On Fri, 11 Dec 2020, Dave Airlie <airlied@xxxxxxxxx> wrote:
> From: Dave Airlie <airlied@xxxxxxxxxx>
>
> This pulls a large chunk of the pll calculation code out of
> intel_display.c to a new file.
>
> One function makse sense to be an inline, otherwise this
> is pretty much a straight copy cover. also all the
> remaining hooks for g45 and older end up the same now.
This duplicates intel_panel_use_ssc, otherwise LGTM. Fixed up locally,
along with the intel_dpll.h fix to pass CI.
BR,
Jani.
>
> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/Makefile | 1 +
> drivers/gpu/drm/i915/display/intel_display.c | 1394 +----------------
> drivers/gpu/drm/i915/display/intel_display.h | 3 +
> .../drm/i915/display/intel_display_types.h | 5 +
> drivers/gpu/drm/i915/display/intel_dpll.c | 1371 ++++++++++++++++
> drivers/gpu/drm/i915/display/intel_dpll.h | 22 +
> 6 files changed, 1413 insertions(+), 1383 deletions(-)
> create mode 100644 drivers/gpu/drm/i915/display/intel_dpll.c
> create mode 100644 drivers/gpu/drm/i915/display/intel_dpll.h
>
> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> index ffec257702af..5d533de16335 100644
> --- a/drivers/gpu/drm/i915/Makefile
> +++ b/drivers/gpu/drm/i915/Makefile
> @@ -202,6 +202,7 @@ i915-y += \
> display/intel_display.o \
> display/intel_display_power.o \
> display/intel_dpio_phy.o \
> + display/intel_dpll.o \
> display/intel_dpll_mgr.o \
> display/intel_dsb.o \
> display/intel_fbc.o \
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 5dfec950c144..a0d9cd7b4e34 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -48,6 +48,7 @@
> #include "display/intel_display_debugfs.h"
> #include "display/intel_dp.h"
> #include "display/intel_dp_mst.h"
> +#include "display/intel_dpll.h"
> #include "display/intel_dpll_mgr.h"
> #include "display/intel_dsi.h"
> #include "display/intel_dvo.h"
> @@ -114,17 +115,6 @@ static void ilk_pfit_enable(const struct intel_crtc_state *crtc_state);
> static void intel_modeset_setup_hw_state(struct drm_device *dev,
> struct drm_modeset_acquire_ctx *ctx);
>
> -struct intel_limit {
> - struct {
> - int min, max;
> - } dot, vco, n, m, m1, m2, p, p1;
> -
> - struct {
> - int dot_limit;
> - int p2_slow, p2_fast;
> - } p2;
> -};
> -
> /* returns HPLL frequency in kHz */
> int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
> {
> @@ -192,271 +182,6 @@ static u32 intel_fdi_link_freq(struct drm_i915_private *dev_priv,
> return dev_priv->fdi_pll_freq;
> }
>
> -static const struct intel_limit intel_limits_i8xx_dac = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 908000, .max = 1512000 },
> - .n = { .min = 2, .max = 16 },
> - .m = { .min = 96, .max = 140 },
> - .m1 = { .min = 18, .max = 26 },
> - .m2 = { .min = 6, .max = 16 },
> - .p = { .min = 4, .max = 128 },
> - .p1 = { .min = 2, .max = 33 },
> - .p2 = { .dot_limit = 165000,
> - .p2_slow = 4, .p2_fast = 2 },
> -};
> -
> -static const struct intel_limit intel_limits_i8xx_dvo = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 908000, .max = 1512000 },
> - .n = { .min = 2, .max = 16 },
> - .m = { .min = 96, .max = 140 },
> - .m1 = { .min = 18, .max = 26 },
> - .m2 = { .min = 6, .max = 16 },
> - .p = { .min = 4, .max = 128 },
> - .p1 = { .min = 2, .max = 33 },
> - .p2 = { .dot_limit = 165000,
> - .p2_slow = 4, .p2_fast = 4 },
> -};
> -
> -static const struct intel_limit intel_limits_i8xx_lvds = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 908000, .max = 1512000 },
> - .n = { .min = 2, .max = 16 },
> - .m = { .min = 96, .max = 140 },
> - .m1 = { .min = 18, .max = 26 },
> - .m2 = { .min = 6, .max = 16 },
> - .p = { .min = 4, .max = 128 },
> - .p1 = { .min = 1, .max = 6 },
> - .p2 = { .dot_limit = 165000,
> - .p2_slow = 14, .p2_fast = 7 },
> -};
> -
> -static const struct intel_limit intel_limits_i9xx_sdvo = {
> - .dot = { .min = 20000, .max = 400000 },
> - .vco = { .min = 1400000, .max = 2800000 },
> - .n = { .min = 1, .max = 6 },
> - .m = { .min = 70, .max = 120 },
> - .m1 = { .min = 8, .max = 18 },
> - .m2 = { .min = 3, .max = 7 },
> - .p = { .min = 5, .max = 80 },
> - .p1 = { .min = 1, .max = 8 },
> - .p2 = { .dot_limit = 200000,
> - .p2_slow = 10, .p2_fast = 5 },
> -};
> -
> -static const struct intel_limit intel_limits_i9xx_lvds = {
> - .dot = { .min = 20000, .max = 400000 },
> - .vco = { .min = 1400000, .max = 2800000 },
> - .n = { .min = 1, .max = 6 },
> - .m = { .min = 70, .max = 120 },
> - .m1 = { .min = 8, .max = 18 },
> - .m2 = { .min = 3, .max = 7 },
> - .p = { .min = 7, .max = 98 },
> - .p1 = { .min = 1, .max = 8 },
> - .p2 = { .dot_limit = 112000,
> - .p2_slow = 14, .p2_fast = 7 },
> -};
> -
> -
> -static const struct intel_limit intel_limits_g4x_sdvo = {
> - .dot = { .min = 25000, .max = 270000 },
> - .vco = { .min = 1750000, .max = 3500000},
> - .n = { .min = 1, .max = 4 },
> - .m = { .min = 104, .max = 138 },
> - .m1 = { .min = 17, .max = 23 },
> - .m2 = { .min = 5, .max = 11 },
> - .p = { .min = 10, .max = 30 },
> - .p1 = { .min = 1, .max = 3},
> - .p2 = { .dot_limit = 270000,
> - .p2_slow = 10,
> - .p2_fast = 10
> - },
> -};
> -
> -static const struct intel_limit intel_limits_g4x_hdmi = {
> - .dot = { .min = 22000, .max = 400000 },
> - .vco = { .min = 1750000, .max = 3500000},
> - .n = { .min = 1, .max = 4 },
> - .m = { .min = 104, .max = 138 },
> - .m1 = { .min = 16, .max = 23 },
> - .m2 = { .min = 5, .max = 11 },
> - .p = { .min = 5, .max = 80 },
> - .p1 = { .min = 1, .max = 8},
> - .p2 = { .dot_limit = 165000,
> - .p2_slow = 10, .p2_fast = 5 },
> -};
> -
> -static const struct intel_limit intel_limits_g4x_single_channel_lvds = {
> - .dot = { .min = 20000, .max = 115000 },
> - .vco = { .min = 1750000, .max = 3500000 },
> - .n = { .min = 1, .max = 3 },
> - .m = { .min = 104, .max = 138 },
> - .m1 = { .min = 17, .max = 23 },
> - .m2 = { .min = 5, .max = 11 },
> - .p = { .min = 28, .max = 112 },
> - .p1 = { .min = 2, .max = 8 },
> - .p2 = { .dot_limit = 0,
> - .p2_slow = 14, .p2_fast = 14
> - },
> -};
> -
> -static const struct intel_limit intel_limits_g4x_dual_channel_lvds = {
> - .dot = { .min = 80000, .max = 224000 },
> - .vco = { .min = 1750000, .max = 3500000 },
> - .n = { .min = 1, .max = 3 },
> - .m = { .min = 104, .max = 138 },
> - .m1 = { .min = 17, .max = 23 },
> - .m2 = { .min = 5, .max = 11 },
> - .p = { .min = 14, .max = 42 },
> - .p1 = { .min = 2, .max = 6 },
> - .p2 = { .dot_limit = 0,
> - .p2_slow = 7, .p2_fast = 7
> - },
> -};
> -
> -static const struct intel_limit pnv_limits_sdvo = {
> - .dot = { .min = 20000, .max = 400000},
> - .vco = { .min = 1700000, .max = 3500000 },
> - /* Pineview's Ncounter is a ring counter */
> - .n = { .min = 3, .max = 6 },
> - .m = { .min = 2, .max = 256 },
> - /* Pineview only has one combined m divider, which we treat as m2. */
> - .m1 = { .min = 0, .max = 0 },
> - .m2 = { .min = 0, .max = 254 },
> - .p = { .min = 5, .max = 80 },
> - .p1 = { .min = 1, .max = 8 },
> - .p2 = { .dot_limit = 200000,
> - .p2_slow = 10, .p2_fast = 5 },
> -};
> -
> -static const struct intel_limit pnv_limits_lvds = {
> - .dot = { .min = 20000, .max = 400000 },
> - .vco = { .min = 1700000, .max = 3500000 },
> - .n = { .min = 3, .max = 6 },
> - .m = { .min = 2, .max = 256 },
> - .m1 = { .min = 0, .max = 0 },
> - .m2 = { .min = 0, .max = 254 },
> - .p = { .min = 7, .max = 112 },
> - .p1 = { .min = 1, .max = 8 },
> - .p2 = { .dot_limit = 112000,
> - .p2_slow = 14, .p2_fast = 14 },
> -};
> -
> -/* Ironlake / Sandybridge
> - *
> - * We calculate clock using (register_value + 2) for N/M1/M2, so here
> - * the range value for them is (actual_value - 2).
> - */
> -static const struct intel_limit ilk_limits_dac = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 1760000, .max = 3510000 },
> - .n = { .min = 1, .max = 5 },
> - .m = { .min = 79, .max = 127 },
> - .m1 = { .min = 12, .max = 22 },
> - .m2 = { .min = 5, .max = 9 },
> - .p = { .min = 5, .max = 80 },
> - .p1 = { .min = 1, .max = 8 },
> - .p2 = { .dot_limit = 225000,
> - .p2_slow = 10, .p2_fast = 5 },
> -};
> -
> -static const struct intel_limit ilk_limits_single_lvds = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 1760000, .max = 3510000 },
> - .n = { .min = 1, .max = 3 },
> - .m = { .min = 79, .max = 118 },
> - .m1 = { .min = 12, .max = 22 },
> - .m2 = { .min = 5, .max = 9 },
> - .p = { .min = 28, .max = 112 },
> - .p1 = { .min = 2, .max = 8 },
> - .p2 = { .dot_limit = 225000,
> - .p2_slow = 14, .p2_fast = 14 },
> -};
> -
> -static const struct intel_limit ilk_limits_dual_lvds = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 1760000, .max = 3510000 },
> - .n = { .min = 1, .max = 3 },
> - .m = { .min = 79, .max = 127 },
> - .m1 = { .min = 12, .max = 22 },
> - .m2 = { .min = 5, .max = 9 },
> - .p = { .min = 14, .max = 56 },
> - .p1 = { .min = 2, .max = 8 },
> - .p2 = { .dot_limit = 225000,
> - .p2_slow = 7, .p2_fast = 7 },
> -};
> -
> -/* LVDS 100mhz refclk limits. */
> -static const struct intel_limit ilk_limits_single_lvds_100m = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 1760000, .max = 3510000 },
> - .n = { .min = 1, .max = 2 },
> - .m = { .min = 79, .max = 126 },
> - .m1 = { .min = 12, .max = 22 },
> - .m2 = { .min = 5, .max = 9 },
> - .p = { .min = 28, .max = 112 },
> - .p1 = { .min = 2, .max = 8 },
> - .p2 = { .dot_limit = 225000,
> - .p2_slow = 14, .p2_fast = 14 },
> -};
> -
> -static const struct intel_limit ilk_limits_dual_lvds_100m = {
> - .dot = { .min = 25000, .max = 350000 },
> - .vco = { .min = 1760000, .max = 3510000 },
> - .n = { .min = 1, .max = 3 },
> - .m = { .min = 79, .max = 126 },
> - .m1 = { .min = 12, .max = 22 },
> - .m2 = { .min = 5, .max = 9 },
> - .p = { .min = 14, .max = 42 },
> - .p1 = { .min = 2, .max = 6 },
> - .p2 = { .dot_limit = 225000,
> - .p2_slow = 7, .p2_fast = 7 },
> -};
> -
> -static const struct intel_limit intel_limits_vlv = {
> - /*
> - * These are the data rate limits (measured in fast clocks)
> - * since those are the strictest limits we have. The fast
> - * clock and actual rate limits are more relaxed, so checking
> - * them would make no difference.
