summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm
diff options
context:
space:
mode:
authorYang Zhao <yang@yangman.ca>2009-09-15 12:21:01 +1000
committerDave Airlie <airlied@linux.ie>2009-09-16 10:21:35 +1000
commitf657c2a7310ad56e2b67f35f4c5c6106a7146b9c (patch)
treeae1d2b409de5a472842de2decf5965658aac0c82 /drivers/gpu/drm
parentecb114a128d150422d22eda238cb812f6b20bf39 (diff)
drm/radeon: Save and restore bios scratch regs during S/R
[airlied:- adapted slightly in naming] Signed-off-by: Yang Zhao <yang@yangman.ca> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/radeon/radeon.h2
-rw-r--r--drivers/gpu/drm/radeon/radeon_atombios.c28
-rw-r--r--drivers/gpu/drm/radeon/radeon_device.c3
-rw-r--r--drivers/gpu/drm/radeon/radeon_mode.h2
4 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index ff9e4171559a..5bfc05612ac2 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -75,6 +75,7 @@ extern int radeon_tv;
#define RADEON_IB_POOL_SIZE 16
#define RADEON_DEBUGFS_MAX_NUM_FILES 32
#define RADEONFB_CONN_LIMIT 4
+#define RADEON_BIOS_NUM_SCRATCH 8
enum radeon_family {
CHIP_R100,
@@ -783,6 +784,7 @@ struct radeon_device {
struct radeon_asic *asic;
struct radeon_gem gem;
struct radeon_pm pm;
+ uint32_t bios_scratch[RADEON_BIOS_NUM_SCRATCH];
struct mutex cs_mutex;
struct radeon_wb wb;
struct radeon_dummy_page dummy_page;
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index aa756dec8959..cb5efcaf2bab 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1045,6 +1045,34 @@ void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev)
}
+void radeon_save_bios_scratch_regs(struct radeon_device *rdev)
+{
+ uint32_t scratch_reg;
+ int i;
+
+ if (rdev->family >= CHIP_R600)
+ scratch_reg = R600_BIOS_0_SCRATCH;
+ else
+ scratch_reg = RADEON_BIOS_0_SCRATCH;
+
+ for (i = 0; i < RADEON_BIOS_NUM_SCRATCH; i++)
+ rdev->bios_scratch[i] = RREG32(scratch_reg + (i * 4));
+}
+
+void radeon_restore_bios_scratch_regs(struct radeon_device *rdev)
+{
+ uint32_t scratch_reg;
+ int i;
+
+ if (rdev->family >= CHIP_R600)
+ scratch_reg = R600_BIOS_0_SCRATCH;
+ else
+ scratch_reg = RADEON_BIOS_0_SCRATCH;
+
+ for (i = 0; i < RADEON_BIOS_NUM_SCRATCH; i++)
+ WREG32(scratch_reg + (i * 4), rdev->bios_scratch[i]);
+}
+
void radeon_atom_output_lock(struct drm_encoder *encoder, bool lock)
{
struct drm_device *dev = encoder->dev;
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index cc8e005c1b30..db5ae73d6289 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -755,6 +755,8 @@ int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
/* wait for gpu to finish processing current batch */
radeon_fence_wait_last(rdev);
+ radeon_save_bios_scratch_regs(rdev);
+
if (!rdev->new_init_path) {
radeon_cp_disable(rdev);
radeon_gart_disable(rdev);
@@ -828,6 +830,7 @@ int radeon_resume_kms(struct drm_device *dev)
radeon_resume(rdev);
}
out:
+ radeon_restore_bios_scratch_regs(rdev);
fb_set_suspend(rdev->fbdev_info, 0);
release_console_sem();
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 523d6cbd4f08..dde13817dee0 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -383,6 +383,8 @@ extern void radeon_combios_output_lock(struct drm_encoder *encoder, bool lock);
extern void radeon_combios_initialize_bios_scratch_regs(struct drm_device *dev);
extern void radeon_atom_output_lock(struct drm_encoder *encoder, bool lock);
extern void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev);
+extern void radeon_save_bios_scratch_regs(struct radeon_device *rdev);
+extern void radeon_restore_bios_scratch_regs(struct radeon_device *rdev);
extern void
radeon_atombios_encoder_crtc_scratch_regs(struct drm_encoder *encoder, int crtc);
extern void