On Mon, Mar 21, 2016 at 06:00:16PM +0200, Ander Conselvan de Oliveira wrote:
> Split a pnv_crtc_compute_clock(), so the differences between platforms
> become more obvious.
>
> With this, there are no more users of intel_limit() or the ->find_dpll()
> hook, so get rid of them.
>
> Signed-off-by: Ander Conselvan de Oliveira
> <ander.conselvan.de.olive...@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 18 -----
> drivers/gpu/drm/i915/intel_display.c | 134
> +++++++++++++++++++++--------------
> 2 files changed, 79 insertions(+), 73 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index efca534..83ee8d7 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -575,24 +575,6 @@ struct dpll;
> struct drm_i915_display_funcs {
> int (*get_display_clock_speed)(struct drm_device *dev);
> int (*get_fifo_size)(struct drm_device *dev, int plane);
> - /**
> - * find_dpll() - Find the best values for the PLL
> - * @limit: limits for the PLL
> - * @crtc: current CRTC
> - * @target: target frequency in kHz
> - * @refclk: reference clock frequency in kHz
> - * @match_clock: if provided, @best_clock P divider must
> - * match the P divider from @match_clock
> - * used for LVDS downclocking
> - * @best_clock: best PLL values found
> - *
> - * Returns true on success, false on failure.
> - */
> - bool (*find_dpll)(const struct intel_limit *limit,
> - struct intel_crtc_state *crtc_state,
> - int target, int refclk,
> - struct dpll *match_clock,
> - struct dpll *best_clock);
> int (*compute_pipe_wm)(struct intel_crtc_state *cstate);
> int (*compute_intermediate_wm)(struct drm_device *dev,
> struct intel_crtc *intel_crtc,
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index 552fd4c..4d7c29a 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -566,33 +566,6 @@ static bool intel_pipe_will_have_type(const struct
> intel_crtc_state *crtc_state,
> return false;
> }
>
> -static const intel_limit_t *
> -intel_limit(struct intel_crtc_state *crtc_state, int refclk)
> -{
> - struct drm_device *dev = crtc_state->base.crtc->dev;
> - const intel_limit_t *limit;
> -
> - if (IS_BROXTON(dev) || IS_CHERRYVIEW(dev) || IS_VALLEYVIEW(dev) ||
> - HAS_PCH_SPLIT(dev) || IS_G4X(dev) || IS_GEN2(dev))
> - limit = NULL;
> -
> - if (IS_PINEVIEW(dev)) {
> - if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
> - limit = &intel_limits_pineview_lvds;
> - else
> - limit = &intel_limits_pineview_sdvo;
> - } else if (!IS_GEN2(dev)) {
> - if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
> - limit = &intel_limits_i9xx_lvds;
> - else
> - limit = &intel_limits_i9xx_sdvo;
> - }
> -
> - WARN_ON(limit == NULL);
> -
> - return limit;
> -}
> -
> /*
> * Platform specific helpers to calculate the port PLL loopback- (clock.m),
> * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
> @@ -723,6 +696,16 @@ i9xx_select_p2_div(const intel_limit_t *limit,
> }
> }
>
> +/*
> + * 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 intel_limit_t *limit,
> struct intel_crtc_state *crtc_state,
> @@ -770,6 +753,16 @@ i9xx_find_best_dpll(const intel_limit_t *limit,
> 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 intel_limit_t *limit,
> struct intel_crtc_state *crtc_state,
> @@ -819,6 +812,11 @@ pnv_find_best_dpll(const intel_limit_t *limit,
> * 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 intel_limit_t *limit,
> @@ -7904,43 +7902,67 @@ static int g4x_crtc_compute_clock(struct intel_crtc
> *crtc,
> 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 = dev->dev_private;
> + const intel_limit_t *limit;
> + int refclk = 96000;
> +
> + memset(&crtc_state->dpll_hw_state, 0,
> + sizeof(crtc_state->dpll_hw_state));
> +
> + if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if (intel_panel_use_ssc(dev_priv)) {
> + refclk = dev_priv->vbt.lvds_ssc_freq;
> + DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
> refclk);
> + }
> +
> + limit = &intel_limits_pineview_lvds;
> + } else {
> + limit = &intel_limits_pineview_sdvo;
> + }
> +
> + if (!crtc_state->clock_set &&
> + !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + DRM_ERROR("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 = dev->dev_private;
> - bool ok;
> const intel_limit_t *limit;
> int refclk = 96000;
>
> memset(&crtc_state->dpll_hw_state, 0,
> sizeof(crtc_state->dpll_hw_state));
>
> - if (crtc_state->has_dsi_encoder)
> - return 0;
> + if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
> + if (intel_panel_use_ssc(dev_priv)) {
> + refclk = dev_priv->vbt.lvds_ssc_freq;
> + DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
> refclk);
> + }
>
> - if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
> - intel_panel_use_ssc(dev_priv)) {
> - refclk = dev_priv->vbt.lvds_ssc_freq;
> - DRM_DEBUG_KMS("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) {
> - /*
> - * Returns a set of divisors for the desired target clock with
> - * the given refclk, or FALSE. The returned values represent
> - * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
> - * 2) / p1 / p2.
> - */
> - limit = intel_limit(crtc_state, refclk);
> - ok = dev_priv->display.find_dpll(limit, crtc_state,
> - crtc_state->port_clock,
> - refclk, NULL,
> - &crtc_state->dpll);
> - if (!ok) {
> - DRM_ERROR("Couldn't find PLL settings for mode!\n");
> - return -EINVAL;
> - }
> + if (!crtc_state->clock_set &&
> + !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
> + refclk, NULL, &crtc_state->dpll)) {
> + DRM_ERROR("Couldn't find PLL settings for mode!\n");
> + return -EINVAL;
> }
>
> i9xx_compute_dpll(crtc, crtc_state, NULL);
> @@ -14925,11 +14947,6 @@ static const struct drm_mode_config_funcs
> intel_mode_funcs = {
> */
> void intel_init_display_hooks(struct drm_i915_private *dev_priv)
> {
> - if (IS_PINEVIEW(dev_priv))
> - dev_priv->display.find_dpll = pnv_find_best_dpll;
> - else
> - dev_priv->display.find_dpll = i9xx_find_best_dpll;
> -
> if (INTEL_INFO(dev_priv)->gen >= 9) {
> dev_priv->display.get_pipe_config = haswell_get_pipe_config;
> dev_priv->display.get_initial_plane_config =
> @@ -14975,6 +14992,13 @@ void intel_init_display_hooks(struct
> drm_i915_private *dev_priv)
> 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_GEN2(dev_priv)) {
> dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
> dev_priv->display.get_initial_plane_config =
> --
> 2.4.3
>
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> Intel-gfx@lists.freedesktop.org
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--
Ville Syrjälä
Intel OTC
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