[PATCH 16/19] OMAP: DSS2: Taal: Add sysfs file for ESD interval

[Tomi Valkeinen]

Implement sysfs support to configure the ESD interval.

Signed-off-by: Tomi Valkeinen <tomi.valkei...@ti.com>
---
 drivers/video/omap2/displays/panel-taal.c |   42 +++++++++++++++++++++++++++++
 1 files changed, 42 insertions(+), 0 deletions(-)

diff --git a/drivers/video/omap2/displays/panel-taal.c 
b/drivers/video/omap2/displays/panel-taal.c
index 2787a51..3192dd7 100644
--- a/drivers/video/omap2/displays/panel-taal.c
+++ b/drivers/video/omap2/displays/panel-taal.c
@@ -635,18 +635,60 @@ static ssize_t show_cabc_available_modes(struct device 
*dev,
        return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
 }
 
+static ssize_t taal_store_esd_interval(struct device *dev,
+               struct device_attribute *attr,
+               const char *buf, size_t count)
+{
+       struct omap_dss_device *dssdev = to_dss_device(dev);
+       struct taal_data *td = dev_get_drvdata(&dssdev->dev);
+
+       unsigned long t;
+       int r;
+
+       r = strict_strtoul(buf, 10, &t);
+       if (r)
+               return r;
+
+       mutex_lock(&td->lock);
+       taal_cancel_esd_work(dssdev);
+       td->esd_interval = t;
+       if (td->enabled)
+               taal_queue_esd_work(dssdev);
+       mutex_unlock(&td->lock);
+
+       return count;
+}
+
+static ssize_t taal_show_esd_interval(struct device *dev,
+               struct device_attribute *attr,
+               char *buf)
+{
+       struct omap_dss_device *dssdev = to_dss_device(dev);
+       struct taal_data *td = dev_get_drvdata(&dssdev->dev);
+       unsigned t;
+
+       mutex_lock(&td->lock);
+       t = td->esd_interval;
+       mutex_unlock(&td->lock);
+
+       return snprintf(buf, PAGE_SIZE, "%u\n", t);
+}
+
 static DEVICE_ATTR(num_dsi_errors, S_IRUGO, taal_num_errors_show, NULL);
 static DEVICE_ATTR(hw_revision, S_IRUGO, taal_hw_revision_show, NULL);
 static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
                show_cabc_mode, store_cabc_mode);
 static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
                show_cabc_available_modes, NULL);
+static DEVICE_ATTR(esd_interval, S_IRUGO | S_IWUSR,
+               taal_show_esd_interval, taal_store_esd_interval);
 
 static struct attribute *taal_attrs[] = {
        &dev_attr_num_dsi_errors.attr,
        &dev_attr_hw_revision.attr,
        &dev_attr_cabc_mode.attr,
        &dev_attr_cabc_available_modes.attr,
+       &dev_attr_esd_interval.attr,
        NULL,
 };
 
-- 
1.7.1

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