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path: root/drivers/leds/leds-lp5521.c
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Diffstat (limited to 'drivers/leds/leds-lp5521.c')
-rw-r--r--drivers/leds/leds-lp5521.c118
1 files changed, 103 insertions, 15 deletions
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 1392feb1bcf7..05188351711d 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -220,17 +220,11 @@ static int lp5521_update_program_memory(struct lp55xx_chip *chip,
};
unsigned cmd;
char c[3];
- int program_size;
int nrchars;
- int offset = 0;
int ret;
- int i;
-
- /* clear program memory before updating */
- for (i = 0; i < LP5521_PROGRAM_LENGTH; i++)
- lp55xx_write(chip, addr[idx] + i, 0);
+ int offset = 0;
+ int i = 0;
- i = 0;
while ((offset < size - 1) && (i < LP5521_PROGRAM_LENGTH)) {
/* separate sscanfs because length is working only for %s */
ret = sscanf(data + offset, "%2s%n ", c, &nrchars);
@@ -250,11 +244,19 @@ static int lp5521_update_program_memory(struct lp55xx_chip *chip,
if (i % 2)
goto err;
- program_size = i;
- for (i = 0; i < program_size; i++)
- lp55xx_write(chip, addr[idx] + i, pattern[i]);
+ mutex_lock(&chip->lock);
- return 0;
+ for (i = 0; i < LP5521_PROGRAM_LENGTH; i++) {
+ ret = lp55xx_write(chip, addr[idx] + i, pattern[i]);
+ if (ret) {
+ mutex_unlock(&chip->lock);
+ return -EINVAL;
+ }
+ }
+
+ mutex_unlock(&chip->lock);
+
+ return size;
err:
dev_err(&chip->cl->dev, "wrong pattern format\n");
@@ -365,6 +367,80 @@ static void lp5521_led_brightness_work(struct work_struct *work)
mutex_unlock(&chip->lock);
}
+static ssize_t show_engine_mode(struct device *dev,
+ struct device_attribute *attr,
+ char *buf, int nr)
+{
+ struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
+ struct lp55xx_chip *chip = led->chip;
+ enum lp55xx_engine_mode mode = chip->engines[nr - 1].mode;
+
+ switch (mode) {
+ case LP55XX_ENGINE_RUN:
+ return sprintf(buf, "run\n");
+ case LP55XX_ENGINE_LOAD:
+ return sprintf(buf, "load\n");
+ case LP55XX_ENGINE_DISABLED:
+ default:
+ return sprintf(buf, "disabled\n");
+ }
+}
+show_mode(1)
+show_mode(2)
+show_mode(3)
+
+static ssize_t store_engine_mode(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len, int nr)
+{
+ struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
+ struct lp55xx_chip *chip = led->chip;
+ struct lp55xx_engine *engine = &chip->engines[nr - 1];
+
+ mutex_lock(&chip->lock);
+
+ chip->engine_idx = nr;
+
+ if (!strncmp(buf, "run", 3)) {
+ lp5521_run_engine(chip, true);
+ engine->mode = LP55XX_ENGINE_RUN;
+ } else if (!strncmp(buf, "load", 4)) {
+ lp5521_stop_engine(chip);
+ lp5521_load_engine(chip);
+ engine->mode = LP55XX_ENGINE_LOAD;
+ } else if (!strncmp(buf, "disabled", 8)) {
+ lp5521_stop_engine(chip);
+ engine->mode = LP55XX_ENGINE_DISABLED;
+ }
+
+ mutex_unlock(&chip->lock);
+
+ return len;
+}
+store_mode(1)
+store_mode(2)
+store_mode(3)
+
+static ssize_t store_engine_load(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len, int nr)
+{
+ struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
+ struct lp55xx_chip *chip = led->chip;
+
+ mutex_lock(&chip->lock);
+
+ chip->engine_idx = nr;
+ lp5521_load_engine(chip);
+
+ mutex_unlock(&chip->lock);
+
+ return lp5521_update_program_memory(chip, buf, len);
+}
+store_load(1)
+store_load(2)
+store_load(3)
+
static ssize_t lp5521_selftest(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -381,9 +457,21 @@ static ssize_t lp5521_selftest(struct device *dev,
}
/* device attributes */
-static DEVICE_ATTR(selftest, S_IRUGO, lp5521_selftest, NULL);
+static LP55XX_DEV_ATTR_RW(engine1_mode, show_engine1_mode, store_engine1_mode);
+static LP55XX_DEV_ATTR_RW(engine2_mode, show_engine2_mode, store_engine2_mode);
+static LP55XX_DEV_ATTR_RW(engine3_mode, show_engine3_mode, store_engine3_mode);
+static LP55XX_DEV_ATTR_WO(engine1_load, store_engine1_load);
+static LP55XX_DEV_ATTR_WO(engine2_load, store_engine2_load);
+static LP55XX_DEV_ATTR_WO(engine3_load, store_engine3_load);
+static LP55XX_DEV_ATTR_RO(selftest, lp5521_selftest);
static struct attribute *lp5521_attributes[] = {
+ &dev_attr_engine1_mode.attr,
+ &dev_attr_engine2_mode.attr,
+ &dev_attr_engine3_mode.attr,
+ &dev_attr_engine1_load.attr,
+ &dev_attr_engine2_load.attr,
+ &dev_attr_engine3_load.attr,
&dev_attr_selftest.attr,
NULL
};
@@ -420,7 +508,7 @@ static int lp5521_probe(struct i2c_client *client,
struct lp55xx_platform_data *pdata;
struct device_node *np = client->dev.of_node;
- if (!client->dev.platform_data) {
+ if (!dev_get_platdata(&client->dev)) {
if (np) {
ret = lp55xx_of_populate_pdata(&client->dev, np);
if (ret < 0)
@@ -430,7 +518,7 @@ static int lp5521_probe(struct i2c_client *client,
return -EINVAL;
}
}
- pdata = client->dev.platform_data;
+ pdata = dev_get_platdata(&client->dev);
chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)