On Mon, Jan 30, 2017 at 11:44 PM, Sebastian Reichel <sre@xxxxxxxxxx> wrote: > Hi, > > On Tue, Jan 31, 2017 at 04:02:41AM +0100, Sebastian Reichel wrote: >> On Wed, Jan 25, 2017 at 02:23:38PM -0600, Rob Herring wrote: >> > Here's V3 of the serdev bus support with all the review feedback so far >> > incorporated. Greg applied the first 4 patches already. I also found a >> > problem in the tty_port_wakeup changes and have fixed that. >> > >> > I've added serdev support to the BT hci_ll.c driver as it turns out it works >> > on newer TI chips too, but just needed firmware loading. That avoids the >> > impossible mess of cleaning up the TI-ST driver, and it's in a much closer >> > state to being ready for upstream. I've sent that out separately. >> > >> > Changelog is in individual patches. Previous versions are here[1][2]. This >> > series and the mentioned drivers can be found here[3]. >> > >> > Rob >> > >> > [1] http://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1304151.html >> > [2] http://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1311650.html >> > [3] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git serial-bus-v4 >> >> I rebased my nokia bluetooth driver on top of [3]. It's not yet >> working, but everything added by this patchset (and >> "bluetooth: hci_uart: add serdev driver support library") seems >> to work as expected, so for the whole series: >> >> Tested-By: Sebastian Reichel <sre@xxxxxxxxxx> Thanks. > FWIW, I got bluetooth on top of your patchset working on N950. N900 > is not yet tested and probably does not yet work (it's more picky > about flow control and usage of the wakeup gpios). You can find a > branch with the additional patches @ [4]. I had to add serdev > functions to wait for TX buffer depletion and checking CTS. Apart > from that flow control only worked correctly when also taking care > of RTS (like hci_uart_set_flow_control does). I'd originally copied hci_uart_set_flow_control, but then realized that it didn't really do what I wanted. What I have now is turn on or off h/w control (i.e. off is no RTS/CTS signals connected). What hci_uart_set_flow_control does is enable h/w flow control (enable=false) or force assert RTS (enable=true). I guess it didn't help that I used the same _set_flow_control naming with different behavior. I did expect we'd also need something for RTS control, but figured we'd add it as needed and wanted to come up with something a bit clearer as to the function (i.e. serdev_device_pause_rx or serdev_device_assert_rts). > I noticed, that you did not yet write any DT bindings for your > bluetooth slaves. Did you already decide for a location? Marvell BT is already in bindings/net/. Rob > > [4] git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-n900.git serial-bus-v4-nokia-bt > > -- Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
