quoted
quoted
quoted
quoted
"Joseph" == Joseph CHANG [off-list ref] writes:
> Enable chip's EP3 interrupt to get the link-up notify soon
> immediately.
Sorry, what do you mean about 'soon immediately'?
> +
> + /* Always return 8-bytes data to host per interrupt-interval */
> + dm_write_reg(dev, DM_USB_CTRL, USB_CTRL_EP3ACK);
Why would we want to do that instead of the current setup that afaik
only returns data when the link status changes?
--
Bye, Peter Korsgaard
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
After check more.
I think this is also to fix the bug to dm962x chip too.
If keep no patch below:
> +
> + /* Always return 8-bytes data to host per interrupt-interval */
> + dm_write_reg(dev, DM_USB_CTRL, USB_CTRL_EP3ACK);
When attach dm962x to linux USB host,
The reg 'DM_USB_CTRL' get default value 0x00
This means the USB interrupt routine below,
.status = dm9601_status,
will be called by events (they are: RX data found, TX complete, link change)
Unfortunately, the link change CAN not work to trigger this event call.
So I do
> + dm_write_reg(dev, DM_USB_CTRL, USB_CTRL_EP3ACK);
That
.status = dm9601_status,
will be called by time interval.
* ".status = dm9601_status" is the way to tell the kernel new link
state,
I can find it is bt 'usbnet_link_change( xx)' in ".status =
dm9601_status".
Information:
--------------------------------------------------------------------------------
--------
In my [PATCH 2/3],
+#define DM_EP3I_VAL 0x07
+ /* Render eeprom if need, WORD12 render, need 0x0007 */
+ dm_eeprom_render(dev, 12, DM_EP3I_VAL, 0xffff); }
It can determine the above time interval.
If user define
+#define DM_EP3I_VAL 0x0f
The time interval will be around 1 second.
Note: Must reset the device once to get effect.
--------------------------------------------------------------------------------
--------
Best Regards,
Joseph CHANG
System Application Engineering Division
Davicom Semiconductor, Inc.
No. 6 Li-Hsin 6th Rd., Science-Based Park,
Hsin-Chu, Taiwan.
Tel: 886-3-5798797 Ex 8534
Fax: 886-3-5646929
Web: http://www.davicom.com.tw
-----Original Message-----
From: Peter Korsgaard [mailto:jacmet@gmail.com] On Behalf Of Peter Korsgaard
Sent: Friday, March 11, 2016 5:55 AM
To: Joseph CHANG
Cc: Peter Korsgaard; netdev@vger.kernel.org; linux-usb@vger.kernel.org;
linux-kernel@vger.kernel.org; Joseph Chang
Subject: Re: [PATCH 1/3] dm9601: enable EP3 interrupt
quoted
quoted
quoted
quoted
"Joseph" == Joseph CHANG [off-list ref] writes:
> Enable chip's EP3 interrupt to get the link-up notify soon
> immediately.
Sorry, what do you mean about 'soon immediately'?
> +
> + /* Always return 8-bytes data to host per interrupt-interval */
> + dm_write_reg(dev, DM_USB_CTRL, USB_CTRL_EP3ACK);
Why would we want to do that instead of the current setup that afaik
only returns data when the link status changes?
--
Bye, Peter Korsgaard
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.