Re: [PATCH 2/3] usb: typec: fusb302: Implement start_srp_connection_detect

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Hi,

Thank you for the review.

On 14-04-19 09:40, Sergei Shtylyov wrote:
Hello!

On 13.04.2019 23:39, Hans de Goede wrote:

When in single role port mode, we most start single-role toggling to

    Must, perhaps?

Right, fixed for the upcoming v2 of the patch-set.

get an interrupt when a device / cable gets plugged into the port.

This commit implements the tcpc_dev start_srp_connection_detect callback
for this.

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
  drivers/usb/typec/tcpm/fusb302.c | 30 ++++++++++++++++++++++++++++++
  1 file changed, 30 insertions(+)

diff --git a/drivers/usb/typec/tcpm/fusb302.c b/drivers/usb/typec/tcpm/fusb302.c
index 6ea6199caafa..30413a45104f 100644
--- a/drivers/usb/typec/tcpm/fusb302.c
+++ b/drivers/usb/typec/tcpm/fusb302.c
@@ -876,6 +876,34 @@ static int tcpm_set_roles(struct tcpc_dev *dev, bool attached,
      return ret;
  }
+static int tcpm_start_srp_connection_detect(struct tcpc_dev *dev,
+                        enum typec_cc_status cc)
+{
+    struct fusb302_chip *chip = container_of(dev, struct fusb302_chip,
+                         tcpc_dev);
+    int ret = 0;

    This initializer is useless.

Ack, this part is gone for v2 of the patch though.

Regards,

Hans




+
+    mutex_lock(&chip->lock);
+    ret = fusb302_set_src_current(chip, cc_src_current[cc]);
+    if (ret < 0) {
+        fusb302_log(chip, "unable to set src current %s, ret=%d",
+                typec_cc_status_name[cc], ret);
+        goto done;
+    }
+    ret = fusb302_set_toggling(chip, (cc == TYPEC_CC_RD) ?
+                     TOGGLING_MODE_SNK : TOGGLING_MODE_SRC);
+    if (ret < 0) {
+        fusb302_log(chip,
+                "unable to start srp toggling, ret=%d", ret);
+        goto done;
+    }
+    fusb302_log(chip, "start srp toggling");
+done:
+    mutex_unlock(&chip->lock);
+
+    return ret;
+}
+
  static int tcpm_start_drp_toggling(struct tcpc_dev *dev,
                     enum typec_cc_status cc)
  {
[...]

MBR, Sergei



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