> - */
> - .dot = { .min = 25000 * 5, .max = 270000 * 5 },
> - .vco = { .min = 4000000, .max = 6000000 },
> - .n = { .min = 1, .max = 7 },
> - .m1 = { .min = 2, .max = 3 },
> - .m2 = { .min = 11, .max = 156 },
> - .p1 = { .min = 2, .max = 3 },
> - .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
> -};
> -
> -static const struct intel_limit intel_limits_chv = {
> - /*
> - * These are the data rate limits (measured in fast clocks)
> - * since those are the strictest limits we have. The fast
> - * clock and actual rate limits are more relaxed, so checking
> - * them would make no difference.
> - */
> - .dot = { .min = 25000 * 5, .max = 540000 * 5},
> - .vco = { .min = 4800000, .max = 6480000 },
> - .n = { .min = 1, .max = 1 },
> - .m1 = { .min = 2, .max = 2 },
> - .m2 = { .min = 24 << 22, .max = 175 << 22 },
> - .p1 = { .min = 2, .max = 4 },
> - .p2 = { .p2_slow = 1, .p2_fast = 14 },
> -};
> -
> -static const struct intel_limit intel_limits_bxt = {
> - /* FIXME: find real dot limits */
> - .dot = { .min = 0, .max = INT_MAX },
> - .vco = { .min = 4800000, .max = 6700000 },
> - .n = { .min = 1, .max = 1 },
> - .m1 = { .min = 2, .max = 2 },
> - /* FIXME: find real m2 limits */
> - .m2 = { .min = 2 << 22, .max = 255 << 22 },
> - .p1 = { .min = 2, .max = 4 },
> - .p2 = { .p2_slow = 1, .p2_fast = 20 },
> -};
> -
> /* WA Display #0827: Gen9:all */
> static void
> skl_wa_827(struct drm_i915_private *dev_priv, enum pipe pipe, bool enable)
> @@ -501,483 +226,6 @@ is_trans_port_sync_mode(const struct intel_crtc_state *crtc_state)
> is_trans_port_sync_slave(crtc_state);
> }
>
> -/*
> - * Platform specific helpers to calculate the port PLL loopback- (clock.m),
> - * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
> - * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
> - * The helpers' return value is the rate of the clock that is fed to the
> - * display engine's pipe which can be the above fast dot clock rate or a
> - * divided-down version of it.
> - */
> -/* m1 is reserved as 0 in Pineview, n is a ring counter */
> -static int pnv_calc_dpll_params(int refclk, struct dpll *clock)
> -{
> - clock->m = clock->m2 + 2;
> - clock->p = clock->p1 * clock->p2;
> - if (WARN_ON(clock->n == 0 || clock->p == 0))
> - return 0;
> - clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
> - clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> -
> - return clock->dot;
> -}
> -
> -static u32 i9xx_dpll_compute_m(struct dpll *dpll)
> -{
> - return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
> -}
> -
> -static int i9xx_calc_dpll_params(int refclk, struct dpll *clock)
> -{
> - clock->m = i9xx_dpll_compute_m(clock);
> - clock->p = clock->p1 * clock->p2;
> - if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
> - return 0;
> - clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
> - clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> -
> - return clock->dot;
> -}
> -
> -static int vlv_calc_dpll_params(int refclk, struct dpll *clock)
> -{
> - clock->m = clock->m1 * clock->m2;
> - clock->p = clock->p1 * clock->p2;
> - if (WARN_ON(clock->n == 0 || clock->p == 0))
> - return 0;
> - clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
> - clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> -
> - return clock->dot / 5;
> -}
> -
> -int chv_calc_dpll_params(int refclk, struct dpll *clock)
> -{
> - clock->m = clock->m1 * clock->m2;
> - clock->p = clock->p1 * clock->p2;
> - if (WARN_ON(clock->n == 0 || clock->p == 0))
> - return 0;
> - clock->vco = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, clock->m),
> - clock->n << 22);
> - clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> -
> - return clock->dot / 5;
> -}
> -
> -/*
> - * Returns whether the given set of divisors are valid for a given refclk with
> - * the given connectors.
> - */
> -static bool intel_pll_is_valid(struct drm_i915_private *dev_priv,
> - const struct intel_limit *limit,
> - const struct dpll *clock)
> -{
> - if (clock->n < limit->n.min || limit->n.max < clock->n)
> - return false;
> - if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
> - return false;
> - if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
> - return false;
> - if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
> - return false;
> -
> - if (!IS_PINEVIEW(dev_priv) && !IS_VALLEYVIEW(dev_priv) &&
> - !IS_CHERRYVIEW(dev_priv) && !IS_GEN9_LP(dev_priv))
> - if (clock->m1 <= clock->m2)
> - return false;
> -
> - if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
> - !IS_GEN9_LP(dev_priv)) {
> - if (clock->p < limit->p.min || limit->p.max < clock->p)
> - return false;
> - if (clock->m < limit->m.min || limit->m.max < clock->m)
> - return false;
> - }
> -
> - if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
> - return false;
> - /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
> - * connector, etc., rather than just a single range.
> - */
> - if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
> - return false;
> -
> - return true;
> -}
> -
> -static int
> -i9xx_select_p2_div(const struct intel_limit *limit,
> - const struct intel_crtc_state *crtc_state,
> - int target)
> -{
> - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - /*
> - * For LVDS 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 (intel_is_dual_link_lvds(dev_priv))
> - return limit->p2.p2_fast;
> - else
> - return limit->p2.p2_slow;
> - } else {
> - if (target < limit->p2.dot_limit)
> - return limit->p2.p2_slow;
> - else
> - return limit->p2.p2_fast;
> - }
> -}
> -
> -/*
> - * 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.
> - *
> - * Target and reference clocks are specified in kHz.
> - *
> - * If match_clock is provided, then best_clock P divider must match the P
> - * divider from @match_clock used for LVDS downclocking.
> - */
> -static bool
> -i9xx_find_best_dpll(const struct intel_limit *limit,
> - struct intel_crtc_state *crtc_state,
> - int target, int refclk, struct dpll *match_clock,
> - struct dpll *best_clock)
> -{
> - struct drm_device *dev = crtc_state->uapi.crtc->dev;
> - struct dpll clock;
> - int err = target;
> -
> - memset(best_clock, 0, sizeof(*best_clock));
> -
> - clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
> -
> - for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
> - clock.m1++) {
> - for (clock.m2 = limit->m2.min;
> - clock.m2 <= limit->m2.max; clock.m2++) {
> - if (clock.m2 >= clock.m1)
> - break;
> - for (clock.n = limit->n.min;
> - clock.n <= limit->n.max; clock.n++) {
> - for (clock.p1 = limit->p1.min;
> - clock.p1 <= limit->p1.max; clock.p1++) {
> - int this_err;
> -
> - i9xx_calc_dpll_params(refclk, &clock);
> - if (!intel_pll_is_valid(to_i915(dev),
> - limit,
> - &clock))
> - continue;
> - if (match_clock &&
> - clock.p != match_clock->p)
> - continue;
> -
> - this_err = abs(clock.dot - target);
> - if (this_err < err) {
> - *best_clock = clock;
> - err = this_err;
> - }
> - }
> - }
> - }
> - }
> -
> - return (err != target);
> -}
> -
> -/*
> - * 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.
> - *
> - * Target and reference clocks are specified in kHz.
> - *
> - * If match_clock is provided, then best_clock P divider must match the P
> - * divider from @match_clock used for LVDS downclocking.
> - */
> -static bool
> -pnv_find_best_dpll(const struct intel_limit *limit,
> - struct intel_crtc_state *crtc_state,
> - int target, int refclk, struct dpll *match_clock,
> - struct dpll *best_clock)
> -{
> - struct drm_device *dev = crtc_state->uapi.crtc->dev;
> - struct dpll clock;
> - int err = target;
> -
> - memset(best_clock, 0, sizeof(*best_clock));
> -
> - clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
> -
> - for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
> - clock.m1++) {
> - for (clock.m2 = limit->m2.min;
> - clock.m2 <= limit->m2.max; clock.m2++) {
> - for (clock.n = limit->n.min;
> - clock.n <= limit->n.max; clock.n++) {
> - for (clock.p1 = limit->p1.min;
> - clock.p1 <= limit->p1.max; clock.p1++) {
> - int this_err;
> -
> - pnv_calc_dpll_params(refclk, &clock);
> - if (!intel_pll_is_valid(to_i915(dev),
> - limit,
> - &clock))
> - continue;
> - if (match_clock &&
> - clock.p != match_clock->p)
> - continue;
> -
> - this_err = abs(clock.dot - target);
> - if (this_err < err) {
> - *best_clock = clock;
> - err = this_err;
> - }
> - }
> - }
> - }
> - }
> -
> - return (err != target);
> -}
> -
> -/*
> - * 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.
> - *
> - * Target and reference clocks are specified in kHz.
> - *
> - * If match_clock is provided, then best_clock P divider must match the P
> - * divider from @match_clock used for LVDS downclocking.
> - */
> -static bool
> -g4x_find_best_dpll(const struct intel_limit *limit,
> - struct intel_crtc_state *crtc_state,
> - int target, int refclk, struct dpll *match_clock,
> - struct dpll *best_clock)
> -{
> - struct drm_device *dev = crtc_state->uapi.crtc->dev;
> - struct dpll clock;
> - int max_n;
> - bool found = false;
> - /* approximately equals target * 0.00585 */
> - int err_most = (target >> 8) + (target >> 9);
> -
> - memset(best_clock, 0, sizeof(*best_clock));
> -
> - clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
> -
> - 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 */
> - 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;
> -
> - i9xx_calc_dpll_params(refclk, &clock);
> - if (!intel_pll_is_valid(to_i915(dev),
> - limit,
> - &clock))
> - continue;
> -
> - this_err = abs(clock.dot - target);
> - if (this_err < err_most) {
> - *best_clock = clock;
> - err_most = this_err;
> - max_n = clock.n;
> - found = true;
> - }
> - }
> - }
> - }
> - }
> - return found;
> -}
> -
> -/*
> - * Check if the calculated PLL configuration is more optimal compared to the
> - * best configuration and error found so far. Return the calculated error.
> - */
> -static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
> - const struct dpll *calculated_clock,
> - const struct dpll *best_clock,
> - unsigned int best_error_ppm,
> - unsigned int *error_ppm)
> -{
> - /*
> - * For CHV ignore the error and consider only the P value.
> - * Prefer a bigger P value based on HW requirements.
