTC_MASK_SET);
+}
+
+static int rda_intc_set_type(struct irq_data *data, unsigned int flow_type)
+{
+ /* Hardware supports only level triggered interrupts */
+ if ((flow_type & (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_LOW)) == flow_type)
+ return 0;
+
+ return -EINVAL;
+}
+
+static void __exception_irq_entry rda_handle_irq(struct pt_regs *regs)
+{
+ u32 stat = readl_relaxed(rda_intc_base + RDA_INTC_FINALSTATUS);
+ u32 hwirq;
+
+ while (stat) {
+ hwirq = __fls(stat);
+ handle_domain_irq(rda_irq_domain, hwirq, regs);
+ stat &= ~BIT(hwirq);
+ }
+}
+
+static struct irq_chip rda_irq_chip = {
+ .name = "rda-intc",
+ .irq_mask = rda_intc_mask_irq,
+ .irq_unmask = rda_intc_unmask_irq,
+ .irq_set_type = rda_intc_set_type,
+};
+
+static int rda_irq_map(struct irq_domain *d,
+ unsigned int virq, irq_hw_number_t hw)
+{
+ irq_set_status_flags(virq, IRQ_LEVEL);
+ irq_set_chip_and_handler(virq, &rda_irq_chip, handle_level_irq);
+ irq_set_chip_data(virq, d->host_data);
+ irq_set_probe(virq);
+
+ return 0;
+}
+
+static const struct irq_domain_ops rda_irq_domain_ops = {
+ .map = rda_irq_map,
+ .xlate = irq_domain_xlate_onecell,
+};
+
+static int __init rda8810_intc_init(struct device_node *node,
+ struct device_node *parent)
+{
+ rda_intc_base = of_io_request_and_map(node, 0, "rda-intc");
+ if (IS_ERR(rda_intc_base))
+ return PTR_ERR(rda_intc_base);
+
+ /* Mask all interrupt sources */
+ writel_relaxed(RDA_IRQ_MASK_ALL, rda_intc_base + RDA_INTC_MASK_CLR);
+
+ rda_irq_domain = irq_domain_create_linear(&node->fwnode, RDA_NR_IRQS,
+ &rda_irq_domain_ops,
+ rda_intc_base);
+ if (!rda_irq_domain) {
+ iounmap(rda_intc_base);
+ return -ENOMEM;
+ }
+
+ set_handle_irq(rda_handle_irq);
+
+ return 0;
+}
+
+IRQCHIP_DECLARE(rda_intc, "rda,8810pl-intc", rda8810_intc_init);
diff --git a/drivers/irqchip/irq-renesas-intc-irqpin.c b/drivers/irqchip/irq-renesas-intc-irqpin.c
index c6e6c9e9137a..8c039525703f 100644
--- a/drivers/irqchip/irq-renesas-intc-irqpin.c
+++ b/drivers/irqchip/irq-renesas-intc-irqpin.c
@@ -1,20 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Renesas INTC External IRQ Pin Driver
*
* Copyright (C) 2013 Magnus Damm
- *
- * 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
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
index a4f11124024d..a449a7c839b3 100644
--- a/drivers/irqchip/irq-renesas-irqc.c
+++ b/drivers/irqchip/irq-renesas-irqc.c
@@ -1,20 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Renesas IRQC Driver
*
* Copyright (C) 2013 Magnus Damm
- *
- * 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
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index 0a2088e12d96..6edfd4bfa169 100644
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c
@@ -6,6 +6,8 @@
*/
#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/hwspinlock.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
@@ -20,6 +22,9 @@
#define IRQS_PER_BANK 32
+#define HWSPNLCK_TIMEOUT 1000 /* usec */
+#define HWSPNLCK_RETRY_DELAY 100 /* usec */
+
struct stm32_exti_bank {
u32 imr_ofst;
u32 emr_ofst;
@@ -32,6 +37,12 @@ struct stm32_exti_bank {
#define UNDEF_REG ~0
+enum stm32_exti_hwspinlock {
+ HWSPINLOCK_UNKNOWN,
+ HWSPINLOCK_NONE,
+ HWSPINLOCK_READY,
+};
+
struct stm32_desc_irq {
u32 exti;
u32 irq_parent;
@@ -58,6 +69,9 @@ struct stm32_exti_host_data {
void __iomem *base;
struct stm32_exti_chip_data *chips_data;
