static int blinkm_test_run(struct i2c_client *client)
{
int ret;
struct blinkm_data *data = i2c_get_clientdata(client);
data->next_red = 0x01;
data->next_green = 0x05;
data->next_blue = 0x10;
ret = blinkm_transfer_hw(client, BLM_GO_RGB);
if (ret < 0)
return ret;
msleep(2000);
data->next_red = 0x25;
data->next_green = 0x10;
data->next_blue = 0x31;
ret = blinkm_transfer_hw(client, BLM_FADE_RGB);
if (ret < 0)
return ret;
msleep(2000);
data->next_hue = 0x50;
data->next_saturation = 0x10;
data->next_brightness = 0x20;
ret = blinkm_transfer_hw(client, BLM_FADE_HSB);
if (ret < 0)
return ret;
msleep(2000);
return 0;
}
static ssize_t show_color_common(struct device *dev, char *buf, int color)
{
struct i2c_client *client;
struct blinkm_data *data;
int ret;
client = to_i2c_client(dev);
data = i2c_get_clientdata(client);
ret = blinkm_transfer_hw(client, BLM_GET_CUR_RGB);
if (ret < 0)
return ret;
switch (color) {
case RED:
return scnprintf(buf, PAGE_SIZE, "%02X\n", data->red);
break;
case GREEN:
return scnprintf(buf, PAGE_SIZE, "%02X\n", data->green);
break;
case BLUE:
return scnprintf(buf, PAGE_SIZE, "%02X\n", data->blue);
break;
default:
return -EINVAL;
}
return -EINVAL;
}
static int __devexit blinkm_remove(struct i2c_client *client)
{
struct blinkm_data *data = i2c_get_clientdata(client);
int ret = 0;
int i;
/* make sure no workqueue entries are pending */
for (i = 0; i < 3; i++) {
flush_scheduled_work();
led_classdev_unregister(&data->blinkm_leds[i].led_cdev);
}
/* reset rgb */
data->next_red = 0x00;
data->next_green = 0x00;
data->next_blue = 0x00;
ret = blinkm_transfer_hw(client, BLM_FADE_RGB);
if (ret < 0)
dev_err(&client->dev, "Failure in blinkm_remove ignored. Continuing.\n");
/* reset hsb */
data->next_hue = 0x00;
data->next_saturation = 0x00;
data->next_brightness = 0x00;
ret = blinkm_transfer_hw(client, BLM_FADE_HSB);
if (ret < 0)
dev_err(&client->dev, "Failure in blinkm_remove ignored. Continuing.\n");
/* red fade to off */
data->next_red = 0xff;
ret = blinkm_transfer_hw(client, BLM_GO_RGB);
if (ret < 0)
dev_err(&client->dev, "Failure in blinkm_remove ignored. Continuing.\n");
/* off */
data->next_red = 0x00;
ret = blinkm_transfer_hw(client, BLM_FADE_RGB);
if (ret < 0)
dev_err(&client->dev, "Failure in blinkm_remove ignored. Continuing.\n");
sysfs_remove_group(&client->dev.kobj, &blinkm_group);
return 0;
}
static void led_work(struct work_struct *work)
{
int ret;
struct blinkm_led *led;
struct blinkm_data *data ;
struct blinkm_work *blm_work = work_to_blmwork(work);
led = blm_work->blinkm_led;
data = i2c_get_clientdata(led->i2c_client);
ret = blinkm_transfer_hw(led->i2c_client, BLM_GO_RGB);
atomic_dec(&led->active);
dev_dbg(&led->i2c_client->dev,
"# DONE # next_red = %d, next_green = %d,"
" next_blue = %d, active = %d\n",
data->next_red, data->next_green,
data->next_blue, atomic_read(&led->active));
kfree(blm_work);
}
static int store_color_common(struct device *dev, const char *buf, int color)
{
struct i2c_client *client;
struct blinkm_data *data;
int ret;
u8 value;
client = to_i2c_client(dev);
data = i2c_get_clientdata(client);
ret = kstrtou8(buf, 10, &value);
if (ret < 0) {
dev_err(dev, "BlinkM: value too large!\n");
return ret;
}
switch (color) {
case RED:
data->next_red = value;
break;
case GREEN:
data->next_green = value;
break;
case BLUE:
data->next_blue = value;
break;
default:
return -EINVAL;
}
dev_dbg(dev, "next_red = %d, next_green = %d, next_blue = %d\n",
data->next_red, data->next_green, data->next_blue);
/* if mode ... */
ret = blinkm_transfer_hw(client, BLM_GO_RGB);
if (ret < 0) {
dev_err(dev, "BlinkM: can't set RGB\n");
return ret;
}
return 0;
}
static int blinkm_led_common_set(struct led_classdev *led_cdev,
enum led_brightness value, int color)
{
/* led_brightness is 0, 127 or 255 - we just use it here as-is */
struct blinkm_led *led = cdev_to_blmled(led_cdev);
struct blinkm_data *data = i2c_get_clientdata(led->i2c_client);
switch (color) {
case RED:
/* bail out if there's no change */
if (data->next_red == (u8) value)
return 0;
data->next_red = (u8) value;
break;
case GREEN:
/* bail out if there's no change */
if (data->next_green == (u8) value)
return 0;
data->next_green = (u8) value;
break;
case BLUE:
/* bail out if there's no change */
if (data->next_blue == (u8) value)
return 0;
data->next_blue = (u8) value;
break;
default:
dev_err(&led->i2c_client->dev, "BlinkM: unknown color.\n");
return -EINVAL;
}
blinkm_transfer_hw(led->i2c_client, BLM_GO_RGB);
dev_dbg(&led->i2c_client->dev,
"# DONE # next_red = %d, next_green = %d,"
" next_blue = %d\n",
data->next_red, data->next_green,
data->next_blue);
return 0;
}
static void blinkm_init_hw(struct i2c_client *client)
{
int ret;
ret = blinkm_transfer_hw(client, BLM_STOP_SCRIPT);
ret = blinkm_transfer_hw(client, BLM_GO_RGB);
}