Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8b5c7444 authored by Michel Dänzer's avatar Michel Dänzer Committed by Dave Airlie
Browse files

drm/radeon: Fully initialize LVDS info also when we can't get it from the ROM. 



This makes the panel on my PowerBook light up.

Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 4e484e7d

drivers/gpu/drm/radeon/radeon_combios.c

+9 −0
Original line number Diff line number Diff line
@@ -799,6 +799,7 @@ static struct radeon_encoder_lvds *radeon_legacy_get_lvds_info_from_regs(struct 
	struct radeon_encoder_lvds *lvds = NULL;

	uint32_t fp_vert_stretch, fp_horz_stretch;

	uint32_t ppll_div_sel, ppll_val;

	uint32_t lvds_ss_gen_cntl = RREG32(RADEON_LVDS_SS_GEN_CNTL);



	lvds = kzalloc(sizeof(struct radeon_encoder_lvds), GFP_KERNEL);
@@ -808,6 +809,14 @@ static struct radeon_encoder_lvds *radeon_legacy_get_lvds_info_from_regs(struct 
	fp_vert_stretch = RREG32(RADEON_FP_VERT_STRETCH);

	fp_horz_stretch = RREG32(RADEON_FP_HORZ_STRETCH);



	/* These should be fail-safe defaults, fingers crossed */

	lvds->panel_pwr_delay = 200;

	lvds->panel_vcc_delay = 2000;



	lvds->lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL);

	lvds->panel_digon_delay = (lvds_ss_gen_cntl >> RADEON_LVDS_PWRSEQ_DELAY1_SHIFT) & 0xf;

	lvds->panel_blon_delay = (lvds_ss_gen_cntl >> RADEON_LVDS_PWRSEQ_DELAY2_SHIFT) & 0xf;



	if (fp_vert_stretch & RADEON_VERT_STRETCH_ENABLE)

		lvds->native_mode.panel_yres =

		    ((fp_vert_stretch & RADEON_VERT_PANEL_SIZE) >>