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Diffstat (limited to 'drivers/gpu/drm/i915/dvo.h')
| -rw-r--r-- | drivers/gpu/drm/i915/dvo.h | 157 |
1 files changed, 157 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..e747ac42fe3a --- /dev/null +++ b/drivers/gpu/drm/i915/dvo.h @@ -0,0 +1,157 @@ +/* + * 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); +}; + +extern struct intel_dvo_dev_ops sil164_ops; +extern struct intel_dvo_dev_ops ch7xxx_ops; +extern struct intel_dvo_dev_ops ivch_ops; +extern struct intel_dvo_dev_ops tfp410_ops; +extern struct intel_dvo_dev_ops ch7017_ops; + +#endif /* _INTEL_DVO_H */ |