1 files changed, 151 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/dvo.h b/drivers/gpu/drm/i915/dvo.h
new file mode 100644
index 000000000000..e80866c5e1ae
--- /dev/null
+++ b/drivers/gpu/drm/i915/dvo.h
@@ -0,0 +1,151 @@
+/*
+ * Copyright © 2006 Eric Anholt
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _INTEL_DVO_H
+#define _INTEL_DVO_H
+
+#include <linux/i2c.h>
+#include "drmP.h"
+#include "drm.h"
+#include "drm_crtc.h"
+#include "intel_drv.h"
+
+struct intel_dvo_device {
+        char *name;
+        int type;
+        /* DVOA/B/C output register */
+        u32 dvo_reg;
+        /* GPIO register used for i2c bus to control this device */
+        u32 gpio;
+        int slave_addr;
+        struct intel_i2c_chan *i2c_bus;
+
+        const struct intel_dvo_dev_ops *dev_ops;
+        void *dev_priv;
+
+        struct drm_display_mode *panel_fixed_mode;
+        bool panel_wants_dither;
+};
+
+struct intel_dvo_dev_ops {
+        /*
+         * Initialize the device at startup time.
+         * Returns NULL if the device does not exist.
+         */
+        bool (*init)(struct intel_dvo_device *dvo,
+                     struct intel_i2c_chan *i2cbus);
+
+        /*
+         * Called to allow the output a chance to create properties after the
+         * RandR objects have been created.
+         */
+        void (*create_resources)(struct intel_dvo_device *dvo);
+
+        /*
+         * Turn on/off output or set intermediate power levels if available.
+         *
+         * Unsupported intermediate modes drop to the lower power setting.
+         * If the  mode is DPMSModeOff, the output must be disabled,
+         * as the DPLL may be disabled afterwards.
+         */
+        void (*dpms)(struct intel_dvo_device *dvo, int mode);
+
+        /*
+         * Saves the output's state for restoration on VT switch.
+         */
+        void (*save)(struct intel_dvo_device *dvo);
+
+        /*
+         * Restore's the output's state at VT switch.
+         */
+        void (*restore)(struct intel_dvo_device *dvo);
+
+        /*
+         * Callback for testing a video mode for a given output.
+         *
+         * This function should only check for cases where a mode can't
+         * be supported on the output specifically, and not represent
+         * generic CRTC limitations.
+         *
+         * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
+         */
+        int (*mode_valid)(struct intel_dvo_device *dvo,
+                          struct drm_display_mode *mode);
+
+        /*
+         * Callback to adjust the mode to be set in the CRTC.
+         *
+         * This allows an output to adjust the clock or even the entire set of
+         * timings, which is used for panels with fixed timings or for
+         * buses with clock limitations.
+         */
+        bool (*mode_fixup)(struct intel_dvo_device *dvo,
+                           struct drm_display_mode *mode,
+                           struct drm_display_mode *adjusted_mode);
+
+        /*
+         * Callback for preparing mode changes on an output
+         */
+        void (*prepare)(struct intel_dvo_device *dvo);
+
+        /*
+         * Callback for committing mode changes on an output
+         */
+        void (*commit)(struct intel_dvo_device *dvo);
+
+        /*
+         * Callback for setting up a video mode after fixups have been made.
+         *
+         * This is only called while the output is disabled.  The dpms callback
+         * must be all that's necessary for the output, to turn the output on
+         * after this function is called.
+         */
+        void (*mode_set)(struct intel_dvo_device *dvo,
+                         struct drm_display_mode *mode,
+                         struct drm_display_mode *adjusted_mode);
+
+        /*
+         * Probe for a connected output, and return detect_status.
+         */
+        enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);
+
+        /**
+         * Query the device for the modes it provides.
+         *
+         * This function may also update MonInfo, mm_width, and mm_height.
+         *
+         * \return singly-linked list of modes or NULL if no modes found.
+         */
+        struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo);
+
+        /**
+         * Clean up driver-specific bits of the output
+         */
+        void (*destroy) (struct intel_dvo_device *dvo);
+
+        /**
+         * Debugging hook to dump device registers to log file
+         */
+        void (*dump_regs)(struct intel_dvo_device *dvo);
+};
+
+#endif /* _INTEL_DVO_H */