[PATCH v6 14/27] drm: sun4i: de2/de3: add mixer version enum

Ryan Walklin
2025-02-16T08:57:27Z

The Allwinner DE2 and DE3 display engine mixers are currently identified
by a simple boolean flag. This will not scale to support additional DE
variants.

Convert the boolean flag to an enum.

Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Ryan Walklin <ryan@testtoast.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>

--
Changelog v5..v6:
- Update struct comment regarding change from is_de3 flag to de_type
---
drivers/gpu/drm/sun4i/sun8i_csc.c | 2 +-
drivers/gpu/drm/sun4i/sun8i_mixer.c | 14 +++++++++++--
drivers/gpu/drm/sun4i/sun8i_mixer.h | 27 +++++++++++++++----------
drivers/gpu/drm/sun4i/sun8i_ui_scaler.c | 2 +-
drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 8 ++++----
drivers/gpu/drm/sun4i/sun8i_vi_scaler.c | 4 ++--
6 files changed, 36 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_csc.c b/drivers/gpu/drm/sun4i/sun8i_csc.c
index 0db946ef30b1b..53b00fbf6f332 100644
--- a/drivers/gpu/drm/sun4i/sun8i_csc.c
+++ b/drivers/gpu/drm/sun4i/sun8i_csc.c
@@ -352,7 +352,7 @@ void sun8i_csc_set_ccsc(struct sun8i_mixer *mixer, int layer,
{
u32 base;

- if (mixer->cfg->is_de3) {
+ if (mixer->cfg->de_type == sun8i_mixer_de3) {
sun8i_de3_ccsc_setup(mixer, layer,
fmt_type, encoding, range);
return;
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 3069329210085..ea1f477700d4a 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -584,7 +584,7 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master,
base = sun8i_blender_base(mixer);

/* Reset registers and disable unused sub-engines */
- if (mixer->cfg->is_de3) {
+ if (mixer->cfg->de_type == sun8i_mixer_de3) {
for (i = 0; i < DE3_MIXER_UNIT_SIZE; i += 4)
regmap_write(mixer->engine.regs, i, 0);

@@ -675,6 +675,7 @@ static void sun8i_mixer_remove(struct platform_device *pdev)

static const struct sun8i_mixer_cfg sun8i_a83t_mixer0_cfg = {
.ccsc = CCSC_MIXER0_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.scaler_mask = 0xf,
.scanline_yuv = 2048,
.ui_num = 3,
@@ -683,6 +684,7 @@ static const struct sun8i_mixer_cfg sun8i_a83t_mixer0_cfg = {

static const struct sun8i_mixer_cfg sun8i_a83t_mixer1_cfg = {
.ccsc = CCSC_MIXER1_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.scaler_mask = 0x3,
.scanline_yuv = 2048,
.ui_num = 1,
@@ -691,6 +693,7 @@ static const struct sun8i_mixer_cfg sun8i_a83t_mixer1_cfg = {

static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg = {
.ccsc = CCSC_MIXER0_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.mod_rate = 432000000,
.scaler_mask = 0xf,
.scanline_yuv = 2048,
@@ -700,6 +703,7 @@ static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg = {

static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg = {
.ccsc = CCSC_MIXER0_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.mod_rate = 297000000,
.scaler_mask = 0xf,
.scanline_yuv = 2048,
@@ -709,6 +713,7 @@ static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg = {

static const struct sun8i_mixer_cfg sun8i_r40_mixer1_cfg = {
.ccsc = CCSC_MIXER1_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.mod_rate = 297000000,
.scaler_mask = 0x3,
.scanline_yuv = 2048,
@@ -717,6 +722,7 @@ static const struct sun8i_mixer_cfg sun8i_r40_mixer1_cfg = {
};

