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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 <drm/drmP.h>
  28. #include <drm/drm_crtc.h>
  29. #include "intel_drv.h"
  30.  
  31. struct intel_dvo_device {
  32.         const char *name;
  33.         int type;
  34.         /* DVOA/B/C output register */
  35.         u32 dvo_reg;
  36.         /* GPIO register used for i2c bus to control this device */
  37.         u32 gpio;
  38.         int slave_addr;
  39.  
  40.         const struct intel_dvo_dev_ops *dev_ops;
  41.         void *dev_priv;
  42.         struct i2c_adapter *i2c_bus;
  43. };
  44.  
  45. struct intel_dvo_dev_ops {
  46.         /*
  47.          * Initialize the device at startup time.
  48.          * Returns NULL if the device does not exist.
  49.          */
  50.         bool (*init)(struct intel_dvo_device *dvo,
  51.                      struct i2c_adapter *i2cbus);
  52.  
  53.         /*
  54.          * Called to allow the output a chance to create properties after the
  55.          * RandR objects have been created.
  56.          */
  57.         void (*create_resources)(struct intel_dvo_device *dvo);
  58.  
  59.         /*
  60.          * Turn on/off output.
  61.          *
  62.          * Because none of our dvo drivers support an intermediate power levels,
  63.          * we don't expose this in the interfac.
  64.          */
  65.         void (*dpms)(struct intel_dvo_device *dvo, bool enable);
  66.  
  67.         /*
  68.          * Callback for testing a video mode for a given output.
  69.          *
  70.          * This function should only check for cases where a mode can't
  71.          * be supported on the output specifically, and not represent
  72.          * generic CRTC limitations.
  73.          *
  74.          * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
  75.          */
  76.         int (*mode_valid)(struct intel_dvo_device *dvo,
  77.                           struct drm_display_mode *mode);
  78.  
  79.         /*
  80.          * Callback to adjust the mode to be set in the CRTC.
  81.          *
  82.          * This allows an output to adjust the clock or even the entire set of
  83.          * timings, which is used for panels with fixed timings or for
  84.          * buses with clock limitations.
  85.          */
  86.         bool (*mode_fixup)(struct intel_dvo_device *dvo,
  87.                            const struct drm_display_mode *mode,
  88.                            struct drm_display_mode *adjusted_mode);
  89.  
  90.         /*
  91.          * Callback for preparing mode changes on an output
  92.          */
  93.         void (*prepare)(struct intel_dvo_device *dvo);
  94.  
  95.         /*
  96.          * Callback for committing mode changes on an output
  97.          */
  98.         void (*commit)(struct intel_dvo_device *dvo);
  99.  
  100.         /*
  101.          * Callback for setting up a video mode after fixups have been made.
  102.          *
  103.          * This is only called while the output is disabled.  The dpms callback
  104.          * must be all that's necessary for the output, to turn the output on
  105.          * after this function is called.
  106.          */
  107.         void (*mode_set)(struct intel_dvo_device *dvo,
  108.                          struct drm_display_mode *mode,
  109.                          struct drm_display_mode *adjusted_mode);
  110.  
  111.         /*
  112.          * Probe for a connected output, and return detect_status.
  113.          */
  114.         enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);
  115.  
  116.         /*
  117.          * Probe the current hw status, returning true if the connected output
  118.          * is active.
  119.          */
  120.         bool (*get_hw_state)(struct intel_dvo_device *dev);
  121.  
  122.         /**
  123.          * Query the device for the modes it provides.
  124.          *
  125.          * This function may also update MonInfo, mm_width, and mm_height.
  126.          *
  127.          * \return singly-linked list of modes or NULL if no modes found.
  128.          */
  129.         struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo);
  130.  
  131.         /**
  132.          * Clean up driver-specific bits of the output
  133.          */
  134.         void (*destroy) (struct intel_dvo_device *dvo);
  135.  
  136.         /**
  137.          * Debugging hook to dump device registers to log file
  138.          */
  139.         void (*dump_regs)(struct intel_dvo_device *dvo);
  140. };
  141.  
  142. extern struct intel_dvo_dev_ops sil164_ops;
  143. extern struct intel_dvo_dev_ops ch7xxx_ops;
  144. extern struct intel_dvo_dev_ops ivch_ops;
  145. extern struct intel_dvo_dev_ops tfp410_ops;
  146. extern struct intel_dvo_dev_ops ch7017_ops;
  147. extern struct intel_dvo_dev_ops ns2501_ops;
  148.  
  149. #endif /* _INTEL_DVO_H */
  150.