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-rw-r--r--drivers/base/platform-msi.c1
-rw-r--r--drivers/bcma/driver_gpio.c2
-rw-r--r--drivers/gpio/gpio-mlxbf2.c6
-rw-r--r--drivers/irqchip/Kconfig17
-rw-r--r--drivers/irqchip/Makefile1
-rw-r--r--drivers/irqchip/irq-gic-v3.c2
-rw-r--r--drivers/irqchip/irq-imx-mu-msi.c453
-rw-r--r--drivers/irqchip/irq-ls-extirq.c87
-rw-r--r--drivers/irqchip/irq-realtek-rtl.c134
-rw-r--r--drivers/pinctrl/pinctrl-amd.c2
-rw-r--r--drivers/platform/x86/intel/int0002_vgpio.c3
-rw-r--r--drivers/ssb/driver_gpio.c6
12 files changed, 605 insertions, 109 deletions
diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index 296ea673d661..12b044151298 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -138,6 +138,7 @@ struct irq_domain *platform_msi_create_irq_domain(struct fwnode_handle *fwnode,
return domain;
}
+EXPORT_SYMBOL_GPL(platform_msi_create_irq_domain);
static int platform_msi_alloc_priv_data(struct device *dev, unsigned int nvec,
irq_write_msi_msg_t write_msi_msg)
diff --git a/drivers/bcma/driver_gpio.c b/drivers/bcma/driver_gpio.c
index fac8ff983aec..65fb9bad1577 100644
--- a/drivers/bcma/driver_gpio.c
+++ b/drivers/bcma/driver_gpio.c
@@ -115,7 +115,7 @@ static irqreturn_t bcma_gpio_irq_handler(int irq, void *dev_id)
return IRQ_NONE;
for_each_set_bit(gpio, &irqs, gc->ngpio)
- generic_handle_irq(irq_find_mapping(gc->irq.domain, gpio));
+ generic_handle_domain_irq_safe(gc->irq.domain, gpio);
bcma_chipco_gpio_polarity(cc, irqs, val & irqs);
return IRQ_HANDLED;
diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c
index 64cb060d9d75..77a41151c921 100644
--- a/drivers/gpio/gpio-mlxbf2.c
+++ b/drivers/gpio/gpio-mlxbf2.c
@@ -273,10 +273,8 @@ static irqreturn_t mlxbf2_gpio_irq_handler(int irq, void *ptr)
pending = readl(gs->gpio_io + YU_GPIO_CAUSE_OR_CAUSE_EVTEN0);
writel(pending, gs->gpio_io + YU_GPIO_CAUSE_OR_CLRCAUSE);
- for_each_set_bit(level, &pending, gc->ngpio) {
- int gpio_irq = irq_find_mapping(gc->irq.domain, level);
- generic_handle_irq(gpio_irq);
- }
+ for_each_set_bit(level, &pending, gc->ngpio)
+ generic_handle_domain_irq_safe(gc->irq.domain, level);
return IRQ_RETVAL(pending);
}
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index eb5ea5b69cfa..7ef9f5e696d3 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -3,7 +3,7 @@ menu "IRQ chip support"
config IRQCHIP
def_bool y
- depends on OF_IRQ
+ depends on (OF_IRQ || ACPI_GENERIC_GSI)
config ARM_GIC
bool
@@ -481,6 +481,21 @@ config IMX_INTMUX
help
Support for the i.MX INTMUX interrupt multiplexer.
+config IMX_MU_MSI
+ tristate "i.MX MU used as MSI controller"
+ depends on OF && HAS_IOMEM
+ depends on ARCH_MXC || COMPILE_TEST
+ default m if ARCH_MXC
+ select IRQ_DOMAIN
+ select IRQ_DOMAIN_HIERARCHY
+ select GENERIC_MSI_IRQ_DOMAIN
+ help
+ Provide a driver for the i.MX Messaging Unit block used as a
+ CPU-to-CPU MSI controller. This requires a specially crafted DT
+ to make use of this driver.
