For now the amount requested is based solely on the current mode's refresh rate.
Signed-off-by: Tomeu Vizoso <[email protected]> --- drivers/gpu/drm/tegra/dc.c | 11 +++++++++++ drivers/gpu/drm/tegra/drm.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index ef40381..4bcf09b 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -683,6 +683,8 @@ static void tegra_crtc_disable(struct drm_crtc *crtc) } drm_vblank_off(drm, dc->pipe); + + pm_qos_update_request(&dc->qos_request, PM_QOS_DEFAULT_VALUE); } static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc, @@ -769,6 +771,7 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc, struct tegra_dc *dc = to_tegra_dc(crtc); struct tegra_dc_window window; u32 value; + unsigned long bandwidth; int err; drm_vblank_pre_modeset(crtc->dev, dc->pipe); @@ -809,6 +812,9 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc, if (err < 0) dev_err(dc->dev, "failed to enable root plane\n"); + bandwidth = mode->clock * window.bits_per_pixel / 8; + pm_qos_update_request(&dc->qos_request, bandwidth); + return 0; } @@ -1407,6 +1413,9 @@ static int tegra_dc_probe(struct platform_device *pdev) return err; } + pm_qos_add_request(&dc->qos_request, PM_QOS_MEMORY_BANDWIDTH, + PM_QOS_DEFAULT_VALUE); + platform_set_drvdata(pdev, dc); return 0; @@ -1417,6 +1426,8 @@ static int tegra_dc_remove(struct platform_device *pdev) struct tegra_dc *dc = platform_get_drvdata(pdev); int err; + pm_qos_remove_request(&dc->qos_request); + err = host1x_client_unregister(&dc->client); if (err < 0) { dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index 6b8fe9d..6029693 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -116,6 +116,8 @@ struct tegra_dc { struct drm_pending_vblank_event *event; const struct tegra_dc_soc_info *soc; + + struct pm_qos_request qos_request; }; static inline struct tegra_dc * -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
