drm/i2c: tda998x: Choose between atomic or non atomic dpms helper
Choose between atomic or non atomic connector dpms helper. If tda998x
is connected to a drm driver that does not support atomic modeset
calling drm_atomic_helper_connector_dpms() causes a crash when the
connectors atomic state is not initialized. The patch implements a
driver specific connector dpms helper that calls
drm_atomic_helper_connector_dpms() if driver supports DRIVER_ATOMIC
and otherwise it calls the legacy drm_helper_connector_dpms().
Fixes commit 9736e988d3
("drm/i2c: tda998x: Add support for atomic
modesetting").
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -1382,8 +1382,16 @@ static void tda998x_connector_destroy(struct drm_connector *connector)
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drm_connector_cleanup(connector);
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}
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static int tda998x_connector_dpms(struct drm_connector *connector, int mode)
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{
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if (drm_core_check_feature(connector->dev, DRIVER_ATOMIC))
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return drm_atomic_helper_connector_dpms(connector, mode);
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else
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return drm_helper_connector_dpms(connector, mode);
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}
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static const struct drm_connector_funcs tda998x_connector_funcs = {
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.dpms = drm_atomic_helper_connector_dpms,
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.dpms = tda998x_connector_dpms,
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.reset = drm_atomic_helper_connector_reset,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.detect = tda998x_connector_detect,
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