diff options
| -rw-r--r-- | src/drivers/i2c/generic/chip.h | 12 | ||||
| -rw-r--r-- | src/drivers/i2c/generic/generic.c | 17 | ||||
| -rw-r--r-- | src/mainboard/google/reef/variants/baseboard/devicetree.cb | 13 | ||||
| -rw-r--r-- | src/mainboard/google/reef/variants/snappy/devicetree.cb | 14 | ||||
| -rw-r--r-- | src/mainboard/intel/leafhill/devicetree.cb | 13 |
5 files changed, 29 insertions, 40 deletions
diff --git a/src/drivers/i2c/generic/chip.h b/src/drivers/i2c/generic/chip.h index 19c6596db4..a4f85df2ee 100644 --- a/src/drivers/i2c/generic/chip.h +++ b/src/drivers/i2c/generic/chip.h @@ -19,11 +19,6 @@ #include <arch/acpi_device.h> #include <device/i2c.h> -enum power_mgmt_type { - POWER_RESOURCE = 1, - GPIO_EXPORT = 2, -}; - struct drivers_i2c_generic_config { const char *hid; /* ACPI _HID (required) */ const char *cid; /* ACPI _CID */ @@ -47,8 +42,11 @@ struct drivers_i2c_generic_config { unsigned device_present_gpio; unsigned device_present_gpio_invert; - /* Power management type. */ - enum power_mgmt_type pwr_mgmt_type; + /* Disable reset and enable GPIO export in _CRS */ + bool disable_gpio_export_in_crs; + + /* Does the device have a power resource? */ + bool has_power_resource; /* GPIO used to take device out of reset or to put it into reset. */ struct acpi_gpio reset_gpio; diff --git a/src/drivers/i2c/generic/generic.c b/src/drivers/i2c/generic/generic.c index 4cf3e9e419..a90947f1b4 100644 --- a/src/drivers/i2c/generic/generic.c +++ b/src/drivers/i2c/generic/generic.c @@ -32,7 +32,7 @@ static void i2c_generic_add_power_res(struct drivers_i2c_generic_config *config) unsigned reset_gpio = config->reset_gpio.pins[0]; unsigned enable_gpio = config->enable_gpio.pins[0]; - if (config->pwr_mgmt_type != POWER_RESOURCE) + if (!config->has_power_resource) return; if (!reset_gpio && !enable_gpio) @@ -72,10 +72,17 @@ static void i2c_generic_add_power_res(struct drivers_i2c_generic_config *config) static bool i2c_generic_add_gpios_to_crs(struct drivers_i2c_generic_config *cfg) { - if (cfg->pwr_mgmt_type == GPIO_EXPORT) - return true; - - return false; + /* + * Return false if: + * 1. Request to explicitly disable export of GPIOs in CRS, or + * 2. Both reset and enable GPIOs are not provided. + */ + if (cfg->disable_gpio_export_in_crs || + ((cfg->reset_gpio.pin_count == 0) && + (cfg->enable_gpio.pin_count == 0))) + return false; + + return true; } static int i2c_generic_write_gpio(struct acpi_gpio *gpio, int *curr_index) diff --git a/src/mainboard/google/reef/variants/baseboard/devicetree.cb b/src/mainboard/google/reef/variants/baseboard/devicetree.cb index 7db4f156b8..2ccf277299 100644 --- a/src/mainboard/google/reef/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/reef/variants/baseboard/devicetree.cb @@ -177,16 +177,11 @@ chip soc/intel/apollolake register "desc" = ""ELAN Touchscreen"" register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)" register "probed" = "1" - register "pwr_mgmt_type" = "GPIO_EXPORT" register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)" - - chip drivers/generic/gpio_regulator - register "name" = ""vcc33"" - register "gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)" - register "enabled_on_boot" = "1" - device generic 0 on end - end - + register "reset_delay_ms" = "20" + register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)" + register "enable_delay_ms" = "1" + register "has_power_resource" = "1" device i2c 10 on end end end # - I2C 3 diff --git a/src/mainboard/google/reef/variants/snappy/devicetree.cb b/src/mainboard/google/reef/variants/snappy/devicetree.cb index e498533db3..febc03fa80 100644 --- a/src/mainboard/google/reef/variants/snappy/devicetree.cb +++ b/src/mainboard/google/reef/variants/snappy/devicetree.cb @@ -175,16 +175,11 @@ chip soc/intel/apollolake register "desc" = ""ELAN Touchscreen"" register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)" register "probed" = "1" - register "pwr_mgmt_type" = "GPIO_EXPORT" register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)" - - chip drivers/generic/gpio_regulator - register "name" = ""vcc33"" - register "gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)" - register "enabled_on_boot" = "1" - device generic 0 on end - end - + register "reset_delay_ms" = "20" + register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)" + register "enable_delay_ms" = "1" + register "has_power_resource" = "1" device i2c 10 on end end chip drivers/i2c/hid @@ -192,7 +187,6 @@ chip soc/intel/apollolake register "generic.desc" = ""WDT Touchscreen"" register "generic.irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)" register "generic.probed" = "1" - register "generic.pwr_mgmt_type" = "GPIO_EXPORT" register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)" register "hid_desc_reg_offset" = "0x20" device i2c 2c on end diff --git a/src/mainboard/intel/leafhill/devicetree.cb b/src/mainboard/intel/leafhill/devicetree.cb index 7db4f156b8..2ccf277299 100644 --- a/src/mainboard/intel/leafhill/devicetree.cb +++ b/src/mainboard/intel/leafhill/devicetree.cb @@ -177,16 +177,11 @@ chip soc/intel/apollolake register "desc" = ""ELAN Touchscreen"" register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)" register "probed" = "1" - register "pwr_mgmt_type" = "GPIO_EXPORT" register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)" - - chip drivers/generic/gpio_regulator - register "name" = ""vcc33"" - register "gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)" - register "enabled_on_boot" = "1" - device generic 0 on end - end - + register "reset_delay_ms" = "20" + register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)" + register "enable_delay_ms" = "1" + register "has_power_resource" = "1" device i2c 10 on end end end # - I2C 3 |