[Intel-gfx] [PATCH 04/20] drm/i915: update VLV PLL and DPIO code v6
Jesse Barnes
jbarnes at virtuousgeek.org
Fri Mar 8 19:45:47 CET 2013
In Valleyview voltage swing, pre-emphasis and lane control registers can
be programmed only through the h/w side band fabric. Update
vlv_update_pll, i9xx_crtc_enable, and intel_enable_pll with the
appropriate programming.
We need to make sure that the tx lane reset occurs in both the full mode
set and DPMS paths, so factor things out to allow that.
v2: use different DPIO_DIVISOR values for VGA and DisplayPort
v3: Fix update pll logic to use same DPIO_DIVISOR & DPIO_REFSFR values
for all display interfaces
v4: collapse with various updates
v5: squash with crtc enable/pll enable bits
v6: split out DP code (jbarnes)
put phyready check under IS_VALLEYVIEW (jbarnes)
remove unneeded check in 9xx pll div update (Jani)
wrap VLV pll update call in IS_VALLEYVIEW (Jani)
move port enable back to end of crtc enable (jbarnes)
put phyready check under IS_VALLEYVIEW (jbarnes)
Signed-off-by: Pallavi G <pallavi.g at intel.com>
Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman at intel.com>
Signed-off-by: Gajanan Bhat <gajanan.bhat at intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky at intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 54 ++++++-
drivers/gpu/drm/i915/intel_display.c | 264 ++++++++++++++++++++++++++--------
2 files changed, 256 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6a7e424..feb863d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -388,14 +388,61 @@
#define _DPIO_CORE_CLK_B 0x803c
#define DPIO_CORE_CLK(pipe) _PIPE(pipe, _DPIO_CORE_CLK_A, _DPIO_CORE_CLK_B)
+#define _DPIO_IREF_CTL_A 0x8040
+#define _DPIO_IREF_CTL_B 0x8060
+#define DPIO_IREF_CTL(pipe) _PIPE(pipe, _DPIO_IREF_CTL_A, _DPIO_IREF_CTL_B)
+
+#define _DPIO_IREF_A 0x8044
+#define _DPIO_IREF_B 0x8064
+#define DPIO_IREF(pipe) _PIPE(pipe, _DPIO_IREF_A, _DPIO_IREF_B)
+
+#define _DPIO_PLL_CML_A 0x804c
+#define _DPIO_PLL_CML_B 0x806c
+#define DPIO_PLL_CML(pipe) _PIPE(pipe, _DPIO_PLL_CML_A, _DPIO_PLL_CML_B)
+
#define _DPIO_LFP_COEFF_A 0x8048
#define _DPIO_LFP_COEFF_B 0x8068
#define DPIO_LFP_COEFF(pipe) _PIPE(pipe, _DPIO_LFP_COEFF_A, _DPIO_LFP_COEFF_B)
+#define DPIO_CALIBRATION 0x80ac
+
#define DPIO_FASTCLK_DISABLE 0x8100
-#define DPIO_DATA_CHANNEL1 0x8220
-#define DPIO_DATA_CHANNEL2 0x8420
+#define _DPIO_PCS_TX_0 0x8200
+#define _DPIO_PCS_TX_1 0x8400
+#define DPIO_PCS_TX(pipe) _PIPE(pipe, _DPIO_PCS_TX_0, _DPIO_PCS_TX_1)
+
+#define _DPIO_PCS_CLK_0 0x8204
+#define _DPIO_PCS_CLK_1 0x8404
+#define DPIO_PCS_CLK(pipe) _PIPE(pipe, _DPIO_PCS_CLK_0, _DPIO_PCS_CLK_1)
