Modifying PPS functions in intel_dp.c to avoid using too many conditional
statements based on platform.
Calling vlv_initial_power_sequencer_setup() from vlv specific pps functions
to just initialize vlv specific data and continue with the rest of the generic
code.
Signed-off-by: Vandana Kannan <vandana.kan...@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 215 ++++++++++++++++++++++++++-------------
drivers/gpu/drm/i915/intel_drv.h | 3 +
2 files changed, 146 insertions(+), 72 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1d4bf78..1c6b4b3 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -520,8 +520,6 @@ vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp)
DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n",
port_name(port), pipe_name(intel_dp->pps_pipe));
- intel_dp_init_panel_power_sequencer(dev, intel_dp);
- intel_dp_init_panel_power_sequencer_registers(dev, intel_dp);
}
void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv)
@@ -4714,6 +4712,7 @@ static void intel_edp_panel_vdd_sanitize(struct intel_dp
*intel_dp)
static void intel_dp_encoder_reset(struct drm_encoder *encoder)
{
+ struct drm_device *dev = encoder->dev;
struct intel_dp *intel_dp;
if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP)
@@ -4727,8 +4726,10 @@ static void intel_dp_encoder_reset(struct drm_encoder
*encoder)
* Read out the current power sequencer assignment,
* in case the BIOS did something with it.
*/
- if (IS_VALLEYVIEW(encoder->dev))
- vlv_initial_power_sequencer_setup(intel_dp);
+ if (IS_VALLEYVIEW(dev)) {
+ intel_dp_init_panel_power_sequencer(dev, intel_dp);
+ intel_dp_init_panel_power_sequencer_registers(dev, intel_dp);
+ }
intel_edp_panel_vdd_sanitize(intel_dp);
@@ -4917,45 +4918,26 @@ static void intel_dp_init_panel_power_timestamps(struct
intel_dp *intel_dp)
intel_dp->last_backlight_off = jiffies;
}
-static void
-intel_dp_init_panel_power_sequencer(struct drm_device *dev,
- struct intel_dp *intel_dp)
+static struct edp_power_seq pch_get_pps_registers(
+ struct intel_dp *intel_dp,
+ u32 pp_ctrl_reg, u32 pp_on_reg,
+ u32 pp_off_reg, u32 pp_div_reg)
{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct edp_power_seq cur, vbt, spec,
- *final = &intel_dp->pps_delays;
u32 pp_on, pp_off, pp_div, pp;
- int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg;
-
- lockdep_assert_held(&dev_priv->pps_mutex);
+ struct edp_power_seq cur;
- /* already initialized? */
- if (final->t11_t12 != 0)
- return;
-
- 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);
- }
+ pp_on = I915_READ(pp_on_reg);
+ pp_off = I915_READ(pp_off_reg);
+ pp_div = I915_READ(pp_div_reg);
/* Workaround: Need to write PP_CONTROL with the unlock key as
* the very first thing. */
pp = ironlake_get_pp_control(intel_dp);
I915_WRITE(pp_ctrl_reg, pp);
- pp_on = I915_READ(pp_on_reg);
- pp_off = I915_READ(pp_off_reg);
- pp_div = I915_READ(pp_div_reg);
-
/* Pull timing values out of registers */
cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >>
PANEL_POWER_UP_DELAY_SHIFT;
@@ -4970,10 +4952,61 @@ intel_dp_init_panel_power_sequencer(struct drm_device
*dev,
PANEL_POWER_DOWN_DELAY_SHIFT;
cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >>
- PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000;
+ PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000;
DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n",
- cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12);
+ cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12);
+
+ return cur;
+}
+
+
+static struct edp_power_seq pch_setup_pps(struct intel_dp *intel_dp)
+{
+ int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg;
+
+ 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;
+
+ return pch_get_pps_registers(intel_dp, pp_ctrl_reg, pp_on_reg,
+ pp_off_reg, pp_div_reg);
+}
+
+static struct edp_power_seq vlv_setup_pps(struct intel_dp *intel_dp)
+{
+ enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
+ int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg;
+
+ vlv_initial_power_sequencer_setup(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);
+
+ return pch_get_pps_registers(intel_dp, pp_ctrl_reg, pp_on_reg,
+ pp_off_reg, pp_div_reg);
+}
+
+static void
+intel_dp_init_panel_power_sequencer(struct drm_device *dev,
+ struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct edp_power_seq cur = { 0, 0, 0, 0, 0 }, vbt, spec,
+ *final = &intel_dp->pps_delays;
+
+ lockdep_assert_held(&dev_priv->pps_mutex);
+
+ /* already initialized? */
+ if (final->t11_t12 != 0)
+ return;
+
+ /* Get chip specific register values */
+ if (intel_dp->setup_panel_power_seq)
+ cur = intel_dp->setup_panel_power_seq(intel_dp);
vbt = dev_priv->vbt.edp_pps;
@@ -5020,30 +5053,16 @@ intel_dp_init_panel_power_sequencer(struct drm_device
