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-rw-r--r--drivers/acpi/Makefile8
-rw-r--r--drivers/acpi/gsi.c21
-rw-r--r--drivers/acpi/pci_irq.c3
-rw-r--r--drivers/acpi/pci_link.c132
-rw-r--r--drivers/acpi/resource.c26
-rw-r--r--drivers/acpi/sbs.c6
-rw-r--r--drivers/gpio/gpiolib-acpi.c33
-rw-r--r--drivers/gpio/gpiolib.c4
-rw-r--r--drivers/gpio/gpiolib.h3
-rw-r--r--drivers/spi/spi.c3
-rw-r--r--include/linux/acpi.h1
11 files changed, 165 insertions, 75 deletions
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index c6f236f..cb648a4 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -8,13 +8,13 @@ ccflags-$(CONFIG_ACPI_DEBUG) += -DACPI_DEBUG_OUTPUT
#
# ACPI Boot-Time Table Parsing
#
-obj-y += tables.o
+obj-$(CONFIG_ACPI) += tables.o
obj-$(CONFIG_X86) += blacklist.o
#
# ACPI Core Subsystem (Interpreter)
#
-obj-y += acpi.o \
+obj-$(CONFIG_ACPI) += acpi.o \
acpica/
# All the builtin files are in the "acpi." module_param namespace.
@@ -66,10 +66,10 @@ obj-$(CONFIG_ACPI_FAN) += fan.o
obj-$(CONFIG_ACPI_VIDEO) += video.o
obj-$(CONFIG_ACPI_PCI_SLOT) += pci_slot.o
obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
-obj-y += container.o
+obj-$(CONFIG_ACPI) += container.o
obj-$(CONFIG_ACPI_THERMAL) += thermal.o
obj-$(CONFIG_ACPI_NFIT) += nfit.o
-obj-y += acpi_memhotplug.o
+obj-$(CONFIG_ACPI) += acpi_memhotplug.o
obj-$(CONFIG_ACPI_HOTPLUG_IOAPIC) += ioapic.o
obj-$(CONFIG_ACPI_BATTERY) += battery.o
obj-$(CONFIG_ACPI_SBS) += sbshc.o
diff --git a/drivers/acpi/gsi.c b/drivers/acpi/gsi.c
index fa4585a..ee9e0f2 100644
--- a/drivers/acpi/gsi.c
+++ b/drivers/acpi/gsi.c
@@ -17,25 +17,6 @@ enum acpi_irq_model_id acpi_irq_model;
static struct fwnode_handle *acpi_gsi_domain_id;
-static unsigned int acpi_gsi_get_irq_type(int trigger, int polarity)
-{
- switch (polarity) {
- case ACPI_ACTIVE_LOW:
- return trigger == ACPI_EDGE_SENSITIVE ?
- IRQ_TYPE_EDGE_FALLING :
- IRQ_TYPE_LEVEL_LOW;
- case ACPI_ACTIVE_HIGH:
- return trigger == ACPI_EDGE_SENSITIVE ?
- IRQ_TYPE_EDGE_RISING :
- IRQ_TYPE_LEVEL_HIGH;
- case ACPI_ACTIVE_BOTH:
- if (trigger == ACPI_EDGE_SENSITIVE)
- return IRQ_TYPE_EDGE_BOTH;
- default:
- return IRQ_TYPE_NONE;
- }
-}
-
/**
* acpi_gsi_to_irq() - Retrieve the linux irq number for a given GSI
* @gsi: GSI IRQ number to map
@@ -82,7 +63,7 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger,
fwspec.fwnode = acpi_gsi_domain_id;
fwspec.param[0] = gsi;
- fwspec.param[1] = acpi_gsi_get_irq_type(trigger, polarity);
+ fwspec.param[1] = acpi_dev_get_irq_type(trigger, polarity);
fwspec.param_count = 2;
return irq_create_fwspec_mapping(&fwspec);
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index c933675..d30184c 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -131,9 +131,6 @@ static void do_prt_fixups(struct acpi_prt_entry *entry,
quirk = &prt_quirks[i];
/* All current quirks involve link devices, not GSIs */
- if (!prt->source)
- continue;
-
if (dmi_check_system(quirk->system) &&
entry->id.segment == quirk->segment &&
entry->id.bus == quirk->bus &&
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 7c8408b..fa28635 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -4,6 +4,7 @@
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
* Copyright (C) 2002 Dominik Brodowski <devel@brodo.de>
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
@@ -67,12 +68,12 @@ static struct acpi_scan_handler pci_link_handler = {
* later even the link is disable. Instead, we just repick the active irq
*/
struct acpi_pci_link_irq {
- u8 active; /* Current IRQ */
+ u32 active; /* Current IRQ */
u8 triggering; /* All IRQs */
u8 polarity; /* All IRQs */
u8 resource_type;
u8 possible_count;
- u8 possible[ACPI_PCI_LINK_MAX_POSSIBLE];
+ u32 possible[ACPI_PCI_LINK_MAX_POSSIBLE];
u8 initialized:1;
u8 reserved:7;
};
@@ -437,7 +438,6 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
* enabled system.
