The fields in struct mgag200_pll_values currently hold the bits of
each register. Store the PLL values instead and let the PLL-update
code figure out the bits for each register.
Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_mode.c | 153 +++++++++++++++----------
1 file changed, 91 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c
b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 9f6fe7673674..7d6707bd6c27 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -123,7 +123,7 @@ static int mgag200_compute_pixpll_values_g200(struct
mga_device *mdev, long cloc
const int in_div_max = 6;
const int feed_div_min = 7;
const int feed_div_max = 127;
- u8 testm, testn;
+ u8 testp, testm, testn;
u8 n = 0, m = 0, p, s;
long f_vco;
long computed;
@@ -141,10 +141,11 @@ static int mgag200_compute_pixpll_values_g200(struct
mga_device *mdev, long cloc
clock = p_clk_min >> 3;
f_vco = clock;
- for (p = 0;
- p <= post_div_max && f_vco < p_clk_min;
- p = (p << 1) + 1, f_vco <<= 1)
+ for (testp = 0;
+ testp <= post_div_max && f_vco < p_clk_min;
+ testp = (testp << 1) + 1, f_vco <<= 1)
;
+ p = testp + 1;
delta = clock;
@@ -157,12 +158,12 @@ static int mgag200_compute_pixpll_values_g200(struct
mga_device *mdev, long cloc
tmp_delta = computed - f_vco;
if (tmp_delta < delta) {
delta = tmp_delta;
- m = testm;
- n = testn;
+ m = testm + 1;
+ n = testn + 1;
}
}
}
- f_vco = ref_clk * (n + 1) / (m + 1);
+ f_vco = ref_clk * n / m;
if (f_vco < 100000)
s = 0;
else if (f_vco < 140000)
@@ -186,6 +187,7 @@ static int mgag200_compute_pixpll_values_g200(struct
mga_device *mdev, long cloc
static void mgag200_set_pixpll_g200(struct mga_device *mdev,
const struct mgag200_pll_values *pixpllc)
{
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
u8 misc, xpixpllcm, xpixpllcn, xpixpllcp;
misc = RREG8(MGA_MISC_IN);
@@ -193,9 +195,14 @@ static void mgag200_set_pixpll_g200(struct mga_device
*mdev,
misc |= MGAREG_MISC_CLK_SEL_MGA_MSK;
WREG8(MGA_MISC_OUT, misc);
- xpixpllcm = pixpllc->m;
- xpixpllcn = pixpllc->n;
- xpixpllcp = pixpllc->p | (pixpllc->s << 3);
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
@@ -240,9 +247,9 @@ static int mgag200_compute_pixpll_values_g200se(struct
mga_device *mdev, long cl
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
- m = testm - 1;
- n = testn - 1;
- p = testp - 1;
+ m = testm;
+ n = testn;
+ p = testp;
}
}
}
@@ -280,22 +287,19 @@ static int mgag200_compute_pixpll_values_g200se(struct
mga_device *mdev, long cl
if (tmpdelta < delta) {
delta = tmpdelta;
- m = testm - 1;
- n = testn - 1;
- p = testp - 1;
+ m = testm;
+ n = testn;
+ p = testp;
}
}
}
}
- fvv = pllreffreq * (n + 1) / (m + 1);
+ fvv = pllreffreq * n / m;
fvv = (fvv - 800000) / 50000;
-
if (fvv > 15)
fvv = 15;
-
- p |= (fvv << 4);
- m |= 0x80;
+ s = fvv << 1;
clock = clock / 2;
}
@@ -317,6 +321,7 @@ static void mgag200_set_pixpll_g200se(struct mga_device
*mdev,
const struct mgag200_pll_values *pixpllc)
{
u32 unique_rev_id = mdev->model.g200se.unique_rev_id;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
u8 misc, xpixpllcm, xpixpllcn, xpixpllcp;
misc = RREG8(MGA_MISC_IN);
@@ -324,9 +329,14 @@ static void mgag200_set_pixpll_g200se(struct mga_device
*mdev,
misc |= MGAREG_MISC_CLK_SEL_MGA_MSK;
WREG8(MGA_MISC_OUT, misc);
- xpixpllcm = pixpllc->m;
- xpixpllcn = pixpllc->n;
- xpixpllcp = pixpllc->p | (pixpllc->s << 3);
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm | ((pixpllcn & BIT(8)) >> 1);
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
@@ -352,7 +362,6 @@ static int mgag200_compute_pixpll_values_g200wb(struct
mga_device *mdev, long cl
delta = 0xffffffff;
if (mdev->type == G200_EW3) {
-
vcomax = 800000;
vcomin = 400000;
pllreffreq = 25000;
@@ -375,19 +384,16 @@ static int mgag200_compute_pixpll_values_g200wb(struct
mga_device *mdev, long cl
tmpdelta = clock -
computed;
if (tmpdelta < delta) {
delta = tmpdelta;
- m = ((testn & 0x100) >>
1) |
- (testm);
- n = (testn & 0xFF);
- p = ((testn & 0x600) >>
3) |
- (testp2 << 3) |
- (testp);
+ m = testm + 1;
+ n = testn + 1;
+ p = testp + 1;
+ s = testp2;
}
}
}
}
}
} else {
-
vcomax = 550000;
vcomin = 150000;
pllreffreq = 48000;
@@ -408,10 +414,10 @@ static int mgag200_compute_pixpll_values_g200wb(struct
mga_device *mdev, long cl
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
