Commit 29eb6b7d authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'gpio-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Some GPIO fixes I've collected with the help of Bartosz.

  Nothing special about them: all are driver and kbuild fixes + some
  documentation fixes:

   - Tidy up a missed function call in the designware driver when
     converting to gpiolib irqchip

   - Fix some bitmasks in the Aspeed driver

   - Fix some kerneldoc warnings and minor bugs in the improved
     userspace API documentation

   - Revert the revert of the OMAP fix for lost edge wakeup interrupts:
     the fix needs to stay in

   - Fix a compile error when deselecting the character device

   - A bunch of IRQ fixes on the idio GPIO drivers

   - Fix an off-by-one error in the SiFive GPIO driver"

* tag 'gpio-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: sifive: Fix SiFive gpio probe
  gpio: pcie-idio-24: Enable PEX8311 interrupts
  gpio: pcie-idio-24: Fix IRQ Enable Register value
  gpio: pcie-idio-24: Fix irq mask when masking
  gpiolib: fix sysfs when cdev is not selected
  Revert "Revert "gpio: omap: Fix lost edge wake-up interrupts""
  gpio: uapi: clarify the meaning of 'empty' char arrays
  gpio: uapi: remove whitespace
  gpio: uapi: kernel-doc formatting improvements
  gpio: uapi: comment consistency
  gpio: uapi: fix kernel-doc warnings
  gpio: aspeed: fix ast2600 bank properties
  gpio: dwapb: Fix missing conversion to GPIO-lib-based IRQ-chip
parents 673cb932 b72de3ff
......@@ -1114,6 +1114,7 @@ static const struct aspeed_gpio_config ast2500_config =
static const struct aspeed_bank_props ast2600_bank_props[] = {
/* input output */
{4, 0xffffffff, 0x00ffffff}, /* Q/R/S/T */
{5, 0xffffffff, 0xffffff00}, /* U/V/W/X */
{6, 0x0000ffff, 0x0000ffff}, /* Y/Z */
{ },
......
......@@ -343,8 +343,8 @@ static int dwapb_irq_set_type(struct irq_data *d, u32 type)
#ifdef CONFIG_PM_SLEEP
static int dwapb_irq_set_wake(struct irq_data *d, unsigned int enable)
{
struct irq_chip_generic *igc = irq_data_get_irq_chip_data(d);
struct dwapb_gpio *gpio = igc->private;
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct dwapb_gpio *gpio = to_dwapb_gpio(gc);
struct dwapb_context *ctx = gpio->ports[0].ctx;
irq_hw_number_t bit = irqd_to_hwirq(d);
......
......@@ -1114,13 +1114,23 @@ static void omap_gpio_idle(struct gpio_bank *bank, bool may_lose_context)
{
struct device *dev = bank->chip.parent;
void __iomem *base = bank->base;
u32 nowake;
u32 mask, nowake;
bank->saved_datain = readl_relaxed(base + bank->regs->datain);
if (!bank->enabled_non_wakeup_gpios)
goto update_gpio_context_count;
/* Check for pending EDGE_FALLING, ignore EDGE_BOTH */
mask = bank->enabled_non_wakeup_gpios & bank->context.fallingdetect;
mask &= ~bank->context.risingdetect;
bank->saved_datain |= mask;
/* Check for pending EDGE_RISING, ignore EDGE_BOTH */
mask = bank->enabled_non_wakeup_gpios & bank->context.risingdetect;
mask &= ~bank->context.fallingdetect;
bank->saved_datain &= ~mask;
if (!may_lose_context)
goto update_gpio_context_count;
......
