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authorAndrzej Hajda <a.hajda@samsung.com>2017-03-15 12:20:42 +0100
committerInki Dae <inki.dae@samsung.com>2017-03-21 14:30:18 +0900
commit22e098daae7e53763493b9d9976ef8c65190017e (patch)
treee9e16e9c81f1ca5f0c62d4d67ef07e728162b886 /drivers/gpu/drm
parent9cdf0ed25a9b34fd82cb0eb47a8bdc47dc9f4ff5 (diff)
downloadlinux-22e098daae7e53763493b9d9976ef8c65190017e.tar.bz2
drm/exynos/dsi: make te-gpios optional
DSI forwards te-gpios interrupts to display controller, but if display controller works in HW-TRIGGER mode this interrupt is not necessary. Making te-gpios property optional allows to avoid generating spare interrupts. And also if panel device node of command mode panel device doesn't provide te-gpios property then the panel driver failed to probe. This was a critial issue. With this patch we can not only get rid of 60 interrupt callbacks per second but also fix the critial issues. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_dsi.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index c671f8e017db..d7ef26370e67 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1335,9 +1335,12 @@ static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi)
int te_gpio_irq;
dsi->te_gpio = of_get_named_gpio(dsi->panel_node, "te-gpios", 0);
+ if (dsi->te_gpio == -ENOENT)
+ return 0;
+
if (!gpio_is_valid(dsi->te_gpio)) {
- dev_err(dsi->dev, "no te-gpios specified\n");
ret = dsi->te_gpio;
+ dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret);
goto out;
}