drm/radeon: start to document the functions r100.c
Still a lot more to do. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
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@ -65,6 +65,19 @@ MODULE_FIRMWARE(FIRMWARE_R520);
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#include "r100_track.h"
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/* This files gather functions specifics to:
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* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280
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* and others in some cases.
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*/
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/**
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* r100_wait_for_vblank - vblank wait asic callback.
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*
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* @rdev: radeon_device pointer
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* @crtc: crtc to wait for vblank on
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*
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* Wait for vblank on the requested crtc (r1xx-r4xx).
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*/
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void r100_wait_for_vblank(struct radeon_device *rdev, int crtc)
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{
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struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc];
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@ -99,22 +112,49 @@ void r100_wait_for_vblank(struct radeon_device *rdev, int crtc)
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}
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}
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/* This files gather functions specifics to:
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* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280
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/**
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* r100_pre_page_flip - pre-pageflip callback.
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*
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* @rdev: radeon_device pointer
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* @crtc: crtc to prepare for pageflip on
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*
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* Pre-pageflip callback (r1xx-r4xx).
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* Enables the pageflip irq (vblank irq).
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*/
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void r100_pre_page_flip(struct radeon_device *rdev, int crtc)
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{
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/* enable the pflip int */
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radeon_irq_kms_pflip_irq_get(rdev, crtc);
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}
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/**
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* r100_post_page_flip - pos-pageflip callback.
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*
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* @rdev: radeon_device pointer
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* @crtc: crtc to cleanup pageflip on
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*
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* Post-pageflip callback (r1xx-r4xx).
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* Disables the pageflip irq (vblank irq).
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*/
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void r100_post_page_flip(struct radeon_device *rdev, int crtc)
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{
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/* disable the pflip int */
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radeon_irq_kms_pflip_irq_put(rdev, crtc);
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}
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/**
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* r100_page_flip - pageflip callback.
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*
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* @rdev: radeon_device pointer
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* @crtc_id: crtc to cleanup pageflip on
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* @crtc_base: new address of the crtc (GPU MC address)
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*
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* Does the actual pageflip (r1xx-r4xx).
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* During vblank we take the crtc lock and wait for the update_pending
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* bit to go high, when it does, we release the lock, and allow the
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* double buffered update to take place.
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* Returns the current update pending status.
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*/
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u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
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{
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struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
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@ -141,6 +181,15 @@ u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
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return RREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET;
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}
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/**
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* r100_pm_get_dynpm_state - look up dynpm power state callback.
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*
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* @rdev: radeon_device pointer
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*
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* Look up the optimal power state based on the
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* current state of the GPU (r1xx-r5xx).
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* Used for dynpm only.
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*/
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void r100_pm_get_dynpm_state(struct radeon_device *rdev)
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{
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int i;
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@ -223,6 +272,15 @@ void r100_pm_get_dynpm_state(struct radeon_device *rdev)
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pcie_lanes);
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}
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/**
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* r100_pm_init_profile - Initialize power profiles callback.
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*
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* @rdev: radeon_device pointer
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*
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* Initialize the power states used in profile mode
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* (r1xx-r3xx).
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* Used for profile mode only.
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*/
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void r100_pm_init_profile(struct radeon_device *rdev)
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{
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/* default */
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@ -262,6 +320,14 @@ void r100_pm_init_profile(struct radeon_device *rdev)
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rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx = 0;
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}
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/**
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* r100_pm_misc - set additional pm hw parameters callback.
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*
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* @rdev: radeon_device pointer
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*
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* Set non-clock parameters associated with a power state
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* (voltage, pcie lanes, etc.) (r1xx-r4xx).
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*/
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void r100_pm_misc(struct radeon_device *rdev)
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{
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int requested_index = rdev->pm.requested_power_state_index;
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@ -353,6 +419,13 @@ void r100_pm_misc(struct radeon_device *rdev)
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}
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}
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/**
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* r100_pm_prepare - pre-power state change callback.
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*
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* @rdev: radeon_device pointer
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*
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* Prepare for a power state change (r1xx-r4xx).
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*/
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void r100_pm_prepare(struct radeon_device *rdev)
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{
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struct drm_device *ddev = rdev->ddev;
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@ -377,6 +450,13 @@ void r100_pm_prepare(struct radeon_device *rdev)
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}
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}
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/**
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* r100_pm_finish - post-power state change callback.
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*
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* @rdev: radeon_device pointer
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*
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* Clean up after a power state change (r1xx-r4xx).
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*/
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void r100_pm_finish(struct radeon_device *rdev)
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{
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struct drm_device *ddev = rdev->ddev;
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@ -401,6 +481,14 @@ void r100_pm_finish(struct radeon_device *rdev)
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}
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}
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/**
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* r100_gui_idle - gui idle callback.
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*
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* @rdev: radeon_device pointer
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*
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* Check of the GUI (2D/3D engines) are idle (r1xx-r5xx).
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* Returns true if idle, false if not.
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*/
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bool r100_gui_idle(struct radeon_device *rdev)
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{
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if (RREG32(RADEON_RBBM_STATUS) & RADEON_RBBM_ACTIVE)
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@ -410,6 +498,15 @@ bool r100_gui_idle(struct radeon_device *rdev)
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}
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/* hpd for digital panel detect/disconnect */
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/**
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* r100_hpd_sense - hpd sense callback.
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*
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* @rdev: radeon_device pointer
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* @hpd: hpd (hotplug detect) pin
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*
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* Checks if a digital monitor is connected (r1xx-r4xx).
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* Returns true if connected, false if not connected.
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*/
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bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
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{
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bool connected = false;
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@ -429,6 +526,14 @@ bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
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return connected;
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}
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/**
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* r100_hpd_set_polarity - hpd set polarity callback.
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*
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* @rdev: radeon_device pointer
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* @hpd: hpd (hotplug detect) pin
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*
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* Set the polarity of the hpd pin (r1xx-r4xx).
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*/
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void r100_hpd_set_polarity(struct radeon_device *rdev,
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enum radeon_hpd_id hpd)
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{
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}
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}
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/**
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* r100_hpd_init - hpd setup callback.
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*
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* @rdev: radeon_device pointer
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*
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* Setup the hpd pins used by the card (r1xx-r4xx).
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* Set the polarity, and enable the hpd interrupts.
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*/
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void r100_hpd_init(struct radeon_device *rdev)
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{
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struct drm_device *dev = rdev->ddev;
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radeon_irq_kms_enable_hpd(rdev, enable);
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}
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/**
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* r100_hpd_fini - hpd tear down callback.
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*
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* @rdev: radeon_device pointer
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*
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* Tear down the hpd pins used by the card (r1xx-r4xx).
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* Disable the hpd interrupts.
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*/
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void r100_hpd_fini(struct radeon_device *rdev)
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{
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struct drm_device *dev = rdev->ddev;
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