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| author | Matthew Bouyack <mbouyack@google.com> | 2020-12-08 08:52:01 -0800 |
|---|---|---|
| committer | Andrew Evans <andrewevans@google.com> | 2022-03-09 15:04:44 -0800 |
| commit | c410af68015d5c069c23df50bdfccc9adf373431 (patch) | |
| tree | 44d14200f7f468adb5ef28cc451756cc2fc69b7f | |
| parent | 41462a9eb29903dad92c718ba82ee56e19a2174d (diff) | |
| download | rotary-encoders-c410af68015d5c069c23df50bdfccc9adf373431.tar.gz | |
Add diag to power down r11 crown
'echo 1 > pd' to power down crown
'echo 0 > pd' to restore crown
'cat pd' to check current power down status
Bug: 173175887
Change-Id: I9f57eb0412ac39a5b32fcd9d1f6c5351a23bed1d
| -rw-r--r-- | ots_pat9126/pat9126.c | 48 | ||||
| -rw-r--r-- | ots_pat9126/pat9126.h | 3 |
2 files changed, 51 insertions, 0 deletions
diff --git a/ots_pat9126/pat9126.c b/ots_pat9126/pat9126.c index a0e7c35..996e098 100644 --- a/ots_pat9126/pat9126.c +++ b/ots_pat9126/pat9126.c @@ -535,6 +535,50 @@ static ssize_t pat9126_sleep_level_store(struct device *dev, return count; } +static ssize_t pat9126_pd_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) { + u8 config, tmp; + + struct pixart_pat9126_data *data = + (struct pixart_pat9126_data *) dev_get_drvdata(dev); + struct i2c_client *client = data->client; + + pat9126_read(client, PIXART_PAT9126_CONFIG_REG, &config); + config &= ~POWER_DOWN_ENABLE_BIT; + + if (!kstrtou8(buf, 0, &tmp)) { + if (tmp) { + config |= POWER_DOWN_ENABLE_BIT; + } + + dev_dbg(dev, "power down: %d\n", (tmp ? 1 : 0)); + pat9126_write(client, PIXART_PAT9126_CONFIG_REG, config); + } else { + dev_warn(dev, "failed to parse sysfs arg: '%s'\n", buf); + } + + return count; +} + +static ssize_t pat9126_pd_show(struct device *dev, + struct device_attribute *attr, + char *buf) { + int count = 0; + uint8_t tmp; + + struct pixart_pat9126_data *data = + (struct pixart_pat9126_data *) dev_get_drvdata(dev); + struct i2c_client *client = data->client; + + pat9126_read(client, PIXART_PAT9126_CONFIG_REG, &tmp); + tmp = ((POWER_DOWN_ENABLE_BIT & tmp) ? 1 : 0); + count += sprintf(buf, "0x%x\n", tmp); + + return count; +} + static DEVICE_ATTR (crown_sensitivity, S_IRUGO | S_IWUSR | S_IWGRP, pat9126_sensitivity_show, pat9126_sensitivity_store); @@ -547,11 +591,15 @@ static DEVICE_ATTR static DEVICE_ATTR (sleep_level, S_IWUSR | S_IWGRP, NULL, pat9126_sleep_level_store); +static DEVICE_ATTR + (pd, S_IRUGO | S_IWUSR | S_IWGRP, pat9126_pd_show, pat9126_pd_store); + static struct attribute *pat9126_attr_list[] = { &dev_attr_crown_sensitivity.attr, &dev_attr_id.attr, &dev_attr_max_sleep_level.attr, &dev_attr_sleep_level.attr, + &dev_attr_pd.attr, NULL, }; diff --git a/ots_pat9126/pat9126.h b/ots_pat9126/pat9126.h index d94a955..72d8a7e 100644 --- a/ots_pat9126/pat9126.h +++ b/ots_pat9126/pat9126.h @@ -114,6 +114,9 @@ #define SLEEP_MODE_ONE 0x2 #define SLEEP_MODE_TWO 0x4 +/* Power down bit */ +#define POWER_DOWN_ENABLE_BIT 0x08 + /*define pixel grab flag*/ #define OTS_FRAME_VALID 0x80 #define OTS_PIXEL_VALID 0x40 |