diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/clock')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c | 274 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c | 45 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c | 37 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c | 36 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/pll.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/pllnv04.c | 17 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/clock/pllnva3.c | 18 |
8 files changed, 31 insertions, 401 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c index b7fd1151166e..a14277586595 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c @@ -22,9 +22,10 @@ * Authors: Ben Skeggs */ -#include <subdev/clock.h> #include <subdev/bios.h> #include <subdev/bios/pll.h> +#include <subdev/clock.h> +#include <subdev/devinit/priv.h> #include "pll.h" @@ -32,272 +33,12 @@ struct nv04_clock_priv { struct nouveau_clock base; }; -static int -powerctrl_1_shift(int chip_version, int reg) -{ - int shift = -4; - - if (chip_version < 0x17 || chip_version == 0x1a || chip_version == 0x20) - return shift; - - switch (reg) { - case 0x680520: - shift += 4; - case 0x680508: - shift += 4; - case 0x680504: - shift += 4; - case 0x680500: - shift += 4; - } - - /* - * the shift for vpll regs is only used for nv3x chips with a single - * stage pll - */ - if (shift > 4 && (chip_version < 0x32 || chip_version == 0x35 || - chip_version == 0x36 || chip_version >= 0x40)) - shift = -4; - - return shift; -} - -static void -setPLL_single(struct nv04_clock_priv *priv, u32 reg, - struct nouveau_pll_vals *pv) -{ - int chip_version = nouveau_bios(priv)->version.chip; - uint32_t oldpll = nv_rd32(priv, reg); - int oldN = (oldpll >> 8) & 0xff, oldM = oldpll & 0xff; - uint32_t pll = (oldpll & 0xfff80000) | pv->log2P << 16 | pv->NM1; - uint32_t saved_powerctrl_1 = 0; - int shift_powerctrl_1 = powerctrl_1_shift(chip_version, reg); - - if (oldpll == pll) - return; /* already set */ - - if (shift_powerctrl_1 >= 0) { - saved_powerctrl_1 = nv_rd32(priv, 0x001584); - nv_wr32(priv, 0x001584, - (saved_powerctrl_1 & ~(0xf << shift_powerctrl_1)) | - 1 << shift_powerctrl_1); - } - - if (oldM && pv->M1 && (oldN / oldM < pv->N1 / pv->M1)) - /* upclock -- write new post divider first */ - nv_wr32(priv, reg, pv->log2P << 16 | (oldpll & 0xffff)); - else - /* downclock -- write new NM first */ - nv_wr32(priv, reg, (oldpll & 0xffff0000) | pv->NM1); - - if (chip_version < 0x17 && chip_version != 0x11) - /* wait a bit on older chips */ - msleep(64); - nv_rd32(priv, reg); - - /* then write the other half as well */ - nv_wr32(priv, reg, pll); - - if (shift_powerctrl_1 >= 0) - nv_wr32(priv, 0x001584, saved_powerctrl_1); -} - -static uint32_t -new_ramdac580(uint32_t reg1, bool ss, uint32_t ramdac580) -{ - bool head_a = (reg1 == 0x680508); - - if (ss) /* single stage pll mode */ - ramdac580 |= head_a ? 0x00000100 : 0x10000000; - else - ramdac580 &= head_a ? 0xfffffeff : 0xefffffff; - - return ramdac580; -} - -static void -setPLL_double_highregs(struct nv04_clock_priv *priv, u32 reg1, - struct nouveau_pll_vals *pv) -{ - int chip_version = nouveau_bios(priv)->version.chip; - bool nv3035 = chip_version == 0x30 || chip_version == 0x35; - uint32_t reg2 = reg1 + ((reg1 == 0x680520) ? 