leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/i915: Deduplicate PPS register retrieval

Browse Source 
No functional change.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466084243-5388-3-git-send-email-imre.deak@intel.com
This commit is contained in:
Imre Deak 2016-06-16 16:37:21 +03:00
parent 7859799637
commit 8e8232d518
1 changed files with 65 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

131
drivers/gpu/drm/i915/intel_dp.c
View File

@ -571,30 +571,64 @@ void intel_power_sequencer_reset(struct drm_i915_private *dev_priv)
}
}
struct pps_registers {
i915_reg_t pp_ctrl;
i915_reg_t pp_stat;
i915_reg_t pp_on;
i915_reg_t pp_off;
i915_reg_t pp_div;
};
static void intel_pps_get_registers(struct drm_i915_private *dev_priv,
struct intel_dp *intel_dp,
struct pps_registers *regs)
{
memset(regs, 0, sizeof(*regs));
if (IS_BROXTON(dev_priv)) {
int idx = bxt_power_sequencer_idx(intel_dp);
regs->pp_ctrl = BXT_PP_CONTROL(idx);
regs->pp_stat = BXT_PP_STATUS(idx);
regs->pp_on = BXT_PP_ON_DELAYS(idx);
regs->pp_off = BXT_PP_OFF_DELAYS(idx);
} else if (HAS_PCH_SPLIT(dev_priv)) {
regs->pp_ctrl = PCH_PP_CONTROL;
regs->pp_stat = PCH_PP_STATUS;
regs->pp_on = PCH_PP_ON_DELAYS;
regs->pp_off = PCH_PP_OFF_DELAYS;
regs->pp_div = PCH_PP_DIVISOR;
} else {
enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
regs->pp_ctrl = VLV_PIPE_PP_CONTROL(pipe);
regs->pp_stat = VLV_PIPE_PP_STATUS(pipe);
regs->pp_on = VLV_PIPE_PP_ON_DELAYS(pipe);
regs->pp_off = VLV_PIPE_PP_OFF_DELAYS(pipe);
regs->pp_div = VLV_PIPE_PP_DIVISOR(pipe);
}
}
static i915_reg_t
_pp_ctrl_reg(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct pps_registers regs;
if (IS_BROXTON(dev))
return BXT_PP_CONTROL(bxt_power_sequencer_idx(intel_dp));
else if (HAS_PCH_SPLIT(dev))
return PCH_PP_CONTROL;
else
return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp));
intel_pps_get_registers(to_i915(intel_dp_to_dev(intel_dp)), intel_dp,
&regs);
return regs.pp_ctrl;
}
static i915_reg_t
_pp_stat_reg(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct pps_registers regs;
if (IS_BROXTON(dev))
return BXT_PP_STATUS(bxt_power_sequencer_idx(intel_dp));
else if (HAS_PCH_SPLIT(dev))
return PCH_PP_STATUS;
else
return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp));
intel_pps_get_registers(to_i915(intel_dp_to_dev(intel_dp)), intel_dp,
&regs);
return regs.pp_stat;
}
/* Reboot notifier handler to shutdown panel power to guarantee T12 timing
@ -4745,7 +4779,7 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
struct edp_power_seq cur, vbt, spec,
*final = &intel_dp->pps_delays;
u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0;
i915_reg_t pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg;
struct pps_registers regs;
lockdep_assert_held(&dev_priv->pps_mutex);
@ -4753,35 +4787,17 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
if (final->t11_t12 != 0)
return;
if (IS_BROXTON(dev)) {
int idx = bxt_power_sequencer_idx(intel_dp);
pp_ctrl_reg = BXT_PP_CONTROL(idx);
pp_on_reg = BXT_PP_ON_DELAYS(idx);
pp_off_reg = BXT_PP_OFF_DELAYS(idx);
} else if (HAS_PCH_SPLIT(dev)) {
pp_ctrl_reg = PCH_PP_CONTROL;
pp_on_reg = PCH_PP_ON_DELAYS;
pp_off_reg = PCH_PP_OFF_DELAYS;
pp_div_reg = PCH_PP_DIVISOR;
} else {
enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe);
pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe);
pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe);
pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe);
}
intel_pps_get_registers(dev_priv, intel_dp, &regs);
/* Workaround: Need to write PP_CONTROL with the unlock key as
* the very first thing. */
pp_ctl = ironlake_get_pp_control(intel_dp);
pp_on = I915_READ(pp_on_reg);
pp_off = I915_READ(pp_off_reg);
pp_on = I915_READ(regs.pp_on);
pp_off = I915_READ(regs.pp_off);
if (!IS_BROXTON(dev)) {
I915_WRITE(pp_ctrl_reg, pp_ctl);
pp_div = I915_READ(pp_div_reg);
I915_WRITE(regs.pp_ctrl, pp_ctl);
pp_div = I915_READ(regs.pp_div);
}
/* Pull timing values out of registers */
@ -4864,30 +4880,13 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
u32 pp_on, pp_off, pp_div, port_sel = 0;
int div = dev_priv->rawclk_freq / 1000;
i915_reg_t pp_on_reg, pp_off_reg, pp_div_reg, pp_ctrl_reg;
struct pps_registers regs;
enum port port = dp_to_dig_port(intel_dp)->port;
const struct edp_power_seq *seq = &intel_dp->pps_delays;
lockdep_assert_held(&dev_priv->pps_mutex);
if (IS_BROXTON(dev)) {
int idx = bxt_power_sequencer_idx(intel_dp);
pp_ctrl_reg = BXT_PP_CONTROL(idx);
pp_on_reg = BXT_PP_ON_DELAYS(idx);
pp_off_reg = BXT_PP_OFF_DELAYS(idx);
} else if (HAS_PCH_SPLIT(dev)) {
pp_on_reg = PCH_PP_ON_DELAYS;
pp_off_reg = PCH_PP_OFF_DELAYS;
pp_div_reg = PCH_PP_DIVISOR;
} else {
enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe);
pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe);
pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe);
}
intel_pps_get_registers(dev_priv, intel_dp, &regs);
/*
* And finally store the new values in the power sequencer. The
@ -4904,7 +4903,7 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
/* Compute the divisor for the pp clock, simply match the Bspec
* formula. */
if (IS_BROXTON(dev)) {
pp_div = I915_READ(pp_ctrl_reg);
pp_div = I915_READ(regs.pp_ctrl);
pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK;
pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000)
<< BXT_POWER_CYCLE_DELAY_SHIFT);
@ -4927,19 +4926,19 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
pp_on |= port_sel;
I915_WRITE(pp_on_reg, pp_on);
I915_WRITE(pp_off_reg, pp_off);
I915_WRITE(regs.pp_on, pp_on);
I915_WRITE(regs.pp_off, pp_off);
if (IS_BROXTON(dev))
I915_WRITE(pp_ctrl_reg, pp_div);
I915_WRITE(regs.pp_ctrl, pp_div);
else
I915_WRITE(pp_div_reg, pp_div);
I915_WRITE(regs.pp_div, pp_div);
DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n",
I915_READ(pp_on_reg),
I915_READ(pp_off_reg),
I915_READ(regs.pp_on),
I915_READ(regs.pp_off),
IS_BROXTON(dev) ?
(I915_READ(pp_ctrl_reg) & BXT_POWER_CYCLE_DELAY_MASK) :
I915_READ(pp_div_reg));
(I915_READ(regs.pp_ctrl) & BXT_POWER_CYCLE_DELAY_MASK) :
I915_READ(regs.pp_div));
}
/**