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-rw-r--r--drivers/extcon/Kconfig42
-rw-r--r--drivers/extcon/Makefile7
-rw-r--r--drivers/extcon/extcon-adc-jack.c48
-rw-r--r--drivers/extcon/extcon-arizona.c106
-rw-r--r--drivers/extcon/extcon-class.c153
-rw-r--r--drivers/extcon/extcon-gpio.c36
-rw-r--r--drivers/extcon/extcon-max14577.c204
-rw-r--r--drivers/extcon/extcon-max77693.c64
-rw-r--r--drivers/extcon/extcon-max8997.c21
-rw-r--r--drivers/extcon/extcon-palmas.c42
-rw-r--r--drivers/extcon/extcon-sm5502.c724
11 files changed, 1202 insertions, 245 deletions
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index be56e8ac95e..6f2f4727de2 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -14,6 +14,20 @@ if EXTCON
comment "Extcon Device Drivers"
+config EXTCON_ADC_JACK
+ tristate "ADC Jack extcon support"
+ depends on IIO
+ help
+ Say Y here to enable extcon device driver based on ADC values.
+
+config EXTCON_ARIZONA
+ tristate "Wolfson Arizona EXTCON support"
+ depends on MFD_ARIZONA && INPUT && SND_SOC
+ help
+ Say Y here to enable support for external accessory detection
+ with Wolfson Arizona devices. These are audio CODECs with
+ advanced audio accessory detection support.
+
config EXTCON_GPIO
tristate "GPIO extcon support"
depends on GPIOLIB
@@ -21,20 +35,14 @@ config EXTCON_GPIO
Say Y here to enable GPIO based extcon support. Note that GPIO
extcon supports single state per extcon instance.
-config EXTCON_ADC_JACK
- tristate "ADC Jack extcon support"
- depends on IIO
- help
- Say Y here to enable extcon device driver based on ADC values.
-
config EXTCON_MAX14577
- tristate "MAX14577 EXTCON Support"
+ tristate "MAX14577/77836 EXTCON Support"
depends on MFD_MAX14577
select IRQ_DOMAIN
select REGMAP_I2C
help
If you say yes here you get support for the MUIC device of
- Maxim MAX14577 PMIC. The MAX14577 MUIC is a USB port accessory
+ Maxim MAX14577/77836. The MAX14577/77836 MUIC is a USB port accessory
detector and switch.
config EXTCON_MAX77693
@@ -55,14 +63,6 @@ config EXTCON_MAX8997
Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory
detector and switch.
-config EXTCON_ARIZONA
- tristate "Wolfson Arizona EXTCON support"
- depends on MFD_ARIZONA && INPUT && SND_SOC
- help
- Say Y here to enable support for external accessory detection
- with Wolfson Arizona devices. These are audio CODECs with
- advanced audio accessory detection support.
-
config EXTCON_PALMAS
tristate "Palmas USB EXTCON support"
depends on MFD_PALMAS
@@ -70,4 +70,14 @@ config EXTCON_PALMAS
Say Y here to enable support for USB peripheral and USB host
detection by palmas usb.
+config EXTCON_SM5502
+ tristate "SM5502 EXTCON support"
+ select IRQ_DOMAIN
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ help
+ If you say yes here you get support for the MUIC device of
+ Silicon Mitus SM5502. The SM5502 is a USB port accessory
+ detector and switch.
+
endif # MULTISTATE_SWITCH
diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
index bf7861ec090..b38546eb522 100644
--- a/drivers/extcon/Makefile
+++ b/drivers/extcon/Makefile
@@ -1,12 +1,13 @@
-#
+
# Makefile for external connector class (extcon) devices
#
obj-$(CONFIG_EXTCON) += extcon-class.o
-obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o
obj-$(CONFIG_EXTCON_ADC_JACK) += extcon-adc-jack.o
+obj-$(CONFIG_EXTCON_ARIZONA) += extcon-arizona.o
+obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o
obj-$(CONFIG_EXTCON_MAX14577) += extcon-max14577.o
obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o
obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o
-obj-$(CONFIG_EXTCON_ARIZONA) += extcon-arizona.o
obj-$(CONFIG_EXTCON_PALMAS) += extcon-palmas.o
+obj-$(CONFIG_EXTCON_SM5502) += extcon-sm5502.o
diff --git a/drivers/extcon/extcon-adc-jack.c b/drivers/extcon/extcon-adc-jack.c
index e23f1c2e505..d860229e4de 100644
--- a/drivers/extcon/extcon-adc-jack.c
+++ b/drivers/extcon/extcon-adc-jack.c
@@ -39,7 +39,7 @@
* @chan: iio channel being queried.
*/
struct adc_jack_data {
- struct extcon_dev edev;
+ struct extcon_dev *edev;
const char **cable_names;
int num_cables;
@@ -64,7 +64,7 @@ static void adc_jack_handler(struct work_struct *work)
ret = iio_read_channel_raw(data->chan, &adc_val);
if (ret < 0) {
- dev_err(&data->edev.dev, "read channel() error: %d\n", ret);
+ dev_err(&data->edev->dev, "read channel() error: %d\n", ret);
return;
}
@@ -80,7 +80,7 @@ static void adc_jack_handler(struct work_struct *work)
}
/* if no def has met, it means state = 0 (no cables attached) */
- extcon_set_state(&data->edev, state);
+ extcon_set_state(data->edev, state);
}
static irqreturn_t adc_jack_irq_thread(int irq, void *_data)
@@ -102,33 +102,32 @@ static int adc_jack_probe(struct platform_device *pdev)
if (!data)
return -ENOMEM;
- data->edev.name = pdata->name;
-
if (!pdata->cable_names) {
- err = -EINVAL;
dev_err(&pdev->dev, "error: cable_names not defined.\n");
- goto out;
+ return -EINVAL;
}
- data->edev.dev.parent = &pdev->dev;
- data->edev.supported_cable = pdata->cable_names;
+ data->edev = devm_extcon_dev_allocate(&pdev->dev, pdata->cable_names);
+ if (IS_ERR(data->edev)) {
+ dev_err(&pdev->dev, "failed to allocate extcon device\n");
+ return -ENOMEM;
+ }
+ data->edev->name = pdata->name;
/* Check the length of array and set num_cables */
- for (i = 0; data->edev.supported_cable[i]; i++)
+ for (i = 0; data->edev->supported_cable[i]; i++)
;
if (i == 0 || i > SUPPORTED_CABLE_MAX) {
- err = -EINVAL;
dev_err(&pdev->dev, "error: pdata->cable_names size = %d\n",
i - 1);
- goto out;
+ return -EINVAL;
}
data->num_cables = i;
if (!pdata->adc_conditions ||
!pdata->adc_conditions[0].state) {
- err = -EINVAL;
dev_err(&pdev->dev, "error: adc_conditions not defined.\n");
- goto out;
+ return -EINVAL;
}
data->adc_conditions = pdata->adc_conditions;
@@ -138,10 +137,8 @@ static int adc_jack_probe(struct platform_device *pdev)
data->num_conditions = i;
data->chan = iio_channel_get(&pdev->dev, pdata->consumer_channel);
- if (IS_ERR(data->chan)) {
- err = PTR_ERR(data->chan);
- goto out;
- }
+ if (IS_ERR(data->chan))
+ return PTR_ERR(data->chan);
data->handling_delay = msecs_to_jiffies(pdata->handling_delay_ms);
@@ -149,15 +146,14 @@ static int adc_jack_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
- err = extcon_dev_register(&data->edev);
+ err = devm_extcon_dev_register(&pdev->dev, data->edev);
if (err)
- goto out;
+ return err;
data->irq = platform_get_irq(pdev, 0);
if (!data->irq) {
dev_err(&pdev->dev, "platform_get_irq failed\n");
- err = -ENODEV;
- goto err_irq;
+ return -ENODEV;
}
err = request_any_context_irq(data->irq, adc_jack_irq_thread,
@@ -165,15 +161,10 @@ static int adc_jack_probe(struct platform_device *pdev)
if (err < 0) {
dev_err(&pdev->dev, "error: irq %d\n", data->irq);
- goto err_irq;
+ return err;
}
return 0;
-
-err_irq:
- extcon_dev_unregister(&data->edev);
-out:
- return err;
}
static int adc_jack_remove(struct platform_device *pdev)
@@ -182,7 +173,6 @@ static int adc_jack_remove(struct platform_device *pdev)
free_irq(data->irq, data);
cancel_work_sync(&data->handler.work);
- extcon_dev_unregister(&data->edev);
return 0;
}
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 98a14f6143a..ba51588cc00 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -39,6 +39,11 @@
#define ARIZONA_ACCDET_MODE_HPL 1
#define ARIZONA_ACCDET_MODE_HPR 2
+#define ARIZONA_MICD_CLAMP_MODE_JDL 0x4
+#define ARIZONA_MICD_CLAMP_MODE_JDH 0x5
+#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
+#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
+
#define ARIZONA_HPDET_MAX 10000
#define HPDET_DEBOUNCE 500
@@ -91,7 +96,7 @@ struct arizona_extcon_info {
int hpdet_ip;
- struct extcon_dev edev;
+ struct extcon_dev *edev;
};
static const struct arizona_micd_config micd_default_modes[] = {
@@ -324,14 +329,17 @@ static void arizona_stop_mic(struct arizona_extcon_info *info)
}
static struct {
+ unsigned int threshold;
unsigned int factor_a;
unsigned int factor_b;
} arizona_hpdet_b_ranges[] = {
- { 5528, 362464 },
- { 11084, 6186851 },
- { 11065, 65460395 },
+ { 100, 5528, 362464 },
+ { 169, 11084, 6186851 },
+ { 169, 11065, 65460395 },
};
+#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
+
static struct {
int min;
int max;
