A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 18:51:56 -04:00
Code Issues Projects Releases Packages Wiki Activity

pinctrl: nomadik: assure GPIO chips are populated

Browse source 
If the pin controller probes before the GPIO driver it needs to
populate the GPIO driver state containers ahead of the actual
driver probe as the addresses are used by both halves of the
driver.

Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Linus Walleij 2015-06-17 23:10:21 +02:00
commit ab4a936247
2 changed files with 30 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

25
drivers/pinctrl/nomadik/pinctrl-nomadik.c
View file

@ -2019,6 +2019,31 @@ static int nmk_pinctrl_probe(struct platform_device *pdev)
if (version == PINCTRL_NMK_DB8540)
nmk_pinctrl_db8540_init(&npct->soc);
/*
* Since we depend on the GPIO chips to provide clock and register base
* for the pin control operations, make sure that we have these
* populated before we continue. Follow the phandles to instantiate
* them. The GPIO portion of the actual hardware may be probed before
* or after this point: it shouldn't matter as the APIs are orthogonal.
*/
for (i = 0; i < NMK_MAX_BANKS; i++) {
struct device_node *gpio_np;
struct nmk_gpio_chip *nmk_chip;
gpio_np = of_parse_phandle(np, "nomadik-gpio-chips", i);
if (gpio_np) {
dev_info(&pdev->dev,
"populate NMK GPIO %d \"%s\"\n",
i, gpio_np->name);
nmk_chip = nmk_gpio_populate_chip(gpio_np, pdev);
if (IS_ERR(nmk_chip))
dev_err(&pdev->dev,
"could not populate nmk chip struct "
"- continue anyway\n");
of_node_put(gpio_np);
}
}
prcm_np = of_parse_phandle(np, "prcm", 0);
if (prcm_np)
npct->prcm_base = of_iomap(prcm_np, 0);