ASoC: arizona-jack: convert into a helper library for codec drivers

Convert the arizona extcon driver into a helper library for direct use
from the arizona codec-drivers, rather then being bound to a separate
MFD cell.

Note the probe (and remove) sequence is split into 2 parts:

1. The arizona_jack_codec_dev_probe() function inits a bunch of
jack-detect specific variables in struct arizona_priv and tries to get
a number of resources where getting them may fail with -EPROBE_DEFER.

2. Then once the machine driver has create a snd_sock_jack through
snd_soc_card_jack_new() it calls snd_soc_component_set_jack() on
the codec component, which will call the new arizona_jack_set_jack(),
which sets up jack-detection and requests the IRQs.

This split is necessary, because the IRQ handlers need access to the
arizona->dapm pointer and the snd_sock_jack which are not available
when the codec-driver's probe function runs.

Note this requires that machine-drivers for codecs which are converted
to use the new helper functions from arizona-jack.c are modified to
create a snd_soc_jack through snd_soc_card_jack_new() and register
this jack with the codec through snd_soc_component_set_jack().

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Tested-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210307151807.35201-10-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index edff5c5..a710dfe 100644 (file)
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -43,7 +43,7 @@ snd-soc-ak4642-objs := ak4642.o
 snd-soc-ak4671-objs := ak4671.o
 snd-soc-ak5386-objs := ak5386.o
 snd-soc-ak5558-objs := ak5558.o
-snd-soc-arizona-objs := arizona.o
+snd-soc-arizona-objs := arizona.o arizona-jack.o
 snd-soc-bd28623-objs := bd28623.o
 snd-soc-bt-sco-objs := bt-sco.o
 snd-soc-cpcap-objs := cpcap.o

diff --git a/sound/soc/codecs/arizona-jack.c b/sound/soc/codecs/arizona-jack.c
index a6e8071..e121490 100644 (file)
--- a/sound/soc/codecs/arizona-jack.c
+++ b/sound/soc/codecs/arizona-jack.c
@@ -7,14 +7,12 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/i2c.h>
 #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>
 #include <linux/pm_runtime.h>
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>
@@ -1337,27 +1335,16 @@ static int arizona_extcon_device_get_pdata(struct device *dev,
        return 0;
 }
 
-static int arizona_extcon_probe(struct platform_device *pdev)
+int arizona_jack_codec_dev_probe(struct arizona_priv *info, struct device *dev)
 {
-       struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
+       struct arizona *arizona = info->arizona;
        struct arizona_pdata *pdata = &arizona->pdata;
-       struct arizona_priv *info;
-       unsigned int val;
-       unsigned int clamp_mode;
-       int jack_irq_fall, jack_irq_rise;
-       int ret, mode, i, j;
-
-       if (!arizona->dapm || !arizona->dapm->card)
-               return -EPROBE_DEFER;
-
-       info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
-       if (!info)
-               return -ENOMEM;
+       int ret, mode;
 
        if (!dev_get_platdata(arizona->dev))
-               arizona_extcon_device_get_pdata(&pdev->dev, arizona);
+               arizona_extcon_device_get_pdata(dev, arizona);
 
-       info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
+       info->micvdd = devm_regulator_get(dev, "MICVDD");
        if (IS_ERR(info->micvdd)) {
                ret = PTR_ERR(info->micvdd);
                dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
@@ -1365,12 +1352,10 @@ static int arizona_extcon_probe(struct platform_device *pdev)
        }
 
        mutex_init(&info->lock);
-       info->arizona = arizona;
        info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
        INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
        INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
        INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
-       platform_set_drvdata(pdev, info);
 
        switch (arizona->type) {
        case WM5102:
@@ -1404,20 +1389,20 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                break;
        }
 
-       info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
+       info->edev = devm_extcon_dev_allocate(dev, arizona_cable);
        if (IS_ERR(info->edev)) {
-               dev_err(&pdev->dev, "failed to allocate extcon device\n");
+               dev_err(arizona->dev, "failed to allocate extcon device\n");
                return -ENOMEM;
        }
 