> - */
> - if (IS_CHERRYVIEW(to_i915(dev))) {
> - *error_ppm = 0;
> -
> - return calculated_clock->p > best_clock->p;
> - }
> -
> - if (drm_WARN_ON_ONCE(dev, !target_freq))
> - return false;
> -
> - *error_ppm = div_u64(1000000ULL *
> - abs(target_freq - calculated_clock->dot),
> - target_freq);
> - /*
> - * Prefer a better P value over a better (smaller) error if the error
> - * is small. Ensure this preference for future configurations too by
> - * setting the error to 0.
> - */
> - if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
> - *error_ppm = 0;
> -
> - return true;
> - }
> -
> - return *error_ppm + 10 < best_error_ppm;
> -}
> -
> -/*
> - * 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
> -vlv_find_best_dpll(const struct intel_limit *limit,
> - struct intel_crtc_state *crtc_state,
> - int target, int refclk, struct dpll *match_clock,
> - struct dpll *best_clock)
> -{
> - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - struct drm_device *dev = crtc->base.dev;
> - struct dpll clock;
> - unsigned int bestppm = 1000000;
> - /* min update 19.2 MHz */
> - int max_n = min(limit->n.max, refclk / 19200);
> - bool found = false;
> -
> - target *= 5; /* fast clock */
> -
> - memset(best_clock, 0, sizeof(*best_clock));
> -
> - /* based on hardware requirement, prefer smaller n to precision */
> - for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
> - for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
> - for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
> - clock.p2 -= clock.p2 > 10 ? 2 : 1) {
> - clock.p = clock.p1 * clock.p2;
> - /* based on hardware requirement, prefer bigger m1,m2 values */
> - for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
> - unsigned int ppm;
> -
> - clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
> - refclk * clock.m1);
> -
> - vlv_calc_dpll_params(refclk, &clock);
> -
> - if (!intel_pll_is_valid(to_i915(dev),
> - limit,
> - &clock))
> - continue;
> -
> - if (!vlv_PLL_is_optimal(dev, target,
> - &clock,
> - best_clock,
> - bestppm, &ppm))
> - continue;
> -
> - *best_clock = clock;
> - bestppm = ppm;
> - found = true;
> - }
> - }
> - }
> - }
> -
> - return found;
> -}
> -
> -/*
> - * 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
> -chv_find_best_dpll(const struct intel_limit *limit,
> - struct intel_crtc_state *crtc_state,
> - int target, int refclk, struct dpll *match_clock,
> - struct dpll *best_clock)
> -{
> - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - struct drm_device *dev = crtc->base.dev;
> - unsigned int best_error_ppm;
> - struct dpll clock;
> - u64 m2;
> - int found = false;
> -
> - memset(best_clock, 0, sizeof(*best_clock));
> - best_error_ppm = 1000000;
> -
> - /*
> - * Based on hardware doc, the n always set to 1, and m1 always
> - * set to 2. If requires to support 200Mhz refclk, we need to
> - * revisit this because n may not 1 anymore.
> - */
> - clock.n = 1;
> - clock.m1 = 2;
> - target *= 5; /* fast clock */
> -
> - for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
> - for (clock.p2 = limit->p2.p2_fast;
> - clock.p2 >= limit->p2.p2_slow;
> - clock.p2 -= clock.p2 > 10 ? 2 : 1) {
> - unsigned int error_ppm;
> -
> - clock.p = clock.p1 * clock.p2;
> -
> - m2 = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(target, clock.p * clock.n) << 22,
> - refclk * clock.m1);
> -
> - if (m2 > INT_MAX/clock.m1)
> - continue;
> -
> - clock.m2 = m2;
> -
> - chv_calc_dpll_params(refclk, &clock);
> -
> - if (!intel_pll_is_valid(to_i915(dev), limit, &clock))
> - continue;
> -
> - if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
> - best_error_ppm, &error_ppm))
> - continue;
> -
> - *best_clock = clock;
> - best_error_ppm = error_ppm;
> - found = true;
> - }
> - }
> -
> - return found;
> -}
> -
> -bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
> - struct dpll *best_clock)
> -{
> - int refclk = 100000;
> - const struct intel_limit *limit = &intel_limits_bxt;
> -
> - return chv_find_best_dpll(limit, crtc_state,
> - crtc_state->port_clock, refclk,
> - NULL, best_clock);
> -}
> -
> static bool pipe_scanline_is_moving(struct drm_i915_private *dev_priv,
> enum pipe pipe)
> {
> @@ -5274,7 +4522,7 @@ static void ivb_update_fdi_bc_bifurcation(const struct intel_crtc_state *crtc_st
> * Finds the encoder associated with the given CRTC. This can only be
> * used when we know that the CRTC isn't feeding multiple encoders!
> */
> -static struct intel_encoder *
> +struct intel_encoder *
> intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
> const struct intel_crtc_state *crtc_state)
> {
> @@ -7950,43 +7198,6 @@ static bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
> && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
> }
>
> -static u32 pnv_dpll_compute_fp(struct dpll *dpll)
> -{
> - return (1 << dpll->n) << 16 | dpll->m2;
> -}
> -
> -static u32 i9xx_dpll_compute_fp(struct dpll *dpll)
> -{
> - return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
> -}
> -
> -static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state,
> - struct dpll *reduced_clock)
> -{
> - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - u32 fp, fp2 = 0;
> -
> - if (IS_PINEVIEW(dev_priv)) {
> - fp = pnv_dpll_compute_fp(&crtc_state->dpll);
> - if (reduced_clock)
> - fp2 = pnv_dpll_compute_fp(reduced_clock);
> - } else {
> - fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
> - if (reduced_clock)
> - fp2 = i9xx_dpll_compute_fp(reduced_clock);
> - }
> -
> - crtc_state->dpll_hw_state.fp0 = fp;
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> - reduced_clock) {
> - crtc_state->dpll_hw_state.fp1 = fp2;
> - } else {
> - crtc_state->dpll_hw_state.fp1 = fp;
> - }
> -}
> -
> static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
> pipe)
> {
> @@ -8111,39 +7322,6 @@ void intel_dp_set_m_n(const struct intel_crtc_state *crtc_state, enum link_m_n_s
> intel_cpu_transcoder_set_m_n(crtc_state, dp_m_n, dp_m2_n2);
> }
>
> -static void vlv_compute_dpll(struct intel_crtc *crtc,
> - struct intel_crtc_state *pipe_config)
> -{
> - pipe_config->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV |
> - DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
> - if (crtc->pipe != PIPE_A)
> - pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
> -
> - /* DPLL not used with DSI, but still need the rest set up */
> - if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
> - pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE |
> - DPLL_EXT_BUFFER_ENABLE_VLV;
> -
> - pipe_config->dpll_hw_state.dpll_md =
> - (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
> -}
> -
> -static void chv_compute_dpll(struct intel_crtc *crtc,
> - struct intel_crtc_state *pipe_config)
> -{
> - pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
> - DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
> - if (crtc->pipe != PIPE_A)
> - pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
> -
> - /* DPLL not used with DSI, but still need the rest set up */
> - if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
> - pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE;
> -
> - pipe_config->dpll_hw_state.dpll_md =
> - (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
> -}
> -
> static void vlv_prepare_pll(struct intel_crtc *crtc,
> const struct intel_crtc_state *pipe_config)
> {
> @@ -8403,128 +7581,7 @@ void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe)
> vlv_disable_pll(dev_priv, pipe);
> }
>
> -static void i9xx_compute_dpll(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state,
> - struct dpll *reduced_clock)
> -{
> - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - u32 dpll;
> - struct dpll *clock = &crtc_state->dpll;
>
> - i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
> -
> - dpll = DPLL_VGA_MODE_DIS;
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
> - dpll |= DPLLB_MODE_LVDS;
> - else
> - dpll |= DPLLB_MODE_DAC_SERIAL;
> -
> - if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
> - IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
> - dpll |= (crtc_state->pixel_multiplier - 1)
> - << SDVO_MULTIPLIER_SHIFT_HIRES;
> - }
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
> - intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
> - dpll |= DPLL_SDVO_HIGH_SPEED;
> -
> - if (intel_crtc_has_dp_encoder(crtc_state))
> - dpll |= DPLL_SDVO_HIGH_SPEED;
> -
> - /* compute bitmask from p1 value */
> - if (IS_PINEVIEW(dev_priv))
> - dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
> - else {
> - dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> - if (IS_G4X(dev_priv) && reduced_clock)
> - dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
> - }
> - switch (clock->p2) {
> - case 5:
> - dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
> - break;
> - case 7:
> - dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
> - break;
> - case 10:
> - dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
> - break;
> - case 14:
> - dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
> - break;
> - }
> - if (INTEL_GEN(dev_priv) >= 4)
> - dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
> -
> - if (crtc_state->sdvo_tv_clock)
> - dpll |= PLL_REF_INPUT_TVCLKINBC;
> - else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> - intel_panel_use_ssc(dev_priv))
> - dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
> - else
> - dpll |= PLL_REF_INPUT_DREFCLK;
> -
> - dpll |= DPLL_VCO_ENABLE;
> - crtc_state->dpll_hw_state.dpll = dpll;
> -
> - if (INTEL_GEN(dev_priv) >= 4) {
> - u32 dpll_md = (crtc_state->pixel_multiplier - 1)
> - << DPLL_MD_UDI_MULTIPLIER_SHIFT;
> - crtc_state->dpll_hw_state.dpll_md = dpll_md;
> - }
> -}
> -
> -static void i8xx_compute_dpll(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state,
> - struct dpll *reduced_clock)
> -{
> - struct drm_device *dev = crtc->base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> - u32 dpll;
> - struct dpll *clock = &crtc_state->dpll;
> -
> - i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
> -
> - dpll = DPLL_VGA_MODE_DIS;
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> - } else {
> - if (clock->p1 == 2)
> - dpll |= PLL_P1_DIVIDE_BY_TWO;
> - else
> - dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> - if (clock->p2 == 4)
> - dpll |= PLL_P2_DIVIDE_BY_4;
> - }
> -
> - /*
> - * Bspec:
> - * "[Almador Errata}: For the correct operation of the muxed DVO pins
> - * (GDEVSELB/I2Cdata, GIRDBY/I2CClk) and (GFRAMEB/DVI_Data,
> - * GTRDYB/DVI_Clk): Bit 31 (DPLL VCO Enable) and Bit 30 (2X Clock
> - * Enable) must be set to “1” in both the DPLL A Control Register
> - * (06014h-06017h) and DPLL B Control Register (06018h-0601Bh)."
> - *
> - * For simplicity We simply keep both bits always enabled in
> - * both DPLLS. The spec says we should disable the DVO 2X clock
> - * when not needed, but this seems to work fine in practice.
