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drm/i915: Move ddi shared dpll code to intel_dpll_mgr.c 

No functional changes.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1457451987-17466-3-git-send-email-ander.conselvan.de.oliveira@intel.com
This commit is contained in:
Ander Conselvan de Oliveira 2016-03-08 17:46:16 +02:00
parent 7abd4b35a5
commit 55be2f0854
3 changed files with 472 additions and 473 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

472
drivers/gpu/drm/i915/intel_ddi.c
View File

@ -2430,235 +2430,6 @@ static void intel_disable_ddi(struct intel_encoder *intel_encoder)
}
}
static void hsw_ddi_wrpll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
I915_WRITE(WRPLL_CTL(pll->id), pll->config.hw_state.wrpll);
POSTING_READ(WRPLL_CTL(pll->id));
udelay(20);
}
static void hsw_ddi_spll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
I915_WRITE(SPLL_CTL, pll->config.hw_state.spll);
POSTING_READ(SPLL_CTL);
udelay(20);
}
static void hsw_ddi_wrpll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t val;
val = I915_READ(WRPLL_CTL(pll->id));
I915_WRITE(WRPLL_CTL(pll->id), val & ~WRPLL_PLL_ENABLE);
POSTING_READ(WRPLL_CTL(pll->id));
}
static void hsw_ddi_spll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t val;
val = I915_READ(SPLL_CTL);
I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE);
POSTING_READ(SPLL_CTL);
}
static bool hsw_ddi_wrpll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
uint32_t val;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
val = I915_READ(WRPLL_CTL(pll->id));
hw_state->wrpll = val;
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return val & WRPLL_PLL_ENABLE;
}
static bool hsw_ddi_spll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
uint32_t val;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
val = I915_READ(SPLL_CTL);
hw_state->spll = val;
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return val & SPLL_PLL_ENABLE;
}
static const char * const hsw_ddi_pll_names[] = {
"WRPLL 1",
"WRPLL 2",
"SPLL"
};
static void hsw_shared_dplls_init(struct drm_i915_private *dev_priv)
{
int i;
dev_priv->num_shared_dpll = 3;
for (i = 0; i < 2; i++) {
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = hsw_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = hsw_ddi_wrpll_disable;
dev_priv->shared_dplls[i].enable = hsw_ddi_wrpll_enable;
dev_priv->shared_dplls[i].get_hw_state =
hsw_ddi_wrpll_get_hw_state;
}
/* SPLL is special, but needs to be initialized anyway.. */
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = hsw_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = hsw_ddi_spll_disable;
dev_priv->shared_dplls[i].enable = hsw_ddi_spll_enable;
dev_priv->shared_dplls[i].get_hw_state = hsw_ddi_spll_get_hw_state;
}
static const char * const skl_ddi_pll_names[] = {
"DPLL 1",
"DPLL 2",
"DPLL 3",
};
struct skl_dpll_regs {
i915_reg_t ctl, cfgcr1, cfgcr2;
};
