From: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
To: Johannes Berg <johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>,
"David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
Cc: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH RFC 4/6] net: rfkill: gpio: add device tree support
Date: Fri, 17 Jan 2014 14:47:29 +0800 [thread overview]
Message-ID: <1389941251-32692-5-git-send-email-wens@csie.org> (raw)
In-Reply-To: <1389941251-32692-1-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
---
.../devicetree/bindings/rfkill/rfkill-gpio.txt | 26 ++++++++++++++++++++++
net/rfkill/rfkill-gpio.c | 23 +++++++++++++++++++
2 files changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rfkill/rfkill-gpio.txt
diff --git a/Documentation/devicetree/bindings/rfkill/rfkill-gpio.txt b/Documentation/devicetree/bindings/rfkill/rfkill-gpio.txt
new file mode 100644
index 0000000..8a07ea4
--- /dev/null
+++ b/Documentation/devicetree/bindings/rfkill/rfkill-gpio.txt
@@ -0,0 +1,26 @@
+GPIO controlled RFKILL devices
+
+Required properties:
+- compatible : Must be "rfkill-gpio".
+- rfkill-name : Name of RFKILL device
+- rfkill-type : Type of RFKILL device: 1 for WiFi, 2 for BlueTooth
+- NAME_shutdown-gpios : GPIO phandle to shutdown control
+ (phandle must be the second)
+- NAME_reset-gpios : GPIO phandle to reset control
+
+NAME must match the rfkill-name property. NAME_shutdown-gpios or
+NAME_reset-gpios, or both, must be defined.
+
+Optional properties:
+- clocks : phandle to clock to enable/disable
+
+Example:
+
+ rfkill_bt: rfkill@0 {
+ compatible = "rfkill-gpio";
+ rfkill-name = "bluetooth";
+ rfkill-type = <2>;
+ bluetooth_shutdown-gpios = <0>, <&pio 7 18 0>;
+ bluetooth_reset-gpios = <&pio 7 24 0>;
+ clocks = <&clk_out_a>;
+ };
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
index 3084fa3..48381a8 100644
--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -26,6 +26,7 @@
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/gpio/consumer.h>
+#include <linux/of_gpio.h>
#include <linux/rfkill-gpio.h>
@@ -83,6 +84,18 @@ static int rfkill_gpio_acpi_probe(struct device *dev,
return 0;
}
+static int rfkill_gpio_dt_probe(struct device *dev,
+ struct rfkill_gpio_data *rfkill)
+{
+ struct device_node * np = dev->of_node;
+
+ rfkill->name = np->name;
+ of_property_read_string(np, "rfkill-name", &rfkill->name);
+ of_property_read_u32(np, "rfkill-type", &rfkill->type);
+
+ return 0;
+}
+
static int rfkill_gpio_probe(struct platform_device *pdev)
{
struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
@@ -100,6 +113,10 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill);
if (ret)
return ret;
+ } else if (&pdev->dev.of_node) {
+ ret = rfkill_gpio_dt_probe(&pdev->dev, rfkill);
+ if (ret)
+ return ret;
} else if (pdata) {
clk_name = pdata->power_clk_name;
rfkill->name = pdata->name;
@@ -189,6 +206,11 @@ static const struct acpi_device_id rfkill_acpi_match[] = {
{ },
};
+static const struct of_device_id rfkill_of_match[] = {
+ { .compatible = "rfkill-gpio", },
+ {},
+};
+
static struct platform_driver rfkill_gpio_driver = {
.probe = rfkill_gpio_probe,
.remove = rfkill_gpio_remove,
@@ -196,6 +218,7 @@ static struct platform_driver rfkill_gpio_driver = {
.name = "rfkill_gpio",
.owner = THIS_MODULE,
.acpi_match_table = ACPI_PTR(rfkill_acpi_match),
+ .of_match_table = of_match_ptr(rfkill_of_match),
},
};
--
1.8.5.2
next prev parent reply other threads:[~2014-01-17 6:47 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-17 6:47 [PATCH RFC 0/6] net: rfkill: gpio: Add device tree support Chen-Yu Tsai
[not found] ` <1389941251-32692-1-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2014-01-17 6:47 ` [PATCH RFC 1/6] net: rfkill: gpio: fix gpio name buffer size off by 1 Chen-Yu Tsai
2014-01-17 9:46 ` David Laight
[not found] ` <063D6719AE5E284EB5DD2968C1650D6D45EA9D-VkEWCZq2GCInGFn1LkZF6NBPR1lH4CV8@public.gmane.org>
2014-01-17 9:59 ` Chen-Yu Tsai
2014-01-17 6:47 ` [PATCH RFC 2/6] net: rfkill: gpio: use clk_prepare_enable/clk_disable_unprepare Chen-Yu Tsai
2014-01-17 6:47 ` [PATCH RFC 3/6] net: rfkill: gpio: fix reversed clock enable state Chen-Yu Tsai
2014-01-17 6:47 ` Chen-Yu Tsai [this message]
[not found] ` <1389941251-32692-5-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2014-01-17 16:47 ` [PATCH RFC 4/6] net: rfkill: gpio: add device tree support Arnd Bergmann
[not found] ` <201401171747.46332.arnd-r2nGTMty4D4@public.gmane.org>
2014-01-17 17:43 ` Chen-Yu Tsai
[not found] ` <CAGb2v67UKiyfJbKZ_Frk3OwZupMPoA2Ck3Hj2zsRFXBQPztavg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-17 20:13 ` Arnd Bergmann
2014-01-17 23:11 ` Linus Walleij
[not found] ` <CACRpkdZOD4zeA8T5kbJ4c5NsnuzHCg1mw8rRMYNT9c4R-Qnc6A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-18 4:41 ` Chen-Yu Tsai
2014-01-20 8:10 ` Heikki Krogerus
2014-01-21 3:11 ` Alexandre Courbot
[not found] ` <CAAVeFuLP4MkfXGG1FMauvUw_J63zRXdhGwxqYy5W98L1wCQNbw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-21 9:35 ` Linus Walleij
[not found] ` <CACRpkdYiy+sya6NqRfAmsrFOXvaa3qX=qjRuTDW1vZVSaG1+Gg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-21 12:35 ` Arnd Bergmann
[not found] ` <201401211335.16885.arnd-r2nGTMty4D4@public.gmane.org>
2014-01-21 14:53 ` Alexandre Courbot
2014-01-21 15:25 ` Mika Westerberg
[not found] ` <CAAVeFuKFfAvSPYLmvWV5jjT-peZFJ8sJ2bbh4F=JAYoWLhjZpA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-21 18:50 ` Arnd Bergmann
2014-01-22 12:38 ` Mark Brown
2014-01-22 9:54 ` Linus Walleij
2014-01-22 9:58 ` Linus Walleij
[not found] ` <CACRpkdZbb=eO8YRtMn6hW0vn97PkHUo88e_o61DEC8=wPY3_PQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-22 11:00 ` Mika Westerberg
2014-01-27 14:24 ` Maxime Ripard
2014-01-29 4:01 ` Chen-Yu Tsai
2014-01-17 6:47 ` [PATCH RFC 5/6] net: rfkill: gpio: add clock-frequency device tree property Chen-Yu Tsai
2014-01-17 6:47 ` [PATCH RFC 6/6] ARM: sun7i: cubietruck: enable bluetooth module Chen-Yu Tsai
2014-01-17 20:26 ` [PATCH RFC 0/6] net: rfkill: gpio: Add device tree support Johannes Berg
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