diff options
| author | Sandeep Panda <spanda@codeaurora.org> | 2016-02-25 14:45:20 +0530 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-25 16:02:28 -0700 |
| commit | 8e955dcd626089163456a1ac56881c47bbd3a50f (patch) | |
| tree | 8da523f1224b782f7de34d4a839e3d27a4569ce8 /drivers | |
| parent | 94c6261fe77c6c6c3d5acd7e8496ed200f9b38d7 (diff) | |
msm: mdss: add support to read hpd state from sysfs node
This change adds support to read HPD state from sysfs node,
which will be helpful in automated test cases where multiple
HPD operations are performed on HDMI TV.
Change-Id: I39d19447c01d11a54a8e54c661b2dd177310c205
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dba_utils.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dba_utils.c b/drivers/video/fbdev/msm/mdss_dba_utils.c index b583468ffa8b..65874e5ab3b8 100644 --- a/drivers/video/fbdev/msm/mdss_dba_utils.c +++ b/drivers/video/fbdev/msm/mdss_dba_utils.c @@ -219,13 +219,37 @@ static ssize_t mdss_dba_utils_sysfs_wta_hpd(struct device *dev, return count; } +static ssize_t mdss_dba_utils_sysfs_rda_hpd(struct device *dev, + struct device_attribute *attr, char *buf) +{ + ssize_t ret; + struct mdss_dba_utils_data *udata = NULL; + + if (!dev) { + pr_debug("invalid device\n"); + return -EINVAL; + } + + udata = mdss_dba_utils_get_data(dev); + + if (!udata) { + pr_debug("invalid input\n"); + return -EINVAL; + } + + ret = snprintf(buf, PAGE_SIZE, "%d\n", udata->hpd_state); + pr_debug("'%d'\n", udata->hpd_state); + + return ret; +} + static DEVICE_ATTR(connected, S_IRUGO, mdss_dba_utils_sysfs_rda_connected, NULL); static DEVICE_ATTR(video_mode, S_IRUGO, mdss_dba_utils_sysfs_rda_video_mode, NULL); -static DEVICE_ATTR(hpd, S_IRUGO | S_IWUSR, NULL, +static DEVICE_ATTR(hpd, S_IRUGO | S_IWUSR, mdss_dba_utils_sysfs_rda_hpd, mdss_dba_utils_sysfs_wta_hpd); static struct attribute *mdss_dba_utils_fs_attrs[] = { |