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drm/ast: Replace ast_cursor_move() with ast_cursor_show()

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Having a cursor move function is misleading, as it actually enables the
cursor's image for displaying. So rename it to ast_cursor_show(). It's
semantics is to show a cursor at the specified location on the screen.
The displayed cursor is always the image in the cursor front BO.

This change also simplifies struct ast_crtc to being a mere wrapper around
around struct drm_crtc. It will be removed by a later patch.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-7-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2020-07-02 13:50:21 +02:00
parent 75d9d8e66d
commit 81039adc92
3 changed files with 37 additions and 25 deletions
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46
drivers/gpu/drm/ast/ast_cursor.c
View File

@ -227,12 +227,27 @@ void ast_cursor_page_flip(struct ast_private *ast)
ast->cursor.next_index %= ARRAY_SIZE(ast->cursor.gbo);
}
int ast_cursor_move(struct drm_crtc *crtc, int x, int y)
static void ast_cursor_set_location(struct ast_private *ast, u16 x, u16 y,
u8 x_offset, u8 y_offset)
{
u8 x0 = (x & 0x00ff);
u8 x1 = (x & 0x0f00) >> 8;
u8 y0 = (y & 0x00ff);
u8 y1 = (y & 0x0700) >> 8;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc2, x_offset);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc3, y_offset);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc4, x0);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, x1);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, y0);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, y1);
}
int ast_cursor_show(struct ast_private *ast, int x, int y,
unsigned int offset_x, unsigned int offset_y)
{
struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
struct ast_private *ast = to_ast_private(crtc->dev);
struct drm_gem_vram_object *gbo;
int x_offset, y_offset;
u8 x_offset, y_offset;
u8 *dst, *sig;
u8 jreg;
@ -245,23 +260,20 @@ int ast_cursor_move(struct drm_crtc *crtc, int x, int y)
writel(x, sig + AST_HWC_SIGNATURE_X);
writel(y, sig + AST_HWC_SIGNATURE_Y);
x_offset = ast_crtc->offset_x;
y_offset = ast_crtc->offset_y;
if (x < 0) {
x_offset = (-x) + ast_crtc->offset_x;
x_offset = (-x) + offset_x;
x = 0;
} else {
x_offset = offset_x;
}
if (y < 0) {
y_offset = (-y) + offset_y;
y = 0;
} else {
y_offset = offset_y;
}
if (y < 0) {
y_offset = (-y) + ast_crtc->offset_y;
y = 0;
}
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc2, x_offset);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc3, y_offset);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc4, (x & 0xff));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, ((x >> 8) & 0x0f));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, (y & 0xff));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, ((y >> 8) & 0x07));
ast_cursor_set_location(ast, x, y, x_offset, y_offset);
/* dummy write to fire HWC */
jreg = 0x02 |

4
drivers/gpu/drm/ast/ast_drv.h
View File

@ -239,7 +239,6 @@ struct ast_connector {
struct ast_crtc {
struct drm_crtc base;
u8 offset_x, offset_y;
};
#define to_ast_crtc(x) container_of(x, struct ast_crtc, base)
@ -320,6 +319,7 @@ int ast_cursor_init(struct ast_private *ast);
void ast_cursor_fini(struct ast_private *ast);
int ast_cursor_blit(struct ast_private *ast, struct drm_framebuffer *fb);
void ast_cursor_page_flip(struct ast_private *ast);
int ast_cursor_move(struct drm_crtc *crtc, int x, int y);
int ast_cursor_show(struct ast_private *ast, int x, int y,
unsigned int offset_x, unsigned int offset_y);
#endif

12
drivers/gpu/drm/ast/ast_mode.c
View File

@ -661,21 +661,21 @@ ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_plane_state *state = plane->state;
struct drm_crtc *crtc = state->crtc;
struct drm_framebuffer *fb = state->fb;
struct ast_private *ast = to_ast_private(plane->dev);
struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
struct ast_private *ast = plane->dev->dev_private;
unsigned int offset_x, offset_y;
u8 jreg;
ast_crtc->offset_x = AST_MAX_HWC_WIDTH - fb->width;
ast_crtc->offset_y = AST_MAX_HWC_WIDTH - fb->height;
offset_x = AST_MAX_HWC_WIDTH - fb->width;
offset_y = AST_MAX_HWC_WIDTH - fb->height;
if (state->fb != old_state->fb) {
/* A new cursor image was installed. */
ast_cursor_page_flip(ast);
}
ast_cursor_move(crtc, state->crtc_x, state->crtc_y);
ast_cursor_show(ast, state->crtc_x, state->crtc_y,
offset_x, offset_y);
jreg = 0x2;
/* enable ARGB cursor */