On Mon, Oct 28, 2019 at 04:49:23PM +0100, Thomas Zimmermann wrote:
> In ast_set_ext_reg() sets several framebuffer options and CRT threshold
> parameters. The former is mostly state of the primary plane; the latter
> is constant. Hence, split the function in two and make it work with
> atomic modesetting.
>
> Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
Acked-by: Gerd Hoffmann <kra...@redhat.com>
> ---
> drivers/gpu/drm/ast/ast_mode.c | 15 ++++++++++-----
> 1 file changed, 10 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
> index b3f82c2d274d..5feb687191e0 100644
> --- a/drivers/gpu/drm/ast/ast_mode.c
> +++ b/drivers/gpu/drm/ast/ast_mode.c
> @@ -419,11 +419,10 @@ static void ast_set_dclk_reg(struct drm_device *dev,
> struct drm_display_mode *mo
> ((clk_info->param3 & 0x3) << 4));
> }
>
> -static void ast_set_ext_reg(struct drm_crtc *crtc, struct drm_display_mode
> *mode,
> - struct ast_vbios_mode_info *vbios_mode)
> +static void ast_set_color_reg(struct drm_crtc *crtc,
> + const struct drm_framebuffer *fb)
> {
> struct ast_private *ast = crtc->dev->dev_private;
> - const struct drm_framebuffer *fb = crtc->primary->fb;
> u8 jregA0 = 0, jregA3 = 0, jregA8 = 0;
>
> switch (fb->format->cpp[0] * 8) {
> @@ -448,6 +447,11 @@ static void ast_set_ext_reg(struct drm_crtc *crtc,
> struct drm_display_mode *mode
> ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa0, 0x8f, jregA0);
> ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xf0, jregA3);
> ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa8, 0xfd, jregA8);
> +}
> +
> +static void ast_set_crtthd_reg(struct drm_crtc *crtc)
> +{
> + struct ast_private *ast = crtc->dev->dev_private;
>
> /* Set Threshold */
> if (ast->chip == AST2300 || ast->chip == AST2400 ||
> @@ -467,7 +471,7 @@ static void ast_set_ext_reg(struct drm_crtc *crtc, struct
> drm_display_mode *mode
> }
>
> static void ast_set_sync_reg(struct drm_device *dev, struct drm_display_mode
> *mode,
> - struct ast_vbios_mode_info *vbios_mode)
> + struct ast_vbios_mode_info *vbios_mode)
> {
> struct ast_private *ast = dev->dev_private;
> u8 jreg;
> @@ -595,7 +599,8 @@ static int ast_crtc_mode_set(struct drm_crtc *crtc,
> ast_set_crtc_reg(crtc, adjusted_mode, &vbios_mode);
> ast_set_offset_reg(crtc);
> ast_set_dclk_reg(dev, adjusted_mode, &vbios_mode);
> - ast_set_ext_reg(crtc, adjusted_mode, &vbios_mode);
> + ast_set_color_reg(crtc, fb);
> + ast_set_crtthd_reg(crtc);
> ast_set_sync_reg(dev, adjusted_mode, &vbios_mode);
> ast_set_dac_reg(crtc, adjusted_mode, &vbios_mode);
>
> --
> 2.23.0
>
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