diff options
| author | Nick Vaccaro <nvaccaro@google.com> | 2018-11-12 19:43:35 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-11-22 14:47:52 +0000 |
| commit | 0a495eb658d3c393e8645d703bfcf91444e7c3af (patch) | |
| tree | 7dc1ff0a7e3870b3cba38e39bd0d574f67eeea0c /src/drivers | |
| parent | f13a6f9e0531e251087f752440411018bfd91e97 (diff) | |
drivers/usb/acpi: add reset gpio to usb acpi driver
Add ability to define a reset gpio in acpi for a USB device.
BUG=b:119275094
Change-Id: Ife3ea43a1eadf2548aa52b8fbd792e691d7cc7f2
Signed-off-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-on: https://review.coreboot.org/c/29615
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Rajat Jain <rajatja@google.com>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/usb/acpi/chip.h | 2 | ||||
| -rw-r--r-- | src/drivers/usb/acpi/usb_acpi.c | 26 |
2 files changed, 28 insertions, 0 deletions
diff --git a/src/drivers/usb/acpi/chip.h b/src/drivers/usb/acpi/chip.h index f3f629abff..6429f13630 100644 --- a/src/drivers/usb/acpi/chip.h +++ b/src/drivers/usb/acpi/chip.h @@ -49,6 +49,8 @@ struct drivers_usb_acpi_config { /* Define a custom physical location for the port */ bool use_custom_pld; struct acpi_pld custom_pld; + + struct acpi_gpio reset_gpio; }; #endif /* __USB_ACPI_CHIP_H__ */ diff --git a/src/drivers/usb/acpi/usb_acpi.c b/src/drivers/usb/acpi/usb_acpi.c index 65f1f82acd..f049e68c22 100644 --- a/src/drivers/usb/acpi/usb_acpi.c +++ b/src/drivers/usb/acpi/usb_acpi.c @@ -23,6 +23,17 @@ #include <string.h> #include "chip.h" +static bool usb_acpi_add_gpios_to_crs(struct drivers_usb_acpi_config *cfg) +{ + /* + * Return false if reset GPIO is not provided. + */ + if (cfg->reset_gpio.pin_count == 0) + return false; + + return true; +} + static void usb_acpi_fill_ssdt_generator(struct device *dev) { struct drivers_usb_acpi_config *config = dev->chip_info; @@ -50,6 +61,21 @@ static void usb_acpi_fill_ssdt_generator(struct device *dev) acpigen_write_pld(&pld); } + /* Resources */ + if (usb_acpi_add_gpios_to_crs(config) == true) { + struct acpi_dp *dsd; + + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpi_device_write_gpio(&config->reset_gpio); + acpigen_write_resourcetemplate_footer(); + + dsd = acpi_dp_new_table("_DSD"); + acpi_dp_add_gpio(dsd, "reset-gpio", path, 0, 0, + config->reset_gpio.polarity); + acpi_dp_write(dsd); + } + acpigen_pop_len(); printk(BIOS_INFO, "%s: %s at %s\n", path, |