......@@ -28,6 +28,47 @@
#include <linux/spinlock.h>
#include <linux/types.h>
/*
* PLX PEX8311 PCI LCS_INTCSR Interrupt Control/Status
*
* Bit: Description
* 0: Enable Interrupt Sources (Bit 0)
* 1: Enable Interrupt Sources (Bit 1)
* 2: Generate Internal PCI Bus Internal SERR# Interrupt
* 3: Mailbox Interrupt Enable
* 4: Power Management Interrupt Enable
* 5: Power Management Interrupt
* 6: Slave Read Local Data Parity Check Error Enable
* 7: Slave Read Local Data Parity Check Error Status
* 8: Internal PCI Wire Interrupt Enable
* 9: PCI Express Doorbell Interrupt Enable
* 10: PCI Abort Interrupt Enable
* 11: Local Interrupt Input Enable
* 12: Retry Abort Enable
* 13: PCI Express Doorbell Interrupt Active
* 14: PCI Abort Interrupt Active
* 15: Local Interrupt Input Active
* 16: Local Interrupt Output Enable
* 17: Local Doorbell Interrupt Enable
* 18: DMA Channel 0 Interrupt Enable
* 19: DMA Channel 1 Interrupt Enable
* 20: Local Doorbell Interrupt Active
* 21: DMA Channel 0 Interrupt Active
* 22: DMA Channel 1 Interrupt Active
* 23: Built-In Self-Test (BIST) Interrupt Active
* 24: Direct Master was the Bus Master during a Master or Target Abort
* 25: DMA Channel 0 was the Bus Master during a Master or Target Abort
* 26: DMA Channel 1 was the Bus Master during a Master or Target Abort
* 27: Target Abort after internal 256 consecutive Master Retrys
* 28: PCI Bus wrote data to LCS_MBOX0
* 29: PCI Bus wrote data to LCS_MBOX1
* 30: PCI Bus wrote data to LCS_MBOX2
* 31: PCI Bus wrote data to LCS_MBOX3
*/
#define PLX_PEX8311_PCI_LCS_INTCSR 0x68
#define INTCSR_INTERNAL_PCI_WIRE BIT(8)
#define INTCSR_LOCAL_INPUT BIT(11)
/**
* struct idio_24_gpio_reg - GPIO device registers structure
* @out0_7: Read: FET Outputs 0-7
......@@ -92,6 +133,7 @@ struct idio_24_gpio_reg {
struct idio_24_gpio {
struct gpio_chip chip;
raw_spinlock_t lock;
__u8 __iomem *plx;
struct idio_24_gpio_reg __iomem *reg;
unsigned long irq_mask;
};
......@@ -334,13 +376,13 @@ static void idio_24_irq_mask(struct irq_data *data)
unsigned long flags;
const unsigned long bit_offset = irqd_to_hwirq(data) - 24;
unsigned char new_irq_mask;
const unsigned long bank_offset = bit_offset/8 * 8;
const unsigned long bank_offset = bit_offset / 8;
unsigned char cos_enable_state;
raw_spin_lock_irqsave(&idio24gpio->lock, flags);
idio24gpio->irq_mask &= BIT(bit_offset);
new_irq_mask = idio24gpio->irq_mask >> bank_offset;
idio24gpio->irq_mask &= ~BIT(bit_offset);
new_irq_mask = idio24gpio->irq_mask >> bank_offset * 8;
if (!new_irq_mask) {
cos_enable_state = ioread8(&idio24gpio->reg->cos_enable);
......@@ -363,12 +405,12 @@ static void idio_24_irq_unmask(struct irq_data *data)
unsigned long flags;
unsigned char prev_irq_mask;
const unsigned long bit_offset = irqd_to_hwirq(data) - 24;
const unsigned long bank_offset = bit_offset/8 * 8;
const unsigned long bank_offset = bit_offset / 8;
unsigned char cos_enable_state;
raw_spin_lock_irqsave(&idio24gpio->lock, flags);
prev_irq_mask = idio24gpio->irq_mask >> bank_offset;
prev_irq_mask = idio24gpio->irq_mask >> bank_offset * 8;
idio24gpio->irq_mask |= BIT(bit_offset);
if (!prev_irq_mask) {
......@@ -455,6 +497,7 @@ static int idio_24_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct device *const dev = &pdev->dev;
struct idio_24_gpio *idio24gpio;
int err;
const size_t pci_plx_bar_index = 1;
const size_t pci_bar_index = 2;
const char *const name = pci_name(pdev);
struct gpio_irq_chip *girq;
......@@ -469,12 +512,13 @@ static int idio_24_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return err;
}
err = pcim_iomap_regions(pdev, BIT(pci_bar_index), name);
err = pcim_iomap_regions(pdev, BIT(pci_plx_bar_index) | BIT(pci_bar_index), name);
if (err) {
dev_err(dev, "Unable to map PCI I/O addresses (%d)\n", err);
return err;
}
idio24gpio->plx = pcim_iomap_table(pdev)[pci_plx_bar_index];
idio24gpio->reg = pcim_iomap_table(pdev)[pci_bar_index];
idio24gpio->chip.label = name;
......@@ -504,6 +548,12 @@ static int idio_24_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* Software board reset */
iowrite8(0, &idio24gpio->reg->soft_reset);
/*
* enable PLX PEX8311 internal PCI wire interrupt and local interrupt
* input
*/
iowrite8((INTCSR_INTERNAL_PCI_WIRE | INTCSR_LOCAL_INPUT) >> 8,
idio24gpio->plx + PLX_PEX8311_PCI_LCS_INTCSR + 1);
err = devm_gpiochip_add_data(dev, &idio24gpio->chip, idio24gpio);
if (err) {
......