+
+ If unsure, say N
+
config LS1X_IRQ
bool "Loongson-1 Interrupt Controller"
depends on MACH_LOONGSON32
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index b6acbca2248b..87b49a10962c 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -99,6 +99,7 @@ obj-$(CONFIG_RISCV_INTC) += irq-riscv-intc.o
obj-$(CONFIG_SIFIVE_PLIC) += irq-sifive-plic.o
obj-$(CONFIG_IMX_IRQSTEER) += irq-imx-irqsteer.o
obj-$(CONFIG_IMX_INTMUX) += irq-imx-intmux.o
+obj-$(CONFIG_IMX_MU_MSI) += irq-imx-mu-msi.o
obj-$(CONFIG_MADERA_IRQ) += irq-madera.o
obj-$(CONFIG_LS1X_IRQ) += irq-ls1x.o
obj-$(CONFIG_TI_SCI_INTR_IRQCHIP) += irq-ti-sci-intr.o
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 262658fd5f9e..34d58567b78d 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -978,7 +978,7 @@ static int __gic_update_rdist_properties(struct redist_region *region,
u64 typer = gic_read_typer(ptr + GICR_TYPER);
u32 ctlr = readl_relaxed(ptr + GICR_CTLR);
- /* Boot-time cleanip */
+ /* Boot-time cleanup */
if ((typer & GICR_TYPER_VLPIS) && (typer & GICR_TYPER_RVPEID)) {
u64 val;
diff --git a/drivers/irqchip/irq-imx-mu-msi.c b/drivers/irqchip/irq-imx-mu-msi.c
new file mode 100644
index 000000000000..229039eda1b1
--- /dev/null
+++ b/drivers/irqchip/irq-imx-mu-msi.c
@@ -0,0 +1,453 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Freescale MU used as MSI controller
+ *
+ * Copyright (c) 2018 Pengutronix, Oleksij Rempel <o.rempel@pengutronix.de>
+ * Copyright 2022 NXP
+ * Frank Li <Frank.Li@nxp.com>
+ * Peng Fan <peng.fan@nxp.com>
+ *
+ * Based on drivers/mailbox/imx-mailbox.c
+ */
+
+#include <linux/clk.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/irqdomain.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/msi.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm_domain.h>
+#include <linux/spinlock.h>
+
+#define IMX_MU_CHANS 4
+
+enum imx_mu_xcr {
+ IMX_MU_GIER,
+ IMX_MU_GCR,
+ IMX_MU_TCR,
+ IMX_MU_RCR,
+ IMX_MU_xCR_MAX,
+};
+
+enum imx_mu_xsr {
+ IMX_MU_SR,
+ IMX_MU_GSR,
+ IMX_MU_TSR,
+ IMX_MU_RSR,
+ IMX_MU_xSR_MAX
+};
+
+enum imx_mu_type {
+ IMX_MU_V2 = BIT(1),
+};
+
+/* Receive Interrupt Enable */
+#define IMX_MU_xCR_RIEn(data, x) ((data->cfg->type) & IMX_MU_V2 ? BIT(x) : BIT(24 + (3 - (x))))
+#define IMX_MU_xSR_RFn(data, x) ((data->cfg->type) & IMX_MU_V2 ? BIT(x) : BIT(24 + (3 - (x))))
+
+struct imx_mu_dcfg {
+ enum imx_mu_type type;
+ u32 xTR; /* Transmit Register0 */
+ u32 xRR; /* Receive Register0 */
+ u32 xSR[IMX_MU_xSR_MAX]; /* Status Registers */
+ u32 xCR[IMX_MU_xCR_MAX]; /* Control Registers */
+};
+
+struct imx_mu_msi {
+ raw_spinlock_t lock;
+ struct irq_domain *msi_domain;
+ void __iomem *regs;
+ phys_addr_t msiir_addr;
+ const struct imx_mu_dcfg *cfg;
+ unsigned long used;
+ struct clk *clk;
+};
+
+static void imx_mu_write(struct imx_mu_msi *msi_data, u32 val, u32 offs)
+{
+ iowrite32(val, msi_data->regs + offs);
+}
+
+static u32 imx_mu_read(struct imx_mu_msi *msi_data, u32 offs)
+{
+ return ioread32(msi_data->regs + offs);
+}
+
+static u32 imx_mu_xcr_rmw(struct imx_mu_msi *msi_data, enum imx_mu_xcr type, u32 set, u32 clr)
+{
+ unsigned long flags;
+ u32 val;
+
+ raw_spin_lock_irqsave(&msi_data->lock, flags);
+ val = imx_mu_read(msi_data, msi_data->cfg->xCR[type]);
+ val &= ~clr;
+ val |= set;
+ imx_mu_write(msi_data, val, msi_data->cfg->xCR[type]);