-       ret = devm_extcon_dev_register(&pdev->dev, info->edev);
+       ret = devm_extcon_dev_register(dev, info->edev);
        if (ret < 0) {
                dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
                        ret);
                return ret;
        }
 
-       info->input = devm_input_allocate_device(&pdev->dev);
+       info->input = devm_input_allocate_device(dev);
        if (!info->input) {
                dev_err(arizona->dev, "Can't allocate input dev\n");
                ret = -ENOMEM;
@@ -1448,7 +1433,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                else
                        mode = GPIOF_OUT_INIT_LOW;
 
-               ret = devm_gpio_request_one(&pdev->dev, pdata->micd_pol_gpio,
+               ret = devm_gpio_request_one(dev, pdata->micd_pol_gpio,
                                            mode, "MICD polarity");
                if (ret != 0) {
                        dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
@@ -1481,17 +1466,38 @@ static int arizona_extcon_probe(struct platform_device *pdev)
        }
 
        if (arizona->pdata.hpdet_id_gpio > 0) {
-               ret = devm_gpio_request_one(&pdev->dev,
-                                           arizona->pdata.hpdet_id_gpio,
+               ret = devm_gpio_request_one(dev, arizona->pdata.hpdet_id_gpio,
                                            GPIOF_OUT_INIT_LOW,
                                            "HPDET");
                if (ret != 0) {
                        dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
                                arizona->pdata.hpdet_id_gpio, ret);
-                       goto err_gpio;
+                       gpiod_put(info->micd_pol_gpio);
+                       return ret;
                }
        }
 
+       return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_jack_codec_dev_probe);
+
+int arizona_jack_codec_dev_remove(struct arizona_priv *info)
+{
+       gpiod_put(info->micd_pol_gpio);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_jack_codec_dev_remove);
+
+static int arizona_jack_enable_jack_detect(struct arizona_priv *info,
+                                          struct snd_soc_jack *jack)
+{
+       struct arizona *arizona = info->arizona;
+       struct arizona_pdata *pdata = &arizona->pdata;
+       unsigned int val;
+       unsigned int clamp_mode;
+       int jack_irq_fall, jack_irq_rise;
+       int ret, i, j;
+
        if (arizona->pdata.micd_bias_start_time)
                regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
                                   ARIZONA_MICD_BIAS_STARTTIME_MASK,
@@ -1532,16 +1538,15 @@ static int arizona_extcon_probe(struct platform_device *pdev)
        if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
                dev_err(arizona->dev, "Too many MICD ranges: %d\n",
                        arizona->pdata.num_micd_ranges);
+               return -EINVAL;
        }
 
        if (info->num_micd_ranges > 1) {
                for (i = 1; i < info->num_micd_ranges; i++) {
                        if (info->micd_ranges[i - 1].max >
                            info->micd_ranges[i].max) {
-                               dev_err(arizona->dev,
-                                       "MICD ranges must be sorted\n");
-                               ret = -EINVAL;
-                               goto err_gpio;
+                               dev_err(arizona->dev, "MICD ranges must be sorted\n");
+                               return -EINVAL;
                        }
                }
        }
@@ -1559,8 +1564,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) {
                        dev_err(arizona->dev, "Unsupported MICD level %d\n",
                                info->micd_ranges[i].max);
-                       ret = -EINVAL;
-                       goto err_gpio;
+                       return -EINVAL;
                }
 
                dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
@@ -1629,43 +1633,40 @@ static int arizona_extcon_probe(struct platform_device *pdev)
        ret = arizona_request_irq(arizona, jack_irq_rise,
                                  "JACKDET rise", arizona_jackdet, info);
        if (ret != 0) {
-               dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
-                       ret);
+               dev_err(arizona->dev, "Failed to get JACKDET rise IRQ: %d\n", ret);
                goto err_pm;
        }
 
        ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
        if (ret != 0) {
-               dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
-                       ret);
+               dev_err(arizona->dev, "Failed to set JD rise IRQ wake: %d\n", ret);
                goto err_rise;
        }
 
        ret = arizona_request_irq(arizona, jack_irq_fall,
                                  "JACKDET fall", arizona_jackdet, info);
        if (ret != 0) {
-               dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
+               dev_err(arizona->dev, "Failed to get JD fall IRQ: %d\n", ret);
                goto err_rise_wake;
        }
 
        ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
        if (ret != 0) {
-               dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
-                       ret);
+               dev_err(arizona->dev, "Failed to set JD fall IRQ wake: %d\n", ret);
                goto err_fall;
        }
 
        ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
                                  "MICDET", arizona_micdet, info);
        if (ret != 0) {
-               dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
+               dev_err(arizona->dev, "Failed to get MICDET IRQ: %d\n", ret);
                goto err_fall_wake;
        }
 
        ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
                                  "HPDET", arizona_hpdet_irq, info);
        if (ret != 0) {
-               dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
+               dev_err(arizona->dev, "Failed to get HPDET IRQ: %d\n", ret);
                goto err_micdet;
        }
 
@@ -1677,12 +1678,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
 
        ret = regulator_allow_bypass(info->micvdd, true);
        if (ret != 0)
-               dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
-                        ret);
+               dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n", ret);
 
        ret = input_register_device(info->input);
        if (ret) {
-               dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
+               dev_err(arizona->dev, "Can't register input device: %d\n", ret);
                goto err_hpdet;
        }
 
@@ -1704,14 +1704,11 @@ err_rise:
        arizona_free_irq(arizona, jack_irq_rise, info);
 err_pm:
        pm_runtime_put(arizona->dev);
-err_gpio:
-       gpiod_put(info->micd_pol_gpio);
        return ret;
 }
 
-static int arizona_extcon_remove(struct platform_device *pdev)
+static int arizona_jack_disable_jack_detect(struct arizona_priv *info)
 {
-       struct arizona_priv *info = platform_get_drvdata(pdev);
        struct arizona *arizona = info->arizona;
        int jack_irq_rise, jack_irq_fall;
        bool change;
@@ -1739,8 +1736,7 @@ static int arizona_extcon_remove(struct platform_device *pdev)
                                       ARIZONA_MICD_ENA, 0,
                                       &change);
        if (ret < 0) {
-               dev_err(&pdev->dev, "Failed to disable micd on remove: %d\n",
-                       ret);
+               dev_err(arizona->dev, "Failed to disable micd on remove: %d\n", ret);
        } else if (change) {
                regulator_disable(info->micvdd);
                pm_runtime_put(arizona->dev);
@@ -1753,22 +1749,17 @@ static int arizona_extcon_remove(struct platform_device *pdev)
                           ARIZONA_JD1_ENA, 0);
        arizona_clk32k_disable(arizona);
 
-       gpiod_put(info->micd_pol_gpio);
-
        return 0;
 }
 
-static struct platform_driver arizona_extcon_driver = {
-       .driver         = {
-               .name   = "arizona-extcon",
-       },
-       .probe          = arizona_extcon_probe,
-       .remove         = arizona_extcon_remove,
-};
-
-module_platform_driver(arizona_extcon_driver);
+int arizona_jack_set_jack(struct snd_soc_component *component,
+                         struct snd_soc_jack *jack, void *data)
+{
+       struct arizona_priv *info = snd_soc_component_get_drvdata(component);
 
-MODULE_DESCRIPTION("Arizona Extcon driver");
-MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:extcon-arizona");
+       if (jack)
+               return arizona_jack_enable_jack_detect(info, jack);
+       else
+               return arizona_jack_disable_jack_detect(info);
+}
+EXPORT_SYMBOL_GPL(arizona_jack_set_jack);

diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h
index afc34e1..f020124 100644 (file)
--- a/sound/soc/codecs/arizona.h
+++ b/sound/soc/codecs/arizona.h
@@ -386,4 +386,10 @@ static inline int arizona_unregister_notifier(struct snd_soc_component *componen
 
 int arizona_of_get_audio_pdata(struct arizona *arizona);
 
+int arizona_jack_codec_dev_probe(struct arizona_priv *info, struct device *dev);
+int arizona_jack_codec_dev_remove(struct arizona_priv *info);
+
+int arizona_jack_set_jack(struct snd_soc_component *component,
+                         struct snd_soc_jack *jack, void *data);
+
 #endif