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-rw-r--r--src/atombios_crtc.c11
-rw-r--r--src/legacy_crtc.c4
-rw-r--r--src/radeon.h11
-rw-r--r--src/radeon_crtc.c227
4 files changed, 170 insertions, 83 deletions
diff --git a/src/atombios_crtc.c b/src/atombios_crtc.c
index 07fa8075..1d86643b 100644
--- a/src/atombios_crtc.c
+++ b/src/atombios_crtc.c
@@ -437,7 +437,8 @@ static void
atombios_crtc_set_pll(xf86CrtcPtr crtc, DisplayModePtr mode)
{
RADEONCrtcPrivatePtr radeon_crtc = crtc->driver_private;
- RADEONInfoPtr info = RADEONPTR(crtc->scrn);
+ ScrnInfoPtr pScrn = crtc->scrn;
+ RADEONInfoPtr info = RADEONPTR(pScrn);
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(crtc->scrn);
unsigned char *RADEONMMIO = info->MMIO;
int index;
@@ -613,13 +614,7 @@ atombios_crtc_set_pll(xf86CrtcPtr crtc, DisplayModePtr mode)
}
}
- if (IS_AVIVO_VARIANT) {
- if (xf86ReturnOptValBool(info->Options, OPTION_NEW_PLL, TRUE))
- RADEONComputePLL_AVIVO(&info->pll, sclock, &temp, &fb_div, &frac_fb_div, &ref_div, &post_div, pll_flags);
- else
- RADEONComputePLL(&info->pll, sclock, &temp, &fb_div, &frac_fb_div, &ref_div, &post_div, pll_flags);
- } else
- RADEONComputePLL(&info->pll, sclock, &temp, &fb_div, &frac_fb_div, &ref_div, &post_div, pll_flags);
+ RADEONComputePLL(pScrn, &info->pll, sclock, &temp, &fb_div, &frac_fb_div, &ref_div, &post_div, pll_flags);
sclock = temp; /* 10 khz */
xf86DrvMsg(crtc->scrn->scrnIndex, X_INFO,
diff --git a/src/legacy_crtc.c b/src/legacy_crtc.c
index 0ad762b7..e4c1f043 100644
--- a/src/legacy_crtc.c
+++ b/src/legacy_crtc.c
@@ -1223,7 +1223,7 @@ RADEONInitPLLRegisters(ScrnInfoPtr pScrn, RADEONSavePtr save,
return;
}
- RADEONComputePLL(pll, mode->Clock, &freq, &feedback_div, &frac_fb_div, &reference_div, &post_divider, flags);
+ RADEONComputePLL(pScrn, pll, mode->Clock, &freq, &feedback_div, &frac_fb_div, &reference_div, &post_divider, flags);
for (post_div = &post_divs[0]; post_div->divider; ++post_div) {
if (post_div->divider == post_divider)
@@ -1303,7 +1303,7 @@ RADEONInitPLL2Registers(ScrnInfoPtr pScrn, RADEONSavePtr save,
return;
}
- RADEONComputePLL(pll, mode->Clock, &freq, &feedback_div, &frac_fb_div, &reference_div, &post_divider, flags);
+ RADEONComputePLL(pScrn, pll, mode->Clock, &freq, &feedback_div, &frac_fb_div, &reference_div, &post_divider, flags);
for (post_div = &post_divs[0]; post_div->divider; ++post_div) {
if (post_div->divider == post_divider)
diff --git a/src/radeon.h b/src/radeon.h
index 36b2d8be..c0b5d7aa 100644
--- a/src/radeon.h
+++ b/src/radeon.h
@@ -1173,20 +1173,13 @@ extern void radeon_crtc_load_lut(xf86CrtcPtr crtc);
extern void radeon_crtc_modeset_ioctl(xf86CrtcPtr crtc, Bool post);
extern Bool RADEONAllocateControllers(ScrnInfoPtr pScrn, int mask);
extern void RADEONBlank(ScrnInfoPtr pScrn);