+
+#define _DPIO_PCS_STAGGER_0 0x8230
+#define _DPIO_PCS_STAGGER_1 0x8430
+#define DPIO_PCS_STAGGER(pipe) _PIPE(pipe, _DPIO_PCS_STAGGER_0, \
+ _DPIO_PCS_STAGGER_1)
+
+#define _DPIO_TX_CTL_0 0x82ac
+#define _DPIO_TX_CTL_1 0x84ac
+#define DPIO_TX_CTL(pipe) _PIPE(pipe, _DPIO_TX_CTL_0, _DPIO_TX_CTL_1)
+
+#define _DPIO_TX_LANE_0 0x82b8
+#define _DPIO_TX_LANE_1 0x84b8
+#define DPIO_TX_LANE(pipe) _PIPE(pipe, _DPIO_TX_LANE_0, _DPIO_TX_LANE_1)
+
+#define _DPIO_DATA_CHANNEL1 0x8220
+#define _DPIO_DATA_CHANNEL2 0x8420
+#define DPIO_DATA_CHANNEL(pipe) _PIPE(pipe, _DPIO_DATA_CHANNEL1, _DPIO_DATA_CHANNEL2)
+
+#define _DPIO_DATA_LANE0 0x0220
+#define _DPIO_DATA_LANE1 0x0420
+#define _DPIO_DATA_LANE2 0x2620
+#define _DPIO_DATA_LANE3 0x2820
+#define DPIO_DATA_LANE_A(pipe) _PIPE(pipe, _DPIO_DATA_LANE0, _DPIO_DATA_LANE2)
+#define DPIO_DATA_LANE_B(pipe) _PIPE(pipe, _DPIO_DATA_LANE1, _DPIO_DATA_LANE3)
+#define DPIO_DATA_CHANNEL1 0x8220
+#define DPIO_DATA_CHANNEL2 0x8420
+
+#define DPIO_TX_BROADCAST 0xc044
/*
* Fence registers
@@ -956,7 +1003,10 @@
#define DPLL_FPA01_P1_POST_DIV_MASK 0x00ff0000 /* i915 */
#define DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW 0x00ff8000 /* Pineview */
#define DPLL_LOCK_VLV (1<<15)
+#define DPLL_INTEGRATED_CRI_CLK_VLV (1<<14)
#define DPLL_INTEGRATED_CLOCK_VLV (1<<13)
+#define DPLL_PORTC_READY_MASK (0xf << 4)
+#define DPLL_PORTB_READY_MASK (0xf)
#define DPLL_FPA01_P1_POST_DIV_MASK_I830 0x001f0000
/*
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ced2f26..ec76320 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3661,6 +3661,56 @@ static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
*/
}
+static void vlv_pll_enable_reset(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+
+ WARN_ON(!mutex_is_locked(&dev_priv->dpio_lock));
+
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
+ u32 val;
+ val = intel_dpio_read(dev_priv, _DPIO_DATA_LANE0);
+ if (pipe)
+ val |= (1<<21);
+ val |= (1<<20);
+ intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL1, val);
+
+ intel_dpio_write(dev_priv, 0x8238, 0x00760018);
+ intel_dpio_write(dev_priv, 0x825c, 0x00400888);
+
+ intel_dpio_write(dev_priv, 0x8200, 0x10080);
+ intel_dpio_write(dev_priv, 0x8204, 0x00600060);
+
+ intel_dpio_write(dev_priv, 0x8294, 0x00000000);
+ intel_dpio_write(dev_priv, 0x8290, 0x2b245f5f);
+ intel_dpio_write(dev_priv, 0x8288, 0x5578b83a);
+ intel_dpio_write(dev_priv, 0x828c, 0x0c782040);
+ intel_dpio_write(dev_priv, 0x690, 0x2b247878);
+ intel_dpio_write(dev_priv, 0x822c, 0x00030000);
+ intel_dpio_write(dev_priv, 0x8224, 0x00002000);