const struct stm32_exti_drv_data *drv_data;
+ struct device_node *node;
+ enum stm32_exti_hwspinlock hwlock_state;
+ struct hwspinlock *hwlock;
};
static struct stm32_exti_host_data *stm32_host_data;
@@ -269,6 +283,64 @@ static int stm32_exti_set_type(struct irq_data *d,
return 0;
}
+static int stm32_exti_hwspin_lock(struct stm32_exti_chip_data *chip_data)
+{
+ struct stm32_exti_host_data *host_data = chip_data->host_data;
+ struct hwspinlock *hwlock;
+ int id, ret = 0, timeout = 0;
+
+ /* first time, check for hwspinlock availability */
+ if (unlikely(host_data->hwlock_state == HWSPINLOCK_UNKNOWN)) {
+ id = of_hwspin_lock_get_id(host_data->node, 0);
+ if (id >= 0) {
+ hwlock = hwspin_lock_request_specific(id);
+ if (hwlock) {
+ /* found valid hwspinlock */
+ host_data->hwlock_state = HWSPINLOCK_READY;
+ host_data->hwlock = hwlock;
+ pr_debug("%s hwspinlock = %d\n", __func__, id);
+ } else {
+ host_data->hwlock_state = HWSPINLOCK_NONE;
+ }
+ } else if (id != -EPROBE_DEFER) {
+ host_data->hwlock_state = HWSPINLOCK_NONE;
+ } else {
+ /* hwspinlock driver shall be ready at that stage */
+ ret = -EPROBE_DEFER;
+ }
+ }
+
+ if (likely(host_data->hwlock_state == HWSPINLOCK_READY)) {
+ /*
+ * Use the x_raw API since we are under spin_lock protection.
+ * Do not use the x_timeout API because we are under irq_disable
+ * mode (see __setup_irq())
+ */
+ do {
+ ret = hwspin_trylock_raw(host_data->hwlock);
+ if (!ret)
+ return 0;
+
+ udelay(HWSPNLCK_RETRY_DELAY);
+ timeout += HWSPNLCK_RETRY_DELAY;
+ } while (timeout < HWSPNLCK_TIMEOUT);
+
+ if (ret == -EBUSY)
+ ret = -ETIMEDOUT;
+ }
+
+ if (ret)
+ pr_err("%s can't get hwspinlock (%d)\n", __func__, ret);
+
+ return ret;
+}
+
+static void stm32_exti_hwspin_unlock(struct stm32_exti_chip_data *chip_data)
+{
+ if (likely(chip_data->host_data->hwlock_state == HWSPINLOCK_READY))
+ hwspin_unlock_raw(chip_data->host_data->hwlock);
+}
+
static int stm32_irq_set_type(struct irq_data *d, unsigned int type)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
@@ -279,21 +351,26 @@ static int stm32_irq_set_type(struct irq_data *d, unsigned int type)
irq_gc_lock(gc);
+ err = stm32_exti_hwspin_lock(chip_data);
+ if (err)
+ goto unlock;
+
rtsr = irq_reg_readl(gc, stm32_bank->rtsr_ofst);
ftsr = irq_reg_readl(gc, stm32_bank->ftsr_ofst);
err = stm32_exti_set_type(d, type, &rtsr, &ftsr);
- if (err) {
- irq_gc_unlock(gc);
- return err;
- }
+ if (err)
+ goto unspinlock;
irq_reg_writel(gc, rtsr, stm32_bank->rtsr_ofst);
irq_reg_writel(gc, ftsr, stm32_bank->ftsr_ofst);
+unspinlock:
+ stm32_exti_hwspin_unlock(chip_data);
+unlock:
irq_gc_unlock(gc);
- return 0;
+ return err;
}
static void stm32_chip_suspend(struct stm32_exti_chip_data *chip_data,
@@ -460,20 +537,27 @@ static int stm32_exti_h_set_type(struct irq_data *d, unsigned int type)
int err;
raw_spin_lock(&chip_data->rlock);
+
+ err = stm32_exti_hwspin_lock(chip_data);
+ if (err)
+ goto unlock;
+
rtsr = readl_relaxed(base + stm32_bank->rtsr_ofst);
ftsr = readl_relaxed(base + stm32_bank->ftsr_ofst);
err = stm32_exti_set_type(d, type, &rtsr, &ftsr);
- if (err) {
- raw_spin_unlock(&chip_data->rlock);
- return err;
- }
+ if (err)
+ goto unspinlock;
writel_relaxed(rtsr, base + stm32_bank->rtsr_ofst);
writel_relaxed(ftsr, base + stm32_bank->ftsr_ofst);
+
+unspinlock:
+ stm32_exti_hwspin_unlock(chip_data);
+unlock:
