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drm/vc4: hdmi: switch to struct drm_edid

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Prefer struct drm_edid based functions over struct edid.

Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/eabece3ca7fae28395dcad0d2c221113cd924180.1713273659.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2024-04-16 16:22:21 +03:00
parent bd730c77fa
commit f1e4db073f
1 changed files with 25 additions and 21 deletions
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46
drivers/gpu/drm/vc4/vc4_hdmi.c
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@ -412,15 +412,14 @@ static void vc4_hdmi_handle_hotplug(struct vc4_hdmi *vc4_hdmi,
enum drm_connector_status status)
{
struct drm_connector *connector = &vc4_hdmi->connector;
struct edid *edid;
const struct drm_edid *drm_edid;
int ret;
/*
* NOTE: This function should really be called with
* vc4_hdmi->mutex held, but doing so results in reentrancy
* issues since cec_s_phys_addr_from_edid might call
* .adap_enable, which leads to that funtion being called with
* our mutex held.
* NOTE: This function should really be called with vc4_hdmi->mutex
* held, but doing so results in reentrancy issues since
* cec_s_phys_addr() might call .adap_enable, which leads to that
* funtion being called with our mutex held.
*
* A similar situation occurs with vc4_hdmi_reset_link() that
* will call into our KMS hooks if the scrambling was enabled.
@ -435,12 +434,16 @@ static void vc4_hdmi_handle_hotplug(struct vc4_hdmi *vc4_hdmi,
return;
}
edid = drm_get_edid(connector, vc4_hdmi->ddc);
if (!edid)
drm_edid = drm_edid_read_ddc(connector, vc4_hdmi->ddc);
drm_edid_connector_update(connector, drm_edid);
cec_s_phys_addr(vc4_hdmi->cec_adap,
connector->display_info.source_physical_address, false);
if (!drm_edid)
return;
cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid);
kfree(edid);
drm_edid_free(drm_edid);
for (;;) {
ret = vc4_hdmi_reset_link(connector, ctx);
@ -492,28 +495,29 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
struct vc4_dev *vc4 = to_vc4_dev(connector->dev);
const struct drm_edid *drm_edid;
int ret = 0;
struct edid *edid;
/*
* NOTE: This function should really take vc4_hdmi->mutex, but
* doing so results in reentrancy issues since
* cec_s_phys_addr_from_edid might call .adap_enable, which
* leads to that funtion being called with our mutex held.
* NOTE: This function should really take vc4_hdmi->mutex, but doing so
* results in reentrancy issues since cec_s_phys_addr() might call
* .adap_enable, which leads to that funtion being called with our mutex
* held.
*
* Concurrency isn't an issue at the moment since we don't share
* any state with any of the other frameworks so we can ignore
* the lock for now.
*/
edid = drm_get_edid(connector, vc4_hdmi->ddc);
cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid);
if (!edid)
drm_edid = drm_edid_read_ddc(connector, vc4_hdmi->ddc);
drm_edid_connector_update(connector, drm_edid);
cec_s_phys_addr(vc4_hdmi->cec_adap,
connector->display_info.source_physical_address, false);
if (!drm_edid)
return 0;
drm_connector_update_edid_property(connector, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
ret = drm_edid_connector_add_modes(connector);
drm_edid_free(drm_edid);
if (!vc4->hvs->vc5_hdmi_enable_hdmi_20) {
struct drm_device *drm = connector->dev;