+ raw_spin_unlock_irqrestore(&msi_data->lock, flags);
+
+ return val;
+}
+
+static void imx_mu_msi_parent_mask_irq(struct irq_data *data)
+{
+ struct imx_mu_msi *msi_data = irq_data_get_irq_chip_data(data);
+
+ imx_mu_xcr_rmw(msi_data, IMX_MU_RCR, 0, IMX_MU_xCR_RIEn(msi_data, data->hwirq));
+}
+
+static void imx_mu_msi_parent_unmask_irq(struct irq_data *data)
+{
+ struct imx_mu_msi *msi_data = irq_data_get_irq_chip_data(data);
+
+ imx_mu_xcr_rmw(msi_data, IMX_MU_RCR, IMX_MU_xCR_RIEn(msi_data, data->hwirq), 0);
+}
+
+static void imx_mu_msi_parent_ack_irq(struct irq_data *data)
+{
+ struct imx_mu_msi *msi_data = irq_data_get_irq_chip_data(data);
+
+ imx_mu_read(msi_data, msi_data->cfg->xRR + data->hwirq * 4);
+}
+
+static struct irq_chip imx_mu_msi_irq_chip = {
+ .name = "MU-MSI",
+ .irq_ack = irq_chip_ack_parent,
+};
+
+static struct msi_domain_ops imx_mu_msi_irq_ops = {
+};
+
+static struct msi_domain_info imx_mu_msi_domain_info = {
+ .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
+ .ops = &imx_mu_msi_irq_ops,
+ .chip = &imx_mu_msi_irq_chip,
+};
+
+static void imx_mu_msi_parent_compose_msg(struct irq_data *data,
+ struct msi_msg *msg)
+{
+ struct imx_mu_msi *msi_data = irq_data_get_irq_chip_data(data);
+ u64 addr = msi_data->msiir_addr + 4 * data->hwirq;
+
+ msg->address_hi = upper_32_bits(addr);
+ msg->address_lo = lower_32_bits(addr);
+ msg->data = data->hwirq;
+}
+
+static int imx_mu_msi_parent_set_affinity(struct irq_data *irq_data,
+ const struct cpumask *mask, bool force)
+{
+ return -EINVAL;
+}
+
+static struct irq_chip imx_mu_msi_parent_chip = {
+ .name = "MU",
+ .irq_mask = imx_mu_msi_parent_mask_irq,
+ .irq_unmask = imx_mu_msi_parent_unmask_irq,
+ .irq_ack = imx_mu_msi_parent_ack_irq,
+ .irq_compose_msi_msg = imx_mu_msi_parent_compose_msg,
+ .irq_set_affinity = imx_mu_msi_parent_set_affinity,
+};
+
+static int imx_mu_msi_domain_irq_alloc(struct irq_domain *domain,
+ unsigned int virq,
+ unsigned int nr_irqs,
+ void *args)
+{
+ struct imx_mu_msi *msi_data = domain->host_data;
+ unsigned long flags;
+ int pos, err = 0;
+
+ WARN_ON(nr_irqs != 1);
+
+ raw_spin_lock_irqsave(&msi_data->lock, flags);
+ pos = find_first_zero_bit(&msi_data->used, IMX_MU_CHANS);
+ if (pos < IMX_MU_CHANS)
+ __set_bit(pos, &msi_data->used);
+ else
+ err = -ENOSPC;
+ raw_spin_unlock_irqrestore(&msi_data->lock, flags);
+
+ if (err)
+ return err;
+
+ irq_domain_set_info(domain, virq, pos,
+ &imx_mu_msi_parent_chip, msi_data,
+ handle_edge_irq, NULL, NULL);
+ return 0;
+}
+
+static void imx_mu_msi_domain_irq_free(struct irq_domain *domain,
+ unsigned int virq, unsigned int nr_irqs)
+{
+ struct irq_data *d = irq_domain_get_irq_data(domain, virq);
+ struct imx_mu_msi *msi_data = irq_data_get_irq_chip_data(d);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&msi_data->lock, flags);
+ __clear_bit(d->hwirq, &msi_data->used);
+ raw_spin_unlock_irqrestore(&msi_data->lock, flags);
+}
+
+static const struct irq_domain_ops imx_mu_msi_domain_ops = {
+ .alloc = imx_mu_msi_domain_irq_alloc,
+ .free = imx_mu_msi_domain_irq_free,
+};
+
+static void imx_mu_msi_irq_handler(struct irq_desc *desc)
+{
+ struct imx_mu_msi *msi_data = irq_desc_get_handler_data(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ u32 status;
+ int i;
+
