drm/tegra: dc: Add Tegra186 support

The display architecture has changed in several signifcant ways with the
new Tegra186 SoC. Display controllers are a completely different design,
but have been given a frontend that simulates the register interface for
earlier chips.

Unfortunately the frontend isn't completely backwards compatible, so the
driver needs parameterization to take the changes into account.

One big change is that the total number of display controllers has been
increased to three. At the same time the number of planes available has
remained constant. However, planes can now be freely assigned between
the display controllers, giving applications more flexibility in making
the best use of the available resources.

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

1 files changed, 66 insertions, 32 deletions

diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h
index 22c5091006bc..47f43663adcb 100644
--- a/drivers/gpu/drm/tegra/dc.h
+++ b/drivers/gpu/drm/tegra/dc.h
@@ -43,6 +43,13 @@ struct tegra_dc_stats {
 	unsigned long overflow;
 };
 
+struct tegra_windowgroup_soc {
+	unsigned int index;
+	unsigned int dc;
+	const unsigned int *windows;
+	unsigned int num_windows;
+};
+
 struct tegra_dc_soc_info {
 	bool supports_background_color;
 	bool supports_interlacing;
@@ -51,6 +58,9 @@ struct tegra_dc_soc_info {
 	unsigned int pitch_align;
 	bool has_powergate;
 	bool broken_reset;
+	bool has_nvdisplay;
+	const struct tegra_windowgroup_soc *wgrps;
+	unsigned int num_wgrps;
 };
 
 struct tegra_dc {
@@ -180,15 +190,26 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define DC_CMD_INT_ENABLE			0x039
 #define DC_CMD_INT_TYPE				0x03a
 #define DC_CMD_INT_POLARITY			0x03b
-#define CTXSW_INT     (1 << 0)
-#define FRAME_END_INT (1 << 1)
-#define VBLANK_INT    (1 << 2)
-#define WIN_A_UF_INT  (1 << 8)
-#define WIN_B_UF_INT  (1 << 9)
-#define WIN_C_UF_INT  (1 << 10)
-#define WIN_A_OF_INT  (1 << 14)
-#define WIN_B_OF_INT  (1 << 15)
-#define WIN_C_OF_INT  (1 << 16)
+#define CTXSW_INT                (1 << 0)
+#define FRAME_END_INT            (1 << 1)
+#define VBLANK_INT               (1 << 2)
+#define V_PULSE3_INT             (1 << 4)
+#define V_PULSE2_INT             (1 << 5)
+#define REGION_CRC_INT           (1 << 6)
+#define REG_TMOUT_INT            (1 << 7)
+#define WIN_A_UF_INT             (1 << 8)
+#define WIN_B_UF_INT             (1 << 9)
+#define WIN_C_UF_INT             (1 << 10)
+#define MSF_INT                  (1 << 12)
+#define WIN_A_OF_INT             (1 << 14)
+#define WIN_B_OF_INT             (1 << 15)
+#define WIN_C_OF_INT             (1 << 16)
+#define HEAD_UF_INT              (1 << 23)
+#define SD3_BUCKET_WALK_DONE_INT (1 << 24)
+#define DSC_OBUF_UF_INT          (1 << 26)
+#define DSC_RBUF_UF_INT          (1 << 27)
+#define DSC_BBUF_UF_INT          (1 << 28)
+#define DSC_TO_UF_INT            (1 << 29)
 
 #define DC_CMD_SIGNAL_RAISE1			0x03c
 #define DC_CMD_SIGNAL_RAISE2			0x03d
@@ -253,6 +274,10 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define DC_COM_GPIO_DEBOUNCE_COUNTER		0x328
 #define DC_COM_CRC_CHECKSUM_LATCHED		0x329
 
+#define DC_COM_RG_UNDERFLOW			0x365
+#define  UNDERFLOW_MODE_RED      (1 << 8)
+#define  UNDERFLOW_REPORT_ENABLE (1 << 0)
+
 #define DC_DISP_DISP_SIGNAL_OPTIONS0		0x400
 #define H_PULSE0_ENABLE (1 <<  8)
 #define H_PULSE1_ENABLE (1 << 10)
@@ -375,29 +400,33 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define DISP_ORDER_BLUE_RED        (1 << 9)
 
