extcon: Add support irq domain for MAX8997 muic

This patch add support irq domain for Maxim MAX8997 muic
instead of irq_base in platform data and max8997 driver
private data are instead. It is tested on TRATS board.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 19 insertions, 12 deletions

diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index 29c5cf852efc..bf6b2eae5751 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -23,7 +23,7 @@ config EXTCON_GPIO
 
 config EXTCON_MAX8997
         tristate "MAX8997 EXTCON Support"
-        depends on MFD_MAX8997
+        depends on MFD_MAX8997 && IRQ_DOMAIN
         help
           If you say yes here you get support for the MUIC device of
           Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index a4ed30bd9a41..ef9090a4271d 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -26,6 +26,7 @@
 #include <linux/mfd/max8997.h>
 #include <linux/mfd/max8997-private.h>
 #include <linux/extcon.h>
+#include <linux/irqdomain.h>
 
 #define DEV_NAME                        "max8997-muic"
 
@@ -77,6 +78,7 @@
 struct max8997_muic_irq {
         unsigned int irq;
         const char *name;
+        unsigned int virq;
 };
 
 static struct max8997_muic_irq muic_irqs[] = {
@@ -343,12 +345,10 @@ static void max8997_muic_irq_work(struct work_struct *work)
 {
         struct max8997_muic_info *info = container_of(work,
                         struct max8997_muic_info, irq_work);
-        struct max8997_dev *max8997 = i2c_get_clientdata(info->muic);
         u8 status[2];
         u8 adc, chg_type;
-
-        int irq_type = info->irq - max8997->irq_base;
-        int ret;
+        int irq_type = 0;
+        int i, ret;
 
         mutex_lock(&info->mutex);
 
@@ -363,6 +363,10 @@ static void max8997_muic_irq_work(struct work_struct *work)
         dev_dbg(info->dev, "%s: STATUS1:0x%x, 2:0x%x\n", __func__,
                         status[0], status[1]);
 
+        for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++)
+                if (info->irq == muic_irqs[i].virq)
+                        irq_type = muic_irqs[i].irq;
+
         switch (irq_type) {
         case MAX8997_MUICIRQ_ADC:
                 adc = status[0] & STATUS1_ADC_MASK;
@@ -448,11 +452,15 @@ static int __devinit max8997_muic_probe(struct platform_device *pdev)
 
         for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
                 struct max8997_muic_irq *muic_irq = &muic_irqs[i];
+                int virq = 0;
+
+                virq = irq_create_mapping(max8997->irq_domain, muic_irq->irq);
+                if (!virq)
+                        goto err_irq;
+                muic_irq->virq = virq;
 
-                ret = request_threaded_irq(pdata->irq_base + muic_irq->irq,
-                                NULL, max8997_muic_irq_handler,
-                                0, muic_irq->name,
-                                info);
+                ret = request_threaded_irq(virq, NULL,max8997_muic_irq_handler,
+                                0, muic_irq->name, info);
                 if (ret) {
                         dev_err(&pdev->dev,
                                 "failed: irq request (IRQ: %d,"
@@ -496,7 +504,7 @@ err_extcon:
         kfree(info->edev);
 err_irq:
         while (--i >= 0)
-                free_irq(pdata->irq_base + muic_irqs[i].irq, info);
+                free_irq(muic_irqs[i].virq, info);
         kfree(info);
 err_kfree:
         return ret;
@@ -505,11 +513,10 @@ err_kfree:
 static int __devexit max8997_muic_remove(struct platform_device *pdev)
 {
         struct max8997_muic_info *info = platform_get_drvdata(pdev);
-        struct max8997_dev *max8997 = i2c_get_clientdata(info->muic);
         int i;
 
         for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
-                free_irq(max8997->irq_base + muic_irqs[i].irq, info);
+                free_irq(muic_irqs[i].virq, info);
         cancel_work_sync(&info->irq_work);
 
         extcon_dev_unregister(info->edev);