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Merge branches 'acpi-pci', 'acpi-irq' and 'acpi-assorted'

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* acpi-pci:
  ACPI, PCI, irq: remove redundant check for null string pointer
  ACPI / PCI: Simplify acpi_penalize_isa_irq()
  ACPI, PCI, irq: remove interrupt number restriction
  ACPI, PCI, irq: remove interrupt count restriction

* acpi-irq:
  ACPI / spi: attach GPIO IRQ from ACPI description to SPI device
  ACPI / gpio: Add irq_type when a GPIO is used as an interrupt
  ACPI: Rename acpi_gsi_get_irq_type to acpi_dev_get_irq_type and export symbol

* acpi-assorted:
  ACPI / SBS: fix inconsistent indenting inside if statement
  ACPI: Fix build errors due objects compiled unconditionally
This commit is contained in:
Rafael J. Wysocki 2016-01-12 01:10:19 +01:00
commit 476cc4333a
11 changed files with 165 additions and 75 deletions
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8
drivers/acpi/Makefile
View File

@ -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

21
drivers/acpi/gsi.c
View File

@ -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);

3
drivers/acpi/pci_irq.c
View File

@ -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 &&

132
drivers/acpi/pci_link.c
View File

@ -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);
}
/*

26
drivers/acpi/resource.c
View File

@ -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;

6
drivers/acpi/sbs.c
View File

@ -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,

33
drivers/gpio/gpiolib-acpi.c
View File

@ -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;
}

4
drivers/gpio/gpiolib.c
View File

@ -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))

3
drivers/gpio/gpiolib.h
View File

@ -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 */

3
drivers/spi/spi.c
View File

@ -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)) {

1
include/linux/acpi.h
View File

@ -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);