@@ -386,7 +394,8 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info)
>> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
- (val < 100 || val >= 0x3fb)) {
+ (val < arizona_hpdet_b_ranges[range].threshold ||
+ val >= ARIZONA_HPDET_B_RANGE_MAX)) {
range++;
dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
range);
@@ -399,7 +408,8 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info)
}
/* If we go out of range report top of range */
- if (val < 100 || val >= 0x3fb) {
+ if (val < arizona_hpdet_b_ranges[range].threshold ||
+ val >= ARIZONA_HPDET_B_RANGE_MAX) {
dev_dbg(arizona->dev, "Measurement out of range\n");
return ARIZONA_HPDET_MAX;
}
@@ -546,7 +556,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
}
/* If the cable was removed while measuring ignore the result */
- ret = extcon_get_cable_state_(&info->edev, ARIZONA_CABLE_MECHANICAL);
+ ret = extcon_get_cable_state_(info->edev, ARIZONA_CABLE_MECHANICAL);
if (ret < 0) {
dev_err(arizona->dev, "Failed to check cable state: %d\n",
ret);
@@ -581,7 +591,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
else
report = ARIZONA_CABLE_HEADPHONE;
- ret = extcon_set_cable_state_(&info->edev, report, true);
+ ret = extcon_set_cable_state_(info->edev, report, true);
if (ret != 0)
dev_err(arizona->dev, "Failed to report HP/line: %d\n",
ret);
@@ -664,9 +674,8 @@ err:
ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
/* Just report headphone */
- ret = extcon_update_state(&info->edev,
- 1 << ARIZONA_CABLE_HEADPHONE,
- 1 << ARIZONA_CABLE_HEADPHONE);
+ ret = extcon_set_cable_state_(info->edev,
+ ARIZONA_CABLE_HEADPHONE, true);
if (ret != 0)
dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
@@ -723,9 +732,8 @@ err:
ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
/* Just report headphone */
- ret = extcon_update_state(&info->edev,
- 1 << ARIZONA_CABLE_HEADPHONE,
- 1 << ARIZONA_CABLE_HEADPHONE);
+ ret = extcon_set_cable_state_(info->edev,
+ ARIZONA_CABLE_HEADPHONE, true);
if (ret != 0)
dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
@@ -764,7 +772,7 @@ static void arizona_micd_detect(struct work_struct *work)
mutex_lock(&info->lock);
/* If the cable was removed while measuring ignore the result */
- ret = extcon_get_cable_state_(&info->edev, ARIZONA_CABLE_MECHANICAL);
+ ret = extcon_get_cable_state_(info->edev, ARIZONA_CABLE_MECHANICAL);
if (ret < 0) {
dev_err(arizona->dev, "Failed to check cable state: %d\n",
ret);
@@ -812,16 +820,15 @@ static void arizona_micd_detect(struct work_struct *work)
if (info->detecting && (val & ARIZONA_MICD_LVL_8)) {
arizona_identify_headphone(info);
- ret = extcon_update_state(&info->edev,
- 1 << ARIZONA_CABLE_MICROPHONE,
- 1 << ARIZONA_CABLE_MICROPHONE);
+ ret = extcon_set_cable_state_(info->edev,
+ ARIZONA_CABLE_MICROPHONE, true);
if (ret != 0)
dev_err(arizona->dev, "Headset report failed: %d\n",
ret);
/* Don't need to regulate for button detection */
- ret = regulator_allow_bypass(info->micvdd, false);
+ ret = regulator_allow_bypass(info->micvdd, true);
if (ret != 0) {
dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
ret);
@@ -962,10 +969,16 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
if (arizona->pdata.jd_gpio5) {
mask = ARIZONA_MICD_CLAMP_STS;
- present = 0;
+ if (arizona->pdata.jd_invert)
+ present = ARIZONA_MICD_CLAMP_STS;
+ else
+ present = 0;
} else {
mask = ARIZONA_JD1_STS;
- present = ARIZONA_JD1_STS;
+ if (arizona->pdata.jd_invert)
+ present = 0;
+ else
+ present = ARIZONA_JD1_STS;
}
ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
@@ -999,7 +1012,7 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
if (info->last_jackdet == present) {
dev_dbg(arizona->dev, "Detected jack\n");
- ret = extcon_set_cable_state_(&info->edev,
+ ret = extcon_set_cable_state_(info->edev,
ARIZONA_CABLE_MECHANICAL, true);
if (ret != 0)
@@ -1038,7 +1051,7 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
info->micd_ranges[i].key, 0);
input_sync(info->input);
- ret = extcon_update_state(&info->edev, 0xffffffff, 0);
+ ret = extcon_update_state(info->edev, 0xffffffff, 0);
if (ret != 0)
dev_err(arizona->dev, "Removal report failed: %d\n",
ret);
@@ -1096,6 +1109,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
struct arizona_pdata *pdata = &arizona->pdata;
struct arizona_extcon_info *info;
unsigned int val;
+ unsigned int clamp_mode;
int jack_irq_fall, jack_irq_rise;
int ret, mode, i, j;
@@ -1103,17 +1117,14 @@ static int arizona_extcon_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
- if (!info) {
- dev_err(&pdev->dev, "Failed to allocate memory\n");
- ret = -ENOMEM;
- goto err;
- }
+ if (!info)
+ return -ENOMEM;
- info->micvdd = devm_regulator_get(arizona->dev, "MICVDD");
+ info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
if (IS_ERR(info->micvdd)) {
ret = PTR_ERR(info->micvdd);
dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
- goto err;
+ return ret;
}
mutex_init(&info->lock);
@@ -1151,15 +1162,18 @@ static int arizona_extcon_probe(struct platform_device *pdev)
break;
}
- info->edev.name = "Headset Jack";
- info->edev.dev.parent = arizona->dev;
- info->edev.supported_cable = arizona_cable;
+ info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
+ if (IS_ERR(info->edev)) {
+ dev_err(&pdev->dev, "failed to allocate extcon device\n");
+ return -ENOMEM;
+ }
+ info->edev->name = "Headset Jack";
- ret = extcon_dev_register(&info->edev);
+ ret = devm_extcon_dev_register(&pdev->dev, info->edev);
if (ret < 0) {
dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
ret);
- goto err;
+ return ret;
}
info->input = devm_input_allocate_device(&pdev->dev);
@@ -1171,7 +1185,6 @@ static int arizona_extcon_probe(struct platform_device *pdev)
info->input->name = "Headset";
info->input->phys = "arizona/extcon";
- info->input->dev.parent = &pdev->dev;
if (pdata->num_micd_configs) {
info->micd_modes = pdata->micd_configs;
@@ -1302,16 +1315,22 @@ static int arizona_extcon_probe(struct platform_device *pdev)
regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
val);
- regmap_update_bits(arizona->regmap,
- ARIZONA_MICD_CLAMP_CONTROL,
- ARIZONA_MICD_CLAMP_MODE_MASK, 0x9);
+ if (arizona->pdata.jd_invert)
+ clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
+ else
+ clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
} else {
- regmap_update_bits(arizona->regmap,
- ARIZONA_MICD_CLAMP_CONTROL,
- ARIZONA_MICD_CLAMP_MODE_MASK, 0x4);
+ if (arizona->pdata.jd_invert)
+ clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
+ else
+ clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
}
regmap_update_bits(arizona->regmap,
+ ARIZONA_MICD_CLAMP_CONTROL,
+ ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
+
+ regmap_update_bits(arizona->regmap,
ARIZONA_JACK_DETECT_DEBOUNCE,
ARIZONA_MICD_CLAMP_DB,
ARIZONA_MICD_CLAMP_DB);
@@ -1410,8 +1429,6 @@ err_rise:
err_input:
err_register:
pm_runtime_disable(&pdev->dev);
- extcon_dev_unregister(&info->edev);
-err:
return ret;
}
@@ -1445,7 +1462,6 @@ static int arizona_extcon_remove(struct platform_device *pdev)
regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
ARIZONA_JD1_ENA, 0);
arizona_clk32k_disable(arizona);
- extcon_dev_unregister(&info->edev);
return 0;
}
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index 7ab21aa6eaa..4c2f2c543bb 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -565,6 +565,102 @@ static void dummy_sysfs_dev_release(struct device *dev)
{
}
+/*
+ * extcon_dev_allocate() - Allocate the memory of extcon device.
+ * @supported_cable: Array of supported cable names ending with NULL.
+ * If supported_cable is NULL, cable name related APIs
+ * are disabled.
+ *
+ * This function allocates the memory for extcon device without allocating
+ * memory in each extcon provider driver and initialize default setting for
+ * extcon device.
+ *
+ * Return the pointer of extcon device if success or ERR_PTR(err) if fail
+ */
+struct extcon_dev *extcon_dev_allocate(const char **supported_cable)
+{
+ struct extcon_dev *edev;
+
+ edev = kzalloc(sizeof(*edev), GFP_KERNEL);
+ if (!edev)
+ return ERR_PTR(-ENOMEM);
+
+ edev->max_supported = 0;
+ edev->supported_cable = supported_cable;
+
+ return edev;
+}
+
+/*
+ * extcon_dev_free() - Free the memory of extcon device.
