drm: remove I2C_CLASS_DDC support

After removal of the legacy EEPROM driver and I2C_CLASS_DDC support in
olpc_dcon there's no i2c client driver left supporting I2C_CLASS_DDC.
Class-based device auto-detection is a legacy mechanism and shouldn't
be used in new code. So we can remove this class completely now.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

drivers/gpu/drm/amd/amdgpu/amdgpu_i2c.c

@@ -175,7 +175,6 @@ struct amdgpu_i2c_chan *amdgpu_i2c_create(struct drm_device *dev,
 
 	i2c->rec = *rec;
 	i2c->adapter.owner = THIS_MODULE;
-	i2c->adapter.class = I2C_CLASS_DDC;
 	i2c->adapter.dev.parent = dev->dev;
 	i2c->dev = dev;
 	i2c_set_adapdata(&i2c->adapter, i2c);

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -7533,7 +7533,6 @@ create_i2c(struct ddc_service *ddc_service,
 	if (!i2c)
 		return NULL;
 	i2c->base.owner = THIS_MODULE;
-	i2c->base.class = I2C_CLASS_DDC;
 	i2c->base.dev.parent = &adev->pdev->dev;
 	i2c->base.algo = &amdgpu_dm_i2c_algo;
 	snprintf(i2c->base.name, sizeof(i2c->base.name), "AMDGPU DM i2c hw bus %d", link_index);

drivers/gpu/drm/ast/ast_i2c.c

@@ -120,7 +120,6 @@ struct ast_i2c_chan *ast_i2c_create(struct drm_device *dev)
 		return NULL;
 
 	i2c->adapter.owner = THIS_MODULE;
-	i2c->adapter.class = I2C_CLASS_DDC;
 	i2c->adapter.dev.parent = dev->dev;
 	i2c->dev = dev;
 	i2c_set_adapdata(&i2c->adapter, i2c);

drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

@@ -515,7 +515,6 @@ static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi)
 	init_completion(&i2c->cmp);
 
 	adap = &i2c->adap;
-	adap->class = I2C_CLASS_DDC;
 	adap->owner = THIS_MODULE;
 	adap->dev.parent = hdmi->dev;
 	adap->algo = &dw_hdmi_algorithm;

drivers/gpu/drm/display/drm_dp_helper.c

@@ -2102,7 +2102,6 @@ int drm_dp_aux_register(struct drm_dp_aux *aux)
 	if (!aux->ddc.algo)
 		drm_dp_aux_init(aux);
 
-	aux->ddc.class = I2C_CLASS_DDC;
 	aux->ddc.owner = THIS_MODULE;
 	aux->ddc.dev.parent = aux->dev;
 

drivers/gpu/drm/display/drm_dp_mst_topology.c

@@ -5803,7 +5803,6 @@ static int drm_dp_mst_register_i2c_bus(struct drm_dp_mst_port *port)
 	aux->ddc.algo_data = aux;
 	aux->ddc.retries = 3;
 
-	aux->ddc.class = I2C_CLASS_DDC;
 	aux->ddc.owner = THIS_MODULE;
 	/* FIXME: set the kdev of the port's connector as parent */
 	aux->ddc.dev.parent = parent_dev;

drivers/gpu/drm/gma500/cdv_intel_dp.c

@@ -855,7 +855,6 @@ cdv_intel_dp_i2c_init(struct gma_connector *connector,
 
 	memset(&intel_dp->adapter, '\0', sizeof (intel_dp->adapter));
 	intel_dp->adapter.owner = THIS_MODULE;
-	intel_dp->adapter.class = I2C_CLASS_DDC;
 	strncpy (intel_dp->adapter.name, name, sizeof(intel_dp->adapter.name) - 1);
 	intel_dp->adapter.name[sizeof(intel_dp->adapter.name) - 1] = '\0';
 	intel_dp->adapter.algo_data = &intel_dp->algo;

drivers/gpu/drm/gma500/intel_gmbus.c

@@ -411,7 +411,6 @@ int gma_intel_setup_gmbus(struct drm_device *dev)
 		struct intel_gmbus *bus = &dev_priv->gmbus[i];
 
 		bus->adapter.owner = THIS_MODULE;
-		bus->adapter.class = I2C_CLASS_DDC;
 		snprintf(bus->adapter.name,
 			 sizeof(bus->adapter.name),
 			 "gma500 gmbus %s",

drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c

@@ -168,7 +168,6 @@ static struct i2c_adapter oaktrail_hdmi_i2c_adapter = {
 	.name		= "oaktrail_hdmi_i2c",
 	.nr		= 3,
 	.owner		= THIS_MODULE,
-	.class		= I2C_CLASS_DDC,
 	.algo		= &oaktrail_hdmi_i2c_algorithm,
 };
 

drivers/gpu/drm/gma500/psb_intel_sdvo.c

@@ -2426,7 +2426,6 @@ psb_intel_sdvo_init_ddc_proxy(struct psb_intel_sdvo *sdvo,
 			  struct drm_device *dev)
 {
 	sdvo->ddc.owner = THIS_MODULE;
-	sdvo->ddc.class = I2C_CLASS_DDC;
 	snprintf(sdvo->ddc.name, I2C_NAME_SIZE, "SDVO DDC proxy");
 	sdvo->ddc.dev.parent = dev->dev;
 	sdvo->ddc.algo_data = sdvo;

