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-rw-r--r--drivers/gpu/drm/tegra/sor.c93
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)