diff options
| -rw-r--r-- | drivers/input/mouse/cyapa_gen3.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c index 214d45afc9f2..6e04e4b08e63 100644 --- a/drivers/input/mouse/cyapa_gen3.c +++ b/drivers/input/mouse/cyapa_gen3.c @@ -783,6 +783,76 @@ static int cyapa_gen3_do_fw_update(struct cyapa *cyapa, return 0; } +static ssize_t cyapa_gen3_show_baseline(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int max_baseline, min_baseline; + int tries; + int ret; + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status. err = %d\n", ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) != CYAPA_DEV_NORMAL) { + dev_warn(dev, "Trackpad device is busy. device state = 0x%x\n", + ret); + ret = -EAGAIN; + goto out; + } + + ret = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET, + OP_REPORT_BASELINE_MASK); + if (ret < 0) { + dev_err(dev, "Failed to send report baseline command. %d\n", + ret); + goto out; + } + + tries = 3; /* Try for 30 to 60 ms */ + do { + usleep_range(10000, 20000); + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status. err = %d\n", + ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) == CYAPA_DEV_NORMAL) + break; + } while (--tries); + + if (tries == 0) { + dev_err(dev, "Device timed out going to Normal state.\n"); + ret = -ETIMEDOUT; + goto out; + } + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_MAX_BASELINE); + if (ret < 0) { + dev_err(dev, "Failed to read max baseline. err = %d\n", ret); + goto out; + } + max_baseline = ret; + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_MIN_BASELINE); + if (ret < 0) { + dev_err(dev, "Failed to read min baseline. err = %d\n", ret); + goto out; + } + min_baseline = ret; + + dev_dbg(dev, "Baseline report successful. Max: %d Min: %d\n", + max_baseline, min_baseline); + ret = scnprintf(buf, PAGE_SIZE, "%d %d\n", max_baseline, min_baseline); + +out: + return ret; +} + /* * cyapa_get_wait_time_for_pwr_cmd * @@ -1104,6 +1174,8 @@ const struct cyapa_dev_ops cyapa_gen3_ops = { .bl_deactivate = cyapa_gen3_bl_deactivate, .bl_initiate = cyapa_gen3_bl_initiate, + .show_baseline = cyapa_gen3_show_baseline, + .initialize = cyapa_gen3_initialize, .state_parse = cyapa_gen3_state_parse, |