-extern void RADEONComputePLL(RADEONPLLPtr pll, unsigned long freq,
+extern void RADEONComputePLL(ScrnInfoPtr pScrn,
+ RADEONPLLPtr pll, unsigned long freq,
uint32_t *chosen_dot_clock_freq,
uint32_t *chosen_feedback_div,
uint32_t *chosen_frac_feedback_div,
uint32_t *chosen_reference_div,
uint32_t *chosen_post_div, int flags);
-extern void RADEONComputePLL_AVIVO(RADEONPLLPtr pll,
- unsigned long freq,
- uint32_t *chosen_dot_clock_freq,
- uint32_t *chosen_feedback_div,
- uint32_t *chosen_frac_feedback_div,
- uint32_t *chosen_reference_div,
- uint32_t *chosen_post_div,
- int flags);
extern DisplayModePtr RADEONCrtcFindClosestMode(xf86CrtcPtr crtc,
DisplayModePtr pMode);
extern void RADEONUnblank(ScrnInfoPtr pScrn);
diff --git a/src/radeon_crtc.c b/src/radeon_crtc.c
index 764839c0..5deff8dc 100644
--- a/src/radeon_crtc.c
+++ b/src/radeon_crtc.c
@@ -132,15 +132,15 @@ static uint32_t RADEONDiv(CARD64 n, uint32_t d)
return (n + (d / 2)) / d;
}
-void
-RADEONComputePLL(RADEONPLLPtr pll,
- unsigned long freq,
- uint32_t *chosen_dot_clock_freq,
- uint32_t *chosen_feedback_div,
- uint32_t *chosen_frac_feedback_div,
- uint32_t *chosen_reference_div,
- uint32_t *chosen_post_div,
- int flags)
+static void
+RADEONComputePLL_old(RADEONPLLPtr pll,
+ unsigned long freq,
+ uint32_t *chosen_dot_clock_freq,
+ uint32_t *chosen_feedback_div,
+ uint32_t *chosen_frac_feedback_div,
+ uint32_t *chosen_reference_div,
+ uint32_t *chosen_post_div,
+ int flags)
{
uint32_t min_ref_div = pll->min_ref_div;
uint32_t max_ref_div = pll->max_ref_div;
@@ -306,79 +306,178 @@ RADEONComputePLL(RADEONPLLPtr pll,
}
-void
-RADEONComputePLL_AVIVO(RADEONPLLPtr pll,
- unsigned long freq,
- uint32_t *chosen_dot_clock_freq,
- uint32_t *chosen_feedback_div,
- uint32_t *chosen_frac_feedback_div,
- uint32_t *chosen_reference_div,
- uint32_t *chosen_post_div,
- int flags)
+static Bool
+calc_fb_div(RADEONPLLPtr pll,
+ unsigned long freq,
+ int flags,
+ int post_div,
+ int ref_div,
+ int *fb_div,
+ int *fb_div_frac)
{
- float m, n, frac_n, p, f_vco, f_pclk, best_freq;
- float pll_out_max = pll->pll_out_max;
- float pll_out_min = pll->pll_out_min;
- float reference_freq = pll->reference_freq;
- float pll_in_max = pll->pll_in_max;
- float pll_in_min = pll->pll_in_min;
float ffreq = freq / 10;
- float error = 100;
-
- ErrorF("ffreq: %f\n", ffreq * 10);
+ float vco_freq = ffreq * post_div;
+ float feedback_divider = vco_freq * ref_div / pll->reference_freq;
- /* 1 - max p */
- p = floor(pll_out_max / ffreq);
+ if (flags & RADEON_PLL_USE_FRAC_FB_DIV) {
+ feedback_divider = floor((feedback_divider * 10.0) + 0.5) * 0.1;
- /* 2 - min m */
- m = ceil(reference_freq / pll_in_max);
+ *fb_div = floor(feedback_divider);
+ *fb_div_frac = fmod(feedback_divider, 1.0) * 10.0;
- while (error > 0.25) {
