lkml.org 
[lkml]   [2018]   [Aug]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 5/8] pinctrl: ingenic: Implement .get_direction for GPIO chips
Date
This allows to read from debugfs whether the GPIOs requested are set as
input or output.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---

Notes:
v2: No change

drivers/pinctrl/pinctrl-ingenic.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c
index 75115733144e..f4aa7d4529e8 100644
--- a/drivers/pinctrl/pinctrl-ingenic.c
+++ b/drivers/pinctrl/pinctrl-ingenic.c
@@ -699,6 +699,21 @@ static inline bool ingenic_get_pin_config(struct ingenic_pinctrl *jzpc,
return val & BIT(idx);
}

+static int ingenic_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+ struct ingenic_gpio_chip *jzgc = gpiochip_get_data(gc);
+ struct ingenic_pinctrl *jzpc = jzgc->jzpc;
+ unsigned int pin = gc->base + offset;
+
+ if (jzpc->version >= ID_JZ4770)
+ return ingenic_get_pin_config(jzpc, pin, JZ4770_GPIO_PAT1);
+
+ if (ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_SELECT))
+ return true;
+
+ return !ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_DIR);
+}
+
static const struct pinctrl_ops ingenic_pctlops = {
.get_groups_count = pinctrl_generic_get_group_count,
.get_group_name = pinctrl_generic_get_group_name,
@@ -1003,6 +1018,7 @@ static int __init ingenic_gpio_probe(struct ingenic_pinctrl *jzpc,
jzgc->gc.get = ingenic_gpio_get;
jzgc->gc.direction_input = ingenic_gpio_direction_input;
jzgc->gc.direction_output = ingenic_gpio_direction_output;
+ jzgc->gc.get_direction = ingenic_gpio_get_direction;

if (of_property_read_bool(node, "gpio-ranges")) {
jzgc->gc.request = gpiochip_generic_request;
--
2.11.0
\
 
 \ /
  Last update: 2018-08-21 18:43    [W:0.058 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site