Hi Guenter
On 06/24/2016 05:47 AM, Guenter Roeck wrote:
Hi Chris,
On Thu, Jun 23, 2016 at 5:51 AM, Chris Zhong <z...@rock-chips.com> wrote:
Add a PHY provider driver for the rk3399 SoC Type-c PHY. The USB
Type-C PHY is designed to support the USB3 and DP applications. The
PHY basically has two main components: USB3 and DisplyPort. USB3
operates in SuperSpeed mode and the DP can operate at RBR, HBR and
HBR2 data rates.
Signed-off-by: Chris Zhong <z...@rock-chips.com>
Signed-off-by: Kever Yang <kever.y...@rock-chips.com>
[ ... ]
+
+static void tcphy_get_state(struct rockchip_typec_phy *tcphy,
+ struct extcon_dev *edev)
+{
+ int mode;
+ bool plugged, flip, pin_assign, dfp, ufp, dp;
+
+ ufp = extcon_get_cable_state_(edev, EXTCON_USB);
+ dfp = extcon_get_cable_state_(edev, EXTCON_USB_HOST);
+ dp = extcon_get_cable_state_(edev, EXTCON_DISP_DP);
+ flip = extcon_get_cable_state_(edev, EXTCON_TYPEC_POLARITY);
+ pin_assign = extcon_get_cable_state_(edev, EXTCON_TYPEC_PIN_ASSIGN);
+
+ plugged = ufp | dfp | dp;
+ tcphy->flip = flip;
+
+ if (plugged) {
+ if (ufp) {
+ mode = MODE_UFP_USB;
+ } else if (dfp && !dp) {
+ mode = MODE_DFP_USB;
+ } else if (dfp && dp) {
+ mode = MODE_DFP_USB | MODE_DFP_DP;
+ tcphy->pin_assign = pin_assign ? PIN_MAP_D : PIN_MAP_B;
+ } else {
+ mode = MODE_DFP_DP;
+ tcphy->pin_assign = pin_assign ? PIN_MAP_C : PIN_MAP_A;
I am having trouble extracting pin_assign from our code. What
determines if map A or C should be selected ?
Thanks,
Guenter
Oh, forgot rename the macro:
PIN_MAP_ should be PIN_ASSIGN_
IF EXTCON_TYPEC_PIN_ASSIGN is attached, Type-C get
Pin_Assignment_C(for DP only mode) or Pin_Assignment_D(for DP alt mode),
if detached, it get the default Assignment: A(for DP only mode) or
B(for DP alt mode),.
I am going to add a comment for describe which PIN_ASSIGN_ should be
selected
in next version, if no one disagrees the usage of cable
