From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chanwoo Choi Subject: Re: [RESEND PATCH 2/2] extcon: gpio: Add support for using cable names Date: Wed, 12 Nov 2014 10:12:51 +0900 Message-ID: <5462B413.2090502@samsung.com> References: <1415201388-32060-1-git-send-email-george.cherian@ti.com> <1415201388-32060-3-git-send-email-george.cherian@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-reply-to: <1415201388-32060-3-git-send-email-george.cherian@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: George Cherian Cc: myungjoo.ham@samsung.com, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, rongjun.ying@csr.com, Baohua.Song@csr.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org List-Id: devicetree@vger.kernel.org Hi George, On 11/06/2014 12:29 AM, George Cherian wrote: > Add support for using cable names. Enables other drivers to register interest > and get notified using extcon provided notifier call backs. > > Signed-off-by: George Cherian > --- > Documentation/devicetree/bindings/extcon/extcon-gpio.txt | 2 ++ > drivers/extcon/extcon-gpio.c | 4 ++++ > 2 files changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/extcon/extcon-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-gpio.txt > index 30aa2e1..2c9d29f 100644 > --- a/Documentation/devicetree/bindings/extcon/extcon-gpio.txt > +++ b/Documentation/devicetree/bindings/extcon/extcon-gpio.txt > @@ -7,6 +7,7 @@ Required Properties: > - compatible: should be: > * "linux,extcon-gpio" > - gpios: specifies the gpio pin used. > + - cable-name: Name of the cable used. > > Optional Properties: > - debounce: Debounce time for GPIO IRQ in ms > @@ -18,4 +19,5 @@ Eg: > compatible = "linux,extcon-gpio"; > gpios = <&gpio3 12 GPIO_ACTIVE_HIGH>; > debounce = <20>; > + cable-name = "USB-HOST"; > }; > diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c > index 85795de..0e1b3e8 100644 > --- a/drivers/extcon/extcon-gpio.c > +++ b/drivers/extcon/extcon-gpio.c > @@ -38,6 +38,7 @@ struct gpio_extcon_data { > int irq; > struct delayed_work work; > unsigned long debounce_jiffies; > + const char *cable_name[1]; *cable_name[1] -> **cable_name > }; > > static void gpio_extcon_work(struct work_struct *work) > @@ -100,6 +101,9 @@ static int gpio_extcon_probe(struct platform_device *pdev) > msecs_to_jiffies(debounce); > } > > + of_property_read_string_index(np, "cable-name", 0, > + extcon_data->cable_name); > + extcon_data->edev->supported_cable = extcon_data->cable_name; It is wrong. I don't want to allocate ables to supported_cable directly. For consistency of extcon driver, you have to add the array of supported cables by using devm_extcon_dev_allocate(). Thanks, Chanwoo Choi > ret = devm_extcon_dev_register(&pdev->dev, extcon_data->edev); > if (ret < 0) > return ret; >