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gpio: discourage passing base to gpio_chip
Passing a fixed base in struct gpio_chip is done for legacy systems that cannot handle dynamic allocation. Discourage this behaviour in the kerneldoc. Acked-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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1 changed files with 6 additions and 2 deletions
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@ -42,8 +42,12 @@ struct seq_file;
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* @dbg_show: optional routine to show contents in debugfs; default code
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* will be used when this is omitted, but custom code can show extra
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* state (such as pullup/pulldown configuration).
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* @base: identifies the first GPIO number handled by this chip; or, if
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* negative during registration, requests dynamic ID allocation.
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* @base: identifies the first GPIO number handled by this chip;
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* or, if negative during registration, requests dynamic ID allocation.
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* DEPRECATION: providing anything non-negative and nailing the base
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* base offset of GPIO chips is deprecated. Please pass -1 as base to
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* let gpiolib select the chip base in all possible cases. We want to
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* get rid of the static GPIO number space in the long run.
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* @ngpio: the number of GPIOs handled by this controller; the last GPIO
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* handled is (base + ngpio - 1).
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* @desc: array of ngpio descriptors. Private.
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