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| author | José Roberto de Souza <jose.souza@intel.com> | 2020-06-25 12:52:52 -0700 |
|---|---|---|
| committer | José Roberto de Souza <jose.souza@intel.com> | 2020-07-07 13:16:31 -0700 |
| commit | 239bef676d8e7118f6d75f208e6d6081ff16a5a1 (patch) | |
| tree | f13613ec5c74f3d786c7fa2c34839ccd684ca91c /drivers/gpu/drm | |
| parent | a3a402840662a7449b1ca0baa58eddf36ef23158 (diff) | |
| download | lwn-239bef676d8e7118f6d75f208e6d6081ff16a5a1.tar.gz lwn-239bef676d8e7118f6d75f208e6d6081ff16a5a1.zip | |
drm/i915/display: Implement new combo phy initialization step
This is new step that was recently added to the combo phy
initialization.
v2:
- using intel_de_rmw()
v3:
- going back to read() modify and write() as group register can't be
read
BSpec: 49291
Cc: Clinton A Taylor <clinton.a.taylor@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200625195252.39312-1-jose.souza@intel.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_combo_phy.c | 25 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 9 |
2 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c index 77b04bb3ec62..eccaa79cb4a9 100644 --- a/drivers/gpu/drm/i915/display/intel_combo_phy.c +++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c @@ -264,6 +264,18 @@ static bool icl_combo_phy_verify_state(struct drm_i915_private *dev_priv, if (!icl_combo_phy_enabled(dev_priv, phy)) return false; + if (INTEL_GEN(dev_priv) >= 12) { + ret &= check_phy_reg(dev_priv, phy, ICL_PORT_TX_DW8_LN0(phy), + ICL_PORT_TX_DW8_ODCC_CLK_SEL | + ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK, + ICL_PORT_TX_DW8_ODCC_CLK_SEL | + ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_DIV2); + + ret &= check_phy_reg(dev_priv, phy, ICL_PORT_PCS_DW1_LN0(phy), + DCC_MODE_SELECT_MASK, + DCC_MODE_SELECT_CONTINUOSLY); + } + ret = cnl_verify_procmon_ref_values(dev_priv, phy); if (phy_is_master(dev_priv, phy)) { @@ -375,6 +387,19 @@ static void icl_combo_phys_init(struct drm_i915_private *dev_priv) intel_de_write(dev_priv, ICL_PHY_MISC(phy), val); skip_phy_misc: + if (INTEL_GEN(dev_priv) >= 12) { + val = intel_de_read(dev_priv, ICL_PORT_TX_DW8_LN0(phy)); + val &= ~ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK; + val |= ICL_PORT_TX_DW8_ODCC_CLK_SEL; + val |= ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_DIV2; + intel_de_write(dev_priv, ICL_PORT_TX_DW8_GRP(phy), val); + + val = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN0(phy)); + val &= ~DCC_MODE_SELECT_MASK; + val |= DCC_MODE_SELECT_CONTINUOSLY; + intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), val); + } + cnl_set_procmon_ref_values(dev_priv, phy); if (phy_is_master(dev_priv, phy)) { diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5bee4e212866..86a23ced051b 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1974,6 +1974,8 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define ICL_PORT_PCS_DW1_AUX(phy) _MMIO(_ICL_PORT_PCS_DW_AUX(1, phy)) #define ICL_PORT_PCS_DW1_GRP(phy) _MMIO(_ICL_PORT_PCS_DW_GRP(1, phy)) #define ICL_PORT_PCS_DW1_LN0(phy) _MMIO(_ICL_PORT_PCS_DW_LN(1, 0, phy)) +#define DCC_MODE_SELECT_MASK (0x3 << 20) +#define DCC_MODE_SELECT_CONTINUOSLY (0x3 << 20) #define COMMON_KEEPER_EN (1 << 26) #define LATENCY_OPTIM_MASK (0x3 << 2) #define LATENCY_OPTIM_VAL(x) ((x) << 2) @@ -2072,6 +2074,13 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define N_SCALAR(x) ((x) << 24) #define N_SCALAR_MASK (0x7F << 24) +#define ICL_PORT_TX_DW8_AUX(phy) _MMIO(_ICL_PORT_TX_DW_AUX(8, phy)) +#define ICL_PORT_TX_DW8_GRP(phy) _MMIO(_ICL_PORT_TX_DW_GRP(8, phy)) +#define ICL_PORT_TX_DW8_LN0(phy) _MMIO(_ICL_PORT_TX_DW_LN(8, 0, phy)) +#define ICL_PORT_TX_DW8_ODCC_CLK_SEL REG_BIT(31) +#define ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK REG_GENMASK(30, 29) +#define ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_DIV2 REG_FIELD_PREP(ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK, 0x1) + #define _ICL_DPHY_CHKN_REG 0x194 #define ICL_DPHY_CHKN(port) _MMIO(_ICL_COMBOPHY(port) + _ICL_DPHY_CHKN_REG) #define ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP REG_BIT(7) |