Hi,
On Tuesday 27 August 2013 01:44 PM, Tomasz Figa wrote:
Hi Laurent,
On Tuesday 27 of August 2013 10:02:39 Laurent Pinchart wrote:
Add DT bindings for the pcf857x-compatible chips and parse the device
tree node in the driver.
Signed-off-by: Laurent Pinchart
<laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> ---
.../devicetree/bindings/gpio/gpio-pcf857x.txt | 71
++++++++++++++++++++++ drivers/gpio/gpio-pcf857x.c
| 44 +++++++++++--- 2 files changed, 107 insertions(+), 8
deletions(-)
create mode 100644
Documentation/devicetree/bindings/gpio/gpio-pcf857x.txt
Changes since v4:
- Don't try to get ngpio from of_device_id data, we already get it from
i2c_device_id
Hmm, I'm not sure how this is supposed to work.
How does the I2C core resolve OF compatible name to particular entry in
id_table? I believe it simply passes NULL as the second argument of
.probe() if the device is instantiated based on OF compatible string and
not one in the legacy ID table.
It doesn't pass the second argument as NULL. If you look at
i2c_device_probe() in drivers/i2c/i2c-core.c, the second argument to
probe is passed as: i2c_match_id(driver->id_table, client)
This will extract the i2c_device_id pointer from the id_table.
Archit
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