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authorVincent Palatin <vpalatin@chromium.org>2016-08-01 11:54:37 +0200
committerJonathan Cameron <jic23@kernel.org>2016-10-25 18:20:29 +0100
commite4244ebddae27e9200146bba897f12a3950ce722 (patch)
tree950f21d391cfaa5409f38d3eb4aee0901f376fca /include/linux/mfd
parentc14dca07a31dac8bd91aa818df62fb3bf1d846c5 (diff)
downloadop-kernel-dev-e4244ebddae27e9200146bba897f12a3950ce722.zip
op-kernel-dev-e4244ebddae27e9200146bba897f12a3950ce722.tar.gz
platform/chrome: Introduce a new function to check EC features.
Use the EC_CMD_GET_FEATURES message to check the supported features for each MCU. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> [tomeu: adapted to changes in mainline] Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> [enric: remove references to USB PD feature and do it more generic] Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Guenter Roeck <groeck@chromium.org> For the MFD changes: Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/mfd')
-rw-r--r--include/linux/mfd/cros_ec.h1
-rw-r--r--include/linux/mfd/cros_ec_commands.h84
2 files changed, 85 insertions, 0 deletions
diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index 1f85b7a..f62043a 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -184,6 +184,7 @@ struct cros_ec_dev {
struct cros_ec_device *ec_dev;
struct device *dev;
u16 cmd_offset;
+ u32 features[2];
};
/**
diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 8826e0f..1683003 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -713,6 +713,90 @@ struct ec_response_get_set_value {
/* More than one command can use these structs to get/set paramters. */
#define EC_CMD_GSV_PAUSE_IN_S5 0x0c
+/*****************************************************************************/
+/* List the features supported by the firmware */
+#define EC_CMD_GET_FEATURES 0x0d
+
+/* Supported features */
+enum ec_feature_code {
+ /*
+ * This image contains a limited set of features. Another image
+ * in RW partition may support more features.
+ */
+ EC_FEATURE_LIMITED = 0,
+ /*
+ * Commands for probing/reading/writing/erasing the flash in the
+ * EC are present.
+ */
+ EC_FEATURE_FLASH = 1,
+ /*
+ * Can control the fan speed directly.
+ */
+ EC_FEATURE_PWM_FAN = 2,
+ /*
+ * Can control the intensity of the keyboard backlight.
+ */
+ EC_FEATURE_PWM_KEYB = 3,
+ /*
+ * Support Google lightbar, introduced on Pixel.
+ */
+ EC_FEATURE_LIGHTBAR = 4,
+ /* Control of LEDs */
+ EC_FEATURE_LED = 5,
+ /* Exposes an interface to control gyro and sensors.
+ * The host goes through the EC to access these sensors.
+ * In addition, the EC may provide composite sensors, like lid angle.
+ */
+ EC_FEATURE_MOTION_SENSE = 6,
+ /* The keyboard is controlled by the EC */
+ EC_FEATURE_KEYB = 7,
+ /* The AP can use part of the EC flash as persistent storage. */
+ EC_FEATURE_PSTORE = 8,
+ /* The EC monitors BIOS port 80h, and can return POST codes. */
+ EC_FEATURE_PORT80 = 9,
+ /*
+ * Thermal management: include TMP specific commands.
+ * Higher level than direct fan control.
+ */
+ EC_FEATURE_THERMAL = 10,
+ /* Can switch the screen backlight on/off */
+ EC_FEATURE_BKLIGHT_SWITCH = 11,
+ /* Can switch the wifi module on/off */
+ EC_FEATURE_WIFI_SWITCH = 12,
+ /* Monitor host events, through for example SMI or SCI */
+ EC_FEATURE_HOST_EVENTS = 13,
+ /* The EC exposes GPIO commands to control/monitor connected devices. */
+ EC_FEATURE_GPIO = 14,
+ /* The EC can send i2c messages to downstream devices. */
+ EC_FEATURE_I2C = 15,
+ /* Command to control charger are included */
+ EC_FEATURE_CHARGER = 16,
+ /* Simple battery support. */
+ EC_FEATURE_BATTERY = 17,
+ /*
+ * Support Smart battery protocol
+ * (Common Smart Battery System Interface Specification)
+ */
+ EC_FEATURE_SMART_BATTERY = 18,
+ /* EC can dectect when the host hangs. */
+ EC_FEATURE_HANG_DETECT = 19,
+ /* Report power information, for pit only */
+ EC_FEATURE_PMU = 20,
+ /* Another Cros EC device is present downstream of this one */
+ EC_FEATURE_SUB_MCU = 21,
+ /* Support USB Power delivery (PD) commands */
+ EC_FEATURE_USB_PD = 22,
+ /* Control USB multiplexer, for audio through USB port for instance. */
+ EC_FEATURE_USB_MUX = 23,
+ /* Motion Sensor code has an internal software FIFO */
+ EC_FEATURE_MOTION_SENSE_FIFO = 24,
+};
+
+#define EC_FEATURE_MASK_0(event_code) (1UL << (event_code % 32))
+#define EC_FEATURE_MASK_1(event_code) (1UL << (event_code - 32))
+struct ec_response_get_features {
+ uint32_t flags[2];
+} __packed;
/*****************************************************************************/
/* Flash commands */
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