leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/mgag200: Set primary plane's format in separate helper function

Browse Source 
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
This commit is contained in:
Thomas Zimmermann 2020-05-15 10:32:26 +02:00
parent 72a03a358c
commit 836d536881
1 changed files with 69 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

109
drivers/gpu/drm/mgag200/mgag200_mode.c
View File

@ -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);