......@@ -183,7 +183,7 @@ static int sifive_gpio_probe(struct platform_device *pdev)
return PTR_ERR(chip->regs);
ngpio = of_irq_count(node);
if (ngpio >= SIFIVE_GPIO_MAX) {
if (ngpio > SIFIVE_GPIO_MAX) {
dev_err(dev, "Too many GPIO interrupts (max=%d)\n",
SIFIVE_GPIO_MAX);
return -ENXIO;
......
......@@ -7,22 +7,7 @@
struct gpio_device;
#ifdef CONFIG_GPIO_CDEV
int gpiolib_cdev_register(struct gpio_device *gdev, dev_t devt);
void gpiolib_cdev_unregister(struct gpio_device *gdev);
#else
static inline int gpiolib_cdev_register(struct gpio_device *gdev, dev_t devt)
{
return 0;
}
static inline void gpiolib_cdev_unregister(struct gpio_device *gdev)
{
}
#endif /* CONFIG_GPIO_CDEV */
#endif /* GPIOLIB_CDEV_H */
......@@ -480,11 +480,23 @@ static void gpiodevice_release(struct device *dev)
kfree(gdev);
}
#ifdef CONFIG_GPIO_CDEV
#define gcdev_register(gdev, devt) gpiolib_cdev_register((gdev), (devt))
#define gcdev_unregister(gdev) gpiolib_cdev_unregister((gdev))
#else
/*
* gpiolib_cdev_register() indirectly calls device_add(), which is still
* required even when cdev is not selected.
*/
#define gcdev_register(gdev, devt) device_add(&(gdev)->dev)
#define gcdev_unregister(gdev) device_del(&(gdev)->dev)
#endif
static int gpiochip_setup_dev(struct gpio_device *gdev)
{
int ret;
ret = gpiolib_cdev_register(gdev, gpio_devt);
ret = gcdev_register(gdev, gpio_devt);
if (ret)
return ret;
......@@ -500,7 +512,7 @@ static int gpiochip_setup_dev(struct gpio_device *gdev)
return 0;
err_remove_device:
gpiolib_cdev_unregister(gdev);
gcdev_unregister(gdev);
return ret;
}
......@@ -825,7 +837,7 @@ void gpiochip_remove(struct gpio_chip *gc)
* be removed, else it will be dangling until the last user is
* gone.
*/
gpiolib_cdev_unregister(gdev);
gcdev_unregister(gdev);
put_device(&gdev->dev);
}
EXPORT_SYMBOL_GPL(gpiochip_remove);
......
......@@ -26,7 +26,7 @@
* struct gpiochip_info - Information about a certain GPIO chip
* @name: the Linux kernel name of this GPIO chip
* @label: a functional name for this GPIO chip, such as a product
* number, may be empty
* number, may be empty (i.e. label[0] == '\0')
* @lines: number of GPIO lines on this chip
*/
struct gpiochip_info {
......@@ -98,7 +98,7 @@ struct gpio_v2_line_values {
* identifying which field of the attribute union is in use.
