diff options
author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-12-18 22:52:20 +0100 |
---|---|---|
committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-12-18 22:52:20 +0100 |
commit | 1ddf624b0b268fdc0b80b1de618b98f8d117afea (patch) | |
tree | 3d3218332bcb34cb0afa01d6ad996058a3dbcb77 /drivers/gpio/gpiolib-acpi.c | |
parent | 6b774eec1f9d3064e9b33634dfa99d5666d0a73a (diff) | |
parent | bfb9e5c03076a446b1f4f6a523ddc8d723c907a6 (diff) |
Merge tag 'v4.14.159' into 4.14-2.0.x-imx
This is the 4.14.159 stable release
Conflicts:
arch/arm/Kconfig.debug
arch/arm/boot/dts/imx7s.dtsi
arch/arm/mach-imx/cpuidle-imx6sx.c
drivers/crypto/caam/caamalg.c
drivers/crypto/mxs-dcp.c
drivers/dma/imx-sdma.c
drivers/input/keyboard/imx_keypad.c
drivers/net/can/flexcan.c
drivers/net/can/rx-offload.c
drivers/net/wireless/ath/ath10k/pci.c
drivers/pci/dwc/pci-imx6.c
drivers/spi/spi-fsl-lpspi.c
drivers/usb/dwc3/gadget.c
Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
-rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 59 |
1 files changed, 55 insertions, 4 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 57d157e94bd6..3aa7fe6baf2a 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -10,6 +10,7 @@ * published by the Free Software Foundation. */ +#include <linux/dmi.h> #include <linux/errno.h> #include <linux/gpio.h> #include <linux/gpio/consumer.h> @@ -23,6 +24,11 @@ #include "gpiolib.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"); + /** * struct acpi_gpio_event - ACPI GPIO event handler data * @@ -231,10 +237,13 @@ 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 */ - value = gpiod_get_raw_value_cansleep(event->desc); - if (((event->irqflags & IRQF_TRIGGER_RISING) && value == 1) || - ((event->irqflags & IRQF_TRIGGER_FALLING) && value == 0)) - event->handler(event->irq, event); + if (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) || + ((event->irqflags & IRQF_TRIGGER_FALLING) && value == 0)) + event->handler(event->irq, event); + } } static void acpi_gpiochip_request_irqs(struct acpi_gpio_chip *acpi_gpio) @@ -1302,3 +1311,45 @@ static int acpi_gpio_handle_deferred_request_irqs(void) } /* 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 run_edge_events_on_boot_blacklist[] = { + { + /* + * 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"), + } + }, + { + /* + * 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"), + } + }, + {} /* Terminating entry */ +}; + +static int acpi_gpio_setup_params(void) +{ + if (run_edge_events_on_boot < 0) { + if (dmi_check_system(run_edge_events_on_boot_blacklist)) + run_edge_events_on_boot = 0; + else + run_edge_events_on_boot = 1; + } + + return 0; +} + +/* Directly after dmi_setup() which runs as core_initcall() */ +postcore_initcall(acpi_gpio_setup_params); |