diff options
Diffstat (limited to 'src/drivers/i2c')
| -rw-r--r-- | src/drivers/i2c/generic/chip.h | 3 | ||||
| -rw-r--r-- | src/drivers/i2c/generic/generic.c | 18 |
2 files changed, 18 insertions, 3 deletions
diff --git a/src/drivers/i2c/generic/chip.h b/src/drivers/i2c/generic/chip.h index a4f85df2ee..5810db801f 100644 --- a/src/drivers/i2c/generic/chip.h +++ b/src/drivers/i2c/generic/chip.h @@ -29,6 +29,9 @@ struct drivers_i2c_generic_config { unsigned wake; /* Wake GPE */ struct acpi_irq irq; /* Interrupt */ + /* Use GPIO based interrupt instead of PIRQ */ + struct acpi_gpio irq_gpio; + /* * This flag will add a device propery which will indicate * to the OS that it should probe this device before adding it. diff --git a/src/drivers/i2c/generic/generic.c b/src/drivers/i2c/generic/generic.c index dea78d5e89..f8de1c22d9 100644 --- a/src/drivers/i2c/generic/generic.c +++ b/src/drivers/i2c/generic/generic.c @@ -68,7 +68,7 @@ void i2c_generic_fill_ssdt(struct device *dev, }; struct acpi_dp *dsd = NULL; int curr_index = 0; - int reset_gpio_index = -1, enable_gpio_index = -1; + int reset_gpio_index = -1, enable_gpio_index = -1, irq_gpio_index = -1; const char *path = acpi_device_path(dev); if (!dev->enabled || !scope) @@ -93,7 +93,14 @@ void i2c_generic_fill_ssdt(struct device *dev, acpigen_write_name("_CRS"); acpigen_write_resourcetemplate_header(); acpi_device_write_i2c(&i2c); - acpi_device_write_interrupt(&config->irq); + + /* Use either Interrupt() or GpioInt() */ + if (config->irq_gpio.pin_count) + irq_gpio_index = i2c_generic_write_gpio(&config->irq_gpio, + &curr_index); + else + acpi_device_write_interrupt(&config->irq); + if (i2c_generic_add_gpios_to_crs(config) == true) { reset_gpio_index = i2c_generic_write_gpio(&config->reset_gpio, &curr_index); @@ -110,10 +117,15 @@ void i2c_generic_fill_ssdt(struct device *dev, /* DSD */ if (config->probed || (reset_gpio_index != -1) || - (enable_gpio_index != -1)) { + (enable_gpio_index != -1) || (irq_gpio_index != -1)) { dsd = acpi_dp_new_table("_DSD"); if (config->probed) acpi_dp_add_integer(dsd, "linux,probed", 1); + if (irq_gpio_index != -1) + acpi_dp_add_gpio(dsd, "irq-gpios", path, + irq_gpio_index, 0, + config->irq_gpio.polarity == + ACPI_GPIO_ACTIVE_LOW); if (reset_gpio_index != -1) acpi_dp_add_gpio(dsd, "reset-gpios", path, reset_gpio_index, 0, |