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-rw-r--r--drivers/media/platform/vsp1/vsp1.h1
-rw-r--r--drivers/media/platform/vsp1/vsp1_drv.c8
-rw-r--r--drivers/media/platform/vsp1/vsp1_regs.h10
-rw-r--r--drivers/media/platform/vsp1/vsp1_rpf.c57
4 files changed, 73 insertions, 3 deletions
diff --git a/drivers/media/platform/vsp1/vsp1.h b/drivers/media/platform/vsp1/vsp1.h
index dae987a11a70..46738b6c5f72 100644
--- a/drivers/media/platform/vsp1/vsp1.h
+++ b/drivers/media/platform/vsp1/vsp1.h
@@ -48,6 +48,7 @@ struct vsp1_uds;
struct vsp1_device_info {
u32 version;
+ unsigned int gen;
unsigned int features;
unsigned int rpf_count;
unsigned int uds_count;
diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index 596f26d81494..e2d779fac0eb 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -558,6 +558,7 @@ static const struct dev_pm_ops vsp1_pm_ops = {
static const struct vsp1_device_info vsp1_device_infos[] = {
{
.version = VI6_IP_VERSION_MODEL_VSPS_H2,
+ .gen = 2,
.features = VSP1_HAS_BRU | VSP1_HAS_LUT | VSP1_HAS_SRU,
.rpf_count = 5,
.uds_count = 3,
@@ -566,6 +567,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
.uapi = true,
}, {
.version = VI6_IP_VERSION_MODEL_VSPR_H2,
+ .gen = 2,
.features = VSP1_HAS_BRU | VSP1_HAS_SRU,
.rpf_count = 5,
.uds_count = 1,
@@ -574,6 +576,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
.uapi = true,
}, {
.version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
+ .gen = 2,
.features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_LUT,
.rpf_count = 4,
.uds_count = 1,
@@ -582,6 +585,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
.uapi = true,
}, {
.version = VI6_IP_VERSION_MODEL_VSPS_M2,
+ .gen = 2,
.features = VSP1_HAS_BRU | VSP1_HAS_LUT | VSP1_HAS_SRU,
.rpf_count = 5,
.uds_count = 3,
@@ -590,6 +594,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
.uapi = true,
}, {
.version = VI6_IP_VERSION_MODEL_VSPI_GEN3,
+ .gen = 3,
.features = VSP1_HAS_LUT | VSP1_HAS_SRU,
.rpf_count = 1,
.uds_count = 1,
@@ -597,6 +602,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
.uapi = true,
}, {
.version = VI6_IP_VERSION_MODEL_VSPBD_GEN3,
+ .gen = 3,
.features = VSP1_HAS_BRU,
.rpf_count = 5,
.wpf_count = 1,
@@ -604,6 +610,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
.uapi = true,
}, {
.version = VI6_IP_VERSION_MODEL_VSPBC_GEN3,
+ .gen = 3,
.features = VSP1_HAS_BRU | VSP1_HAS_LUT,
.rpf_count = 5,
.wpf_count = 1,
@@ -611,6 +618,7 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
.uapi = true,
}, {
.version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
+ .gen = 3,
.features = VSP1_HAS_BRU | VSP1_HAS_LIF,
.rpf_count = 5,
.wpf_count = 2,
diff --git a/drivers/media/platform/vsp1/vsp1_regs.h b/drivers/media/platform/vsp1/vsp1_regs.h
index 069216f0eb44..927b5fb94c48 100644
--- a/drivers/media/platform/vsp1/vsp1_regs.h
+++ b/drivers/media/platform/vsp1/vsp1_regs.h
@@ -217,6 +217,16 @@
#define VI6_RPF_SRCM_ADDR_C1 0x0344
#define VI6_RPF_SRCM_ADDR_AI 0x0348
+#define VI6_RPF_MULT_ALPHA 0x036c
+#define VI6_RPF_MULT_ALPHA_A_MMD_NONE (0 << 12)
+#define VI6_RPF_MULT_ALPHA_A_MMD_RATIO (1 << 12)
+#define VI6_RPF_MULT_ALPHA_P_MMD_NONE (0 << 8)
+#define VI6_RPF_MULT_ALPHA_P_MMD_RATIO (1 << 8)
+#define VI6_RPF_MULT_ALPHA_P_MMD_IMAGE (2 << 8)
+#define VI6_RPF_MULT_ALPHA_P_MMD_BOTH (3 << 8)
+#define VI6_RPF_MULT_ALPHA_RATIO_MASK (0xff < 0)
+#define VI6_RPF_MULT_ALPHA_RATIO_SHIFT 0
+
/* -----------------------------------------------------------------------------
* WPF Control Registers
*/
diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c
index 5486ff54a2b3..49168db3f529 100644
--- a/drivers/media/platform/vsp1/vsp1_rpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rpf.c
@@ -141,9 +141,27 @@ static void rpf_configure(struct vsp1_entity *entity,
(left << VI6_RPF_LOC_HCOORD_SHIFT) |
(top << VI6_RPF_LOC_VCOORD_SHIFT));
- /* Use the alpha channel (extended to 8 bits) when available or an
- * alpha value set through the V4L2_CID_ALPHA_COMPONENT control
- * otherwise. Disable color keying.
