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Subject[PATCH 16/17] drm/sun4i: Wire in DE2 YUV support
Date
Now that we have all required bits, add support for YUV formats.

DRM subsystem doesn't know YUV411 semi-planar format, so leave that out
for now.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
drivers/gpu/drm/sun4i/sun8i_layer.c | 56 +++++++++++++++++-
drivers/gpu/drm/sun4i/sun8i_mixer.c | 110 +++++++++++++++++++++++++++---------
2 files changed, 137 insertions(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_layer.c b/drivers/gpu/drm/sun4i/sun8i_layer.c
index 6860271e5415..9e431eaa3430 100644
--- a/drivers/gpu/drm/sun4i/sun8i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_layer.c
@@ -112,7 +112,7 @@ static const struct drm_plane_funcs sun8i_mixer_layer_funcs = {
.update_plane = drm_atomic_helper_update_plane,
};

-static const uint32_t sun8i_mixer_layer_formats[] = {
+static const u32 sun8i_mixer_ui_layer_formats[] = {
DRM_FORMAT_ABGR1555,
DRM_FORMAT_ABGR4444,
DRM_FORMAT_ABGR8888,
@@ -135,26 +135,76 @@ static const uint32_t sun8i_mixer_layer_formats[] = {
DRM_FORMAT_XRGB8888,
};

+/*
+ * While all RGB formats are supported, VI planes don't support
+ * alpha blending, so there is no point having formats with alpha
+ * channel if their opaque analog exist.
+ */
+static const u32 sun8i_mixer_vi_layer_formats[] = {
+ DRM_FORMAT_ABGR1555,
+ DRM_FORMAT_ABGR4444,
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_ARGB4444,
+ DRM_FORMAT_BGR565,
+ DRM_FORMAT_BGR888,
+ DRM_FORMAT_BGRA5551,
+ DRM_FORMAT_BGRA4444,
+ DRM_FORMAT_BGRX8888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGBA4444,
+ DRM_FORMAT_RGBA5551,
+ DRM_FORMAT_RGBX8888,
+ DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_XRGB8888,
+
+ DRM_FORMAT_NV16,
+ DRM_FORMAT_NV12,
+ DRM_FORMAT_NV21,
+ DRM_FORMAT_NV61,
+ DRM_FORMAT_UYVY,
+ DRM_FORMAT_VYUY,
+ DRM_FORMAT_YUYV,
+ DRM_FORMAT_YVYU,
+ DRM_FORMAT_YUV411,
+ DRM_FORMAT_YUV420,
+ DRM_FORMAT_YUV422,
+ DRM_FORMAT_YUV444,
+ DRM_FORMAT_YVU411,
+ DRM_FORMAT_YVU420,
+ DRM_FORMAT_YVU422,
+ DRM_FORMAT_YVU444,
+};
+
static struct sun8i_layer *sun8i_layer_init_one(struct drm_device *drm,
struct sun8i_mixer *mixer,
int index)
{
struct sun8i_layer *layer;
enum drm_plane_type type;
+ unsigned int format_cnt;
+ const u32 *formats;
int ret;

layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
if (!layer)
return ERR_PTR(-ENOMEM);

+ if (index < mixer->cfg->vi_num) {
+ formats = sun8i_mixer_vi_layer_formats;
+ format_cnt = ARRAY_SIZE(sun8i_mixer_vi_layer_formats);
+ } else {
+ formats = sun8i_mixer_ui_layer_formats;
+ format_cnt = ARRAY_SIZE(sun8i_mixer_ui_layer_formats);
+ }
+
type = index == mixer->cfg->vi_num ?
DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;

/* possible crtcs are set later */
ret = drm_universal_plane_init(drm, &layer->plane, 0,
&sun8i_mixer_layer_funcs,
- sun8i_mixer_layer_formats,
- ARRAY_SIZE(sun8i_mixer_layer_formats),
+ formats, format_cnt,
NULL, type, NULL);
if (ret) {
dev_err(drm->dev, "Couldn't initialize layer\n");
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 6fb7dfd789f9..4d2b42804008 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -428,6 +428,7 @@ int sun8i_mixer_update_vi_layer_coord(struct sun8i_mixer *mixer,
u32 src_w, src_h, dst_w, dst_h;
u32 outsize, insize;
u32 hphase, vphase;
+ bool subsampled;

DRM_DEBUG_DRIVER("Updating VI layer %d\n", layer);

@@ -439,19 +440,45 @@ int sun8i_mixer_update_vi_layer_coord(struct sun8i_mixer *mixer,
hphase = state->src.x1 & 0xffff;
vphase = state->src.y1 & 0xffff;

