Messages in this thread | | | Date | Fri, 10 Jan 2014 08:59:39 +0100 | From | Jean Delvare <> | Subject | Re: [PATCH 2/2] i2c-designware-pci: Index Haswell ULT bus names from 0 |
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On Thu, 9 Jan 2014 16:12:14 -0800, Benson Leung wrote: > Our devices and our platforms have some other requirements which > turned me away from using i2c_register_board_info. > > i2c_register_board_info looks to create predeclarations for a specific > i2c bus... However, right now, the chromeos_laptop driver is > structured to do explicit declaration (using i2c_new_probed_device) > *after* the busses have come up. > > Specifically, we have a class of atmel_mxt i2c touchpad/touchscreen > devices that may appear at different addresses depending on whether > the touch device is in bootloader mode or operational mode. > > For that reason, the chromeos_laptop driver uses i2c_new_probed_device > with a list of possible addresses when dealing with the atmel touch > device. > > You can see the driver here : > drivers/platform/chrome/chromeos_laptop.c > > Is there some way of getting the "probe" behavior while using > i2c_register_board_info?
No, i2c_register_board_info works only for devices which are always present at a known address.
-- Jean Delvare
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