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c

@@ -81,7 +81,6 @@ int hibmc_ddc_create(struct drm_device *drm_dev,
 		     struct hibmc_connector *connector)
 {
 	connector->adapter.owner = THIS_MODULE;
-	connector->adapter.class = I2C_CLASS_DDC;
 	snprintf(connector->adapter.name, I2C_NAME_SIZE, "HIS i2c bit bus");
 	connector->adapter.dev.parent = drm_dev->dev;
 	i2c_set_adapdata(&connector->adapter, connector);

drivers/gpu/drm/i915/display/intel_gmbus.c

@@ -899,7 +899,6 @@ int intel_gmbus_setup(struct drm_i915_private *i915)
 		}
 
 		bus->adapter.owner = THIS_MODULE;
-		bus->adapter.class = I2C_CLASS_DDC;
 		snprintf(bus->adapter.name,
 			 sizeof(bus->adapter.name),
 			 "i915 gmbus %s", gmbus_pin->name);

drivers/gpu/drm/i915/display/intel_sdvo.c

@@ -3311,7 +3311,6 @@ intel_sdvo_init_ddc_proxy(struct intel_sdvo_ddc *ddc,
 	ddc->ddc_bus = ddc_bus;
 
 	ddc->ddc.owner = THIS_MODULE;
-	ddc->ddc.class = I2C_CLASS_DDC;
 	snprintf(ddc->ddc.name, I2C_NAME_SIZE, "SDVO %c DDC%d",
 		 port_name(sdvo->base.port), ddc_bus);
 	ddc->ddc.dev.parent = &pdev->dev;

drivers/gpu/drm/loongson/lsdc_i2c.c

@@ -154,7 +154,6 @@ int lsdc_create_i2c_chan(struct drm_device *ddev,
 	adapter = &li2c->adapter;
 	adapter->algo_data = &li2c->bit;
 	adapter->owner = THIS_MODULE;
-	adapter->class = I2C_CLASS_DDC;
 	adapter->dev.parent = ddev->dev;
 	adapter->nr = -1;
 

drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c

@@ -297,7 +297,6 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
 
 	strscpy(ddc->adap.name, "mediatek-hdmi-ddc", sizeof(ddc->adap.name));
 	ddc->adap.owner = THIS_MODULE;
-	ddc->adap.class = I2C_CLASS_DDC;
 	ddc->adap.algo = &mtk_hdmi_ddc_algorithm;
 	ddc->adap.retries = 3;
 	ddc->adap.dev.of_node = dev->of_node;

drivers/gpu/drm/mgag200/mgag200_i2c.c

@@ -106,7 +106,6 @@ int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
 	i2c->data = BIT(info->i2c.data_bit);
 	i2c->clock = BIT(info->i2c.clock_bit);
 	i2c->adapter.owner = THIS_MODULE;
-	i2c->adapter.class = I2C_CLASS_DDC;
 	i2c->adapter.dev.parent = dev->dev;
 	i2c->dev = dev;
 	i2c_set_adapdata(&i2c->adapter, i2c);

drivers/gpu/drm/msm/hdmi/hdmi_i2c.c

@@ -249,7 +249,6 @@ struct i2c_adapter *msm_hdmi_i2c_init(struct hdmi *hdmi)
 
 
 	i2c->owner = THIS_MODULE;
-	i2c->class = I2C_CLASS_DDC;
 	snprintf(i2c->name, sizeof(i2c->name), "msm hdmi i2c");
 	i2c->dev.parent = &hdmi->pdev->dev;
 	i2c->algo = &msm_hdmi_i2c_algorithm;

drivers/gpu/drm/radeon/radeon_i2c.c

@@ -918,7 +918,6 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
 
 	i2c->rec = *rec;
 	i2c->adapter.owner = THIS_MODULE;
-	i2c->adapter.class = I2C_CLASS_DDC;
 	i2c->adapter.dev.parent = dev->dev;
 	i2c->dev = dev;
 	i2c_set_adapdata(&i2c->adapter, i2c);

drivers/gpu/drm/rockchip/inno_hdmi.c

@@ -793,7 +793,6 @@ static struct i2c_adapter *inno_hdmi_i2c_adapter(struct inno_hdmi *hdmi)
 	init_completion(&i2c->cmp);
 
 	adap = &i2c->adap;
-	adap->class = I2C_CLASS_DDC;
 	adap->owner = THIS_MODULE;
 	adap->dev.parent = hdmi->dev;
 	adap->dev.of_node = hdmi->dev->of_node;

drivers/gpu/drm/rockchip/rk3066_hdmi.c

@@ -725,7 +725,6 @@ static struct i2c_adapter *rk3066_hdmi_i2c_adapter(struct rk3066_hdmi *hdmi)
 	init_completion(&i2c->cmpltn);
 
 	adap = &i2c->adap;
-	adap->class = I2C_CLASS_DDC;
 	adap->owner = THIS_MODULE;
 	adap->dev.parent = hdmi->dev;
 	adap->dev.of_node = hdmi->dev->of_node;

drivers/gpu/drm/sun4i/sun4i_hdmi_i2c.c

@@ -302,7 +302,6 @@ int sun4i_hdmi_i2c_create(struct device *dev, struct sun4i_hdmi *hdmi)
 		return -ENOMEM;
 
 	adap->owner = THIS_MODULE;
-	adap->class = I2C_CLASS_DDC;
 	adap->algo = &sun4i_hdmi_i2c_algorithm;
 	strscpy(adap->name, "sun4i_hdmi_i2c adapter", sizeof(adap->name));
 	i2c_set_adapdata(adap, hdmi);