From: Alex Deucher alexander.deucher@amd.com
Still a lot more to do.
Signed-off-by: Alex Deucher alexander.deucher@amd.com Reviewed-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/radeon/r100.c | 127 ++++++++++++++++++++++++++++++++++++++++- 1 files changed, 124 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 2e0a603..8acb34f 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -65,6 +65,19 @@ MODULE_FIRMWARE(FIRMWARE_R520);
#include "r100_track.h"
+/* This files gather functions specifics to: + * r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280 + * and others in some cases. + */ + +/** + * r100_wait_for_vblank - vblank wait asic callback. + * + * @rdev: radeon_device pointer + * @crtc: crtc to wait for vblank on + * + * Wait for vblank on the requested crtc (r1xx-r4xx). + */ void r100_wait_for_vblank(struct radeon_device *rdev, int crtc) { struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc]; @@ -99,22 +112,49 @@ void r100_wait_for_vblank(struct radeon_device *rdev, int crtc) } }
-/* This files gather functions specifics to: - * r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280 +/** + * r100_pre_page_flip - pre-pageflip callback. + * + * @rdev: radeon_device pointer + * @crtc: crtc to prepare for pageflip on + * + * Pre-pageflip callback (r1xx-r4xx). + * Enables the pageflip irq (vblank irq). */ - void r100_pre_page_flip(struct radeon_device *rdev, int crtc) { /* enable the pflip int */ radeon_irq_kms_pflip_irq_get(rdev, crtc); }
+/** + * r100_post_page_flip - pos-pageflip callback. + * + * @rdev: radeon_device pointer + * @crtc: crtc to cleanup pageflip on + * + * Post-pageflip callback (r1xx-r4xx). + * Disables the pageflip irq (vblank irq). + */ void r100_post_page_flip(struct radeon_device *rdev, int crtc) { /* disable the pflip int */ radeon_irq_kms_pflip_irq_put(rdev, crtc); }
+/** + * r100_page_flip - pageflip callback. + * + * @rdev: radeon_device pointer + * @crtc_id: crtc to cleanup pageflip on + * @crtc_base: new address of the crtc (GPU MC address) + * + * Does the actual pageflip (r1xx-r4xx). + * During vblank we take the crtc lock and wait for the update_pending + * bit to go high, when it does, we release the lock, and allow the + * double buffered update to take place. + * Returns the current update pending status. + */ u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) { struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id]; @@ -141,6 +181,15 @@ u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) return RREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET; }
+/** + * r100_pm_get_dynpm_state - look up dynpm power state callback. + * + * @rdev: radeon_device pointer + * + * Look up the optimal power state based on the + * current state of the GPU (r1xx-r5xx). + * Used for dynpm only. + */ void r100_pm_get_dynpm_state(struct radeon_device *rdev) { int i; @@ -223,6 +272,15 @@ void r100_pm_get_dynpm_state(struct radeon_device *rdev) pcie_lanes); }
+/** + * r100_pm_init_profile - Initialize power profiles callback. + * + * @rdev: radeon_device pointer + * + * Initialize the power states used in profile mode + * (r1xx-r3xx). + * Used for profile mode only. + */ void r100_pm_init_profile(struct radeon_device *rdev) { /* default */ @@ -262,6 +320,14 @@ void r100_pm_init_profile(struct radeon_device *rdev) rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx = 0; }
+/** + * r100_pm_misc - set additional pm hw parameters callback. + * + * @rdev: radeon_device pointer + * + * Set non-clock parameters associated with a power state + * (voltage, pcie lanes, etc.) (r1xx-r4xx). + */ void r100_pm_misc(struct radeon_device *rdev) { int requested_index = rdev->pm.requested_power_state_index; @@ -353,6 +419,13 @@ void r100_pm_misc(struct radeon_device *rdev) } }
+/** + * r100_pm_prepare - pre-power state change callback. + * + * @rdev: radeon_device pointer + * + * Prepare for a power state change (r1xx-r4xx). + */ void r100_pm_prepare(struct radeon_device *rdev) { struct drm_device *ddev = rdev->ddev; @@ -377,6 +450,13 @@ void r100_pm_prepare(struct radeon_device *rdev) } }
+/** + * r100_pm_finish - post-power state change callback. + * + * @rdev: radeon_device pointer + * + * Clean up after a power state change (r1xx-r4xx). + */ void r100_pm_finish(struct radeon_device *rdev) { struct drm_device *ddev = rdev->ddev; @@ -401,6 +481,14 @@ void r100_pm_finish(struct radeon_device *rdev) } }
+/** + * r100_gui_idle - gui idle callback. + * + * @rdev: radeon_device pointer + * + * Check of the GUI (2D/3D engines) are idle (r1xx-r5xx). + * Returns true if idle, false if not. + */ bool r100_gui_idle(struct radeon_device *rdev) { if (RREG32(RADEON_RBBM_STATUS) & RADEON_RBBM_ACTIVE) @@ -410,6 +498,15 @@ bool r100_gui_idle(struct radeon_device *rdev) }
/* hpd for digital panel detect/disconnect */ +/** + * r100_hpd_sense - hpd sense callback. + * + * @rdev: radeon_device pointer + * @hpd: hpd (hotplug detect) pin + * + * Checks if a digital monitor is connected (r1xx-r4xx). + * Returns true if connected, false if not connected. + */ bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd) { bool connected = false; @@ -429,6 +526,14 @@ bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd) return connected; }
+/** + * r100_hpd_set_polarity - hpd set polarity callback. + * + * @rdev: radeon_device pointer + * @hpd: hpd (hotplug detect) pin + * + * Set the polarity of the hpd pin (r1xx-r4xx). + */ void r100_hpd_set_polarity(struct radeon_device *rdev, enum radeon_hpd_id hpd) { @@ -457,6 +562,14 @@ void r100_hpd_set_polarity(struct radeon_device *rdev, } }
+/** + * r100_hpd_init - hpd setup callback. + * + * @rdev: radeon_device pointer + * + * Setup the hpd pins used by the card (r1xx-r4xx). + * Set the polarity, and enable the hpd interrupts. + */ void r100_hpd_init(struct radeon_device *rdev) { struct drm_device *dev = rdev->ddev; @@ -471,6 +584,14 @@ void r100_hpd_init(struct radeon_device *rdev) radeon_irq_kms_enable_hpd(rdev, enable); }
+/** + * r100_hpd_fini - hpd tear down callback. + * + * @rdev: radeon_device pointer + * + * Tear down the hpd pins used by the card (r1xx-r4xx). + * Disable the hpd interrupts. + */ void r100_hpd_fini(struct radeon_device *rdev) { struct drm_device *dev = rdev->ddev;