- n = testn - 1;
- m = (testm - 1) |
- ((n >> 1) & 0x80);
- p = testp - 1;
+ n = testn;
+ m = testm;
+ p = testp;
+ s = 0;
}
}
}
@@ -429,6 +435,7 @@ static int mgag200_compute_pixpll_values_g200wb(struct
mga_device *mdev, long cl
static void mgag200_set_pixpll_g200wb(struct mga_device *mdev,
const struct mgag200_pll_values *pixpllc)
{
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
u8 misc, xpixpllcm, xpixpllcn, xpixpllcp, tmp;
int i, j, tmpcount, vcount;
bool pll_locked = false;
@@ -438,9 +445,14 @@ static void mgag200_set_pixpll_g200wb(struct mga_device
*mdev,
misc |= MGAREG_MISC_CLK_SEL_MGA_MSK;
WREG8(MGA_MISC_OUT, misc);
- xpixpllcm = pixpllc->m;
- xpixpllcn = pixpllc->n;
- xpixpllcp = pixpllc->p | (pixpllc->s << 3);
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = ((pixpllcn & BIT(8)) >> 1) | pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = ((pixpllcn & GENMASK(10, 9)) >> 3) | (pixpllcs << 3) |
pixpllcp;
for (i = 0; i <= 32 && pll_locked == false; i++) {
if (i > 0) {
@@ -571,9 +583,9 @@ static int mgag200_compute_pixpll_values_g200ev(struct
mga_device *mdev, long cl
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
- n = testn - 1;
- m = testm - 1;
- p = testp - 1;
+ n = testn;
+ m = testm;
+ p = testp;
}
}
}
@@ -590,6 +602,7 @@ static int mgag200_compute_pixpll_values_g200ev(struct
mga_device *mdev, long cl
static void mgag200_set_pixpll_g200ev(struct mga_device *mdev,
const struct mgag200_pll_values *pixpllc)
{
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
u8 misc, xpixpllcm, xpixpllcn, xpixpllcp, tmp;
misc = RREG8(MGA_MISC_IN);
@@ -597,9 +610,14 @@ static void mgag200_set_pixpll_g200ev(struct mga_device
*mdev,
misc |= MGAREG_MISC_CLK_SEL_MGA_MSK;
WREG8(MGA_MISC_OUT, misc);
- xpixpllcm = pixpllc->m;
- xpixpllcn = pixpllc->n;
- xpixpllcp = pixpllc->p | (pixpllc->s << 3);
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
@@ -685,9 +703,9 @@ static int mgag200_compute_pixpll_values_g200eh(struct
mga_device *mdev, long cl
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
- n = testn;
- m = testm;
- p = testp;
+ n = testn + 1;
+ m = testm + 1;
+ p = testp + 1;
}
if (delta == 0)
break;
@@ -719,12 +737,10 @@ static int mgag200_compute_pixpll_values_g200eh(struct
mga_device *mdev, long cl
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
- n = testn - 1;
- m = (testm - 1);
- p = testp - 1;
+ n = testn;
+ m = testm;
+ p = testp;
}
- if ((clock * testp) >= 600000)
- p |= 0x80;
}
}
}
@@ -741,6 +757,7 @@ static int mgag200_compute_pixpll_values_g200eh(struct
mga_device *mdev, long cl
static void mgag200_set_pixpll_g200eh(struct mga_device *mdev,
const struct mgag200_pll_values *pixpllc)
{
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
u8 misc, xpixpllcm, xpixpllcn, xpixpllcp, tmp;
int i, j, tmpcount, vcount;
bool pll_locked = false;
@@ -750,9 +767,14 @@ static void mgag200_set_pixpll_g200eh(struct mga_device
*mdev,
misc |= MGAREG_MISC_CLK_SEL_MGA_MSK;
WREG8(MGA_MISC_OUT, misc);
- xpixpllcm = pixpllc->m;
- xpixpllcn = pixpllc->n;
- xpixpllcp = pixpllc->p | (pixpllc->s << 3);
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = ((pixpllcn & BIT(8)) >> 1) | pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
for (i = 0; i <= 32 && pll_locked == false; i++) {
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
@@ -843,9 +865,10 @@ static int mgag200_compute_pixpll_values_g200er(struct
mga_device *mdev, long cl
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
- m = testm | (testo << 3);
- n = testn;
- p = testr | (testr << 3);
+ m = (testm | (testo << 3)) + 1;
+ n = testn + 1;
+ p = testr + 1;
+ s = testr;
}
}
}
@@ -863,6 +886,7 @@ static int mgag200_compute_pixpll_values_g200er(struct
mga_device *mdev, long cl
static void mgag200_set_pixpll_g200er(struct mga_device *mdev,
const struct mgag200_pll_values *pixpllc)
{
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
u8 misc, xpixpllcm, xpixpllcn, xpixpllcp, tmp;
misc = RREG8(MGA_MISC_IN);
@@ -870,9 +894,14 @@ static void mgag200_set_pixpll_g200er(struct mga_device
*mdev,
misc |= MGAREG_MISC_CLK_SEL_MGA_MSK;
WREG8(MGA_MISC_OUT, misc);
- xpixpllcm = pixpllc->m;
- xpixpllcn = pixpllc->n;
- xpixpllcp = pixpllc->p | (pixpllc->s << 3);
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
--
2.32.0
