Commit 16cdd433 authored by Daniel Drake's avatar Daniel Drake Committed by Paul Mundt

lxfb: Maintain video processor palette through suspend/resume

The Geode X driver uses both of the LX's palettes, one for gamma
correction and one for colormaps.

The kernel driver currently only backs up the one used for colormaps
during suspend/resume. If you mess with gamma settings and do a
suspend/resume, colors go funny.

Fix this by backing up the video proc palette during suspend/resume,
alongside the display controller one which is already handled.
Signed-off-by: default avatarDaniel Drake <dsd@laptop.org>
Acked-by: default avatarAndres Salomon <dilinger@queued.net>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 93c176f3
......@@ -22,6 +22,7 @@
#define DC_HFILT_COUNT 0x100
#define DC_VFILT_COUNT 0x100
#define VP_COEFF_SIZE 0x1000
#define VP_PAL_COUNT 0x100
#define OUTPUT_CRT 0x01
#define OUTPUT_PANEL 0x02
......@@ -48,7 +49,8 @@ struct lxfb_par {
uint64_t vp[VP_REG_COUNT];
uint64_t fp[FP_REG_COUNT];
uint32_t pal[DC_PAL_COUNT];
uint32_t dc_pal[DC_PAL_COUNT];
uint32_t vp_pal[VP_PAL_COUNT];
uint32_t hcoeff[DC_HFILT_COUNT * 2];
uint32_t vcoeff[DC_VFILT_COUNT];
uint32_t vp_coeff[VP_COEFF_SIZE / 4];
......
......@@ -610,10 +610,15 @@ static void lx_save_regs(struct lxfb_par *par)
memcpy(par->vp, par->vp_regs, sizeof(par->vp));
memcpy(par->fp, par->vp_regs + VP_FP_START, sizeof(par->fp));
/* save the palette */
/* save the display controller palette */
write_dc(par, DC_PAL_ADDRESS, 0);
for (i = 0; i < ARRAY_SIZE(par->pal); i++)
par->pal[i] = read_dc(par, DC_PAL_DATA);
for (i = 0; i < ARRAY_SIZE(par->dc_pal); i++)
par->dc_pal[i] = read_dc(par, DC_PAL_DATA);
/* save the video processor palette */
write_vp(par, VP_PAR, 0);
for (i = 0; i < ARRAY_SIZE(par->vp_pal); i++)
par->vp_pal[i] = read_vp(par, VP_PDR);
/* save the horizontal filter coefficients */
filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
......@@ -706,8 +711,8 @@ static void lx_restore_display_ctlr(struct lxfb_par *par)
/* restore the palette */
write_dc(par, DC_PAL_ADDRESS, 0);
for (i = 0; i < ARRAY_SIZE(par->pal); i++)
write_dc(par, DC_PAL_DATA, par->pal[i]);
for (i = 0; i < ARRAY_SIZE(par->dc_pal); i++)
write_dc(par, DC_PAL_DATA, par->dc_pal[i]);
/* restore the horizontal filter coefficients */
filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
......@@ -751,6 +756,11 @@ static void lx_restore_video_proc(struct lxfb_par *par)
}
}
/* restore video processor palette */
write_vp(par, VP_PAR, 0);
for (i = 0; i < ARRAY_SIZE(par->vp_pal); i++)
write_vp(par, VP_PDR, par->vp_pal[i]);
/* restore video coeff ram */
memcpy(par->vp_regs + VP_VCR, par->vp_coeff, sizeof(par->vp_coeff));
}
......
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