> - */
> - if (IS_I830(dev_priv) ||
> - intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO))
> - dpll |= DPLL_DVO_2X_MODE;
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> - intel_panel_use_ssc(dev_priv))
> - dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
> - else
> - dpll |= PLL_REF_INPUT_DREFCLK;
> -
> - dpll |= DPLL_VCO_ENABLE;
> - crtc_state->dpll_hw_state.dpll = dpll;
> -}
>
> static void intel_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
> {
> @@ -8730,207 +7787,6 @@ static void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state)
> intel_de_posting_read(dev_priv, PIPECONF(crtc->pipe));
> }
>
> -static int i8xx_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_device *dev = crtc->base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> - const struct intel_limit *limit;
> - int refclk = 48000;
> -
> - memset(&crtc_state->dpll_hw_state, 0,
> - sizeof(crtc_state->dpll_hw_state));
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - if (intel_panel_use_ssc(dev_priv)) {
> - refclk = dev_priv->vbt.lvds_ssc_freq;
> - drm_dbg_kms(&dev_priv->drm,
> - "using SSC reference clock of %d kHz\n",
> - refclk);
> - }
> -
> - limit = &intel_limits_i8xx_lvds;
> - } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO)) {
> - limit = &intel_limits_i8xx_dvo;
> - } else {
> - limit = &intel_limits_i8xx_dac;
> - }
> -
> - if (!crtc_state->clock_set &&
> - !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> - refclk, NULL, &crtc_state->dpll)) {
> - drm_err(&dev_priv->drm,
> - "Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> -
> - i8xx_compute_dpll(crtc, crtc_state, NULL);
> -
> - return 0;
> -}
> -
> -static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - const struct intel_limit *limit;
> - int refclk = 96000;
> -
> - memset(&crtc_state->dpll_hw_state, 0,
> - sizeof(crtc_state->dpll_hw_state));
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - if (intel_panel_use_ssc(dev_priv)) {
> - refclk = dev_priv->vbt.lvds_ssc_freq;
> - drm_dbg_kms(&dev_priv->drm,
> - "using SSC reference clock of %d kHz\n",
> - refclk);
> - }
> -
> - if (intel_is_dual_link_lvds(dev_priv))
> - limit = &intel_limits_g4x_dual_channel_lvds;
> - else
> - limit = &intel_limits_g4x_single_channel_lvds;
> - } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
> - intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
> - limit = &intel_limits_g4x_hdmi;
> - } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO)) {
> - limit = &intel_limits_g4x_sdvo;
> - } else {
> - /* The option is for other outputs */
> - limit = &intel_limits_i9xx_sdvo;
> - }
> -
> - if (!crtc_state->clock_set &&
> - !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> - refclk, NULL, &crtc_state->dpll)) {
> - drm_err(&dev_priv->drm,
> - "Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> -
> - i9xx_compute_dpll(crtc, crtc_state, NULL);
> -
> - return 0;
> -}
> -
> -static int pnv_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_device *dev = crtc->base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> - const struct intel_limit *limit;
> - int refclk = 96000;
> -
> - memset(&crtc_state->dpll_hw_state, 0,
> - sizeof(crtc_state->dpll_hw_state));
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - if (intel_panel_use_ssc(dev_priv)) {
> - refclk = dev_priv->vbt.lvds_ssc_freq;
> - drm_dbg_kms(&dev_priv->drm,
> - "using SSC reference clock of %d kHz\n",
> - refclk);
> - }
> -
> - limit = &pnv_limits_lvds;
> - } else {
> - limit = &pnv_limits_sdvo;
> - }
> -
> - if (!crtc_state->clock_set &&
> - !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> - refclk, NULL, &crtc_state->dpll)) {
> - drm_err(&dev_priv->drm,
> - "Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> -
> - i9xx_compute_dpll(crtc, crtc_state, NULL);
> -
> - return 0;
> -}
> -
> -static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_device *dev = crtc->base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> - const struct intel_limit *limit;
> - int refclk = 96000;
> -
> - memset(&crtc_state->dpll_hw_state, 0,
> - sizeof(crtc_state->dpll_hw_state));
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - if (intel_panel_use_ssc(dev_priv)) {
> - refclk = dev_priv->vbt.lvds_ssc_freq;
> - drm_dbg_kms(&dev_priv->drm,
> - "using SSC reference clock of %d kHz\n",
> - refclk);
> - }
> -
> - limit = &intel_limits_i9xx_lvds;
> - } else {
> - limit = &intel_limits_i9xx_sdvo;
> - }
> -
> - if (!crtc_state->clock_set &&
> - !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> - refclk, NULL, &crtc_state->dpll)) {
> - drm_err(&dev_priv->drm,
> - "Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> -
> - i9xx_compute_dpll(crtc, crtc_state, NULL);
> -
> - return 0;
> -}
> -
> -static int chv_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - int refclk = 100000;
> - const struct intel_limit *limit = &intel_limits_chv;
> - struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> -
> - memset(&crtc_state->dpll_hw_state, 0,
> - sizeof(crtc_state->dpll_hw_state));
> -
> - if (!crtc_state->clock_set &&
> - !chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> - refclk, NULL, &crtc_state->dpll)) {
> - drm_err(&i915->drm, "Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> -
> - chv_compute_dpll(crtc, crtc_state);
> -
> - return 0;
> -}
> -
> -static int vlv_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - int refclk = 100000;
> - const struct intel_limit *limit = &intel_limits_vlv;
> - struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> -
> - memset(&crtc_state->dpll_hw_state, 0,
> - sizeof(crtc_state->dpll_hw_state));
> -
> - if (!crtc_state->clock_set &&
> - !vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> - refclk, NULL, &crtc_state->dpll)) {
> - drm_err(&i915->drm, "Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> -
> - vlv_compute_dpll(crtc, crtc_state);
> -
> - return 0;
> -}
>
> static bool i9xx_has_pfit(struct drm_i915_private *dev_priv)
> {
> @@ -9941,172 +8797,6 @@ int ilk_get_lanes_required(int target_clock, int link_bw, int bpp)
> return DIV_ROUND_UP(bps, link_bw * 8);
> }
>
> -static bool ilk_needs_fb_cb_tune(struct dpll *dpll, int factor)
> -{
> - return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
> -}
> -
> -static void ilk_compute_dpll(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state,
> - struct dpll *reduced_clock)
> -{
> - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - u32 dpll, fp, fp2;
> - int factor;
> -
> - /* Enable autotuning of the PLL clock (if permissible) */
> - factor = 21;
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - if ((intel_panel_use_ssc(dev_priv) &&
> - dev_priv->vbt.lvds_ssc_freq == 100000) ||
> - (HAS_PCH_IBX(dev_priv) &&
> - intel_is_dual_link_lvds(dev_priv)))
> - factor = 25;
> - } else if (crtc_state->sdvo_tv_clock) {
> - factor = 20;
> - }
> -
> - fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
> -
> - if (ilk_needs_fb_cb_tune(&crtc_state->dpll, factor))
> - fp |= FP_CB_TUNE;
> -
> - if (reduced_clock) {
> - fp2 = i9xx_dpll_compute_fp(reduced_clock);
> -
> - if (reduced_clock->m < factor * reduced_clock->n)
> - fp2 |= FP_CB_TUNE;
> - } else {
> - fp2 = fp;
> - }
> -
> - dpll = 0;
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
> - dpll |= DPLLB_MODE_LVDS;
> - else
> - dpll |= DPLLB_MODE_DAC_SERIAL;
> -
> - dpll |= (crtc_state->pixel_multiplier - 1)
> - << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
> - intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
> - dpll |= DPLL_SDVO_HIGH_SPEED;
> -
> - if (intel_crtc_has_dp_encoder(crtc_state))
> - dpll |= DPLL_SDVO_HIGH_SPEED;
> -
> - /*
> - * The high speed IO clock is only really required for
> - * SDVO/HDMI/DP, but we also enable it for CRT to make it
> - * possible to share the DPLL between CRT and HDMI. Enabling
> - * the clock needlessly does no real harm, except use up a
> - * bit of power potentially.
> - *
> - * We'll limit this to IVB with 3 pipes, since it has only two
> - * DPLLs and so DPLL sharing is the only way to get three pipes
> - * driving PCH ports at the same time. On SNB we could do this,
> - * and potentially avoid enabling the second DPLL, but it's not
> - * clear if it''s a win or loss power wise. No point in doing
> - * this on ILK at all since it has a fixed DPLL<->pipe mapping.
> - */
> - if (INTEL_NUM_PIPES(dev_priv) == 3 &&
> - intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
> - dpll |= DPLL_SDVO_HIGH_SPEED;
> -
> - /* compute bitmask from p1 value */
> - dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> - /* also FPA1 */
> - dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
> -
> - switch (crtc_state->dpll.p2) {
> - case 5:
> - dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
> - break;
> - case 7:
> - dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
> - break;
> - case 10:
> - dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
> - break;
> - case 14:
> - dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
> - break;
> - }
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> - intel_panel_use_ssc(dev_priv))
> - dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
> - else
> - dpll |= PLL_REF_INPUT_DREFCLK;
> -
> - dpll |= DPLL_VCO_ENABLE;
> -
> - crtc_state->dpll_hw_state.dpll = dpll;
> - crtc_state->dpll_hw_state.fp0 = fp;
> - crtc_state->dpll_hw_state.fp1 = fp2;
> -}
> -
> -static int ilk_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - struct intel_atomic_state *state =
> - to_intel_atomic_state(crtc_state->uapi.state);
> - const struct intel_limit *limit;
> - int refclk = 120000;
> -
> - memset(&crtc_state->dpll_hw_state, 0,
> - sizeof(crtc_state->dpll_hw_state));
> -
> - /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
> - if (!crtc_state->has_pch_encoder)
> - return 0;
> -
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> - if (intel_panel_use_ssc(dev_priv)) {
> - drm_dbg_kms(&dev_priv->drm,
> - "using SSC reference clock of %d kHz\n",
> - dev_priv->vbt.lvds_ssc_freq);
> - refclk = dev_priv->vbt.lvds_ssc_freq;
> - }
> -
> - if (intel_is_dual_link_lvds(dev_priv)) {
> - if (refclk == 100000)
> - limit = &ilk_limits_dual_lvds_100m;
> - else
> - limit = &ilk_limits_dual_lvds;
> - } else {
> - if (refclk == 100000)
> - limit = &ilk_limits_single_lvds_100m;
> - else
> - limit = &ilk_limits_single_lvds;
> - }
> - } else {
> - limit = &ilk_limits_dac;
> - }
> -
> - if (!crtc_state->clock_set &&
> - !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> - refclk, NULL, &crtc_state->dpll)) {
> - drm_err(&dev_priv->drm,
> - "Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> -
> - ilk_compute_dpll(crtc, crtc_state, NULL);
> -
> - if (!intel_reserve_shared_dplls(state, crtc, NULL)) {
> - drm_dbg_kms(&dev_priv->drm,
> - "failed to find PLL for pipe %c\n",
> - pipe_name(crtc->pipe));
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
> struct intel_link_m_n *m_n)
> {