raw_spin_unlock(&chip_data->rlock);
- return 0;
+ return err;
}
static int stm32_exti_h_set_wake(struct irq_data *d, unsigned int on)
@@ -599,6 +683,8 @@ stm32_exti_host_data *stm32_exti_host_init(const struct stm32_exti_drv_data *dd,
return NULL;
host_data->drv_data = dd;
+ host_data->node = node;
+ host_data->hwlock_state = HWSPINLOCK_UNKNOWN;
host_data->chips_data = kcalloc(dd->bank_nr,
sizeof(struct stm32_exti_chip_data),
GFP_KERNEL);
@@ -625,8 +711,7 @@ free_host_data:
static struct
stm32_exti_chip_data *stm32_exti_chip_init(struct stm32_exti_host_data *h_data,
- u32 bank_idx,
- struct device_node *node)
+ u32 bank_idx)
{
const struct stm32_exti_bank *stm32_bank;
struct stm32_exti_chip_data *chip_data;
@@ -656,8 +741,7 @@ stm32_exti_chip_data *stm32_exti_chip_init(struct stm32_exti_host_data *h_data,
if (stm32_bank->fpr_ofst != UNDEF_REG)
writel_relaxed(~0UL, base + stm32_bank->fpr_ofst);
- pr_info("%s: bank%d, External IRQs available:%#x\n",
- node->full_name, bank_idx, irqs_mask);
+ pr_info("%pOF: bank%d\n", h_data->node, bank_idx);
return chip_data;
}
@@ -678,8 +762,8 @@ static int __init stm32_exti_init(const struct stm32_exti_drv_data *drv_data,
domain = irq_domain_add_linear(node, drv_data->bank_nr * IRQS_PER_BANK,
&irq_exti_domain_ops, NULL);
if (!domain) {
- pr_err("%s: Could not register interrupt domain.\n",
- node->name);
+ pr_err("%pOFn: Could not register interrupt domain.\n",
+ node);
ret = -ENOMEM;
goto out_unmap;
}
@@ -697,7 +781,7 @@ static int __init stm32_exti_init(const struct stm32_exti_drv_data *drv_data,
struct stm32_exti_chip_data *chip_data;
stm32_bank = drv_data->exti_banks[i];
- chip_data = stm32_exti_chip_init(host_data, i, node);
+ chip_data = stm32_exti_chip_init(host_data, i);
gc = irq_get_domain_generic_chip(domain, i * IRQS_PER_BANK);
@@ -760,7 +844,7 @@ __init stm32_exti_hierarchy_init(const struct stm32_exti_drv_data *drv_data,
return -ENOMEM;
for (i = 0; i < drv_data->bank_nr; i++)
- stm32_exti_chip_init(host_data, i, node);
+ stm32_exti_chip_init(host_data, i);
domain = irq_domain_add_hierarchy(parent_domain, 0,
drv_data->bank_nr * IRQS_PER_BANK,
@@ -768,7 +852,7 @@ __init stm32_exti_hierarchy_init(const struct stm32_exti_drv_data *drv_data,
host_data);
if (!domain) {
- pr_err("%s: Could not register exti domain.\n", node->name);
+ pr_err("%pOFn: Could not register exti domain.\n", node);
ret = -ENOMEM;
goto out_unmap;
}
diff --git a/drivers/irqchip/irq-sun4i.c b/drivers/irqchip/irq-sun4i.c
index e3e5b9132b75..fb78d6623556 100644
--- a/drivers/irqchip/irq-sun4i.c
+++ b/drivers/irqchip/irq-sun4i.c
@@ -28,11 +28,21 @@
#define SUN4I_IRQ_NMI_CTRL_REG 0x0c
#define SUN4I_IRQ_PENDING_REG(x) (0x10 + 0x4 * x)
#define SUN4I_IRQ_FIQ_PENDING_REG(x) (0x20 + 0x4 * x)
-#define SUN4I_IRQ_ENABLE_REG(x) (0x40 + 0x4 * x)
-#define SUN4I_IRQ_MASK_REG(x) (0x50 + 0x4 * x)
+#define SUN4I_IRQ_ENABLE_REG(data, x) ((data)->enable_reg_offset + 0x4 * x)
+#define SUN4I_IRQ_MASK_REG(data, x) ((data)->mask_reg_offset + 0x4 * x)
+#define SUN4I_IRQ_ENABLE_REG_OFFSET 0x40
+#define SUN4I_IRQ_MASK_REG_OFFSET 0x50
+#define SUNIV_IRQ_ENABLE_REG_OFFSET 0x20
+#define SUNIV_IRQ_MASK_REG_OFFSET 0x30
+
+struct sun4i_irq_chip_data {
+ void __iomem *irq_base;
+ struct irq_domain *irq_domain;
+ u32 enable_reg_offset;
+ u32 mask_reg_offset;
+};
-static void __iomem *sun4i_irq_base;
-static struct irq_domain *sun4i_irq_domain;
