diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0292-drm-vc4-Respect-GPIO_ACTIVE_LOW-on-HDMI-HPD-if-set-i.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0292-drm-vc4-Respect-GPIO_ACTIVE_LOW-on-HDMI-HPD-if-set-i.patch | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0292-drm-vc4-Respect-GPIO_ACTIVE_LOW-on-HDMI-HPD-if-set-i.patch b/target/linux/brcm2708/patches-4.4/0292-drm-vc4-Respect-GPIO_ACTIVE_LOW-on-HDMI-HPD-if-set-i.patch deleted file mode 100644 index 192277708f..0000000000 --- a/target/linux/brcm2708/patches-4.4/0292-drm-vc4-Respect-GPIO_ACTIVE_LOW-on-HDMI-HPD-if-set-i.patch +++ /dev/null @@ -1,57 +0,0 @@ -From 79c0037706c4e589f1743679e21a0aee51b9b609 Mon Sep 17 00:00:00 2001 -From: Eric Anholt <eric@anholt.net> -Date: Mon, 29 Feb 2016 17:53:01 -0800 -Subject: [PATCH] drm/vc4: Respect GPIO_ACTIVE_LOW on HDMI HPD if set in the - devicetree. - -The original Raspberry Pi had the GPIO active high, but the later -models are active low. The DT GPIO bindings allow specifying the -active flag, except that it doesn't get propagated to the gpiodesc, so -you have to handle it yourself. - -Signed-off-by: Eric Anholt <eric@anholt.net> -Tested-by: Daniel Stone <daniels@collabora.com> -(cherry picked from commit 0b06e0a7945130e6a187f7959529cba7725f573a) ---- - drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++++++++-- - 1 file changed, 10 insertions(+), 2 deletions(-) - ---- a/drivers/gpu/drm/vc4/vc4_hdmi.c -+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c -@@ -47,6 +47,7 @@ struct vc4_hdmi { - void __iomem *hdmicore_regs; - void __iomem *hd_regs; - int hpd_gpio; -+ bool hpd_active_low; - - struct clk *pixel_clock; - struct clk *hsm_clock; -@@ -168,7 +169,8 @@ vc4_hdmi_connector_detect(struct drm_con - return connector_status_connected; - - if (vc4->hdmi->hpd_gpio) { -- if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio)) -+ if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio) ^ -+ vc4->hdmi->hpd_active_low) - return connector_status_connected; - else - return connector_status_disconnected; -@@ -519,11 +521,17 @@ static int vc4_hdmi_bind(struct device * - * we'll use the HDMI core's register. - */ - if (of_find_property(dev->of_node, "hpd-gpios", &value)) { -- hdmi->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0); -+ enum of_gpio_flags hpd_gpio_flags; -+ -+ hdmi->hpd_gpio = of_get_named_gpio_flags(dev->of_node, -+ "hpd-gpios", 0, -+ &hpd_gpio_flags); - if (hdmi->hpd_gpio < 0) { - ret = hdmi->hpd_gpio; - goto err_unprepare_hsm; - } -+ -+ hdmi->hpd_active_low = hpd_gpio_flags & OF_GPIO_ACTIVE_LOW; - } - - vc4->hdmi = hdmi; |