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| author |   James Hogan <james.hogan@imgtec.com> | 2013-05-24 17:21:12 +0100 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2013-06-16 11:56:50 +0200 |
| commit | a2df4269cad79635201587c5c5404f0b1cb0b05c (patch) | |
| tree | de7f7f4147fb891561970c30aaf054f9ba070043 /drivers/pinctrl/pinconf-generic.c | |
| parent | pinconf-generic: add drive strength to debugfs output (diff) | |
| download | linux-dev-a2df4269cad79635201587c5c5404f0b1cb0b05c.tar.xz linux-dev-a2df4269cad79635201587c5c5404f0b1cb0b05c.zip | |
pinconf-generic: add BIAS_BUS_HOLD pinconf
Add a new PIN_CONFIG_BIAS_BUS_HOLD pin configuration for a bus holder
pin mode (also known as bus keeper, or repeater). This is a weak latch
which drives the last value on a tristate bus. Another device on the bus
can drive the bus high or low before going tristate to change the value
driven by the pin.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinconf-generic.c')
| -rw-r--r-- | drivers/pinctrl/pinconf-generic.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c index 33a5392cf40c..ba465b3e85ef 100644 --- a/drivers/pinctrl/pinconf-generic.c +++ b/drivers/pinctrl/pinconf-generic.c @@ -37,6 +37,7 @@ struct pin_config_item { static struct pin_config_item conf_items[] = { PCONFDUMP(PIN_CONFIG_BIAS_DISABLE, "input bias disabled", NULL), PCONFDUMP(PIN_CONFIG_BIAS_HIGH_IMPEDANCE, "input bias high impedance", NULL), + PCONFDUMP(PIN_CONFIG_BIAS_BUS_HOLD, "input bias bus hold", NULL), PCONFDUMP(PIN_CONFIG_BIAS_PULL_UP, "input bias pull up", NULL), PCONFDUMP(PIN_CONFIG_BIAS_PULL_DOWN, "input bias pull down", NULL), PCONFDUMP(PIN_CONFIG_DRIVE_PUSH_PULL, "output drive push pull", NULL), |