summaryrefslogtreecommitdiff
path: root/drivers/gpio
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/devres.c2
-rw-r--r--drivers/gpio/gpio-bt8xx.c3
-rw-r--r--drivers/gpio/gpio-lynxpoint.c18
-rw-r--r--drivers/gpio/gpio-zynq.c36
-rw-r--r--drivers/gpio/gpiolib-acpi.c5
-rw-r--r--drivers/gpio/gpiolib-of.c4
-rw-r--r--drivers/gpio/gpiolib.c4
7 files changed, 54 insertions, 18 deletions
diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c
index 41b2f40578d5..954b9f6b0ef8 100644
--- a/drivers/gpio/devres.c
+++ b/drivers/gpio/devres.c
@@ -90,7 +90,7 @@ struct gpio_desc *__must_check __devm_gpiod_get_index(struct device *dev,
struct gpio_desc **dr;
struct gpio_desc *desc;
- dr = devres_alloc(devm_gpiod_release, sizeof(struct gpiod_desc *),
+ dr = devres_alloc(devm_gpiod_release, sizeof(struct gpio_desc *),
GFP_KERNEL);
if (!dr)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/gpio/gpio-bt8xx.c b/drivers/gpio/gpio-bt8xx.c
index 6557147d9331..7e4c43c18960 100644
--- a/drivers/gpio/gpio-bt8xx.c
+++ b/drivers/gpio/gpio-bt8xx.c
@@ -241,9 +241,6 @@ static void bt8xxgpio_remove(struct pci_dev *pdev)
bgwrite(~0x0, BT848_INT_STAT);
bgwrite(0x0, BT848_GPIO_OUT_EN);
- iounmap(bg->mmio);
- release_mem_region(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
pci_disable_device(pdev);
}
diff --git a/drivers/gpio/gpio-lynxpoint.c b/drivers/gpio/gpio-lynxpoint.c
index ff9eb911b5e4..fa945ec9ccff 100644
--- a/drivers/gpio/gpio-lynxpoint.c
+++ b/drivers/gpio/gpio-lynxpoint.c
@@ -407,9 +407,27 @@ static int lp_gpio_runtime_resume(struct device *dev)
return 0;
}
+static int lp_gpio_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct lp_gpio *lg = platform_get_drvdata(pdev);
+ unsigned long reg;
+ int i;
+
+ /* on some hardware suspend clears input sensing, re-enable it here */
+ for (i = 0; i < lg->chip.ngpio; i++) {
+ if (gpiochip_is_requested(&lg->chip, i) != NULL) {
+ reg = lp_gpio_reg(&lg->chip, i, LP_CONFIG2);
+ outl(inl(reg) & ~GPINDIS_BIT, reg);
+ }
+ }
+ return 0;
+}
+
static const struct dev_pm_ops lp_gpio_pm_ops = {
.runtime_suspend = lp_gpio_runtime_suspend,
.runtime_resume = lp_gpio_runtime_resume,
+ .resume = lp_gpio_resume,
};
static const struct acpi_device_id lynxpoint_gpio_acpi_match[] = {
diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c
index c3145f91fda3..31ad5df5dbc9 100644
--- a/drivers/gpio/gpio-zynq.c
+++ b/drivers/gpio/gpio-zynq.c
@@ -95,6 +95,9 @@ struct zynq_gpio {
struct clk *clk;
};
+static struct irq_chip zynq_gpio_level_irqchip;
+static struct irq_chip zynq_gpio_edge_irqchip;
+
/**
* zynq_gpio_get_bank_pin - Get the bank number and pin number within that bank
* for a given pin in the GPIO device
@@ -410,6 +413,15 @@ static int zynq_gpio_set_irq_type(struct irq_data *irq_data, unsigned int type)
gpio->base_addr + ZYNQ_GPIO_INTPOL_OFFSET(bank_num));
writel_relaxed(int_any,
gpio->base_addr + ZYNQ_GPIO_INTANY_OFFSET(bank_num));
+
+ if (type & IRQ_TYPE_LEVEL_MASK) {
+ __irq_set_chip_handler_name_locked(irq_data->irq,
+ &zynq_gpio_level_irqchip, handle_fasteoi_irq, NULL);
+ } else {
+ __irq_set_chip_handler_name_locked(irq_data->irq,
+ &zynq_gpio_edge_irqchip, handle_level_irq, NULL);
+ }
+
return 0;
}
@@ -424,9 +436,21 @@ static int zynq_gpio_set_wake(struct irq_data *data, unsigned int on)
}
/* irq chip descriptor */
-static struct irq_chip zynq_gpio_irqchip = {
+static struct irq_chip zynq_gpio_level_irqchip = {
.name = DRIVER_NAME,
.irq_enable = zynq_gpio_irq_enable,
+ .irq_eoi = zynq_gpio_irq_ack,
