diff options
| -rw-r--r-- | Documentation/driver-api/gpio/index.rst | 2 | ||||
| -rw-r--r-- | Documentation/translations/zh_CN/driver-api/gpio/index.rst | 2 | ||||
| -rw-r--r-- | MAINTAINERS | 2 | ||||
| -rw-r--r-- | drivers/gpio/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib-acpi-core.c (renamed from drivers/gpio/gpiolib-acpi.c) | 522 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib-acpi-quirks.c | 363 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.h | 15 | ||||
| -rw-r--r-- | drivers/platform/x86/intel/int0002_vgpio.c | 2 | ||||
| -rw-r--r-- | include/linux/gpio/consumer.h | 2 |
9 files changed, 486 insertions, 425 deletions
diff --git a/Documentation/driver-api/gpio/index.rst b/Documentation/driver-api/gpio/index.rst index 34b57cee3391..43f6a3afe10b 100644 --- a/Documentation/driver-api/gpio/index.rst +++ b/Documentation/driver-api/gpio/index.rst @@ -27,7 +27,7 @@ Core ACPI support ============ -.. kernel-doc:: drivers/gpio/gpiolib-acpi.c +.. kernel-doc:: drivers/gpio/gpiolib-acpi-core.c :export: Device tree support diff --git a/Documentation/translations/zh_CN/driver-api/gpio/index.rst b/Documentation/translations/zh_CN/driver-api/gpio/index.rst index e4d54724a1b5..f64a69f771ca 100644 --- a/Documentation/translations/zh_CN/driver-api/gpio/index.rst +++ b/Documentation/translations/zh_CN/driver-api/gpio/index.rst @@ -42,7 +42,7 @@ ACPI支持 该API在以下内核代码中: -drivers/gpio/gpiolib-acpi.c +drivers/gpio/gpiolib-acpi-core.c 设备树支持 ========== diff --git a/MAINTAINERS b/MAINTAINERS index 4531cd6a789d..c715452d6d26 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -10115,7 +10115,7 @@ L: linux-acpi@vger.kernel.org S: Supported T: git git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel.git F: Documentation/firmware-guide/acpi/gpio-properties.rst -F: drivers/gpio/gpiolib-acpi.c +F: drivers/gpio/gpiolib-acpi-*.c F: drivers/gpio/gpiolib-acpi.h GPIO AGGREGATOR diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 1abae4477ed7..88dedd298256 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_OF_GPIO) += gpiolib-of.o obj-$(CONFIG_GPIO_CDEV) += gpiolib-cdev.o obj-$(CONFIG_GPIO_SYSFS) += gpiolib-sysfs.o obj-$(CONFIG_GPIO_ACPI) += gpiolib-acpi.o +gpiolib-acpi-y := gpiolib-acpi-core.o gpiolib-acpi-quirks.o obj-$(CONFIG_GPIOLIB) += gpiolib-swnode.o # Device drivers. Generally keep list sorted alphabetically diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi-core.c index 69caa35c58df..12b24a717e43 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi-core.c @@ -23,29 +23,6 @@ #include "gpiolib.h" #include "gpiolib-acpi.h" -static int run_edge_events_on_boot = -1; -module_param(run_edge_events_on_boot, int, 0444); -MODULE_PARM_DESC(run_edge_events_on_boot, - "Run edge _AEI event-handlers at boot: 0=no, 1=yes, -1=auto"); - -static char *ignore_wake; -module_param(ignore_wake, charp, 0444); -MODULE_PARM_DESC(ignore_wake, - "controller@pin combos on which to ignore the ACPI wake flag " - "ignore_wake=controller@pin[,controller@pin[,...]]"); - -static char *ignore_interrupt; -module_param(ignore_interrupt, charp, 0444); -MODULE_PARM_DESC(ignore_interrupt, - "controller@pin combos on which to ignore interrupt " - "ignore_interrupt=controller@pin[,controller@pin[,...]]"); - -struct acpi_gpiolib_dmi_quirk { - bool no_edge_events_on_boot; - char *ignore_wake; - char *ignore_interrupt; -}; - /** * struct acpi_gpio_event - ACPI GPIO event handler data * @@ -96,10 +73,10 @@ struct acpi_gpio_chip { * @adev: reference to ACPI device which consumes GPIO resource * @flags: GPIO initialization flags * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo + * @wake_capable: wake capability as provided by ACPI * @pin_config: pin bias as provided by ACPI * @polarity: interrupt polarity as provided by ACPI * @triggering: triggering type as provided by ACPI - * @wake_capable: wake capability as provided by ACPI * @debounce: debounce timeout as provided by ACPI * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping */ @@ -107,25 +84,14 @@ struct acpi_gpio_info { struct acpi_device *adev; enum gpiod_flags flags; bool gpioint; + bool wake_capable; int pin_config; int polarity; int triggering; - bool wake_capable; unsigned int debounce; unsigned int quirks; }; -/* - * For GPIO chips which call acpi_gpiochip_request_interrupts() before late_init - * (so builtin drivers) we register the ACPI GpioInt IRQ handlers from a - * late_initcall_sync() handler, so that other builtin drivers can register their - * OpRegions before the event handlers can run. This list contains GPIO chips - * for which the acpi_gpiochip_request_irqs() call has been deferred. - */ -static DEFINE_MUTEX(acpi_gpio_deferred_req_irqs_lock); -static LIST_HEAD(acpi_gpio_deferred_req_irqs_list); -static bool