From: Subramani Venkatesh <[email protected]> LPR power saving methods are exported to user by sysfs entires, implementing of ioctl will help user application to use the LPR.
echo 1 > /sys/devices/platform/omapdss/display0/lpr_enable enables the LPR on LCD. echo 0 > /sys/devices/platform/omapdss/display0/lpr_enable disables the LPR on LCD. Signed-off-by: Kishore Y <[email protected]> Signed-off-by: Sudeep Basavaraj <[email protected]> --- drivers/video/omap2/dss/display.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c index 3b92b84..81fc70e 100644 --- a/drivers/video/omap2/dss/display.c +++ b/drivers/video/omap2/dss/display.c @@ -277,6 +277,28 @@ static ssize_t display_wss_store(struct device *dev, return size; } +unsigned long lpr_enable; +extern int omap_dispc_lpr_enable(void); +extern void omap_dispc_lpr_disable(void); + +static ssize_t display_lpr_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t size) +{ + lpr_enable = simple_strtoul(buf, NULL, 0); + if (lpr_enable) + omap_dispc_lpr_enable(); + else + omap_dispc_lpr_disable(); + + return size; +} + +static ssize_t display_lpr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%lu\n", lpr_enable); +} + static DEVICE_ATTR(enabled, S_IRUGO|S_IWUSR, display_enabled_show, display_enabled_store); static DEVICE_ATTR(update_mode, S_IRUGO|S_IWUSR, @@ -291,6 +313,8 @@ static DEVICE_ATTR(mirror, S_IRUGO|S_IWUSR, display_mirror_show, display_mirror_store); static DEVICE_ATTR(wss, S_IRUGO|S_IWUSR, display_wss_show, display_wss_store); +static DEVICE_ATTR(lpr_enable, S_IRUGO|S_IWUSR, + display_lpr_show, display_lpr_store); static struct device_attribute *display_sysfs_attrs[] = { &dev_attr_enabled, @@ -300,6 +324,7 @@ static struct device_attribute *display_sysfs_attrs[] = { &dev_attr_rotate, &dev_attr_mirror, &dev_attr_wss, + &dev_attr_lpr_enable, NULL }; -- 1.5.4.3 Regards, Kishore Y -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
