diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi_manager.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi_manager.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 3a1417397283..1bbac72dad35 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -450,6 +450,26 @@ static enum drm_mode_status dsi_mgr_bridge_mode_valid(struct drm_bridge *bridge, int id = dsi_mgr_bridge_get_id(bridge); struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); struct mipi_dsi_host *host = msm_dsi->host; + struct platform_device *pdev = msm_dsi->pdev; + struct dev_pm_opp *opp; + unsigned long byte_clk_rate; + + byte_clk_rate = dsi_byte_clk_get_rate(host, IS_BONDED_DSI(), mode); + + opp = dev_pm_opp_find_freq_ceil(&pdev->dev, &byte_clk_rate); + if (!IS_ERR(opp)) { + dev_pm_opp_put(opp); + } else if (PTR_ERR(opp) == -ERANGE) { + /* + * An empty table is created by devm_pm_opp_set_clkname() even + * if there is none. Thus find_freq_ceil will still return + * -ERANGE in such case. + */ + if (dev_pm_opp_get_opp_count(&pdev->dev) != 0) + return MODE_CLOCK_RANGE; + } else { + return MODE_ERROR; + } return msm_dsi_host_check_dsc(host, mode); } |