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Subject[PATCH 06/10] drm/sun4i: Move and extend format-related helpers and tables
Date
This moves the various helpers and tables related to format detection
and conversion to a dedicated file, while adding a bunch of new helpers
(especially for YUV and tiling support) along the way.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
drivers/gpu/drm/sun4i/Makefile | 1 +
drivers/gpu/drm/sun4i/sun4i_backend.c | 54 ++--------
drivers/gpu/drm/sun4i/sun4i_format.c | 193 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/sun4i/sun4i_format.h | 35 ++++++
4 files changed, 235 insertions(+), 48 deletions(-)
create mode 100644 drivers/gpu/drm/sun4i/sun4i_format.c
create mode 100644 drivers/gpu/drm/sun4i/sun4i_format.h

diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
index 582607c0c488..c89c42ff803e 100644
--- a/drivers/gpu/drm/sun4i/Makefile
+++ b/drivers/gpu/drm/sun4i/Makefile
@@ -4,6 +4,7 @@ sun4i-frontend-y += sun4i_frontend.o

sun4i-drm-y += sun4i_drv.o
sun4i-drm-y += sun4i_framebuffer.o
+sun4i-drm-y += sun4i_format.o

sun4i-drm-hdmi-y += sun4i_hdmi_ddc_clk.o
sun4i-drm-hdmi-y += sun4i_hdmi_enc.o
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c
index 1fad0714c70e..e8af9f3cf20b 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -29,6 +29,7 @@
#include "sun4i_drv.h"
#include "sun4i_frontend.h"
#include "sun4i_layer.h"
+#include "sun4i_format.h"
#include "sunxi_engine.h"

struct sun4i_backend_quirks {
@@ -36,50 +37,6 @@ struct sun4i_backend_quirks {
bool needs_output_muxing;
};

-static const u32 sunxi_rgb2yuv_coef[12] = {
- 0x00000107, 0x00000204, 0x00000064, 0x00000108,
- 0x00003f69, 0x00003ed6, 0x000001c1, 0x00000808,
- 0x000001c1, 0x00003e88, 0x00003fb8, 0x00000808
-};
-
-static const u32 sunxi_bt601_yuv2rgb_coef[12] = {
- 0x000004a7, 0x00001e6f, 0x00001cbf, 0x00000877,
- 0x000004a7, 0x00000000, 0x00000662, 0x00003211,
- 0x000004a7, 0x00000812, 0x00000000, 0x00002eb1,
-};
-
-static inline bool sun4i_backend_format_is_planar_yuv(uint32_t format)
-{
- switch (format) {
- case DRM_FORMAT_YUV411:
- case DRM_FORMAT_YUV422:
- case DRM_FORMAT_YUV444:
- return true;
- default:
- return false;
- }
-}
-
-static inline bool sun4i_backend_format_is_packed_yuv422(uint32_t format)
-{
- switch (format) {
- case DRM_FORMAT_YUYV:
- case DRM_FORMAT_YVYU:
- case DRM_FORMAT_UYVY:
- case DRM_FORMAT_VYUY:
- return true;
-
- default:
- return false;
- }
-}
-
-static inline bool sun4i_backend_format_is_yuv(uint32_t format)
-{
- return sun4i_backend_format_is_planar_yuv(format) ||
- sun4i_backend_format_is_packed_yuv422(format);
-}
-
static void sun4i_backend_apply_color_correction(struct sunxi_engine *engine)
{
int i;
@@ -259,7 +216,7 @@ static int sun4i_backend_update_yuv_format(struct sun4i_backend *backend,
SUN4I_BACKEND_ATTCTL_REG0_LAY_YUVEN,
SUN4I_BACKEND_ATTCTL_REG0_LAY_YUVEN);

- if (sun4i_backend_format_is_packed_yuv422(format))
+ if (sun4i_format_is_packed_yuv422(format))
val |= SUN4I_BACKEND_IYUVCTL_FBFMT_PACKED_YUV422;
else
DRM_DEBUG_DRIVER("Unknown YUV format\n");
@@ -310,7 +267,7 @@ int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
DRM_DEBUG_DRIVER("Switching display backend interlaced mode %s\n",
interlaced ? "on" : "off");

- if (sun4i_backend_format_is_yuv(fb->format->format))
+ if (sun4i_format_is_yuv(fb->format->format))
return sun4i_backend_update_yuv_format(backend, layer, plane);

ret = sun4i_backend_drm_format_to_layer(fb->format->format, &val);
@@ -404,7 +361,7 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
*/
paddr -= PHYS_OFFSET;

- if (sun4i_backend_format_is_yuv(fb->format->format))
+ if (sun4i_format_is_yuv(fb->format->format))
return sun4i_backend_update_yuv_buffer(backend, fb, paddr);

/* Write the 32 lower bits of the address (in bits) */
@@ -549,10 +506,11 @@ static int sun4i_backend_atomic_check(struct sunxi_engine *engine,
DRM_DEBUG_DRIVER("Plane FB format is %s\n",
drm_get_format_name(fb->format->format,
&format_name));
+
if (fb->format->has_alpha)
num_alpha_planes++;