+ intel_dpio_write(dev_priv, 0x8294, 0x80000000);
+
+ }
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) {
+ u32 val;
+ val = intel_dpio_read(dev_priv, _DPIO_DATA_LANE2);
+ if (pipe)
+ val |= (1<<21);
+ val |= (1<<20);
+ intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL2, val);
+
+ intel_dpio_write(dev_priv, 0x8438, 0x00760018);
+ intel_dpio_write(dev_priv, 0x845c, 0x00400888);
+
+ intel_dpio_write(dev_priv, 0x8400, 0x10080);
+ intel_dpio_write(dev_priv, 0x8404, 0x00600060);
+ }
+}
+
static void i9xx_crtc_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
@@ -3669,6 +3719,7 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)
struct intel_encoder *encoder;
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
+ u32 port_mask;
WARN_ON(!crtc->enabled);
@@ -3680,10 +3731,27 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)
intel_enable_pll(dev_priv, pipe);
+ if (IS_VALLEYVIEW(dev)) {
+ mutex_lock(&dev_priv->dpio_lock);
+ vlv_pll_enable_reset(crtc);
+ mutex_unlock(&dev_priv->dpio_lock);
+ }
+
for_each_encoder_on_crtc(dev, crtc, encoder)
if (encoder->pre_enable)
encoder->pre_enable(encoder);
+ if (IS_VALLEYVIEW(dev)) {
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
+ port_mask = DPLL_PORTB_READY_MASK;
+ else
+ port_mask = DPLL_PORTC_READY_MASK; /* eDP on port C */
+
+ if (wait_for((I915_READ(DPLL(0)) & port_mask) == 0, 100))
+ DRM_ERROR("timed out waiting for port ready\n");
+ }
+
intel_enable_pipe(dev_priv, pipe, false);
intel_enable_plane(dev_priv, plane, pipe);
@@ -3733,6 +3801,26 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
((pctl & PFIT_PIPE_MASK) >> PFIT_PIPE_SHIFT) == pipe)
I915_WRITE(PFIT_CONTROL, 0);
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->post_disable)
+ encoder->post_disable(encoder);
+
+ /* Reset lane for VLV platform*/
+ if (IS_VALLEYVIEW(dev)) {
+ mutex_lock(&dev_priv->dpio_lock);
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
+ intel_dpio_write(dev_priv, 0x8200, 0x00000000);
+ intel_dpio_write(dev_priv, 0x8204, 0x00e00060);
+ } else {
+ intel_dpio_write(dev_priv, 0x8400, 0x00000000);
+ intel_dpio_write(dev_priv, 0x8404, 0x00e00060);
+ }
+
+ if (pipe)
+ vlv_init_dpio(dev);
+ mutex_unlock(&dev_priv->dpio_lock);
+ }
+
intel_disable_pll(dev_priv, pipe);
intel_crtc->active = false;
@@ -4309,6 +4397,31 @@ static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
}
}
+static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv)
+{
+ u32 reg_val;
+
+ /*
+ * PLLB opamp always calibrates to max value of 0x3f, force enable it
+ * and set it to a reasonable value instead.