/* this array is indexed by the *shared* pll id */
static const struct skl_dpll_regs skl_dpll_regs[3] = {
{
/* DPLL 1 */
.ctl = LCPLL2_CTL,
.cfgcr1 = DPLL_CFGCR1(SKL_DPLL1),
.cfgcr2 = DPLL_CFGCR2(SKL_DPLL1),
},
{
/* DPLL 2 */
.ctl = WRPLL_CTL(0),
.cfgcr1 = DPLL_CFGCR1(SKL_DPLL2),
.cfgcr2 = DPLL_CFGCR2(SKL_DPLL2),
},
{
/* DPLL 3 */
.ctl = WRPLL_CTL(1),
.cfgcr1 = DPLL_CFGCR1(SKL_DPLL3),
.cfgcr2 = DPLL_CFGCR2(SKL_DPLL3),
},
};
static void skl_ddi_pll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t val;
unsigned int dpll;
const struct skl_dpll_regs *regs = skl_dpll_regs;
/* DPLL0 is not part of the shared DPLLs, so pll->id is 0 for DPLL1 */
dpll = pll->id + 1;
val = I915_READ(DPLL_CTRL1);
val &= ~(DPLL_CTRL1_HDMI_MODE(dpll) | DPLL_CTRL1_SSC(dpll) |
DPLL_CTRL1_LINK_RATE_MASK(dpll));
val |= pll->config.hw_state.ctrl1 << (dpll * 6);
I915_WRITE(DPLL_CTRL1, val);
POSTING_READ(DPLL_CTRL1);
I915_WRITE(regs[pll->id].cfgcr1, pll->config.hw_state.cfgcr1);
I915_WRITE(regs[pll->id].cfgcr2, pll->config.hw_state.cfgcr2);
POSTING_READ(regs[pll->id].cfgcr1);
POSTING_READ(regs[pll->id].cfgcr2);
/* the enable bit is always bit 31 */
I915_WRITE(regs[pll->id].ctl,
I915_READ(regs[pll->id].ctl) | LCPLL_PLL_ENABLE);
if (wait_for(I915_READ(DPLL_STATUS) & DPLL_LOCK(dpll), 5))
DRM_ERROR("DPLL %d not locked\n", dpll);
}
static void skl_ddi_pll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
const struct skl_dpll_regs *regs = skl_dpll_regs;
/* the enable bit is always bit 31 */
I915_WRITE(regs[pll->id].ctl,
I915_READ(regs[pll->id].ctl) & ~LCPLL_PLL_ENABLE);
POSTING_READ(regs[pll->id].ctl);
}
static bool skl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
uint32_t val;
unsigned int dpll;
const struct skl_dpll_regs *regs = skl_dpll_regs;
bool ret;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
ret = false;
/* DPLL0 is not part of the shared DPLLs, so pll->id is 0 for DPLL1 */
dpll = pll->id + 1;
val = I915_READ(regs[pll->id].ctl);
if (!(val & LCPLL_PLL_ENABLE))
goto out;
val = I915_READ(DPLL_CTRL1);
hw_state->ctrl1 = (val >> (dpll * 6)) & 0x3f;
/* avoid reading back stale values if HDMI mode is not enabled */
if (val & DPLL_CTRL1_HDMI_MODE(dpll)) {
hw_state->cfgcr1 = I915_READ(regs[pll->id].cfgcr1);
hw_state->cfgcr2 = I915_READ(regs[pll->id].cfgcr2);
}
ret = true;
out:
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return ret;
}
static void skl_shared_dplls_init(struct drm_i915_private *dev_priv)
{
int i;
dev_priv->num_shared_dpll = 3;
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = skl_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = skl_ddi_pll_disable;
dev_priv->shared_dplls[i].enable = skl_ddi_pll_enable;
dev_priv->shared_dplls[i].get_hw_state =
skl_ddi_pll_get_hw_state;
}
}
static void broxton_phy_init(struct drm_i915_private *dev_priv,
enum dpio_phy phy)
{
@ -2783,249 +2554,6 @@ void broxton_ddi_phy_uninit(struct drm_device *dev)
