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    Subject[PATCH 3.16 017/357] drm/radeon/dpm: handle voltage info fetching on hawaii
    Date
    3.16-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Alex Deucher <alexander.deucher@amd.com>

    commit 6b57f20cb5b708415fbab63847f8f8429b051af8 upstream.

    Some hawaii cards use a different method to fetch the
    voltage info from the vbios.

    bug:
    https://bugs.freedesktop.org/show_bug.cgi?id=74250

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/radeon/ci_dpm.c | 13 ++++++++++++-
    1 file changed, 12 insertions(+), 1 deletion(-)

    --- a/drivers/gpu/drm/radeon/ci_dpm.c
    +++ b/drivers/gpu/drm/radeon/ci_dpm.c
    @@ -940,7 +940,18 @@ static void ci_get_leakage_voltages(stru
    pi->vddc_leakage.count = 0;
    pi->vddci_leakage.count = 0;

    - if (radeon_atom_get_leakage_id_from_vbios(rdev, &leakage_id) == 0) {
    + if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_EVV) {
    + for (i = 0; i < CISLANDS_MAX_LEAKAGE_COUNT; i++) {
    + virtual_voltage_id = ATOM_VIRTUAL_VOLTAGE_ID0 + i;
    + if (radeon_atom_get_voltage_evv(rdev, virtual_voltage_id, &vddc) != 0)
    + continue;
    + if (vddc != 0 && vddc != virtual_voltage_id) {
    + pi->vddc_leakage.actual_voltage[pi->vddc_leakage.count] = vddc;
    + pi->vddc_leakage.leakage_id[pi->vddc_leakage.count] = virtual_voltage_id;
    + pi->vddc_leakage.count++;
    + }
    + }
    + } else if (radeon_atom_get_leakage_id_from_vbios(rdev, &leakage_id) == 0) {
    for (i = 0; i < CISLANDS_MAX_LEAKAGE_COUNT; i++) {
    virtual_voltage_id = ATOM_VIRTUAL_VOLTAGE_ID0 + i;
    if (radeon_atom_get_leakage_vddc_based_on_leakage_params(rdev, &vddc, &vddci,



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