> @@ -10519,29 +9209,6 @@ static bool ilk_get_pipe_config(struct intel_crtc *crtc,
> return ret;
> }
>
> -static int hsw_crtc_compute_clock(struct intel_crtc *crtc,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - struct intel_atomic_state *state =
> - to_intel_atomic_state(crtc_state->uapi.state);
> -
> - if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) ||
> - INTEL_GEN(dev_priv) >= 11) {
> - struct intel_encoder *encoder =
> - intel_get_crtc_new_encoder(state, crtc_state);
> -
> - if (!intel_reserve_shared_dplls(state, crtc, encoder)) {
> - drm_dbg_kms(&dev_priv->drm,
> - "failed to find PLL for pipe %c\n",
> - pipe_name(crtc->pipe));
> - return -EINVAL;
> - }
> - }
> -
> - return 0;
> -}
> -
> static void dg1_get_ddi_pll(struct drm_i915_private *dev_priv, enum port port,
> struct intel_crtc_state *pipe_config)
> {
> @@ -16476,69 +15143,27 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
> {
> intel_init_cdclk_hooks(dev_priv);
>
> + intel_dpll_init_clock_hook(dev_priv);
> +
> if (INTEL_GEN(dev_priv) >= 9) {
> dev_priv->display.get_pipe_config = hsw_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - skl_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock = hsw_crtc_compute_clock;
> dev_priv->display.crtc_enable = hsw_crtc_enable;
> dev_priv->display.crtc_disable = hsw_crtc_disable;
> } else if (HAS_DDI(dev_priv)) {
> dev_priv->display.get_pipe_config = hsw_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock =
> - hsw_crtc_compute_clock;
> dev_priv->display.crtc_enable = hsw_crtc_enable;
> dev_priv->display.crtc_disable = hsw_crtc_disable;
> } else if (HAS_PCH_SPLIT(dev_priv)) {
> dev_priv->display.get_pipe_config = ilk_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock =
> - ilk_crtc_compute_clock;
> dev_priv->display.crtc_enable = ilk_crtc_enable;
> dev_priv->display.crtc_disable = ilk_crtc_disable;
> - } else if (IS_CHERRYVIEW(dev_priv)) {
> - dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock = chv_crtc_compute_clock;
> - dev_priv->display.crtc_enable = valleyview_crtc_enable;
> - dev_priv->display.crtc_disable = i9xx_crtc_disable;
> - } else if (IS_VALLEYVIEW(dev_priv)) {
> + } else if (IS_CHERRYVIEW(dev_priv) ||
> + IS_VALLEYVIEW(dev_priv)) {
> dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock = vlv_crtc_compute_clock;
> dev_priv->display.crtc_enable = valleyview_crtc_enable;
> dev_priv->display.crtc_disable = i9xx_crtc_disable;
> - } else if (IS_G4X(dev_priv)) {
> - dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock;
> - dev_priv->display.crtc_enable = i9xx_crtc_enable;
> - dev_priv->display.crtc_disable = i9xx_crtc_disable;
> - } else if (IS_PINEVIEW(dev_priv)) {
> - dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock;
> - dev_priv->display.crtc_enable = i9xx_crtc_enable;
> - dev_priv->display.crtc_disable = i9xx_crtc_disable;
> - } else if (!IS_GEN(dev_priv, 2)) {
> - dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
> - dev_priv->display.crtc_enable = i9xx_crtc_enable;
> - dev_priv->display.crtc_disable = i9xx_crtc_disable;
> } else {
> dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
> - dev_priv->display.get_initial_plane_config =
> - i9xx_get_initial_plane_config;
> - dev_priv->display.crtc_compute_clock = i8xx_crtc_compute_clock;
> dev_priv->display.crtc_enable = i9xx_crtc_enable;
> dev_priv->display.crtc_disable = i9xx_crtc_disable;
> }
> @@ -16552,10 +15177,13 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
> dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
> }
>
> - if (INTEL_GEN(dev_priv) >= 9)
> + if (INTEL_GEN(dev_priv) >= 9) {
> dev_priv->display.commit_modeset_enables = skl_commit_modeset_enables;
> - else
> + dev_priv->display.get_initial_plane_config = skl_get_initial_plane_config;
> + } else {
> dev_priv->display.commit_modeset_enables = intel_commit_modeset_enables;
> + dev_priv->display.get_initial_plane_config = i9xx_get_initial_plane_config;
> + }
>
> }
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
> index 717b0e4160e9..376cec71b477 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -653,6 +653,9 @@ u32 intel_plane_compute_aligned_offset(int *x, int *y,
> int color_plane);
> int intel_plane_pin_fb(struct intel_plane_state *plane_state);
> void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state);
> +struct intel_encoder *
> +intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
> + const struct intel_crtc_state *crtc_state);
>
> /* modesetting */
> void intel_modeset_init_hw(struct drm_i915_private *i915);
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
> index dfa3966e5fa1..6d4ca5ebc320 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1811,4 +1811,9 @@ to_intel_frontbuffer(struct drm_framebuffer *fb)
> return fb ? to_intel_framebuffer(fb)->frontbuffer : NULL;
> }
>
> +static inline u32 i9xx_dpll_compute_fp(struct dpll *dpll)
> +{
> + return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
> +}
> +
> #endif /* __INTEL_DISPLAY_TYPES_H__ */
> diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
> new file mode 100644
> index 000000000000..5fd16bf5bebd
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/display/intel_dpll.c
> @@ -0,0 +1,1371 @@
> +// SPDX-License-Identifier: MIT
> +/*
> + * Copyright © 2020 Intel Corporation
> + */
> +#include <linux/kernel.h>
> +#include "intel_display_types.h"
> +#include "intel_display.h"
> +#include "intel_dpll.h"
> +#include "intel_lvds.h"
> +#include "intel_panel.h"
> +
> +static bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
> +{
> + if (dev_priv->params.panel_use_ssc >= 0)
> + return dev_priv->params.panel_use_ssc != 0;
> + return dev_priv->vbt.lvds_use_ssc
> + && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
> +}
> +
> +struct intel_limit {
> + struct {
> + int min, max;
> + } dot, vco, n, m, m1, m2, p, p1;
> +
> + struct {
> + int dot_limit;
> + int p2_slow, p2_fast;
> + } p2;
> +};
> +static const struct intel_limit intel_limits_i8xx_dac = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 908000, .max = 1512000 },
> + .n = { .min = 2, .max = 16 },
> + .m = { .min = 96, .max = 140 },
> + .m1 = { .min = 18, .max = 26 },
> + .m2 = { .min = 6, .max = 16 },
> + .p = { .min = 4, .max = 128 },
> + .p1 = { .min = 2, .max = 33 },
> + .p2 = { .dot_limit = 165000,
> + .p2_slow = 4, .p2_fast = 2 },
> +};
> +
> +static const struct intel_limit intel_limits_i8xx_dvo = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 908000, .max = 1512000 },
> + .n = { .min = 2, .max = 16 },
> + .m = { .min = 96, .max = 140 },
> + .m1 = { .min = 18, .max = 26 },
> + .m2 = { .min = 6, .max = 16 },
> + .p = { .min = 4, .max = 128 },
> + .p1 = { .min = 2, .max = 33 },
> + .p2 = { .dot_limit = 165000,
> + .p2_slow = 4, .p2_fast = 4 },
> +};
> +
> +static const struct intel_limit intel_limits_i8xx_lvds = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 908000, .max = 1512000 },
> + .n = { .min = 2, .max = 16 },
> + .m = { .min = 96, .max = 140 },
> + .m1 = { .min = 18, .max = 26 },
> + .m2 = { .min = 6, .max = 16 },
> + .p = { .min = 4, .max = 128 },
> + .p1 = { .min = 1, .max = 6 },
> + .p2 = { .dot_limit = 165000,
> + .p2_slow = 14, .p2_fast = 7 },
> +};
> +
> +static const struct intel_limit intel_limits_i9xx_sdvo = {
> + .dot = { .min = 20000, .max = 400000 },
> + .vco = { .min = 1400000, .max = 2800000 },
> + .n = { .min = 1, .max = 6 },
> + .m = { .min = 70, .max = 120 },
> + .m1 = { .min = 8, .max = 18 },
> + .m2 = { .min = 3, .max = 7 },
> + .p = { .min = 5, .max = 80 },
> + .p1 = { .min = 1, .max = 8 },
> + .p2 = { .dot_limit = 200000,
> + .p2_slow = 10, .p2_fast = 5 },
> +};
> +
> +static const struct intel_limit intel_limits_i9xx_lvds = {
> + .dot = { .min = 20000, .max = 400000 },
> + .vco = { .min = 1400000, .max = 2800000 },
> + .n = { .min = 1, .max = 6 },
> + .m = { .min = 70, .max = 120 },
> + .m1 = { .min = 8, .max = 18 },
> + .m2 = { .min = 3, .max = 7 },
> + .p = { .min = 7, .max = 98 },
> + .p1 = { .min = 1, .max = 8 },
> + .p2 = { .dot_limit = 112000,
> + .p2_slow = 14, .p2_fast = 7 },
> +};
> +
> +
> +static const struct intel_limit intel_limits_g4x_sdvo = {
> + .dot = { .min = 25000, .max = 270000 },
> + .vco = { .min = 1750000, .max = 3500000},
> + .n = { .min = 1, .max = 4 },
> + .m = { .min = 104, .max = 138 },
> + .m1 = { .min = 17, .max = 23 },
> + .m2 = { .min = 5, .max = 11 },
> + .p = { .min = 10, .max = 30 },
> + .p1 = { .min = 1, .max = 3},
> + .p2 = { .dot_limit = 270000,
> + .p2_slow = 10,
> + .p2_fast = 10
> + },
> +};
> +
> +static const struct intel_limit intel_limits_g4x_hdmi = {
> + .dot = { .min = 22000, .max = 400000 },
> + .vco = { .min = 1750000, .max = 3500000},
> + .n = { .min = 1, .max = 4 },
> + .m = { .min = 104, .max = 138 },
> + .m1 = { .min = 16, .max = 23 },
> + .m2 = { .min = 5, .max = 11 },
> + .p = { .min = 5, .max = 80 },
> + .p1 = { .min = 1, .max = 8},
> + .p2 = { .dot_limit = 165000,
> + .p2_slow = 10, .p2_fast = 5 },
> +};
> +
> +static const struct intel_limit intel_limits_g4x_single_channel_lvds = {
> + .dot = { .min = 20000, .max = 115000 },
> + .vco = { .min = 1750000, .max = 3500000 },
> + .n = { .min = 1, .max = 3 },
> + .m = { .min = 104, .max = 138 },
> + .m1 = { .min = 17, .max = 23 },
> + .m2 = { .min = 5, .max = 11 },
> + .p = { .min = 28, .max = 112 },
> + .p1 = { .min = 2, .max = 8 },
> + .p2 = { .dot_limit = 0,
> + .p2_slow = 14, .p2_fast = 14
> + },
> +};
> +
> +static const struct intel_limit intel_limits_g4x_dual_channel_lvds = {
> + .dot = { .min = 80000, .max = 224000 },
> + .vco = { .min = 1750000, .max = 3500000 },
> + .n = { .min = 1, .max = 3 },
> + .m = { .min = 104, .max = 138 },
> + .m1 = { .min = 17, .max = 23 },
> + .m2 = { .min = 5, .max = 11 },
> + .p = { .min = 14, .max = 42 },
> + .p1 = { .min = 2, .max = 6 },
> + .p2 = { .dot_limit = 0,
> + .p2_slow = 7, .p2_fast = 7
> + },
> +};
> +
> +static const struct intel_limit pnv_limits_sdvo = {
> + .dot = { .min = 20000, .max = 400000},
> + .vco = { .min = 1700000, .max = 3500000 },
> + /* Pineview's Ncounter is a ring counter */
> + .n = { .min = 3, .max = 6 },
> + .m = { .min = 2, .max = 256 },
> + /* Pineview only has one combined m divider, which we treat as m2. */
> + .m1 = { .min = 0, .max = 0 },
> + .m2 = { .min = 0, .max = 254 },
> + .p = { .min = 5, .max = 80 },
> + .p1 = { .min = 1, .max = 8 },
> + .p2 = { .dot_limit = 200000,
> + .p2_slow = 10, .p2_fast = 5 },
> +};
> +
> +static const struct intel_limit pnv_limits_lvds = {
> + .dot = { .min = 20000, .max = 400000 },
> + .vco = { .min = 1700000, .max = 3500000 },
> + .n = { .min = 3, .max = 6 },
> + .m = { .min = 2, .max = 256 },
> + .m1 = { .min = 0, .max = 0 },
> + .m2 = { .min = 0, .max = 254 },
> + .p = { .min = 7, .max = 112 },
> + .p1 = { .min = 1, .max = 8 },
> + .p2 = { .dot_limit = 112000,
> + .p2_slow = 14, .p2_fast = 14 },
> +};
> +
> +/* Ironlake / Sandybridge
> + *
> + * We calculate clock using (register_value + 2) for N/M1/M2, so here
> + * the range value for them is (actual_value - 2).