+ /* make coordinates dividable by subsampling factor */
+ if (format->hsub > 1) {
+ int mask, remainder;
+
+ mask = format->hsub - 1;
+ remainder = (state->src.x1 >> 16) & mask;
+ src_w = (src_w + remainder) & ~mask;
+ hphase += remainder << 16;
+ }
+
+ if (format->vsub > 1) {
+ int mask, remainder;
+
+ mask = format->vsub - 1;
+ remainder = (state->src.y1 >> 16) & mask;
+ src_h = (src_h + remainder) & ~mask;
+ vphase += remainder << 16;
+ }
+
insize = SUN8I_MIXER_SIZE(src_w, src_h);
outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);

/* Set height and width */
DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
- state->src.x1 >> 16, state->src.y1 >> 16);
+ (state->src.x1 >> 16) & ~(format->hsub - 1),
+ (state->src.y1 >> 16) & ~(format->vsub - 1));
DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_VI_LAYER_SIZE(layer, 0), insize);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_VI_OVL_SIZE(layer), insize);

- if (insize != outsize || hphase || vphase) {
+ /*
+ * Scaler must be enabled for subsampled formats, so it scales
+ * chroma to same size as luma.
+ */
+ subsampled = format->hsub > 1 || format->vsub > 1;
+
+ if (insize != outsize || subsampled || hphase || vphase) {
u32 hscale, vscale;

DRM_DEBUG_DRIVER("HW scaling is enabled\n");
@@ -510,17 +537,31 @@ int sun8i_mixer_update_vi_layer_formats(struct sun8i_mixer *mixer,
u32 val;

fmt_info = sun8i_mixer_format_info(state->fb->format->format);
- if (!fmt_info || !fmt_info->rgb) {
+ if (!fmt_info) {
DRM_DEBUG_DRIVER("Invalid format\n");
return -EINVAL;
}

- val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET;
+ val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_CHAN_VI_LAYER_ATTR(layer, 0),
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK |
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE,
- val | SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE);
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK, val);
+
+ if (fmt_info->csc != SUN8I_CSC_MODE_OFF) {
+ sun8i_csc_set_ccsc_coefficients(mixer, layer, fmt_info->csc);
+ sun8i_csc_enable_ccsc(mixer, layer, true);
+ } else {
+ sun8i_csc_enable_ccsc(mixer, layer, false);
+ }
+
+ if (fmt_info->rgb)
+ val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE;
+ else
+ val = 0;
+
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR(layer, 0),
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE, val);

return 0;
}
@@ -567,34 +608,51 @@ int sun8i_mixer_update_vi_layer_buffer(struct sun8i_mixer *mixer,
{
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
+ const struct drm_format_info *format = fb->format;
struct drm_gem_cma_object *gem;
+ u32 dx, dy, src_x, src_y;
dma_addr_t paddr;
- int bpp;
+ int i;

- /* Get the physical address of the buffer in memory */
- gem = drm_fb_cma_get_gem_obj(fb, 0);
+ /* Adjust x and y to be dividable by subsampling factor */
+ src_x = (state->src.x1 >> 16) & ~(format->hsub - 1);
+ src_y = (state->src.y1 >> 16) & ~(format->vsub - 1);

- DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
+ for (i = 0; i < format->num_planes; i++) {
+ /* Get the physical address of the buffer in memory */
+ gem = drm_fb_cma_get_gem_obj(fb, i);

- /* Compute the start of the displayed memory */
- bpp = fb->format->cpp[0];
- paddr = gem->paddr + fb->offsets[0];
+ DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);

- /* Fixup framebuffer address for src coordinates */
- paddr += (state->src.x1 >> 16) * bpp;
- paddr += (state->src.y1 >> 16) * fb->pitches[0];
+ /* Compute the start of the displayed memory */
+ paddr = gem->paddr + fb->offsets[i];

- /* Set the line width */
- DRM_DEBUG_DRIVER("Layer line width: %d bytes\n", fb->pitches[0]);
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_PITCH(layer, 0, 0),
- fb->pitches[0]);
+ dx = src_x;
+ dy = src_y;

- DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);
+ if (i > 0) {
+ dx /= format->hsub;
+ dy /= format->vsub;
+ }

- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(layer, 0, 0),
- lower_32_bits(paddr));
+ /* Fixup framebuffer address for src coordinates */
+ paddr += dx * format->cpp[i];
+ paddr += dy * fb->pitches[i];
+
+ /* Set the line width */
+ DRM_DEBUG_DRIVER("Layer %d. line width: %d bytes\n",
+ i + 1, fb->pitches[i]);
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_PITCH(layer, 0, i),
+ fb->pitches[i]);
+
+ DRM_DEBUG_DRIVER("Setting %d. buffer address to %pad\n",
+ i + 1, &paddr);
+
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(layer, 0, i),
+ lower_32_bits(paddr));
+ }

return 0;
}
--
2.15.0
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