+ */
+ reg_val = intel_dpio_read(dev_priv, 0x8064);
+ reg_val &= 0xffffff30;
+ intel_dpio_write(dev_priv, 0x8064, reg_val);
+
+ reg_val = intel_dpio_read(dev_priv, 0x80ac);
+ reg_val &= 0x8cffffff;
+ intel_dpio_write(dev_priv, 0x80ac, reg_val);
+
+ reg_val = intel_dpio_read(dev_priv, 0x8064);
+ reg_val &= 0xffffff00;
+ intel_dpio_write(dev_priv, 0x8064, reg_val);
+
+ reg_val = intel_dpio_read(dev_priv, 0x80ac);
+ reg_val &= 0xb0ffffff;
+ intel_dpio_write(dev_priv, 0x80ac, reg_val);
+}
+
static void vlv_update_pll(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
@@ -4319,23 +4432,14 @@ static void vlv_update_pll(struct drm_crtc *crtc,
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
- u32 dpll, mdiv, pdiv;
+ u32 dpll, mdiv;
u32 bestn, bestm1, bestm2, bestp1, bestp2;
- bool is_sdvo;
- u32 temp;
+ bool is_hdmi;
+ u32 coreclk, reg_val;
mutex_lock(&dev_priv->dpio_lock);
- is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
- intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
-
- dpll = DPLL_VGA_MODE_DIS;
- dpll |= DPLL_EXT_BUFFER_ENABLE_VLV;
- dpll |= DPLL_REFA_CLK_ENABLE_VLV;
- dpll |= DPLL_INTEGRATED_CLOCK_VLV;
-
- I915_WRITE(DPLL(pipe), dpll);
- POSTING_READ(DPLL(pipe));
+ is_hdmi = intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
bestn = clock->n;
bestm1 = clock->m1;
@@ -4343,71 +4447,99 @@ static void vlv_update_pll(struct drm_crtc *crtc,
bestp1 = clock->p1;
bestp2 = clock->p2;
- /*
- * In Valleyview PLL and program lane counter registers are exposed
- * through DPIO interface
- */
+ /* See eDP HDMI DPIO driver vbios notes doc */
+
+ /* PLL B needs special handling */
+ if (pipe)
+ vlv_pllb_recal_opamp(dev_priv);
+
+ /* Set up Tx target for periodic Rcomp update */
+ intel_dpio_write(dev_priv, 0xc044, 0x0100000f);
+
+ /* Disable target IRef on PLL */
+ reg_val = intel_dpio_read(dev_priv, DPIO_IREF_CTL(pipe));
+ reg_val &= 0x00ffffff;
+ intel_dpio_write(dev_priv, DPIO_IREF_CTL(pipe), reg_val);
+
+ intel_dpio_write(dev_priv, DPIO_FASTCLK_DISABLE, 0x610);
+
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) {
+ if (adjusted_mode->clock == 162000)
+ intel_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe),
+ 0x009f0003);
+ else
+ intel_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe),
+ 0x00d0000f);
+
+ } else
+ intel_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe),
+ 0x009f0003);
+
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) {
+ if (!pipe)
+ intel_dpio_write(dev_priv, DPIO_REFSFR(pipe),
+ 0x0df40000);
+ else
+ intel_dpio_write(dev_priv, DPIO_REFSFR(pipe),
+ 0x0df70000);
+ } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
+ if (!pipe)
+ intel_dpio_write(dev_priv, DPIO_REFSFR(pipe),
+ 0x0df70000);
+ else
+ intel_dpio_write(dev_priv, DPIO_REFSFR(pipe),
+ 0x0df40000);
+ }
+
mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
mdiv |= ((bestn << DPIO_N_SHIFT));
mdiv |= (1 << DPIO_POST_DIV_SHIFT);
mdiv |= (1 << DPIO_K_SHIFT);
+ intel_dpio_write(dev_priv, DPIO_DIV(pipe), mdiv);
+
mdiv |= DPIO_ENABLE_CALIBRATION;
intel_dpio_write(dev_priv, DPIO_DIV(pipe), mdiv);
- intel_dpio_write(dev_priv, DPIO_CORE_CLK(pipe), 0x01000000);
+ coreclk = intel_dpio_read(dev_priv, DPIO_CORE_CLK(pipe));
+ coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
+ intel_dpio_write(dev_priv, DPIO_CORE_CLK(pipe), coreclk);
- pdiv = (1 << DPIO_REFSEL_OVERRIDE) | (5 << DPIO_PLL_MODESEL_SHIFT) |
- (3 << DPIO_BIAS_CURRENT_CTL_SHIFT) | (1<<20) |
- (7 << DPIO_PLL_REFCLK_SEL_SHIFT) | (8 << DPIO_DRIVER_CTL_SHIFT) |
- (5 << DPIO_CLK_BIAS_CTL_SHIFT);
- intel_dpio_write(dev_priv, DPIO_REFSFR(pipe), pdiv);