+ * @edev: the extcon device to free
+ */
+void extcon_dev_free(struct extcon_dev *edev)
+{
+ kfree(edev);
+}
+EXPORT_SYMBOL_GPL(extcon_dev_free);
+
+static int devm_extcon_dev_match(struct device *dev, void *res, void *data)
+{
+ struct extcon_dev **r = res;
+
+ if (WARN_ON(!r || !*r))
+ return 0;
+
+ return *r == data;
+}
+
+static void devm_extcon_dev_release(struct device *dev, void *res)
+{
+ extcon_dev_free(*(struct extcon_dev **)res);
+}
+
+/**
+ * devm_extcon_dev_allocate - Allocate managed extcon device
+ * @dev: device owning the extcon device being created
+ * @supported_cable: Array of supported cable names ending with NULL.
+ * If supported_cable is NULL, cable name related APIs
+ * are disabled.
+ *
+ * This function manages automatically the memory of extcon device using device
+ * resource management and simplify the control of freeing the memory of extcon
+ * device.
+ *
+ * Returns the pointer memory of allocated extcon_dev if success
+ * or ERR_PTR(err) if fail
+ */
+struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
+ const char **supported_cable)
+{
+ struct extcon_dev **ptr, *edev;
+
+ ptr = devres_alloc(devm_extcon_dev_release, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return ERR_PTR(-ENOMEM);
+
+ edev = extcon_dev_allocate(supported_cable);
+ if (IS_ERR(edev)) {
+ devres_free(ptr);
+ return edev;
+ }
+
+ edev->dev.parent = dev;
+
+ *ptr = edev;
+ devres_add(dev, ptr);
+
+ return edev;
+}
+EXPORT_SYMBOL_GPL(devm_extcon_dev_allocate);
+
+void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev)
+{
+ WARN_ON(devres_release(dev, devm_extcon_dev_release,
+ devm_extcon_dev_match, edev));
+}
+EXPORT_SYMBOL_GPL(devm_extcon_dev_free);
+
/**
* extcon_dev_register() - Register a new extcon device
* @edev : the new extcon device (should be allocated before calling)
@@ -819,6 +915,63 @@ void extcon_dev_unregister(struct extcon_dev *edev)
}
EXPORT_SYMBOL_GPL(extcon_dev_unregister);
+static void devm_extcon_dev_unreg(struct device *dev, void *res)
+{
+ extcon_dev_unregister(*(struct extcon_dev **)res);
+}
+
+/**
+ * devm_extcon_dev_register() - Resource-managed extcon_dev_register()
+ * @dev: device to allocate extcon device
+ * @edev: the new extcon device to register
+ *
+ * Managed extcon_dev_register() function. If extcon device is attached with
+ * this function, that extcon device is automatically unregistered on driver
+ * detach. Internally this function calls extcon_dev_register() function.
+ * To get more information, refer that function.
+ *
+ * If extcon device is registered with this function and the device needs to be
+ * unregistered separately, devm_extcon_dev_unregister() should be used.
+ *
+ * Returns 0 if success or negaive error number if failure.
+ */
+int devm_extcon_dev_register(struct device *dev, struct extcon_dev *edev)
+{
+ struct extcon_dev **ptr;
+ int ret;
+
+ ptr = devres_alloc(devm_extcon_dev_unreg, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ ret = extcon_dev_register(edev);
+ if (ret) {
+ devres_free(ptr);
+ return ret;
+ }
+
+ *ptr = edev;
+ devres_add(dev, ptr);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devm_extcon_dev_register);
+
+/**
+ * devm_extcon_dev_unregister() - Resource-managed extcon_dev_unregister()
+ * @dev: device the extcon belongs to
+ * @edev: the extcon device to unregister
+ *
+ * Unregister extcon device that is registered with devm_extcon_dev_register()
+ * function.
+ */
+void devm_extcon_dev_unregister(struct device *dev, struct extcon_dev *edev)
+{
+ WARN_ON(devres_release(dev, devm_extcon_dev_unreg,
+ devm_extcon_dev_match, edev));
+}
+EXPORT_SYMBOL_GPL(devm_extcon_dev_unregister);
+
#ifdef CONFIG_OF
/*
* extcon_get_edev_by_phandle - Get the extcon device from devicetree
diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 13d522255d8..5b7ec274cb6 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -32,7 +32,7 @@
#include <linux/extcon/extcon-gpio.h>
struct gpio_extcon_data {
- struct extcon_dev edev;
+ struct extcon_dev *edev;
unsigned gpio;
bool gpio_active_low;
const char *state_on;
@@ -53,7 +53,7 @@ static void gpio_extcon_work(struct work_struct *work)
state = gpio_get_value(data->gpio);
if (data->gpio_active_low)
state = !state;
- extcon_set_state(&data->edev, state);
+ extcon_set_state(data->edev, state);
}
static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
@@ -67,9 +67,10 @@ static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
static ssize_t extcon_gpio_print_state(struct extcon_dev *edev, char *buf)
{
- struct gpio_extcon_data *extcon_data =
- container_of(edev, struct gpio_extcon_data, edev);
+ struct device *dev = edev->dev.parent;
+ struct gpio_extcon_data *extcon_data = dev_get_drvdata(dev);
const char *state;
+
if (extcon_get_state(edev))
state = extcon_data->state_on;
else
@@ -98,15 +99,20 @@ static int gpio_extcon_probe(struct platform_device *pdev)
if (!extcon_data)
return -ENOMEM;
- extcon_data->edev.name = pdata->name;
- extcon_data->edev.dev.parent = &pdev->dev;
+ extcon_data->edev = devm_extcon_dev_allocate(&pdev->dev, NULL);
+ if (IS_ERR(extcon_data->edev)) {
+ dev_err(&pdev->dev, "failed to allocate extcon device\n");
+ return -ENOMEM;
+ }
+ extcon_data->edev->name = pdata->name;
+
extcon_data->gpio = pdata->gpio;
extcon_data->gpio_active_low = pdata->gpio_active_low;
extcon_data->state_on = pdata->state_on;
extcon_data->state_off = pdata->state_off;
extcon_data->check_on_resume = pdata->check_on_resume;
if (pdata->state_on && pdata->state_off)
- extcon_data->edev.print_state = extcon_gpio_print_state;
+ extcon_data->edev->print_state = extcon_gpio_print_state;
ret = devm_gpio_request_one(&pdev->dev, extcon_data->gpio, GPIOF_DIR_IN,
pdev->name);
@@ -121,34 +127,27 @@ static int gpio_extcon_probe(struct platform_device *pdev)
msecs_to_jiffies(pdata->debounce);
}
- ret = extcon_dev_register(&extcon_data->edev);
+ ret = devm_extcon_dev_register(&pdev->dev, extcon_data->edev);
if (ret < 0)
return ret;
INIT_DELAYED_WORK(&extcon_data->work, gpio_extcon_work);
extcon_data->irq = gpio_to_irq(extcon_data->gpio);
- if (extcon_data->irq < 0) {
- ret = extcon_data->irq;
- goto err;
- }
+ if (extcon_data->irq < 0)
+ return extcon_data->irq;
ret = request_any_context_irq(extcon_data->irq, gpio_irq_handler,
pdata->irq_flags, pdev->name,
extcon_data);
if (ret < 0)
- goto err;
+ return ret;
platform_set_drvdata(pdev, extcon_data);
/* Perform initial detection */
gpio_extcon_work(&extcon_data->work.work);
return 0;
-
-err:
- extcon_dev_unregister(&extcon_data->edev);
-
- return ret;
}
static int gpio_extcon_remove(struct platform_device *pdev)
@@ -157,7 +156,6 @@ static int gpio_extcon_remove(struct platform_device *pdev)
cancel_delayed_work_sync(&extcon_data->work);
free_irq(extcon_data->irq, extcon_data);
- extcon_dev_unregister(&extcon_data->edev);
return 0;
}
diff --git a/drivers/extcon/extcon-max14577.c b/drivers/extcon/extcon-max14577.c
index 3846941801b..7309743d0da 100644
--- a/drivers/extcon/extcon-max14577.c
+++ b/drivers/extcon/extcon-max14577.c
@@ -1,8 +1,9 @@
/*
- * extcon-max14577.c - MAX14577 extcon driver to support MAX14577 MUIC
+ * extcon-max14577.c - MAX14577/77836 extcon driver to support MUIC
*
- * Copyright (C) 2013 Samsung Electrnoics
+ * Copyright (C) 2013,2014 Samsung Electrnoics
* Chanwoo Choi <cw00.choi@samsung.com>
+ * Krzysztof Kozlowski <k.kozlowski@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -24,7 +25,6 @@
#include <linux/mfd/max14577-private.h>
#include <linux/extcon.h>
-#define DEV_NAME "max14577-muic"
#define DELAY_MS_DEFAULT 17000 /* unit: millisecond */
enum max14577_muic_adc_debounce_time {
@@ -40,6 +40,42 @@ enum max14577_muic_status {
MAX14577_MUIC_STATUS_END,
};
+/**
+ * struct max14577_muic_irq
+ * @irq: the index of irq list of MUIC device.
+ * @name: the name of irq.