> + */
> +static const struct intel_limit ilk_limits_dac = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 1760000, .max = 3510000 },
> + .n = { .min = 1, .max = 5 },
> + .m = { .min = 79, .max = 127 },
> + .m1 = { .min = 12, .max = 22 },
> + .m2 = { .min = 5, .max = 9 },
> + .p = { .min = 5, .max = 80 },
> + .p1 = { .min = 1, .max = 8 },
> + .p2 = { .dot_limit = 225000,
> + .p2_slow = 10, .p2_fast = 5 },
> +};
> +
> +static const struct intel_limit ilk_limits_single_lvds = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 1760000, .max = 3510000 },
> + .n = { .min = 1, .max = 3 },
> + .m = { .min = 79, .max = 118 },
> + .m1 = { .min = 12, .max = 22 },
> + .m2 = { .min = 5, .max = 9 },
> + .p = { .min = 28, .max = 112 },
> + .p1 = { .min = 2, .max = 8 },
> + .p2 = { .dot_limit = 225000,
> + .p2_slow = 14, .p2_fast = 14 },
> +};
> +
> +static const struct intel_limit ilk_limits_dual_lvds = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 1760000, .max = 3510000 },
> + .n = { .min = 1, .max = 3 },
> + .m = { .min = 79, .max = 127 },
> + .m1 = { .min = 12, .max = 22 },
> + .m2 = { .min = 5, .max = 9 },
> + .p = { .min = 14, .max = 56 },
> + .p1 = { .min = 2, .max = 8 },
> + .p2 = { .dot_limit = 225000,
> + .p2_slow = 7, .p2_fast = 7 },
> +};
> +
> +/* LVDS 100mhz refclk limits. */
> +static const struct intel_limit ilk_limits_single_lvds_100m = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 1760000, .max = 3510000 },
> + .n = { .min = 1, .max = 2 },
> + .m = { .min = 79, .max = 126 },
> + .m1 = { .min = 12, .max = 22 },
> + .m2 = { .min = 5, .max = 9 },
> + .p = { .min = 28, .max = 112 },
> + .p1 = { .min = 2, .max = 8 },
> + .p2 = { .dot_limit = 225000,
> + .p2_slow = 14, .p2_fast = 14 },
> +};
> +
> +static const struct intel_limit ilk_limits_dual_lvds_100m = {
> + .dot = { .min = 25000, .max = 350000 },
> + .vco = { .min = 1760000, .max = 3510000 },
> + .n = { .min = 1, .max = 3 },
> + .m = { .min = 79, .max = 126 },
> + .m1 = { .min = 12, .max = 22 },
> + .m2 = { .min = 5, .max = 9 },
> + .p = { .min = 14, .max = 42 },
> + .p1 = { .min = 2, .max = 6 },
> + .p2 = { .dot_limit = 225000,
> + .p2_slow = 7, .p2_fast = 7 },
> +};
> +
> +static const struct intel_limit intel_limits_vlv = {
> + /*
> + * These are the data rate limits (measured in fast clocks)
> + * since those are the strictest limits we have. The fast
> + * clock and actual rate limits are more relaxed, so checking
> + * them would make no difference.
> + */
> + .dot = { .min = 25000 * 5, .max = 270000 * 5 },
> + .vco = { .min = 4000000, .max = 6000000 },
> + .n = { .min = 1, .max = 7 },
> + .m1 = { .min = 2, .max = 3 },
> + .m2 = { .min = 11, .max = 156 },
> + .p1 = { .min = 2, .max = 3 },
> + .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
> +};
> +
> +static const struct intel_limit intel_limits_chv = {
> + /*
> + * These are the data rate limits (measured in fast clocks)
> + * since those are the strictest limits we have. The fast
> + * clock and actual rate limits are more relaxed, so checking
> + * them would make no difference.
> + */
> + .dot = { .min = 25000 * 5, .max = 540000 * 5},
> + .vco = { .min = 4800000, .max = 6480000 },
> + .n = { .min = 1, .max = 1 },
> + .m1 = { .min = 2, .max = 2 },
> + .m2 = { .min = 24 << 22, .max = 175 << 22 },
> + .p1 = { .min = 2, .max = 4 },
> + .p2 = { .p2_slow = 1, .p2_fast = 14 },
> +};
> +
> +static const struct intel_limit intel_limits_bxt = {
> + /* FIXME: find real dot limits */
> + .dot = { .min = 0, .max = INT_MAX },
> + .vco = { .min = 4800000, .max = 6700000 },
> + .n = { .min = 1, .max = 1 },
> + .m1 = { .min = 2, .max = 2 },
> + /* FIXME: find real m2 limits */
> + .m2 = { .min = 2 << 22, .max = 255 << 22 },
> + .p1 = { .min = 2, .max = 4 },
> + .p2 = { .p2_slow = 1, .p2_fast = 20 },
> +};
> +
> +/*
> + * Platform specific helpers to calculate the port PLL loopback- (clock.m),
> + * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
> + * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
> + * The helpers' return value is the rate of the clock that is fed to the
> + * display engine's pipe which can be the above fast dot clock rate or a
> + * divided-down version of it.
> + */
> +/* m1 is reserved as 0 in Pineview, n is a ring counter */
> +int pnv_calc_dpll_params(int refclk, struct dpll *clock)
> +{
> + clock->m = clock->m2 + 2;
> + clock->p = clock->p1 * clock->p2;
> + if (WARN_ON(clock->n == 0 || clock->p == 0))
> + return 0;
> + clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
> + clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> +
> + return clock->dot;
> +}
> +
> +static u32 i9xx_dpll_compute_m(struct dpll *dpll)
> +{
> + return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
> +}
> +
> +int i9xx_calc_dpll_params(int refclk, struct dpll *clock)
> +{
> + clock->m = i9xx_dpll_compute_m(clock);
> + clock->p = clock->p1 * clock->p2;
> + if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
> + return 0;
> + clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
> + clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> +
> + return clock->dot;
> +}
> +
> +int vlv_calc_dpll_params(int refclk, struct dpll *clock)
> +{
> + clock->m = clock->m1 * clock->m2;
> + clock->p = clock->p1 * clock->p2;
> + if (WARN_ON(clock->n == 0 || clock->p == 0))
> + return 0;
> + clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
> + clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> +
> + return clock->dot / 5;
> +}
> +
> +int chv_calc_dpll_params(int refclk, struct dpll *clock)
> +{
> + clock->m = clock->m1 * clock->m2;
> + clock->p = clock->p1 * clock->p2;
> + if (WARN_ON(clock->n == 0 || clock->p == 0))
> + return 0;
> + clock->vco = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, clock->m),
> + clock->n << 22);
> + clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
> +
> + return clock->dot / 5;
> +}
> +
> +/*
> + * Returns whether the given set of divisors are valid for a given refclk with
> + * the given connectors.
> + */
> +static bool intel_pll_is_valid(struct drm_i915_private *dev_priv,
> + const struct intel_limit *limit,
> + const struct dpll *clock)
> +{
> + if (clock->n < limit->n.min || limit->n.max < clock->n)
> + return false;
> + if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
> + return false;
> + if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
> + return false;
> + if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
> + return false;
> +
> + if (!IS_PINEVIEW(dev_priv) && !IS_VALLEYVIEW(dev_priv) &&
> + !IS_CHERRYVIEW(dev_priv) && !IS_GEN9_LP(dev_priv))
> + if (clock->m1 <= clock->m2)
> + return false;
> +
> + if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
> + !IS_GEN9_LP(dev_priv)) {
> + if (clock->p < limit->p.min || limit->p.max < clock->p)
> + return false;
> + if (clock->m < limit->m.min || limit->m.max < clock->m)
> + return false;
> + }
> +
> + if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
> + return false;
> + /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
> + * connector, etc., rather than just a single range.
> + */
> + if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
> + return false;
> +
> + return true;
> +}
> +
> +static int
> +i9xx_select_p2_div(const struct intel_limit *limit,
> + const struct intel_crtc_state *crtc_state,
> + int target)
> +{
> + struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + /*
> + * For LVDS 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 (intel_is_dual_link_lvds(dev_priv))
> + return limit->p2.p2_fast;
> + else
> + return limit->p2.p2_slow;
> + } else {
> + if (target < limit->p2.dot_limit)
> + return limit->p2.p2_slow;
> + else
> + return limit->p2.p2_fast;
> + }
> +}
> +
> +/*
> + * 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.
> + *
> + * Target and reference clocks are specified in kHz.
> + *
> + * If match_clock is provided, then best_clock P divider must match the P
> + * divider from @match_clock used for LVDS downclocking.
> + */
> +static bool
> +i9xx_find_best_dpll(const struct intel_limit *limit,
> + struct intel_crtc_state *crtc_state,
> + int target, int refclk, struct dpll *match_clock,
> + struct dpll *best_clock)
> +{
> + struct drm_device *dev = crtc_state->uapi.crtc->dev;
> + struct dpll clock;
> + int err = target;
> +
> + memset(best_clock, 0, sizeof(*best_clock));
> +
> + clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
> +
> + for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
> + clock.m1++) {
> + for (clock.m2 = limit->m2.min;
> + clock.m2 <= limit->m2.max; clock.m2++) {
> + if (clock.m2 >= clock.m1)
> + break;
> + for (clock.n = limit->n.min;
> + clock.n <= limit->n.max; clock.n++) {
> + for (clock.p1 = limit->p1.min;
> + clock.p1 <= limit->p1.max; clock.p1++) {
> + int this_err;
> +
> + i9xx_calc_dpll_params(refclk, &clock);
> + if (!intel_pll_is_valid(to_i915(dev),
> + limit,
> + &clock))
> + continue;
> + if (match_clock &&
> + clock.p != match_clock->p)
> + continue;
> +
> + this_err = abs(clock.dot - target);
> + if (this_err < err) {
> + *best_clock = clock;
> + err = this_err;
> + }
> + }
> + }
> + }
> + }
> +
> + return (err != target);
> +}
> +
> +/*
> + * 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.
> + *
> + * Target and reference clocks are specified in kHz.
> + *
> + * If match_clock is provided, then best_clock P divider must match the P
> + * divider from @match_clock used for LVDS downclocking.
> + */
> +static bool
> +pnv_find_best_dpll(const struct intel_limit *limit,
> + struct intel_crtc_state *crtc_state,
> + int target, int refclk, struct dpll *match_clock,
> + struct dpll *best_clock)
> +{
> + struct drm_device *dev = crtc_state->uapi.crtc->dev;
> + struct dpll clock;
> + int err = target;
> +
> + memset(best_clock, 0, sizeof(*best_clock));
> +
> + clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
> +
> + for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
> + clock.m1++) {
> + for (clock.m2 = limit->m2.min;
> + clock.m2 <= limit->m2.max; clock.m2++) {
> + for (clock.n = limit->n.min;
> + clock.n <= limit->n.max; clock.n++) {
> + for (clock.p1 = limit->p1.min;
> + clock.p1 <= limit->p1.max; clock.p1++) {
> + int this_err;
> +
> + pnv_calc_dpll_params(refclk, &clock);
> + if (!intel_pll_is_valid(to_i915(dev),
> + limit,
> + &clock))
> + continue;
> + if (match_clock &&
> + clock.p != match_clock->p)
> + continue;
> +
> + this_err = abs(clock.dot - target);
> + if (this_err < err) {
> + *best_clock = clock;
> + err = this_err;
> + }
> + }
> + }
> + }
> + }
> +
> + return (err != target);
> +}
> +
> +/*
> + * 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.
> + *
> + * Target and reference clocks are specified in kHz.
> + *
> + * If match_clock is provided, then best_clock P divider must match the P
> + * divider from @match_clock used for LVDS downclocking.
