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Commit a121f4e5 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Replace the aux ddc name switch statement with kasprintf() 



Use kasprintf() to generate the "DPDDC-<port>" name for the aux helper.

To deal with errors properly make intel_dp_aux_init() return something,
and adjust the caller to match. It seems we were also missing a
intel_dp_mst_encoder_cleanup() call on edp (non-port A) init failures,
so add that too.

The whole error/cleanup ordering doesn't feel entirely sane to me, but
I'll leave that part alone for now.

v2: Use kasprintf() instead of a table, reorder patches (Chis)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447266856-30249-3-git-send-email-ville.syrjala@linux.intel.com


Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
parent f3c6a3a7

drivers/gpu/drm/i915/intel_dp.c

+46 −29
Original line number Diff line number Diff line
@@ -1009,6 +1009,13 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) 
}



static void

intel_dp_aux_fini(struct intel_dp *intel_dp)

{

	drm_dp_aux_unregister(&intel_dp->aux);

	kfree(intel_dp->aux.name);

}



static int

intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector)

{

	struct drm_device *dev = intel_dp_to_dev(intel_dp);
@@ -1016,7 +1023,6 @@ intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) 
	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);

	enum port port = intel_dig_port->port;

	struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];

	const char *name = NULL;

	uint32_t porte_aux_ctl_reg = DPA_AUX_CH_CTL;

	int ret;
@@ -1043,23 +1049,18 @@ intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) 
	switch (port) {

	case PORT_A:

		intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL;

		name = "DPDDC-A";

		break;

	case PORT_B:

		intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL;

		name = "DPDDC-B";

		break;

	case PORT_C:

		intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL;

		name = "DPDDC-C";

		break;

	case PORT_D:

		intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL;

		name = "DPDDC-D";

		break;

	case PORT_E:

		intel_dp->aux_ch_ctl_reg = porte_aux_ctl_reg;

		name = "DPDDC-E";

		break;

	default:

		BUG();
@@ -1077,27 +1078,36 @@ intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) 
	if (!IS_HASWELL(dev) && !IS_BROADWELL(dev) && port != PORT_E)

		intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10;



	intel_dp->aux.name = name;

	intel_dp->aux.name = kasprintf(GFP_KERNEL, "DPDDC-%c", port_name(port));

	if (!intel_dp->aux.name)

		return -ENOMEM;



	intel_dp->aux.dev = dev->dev;

	intel_dp->aux.transfer = intel_dp_aux_transfer;



	DRM_DEBUG_KMS("registering %s bus for %s\n", name,

	DRM_DEBUG_KMS("registering %s bus for %s\n",

		      intel_dp->aux.name,

		      connector->base.kdev->kobj.name);



	ret = drm_dp_aux_register(&intel_dp->aux);

	if (ret < 0) {

		DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n",

			  name, ret);

		return;

			  intel_dp->aux.name, ret);

		kfree(intel_dp->aux.name);

		return ret;

	}



	ret = sysfs_create_link(&connector->base.kdev->kobj,

				&intel_dp->aux.ddc.dev.kobj,

				intel_dp->aux.ddc.dev.kobj.name);

	if (ret < 0) {

		DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret);

		drm_dp_aux_unregister(&intel_dp->aux);

		DRM_ERROR("sysfs_create_link() for %s failed (%d)\n",

			  intel_dp->aux.name, ret);

		intel_dp_aux_fini(intel_dp);

		return ret;

	}



	return 0;

}



static void
@@ -4771,7 +4781,7 @@ void intel_dp_encoder_destroy(struct drm_encoder *encoder) 
	struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);

	struct intel_dp *intel_dp = &intel_dig_port->dp;



	drm_dp_aux_unregister(&intel_dp->aux);

	intel_dp_aux_fini(intel_dp);

	intel_dp_mst_encoder_cleanup(intel_dig_port);

	if (is_edp(intel_dp)) {

		cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
@@ -5752,7 +5762,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, 
	struct drm_device *dev = intel_encoder->base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	enum port port = intel_dig_port->port;

	int type;

	int type, ret;



	intel_dp->pps_pipe = INVALID_PIPE;
@@ -5853,7 +5863,9 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, 
		pps_unlock(intel_dp);

	}



	intel_dp_aux_init(intel_dp, intel_connector);

	ret = intel_dp_aux_init(intel_dp, intel_connector);

	if (ret)

		goto fail;



	/* init MST on ports that can support it */

	if (HAS_DP_MST(dev) &&
@@ -5862,20 +5874,9 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, 
					  intel_connector->base.base.id);



	if (!intel_edp_init_connector(intel_dp, intel_connector)) {

		drm_dp_aux_unregister(&intel_dp->aux);

		if (is_edp(intel_dp)) {

			cancel_delayed_work_sync(&intel_dp->panel_vdd_work);

			/*

			 * vdd might still be enabled do to the delayed vdd off.

			 * Make sure vdd is actually turned off here.

			 */

			pps_lock(intel_dp);

			edp_panel_vdd_off_sync(intel_dp);

			pps_unlock(intel_dp);

		}

		drm_connector_unregister(connector);

		drm_connector_cleanup(connector);

		return false;

		intel_dp_aux_fini(intel_dp);

		intel_dp_mst_encoder_cleanup(intel_dig_port);

		goto fail;

	}



	intel_dp_add_properties(intel_dp, connector);
@@ -5892,6 +5893,22 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, 
	i915_debugfs_connector_add(connector);



	return true;



fail:

	if (is_edp(intel_dp)) {

		cancel_delayed_work_sync(&intel_dp->panel_vdd_work);

		/*

		 * vdd might still be enabled do to the delayed vdd off.

		 * Make sure vdd is actually turned off here.

		 */

		pps_lock(intel_dp);

		edp_panel_vdd_off_sync(intel_dp);

		pps_unlock(intel_dp);

	}

	drm_connector_unregister(connector);

	drm_connector_cleanup(connector);



	return false;

}



void