* @GPIO_V2_LINE_ATTR_ID_FLAGS: flags field is in use
* @GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES: values field is in use
* @GPIO_V2_LINE_ATTR_ID_DEBOUNCE: debounce_period_us is in use
* @GPIO_V2_LINE_ATTR_ID_DEBOUNCE: debounce_period_us field is in use
*/
enum gpio_v2_line_attr_id {
GPIO_V2_LINE_ATTR_ID_FLAGS = 1,
......@@ -110,17 +110,17 @@ enum gpio_v2_line_attr_id {
* struct gpio_v2_line_attribute - a configurable attribute of a line
* @id: attribute identifier with value from &enum gpio_v2_line_attr_id
* @padding: reserved for future use and must be zero filled
* @flags: if id is GPIO_V2_LINE_ATTR_ID_FLAGS, the flags for the GPIO
* line, with values from enum gpio_v2_line_flag, such as
* GPIO_V2_LINE_FLAG_ACTIVE_LOW, GPIO_V2_LINE_FLAG_OUTPUT etc, OR:ed
* @flags: if id is %GPIO_V2_LINE_ATTR_ID_FLAGS, the flags for the GPIO
* line, with values from &enum gpio_v2_line_flag, such as
* %GPIO_V2_LINE_FLAG_ACTIVE_LOW, %GPIO_V2_LINE_FLAG_OUTPUT etc, added
* together. This overrides the default flags contained in the &struct
* gpio_v2_line_config for the associated line.
* @values: if id is GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES, a bitmap
* @values: if id is %GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES, a bitmap
* containing the values to which the lines will be set, with each bit
* number corresponding to the index into &struct
* gpio_v2_line_request.offsets.
* @debounce_period_us: if id is GPIO_V2_LINE_ATTR_ID_DEBOUNCE, the desired
* debounce period, in microseconds
* @debounce_period_us: if id is %GPIO_V2_LINE_ATTR_ID_DEBOUNCE, the
* desired debounce period, in microseconds
*/
struct gpio_v2_line_attribute {
__u32 id;
......@@ -147,12 +147,12 @@ struct gpio_v2_line_config_attribute {
/**
* struct gpio_v2_line_config - Configuration for GPIO lines
* @flags: flags for the GPIO lines, with values from enum
* gpio_v2_line_flag, such as GPIO_V2_LINE_FLAG_ACTIVE_LOW,
* GPIO_V2_LINE_FLAG_OUTPUT etc, OR:ed together. This is the default for
* @flags: flags for the GPIO lines, with values from &enum
* gpio_v2_line_flag, such as %GPIO_V2_LINE_FLAG_ACTIVE_LOW,
* %GPIO_V2_LINE_FLAG_OUTPUT etc, added together. This is the default for
* all requested lines but may be overridden for particular lines using
* attrs.
* @num_attrs: the number of attributes in attrs
* @attrs.
* @num_attrs: the number of attributes in @attrs
* @padding: reserved for future use and must be zero filled
* @attrs: the configuration attributes associated with the requested
* lines. Any attribute should only be associated with a particular line
......@@ -175,17 +175,17 @@ struct gpio_v2_line_config {
* "my-bitbanged-relay"
* @config: requested configuration for the lines.
* @num_lines: number of lines requested in this request, i.e. the number
* of valid fields in the GPIO_V2_LINES_MAX sized arrays, set to 1 to
* of valid fields in the %GPIO_V2_LINES_MAX sized arrays, set to 1 to
* request a single line
* @event_buffer_size: a suggested minimum number of line events that the
* kernel should buffer. This is only relevant if edge detection is
* enabled in the configuration. Note that this is only a suggested value
* and the kernel may allocate a larger buffer or cap the size of the
* buffer. If this field is zero then the buffer size defaults to a minimum
* of num_lines*16.
* of @num_lines * 16.
* @padding: reserved for future use and must be zero filled
* @fd: if successful this field will contain a valid anonymous file handle
* after a GPIO_GET_LINE_IOCTL operation, zero or negative value means
* after a %GPIO_GET_LINE_IOCTL operation, zero or negative value means
* error
*/
struct gpio_v2_line_request {
......@@ -203,15 +203,16 @@ struct gpio_v2_line_request {
* struct gpio_v2_line_info - Information about a certain GPIO line
* @name: the name of this GPIO line, such as the output pin of the line on
* the chip, a rail or a pin header name on a board, as specified by the
* GPIO chip, may be empty
* GPIO chip, may be empty (i.e. name[0] == '\0')
* @consumer: a functional name for the consumer of this GPIO line as set
* by whatever is using it, will be empty if there is no current user but
* may also be empty if the consumer doesn't set this up
* @flags: flags for the GPIO line, such as GPIO_V2_LINE_FLAG_ACTIVE_LOW,
* GPIO_V2_LINE_FLAG_OUTPUT etc, OR:ed together
* @offset: the local offset on this GPIO chip, fill this in when
* requesting the line information from the kernel
* @num_attrs: the number of attributes in attrs
* @num_attrs: the number of attributes in @attrs
* @flags: flags for the GPIO lines, with values from &enum
* gpio_v2_line_flag, such as %GPIO_V2_LINE_FLAG_ACTIVE_LOW,
* %GPIO_V2_LINE_FLAG_OUTPUT etc, added together.
