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authorKyle Tso <kyletso@google.com>2021-02-05 11:34:13 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-02-09 11:48:55 +0100
commit4c93cad8cc78bd382aded3155cf05736ecfd0910 (patch)
tree1599568e592a0153183bc2d24c3f5dca09c069d1 /drivers/usb
parent372adf075a43028a62e6123b9cd969f8f20e4afc (diff)
usb: typec: displayport: Fill the negotiated SVDM Version in the header
VDM header now requires SVDM Version. Get it from typec_partner. Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Kyle Tso <kyletso@google.com> Link: https://lore.kernel.org/r/20210205033415.3320439-6-kyletso@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/typec/altmodes/displayport.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
index 0abc3121238f..b7f094435b00 100644
--- a/drivers/usb/typec/altmodes/displayport.c
+++ b/drivers/usb/typec/altmodes/displayport.c
@@ -15,8 +15,8 @@
#include <linux/usb/typec_dp.h>
#include "displayport.h"
-#define DP_HEADER(_dp, cmd) (VDO((_dp)->alt->svid, 1, SVDM_VER_1_0, cmd) | \
- VDO_OPOS(USB_TYPEC_DP_MODE))
+#define DP_HEADER(_dp, ver, cmd) (VDO((_dp)->alt->svid, 1, ver, cmd) \
+ | VDO_OPOS(USB_TYPEC_DP_MODE))
enum {
DP_CONF_USB,
@@ -156,9 +156,14 @@ static int dp_altmode_configured(struct dp_altmode *dp)
static int dp_altmode_configure_vdm(struct dp_altmode *dp, u32 conf)
{
- u32 header = DP_HEADER(dp, DP_CMD_CONFIGURE);
+ int svdm_version = typec_altmode_get_svdm_version(dp->alt);
+ u32 header;
int ret;
+ if (svdm_version < 0)
+ return svdm_version;
+
+ header = DP_HEADER(dp, svdm_version, DP_CMD_CONFIGURE);
ret = typec_altmode_notify(dp->alt, TYPEC_STATE_SAFE, &dp->data);
if (ret) {
dev_err(&dp->alt->dev,
@@ -181,6 +186,7 @@ static int dp_altmode_configure_vdm(struct dp_altmode *dp, u32 conf)
static void dp_altmode_work(struct work_struct *work)
{
struct dp_altmode *dp = container_of(work, struct dp_altmode, work);
+ int svdm_version;
u32 header;
u32 vdo;
int ret;
@@ -194,7 +200,10 @@ static void dp_altmode_work(struct work_struct *work)
dev_err(&dp->alt->dev, "failed to enter mode\n");
break;
case DP_STATE_UPDATE:
- header = DP_HEADER(dp, DP_CMD_STATUS_UPDATE);
+ svdm_version = typec_altmode_get_svdm_version(dp->alt);
+ if (svdm_version < 0)
+ break;
+ header = DP_HEADER(dp, svdm_version, DP_CMD_STATUS_UPDATE);
vdo = 1;
ret = typec_altmode_vdm(dp->alt, header, &vdo, 2);
if (ret)