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greybus: svc: implement svc_intf_{vsys,refclk,unipro}_{enable,disable} operations

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Add SVC operations for fine grain control over vsys, refclk, and unipro
port power.

Testing done: used "new" firmware boot sequence to verify that modules
              were correctly detected and booted.

Signed-off-by: Jeffrey Carlyle <jcarlyle@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Jeffrey Carlyle 2016-05-06 12:43:52 -07:00 committed by Greg Kroah-Hartman
parent 03b4fa4b5d
commit 144763bf8e
2 changed files with 94 additions and 3 deletions
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43
drivers/staging/greybus/greybus_protocols.h
View file

@ -840,6 +840,12 @@ struct gb_spi_transfer_response {
#define GB_SVC_TYPE_TIMESYNC_PING 0x1a
#define GB_SVC_TYPE_MODULE_INSERTED 0x1f
#define GB_SVC_TYPE_MODULE_REMOVED 0x20
#define GB_SVC_TYPE_INTF_VSYS_ENABLE 0x21
#define GB_SVC_TYPE_INTF_VSYS_DISABLE 0x22
#define GB_SVC_TYPE_INTF_REFCLK_ENABLE 0x23
#define GB_SVC_TYPE_INTF_REFCLK_DISABLE 0x24
#define GB_SVC_TYPE_INTF_UNIPRO_ENABLE 0x25
#define GB_SVC_TYPE_INTF_UNIPRO_DISABLE 0x26
#define GB_SVC_TYPE_INTF_ACTIVATE 0x27
#define GB_SVC_TYPE_INTF_MAILBOX_EVENT 0x29
@ -954,6 +960,43 @@ struct gb_svc_route_destroy_request {
} __packed;
/* route destroy response has no payload */
/* used for svc_intf_vsys_{enable,disable} */
struct gb_svc_intf_vsys_request {
__u8 intf_id;
} __packed;
struct gb_svc_intf_vsys_response {
__u8 result_code;
#define GB_SVC_INTF_VSYS_OK 0x00
#define GB_SVC_INTF_VSYS_BUSY 0x01
#define GB_SVC_INTF_VSYS_FAIL 0x02
} __packed;
/* used for svc_intf_refclk_{enable,disable} */
struct gb_svc_intf_refclk_request {
__u8 intf_id;
} __packed;
struct gb_svc_intf_refclk_response {
__u8 result_code;
#define GB_SVC_INTF_REFCLK_OK 0x00
#define GB_SVC_INTF_REFCLK_BUSY 0x01
#define GB_SVC_INTF_REFCLK_FAIL 0x02
} __packed;
/* used for svc_intf_unipro_{enable,disable} */
struct gb_svc_intf_unipro_request {
__u8 intf_id;
} __packed;
struct gb_svc_intf_unipro_response {
__u8 result_code;
#define GB_SVC_INTF_UNIPRO_OK 0x00
#define GB_SVC_INTF_UNIPRO_BUSY 0x01
#define GB_SVC_INTF_UNIPRO_FAIL 0x02
#define GB_SVC_INTF_UNIPRO_NOT_OFF 0x03
} __packed;
struct gb_svc_timesync_enable_request {
__u8 count;
__le64 frame_time;

54
drivers/staging/greybus/svc.c
View file

@ -257,22 +257,70 @@ int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id)
int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable)
{
/* FIXME: implement */
struct gb_svc_intf_vsys_request request;
struct gb_svc_intf_vsys_response response;
int type, ret;
request.intf_id = intf_id;
if (enable)
type = GB_SVC_TYPE_INTF_VSYS_ENABLE;
else
type = GB_SVC_TYPE_INTF_VSYS_DISABLE;
ret = gb_operation_sync(svc->connection, type,
&request, sizeof(request),
&response, sizeof(response));
if (ret < 0)
return ret;
if (response.result_code != GB_SVC_INTF_VSYS_OK)
return -EREMOTEIO;
return 0;
}
int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable)
{
/* FIXME: implement */
struct gb_svc_intf_refclk_request request;
struct gb_svc_intf_refclk_response response;
int type, ret;
request.intf_id = intf_id;
if (enable)
type = GB_SVC_TYPE_INTF_REFCLK_ENABLE;
else
type = GB_SVC_TYPE_INTF_REFCLK_DISABLE;
ret = gb_operation_sync(svc->connection, type,
&request, sizeof(request),
&response, sizeof(response));
if (ret < 0)
return ret;
if (response.result_code != GB_SVC_INTF_REFCLK_OK)
return -EREMOTEIO;
return 0;
}
int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable)
{
/* FIXME: implement */
struct gb_svc_intf_unipro_request request;
struct gb_svc_intf_unipro_response response;
int type, ret;
request.intf_id = intf_id;
if (enable)
type = GB_SVC_TYPE_INTF_UNIPRO_ENABLE;
else
type = GB_SVC_TYPE_INTF_UNIPRO_DISABLE;
ret = gb_operation_sync(svc->connection, type,
&request, sizeof(request),
&response, sizeof(response));
if (ret < 0)
return ret;
if (response.result_code != GB_SVC_INTF_UNIPRO_OK)
return -EREMOTEIO;
return 0;
}