BlueGreycalmElegant

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• This comparison shows the changes necessary to convert path

  → /drivers/video/drm/drm_bridge.c @ 6936

  → /drivers/video/drm/drm_bridge.c @ 6937

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Regard whitespace Rev 6936 → Rev 6937

/drivers/video/drm/drm_bridge.c
31,11 → 31,11
/**
* DOC: overview
*
* drm_bridge represents a device that hangs on to an encoder. These are handy
* when a regular drm_encoder entity isn't enough to represent the entire
* struct &drm_bridge represents a device that hangs on to an encoder. These are
* handy when a regular &drm_encoder entity isn't enough to represent the entire
* encoder chain.
*
* A bridge is always associated to a single drm_encoder at a time, but can be
* A bridge is always attached to a single &drm_encoder at a time, but can be
* either connected to it directly, or through an intermediate bridge:
*
* encoder ---> bridge B ---> bridge A
46,11 → 46,16
* The driver using the bridge is responsible to make the associations between
* the encoder and bridges. Once these links are made, the bridges will
* participate along with encoder functions to perform mode_set/enable/disable
* through the ops provided in drm_bridge_funcs.
* through the ops provided in &drm_bridge_funcs.
*
* drm_bridge, like drm_panel, aren't drm_mode_object entities like planes,
* crtcs, encoders or connectors. They just provide additional hooks to get the
* desired output at the end of the encoder chain.
* CRTCs, encoders or connectors and hence are not visible to userspace. They
* just provide additional hooks to get the desired output at the end of the
* encoder chain.
*
* Bridges can also be chained up using the next pointer in struct &drm_bridge.
*
* Both legacy CRTC helpers and the new atomic modeset helpers support bridges.
*/
static DEFINE_MUTEX(bridge_lock);
122,34 → 127,12
/**
* DOC: bridge callbacks
*
* The drm_bridge_funcs ops are populated by the bridge driver. The drm
* internals(atomic and crtc helpers) use the helpers defined in drm_bridge.c
* These helpers call a specific drm_bridge_funcs op for all the bridges
* The &drm_bridge_funcs ops are populated by the bridge driver. The DRM
* internals (atomic and CRTC helpers) use the helpers defined in drm_bridge.c
* These helpers call a specific &drm_bridge_funcs op for all the bridges
* during encoder configuration.
*
* When creating a bridge driver, one can implement drm_bridge_funcs op with
* the help of these rough rules:
*
* pre_enable: this contains things needed to be done for the bridge before
* its clock and timings are enabled by its source. For a bridge, its source
* is generally the encoder or bridge just before it in the encoder chain.
*
* enable: this contains things needed to be done for the bridge once its
* source is enabled. In other words, enable is called once the source is
* ready with clock and timing needed by the bridge.
*
* disable: this contains things needed to be done for the bridge assuming
* that its source is still enabled, i.e. clock and timings are still on.
*
* post_disable: this contains things needed to be done for the bridge once
* its source is disabled, i.e. once clocks and timings are off.
*
* mode_fixup: this should fixup the given mode for the bridge. It is called
* after the encoder's mode fixup. mode_fixup can also reject a mode completely
* if it's unsuitable for the hardware.
*
* mode_set: this sets up the mode for the bridge. It assumes that its source
* (an encoder or a bridge) has set the mode too.
* For detailed specification of the bridge callbacks see &drm_bridge_funcs.
*/
/**
159,7 → 142,7
* @mode: desired mode to be set for the bridge
* @adjusted_mode: updated mode that works for this bridge
*
* Calls 'mode_fixup' drm_bridge_funcs op for all the bridges in the
* Calls ->mode_fixup() &drm_bridge_funcs op for all the bridges in the
* encoder chain, starting from the first bridge to the last.
*
* Note: the bridge passed should be the one closest to the encoder
186,11 → 169,11
EXPORT_SYMBOL(drm_bridge_mode_fixup);
/**
* drm_bridge_disable - calls 'disable' drm_bridge_funcs op for all
* drm_bridge_disable - calls ->disable() &drm_bridge_funcs op for all
* bridges in the encoder chain.
* @bridge: bridge control structure
*
* Calls 'disable' drm_bridge_funcs op for all the bridges in the encoder
* Calls ->disable() &drm_bridge_funcs op for all the bridges in the encoder
* chain, starting from the last bridge to the first. These are called before
* calling the encoder's prepare op.
*
208,11 → 191,11
EXPORT_SYMBOL(drm_bridge_disable);
/**
* drm_bridge_post_disable - calls 'post_disable' drm_bridge_funcs op for
* drm_bridge_post_disable - calls ->post_disable() &drm_bridge_funcs op for
* all bridges in the encoder chain.
* @bridge: bridge control structure
*
* Calls 'post_disable' drm_bridge_funcs op for all the bridges in the
* Calls ->post_disable() &drm_bridge_funcs op for all the bridges in the
* encoder chain, starting from the first bridge to the last. These are called
* after completing the encoder's prepare op.
*
236,7 → 219,7
* @mode: desired mode to be set for the bridge
* @adjusted_mode: updated mode that works for this bridge
*
* Calls 'mode_set' drm_bridge_funcs op for all the bridges in the
* Calls ->mode_set() &drm_bridge_funcs op for all the bridges in the
* encoder chain, starting from the first bridge to the last.
*
* Note: the bridge passed should be the one closest to the encoder
256,11 → 239,11
EXPORT_SYMBOL(drm_bridge_mode_set);
/**
* drm_bridge_pre_enable - calls 'pre_enable' drm_bridge_funcs op for all
* drm_bridge_pre_enable - calls ->pre_enable() &drm_bridge_funcs op for all
* bridges in the encoder chain.
* @bridge: bridge control structure
*
* Calls 'pre_enable' drm_bridge_funcs op for all the bridges in the encoder
* Calls ->pre_enable() &drm_bridge_funcs op for all the bridges in the encoder
* chain, starting from the last bridge to the first. These are called
* before calling the encoder's commit op.
*
278,11 → 261,11
EXPORT_SYMBOL(drm_bridge_pre_enable);
/**
* drm_bridge_enable - calls 'enable' drm_bridge_funcs op for all bridges
* drm_bridge_enable - calls ->enable() &drm_bridge_funcs op for all bridges
* in the encoder chain.
* @bridge: bridge control structure
*
* Calls 'enable' drm_bridge_funcs op for all the bridges in the encoder
* Calls ->enable() &drm_bridge_funcs op for all the bridges in the encoder
* chain, starting from the first bridge to the last. These are called
* after completing the encoder's commit op.
*