- /* 3 - n */
- n = (ffreq / reference_freq) * m * p;
+ } else {
+ *fb_div = floor(feedback_divider + 0.5);
+ *fb_div_frac = 0;
+ }
+ if ((*fb_div < pll->min_feedback_div) || (*fb_div > pll->max_feedback_div))
+ return FALSE;
+ else
+ return TRUE;
+}
- /* 4 - vco out freq */
- f_vco = (n / m) * reference_freq;
+static Bool
+calc_fb_ref_div(RADEONPLLPtr pll,
+ unsigned long freq,
+ int flags,
+ int post_div,
+ int *fb_div,
+ int *fb_div_frac,
+ int *ref_div)
+{
+ float ffreq = freq / 10;
+ float max_error = ffreq * 0.0025;
+ float vco, error, pll_out;
- /* 5 - pclk freq */
- f_pclk = f_vco / p;
+ for ((*ref_div) = pll->min_ref_div; (*ref_div) < pll->max_ref_div; ++(*ref_div)) {
+ if (calc_fb_div(pll, freq, flags, post_div, (*ref_div), fb_div, fb_div_frac)) {
+ vco = pll->reference_freq * ((*fb_div) + ((*fb_div_frac) * 0.1)) / (*ref_div);
- /* 6 - error */
- error = (abs(f_pclk - ffreq) / f_pclk) * 100;
+ if ((vco < pll->pll_out_min) || (vco > pll->pll_out_max))
+ continue;
- best_freq = reference_freq * (n / (m * p));
+ pll_out = vco / post_div;
- /* min error 0.25% */
- if (error < 0.25)
- break;
+ error = pll_out - ffreq;
+ if ((fabs(error) <= max_error) && (error >= 0))
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
- /* 7 - check m */
- m++;
- if ((reference_freq / m) >= pll_in_min)
- continue;
+static void
+RADEONComputePLL_new(RADEONPLLPtr pll,
+ unsigned long freq,
+ uint32_t *chosen_dot_clock_freq,
+ uint32_t *chosen_feedback_div,
+ uint32_t *chosen_frac_feedback_div,
+ uint32_t *chosen_reference_div,
+ uint32_t *chosen_post_div,
+ int flags)
+{
+ float ffreq = freq / 10;
+ float vco_frequency;
+ int fb_div = 0, fb_div_frac = 0, post_div = 0, ref_div = 0;
+ uint32_t best_freq = 0;
+
+ if (flags & RADEON_PLL_USE_POST_DIV) {
+ post_div = pll->post_div;
+ if ((post_div < pll->min_post_div) || (post_div > pll->max_post_div))
+ goto done;
+ vco_frequency = ffreq * post_div;
+ if ((vco_frequency < pll->pll_out_min) || (vco_frequency > pll->pll_out_max))
+ goto done;
+
+ if (flags & RADEON_PLL_USE_REF_DIV) {
+ ref_div = pll->reference_div;
+ if ((ref_div < pll->min_ref_div) || (ref_div > pll->max_ref_div))
+ goto done;
+ if (!calc_fb_div(pll, freq, flags, post_div, ref_div, &fb_div, &fb_div_frac))
+ goto done;
+ }
+ } else {
+ for (post_div = pll->max_post_div; post_div >= pll->min_post_div; --post_div) {
+ if (flags & RADEON_PLL_LEGACY) {
+ if ((post_div == 5) ||
+ (post_div == 7) ||
+ (post_div == 9) ||
+ (post_div == 10) ||
+ (post_div == 11))
+ continue;
+ }
+ if ((flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
+ continue;
- /* 8 - check p */
- m = ceil(reference_freq / pll_in_max);
- p--;
- if ((p * ffreq) >= pll_out_min)
- continue;
- else
- FatalError("Couldn't find valid PLL dividers\n");
