Re: [PATCH 2/5] phy: qcom: edp: Introduce aux_cfg array for version specific aux settings

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On 9/11/2024 4:04 PM, Dmitry Baryshkov wrote:
On Wed, 11 Sept 2024 at 13:08, Soutrik Mukhopadhyay
<quic_mukhopad@xxxxxxxxxxx> wrote:
In order to support different HW versions, introduce aux_cfg array
to move v4 specific aux configuration settings.

Signed-off-by: Soutrik Mukhopadhyay <quic_mukhopad@xxxxxxxxxxx>
---
  drivers/phy/qualcomm/phy-qcom-edp.c | 34 +++++++++++++++++------------
  1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c
index da2b32fb5b45..0f860a807d1b 100644
--- a/drivers/phy/qualcomm/phy-qcom-edp.c
+++ b/drivers/phy/qualcomm/phy-qcom-edp.c
@@ -90,6 +90,7 @@ struct phy_ver_ops {

  struct qcom_edp_phy_cfg {
         bool is_edp;
+       u8 *aux_cfg;
         const struct qcom_edp_swing_pre_emph_cfg *swing_pre_emph_cfg;
         const struct phy_ver_ops *ver_ops;
  };
@@ -186,11 +187,14 @@ static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg = {
         .pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3,
  };

+static u8 edp_phy_aux_cfg_v4[10] = {
static const u8, please.


Sure, we will change this to "static const u8" in next version patch.




+       0x00, 0x13, 0x24, 0x00, 0x0a, 0x26, 0x0a, 0x03, 0x37, 0x03
+};
+
  static int qcom_edp_phy_init(struct phy *phy)
  {
         struct qcom_edp *edp = phy_get_drvdata(phy);
         int ret;
-       u8 cfg8;

         ret = regulator_bulk_enable(ARRAY_SIZE(edp->supplies), edp->supplies);
         if (ret)
@@ -222,22 +226,20 @@ static int qcom_edp_phy_init(struct phy *phy)
          * even needed.
          */
         if (edp->cfg->swing_pre_emph_cfg && !edp->is_edp)
-               cfg8 = 0xb7;
-       else
-               cfg8 = 0x37;
+               edp->cfg->aux_cfg[8] = 0xb7;

         writel(0xfc, edp->edp + DP_PHY_MODE);

-       writel(0x00, edp->edp + DP_PHY_AUX_CFG0);
-       writel(0x13, edp->edp + DP_PHY_AUX_CFG1);
-       writel(0x24, edp->edp + DP_PHY_AUX_CFG2);
-       writel(0x00, edp->edp + DP_PHY_AUX_CFG3);
-       writel(0x0a, edp->edp + DP_PHY_AUX_CFG4);
-       writel(0x26, edp->edp + DP_PHY_AUX_CFG5);
-       writel(0x0a, edp->edp + DP_PHY_AUX_CFG6);
-       writel(0x03, edp->edp + DP_PHY_AUX_CFG7);
-       writel(cfg8, edp->edp + DP_PHY_AUX_CFG8);
-       writel(0x03, edp->edp + DP_PHY_AUX_CFG9);
+       writel(edp->cfg->aux_cfg[0], edp->edp + DP_PHY_AUX_CFG0);
+       writel(edp->cfg->aux_cfg[1], edp->edp + DP_PHY_AUX_CFG1);
+       writel(edp->cfg->aux_cfg[2], edp->edp + DP_PHY_AUX_CFG2);
+       writel(edp->cfg->aux_cfg[3], edp->edp + DP_PHY_AUX_CFG3);
+       writel(edp->cfg->aux_cfg[4], edp->edp + DP_PHY_AUX_CFG4);
+       writel(edp->cfg->aux_cfg[5], edp->edp + DP_PHY_AUX_CFG5);
+       writel(edp->cfg->aux_cfg[6], edp->edp + DP_PHY_AUX_CFG6);
+       writel(edp->cfg->aux_cfg[7], edp->edp + DP_PHY_AUX_CFG7);
+       writel(edp->cfg->aux_cfg[8], edp->edp + DP_PHY_AUX_CFG8);
+       writel(edp->cfg->aux_cfg[9], edp->edp + DP_PHY_AUX_CFG9);

         writel(PHY_AUX_STOP_ERR_MASK | PHY_AUX_DEC_ERR_MASK |
                PHY_AUX_SYNC_ERR_MASK | PHY_AUX_ALIGN_ERR_MASK |
@@ -519,16 +521,19 @@ static const struct phy_ver_ops qcom_edp_phy_ops_v4 = {
  };

  static const struct qcom_edp_phy_cfg sc7280_dp_phy_cfg = {
+       .aux_cfg = edp_phy_aux_cfg_v4,
         .ver_ops = &qcom_edp_phy_ops_v4,
  };

  static const struct qcom_edp_phy_cfg sc8280xp_dp_phy_cfg = {
+       .aux_cfg = edp_phy_aux_cfg_v4,
         .swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg,
         .ver_ops = &qcom_edp_phy_ops_v4,
  };

  static const struct qcom_edp_phy_cfg sc8280xp_edp_phy_cfg = {
         .is_edp = true,
+       .aux_cfg = edp_phy_aux_cfg_v4,
         .swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg,
         .ver_ops = &qcom_edp_phy_ops_v4,
  };
@@ -707,6 +712,7 @@ static const struct phy_ver_ops qcom_edp_phy_ops_v6 = {
  };

  static struct qcom_edp_phy_cfg x1e80100_phy_cfg = {
+       .aux_cfg = edp_phy_aux_cfg_v4,
Is this correct? Judging by ver_ops, X Elite uses v6 of the PHY, so
maybe it should also use v5 AUX tables?


As per the current implementation, v6 uses v4 aux configuration, so we updated it to v4.



         .swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg,
         .ver_ops = &qcom_edp_phy_ops_v6,
  };
--
2.17.1


--
With best wishes
Dmitry



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