+ * @virq: the virtual irq to use irq domain
+ */
+struct max14577_muic_irq {
+ unsigned int irq;
+ const char *name;
+ unsigned int virq;
+};
+
+static struct max14577_muic_irq max14577_muic_irqs[] = {
+ { MAX14577_IRQ_INT1_ADC, "muic-ADC" },
+ { MAX14577_IRQ_INT1_ADCLOW, "muic-ADCLOW" },
+ { MAX14577_IRQ_INT1_ADCERR, "muic-ADCError" },
+ { MAX14577_IRQ_INT2_CHGTYP, "muic-CHGTYP" },
+ { MAX14577_IRQ_INT2_CHGDETRUN, "muic-CHGDETRUN" },
+ { MAX14577_IRQ_INT2_DCDTMR, "muic-DCDTMR" },
+ { MAX14577_IRQ_INT2_DBCHG, "muic-DBCHG" },
+ { MAX14577_IRQ_INT2_VBVOLT, "muic-VBVOLT" },
+};
+
+static struct max14577_muic_irq max77836_muic_irqs[] = {
+ { MAX14577_IRQ_INT1_ADC, "muic-ADC" },
+ { MAX14577_IRQ_INT1_ADCLOW, "muic-ADCLOW" },
+ { MAX14577_IRQ_INT1_ADCERR, "muic-ADCError" },
+ { MAX77836_IRQ_INT1_ADC1K, "muic-ADC1K" },
+ { MAX14577_IRQ_INT2_CHGTYP, "muic-CHGTYP" },
+ { MAX14577_IRQ_INT2_CHGDETRUN, "muic-CHGDETRUN" },
+ { MAX14577_IRQ_INT2_DCDTMR, "muic-DCDTMR" },
+ { MAX14577_IRQ_INT2_DBCHG, "muic-DBCHG" },
+ { MAX14577_IRQ_INT2_VBVOLT, "muic-VBVOLT" },
+ { MAX77836_IRQ_INT2_VIDRM, "muic-VIDRM" },
+};
+
struct max14577_muic_info {
struct device *dev;
struct max14577 *max14577;
@@ -48,6 +84,8 @@ struct max14577_muic_info {
int prev_chg_type;
u8 status[MAX14577_MUIC_STATUS_END];
+ struct max14577_muic_irq *muic_irqs;
+ unsigned int muic_irqs_num;
bool irq_adc;
bool irq_chg;
struct work_struct irq_work;
@@ -74,29 +112,6 @@ enum max14577_muic_cable_group {
MAX14577_CABLE_GROUP_CHG,
};
-/**
- * struct max14577_muic_irq
- * @irq: the index of irq list of MUIC device.
- * @name: the name of irq.
- * @virq: the virtual irq to use irq domain
- */
-struct max14577_muic_irq {
- unsigned int irq;
- const char *name;
- unsigned int virq;
-};
-
-static struct max14577_muic_irq muic_irqs[] = {
- { MAX14577_IRQ_INT1_ADC, "muic-ADC" },
- { MAX14577_IRQ_INT1_ADCLOW, "muic-ADCLOW" },
- { MAX14577_IRQ_INT1_ADCERR, "muic-ADCError" },
- { MAX14577_IRQ_INT2_CHGTYP, "muic-CHGTYP" },
- { MAX14577_IRQ_INT2_CHGDETRUN, "muic-CHGDETRUN" },
- { MAX14577_IRQ_INT2_DCDTMR, "muic-DCDTMR" },
- { MAX14577_IRQ_INT2_DBCHG, "muic-DBCHG" },
- { MAX14577_IRQ_INT2_VBVOLT, "muic-VBVOLT" },
-};
-
/* Define supported accessory type */
enum max14577_muic_acc_type {
MAX14577_MUIC_ADC_GROUND = 0x0,
@@ -528,21 +543,12 @@ static void max14577_muic_irq_work(struct work_struct *work)
return;
}
-static irqreturn_t max14577_muic_irq_handler(int irq, void *data)
+/*
+ * Sets irq_adc or irq_chg in max14577_muic_info and returns 1.
+ * Returns 0 if irq_type does not match registered IRQ for this device type.
+ */
+static int max14577_parse_irq(struct max14577_muic_info *info, int irq_type)
{
- struct max14577_muic_info *info = data;
- int i, irq_type = -1;
-
- /*
- * We may be called multiple times for different nested IRQ-s.
- * Including changes in INT1_ADC and INT2_CGHTYP at once.
- * However we only need to know whether it was ADC, charger
- * or both interrupts so decode IRQ and turn on proper flags.
- */
- for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
- if (irq == muic_irqs[i].virq)
- irq_type = muic_irqs[i].irq;
-
switch (irq_type) {
case MAX14577_IRQ_INT1_ADC:
case MAX14577_IRQ_INT1_ADCLOW:
@@ -550,7 +556,7 @@ static irqreturn_t max14577_muic_irq_handler(int irq, void *data)
/* Handle all of accessory except for
type of charger accessory */
info->irq_adc = true;
- break;
+ return 1;
case MAX14577_IRQ_INT2_CHGTYP:
case MAX14577_IRQ_INT2_CHGDETRUN:
case MAX14577_IRQ_INT2_DCDTMR:
@@ -558,8 +564,62 @@ static irqreturn_t max14577_muic_irq_handler(int irq, void *data)
case MAX14577_IRQ_INT2_VBVOLT:
/* Handle charger accessory */
info->irq_chg = true;
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+/*
+ * Sets irq_adc or irq_chg in max14577_muic_info and returns 1.
+ * Returns 0 if irq_type does not match registered IRQ for this device type.
+ */
+static int max77836_parse_irq(struct max14577_muic_info *info, int irq_type)
+{
+ /* First check common max14577 interrupts */
+ if (max14577_parse_irq(info, irq_type))
+ return 1;
+
+ switch (irq_type) {
+ case MAX77836_IRQ_INT1_ADC1K:
+ info->irq_adc = true;
+ return 1;
+ case MAX77836_IRQ_INT2_VIDRM:
+ /* Handle charger accessory */
+ info->irq_chg = true;
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static irqreturn_t max14577_muic_irq_handler(int irq, void *data)
+{
+ struct max14577_muic_info *info = data;
+ int i, irq_type = -1;
+ bool irq_parsed;
+
+ /*
+ * We may be called multiple times for different nested IRQ-s.
+ * Including changes in INT1_ADC and INT2_CGHTYP at once.
+ * However we only need to know whether it was ADC, charger
+ * or both interrupts so decode IRQ and turn on proper flags.
+ */
+ for (i = 0; i < info->muic_irqs_num; i++)
+ if (irq == info->muic_irqs[i].virq)
+ irq_type = info->muic_irqs[i].irq;
+
+ switch (info->max14577->dev_type) {
+ case MAXIM_DEVICE_TYPE_MAX77836:
+ irq_parsed = max77836_parse_irq(info, irq_type);
break;
+ case MAXIM_DEVICE_TYPE_MAX14577:
default:
+ irq_parsed = max14577_parse_irq(info, irq_type);
+ break;
+ }
+
+ if (!irq_parsed) {
dev_err(info->dev, "muic interrupt: irq %d occurred, skipped\n",
irq_type);
return IRQ_HANDLED;
@@ -632,10 +692,9 @@ static int max14577_muic_probe(struct platform_device *pdev)
u8 id;
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
- if (!info) {
- dev_err(&pdev->dev, "failed to allocate memory\n");
+ if (!info)
return -ENOMEM;
- }
+
info->dev = &pdev->dev;
info->max14577 = max14577;
@@ -644,13 +703,24 @@ static int max14577_muic_probe(struct platform_device *pdev)
INIT_WORK(&info->irq_work, max14577_muic_irq_work);
+ switch (max14577->dev_type) {
+ case MAXIM_DEVICE_TYPE_MAX77836:
+ info->muic_irqs = max77836_muic_irqs;
+ info->muic_irqs_num = ARRAY_SIZE(max77836_muic_irqs);
+ break;
+ case MAXIM_DEVICE_TYPE_MAX14577:
+ default:
+ info->muic_irqs = max14577_muic_irqs;
+ info->muic_irqs_num = ARRAY_SIZE(max14577_muic_irqs);
+ }
+
/* Support irq domain for max14577 MUIC device */
- for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
- struct max14577_muic_irq *muic_irq = &muic_irqs[i];
+ for (i = 0; i < info->muic_irqs_num; i++) {
+ struct max14577_muic_irq *muic_irq = &info->muic_irqs[i];
unsigned int virq = 0;
virq = regmap_irq_get_virq(max14577->irq_data, muic_irq->irq);
- if (!virq)
+ if (virq <= 0)
return -EINVAL;
muic_irq->virq = virq;
@@ -668,14 +738,16 @@ static int max14577_muic_probe(struct platform_device *pdev)
}
/* Initialize extcon device */
- info->edev = devm_kzalloc(&pdev->dev, sizeof(*info->edev), GFP_KERNEL);
- if (!info->edev) {
+ info->edev = devm_extcon_dev_allocate(&pdev->dev,
+ max14577_extcon_cable);
+ if (IS_ERR(info->edev)) {
dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
return -ENOMEM;
}
- info->edev->name = DEV_NAME;
- info->edev->supported_cable = max14577_extcon_cable;
- ret = extcon_dev_register(info->edev);
+
+ info->edev->name = dev_name(&pdev->dev);
+
+ ret = devm_extcon_dev_register(&pdev->dev, info->edev);
if (ret) {
dev_err(&pdev->dev, "failed to register extcon device\n");
return ret;
@@ -694,7 +766,7 @@ static int max14577_muic_probe(struct platform_device *pdev)
MAX14577_REG_DEVICEID, &id);
if (ret < 0) {
dev_err(&pdev->dev, "failed to read revision number\n");
- goto err_extcon;
+ return ret;
}
dev_info(info->dev, "device ID : 0x%x\n", id);
@@ -710,19 +782,10 @@ static int max14577_muic_probe(struct platform_device *pdev)
* driver should notify cable state to upper layer.
