[Intel-gfx] [PATCH v2 40/50] drm/i915/adl_p: Add PLL Support
Matt Roper
matthew.d.roper at intel.com
Thu Mar 25 18:07:10 UTC 2021
From: Anusha Srivatsa <anusha.srivatsa at intel.com>
The clocks in ALD_P is similar to that of TGL.
The combo PLLs use the same DPLL0, DPLL1 and TBT_PLL.
This patch adds the helper function intel_mg_pll_enable_reg()
which is similar to intel_combo_pll_enable_reg() for being lookup
place for PLL_ENABLE register in combo phy cases.
Bspec: 55409,55316
Cc: Matt Roper <matthew.d.roper at intel.com>
Cc: Clinton Taylor <clinton.a.taylor at intel.com>
Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Cc: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor at intel.com>
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 69 ++++++++++++++-----
drivers/gpu/drm/i915/i915_reg.h | 8 +++
2 files changed, 60 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 268ecf1c000f..618c61d4d3b6 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -147,6 +147,16 @@ void assert_shared_dpll(struct drm_i915_private *dev_priv,
pll->info->name, onoff(state), onoff(cur_state));
}
+static enum tc_port icl_pll_id_to_tc_port(enum intel_dpll_id id)
+{
+ return TC_PORT_1 + id - DPLL_ID_ICL_MGPLL1;
+}
+
+enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port)
+{
+ return tc_port - TC_PORT_1 + DPLL_ID_ICL_MGPLL1;
+}
+
static i915_reg_t
intel_combo_pll_enable_reg(struct drm_i915_private *i915,
struct intel_shared_dpll *pll)
@@ -159,6 +169,19 @@ intel_combo_pll_enable_reg(struct drm_i915_private *i915,
return CNL_DPLL_ENABLE(pll->info->id);
}
+static i915_reg_t
+intel_tc_pll_enable_reg(struct drm_i915_private *i915,
+ struct intel_shared_dpll *pll)
+{
+ const enum intel_dpll_id id = pll->info->id;
+ enum tc_port tc_port = icl_pll_id_to_tc_port(id);
+
+ if (IS_ALDERLAKE_P(i915))
+ return ADLP_PORTTC_PLL_ENABLE(tc_port);
+
+ return MG_PLL_ENABLE(tc_port);
+}
+
/**
* intel_prepare_shared_dpll - call a dpll's prepare hook
* @crtc_state: CRTC, and its state, which has a shared dpll
@@ -3118,16 +3141,6 @@ static void icl_calc_dpll_state(struct drm_i915_private *i915,
pll_state->cfgcr1 |= DPLL_CFGCR1_CENTRAL_FREQ_8400;
}
-static enum tc_port icl_pll_id_to_tc_port(enum intel_dpll_id id)
-{
- return id - DPLL_ID_ICL_MGPLL1;
-}
-
-enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port)
-{
- return tc_port + DPLL_ID_ICL_MGPLL1;
-}
-
static bool icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc,
u32 *target_dco_khz,
struct intel_dpll_hw_state *state,
@@ -3726,12 +3739,14 @@ static bool mg_pll_get_hw_state(struct drm_i915_private *dev_priv,
bool ret = false;
u32 val;
+ i915_reg_t enable_reg = intel_tc_pll_enable_reg(dev_priv, pll);
+
wakeref = intel_display_power_get_if_enabled(dev_priv,
POWER_DOMAIN_DISPLAY_CORE);
if (!wakeref)
return false;
- val = intel_de_read(dev_priv, MG_PLL_ENABLE(tc_port));
+ val = intel_de_read(dev_priv, enable_reg);
if (!(val & PLL_ENABLE))
goto out;
@@ -3795,7 +3810,7 @@ static bool dkl_pll_get_hw_state(struct drm_i915_private *dev_priv,
if (!wakeref)
return false;
- val = intel_de_read(dev_priv, MG_PLL_ENABLE(tc_port));
+ val = intel_de_read(dev_priv, intel_tc_pll_enable_reg(dev_priv, pll));
if (!(val & PLL_ENABLE))
goto out;
@@ -4167,8 +4182,7 @@ static void tbt_pll_enable(struct drm_i915_private *dev_priv,
static void mg_pll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
- i915_reg_t enable_reg =
- MG_PLL_ENABLE(icl_pll_id_to_tc_port(pll->info->id));
+ i915_reg_t enable_reg = intel_tc_pll_enable_reg(dev_priv, pll);
icl_pll_power_enable(dev_priv, pll, enable_reg);
@@ -4247,8 +4261,7 @@ static void tbt_pll_disable(struct drm_i915_private *dev_priv,
static void mg_pll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
- i915_reg_t enable_reg =
- MG_PLL_ENABLE(icl_pll_id_to_tc_port(pll->info->id));
+ i915_reg_t enable_reg = intel_tc_pll_enable_reg(dev_priv, pll);
icl_pll_disable(dev_priv, pll, enable_reg);
}
@@ -4414,6 +4427,26 @@ static const struct intel_dpll_mgr adls_pll_mgr = {
.dump_hw_state = icl_dump_hw_state,
};
+static const struct dpll_info adlp_plls[] = {
+ { "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0, 0 },
+ { "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1, 0 },
+ { "TBT PLL", &tbt_pll_funcs, DPLL_ID_ICL_TBTPLL, 0 },
+ { "TC PLL 1", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL1, 0 },
+ { "TC PLL 2", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL2, 0 },
+ { "TC PLL 3", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL3, 0 },
+ { "TC PLL 4", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL4, 0 },
+ { },
+};
+
+static const struct intel_dpll_mgr adlp_pll_mgr = {
+ .dpll_info = adlp_plls,
+ .get_dplls = icl_get_dplls,
+ .put_dplls = icl_put_dplls,
+ .update_active_dpll = icl_update_active_dpll,
+ .update_ref_clks = icl_update_dpll_ref_clks,
+ .dump_hw_state = icl_dump_hw_state,
+};
+
/**
* intel_shared_dpll_init - Initialize shared DPLLs
* @dev: drm device
@@ -4427,7 +4460,9 @@ void intel_shared_dpll_init(struct drm_device *dev)
const struct dpll_info *dpll_info;
int i;
- if (IS_ALDERLAKE_S(dev_priv))
+ if (IS_ALDERLAKE_P(dev_priv))
+ dpll_mgr = &adlp_pll_mgr;
+ else if (IS_ALDERLAKE_S(dev_priv))
dpll_mgr = &adls_pll_mgr;
else if (IS_DG1(dev_priv))
dpll_mgr = &dg1_pll_mgr;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 393071cde6d4..017bd4817c5b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -10539,6 +10539,14 @@ enum skl_power_gate {
#define DG1_DPLL_ENABLE(pll) _MMIO_PLL3(pll, DPLL0_ENABLE, DPLL1_ENABLE, \
_MG_PLL1_ENABLE, _MG_PLL2_ENABLE)
+/* ADL-P Type C PLL */
+#define PORTTC1_PLL_ENABLE 0x46038
+#define PORTTC2_PLL_ENABLE 0x46040
+
+#define ADLP_PORTTC_PLL_ENABLE(tc_port) _MMIO_PORT((tc_port), \
+ PORTTC1_PLL_ENABLE, \
+ PORTTC2_PLL_ENABLE)
+
#define _MG_REFCLKIN_CTL_PORT1 0x16892C
#define _MG_REFCLKIN_CTL_PORT2 0x16992C
#define _MG_REFCLKIN_CTL_PORT3 0x16A92C
--
2.25.4
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