[PATCH 02/13] scpi: Add alternative legacy structures and macros

Sudeep Holla
2016-08-18T17:16:34Z

On 18/08/16 11:10, Neil Armstrong wrote:
> In order to support the legacy SCPI protocol variant, add back the structures
> and macros that varies against the final specification.
>
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
> I checked against Amlogic implementation documentation and on-device, the channel selection
> via legacy_scpi_get_chan() is needed and fails without it.
> The sender_id is not needed so it was dropped.
>
> drivers/firmware/arm_scpi.c | 84 +++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 84 insertions(+)
>
> diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c
> index 403783a..0bb6134 100644
> --- a/drivers/firmware/arm_scpi.c
> +++ b/drivers/firmware/arm_scpi.c

[...]

> @@ -183,6 +224,11 @@ struct scpi_shared_mem {
> u8 payload[0];
> } __packed;
>
> +struct legacy_scpi_shared_mem {
> + __le32 status;
> + u8 payload[0];
> +} __packed;
> +
> struct scp_capabilities {
> __le32 protocol_version;
> __le32 event_version;
> @@ -208,6 +254,12 @@ struct clk_set_value {
> __le32 rate;
> } __packed;
>
> +struct legacy_clk_set_value {
> + __le32 rate;
> + __le16 id;
> + __le16 reserved;
> +} __packed;
> +
> struct dvfs_info {
> __le32 header;
> struct {
> @@ -237,6 +289,10 @@ struct sensor_value {
> __le32 hi_val;
> } __packed;
>
> +struct legacy_sensor_value {
> + __le32 val;
> +} __packed;
> +

Not required, new one is backward compatible. Otherwise this patch looks
fine.

--
Regards,
Sudeep