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pinctrl: keembay: comment process of building functions a bit

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This should make code a bit easier to follow. While at it use some "for"
loops to simplify array iteration loops.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/r/20211216162206.8027-2-zajec5@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Rafał Miłecki 2021-12-16 17:22:04 +01:00 committed by Linus Walleij
parent 02f1171349
commit 5d0674999c
1 changed files with 11 additions and 10 deletions
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21
drivers/pinctrl/pinctrl-keembay.c
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@ -1617,37 +1617,38 @@ static int keembay_build_functions(struct keembay_pinctrl *kpc)
struct function_desc *keembay_funcs, *new_funcs;
int i;
/* Allocate total number of functions */
/*
* Allocate maximum possible number of functions. Assume every pin
* being part of 8 (hw maximum) globally unique muxes.
*/
kpc->nfuncs = 0;
keembay_funcs = kcalloc(kpc->npins * 8, sizeof(*keembay_funcs), GFP_KERNEL);
if (!keembay_funcs)
return -ENOMEM;
/* Find total number of functions and each's properties */
/* Setup 1 function for each unique mux */
for (i = 0; i < kpc->npins; i++) {
const struct pinctrl_pin_desc *pdesc = keembay_pins + i;
struct keembay_mux_desc *mux = pdesc->drv_data;
struct keembay_mux_desc *mux;
while (mux->name) {
struct function_desc *fdesc = keembay_funcs;
for (mux = pdesc->drv_data; mux->name; mux++) {
struct function_desc *fdesc;
while (fdesc->name) {
/* Check if we already have function for this mux */
for (fdesc = keembay_funcs; fdesc->name; fdesc++) {
if (!strcmp(mux->name, fdesc->name)) {
fdesc->num_group_names++;
break;
}
fdesc++;
}
/* Setup new function for this mux we didn't see before */
if (!fdesc->name) {
fdesc->name = mux->name;
fdesc->num_group_names = 1;
fdesc->data = &mux->mode;
kpc->nfuncs++;
}
mux++;
}
}