*/
-#define ACPI_MAX_IRQS 256
#define ACPI_MAX_ISA_IRQ 16
#define PIRQ_PENALTY_PCI_AVAILABLE (0)
@@ -447,7 +447,7 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
#define PIRQ_PENALTY_ISA_USED (16*16*16*16*16)
#define PIRQ_PENALTY_ISA_ALWAYS (16*16*16*16*16*16)
-static int acpi_irq_penalty[ACPI_MAX_IRQS] = {
+static int acpi_irq_isa_penalty[ACPI_MAX_ISA_IRQ] = {
PIRQ_PENALTY_ISA_ALWAYS, /* IRQ0 timer */
PIRQ_PENALTY_ISA_ALWAYS, /* IRQ1 keyboard */
PIRQ_PENALTY_ISA_ALWAYS, /* IRQ2 cascade */
@@ -464,9 +464,68 @@ static int acpi_irq_penalty[ACPI_MAX_IRQS] = {
PIRQ_PENALTY_ISA_USED, /* IRQ13 fpe, sometimes */
PIRQ_PENALTY_ISA_USED, /* IRQ14 ide0 */
PIRQ_PENALTY_ISA_USED, /* IRQ15 ide1 */
- /* >IRQ15 */
};
+struct irq_penalty_info {
+ int irq;
+ int penalty;
+ struct list_head node;
+};
+
+static LIST_HEAD(acpi_irq_penalty_list);
+
+static int acpi_irq_get_penalty(int irq)
+{
+ struct irq_penalty_info *irq_info;
+
+ if (irq < ACPI_MAX_ISA_IRQ)
+ return acpi_irq_isa_penalty[irq];
+
+ list_for_each_entry(irq_info, &acpi_irq_penalty_list, node) {
+ if (irq_info->irq == irq)
+ return irq_info->penalty;
+ }
+
+ return 0;
+}
+
+static int acpi_irq_set_penalty(int irq, int new_penalty)
+{
+ struct irq_penalty_info *irq_info;
+
+ /* see if this is a ISA IRQ */
+ if (irq < ACPI_MAX_ISA_IRQ) {
+ acpi_irq_isa_penalty[irq] = new_penalty;
+ return 0;
+ }
+
+ /* next, try to locate from the dynamic list */
+ list_for_each_entry(irq_info, &acpi_irq_penalty_list, node) {
+ if (irq_info->irq == irq) {
+ irq_info->penalty = new_penalty;
+ return 0;
+ }
+ }
+
+ /* nope, let's allocate a slot for this IRQ */
+ irq_info = kzalloc(sizeof(*irq_info), GFP_KERNEL);
+ if (!irq_info)
+ return -ENOMEM;
+
+ irq_info->irq = irq;
+ irq_info->penalty = new_penalty;
+ list_add_tail(&irq_info->node, &acpi_irq_penalty_list);
+
+ return 0;
+}
+
+static void acpi_irq_add_penalty(int irq, int penalty)
+{
+ int curpen = acpi_irq_get_penalty(irq);
+
+ acpi_irq_set_penalty(irq, curpen + penalty);
+}
+
int __init acpi_irq_penalty_init(void)
{
struct acpi_pci_link *link;
@@ -487,15 +546,16 @@ int __init acpi_irq_penalty_init(void)
link->irq.possible_count;
for (i = 0; i < link->irq.possible_count; i++) {
- if (link->irq.possible[i] < ACPI_MAX_ISA_IRQ)
- acpi_irq_penalty[link->irq.
- possible[i]] +=
- penalty;
+ if (link->irq.possible[i] < ACPI_MAX_ISA_IRQ) {
+ int irqpos = link->irq.possible[i];
+
+ acpi_irq_add_penalty(irqpos, penalty);
+ }
}
} else if (link->irq.active) {
- acpi_irq_penalty[link->irq.active] +=
- PIRQ_PENALTY_PCI_POSSIBLE;
+ acpi_irq_add_penalty(link->irq.active,
+ PIRQ_PENALTY_PCI_POSSIBLE);
}
}
@@ -547,12 +607,12 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
* the use of IRQs 9, 10, 11, and >15.