*/
INIT_DELAYED_WORK(&info->wq_detcable, max14577_muic_detect_cable_wq);
- ret = queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
+ queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
delay_jiffies);
- if (ret < 0) {
- dev_err(&pdev->dev,
- "failed to schedule delayed work for cable detect\n");
- goto err_extcon;
- }
return ret;
-
-err_extcon:
- extcon_dev_unregister(info->edev);
- return ret;
}
static int max14577_muic_remove(struct platform_device *pdev)
@@ -730,23 +793,30 @@ static int max14577_muic_remove(struct platform_device *pdev)
struct max14577_muic_info *info = platform_get_drvdata(pdev);
cancel_work_sync(&info->irq_work);
- extcon_dev_unregister(info->edev);
return 0;
}
+static const struct platform_device_id max14577_muic_id[] = {
+ { "max14577-muic", MAXIM_DEVICE_TYPE_MAX14577, },
+ { "max77836-muic", MAXIM_DEVICE_TYPE_MAX77836, },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, max14577_muic_id);
+
static struct platform_driver max14577_muic_driver = {
.driver = {
- .name = DEV_NAME,
+ .name = "max14577-muic",
.owner = THIS_MODULE,
},
.probe = max14577_muic_probe,
.remove = max14577_muic_remove,
+ .id_table = max14577_muic_id,
};
module_platform_driver(max14577_muic_driver);
-MODULE_DESCRIPTION("MAXIM 14577 Extcon driver");
-MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
+MODULE_DESCRIPTION("Maxim 14577/77836 Extcon driver");
+MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>, Krzysztof Kozlowski <k.kozlowski@samsung.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:extcon-max14577");
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index da268fbc901..77460f2c1ca 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -255,10 +255,10 @@ static int max77693_muic_set_debounce_time(struct max77693_muic_info *info,
case ADC_DEBOUNCE_TIME_10MS:
case ADC_DEBOUNCE_TIME_25MS:
case ADC_DEBOUNCE_TIME_38_62MS:
- ret = max77693_update_reg(info->max77693->regmap_muic,
+ ret = regmap_update_bits(info->max77693->regmap_muic,
MAX77693_MUIC_REG_CTRL3,
- time << CONTROL3_ADCDBSET_SHIFT,
- CONTROL3_ADCDBSET_MASK);
+ CONTROL3_ADCDBSET_MASK,
+ time << CONTROL3_ADCDBSET_SHIFT);
if (ret) {
dev_err(info->dev, "failed to set ADC debounce time\n");
return ret;
@@ -286,15 +286,15 @@ static int max77693_muic_set_path(struct max77693_muic_info *info,
u8 val, bool attached)
{
int ret = 0;
- u8 ctrl1, ctrl2 = 0;
+ unsigned int ctrl1, ctrl2 = 0;
if (attached)
ctrl1 = val;
else
ctrl1 = CONTROL1_SW_OPEN;
- ret = max77693_update_reg(info->max77693->regmap_muic,
- MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK);
+ ret = regmap_update_bits(info->max77693->regmap_muic,
+ MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return ret;
@@ -305,9 +305,9 @@ static int max77693_muic_set_path(struct max77693_muic_info *info,
else
ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
- ret = max77693_update_reg(info->max77693->regmap_muic,
- MAX77693_MUIC_REG_CTRL2, ctrl2,
- CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
+ ret = regmap_update_bits(info->max77693->regmap_muic,
+ MAX77693_MUIC_REG_CTRL2,
+ CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return ret;
@@ -969,8 +969,8 @@ static void max77693_muic_irq_work(struct work_struct *work)
if (info->irq == muic_irqs[i].virq)
irq_type = muic_irqs[i].irq;
- ret = max77693_bulk_read(info->max77693->regmap_muic,
- MAX77693_MUIC_REG_STATUS1, 2, info->status);
+ ret = regmap_bulk_read(info->max77693->regmap_muic,
+ MAX77693_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read MUIC register\n");
mutex_unlock(&info->mutex);
@@ -1042,8 +1042,8 @@ static int max77693_muic_detect_accessory(struct max77693_muic_info *info)
mutex_lock(&info->mutex);
/* Read STATUSx register to detect accessory */
- ret = max77693_bulk_read(info->max77693->regmap_muic,
- MAX77693_MUIC_REG_STATUS1, 2, info->status);
+ ret = regmap_bulk_read(info->max77693->regmap_muic,
+ MAX77693_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read MUIC register\n");
mutex_unlock(&info->mutex);
@@ -1095,14 +1095,13 @@ static int max77693_muic_probe(struct platform_device *pdev)
int delay_jiffies;
int ret;
int i;
- u8 id;
+ unsigned int id;
info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info),
GFP_KERNEL);
- if (!info) {
- dev_err(&pdev->dev, "failed to allocate memory\n");
+ if (!info)
return -ENOMEM;
- }
+
info->dev = &pdev->dev;
info->max77693 = max77693;
if (info->max77693->regmap_muic) {
@@ -1154,7 +1153,8 @@ static int max77693_muic_probe(struct platform_device *pdev)
struct max77693_muic_irq *muic_irq = &muic_irqs[i];
unsigned int virq = 0;
- virq = irq_create_mapping(max77693->irq_domain, muic_irq->irq);
+ virq = regmap_irq_get_virq(max77693->irq_data_muic,
+ muic_irq->irq);
if (!virq) {
ret = -EINVAL;
goto err_irq;
@@ -1175,25 +1175,23 @@ static int max77693_muic_probe(struct platform_device *pdev)
}
/* Initialize extcon device */
- info->edev = devm_kzalloc(&pdev->dev, sizeof(struct extcon_dev),
- GFP_KERNEL);
- if (!info->edev) {
+ info->edev = devm_extcon_dev_allocate(&pdev->dev,
+ max77693_extcon_cable);
+ if (IS_ERR(info->edev)) {
dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
ret = -ENOMEM;
goto err_irq;
}
info->edev->name = DEV_NAME;
- info->edev->dev.parent = &pdev->dev;
- info->edev->supported_cable = max77693_extcon_cable;
- ret = extcon_dev_register(info->edev);
+
+ ret = devm_extcon_dev_register(&pdev->dev, info->edev);
if (ret) {
dev_err(&pdev->dev, "failed to register extcon device\n");
goto err_irq;
}
-
/* Initialize MUIC register by using platform data or default data */
- if (pdata->muic_data) {
+ if (pdata && pdata->muic_data) {
init_data = pdata->muic_data->init_data;
num_init_data = pdata->muic_data->num_init_data;
} else {
@@ -1205,7 +1203,7 @@ static int max77693_muic_probe(struct platform_device *pdev)
enum max77693_irq_source irq_src
= MAX77693_IRQ_GROUP_NR;
- max77693_write_reg(info->max77693->regmap_muic,
+ regmap_write(info->max77693->regmap_muic,
init_data[i].addr,
init_data[i].data);
@@ -1226,7 +1224,7 @@ static int max77693_muic_probe(struct platform_device *pdev)
= init_data[i].data;
}
- if (pdata->muic_data) {
+ if (pdata && pdata->muic_data) {
struct max77693_muic_platform_data *muic_pdata
= pdata->muic_data;
@@ -1263,11 +1261,11 @@ static int max77693_muic_probe(struct platform_device *pdev)
max77693_muic_set_path(info, info->path_uart, true);
/* Check revision number of MUIC device*/
- ret = max77693_read_reg(info->max77693->regmap_muic,
+ ret = regmap_read(info->max77693->regmap_muic,
MAX77693_MUIC_REG_ID, &id);
if (ret < 0) {
dev_err(&pdev->dev, "failed to read revision number\n");
- goto err_extcon;
+ goto err_irq;
}
dev_info(info->dev, "device ID : 0x%x\n", id);
@@ -1283,12 +1281,11 @@ static int max77693_muic_probe(struct platform_device *pdev)
* driver should notify cable state to upper layer.
*/
INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq);
- schedule_delayed_work(&info->wq_detcable, delay_jiffies);
+ queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
+ delay_jiffies);
return ret;
-err_extcon:
- extcon_dev_unregister(info->edev);
err_irq:
while (--i >= 0)
free_irq(muic_irqs[i].virq, info);
@@ -1304,7 +1301,6 @@ static int max77693_muic_remove(struct platform_device *pdev)
free_irq(muic_irqs[i].virq, info);
cancel_work_sync(&info->irq_work);
input_unregister_device(info->dock);
- extcon_dev_unregister(info->edev);
return 0;
}
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 6a00464658c..75e501c9800 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -661,10 +661,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
info = devm_kzalloc(&pdev->dev, sizeof(struct max8997_muic_info),
GFP_KERNEL);
- if (!info) {
- dev_err(&pdev->dev, "failed to allocate memory\n");
+ if (!info)
return -ENOMEM;
- }
info->dev = &pdev->dev;
info->muic = max8997->muic;
@@ -699,23 +697,21 @@ static int max8997_muic_probe(struct platform_device *pdev)
}
/* External connector */
- info->edev = devm_kzalloc(&pdev->dev, sizeof(struct extcon_dev),
- GFP_KERNEL);
- if (!info->edev) {
+ info->edev = devm_extcon_dev_allocate(&pdev->dev, max8997_extcon_cable);
+ if (IS_ERR(info->edev)) {
dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
ret = -ENOMEM;
goto err_irq;
}
info->edev->name = DEV_NAME;
- info->edev->dev.parent = &pdev->dev;
- info->edev->supported_cable = max8997_extcon_cable;
- ret = extcon_dev_register(info->edev);
+
+ ret = devm_extcon_dev_register(&pdev->dev, info->edev);
if (ret) {
dev_err(&pdev->dev, "failed to register extcon device\n");
goto err_irq;
}
- if (pdata->muic_pdata) {
+ if (pdata && pdata->muic_pdata) {
struct max8997_muic_platform_data *muic_pdata
= pdata->muic_pdata;
@@ -770,7 +766,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
* driver should notify cable state to upper layer.
