| Message ID | 1527155841-28494-5-git-send-email-narmstrong@baylibre.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 24/05/18 11:57, Neil Armstrong wrote: > The EC can expose a CEC bus, this patch adds the CEC related definitions > needed by the cros-ec-cec driver. > > Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> > Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Thanks! Hans > --- > include/linux/mfd/cros_ec_commands.h | 81 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 81 insertions(+) > > diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h > index cc0768e..fe33a81 100644 > --- a/include/linux/mfd/cros_ec_commands.h > +++ b/include/linux/mfd/cros_ec_commands.h > @@ -804,6 +804,8 @@ enum ec_feature_code { > EC_FEATURE_MOTION_SENSE_FIFO = 24, > /* EC has RTC feature that can be controlled by host commands */ > EC_FEATURE_RTC = 27, > + /* EC supports CEC commands */ > + EC_FEATURE_CEC = 35, > }; > > #define EC_FEATURE_MASK_0(event_code) (1UL << (event_code % 32)) > @@ -2078,6 +2080,12 @@ enum ec_mkbp_event { > /* EC sent a sysrq command */ > EC_MKBP_EVENT_SYSRQ = 6, > > + /* Notify the AP that something happened on CEC */ > + EC_MKBP_EVENT_CEC_EVENT = 8, > + > + /* Send an incoming CEC message to the AP */ > + EC_MKBP_EVENT_CEC_MESSAGE = 9, > + > /* Number of MKBP events */ > EC_MKBP_EVENT_COUNT, > }; > @@ -2850,6 +2858,79 @@ struct ec_params_reboot_ec { > > /*****************************************************************************/ > /* > + * HDMI CEC commands > + * > + * These commands are for sending and receiving message via HDMI CEC > + */ > +#define EC_MAX_CEC_MSG_LEN 16 > + > +/* CEC message from the AP to be written on the CEC bus */ > +#define EC_CMD_CEC_WRITE_MSG 0x00B8 > + > +/** > + * struct ec_params_cec_write - Message to write to the CEC bus > + * @msg: message content to write to the CEC bus > + */ > +struct ec_params_cec_write { > + uint8_t msg[EC_MAX_CEC_MSG_LEN]; > +} __packed; > + > +/* Set various CEC parameters */ > +#define EC_CMD_CEC_SET 0x00BA > + > +/** > + * struct ec_params_cec_set - CEC parameters set > + * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS > + * @val: in case cmd is CEC_CMD_ENABLE, this field can be 0 to disable CEC > + * or 1 to enable CEC functionnality, in case cmd is CEC_CMD_LOGICAL_ADDRESS, > + * this field encodes the requested logical address between 0 and 15 > + * or 0xff to unregister > + */ > +struct ec_params_cec_set { > + uint8_t cmd; /* enum cec_command */ > + uint8_t val; > +} __packed; > + > +/* Read various CEC parameters */ > +#define EC_CMD_CEC_GET 0x00BB > + > +/** > + * struct ec_params_cec_get - CEC parameters get > + * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS > + */ > +struct ec_params_cec_get { > + uint8_t cmd; /* enum cec_command */ > +} __packed; > + > +/** > + * struct ec_response_cec_get - CEC parameters get response > + * @val: in case cmd was CEC_CMD_ENABLE, this field will 0 if CEC is > + * disabled or 1 if CEC functionnality is enabled, > + * in case cmd was CEC_CMD_LOGICAL_ADDRESS, this will encode the > + * configured logical address between 0 and 15 or 0xff if unregistered > + */ > +struct ec_response_cec_get { > + uint8_t val; > +} __packed; > + > +/* CEC parameters command */ > +enum ec_cec_command { > + /* CEC reading, writing and events enable */ > + CEC_CMD_ENABLE, > + /* CEC logical address */ > + CEC_CMD_LOGICAL_ADDRESS, > +}; > + > +/* Events from CEC to AP */ > +enum mkbp_cec_event { > + /* Outgoing message was acknowledged by a follower */ > + EC_MKBP_CEC_SEND_OK = BIT(0), > + /* Outgoing message was not acknowledged */ > + EC_MKBP_CEC_SEND_FAILED = BIT(1), > +}; > + > +/*****************************************************************************/ > +/* > * Special commands > * > * These do not follow the normal rules for commands. See each command for >
diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h index cc0768e..fe33a81 100644 --- a/include/linux/mfd/cros_ec_commands.h +++ b/include/linux/mfd/cros_ec_commands.h @@ -804,6 +804,8 @@ enum ec_feature_code { EC_FEATURE_MOTION_SENSE_FIFO = 24, /* EC has RTC feature that can be controlled by host commands */ EC_FEATURE_RTC = 27, + /* EC supports CEC commands */ + EC_FEATURE_CEC = 35, }; #define EC_FEATURE_MASK_0(event_code) (1UL << (event_code % 32)) @@ -2078,6 +2080,12 @@ enum ec_mkbp_event { /* EC sent a sysrq command */ EC_MKBP_EVENT_SYSRQ = 6, + /* Notify the AP that something happened on CEC */ + EC_MKBP_EVENT_CEC_EVENT = 8, + + /* Send an incoming CEC message to the AP */ + EC_MKBP_EVENT_CEC_MESSAGE = 9, + /* Number of MKBP events */ EC_MKBP_EVENT_COUNT, }; @@ -2850,6 +2858,79 @@ struct ec_params_reboot_ec { /*****************************************************************************/ /* + * HDMI CEC commands + * + * These commands are for sending and receiving message via HDMI CEC + */ +#define EC_MAX_CEC_MSG_LEN 16 + +/* CEC message from the AP to be written on the CEC bus */ +#define EC_CMD_CEC_WRITE_MSG 0x00B8 + +/** + * struct ec_params_cec_write - Message to write to the CEC bus + * @msg: message content to write to the CEC bus + */ +struct ec_params_cec_write { + uint8_t msg[EC_MAX_CEC_MSG_LEN]; +} __packed; + +/* Set various CEC parameters */ +#define EC_CMD_CEC_SET 0x00BA + +/** + * struct ec_params_cec_set - CEC parameters set + * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS + * @val: in case cmd is CEC_CMD_ENABLE, this field can be 0 to disable CEC + * or 1 to enable CEC functionnality, in case cmd is CEC_CMD_LOGICAL_ADDRESS, + * this field encodes the requested logical address between 0 and 15 + * or 0xff to unregister + */ +struct ec_params_cec_set { + uint8_t cmd; /* enum cec_command */ + uint8_t val; +} __packed; + +/* Read various CEC parameters */ +#define EC_CMD_CEC_GET 0x00BB + +/** + * struct ec_params_cec_get - CEC parameters get + * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS + */ +struct ec_params_cec_get { + uint8_t cmd; /* enum cec_command */ +} __packed; + +/** + * struct ec_response_cec_get - CEC parameters get response + * @val: in case cmd was CEC_CMD_ENABLE, this field will 0 if CEC is + * disabled or 1 if CEC functionnality is enabled, + * in case cmd was CEC_CMD_LOGICAL_ADDRESS, this will encode the + * configured logical address between 0 and 15 or 0xff if unregistered + */ +struct ec_response_cec_get { + uint8_t val; +} __packed; + +/* CEC parameters command */ +enum ec_cec_command { + /* CEC reading, writing and events enable */ + CEC_CMD_ENABLE, + /* CEC logical address */ + CEC_CMD_LOGICAL_ADDRESS, +}; + +/* Events from CEC to AP */ +enum mkbp_cec_event { + /* Outgoing message was acknowledged by a follower */ + EC_MKBP_CEC_SEND_OK = BIT(0), + /* Outgoing message was not acknowledged */ + EC_MKBP_CEC_SEND_FAILED = BIT(1), +}; + +/*****************************************************************************/ +/* * Special commands * * These do not follow the normal rules for commands. See each command for