acpi_gpio_deferred_req_irqs_done; - static int acpi_gpiochip_find(struct gpio_chip *gc, const void *data) { /* First check the actual GPIO device */ @@ -268,7 +234,7 @@ static void acpi_gpiochip_request_irq(struct acpi_gpio_chip *acpi_gpio, event->irq_requested = true; /* Make sure we trigger the initial state of edge-triggered IRQs */ - if (run_edge_events_on_boot && + if (acpi_gpio_need_run_edge_events_on_boot() && (event->irqflags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING))) { value = gpiod_get_raw_value_cansleep(event->desc); if (((event->irqflags & IRQF_TRIGGER_RISING) && value == 1) || @@ -350,42 +316,6 @@ static struct gpio_desc *acpi_request_own_gpiod(struct gpio_chip *chip, return desc; } -static bool acpi_gpio_in_ignore_list(const char *ignore_list, const char *controller_in, - unsigned int pin_in) -{ - const char *controller, *pin_str; - unsigned int pin; - char *endp; - int len; - - controller = ignore_list; - while (controller) { - pin_str = strchr(controller, '@'); - if (!pin_str) - goto err; - - len = pin_str - controller; - if (len == strlen(controller_in) && - strncmp(controller, controller_in, len) == 0) { - pin = simple_strtoul(pin_str + 1, &endp, 10); - if (*endp != 0 && *endp != ',') - goto err; - - if (pin == pin_in) - return true; - } - - controller = strchr(controller, ','); - if (controller) - controller++; - } - - return false; -err: - pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_...: %s\n", ignore_list); - return false; -} - static bool acpi_gpio_irq_is_wake(struct device *parent, const struct acpi_resource_gpio *agpio) { @@ -394,7 +324,7 @@ static bool acpi_gpio_irq_is_wake(struct device *parent, if (agpio->wake_capable != ACPI_WAKE_CAPABLE) return false; - if (acpi_gpio_in_ignore_list(ignore_wake, dev_name(parent), pin)) { + if (acpi_gpio_in_ignore_list(ACPI_GPIO_IGNORE_WAKE, dev_name(parent), pin)) { dev_info(parent, "Ignoring wakeup on pin %u\n", pin); return false; } @@ -437,7 +367,7 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares, if (!handler) return AE_OK; - if (acpi_gpio_in_ignore_list(ignore_interrupt, dev_name(chip->parent), pin)) { + if (acpi_gpio_in_ignore_list(ACPI_GPIO_IGNORE_INTERRUPT, dev_name(chip->parent), pin)) { dev_info(chip->parent, "Ignoring interrupt on pin %u\n", pin); return AE_OK; } @@ -525,7 +455,6 @@ void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) struct acpi_gpio_chip *acpi_gpio; acpi_handle handle; acpi_status status; - bool defer; if (!chip->parent || !chip->to_irq) return; @@ -544,14 +473,7 @@ void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) acpi_walk_resources(handle, METHOD_NAME__AEI, acpi_gpiochip_alloc_event, acpi_gpio); - mutex_lock(&acpi_gpio_deferred_req_irqs_lock); - defer = !acpi_gpio_deferred_req_irqs_done; - if (defer) - list_add(&acpi_gpio->deferred_req_irqs_list_entry, - &acpi_gpio_deferred_req_irqs_list); - mutex_unlock(&acpi_gpio_deferred_req_irqs_lock); - - if (defer) + if (acpi_gpio_add_to_deferred_list(&acpi_gpio->deferred_req_irqs_list_entry)) return; acpi_gpiochip_request_irqs(acpi_gpio); @@ -583,10 +505,7 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) if (ACPI_FAILURE(status)) return; - mutex_lock(&acpi_gpio_deferred_req_irqs_lock); - if (!list_empty(&acpi_gpio->deferred_req_irqs_list_entry)) - list_del_init(&acpi_gpio->deferred_req_irqs_list_entry); - mutex_unlock(&acpi_gpio_deferred_req_irqs_lock); + acpi_gpio_remove_from_deferred_list(&acpi_gpio->deferred_req_irqs_list_entry); list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) { if (event->irq_requested) { @@ -604,6 +523,14 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) } EXPORT_SYMBOL_GPL(acpi_gpiochip_free_interrupts); +void __init acpi_gpio_process_deferred_list(struct list_head *list) +{ + struct acpi_gpio_chip *acpi_gpio, *tmp; + + list_for_each_entry_safe(acpi_gpio, tmp, list, deferred_req_irqs_list_entry) + acpi_gpiochip_request_irqs(acpi_gpio); +} + int acpi_dev_add_driver_gpios(struct acpi_device *adev, const struct acpi_gpio_mapping *gpios) { @@ -653,12 +580,12 @@ static bool acpi_get_driver_gpio_data(struct acpi_device *adev, for (gm = adev->driver_gpios; gm->name; gm++) if (!strcmp(name, gm->name) && gm->data && index < gm->size) { - const struct acpi_gpio_params *par = gm->data + index; + const struct acpi_gpio_params *params = gm->data + index; args->fwnode = acpi_fwnode_handle(adev); - args->args[0] = par->crs_entry_index; - args->args[1] = par->line_index; - args->args[2] = par->active_low; + args->args[0] = params->crs_entry_index; + args->args[1] = params->line_index; + args->args[2] = params->active_low; args->nargs = 3; *quirks = gm->quirks; @@ -743,10 +670,8 @@ static int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags, } struct acpi_gpio_lookup { - struct acpi_gpio_info