static const struct sun8i_mixer_cfg sun8i_v3s_mixer_cfg = {
+ .de_type = sun8i_mixer_de2,
.vi_num = 2,
.ui_num = 1,
.scaler_mask = 0x3,
@@ -727,6 +733,7 @@ static const struct sun8i_mixer_cfg sun8i_v3s_mixer_cfg = {

static const struct sun8i_mixer_cfg sun20i_d1_mixer0_cfg = {
.ccsc = CCSC_D1_MIXER0_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.mod_rate = 297000000,
.scaler_mask = 0x3,
.scanline_yuv = 2048,
@@ -736,6 +743,7 @@ static const struct sun8i_mixer_cfg sun20i_d1_mixer0_cfg = {

static const struct sun8i_mixer_cfg sun20i_d1_mixer1_cfg = {
.ccsc = CCSC_MIXER1_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.mod_rate = 297000000,
.scaler_mask = 0x1,
.scanline_yuv = 1024,
@@ -745,6 +753,7 @@ static const struct sun8i_mixer_cfg sun20i_d1_mixer1_cfg = {

static const struct sun8i_mixer_cfg sun50i_a64_mixer0_cfg = {
.ccsc = CCSC_MIXER0_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.mod_rate = 297000000,
.scaler_mask = 0xf,
.scanline_yuv = 4096,
@@ -754,6 +763,7 @@ static const struct sun8i_mixer_cfg sun50i_a64_mixer0_cfg = {

static const struct sun8i_mixer_cfg sun50i_a64_mixer1_cfg = {
.ccsc = CCSC_MIXER1_LAYOUT,
+ .de_type = sun8i_mixer_de2,
.mod_rate = 297000000,
.scaler_mask = 0x3,
.scanline_yuv = 2048,
@@ -763,7 +773,7 @@ static const struct sun8i_mixer_cfg sun50i_a64_mixer1_cfg = {

static const struct sun8i_mixer_cfg sun50i_h6_mixer0_cfg = {
.ccsc = CCSC_MIXER0_LAYOUT,
- .is_de3 = true,
+ .de_type = sun8i_mixer_de3,
.has_formatter = 1,
.mod_rate = 600000000,
.scaler_mask = 0xf,
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/sun8i_mixer.h
index 5f465a974fbdf..baf2d024898a9 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -152,6 +152,11 @@ enum {
CCSC_D1_MIXER0_LAYOUT,
};

+enum sun8i_mixer_type {
+ sun8i_mixer_de2,
+ sun8i_mixer_de3,
+};
+
/**
* struct sun8i_mixer_cfg - mixer HW configuration
* @vi_num: number of VI channels
@@ -163,19 +168,19 @@ enum {
* @ccsc: select set of CCSC base addresses from the enumeration above.
* @mod_rate: module clock rate that needs to be set in order to have
* a functional block.
- * @is_de3: true, if this is next gen display engine 3.0, false otherwise.
+ * @de_type: sun8i_mixer_type enum representing the display engine generation.
* @has_formatter: true, if mixer has formatter core, for 10-bit and YUV handling
* @scaline_yuv: size of a scanline for VI scaler for YUV formats.
*/
struct sun8i_mixer_cfg {
- int vi_num;
- int ui_num;
- int scaler_mask;
- int ccsc;
- unsigned long mod_rate;
- unsigned int is_de3 : 1;
- unsigned int has_formatter : 1;
- unsigned int scanline_yuv;
+ int vi_num;
+ int ui_num;
+ int scaler_mask;
+ int ccsc;
+ unsigned long mod_rate;
+ unsigned int de_type;
+ unsigned int has_formatter : 1;
+ unsigned int scanline_yuv;
};

struct sun8i_color_model {
@@ -227,13 +232,13 @@ engine_to_sun8i_mixer(struct sunxi_engine *engine)
static inline u32
sun8i_blender_base(struct sun8i_mixer *mixer)
{
- return mixer->cfg->is_de3 ? DE3_BLD_BASE : DE2_BLD_BASE;
+ return mixer->cfg->de_type == sun8i_mixer_de3 ? DE3_BLD_BASE : DE2_BLD_BASE;
}

