From a6d43f53701f1287c963009a10c649d859121feb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 11 Nov 2009 21:46:39 +0100 Subject: [PATCH] PM hacks --- drivers/gpu/drm/radeon/radeon.h | 1 + drivers/gpu/drm/radeon/radeon_pm.c | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 9f0bd98..51f0b6d 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -551,6 +551,7 @@ struct radeon_wb { * (type of memory, bus size, efficiency, ...) */ struct radeon_pm { + struct timer_list idle_timer; fixed20_12 max_bandwidth; fixed20_12 igp_sideport_mclk; fixed20_12 igp_system_mclk; diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 46146c6..2829273 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -23,6 +23,7 @@ #include "radeon.h" int radeon_debugfs_pm_init(struct radeon_device *rdev); +void radeon_pm_reclock(unsigned long arg); int radeon_pm_init(struct radeon_device *rdev) { @@ -30,9 +31,21 @@ int radeon_pm_init(struct radeon_device *rdev) DRM_ERROR("Failed to register debugfs file for CP !\n"); } + setup_timer(&rdev->pm.idle_timer, radeon_pm_reclock, (unsigned long)rdev); + return 0; } +void radeon_pm_reclock(unsigned long arg) +{ + struct radeon_device *rdev = (struct radeon_device *)arg; + radeon_ring_free_size(rdev); + + mutex_lock(&rdev->cs_mutex); + radeon_set_engine_clock(rdev, 30000); /* 300'000 kHz */ + mutex_unlock(&rdev->cs_mutex); +} + /* * Debugfs info */ @@ -47,6 +60,12 @@ static int radeon_debugfs_pm_info(struct seq_file *m, void *data) seq_printf(m, "engine clock: %u0 Hz\n", radeon_get_engine_clock(rdev)); seq_printf(m, "memory clock: %u0 Hz\n", radeon_get_memory_clock(rdev)); + /* This one works */ + /*radeon_pm_reclock((unsigned long)rdev);*/ + + /* This causes lock up */ + /*mod_timer(&rdev->pm.idle_timer, jiffies + msecs_to_jiffies(50));*/ + return 0; } -- 1.6.4.2