diff options
Diffstat (limited to 'src/i830_display.c')
| -rw-r--r-- | src/i830_display.c | 102 |
1 files changed, 91 insertions, 11 deletions
diff --git a/src/i830_display.c b/src/i830_display.c index c280d26e..dd1310fa 100644 --- a/src/i830_display.c +++ b/src/i830_display.c @@ -67,10 +67,13 @@ typedef struct { #define INTEL_P2_NUM 2 -typedef struct { +typedef struct intel_limit intel_limit_t; +struct intel_limit { intel_range_t dot, vco, n, m, m1, m2, p, p1; intel_p2_t p2; -} intel_limit_t; + Bool (* find_pll)(const intel_limit_t *, xf86CrtcPtr, + int, int, intel_clock_t *); +}; #define I8XX_DOT_MIN 25000 #define I8XX_DOT_MAX 350000 @@ -236,6 +239,13 @@ typedef struct { #define G4X_P2_DUAL_LVDS_FAST 7 #define G4X_P2_DUAL_LVDS_LIMIT 0 +static Bool +intel_find_pll_i8xx_and_i9xx(const intel_limit_t *, xf86CrtcPtr, + int, int, intel_clock_t *); +static Bool +intel_find_pll_g4x(const intel_limit_t *, xf86CrtcPtr, + int, int, intel_clock_t *); + static const intel_limit_t intel_limits[] = { { /* INTEL_LIMIT_I8XX_DVO_DAC */ .dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX }, @@ -248,6 +258,7 @@ static const intel_limit_t intel_limits[] = { .p1 = { .min = I8XX_P1_MIN, .max = I8XX_P1_MAX }, .p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT, .p2_slow = I8XX_P2_SLOW, .p2_fast = I8XX_P2_FAST }, + .find_pll = intel_find_pll_i8xx_and_i9xx, }, { /* INTEL_LIMIT_I8XX_LVDS */ .dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX }, @@ -260,6 +271,7 @@ static const intel_limit_t intel_limits[] = { .p1 = { .min = I8XX_P1_LVDS_MIN, .max = I8XX_P1_LVDS_MAX }, .p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT, .p2_slow = I8XX_P2_LVDS_SLOW, .p2_fast = I8XX_P2_LVDS_FAST }, + .find_pll = intel_find_pll_i8xx_and_i9xx, }, { /* INTEL_LIMIT_I9XX_SDVO_DAC */ .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX }, @@ -272,6 +284,7 @@ static const intel_limit_t intel_limits[] = { .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX }, .p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT, .p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST }, + .find_pll = intel_find_pll_i8xx_and_i9xx, }, { /* INTEL_LIMIT_I9XX_LVDS */ .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX }, @@ -287,6 +300,7 @@ static const intel_limit_t intel_limits[] = { */ .p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT, .p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_FAST }, + .find_pll = intel_find_pll_i8xx_and_i9xx, }, { /* INTEL_LIMIT_IGD_SDVO */ .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX}, @@ -299,6 +313,7 @@ static const intel_limit_t intel_limits[] = { .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX }, .p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT, .p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST }, + .find_pll = intel_find_pll_i8xx_and_i9xx, }, { /* INTEL_LIMIT_IGD_LVDS */ .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX }, @@ -312,6 +327,7 @@ static const intel_limit_t intel_limits[] = { /* IGD only supports single-channel mode. */ .p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT, .p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_SLOW }, + .find_pll = intel_find_pll_i8xx_and_i9xx, }, /* below parameter and function is for G4X Chipset Family*/ { /* INTEL_LIMIT_G4X_SDVO */ @@ -326,6 +342,7 @@ static const intel_limit_t intel_limits[] = { .p2 = { .dot_limit = G4X_P2_SDVO_LIMIT, .p2_slow = G4X_P2_SDVO_SLOW, .p2_fast = G4X_P2_SDVO_FAST }, + .find_pll = intel_find_pll_g4x, }, { /* INTEL_LIMIT_G4X_HDMI_DAC */ .dot = { .min = G4X_DOT_HDMI_DAC_MIN, .max = G4X_DOT_HDMI_DAC_MAX }, @@ -339,6 +356,7 @@ static const intel_limit_t intel_limits[] = { .p2 = { .dot_limit = G4X_P2_HDMI_DAC_LIMIT, .p2_slow = G4X_P2_HDMI_DAC_SLOW, .p2_fast = G4X_P2_HDMI_DAC_FAST }, + .find_pll = intel_find_pll_g4x, }, { /* INTEL_LIMIT_G4X_SINGLE_LVDS */ .dot = { .min = G4X_DOT_SINGLE_LVDS_MIN, @@ -360,6 +378,7 @@ static const intel_limit_t