I915_WRITE(BXT_P_CR_GT_DISP_PWRON, 0);
}
static const char * const bxt_ddi_pll_names[] = {
"PORT PLL A",
"PORT PLL B",
"PORT PLL C",
};
static void bxt_ddi_pll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t temp;
enum port port = (enum port)pll->id; /* 1:1 port->PLL mapping */
temp = I915_READ(BXT_PORT_PLL_ENABLE(port));
temp &= ~PORT_PLL_REF_SEL;
/* Non-SSC reference */
I915_WRITE(BXT_PORT_PLL_ENABLE(port), temp);
/* Disable 10 bit clock */
temp = I915_READ(BXT_PORT_PLL_EBB_4(port));
temp &= ~PORT_PLL_10BIT_CLK_ENABLE;
I915_WRITE(BXT_PORT_PLL_EBB_4(port), temp);
/* Write P1 & P2 */
temp = I915_READ(BXT_PORT_PLL_EBB_0(port));
temp &= ~(PORT_PLL_P1_MASK | PORT_PLL_P2_MASK);
temp |= pll->config.hw_state.ebb0;
I915_WRITE(BXT_PORT_PLL_EBB_0(port), temp);
/* Write M2 integer */
temp = I915_READ(BXT_PORT_PLL(port, 0));
temp &= ~PORT_PLL_M2_MASK;
temp |= pll->config.hw_state.pll0;
I915_WRITE(BXT_PORT_PLL(port, 0), temp);
/* Write N */
temp = I915_READ(BXT_PORT_PLL(port, 1));
temp &= ~PORT_PLL_N_MASK;
temp |= pll->config.hw_state.pll1;
I915_WRITE(BXT_PORT_PLL(port, 1), temp);
/* Write M2 fraction */
temp = I915_READ(BXT_PORT_PLL(port, 2));
temp &= ~PORT_PLL_M2_FRAC_MASK;
temp |= pll->config.hw_state.pll2;
I915_WRITE(BXT_PORT_PLL(port, 2), temp);
/* Write M2 fraction enable */
temp = I915_READ(BXT_PORT_PLL(port, 3));
temp &= ~PORT_PLL_M2_FRAC_ENABLE;
temp |= pll->config.hw_state.pll3;
I915_WRITE(BXT_PORT_PLL(port, 3), temp);
/* Write coeff */
temp = I915_READ(BXT_PORT_PLL(port, 6));
temp &= ~PORT_PLL_PROP_COEFF_MASK;
temp &= ~PORT_PLL_INT_COEFF_MASK;
temp &= ~PORT_PLL_GAIN_CTL_MASK;
temp |= pll->config.hw_state.pll6;
I915_WRITE(BXT_PORT_PLL(port, 6), temp);
/* Write calibration val */
temp = I915_READ(BXT_PORT_PLL(port, 8));
temp &= ~PORT_PLL_TARGET_CNT_MASK;
temp |= pll->config.hw_state.pll8;
I915_WRITE(BXT_PORT_PLL(port, 8), temp);
temp = I915_READ(BXT_PORT_PLL(port, 9));
temp &= ~PORT_PLL_LOCK_THRESHOLD_MASK;
temp |= pll->config.hw_state.pll9;
I915_WRITE(BXT_PORT_PLL(port, 9), temp);
temp = I915_READ(BXT_PORT_PLL(port, 10));
temp &= ~PORT_PLL_DCO_AMP_OVR_EN_H;
temp &= ~PORT_PLL_DCO_AMP_MASK;
temp |= pll->config.hw_state.pll10;
I915_WRITE(BXT_PORT_PLL(port, 10), temp);
/* Recalibrate with new settings */
temp = I915_READ(BXT_PORT_PLL_EBB_4(port));
temp |= PORT_PLL_RECALIBRATE;
I915_WRITE(BXT_PORT_PLL_EBB_4(port), temp);
temp &= ~PORT_PLL_10BIT_CLK_ENABLE;
temp |= pll->config.hw_state.ebb4;
I915_WRITE(BXT_PORT_PLL_EBB_4(port), temp);
/* Enable PLL */
temp = I915_READ(BXT_PORT_PLL_ENABLE(port));
temp |= PORT_PLL_ENABLE;
I915_WRITE(BXT_PORT_PLL_ENABLE(port), temp);
POSTING_READ(BXT_PORT_PLL_ENABLE(port));
if (wait_for_atomic_us((I915_READ(BXT_PORT_PLL_ENABLE(port)) &
PORT_PLL_LOCK), 200))
DRM_ERROR("PLL %d not locked\n", port);
/*
* While we write to the group register to program all lanes at once we
* can read only lane registers and we pick lanes 0/1 for that.
