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powerpc/sysdev: change CPM GPIO to platform_device

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Since commit 9427ecbed4 ("gpio: Rework of_gpiochip_set_names()
to use device property accessors"), gpio chips have to have a
parent, otherwise devprop_gpiochip_set_names() prematurely exists
with message "GPIO chip parent is NULL" and doesn't proceed
'gpio-line-names' DT property.

This patch wraps the CPM GPIO into a platform driver to allow
assignment of the parent device.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Christophe Leroy 2017-12-13 12:26:23 +01:00 • committed by Scott Wood
parent d038386a0c
commit c095ff93f9
7 changed files with 97 additions and 39 deletions
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5
arch/powerpc/sysdev/cpm_common.c
View file

@ -190,8 +190,9 @@ static int cpm2_gpio32_dir_in(struct gpio_chip *gc, unsigned int gpio)
return 0;
}
int cpm2_gpiochip_add32(struct device_node *np)
int cpm2_gpiochip_add32(struct device *dev)
{
struct device_node *np = dev->of_node;
struct cpm2_gpio32_chip *cpm2_gc;
struct of_mm_gpio_chip *mm_gc;
struct gpio_chip *gc;
@ -211,6 +212,8 @@ int cpm2_gpiochip_add32(struct device_node *np)
gc->direction_output = cpm2_gpio32_dir_out;
gc->get = cpm2_gpio32_get;
gc->set = cpm2_gpio32_set;
gc->parent = dev;
gc->owner = THIS_MODULE;
return of_mm_gpiochip_add_data(np, mm_gc, cpm2_gc);
}