- if (sun4i_backend_format_is_yuv(fb->format->format)) {
+ if (sun4i_format_is_yuv(fb->format->format)) {
DRM_DEBUG_DRIVER("Plane FB format is YUV\n");
num_yuv_planes++;
}
diff --git a/drivers/gpu/drm/sun4i/sun4i_format.c b/drivers/gpu/drm/sun4i/sun4i_format.c
new file mode 100644
index 000000000000..3830767e6d5b
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_format.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2015-2018 Free Electrons/Bootlin
+ *
+ * Maxime Ripard <maxime.ripard@bootlin.com>
+ * Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/component.h>
+#include <linux/kfifo.h>
+#include <linux/of_graph.h>
+#include <linux/of_reserved_mem.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_of.h>
+
+#include "sun4i_drv.h"
+#include "sun4i_format.h"
+
+const u32 sunxi_rgb2yuv_coef[12] = {
+ 0x00000107, 0x00000204, 0x00000064, 0x00000108,
+ 0x00003f69, 0x00003ed6, 0x000001c1, 0x00000808,
+ 0x000001c1, 0x00003e88, 0x00003fb8, 0x00000808
+};
+
+const u32 sunxi_bt601_yuv2rgb_coef[12] = {
+ 0x000004a7, 0x00001e6f, 0x00001cbf, 0x00000877,
+ 0x000004a7, 0x00000000, 0x00000662, 0x00003211,
+ 0x000004a7, 0x00000812, 0x00000000, 0x00002eb1,
+};
+
+bool sun4i_format_is_rgb(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_ARGB4444:
+ case DRM_FORMAT_RGBA4444:
+ case DRM_FORMAT_ARGB1555:
+ case DRM_FORMAT_RGBA5551:
+ case DRM_FORMAT_RGB888:
+ case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_is_yuv(uint32_t format)
+{
+ return sun4i_format_is_yuv411(format) ||
+ sun4i_format_is_yuv420(format) ||
+ sun4i_format_is_yuv422(format) ||
+ sun4i_format_is_yuv444(format);
+}
+
+bool sun4i_format_is_yuv411(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_YUV411:
+ case DRM_FORMAT_YVU411:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_is_yuv420(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV21:
+ case DRM_FORMAT_YUV420:
+ case DRM_FORMAT_YVU420:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_is_yuv422(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_YVYU:
+ case DRM_FORMAT_UYVY:
+ case DRM_FORMAT_VYUY:
+ case DRM_FORMAT_NV16:
+ case DRM_FORMAT_NV61:
+ case DRM_FORMAT_YUV422:
+ case DRM_FORMAT_YVU422:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_is_yuv444(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_YUV444:
+ case DRM_FORMAT_YVU444:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_is_packed(uint32_t format)
+{
+ if (sun4i_format_is_rgb(format))
+ return true;
+
+ switch (format) {
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_YVYU:
+ case DRM_FORMAT_UYVY:
+ case DRM_FORMAT_VYUY:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_is_semiplanar(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV21:
+ case DRM_FORMAT_NV16:
+ case DRM_FORMAT_NV61:
+ case DRM_FORMAT_NV24:
+ case DRM_FORMAT_NV42:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_is_planar(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_YUV410:
+ case DRM_FORMAT_YVU410:
+ case DRM_FORMAT_YUV411:
+ case DRM_FORMAT_YVU411:
+ case DRM_FORMAT_YUV420:
+ case DRM_FORMAT_YVU420:
+ case DRM_FORMAT_YUV422:
+ case DRM_FORMAT_YVU422:
+ case DRM_FORMAT_YUV444:
+ case DRM_FORMAT_YVU444:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool sun4i_format_supports_tiling(uint32_t format)
+{
+ switch (format) {
+ /* Semiplanar */
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV21:
+ case DRM_FORMAT_NV16:
+ case DRM_FORMAT_NV61:
+ /* Planar */
+ case DRM_FORMAT_YUV420:
+ case DRM_FORMAT_YVU420:
+ case DRM_FORMAT_YUV422:
+ case DRM_FORMAT_YVU422:
+ case DRM_FORMAT_YUV411:
+ case DRM_FORMAT_YVU411:
+ return true;
+
+ default:
+ return false;
+ }
+}
diff --git a/drivers/gpu/drm/sun4i/sun4i_format.h b/drivers/gpu/drm/sun4i/sun4i_format.h
new file mode 100644
index 000000000000..1d6364cd3681
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_format.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2015-2018 Free Electrons/Bootlin
+ *
+ * Maxime Ripard <maxime.ripard@bootlin.com>
+ * Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_FORMAT_H_
+#define _SUN4I_FORMAT_H_
+
+extern const u32 sunxi_rgb2yuv_coef[12];
+extern const u32 sunxi_bt601_yuv2rgb_coef[12];
+
+bool sun4i_format_is_rgb(uint32_t format);
+bool sun4i_format_is_yuv(uint32_t format);
+bool sun4i_format_is_yuv411(uint32_t format);
+bool sun4i_format_is_yuv420(uint32_t format);
+bool sun4i_format_is_yuv422(uint32_t format);
+bool sun4i_format_is_yuv444(uint32_t format);
+bool sun4i_format_is_packed(uint32_t format);
+bool sun4i_format_is_semiplanar(uint32_t format);
+bool sun4i_format_is_planar(uint32_t format);
+bool sun4i_format_supports_tiling(uint32_t format);
+
+static inline bool sun4i_format_is_packed_yuv422(uint32_t format)
+{
+ return sun4i_format_is_packed(format) && sun4i_format_is_yuv422(format);
+}
+
+#endif /* _SUN4I_FORMAT_H_ */
--
2.16.2
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