+ status = imx_mu_read(msi_data, msi_data->cfg->xSR[IMX_MU_RSR]);
+
+ chained_irq_enter(chip, desc);
+ for (i = 0; i < IMX_MU_CHANS; i++) {
+ if (status & IMX_MU_xSR_RFn(msi_data, i))
+ generic_handle_domain_irq(msi_data->msi_domain, i);
+ }
+ chained_irq_exit(chip, desc);
+}
+
+static int imx_mu_msi_domains_init(struct imx_mu_msi *msi_data, struct device *dev)
+{
+ struct fwnode_handle *fwnodes = dev_fwnode(dev);
+ struct irq_domain *parent;
+
+ /* Initialize MSI domain parent */
+ parent = irq_domain_create_linear(fwnodes,
+ IMX_MU_CHANS,
+ &imx_mu_msi_domain_ops,
+ msi_data);
+ if (!parent) {
+ dev_err(dev, "failed to create IRQ domain\n");
+ return -ENOMEM;
+ }
+
+ irq_domain_update_bus_token(parent, DOMAIN_BUS_NEXUS);
+
+ msi_data->msi_domain = platform_msi_create_irq_domain(fwnodes,
+ &imx_mu_msi_domain_info,
+ parent);
+
+ if (!msi_data->msi_domain) {
+ dev_err(dev, "failed to create MSI domain\n");
+ irq_domain_remove(parent);
+ return -ENOMEM;
+ }
+
+ irq_domain_set_pm_device(msi_data->msi_domain, dev);
+
+ return 0;
+}
+
+/* Register offset of different version MU IP */
+static const struct imx_mu_dcfg imx_mu_cfg_imx6sx = {
+ .type = 0,
+ .xTR = 0x0,
+ .xRR = 0x10,
+ .xSR = {
+ [IMX_MU_SR] = 0x20,
+ [IMX_MU_GSR] = 0x20,
+ [IMX_MU_TSR] = 0x20,
+ [IMX_MU_RSR] = 0x20,
+ },
+ .xCR = {
+ [IMX_MU_GIER] = 0x24,
+ [IMX_MU_GCR] = 0x24,
+ [IMX_MU_TCR] = 0x24,
+ [IMX_MU_RCR] = 0x24,
+ },
+};
+
+static const struct imx_mu_dcfg imx_mu_cfg_imx7ulp = {
+ .type = 0,
+ .xTR = 0x20,
+ .xRR = 0x40,
+ .xSR = {
+ [IMX_MU_SR] = 0x60,
+ [IMX_MU_GSR] = 0x60,
+ [IMX_MU_TSR] = 0x60,
+ [IMX_MU_RSR] = 0x60,
+ },
+ .xCR = {
+ [IMX_MU_GIER] = 0x64,
+ [IMX_MU_GCR] = 0x64,
+ [IMX_MU_TCR] = 0x64,
+ [IMX_MU_RCR] = 0x64,
+ },
+};
+
+static const struct imx_mu_dcfg imx_mu_cfg_imx8ulp = {
+ .type = IMX_MU_V2,
+ .xTR = 0x200,
+ .xRR = 0x280,
+ .xSR = {
+ [IMX_MU_SR] = 0xC,
+ [IMX_MU_GSR] = 0x118,
+ [IMX_MU_TSR] = 0x124,
+ [IMX_MU_RSR] = 0x12C,
+ },
+ .xCR = {
+ [IMX_MU_GIER] = 0x110,
+ [IMX_MU_GCR] = 0x114,
+ [IMX_MU_TCR] = 0x120,
+ [IMX_MU_RCR] = 0x128
+ },
+};
+
+static int __init imx_mu_of_init(struct device_node *dn,
+ struct device_node *parent,
+ const struct imx_mu_dcfg *cfg)
+{
+ struct platform_device *pdev = of_find_device_by_node(dn);
+ struct device_link *pd_link_a;
+ struct device_link *pd_link_b;
+ struct imx_mu_msi *msi_data;
+ struct resource *res;
+ struct device *pd_a;
+ struct device *pd_b;
+ struct device *dev;
+ int ret;
+ int irq;
+
+ dev = &pdev->dev;
+
+ msi_data = devm_kzalloc(&pdev->dev, sizeof(*msi_data), GFP_KERNEL);
+ if (!msi_data)
+ return -ENOMEM;
+
+ msi_data->cfg = cfg;
+
+ msi_data->regs = devm_platform_ioremap_resource_byname(pdev, "processor-a-side");
+ if (IS_ERR(msi_data->regs)) {
+ dev_err(&pdev->dev, "failed to initialize 'regs'\n");
+ return PTR_ERR(msi_data->regs);
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "processor-b-side");
+ if (!res)
+ return -EIO;
+
+ msi_data->msiir_addr = res->start + msi_data->cfg->xTR;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0)
+ return -ENODEV;
+
+ platform_set_drvdata(pdev, msi_data);
+
+ msi_data->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(msi_data->clk))
+ return PTR_ERR(msi_data->clk);
+
+ pd_a = dev_pm_domain_attach_by_name(dev, "processor-a-side");
