From 03afe6f6480f2544d6cd18866556f1f76bb05f14 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 23 Aug 2013 11:56:26 -0400 Subject: drm/radeon/dpm: enable dynamic vce state switching v2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit enable vce states when vce is active. When vce is active, it adjusts the currently selected state (performance, battery, uvd, etc.) v2: add code comments Signed-off-by: Alex Deucher Signed-off-by: Christian König --- drivers/gpu/drm/radeon/radeon_vce.c | 62 +++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) (limited to 'drivers/gpu/drm/radeon/radeon_vce.c') diff --git a/drivers/gpu/drm/radeon/radeon_vce.c b/drivers/gpu/drm/radeon/radeon_vce.c index f46563b60921..d130432e313a 100644 --- a/drivers/gpu/drm/radeon/radeon_vce.c +++ b/drivers/gpu/drm/radeon/radeon_vce.c @@ -34,11 +34,16 @@ #include "radeon_asic.h" #include "sid.h" +/* 1 second timeout */ +#define VCE_IDLE_TIMEOUT_MS 1000 + /* Firmware Names */ #define FIRMWARE_BONAIRE "radeon/BONAIRE_vce.bin" MODULE_FIRMWARE(FIRMWARE_BONAIRE); +static void radeon_vce_idle_work_handler(struct work_struct *work); + /** * radeon_vce_init - allocate memory, load vce firmware * @@ -55,6 +60,8 @@ int radeon_vce_init(struct radeon_device *rdev) uint8_t start, mid, end; int i, r; + INIT_DELAYED_WORK(&rdev->vce.idle_work, radeon_vce_idle_work_handler); + switch (rdev->family) { case CHIP_BONAIRE: case CHIP_KAVERI: @@ -219,6 +226,59 @@ int radeon_vce_resume(struct radeon_device *rdev) return 0; } +/** + * radeon_vce_idle_work_handler - power off VCE + * + * @work: pointer to work structure + * + * power of VCE when it's not used any more + */ +static void radeon_vce_idle_work_handler(struct work_struct *work) +{ + struct radeon_device *rdev = + container_of(work, struct radeon_device, vce.idle_work.work); + + if ((radeon_fence_count_emitted(rdev, TN_RING_TYPE_VCE1_INDEX) == 0) && + (radeon_fence_count_emitted(rdev, TN_RING_TYPE_VCE2_INDEX) == 0)) { + if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) { + radeon_dpm_enable_vce(rdev, false); + } else { + radeon_set_vce_clocks(rdev, 0, 0); + } + } else { + schedule_delayed_work(&rdev->vce.idle_work, + msecs_to_jiffies(VCE_IDLE_TIMEOUT_MS)); + } +} + +/** + * radeon_vce_note_usage - power up VCE + * + * @rdev: radeon_device pointer + * + * Make sure VCE is powerd up when we want to use it + */ +void radeon_vce_note_usage(struct radeon_device *rdev) +{ + bool streams_changed = false; + bool set_clocks = !cancel_delayed_work_sync(&rdev->vce.idle_work); + set_clocks &= schedule_delayed_work(&rdev->vce.idle_work, + msecs_to_jiffies(VCE_IDLE_TIMEOUT_MS)); + + if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) { + /* XXX figure out if the streams changed */ + streams_changed = false; + } + + if (set_clocks || streams_changed) { + if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) { + radeon_dpm_enable_vce(rdev, true); + } else { + radeon_set_vce_clocks(rdev, 53300, 40000); + } + } +} + /** * radeon_vce_free_handles - free still open VCE handles * @@ -235,6 +295,8 @@ void radeon_vce_free_handles(struct radeon_device *rdev, struct drm_file *filp) if (!handle || rdev->vce.filp[i] != filp) continue; + radeon_vce_note_usage(rdev); + r = radeon_vce_get_destroy_msg(rdev, TN_RING_TYPE_VCE1_INDEX, handle, NULL); if (r) -- cgit v1.2.3