[PATCH v6 5/7] usb: typec: displayport: Fill the negotiated SVDM Version in the header
From: Kyle Tso <hidden>
Date: 2021-02-05 03:36:53
Also in:
linux-usb, lkml
Subsystem:
the rest, usb subsystem, usb typec bus for alternate modes, usb typec class · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Heikki Krogerus
VDM header now requires SVDM Version. Get it from typec_partner. Signed-off-by: Kyle Tso <redacted> --- 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