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Subject[PATCH v6 5/7] usb: typec: displayport: Fill the negotiated SVDM Version in the header
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VDM header now requires SVDM Version. Get it from typec_partner.

Signed-off-by: Kyle Tso <kyletso@google.com>
---
Changes since v5:
- follow the changes of "usb: typec: Manage SVDM version"

drivers/usb/typec/altmodes/displayport.c | 17 +++++++++++++----
1 file 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)
--
2.30.0.365.g02bc693789-goog
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