* @attrs: the configuration attributes associated with the line
* @padding: reserved for future use
*/
......@@ -244,7 +245,7 @@ enum gpio_v2_line_changed_type {
* of a GPIO line
* @info: updated line information
* @timestamp_ns: estimate of time of status change occurrence, in nanoseconds
* @event_type: the type of change with a value from enum
* @event_type: the type of change with a value from &enum
* gpio_v2_line_changed_type
* @padding: reserved for future use
*/
......@@ -269,10 +270,10 @@ enum gpio_v2_line_event_id {
/**
* struct gpio_v2_line_event - The actual event being pushed to userspace
* @timestamp_ns: best estimate of time of event occurrence, in nanoseconds.
* The timestamp_ns is read from CLOCK_MONOTONIC and is intended to allow the
* accurate measurement of the time between events. It does not provide
* The @timestamp_ns is read from %CLOCK_MONOTONIC and is intended to allow
* the accurate measurement of the time between events. It does not provide
* the wall-clock time.
* @id: event identifier with value from enum gpio_v2_line_event_id
* @id: event identifier with value from &enum gpio_v2_line_event_id
* @offset: the offset of the line that triggered the event
* @seqno: the sequence number for this event in the sequence of events for
* all the lines in this line request
......@@ -291,7 +292,7 @@ struct gpio_v2_line_event {
};
/*
* ABI v1
* ABI v1
*
* This version of the ABI is deprecated.
* Use the latest version of the ABI, defined above, instead.
......@@ -314,13 +315,13 @@ struct gpio_v2_line_event {
* @flags: various flags for this line
* @name: the name of this GPIO line, such as the output pin of the line on the
* chip, a rail or a pin header name on a board, as specified by the gpio
* chip, may be empty
* chip, may be empty (i.e. name[0] == '\0')
* @consumer: a functional name for the consumer of this GPIO line as set by
* whatever is using it, will be empty if there is no current user but may
* also be empty if the consumer doesn't set this up
*
* This struct is part of ABI v1 and is deprecated.
* Use struct gpio_v2_line_info instead.
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_info instead.
*/
struct gpioline_info {
__u32 line_offset;
......@@ -344,17 +345,18 @@ enum {
* of a GPIO line
* @info: updated line information
* @timestamp: estimate of time of status change occurrence, in nanoseconds
* @event_type: one of GPIOLINE_CHANGED_REQUESTED, GPIOLINE_CHANGED_RELEASED
* and GPIOLINE_CHANGED_CONFIG
* @event_type: one of %GPIOLINE_CHANGED_REQUESTED,
* %GPIOLINE_CHANGED_RELEASED and %GPIOLINE_CHANGED_CONFIG
* @padding: reserved for future use
*
* Note: struct gpioline_info embedded here has 32-bit alignment on its own,
* The &struct gpioline_info embedded here has 32-bit alignment on its own,
* but it works fine with 64-bit alignment too. With its 72 byte size, we can
* guarantee there are no implicit holes between it and subsequent members.
* The 20-byte padding at the end makes sure we don't add any implicit padding
* at the end of the structure on 64-bit architectures.
*
* This struct is part of ABI v1 and is deprecated.
* Use struct gpio_v2_line_info_changed instead.
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_info_changed instead.
*/
struct gpioline_info_changed {
struct gpioline_info info;
......@@ -378,13 +380,13 @@ struct gpioline_info_changed {
* @lineoffsets: an array of desired lines, specified by offset index for the
* associated GPIO device
* @flags: desired flags for the desired GPIO lines, such as
* GPIOHANDLE_REQUEST_OUTPUT, GPIOHANDLE_REQUEST_ACTIVE_LOW etc, OR:ed
* %GPIOHANDLE_REQUEST_OUTPUT, %GPIOHANDLE_REQUEST_ACTIVE_LOW etc, added
* together. Note that even if multiple lines are requested, the same flags
* must be applicable to all of them, if you want lines with individual
* flags set, request them one by one. It is possible to select
* a batch of input or output lines, but they must all have the same
* characteristics, i.e. all inputs or all outputs, all active low etc
* @default_values: if the GPIOHANDLE_REQUEST_OUTPUT is set for a requested
* @default_values: if the %GPIOHANDLE_REQUEST_OUTPUT is set for a requested
* line, this specifies the default output value, should be 0 (low) or
* 1 (high), anything else than 0 or 1 will be interpreted as 1 (high)
* @consumer_label: a desired consumer label for the selected GPIO line(s)
......@@ -392,11 +394,11 @@ struct gpioline_info_changed {
* @lines: number of lines requested in this request, i.e. the number of
* valid fields in the above arrays, set to 1 to request a single line
* @fd: if successful this field will contain a valid anonymous file handle
* after a GPIO_GET_LINEHANDLE_IOCTL operation, zero or negative value
* after a %GPIO_GET_LINEHANDLE_IOCTL operation, zero or negative value
* means error
*
* This struct is part of ABI v1 and is deprecated.
