On 9/13/2024 5:12 PM, Dmitry Baryshkov wrote:
On Fri, 13 Sept 2024 at 13:38, 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> --- v2: Fixed review comments from Bjorn and Dmitry - Made aux_cfg array as const. --- drivers/phy/qualcomm/phy-qcom-edp.c | 37 ++++++++++++++++++----------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index da2b32fb5b45..bcd5aced9e06 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; + const u8 *aux_cfg; const struct qcom_edp_swing_pre_emph_cfg *swing_pre_emph_cfg; const struct phy_ver_ops *ver_ops; }; @@ -186,11 +187,15 @@ 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 const u8 edp_phy_aux_cfg_v4[10] = { + 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); + u8 aux_cfg[10];Please define 10, so that there are no magic numbers (and less chance of damaging the stack if it gets changed in one place only.
Sure, we will update this in the next version.
int ret; - u8 cfg8; ret = regulator_bulk_enable(ARRAY_SIZE(edp->supplies), edp->supplies); if (ret) @@ -200,6 +205,8 @@ static int qcom_edp_phy_init(struct phy *phy) if (ret) goto out_disable_supplies; + memcpy(aux_cfg, edp->cfg->aux_cfg, sizeof(aux_cfg)); + writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN, edp->edp + DP_PHY_PD_CTL); @@ -222,22 +229,20 @@ 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; + 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(aux_cfg[0], edp->edp + DP_PHY_AUX_CFG0); + writel(aux_cfg[1], edp->edp + DP_PHY_AUX_CFG1); + writel(aux_cfg[2], edp->edp + DP_PHY_AUX_CFG2); + writel(aux_cfg[3], edp->edp + DP_PHY_AUX_CFG3); + writel(aux_cfg[4], edp->edp + DP_PHY_AUX_CFG4); + writel(aux_cfg[5], edp->edp + DP_PHY_AUX_CFG5); + writel(aux_cfg[6], edp->edp + DP_PHY_AUX_CFG6); + writel(aux_cfg[7], edp->edp + DP_PHY_AUX_CFG7); + writel(aux_cfg[8], edp->edp + DP_PHY_AUX_CFG8); + writel(aux_cfg[9], edp->edp + DP_PHY_AUX_CFG9);Replace this with a loop?
Can we use below approach for this : #define DP_PHY_AUX_CFG(n) (0x24 + (0x04 * (n))) for (int i = 0; i < 10; i++) writel(aux_cfg[i], edp->edp + DP_PHY_AUX_CFG(i));
writel(PHY_AUX_STOP_ERR_MASK | PHY_AUX_DEC_ERR_MASK | PHY_AUX_SYNC_ERR_MASK | PHY_AUX_ALIGN_ERR_MASK | @@ -519,16 +524,19 @@ 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 +715,7 @@ 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, .swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg, .ver_ops = &qcom_edp_phy_ops_v6, }; -- 2.17.1
