linux-stable/drivers/gpu/drm/i915/dvo.h
Julia Lawall 0f55564406 drm/i915: constify intel_dvo_dev_ops structures
The intel_dvo_dev_ops structures are never modified, so declare them as
const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449608127-21715-1-git-send-email-Julia.Lawall@lip6.fr
2015-12-09 08:21:10 +01:00

139 lines
4.3 KiB
C

/*
* 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 <drm/drmP.h>
#include <drm/drm_crtc.h>
#include "intel_drv.h"
struct intel_dvo_device {
const char *name;
int type;
/* DVOA/B/C output register */
i915_reg_t dvo_reg;
i915_reg_t dvo_srcdim_reg;
/* GPIO register used for i2c bus to control this device */
u32 gpio;
int slave_addr;
const struct intel_dvo_dev_ops *dev_ops;
void *dev_priv;
struct i2c_adapter *i2c_bus;
};
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 i2c_adapter *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.
*
* Because none of our dvo drivers support an intermediate power levels,
* we don't expose this in the interfac.
*/
void (*dpms)(struct intel_dvo_device *dvo, bool enable);
/*
* 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 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,
const struct drm_display_mode *mode,
const 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);
/*
* Probe the current hw status, returning true if the connected output
* is active.
*/
bool (*get_hw_state)(struct intel_dvo_device *dev);
/**
* 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);
};
extern const struct intel_dvo_dev_ops sil164_ops;
extern const struct intel_dvo_dev_ops ch7xxx_ops;
extern const struct intel_dvo_dev_ops ivch_ops;
extern const struct intel_dvo_dev_ops tfp410_ops;
extern const struct intel_dvo_dev_ops ch7017_ops;
extern const struct intel_dvo_dev_ops ns2501_ops;
#endif /* _INTEL_DVO_H */