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drm/i915: Split PNV version of crtc_compute_clock()

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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.oliveira@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1458576016-30348-16-git-send-email-ander.conselvan.de.oliveira@intel.com
This commit is contained in:
Ander Conselvan de Oliveira 2016-03-21 18:00:16 +02:00
parent 19ec669309
commit 70e8aa2156
2 changed files with 80 additions and 74 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
drivers/gpu/drm/i915/i915_drv.h
View file

@ -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,

136
drivers/gpu/drm/i915/intel_display.c
View file

@ -564,33 +564,6 @@ 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
@ -721,6 +694,16 @@ 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,
@ -768,6 +751,16 @@ 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,
@ -817,6 +810,11 @@ 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,
@ -7849,43 +7847,67 @@ static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
return 0;
}
static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
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;
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_pineview_lvds;
} else {
limit = &intel_limits_pineview_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 &&
!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;
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_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_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
@ -14800,11 +14822,6 @@ 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 =
@ -14850,6 +14867,13 @@ 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 =