drm/tegra: dc: Add Tegra194 support

The display controllers found on Tegra194 are almost identical to those
found on Tegra186.

Signed-off-by: Thierry Reding <treding@nvidia.com>

3 files changed, 53 insertions, 1 deletions

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 7e36ca204cbb..f80e82e16475 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2256,8 +2256,59 @@ static const struct tegra_dc_soc_info tegra186_dc_soc_info = {
         .num_wgrps = ARRAY_SIZE(tegra186_dc_wgrps),
 };
 
+static const struct tegra_windowgroup_soc tegra194_dc_wgrps[] = {
+        {
+                .index = 0,
+                .dc = 0,
+                .windows = (const unsigned int[]) { 0 },
+                .num_windows = 1,
+        }, {
+                .index = 1,
+                .dc = 1,
+                .windows = (const unsigned int[]) { 1 },
+                .num_windows = 1,
+        }, {
+                .index = 2,
+                .dc = 1,
+                .windows = (const unsigned int[]) { 2 },
+                .num_windows = 1,
+        }, {
+                .index = 3,
+                .dc = 2,
+                .windows = (const unsigned int[]) { 3 },
+                .num_windows = 1,
+        }, {
+                .index = 4,
+                .dc = 2,
+                .windows = (const unsigned int[]) { 4 },
+                .num_windows = 1,
+        }, {
+                .index = 5,
+                .dc = 2,
+                .windows = (const unsigned int[]) { 5 },
+                .num_windows = 1,
+        },
+};
+
+static const struct tegra_dc_soc_info tegra194_dc_soc_info = {
+        .supports_background_color = true,
+        .supports_interlacing = true,
+        .supports_cursor = true,
+        .supports_block_linear = true,
+        .has_legacy_blending = false,
+        .pitch_align = 64,
+        .has_powergate = false,
+        .coupled_pm = false,
+        .has_nvdisplay = true,
+        .wgrps = tegra194_dc_wgrps,
+        .num_wgrps = ARRAY_SIZE(tegra194_dc_wgrps),
+};
+
 static const struct of_device_id tegra_dc_of_match[] = {
         {
+                .compatible = "nvidia,tegra194-dc",
+                .data = &tegra194_dc_soc_info,
+        }, {
                 .compatible = "nvidia,tegra186-dc",
                 .data = &tegra186_dc_soc_info,
         }, {
diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h
index e96f582ca692..1256dfb6b2f5 100644
--- a/drivers/gpu/drm/tegra/dc.h
+++ b/drivers/gpu/drm/tegra/dc.h
@@ -300,7 +300,7 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define SOR1_TIMING_CYA (1 << 27)
 #define CURSOR_ENABLE   (1 << 16)
 
-#define SOR_ENABLE(x)   (1 << (25 + (x)))
+#define SOR_ENABLE(x)   (1 << (25 + (((x) > 1) ? ((x) + 1) : (x))))
 
 #define DC_DISP_DISP_MEM_HIGH_PRIORITY          0x403
 #define CURSOR_THRESHOLD(x)   (((x) & 0x03) << 24)
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 4e40ffd2b32e..0ed6fa8ac446 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1256,6 +1256,7 @@ static const struct of_device_id host1x_drm_subdevs[] = {
         { .compatible = "nvidia,tegra186-sor1", },
         { .compatible = "nvidia,tegra186-vic", },
         { .compatible = "nvidia,tegra194-display", },
+        { .compatible = "nvidia,tegra194-dc", },
         { /* sentinel */ }
 };