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| author | Stephen Warren <swarren@nvidia.com> | 2012-03-01 18:48:33 -0700 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-03-02 16:20:54 +0100 |
| commit | 110e4ec5a1cfe20190e7f8c2b8b4eef369de3c99 (patch) | |
| tree | 2e20b44478f47069ac19f0ef9f5a92bee7576bdd /Documentation | |
| parent | 46919ae63d4820e76724beb655274ce143f0da0b (diff) | |
| download | op-kernel-dev-110e4ec5a1cfe20190e7f8c2b8b4eef369de3c99.zip op-kernel-dev-110e4ec5a1cfe20190e7f8c2b8b4eef369de3c99.tar.gz | |
pinctrl: assume map table entries can't have a NULL name field
pinctrl_register_mappings() already requires that every mapping table
entry have a non-NULL name field.
Logically, this makes sense too; drivers should always request a specific
named state so they know what they're getting. Relying on getting the
first mentioned state in the mapping table is error-prone, and a nasty
special case to implement, given that a given the mapping table may define
multiple states for a device.
Remove a small part of the documentation that talked about optionally
requesting a specific state; it's mandatory now.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/pinctrl.txt | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt index 6fe3232..558aac5 100644 --- a/Documentation/pinctrl.txt +++ b/Documentation/pinctrl.txt @@ -782,16 +782,19 @@ spi on the second function mapping: static const struct pinctrl_map __initdata mapping[] = { { .dev_name = "foo-spi.0", + .name = PINCTRL_STATE_DEFAULT, .ctrl_dev_name = "pinctrl-foo", .function = "spi0", }, { .dev_name = "foo-i2c.0", + .name = PINCTRL_STATE_DEFAULT, .ctrl_dev_name = "pinctrl-foo", .function = "i2c0", }, { .dev_name = "foo-mmc.0", + .name = PINCTRL_STATE_DEFAULT, .ctrl_dev_name = "pinctrl-foo", .function = "mmc0", }, @@ -944,10 +947,6 @@ foo_remove() pinctrl_put(state->p); } -If you want to grab a specific control mapping and not just the first one -found for this device you can specify a specific mapping name, for example in -the above example the second i2c0 setting: pinctrl_get(&device, "spi0-pos-B"); - This get/enable/disable/put sequence can just as well be handled by bus drivers if you don't want each and every driver to handle it and you know the arrangement on your bus. |