info; - int index; - u16 pin_index; - bool active_low; + struct acpi_gpio_params params; + struct acpi_gpio_info *info; struct gpio_desc *desc; int n; }; @@ -754,6 +679,8 @@ struct acpi_gpio_lookup { static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) { struct acpi_gpio_lookup *lookup = data; + struct acpi_gpio_params *params = &lookup->params; + struct acpi_gpio_info *info = lookup->info; if (ares->type != ACPI_RESOURCE_TYPE_GPIO) return 1; @@ -764,26 +691,26 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) struct gpio_desc *desc; u16 pin_index; - if (lookup->info.quirks & ACPI_GPIO_QUIRK_ONLY_GPIOIO && gpioint) - lookup->index++; + if (info->quirks & ACPI_GPIO_QUIRK_ONLY_GPIOIO && gpioint) + params->crs_entry_index++; - if (lookup->n++ != lookup->index) + if (lookup->n++ != params->crs_entry_index) return 1; - pin_index = lookup->pin_index; + pin_index = params->line_index; if (pin_index >= agpio->pin_table_length) return 1; - if (lookup->info.quirks & ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER) + if (info->quirks & ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER) desc = gpio_to_desc(agpio->pin_table[pin_index]); else desc = acpi_get_gpiod(agpio->resource_source.string_ptr, agpio->pin_table[pin_index]); lookup->desc = desc; - lookup->info.pin_config = agpio->pin_config; - lookup->info.debounce = agpio->debounce_timeout; - lookup->info.gpioint = gpioint; - lookup->info.wake_capable = acpi_gpio_irq_is_wake(&lookup->info.adev->dev, agpio); + info->pin_config = agpio->pin_config; + info->debounce = agpio->debounce_timeout; + info->gpioint = gpioint; + info->wake_capable = acpi_gpio_irq_is_wake(&info->adev->dev, agpio); /* * Polarity and triggering are only specified for GpioInt @@ -792,23 +719,23 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) * - ACPI_ACTIVE_LOW == GPIO_ACTIVE_LOW * - ACPI_ACTIVE_HIGH == GPIO_ACTIVE_HIGH */ - if (lookup->info.gpioint) { - lookup->info.polarity = agpio->polarity; - lookup->info.triggering = agpio->triggering; + if (info->gpioint) { + info->polarity = agpio->polarity; + info->triggering = agpio->triggering; } else { - lookup->info.polarity = lookup->active_low; + info->polarity = params->active_low; } - lookup->info.flags = acpi_gpio_to_gpiod_flags(agpio, lookup->info.polarity); + info->flags = acpi_gpio_to_gpiod_flags(agpio, info->polarity); } return 1; } -static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup, - struct acpi_gpio_info *info) +static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup) { - struct acpi_device *adev = lookup->info.adev; + struct acpi_gpio_info *info = lookup->info; + struct acpi_device *adev = info->adev; struct list_head res_list; int ret; @@ -825,22 +752,22 @@ static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup, if (!lookup->desc) return -ENOENT; - if (info) - *info = lookup->info; return 0; } -static int acpi_gpio_property_lookup(struct fwnode_handle *fwnode, - const char *propname, int index, +static int acpi_gpio_property_lookup(struct fwnode_handle *fwnode, const char *propname, struct acpi_gpio_lookup *lookup) { struct fwnode_reference_args args; + struct acpi_gpio_params *params = &lookup->params; + struct acpi_gpio_info *info = lookup->info; + unsigned int index = params->crs_entry_index; unsigned int quirks = 0; int ret; memset(&args, 0, sizeof(args)); - ret = __acpi_node_get_property_reference(fwnode, propname, index, 3, - &args); + + ret = __acpi_node_get_property_reference(fwnode, propname, index, 3, &args); if (ret) { struct acpi_device *adev; @@ -857,12 +784,12 @@ static int acpi_gpio_property_lookup(struct fwnode_handle *fwnode, if (args.nargs != 3) return -EPROTO; - lookup->index = args.args[0]; - lookup->pin_index = args.args[1]; - lookup->active_low = !!args.args[2]; + params->crs_entry_index = args.args[0]; + params->line_index = args.args[1]; + params->active_low = !!args.args[2]; - lookup->info.adev = to_acpi_device_node(args.fwnode); - lookup->info.quirks = quirks; + info->adev = to_acpi_device_node(args.fwnode); + info->quirks = quirks; return 0; } @@ -871,96 +798,83 @@ static int acpi_gpio_property_lookup(struct fwnode_handle *fwnode, * acpi_get_gpiod_by_index() - get a GPIO descriptor from device resources * @adev: pointer to a ACPI device to get GPIO from * @propname: Property name of the GPIO (optional) - * @index: index of GpioIo/GpioInt resource (starting from %0) - * @info: info pointer to fill in (optional) + * @lookup: pointer to struct acpi_gpio_lookup to fill in * - * Function goes through ACPI resources for @adev and based on @index looks + * Function goes through ACPI resources for @adev and based on @lookup.index looks * up a GpioIo/GpioInt resource, translates it to the Linux GPIO descriptor, - * and returns it. @index