forked from Minki/linux
c82baa2818
This implements DPM for tonga. DPM handles dynamic clock and voltage scaling. v2: merge all the patches related with tonga dpm v3: merge dpm force level fix, cgs display fix, spelling fix Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Signed-off-by: yanyang1 <young.yang@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
|
|
* Copyright 2015 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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include "atom-types.h"
|
|
#include "atombios.h"
|
|
#include "pppcielanes.h"
|
|
|
|
/** \file
|
|
* Functions related to PCIe lane changes.
|
|
*/
|
|
|
|
/* For converting from number of lanes to lane bits. */
|
|
static const unsigned char pp_r600_encode_lanes[] = {
|
|
0, /* 0 Not Supported */
|
|
1, /* 1 Lane */
|
|
2, /* 2 Lanes */
|
|
0, /* 3 Not Supported */
|
|
3, /* 4 Lanes */
|
|
0, /* 5 Not Supported */
|
|
0, /* 6 Not Supported */
|
|
0, /* 7 Not Supported */
|
|
4, /* 8 Lanes */
|
|
0, /* 9 Not Supported */
|
|
0, /* 10 Not Supported */
|
|
0, /* 11 Not Supported */
|
|
5, /* 12 Lanes (Not actually supported) */
|
|
0, /* 13 Not Supported */
|
|
0, /* 14 Not Supported */
|
|
0, /* 15 Not Supported */
|
|
6 /* 16 Lanes */
|
|
};
|
|
|
|
static const unsigned char pp_r600_decoded_lanes[8] = { 16, 1, 2, 4, 8, 12, 16, };
|
|
|
|
uint8_t encode_pcie_lane_width(uint32_t num_lanes)
|
|
{
|
|
return pp_r600_encode_lanes[num_lanes];
|
|
}
|
|
|
|
uint8_t decode_pcie_lane_width(uint32_t num_lanes)
|
|
{
|
|
return pp_r600_decoded_lanes[num_lanes];
|
|
}
|