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authorAlex Deucher <alexdeucher@gmail.com>2011-06-23 18:19:32 +0200
committerDave Airlie <airlied@redhat.com>2011-06-24 03:11:53 +0200
commitee4017f4ac8163737793cc64df535cd246792887 (patch)
treea400a7e836bbb3ad9987975a0367004e049b108f
parentdrm/radeon/kms: fix num_banks tiling config for fusion (diff)
downloadlinux-ee4017f4ac8163737793cc64df535cd246792887.tar.xz
linux-ee4017f4ac8163737793cc64df535cd246792887.zip
drm/radeon/kms: handle special cases for vddc
A voltage value of 0xff01 requires that the driver look up the max voltage for the board based using the atom SetVoltage command table. Setting the proper voltage should fix stability on some newer asics. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r--drivers/gpu/drm/radeon/radeon.h1
-rw-r--r--drivers/gpu/drm/radeon/radeon_atombios.c36
2 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 27f45579e64b..ef0e0e016914 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -179,6 +179,7 @@ void radeon_pm_resume(struct radeon_device *rdev);
void radeon_combios_get_power_modes(struct radeon_device *rdev);
void radeon_atombios_get_power_modes(struct radeon_device *rdev);
void radeon_atom_set_voltage(struct radeon_device *rdev, u16 voltage_level, u8 voltage_type);
+int radeon_atom_get_max_vddc(struct radeon_device *rdev, u16 *voltage);
void rs690_pm_info(struct radeon_device *rdev);
extern int rv6xx_get_temp(struct radeon_device *rdev);
extern int rv770_get_temp(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 1e725d9f767f..bf2b61584cdb 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -2320,6 +2320,14 @@ static bool radeon_atombios_parse_pplib_clock_info(struct radeon_device *rdev,
le16_to_cpu(clock_info->r600.usVDDC);
}
+ /* patch up vddc if necessary */
+ if (rdev->pm.power_state[state_index].clock_info[mode_index].voltage.voltage == 0xff01) {
+ u16 vddc;
+
+ if (radeon_atom_get_max_vddc(rdev, &vddc) == 0)
+ rdev->pm.power_state[state_index].clock_info[mode_index].voltage.voltage = vddc;
+ }
+
if (rdev->flags & RADEON_IS_IGP) {
/* skip invalid modes */
if (rdev->pm.power_state[state_index].clock_info[mode_index].sclk == 0)
@@ -2630,7 +2638,35 @@ void radeon_atom_set_voltage(struct radeon_device *rdev, u16 voltage_level, u8 v
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
}
+int radeon_atom_get_max_vddc(struct radeon_device *rdev,
+ u16 *voltage)
+{
+ union set_voltage args;
+ int index = GetIndexIntoMasterTable(COMMAND, SetVoltage);
+ u8 frev, crev;
+
+ if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev))
+ return -EINVAL;
+
+ switch (crev) {
+ case 1:
+ return -EINVAL;
+ case 2:
+ args.v2.ucVoltageType = SET_VOLTAGE_GET_MAX_VOLTAGE;
+ args.v2.ucVoltageMode = 0;
+ args.v2.usVoltageLevel = 0;
+
+ atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+
+ *voltage = le16_to_cpu(args.v2.usVoltageLevel);
+ break;
+ default:
+ DRM_ERROR("Unknown table version %d, %d\n", frev, crev);
+ return -EINVAL;
+ }
+ return 0;
+}
void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev)
{