diff options
author | Thomas Zimmermann <tzimmermann@suse.de> | 2020-05-15 10:32:26 +0200 |
---|---|---|
committer | Thomas Zimmermann <tzimmermann@suse.de> | 2020-05-19 09:41:33 +0200 |
commit | 836d536881cc8e229dd6d7dfb72a70f5768c57c6 (patch) | |
tree | 8c418f0db04b638296392425e9dc27237ce1115d /drivers | |
parent | 72a03a358c1c3d334e16b940448e3b32137e6597 (diff) | |
download | linux-836d536881cc8e229dd6d7dfb72a70f5768c57c6.tar.bz2 |
drm/mgag200: Set primary plane's format in separate helper function
The primary plane's format registers are now updated in a
mgag200_set_format_regs().
v2:
* get bpp shift from helper function
* replace uint8_t with u8
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: John Donnelly <John.p.donnelly@oracle.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200515083233.32036-9-tzimmermann@suse.de
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_mode.c | 109 |
1 files changed, 69 insertions, 40 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index dee7838d7d36..38556f57ad21 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -1044,6 +1044,68 @@ static void mgag200_set_offset(struct mga_device *mdev, WREG_ECRT(0x00, crtcext0); } +static void mgag200_set_format_regs(struct mga_device *mdev, + const struct drm_framebuffer *fb) +{ + struct drm_device *dev = mdev->dev; + const struct drm_format_info *format = fb->format; + unsigned int bpp, bppshift, scale; + u8 crtcext3, xmulctrl; + + bpp = format->cpp[0] * 8; + + bppshift = mgag200_get_bpp_shift(mdev, format); + switch (bpp) { + case 24: + scale = ((1 << bppshift) * 3) - 1; + break; + default: + scale = (1 << bppshift) - 1; + break; + } + + RREG_ECRT(3, crtcext3); + + switch (bpp) { + case 8: + xmulctrl = MGA1064_MUL_CTL_8bits; + break; + case 16: + if (format->depth == 15) + xmulctrl = MGA1064_MUL_CTL_15bits; + else + xmulctrl = MGA1064_MUL_CTL_16bits; + break; + case 24: + xmulctrl = MGA1064_MUL_CTL_24bits; + break; + case 32: + xmulctrl = MGA1064_MUL_CTL_32_24bits; + break; + default: + /* BUG: We should have caught this problem already. */ + drm_WARN_ON(dev, "invalid format depth\n"); + return; + } + + crtcext3 &= ~GENMASK(2, 0); + crtcext3 |= scale; + + WREG_DAC(MGA1064_MUL_CTL, xmulctrl); + + WREG_GFX(0, 0x00); + WREG_GFX(1, 0x00); + WREG_GFX(2, 0x00); + WREG_GFX(3, 0x00); + WREG_GFX(4, 0x00); + WREG_GFX(5, 0x40); + WREG_GFX(6, 0x05); + WREG_GFX(7, 0x0f); + WREG_GFX(8, 0x0f); + + WREG_ECRT(3, crtcext3); +} + static int mga_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode, @@ -1055,8 +1117,7 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, int option = 0, option2 = 0; int i; unsigned char misc = 0; - unsigned char ext_vga[6]; - u8 bppshift; + u8 crtcext3, crtcext4; static unsigned char dacvalue[] = { /* 0x00: */ 0, 0, 0, 0, 0, 0, 0x00, 0, @@ -1071,8 +1132,6 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, /* 0x48: */ 0, 0, 0, 0, 0, 0, 0, 0 }; - bppshift = mdev->bpp_shifts[fb->format->cpp[0] - 1]; - switch (mdev->type) { case G200_SE_A: case G200_SE_B: @@ -1111,24 +1170,6 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, break; } - switch (fb->format->cpp[0] * 8) { - case 8: - dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_8bits; - break; - case 16: - if (fb->format->depth == 15) - dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_15bits; - else - dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_16bits; - break; - case 24: - dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_24bits; - break; - case 32: - dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_32_24bits; - break; - } - for (i = 0; i < sizeof(dacvalue); i++) { if ((i <= 0x17) || (i == 0x1b) || @@ -1162,16 +1203,6 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, WREG_SEQ(3, 0); WREG_SEQ(4, 0xe); - WREG_GFX(0, 0); - WREG_GFX(1, 0); - WREG_GFX(2, 0); - WREG_GFX(3, 0); - WREG_GFX(4, 0); - WREG_GFX(5, 0x40); - WREG_GFX(6, 0x5); - WREG_GFX(7, 0xf); - WREG_GFX(8, 0xf); - WREG_CRT(10, 0); WREG_CRT(11, 0); WREG_CRT(12, 0); @@ -1179,16 +1210,13 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, WREG_CRT(14, 0); WREG_CRT(15, 0); - /* TODO interlace */ + RREG_ECRT(0x03, crtcext3); - if (fb->format->cpp[0] * 8 == 24) - ext_vga[3] = (((1 << bppshift) * 3) - 1) | 0x80; - else - ext_vga[3] = ((1 << bppshift) - 1) | 0x80; - ext_vga[4] = 0; + crtcext3 |= BIT(7); /* enable MGA mode */ + crtcext4 = 0x00; - WREG_ECRT(3, ext_vga[3]); - WREG_ECRT(4, ext_vga[4]); + WREG_ECRT(0x03, crtcext3); + WREG_ECRT(0x04, crtcext4); if (mdev->type == G200_ER) WREG_ECRT(0x24, 0x5); @@ -1206,6 +1234,7 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, MGAREG_MISC_HIGH_PG_SEL; WREG8(MGA_MISC_OUT, misc); + mgag200_set_format_regs(mdev, fb); mga_crtc_do_set_base(mdev, fb, old_fb); mgag200_set_offset(mdev, fb); |