matches GpioIo/GpioInt resources only so if there - * are total %3 GPIO resources, the index goes from %0 to %2. + * and returns it. @lookup.index matches GpioIo/GpioInt resources only so if there + * are total 3 GPIO resources, the index goes from 0 to 2. * * If @propname is specified the GPIO is looked using device property. In * that case @index is used to select the GPIO entry in the property value * (in case of multiple). * * Returns: - * GPIO descriptor to use with Linux generic GPIO API. - * If the GPIO cannot be translated or there is an error an ERR_PTR is - * returned. + * 0 on success, negative errno on failure. + * + * The @lookup is filled with GPIO descriptor to use with Linux generic GPIO API. + * If the GPIO cannot be translated an error will be returned. * * Note: if the GPIO resource has multiple entries in the pin list, this * function only returns the first. */ -static struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev, - const char *propname, - int index, - struct acpi_gpio_info *info) +static int acpi_get_gpiod_by_index(struct acpi_device *adev, const char *propname, + struct acpi_gpio_lookup *lookup) { - struct acpi_gpio_lookup lookup; + struct acpi_gpio_params *params = &lookup->params; + struct acpi_gpio_info *info = lookup->info; int ret; - memset(&lookup, 0, sizeof(lookup)); - lookup.index = index; - if (propname) { dev_dbg(&adev->dev, "GPIO: looking up %s\n", propname); - ret = acpi_gpio_property_lookup(acpi_fwnode_handle(adev), - propname, index, &lookup); + ret = acpi_gpio_property_lookup(acpi_fwnode_handle(adev), propname, lookup); if (ret) - return ERR_PTR(ret); + return ret; - dev_dbg(&adev->dev, "GPIO: _DSD returned %s %d %u %u\n", - dev_name(&lookup.info.adev->dev), lookup.index, - lookup.pin_index, lookup.active_low); + dev_dbg(&adev->dev, "GPIO: _DSD returned %s %u %u %u\n", + dev_name(&info->adev->dev), + params->crs_entry_index, params->line_index, params->active_low); } else { - dev_dbg(&adev->dev, "GPIO: looking up %d in _CRS\n", index); - lookup.info.adev = adev; + dev_dbg(&adev->dev, "GPIO: looking up %u in _CRS\n", params->crs_entry_index); + info->adev = adev; } - ret = acpi_gpio_resource_lookup(&lookup, info); - return ret ? ERR_PTR(ret) : lookup.desc; + return acpi_gpio_resource_lookup(lookup); } /** * acpi_get_gpiod_from_data() - get a GPIO descriptor from ACPI data node * @fwnode: pointer to an ACPI firmware node to get the GPIO information from * @propname: Property name of the GPIO - * @index: index of GpioIo/GpioInt resource (starting from %0) - * @info: info pointer to fill in (optional) + * @lookup: pointer to struct acpi_gpio_lookup to fill in * * This function uses the property-based GPIO lookup to get to the GPIO * resource with the relevant information from a data-only ACPI firmware node * and uses that to obtain the GPIO descriptor to return. * * Returns: - * GPIO descriptor to use with Linux generic GPIO API. - * If the GPIO cannot be translated or there is an error an ERR_PTR is - * returned. + * 0 on success, negative errno on failure. + * + * The @lookup is filled with GPIO descriptor to use with Linux generic GPIO API. + * If the GPIO cannot be translated an error will be returned. */ -static struct gpio_desc *acpi_get_gpiod_from_data(struct fwnode_handle *fwnode, - const char *propname, - int index, - struct acpi_gpio_info *info) +static int acpi_get_gpiod_from_data(struct fwnode_handle *fwnode, const char *propname, + struct acpi_gpio_lookup *lookup) { - struct acpi_gpio_lookup lookup; int ret; if (!is_acpi_data_node(fwnode)) - return ERR_PTR(-ENODEV); + return -ENODEV; if (!propname) - return ERR_PTR(-EINVAL); - - memset(&lookup, 0, sizeof(lookup)); - lookup.index = index; + return -EINVAL; - ret = acpi_gpio_property_lookup(fwnode, propname, index, &lookup); + ret = acpi_gpio_property_lookup(fwnode, propname, lookup); if (ret) - return ERR_PTR(ret); + return ret; - ret = acpi_gpio_resource_lookup(&lookup, info); - return ret ? ERR_PTR(ret) : lookup.desc; + return acpi_gpio_resource_lookup(lookup); } static bool acpi_can_fallback_to_crs(struct acpi_device *adev, @@ -982,17 +896,25 @@ __acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id, unsigned int bool can_fallback, struct acpi_gpio_info *info) { struct acpi_device *adev = to_acpi_device_node(fwnode); + struct acpi_gpio_lookup lookup; struct gpio_desc *desc; char propname[32]; + int ret; + + memset(&lookup, 0, sizeof(lookup)); + lookup.params.crs_entry_index = idx; + lookup.info = info; /* Try first from _DSD */ for_each_gpio_property_name(propname, con_id) { if (adev) - desc = acpi_get_gpiod_by_index(adev, - propname, idx, info); + ret = acpi_get_gpiod_by_index(adev, propname, &lookup); else - desc = acpi_get_gpiod_from_data(fwnode, - propname, idx, info); + ret = acpi_get_gpiod_from_data(fwnode, propname, &lookup); + if (ret) + continue; + + desc = lookup.desc; if (PTR_ERR(desc) == -EPROBE_DEFER) return desc; @@ -1001,8 +923,13 @@ __acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id, unsigned int } /* Then from plain _CRS GPIOs */ - if (can_fallback) - return acpi_get_gpiod_by_index(adev, NULL, idx, info); + if (can_fallback) { + ret = acpi_get_gpiod_by_index(adev, NULL, &lookup); + if (ret) + return ERR_PTR(ret); + + return lookup.desc; + } return ERR_PTR(-ENOENT); } @@ -1488,248 +1415,3 @@ int acpi_gpio_count(const struct fwnode_handle *fwnode, const char *con_id) } return count ? count : -ENOENT; } - -/* Run deferred acpi_gpiochip_request_irqs() */ -static int __init acpi_gpio_handle_deferred_request_irqs(void) -{ - struct acpi_gpio_chip *acpi_gpio, *tmp; - - mutex_lock(&acpi_gpio_deferred_req_irqs_lock); - list_for_each_entry_safe(acpi_gpio, tmp, - &acpi_gpio_deferred_req_irqs_list, - deferred_req_irqs_list_entry) - acpi_gpiochip_request_irqs(acpi_gpio); - - acpi_gpio_deferred_req_irqs_done = true; - mutex_unlock(&acpi_gpio_deferred_req_irqs_lock); - - return 0; -} -/* We must use _sync so that this runs after the first deferred_probe run */ -late_initcall_sync(acpi_gpio_handle_deferred_request_irqs); - -static const struct dmi_system_id gpiolib_acpi_quirks[] __initconst = { - { - /* - * The Minix Neo Z83-4 has a micro-USB-B id-pin handler for - * a non existing micro-USB-B connector which puts the HDMI - * DDC pins in GPIO mode, breaking HDMI support. - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "MINIX"), - DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .no_edge_events_on_boot = true, - }, - }, - { - /* - * The Terra Pad 1061 has a micro-USB-B id-pin handler, which - * instead of controlling the actual micro-USB-B turns the 5V - * boost for its USB-A connector off. The actual micro-USB-B - * connector is wired for charging only. - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Wortmann_AG"), - DMI_MATCH(DMI_PRODUCT_NAME, "TERRA_PAD_1061"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .no_edge_events_on_boot = true, - }, - }, - { - /* - * The Dell Venue 10 Pro 5055, with Bay Trail SoC + TI PMIC uses an - * external embedded-controller connected via I2C + an ACPI GPIO - * event handler on INT33FFC:02 pin 12, causing spurious wakeups. - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "Venue 10 Pro 5055"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "INT33FC:02@12", - }, - }, - { - /* - * HP X2 10 models with Cherry Trail SoC + TI PMIC use an - * external embedded-controller connected via I2C + an ACPI GPIO - * event handler on INT33FF:01 pin 0, causing spurious wakeups. - * When suspending by closing the LID, the power to the USB - * keyboard is turned off, causing INT0002 ACPI events to - * trigger once the XHCI controller notices the keyboard is - * gone. So INT0002 events cause spurious wakeups too. Ignoring - * EC wakes breaks wakeup when opening the lid, the user needs - * to press the power-button to wakeup the system. The - * alternative is suspend simply not working, which is worse. - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "HP"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP x2 Detachable 10-p0XX"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "INT33FF:01@0,INT0002:00@2", - }, - }, - { - /* - * HP X2 10 models with Bay Trail SoC + AXP288 PMIC use an - * external embedded-controller connected via I2C + an ACPI GPIO - * event handler on INT33FC:02 pin 28, causing spurious wakeups. - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion x2 Detachable"), - DMI_MATCH(DMI_BOARD_NAME, "815D"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "INT33FC:02@28", - }, - }, - { - /* - * HP X2 10 models with Cherry Trail SoC + AXP288 PMIC use an - * external embedded-controller connected via I2C + an ACPI GPIO - * event handler on INT33FF:01 pin 0, causing spurious wakeups. - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "HP"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion x2 Detachable"), - DMI_MATCH(DMI_BOARD_NAME, "813E"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "INT33FF:01@0", - }, - }, - { - /* - * Interrupt storm caused from edge triggered floating pin - * Found in BIOS UX325UAZ.300 - * https://bugzilla.kernel.org/show_bug.cgi?id=216208 - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), - DMI_MATCH(DMI_PRODUCT_NAME, "ZenBook UX325UAZ_UM325UAZ"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_interrupt = "AMDI0030:00@18", - }, - }, - { - /* - * Spurious wakeups from TP_ATTN# pin - * Found in BIOS 1.7.8 - * https://gitlab.freedesktop.org/drm/amd/-/issues/1722#note_1720627 - */ - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "ELAN0415:00@9", - }, - }, - { - /* - * Spurious