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path: root/drivers/gpio/gpiolib-acpi.c
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Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
-rw-r--r--drivers/gpio/gpiolib-acpi.c140
1 files changed, 114 insertions, 26 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 31fee5e918b7..0017367e94ee 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -21,18 +21,21 @@
#include "gpiolib.h"
#include "gpiolib-acpi.h"
-#define QUIRK_NO_EDGE_EVENTS_ON_BOOT 0x01l
-#define QUIRK_NO_WAKEUP 0x02l
-
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 int honor_wakeup = -1;
-module_param(honor_wakeup, int, 0444);
-MODULE_PARM_DESC(honor_wakeup,
- "Honor the ACPI wake-capable flag: 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[,...]]");
+
+struct acpi_gpiolib_dmi_quirk {
+ bool no_edge_events_on_boot;
+ char *ignore_wake;
+};
/**
* struct acpi_gpio_event - ACPI GPIO event handler data
@@ -202,6 +205,57 @@ static void acpi_gpiochip_request_irqs(struct acpi_gpio_chip *acpi_gpio)
acpi_gpiochip_request_irq(acpi_gpio, event);
}
+static bool acpi_gpio_in_ignore_list(const char *controller_in, int pin_in)
+{
+ const char *controller, *pin_str;
+ int len, pin;
+ char *endp;
+
+ controller = ignore_wake;
+ 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_wake: %s\n",
+ ignore_wake);
+ return false;
+}
+
+static bool acpi_gpio_irq_is_wake(struct device *parent,
+ struct acpi_resource_gpio *agpio)
+{
+ int pin = agpio->pin_table[0];
+
+ if (agpio->wake_capable != ACPI_WAKE_CAPABLE)
+ return false;
+
+ if (acpi_gpio_in_ignore_list(dev_name(parent), pin)) {
+ dev_info(parent, "Ignoring wakeup on pin %d\n", pin);
+ return false;
+ }
+
+ return true;
+}
+
/* Always returns AE_OK so that we keep looping over the resources */
static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
void *context)
@@ -289,7 +343,7 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
event->handle = evt_handle;
event->handler = handler;
event->irq = irq;
- event->irq_is_wake = honor_wakeup && agpio->wake_capable == ACPI_WAKE_CAPABLE;
+ event->irq_is_wake = acpi_gpio_irq_is_wake(chip->parent, agpio);
event->pin = pin;
event->desc = desc;
@@ -1328,7 +1382,9 @@ static const struct dmi_system_id gpiolib_acpi_quirks[] = {
DMI_MATCH(DMI_SYS_VENDOR, "MINIX"),
DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"),
},
- .driver_data = (void *)QUIRK_NO_EDGE_EVENTS_ON_BOOT,
+ .driver_data = &(struct acpi_gpiolib_dmi_quirk) {
+ .no_edge_events_on_boot = true,
+ },
},
{
/*
@@ -1341,16 +1397,20 @@ static const struct dmi_system_id gpiolib_acpi_quirks[] = {
DMI_MATCH(DMI_SYS_VENDOR, "Wortmann_AG"),
DMI_MATCH(DMI_PRODUCT_NAME, "TERRA_PAD_1061"),
},
- .driver_data = (void *)QUIRK_NO_EDGE_EVENTS_ON_BOOT,
+ .driver_data = &(struct acpi_gpiolib_dmi_quirk) {
+ .no_edge_events_on_boot = true,
+ },
},
{
/*
- * Various HP X2 10 Cherry Trail models use an external
- * embedded-controller connected via I2C + an ACPI GPIO
- * event handler. The embedded controller generates various
- * spurious wakeup events when suspended. So disable wakeup
- * for its handler (it uses the only ACPI GPIO event handler).
- * This breaks wakeup when opening the lid, the user needs
+ * 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.
*/
@@ -1358,33 +1418,61 @@ static const struct dmi_system_id gpiolib_acpi_quirks[] = {
DMI_MATCH(DMI_SYS_VENDOR, "HP"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP x2 Detachable 10-p0XX"),
},
- .driver_data = (void *)QUIRK_NO_WAKEUP,
+ .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",
+ },
},
{} /* Terminating entry */
};
static int acpi_gpio_setup_params(void)
{
+ const struct acpi_gpiolib_dmi_quirk *quirk = NULL;
const struct dmi_system_id *id;
- long quirks = 0;
id = dmi_first_match(gpiolib_acpi_quirks);
if (id)
- quirks = (long)id->driver_data;
+ quirk = id->driver_data;
if (run_edge_events_on_boot < 0) {
- if (quirks & QUIRK_NO_EDGE_EVENTS_ON_BOOT)
+ if (quirk && quirk->no_edge_events_on_boot)
run_edge_events_on_boot = 0;
else
run_edge_events_on_boot = 1;
}
- if (honor_wakeup < 0) {
- if (quirks & QUIRK_NO_WAKEUP)
- honor_wakeup = 0;
- else
- honor_wakeup = 1;
- }
+ if (ignore_wake == NULL && quirk && quirk->ignore_wake)
+ ignore_wake = quirk->ignore_wake;
return 0;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-16 09:52:06 +0300