From: Li Jun <jun.li-3arQi8VN3Tc@public.gmane.org>
To: gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org,
linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
heikki.krogerus-VuQAYsv1563Yd54FQh9/CA@public.gmane.org
Cc: yueyao-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
o_leveque-1tsiiZ//OF9QFI55V6+gNQ@public.gmane.org,
peter.chen-3arQi8VN3Tc@public.gmane.org,
aisheng.dong-3arQi8VN3Tc@public.gmane.org,
jun.li-3arQi8VN3Tc@public.gmane.org,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH resend 08/12] staging: typec: tcpci: correct drp toggling
Date: Tue, 26 Sep 2017 12:05:19 +0800 [thread overview]
Message-ID: <1506398723-19359-9-git-send-email-jun.li@nxp.com> (raw)
In-Reply-To: <1506398723-19359-1-git-send-email-jun.li-3arQi8VN3Tc@public.gmane.org>
Per tcpci spec 4.4.5.2 ROLE_CONTROL description: "the TCPM shall
write B6 (DRP) =1b and the starting value of Rp/Rd to B3..0 (CC1/CC2)
to indicate DRP autonomous toggling mode to the TCPC", so add CC1/CC2
setting, also we should issue COMMAND.Look4Connection to start it.
Signed-off-by: Li Jun <jun.li-3arQi8VN3Tc@public.gmane.org>
---
drivers/staging/typec/tcpci.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c
index 851d026..cea67f9 100644
--- a/drivers/staging/typec/tcpci.c
+++ b/drivers/staging/typec/tcpci.c
@@ -109,6 +109,7 @@ static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc,
{
struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
unsigned int reg = TCPC_ROLE_CTRL_DRP;
+ int ret;
switch (cc) {
default:
@@ -126,7 +127,19 @@ static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc,
break;
}
- return regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
+ if (cc == TYPEC_CC_RD)
+ reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT);
+ else
+ reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT);
+
+ ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
+ if (ret < 0)
+ return ret;
+
+ return regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_LOOK4CONNECTION);
}
static enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink)
--
2.6.6
--
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next prev parent reply other threads:[~2017-09-26 4:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-26 4:05 [PATCH resend 00/12] staging: typec: tcpci: move out of staging Li Jun
[not found] ` <1506398723-19359-1-git-send-email-jun.li-3arQi8VN3Tc@public.gmane.org>
2017-09-26 4:05 ` [PATCH resend 01/12] usb: typec: add API to get port type and preferred role Li Jun
2017-09-26 4:05 ` [PATCH resend 02/12] usb: typec: add basic typec properties Li Jun
[not found] ` <1506398723-19359-3-git-send-email-jun.li-3arQi8VN3Tc@public.gmane.org>
2017-10-05 20:44 ` Rob Herring
2017-10-09 11:21 ` Jun Li
[not found] ` <DB4PR04MB07683A52DD500A40C2B9047A89740-tLF+feb1Bz6HC8XOQgzeLs9NdZoXdze2vxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2017-10-09 13:12 ` Rob Herring
2017-09-26 4:05 ` [PATCH resend 03/12] staging: typec: tcpci: add documentation for tcpci Li Jun
2017-09-26 4:05 ` [PATCH resend 04/12] staging: typec: tcpci: support port config passed via dt Li Jun
2017-09-26 4:05 ` [PATCH resend 05/12] staging: typec: tcpci: register port before request irq Li Jun
2017-09-26 4:05 ` [PATCH resend 06/12] staging: typec: tcpci: enable vbus detection Li Jun
2017-09-26 4:05 ` [PATCH resend 07/12] typec: tcpm: add starting value for drp toggling Li Jun
2017-09-26 4:05 ` Li Jun [this message]
2017-09-26 4:05 ` [PATCH resend 09/12] usb: typec: tcpm: only drives the connected cc line when attached Li Jun
[not found] ` <1506398723-19359-10-git-send-email-jun.li-3arQi8VN3Tc@public.gmane.org>
2017-09-27 14:30 ` kbuild test robot
2017-09-26 4:05 ` [PATCH resend 10/12] staging: typec: tcpci: update set_cc for different state Li Jun
2017-09-26 4:05 ` [PATCH resend 11/12] staging: typec: tcpci: Only touch target bit when enable vconn Li Jun
2017-09-26 4:05 ` [PATCH resend 12/12] staging: typec: tcpci: move tcpci driver out of staging Li Jun
2017-10-27 0:42 ` [PATCH resend 00/12] staging: typec: tcpci: move " Guenter Roeck
[not found] ` <96d37f9b-f04d-f923-ec09-b25fd62a90be-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2017-10-27 1:17 ` Jun Li
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