*/
temp = I915_READ(BXT_PORT_PCS_DW12_LN01(port));
temp &= ~LANE_STAGGER_MASK;
temp &= ~LANESTAGGER_STRAP_OVRD;
temp |= pll->config.hw_state.pcsdw12;
I915_WRITE(BXT_PORT_PCS_DW12_GRP(port), temp);
}
static void bxt_ddi_pll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
enum port port = (enum port)pll->id; /* 1:1 port->PLL mapping */
uint32_t temp;
temp = I915_READ(BXT_PORT_PLL_ENABLE(port));
temp &= ~PORT_PLL_ENABLE;
I915_WRITE(BXT_PORT_PLL_ENABLE(port), temp);
POSTING_READ(BXT_PORT_PLL_ENABLE(port));
}
static bool bxt_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
enum port port = (enum port)pll->id; /* 1:1 port->PLL mapping */
uint32_t val;
bool ret;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
ret = false;
val = I915_READ(BXT_PORT_PLL_ENABLE(port));
if (!(val & PORT_PLL_ENABLE))
goto out;
hw_state->ebb0 = I915_READ(BXT_PORT_PLL_EBB_0(port));
hw_state->ebb0 &= PORT_PLL_P1_MASK | PORT_PLL_P2_MASK;
hw_state->ebb4 = I915_READ(BXT_PORT_PLL_EBB_4(port));
hw_state->ebb4 &= PORT_PLL_10BIT_CLK_ENABLE;
hw_state->pll0 = I915_READ(BXT_PORT_PLL(port, 0));
hw_state->pll0 &= PORT_PLL_M2_MASK;
hw_state->pll1 = I915_READ(BXT_PORT_PLL(port, 1));
hw_state->pll1 &= PORT_PLL_N_MASK;
hw_state->pll2 = I915_READ(BXT_PORT_PLL(port, 2));
hw_state->pll2 &= PORT_PLL_M2_FRAC_MASK;
hw_state->pll3 = I915_READ(BXT_PORT_PLL(port, 3));
hw_state->pll3 &= PORT_PLL_M2_FRAC_ENABLE;
hw_state->pll6 = I915_READ(BXT_PORT_PLL(port, 6));
hw_state->pll6 &= PORT_PLL_PROP_COEFF_MASK |
PORT_PLL_INT_COEFF_MASK |
PORT_PLL_GAIN_CTL_MASK;
hw_state->pll8 = I915_READ(BXT_PORT_PLL(port, 8));
hw_state->pll8 &= PORT_PLL_TARGET_CNT_MASK;
hw_state->pll9 = I915_READ(BXT_PORT_PLL(port, 9));
hw_state->pll9 &= PORT_PLL_LOCK_THRESHOLD_MASK;
hw_state->pll10 = I915_READ(BXT_PORT_PLL(port, 10));
hw_state->pll10 &= PORT_PLL_DCO_AMP_OVR_EN_H |
PORT_PLL_DCO_AMP_MASK;
/*
* While we write to the group register to program all lanes at once we
* can read only lane registers. We configure all lanes the same way, so
* here just read out lanes 0/1 and output a note if lanes 2/3 differ.
*/
hw_state->pcsdw12 = I915_READ(BXT_PORT_PCS_DW12_LN01(port));
if (I915_READ(BXT_PORT_PCS_DW12_LN23(port)) != hw_state->pcsdw12)
DRM_DEBUG_DRIVER("lane stagger config different for lane 01 (%08x) and 23 (%08x)\n",
hw_state->pcsdw12,
I915_READ(BXT_PORT_PCS_DW12_LN23(port)));
hw_state->pcsdw12 &= LANE_STAGGER_MASK | LANESTAGGER_STRAP_OVRD;
ret = true;
out:
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return ret;
}
static void bxt_shared_dplls_init(struct drm_i915_private *dev_priv)
{
int i;
dev_priv->num_shared_dpll = 3;
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = bxt_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = bxt_ddi_pll_disable;
dev_priv->shared_dplls[i].enable = bxt_ddi_pll_enable;
dev_priv->shared_dplls[i].get_hw_state =
bxt_ddi_pll_get_hw_state;
}
}
void intel_ddi_pll_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t val = I915_READ(LCPLL_CTL);
if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
skl_shared_dplls_init(dev_priv);
else if (IS_BROXTON(dev))
bxt_shared_dplls_init(dev_priv);
else
hsw_shared_dplls_init(dev_priv);
if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
int cdclk_freq;
cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
dev_priv->skl_boot_cdclk = cdclk_freq;
if (skl_sanitize_cdclk(dev_priv))
DRM_DEBUG_KMS("Sanitized cdclk programmed by pre-os\n");
if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE))
DRM_ERROR("LCPLL1 is disabled\n");
} else if (IS_BROXTON(dev)) {
broxton_init_cdclk(dev);
broxton_ddi_phy_init(dev);
} else {
/*
* The LCPLL register should be turned on by the BIOS. For now
* let's just check its state and print errors in case
* something is wrong. Don't even try to turn it on.
