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  1. /*
  2.  * Copyright © 2006 Eric Anholt
  3.  *
  4.  * Permission to use, copy, modify, distribute, and sell this software and its
  5.  * documentation for any purpose is hereby granted without fee, provided that
  6.  * the above copyright notice appear in all copies and that both that copyright
  7.  * notice and this permission notice appear in supporting documentation, and
  8.  * that the name of the copyright holders not be used in advertising or
  9.  * publicity pertaining to distribution of the software without specific,
  10.  * written prior permission.  The copyright holders make no representations
  11.  * about the suitability of this software for any purpose.  It is provided "as
  12.  * is" without express or implied warranty.
  13.  *
  14.  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15.  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16.  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17.  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18.  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19.  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20.  * OF THIS SOFTWARE.
  21.  */
  22.  
  23. #ifndef _INTEL_DVO_H
  24. #define _INTEL_DVO_H
  25.  
  26. #include <linux/i2c.h>
  27. #include "drmP.h"
  28. #include "drm.h"
  29. #include "drm_crtc.h"
  30. #include "intel_drv.h"
  31.  
  32. struct intel_dvo_device {
  33.         const char *name;
  34.         int type;
  35.         /* DVOA/B/C output register */
  36.         u32 dvo_reg;
  37.         /* GPIO register used for i2c bus to control this device */
  38.         u32 gpio;
  39.         int slave_addr;
  40.  
  41.         const struct intel_dvo_dev_ops *dev_ops;
  42.         void *dev_priv;
  43.         struct i2c_adapter *i2c_bus;
  44. };
  45.  
  46. struct intel_dvo_dev_ops {
  47.         /*
  48.          * Initialize the device at startup time.
  49.          * Returns NULL if the device does not exist.
  50.          */
  51.         bool (*init)(struct intel_dvo_device *dvo,
  52.                      struct i2c_adapter *i2cbus);
  53.  
  54.         /*
  55.          * Called to allow the output a chance to create properties after the
  56.          * RandR objects have been created.
  57.          */
  58.         void (*create_resources)(struct intel_dvo_device *dvo);
  59.  
  60.         /*
  61.          * Turn on/off output or set intermediate power levels if available.
  62.          *
  63.          * Unsupported intermediate modes drop to the lower power setting.
  64.          * If the  mode is DPMSModeOff, the output must be disabled,
  65.          * as the DPLL may be disabled afterwards.
  66.          */
  67.         void (*dpms)(struct intel_dvo_device *dvo, int mode);
  68.  
  69.         /*
  70.          * Callback for testing a video mode for a given output.
  71.          *
  72.          * This function should only check for cases where a mode can't
  73.          * be supported on the output specifically, and not represent
  74.          * generic CRTC limitations.
  75.          *
  76.          * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
  77.          */
  78.         int (*mode_valid)(struct intel_dvo_device *dvo,
  79.                           struct drm_display_mode *mode);
  80.  
  81.         /*
  82.          * Callback to adjust the mode to be set in the CRTC.
  83.          *
  84.          * This allows an output to adjust the clock or even the entire set of
  85.          * timings, which is used for panels with fixed timings or for
  86.          * buses with clock limitations.
  87.          */
  88.         bool (*mode_fixup)(struct intel_dvo_device *dvo,
  89.                            struct drm_display_mode *mode,
  90.                            struct drm_display_mode *adjusted_mode);
  91.  
  92.         /*
  93.          * Callback for preparing mode changes on an output
  94.          */
  95.         void (*prepare)(struct intel_dvo_device *dvo);
  96.  
  97.         /*
  98.          * Callback for committing mode changes on an output
  99.          */
  100.         void (*commit)(struct intel_dvo_device *dvo);
  101.  
  102.         /*
  103.          * Callback for setting up a video mode after fixups have been made.
  104.          *
  105.          * This is only called while the output is disabled.  The dpms callback
  106.          * must be all that's necessary for the output, to turn the output on
  107.          * after this function is called.
  108.          */
  109.         void (*mode_set)(struct intel_dvo_device *dvo,
  110.                          struct drm_display_mode *mode,
  111.                          struct drm_display_mode *adjusted_mode);
  112.  
  113.         /*
  114.          * Probe for a connected output, and return detect_status.
  115.          */
  116.         enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);
  117.  
  118.         /**
  119.          * Query the device for the modes it provides.
  120.          *
  121.          * This function may also update MonInfo, mm_width, and mm_height.
  122.          *
  123.          * \return singly-linked list of modes or NULL if no modes found.
  124.          */
  125.         struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo);
  126.  
  127.         /**
  128.          * Clean up driver-specific bits of the output
  129.          */
  130.         void (*destroy) (struct intel_dvo_device *dvo);
  131.  
  132.         /**
  133.          * Debugging hook to dump device registers to log file
  134.          */
  135.         void (*dump_regs)(struct intel_dvo_device *dvo);
  136. };
  137.  
  138. extern struct intel_dvo_dev_ops sil164_ops;
  139. extern struct intel_dvo_dev_ops ch7xxx_ops;
  140. extern struct intel_dvo_dev_ops ivch_ops;
  141. extern struct intel_dvo_dev_ops tfp410_ops;
  142. extern struct intel_dvo_dev_ops ch7017_ops;
  143.  
  144. #endif /* _INTEL_DVO_H */
  145.