intel_limits[] = { .p2 = { .dot_limit = G4X_P2_SINGLE_LVDS_LIMIT, .p2_slow = G4X_P2_SINGLE_LVDS_SLOW, .p2_fast = G4X_P2_SINGLE_LVDS_FAST }, + .find_pll = intel_find_pll_g4x, }, { /* INTEL_LIMIT_G4X_DUAL_LVDS */ .dot = { .min = G4X_DOT_DUAL_LVDS_MIN, @@ -381,6 +400,7 @@ static const intel_limit_t intel_limits[] = { .p2 = { .dot_limit = G4X_P2_DUAL_LVDS_LIMIT, .p2_slow = G4X_P2_DUAL_LVDS_SLOW, .p2_fast = G4X_P2_DUAL_LVDS_FAST }, + .find_pll = intel_find_pll_g4x, }, }; @@ -547,18 +567,13 @@ i830PllIsValid(xf86CrtcPtr crtc, intel_clock_t *clock) return TRUE; } -/** - * Returns a set of divisors for the desired target clock with the given - * refclk, or FALSE. The returned values represent the clock equation: - * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. - */ static Bool -i830FindBestPLL(xf86CrtcPtr crtc, int target, int refclk, intel_clock_t *best_clock) +intel_find_pll_i8xx_and_i9xx(const intel_limit_t * limit, xf86CrtcPtr crtc, + int target, int refclk, intel_clock_t *best_clock) { ScrnInfoPtr pScrn = crtc->scrn; I830Ptr pI830 = I830PTR(pScrn); - intel_clock_t clock; - const intel_limit_t *limit = intel_limit (crtc); + intel_clock_t clock; int err = target; if (i830PipeHasType(crtc, I830_OUTPUT_LVDS)) @@ -610,6 +625,64 @@ i830FindBestPLL(xf86CrtcPtr crtc, int target, int refclk, intel_clock_t *best_cl return (err != target); } +static Bool +intel_find_pll_g4x(const intel_limit_t * limit, xf86CrtcPtr crtc, + int target, int refclk, intel_clock_t *best_clock) +{ + ScrnInfoPtr pScrn = crtc->scrn; + I830Ptr pI830 = I830PTR(pScrn); + intel_clock_t clock; + int max_n; + Bool found = FALSE; + int err_most = target * 0.0048; + + if (i830PipeHasType(crtc, I830_OUTPUT_LVDS)) + { + /* For LVDS, if the panel is on, just rely on its current settings for + * dual-channel. We haven't figured out how to reliably set up + * different single/dual channel state, if we even can. + */ + if ((INREG(LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP) + clock.p2 = limit->p2.p2_fast; + else + clock.p2 = limit->p2.p2_slow; + } else { + if (target < limit->p2.dot_limit) + clock.p2 = limit->p2.p2_slow; + else + clock.p2 = limit->p2.p2_fast; + } + + max_n = limit->n.max; + /* based on hardware requirement prefer smaller n to precision */ + for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) { + /* based on hardware requirement prefere larger m1,m2, p1*/ + for (clock.m1 = limit->m1.max; + clock.m1 >= limit->m1.min; clock.m1--) { + for (clock.m2 = limit->m2.max; + clock.m2 >= limit->m2.min; clock.m2--) { + for (clock.p1 = limit->p1.max; + clock.p1 >= limit->p1.min; clock.p1--) { + int this_err; + + intel_clock (pI830, refclk, &clock); + if (!i830PllIsValid(crtc, &clock)) + continue; + this_err = abs(clock.dot - target) ; + if (this_err < err_most) { + memcpy(best_clock, &clock, sizeof(intel_clock_t)); + err_most = this_err; + /* prefer smaller n to precision */ + max_n = clock.n; + found = TRUE; + } + } + } + } + } + return found; +} + void i830WaitForVblank(ScrnInfoPtr pScreen) { @@ -1513,6 +1586,7 @@ i830_crtc_mode_set(xf86CrtcPtr crtc, DisplayModePtr mode, uint32_t dpll = 0, fp = 0, dspcntr, pipeconf, lvds_bits = 0; Bool ok, is_sdvo = FALSE, is_dvo = FALSE; Bool is_crt = FALSE, is_lvds = FALSE, is_tv = FALSE; + const intel_limit_t *limit; /* Set up some convenient bools for what outputs are connected to * our pipe, used in DPLL setup. @@ -1565,7 +1639,13 @@ i830_crtc_mode_set(xf86CrtcPtr crtc, DisplayModePtr mode, refclk = 48000; } - ok = i830FindBestPLL(crtc, adjusted_mode->Clock, refclk, &clock); + /* + * Returns a set of divisors for the desired target clock with the given + * refclk, or FALSE. The returned values represent the clock equation: + * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. + */ + limit = intel_limit (crtc); + ok = limit->find_pll(limit, crtc, adjusted_mode->Clock, refclk, &clock); if (!ok) FatalError("Couldn't find PLL settings for mode!\n"); |