On Sat, 26 Nov 2016, Antonio Borneo wrote:
> > I am currently running this patch in my local tree.
> > It allows to attach a SMBus device completely on the CP2112, with a simple
> > definition at the end of probe:
> >
> > {
> > struct i2c_client *client;
> > struct i2c_hid_platform_data pdata = {
> > .hid_descriptor_address = 0x20,
> > };
> > struct i2c_board_info synaptics_info = {
> > I2C_BOARD_INFO("hid", 0x2c),
> > .platform_data = &pdata,
> > };
> > int irq = cp2112_allocate_irq(dev, 2);
> >
> > if (irq <= 0) {
> > dev_err(dev->gc.parent, "Failed to translate GPIO to IRQ\n");
> > goto err_sysfs_remove;
> > }
> >
> > synaptics_info.irq = irq;
> > irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW);
> >
> > hid_device_io_start(hdev);
> >
> > /* give time for the device to initialize */
> > msleep(500);
> >
> > client = i2c_new_device(&dev->adap, &synaptics_info);
> > if (!client)
> > hid_err(hdev, "failed allocating Synaptics device\n");
> >
> > }
> >
> > I wonder if we want to consider this upstream, given that the driver is only
> > used for development.
>
> Ciao Benjamin,
>
> for me it makes sense to push it upstream.
> I also coded something similar 2+ years ago, but then my cp2112 got
> broken before I could clean-up and submit the patches.
> As far as I remember, Ellen was using cp2112 in a system in production.
> For sure this driver is not widely used, but definitively it's not for
> development use only.
I've queued this in for-4.10/cp2112. Thanks,
--
Jiri Kosina
SUSE Labs
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