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drm/ast: Fix video broken in some resolutions on ast2600

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Some cases are not handled well for ast2600.

Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916091706.4559-1-jammy_huang@aspeedtech.com
This commit is contained in:
Jammy Huang 2022-09-16 17:17:06 +08:00 committed by Thomas Zimmermann
parent 71dee0361b
commit d6cbe630f3
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/ast/ast_mode.c
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@ -313,7 +313,7 @@ static void ast_set_crtc_reg(struct ast_private *ast,
u8 jreg05 = 0, jreg07 = 0, jreg09 = 0, jregAC = 0, jregAD = 0, jregAE = 0;
u16 temp, precache = 0;
if ((ast->chip == AST2500) &&
if ((ast->chip == AST2500 || ast->chip == AST2600) &&
(vbios_mode->enh_table->flags & AST2500PreCatchCRT))
precache = 40;
@ -354,6 +354,12 @@ static void ast_set_crtc_reg(struct ast_private *ast,
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAC, 0x00, jregAC);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAD, 0x00, jregAD);
// Workaround for HSync Time non octave pixels (1920x1080@60Hz HSync 44 pixels);
if ((ast->chip == AST2600) && (mode->crtc_vdisplay == 1080))
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xFC, 0xFD, 0x02);
else
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xFC, 0xFD, 0x00);
/* vert timings */
temp = (mode->crtc_vtotal) - 2;
if (temp & 0x100)
@ -431,7 +437,7 @@ static void ast_set_dclk_reg(struct ast_private *ast,
{
const struct ast_vbios_dclk_info *clk_info;
if (ast->chip == AST2500)
if ((ast->chip == AST2500) || (ast->chip == AST2600))
clk_info = &dclk_table_ast2500[vbios_mode->enh_table->dclk_index];
else
clk_info = &dclk_table[vbios_mode->enh_table->dclk_index];