[PATCH 08/23] drm/format-helper: Use struct drm_pixmap for drm_fb_xrgb8888_to_xrgb1555()

[Thomas Zimmermann]

Store the source-buffer parameters of drm_fb_xrgb8888_to_xrgb1555()
in struct drm_pixmap. Update the function's interface and all of its
callers.

Callers of drm_fb_xrgb8888_to_xrgb1555() initialize the pixmap's
instance from a pre-existing instance of struct drm_framebuffer.
There's potential to simplify some of that code in a later patch.

Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
 drivers/gpu/drm/drm_format_helper.c           | 19 +++++++------------
 .../gpu/drm/tests/drm_format_helper_test.c    |  4 +++-
 include/drm/drm_format_helper.h               |  4 ++--
 3 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 4bc1d05826086..a7356bfc04bf3 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -556,15 +556,13 @@ static void drm_fb_xrgb8888_to_xrgb1555_line(void *dbuf, const void *sbuf, unsig
  * @dst: Array of XRGB1555 destination buffers
  * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines
  *             within @dst; can be NULL if scanlines are stored next to each other.
- * @src: Array of XRGB8888 source buffer
- * @fb: DRM framebuffer
- * @clip: Clip rectangle area to copy
+ * @src_pix: Source pixmap to copy from
  * @state: Transform and conversion state
  *
  * This function copies parts of a framebuffer to display memory and converts
- * the color format during the process. The parameters @dst, @dst_pitch and
- * @src refer to arrays. Each array must have at least as many entries as
- * there are planes in @fb's format. Each entry stores the value for the
+ * the color format during the process. The parameters @dst and @dst_pitch
+ * refer to arrays. Each array must have at least as many entries as there
+ * are planes in the pixmap's format. Each entry stores the value for the
  * format's respective color plane at the same index.
  *
  * This function does not apply clipping on @dst (i.e. the destination is at the
@@ -574,15 +572,12 @@ static void drm_fb_xrgb8888_to_xrgb1555_line(void *dbuf, const void *sbuf, unsig
  * XRGB8888 natively.
  */
 void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
-				 const struct iosys_map *src, const struct drm_framebuffer *fb,
-				 const struct drm_rect *clip, struct drm_format_conv_state *state)
+				 const struct drm_pixmap *src_pix,
+				 struct drm_format_conv_state *state)
 {
 	static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = {
 		2,
 	};
-	struct drm_pixmap pixmap;
-	struct drm_pixmap *src_pix = &pixmap;
-	drm_pixmap_init_from_framebuffer(src_pix, fb, src, clip);
 
 	drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src_pix, false, state,
 		    drm_fb_xrgb8888_to_xrgb1555_line);
@@ -1099,7 +1094,7 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d
 			drm_fb_xrgb8888_to_rgb565(dst, dst_pitch, src_pix, state, false);
 			return 0;
 		} else if (dst_format == DRM_FORMAT_XRGB1555) {
-			drm_fb_xrgb8888_to_xrgb1555(dst, dst_pitch, src, fb, clip, state);
+			drm_fb_xrgb8888_to_xrgb1555(dst, dst_pitch, src_pix, state);
 			return 0;
 		} else if (dst_format == DRM_FORMAT_ARGB1555) {
 			drm_fb_xrgb8888_to_argb1555(dst, dst_pitch, src, fb, clip, state);
diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
index 14ff5e4883f84..0277e27790c3c 100644
--- a/drivers/gpu/drm/tests/drm_format_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
@@ -737,6 +737,7 @@ static void drm_test_fb_xrgb8888_to_xrgb1555(struct kunit *test)
 	u16 *buf = NULL;
 	__le32 *xrgb8888 = NULL;
 	struct iosys_map dst, src;
+	struct drm_pixmap src_pix;
 
 	struct drm_framebuffer fb = {
 		.format = drm_format_info(DRM_FORMAT_XRGB8888),
@@ -758,7 +759,8 @@ static void drm_test_fb_xrgb8888_to_xrgb1555(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_xrgb1555(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
+	drm_pixmap_init_from_framebuffer(&src_pix, &fb, &src, &params->clip);
+	drm_fb_xrgb8888_to_xrgb1555(&dst, dst_pitch, &src_pix, &fmtcnv_state);
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
index 121a8973c8154..8852c5e7fe116 100644
--- a/include/drm/drm_format_helper.h
+++ b/include/drm/drm_format_helper.h
@@ -109,8 +109,8 @@ void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_pi
 			       const struct drm_pixmap *src_pix,
 			       struct drm_format_conv_state *state, bool swab);
 void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
-				 const struct iosys_map *src, const struct drm_framebuffer *fb,
-				 const struct drm_rect *clip, struct drm_format_conv_state *state);
+				 const struct drm_pixmap *src_pix,
+				 struct drm_format_conv_state *state);
 void drm_fb_xrgb8888_to_argb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
 				 const struct iosys_map *src, const struct drm_framebuffer *fb,
 				 const struct drm_rect *clip, struct drm_format_conv_state *state);
-- 
2.43.0