/* * Copyright 2012 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. *
*/
staticint trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
{ int i;
u32 v = 0;
WREG32(SMC_MESSAGE_0, id); for (i = 0; i < rdev->usec_timeout; i++) { if (RREG32(SMC_RESP_0) != 0) break;
udelay(1);
}
v = RREG32(SMC_RESP_0);
if (v != 1) { if (v == 0xFF) {
DRM_ERROR("SMC failed to handle the message!\n"); return -EINVAL;
} elseif (v == 0xFE) {
DRM_ERROR("Unknown SMC message!\n"); return -EINVAL;
}
}
return 0;
}
int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
{ if (enable) return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM); else return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
}
int trinity_dpm_config(struct radeon_device *rdev, bool enable)
{ if (enable)
WREG32_SMC(SMU_SCRATCH0, 1); else
WREG32_SMC(SMU_SCRATCH0, 0);
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