* Use struct gpio_v2_line_request instead.
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_request instead.
*/
struct gpiohandle_request {
__u32 lineoffsets[GPIOHANDLES_MAX];
......@@ -410,15 +412,15 @@ struct gpiohandle_request {
/**
* struct gpiohandle_config - Configuration for a GPIO handle request
* @flags: updated flags for the requested GPIO lines, such as
* GPIOHANDLE_REQUEST_OUTPUT, GPIOHANDLE_REQUEST_ACTIVE_LOW etc, OR:ed
* %GPIOHANDLE_REQUEST_OUTPUT, %GPIOHANDLE_REQUEST_ACTIVE_LOW etc, added
* together
* @default_values: if the GPIOHANDLE_REQUEST_OUTPUT is set in flags,
* @default_values: if the %GPIOHANDLE_REQUEST_OUTPUT is set in flags,
* this specifies the default output value, should be 0 (low) or
* 1 (high), anything else than 0 or 1 will be interpreted as 1 (high)
* @padding: reserved for future use and should be zero filled
*
* This struct is part of ABI v1 and is deprecated.
* Use struct gpio_v2_line_config instead.
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_config instead.
*/
struct gpiohandle_config {
__u32 flags;
......@@ -432,8 +434,8 @@ struct gpiohandle_config {
* state of a line, when setting the state of lines these should contain
* the desired target state
*
* This struct is part of ABI v1 and is deprecated.
* Use struct gpio_v2_line_values instead.
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_values instead.
*/
struct gpiohandle_data {
__u8 values[GPIOHANDLES_MAX];
......@@ -449,17 +451,17 @@ struct gpiohandle_data {
* @lineoffset: the desired line to subscribe to events from, specified by
* offset index for the associated GPIO device
* @handleflags: desired handle flags for the desired GPIO line, such as
* GPIOHANDLE_REQUEST_ACTIVE_LOW or GPIOHANDLE_REQUEST_OPEN_DRAIN
* %GPIOHANDLE_REQUEST_ACTIVE_LOW or %GPIOHANDLE_REQUEST_OPEN_DRAIN
* @eventflags: desired flags for the desired GPIO event line, such as
* GPIOEVENT_REQUEST_RISING_EDGE or GPIOEVENT_REQUEST_FALLING_EDGE
* %GPIOEVENT_REQUEST_RISING_EDGE or %GPIOEVENT_REQUEST_FALLING_EDGE
* @consumer_label: a desired consumer label for the selected GPIO line(s)
* such as "my-listener"
* @fd: if successful this field will contain a valid anonymous file handle
* after a GPIO_GET_LINEEVENT_IOCTL operation, zero or negative value
* after a %GPIO_GET_LINEEVENT_IOCTL operation, zero or negative value
* means error
*
* This struct is part of ABI v1 and is deprecated.
* Use struct gpio_v2_line_request instead.
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_request instead.
*/
struct gpioevent_request {
__u32 lineoffset;
......@@ -469,7 +471,7 @@ struct gpioevent_request {
int fd;
};
/**
/*
* GPIO event types
*/
#define GPIOEVENT_EVENT_RISING_EDGE 0x01
......@@ -480,8 +482,8 @@ struct gpioevent_request {
* @timestamp: best estimate of time of event occurrence, in nanoseconds
* @id: event identifier
*
* This struct is part of ABI v1 and is deprecated.
* Use struct gpio_v2_line_event instead.
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_event instead.
*/
struct gpioevent_data {
__u64 timestamp;
......
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