Johan writes:

USB-serial fixes for 5.1-rc1

Here are a couple of new device ids for 5.1-rc1.

All have been in linux-next with no reported issues.

Signed-off-by: Johan Hovold <johan@kernel.org>

* tag 'usb-serial-5.1-rc1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  USB: serial: ftdi_sio: add ID for Hjelmslund Electronics USB485
  USB: serial: cp210x: add ID for Ingenico 3070

Johan writes:

USB-serial updates for 5.1-rc1

Here are the USB-serial updates for 5.1-rc1, including:

 - support for the last three GPIOs on cp2102n devices
 - gpio support for cp2104
 - support for using cp210x gpios with autosuspend
 - proper error handling for unsupported cp2105 line speeds

Included is also a new modem device id.

All have been in linux-next with no reported issues.

Signed-off-by: Johan Hovold <johan@kernel.org>

* tag 'usb-serial-5.1-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  USB: serial: option: add Telit ME910 ECM composition
  USB: serial: cp210x: fix GPIO in autosuspend
  USB: serial: cp210x: add minimum baud rate for CP2105 SCI
  USB: serial: cp210x: add GPIO support for CP2104
  USB: serial: cp210x: support all gpios on CP2102N QFN28 package

This patch adds Telit ME910 family ECM composition 0x1102.

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

Current GPIO code in cp210x fails to take USB autosuspend into account,
making it practically impossible to use GPIOs with autosuspend enabled
without user configuration. Fix this like for ftdi_sio in a previous patch.
Tested on a CP2102N.

Signed-off-by: Karoly Pados <pados@pados.hu>
Fixes: cf5276ce7867 ("USB: serial: cp210x: Adding GPIO support for CP2105")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

This adds the USB ID of the Hjelmslund Electronics USB485 Iso stick.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

Here is how this device appears in kernel log:

	usb 3-1: new full-speed USB device number 18 using xhci_hcd
	usb 3-1: New USB device found, idVendor=0b00, idProduct=3070
	usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
	usb 3-1: Product: Ingenico 3070
	usb 3-1: Manufacturer: Silicon Labs
	usb 3-1: SerialNumber: 0001

Apparently this is a POS terminal with embedded USB-to-Serial converter.

Cc: stable@vger.kernel.org
Signed-off-by: Ivan Mironov <mironov.ivan@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>

Add minimum baud rate to the cp210x driver.

According to the datasheet for CP2105, the SCI supports 2400 as the
lowest baud rate. As this is not heeded in the current code, an error
message 'failed set req 0x1e size 4 status: -32' when trying to set a
lower baud rate such as 300.
The other cp210x models to date supports a minimum baud rate of 300.

Signed-off-by: Johanna Abrahamsson <johanna.abrahamsson@afconsult.com>
[ johan: simplify min_speed init, move clamp after comment, and drop
         unused serial-data pointer from cp210x_get_actual_rate() ]
Signed-off-by: Johan Hovold <johan@kernel.org>

The CP2104 chips feature 4 controllable GPIO pins, which are similar to
the ones on CP2102N chip (output-only when push-pull, output or
simulated input mode when open-drain).

Add support for the GPIO pins for cp210x driver. The pin get/set routine
is shared with CP2102N, but the pinconf initialization code is not
shared because the acquisition of GPIO configuration in OTP ROM is
similar to CP2105, not CP2102N.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Johan Hovold <johan@kernel.org>

We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The QFN28 package version of the CP2102N has three additional gpio pins.
Add support for these.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Johan Hovold <johan@kernel.org>