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Commit 297620fd authored by Chanwoo Choi's avatar Chanwoo Choi
Browse files

extcon: max77693: Check the state/type of cable after boot completed 



This patch check the state/type of cable after completing the initialization
of platform and notify platform of cable state/type through extcon. If extcon
provider driver notify the state/type of cable before completing platform boot,
this uevent is unused and ignored.

Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarMyungjoo Ham <myungjoo.ham@samsung.com>
parent 39bf369e

drivers/extcon/extcon-max77693.c

+34 −3
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <linux/irqdomain.h>



#define	DEV_NAME			"max77693-muic"

#define	DELAY_MS_DEFAULT		20000		/* unit: millisecond */



enum max77693_muic_adc_debounce_time {

	ADC_DEBOUNCE_TIME_5MS = 0,
@@ -52,6 +53,14 @@ struct max77693_muic_info { 
	struct work_struct irq_work;

	struct mutex mutex;



	/*

	 * Use delayed workqueue to detect cable state and then

	 * notify cable state to notifiee/platform through uevent.

	 * After completing the booting of platform, the extcon provider

	 * driver should notify cable state to upper layer.

	 */

	struct delayed_work wq_detcable;



	/* Button of dock device */

	struct input_dev *dock;

};
@@ -912,13 +921,23 @@ static int max77693_muic_detect_accessory(struct max77693_muic_info *info) 
	return ret;

}



static void max77693_muic_detect_cable_wq(struct work_struct *work)

{

	struct max77693_muic_info *info = container_of(to_delayed_work(work),

				struct max77693_muic_info, wq_detcable);



	max77693_muic_detect_accessory(info);

}



static int max77693_muic_probe(struct platform_device *pdev)

{

	struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);

	struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev);

	struct max77693_muic_platform_data *muic_pdata = pdata->muic_data;

	struct max77693_muic_info *info;

	int ret, i;

	int delay_jiffies;

	int ret;

	int i;

	u8 id;



	info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info),
@@ -1051,8 +1070,20 @@ static int max77693_muic_probe(struct platform_device *pdev) 
	/* Set ADC debounce time */

	max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);



	/* Detect accessory on boot */

	max77693_muic_detect_accessory(info);

	/*

	 * Detect accessory after completing the initialization of platform

	 *

	 * - Use delayed workqueue to detect cable state and then

	 * notify cable state to notifiee/platform through uevent.

	 * After completing the booting of platform, the extcon provider

	 * driver should notify cable state to upper layer.

	 */

	INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq);

	if (muic_pdata->detcable_delay_ms)

		delay_jiffies = msecs_to_jiffies(muic_pdata->detcable_delay_ms);

	else

		delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);

	schedule_delayed_work(&info->wq_detcable, delay_jiffies);



	return ret;

include/linux/mfd/max77693.h

+2 −0
Original line number Diff line number Diff line
@@ -38,6 +38,8 @@ struct max77693_reg_data { 
struct max77693_muic_platform_data {

	struct max77693_reg_data *init_data;

	int num_init_data;



	int detcable_delay_ms;

};



struct max77693_platform_data {