*/
if (val & LCPLL_CD_SOURCE_FCLK)
DRM_ERROR("CDCLK source is not LCPLL\n");
if (val & LCPLL_PLL_DISABLE)
DRM_ERROR("LCPLL is disabled\n");
}
}
void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);

472
drivers/gpu/drm/i915/intel_dpll_mgr.c
View File

@ -353,6 +353,478 @@ static void ibx_pch_dpll_init(struct drm_device *dev)
}
}
static void hsw_ddi_wrpll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
I915_WRITE(WRPLL_CTL(pll->id), pll->config.hw_state.wrpll);
POSTING_READ(WRPLL_CTL(pll->id));
udelay(20);
}
static void hsw_ddi_spll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
I915_WRITE(SPLL_CTL, pll->config.hw_state.spll);
POSTING_READ(SPLL_CTL);
udelay(20);
}
static void hsw_ddi_wrpll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t val;
val = I915_READ(WRPLL_CTL(pll->id));
I915_WRITE(WRPLL_CTL(pll->id), val & ~WRPLL_PLL_ENABLE);
POSTING_READ(WRPLL_CTL(pll->id));
}
static void hsw_ddi_spll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t val;
val = I915_READ(SPLL_CTL);
I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE);
POSTING_READ(SPLL_CTL);
}
static bool hsw_ddi_wrpll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
uint32_t val;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
val = I915_READ(WRPLL_CTL(pll->id));
hw_state->wrpll = val;
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return val & WRPLL_PLL_ENABLE;
}
static bool hsw_ddi_spll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
uint32_t val;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
val = I915_READ(SPLL_CTL);
hw_state->spll = val;
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return val & SPLL_PLL_ENABLE;
}
static const char * const hsw_ddi_pll_names[] = {
"WRPLL 1",
"WRPLL 2",
"SPLL"
};
static void hsw_shared_dplls_init(struct drm_i915_private *dev_priv)
{
int i;
dev_priv->num_shared_dpll = 3;
for (i = 0; i < 2; i++) {
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = hsw_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = hsw_ddi_wrpll_disable;
dev_priv->shared_dplls[i].enable = hsw_ddi_wrpll_enable;
dev_priv->shared_dplls[i].get_hw_state =
hsw_ddi_wrpll_get_hw_state;
}
/* SPLL is special, but needs to be initialized anyway.. */
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = hsw_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = hsw_ddi_spll_disable;
dev_priv->shared_dplls[i].enable = hsw_ddi_spll_enable;
dev_priv->shared_dplls[i].get_hw_state = hsw_ddi_spll_get_hw_state;
}
static const char * const skl_ddi_pll_names[] = {
"DPLL 1",
"DPLL 2",
"DPLL 3",
};
struct skl_dpll_regs {
i915_reg_t ctl, cfgcr1, cfgcr2;
};
/* this array is indexed by the *shared* pll id */
static const struct skl_dpll_regs skl_dpll_regs[3] = {
{
/* DPLL 1 */
.ctl = LCPLL2_CTL,
.cfgcr1 = DPLL_CFGCR1(SKL_DPLL1),
.cfgcr2 = DPLL_CFGCR2(SKL_DPLL1),
},
{
/* DPLL 2 */
.ctl = WRPLL_CTL(0),
.cfgcr1 = DPLL_CFGCR1(SKL_DPLL2),
.cfgcr2 = DPLL_CFGCR2(SKL_DPLL2),
},
{
/* DPLL 3 */
.ctl = WRPLL_CTL(1),
.cfgcr1 = DPLL_CFGCR1(SKL_DPLL3),
.cfgcr2 = DPLL_CFGCR2(SKL_DPLL3),
},
};
static void skl_ddi_pll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t val;
unsigned int dpll;
const struct skl_dpll_regs *regs = skl_dpll_regs;