static inline u32
sun8i_channel_base(struct sun8i_mixer *mixer, int channel)
{
- if (mixer->cfg->is_de3)
+ if (mixer->cfg->de_type == sun8i_mixer_de3)
return DE3_CH_BASE + channel * DE3_CH_SIZE;
else
return DE2_CH_BASE + channel * DE2_CH_SIZE;
diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_scaler.c b/drivers/gpu/drm/sun4i/sun8i_ui_scaler.c
index ae0806bccac7f..504ffa0971a4f 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_scaler.c
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_scaler.c
@@ -93,7 +93,7 @@ static u32 sun8i_ui_scaler_base(struct sun8i_mixer *mixer, int channel)
{
int vi_num = mixer->cfg->vi_num;

- if (mixer->cfg->is_de3)
+ if (mixer->cfg->de_type == sun8i_mixer_de3)
return DE3_VI_SCALER_UNIT_BASE +
DE3_VI_SCALER_UNIT_SIZE * vi_num +
DE3_UI_SCALER_UNIT_SIZE * (channel - vi_num);
diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
index 3c657b069d1f4..4647e9bcccaa7 100644
--- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
@@ -25,7 +25,7 @@ static void sun8i_vi_layer_update_alpha(struct sun8i_mixer *mixer, int channel,

ch_base = sun8i_channel_base(mixer, channel);

- if (mixer->cfg->is_de3) {
+ if (mixer->cfg->de_type >= sun8i_mixer_de3) {
mask = SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MASK |
SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MODE_MASK;
val = SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA
@@ -483,7 +483,7 @@ struct sun8i_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
layer->channel = index;
layer->overlay = 0;

- if (mixer->cfg->is_de3) {
+ if (mixer->cfg->de_type >= sun8i_mixer_de3) {
formats = sun8i_vi_layer_de3_formats;
format_count = ARRAY_SIZE(sun8i_vi_layer_de3_formats);
} else {
@@ -507,7 +507,7 @@ struct sun8i_layer *sun8i_vi_layer_init_one(struct drm_device *drm,

plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;

- if (mixer->cfg->vi_num == 1 || mixer->cfg->is_de3) {
+ if (mixer->cfg->vi_num == 1 || mixer->cfg->de_type >= sun8i_mixer_de3) {
ret = drm_plane_create_alpha_property(&layer->plane);
if (ret) {
dev_err(drm->dev, "Couldn't add alpha property\n");
@@ -524,7 +524,7 @@ struct sun8i_layer *sun8i_vi_layer_init_one(struct drm_device *drm,

supported_encodings = BIT(DRM_COLOR_YCBCR_BT601) |
BIT(DRM_COLOR_YCBCR_BT709);
- if (mixer->cfg->is_de3)
+ if (mixer->cfg->de_type >= sun8i_mixer_de3)
supported_encodings |= BIT(DRM_COLOR_YCBCR_BT2020);

supported_ranges = BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c b/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c
index 2e49a6e5f1f1c..aa346c3beb303 100644
--- a/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_scaler.c
@@ -835,7 +835,7 @@ static const u32 bicubic4coefftab32[480] = {

static u32 sun8i_vi_scaler_base(struct sun8i_mixer *mixer, int channel)
{
- if (mixer->cfg->is_de3)
+ if (mixer->cfg->de_type == sun8i_mixer_de3)
return DE3_VI_SCALER_UNIT_BASE +
DE3_VI_SCALER_UNIT_SIZE * channel;
else
@@ -982,7 +982,7 @@ void sun8i_vi_scaler_setup(struct sun8i_mixer *mixer, int layer,
cvphase = vphase;
}

- if (mixer->cfg->is_de3) {
+ if (mixer->cfg->de_type >= sun8i_mixer_de3) {
u32 val;

if (format->hsub == 1 && format->vsub == 1)
--
2.48.1