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Subject[PATCH v4 09/13] ASoC: arizona-jack: convert into a helper library for codec drivers
Date
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>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v3:
- Pass dev (the codec-device) to devm_regulator_get instead of
passing arizona->dev. This is necessary so that the regulator gets
properly released when the coded driver unbinds.
---
sound/soc/codecs/Makefile | 2 +-
sound/soc/codecs/arizona-jack.c | 125 +++++++++++++++-----------------
sound/soc/codecs/arizona.h | 6 ++
3 files changed, 65 insertions(+), 68 deletions(-)

diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index d277f0366e09..2e976cfaa862 100644
--- 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 a6e8071f84ab..e121490eb379 100644
--- 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 @@ static int arizona_extcon_probe(struct platform_device *pdev)
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 7132dbc3c840..fc515845a3e6 100644
--- 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
--
2.29.2
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