+ if (IS_ERR(pd_a))
+ return PTR_ERR(pd_a);
+
+ pd_b = dev_pm_domain_attach_by_name(dev, "processor-b-side");
+ if (IS_ERR(pd_b))
+ return PTR_ERR(pd_b);
+
+ pd_link_a = device_link_add(dev, pd_a,
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+
+ if (!pd_link_a) {
+ dev_err(dev, "Failed to add device_link to mu a.\n");
+ goto err_pd_a;
+ }
+
+ pd_link_b = device_link_add(dev, pd_b,
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+
+
+ if (!pd_link_b) {
+ dev_err(dev, "Failed to add device_link to mu a.\n");
+ goto err_pd_b;
+ }
+
+ ret = imx_mu_msi_domains_init(msi_data, dev);
+ if (ret)
+ goto err_dm_init;
+
+ pm_runtime_enable(dev);
+
+ irq_set_chained_handler_and_data(irq,
+ imx_mu_msi_irq_handler,
+ msi_data);
+
+ return 0;
+
+err_dm_init:
+ device_link_remove(dev, pd_b);
+err_pd_b:
+ device_link_remove(dev, pd_a);
+err_pd_a:
+ return -EINVAL;
+}
+
+static int __maybe_unused imx_mu_runtime_suspend(struct device *dev)
+{
+ struct imx_mu_msi *priv = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(priv->clk);
+
+ return 0;
+}
+
+static int __maybe_unused imx_mu_runtime_resume(struct device *dev)
+{
+ struct imx_mu_msi *priv = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(priv->clk);
+ if (ret)
+ dev_err(dev, "failed to enable clock\n");
+
+ return ret;
+}
+
+static const struct dev_pm_ops imx_mu_pm_ops = {
+ SET_RUNTIME_PM_OPS(imx_mu_runtime_suspend,
+ imx_mu_runtime_resume, NULL)
+};
+
+static int __init imx_mu_imx7ulp_of_init(struct device_node *dn,
+ struct device_node *parent)
+{
+ return imx_mu_of_init(dn, parent, &imx_mu_cfg_imx7ulp);
+}
+
+static int __init imx_mu_imx6sx_of_init(struct device_node *dn,
+ struct device_node *parent)
+{
+ return imx_mu_of_init(dn, parent, &imx_mu_cfg_imx6sx);
+}
+
+static int __init imx_mu_imx8ulp_of_init(struct device_node *dn,
+ struct device_node *parent)
+{
+ return imx_mu_of_init(dn, parent, &imx_mu_cfg_imx8ulp);
+}
+
+IRQCHIP_PLATFORM_DRIVER_BEGIN(imx_mu_msi)
+IRQCHIP_MATCH("fsl,imx7ulp-mu-msi", imx_mu_imx7ulp_of_init)
+IRQCHIP_MATCH("fsl,imx6sx-mu-msi", imx_mu_imx6sx_of_init)
+IRQCHIP_MATCH("fsl,imx8ulp-mu-msi", imx_mu_imx8ulp_of_init)
+IRQCHIP_PLATFORM_DRIVER_END(imx_mu_msi, .pm = &imx_mu_pm_ops)
+
+
+MODULE_AUTHOR("Frank Li <Frank.Li@nxp.com>");
+MODULE_DESCRIPTION("Freescale MU MSI controller driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/irqchip/irq-ls-extirq.c b/drivers/irqchip/irq-ls-extirq.c
index 853b3972dbe7..d8d48b1f7c29 100644
--- a/drivers/irqchip/irq-ls-extirq.c
+++ b/drivers/irqchip/irq-ls-extirq.c
@@ -6,8 +6,7 @@
#include <linux/irqchip.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
-#include <linux/mfd/syscon.h>
-#include <linux/regmap.h>
+#include <linux/of_address.h>
#include <linux/slab.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
@@ -16,13 +15,41 @@
#define LS1021A_SCFGREVCR 0x200
struct ls_extirq_data {
- struct regmap *syscon;
- u32 intpcr;
+ void __iomem *intpcr;
+ raw_spinlock_t lock;
+ bool big_endian;
bool is_ls1021a_or_ls1043a;
u32 nirq;
struct irq_fwspec map[MAXIRQ];
};
+static void ls_extirq_intpcr_rmw(struct ls_extirq_data *priv, u32 mask,
+ u32 value)
+{
+ u32 intpcr;
+
+ /*
+ * Serialize concurrent calls to ls_extirq_set_type() from multiple
+ * IRQ descriptors, making sure the read-modify-write is atomic.
