diff options
Diffstat (limited to 'drivers/gpio/gpiolib-acpi-quirks.c')
| -rw-r--r-- | drivers/gpio/gpiolib-acpi-quirks.c | 363 |
1 files changed, 363 insertions, 0 deletions
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); |