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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>
This commit is contained in:
Andrzej Hajda 2017-03-15 12:20:42 +01:00 committed by Inki Dae
parent 9cdf0ed25a
commit 22e098daae
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/exynos/exynos_drm_dsi.c
View File

@ -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;
}