leds: lp5523: add master_fader support
This patch introduces 4 new attributes: master_fader_leds master_fader1 master_fader2 master_fader3 Fo example, to map channel 0,6 to master_fader1, map channel 1,7 to master_fader2, map channel 2,8 to master_fader3, and map channel 3,4,5 to none echo "123000123" > master_fader_leds A different factor can be set to each master_fader: echo 255 > master_fader1 echo 100 > master_fader2 echo 0 > master_fader3 Signed-off-by: Toshi Kikuchi <toshik@chromium.org> Acked-by: Milo Kim <milo.kim@ti.com> Tested-by: Milo Kim <milo.kim@ti.com> Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Toshi Kikuchi
Bryan Wu
Родитель
9ab1963d83
Коммит
52da81eafa
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@ -50,6 +50,7 @@
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#define LP5523_REG_OP_MODE 0x01
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#define LP5523_REG_ENABLE_LEDS_MSB 0x04
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#define LP5523_REG_ENABLE_LEDS_LSB 0x05
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#define LP5523_REG_LED_CTRL_BASE 0x06
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#define LP5523_REG_LED_PWM_BASE 0x16
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#define LP5523_REG_LED_CURRENT_BASE 0x26
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#define LP5523_REG_CONFIG 0x36
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@ -57,6 +58,7 @@
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#define LP5523_REG_RESET 0x3D
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#define LP5523_REG_LED_TEST_CTRL 0x41
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#define LP5523_REG_LED_TEST_ADC 0x42
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#define LP5523_REG_MASTER_FADER_BASE 0x48
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#define LP5523_REG_CH1_PROG_START 0x4C
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#define LP5523_REG_CH2_PROG_START 0x4D
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#define LP5523_REG_CH3_PROG_START 0x4E
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@ -78,6 +80,9 @@
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#define LP5523_EXT_CLK_USED 0x08
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#define LP5523_ENG_STATUS_MASK 0x07
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#define LP5523_FADER_MAPPING_MASK 0xC0
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#define LP5523_FADER_MAPPING_SHIFT 6
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/* Memory Page Selection */
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#define LP5523_PAGE_ENG1 0
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#define LP5523_PAGE_ENG2 1
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@ -666,6 +671,137 @@ release_lock:
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return pos;
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}
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#define show_fader(nr) \
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static ssize_t show_master_fader##nr(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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return show_master_fader(dev, attr, buf, nr); \
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}
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#define store_fader(nr) \
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static ssize_t store_master_fader##nr(struct device *dev, \
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struct device_attribute *attr, \
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const char *buf, size_t len) \
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{ \
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return store_master_fader(dev, attr, buf, len, nr); \
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}
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static ssize_t show_master_fader(struct device *dev,
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struct device_attribute *attr,
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char *buf, int nr)
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{
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struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
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struct lp55xx_chip *chip = led->chip;
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int ret;
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u8 val;
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mutex_lock(&chip->lock);
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ret = lp55xx_read(chip, LP5523_REG_MASTER_FADER_BASE + nr - 1, &val);
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mutex_unlock(&chip->lock);
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if (ret == 0)
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ret = sprintf(buf, "%u\n", val);
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return ret;
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}
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show_fader(1)
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show_fader(2)
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show_fader(3)
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static ssize_t store_master_fader(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t len, int nr)
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{
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struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
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struct lp55xx_chip *chip = led->chip;
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int ret;
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unsigned long val;
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if (kstrtoul(buf, 0, &val))
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return -EINVAL;
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if (val > 0xff)
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return -EINVAL;
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mutex_lock(&chip->lock);
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ret = lp55xx_write(chip, LP5523_REG_MASTER_FADER_BASE + nr - 1,
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(u8)val);
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mutex_unlock(&chip->lock);
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if (ret == 0)
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ret = len;
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return ret;
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}
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store_fader(1)
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store_fader(2)
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store_fader(3)
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static ssize_t show_master_fader_leds(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
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struct lp55xx_chip *chip = led->chip;
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int i, ret, pos = 0;
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u8 val;
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mutex_lock(&chip->lock);
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for (i = 0; i < LP5523_MAX_LEDS; i++) {
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ret = lp55xx_read(chip, LP5523_REG_LED_CTRL_BASE + i, &val);
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if (ret)
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goto leave;
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val = (val & LP5523_FADER_MAPPING_MASK)
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>> LP5523_FADER_MAPPING_SHIFT;
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if (val > 3) {
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ret = -EINVAL;
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goto leave;
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}
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buf[pos++] = val + '0';
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}
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buf[pos++] = '\n';
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ret = pos;
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leave:
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mutex_unlock(&chip->lock);
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return ret;
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}
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static ssize_t store_master_fader_leds(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t len)
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{
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struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
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struct lp55xx_chip *chip = led->chip;
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int i, n, ret;
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u8 val;
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n = min_t(int, len, LP5523_MAX_LEDS);
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mutex_lock(&chip->lock);
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for (i = 0; i < n; i++) {
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if (buf[i] >= '0' && buf[i] <= '3') {
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val = (buf[i] - '0') << LP5523_FADER_MAPPING_SHIFT;
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ret = lp55xx_update_bits(chip,
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LP5523_REG_LED_CTRL_BASE + i,
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LP5523_FADER_MAPPING_MASK,
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val);
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if (ret)
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goto leave;
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} else {
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ret = -EINVAL;
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goto leave;
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}
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}
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ret = len;
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leave:
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mutex_unlock(&chip->lock);
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return ret;
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}
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static void lp5523_led_brightness_work(struct work_struct *work)
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{
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struct lp55xx_led *led = container_of(work, struct lp55xx_led,
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@ -688,6 +824,14 @@ static LP55XX_DEV_ATTR_WO(engine1_load, store_engine1_load);
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static LP55XX_DEV_ATTR_WO(engine2_load, store_engine2_load);
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static LP55XX_DEV_ATTR_WO(engine3_load, store_engine3_load);
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static LP55XX_DEV_ATTR_RO(selftest, lp5523_selftest);
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static LP55XX_DEV_ATTR_RW(master_fader1, show_master_fader1,
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store_master_fader1);
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static LP55XX_DEV_ATTR_RW(master_fader2, show_master_fader2,
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store_master_fader2);
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static LP55XX_DEV_ATTR_RW(master_fader3, show_master_fader3,
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store_master_fader3);
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static LP55XX_DEV_ATTR_RW(master_fader_leds, show_master_fader_leds,
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store_master_fader_leds);
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static struct attribute *lp5523_attributes[] = {
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&dev_attr_engine1_mode.attr,
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@ -700,6 +844,10 @@ static struct attribute *lp5523_attributes[] = {
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&dev_attr_engine2_leds.attr,
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&dev_attr_engine3_leds.attr,
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&dev_attr_selftest.attr,
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&dev_attr_master_fader1.attr,
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&dev_attr_master_fader2.attr,
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&dev_attr_master_fader3.attr,
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&dev_attr_master_fader_leds.attr,
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NULL,
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};
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