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>
This commit is contained in:
Shelley Chen
2018-04-26 13:52:30 -07:00
parent 77034fa7d4
commit a060339774
6 changed files with 110 additions and 43 deletions

View File

@@ -469,15 +469,12 @@ void acpi_device_write_spi(const struct acpi_spi *spi)
}
/* PowerResource() with Enable and/or Reset control */
void acpi_device_add_power_res(
struct acpi_gpio *reset, unsigned int reset_delay_ms,
struct acpi_gpio *enable, unsigned int enable_delay_ms,
struct acpi_gpio *stop, unsigned int stop_delay_ms)
void acpi_device_add_power_res(const struct acpi_power_res_params *params)
{
static const char *power_res_dev_states[] = { "_PR0", "_PR3" };
unsigned int reset_gpio = reset->pins[0];
unsigned int enable_gpio = enable->pins[0];
unsigned int stop_gpio = stop->pins[0];
unsigned int reset_gpio = params->reset_gpio->pins[0];
unsigned int enable_gpio = params->enable_gpio->pins[0];
unsigned int stop_gpio = params->stop_gpio->pins[0];
if (!reset_gpio && !enable_gpio && !stop_gpio)
return;
@@ -492,32 +489,41 @@ void acpi_device_add_power_res(
/* Method (_ON, 0, Serialized) */
acpigen_write_method_serialized("_ON", 0);
if (reset_gpio)
acpigen_enable_tx_gpio(reset);
acpigen_enable_tx_gpio(params->reset_gpio);
if (enable_gpio) {
acpigen_enable_tx_gpio(enable);
if (enable_delay_ms)
acpigen_write_sleep(enable_delay_ms);
acpigen_enable_tx_gpio(params->enable_gpio);
if (params->enable_delay_ms)
acpigen_write_sleep(params->enable_delay_ms);
}
if (reset_gpio) {
acpigen_disable_tx_gpio(reset);
if (reset_delay_ms)
acpigen_write_sleep(reset_delay_ms);
acpigen_disable_tx_gpio(params->reset_gpio);
if (params->reset_delay_ms)
acpigen_write_sleep(params->reset_delay_ms);
}
if (stop_gpio) {
acpigen_disable_tx_gpio(stop);
if (stop_delay_ms)
acpigen_write_sleep(stop_delay_ms);
acpigen_disable_tx_gpio(params->stop_gpio);
if (params->stop_delay_ms)
acpigen_write_sleep(params->stop_delay_ms);
}
acpigen_pop_len(); /* _ON method */
/* Method (_OFF, 0, Serialized) */
acpigen_write_method_serialized("_OFF", 0);
if (stop_gpio)
acpigen_enable_tx_gpio(stop);
if (reset_gpio)
acpigen_enable_tx_gpio(reset);
if (enable_gpio)
acpigen_disable_tx_gpio(enable);
if (stop_gpio) {
acpigen_enable_tx_gpio(params->stop_gpio);
if (params->stop_off_delay_ms)
acpigen_write_sleep(params->stop_off_delay_ms);
}
if (reset_gpio) {
acpigen_enable_tx_gpio(params->reset_gpio);
if (params->reset_off_delay_ms)
acpigen_write_sleep(params->reset_off_delay_ms);
}
if (enable_gpio) {
acpigen_disable_tx_gpio(params->enable_gpio);
if (params->enable_off_delay_ms)
acpigen_write_sleep(params->enable_off_delay_ms);
}
acpigen_pop_len(); /* _OFF method */
acpigen_pop_len(); /* PowerResource PRIC */