1 files changed, 220 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/dispnv04/i2c/encoder_i2c.h b/drivers/gpu/drm/nouveau/include/dispnv04/i2c/encoder_i2c.h
new file mode 100644
index 000000000000..31334aa90781
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/dispnv04/i2c/encoder_i2c.h
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2009 Francisco Jerez.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __NOUVEAU_ENCODER_I2C_H__
+#define __NOUVEAU_ENCODER_I2C_H__
+
+#include <linux/i2c.h>
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_encoder.h>
+
+/**
+ * struct nouveau_i2c_encoder_funcs - Entry points exposed by a I2C encoder driver
+ *
+ * Most of its members are analogous to the function pointers in
+ * &drm_encoder_helper_funcs and they can optionally be used to
+ * initialize the latter. Connector-like methods (e.g. @get_modes and
+ * @set_property) will typically be wrapped around and only be called
+ * if the encoder is the currently selected one for the connector.
+ */
+struct nouveau_i2c_encoder_funcs {
+	/**
+	 * @set_config: Initialize any encoder-specific modesetting parameters.
+	 * The meaning of the @params parameter is implementation dependent. It
+	 * will usually be a structure with DVO port data format settings or
+	 * timings. It's not required for the new parameters to take effect
+	 * until the next mode is set.
+	 */
+	void (*set_config)(struct drm_encoder *encoder,
+			   void *params);
+
+	/**
+	 * @destroy: Analogous to &drm_encoder_funcs @destroy callback.
+	 */
+	void (*destroy)(struct drm_encoder *encoder);
+
+	/**
+	 * @dpms: Analogous to &drm_encoder_helper_funcs @dpms callback.
+	 */
+	void (*dpms)(struct drm_encoder *encoder, int mode);
+
+	/**
+	 * @save: Save state. Wrapped by nouveau_i2c_encoder_save().
+	 */
+	void (*save)(struct drm_encoder *encoder);
+
+	/**
+	 * @restore: Restore state. Wrapped by nouveau_i2c_encoder_restore().
+	 */
+	void (*restore)(struct drm_encoder *encoder);
+
+	/**
+	 * @mode_fixup: Analogous to &drm_encoder_helper_funcs @mode_fixup
+	 * callback. Wrapped by nouveau_i2c_encoder_mode_fixup().
+	 */
+	bool (*mode_fixup)(struct drm_encoder *encoder,
+			   const struct drm_display_mode *mode,
+			   struct drm_display_mode *adjusted_mode);
+
+	/**
+	 * @mode_valid: Analogous to &drm_encoder_helper_funcs @mode_valid.
+	 */
+	int (*mode_valid)(struct drm_encoder *encoder,
+			  const struct drm_display_mode *mode);
+	/**
+	 * @mode_set: Analogous to &drm_encoder_helper_funcs @mode_set
+	 * callback.
+	 */
+	void (*mode_set)(struct drm_encoder *encoder,
+			 struct drm_display_mode *mode,
+			 struct drm_display_mode *adjusted_mode);
+
+	/**
+	 * @detect: Analogous to &drm_encoder_helper_funcs @detect
+	 * callback. Wrapped by nouveau_i2c_encoder_detect().
+	 */
+	enum drm_connector_status (*detect)(struct drm_encoder *encoder,
+					    struct drm_connector *connector);
+	/**
+	 * @get_modes: Get modes.
+	 */
+	int (*get_modes)(struct drm_encoder *encoder,
+			 struct drm_connector *connector);
+	/**
+	 * @create_resources: Create resources.
+	 */
+	int (*create_resources)(struct drm_encoder *encoder,
+				 struct drm_connector *connector);
+	/**
+	 * @set_property: Set property.
+	 */
+	int (*set_property)(struct drm_encoder *encoder,
+			    struct drm_connector *connector,
+			    struct drm_property *property,
+			    uint64_t val);
+};
+
+/**
+ * struct nouveau_i2c_encoder - I2C encoder struct
+ *
+ * A &nouveau_i2c_encoder has two sets of callbacks, @encoder_i2c_funcs and the
+ * ones in @base. The former are never actually called by the common
+ * CRTC code, it's just a convenience for splitting the encoder
+ * functions in an upper, GPU-specific layer and a (hopefully)
+ * GPU-agnostic lower layer: It's the GPU driver responsibility to
+ * call the nouveau_i2c_encoder methods when appropriate.
+ *
+ * nouveau_i2c_encoder_init() provides a way to get an implementation of
+ * this.
+ */
+struct nouveau_i2c_encoder {
+	/**
+	 * @base: DRM encoder object.
+	 */
+	struct drm_encoder base;
+
+	/**
+	 * @encoder_i2c_funcs: I2C encoder callbacks.
+	 */
+	const struct nouveau_i2c_encoder_funcs *encoder_i2c_funcs;
+
+	/**
+	 * @encoder_i2c_priv: I2C encoder private data.
+	 */
+	void *encoder_i2c_priv;
+
+	/**
+	 * @i2c_client: corresponding I2C client structure
+	 */
+	struct i2c_client *i2c_client;
+};
+
+#define to_encoder_i2c(x) container_of((x), struct nouveau_i2c_encoder, base)
+
+int nouveau_i2c_encoder_init(struct drm_device *dev,
+			     struct nouveau_i2c_encoder *encoder,
+			     struct i2c_adapter *adap,
+			     const struct i2c_board_info *info);
+
+static inline const struct nouveau_i2c_encoder_funcs *
+get_encoder_i2c_funcs(struct drm_encoder *enc)
+{
+	return to_encoder_i2c(enc)->encoder_i2c_funcs;
+}
+
+/**
+ * struct nouveau_i2c_encoder_driver
+ *
+ * Describes a device driver for an encoder connected to the GPU through an I2C
+ * bus.
+ */
+struct nouveau_i2c_encoder_driver {
+	/**
+	 * @i2c_driver: I2C device driver description.
+	 */
+	struct i2c_driver i2c_driver;
+
+	/**
+	 * @encoder_init: Callback to allocate any per-encoder data structures
+	 * and to initialize the @encoder_i2c_funcs and (optionally) @encoder_i2c_priv
+	 * members of @encoder.
+	 */
+	int (*encoder_init)(struct i2c_client *client,
+			    struct drm_device *dev,
+			    struct nouveau_i2c_encoder *encoder);
+
+};
+
+#define to_nouveau_i2c_encoder_driver(x) container_of((x),			\
+						  struct nouveau_i2c_encoder_driver, \
+						  i2c_driver)
+
+/**
+ * nouveau_i2c_encoder_get_client - Get the I2C client corresponding to an encoder
+ * @encoder: The encoder
+ */
+static inline struct i2c_client *nouveau_i2c_encoder_get_client(struct drm_encoder *encoder)
+{
+	return to_encoder_i2c(encoder)->i2c_client;
+}
+
+void nouveau_i2c_encoder_destroy(struct drm_encoder *encoder);
+
+/*
+ * Wrapper fxns which can be plugged in to drm_encoder_helper_funcs:
+ */
+
+bool nouveau_i2c_encoder_mode_fixup(struct drm_encoder *encoder,
+				    const struct drm_display_mode *mode,
+				    struct drm_display_mode *adjusted_mode);
+enum drm_connector_status nouveau_i2c_encoder_detect(struct drm_encoder *encoder,
+						     struct drm_connector *connector);
+void nouveau_i2c_encoder_save(struct drm_encoder *encoder);
+void nouveau_i2c_encoder_restore(struct drm_encoder *encoder);
+
+
+#endif