diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/tegra/sor.c | 93 |
1 files changed, 41 insertions, 52 deletions
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 1414e20a0b71..17e008f6081f 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -1196,6 +1196,7 @@ static void tegra_sor_edp_enable(struct drm_encoder *encoder) struct tegra_sor *sor = to_sor(output); struct tegra_sor_config config; struct drm_dp_link link; + u8 rate, lanes; int err = 0; u32 value; @@ -1208,17 +1209,14 @@ static void tegra_sor_edp_enable(struct drm_encoder *encoder) if (output->panel) drm_panel_prepare(output->panel); - if (sor->aux) { - err = drm_dp_aux_enable(sor->aux); - if (err < 0) - dev_err(sor->dev, "failed to enable DP: %d\n", err); + err = drm_dp_aux_enable(sor->aux); + if (err < 0) + dev_err(sor->dev, "failed to enable DP: %d\n", err); - err = drm_dp_link_probe(sor->aux, &link); - if (err < 0) { - dev_err(sor->dev, "failed to probe eDP link: %d\n", - err); - return; - } + err = drm_dp_link_probe(sor->aux, &link); + if (err < 0) { + dev_err(sor->dev, "failed to probe eDP link: %d\n", err); + return; } err = clk_set_parent(sor->clk, sor->clk_safe); @@ -1430,60 +1428,51 @@ static void tegra_sor_edp_enable(struct drm_encoder *encoder) value |= SOR_DP_PADCTL_PAD_CAL_PD; tegra_sor_writel(sor, value, SOR_DP_PADCTL0); - if (sor->aux) { - u8 rate, lanes; - - err = drm_dp_link_probe(sor->aux, &link); - if (err < 0) - dev_err(sor->dev, "failed to probe eDP link: %d\n", - err); + err = drm_dp_link_probe(sor->aux, &link); + if (err < 0) + dev_err(sor->dev, "failed to probe eDP link: %d\n", err); - err = drm_dp_link_power_up(sor->aux, &link); - if (err < 0) - dev_err(sor->dev, "failed to power up eDP link: %d\n", - err); + err = drm_dp_link_power_up(sor->aux, &link); + if (err < 0) + dev_err(sor->dev, "failed to power up eDP link: %d\n", err); - err = drm_dp_link_configure(sor->aux, &link); - if (err < 0) - dev_err(sor->dev, "failed to configure eDP link: %d\n", - err); + err = drm_dp_link_configure(sor->aux, &link); + if (err < 0) + dev_err(sor->dev, "failed to configure eDP link: %d\n", err); - rate = drm_dp_link_rate_to_bw_code(link.rate); - lanes = link.num_lanes; + rate = drm_dp_link_rate_to_bw_code(link.rate); + lanes = link.num_lanes; - value = tegra_sor_readl(sor, SOR_CLK_CNTRL); - value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK; - value |= SOR_CLK_CNTRL_DP_LINK_SPEED(rate); - tegra_sor_writel(sor, value, SOR_CLK_CNTRL); + value = tegra_sor_readl(sor, SOR_CLK_CNTRL); + value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK; + value |= SOR_CLK_CNTRL_DP_LINK_SPEED(rate); + tegra_sor_writel(sor, value, SOR_CLK_CNTRL); - value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); - value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK; - value |= SOR_DP_LINKCTL_LANE_COUNT(lanes); + value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); + value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK; + value |= SOR_DP_LINKCTL_LANE_COUNT(lanes); - if (link.capabilities & DP_LINK_CAP_ENHANCED_FRAMING) - value |= SOR_DP_LINKCTL_ENHANCED_FRAME; + if (link.capabilities & DP_LINK_CAP_ENHANCED_FRAMING) + value |= SOR_DP_LINKCTL_ENHANCED_FRAME; - tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); + tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); - /* disable training pattern generator */ + /* disable training pattern generator */ - for (i = 0; i < link.num_lanes; i++) { - unsigned long lane = SOR_DP_TPG_CHANNEL_CODING | - SOR_DP_TPG_SCRAMBLER_GALIOS | - SOR_DP_TPG_PATTERN_NONE; - value = (value << 8) | lane; - } + for (i = 0; i < link.num_lanes; i++) { + unsigned long lane = SOR_DP_TPG_CHANNEL_CODING | + SOR_DP_TPG_SCRAMBLER_GALIOS | + SOR_DP_TPG_PATTERN_NONE; + value = (value << 8) | lane; + } - tegra_sor_writel(sor, value, SOR_DP_TPG); + tegra_sor_writel(sor, value, SOR_DP_TPG); - err = tegra_sor_dp_train_fast(sor, &link); - if (err < 0) { - dev_err(sor->dev, "DP fast link training failed: %d\n", - err); - } + err = tegra_sor_dp_train_fast(sor, &link); + if (err < 0) + dev_err(sor->dev, "DP fast link training failed: %d\n", err); - dev_dbg(sor->dev, "fast link training succeeded\n"); - } + dev_dbg(sor->dev, "fast link training succeeded\n"); err = tegra_sor_power_up(sor, 250); if (err < 0) |