diff options
| author | Maxime Ripard <maxime@cerno.tech> | 2021-05-24 15:18:52 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2021-06-07 13:33:46 +0200 |
| commit | 6800234ceee01416657b05efcf233f6bdc68272c (patch) | |
| tree | 55d43cc82226982b3f0a0962bca447b28ac290b9 /drivers/gpu/drm/vc4/vc4_hdmi.c | |
| parent | e075a7811977ff51c917a65ed1896e08231d2615 (diff) | |
| download | linux-6800234ceee01416657b05efcf233f6bdc68272c.tar.bz2 | |
drm/vc4: hdmi: Convert to gpiod
The new gpiod interface takes care of parsing the GPIO flags and to
return the logical value when accessing an active-low GPIO, so switching
to it simplifies a lot the driver.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210524131852.263883-2-maxime@cerno.tech
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 496c4d78143d..3c4cc133e3df 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -166,10 +166,9 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); bool connected = false; - if (vc4_hdmi->hpd_gpio) { - if (gpio_get_value_cansleep(vc4_hdmi->hpd_gpio) ^ - vc4_hdmi->hpd_active_low) - connected = true; + if (vc4_hdmi->hpd_gpio && + gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio)) { + connected = true; } else if (drm_probe_ddc(vc4_hdmi->ddc)) { connected = true; } else if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) { @@ -2105,7 +2104,6 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) struct vc4_hdmi *vc4_hdmi; struct drm_encoder *encoder; struct device_node *ddc_node; - u32 value; int ret; vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL); @@ -2144,18 +2142,10 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) /* Only use the GPIO HPD pin if present in the DT, otherwise * we'll use the HDMI core's register. */ - if (of_find_property(dev->of_node, "hpd-gpios", &value)) { - enum of_gpio_flags hpd_gpio_flags; - - vc4_hdmi->hpd_gpio = of_get_named_gpio_flags(dev->of_node, - "hpd-gpios", 0, - &hpd_gpio_flags); - if (vc4_hdmi->hpd_gpio < 0) { - ret = vc4_hdmi->hpd_gpio; - goto err_put_ddc; - } - - vc4_hdmi->hpd_active_low = hpd_gpio_flags & OF_GPIO_ACTIVE_LOW; + vc4_hdmi->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); + if (IS_ERR(vc4_hdmi->hpd_gpio)) { + ret = PTR_ERR(vc4_hdmi->hpd_gpio); + goto err_put_ddc; } vc4_hdmi->disable_wifi_frequencies = |