+ vco_frequency = ffreq * post_div;
+ if ((vco_frequency < pll->pll_out_min) || (vco_frequency > pll->pll_out_max))
+ continue;
+ if (flags & RADEON_PLL_USE_REF_DIV) {
+ ref_div = pll->reference_div;
+ if ((ref_div < pll->min_ref_div) || (ref_div > pll->max_ref_div))
+ goto done;
+ if (calc_fb_div(pll, freq, flags, post_div, ref_div, &fb_div, &fb_div_frac))
+ break;
+ } else {
+ if (calc_fb_ref_div(pll, freq, flags, post_div, &fb_div, &fb_div_frac, &ref_div))
+ break;
+ }
+ }
}
- frac_n = (n - (int)n) * 10;
+ best_freq = pll->reference_freq * 10 * fb_div;
+ best_freq += pll->reference_freq * fb_div_frac;
+ best_freq = best_freq / (ref_div * post_div);
+
+ ErrorF("best_freq: %u\n", (unsigned int)best_freq);
+ ErrorF("best_feedback_div: %u\n", (unsigned int)fb_div);
+ ErrorF("best_frac_feedback_div: %u\n", (unsigned int)fb_div_frac);
+ ErrorF("best_ref_div: %u\n", (unsigned int)ref_div);
+ ErrorF("best_post_div: %u\n", (unsigned int)post_div);
- ErrorF("best_freq: %u\n", (unsigned int)best_freq * 10);
- ErrorF("best_feedback_div: %d.%d\n", (int)n, (int)frac_n);
- ErrorF("best_ref_div: %d\n", (int)m);
- ErrorF("best_post_div: %d\n", (int)p);
+done:
+ if (best_freq == 0)
+ FatalError("Couldn't find valid PLL dividers\n");
*chosen_dot_clock_freq = best_freq;
- *chosen_feedback_div = (uint32_t)n;
- *chosen_frac_feedback_div = (uint32_t)frac_n;
- *chosen_reference_div = (uint32_t)m;
- *chosen_post_div = (uint32_t)p;
+ *chosen_feedback_div = fb_div;
+ *chosen_frac_feedback_div = fb_div_frac;
+ *chosen_reference_div = ref_div;
+ *chosen_post_div = post_div;
+
+}
+
+void
+RADEONComputePLL(ScrnInfoPtr pScrn,
+ RADEONPLLPtr pll,
+ unsigned long freq,
+ uint32_t *chosen_dot_clock_freq,
+ uint32_t *chosen_feedback_div,
+ uint32_t *chosen_frac_feedback_div,
+ uint32_t *chosen_reference_div,
+ uint32_t *chosen_post_div,
+ int flags)
+{
+ RADEONInfoPtr info = RADEONPTR(pScrn);
+ if (IS_AVIVO_VARIANT) {
+ if (xf86ReturnOptValBool(info->Options, OPTION_NEW_PLL, TRUE))
+ RADEONComputePLL_new(pll, freq, chosen_dot_clock_freq,
+ chosen_feedback_div, chosen_frac_feedback_div,
+ chosen_reference_div, chosen_post_div, flags);
+ else
+ RADEONComputePLL_old(pll, freq, chosen_dot_clock_freq,
+ chosen_feedback_div, chosen_frac_feedback_div,
+ chosen_reference_div, chosen_post_div, flags);
+ } else {
+ if (xf86ReturnOptValBool(info->Options, OPTION_NEW_PLL, FALSE))
+ RADEONComputePLL_new(pll, freq, chosen_dot_clock_freq,
+ chosen_feedback_div, chosen_frac_feedback_div,
+ chosen_reference_div, chosen_post_div, flags);
+ else
+ RADEONComputePLL_old(pll, freq, chosen_dot_clock_freq,
+ chosen_feedback_div, chosen_frac_feedback_div,
+ chosen_reference_div, chosen_post_div, flags);
+ }
}
static void
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 08:12:16 +0000