diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-05-25 14:09:31 +0900 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-05-31 10:27:19 +0200 |
| commit | cd8f61f1e52b33766639e28a042d717d1e069d4f (patch) | |
| tree | 801bb36205960e6c26028de592a15a2bd54d36c6 /drivers/pinctrl/core.h | |
| parent | cf9d994dcf00c09c73eb686e239ab6449a248719 (diff) | |
| download | linux-cd8f61f1e52b33766639e28a042d717d1e069d4f.tar.bz2 | |
pinctrl: copy per-pin driver private data to struct pin_desc
Currently, struct pinctrl_pin_desc can have per-pin driver private
data, but it is not copied to struct pin_desc.
For a driver with sparse pin space, for-loop search like below would
be necessary in order to get the driver-specific data for a desired
pin number.
for (i = 0; i < pctldev->desc->npins; i++)
if (pin_number == pctldev->desc->pins[i].number)
return pctldev->desc->pins[i].drv_data;
This is not efficient for a driver with a large number of pins.
So, copy the data to struct pin_desc when each pin is registered
for the faster radix tree lookup.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/core.h')
| -rw-r--r-- | drivers/pinctrl/core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h index ca08723b9ee1..747c423c11f3 100644 --- a/drivers/pinctrl/core.h +++ b/drivers/pinctrl/core.h @@ -134,6 +134,7 @@ struct pinctrl_setting { * @name: a name for the pin, e.g. the name of the pin/pad/finger on a * datasheet or such * @dynamic_name: if the name of this pin was dynamically allocated + * @drv_data: driver-defined per-pin data. pinctrl core does not touch this * @mux_usecount: If zero, the pin is not claimed, and @owner should be NULL. * If non-zero, this pin is claimed by @owner. This field is an integer * rather than a boolean, since pinctrl_get() might process multiple @@ -148,6 +149,7 @@ struct pin_desc { struct pinctrl_dev *pctldev; const char *name; bool dynamic_name; + void *drv_data; /* These fields only added when supporting pinmux drivers */ #ifdef CONFIG_PINMUX unsigned mux_usecount; |