/* DPLL0 is not part of the shared DPLLs, so pll->id is 0 for DPLL1 */
dpll = pll->id + 1;
val = I915_READ(DPLL_CTRL1);
val &= ~(DPLL_CTRL1_HDMI_MODE(dpll) | DPLL_CTRL1_SSC(dpll) |
DPLL_CTRL1_LINK_RATE_MASK(dpll));
val |= pll->config.hw_state.ctrl1 << (dpll * 6);
I915_WRITE(DPLL_CTRL1, val);
POSTING_READ(DPLL_CTRL1);
I915_WRITE(regs[pll->id].cfgcr1, pll->config.hw_state.cfgcr1);
I915_WRITE(regs[pll->id].cfgcr2, pll->config.hw_state.cfgcr2);
POSTING_READ(regs[pll->id].cfgcr1);
POSTING_READ(regs[pll->id].cfgcr2);
/* the enable bit is always bit 31 */
I915_WRITE(regs[pll->id].ctl,
I915_READ(regs[pll->id].ctl) | LCPLL_PLL_ENABLE);
if (wait_for(I915_READ(DPLL_STATUS) & DPLL_LOCK(dpll), 5))
DRM_ERROR("DPLL %d not locked\n", dpll);
}
static void skl_ddi_pll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
const struct skl_dpll_regs *regs = skl_dpll_regs;
/* the enable bit is always bit 31 */
I915_WRITE(regs[pll->id].ctl,
I915_READ(regs[pll->id].ctl) & ~LCPLL_PLL_ENABLE);
POSTING_READ(regs[pll->id].ctl);
}
static bool skl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
uint32_t val;
unsigned int dpll;
const struct skl_dpll_regs *regs = skl_dpll_regs;
bool ret;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
ret = false;
/* DPLL0 is not part of the shared DPLLs, so pll->id is 0 for DPLL1 */
dpll = pll->id + 1;
val = I915_READ(regs[pll->id].ctl);
if (!(val & LCPLL_PLL_ENABLE))
goto out;
val = I915_READ(DPLL_CTRL1);
hw_state->ctrl1 = (val >> (dpll * 6)) & 0x3f;
/* avoid reading back stale values if HDMI mode is not enabled */
if (val & DPLL_CTRL1_HDMI_MODE(dpll)) {
hw_state->cfgcr1 = I915_READ(regs[pll->id].cfgcr1);
hw_state->cfgcr2 = I915_READ(regs[pll->id].cfgcr2);
}
ret = true;
out:
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return ret;
}
static void skl_shared_dplls_init(struct drm_i915_private *dev_priv)
{
int i;
dev_priv->num_shared_dpll = 3;
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = skl_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = skl_ddi_pll_disable;
dev_priv->shared_dplls[i].enable = skl_ddi_pll_enable;
dev_priv->shared_dplls[i].get_hw_state =
skl_ddi_pll_get_hw_state;
}
}
static const char * const bxt_ddi_pll_names[] = {
"PORT PLL A",
"PORT PLL B",
"PORT PLL C",
};
static void bxt_ddi_pll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
uint32_t temp;
enum port port = (enum port)pll->id; /* 1:1 port->PLL mapping */
temp = I915_READ(BXT_PORT_PLL_ENABLE(port));
temp &= ~PORT_PLL_REF_SEL;
/* Non-SSC reference */
I915_WRITE(BXT_PORT_PLL_ENABLE(port), temp);
/* Disable 10 bit clock */
temp = I915_READ(BXT_PORT_PLL_EBB_4(port));
temp &= ~PORT_PLL_10BIT_CLK_ENABLE;
I915_WRITE(BXT_PORT_PLL_EBB_4(port), temp);
/* Write P1 & P2 */
temp = I915_READ(BXT_PORT_PLL_EBB_0(port));
temp &= ~(PORT_PLL_P1_MASK | PORT_PLL_P2_MASK);
temp |= pll->config.hw_state.ebb0;
I915_WRITE(BXT_PORT_PLL_EBB_0(port), temp);
/* Write M2 integer */
temp = I915_READ(BXT_PORT_PLL(port, 0));
temp &= ~PORT_PLL_M2_MASK;
temp |= pll->config.hw_state.pll0;
I915_WRITE(BXT_PORT_PLL(port, 0), temp);
/* Write N */
temp = I915_READ(BXT_PORT_PLL(port, 1));
temp &= ~PORT_PLL_N_MASK;