+ .irq_mask = zynq_gpio_irq_mask,
+ .irq_unmask = zynq_gpio_irq_unmask,
+ .irq_set_type = zynq_gpio_set_irq_type,
+ .irq_set_wake = zynq_gpio_set_wake,
+ .flags = IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED,
+};
+
+static struct irq_chip zynq_gpio_edge_irqchip = {
+ .name = DRIVER_NAME,
+ .irq_enable = zynq_gpio_irq_enable,
+ .irq_ack = zynq_gpio_irq_ack,
.irq_mask = zynq_gpio_irq_mask,
.irq_unmask = zynq_gpio_irq_unmask,
.irq_set_type = zynq_gpio_set_irq_type,
@@ -469,10 +493,6 @@ static void zynq_gpio_irqhandler(unsigned int irq, struct irq_desc *desc)
offset);
generic_handle_irq(gpio_irq);
}
-
- /* clear IRQ in HW */
- writel_relaxed(int_sts, gpio->base_addr +
- ZYNQ_GPIO_INTSTS_OFFSET(bank_num));
}
}
@@ -610,14 +630,14 @@ static int zynq_gpio_probe(struct platform_device *pdev)
writel_relaxed(ZYNQ_GPIO_IXR_DISABLE_ALL, gpio->base_addr +
ZYNQ_GPIO_INTDIS_OFFSET(bank_num));
- ret = gpiochip_irqchip_add(chip, &zynq_gpio_irqchip, 0,
- handle_simple_irq, IRQ_TYPE_NONE);
+ ret = gpiochip_irqchip_add(chip, &zynq_gpio_edge_irqchip, 0,
+ handle_level_irq, IRQ_TYPE_NONE);
if (ret) {
dev_err(&pdev->dev, "Failed to add irq chip\n");
goto err_rm_gpiochip;
}
- gpiochip_set_chained_irqchip(chip, &zynq_gpio_irqchip, irq,
+ gpiochip_set_chained_irqchip(chip, &zynq_gpio_edge_irqchip, irq,
zynq_gpio_irqhandler);
pm_runtime_set_active(&pdev->dev);
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index d62eaaa75397..687476fb39e3 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -377,8 +377,10 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,
struct gpio_chip *chip = achip->chip;
struct acpi_resource_gpio *agpio;
struct acpi_resource *ares;
+ int pin_index = (int)address;
acpi_status status;
bool pull_up;
+ int length;
int i;
status = acpi_buffer_to_resource(achip->conn_info.connection,
@@ -400,7 +402,8 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,
return AE_BAD_PARAMETER;
}
- for (i = 0; i < agpio->pin_table_length; i++) {
+ length = min(agpio->pin_table_length, (u16)(pin_index + bits));
+ for (i = pin_index; i < length; ++i) {
unsigned pin = agpio->pin_table[i];
struct acpi_gpio_connection *conn;
struct gpio_desc *desc;
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 7cfdc2278905..604dbe60bdee 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -307,7 +307,5 @@ void of_gpiochip_add(struct gpio_chip *chip)
void of_gpiochip_remove(struct gpio_chip *chip)
{
gpiochip_remove_pin_ranges(chip);
-
- if (chip->of_node)
- of_node_put(chip->of_node);
+ of_node_put(chip->of_node);
}
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 15cc0bb65dda..c68d037de656 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -413,12 +413,12 @@ void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip,
return;
}
- irq_set_chained_handler(parent_irq, parent_handler);
/*
* The parent irqchip is already using the chip_data for this
* irqchip, so our callbacks simply use the handler_data.
*/
irq_set_handler_data(parent_irq, gpiochip);
+ irq_set_chained_handler(parent_irq, parent_handler);
}
EXPORT_SYMBOL_GPL(gpiochip_set_chained_irqchip);
@@ -1674,7 +1674,7 @@ struct gpio_desc *__must_check __gpiod_get_index(struct device *dev,
set_bit(FLAG_OPEN_SOURCE, &desc->flags);
/* No particular flag request, return here... */
- if (flags & GPIOD_FLAGS_BIT_DIR_SET)
+ if (!(flags & GPIOD_FLAGS_BIT_DIR_SET))
return desc;
/* Process flags */
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-27 13:11:21 +0300