#define LP5521_MASTER_ENABLE 0x40 /* Chip master enable */
#define LP5521_LOGARITHMIC_PWM 0x80 /* Logarithmic PWM adjustment */
#define LP5521_EXEC_RUN 0x2A
-
-/* Bits in CONFIG register */
-#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */
-#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */
-#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */
-#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */
-#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */
-#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */
-#define LP5521_R_TO_BATT 4 /* R out: 0 = CP, 1 = Vbat */
-#define LP5521_CLK_SRC_EXT 0 /* Ext-clk source (CLK_32K) */
-#define LP5521_CLK_INT 1 /* Internal clock */
-#define LP5521_CLK_AUTO 2 /* Automatic clock selection */
+#define LP5521_ENABLE_DEFAULT \
+ (LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM)
+#define LP5521_ENABLE_RUN_PROGRAM \
+ (LP5521_ENABLE_DEFAULT | LP5521_EXEC_RUN)
/* Status */
#define LP5521_EXT_CLK_USED 0x08
/* default R channel current register value */
#define LP5521_REG_R_CURR_DEFAULT 0xAF
+/* Pattern Mode */
+#define PATTERN_OFF 0
+
struct lp5521_engine {
int id;
u8 mode;
{
struct lp5521_chip *chip = i2c_get_clientdata(client);
int ret;
+ u8 cfg;
lp5521_init_engine(chip);
/* Set all PWMs to direct control mode */
- ret = lp5521_write(client, LP5521_REG_OP_MODE, 0x3F);
+ ret = lp5521_write(client, LP5521_REG_OP_MODE, LP5521_CMD_DIRECT);
- /* Enable auto-powersave, set charge pump to auto, red to battery */
- ret |= lp5521_write(client, LP5521_REG_CONFIG,
- LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT);
+ cfg = chip->pdata->update_config ?
+ : (LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT);
+ ret |= lp5521_write(client, LP5521_REG_CONFIG, cfg);
/* Initialize all channels PWM to zero -> leds off */
ret |= lp5521_write(client, LP5521_REG_R_PWM, 0);
/* Set engines are set to run state when OP_MODE enables engines */
ret |= lp5521_write(client, LP5521_REG_ENABLE,
- LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM |
- LP5521_EXEC_RUN);
+ LP5521_ENABLE_RUN_PROGRAM);
/* enable takes 500us. 1 - 2 ms leaves some margin */
usleep_range(1000, 2000);
int ret;
u8 buf;
- ret = lp5521_write(client, LP5521_REG_ENABLE,
- LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM);
+ ret = lp5521_write(client, LP5521_REG_ENABLE, LP5521_ENABLE_DEFAULT);
if (ret)
return ret;
/* enable takes 500us. 1 - 2 ms leaves some margin */
ret = lp5521_read(client, LP5521_REG_ENABLE, &buf);
if (ret)
return ret;
- if (buf != (LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM))
+ if (buf != LP5521_ENABLE_DEFAULT)
return -ENODEV;
return 0;
ssize_t ret;
unsigned long curr;
- if (strict_strtoul(buf, 0, &curr))
+ if (kstrtoul(buf, 0, &curr))
return -EINVAL;
if (curr > led->max_current)
return sprintf(buf, "%s\n", ret ? "FAIL" : "OK");
}
+static void lp5521_clear_program_memory(struct i2c_client *cl)
+{
+ int i;
+ u8 rgb_mem[] = {
+ LP5521_REG_R_PROG_MEM,
+ LP5521_REG_G_PROG_MEM,
+ LP5521_REG_B_PROG_MEM,
+ };
+
+ for (i = 0; i < ARRAY_SIZE(rgb_mem); i++) {
+ lp5521_write(cl, rgb_mem[i], 0);
+ lp5521_write(cl, rgb_mem[i] + 1, 0);
+ }
+}
+
+static void lp5521_write_program_memory(struct i2c_client *cl,
+ u8 base, u8 *rgb, int size)
+{
+ int i;
+
+ if (!rgb || size <= 0)
+ return;
+
+ for (i = 0; i < size; i++)
+ lp5521_write(cl, base + i, *(rgb + i));
+
+ lp5521_write(cl, base + i, 0);
