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/*
* 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 */
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