> + */
> +static bool
> +g4x_find_best_dpll(const struct intel_limit *limit,
> + struct intel_crtc_state *crtc_state,
> + int target, int refclk, struct dpll *match_clock,
> + struct dpll *best_clock)
> +{
> + struct drm_device *dev = crtc_state->uapi.crtc->dev;
> + struct dpll clock;
> + int max_n;
> + bool found = false;
> + /* approximately equals target * 0.00585 */
> + int err_most = (target >> 8) + (target >> 9);
> +
> + memset(best_clock, 0, sizeof(*best_clock));
> +
> + clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
> +
> + 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 */
> + 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;
> +
> + i9xx_calc_dpll_params(refclk, &clock);
> + if (!intel_pll_is_valid(to_i915(dev),
> + limit,
> + &clock))
> + continue;
> +
> + this_err = abs(clock.dot - target);
> + if (this_err < err_most) {
> + *best_clock = clock;
> + err_most = this_err;
> + max_n = clock.n;
> + found = true;
> + }
> + }
> + }
> + }
> + }
> + return found;
> +}
> +
> +/*
> + * Check if the calculated PLL configuration is more optimal compared to the
> + * best configuration and error found so far. Return the calculated error.
> + */
> +static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
> + const struct dpll *calculated_clock,
> + const struct dpll *best_clock,
> + unsigned int best_error_ppm,
> + unsigned int *error_ppm)
> +{
> + /*
> + * For CHV ignore the error and consider only the P value.
> + * Prefer a bigger P value based on HW requirements.
> + */
> + if (IS_CHERRYVIEW(to_i915(dev))) {
> + *error_ppm = 0;
> +
> + return calculated_clock->p > best_clock->p;
> + }
> +
> + if (drm_WARN_ON_ONCE(dev, !target_freq))
> + return false;
> +
> + *error_ppm = div_u64(1000000ULL *
> + abs(target_freq - calculated_clock->dot),
> + target_freq);
> + /*
> + * Prefer a better P value over a better (smaller) error if the error
> + * is small. Ensure this preference for future configurations too by
> + * setting the error to 0.
> + */
> + if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
> + *error_ppm = 0;
> +
> + return true;
> + }
> +
> + return *error_ppm + 10 < best_error_ppm;
> +}
> +
> +/*
> + * 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
> +vlv_find_best_dpll(const struct intel_limit *limit,
> + struct intel_crtc_state *crtc_state,
> + int target, int refclk, struct dpll *match_clock,
> + struct dpll *best_clock)
> +{
> + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> + struct drm_device *dev = crtc->base.dev;
> + struct dpll clock;
> + unsigned int bestppm = 1000000;
> + /* min update 19.2 MHz */
> + int max_n = min(limit->n.max, refclk / 19200);
> + bool found = false;
> +
> + target *= 5; /* fast clock */
> +
> + memset(best_clock, 0, sizeof(*best_clock));
> +
> + /* based on hardware requirement, prefer smaller n to precision */
> + for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
> + for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
> + for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
> + clock.p2 -= clock.p2 > 10 ? 2 : 1) {
> + clock.p = clock.p1 * clock.p2;
> + /* based on hardware requirement, prefer bigger m1,m2 values */
> + for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
> + unsigned int ppm;
> +
> + clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
> + refclk * clock.m1);
> +
> + vlv_calc_dpll_params(refclk, &clock);
> +
> + if (!intel_pll_is_valid(to_i915(dev),
> + limit,
> + &clock))
> + continue;
> +
> + if (!vlv_PLL_is_optimal(dev, target,
> + &clock,
> + best_clock,
> + bestppm, &ppm))
> + continue;
> +
> + *best_clock = clock;
> + bestppm = ppm;
> + found = true;
> + }
> + }
> + }
> + }
> +
> + return found;
> +}
> +
> +/*
> + * 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
> +chv_find_best_dpll(const struct intel_limit *limit,
> + struct intel_crtc_state *crtc_state,
> + int target, int refclk, struct dpll *match_clock,
> + struct dpll *best_clock)
> +{
> + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> + struct drm_device *dev = crtc->base.dev;
> + unsigned int best_error_ppm;
> + struct dpll clock;
> + u64 m2;
> + int found = false;
> +
> + memset(best_clock, 0, sizeof(*best_clock));
> + best_error_ppm = 1000000;
> +
> + /*
> + * Based on hardware doc, the n always set to 1, and m1 always
> + * set to 2. If requires to support 200Mhz refclk, we need to
> + * revisit this because n may not 1 anymore.
> + */
> + clock.n = 1;
> + clock.m1 = 2;
> + target *= 5; /* fast clock */
> +
> + for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
> + for (clock.p2 = limit->p2.p2_fast;
> + clock.p2 >= limit->p2.p2_slow;
> + clock.p2 -= clock.p2 > 10 ? 2 : 1) {
> + unsigned int error_ppm;
> +
> + clock.p = clock.p1 * clock.p2;
> +
> + m2 = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(target, clock.p * clock.n) << 22,
> + refclk * clock.m1);
> +
> + if (m2 > INT_MAX/clock.m1)
> + continue;
> +
> + clock.m2 = m2;
> +
> + chv_calc_dpll_params(refclk, &clock);
> +
> + if (!intel_pll_is_valid(to_i915(dev), limit, &clock))
> + continue;
> +
> + if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
> + best_error_ppm, &error_ppm))
> + continue;
> +
> + *best_clock = clock;
> + best_error_ppm = error_ppm;
> + found = true;
> + }
> + }
> +
> + return found;
> +}
> +
> +bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
> + struct dpll *best_clock)
> +{
> + int refclk = 100000;
> + const struct intel_limit *limit = &intel_limits_bxt;
> +
> + return chv_find_best_dpll(limit, crtc_state,
> + crtc_state->port_clock, refclk,
> + NULL, best_clock);
> +}
> +
> +static u32 pnv_dpll_compute_fp(struct dpll *dpll)
> +{
> + return (1 << dpll->n) << 16 | dpll->m2;
> +}
> +
> +static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state,
> + struct dpll *reduced_clock)
> +{
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> + u32 fp, fp2 = 0;
> +
> + if (IS_PINEVIEW(dev_priv)) {
> + fp = pnv_dpll_compute_fp(&crtc_state->dpll);
> + if (reduced_clock)
> + fp2 = pnv_dpll_compute_fp(reduced_clock);
> + } else {
> + fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
> + if (reduced_clock)
> + fp2 = i9xx_dpll_compute_fp(reduced_clock);
> + }
> +
> + crtc_state->dpll_hw_state.fp0 = fp;
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> + reduced_clock) {
> + crtc_state->dpll_hw_state.fp1 = fp2;
> + } else {
> + crtc_state->dpll_hw_state.fp1 = fp;
> + }
> +}
> +
> +static void i9xx_compute_dpll(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state,
> + struct dpll *reduced_clock)
> +{
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> + u32 dpll;
> + struct dpll *clock = &crtc_state->dpll;
> +
> + i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
> +
> + dpll = DPLL_VGA_MODE_DIS;
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
> + dpll |= DPLLB_MODE_LVDS;
> + else
> + dpll |= DPLLB_MODE_DAC_SERIAL;
> +
> + if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
> + IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
> + dpll |= (crtc_state->pixel_multiplier - 1)
> + << SDVO_MULTIPLIER_SHIFT_HIRES;
> + }
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
> + intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
> + dpll |= DPLL_SDVO_HIGH_SPEED;
> +
> + if (intel_crtc_has_dp_encoder(crtc_state))
> + dpll |= DPLL_SDVO_HIGH_SPEED;
> +
> + /* compute bitmask from p1 value */
> + if (IS_PINEVIEW(dev_priv))
> + dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
> + else {
> + dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> + if (IS_G4X(dev_priv) && reduced_clock)
> + dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
> + }
> + switch (clock->p2) {
> + case 5:
> + dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
> + break;
> + case 7:
> + dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
> + break;
> + case 10:
> + dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
> + break;
> + case 14:
> + dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
> + break;
> + }
> + if (INTEL_GEN(dev_priv) >= 4)
> + dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
> +
> + if (crtc_state->sdvo_tv_clock)
> + dpll |= PLL_REF_INPUT_TVCLKINBC;
> + else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> + intel_panel_use_ssc(dev_priv))
> + dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
> + else
> + dpll |= PLL_REF_INPUT_DREFCLK;
> +
> + dpll |= DPLL_VCO_ENABLE;
> + crtc_state->dpll_hw_state.dpll = dpll;
> +
> + if (INTEL_GEN(dev_priv) >= 4) {
> + u32 dpll_md = (crtc_state->pixel_multiplier - 1)
> + << DPLL_MD_UDI_MULTIPLIER_SHIFT;
> + crtc_state->dpll_hw_state.dpll_md = dpll_md;
> + }
> +}
> +
> +static void i8xx_compute_dpll(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state,
> + struct dpll *reduced_clock)
> +{
> + struct drm_device *dev = crtc->base.dev;
> + struct drm_i915_private *dev_priv = to_i915(dev);
> + u32 dpll;
> + struct dpll *clock = &crtc_state->dpll;
> +
> + i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
> +
> + dpll = DPLL_VGA_MODE_DIS;
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> + } else {
> + if (clock->p1 == 2)
> + dpll |= PLL_P1_DIVIDE_BY_TWO;
> + else
> + dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> + if (clock->p2 == 4)
> + dpll |= PLL_P2_DIVIDE_BY_4;
> + }
> +
> + /*
> + * Bspec:
> + * "[Almador Errata}: For the correct operation of the muxed DVO pins
> + * (GDEVSELB/I2Cdata, GIRDBY/I2CClk) and (GFRAMEB/DVI_Data,
> + * GTRDYB/DVI_Clk): Bit 31 (DPLL VCO Enable) and Bit 30 (2X Clock
> + * Enable) must be set to “1” in both the DPLL A Control Register
> + * (06014h-06017h) and DPLL B Control Register (06018h-0601Bh)."
> + *
> + * For simplicity We simply keep both bits always enabled in
> + * both DPLLS. The spec says we should disable the DVO 2X clock
> + * when not needed, but this seems to work fine in practice.
> + */
> + if (IS_I830(dev_priv) ||
> + intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO))
> + dpll |= DPLL_DVO_2X_MODE;
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> + intel_panel_use_ssc(dev_priv))
> + dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
> + else
> + dpll |= PLL_REF_INPUT_DREFCLK;
> +
> + dpll |= DPLL_VCO_ENABLE;
> + crtc_state->dpll_hw_state.dpll = dpll;
> +}
> +
> +static int hsw_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> + struct intel_atomic_state *state =
> + to_intel_atomic_state(crtc_state->uapi.state);
> +
> + if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) ||
> + INTEL_GEN(dev_priv) >= 11) {
> + struct intel_encoder *encoder =
> + intel_get_crtc_new_encoder(state, crtc_state);
> +
> + if (!intel_reserve_shared_dplls(state, crtc, encoder)) {
> + drm_dbg_kms(&dev_priv->drm,
> + "failed to find PLL for pipe %c\n",
> + pipe_name(crtc->pipe));
> + return -EINVAL;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static bool ilk_needs_fb_cb_tune(struct dpll *dpll, int factor)
> +{
> + return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
> +}
> +
> +
> +static void ilk_compute_dpll(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state,
> + struct dpll *reduced_clock)
> +{
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> + u32 dpll, fp, fp2;
> + int factor;
> +
> + /* Enable autotuning of the PLL clock (if permissible) */
> + factor = 21;
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if ((intel_panel_use_ssc(dev_priv) &&
> + dev_priv->vbt.lvds_ssc_freq == 100000) ||
> + (HAS_PCH_IBX(dev_priv) &&
> + intel_is_dual_link_lvds(dev_priv)))
> + factor = 25;
> + } else if (crtc_state->sdvo_tv_clock) {
> + factor = 20;
> + }
> +
> + fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
> +
> + if (ilk_needs_fb_cb_tune(&crtc_state->dpll, factor))
> + fp |= FP_CB_TUNE;
> +
> + if (reduced_clock) {
> + fp2 = i9xx_dpll_compute_fp(reduced_clock);
> +
> + if (reduced_clock->m < factor * reduced_clock->n)
> + fp2 |= FP_CB_TUNE;
> + } else {
> + fp2 = fp;
> + }
> +
> + dpll = 0;
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
> + dpll |= DPLLB_MODE_LVDS;
> + else
> + dpll |= DPLLB_MODE_DAC_SERIAL;
> +
> + dpll |= (crtc_state->pixel_multiplier - 1)
> + << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
> + intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
> + dpll |= DPLL_SDVO_HIGH_SPEED;
> +
> + if (intel_crtc_has_dp_encoder(crtc_state))
> + dpll |= DPLL_SDVO_HIGH_SPEED;
> +
> + /*
> + * The high speed IO clock is only really required for
> + * SDVO/HDMI/DP, but we also enable it for CRT to make it
> + * possible to share the DPLL between CRT and HDMI. Enabling
> + * the clock needlessly does no real harm, except use up a
> + * bit of power potentially.
