From a0603397740165cfa13a250851f0213e9035cd5e Mon Sep 17 00:00:00 2001 From: Shelley Chen Date: Thu, 26 Apr 2018 13:52:30 -0700 Subject: 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 Reviewed-on: https://review.coreboot.org/25882 Tested-by: build bot (Jenkins) Reviewed-by: Duncan Laurie Reviewed-by: Furquan Shaikh --- src/drivers/spi/acpi/acpi.c | 19 ++++++++++++++----- src/drivers/spi/acpi/chip.h | 12 +++++++++--- 2 files changed, 23 insertions(+), 8 deletions(-) (limited to 'src/drivers/spi') diff --git a/src/drivers/spi/acpi/acpi.c b/src/drivers/spi/acpi/acpi.c index d36a03ac20..7af046046a 100644 --- a/src/drivers/spi/acpi/acpi.c +++ b/src/drivers/spi/acpi/acpi.c @@ -165,11 +165,20 @@ static void spi_acpi_fill_ssdt_generator(struct device *dev) } /* 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); + } acpigen_pop_len(); /* Device */ acpigen_pop_len(); /* Scope */ diff --git a/src/drivers/spi/acpi/chip.h b/src/drivers/spi/acpi/chip.h index 35341d33be..fa7d8a15d2 100644 --- a/src/drivers/spi/acpi/chip.h +++ b/src/drivers/spi/acpi/chip.h @@ -41,17 +41,23 @@ struct drivers_spi_acpi_config { /* 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; }; #endif /* __SPI_ACPI_CHIP_H__ */ -- cgit v1.2.3