src/drivers: Add reset/enable/stop_off_ms variables to ACPI devices
Some touchscreens need to adhere to certain timings during the power
off sequence as well as during the power on sequence. Adding
reset_off_delay_ms, enable_off_delay_ms, and stop_off_delay_ms to
accommodate these devices.
BUG=b:78311818
BRANCH=None
TEST=./util/abuild/abuild -p none -t google/poppy -x -a
Change-Id: Idb4a5dbe56eee4749d2f2b514e92c28fb2c6078f
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/25882
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/drivers/i2c/generic/chip.h b/src/drivers/i2c/generic/chip.h
index 037a800..2495e7c 100644
--- a/src/drivers/i2c/generic/chip.h
+++ b/src/drivers/i2c/generic/chip.h
@@ -56,15 +56,21 @@
/* GPIO used to take device out of reset or to put it into reset. */
struct acpi_gpio reset_gpio;
/* Delay to be inserted after device is taken out of reset. */
- unsigned reset_delay_ms;
+ unsigned int reset_delay_ms;
+ /* Delay to be inserted after device is put into reset. */
+ unsigned int reset_off_delay_ms;
/* GPIO used to enable device. */
struct acpi_gpio enable_gpio;
/* Delay to be inserted after device is enabled. */
- unsigned enable_delay_ms;
+ unsigned int enable_delay_ms;
+ /* Delay to be inserted after device is disabled. */
+ unsigned int enable_off_delay_ms;
/* GPIO used to stop operation of device. */
struct acpi_gpio stop_gpio;
/* Delay to be inserted after disabling stop. */
- unsigned stop_delay_ms;
+ unsigned int stop_delay_ms;
+ /* Delay to be inserted after enabling stop. */
+ unsigned int stop_off_delay_ms;
/* Generic properties for exporting device-specific data to the OS */
struct acpi_dp property_list[MAX_GENERIC_PROPERTY_LIST];
diff --git a/src/drivers/i2c/generic/generic.c b/src/drivers/i2c/generic/generic.c
index 13f8393..46fff4a 100644
--- a/src/drivers/i2c/generic/generic.c
+++ b/src/drivers/i2c/generic/generic.c
@@ -142,11 +142,20 @@
}
/* Power Resource */
- if (config->has_power_resource)
- acpi_device_add_power_res(
- &config->reset_gpio, config->reset_delay_ms,
- &config->enable_gpio, config->enable_delay_ms,
- &config->stop_gpio, config->stop_delay_ms);
+ if (config->has_power_resource) {
+ const struct acpi_power_res_params power_res_params = {
+ &config->reset_gpio,
+ config->reset_delay_ms,
+ config->reset_off_delay_ms,
+ &config->enable_gpio,
+ config->enable_delay_ms,
+ config->enable_off_delay_ms,
+ &config->stop_gpio,
+ config->stop_delay_ms,
+ config->stop_off_delay_ms
+ };
+ acpi_device_add_power_res(&power_res_params);
+ }
/* Callback if any. */
if (callback)