diff options
| author | Kevin Huang <kevinh@nvidia.com> | 2012-05-31 16:55:15 -0700 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-06-04 14:43:15 -0700 |
| commit | de263f6e253976d8371da7e7b7089f1d9b79e92b (patch) | |
| tree | b2b8753436aa4229815deeb94ea82c125c3112aa /drivers/video/tegra/dc/ext | |
| parent | 6265d503687da50baefd1b8364abd7194a5826e8 (diff) | |
video: tegra: dc: Export dispay feature table.
Bug 992947
Change-Id: I0d1ecc9f8f042956cbe631779260a38573936616
Signed-off-by: Kevin Huang <kevinh@nvidia.com>
Reviewed-on: http://git-master/r/105776
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Diffstat (limited to 'drivers/video/tegra/dc/ext')
| -rw-r--r-- | drivers/video/tegra/dc/ext/dev.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/ext/dev.c b/drivers/video/tegra/dc/ext/dev.c index c349a4720d2e..a8de7a7a26e0 100644 --- a/drivers/video/tegra/dc/ext/dev.c +++ b/drivers/video/tegra/dc/ext/dev.c @@ -708,6 +708,21 @@ static int tegra_dc_ext_get_status(struct tegra_dc_ext_user *user, return 0; } +static int tegra_dc_ext_get_feature(struct tegra_dc_ext_user *user, + struct tegra_dc_ext_feature *feature) +{ + struct tegra_dc *dc = user->ext->dc; + struct tegra_dc_feature *table = dc->feature; + + if (dc->enabled && feature->entries) { + feature->length = table->num_entries; + memcpy(feature->entries, table->entries, table->num_entries * + sizeof(struct tegra_dc_feature_entry)); + } + + return 0; +} + static long tegra_dc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { @@ -805,6 +820,22 @@ static long tegra_dc_ioctl(struct file *filp, unsigned int cmd, return tegra_dc_ext_set_lut(user, &args); } + case TEGRA_DC_EXT_GET_FEATURES: + { + struct tegra_dc_ext_feature args; + int ret; + + if (copy_from_user(&args, user_arg, sizeof(args))) + return -EFAULT; + + ret = tegra_dc_ext_get_feature(user, &args); + + if (copy_to_user(user_arg, &args, sizeof(args))) + return -EFAULT; + + return ret; + } + default: return -EINVAL; } |