> + *
> + * We'll limit this to IVB with 3 pipes, since it has only two
> + * DPLLs and so DPLL sharing is the only way to get three pipes
> + * driving PCH ports at the same time. On SNB we could do this,
> + * and potentially avoid enabling the second DPLL, but it's not
> + * clear if it''s a win or loss power wise. No point in doing
> + * this on ILK at all since it has a fixed DPLL<->pipe mapping.
> + */
> + if (INTEL_NUM_PIPES(dev_priv) == 3 &&
> + intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
> + dpll |= DPLL_SDVO_HIGH_SPEED;
> +
> + /* compute bitmask from p1 value */
> + dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
> + /* also FPA1 */
> + dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
> +
> + switch (crtc_state->dpll.p2) {
> + case 5:
> + dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
> + break;
> + case 7:
> + dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
> + break;
> + case 10:
> + dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
> + break;
> + case 14:
> + dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
> + break;
> + }
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> + intel_panel_use_ssc(dev_priv))
> + dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
> + else
> + dpll |= PLL_REF_INPUT_DREFCLK;
> +
> + dpll |= DPLL_VCO_ENABLE;
> +
> + crtc_state->dpll_hw_state.dpll = dpll;
> + crtc_state->dpll_hw_state.fp0 = fp;
> + crtc_state->dpll_hw_state.fp1 = fp2;
> +}
> +
> +static int ilk_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> + struct intel_atomic_state *state =
> + to_intel_atomic_state(crtc_state->uapi.state);
> + const struct intel_limit *limit;
> + int refclk = 120000;
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
> + if (!crtc_state->has_pch_encoder)
> + return 0;
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if (intel_panel_use_ssc(dev_priv)) {
> + drm_dbg_kms(&dev_priv->drm,
> + "using SSC reference clock of %d kHz\n",
> + dev_priv->vbt.lvds_ssc_freq);
> + refclk = dev_priv->vbt.lvds_ssc_freq;
> + }
> +
> + if (intel_is_dual_link_lvds(dev_priv)) {
> + if (refclk == 100000)
> + limit = &ilk_limits_dual_lvds_100m;
> + else
> + limit = &ilk_limits_dual_lvds;
> + } else {
> + if (refclk == 100000)
> + limit = &ilk_limits_single_lvds_100m;
> + else
> + limit = &ilk_limits_single_lvds;
> + }
> + } else {
> + limit = &ilk_limits_dac;
> + }
> +
> + if (!crtc_state->clock_set &&
> + !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + drm_err(&dev_priv->drm,
> + "Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> + }
> +
> + ilk_compute_dpll(crtc, crtc_state, NULL);
> +
> + if (!intel_reserve_shared_dplls(state, crtc, NULL)) {
> + drm_dbg_kms(&dev_priv->drm,
> + "failed to find PLL for pipe %c\n",
> + pipe_name(crtc->pipe));
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +void vlv_compute_dpll(struct intel_crtc *crtc,
> + struct intel_crtc_state *pipe_config)
> +{
> + pipe_config->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV |
> + DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
> + if (crtc->pipe != PIPE_A)
> + pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
> +
> + /* DPLL not used with DSI, but still need the rest set up */
> + if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
> + pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE |
> + DPLL_EXT_BUFFER_ENABLE_VLV;
> +
> + pipe_config->dpll_hw_state.dpll_md =
> + (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
> +}
> +
> +void chv_compute_dpll(struct intel_crtc *crtc,
> + struct intel_crtc_state *pipe_config)
> +{
> + pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
> + DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
> + if (crtc->pipe != PIPE_A)
> + pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
> +
> + /* DPLL not used with DSI, but still need the rest set up */
> + if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
> + pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE;
> +
> + pipe_config->dpll_hw_state.dpll_md =
> + (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
> +}
> +
> +static int chv_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + int refclk = 100000;
> + const struct intel_limit *limit = &intel_limits_chv;
> + struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + if (!crtc_state->clock_set &&
> + !chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + drm_err(&i915->drm, "Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> + }
> +
> + chv_compute_dpll(crtc, crtc_state);
> +
> + return 0;
> +}
> +
> +static int vlv_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + int refclk = 100000;
> + const struct intel_limit *limit = &intel_limits_vlv;
> + struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + if (!crtc_state->clock_set &&
> + !vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + drm_err(&i915->drm, "Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> + }
> +
> + vlv_compute_dpll(crtc, crtc_state);
> +
> + return 0;
> +}
> +
> +static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> + const struct intel_limit *limit;
> + int refclk = 96000;
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if (intel_panel_use_ssc(dev_priv)) {
> + refclk = dev_priv->vbt.lvds_ssc_freq;
> + drm_dbg_kms(&dev_priv->drm,
> + "using SSC reference clock of %d kHz\n",
> + refclk);
> + }
> +
> + if (intel_is_dual_link_lvds(dev_priv))
> + limit = &intel_limits_g4x_dual_channel_lvds;
> + else
> + limit = &intel_limits_g4x_single_channel_lvds;
> + } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
> + intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
> + limit = &intel_limits_g4x_hdmi;
> + } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO)) {
> + limit = &intel_limits_g4x_sdvo;
> + } else {
> + /* The option is for other outputs */
> + limit = &intel_limits_i9xx_sdvo;
> + }
> +
> + if (!crtc_state->clock_set &&
> + !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + drm_err(&dev_priv->drm,
> + "Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> + }
> +
> + i9xx_compute_dpll(crtc, crtc_state, NULL);
> +
> + return 0;
> +}
> +
> +static int pnv_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_device *dev = crtc->base.dev;
> + struct drm_i915_private *dev_priv = to_i915(dev);
> + const struct intel_limit *limit;
> + int refclk = 96000;
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if (intel_panel_use_ssc(dev_priv)) {
> + refclk = dev_priv->vbt.lvds_ssc_freq;
> + drm_dbg_kms(&dev_priv->drm,
> + "using SSC reference clock of %d kHz\n",
> + refclk);
> + }
> +
> + limit = &pnv_limits_lvds;
> + } else {
> + limit = &pnv_limits_sdvo;
> + }
> +
> + if (!crtc_state->clock_set &&
> + !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + drm_err(&dev_priv->drm,
> + "Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> + }
> +
> + i9xx_compute_dpll(crtc, crtc_state, NULL);
> +
> + return 0;
> +}
> +
> +static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_device *dev = crtc->base.dev;
> + struct drm_i915_private *dev_priv = to_i915(dev);
> + const struct intel_limit *limit;
> + int refclk = 96000;
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if (intel_panel_use_ssc(dev_priv)) {
> + refclk = dev_priv->vbt.lvds_ssc_freq;
> + drm_dbg_kms(&dev_priv->drm,
> + "using SSC reference clock of %d kHz\n",
> + refclk);
> + }
> +
> + limit = &intel_limits_i9xx_lvds;
> + } else {
> + limit = &intel_limits_i9xx_sdvo;
> + }
> +
> + if (!crtc_state->clock_set &&
> + !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + drm_err(&dev_priv->drm,
> + "Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> + }
> +
> + i9xx_compute_dpll(crtc, crtc_state, NULL);
> +
> + return 0;
> +}
> +
> +static int i8xx_crtc_compute_clock(struct intel_crtc *crtc,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_device *dev = crtc->base.dev;
> + struct drm_i915_private *dev_priv = to_i915(dev);
> + const struct intel_limit *limit;
> + int refclk = 48000;
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if (intel_panel_use_ssc(dev_priv)) {
> + refclk = dev_priv->vbt.lvds_ssc_freq;
> + drm_dbg_kms(&dev_priv->drm,
> + "using SSC reference clock of %d kHz\n",
> + refclk);
> + }
> +
> + limit = &intel_limits_i8xx_lvds;
> + } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO)) {
> + limit = &intel_limits_i8xx_dvo;
> + } else {
> + limit = &intel_limits_i8xx_dac;
> + }
> +
> + if (!crtc_state->clock_set &&
> + !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + drm_err(&dev_priv->drm,
> + "Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> + }
> +
> + i8xx_compute_dpll(crtc, crtc_state, NULL);
> +
> + return 0;
> +}
> +
> +void
> +intel_dpll_init_clock_hook(struct drm_i915_private *dev_priv)
> +{
> + if (INTEL_GEN(dev_priv) >= 9 || HAS_DDI(dev_priv))
> + dev_priv->display.crtc_compute_clock = hsw_crtc_compute_clock;
> + else if (HAS_PCH_SPLIT(dev_priv))
> + dev_priv->display.crtc_compute_clock = ilk_crtc_compute_clock;
> + else if (IS_CHERRYVIEW(dev_priv))
> + dev_priv->display.crtc_compute_clock = chv_crtc_compute_clock;
> + else if (IS_VALLEYVIEW(dev_priv))
> + dev_priv->display.crtc_compute_clock = vlv_crtc_compute_clock;
> + else if (IS_G4X(dev_priv))
> + dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock;
> + else if (IS_PINEVIEW(dev_priv))
> + dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock;
> + else if (!IS_GEN(dev_priv, 2))
> + dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
> + else
> + dev_priv->display.crtc_compute_clock = i8xx_crtc_compute_clock;
> +}
> diff --git a/drivers/gpu/drm/i915/display/intel_dpll.h b/drivers/gpu/drm/i915/display/intel_dpll.h
> new file mode 100644
> index 000000000000..35f752399a48
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/display/intel_dpll.h
> @@ -0,0 +1,22 @@
> +/* SPDX-License-Identifier: MIT */
> +/*
> + * Copyright © 2020 Intel Corporation
> + */
> +
> +#ifndef _INTEL_DPLL_H_
> +#define _INTEL_DPLL_H_
> +
> +struct dpll;
> +struct intel_crtc;
> +struct intel_crtc_state;
> +
> +void intel_dpll_init_clock_hook(struct drm_i915_private *dev_priv);
> +int vlv_calc_dpll_params(int refclk, struct dpll *clock);
> +int pnv_calc_dpll_params(int refclk, struct dpll *clock);
> +int i9xx_calc_dpll_params(int refclk, struct dpll *clock);
> +void vlv_compute_dpll(struct intel_crtc *crtc,
> + struct intel_crtc_state *pipe_config);
> +void chv_compute_dpll(struct intel_crtc *crtc,
> + struct intel_crtc_state *pipe_config);
> +
> +#endif
--
Jani Nikula, Intel Open Source Graphics Center
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