temp |= pll->config.hw_state.pll1;
I915_WRITE(BXT_PORT_PLL(port, 1), temp);
/* Write M2 fraction */
temp = I915_READ(BXT_PORT_PLL(port, 2));
temp &= ~PORT_PLL_M2_FRAC_MASK;
temp |= pll->config.hw_state.pll2;
I915_WRITE(BXT_PORT_PLL(port, 2), temp);
/* Write M2 fraction enable */
temp = I915_READ(BXT_PORT_PLL(port, 3));
temp &= ~PORT_PLL_M2_FRAC_ENABLE;
temp |= pll->config.hw_state.pll3;
I915_WRITE(BXT_PORT_PLL(port, 3), temp);
/* Write coeff */
temp = I915_READ(BXT_PORT_PLL(port, 6));
temp &= ~PORT_PLL_PROP_COEFF_MASK;
temp &= ~PORT_PLL_INT_COEFF_MASK;
temp &= ~PORT_PLL_GAIN_CTL_MASK;
temp |= pll->config.hw_state.pll6;
I915_WRITE(BXT_PORT_PLL(port, 6), temp);
/* Write calibration val */
temp = I915_READ(BXT_PORT_PLL(port, 8));
temp &= ~PORT_PLL_TARGET_CNT_MASK;
temp |= pll->config.hw_state.pll8;
I915_WRITE(BXT_PORT_PLL(port, 8), temp);
temp = I915_READ(BXT_PORT_PLL(port, 9));
temp &= ~PORT_PLL_LOCK_THRESHOLD_MASK;
temp |= pll->config.hw_state.pll9;
I915_WRITE(BXT_PORT_PLL(port, 9), temp);
temp = I915_READ(BXT_PORT_PLL(port, 10));
temp &= ~PORT_PLL_DCO_AMP_OVR_EN_H;
temp &= ~PORT_PLL_DCO_AMP_MASK;
temp |= pll->config.hw_state.pll10;
I915_WRITE(BXT_PORT_PLL(port, 10), temp);
/* Recalibrate with new settings */
temp = I915_READ(BXT_PORT_PLL_EBB_4(port));
temp |= PORT_PLL_RECALIBRATE;
I915_WRITE(BXT_PORT_PLL_EBB_4(port), temp);
temp &= ~PORT_PLL_10BIT_CLK_ENABLE;
temp |= pll->config.hw_state.ebb4;
I915_WRITE(BXT_PORT_PLL_EBB_4(port), temp);
/* Enable PLL */
temp = I915_READ(BXT_PORT_PLL_ENABLE(port));
temp |= PORT_PLL_ENABLE;
I915_WRITE(BXT_PORT_PLL_ENABLE(port), temp);
POSTING_READ(BXT_PORT_PLL_ENABLE(port));
if (wait_for_atomic_us((I915_READ(BXT_PORT_PLL_ENABLE(port)) &
PORT_PLL_LOCK), 200))
DRM_ERROR("PLL %d not locked\n", port);
/*
* While we write to the group register to program all lanes at once we
* can read only lane registers and we pick lanes 0/1 for that.
*/
temp = I915_READ(BXT_PORT_PCS_DW12_LN01(port));
temp &= ~LANE_STAGGER_MASK;
temp &= ~LANESTAGGER_STRAP_OVRD;
temp |= pll->config.hw_state.pcsdw12;
I915_WRITE(BXT_PORT_PCS_DW12_GRP(port), temp);
}
static void bxt_ddi_pll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
enum port port = (enum port)pll->id; /* 1:1 port->PLL mapping */
uint32_t temp;
temp = I915_READ(BXT_PORT_PLL_ENABLE(port));
temp &= ~PORT_PLL_ENABLE;
I915_WRITE(BXT_PORT_PLL_ENABLE(port), temp);
POSTING_READ(BXT_PORT_PLL_ENABLE(port));
}
static bool bxt_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
enum port port = (enum port)pll->id; /* 1:1 port->PLL mapping */
uint32_t val;
bool ret;
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_PLLS))
return false;
ret = false;
val = I915_READ(BXT_PORT_PLL_ENABLE(port));
if (!(val & PORT_PLL_ENABLE))
goto out;
hw_state->ebb0 = I915_READ(BXT_PORT_PLL_EBB_0(port));
hw_state->ebb0 &= PORT_PLL_P1_MASK | PORT_PLL_P2_MASK;
hw_state->ebb4 = I915_READ(BXT_PORT_PLL_EBB_4(port));
hw_state->ebb4 &= PORT_PLL_10BIT_CLK_ENABLE;
hw_state->pll0 = I915_READ(BXT_PORT_PLL(port, 0));
hw_state->pll0 &= PORT_PLL_M2_MASK;
hw_state->pll1 = I915_READ(BXT_PORT_PLL(port, 1));
hw_state->pll1 &= PORT_PLL_N_MASK;
hw_state->pll2 = I915_READ(BXT_PORT_PLL(port, 2));
