Hi,
On 02-10-17 09:07, Hans de Goede wrote:
Hi,
First of all Frédéric, thank you very much for working on this,
this is a very much needed patch series.
I've been testing this on a GPD pocket which has a BCM2E7E
ACPI device for the BT which is part of the BCM43562A wifi/bt
combo on this device.
2 remarks:
1) The following errors show up with this series:
[ 87.059091] synth uevent: /devices/pci0000:00/8086228A:00/serial1: failed to send uevent
[ 87.059097] serial serial1: uevent: failed to send synthetic uevent
[ 87.059178] synth uevent: /devices/pci0000:00/8086228A:01/serial2: failed to send uevent
[ 87.059180] serial serial2: uevent: failed to send synthetic uevent
[ 87.062665] synth uevent: /devices/pnp0/00:01/serial0: failed to send uevent
[ 87.062671] serial serial0: uevent: failed to send synthetic uevent
This needs to be fixed :) I haven't looked into this yet.
2) As I already suspected when reading the patches, we cannot
move the ACPI ids over 1 by 1. The first 2 patches in the series
cause all BCM2E* ACPI devices to no longer get enumerated as
platform devices, instead they now get enumerated as serdevs.
So adding only the known to work ACPI ids to the acpi_match_table
for the bcm_serdev_driver has the undesirable result that it makes
sure that the other ACPI-ids will not work, as there are not
platform devices instantiated for the platform driver to bind to.
I started with simplifying your patch to this:
From f8728f5440c85f7e5584ac1eafa1b090b2042276 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Danis?= <frederic.danis.oss@xxxxxxxxx>
Date: Thu, 7 Sep 2017 14:10:14 +0200
Subject: [PATCH] Bluetooth: hci_bcm: Make ACPI enumerated HCIs use serdev
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Now that the ACPI subsys instantiates ACPI enumerated HCIs as serdevs,
the ACPI ids for them should be part of the bcm_serdev_driver's
acpi_match_table.
Signed-off-by: Frédéric Danis <frederic.danis.oss@xxxxxxxxx>
[hdegoede: Move all ACPI ids over]
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/bluetooth/hci_bcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 2285ca673ae3..4db777bb0049 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -942,7 +942,6 @@ static struct platform_driver bcm_driver = {
.remove = bcm_remove,
.driver = {
.name = "hci_bcm",
- .acpi_match_table = ACPI_PTR(bcm_acpi_match),
.pm = &bcm_pm_ops,
},
};
@@ -988,6 +987,7 @@ static struct serdev_device_driver bcm_serdev_driver = {
.driver = {
.name = "hci_uart_bcm",
.of_match_table = of_match_ptr(bcm_bluetooth_of_match),
+ .acpi_match_table = ACPI_PTR(bcm_acpi_match),
},
};
--
2.14.2
Unfortunately that is not good enough. The platform driver code also
has (runtime) pm support using gpios and a host-wake interrupt, which
the serdev code all lacks and without driving the shutdown gpio to not
shutdown the BT device connected to the UART we not only are lacking
pm support, but BT does not work at all.
So yesterday evening I did a patch to merge all that into the serdev hci_bcm
code and throw away the platform code as I don't think any users will be left
after this. With this functionality for the BCM2E7E ACPI device is restored
again, without needing to do a btattach from userspace, which is great :)
I've attached the resulting patch. In the mean time I've realized that
this approach is going to make merging hard. So I'm going to redo the changes
so that we can have both a complete (with runtime-pm, gpios, etc.) serdev
driver and keep the platform driver for now. Then we can first merge the
hci_bcm changes to make the serdev driver side complete and once those are
merged merge the matching ACPI subsys changes without having a window in
between where things will not work.
Ok, I've just finished and send out v1 of a patch-series adding (runtime)pm,
GPIO and IRQ support to the serdev based code paths in hci_bcm.c .
Regards,
Hans
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