static enum drm_lspcon_mode lspcon_wait_mode(struct intel_lspcon *lspcon,
enum drm_lspcon_mode mode)
{
enum drm_lspcon_mode current_mode;
current_mode = lspcon_get_current_mode(lspcon);
if (current_mode == mode)
goto out;
DRM_DEBUG_KMS("Waiting for LSPCON mode %s to settle\n",
lspcon_mode_name(mode));
wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 400);
if (current_mode != mode)
DRM_ERROR("LSPCON mode hasn't settled\n");
out:
DRM_DEBUG_KMS("Current LSPCON mode %s\n",
lspcon_mode_name(current_mode));
return current_mode;
}
static bool lspcon_probe(struct intel_lspcon *lspcon)
{
enum drm_dp_dual_mode_type adaptor_type;
struct i2c_adapter *adapter = &lspcon_to_intel_dp(lspcon)->aux.ddc;
/* Lets probe the adaptor and check its type */
adaptor_type = drm_dp_dual_mode_detect(adapter);
if (adaptor_type != DRM_DP_DUAL_MODE_LSPCON) {
DRM_DEBUG_KMS("No LSPCON detected, found %s\n",
drm_dp_get_dual_mode_type_name(adaptor_type));
return false;
}
/* Yay ... got a LSPCON device */
DRM_DEBUG_KMS("LSPCON detected\n");
lspcon->mode = lspcon_get_current_mode(lspcon);
lspcon->active = true;
return true;
}