*dev,
intel_dp->backlight_on_delay,
intel_dp->backlight_off_delay);
}
-static void
-intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
- struct intel_dp *intel_dp)
+static void pch_actually_set_pps_registers(
+ struct intel_dp *intel_dp,
+ int pp_on_reg, int pp_off_reg, int pp_div_reg,
+ int port_sel, int div)
{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 pp_on, pp_off, pp_div, port_sel = 0;
- int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) :
intel_hrawclk(dev);
- int pp_on_reg, pp_off_reg, pp_div_reg;
- 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 (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);
- }
+ u32 pp_on, pp_off, pp_div;
/*
* And finally store the new values in the power sequencer. The
@@ -5056,24 +5075,13 @@ intel_dp_init_panel_power_sequencer_registers(struct
drm_device *dev,
pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) |
(1 << PANEL_LIGHT_ON_DELAY_SHIFT);
pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) |
- (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT);
+ (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT);
/* Compute the divisor for the pp clock, simply match the Bspec
* formula. */
pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT;
pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000)
<< PANEL_POWER_CYCLE_DELAY_SHIFT);
- /* Haswell doesn't have any port selection bits for the panel
- * power sequencer any more. */
- if (IS_VALLEYVIEW(dev)) {
- port_sel = PANEL_PORT_SELECT_VLV(port);
- } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
- if (port == PORT_A)
- port_sel = PANEL_PORT_SELECT_DPA;
- else
- port_sel = PANEL_PORT_SELECT_DPD;
- }
-
pp_on |= port_sel;
I915_WRITE(pp_on_reg, pp_on);
@@ -5084,6 +5092,64 @@ intel_dp_init_panel_power_sequencer_registers(struct
drm_device *dev,
I915_READ(pp_on_reg),
I915_READ(pp_off_reg),
I915_READ(pp_div_reg));
+
+}
+
+static void vlv_set_pps_registers(struct intel_dp *intel_dp,
+ enum port port)
+{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ int pp_on_reg, pp_off_reg, pp_div_reg, port_sel = 0, div;
+ enum pipe pipe = PIPE_A;
+
+ 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);
+
+ port_sel = PANEL_PORT_SELECT_VLV(port);
+ div = intel_hrawclk(dev);
+
+ pch_actually_set_pps_registers(intel_dp, pp_on_reg, pp_off_reg,
+ pp_div_reg, port_sel, div);
+}
+
+static void pch_set_pps_registers(struct intel_dp *intel_dp,
+ enum port port)
+{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ int pp_on_reg, pp_off_reg, pp_div_reg, port_sel = 0, div;
+
+ pp_on_reg = PCH_PP_ON_DELAYS;
+ pp_off_reg = PCH_PP_OFF_DELAYS;
+ pp_div_reg = PCH_PP_DIVISOR;
+
+ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
+ if (port == PORT_A)
+ port_sel = PANEL_PORT_SELECT_DPA;
+ else
+ port_sel = PANEL_PORT_SELECT_DPD;
+ }
+ div = intel_pch_rawclk(dev);
+
+ pch_actually_set_pps_registers(intel_dp, pp_on_reg, pp_off_reg,
+ pp_div_reg, port_sel, div);
+}
+
+static void
+intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
+ struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum port port = dp_to_dig_port(intel_dp)->port;
+
+ lockdep_assert_held(&dev_priv->pps_mutex);
+
+ if (intel_dp->set_pps_registers)
+ intel_dp->set_pps_registers(intel_dp, port);
}
void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate)
@@ -5234,6 +5300,14 @@ static bool intel_edp_init_connector(struct intel_dp
*intel_dp,
if (!is_edp(intel_dp))
return true;
+ if (IS_VALLEYVIEW(dev)) {
+ intel_dp->setup_panel_power_seq = vlv_setup_pps;
+ intel_dp->set_pps_registers = vlv_set_pps_registers;
+ } else {
+ intel_dp->setup_panel_power_seq = pch_setup_pps;
+ intel_dp->set_pps_registers = pch_set_pps_registers;
+ }
+
pps_lock(intel_dp);
intel_edp_panel_vdd_sanitize(intel_dp);
pps_unlock(intel_dp);
@@ -5255,10 +5329,7 @@ static bool intel_edp_init_connector(struct intel_dp
*intel_dp,
/* We now know it's not a ghost, init power sequence regs. */
pps_lock(intel_dp);
intel_dp_init_panel_power_timestamps(intel_dp);
- if (IS_VALLEYVIEW(dev))
- vlv_initial_power_sequencer_setup(intel_dp);
- else
- intel_dp_init_panel_power_sequencer(dev, intel_dp);
+ intel_dp_init_panel_power_sequencer(dev, intel_dp);
intel_dp_init_panel_power_sequencer_registers(dev, intel_dp);
pps_unlock(intel_dp);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 5c622ad..345bcbc 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -629,6 +629,9 @@ struct intel_dp {
struct mutex mutex;
} drrs_state;
+ struct edp_power_seq (*setup_panel_power_seq)
+ (struct intel_dp *intel_dp);
+ void (*set_pps_registers)(struct intel_dp *intel_dp, enum port port);
};
struct intel_digital_port {
--
2.0.1
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