+ */
+ raw_spin_lock(&priv->lock);
+
+ if (priv->big_endian)
+ intpcr = ioread32be(priv->intpcr);
+ else
+ intpcr = ioread32(priv->intpcr);
+
+ intpcr &= ~mask;
+ intpcr |= value;
+
+ if (priv->big_endian)
+ iowrite32be(intpcr, priv->intpcr);
+ else
+ iowrite32(intpcr, priv->intpcr);
+
+ raw_spin_unlock(&priv->lock);
+}
+
static int
ls_extirq_set_type(struct irq_data *data, unsigned int type)
{
@@ -51,7 +78,8 @@ ls_extirq_set_type(struct irq_data *data, unsigned int type)
default:
return -EINVAL;
}
- regmap_update_bits(priv->syscon, priv->intpcr, mask, value);
+
+ ls_extirq_intpcr_rmw(priv, mask, value);
return irq_chip_set_type_parent(data, type);
}
@@ -143,7 +171,6 @@ ls_extirq_parse_map(struct ls_extirq_data *priv, struct device_node *node)
static int __init
ls_extirq_of_init(struct device_node *node, struct device_node *parent)
{
-
struct irq_domain *domain, *parent_domain;
struct ls_extirq_data *priv;
int ret;
@@ -151,40 +178,52 @@ ls_extirq_of_init(struct device_node *node, struct device_node *parent)
parent_domain = irq_find_host(parent);
if (!parent_domain) {
pr_err("Cannot find parent domain\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_irq_find_host;
}
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- priv->syscon = syscon_node_to_regmap(node->parent);
- if (IS_ERR(priv->syscon)) {
- ret = PTR_ERR(priv->syscon);
- pr_err("Failed to lookup parent regmap\n");
- goto out;
+ if (!priv) {
+ ret = -ENOMEM;
+ goto err_alloc_priv;
}
- ret = of_property_read_u32(node, "reg", &priv->intpcr);
- if (ret) {
- pr_err("Missing INTPCR offset value\n");
- goto out;
+
+ /*
+ * All extirq OF nodes are under a scfg/syscon node with
+ * the 'ranges' property
+ */
+ priv->intpcr = of_iomap(node, 0);
+ if (!priv->intpcr) {
+ pr_err("Cannot ioremap OF node %pOF\n", node);
+ ret = -ENOMEM;
+ goto err_iomap;
}
ret = ls_extirq_parse_map(priv, node);
if (ret)
- goto out;
+ goto err_parse_map;
+ priv->big_endian = of_device_is_big_endian(parent);
priv->is_ls1021a_or_ls1043a = of_device_is_compatible(node, "fsl,ls1021a-extirq") ||
of_device_is_compatible(node, "fsl,ls1043a-extirq");
+ raw_spin_lock_init(&priv->lock);
domain = irq_domain_add_hierarchy(parent_domain, 0, priv->nirq, node,
&extirq_domain_ops, priv);
- if (!domain)
+ if (!domain) {
ret = -ENOMEM;
+ goto err_add_hierarchy;
+ }
-out:
- if (ret)
- kfree(priv);
+ return 0;
+
+err_add_hierarchy:
+err_parse_map:
+ iounmap(priv->intpcr);
+err_iomap:
+ kfree(priv);
+err_alloc_priv:
+err_irq_find_host:
return ret;
}
diff --git a/drivers/irqchip/irq-realtek-rtl.c b/drivers/irqchip/irq-realtek-rtl.c
index 56bf502d9c67..2a349082af81 100644
--- a/drivers/irqchip/irq-realtek-rtl.c
+++ b/drivers/irqchip/irq-realtek-rtl.c
@@ -21,11 +21,33 @@
#define RTL_ICTL_IRR2 0x10
#define RTL_ICTL_IRR3 0x14
+#define RTL_ICTL_NUM_INPUTS 32
+
#define REG(x) (realtek_ictl_base + x)
static DEFINE_RAW_SPINLOCK(irq_lock);
static void __iomem *realtek_ictl_base;
+/*
+ * IRR0-IRR3 store 4 bits per interrupt, but Realtek uses inverted numbering,
+ * placing IRQ 31 in the first four bits. A routing value of '0' means the
+ * interrupt is left disconnected. Routing values {1..15} connect to output
+ * lines {0..14}.
