extcon: arizona: Use gpiod inteface to handle micd_pol_gpio gpio

Convert to using the newer gpiod interface for the micd_pol_gpio.
Although we still carry support for the old gpio interface from pdata.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
[cw00.choi: Modify the patch titlei to include the detailed content]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 7af42cb..4dd684a 100644 (file)
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -20,6 +20,7 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/err.h>
+#include <linux/gpio/consumer.h>
 #include <linux/gpio.h>
 #include <linux/input.h>
 #include <linux/platform_device.h>
@@ -95,6 +96,8 @@ struct arizona_extcon_info {
        int hpdet_ip_version;
 
        struct extcon_dev *edev;
+
+       struct gpio_desc *micd_pol_gpio;
 };
 
 static const struct arizona_micd_config micd_default_modes[] = {
@@ -205,6 +208,10 @@ static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
        if (arizona->pdata.micd_pol_gpio > 0)
                gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
                                        info->micd_modes[mode].gpio);
+       else
+               gpiod_set_value_cansleep(info->micd_pol_gpio,
+                                        info->micd_modes[mode].gpio);
+
        regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
                           ARIZONA_MICD_BIAS_SRC_MASK,
                           info->micd_modes[mode].bias <<
@@ -1258,6 +1265,27 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                                arizona->pdata.micd_pol_gpio, ret);
                        goto err_register;
                }
+       } else {
+               if (info->micd_modes[0].gpio)
+                       mode = GPIOD_OUT_HIGH;
+               else
+                       mode = GPIOD_OUT_LOW;
+
+               /* We can't use devm here because we need to do the get
+                * against the MFD device, as that is where the of_node
+                * will reside, but if we devm against that the GPIO
+                * will not be freed if the extcon driver is unloaded.
+                */
+               info->micd_pol_gpio = gpiod_get_optional(arizona->dev,
+                                                        "wlf,micd-pol",
+                                                        GPIOD_OUT_LOW);
+               if (IS_ERR(info->micd_pol_gpio)) {
+                       ret = PTR_ERR(info->micd_pol_gpio);
+                       dev_err(arizona->dev,
+                               "Failed to get microphone polarity GPIO: %d\n",
+                               ret);
+                       goto err_register;
+               }
        }
 
        if (arizona->pdata.hpdet_id_gpio > 0) {
@@ -1268,7 +1296,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                if (ret != 0) {
                        dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
                                arizona->pdata.hpdet_id_gpio, ret);
-                       goto err_register;
+                       goto err_gpio;
                }
        }
 
@@ -1312,7 +1340,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                                dev_err(arizona->dev,
                                        "MICD ranges must be sorted\n");
                                ret = -EINVAL;
-                               goto err_input;
+                               goto err_gpio;
                        }
                }
        }
@@ -1331,7 +1359,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                        dev_err(arizona->dev, "Unsupported MICD level %d\n",
                                info->micd_ranges[i].max);
                        ret = -EINVAL;
-                       goto err_input;
+                       goto err_gpio;
                }
 
                dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
@@ -1404,7 +1432,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
        if (ret != 0) {
                dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
                        ret);
-               goto err_input;
+               goto err_gpio;
        }
 
        ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
@@ -1475,7 +1503,8 @@ err_rise_wake:
        arizona_set_irq_wake(arizona, jack_irq_rise, 0);
 err_rise:
        arizona_free_irq(arizona, jack_irq_rise, info);
-err_input:
+err_gpio:
+       gpiod_put(info->micd_pol_gpio);
 err_register:
        pm_runtime_disable(&pdev->dev);
        return ret;
@@ -1487,6 +1516,8 @@ static int arizona_extcon_remove(struct platform_device *pdev)
        struct arizona *arizona = info->arizona;
        int jack_irq_rise, jack_irq_fall;
 
+       gpiod_put(info->micd_pol_gpio);
+
        pm_runtime_disable(&pdev->dev);
 
        regmap_update_bits(arizona->regmap,