wakeups from TP_ATTN# pin - * Found in BIOS 1.7.8 - * https://gitlab.freedesktop.org/drm/amd/-/issues/1722#note_1720627 - */ - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "ELAN0415:00@9", - }, - }, - { - /* - * Spurious wakeups from TP_ATTN# pin - * Found in BIOS 1.7.7 - */ - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "NH5xAx"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "SYNA1202:00@16", - }, - }, - { - /* - * On the Peaq C1010 2-in-1 INT33FC:00 pin 3 is connected to - * a "dolby" button. At the ACPI level an _AEI event-handler - * is connected which sets an ACPI variable to 1 on both - * edges. This variable can be polled + cleared to 0 using - * WMI. But since the variable is set on both edges the WMI - * interface is pretty useless even when polling. - * So instead the x86-android-tablets code instantiates - * a gpio-keys platform device for it. - * Ignore the _AEI handler for the pin, so that it is not busy. - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "PEAQ"), - DMI_MATCH(DMI_PRODUCT_NAME, "PEAQ PMM C1010 MD99187"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_interrupt = "INT33FC:00@3", - }, - }, - { - /* - * Spurious wakeups from TP_ATTN# pin - * Found in BIOS 0.35 - * https://gitlab.freedesktop.org/drm/amd/-/issues/3073 - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "GPD"), - DMI_MATCH(DMI_PRODUCT_NAME, "G1619-04"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_wake = "PNP0C50:00@8", - }, - }, - { - /* - * Spurious wakeups from GPIO 11 - * Found in BIOS 1.04 - * https://gitlab.freedesktop.org/drm/amd/-/issues/3954 - */ - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Acer"), - DMI_MATCH(DMI_PRODUCT_FAMILY, "Acer Nitro V 14"), - }, - .driver_data = &(struct acpi_gpiolib_dmi_quirk) { - .ignore_interrupt = "AMDI0030:00@11", - }, - }, - {} /* Terminating entry */ -}; - -static int __init acpi_gpio_setup_params(void) -{ - const struct acpi_gpiolib_dmi_quirk *quirk = NULL; - const struct dmi_system_id *id; - - id = dmi_first_match(gpiolib_acpi_quirks); - if (id) - quirk = id->driver_data; - - if (run_edge_events_on_boot < 0) { - if (quirk && quirk->no_edge_events_on_boot) - run_edge_events_on_boot = 0; - else - run_edge_events_on_boot = 1; - } - - if (ignore_wake == NULL && quirk && quirk->ignore_wake) - ignore_wake = quirk->ignore_wake; - - if (ignore_interrupt == NULL && quirk && quirk->ignore_interrupt) - ignore_interrupt = quirk->ignore_interrupt; - - return 0; -} - -/* Directly after dmi_setup() which runs as core_initcall() */ -postcore_initcall(acpi_gpio_setup_params); diff --git a/drivers/gpio/gpiolib-acpi-quirks.c b/drivers/gpio/gpiolib-acpi-quirks.c new file mode 100644 index 000000000000..219667315b2c --- /dev/null +++ b/drivers/gpio/gpiolib-acpi-quirks.c @@ -0,0 +1,363 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ACPI quirks for GPIO ACPI helpers + * + * Author: Hans de Goede <hdegoede@redhat.com> + */ + +#include <linux/dmi.h> +#include <linux/kstrtox.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/printk.h> +#include <linux/string.h> +#include <linux/types.h> + +#include "gpiolib-acpi.h" + +static int run_edge_events_on_boot = -1; +module_param(run_edge_events_on_boot, int, 0444); +MODULE_PARM_DESC(run_edge_events_on_boot, + "Run edge _AEI event-handlers at boot: 0=no, 1=yes, -1=auto"); + +static char *ignore_wake; +module_param(ignore_wake, charp, 0444); +MODULE_PARM_DESC(ignore_wake, + "controller@pin combos on which to ignore the ACPI wake flag " + "ignore_wake=controller@pin[,controller@pin[,...]]"); + +static char *ignore_interrupt; +module_param(ignore_interrupt, charp, 0444); +MODULE_PARM_DESC(ignore_interrupt, + "controller@pin combos on which to ignore interrupt " + "ignore_interrupt=controller@pin[,controller@pin[,...]]"); + +/* + * For GPIO chips which call acpi_gpiochip_request_interrupts() before late_init + * (so builtin drivers) we register the ACPI GpioInt IRQ handlers from a + * late_initcall_sync() handler, so that other builtin drivers can register their + * OpRegions before the event handlers can run. This list contains GPIO chips + * for which the acpi_gpiochip_request_irqs() call has been deferred. + */ +static DEFINE_MUTEX(acpi_gpio_deferred_req_irqs_lock); +static LIST_HEAD(acpi_gpio_deferred_req_irqs_list); +static bool acpi_gpio_deferred_req_irqs_done; + +bool acpi_gpio_add_to_deferred_list(struct list_head *list) +{ + bool defer; + + mutex_lock(&acpi_gpio_deferred_req_irqs_lock); + defer = !acpi_gpio_deferred_req_irqs_done; + if (defer) + list_add(list, &acpi_gpio_deferred_req_irqs_list); + mutex_unlock(&acpi_gpio_deferred_req_irqs_lock); + + return defer; +} + +void acpi_gpio_remove_from_deferred_list(struct list_head *list) +{ + mutex_lock(&acpi_gpio_deferred_req_irqs_lock); + if (!list_empty(list)) + list_del_init(list); + mutex_unlock(&acpi_gpio_deferred_req_irqs_lock); +} + +int acpi_gpio_need_run_edge_events_on_boot(void) +{ + return run_edge_events_on_boot; +} + +bool acpi_gpio_in_ignore_list(enum acpi_gpio_ignore_list list, + const char *controller_in, unsigned int pin_in) +{ + const char *ignore_list, *controller, *pin_str; + unsigned int pin; + char *endp; + int len; + + switch (list) { + case ACPI_GPIO_IGNORE_WAKE: + ignore_list = ignore_wake; + break; + case ACPI_GPIO_IGNORE_INTERRUPT: + ignore_list = ignore_interrupt; + break; + default: + return false; + } + + controller = ignore_list; + while (controller) { + pin_str = strchr(controller, '@'); + if (!pin_str) + goto err; + + len = pin_str - controller; + if (len == strlen(controller_in) && + strncmp(controller, controller_in, len) == 0) { + pin = simple_strtoul(pin_str + 1, &endp, 10); + if (*endp != 0 && *endp != ',') + goto err; + + if (pin == pin_in) + return true; + } + + controller = strchr(controller, ','); + if (controller) + controller++; + } + + return false; +err: + pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_...: %s\n", ignore_list); + return false; +} + +/* Run deferred acpi_gpiochip_request_irqs() */ +static int __init acpi_gpio_handle_deferred_request_irqs(void) +{ + mutex_lock(&acpi_gpio_deferred_req_irqs_lock); + acpi_gpio_process_deferred_list(&acpi_gpio_deferred_req_irqs_list); + acpi_gpio_deferred_req_irqs_done = true; + mutex_unlock(&acpi_gpio_deferred_req_irqs_lock); + + return 0; +} +/* We must use _sync so that this runs after the first deferred_probe run */ +late_initcall_sync(acpi_gpio_handle_deferred_request_irqs); + +struct acpi_gpiolib_dmi_quirk { + bool no_edge_events_on_boot; + char *ignore_wake; + char *ignore_interrupt; +}; + +static const struct dmi_system_id gpiolib_acpi_quirks[] __initconst = { + { + /* + * The Minix Neo Z83-4 has a micro-USB-B id-pin handler for + * a non existing micro-USB-B connector which puts the HDMI + * DDC pins in GPIO mode, breaking HDMI support. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "MINIX"), + DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .no_edge_events_on_boot = true, + }, + }, + { + /* + * The Terra Pad 1061 has a micro-USB-B id-pin handler, which + * instead of controlling the actual micro-USB-B turns the 5V + * boost for its USB-A connector off. The actual micro-USB-B + * connector is wired for charging only. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Wortmann_AG"), + DMI_MATCH(DMI_PRODUCT_NAME, "TERRA_PAD_1061"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .no_edge_events_on_boot = true, + }, + }, + { + /* + * The Dell Venue 10 Pro 5055, with Bay Trail SoC + TI PMIC uses an + * external embedded-controller connected via I2C + an ACPI GPIO + * event handler on INT33FFC:02 pin 12, causing spurious wakeups. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Venue 10 Pro 5055"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "INT33FC:02@12", + }, + }, + { + /* + * HP X2 10 models with Cherry Trail SoC + TI PMIC use an + * external embedded-controller connected via I2C + an ACPI GPIO + * event handler on INT33FF:01 pin 0, causing spurious wakeups. + * When suspending by closing the LID, the power to the USB + * keyboard is turned off, causing INT0002 ACPI events to + * trigger once the XHCI controller notices the keyboard is + * gone. So INT0002 events cause spurious wakeups too. Ignoring + * EC wakes breaks wakeup when opening the lid, the user needs + * to press the power-button to wakeup the system. The + * alternative is suspend simply not working, which is worse. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "HP"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP x2 Detachable 10-p0XX"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "INT33FF:01@0,INT0002:00@2", + }, + }, + { + /* + * HP X2 10 models with Bay Trail SoC + AXP288 PMIC use an + * external embedded-controller connected via I2C + an ACPI GPIO + * event handler on INT33FC:02 pin 28, causing spurious wakeups. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion x2 Detachable"), + DMI_MATCH(DMI_BOARD_NAME, "815D"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "INT33FC:02@28", + }, + }, + { + /* + * HP X2 10 models with Cherry Trail SoC + AXP288 PMIC use an + * external embedded-controller connected via I2C + an ACPI GPIO + * event handler on INT33FF:01 pin 0, causing spurious wakeups. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "HP"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion x2 Detachable"), + DMI_MATCH(DMI_BOARD_NAME, "813E"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "INT33FF:01@0", + }, + }, + { + /* + * Interrupt storm caused from edge triggered floating pin + * Found in BIOS UX325UAZ.300 + * https://bugzilla.kernel.org/show_bug.cgi?id=216208 + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + DMI_MATCH(DMI_PRODUCT_NAME, "ZenBook UX325UAZ_UM325UAZ"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_interrupt = "AMDI0030:00@18", + }, + }, + { + /* + * Spurious wakeups from TP_ATTN# pin + * Found in BIOS 1.7.8 + * https://gitlab.freedesktop.org/drm/amd/-/issues/1722#note_1720627 + */ + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "ELAN0415:00@9", + }, + }, + { + /* + * Spurious wakeups from TP_ATTN# pin + * Found in BIOS 1.7.8 + * https://gitlab.freedesktop.org/drm/amd/-/issues/1722#note_1720627 + */ + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "ELAN0415:00@9", + }, + }, + { + /* + * Spurious wakeups from TP_ATTN# pin + * Found in BIOS 1.7.7 + */ + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "NH5xAx"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "SYNA1202:00@16", + }, + }, + { + /* + * On the Peaq C1010 2-in-1 INT33FC:00 pin 3 is connected to + * a "dolby" button. At the ACPI level an _AEI event-handler + * is connected which sets an ACPI variable to 1 on both + * edges. This variable can be polled + cleared to 0 using + * WMI. But since the variable is set on both edges the WMI + * interface is pretty useless even when polling. + * So instead the x86-android-tablets code instantiates + * a gpio-keys platform device for it. + * Ignore the _AEI handler for the pin, so that it is not busy. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PEAQ"), + DMI_MATCH(DMI_PRODUCT_NAME, "PEAQ PMM C1010 MD99187"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_interrupt = "INT33FC:00@3", + }, + }, + { + /* + * Spurious wakeups from TP_ATTN# pin + * Found in BIOS 0.35 + * https://gitlab.freedesktop.org/drm/amd/-/issues/3073 + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GPD"), + DMI_MATCH(DMI_PRODUCT_NAME, "G1619-04"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_wake = "PNP0C50:00@8", + }, + }, + { + /* + * Spurious wakeups from GPIO 11 + * Found in BIOS 1.04 + * https://gitlab.freedesktop.org/drm/amd/-/issues/3954 + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_FAMILY, "Acer Nitro V 14"), + }, + .driver_data = &(struct acpi_gpiolib_dmi_quirk) { + .ignore_interrupt = "AMDI0030:00@11", + }, + }, + {} /* Terminating entry */ +}; + +static int __init acpi_gpio_setup_params(void) +{ + const struct acpi_gpiolib_dmi_quirk *quirk = NULL; + const struct dmi_system_id *id; + + id = dmi_first_match(gpiolib_acpi_quirks); + if (id) + quirk = id->driver_data; + + if (run_edge_events_on_boot < 0) { + if (quirk && quirk->no_edge_events_on_boot) + run_edge_events_on_boot = 0; + else + run_edge_events_on_boot = 1; + } + + if (ignore_wake == NULL && quirk && quirk->ignore_wake) + ignore_wake = quirk->ignore_wake; + + if (ignore_interrupt == NULL && quirk && quirk->ignore_interrupt) + ignore_interrupt = quirk->ignore_interrupt; + + return 0; +} + +/* Directly after dmi_setup() which runs as core_initcall() */ +postcore_initcall(acpi_gpio_setup_params); diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h index 7e1c51d04040..a90267470a4e 100644 --- a/drivers/gpio/gpiolib-acpi.h +++ b/drivers/gpio/gpiolib-acpi.h @@ -58,4 +58,19 @@ static inline int acpi_gpio_count(const struct fwnode_handle *fwnode, } #endif +void acpi_gpio_process_deferred_list(struct list_head *list); + +bool acpi_gpio_add_to_deferred_list(struct list_head *list); +void acpi_gpio_remove_from_deferred_list(struct list_head *list); + +int acpi_gpio_need_run_edge_events_on_boot(void); + +enum acpi_gpio_ignore_list { + ACPI_GPIO_IGNORE_WAKE, + ACPI_GPIO_IGNORE_INTERRUPT, +}; + +bool acpi_gpio_in_ignore_list(enum acpi_gpio_ignore_list list, + const char *controller_in, unsigned int pin_in); + #endif /* GPIOLIB_ACPI_H */ diff --git a/drivers/platform/x86/intel/int0002_vgpio.c b/drivers/platform/x86/intel/int0002_vgpio.c index 3b48cd7a4075..b7b98343fdc6 100644 --- a/drivers/platform/x86/intel/int0002_vgpio.c +++ b/drivers/platform/x86/intel/int0002_vgpio.c @@ -23,7 +23,7 @@ * ACPI mechanisms, this is not a real GPIO at all. * * This driver will bind to the INT0002 device, and register as a GPIO - * controller, letting gpiolib-acpi.c call the _L02 handler as it would + * controller, letting gpiolib-acpi call the _L02 handler as it would * for a real GPIO controller. */ diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index 7355abadaef4..bc22b81f93e3 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -596,7 +596,7 @@ struct gpio_desc *devm_fwnode_gpiod_get(struct device *dev, struct acpi_gpio_params { unsigned int crs_entry_index; - unsigned int line_index; + unsigned short line_index; bool active_low; }; |