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Message-Id: <20180212085314.23014-2-linus.walleij@linaro.org>
Date: Mon, 12 Feb 2018 09:53:13 +0100
From: Linus Walleij <linus.walleij@...aro.org>
To: MyungJoo Ham <myungjoo.ham@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>
Cc: linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
Mike Lockwood <lockwood@...gle.com>,
Guenter Roeck <linux@...ck-us.net>,
Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 2/3] extcon: gpio: Move platform data into state container
This moves the platform data settings from the platform data
struct and into the state container, saving some unnecessary
references and simplifying things a bit.
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
drivers/extcon/extcon-gpio.c | 56 ++++++++++++++++++++------------------------
1 file changed, 26 insertions(+), 30 deletions(-)
diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 5f88f36cc54e..1d180f717fdf 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -29,7 +29,13 @@
#include <linux/workqueue.h>
/**
- * struct gpio_extcon_pdata - A simple GPIO-controlled extcon device.
+ * struct gpio_extcon_data - A simple GPIO-controlled extcon device state container.
+ * @edev: Extcon device.
+ * @irq: Interrupt line for the external connector.
+ * @work: Work fired by the interrupt.
+ * @debounce_jiffies: Number of jiffies to wait for the GPIO to stabilize, from the debounce
+ * value.
+ * @id_gpiod: GPIO descriptor for this external connector.
* @extcon_id: The unique id of specific external connector.
* @gpio: Corresponding GPIO.
* @gpio_active_low: Boolean describing whether gpio active state is 1 or 0
@@ -40,23 +46,18 @@
* @check_on_resume: Boolean describing whether to check the state of gpio
* while resuming from sleep.
*/
-struct gpio_extcon_pdata {
- unsigned int extcon_id;
- unsigned gpio;
- bool gpio_active_low;
- unsigned long debounce;
- unsigned long irq_flags;
- bool check_on_resume;
-};
-
struct gpio_extcon_data {
struct extcon_dev *edev;
int irq;
struct delayed_work work;
unsigned long debounce_jiffies;
-
struct gpio_desc *id_gpiod;
- struct gpio_extcon_pdata *pdata;
+ unsigned int extcon_id;
+ unsigned gpio;
+ bool gpio_active_low;
+ unsigned long debounce;
+ unsigned long irq_flags;
+ bool check_on_resume;
};
static void gpio_extcon_work(struct work_struct *work)
@@ -67,10 +68,10 @@ static void gpio_extcon_work(struct work_struct *work)
work);
state = gpiod_get_value_cansleep(data->id_gpiod);
- if (data->pdata->gpio_active_low)
+ if (data->gpio_active_low)
state = !state;
- extcon_set_state_sync(data->edev, data->pdata->extcon_id, state);
+ extcon_set_state_sync(data->edev, data->extcon_id, state);
}
static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
@@ -84,24 +85,23 @@ static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
static int gpio_extcon_init(struct device *dev, struct gpio_extcon_data *data)
{
- struct gpio_extcon_pdata *pdata = data->pdata;
int ret;
- ret = devm_gpio_request_one(dev, pdata->gpio, GPIOF_DIR_IN,
+ ret = devm_gpio_request_one(dev, data->gpio, GPIOF_DIR_IN,
dev_name(dev));
if (ret < 0)
return ret;
- data->id_gpiod = gpio_to_desc(pdata->gpio);
+ data->id_gpiod = gpio_to_desc(data->gpio);
if (!data->id_gpiod)
return -EINVAL;
- if (pdata->debounce) {
+ if (data->debounce) {
ret = gpiod_set_debounce(data->id_gpiod,
- pdata->debounce * 1000);
+ data->debounce * 1000);
if (ret < 0)
data->debounce_jiffies =
- msecs_to_jiffies(pdata->debounce);
+ msecs_to_jiffies(data->debounce);
}
data->irq = gpiod_to_irq(data->id_gpiod);
@@ -113,20 +113,16 @@ static int gpio_extcon_init(struct device *dev, struct gpio_extcon_data *data)
static int gpio_extcon_probe(struct platform_device *pdev)
{
- struct gpio_extcon_pdata *pdata = dev_get_platdata(&pdev->dev);
struct gpio_extcon_data *data;
int ret;
- if (!pdata)
- return -EBUSY;
- if (!pdata->irq_flags || pdata->extcon_id > EXTCON_NONE)
- return -EINVAL;
-
data = devm_kzalloc(&pdev->dev, sizeof(struct gpio_extcon_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
- data->pdata = pdata;
+
+ if (!data->irq_flags || data->extcon_id > EXTCON_NONE)
+ return -EINVAL;
/* Initialize the gpio */
ret = gpio_extcon_init(&pdev->dev, data);
@@ -134,7 +130,7 @@ static int gpio_extcon_probe(struct platform_device *pdev)
return ret;
/* Allocate the memory of extcon devie and register extcon device */
- data->edev = devm_extcon_dev_allocate(&pdev->dev, &pdata->extcon_id);
+ data->edev = devm_extcon_dev_allocate(&pdev->dev, &data->extcon_id);
if (IS_ERR(data->edev)) {
dev_err(&pdev->dev, "failed to allocate extcon device\n");
return -ENOMEM;
@@ -151,7 +147,7 @@ static int gpio_extcon_probe(struct platform_device *pdev)
* is attached or detached.
*/
ret = devm_request_any_context_irq(&pdev->dev, data->irq,
- gpio_irq_handler, pdata->irq_flags,
+ gpio_irq_handler, data->irq_flags,
pdev->name, data);
if (ret < 0)
return ret;
@@ -178,7 +174,7 @@ static int gpio_extcon_resume(struct device *dev)
struct gpio_extcon_data *data;
data = dev_get_drvdata(dev);
- if (data->pdata->check_on_resume)
+ if (data->check_on_resume)
queue_delayed_work(system_power_efficient_wq,
&data->work, data->debounce_jiffies);
--
2.14.3
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