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| author | Daniel Drake <dsd@laptop.org> | 2010-11-30 20:34:52 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-12-01 18:18:56 +0900 |
| commit | 16cdd4336fdca9b50f991b591005b5f6416f82c4 (patch) | |
| tree | 45bde2b1c434851bacd657e8fb2c493e2960c7cb | |
| parent | 93c176f39fedaeff854ccb7681d626d65bdffe52 (diff) | |
| download | linux-16cdd4336fdca9b50f991b591005b5f6416f82c4.tar.gz linux-16cdd4336fdca9b50f991b591005b5f6416f82c4.tar.bz2 linux-16cdd4336fdca9b50f991b591005b5f6416f82c4.zip | |
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: Daniel Drake <dsd@laptop.org>
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | drivers/video/geode/lxfb.h | 4 | ||||
| -rw-r--r-- | drivers/video/geode/lxfb_ops.c | 20 |
2 files changed, 18 insertions, 6 deletions
diff --git a/drivers/video/geode/lxfb.h b/drivers/video/geode/lxfb.h index e4c4d89b7860..be8ccb47ebe0 100644 --- a/drivers/video/geode/lxfb.h +++ b/drivers/video/geode/lxfb.h @@ -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]; diff --git a/drivers/video/geode/lxfb_ops.c b/drivers/video/geode/lxfb_ops.c index 85ec7f64c42a..79e9abc72b83 100644 --- a/drivers/video/geode/lxfb_ops.c +++ b/drivers/video/geode/lxfb_ops.c @@ -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)); } |