We need to define a common list of format modifiers supported by each of the 
Mali
display processors. The difference between DP500 from DP550/650 is that DP500
does not support block split mode (ie AFBC_FORMAT_MOD_SPLIT) and DP550 supports
YUV420 with split mode. We noted these special cases by defining 
MALIDP_DEVICE_AFBC_SUPPORT_SPLIT
and AFBC_SUPPORT_SPLIT_WITH_YUV_420_10 for malidp_hw_regmap.features

Also we have defined a set of meaningful macros to shorten the modifier names

Signed-off-by: Ayan Kumar halder <ayan.hal...@arm.com>

Change-Id: I09fba2032a7474e6ce45af230e0ed18fc1f4c1df
---
 drivers/gpu/drm/arm/malidp_drv.c |  8 ++++----
 drivers/gpu/drm/arm/malidp_hw.c  | 30 ++++++++++++++++++++++++++++--
 drivers/gpu/drm/arm/malidp_hw.h  | 20 +++++++++++++++-----
 3 files changed, 47 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index 505f316..b8db92f 100644
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -293,8 +293,8 @@ malidp_verify_afbc_framebuffer_caps(struct drm_device *dev,
                return false;
        }
 
-       switch (mode_cmd->modifier[0] & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
-       case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
+       switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
+       case AFBC_SIZE_16X16:
                if ((mode_cmd->width % 16) || (mode_cmd->height % 16)) {
                        DRM_DEBUG_KMS("AFBC buffers must be aligned to 16 
pixels\n");
                        return false;
@@ -319,8 +319,8 @@ malidp_verify_afbc_framebuffer_size(struct drm_device *dev,
        u32 afbc_superblock_size = 0, afbc_superblock_height = 0;
        u32 afbc_superblock_width = 0, afbc_size = 0;
 
-       switch (mode_cmd->modifier[0] & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
-       case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
+       switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
+       case AFBC_SIZE_16X16:
                afbc_superblock_height = 16;
                afbc_superblock_width = 16;
                break;
diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c
index 87b7b12..55d379b 100644
--- a/drivers/gpu/drm/arm/malidp_hw.c
+++ b/drivers/gpu/drm/arm/malidp_hw.c
@@ -137,6 +137,32 @@ static const struct malidp_layer malidp650_layers[] = {
                ROTATE_NONE, 0 },
 };
 
+const u64 malidp_format_modifiers[] = {
+       /* All RGB formats (except XRGB, RGBX, XBGR, BGRX) */
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR | AFBC_SPARSE),
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR),
+
+       /* All RGB formats > 16bpp (except XRGB, RGBX, XBGR, BGRX) */
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR | AFBC_SPARSE | 
AFBC_SPLIT),
+
+       /* All 8 or 10 bit YUV 444 formats. */
+       /* In DP550, 10 bit YUV 420 format also supported */
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_SPARSE | AFBC_SPLIT),
+
+       /* YUV 420, 422 P1 8 bit and YUV 444 8 bit/10 bit formats */
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_SPARSE),
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16),
+
+       /* YUV 420, 422 P1 8, 10 bit formats */
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_CBR | AFBC_SPARSE),
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_CBR),
+
+       /* All formats */
+       DRM_FORMAT_MOD_LINEAR,
+
+       DRM_FORMAT_MOD_INVALID
+};
+
 #define SE_N_SCALING_COEFFS    96
 static const u16 dp500_se_scaling_coeffs[][SE_N_SCALING_COEFFS] = {
        [MALIDP_UPSCALING_COEFFS - 1] = {
@@ -841,7 +867,7 @@ const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
                        .se_base = MALIDP550_SE_BASE,
                        .dc_base = MALIDP550_DC_BASE,
                        .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
-                       .features = MALIDP_REGMAP_HAS_CLEARIRQ,
+                       .features = MALIDP_REGMAP_HAS_CLEARIRQ | 
MALIDP_DEVICE_AFBC_SUPPORT_SPLIT | AFBC_SUPPORT_SPLIT_WITH_YUV_420_10,
                        .n_layers = ARRAY_SIZE(malidp550_layers),
                        .layers = malidp550_layers,
                        .de_irq_map = {
@@ -887,7 +913,7 @@ const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
                        .se_base = MALIDP550_SE_BASE,
                        .dc_base = MALIDP550_DC_BASE,
                        .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
-                       .features = MALIDP_REGMAP_HAS_CLEARIRQ,
+                       .features = MALIDP_REGMAP_HAS_CLEARIRQ | 
MALIDP_DEVICE_AFBC_SUPPORT_SPLIT,
                        .n_layers = ARRAY_SIZE(malidp650_layers),
                        .layers = malidp650_layers,
                        .de_irq_map = {
diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h
index 651558f..27b907f 100644
--- a/drivers/gpu/drm/arm/malidp_hw.h
+++ b/drivers/gpu/drm/arm/malidp_hw.h
@@ -95,7 +95,9 @@ struct malidp_se_config {
 };
 
 /* regmap features */
-#define MALIDP_REGMAP_HAS_CLEARIRQ     (1 << 0)
+#define MALIDP_REGMAP_HAS_CLEARIRQ                             BIT(0)
+#define MALIDP_DEVICE_AFBC_SUPPORT_SPLIT                       BIT(1)
+#define AFBC_SUPPORT_SPLIT_WITH_YUV_420_10                     BIT(2)
 
 struct malidp_hw_regmap {
        /* address offset of the DE register bank */
@@ -390,9 +392,17 @@ static inline void malidp_se_set_enh_coeffs(struct 
malidp_hw_device *hwdev)
 
 #define MALIDP_GAMMA_LUT_SIZE          4096
 
-#define AFBC_MOD_VALID_BITS (AFBC_FORMAT_MOD_BLOCK_SIZE_MASK | \
-                       AFBC_FORMAT_MOD_YTR | AFBC_FORMAT_MOD_SPLIT | \
-                       AFBC_FORMAT_MOD_SPARSE | AFBC_FORMAT_MOD_CBR | \
-                       AFBC_FORMAT_MOD_TILED | AFBC_FORMAT_MOD_SC)
+#define AFBC_SIZE_MASK         AFBC_FORMAT_MOD_BLOCK_SIZE_MASK
+#define AFBC_SIZE_16X16                AFBC_FORMAT_MOD_BLOCK_SIZE_16x16
+#define AFBC_YTR               AFBC_FORMAT_MOD_YTR
+#define AFBC_SPARSE            AFBC_FORMAT_MOD_SPARSE
+#define AFBC_CBR               AFBC_FORMAT_MOD_CBR
+#define AFBC_SPLIT             AFBC_FORMAT_MOD_SPLIT
+#define AFBC_TILED             AFBC_FORMAT_MOD_TILED
+#define AFBC_SC                        AFBC_FORMAT_MOD_SC
+
+#define AFBC_MOD_VALID_BITS (AFBC_SIZE_MASK | AFBC_YTR | AFBC_SPLIT | 
AFBC_SPARSE | AFBC_CBR | AFBC_TILED | AFBC_SC)
+
+extern const u64 malidp_format_modifiers[];
 
 #endif  /* __MALIDP_HW_H__ */
-- 
2.7.4

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