hw_state->pll2 &= PORT_PLL_M2_FRAC_MASK;
hw_state->pll3 = I915_READ(BXT_PORT_PLL(port, 3));
hw_state->pll3 &= PORT_PLL_M2_FRAC_ENABLE;
hw_state->pll6 = I915_READ(BXT_PORT_PLL(port, 6));
hw_state->pll6 &= PORT_PLL_PROP_COEFF_MASK |
PORT_PLL_INT_COEFF_MASK |
PORT_PLL_GAIN_CTL_MASK;
hw_state->pll8 = I915_READ(BXT_PORT_PLL(port, 8));
hw_state->pll8 &= PORT_PLL_TARGET_CNT_MASK;
hw_state->pll9 = I915_READ(BXT_PORT_PLL(port, 9));
hw_state->pll9 &= PORT_PLL_LOCK_THRESHOLD_MASK;
hw_state->pll10 = I915_READ(BXT_PORT_PLL(port, 10));
hw_state->pll10 &= PORT_PLL_DCO_AMP_OVR_EN_H |
PORT_PLL_DCO_AMP_MASK;
/*
* While we write to the group register to program all lanes at once we
* can read only lane registers. We configure all lanes the same way, so
* here just read out lanes 0/1 and output a note if lanes 2/3 differ.
*/
hw_state->pcsdw12 = I915_READ(BXT_PORT_PCS_DW12_LN01(port));
if (I915_READ(BXT_PORT_PCS_DW12_LN23(port)) != hw_state->pcsdw12)
DRM_DEBUG_DRIVER("lane stagger config different for lane 01 (%08x) and 23 (%08x)\n",
hw_state->pcsdw12,
I915_READ(BXT_PORT_PCS_DW12_LN23(port)));
hw_state->pcsdw12 &= LANE_STAGGER_MASK | LANESTAGGER_STRAP_OVRD;
ret = true;
out:
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
return ret;
}
static void bxt_shared_dplls_init(struct drm_i915_private *dev_priv)
{
int i;
dev_priv->num_shared_dpll = 3;
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
dev_priv->shared_dplls[i].id = i;
dev_priv->shared_dplls[i].name = bxt_ddi_pll_names[i];
dev_priv->shared_dplls[i].disable = bxt_ddi_pll_disable;
dev_priv->shared_dplls[i].enable = bxt_ddi_pll_enable;
dev_priv->shared_dplls[i].get_hw_state =
bxt_ddi_pll_get_hw_state;
}
}
static void intel_ddi_pll_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t val = I915_READ(LCPLL_CTL);
if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
skl_shared_dplls_init(dev_priv);
else if (IS_BROXTON(dev))
bxt_shared_dplls_init(dev_priv);
else
hsw_shared_dplls_init(dev_priv);
if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
int cdclk_freq;
cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
dev_priv->skl_boot_cdclk = cdclk_freq;
if (skl_sanitize_cdclk(dev_priv))
DRM_DEBUG_KMS("Sanitized cdclk programmed by pre-os\n");
if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE))
DRM_ERROR("LCPLL1 is disabled\n");
} else if (IS_BROXTON(dev)) {
broxton_init_cdclk(dev);
broxton_ddi_phy_init(dev);
} else {
/*
* The LCPLL register should be turned on by the BIOS. For now
* let's just check its state and print errors in case
* something is wrong. Don't even try to turn it on.
*/
if (val & LCPLL_CD_SOURCE_FCLK)
DRM_ERROR("CDCLK source is not LCPLL\n");
if (val & LCPLL_PLL_DISABLE)
DRM_ERROR("LCPLL is disabled\n");
}
}
void intel_shared_dpll_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;

1
drivers/gpu/drm/i915/intel_drv.h
View File

@ -1066,7 +1066,6 @@ void hsw_fdi_link_train(struct drm_crtc *crtc);
void intel_ddi_init(struct drm_device *dev, enum port port);
enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
void intel_ddi_pll_init(struct drm_device *dev);
void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
enum transcoder cpu_transcoder);