+ lp5521_write(cl, base + i + 1, 0);
+}
+
+static inline struct lp5521_led_pattern *lp5521_get_pattern
+ (struct lp5521_chip *chip, u8 offset)
+{
+ struct lp5521_led_pattern *ptn;
+ ptn = chip->pdata->patterns + (offset - 1);
+ return ptn;
+}
+
+static void lp5521_run_led_pattern(int mode, struct lp5521_chip *chip)
+{
+ struct lp5521_led_pattern *ptn;
+ struct i2c_client *cl = chip->client;
+ int num_patterns = chip->pdata->num_patterns;
+
+ if (mode > num_patterns || !(chip->pdata->patterns))
+ return;
+
+ if (mode == PATTERN_OFF) {
+ lp5521_write(cl, LP5521_REG_ENABLE, LP5521_ENABLE_DEFAULT);
+ usleep_range(1000, 2000);
+ lp5521_write(cl, LP5521_REG_OP_MODE, LP5521_CMD_DIRECT);
+ } else {
+ ptn = lp5521_get_pattern(chip, mode);
+ if (!ptn)
+ return;
+
+ lp5521_write(cl, LP5521_REG_OP_MODE, LP5521_CMD_LOAD);
+ usleep_range(1000, 2000);
+
+ lp5521_clear_program_memory(cl);
+
+ lp5521_write_program_memory(cl, LP5521_REG_R_PROG_MEM,
+ ptn->r, ptn->size_r);
+ lp5521_write_program_memory(cl, LP5521_REG_G_PROG_MEM,
+ ptn->g, ptn->size_g);
+ lp5521_write_program_memory(cl, LP5521_REG_B_PROG_MEM,
+ ptn->b, ptn->size_b);
+
+ lp5521_write(cl, LP5521_REG_OP_MODE, LP5521_CMD_RUN);
+ usleep_range(1000, 2000);
+ lp5521_write(cl, LP5521_REG_ENABLE, LP5521_ENABLE_RUN_PROGRAM);
+ }
+}
+
+static ssize_t store_led_pattern(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ struct lp5521_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+ unsigned long val;
+ int ret;
+
+ ret = strict_strtoul(buf, 16, &val);
+ if (ret)
+ return ret;
+
+ lp5521_run_led_pattern(val, chip);
+
+ return len;
+}
+
/* led class device attributes */
static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, show_current, store_current);
static DEVICE_ATTR(max_current, S_IRUGO , show_max_current, NULL);
static DEVICE_ATTR(engine2_load, S_IWUSR, NULL, store_engine2_load);
static DEVICE_ATTR(engine3_load, S_IWUSR, NULL, store_engine3_load);
static DEVICE_ATTR(selftest, S_IRUGO, lp5521_selftest, NULL);
+static DEVICE_ATTR(led_pattern, S_IWUSR, NULL, store_led_pattern);
static struct attribute *lp5521_attributes[] = {
&dev_attr_engine1_mode.attr,
&dev_attr_engine1_load.attr,
&dev_attr_engine2_load.attr,
&dev_attr_engine3_load.attr,
+ &dev_attr_led_pattern.attr,
NULL
};
return -EINVAL;
}
- snprintf(name, sizeof(name), "%s:channel%d",
- pdata->label ?: client->name, chan);
led->cdev.brightness_set = lp5521_set_brightness;
- led->cdev.name = name;
+ if (pdata->led_config[chan].name) {
+ led->cdev.name = pdata->led_config[chan].name;
+ } else {
+ snprintf(name, sizeof(name), "%s:channel%d",
+ pdata->label ?: client->name, chan);
+ led->cdev.name = name;
+ }
+
res = led_classdev_register(dev, &led->cdev);
if (res < 0) {
dev_err(dev, "couldn't register led on channel %d\n", chan);
* otherwise further access to the R G B channels in the
* LP5521_REG_ENABLE register will not have any effect - strange!
*/
- lp5521_read(client, LP5521_REG_R_CURRENT, &buf);
+ ret = lp5521_read(client, LP5521_REG_R_CURRENT, &buf);
if (buf != LP5521_REG_R_CURR_DEFAULT) {
- dev_err(&client->dev, "error in reseting chip\n");
+ dev_err(&client->dev, "error in resetting chip\n");
goto fail2;
}
usleep_range(10000, 20000);
struct lp5521_chip *chip = i2c_get_clientdata(client);
int i;
+ lp5521_run_led_pattern(PATTERN_OFF, chip);
lp5521_unregister_sysfs(client);
for (i = 0; i < chip->num_leds; i++) {
projects / cascardo / linux.git / blobdiff