diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_mode.c | 73 | ||||
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_reg.h | 3 |
2 files changed, 45 insertions, 31 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index f0f8b7258f8c..05f8aa50b908 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -1282,41 +1282,50 @@ static void mgag200_g200ev_set_hiprilvl(struct mga_device *mdev) WREG_ECRT(0x06, 0x00); } -static void mga_crtc_dpms(struct drm_crtc *crtc, int mode) +static void mgag200_enable_display(struct mga_device *mdev) { - struct drm_device *dev = crtc->dev; - struct mga_device *mdev = to_mga_device(dev); - u8 seq1 = 0, crtcext1 = 0; + u8 seq1, crtcext1; - switch (mode) { - case DRM_MODE_DPMS_ON: - seq1 = 0; - crtcext1 = 0; - mga_crtc_load_lut(crtc); - break; - case DRM_MODE_DPMS_STANDBY: - seq1 = 0x20; - crtcext1 = 0x10; - break; - case DRM_MODE_DPMS_SUSPEND: - seq1 = 0x20; - crtcext1 = 0x20; - break; - case DRM_MODE_DPMS_OFF: - seq1 = 0x20; - crtcext1 = 0x30; - break; - } + /* + * TODO: replace busy waiting with vblank IRQ; put + * msleep(50) before changing SCROFF + */ + mga_wait_vsync(mdev); + mga_wait_busy(mdev); + + RREG_SEQ(0x01, seq1); + seq1 &= ~MGAREG_SEQ1_SCROFF; + WREG_SEQ(0x01, seq1); + + msleep(20); + + RREG_ECRT(0x01, crtcext1); + crtcext1 &= ~MGAREG_CRTCEXT1_VSYNCOFF; + crtcext1 &= ~MGAREG_CRTCEXT1_HSYNCOFF; + WREG_ECRT(0x01, crtcext1); +} - WREG8(MGAREG_SEQ_INDEX, 0x01); - seq1 |= RREG8(MGAREG_SEQ_DATA) & ~0x20; +static void mgag200_disable_display(struct mga_device *mdev) +{ + u8 seq1, crtcext1; + + /* + * TODO: replace busy waiting with vblank IRQ; put + * msleep(50) before changing SCROFF + */ mga_wait_vsync(mdev); mga_wait_busy(mdev); - WREG8(MGAREG_SEQ_DATA, seq1); + + RREG_SEQ(0x01, seq1); + seq1 |= MGAREG_SEQ1_SCROFF; + WREG_SEQ(0x01, seq1); + msleep(20); - WREG8(MGAREG_CRTCEXT_INDEX, 0x01); - crtcext1 |= RREG8(MGAREG_CRTCEXT_DATA) & ~0x30; - WREG8(MGAREG_CRTCEXT_DATA, crtcext1); + + RREG_ECRT(0x01, crtcext1); + crtcext1 |= MGAREG_CRTCEXT1_VSYNCOFF | + MGAREG_CRTCEXT1_HSYNCOFF; + WREG_ECRT(0x01, crtcext1); } /* @@ -1349,7 +1358,8 @@ static void mga_crtc_commit(struct drm_crtc *crtc) mga_g200wb_commit(crtc); WREG_SEQ(0, 0x3); - mga_crtc_dpms(crtc, DRM_MODE_DPMS_ON); + mga_crtc_load_lut(crtc); + mgag200_enable_display(mdev); } /* @@ -1595,8 +1605,9 @@ static void mgag200_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe) { struct drm_crtc *crtc = &pipe->crtc; + struct mga_device *mdev = to_mga_device(crtc->dev); - mga_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + mgag200_disable_display(mdev); } static int diff --git a/drivers/gpu/drm/mgag200/mgag200_reg.h b/drivers/gpu/drm/mgag200/mgag200_reg.h index fb5da410804c..9f0be1878854 100644 --- a/drivers/gpu/drm/mgag200/mgag200_reg.h +++ b/drivers/gpu/drm/mgag200/mgag200_reg.h @@ -250,6 +250,9 @@ #define MGAREG_CRTCEXT0_OFFSET_MASK GENMASK(5, 4) +#define MGAREG_CRTCEXT1_VSYNCOFF BIT(5) +#define MGAREG_CRTCEXT1_HSYNCOFF BIT(4) + /* Cursor X and Y position */ #define MGA_CURPOSXL 0x3c0c #define MGA_CURPOSXH 0x3c0d |