*/
INIT_DELAYED_WORK(&info->wq_detcable, max8997_muic_detect_cable_wq);
- schedule_delayed_work(&info->wq_detcable, delay_jiffies);
+ queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
+ delay_jiffies);
return 0;
@@ -789,8 +786,6 @@ static int max8997_muic_remove(struct platform_device *pdev)
free_irq(muic_irqs[i].virq, info);
cancel_work_sync(&info->irq_work);
- extcon_dev_unregister(info->edev);
-
return 0;
}
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index ddff2b72f0a..230e1220ce4 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -23,6 +23,7 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
+#include <linux/slab.h>
#include <linux/err.h>
#include <linux/mfd/palmas.h>
#include <linux/of.h>
@@ -56,7 +57,7 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
- extcon_set_cable_state(&palmas_usb->edev, "USB", true);
+ extcon_set_cable_state(palmas_usb->edev, "USB", true);
dev_info(palmas_usb->dev, "USB cable is attached\n");
} else {
dev_dbg(palmas_usb->dev,
@@ -65,7 +66,7 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
} else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
- extcon_set_cable_state(&palmas_usb->edev, "USB", false);
+ extcon_set_cable_state(palmas_usb->edev, "USB", false);
dev_info(palmas_usb->dev, "USB cable is detached\n");
} else {
dev_dbg(palmas_usb->dev,
@@ -92,7 +93,7 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
- extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
+ extcon_set_cable_state(palmas_usb->edev, "USB-HOST", true);
dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
@@ -100,17 +101,17 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
- extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", false);
+ extcon_set_cable_state(palmas_usb->edev, "USB-HOST", false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
- extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", false);
+ extcon_set_cable_state(palmas_usb->edev, "USB-HOST", false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
- extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
+ extcon_set_cable_state(palmas_usb->edev, "USB-HOST", true);
dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
}
@@ -186,13 +187,19 @@ static int palmas_usb_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, palmas_usb);
- palmas_usb->edev.supported_cable = palmas_extcon_cable;
- palmas_usb->edev.dev.parent = palmas_usb->dev;
- palmas_usb->edev.mutually_exclusive = mutually_exclusive;
+ palmas_usb->edev = devm_extcon_dev_allocate(&pdev->dev,
+ palmas_extcon_cable);
+ if (IS_ERR(palmas_usb->edev)) {
+ dev_err(&pdev->dev, "failed to allocate extcon device\n");
+ return -ENOMEM;
+ }
+ palmas_usb->edev->name = kstrdup(node->name, GFP_KERNEL);
+ palmas_usb->edev->mutually_exclusive = mutually_exclusive;
- status = extcon_dev_register(&palmas_usb->edev);
+ status = devm_extcon_dev_register(&pdev->dev, palmas_usb->edev);
if (status) {
dev_err(&pdev->dev, "failed to register extcon device\n");
+ kfree(palmas_usb->edev->name);
return status;
}
@@ -206,7 +213,8 @@ static int palmas_usb_probe(struct platform_device *pdev)
if (status < 0) {
dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
palmas_usb->id_irq, status);
- goto fail_extcon;
+ kfree(palmas_usb->edev->name);
+ return status;
}
}
@@ -220,25 +228,21 @@ static int palmas_usb_probe(struct platform_device *pdev)
if (status < 0) {
dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
palmas_usb->vbus_irq, status);
- goto fail_extcon;
+ kfree(palmas_usb->edev->name);
+ return status;
}
}
palmas_enable_irq(palmas_usb);
device_set_wakeup_capable(&pdev->dev, true);
return 0;
-
-fail_extcon:
- extcon_dev_unregister(&palmas_usb->edev);
-
- return status;
}
static int palmas_usb_remove(struct platform_device *pdev)
{
struct palmas_usb *palmas_usb = platform_get_drvdata(pdev);
- extcon_dev_unregister(&palmas_usb->edev);
+ kfree(palmas_usb->edev->name);
return 0;
}
@@ -273,7 +277,7 @@ static int palmas_usb_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(palmas_pm_ops, palmas_usb_suspend, palmas_usb_resume);
-static struct of_device_id of_palmas_match_tbl[] = {
+static const struct of_device_id of_palmas_match_tbl[] = {
{ .compatible = "ti,palmas-usb", },
{ .compatible = "ti,palmas-usb-vid", },
{ .compatible = "ti,twl6035-usb", },
diff --git a/drivers/extcon/extcon-sm5502.c b/drivers/extcon/extcon-sm5502.c
new file mode 100644
index 00000000000..560d7dccec7
--- /dev/null
+++ b/drivers/extcon/extcon-sm5502.c
@@ -0,0 +1,724 @@
+/*
+ * extcon-sm5502.c - Silicon Mitus SM5502 extcon drvier to support USB switches
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ * Author: Chanwoo Choi <cw00.choi@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/extcon.h>
+#include <linux/extcon/sm5502.h>
+
+#define DELAY_MS_DEFAULT 17000 /* unit: millisecond */
+
+struct muic_irq {
+ unsigned int irq;
+ const char *name;
+ unsigned int virq;
+};
+
+struct reg_data {
+ u8 reg;
+ unsigned int val;
+ bool invert;
+};
+
+struct sm5502_muic_info {
+ struct device *dev;
+ struct extcon_dev *edev;
+
+ struct i2c_client *i2c;
+ struct regmap *regmap;
+
+ struct regmap_irq_chip_data *irq_data;
+ struct muic_irq *muic_irqs;
+ unsigned int num_muic_irqs;
+ int irq;
+ bool irq_attach;
+ bool irq_detach;
+ struct work_struct irq_work;
+
+ struct reg_data *reg_data;
+ unsigned int num_reg_data;
+
+ 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;
+};
+
+/* Default value of SM5502 register to bring up MUIC device. */
+static struct reg_data sm5502_reg_data[] = {
+ {
+ .reg = SM5502_REG_CONTROL,
+ .val = SM5502_REG_CONTROL_MASK_INT_MASK,
+ .invert = false,
+ }, {
+ .reg = SM5502_REG_INTMASK1,
+ .val = SM5502_REG_INTM1_KP_MASK
+ | SM5502_REG_INTM1_LKP_MASK
+ | SM5502_REG_INTM1_LKR_MASK,
+ .invert = true,
+ }, {
+ .reg = SM5502_REG_INTMASK2,
+ .val = SM5502_REG_INTM2_VBUS_DET_MASK
+ | SM5502_REG_INTM2_REV_ACCE_MASK
+ | SM5502_REG_INTM2_ADC_CHG_MASK
+ | SM5502_REG_INTM2_STUCK_KEY_MASK
+ | SM5502_REG_INTM2_STUCK_KEY_RCV_MASK
+ | SM5502_REG_INTM2_MHL_MASK,
+ .invert = true,
+ },
+ { }
+};
+
+/* List of detectable cables */
+enum {
+ EXTCON_CABLE_USB = 0,
+ EXTCON_CABLE_USB_HOST,
+ EXTCON_CABLE_TA,
+
+ EXTCON_CABLE_END,
+};
+
+static const char *sm5502_extcon_cable[] = {
+ [EXTCON_CABLE_USB] = "USB",
+ [EXTCON_CABLE_USB_HOST] = "USB-Host",
+ [EXTCON_CABLE_TA] = "TA",
+ NULL,
+};
+
+/* Define supported accessory type */
+enum sm5502_muic_acc_type {
+ SM5502_MUIC_ADC_GROUND = 0x0,
+ SM5502_MUIC_ADC_SEND_END_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S1_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S2_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S3_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S4_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S5_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S6_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S7_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S8_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S9_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S10_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S11_BUTTON,
+ SM5502_MUIC_ADC_REMOTE_S12_BUTTON,
+ SM5502_MUIC_ADC_RESERVED_ACC_1,
+ SM5502_MUIC_ADC_RESERVED_ACC_2,
+ SM5502_MUIC_ADC_RESERVED_ACC_3,
+ SM5502_MUIC_ADC_RESERVED_ACC_4,
+ SM5502_MUIC_ADC_RESERVED_ACC_5,
+ SM5502_MUIC_ADC_AUDIO_TYPE2,
+ SM5502_MUIC_ADC_PHONE_POWERED_DEV,
+ SM5502_MUIC_ADC_TTY_CONVERTER,
+ SM5502_MUIC_ADC_UART_CABLE,
+ SM5502_MUIC_ADC_TYPE1_CHARGER,
+ SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB,
+ SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB,
+ SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE,
+ SM5502_MUIC_ADC_TYPE2_CHARGER,
+ SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART,
+ SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART,
+ SM5502_MUIC_ADC_AUDIO_TYPE1,
+ SM5502_MUIC_ADC_OPEN = 0x1f,
+
+ /* The below accessories have same ADC value (0x1f or 0x1e).
