> -----Original Message----- > From: linux-input-owner@xxxxxxxxxxxxxxx > [mailto:linux-input-owner@xxxxxxxxxxxxxxx] On Behalf Of Benson Leung > Sent: 2014年12月17日 4:25 > To: Jeremiah Mahler; Dudley Du; Dmitry Torokhov; Henrik Rydberg; Benson Leung; > linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > Subject: Re: [PATCH v15 09/12] input: cyapa: add gen5 trackpad device firmware > update function support > > On Tue, Dec 16, 2014 at 5:56 AM, Jeremiah Mahler <jmmahler@xxxxxxxxx> wrote: > > On Mon, Dec 15, 2014 at 02:23:20PM +0800, Dudley Du wrote: > >> Add firmware image update function supported for gen5 trackpad device, > >> it can be used through sysfs update_fw interface. > >> TEST=test on Chromebooks. > >> > >> Signed-off-by: Dudley Du <dudley.dulixin@xxxxxxxxx> > >> --- > >> drivers/input/mouse/Kconfig | 1 + > >> drivers/input/mouse/cyapa_gen5.c | 292 > ++++++++++++++++++++++++++++++++++++++- > >> 2 files changed, 292 insertions(+), 1 deletion(-) > >> > >> diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig > >> index d8b46b0..728490e 100644 > >> --- a/drivers/input/mouse/Kconfig > >> +++ b/drivers/input/mouse/Kconfig > >> @@ -206,6 +206,7 @@ config MOUSE_BCM5974 > >> config MOUSE_CYAPA > >> tristate "Cypress APA I2C Trackpad support" > >> depends on I2C > >> + select CRC_ITU_T > >> help > > > > Just found out that if I2C_DESIGNWARE_PCI isn't enabled the touchpad > > won't work. Verify this on your machines. Then perhaps add a depends > > for I2C_DESIGNWARE_PCI instead of I2C since it would include the former. > > This isn't strictly true on all devices, though. This is true on > DESIGNWARE_PCI based devices like the Acer C720 and the HP Chromebook > 14, but on other platforms that use Cypress trackpads, such as ARM > platforms like the Samsung Chromebook Series 3 DESIGNWARE_PCI is not > required, and will just result in a driver that's never used being > built. > > The specific I2C bus that's being used here shouldn't matter here... > that's more of a platform issue. In the case with Chromebooks, it > might make sense to change drivers/platform/chrome/Kconfig so that > CHROMEOS_LAPTOP depends on I2C_DESIGNWARE_PCI, maybe. > Thank you all for the information. Then I won't change this depending on I2C. > -- > Benson Leung > Software Engineer, Chrome OS > Google Inc. > bleung@xxxxxxxxxx > -- > To unsubscribe from this list: send the line "unsubscribe linux-input" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html This message and any attachments may contain Cypress (or its subsidiaries) confidential information. If it has been received in error, please advise the sender and immediately delete this message. ��.n��������+%������w��{.n�����{��)��^n�r������&��z�ޗ�zf���h���~����������_��+v���)ߣ�
