* in identical fashion. The delay_on/delay_off values of the last LED
* that is set to blink will be used for all of the blinking LEDs.
* Hardware blinking is disabled by default but can be enabled by setting
- * the 'blink_type' member in the platform_data struct to 'PCA9633_HW_BLINK'
+ * the 'blink_type' member in the platform_data struct to 'PCA963X_HW_BLINK'
* or by adding the 'nxp,hw-blink' property to the DTS.
*/
#include <linux/workqueue.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/platform_data/leds-pca9633.h>
+#include <linux/platform_data/leds-pca963x.h>
/* LED select registers determine the source that drives LED outputs */
-#define PCA9633_LED_OFF 0x0 /* LED driver off */
-#define PCA9633_LED_ON 0x1 /* LED driver on */
-#define PCA9633_LED_PWM 0x2 /* Controlled through PWM */
-#define PCA9633_LED_GRP_PWM 0x3 /* Controlled through PWM/GRPPWM */
+#define PCA963X_LED_OFF 0x0 /* LED driver off */
+#define PCA963X_LED_ON 0x1 /* LED driver on */
+#define PCA963X_LED_PWM 0x2 /* Controlled through PWM */
+#define PCA963X_LED_GRP_PWM 0x3 /* Controlled through PWM/GRPPWM */
-#define PCA9633_MODE2_DMBLNK 0x20 /* Enable blinking */
+#define PCA963X_MODE2_DMBLNK 0x20 /* Enable blinking */
-#define PCA9633_MODE1 0x00
-#define PCA9633_MODE2 0x01
-#define PCA9633_PWM_BASE 0x02
+#define PCA963X_MODE1 0x00
+#define PCA963X_MODE2 0x01
+#define PCA963X_PWM_BASE 0x02
-enum pca9633_type {
+enum pca963x_type {
pca9633,
pca9634,
};
-struct pca9633_chipdef {
+struct pca963x_chipdef {
u8 grppwm;
u8 grpfreq;
u8 ledout_base;
int n_leds;
};
-static struct pca9633_chipdef pca9633_chipdefs[] = {
+static struct pca963x_chipdef pca963x_chipdefs[] = {
[pca9633] = {
.grppwm = 0x6,
.grpfreq = 0x7,
};
/* Total blink period in milliseconds */
-#define PCA9632_BLINK_PERIOD_MIN 42
-#define PCA9632_BLINK_PERIOD_MAX 10667
+#define PCA963X_BLINK_PERIOD_MIN 42
+#define PCA963X_BLINK_PERIOD_MAX 10667
-static const struct i2c_device_id pca9633_id[] = {
+static const struct i2c_device_id pca963x_id[] = {
{ "pca9632", pca9633 },
{ "pca9633", pca9633 },
{ "pca9634", pca9634 },
{ }
};
-MODULE_DEVICE_TABLE(i2c, pca9633_id);
+MODULE_DEVICE_TABLE(i2c, pca963x_id);
-enum pca9633_cmd {
+enum pca963x_cmd {
BRIGHTNESS_SET,
BLINK_SET,
};
-struct pca9633_led;
+struct pca963x_led;
-struct pca9633 {
- struct pca9633_chipdef *chipdef;
+struct pca963x {
+ struct pca963x_chipdef *chipdef;
struct mutex mutex;
struct i2c_client *client;
- struct pca9633_led *leds;
+ struct pca963x_led *leds;
};
-struct pca9633_led {
- struct pca9633 *chip;
+struct pca963x_led {
+ struct pca963x *chip;
struct work_struct work;
enum led_brightness brightness;
struct led_classdev led_cdev;
int led_num; /* 0 .. 7 potentially */
- enum pca9633_cmd cmd;
+ enum pca963x_cmd cmd;
char name[32];
u8 gdc;
u8 gfrq;
};
-static void pca9633_brightness_work(struct pca9633_led *pca9633)
+static void pca963x_brightness_work(struct pca963x_led *pca963x)
{
- u8 ledout_addr = pca9633->chip->chipdef->ledout_base
- + (pca9633->led_num / 4);
+ u8 ledout_addr = pca963x->chip->chipdef->ledout_base
+ + (pca963x->led_num / 4);
u8 ledout;
- int shift = 2 * (pca9633->led_num % 4);
+ int shift = 2 * (pca963x->led_num % 4);
u8 mask = 0x3 << shift;
- mutex_lock(&pca9633->chip->mutex);
- ledout = i2c_smbus_read_byte_data(pca9633->chip->client, ledout_addr);
- switch (pca9633->brightness) {
+ mutex_lock(&pca963x->chip->mutex);
+ ledout = i2c_smbus_read_byte_data(pca963x->chip->client, ledout_addr);
+ switch (pca963x->brightness) {
case LED_FULL:
- i2c_smbus_write_byte_data(pca9633->chip->client, ledout_addr,
- (ledout & ~mask) | (PCA9633_LED_ON << shift));
+ i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr,
+ (ledout & ~mask) | (PCA963X_LED_ON << shift));
break;
case LED_OFF:
- i2c_smbus_write_byte_data(pca9633->chip->client, ledout_addr,
+ i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr,
ledout & ~mask);
break;
default:
- i2c_smbus_write_byte_data(pca9633->chip->client,
- PCA9633_PWM_BASE + pca9633->led_num,
- pca9633->brightness);
- i2c_smbus_write_byte_data(pca9633->chip->client, ledout_addr,
- (ledout & ~mask) | (PCA9633_LED_PWM << shift));
+ i2c_smbus_write_byte_data(pca963x->chip->client,
+ PCA963X_PWM_BASE + pca963x->led_num,
+ pca963x->brightness);
+ i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr,
+ (ledout & ~mask) | (PCA963X_LED_PWM << shift));
break;
}
- mutex_unlock(&pca9633->chip->mutex);
+ mutex_unlock(&pca963x->chip->mutex);
}
-static void pca9633_blink_work(struct pca9633_led *pca9633)
+static void pca963x_blink_work(struct pca963x_led *pca963x)
{
- u8 ledout_addr = pca9633->chip->chipdef->ledout_base +
- (pca9633->led_num / 4);
+ u8 ledout_addr = pca963x->chip->chipdef->ledout_base +
+ (pca963x->led_num / 4);
u8 ledout;
- u8 mode2 = i2c_smbus_read_byte_data(pca9633->chip->client,
- PCA9633_MODE2);
- int shift = 2 * (pca9633->led_num % 4);
+ u8 mode2 = i2c_smbus_read_byte_data(pca963x->chip->client,
+ PCA963X_MODE2);
+ int shift = 2 * (pca963x->led_num % 4);
u8 mask = 0x3 << shift;
- i2c_smbus_write_byte_data(pca9633->chip->client,
- pca9633->chip->chipdef->grppwm, pca9633->gdc);
+ i2c_smbus_write_byte_data(pca963x->chip->client,
+ pca963x->chip->chipdef->grppwm, pca963x->gdc);
- i2c_smbus_write_byte_data(pca9633->chip->client,
- pca9633->chip->chipdef->grpfreq, pca9633->gfrq);
+ i2c_smbus_write_byte_data(pca963x->chip->client,
+ pca963x->chip->chipdef->grpfreq, pca963x->gfrq);
- if (!(mode2 & PCA9633_MODE2_DMBLNK))
- i2c_smbus_write_byte_data(pca9633->chip->client, PCA9633_MODE2,
- mode2 | PCA9633_MODE2_DMBLNK);
+ if (!(mode2 & PCA963X_MODE2_DMBLNK))
+ i2c_smbus_write_byte_data(pca963x->chip->client, PCA963X_MODE2,
+ mode2 | PCA963X_MODE2_DMBLNK);
- mutex_lock(&pca9633->chip->mutex);
- ledout = i2c_smbus_read_byte_data(pca9633->chip->client, ledout_addr);
- if ((ledout & mask) != (PCA9633_LED_GRP_PWM << shift))
- i2c_smbus_write_byte_data(pca9633->chip->client, ledout_addr,
- (ledout & ~mask) | (PCA9633_LED_GRP_PWM << shift));
- mutex_unlock(&pca9633->chip->mutex);
+ mutex_lock(&pca963x->chip->mutex);
+ ledout = i2c_smbus_read_byte_data(pca963x->chip->client, ledout_addr);
+ if ((ledout & mask) != (PCA963X_LED_GRP_PWM << shift))
+ i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr,
+ (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift));
+ mutex_unlock(&pca963x->chip->mutex);
}
-static void pca9633_work(struct work_struct *work)
+static void pca963x_work(struct work_struct *work)
{
- struct pca9633_led *pca9633 = container_of(work,
- struct pca9633_led, work);
+ struct pca963x_led *pca963x = container_of(work,
+ struct pca963x_led, work);
- switch (pca9633->cmd) {
+ switch (pca963x->cmd) {
case BRIGHTNESS_SET:
- pca9633_brightness_work(pca9633);
+ pca963x_brightness_work(pca963x);
break;
case BLINK_SET:
- pca9633_blink_work(pca9633);
+ pca963x_blink_work(pca963x);
break;
}
}
-static void pca9633_led_set(struct led_classdev *led_cdev,
+static void pca963x_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
- struct pca9633_led *pca9633;
+ struct pca963x_led *pca963x;
- pca9633 = container_of(led_cdev, struct pca9633_led, led_cdev);
+ pca963x = container_of(led_cdev, struct pca963x_led, led_cdev);
- pca9633->cmd = BRIGHTNESS_SET;
- pca9633->brightness = value;
+ pca963x->cmd = BRIGHTNESS_SET;
+ pca963x->brightness = value;
/*
* Must use workqueue for the actual I/O since I2C operations
* can sleep.
*/
- schedule_work(&pca9633->work);
+ schedule_work(&pca963x->work);
}
-static int pca9633_blink_set(struct led_classdev *led_cdev,
+static int pca963x_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on, unsigned long *delay_off)
{
- struct pca9633_led *pca9633;
+ struct pca963x_led *pca963x;
unsigned long time_on, time_off, period;
u8 gdc, gfrq;
- pca9633 = container_of(led_cdev, struct pca9633_led, led_cdev);
+ pca963x = container_of(led_cdev, struct pca963x_led, led_cdev);
time_on = *delay_on;
time_off = *delay_off;
period = time_on + time_off;
/* If period not supported by hardware, default to someting sane. */
- if ((period < PCA9632_BLINK_PERIOD_MIN) ||
- (period > PCA9632_BLINK_PERIOD_MAX)) {
+ if ((period < PCA963X_BLINK_PERIOD_MIN) ||
+ (period > PCA963X_BLINK_PERIOD_MAX)) {
time_on = 500;
time_off = 500;
period = time_on + time_off;
*/
gfrq = (period * 24 / 1000) - 1;
- pca9633->cmd = BLINK_SET;
- pca9633->gdc = gdc;
- pca9633->gfrq = gfrq;
+ pca963x->cmd = BLINK_SET;
+ pca963x->gdc = gdc;
+ pca963x->gfrq = gfrq;
/*
* Must use workqueue for the actual I/O since I2C operations
* can sleep.
*/
- schedule_work(&pca9633->work);
+ schedule_work(&pca963x->work);
*delay_on = time_on;
*delay_off = time_off;
}
#if IS_ENABLED(CONFIG_OF)
-static struct pca9633_platform_data *
-pca9633_dt_init(struct i2c_client *client, struct pca9633_chipdef *chip)
+static struct pca963x_platform_data *
+pca963x_dt_init(struct i2c_client *client, struct pca963x_chipdef *chip)
{
struct device_node *np = client->dev.of_node, *child;
- struct pca9633_platform_data *pdata;
- struct led_info *pca9633_leds;
+ struct pca963x_platform_data *pdata;
+ struct led_info *pca963x_leds;
int count;
count = of_get_child_count(np);
if (!count || count > chip->n_leds)
return ERR_PTR(-ENODEV);
- pca9633_leds = devm_kzalloc(&client->dev,
+ pca963x_leds = devm_kzalloc(&client->dev,
sizeof(struct led_info) * chip->n_leds, GFP_KERNEL);
- if (!pca9633_leds)
+ if (!pca963x_leds)
return ERR_PTR(-ENOMEM);
for_each_child_of_node(np, child) {
res = of_property_read_u32(child, "reg", ®);
if (res != 0)
continue;
- pca9633_leds[reg] = led;
+ pca963x_leds[reg] = led;
}
pdata = devm_kzalloc(&client->dev,
- sizeof(struct pca9633_platform_data), GFP_KERNEL);
+ sizeof(struct pca963x_platform_data), GFP_KERNEL);
if (!pdata)
return ERR_PTR(-ENOMEM);
- pdata->leds.leds = pca9633_leds;
+ pdata->leds.leds = pca963x_leds;
pdata->leds.num_leds = count;
/* default to open-drain unless totem pole (push-pull) is specified */
if (of_property_read_bool(np, "nxp,totem-pole"))
- pdata->outdrv = PCA9633_TOTEM_POLE;
+ pdata->outdrv = PCA963X_TOTEM_POLE;
else
- pdata->outdrv = PCA9633_OPEN_DRAIN;
+ pdata->outdrv = PCA963X_OPEN_DRAIN;
/* default to software blinking unless hardware blinking is specified */
if (of_property_read_bool(np, "nxp,hw-blink"))
- pdata->blink_type = PCA9633_HW_BLINK;
+ pdata->blink_type = PCA963X_HW_BLINK;
else
- pdata->blink_type = PCA9633_SW_BLINK;
+ pdata->blink_type = PCA963X_SW_BLINK;
return pdata;
}
-static const struct of_device_id of_pca9633_match[] = {
+static const struct of_device_id of_pca963x_match[] = {
{ .compatible = "nxp,pca9632", },
{ .compatible = "nxp,pca9633", },
{ .compatible = "nxp,pca9634", },
{},
};
#else
-static struct pca9633_platform_data *
-pca9633_dt_init(struct i2c_client *client, struct pca9633_chipdef *chip)
+static struct pca963x_platform_data *
+pca963x_dt_init(struct i2c_client *client, struct pca963x_chipdef *chip)
{
return ERR_PTR(-ENODEV);
}
#endif
-static int pca9633_probe(struct i2c_client *client,
+static int pca963x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- struct pca9633 *pca9633_chip;
- struct pca9633_led *pca9633;
- struct pca9633_platform_data *pdata;
- struct pca9633_chipdef *chip;
+ struct pca963x *pca963x_chip;
+ struct pca963x_led *pca963x;
+ struct pca963x_platform_data *pdata;
+ struct pca963x_chipdef *chip;
int i, err;
- chip = &pca9633_chipdefs[id->driver_data];
+ chip = &pca963x_chipdefs[id->driver_data];
pdata = dev_get_platdata(&client->dev);
if (!pdata) {
- pdata = pca9633_dt_init(client, chip);
+ pdata = pca963x_dt_init(client, chip);
if (IS_ERR(pdata)) {
dev_warn(&client->dev, "could not parse configuration\n");
pdata = NULL;
return -EINVAL;
}
- pca9633_chip = devm_kzalloc(&client->dev, sizeof(*pca9633_chip),
+ pca963x_chip = devm_kzalloc(&client->dev, sizeof(*pca963x_chip),
GFP_KERNEL);
- if (!pca9633_chip)
+ if (!pca963x_chip)
return -ENOMEM;
- pca9633 = devm_kzalloc(&client->dev, chip->n_leds * sizeof(*pca9633),
+ pca963x = devm_kzalloc(&client->dev, chip->n_leds * sizeof(*pca963x),
GFP_KERNEL);
- if (!pca9633)
+ if (!pca963x)
return -ENOMEM;
- i2c_set_clientdata(client, pca9633_chip);
+ i2c_set_clientdata(client, pca963x_chip);
- mutex_init(&pca9633_chip->mutex);
- pca9633_chip->chipdef = chip;
- pca9633_chip->client = client;
- pca9633_chip->leds = pca9633;
+ mutex_init(&pca963x_chip->mutex);
+ pca963x_chip->chipdef = chip;
+ pca963x_chip->client = client;
+ pca963x_chip->leds = pca963x;
/* Turn off LEDs by default*/
i2c_smbus_write_byte_data(client, chip->ledout_base, 0x00);
i2c_smbus_write_byte_data(client, chip->ledout_base + 1, 0x00);
for (i = 0; i < chip->n_leds; i++) {
- pca9633[i].led_num = i;
- pca9633[i].chip = pca9633_chip;
+ pca963x[i].led_num = i;
+ pca963x[i].chip = pca963x_chip;
/* Platform data can specify LED names and default triggers */
if (pdata && i < pdata->leds.num_leds) {
if (pdata->leds.leds[i].name)
- snprintf(pca9633[i].name,
- sizeof(pca9633[i].name), "pca9633:%s",
+ snprintf(pca963x[i].name,
+ sizeof(pca963x[i].name), "pca963x:%s",
pdata->leds.leds[i].name);
if (pdata->leds.leds[i].default_trigger)
- pca9633[i].led_cdev.default_trigger =
+ pca963x[i].led_cdev.default_trigger =
pdata->leds.leds[i].default_trigger;
}
if (!pdata || i >= pdata->leds.num_leds ||
!pdata->leds.leds[i].name)
- snprintf(pca9633[i].name, sizeof(pca9633[i].name),
- "pca9633:%d:%.2x:%d", client->adapter->nr,
+ snprintf(pca963x[i].name, sizeof(pca963x[i].name),
+ "pca963x:%d:%.2x:%d", client->adapter->nr,
client->addr, i);
- pca9633[i].led_cdev.name = pca9633[i].name;
- pca9633[i].led_cdev.brightness_set = pca9633_led_set;
+ pca963x[i].led_cdev.name = pca963x[i].name;
+ pca963x[i].led_cdev.brightness_set = pca963x_led_set;
- if (pdata && pdata->blink_type == PCA9633_HW_BLINK)
- pca9633[i].led_cdev.blink_set = pca9633_blink_set;
+ if (pdata && pdata->blink_type == PCA963X_HW_BLINK)
+ pca963x[i].led_cdev.blink_set = pca963x_blink_set;
- INIT_WORK(&pca9633[i].work, pca9633_work);
+ INIT_WORK(&pca963x[i].work, pca963x_work);
- err = led_classdev_register(&client->dev, &pca9633[i].led_cdev);
+ err = led_classdev_register(&client->dev, &pca963x[i].led_cdev);
if (err < 0)
goto exit;
}
/* Disable LED all-call address and set normal mode */
- i2c_smbus_write_byte_data(client, PCA9633_MODE1, 0x00);
+ i2c_smbus_write_byte_data(client, PCA963X_MODE1, 0x00);
/* Configure output: open-drain or totem pole (push-pull) */
- if (pdata && pdata->outdrv == PCA9633_OPEN_DRAIN)
- i2c_smbus_write_byte_data(client, PCA9633_MODE2, 0x01);
+ if (pdata && pdata->outdrv == PCA963X_OPEN_DRAIN)
+ i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x01);
return 0;
exit:
while (i--) {
- led_classdev_unregister(&pca9633[i].led_cdev);
- cancel_work_sync(&pca9633[i].work);
+ led_classdev_unregister(&pca963x[i].led_cdev);
+ cancel_work_sync(&pca963x[i].work);
}
return err;
}
-static int pca9633_remove(struct i2c_client *client)
+static int pca963x_remove(struct i2c_client *client)
{
- struct pca9633 *pca9633 = i2c_get_clientdata(client);
+ struct pca963x *pca963x = i2c_get_clientdata(client);
int i;
- for (i = 0; i < pca9633->chipdef->n_leds; i++) {
- led_classdev_unregister(&pca9633->leds[i].led_cdev);
- cancel_work_sync(&pca9633->leds[i].work);
+ for (i = 0; i < pca963x->chipdef->n_leds; i++) {
+ led_classdev_unregister(&pca963x->leds[i].led_cdev);
+ cancel_work_sync(&pca963x->leds[i].work);
}
return 0;
}
-static struct i2c_driver pca9633_driver = {
+static struct i2c_driver pca963x_driver = {
.driver = {
- .name = "leds-pca9633",
+ .name = "leds-pca963x",
.owner = THIS_MODULE,
- .of_match_table = of_match_ptr(of_pca9633_match),
+ .of_match_table = of_match_ptr(of_pca963x_match),
},
- .probe = pca9633_probe,
- .remove = pca9633_remove,
- .id_table = pca9633_id,
+ .probe = pca963x_probe,
+ .remove = pca963x_remove,
+ .id_table = pca963x_id,
};
-module_i2c_driver(pca9633_driver);
+module_i2c_driver(pca963x_driver);
MODULE_AUTHOR("Peter Meerwald <p.meerwald@bct-electronic.com>");
-MODULE_DESCRIPTION("PCA9633 LED driver");
+MODULE_DESCRIPTION("PCA963X LED driver");
MODULE_LICENSE("GPL v2");
git.samba.org / sfrench / cifs-2.6.git / commitdiff