+ So, Device type1 is used to separate specific accessory. */
+ /* |---------|--ADC| */
+ /* | [7:5]|[4:0]| */
+ SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */
+ SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END = 0x5e, /* | 010|11110| */
+ /* |Dev Type1|--ADC| */
+ SM5502_MUIC_ADC_OPEN_USB = 0x5f, /* | 010|11111| */
+ SM5502_MUIC_ADC_OPEN_TA = 0xdf, /* | 110|11111| */
+ SM5502_MUIC_ADC_OPEN_USB_OTG = 0xff, /* | 111|11111| */
+};
+
+/* List of supported interrupt for SM5502 */
+static struct muic_irq sm5502_muic_irqs[] = {
+ { SM5502_IRQ_INT1_ATTACH, "muic-attach" },
+ { SM5502_IRQ_INT1_DETACH, "muic-detach" },
+ { SM5502_IRQ_INT1_KP, "muic-kp" },
+ { SM5502_IRQ_INT1_LKP, "muic-lkp" },
+ { SM5502_IRQ_INT1_LKR, "muic-lkr" },
+ { SM5502_IRQ_INT1_OVP_EVENT, "muic-ovp-event" },
+ { SM5502_IRQ_INT1_OCP_EVENT, "muic-ocp-event" },
+ { SM5502_IRQ_INT1_OVP_OCP_DIS, "muic-ovp-ocp-dis" },
+ { SM5502_IRQ_INT2_VBUS_DET, "muic-vbus-det" },
+ { SM5502_IRQ_INT2_REV_ACCE, "muic-rev-acce" },
+ { SM5502_IRQ_INT2_ADC_CHG, "muic-adc-chg" },
+ { SM5502_IRQ_INT2_STUCK_KEY, "muic-stuck-key" },
+ { SM5502_IRQ_INT2_STUCK_KEY_RCV, "muic-stuck-key-rcv" },
+ { SM5502_IRQ_INT2_MHL, "muic-mhl" },
+};
+
+/* Define interrupt list of SM5502 to register regmap_irq */
+static const struct regmap_irq sm5502_irqs[] = {
+ /* INT1 interrupts */
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_ATTACH_MASK, },
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_DETACH_MASK, },
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_KP_MASK, },
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKP_MASK, },
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKR_MASK, },
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_EVENT_MASK, },
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OCP_EVENT_MASK, },
+ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_OCP_DIS_MASK, },
+
+ /* INT2 interrupts */
+ { .reg_offset = 1, .mask = SM5502_IRQ_INT2_VBUS_DET_MASK,},
+ { .reg_offset = 1, .mask = SM5502_IRQ_INT2_REV_ACCE_MASK, },
+ { .reg_offset = 1, .mask = SM5502_IRQ_INT2_ADC_CHG_MASK, },
+ { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_MASK, },
+ { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK, },
+ { .reg_offset = 1, .mask = SM5502_IRQ_INT2_MHL_MASK, },
+};
+
+static const struct regmap_irq_chip sm5502_muic_irq_chip = {
+ .name = "sm5502",
+ .status_base = SM5502_REG_INT1,
+ .mask_base = SM5502_REG_INTMASK1,
+ .mask_invert = false,
+ .num_regs = 2,
+ .irqs = sm5502_irqs,
+ .num_irqs = ARRAY_SIZE(sm5502_irqs),
+};
+
+/* Define regmap configuration of SM5502 for I2C communication */
+static bool sm5502_muic_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case SM5502_REG_INTMASK1:
+ case SM5502_REG_INTMASK2:
+ return true;
+ default:
+ break;
+ }
+ return false;
+}
+
+static const struct regmap_config sm5502_muic_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .volatile_reg = sm5502_muic_volatile_reg,
+ .max_register = SM5502_REG_END,
+};
+
+/* Change DM_CON/DP_CON/VBUSIN switch according to cable type */
+static int sm5502_muic_set_path(struct sm5502_muic_info *info,
+ unsigned int con_sw, unsigned int vbus_sw,
+ bool attached)
+{
+ int ret;
+
+ if (!attached) {
+ con_sw = DM_DP_SWITCH_OPEN;
+ vbus_sw = VBUSIN_SWITCH_OPEN;
+ }
+
+ switch (con_sw) {
+ case DM_DP_SWITCH_OPEN:
+ case DM_DP_SWITCH_USB:
+ case DM_DP_SWITCH_AUDIO:
+ case DM_DP_SWITCH_UART:
+ ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
+ SM5502_REG_MANUAL_SW1_DP_MASK |
+ SM5502_REG_MANUAL_SW1_DM_MASK,
+ con_sw);
+ if (ret < 0) {
+ dev_err(info->dev,
+ "cannot update DM_CON/DP_CON switch\n");
+ return ret;
+ }
+ break;
+ default:
+ dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n",
+ con_sw);
+ return -EINVAL;
+ };
+
+ switch (vbus_sw) {
+ case VBUSIN_SWITCH_OPEN:
+ case VBUSIN_SWITCH_VBUSOUT:
+ case VBUSIN_SWITCH_MIC:
+ case VBUSIN_SWITCH_VBUSOUT_WITH_USB:
+ ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
+ SM5502_REG_MANUAL_SW1_VBUSIN_MASK,
+ vbus_sw);
+ if (ret < 0) {
+ dev_err(info->dev,
+ "cannot update VBUSIN switch\n");
+ return ret;
+ }
+ break;
+ default:
+ dev_err(info->dev, "Unknown VBUS switch type (%d)\n", vbus_sw);
+ return -EINVAL;
+ };
+
+ return 0;
+}
+
+/* Return cable type of attached or detached accessories */
+static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info)
+{
+ unsigned int cable_type = -1, adc, dev_type1;
+ int ret;
+
+ /* Read ADC value according to external cable or button */
+ ret = regmap_read(info->regmap, SM5502_REG_ADC, &adc);
+ if (ret) {
+ dev_err(info->dev, "failed to read ADC register\n");
+ return ret;
+ }
+
+ /*
+ * If ADC is SM5502_MUIC_ADC_GROUND(0x0), external cable hasn't
+ * connected with to MUIC device.
+ */
+ cable_type &= SM5502_REG_ADC_MASK;
+ if (cable_type == SM5502_MUIC_ADC_GROUND)
+ return SM5502_MUIC_ADC_GROUND;
+
+ switch (cable_type) {
+ case SM5502_MUIC_ADC_GROUND:
+ case SM5502_MUIC_ADC_SEND_END_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S1_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S2_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S3_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S4_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S5_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S6_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S7_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S8_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S9_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S10_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S11_BUTTON:
+ case SM5502_MUIC_ADC_REMOTE_S12_BUTTON:
+ case SM5502_MUIC_ADC_RESERVED_ACC_1:
+ case SM5502_MUIC_ADC_RESERVED_ACC_2:
+ case SM5502_MUIC_ADC_RESERVED_ACC_3:
+ case SM5502_MUIC_ADC_RESERVED_ACC_4:
+ case SM5502_MUIC_ADC_RESERVED_ACC_5:
+ case SM5502_MUIC_ADC_AUDIO_TYPE2:
+ case SM5502_MUIC_ADC_PHONE_POWERED_DEV:
+ case SM5502_MUIC_ADC_TTY_CONVERTER:
+ case SM5502_MUIC_ADC_UART_CABLE:
+ case SM5502_MUIC_ADC_TYPE1_CHARGER:
+ case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB:
+ case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB:
+ case SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE:
+ case SM5502_MUIC_ADC_TYPE2_CHARGER:
+ case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART:
+ case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART:
+ break;
+ case SM5502_MUIC_ADC_AUDIO_TYPE1:
+ /*
+ * Check whether cable type is
+ * SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE
+ * or SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END
+ * by using Button event.
+ */
+ break;
+ case SM5502_MUIC_ADC_OPEN:
+ ret = regmap_read(info->regmap, SM5502_REG_DEV_TYPE1,
+ &dev_type1);
+ if (ret) {
+ dev_err(info->dev, "failed to read DEV_TYPE1 reg\n");
+ return ret;
+ }
+
+ switch (dev_type1) {
+ case SM5502_REG_DEV_TYPE1_USB_SDP_MASK:
+ cable_type = SM5502_MUIC_ADC_OPEN_USB;
+ break;
+ case SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK:
+ cable_type = SM5502_MUIC_ADC_OPEN_TA;
+ break;
+ case SM5502_REG_DEV_TYPE1_USB_OTG_MASK:
+ cable_type = SM5502_MUIC_ADC_OPEN_USB_OTG;
+ break;
+ default:
+ dev_dbg(info->dev,
+ "cannot identify the cable type: adc(0x%x) "
+ "dev_type1(0x%x)\n", adc, dev_type1);
+ return -EINVAL;
+ };
+ break;
+ default:
+ dev_err(info->dev,
+ "failed to identify the cable type: adc(0x%x)\n", adc);
+ return -EINVAL;
+ };
+
+ return cable_type;
+}
+
+static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
+ bool attached)
+{
+ static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND;
+ const char **cable_names = info->edev->supported_cable;
+ unsigned int cable_type = SM5502_MUIC_ADC_GROUND;
+ unsigned int con_sw = DM_DP_SWITCH_OPEN;
+ unsigned int vbus_sw = VBUSIN_SWITCH_OPEN;
+ unsigned int idx = 0;
+ int ret;
+
+ if (!cable_names)
+ return 0;
+
+ /* Get the type of attached or detached cable */
+ if (attached)
+ cable_type = sm5502_muic_get_cable_type(info);
+ else if (!attached)
+ cable_type = prev_cable_type;
+ prev_cable_type = cable_type;
+
+ switch (cable_type) {
+ case SM5502_MUIC_ADC_OPEN_USB:
+ idx = EXTCON_CABLE_USB;
+ con_sw = DM_DP_SWITCH_USB;
+ vbus_sw = VBUSIN_SWITCH_VBUSOUT_WITH_USB;
+ break;
+ case SM5502_MUIC_ADC_OPEN_TA:
+ idx = EXTCON_CABLE_TA;
+ con_sw = DM_DP_SWITCH_OPEN;
+ vbus_sw = VBUSIN_SWITCH_VBUSOUT;
+ break;
+ case SM5502_MUIC_ADC_OPEN_USB_OTG:
+ idx = EXTCON_CABLE_USB_HOST;
+ con_sw = DM_DP_SWITCH_USB;
+ vbus_sw = VBUSIN_SWITCH_OPEN;
+ break;
+ default:
+ dev_dbg(info->dev,
+ "cannot handle this cable_type (0x%x)\n", cable_type);
+ return 0;
+ };
+
+ /* Change internal hardware path(DM_CON/DP_CON, VBUSIN) */
+ ret = sm5502_muic_set_path(info, con_sw, vbus_sw, attached);
+ if (ret < 0)
+ return ret;
+
+ /* Change the state of external accessory */
+ extcon_set_cable_state(info->edev, cable_names[idx], attached);
+
+ return 0;
+}
+
+static void sm5502_muic_irq_work(struct work_struct *work)
+{
+ struct sm5502_muic_info *info = container_of(work,
+ struct sm5502_muic_info, irq_work);
+ int ret = 0;
+
+ if (!info->edev)
+ return;
+
+ mutex_lock(&info->mutex);
+
+ /* Detect attached or detached cables */
+ if (info->irq_attach) {
+ ret = sm5502_muic_cable_handler(info, true);
+ info->irq_attach = false;
+ }
+ if (info->irq_detach) {
+ ret = sm5502_muic_cable_handler(info, false);
+ info->irq_detach = false;
+ }
+
+ if (ret < 0)
+ dev_err(info->dev, "failed to handle MUIC interrupt\n");
+
+ mutex_unlock(&info->mutex);
+
+ return;
+}
+
+/*
+ * Sets irq_attach or irq_detach in sm5502_muic_info and returns 0.