*/
for (i = (link->irq.possible_count - 1); i >= 0; i--) {
- if (acpi_irq_penalty[irq] >
- acpi_irq_penalty[link->irq.possible[i]])
+ if (acpi_irq_get_penalty(irq) >
+ acpi_irq_get_penalty(link->irq.possible[i]))
irq = link->irq.possible[i];
}
}
- if (acpi_irq_penalty[irq] >= PIRQ_PENALTY_ISA_ALWAYS) {
+ if (acpi_irq_get_penalty(irq) >= PIRQ_PENALTY_ISA_ALWAYS) {
printk(KERN_ERR PREFIX "No IRQ available for %s [%s]. "
"Try pci=noacpi or acpi=off\n",
acpi_device_name(link->device),
@@ -568,7 +628,8 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
acpi_device_bid(link->device));
return -ENODEV;
} else {
- acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING;
+ acpi_irq_add_penalty(link->irq.active, PIRQ_PENALTY_PCI_USING);
+
printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
acpi_device_name(link->device),
acpi_device_bid(link->device), link->irq.active);
@@ -778,7 +839,7 @@ static void acpi_pci_link_remove(struct acpi_device *device)
}
/*
- * modify acpi_irq_penalty[] from cmdline
+ * modify penalty from cmdline
*/
static int __init acpi_irq_penalty_update(char *str, int used)
{
@@ -796,13 +857,10 @@ static int __init acpi_irq_penalty_update(char *str, int used)
if (irq < 0)
continue;
- if (irq >= ARRAY_SIZE(acpi_irq_penalty))
- continue;
-
if (used)
- acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
+ acpi_irq_add_penalty(irq, PIRQ_PENALTY_ISA_USED);
else
- acpi_irq_penalty[irq] = PIRQ_PENALTY_PCI_AVAILABLE;
+ acpi_irq_set_penalty(irq, PIRQ_PENALTY_PCI_AVAILABLE);
if (retval != 2) /* no next number */
break;
@@ -819,18 +877,15 @@ static int __init acpi_irq_penalty_update(char *str, int used)
*/
void acpi_penalize_isa_irq(int irq, int active)
{
- if (irq >= 0 && irq < ARRAY_SIZE(acpi_irq_penalty)) {
- if (active)
- acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
- else
- acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
- }
+ if (irq >= 0)
+ acpi_irq_add_penalty(irq, active ?
+ PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING);
}
bool acpi_isa_irq_available(int irq)
{
- return irq >= 0 && (irq >= ARRAY_SIZE(acpi_irq_penalty) ||
- acpi_irq_penalty[irq] < PIRQ_PENALTY_ISA_ALWAYS);
+ return irq >= 0 &&
+ (acpi_irq_get_penalty(irq) < PIRQ_PENALTY_ISA_ALWAYS);
}
/*
@@ -840,13 +895,18 @@ bool acpi_isa_irq_available(int irq)
*/
void acpi_penalize_sci_irq(int irq, int trigger, int polarity)
{
- if (irq >= 0 && irq < ARRAY_SIZE(acpi_irq_penalty)) {
- if (trigger != ACPI_MADT_TRIGGER_LEVEL ||
- polarity != ACPI_MADT_POLARITY_ACTIVE_LOW)
- acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_ALWAYS;
- else
- acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
- }
+ int penalty;
+
+ if (irq < 0)
+ return;
+
+ if (trigger != ACPI_MADT_TRIGGER_LEVEL ||
+ polarity != ACPI_MADT_POLARITY_ACTIVE_LOW)
+ penalty = PIRQ_PENALTY_ISA_ALWAYS;
+ else
+ penalty = PIRQ_PENALTY_PCI_USING;
+
+ acpi_irq_add_penalty(irq, penalty);
}
/*
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index cdc5c25..d02fd53 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -23,6 +23,7 @@
#include <linux/export.h>
#include <linux/ioport.h>
#include <linux/slab.h>
+#include <linux/irq.h>
#ifdef CONFIG_X86
#define valid_IRQ(i) (((i) != 0) && ((i) != 2))
@@ -336,6 +337,31 @@ unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable)
}
EXPORT_SYMBOL_GPL(acpi_dev_irq_flags);
+/**
+ * acpi_dev_get_irq_type - Determine irq type.
+ * @triggering: Triggering type as provided by ACPI.
+ * @polarity: Interrupt polarity as provided by ACPI.
+ */
+unsigned int acpi_dev_get_irq_type(int triggering, int polarity)
+{
+ switch (polarity) {
+ case ACPI_ACTIVE_LOW:
+ return triggering == ACPI_EDGE_SENSITIVE ?