+ */
+#define IRR_OFFSET(idx) (4 * (3 - (idx * 4) / 32))
+#define IRR_SHIFT(idx) ((idx * 4) % 32)
+
+static void write_irr(void __iomem *irr0, int idx, u32 value)
+{
+ unsigned int offset = IRR_OFFSET(idx);
+ unsigned int shift = IRR_SHIFT(idx);
+ u32 irr;
+
+ irr = readl(irr0 + offset) & ~(0xf << shift);
+ irr |= (value & 0xf) << shift;
+ writel(irr, irr0 + offset);
+}
+
static void realtek_ictl_unmask_irq(struct irq_data *i)
{
unsigned long flags;
@@ -62,8 +84,14 @@ static struct irq_chip realtek_ictl_irq = {
static int intc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
{
+ unsigned long flags;
+
irq_set_chip_and_handler(irq, &realtek_ictl_irq, handle_level_irq);
+ raw_spin_lock_irqsave(&irq_lock, flags);
+ write_irr(REG(RTL_ICTL_IRR0), hw, 1);
+ raw_spin_unlock_irqrestore(&irq_lock, flags);
+
return 0;
}
@@ -95,90 +123,50 @@ out:
chained_irq_exit(chip, desc);
}
-/*
- * SoC interrupts are cascaded to MIPS CPU interrupts according to the
- * interrupt-map in the device tree. Each SoC interrupt gets 4 bits for
- * the CPU interrupt in an Interrupt Routing Register. Max 32 SoC interrupts
- * thus go into 4 IRRs. A routing value of '0' means the interrupt is left
- * disconnected. Routing values {1..15} connect to output lines {0..14}.
- */
-static int __init map_interrupts(struct device_node *node, struct irq_domain *domain)
-{
- struct device_node *cpu_ictl;
- const __be32 *imap;
- u32 imaplen, soc_int, cpu_int, tmp, regs[4];
- int ret, i, irr_regs[] = {
- RTL_ICTL_IRR3,
- RTL_ICTL_IRR2,
- RTL_ICTL_IRR1,
- RTL_ICTL_IRR0,
- };
- u8 mips_irqs_set;
-
- ret = of_property_read_u32(node, "#address-cells", &tmp);
- if (ret || tmp)
- return -EINVAL;
-
- imap = of_get_property(node, "interrupt-map", &imaplen);
- if (!imap || imaplen % 3)
- return -EINVAL;
-
- mips_irqs_set = 0;
- memset(regs, 0, sizeof(regs));
- for (i = 0; i < imaplen; i += 3 * sizeof(u32)) {
- soc_int = be32_to_cpup(imap);
- if (soc_int > 31)
- return -EINVAL;
-
- cpu_ictl = of_find_node_by_phandle(be32_to_cpup(imap + 1));
- if (!cpu_ictl)
- return -EINVAL;
- ret = of_property_read_u32(cpu_ictl, "#interrupt-cells", &tmp);
- of_node_put(cpu_ictl);
- if (ret || tmp != 1)
- return -EINVAL;
-
- cpu_int = be32_to_cpup(imap + 2);
- if (cpu_int > 7 || cpu_int < 2)
- return -EINVAL;
-
- if (!(mips_irqs_set & BIT(cpu_int))) {
- irq_set_chained_handler_and_data(cpu_int, realtek_irq_dispatch,
- domain);
- mips_irqs_set |= BIT(cpu_int);
- }
-
- /* Use routing values (1..6) for CPU interrupts (2..7) */
- regs[(soc_int * 4) / 32] |= (cpu_int - 1) << (soc_int * 4) % 32;
- imap += 3;
- }
-
- for (i = 0; i < 4; i++)
- writel(regs[i], REG(irr_regs[i]));
-
- return 0;
-}
-
static int __init realtek_rtl_of_init(struct device_node *node, struct device_node *parent)
{
+ struct of_phandle_args oirq;
struct irq_domain *domain;
- int ret;
+ unsigned int soc_irq;
+ int parent_irq;
realtek_ictl_base = of_iomap(node, 0);
if (!realtek_ictl_base)
return -ENXIO;
- /* Disable all cascaded interrupts */
+ /* Disable all cascaded interrupts and clear routing */
writel(0, REG(RTL_ICTL_GIMR));
+ for (soc_irq = 0; soc_irq < RTL_ICTL_NUM_INPUTS; soc_irq++)
+ write_irr(REG(RTL_ICTL_IRR0), soc_irq, 0);
+
+ if (WARN_ON(!of_irq_count(node))) {
+ /*
+ * If DT contains no parent interrupts, assume MIPS CPU IRQ 2
+ * (HW0) is connected to the first output. This is the case for
+ * all known hardware anyway. "interrupt-map" is deprecated, so
+ * don't bother trying to parse that.