+ * Returns -ESRCH if irq_type does not match registered IRQ for this dev type.
+ */
+static int sm5502_parse_irq(struct sm5502_muic_info *info, int irq_type)
+{
+ switch (irq_type) {
+ case SM5502_IRQ_INT1_ATTACH:
+ info->irq_attach = true;
+ break;
+ case SM5502_IRQ_INT1_DETACH:
+ info->irq_detach = true;
+ break;
+ case SM5502_IRQ_INT1_KP:
+ case SM5502_IRQ_INT1_LKP:
+ case SM5502_IRQ_INT1_LKR:
+ case SM5502_IRQ_INT1_OVP_EVENT:
+ case SM5502_IRQ_INT1_OCP_EVENT:
+ case SM5502_IRQ_INT1_OVP_OCP_DIS:
+ case SM5502_IRQ_INT2_VBUS_DET:
+ case SM5502_IRQ_INT2_REV_ACCE:
+ case SM5502_IRQ_INT2_ADC_CHG:
+ case SM5502_IRQ_INT2_STUCK_KEY:
+ case SM5502_IRQ_INT2_STUCK_KEY_RCV:
+ case SM5502_IRQ_INT2_MHL:
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static irqreturn_t sm5502_muic_irq_handler(int irq, void *data)
+{
+ struct sm5502_muic_info *info = data;
+ int i, irq_type = -1, ret;
+
+ for (i = 0; i < info->num_muic_irqs; i++)
+ if (irq == info->muic_irqs[i].virq)
+ irq_type = info->muic_irqs[i].irq;
+
+ ret = sm5502_parse_irq(info, irq_type);
+ if (ret < 0) {
+ dev_warn(info->dev, "cannot handle is interrupt:%d\n",
+ irq_type);
+ return IRQ_HANDLED;
+ }
+ schedule_work(&info->irq_work);
+
+ return IRQ_HANDLED;
+}
+
+static void sm5502_muic_detect_cable_wq(struct work_struct *work)
+{
+ struct sm5502_muic_info *info = container_of(to_delayed_work(work),
+ struct sm5502_muic_info, wq_detcable);
+ int ret;
+
+ /* Notify the state of connector cable or not */
+ ret = sm5502_muic_cable_handler(info, true);
+ if (ret < 0)
+ dev_warn(info->dev, "failed to detect cable state\n");
+}
+
+static void sm5502_init_dev_type(struct sm5502_muic_info *info)
+{
+ unsigned int reg_data, vendor_id, version_id;
+ int i, ret;
+
+ /* To test I2C, Print version_id and vendor_id of SM5502 */
+ ret = regmap_read(info->regmap, SM5502_REG_DEVICE_ID, &reg_data);
+ if (ret) {
+ dev_err(info->dev,
+ "failed to read DEVICE_ID register: %d\n", ret);
+ return;
+ }
+
+ vendor_id = ((reg_data & SM5502_REG_DEVICE_ID_VENDOR_MASK) >>
+ SM5502_REG_DEVICE_ID_VENDOR_SHIFT);
+ version_id = ((reg_data & SM5502_REG_DEVICE_ID_VERSION_MASK) >>
+ SM5502_REG_DEVICE_ID_VERSION_SHIFT);
+
+ dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
+ version_id, vendor_id);
+
+ /* Initiazle the register of SM5502 device to bring-up */
+ for (i = 0; i < info->num_reg_data; i++) {
+ unsigned int val = 0;
+
+ if (!info->reg_data[i].invert)
+ val |= ~info->reg_data[i].val;
+ else
+ val = info->reg_data[i].val;
+ regmap_write(info->regmap, info->reg_data[i].reg, val);
+ }
+}
+
+static int sm5022_muic_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct device_node *np = i2c->dev.of_node;
+ struct sm5502_muic_info *info;
+ int i, ret, irq_flags;
+
+ if (!np)
+ return -EINVAL;
+
+ info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ i2c_set_clientdata(i2c, info);
+
+ info->dev = &i2c->dev;
+ info->i2c = i2c;
+ info->irq = i2c->irq;
+ info->muic_irqs = sm5502_muic_irqs;
+ info->num_muic_irqs = ARRAY_SIZE(sm5502_muic_irqs);
+ info->reg_data = sm5502_reg_data;
+ info->num_reg_data = ARRAY_SIZE(sm5502_reg_data);
+
+ mutex_init(&info->mutex);
+
+ INIT_WORK(&info->irq_work, sm5502_muic_irq_work);
+
+ info->regmap = devm_regmap_init_i2c(i2c, &sm5502_muic_regmap_config);
+ if (IS_ERR(info->regmap)) {
+ ret = PTR_ERR(info->regmap);
+ dev_err(info->dev, "failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ /* Support irq domain for SM5502 MUIC device */
+ irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
+ ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0,
+ &sm5502_muic_irq_chip, &info->irq_data);
+ if (ret != 0) {
+ dev_err(info->dev, "failed to request IRQ %d: %d\n",
+ info->irq, ret);
+ return ret;
+ }
+
+ for (i = 0; i < info->num_muic_irqs; i++) {
+ struct muic_irq *muic_irq = &info->muic_irqs[i];
+ unsigned int virq = 0;
+
+ virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
+ if (virq <= 0)
+ return -EINVAL;
+ muic_irq->virq = virq;
+
+ ret = devm_request_threaded_irq(info->dev, virq, NULL,
+ sm5502_muic_irq_handler,
+ IRQF_NO_SUSPEND,
+ muic_irq->name, info);
+ if (ret) {
+ dev_err(info->dev, "failed: irq request (IRQ: %d,"
+ " error :%d)\n", muic_irq->irq, ret);
+ return ret;
+ }
+ }
+
+ /* Allocate extcon device */
+ info->edev = devm_extcon_dev_allocate(info->dev, sm5502_extcon_cable);
+ if (IS_ERR(info->edev)) {
+ dev_err(info->dev, "failed to allocate memory for extcon\n");
+ return -ENOMEM;
+ }
+ info->edev->name = np->name;
+
+ /* Register extcon device */
+ ret = devm_extcon_dev_register(info->dev, info->edev);
+ if (ret) {
+ dev_err(info->dev, "failed to register extcon device\n");
+ return ret;
+ }
+
+ /*
+ * 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, sm5502_muic_detect_cable_wq);
+ queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
+ msecs_to_jiffies(DELAY_MS_DEFAULT));
+
+ /* Initialize SM5502 device and print vendor id and version id */
+ sm5502_init_dev_type(info);
+
+ return 0;
+}
+
+static int sm5502_muic_i2c_remove(struct i2c_client *i2c)
+{
+ struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
+
+ regmap_del_irq_chip(info->irq, info->irq_data);
+
+ return 0;
+}
+
+static struct of_device_id sm5502_dt_match[] = {
+ { .compatible = "siliconmitus,sm5502-muic" },
+ { },
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int sm5502_muic_suspend(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
+
+ enable_irq_wake(info->irq);
+
+ return 0;
+}
+
+static int sm5502_muic_resume(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
+
+ disable_irq_wake(info->irq);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sm5502_muic_pm_ops,
+ sm5502_muic_suspend, sm5502_muic_resume);
+
+static const struct i2c_device_id sm5502_i2c_id[] = {
+ { "sm5502", TYPE_SM5502 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sm5502_i2c_id);
+
+static struct i2c_driver sm5502_muic_i2c_driver = {
+ .driver = {
+ .name = "sm5502",
+ .owner = THIS_MODULE,
+ .pm = &sm5502_muic_pm_ops,
+ .of_match_table = sm5502_dt_match,
+ },
+ .probe = sm5022_muic_i2c_probe,
+ .remove = sm5502_muic_i2c_remove,
+ .id_table = sm5502_i2c_id,
+};
+
+static int __init sm5502_muic_i2c_init(void)
+{
+ return i2c_add_driver(&sm5502_muic_i2c_driver);
+}
+subsys_initcall(sm5502_muic_i2c_init);
+
+MODULE_DESCRIPTION("Silicon Mitus SM5502 Extcon driver");
+MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-13 11:56:15 +0000