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drm: tegra: use crtc helper drm_crtc_from_index()

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Function tegra_crtc_from_pipe() does the exactly same thing as what
crtc helper drm_crtc_from_index() provides.  Use the helper to save
some code.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1483961145-18453-6-git-send-email-shawnguo@kernel.org
This commit is contained in:
Shawn Guo 2017-01-09 19:25:44 +08:00 committed by Sean Paul
parent ea441bd33f
commit 75bcb0545b
1 changed files with 3 additions and 16 deletions
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19
drivers/gpu/drm/tegra/drm.c
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@ -804,23 +804,10 @@ static const struct file_operations tegra_drm_fops = {
.llseek = noop_llseek, .llseek = noop_llseek,
}; };
static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm,
unsigned int pipe)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
if (pipe == drm_crtc_index(crtc))
return crtc;
}
return NULL;
}
static u32 tegra_drm_get_vblank_counter(struct drm_device *drm, static u32 tegra_drm_get_vblank_counter(struct drm_device *drm,
unsigned int pipe) unsigned int pipe)
{ {
struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe);
struct tegra_dc *dc = to_tegra_dc(crtc); struct tegra_dc *dc = to_tegra_dc(crtc);
if (!crtc) if (!crtc)
@ -831,7 +818,7 @@ static u32 tegra_drm_get_vblank_counter(struct drm_device *drm,
static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe) static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe)
{ {
struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe);
struct tegra_dc *dc = to_tegra_dc(crtc); struct tegra_dc *dc = to_tegra_dc(crtc);
if (!crtc) if (!crtc)
@ -844,7 +831,7 @@ static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe)
static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe) static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe)
{ {
struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe);
struct tegra_dc *dc = to_tegra_dc(crtc); struct tegra_dc *dc = to_tegra_dc(crtc);
if (crtc) if (crtc)