On 2014년 10월 01일 15:19, YoungJun Cho wrote:
The drm_helper_hpd_irq_event() does dpms control and panel is initialized and displayed on by it. So should register TE irq handler(exynos_dsi_te_irq_handler()) beforehand.
This patch also includes some codes not relevant to register TE irq handler before drm_helper_hpd_irq_event call. How about separating this patch into two patches?
And below is my comment.
Thanks, Inki Dae
Signed-off-by: YoungJun Cho yj44.cho@samsung.com Acked-by: Inki Dae inki.dae@samsung.com Acked-by: Kyungmin Park kyungmin.park@samsung.com
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 24741d8..ded69df 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1143,6 +1143,7 @@ static int exynos_dsi_init(struct exynos_dsi *dsi) static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi) { int ret;
int te_gpio_irq;
dsi->te_gpio = of_get_named_gpio(dsi->panel_node, "te-gpios", 0); if (!gpio_is_valid(dsi->te_gpio)) {
@@ -1157,14 +1158,10 @@ static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi) goto out; }
- /*
* This TE GPIO IRQ should not be set to IRQ_NOAUTOEN, because panel* calls drm_panel_init() first then calls mipi_dsi_attach() in probe().* It means that te_gpio is invalid when exynos_dsi_enable_irq() is* called by drm_panel_init() before panel is attached.*/- ret = request_threaded_irq(gpio_to_irq(dsi->te_gpio),
exynos_dsi_te_irq_handler, NULL,
- te_gpio_irq = gpio_to_irq(dsi->te_gpio);
- irq_set_status_flags(te_gpio_irq, IRQ_NOAUTOEN);
I think with IRQ_NOAUTOEN, te irq wouldn't be enabled automatically. So shouldn't we call enable_irq() and disable_irq() somewhere?
- ret = request_threaded_irq(te_gpio_irq, exynos_dsi_te_irq_handler, NULL, IRQF_TRIGGER_RISING, "TE", dsi); if (ret) { dev_err(dsi->dev, "request interrupt failed with %d\n", ret);
@@ -1195,9 +1192,6 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host, dsi->mode_flags = device->mode_flags; dsi->panel_node = device->dev.of_node;
- if (dsi->connector.dev)
drm_helper_hpd_irq_event(dsi->connector.dev);- /*
- This is a temporary solution and should be made by more generic way.
@@ -1211,6 +1205,9 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host, return ret; }
- if (dsi->connector.dev)
drm_helper_hpd_irq_event(dsi->connector.dev);- return 0;
}