On 24/05/2018 11:11, Hans Verkuil wrote:
> On 24/05/18 10:54, 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@xxxxxxxxxxxx>
>> Tested-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
>> ---
>> include/linux/mfd/cros_ec_commands.h | 85 ++++++++++++++++++++++++++++++++++++
>> 1 file changed, 85 insertions(+)
>>
>> diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
>> index cc0768e..ea9646f 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_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 +2858,83 @@ struct ec_params_reboot_ec {
>>
>> /*****************************************************************************/
>> /*
>> + * HDMI CEC commands
>> + *
>> + * These commands are for sending and receiving message via HDMI CEC
>> + */
>> +#define MAX_CEC_MSG_LEN 16
>
> Can you rename this to EC_MAX_CEC_MSG_LEN? It is way too similar to the
> CEC_MAX_MSG_LEN defined in cec.h. Since this is a property of the EC hw/fw
> it makes sense to prefix it accordingly.
Yes, it will make sense.
>
>> +
>> +/* 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[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
>> + * @enable: in case cmd is CEC_CMD_ENABLE, this field can be 0 to disable CEC
>> + * or 1 to enable CEC functionnality
>> + * @address: 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 */
>> + union {
>> + uint8_t enable;
>> + uint8_t address;
>> + };
>> +} __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
>> + * @enable: in case cmd was CEC_CMD_ENABLE, this field will 0 if CEC is
>> + * disabled or 1 if CEC functionnality is enabled
>> + * @address: 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 {
>> + union {
>> + uint8_t enable;
>> + uint8_t address;
>> + };
>> +} __packed;
>> +
>> +/* CEC parameters command */
>> +enum cec_command {
>
> Same here: shouldn't all of this be prefixed with ec_ or EC_?
Exact, I will prefix them.
Thanks,
Neil
>
> Regards,
>
> Hans
>
>> + /* 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 {
>> + EC_MKBP_CEC_SEND_OK = BIT(0),
>> + EC_MKBP_CEC_SEND_FAILED = BIT(1),
>> +};
>> +
>> +/*****************************************************************************/
>> +/*
>> * Special commands
>> *
>> * These do not follow the normal rules for commands. See each command for
>>
>
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