 #define DC_DISP_DISP_COLOR_CONTROL		0x430
-#define BASE_COLOR_SIZE666     (0 << 0)
-#define BASE_COLOR_SIZE111     (1 << 0)
-#define BASE_COLOR_SIZE222     (2 << 0)
-#define BASE_COLOR_SIZE333     (3 << 0)
-#define BASE_COLOR_SIZE444     (4 << 0)
-#define BASE_COLOR_SIZE555     (5 << 0)
-#define BASE_COLOR_SIZE565     (6 << 0)
-#define BASE_COLOR_SIZE332     (7 << 0)
-#define BASE_COLOR_SIZE888     (8 << 0)
+#define BASE_COLOR_SIZE666     ( 0 << 0)
+#define BASE_COLOR_SIZE111     ( 1 << 0)
+#define BASE_COLOR_SIZE222     ( 2 << 0)
+#define BASE_COLOR_SIZE333     ( 3 << 0)
+#define BASE_COLOR_SIZE444     ( 4 << 0)
+#define BASE_COLOR_SIZE555     ( 5 << 0)
+#define BASE_COLOR_SIZE565     ( 6 << 0)
+#define BASE_COLOR_SIZE332     ( 7 << 0)
+#define BASE_COLOR_SIZE888     ( 8 << 0)
+#define BASE_COLOR_SIZE101010  (10 << 0)
+#define BASE_COLOR_SIZE121212  (12 << 0)
 #define DITHER_CONTROL_MASK    (3 << 8)
 #define DITHER_CONTROL_DISABLE (0 << 8)
 #define DITHER_CONTROL_ORDERED (2 << 8)
 #define DITHER_CONTROL_ERRDIFF (3 << 8)
 #define BASE_COLOR_SIZE_MASK   (0xf << 0)
-#define BASE_COLOR_SIZE_666    (0 << 0)
-#define BASE_COLOR_SIZE_111    (1 << 0)
-#define BASE_COLOR_SIZE_222    (2 << 0)
-#define BASE_COLOR_SIZE_333    (3 << 0)
-#define BASE_COLOR_SIZE_444    (4 << 0)
-#define BASE_COLOR_SIZE_555    (5 << 0)
-#define BASE_COLOR_SIZE_565    (6 << 0)
-#define BASE_COLOR_SIZE_332    (7 << 0)
-#define BASE_COLOR_SIZE_888    (8 << 0)
+#define BASE_COLOR_SIZE_666    (  0 << 0)
+#define BASE_COLOR_SIZE_111    (  1 << 0)
+#define BASE_COLOR_SIZE_222    (  2 << 0)
+#define BASE_COLOR_SIZE_333    (  3 << 0)
+#define BASE_COLOR_SIZE_444    (  4 << 0)
+#define BASE_COLOR_SIZE_555    (  5 << 0)
+#define BASE_COLOR_SIZE_565    (  6 << 0)
+#define BASE_COLOR_SIZE_332    (  7 << 0)
+#define BASE_COLOR_SIZE_888    (  8 << 0)
+#define BASE_COLOR_SIZE_101010 ( 10 << 0)
+#define BASE_COLOR_SIZE_121212 ( 12 << 0)
 
 #define DC_DISP_SHIFT_CLOCK_OPTIONS		0x431
 #define  SC1_H_QUALIFIER_NONE	(1 << 16)
@@ -571,16 +600,16 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define WIN_COLOR_DEPTH_YUV422RA       25
 
 #define DC_WIN_POSITION				0x704
-#define H_POSITION(x) (((x) & 0x1fff) <<  0)
-#define V_POSITION(x) (((x) & 0x1fff) << 16)
+#define H_POSITION(x) (((x) & 0x1fff) <<  0) /* XXX 0x7fff on Tegra186 */
+#define V_POSITION(x) (((x) & 0x1fff) << 16) /* XXX 0x7fff on Tegra186 */
 
 #define DC_WIN_SIZE				0x705
-#define H_SIZE(x) (((x) & 0x1fff) <<  0)
-#define V_SIZE(x) (((x) & 0x1fff) << 16)
+#define H_SIZE(x) (((x) & 0x1fff) <<  0) /* XXX 0x7fff on Tegra186 */
+#define V_SIZE(x) (((x) & 0x1fff) << 16) /* XXX 0x7fff on Tegra186 */
 
 #define DC_WIN_PRESCALED_SIZE			0x706
 #define H_PRESCALED_SIZE(x) (((x) & 0x7fff) <<  0)
-#define V_PRESCALED_SIZE(x) (((x) & 0x1fff) << 16)
+#define V_PRESCALED_SIZE(x) (((x) & 0x1fff) << 16) /* XXX 0x7fff on Tegra186 */
 
 #define DC_WIN_H_INITIAL_DDA			0x707
 #define DC_WIN_V_INITIAL_DDA			0x708
@@ -596,6 +625,7 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define DC_WIN_BUFFER_ADDR_MODE_TILE		(1 <<  0)
 #define DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV	(0 << 16)
 #define DC_WIN_BUFFER_ADDR_MODE_TILE_UV		(1 << 16)
+
 #define DC_WIN_DV_CONTROL			0x70e
 
 #define DC_WIN_BLEND_NOKEY			0x70f
@@ -635,6 +665,10 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define DC_WINBUF_CD_UFLOW_STATUS		0xfca
 
 /* Tegra186 and later */
+#define DC_DISP_CORE_SOR_SET_CONTROL(x)		(0x403 + (x))
+#define PROTOCOL_MASK (0xf << 8)
+#define PROTOCOL_SINGLE_TMDS_A (0x1 << 8)
+
 #define DC_WIN_CORE_WINDOWGROUP_SET_CONTROL	0x702
 #define OWNER_MASK (0xf << 0)
 #define OWNER(x) (((x) & 0xf) << 0)