+ intel_dpio_write(dev_priv, DPIO_PLL_CML(pipe), 0x87871000);
- intel_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe), 0x005f003b);
+ /* Enable DPIO clock input */
+ dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REFA_CLK_ENABLE_VLV |
+ DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_CLOCK_VLV;
+ if (pipe)
+ dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
dpll |= DPLL_VCO_ENABLE;
I915_WRITE(DPLL(pipe), dpll);
POSTING_READ(DPLL(pipe));
+ udelay(150);
+
if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
DRM_ERROR("DPLL %d failed to lock\n", pipe);
- intel_dpio_write(dev_priv, DPIO_FASTCLK_DISABLE, 0x620);
-
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
- intel_dp_set_m_n(crtc, mode, adjusted_mode);
-
- I915_WRITE(DPLL(pipe), dpll);
+ if (is_hdmi) {
+ u32 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
- /* Wait for the clocks to stabilize. */
- POSTING_READ(DPLL(pipe));
- udelay(150);
-
- temp = 0;
- if (is_sdvo) {
- temp = intel_mode_get_pixel_multiplier(adjusted_mode);
if (temp > 1)
temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
else
temp = 0;
- }
- I915_WRITE(DPLL_MD(pipe), temp);
- POSTING_READ(DPLL_MD(pipe));
- /* Now program lane control registers */
- if(intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)
- || intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
- {
- temp = 0x1000C4;
- if(pipe == 1)
- temp |= (1 << 21);
- intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL1, temp);
+ I915_WRITE(DPLL_MD(pipe), temp);
+ POSTING_READ(DPLL_MD(pipe));
}
- if(intel_pipe_has_type(crtc,INTEL_OUTPUT_EDP))
- {
- temp = 0x1000C4;
- if(pipe == 1)
- temp |= (1 << 21);
- intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL2, temp);
+
+ vlv_pll_enable_reset(crtc);
+
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) {
+ intel_dp_set_m_n(crtc, mode, adjusted_mode);
}
mutex_unlock(&dev_priv->dpio_lock);
@@ -4719,11 +4851,12 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
i8xx_update_pll(crtc, adjusted_mode, &clock,
has_reduced_clock ? &reduced_clock : NULL,
num_connectors);
- else if (IS_VALLEYVIEW(dev))
+ else if (IS_VALLEYVIEW(dev)) {
+ refclk = i9xx_get_refclk(crtc, num_connectors);
vlv_update_pll(crtc, mode, adjusted_mode, &clock,
has_reduced_clock ? &reduced_clock : NULL,
num_connectors);
- else
+ } else
i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
has_reduced_clock ? &reduced_clock : NULL,
num_connectors);
@@ -4814,6 +4947,21 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
intel_update_watermarks(dev);
+ if (IS_VALLEYVIEW(dev)) {
+ u32 port_mask;
+
+ /* Wait for Phy status bits to go low */
+ for_each_encoder_on_crtc(dev, crtc, encoder) {
+ if (encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
+ encoder->type == INTEL_OUTPUT_HDMI)
+ port_mask = DPLL_PORTB_READY_MASK;
+ else
+ port_mask = DPLL_PORTC_READY_MASK; /* eDP */
+ if (wait_for((I915_READ(DPLL(0)) & port_mask) == 0, 100))
+ DRM_ERROR("timed out waiting for port ready\n");
+ }
+ }
+
return ret;
}
@@ -8407,7 +8555,6 @@ static void intel_setup_outputs(struct drm_device *dev)
if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED)
intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC,
PORT_C);
-
} else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
bool found = false;
@@ -9258,9 +9405,6 @@ void intel_modeset_cleanup(struct drm_device *dev)
ironlake_teardown_rc6(dev);
- if (IS_VALLEYVIEW(dev))
- vlv_init_dpio(dev);
-
mutex_unlock(&dev->struct_mutex);
/* Disable the irq before mode object teardown, for the irq might
--
1.7.10.4
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