+static struct sun4i_irq_chip_data *irq_ic_data;
static void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs);
@@ -43,7 +53,7 @@ static void sun4i_irq_ack(struct irq_data *irqd)
if (irq != 0)
return; /* Only IRQ 0 / the ENMI needs to be acked */
- writel(BIT(0), sun4i_irq_base + SUN4I_IRQ_PENDING_REG(0));
+ writel(BIT(0), irq_ic_data->irq_base + SUN4I_IRQ_PENDING_REG(0));
}
static void sun4i_irq_mask(struct irq_data *irqd)
@@ -53,9 +63,10 @@ static void sun4i_irq_mask(struct irq_data *irqd)
int reg = irq / 32;
u32 val;
- val = readl(sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ val = readl(irq_ic_data->irq_base +
+ SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
writel(val & ~(1 << irq_off),
- sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
}
static void sun4i_irq_unmask(struct irq_data *irqd)
@@ -65,9 +76,10 @@ static void sun4i_irq_unmask(struct irq_data *irqd)
int reg = irq / 32;
u32 val;
- val = readl(sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ val = readl(irq_ic_data->irq_base +
+ SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
writel(val | (1 << irq_off),
- sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
}
static struct irq_chip sun4i_irq_chip = {
@@ -95,42 +107,76 @@ static const struct irq_domain_ops sun4i_irq_ops = {
static int __init sun4i_of_init(struct device_node *node,
struct device_node *parent)
{
- sun4i_irq_base = of_iomap(node, 0);
- if (!sun4i_irq_base)
+ irq_ic_data->irq_base = of_iomap(node, 0);
+ if (!irq_ic_data->irq_base)
panic("%pOF: unable to map IC registers\n",
node);
/* Disable all interrupts */
- writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(0));
- writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(1));
- writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(2));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, 0));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, 1));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, 2));
/* Unmask all the interrupts, ENABLE_REG(x) is used for masking */
- writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(0));
- writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(1));
- writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(2));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(irq_ic_data, 0));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(irq_ic_data, 1));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(irq_ic_data, 2));
/* Clear all the pending interrupts */
- writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(0));
- writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(1));
- writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(2));
+ writel(0xffffffff, irq_ic_data->irq_base + SUN4I_IRQ_PENDING_REG(0));
+ writel(0xffffffff, irq_ic_data->irq_base + SUN4I_IRQ_PENDING_REG(1));
+ writel(0xffffffff, irq_ic_data->irq_base + SUN4I_IRQ_PENDING_REG(2));
/* Enable protection mode */
- writel(0x01, sun4i_irq_base + SUN4I_IRQ_PROTECTION_REG);
+ writel(0x01, irq_ic_data->irq_base + SUN4I_IRQ_PROTECTION_REG);
/* Configure the external interrupt source type */
- writel(0x00, sun4i_irq_base + SUN4I_IRQ_NMI_CTRL_REG);
+ writel(0x00, irq_ic_data->irq_base + SUN4I_IRQ_NMI_CTRL_REG);
- sun4i_irq_domain = irq_domain_add_linear(node, 3 * 32,
+ irq_ic_data->irq_domain = irq_domain_add_linear(node, 3 * 32,