+ IRQ_TYPE_EDGE_FALLING :
+ IRQ_TYPE_LEVEL_LOW;
+ case ACPI_ACTIVE_HIGH:
+ return triggering == ACPI_EDGE_SENSITIVE ?
+ IRQ_TYPE_EDGE_RISING :
+ IRQ_TYPE_LEVEL_HIGH;
+ case ACPI_ACTIVE_BOTH:
+ if (triggering == ACPI_EDGE_SENSITIVE)
+ return IRQ_TYPE_EDGE_BOTH;
+ default:
+ return IRQ_TYPE_NONE;
+ }
+}
+EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type);
+
static void acpi_dev_irqresource_disabled(struct resource *res, u32 gsi)
{
res->start = gsi;
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index cb3dedb..ad0b13a 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -417,11 +417,11 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery)
if ((value & 0xf000) != sel) {
value &= 0x0fff;
value |= sel;
- ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
+ ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
ACPI_SBS_MANAGER,
0x01, (u8 *)&value, 2);
- if (ret)
- goto end;
+ if (ret)
+ goto end;
}
}
ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 16a7b68..cbbb67a 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -417,10 +417,15 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data)
* ActiveLow is only specified for GpioInt resource. If
* GpioIo is used then the only way to set the flag is
* to use _DSD "gpios" property.
+ * Note: we expect here:
+ * - ACPI_ACTIVE_LOW == GPIO_ACTIVE_LOW
+ * - ACPI_ACTIVE_HIGH == GPIO_ACTIVE_HIGH
*/
- if (lookup->info.gpioint)
- lookup->info.active_low =
- agpio->polarity == ACPI_ACTIVE_LOW;
+ if (lookup->info.gpioint) {
+ lookup->info.polarity = agpio->polarity;
+ lookup->info.triggering = agpio->triggering;
+ }
+
}
return 1;
@@ -447,7 +452,7 @@ static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup,
if (info) {
*info = lookup->info;
if (lookup->active_low)
- info->active_low = lookup->active_low;
+ info->polarity = lookup->active_low;
}
return 0;
}
@@ -595,6 +600,7 @@ struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
{
int idx, i;
+ unsigned int irq_flags;
for (i = 0, idx = 0; idx <= index; i++) {
struct acpi_gpio_info info;
@@ -603,8 +609,23 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
desc = acpi_get_gpiod_by_index(adev, NULL, i, &info);
if (IS_ERR(desc))
break;
- if (info.gpioint && idx++ == index)
- return gpiod_to_irq(desc);
+ if (info.gpioint && idx++ == index) {
+ int irq = gpiod_to_irq(desc);
+
+ if (irq < 0)
+ return irq;
+
+ irq_flags = acpi_dev_get_irq_type(info.triggering,
+ info.polarity);
+
+ /* Set type if specified and different than the current one */
+ if (irq_flags != IRQ_TYPE_NONE &&
+ irq_flags != irq_get_trigger_type(irq))
+ irq_set_irq_type(irq, irq_flags);
+
+ return irq;
+ }
+
}
return -ENOENT;
}
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 4e4c308..5d8d7ab 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1879,7 +1879,7 @@ static struct gpio_desc *acpi_find_gpio(struct device *dev, const char *con_id,
return desc;
}
- if (info.active_low)
+ if (info.polarity == GPIO_ACTIVE_LOW)
*flags |= GPIO_ACTIVE_LOW;
return desc;
@@ -2217,7 +2217,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
desc = acpi_node_get_gpiod(fwnode, propname, 0, &info);
if (!IS_ERR(desc))
- active_low = info.active_low;
+ active_low = info.polarity == GPIO_ACTIVE_LOW;
}
if (IS_ERR(desc))
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 98ab08c..5ac3b88 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -26,7 +26,8 @@ struct acpi_device;
*/
struct acpi_gpio_info {
bool gpioint;
- bool active_low;
+ int polarity;
+ int triggering;
};
/* gpio suffixes used for ACPI and device tree lookup */
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index dee1cb8..151b01c 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1623,6 +1623,9 @@ static acpi_status acpi_spi_add_device(acpi_handle handle, u32 level,
return AE_OK;
}
+ if (spi->irq < 0)
+ spi->irq = acpi_dev_gpio_irq_get(adev, 0);
+
adev->power.flags.ignore_parent = true;
strlcpy(spi->modalias, acpi_device_hid(adev), sizeof(spi->modalias));
if (spi_add_device(spi)) {
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index a03a054..06ed7e5 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -389,6 +389,7 @@ bool acpi_dev_resource_address_space(struct acpi_resource *ares,
bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
struct resource_win *win);
unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable);
+unsigned int acpi_dev_get_irq_type(int triggering, int polarity);
bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
struct resource *res);
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