+ */
+ oirq.np = of_find_compatible_node(NULL, NULL, "mti,cpu-interrupt-controller");
+ oirq.args_count = 1;
+ oirq.args[0] = 2;
+
+ parent_irq = irq_create_of_mapping(&oirq);
+
+ of_node_put(oirq.np);
+ } else {
+ parent_irq = of_irq_get(node, 0);
+ }
- domain = irq_domain_add_simple(node, 32, 0,
- &irq_domain_ops, NULL);
+ if (parent_irq < 0)
+ return parent_irq;
+ else if (!parent_irq)
+ return -ENODEV;
- ret = map_interrupts(node, domain);
- if (ret) {
- pr_err("invalid interrupt map\n");
- return ret;
- }
+ domain = irq_domain_add_linear(node, RTL_ICTL_NUM_INPUTS, &irq_domain_ops, NULL);
+ if (!domain)
+ return -ENOMEM;
+
+ irq_set_chained_handler_and_data(parent_irq, realtek_irq_dispatch, domain);
return 0;
}
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index ecf65237b263..6be896871718 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -639,7 +639,7 @@ static bool do_amd_gpio_irq_handler(int irq, void *dev_id)
if (!(regval & PIN_IRQ_PENDING) ||
!(regval & BIT(INTERRUPT_MASK_OFF)))
continue;
- generic_handle_domain_irq(gc->irq.domain, irqnr + i);
+ generic_handle_domain_irq_safe(gc->irq.domain, irqnr + i);
/* Clear interrupt.
* We must read the pin register again, in case the
diff --git a/drivers/platform/x86/intel/int0002_vgpio.c b/drivers/platform/x86/intel/int0002_vgpio.c
index 617dbf98980e..97cfbc520a02 100644
--- a/drivers/platform/x86/intel/int0002_vgpio.c
+++ b/drivers/platform/x86/intel/int0002_vgpio.c
@@ -125,8 +125,7 @@ static irqreturn_t int0002_irq(int irq, void *data)
if (!(gpe_sts_reg & GPE0A_PME_B0_STS_BIT))
return IRQ_NONE;
- generic_handle_irq(irq_find_mapping(chip->irq.domain,
- GPE0A_PME_B0_VIRT_GPIO_PIN));
+ generic_handle_domain_irq_safe(chip->irq.domain, GPE0A_PME_B0_VIRT_GPIO_PIN);
pm_wakeup_hard_event(chip->parent);
diff --git a/drivers/ssb/driver_gpio.c b/drivers/ssb/driver_gpio.c
index 2de3896489c8..897cb8db5084 100644
--- a/drivers/ssb/driver_gpio.c
+++ b/drivers/ssb/driver_gpio.c
@@ -132,7 +132,8 @@ static irqreturn_t ssb_gpio_irq_chipco_handler(int irq, void *dev_id)
return IRQ_NONE;
for_each_set_bit(gpio, &irqs, bus->gpio.ngpio)
- generic_handle_irq(ssb_gpio_to_irq(&bus->gpio, gpio));
+ generic_handle_domain_irq_safe(bus->irq_domain, gpio);
+
ssb_chipco_gpio_polarity(chipco, irqs, val & irqs);
return IRQ_HANDLED;
@@ -330,7 +331,8 @@ static irqreturn_t ssb_gpio_irq_extif_handler(int irq, void *dev_id)
return IRQ_NONE;
for_each_set_bit(gpio, &irqs, bus->gpio.ngpio)
- generic_handle_irq(ssb_gpio_to_irq(&bus->gpio, gpio));
+ generic_handle_domain_irq_safe(bus->irq_domain, gpio);
+
ssb_extif_gpio_polarity(extif, irqs, val & irqs);
return IRQ_HANDLED;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 02:07:50 +0000