&sun4i_irq_ops, NULL);
- if (!sun4i_irq_domain)
+ if (!irq_ic_data->irq_domain)
panic("%pOF: unable to create IRQ domain\n", node);
set_handle_irq(sun4i_handle_irq);
return 0;
}
-IRQCHIP_DECLARE(allwinner_sun4i_ic, "allwinner,sun4i-a10-ic", sun4i_of_init);
+
+static int __init sun4i_ic_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL);
+ if (!irq_ic_data) {
+ pr_err("kzalloc failed!\n");
+ return -ENOMEM;
+ }
+
+ irq_ic_data->enable_reg_offset = SUN4I_IRQ_ENABLE_REG_OFFSET;
+ irq_ic_data->mask_reg_offset = SUN4I_IRQ_MASK_REG_OFFSET;
+
+ return sun4i_of_init(node, parent);
+}
+
+IRQCHIP_DECLARE(allwinner_sun4i_ic, "allwinner,sun4i-a10-ic", sun4i_ic_of_init);
+
+static int __init suniv_ic_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL);
+ if (!irq_ic_data) {
+ pr_err("kzalloc failed!\n");
+ return -ENOMEM;
+ }
+
+ irq_ic_data->enable_reg_offset = SUNIV_IRQ_ENABLE_REG_OFFSET;
+ irq_ic_data->mask_reg_offset = SUNIV_IRQ_MASK_REG_OFFSET;
+
+ return sun4i_of_init(node, parent);
+}
+
+IRQCHIP_DECLARE(allwinner_sunvi_ic, "allwinner,suniv-f1c100s-ic",
+ suniv_ic_of_init);
static void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs)
{
@@ -146,13 +192,15 @@ static void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs)
* the extra check in the common case of 1 hapening after having
* read the vector-reg once.
*/
- hwirq = readl(sun4i_irq_base + SUN4I_IRQ_VECTOR_REG) >> 2;
+ hwirq = readl(irq_ic_data->irq_base + SUN4I_IRQ_VECTOR_REG) >> 2;
if (hwirq == 0 &&
- !(readl(sun4i_irq_base + SUN4I_IRQ_PENDING_REG(0)) & BIT(0)))
+ !(readl(irq_ic_data->irq_base + SUN4I_IRQ_PENDING_REG(0)) &
+ BIT(0)))
return;
do {
- handle_domain_irq(sun4i_irq_domain, hwirq, regs);
- hwirq = readl(sun4i_irq_base + SUN4I_IRQ_VECTOR_REG) >> 2;
+ handle_domain_irq(irq_ic_data->irq_domain, hwirq, regs);
+ hwirq = readl(irq_ic_data->irq_base +
+ SUN4I_IRQ_VECTOR_REG) >> 2;
} while (hwirq != 0);
}
diff --git a/drivers/irqchip/irq-tango.c b/drivers/irqchip/irq-tango.c
index 580e2d72b9ba..ae28d8648679 100644
--- a/drivers/irqchip/irq-tango.c
+++ b/drivers/irqchip/irq-tango.c
@@ -184,11 +184,11 @@ static int __init tangox_irq_init(void __iomem *base, struct resource *baseres,
irq = irq_of_parse_and_map(node, 0);
if (!irq)
- panic("%s: failed to get IRQ", node->name);
+ panic("%pOFn: failed to get IRQ", node);
err = of_address_to_resource(node, 0, &res);
if (err)
- panic("%s: failed to get address", node->name);
+ panic("%pOFn: failed to get address", node);
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
chip->ctl = res.start - baseres->start;
@@ -196,12 +196,12 @@ static int __init tangox_irq_init(void __iomem *base, struct resource *baseres,
dom = irq_domain_add_linear(node, 64, &irq_generic_chip_ops, chip);
if (!dom)
- panic("%s: failed to create irqdomain", node->name);
+ panic("%pOFn: failed to create irqdomain", node);
err = irq_alloc_domain_generic_chips(dom, 32, 2, node->name,
handle_level_irq, 0, 0, 0);
if (err)
- panic("%s: failed to allocate irqchip", node->name);
+ panic("%pOFn: failed to allocate irqchip", node);
tangox_irq_domain_init(dom);
@@ -219,7 +219,7 @@ static int __init tangox_of_irq_init(struct device_node *node,
base = of_iomap(node, 0);
if (!base)
- panic("%s: of_iomap failed", node->name);
+ panic("%pOFn: of_iomap failed", node);
of_address_to_resource(node, 0, &res);