+ /* On Gen2 use the alpha channel (extended to 8 bits) when available or
+ * a fixed alpha value set through the V4L2_CID_ALPHA_COMPONENT control
+ * otherwise.
+ *
+ * The Gen3 RPF has extended alpha capability and can both multiply the
+ * alpha channel by a fixed global alpha value, and multiply the pixel
+ * components to convert the input to premultiplied alpha.
+ *
+ * As alpha premultiplication is available in the BRU for both Gen2 and
+ * Gen3 we handle it there and use the Gen3 alpha multiplier for global
+ * alpha multiplication only. This however prevents conversion to
+ * premultiplied alpha if no BRU is present in the pipeline. If that use
+ * case turns out to be useful we will revisit the implementation (for
+ * Gen3 only).
+ *
+ * We enable alpha multiplication on Gen3 using the fixed alpha value
+ * set through the V4L2_CID_ALPHA_COMPONENT control when the input
+ * contains an alpha channel. On Gen2 the global alpha is ignored in
+ * that case.
+ *
+ * In all cases, disable color keying.
*/
vsp1_rpf_write(rpf, dl, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_AEXT_EXT |
(fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED
@@ -152,10 +170,43 @@ static void rpf_configure(struct vsp1_entity *entity,
vsp1_rpf_write(rpf, dl, VI6_RPF_VRTCOL_SET,
rpf->alpha << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
+ if (entity->vsp1->info->gen == 3) {
+ u32 mult;
+
+ if (fmtinfo->alpha) {
+ /* When the input contains an alpha channel enable the
+ * alpha multiplier. If the input is premultiplied we
+ * need to multiply both the alpha channel and the pixel
+ * components by the global alpha value to keep them
+ * premultiplied. Otherwise multiply the alpha channel
+ * only.
+ */
+ bool premultiplied = format->flags
+ & V4L2_PIX_FMT_FLAG_PREMUL_ALPHA;
+
+ mult = VI6_RPF_MULT_ALPHA_A_MMD_RATIO
+ | (premultiplied ?
+ VI6_RPF_MULT_ALPHA_P_MMD_RATIO :
+ VI6_RPF_MULT_ALPHA_P_MMD_NONE)
+ | (rpf->alpha << VI6_RPF_MULT_ALPHA_RATIO_SHIFT);
+ } else {
+ /* When the input doesn't contain an alpha channel the
+ * global alpha value is applied in the unpacking unit,
+ * the alpha multiplier isn't needed and must be
+ * disabled.
+ */
+ mult = VI6_RPF_MULT_ALPHA_A_MMD_NONE
+ | VI6_RPF_MULT_ALPHA_P_MMD_NONE;
+ }
+
+ vsp1_rpf_write(rpf, dl, VI6_RPF_MULT_ALPHA, mult);
+ }
+
vsp1_pipeline_propagate_alpha(pipe, &rpf->entity, dl, rpf->alpha);
vsp1_rpf_write(rpf, dl, VI6_RPF_MSK_CTRL, 0);
vsp1_rpf_write(rpf, dl, VI6_RPF_CKEY_CTRL, 0);
+
}
static const struct vsp1_entity_operations rpf_entity_ops = {
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-04 19:39:17 +0000