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    Subject[PATCH 3.12 83/83] drm/radeon/audio: correct ACR table
    Date
    3.12-stable review patch.  If anyone has any objections, please let me know.

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

    From: Pierre Ossman <pierre@ossman.eu>

    commit 3e71985f2439d8c4090dc2820e497e6f3d72dcff upstream.

    The values were taken from the HDMI spec, but they assumed
    exact x/1.001 clocks. Since we round the clocks, we also need
    to calculate different N and CTS values.

    Note that the N for 25.2/1.001 MHz at 44.1 kHz audio is out of
    spec. Hopefully this mode is rarely used and/or HDMI sinks
    tolerate overly large values of N.

    bug:
    https://bugs.freedesktop.org/show_bug.cgi?id=69675

    Signed-off-by: Pierre Ossman <pierre@ossman.eu>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Cc: Josh Boyer <jwboyer@fedoraproject.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/radeon/r600_hdmi.c | 6 +++---
    1 file changed, 3 insertions(+), 3 deletions(-)

    --- a/drivers/gpu/drm/radeon/r600_hdmi.c
    +++ b/drivers/gpu/drm/radeon/r600_hdmi.c
    @@ -58,15 +58,15 @@ enum r600_hdmi_iec_status_bits {
    static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = {
    /* 32kHz 44.1kHz 48kHz */
    /* Clock N CTS N CTS N CTS */
    - { 25175, 4576, 28125, 7007, 31250, 6864, 28125 }, /* 25,20/1.001 MHz */
    + { 25175, 4096, 25175, 28224, 125875, 6144, 25175 }, /* 25,20/1.001 MHz */
    { 25200, 4096, 25200, 6272, 28000, 6144, 25200 }, /* 25.20 MHz */
    { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */
    { 27027, 4096, 27027, 6272, 30030, 6144, 27027 }, /* 27.00*1.001 MHz */
    { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */
    { 54054, 4096, 54054, 6272, 60060, 6144, 54054 }, /* 54.00*1.001 MHz */
    - { 74176, 11648, 210937, 17836, 234375, 11648, 140625 }, /* 74.25/1.001 MHz */
    + { 74176, 4096, 74176, 5733, 75335, 6144, 74176 }, /* 74.25/1.001 MHz */
    { 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */
    - { 148352, 11648, 421875, 8918, 234375, 5824, 140625 }, /* 148.50/1.001 MHz */
    + { 148352, 4096, 148352, 5733, 150670, 6144, 148352 }, /* 148.50/1.001 MHz */
    { 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */
    };




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