lkml.org 
[lkml]   [2014]   [Jun]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 3.13 078/160] drm/radeon: fix ATPX detection on non-VGA GPUs
    Date
    3.13.11.3 -stable review patch.  If anyone has any objections, please let me know.

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

    From: Alex Deucher <alexdeucher@gmail.com>

    commit e9a4099a59cc598a44006059dd775c25e422b772 upstream.

    Some newer PX laptops have the pci device class
    set to DISPLAY_OTHER rather than DISPLAY_VGA. This
    properly detects ATPX on those laptops.

    Based on a patch from: Pali Rohár <pali.rohar@gmail.com>

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Cc: airlied@gmail.com
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    drivers/gpu/drm/radeon/radeon_atpx_handler.c | 7 +++++++
    1 file changed, 7 insertions(+)

    diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
    index dedea72..a9fb0d0 100644
    --- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
    +++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
    @@ -528,6 +528,13 @@ static bool radeon_atpx_detect(void)
    has_atpx |= (radeon_atpx_pci_probe_handle(pdev) == true);
    }

    + /* some newer PX laptops mark the dGPU as a non-VGA display device */
    + while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
    + vga_count++;
    +
    + has_atpx |= (radeon_atpx_pci_probe_handle(pdev) == true);
    + }
    +
    if (has_atpx && vga_count == 2) {
    acpi_get_name(radeon_atpx_priv.atpx.handle, ACPI_FULL_PATHNAME, &buffer);
    printk(KERN_INFO "VGA switcheroo: detected switching method %s handle\n",
    --
    1.9.1
    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2014-06-10 23:41    [W:7.103 / U:0.184 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site