0x5c : 0x70); - uint32_t oldpll1 = nv_rd32(priv, reg1); - uint32_t oldpll2 = !nv3035 ? nv_rd32(priv, reg2) : 0; - uint32_t pll1 = (oldpll1 & 0xfff80000) | pv->log2P << 16 | pv->NM1; - uint32_t pll2 = (oldpll2 & 0x7fff0000) | 1 << 31 | pv->NM2; - uint32_t oldramdac580 = 0, ramdac580 = 0; - bool single_stage = !pv->NM2 || pv->N2 == pv->M2; /* nv41+ only */ - uint32_t saved_powerctrl_1 = 0, savedc040 = 0; - int shift_powerctrl_1 = powerctrl_1_shift(chip_version, reg1); - - /* model specific additions to generic pll1 and pll2 set up above */ - if (nv3035) { - pll1 = (pll1 & 0xfcc7ffff) | (pv->N2 & 0x18) << 21 | - (pv->N2 & 0x7) << 19 | 8 << 4 | (pv->M2 & 7) << 4; - pll2 = 0; - } - if (chip_version > 0x40 && reg1 >= 0x680508) { /* !nv40 */ - oldramdac580 = nv_rd32(priv, 0x680580); - ramdac580 = new_ramdac580(reg1, single_stage, oldramdac580); - if (oldramdac580 != ramdac580) - oldpll1 = ~0; /* force mismatch */ - if (single_stage) - /* magic value used by nvidia in single stage mode */ - pll2 |= 0x011f; - } - if (chip_version > 0x70) - /* magic bits set by the blob (but not the bios) on g71-73 */ - pll1 = (pll1 & 0x7fffffff) | (single_stage ? 0x4 : 0xc) << 28; - - if (oldpll1 == pll1 && oldpll2 == pll2) - return; /* already set */ - - if (shift_powerctrl_1 >= 0) { - saved_powerctrl_1 = nv_rd32(priv, 0x001584); - nv_wr32(priv, 0x001584, - (saved_powerctrl_1 & ~(0xf << shift_powerctrl_1)) | - 1 << shift_powerctrl_1); - } - - if (chip_version >= 0x40) { - int shift_c040 = 14; - - switch (reg1) { - case 0x680504: - shift_c040 += 2; - case 0x680500: - shift_c040 += 2; - case 0x680520: - shift_c040 += 2; - case 0x680508: - shift_c040 += 2; - } - - savedc040 = nv_rd32(priv, 0xc040); - if (shift_c040 != 14) - nv_wr32(priv, 0xc040, savedc040 & ~(3 << shift_c040)); - } - - if (oldramdac580 != ramdac580) - nv_wr32(priv, 0x680580, ramdac580); - - if (!nv3035) - nv_wr32(priv, reg2, pll2); - nv_wr32(priv, reg1, pll1); - - if (shift_powerctrl_1 >= 0) - nv_wr32(priv, 0x001584, saved_powerctrl_1); - if (chip_version >= 0x40) - nv_wr32(priv, 0xc040, savedc040); -} - -static void -setPLL_double_lowregs(struct nv04_clock_priv *priv, u32 NMNMreg, - struct nouveau_pll_vals *pv) -{ - /* When setting PLLs, there is a merry game of disabling and enabling - * various bits of hardware during the process. This function is a - * synthesis of six nv4x traces, nearly each card doing a subtly - * different thing. With luck all the necessary bits for each card are - * combined herein. Without luck it deviates from each card's formula - * so as to not work on any :) - */ - - uint32_t Preg = NMNMreg - 4; - bool mpll = Preg == 0x4020; - uint32_t oldPval = nv_rd32(priv, Preg); - uint32_t NMNM = pv->NM2 << 16 | pv->NM1; - uint32_t Pval = (oldPval & (mpll ? ~(0x77 << 16) : ~(7 << 16))) | - 0xc << 28 | pv->log2P << 16; - uint32_t saved4600 = 0; - /* some cards have different maskc040s */ - uint32_t maskc040 = ~(3 << 14), savedc040; - bool single_stage = !pv->NM2 || pv->N2 == pv->M2; - - if (nv_rd32(priv, NMNMreg) == NMNM && (oldPval & 0xc0070000) == Pval) - return; - - if (Preg == 0x4000) - maskc040 = ~0x333; - if (Preg == 0x4058) - maskc040 = ~(0xc << 24); - - if (mpll) { - struct nvbios_pll info; - uint8_t Pval2; - - if (nvbios_pll_parse(nouveau_bios(priv), Preg, &info)) - return; - - Pval2 = pv->log2P + info.bias_p; - if (Pval2 > info.max_p) - Pval2 = info.max_p; - Pval |= 1 << 28 | Pval2 << 20; - - saved4600 = nv_rd32(priv, 0x4600); - nv_wr32(priv, 0x4600, saved4600 | 8 << 28); - } - if (single_stage) - Pval |= mpll ? 1 << 12 : 1 << 8; - - nv_wr32(priv, Preg, oldPval | 1 << 28); - nv_wr32(priv, Preg, Pval & ~(4 << 28)); - if (mpll) { - Pval |= 8 << 20; - nv_wr32(priv, 0x4020, Pval & ~(0xc << 28)); - nv_wr32(priv, 0x4038, Pval & ~(0xc << 28)); - } - - savedc040 = nv_rd32(priv, 0xc040); - nv_wr32(priv, 0xc040, savedc040 & maskc040); - - nv_wr32(priv, NMNMreg, NMNM); - if (NMNMreg == 0x4024) - nv_wr32(priv, 0x403c, NMNM); - - nv_wr32(priv, Preg, Pval); - if (mpll) { - Pval &= ~(8 << 20); - nv_wr32(priv, 0x4020, Pval); - nv_wr32(priv, 0x4038, Pval); - nv_wr32(priv, 0x4600, saved4600); - } - - nv_wr32(priv, 0xc040, savedc040); - - if (mpll) { - nv_wr32(priv, 0x4020, Pval & ~(1 << 28)); - nv_wr32(priv, 0x4038, Pval & ~(1 << 28)); - } -} - -int -nv04_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq) -{ - struct nv04_clock_priv *priv = (void *)clk; - struct nouveau_pll_vals pv; - struct nvbios_pll info; - int ret; - - ret = nvbios_pll_parse(nouveau_bios(priv), type > 0x405c ? - type : type - 4, &info); - if (ret) - return ret; - - ret = clk->pll_calc(clk, &info, freq, &pv); - if (!ret) - return ret; - - return clk->pll_prog(clk, type, &pv); -} - int nv04_clock_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, struct nouveau_pll_vals *pv) { int N1, M1, N2, M2, P; - int ret = nv04_pll_calc(clock, info, clk, &N1, &M1, &N2, &M2, &P); + int ret = nv04_pll_calc(nv_subdev(clock), info, clk, &N1, &M1, &N2, &M2, &P); if (ret) { pv->refclk = info->refclk; pv->N1 = N1; @@ -313,17 +54,17 @@ int nv04_clock_pll_prog(struct nouveau_clock *clk, u32 reg1, struct nouveau_pll_vals *pv) { - struct nv04_clock_priv *priv = (void *)clk; + struct nouveau_devinit *devinit = nouveau_devinit(clk); int cv = nouveau_bios(clk)->version.chip; if (cv == 0x30 || cv == 0x31 || cv == 0x35 || cv == 0x36 || cv >= 0x40) { if (reg1 > 0x405c) - setPLL_double_highregs(priv, reg1, pv); + setPLL_double_highregs(devinit, reg1, pv); else - setPLL_double_lowregs(priv, reg1, pv); + setPLL_double_lowregs(devinit, reg1, pv); } else - setPLL_single(priv, reg1, pv); + setPLL_single(devinit, reg1, pv); return 0; } @@ -341,7 +82,6 @@ nv04_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (ret) return ret; - priv->base.pll_set = nv04_clock_pll_set; priv->base.pll_calc = nv04_clock_pll_calc; priv->base.pll_prog = nv04_clock_pll_prog; return 0; diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c index a4b2b7ebf9af..0db5dbfd91b5 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c @@ -41,7 +41,6 @@ nv40_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (ret) return ret; - priv->base.pll_set = nv04_clock_pll_set; priv->base.pll_calc = nv04_clock_pll_calc; priv->base.pll_prog = nv04_clock_pll_prog; return 0; diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c index f4147f67eda6..d09d3e78040c 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c @@ -33,50 +33,6 @@ struct nv50_clock_priv { }; static int -nv50_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq) -{ - struct nv50_clock_priv *priv = (void *)clk; - struct nouveau_bios *bios = nouveau_bios(priv); - struct nvbios_pll info; - int N1, M1, N2, M2, P; - int ret; - - ret = nvbios_pll_parse(bios, type, &info); - if (ret) { - nv_error(clk, "failed to retrieve pll data, %d\n", ret); - return ret; - } - - ret = nv04_pll_calc(clk, &info, freq, &N1, &M1, &N2, &M2, &P); - if (!ret) { - nv_error(clk, "failed pll calculation\n"); - return ret; - } - - switch (info.type) { - case PLL_VPLL0: - case PLL_VPLL1: - nv_wr32(priv, info.reg + 0, 0x10000611); - nv_mask(priv, info.reg + 4, 0x00ff00ff, (M1 << 16) | N1); - nv_mask(priv, info.reg + 8, 0x7fff00ff, (P << 28) | - (M2 << 16) | N2); - break; - case PLL_MEMORY: - nv_mask(priv, info.reg + 0, 0x01ff0000, (P << 22) | - (info.bias_p << 19) | - (P << 16)); - nv_wr32(priv, info.reg + 4, (N1 << 8) | M1); - break; - default: - nv_mask(priv, info.reg + 0, 0x00070000, (P << 16)); - nv_wr32(priv, info.reg + 4, (N1 << 8) | M1); - break; - } - - return 0; -} - -static int nv50_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, struct nouveau_oclass *oclass, void *data, u32 size, struct nouveau_object **pobject) @@ -89,7 +45,6 @@ nv50_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (ret) return ret; - priv->base.pll_set = nv50_clock_pll_set; priv->base.pll_calc = nv04_clock_pll_calc; return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c index 9068c98b96f6..f074cd20bc9c 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c @@ -32,47 +32,13 @@ struct nva3_clock_priv { struct nouveau_clock base; }; -static int -nva3_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq) -{ - struct nva3_clock_priv *priv = (void *)clk; - struct nouveau_bios *bios = nouveau_bios(priv); - struct nvbios_pll info; - int N, fN, M, P; - int ret; - - ret = nvbios_pll_parse(bios, type, &info); - if (ret) - return ret; - - ret = nva3_pll_calc(clk, &info, freq, &N, &fN, &M, &P); - if (ret < 0) - return ret; - - switch (info.type) { - case PLL_VPLL0: - case PLL_VPLL1: - nv_wr32(priv, info.reg + 0, 0x50000610); - nv_mask(priv, info.reg + 4, 0x003fffff, - (P << 16) | (M << 8) | N); - nv_wr32(priv, info.reg + 8, fN); - break; - default: - nv_warn(priv, "0x%08x/%dKhz unimplemented\n", type, freq); - ret = -EINVAL; - break; - } - - return ret; -} - int nva3_clock_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, struct nouveau_pll_vals *pv) { int ret, N, M, P; - ret = nva3_pll_calc(clock, info, clk, &N, NULL, &M, &P); + ret = nva3_pll_calc(nv_subdev(clock), info, clk, &N, NULL, &M, &P); if (ret > 0) { pv->refclk = info->refclk; @@ -97,7 +63,6 @@ nva3_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (ret) return ret; - priv->base.pll_set = nva3_clock_pll_set; priv->base.pll_calc = nva3_clock_pll_calc; return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c index 7c9626258a46..439d81c26130 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c @@ -33,41 +33,6 @@ struct nvc0_clock_priv { }; static int -nvc0_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq) -{ - struct nvc0_clock_priv *priv = (void *)clk; - struct nouveau_bios *bios = nouveau_bios(priv); - struct nvbios_pll info; - int N, fN, M, P; - int ret; - - ret = nvbios_pll_parse(bios, type, &info); - if (ret) - return ret; - - ret = nva3_pll_calc(clk, &info, freq, &N, &fN, &M, &P); - if (ret < 0) - return ret; - - switch (info.type) { - case PLL_VPLL0: - case PLL_VPLL1: - case PLL_VPLL2: - case PLL_VPLL3: - nv_mask(priv, info.reg + 0x0c, 0x00000000, 0x00000100); - nv_wr32(priv, info.reg + 0x04, (P << 16) | (N << 8) | M); - nv_wr32(priv, info.reg + 0x10, fN << 16); - break; - default: - nv_warn(priv, "0x%08x/%dKhz unimplemented\n", type, freq); - ret = -EINVAL; - break; - } - - return ret; -} - -static int nvc0_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, struct nouveau_oclass *oclass, void *data, u32 size, struct nouveau_object **pobject) @@ -80,7 +45,6 @@ nvc0_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (ret) return ret; - priv->base.pll_set = nvc0_clock_pll_set; priv->base.pll_calc = nva3_clock_pll_calc; return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/pll.h b/drivers/gpu/drm/nouveau/core/subdev/clock/pll.h index ef2c0078f337..445b14c33a98 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/pll.h +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/pll.h @@ -1,9 +1,9 @@ #ifndef __NOUVEAU_PLL_H__ #define __NOUVEAU_PLL_H__ -int nv04_pll_calc(struct nouveau_clock *, struct nvbios_pll *, u32 freq, +int nv04_pll_calc(struct nouveau_subdev *, struct nvbios_pll *, u32 freq, int *N1, int *M1, int *N2, int *M2, int *P); -int nva3_pll_calc(struct nouveau_clock *, struct nvbios_pll *, u32 freq, +int nva3_pll_calc(struct nouveau_subdev *, struct nvbios_pll *, u32 freq, int *N, int *fN, int *M, int *P); #endif diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/pllnv04.c b/drivers/gpu/drm/nouveau/core/subdev/clock/pllnv04.c index a2ab6d051ba8..cf1ed0dc9bc9 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/pllnv04.c +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/pllnv04.c @@ -21,14 +21,13 @@ * SOFTWARE. */ -#include <subdev/clock.h> #include <subdev/bios.h> #include <subdev/bios/pll.h> #include "pll.h" static int -getMNP_single(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, +getMNP_single(struct nouveau_subdev *subdev, struct nvbios_pll *info, int clk, int *pN, int *pM, int *pP) { /* Find M, N and P for a single stage PLL @@ -39,7 +38,7 @@ getMNP_single(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, * "clk" parameter in kHz * returns calculated clock */ - int cv = nouveau_bios(clock)->version.chip; + int cv = nouveau_bios(subdev)->version.chip; int minvco = info->vco1.min_freq, maxvco = info->vco1.max_freq; int minM = info->vco1.min_m, maxM = info->vco1.max_m; int minN = info->vco1.min_n, maxN = info->vco1.max_n; @@ -124,7 +123,7 @@ getMNP_single(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, } static int -getMNP_double(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, +getMNP_double(struct nouveau_subdev *subdev, struct nvbios_pll *info, int clk, int *pN1, int *pM1, int *pN2, int *pM2, int *pP) { /* Find M, N and P for a two stage PLL @@ -135,7 +134,7 @@ getMNP_double(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, * "clk" parameter in kHz * returns calculated clock */ - int chip_version = nouveau_bios(clock)->version.chip; + int chip_version = nouveau_bios(subdev)->version.chip; int minvco1 = info->vco1.min_freq, maxvco1 = info->vco1.max_freq; int minvco2 = info->vco2.min_freq, maxvco2 = info->vco2.max_freq; int minU1 = info->vco1.min_inputfreq, minU2 = info->vco2.min_inputfreq; @@ -223,20 +222,20 @@ getMNP_double(struct nouveau_clock *clock, struct nvbios_pll *info, int clk, } int -nv04_pll_calc(struct nouveau_clock *clk, struct nvbios_pll *info, u32 freq, +nv04_pll_calc(struct nouveau_subdev *subdev, struct nvbios_pll *info, u32 freq, int *N1, int *M1, int *N2, int *M2, int *P) { int ret; if (!info->vco2.max_freq) { - ret = getMNP_single(clk, info, freq, N1, M1, P); + ret = getMNP_single(subdev, info, freq, N1, M1, P); *N2 = 1; *M2 = 1; } else { - ret = getMNP_double(clk, info, freq, N1, M1, N2, M2, P); + ret = getMNP_double(subdev, info, freq, N1, M1, N2, M2, P); } if (!ret) - nv_error(clk, "unable to compute acceptable pll values\n"); + nv_error(subdev, "unable to compute acceptable pll values\n"); return ret; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/pllnva3.c b/drivers/gpu/drm/nouveau/core/subdev/clock/pllnva3.c index eed5c16cf610..2fe1f712eefa 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/clock/pllnva3.c +++ b/drivers/gpu/drm/nouveau/core/subdev/clock/pllnva3.c @@ -29,7 +29,7 @@ #include "pll.h" int -nva3_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info, +nva3_pll_calc(struct nouveau_subdev *subdev, struct nvbios_pll *info, u32 freq, int *pN, int *pfN, int *pM, int *P) { u32 best_err = ~0, err; @@ -50,8 +50,15 @@ nva3_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info, u32 tmp = freq * *P * M; N = tmp / info->refclk; fN = tmp % info->refclk; - if (!pfN && fN >= info->refclk / 2) - N++; + + if (!pfN) { + if (fN >= info->refclk / 2) + N++; + } else { + if (fN < info->refclk / 2) + N--; + fN = tmp - (N * info->refclk); + } if (N < info->vco1.min_n) continue; @@ -66,13 +73,14 @@ nva3_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info, } if (pfN) { - *pfN = (((fN << 13) / info->refclk) - 4096) & 0xffff; + *pfN = ((fN << 13) + info->refclk / 2) / info->refclk; + *pfN = (*pfN - 4096) & 0xffff; return freq; } } if (unlikely(best_err == ~0)) { - nv_error(clock, "unable to find matching pll values\n"); + nv_error(subdev, "unable to find matching pll values\n"); return -EINVAL; } |