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a=openpgp; fpr=6AFF162D57F4223A8770EF5AF7BF214136F41FAE X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791060720252247065 X-GMAIL-MSGID: 1791060720252247065 Future platforms should not use different compatibles to differentiate between eDP and DP mode. Instead, they should use a single compatible as the IP block is the same. It will be the job of the controller to set the submode of the PHY accordingly. The existing platforms will remain with separate compatibles for each mode. Signed-off-by: Abel Vesa --- drivers/phy/qualcomm/phy-qcom-edp.c | 76 +++++++++++++++++++++++++++---------- 1 file changed, 56 insertions(+), 20 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index 9818d994c68b..e8a17b007695 100644 --- a/drivers/phy/qualcomm/phy-qcom-edp.c +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -69,19 +70,21 @@ #define TXn_TRAN_DRVR_EMP_EN 0x0078 -struct qcom_edp_cfg { - bool is_dp; - - /* DP PHY swing and pre_emphasis tables */ +struct qcom_edp_swing_pre_emph_cfg { const u8 (*swing_hbr_rbr)[4][4]; const u8 (*swing_hbr3_hbr2)[4][4]; const u8 (*pre_emphasis_hbr_rbr)[4][4]; const u8 (*pre_emphasis_hbr3_hbr2)[4][4]; }; +struct qcom_edp_phy_cfg { + bool is_edp; + const struct qcom_edp_swing_pre_emph_cfg *swing_pre_emph_cfg; +}; + struct qcom_edp { struct device *dev; - const struct qcom_edp_cfg *cfg; + const struct qcom_edp_phy_cfg *cfg; struct phy *phy; @@ -97,6 +100,8 @@ struct qcom_edp { struct clk_bulk_data clks[2]; struct regulator_bulk_data supplies[2]; + + bool is_edp; }; static const u8 dp_swing_hbr_rbr[4][4] = { @@ -127,8 +132,7 @@ static const u8 dp_pre_emp_hbr2_hbr3[4][4] = { { 0x04, 0xff, 0xff, 0xff } }; -static const struct qcom_edp_cfg dp_phy_cfg = { - .is_dp = true, +static const struct qcom_edp_swing_pre_emph_cfg dp_phy_swing_pre_emph_cfg = { .swing_hbr_rbr = &dp_swing_hbr_rbr, .swing_hbr3_hbr2 = &dp_swing_hbr2_hbr3, .pre_emphasis_hbr_rbr = &dp_pre_emp_hbr_rbr, @@ -163,18 +167,28 @@ static const u8 edp_pre_emp_hbr2_hbr3[4][4] = { { 0x00, 0xff, 0xff, 0xff } }; -static const struct qcom_edp_cfg edp_phy_cfg = { - .is_dp = false, +static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg = { .swing_hbr_rbr = &edp_swing_hbr_rbr, .swing_hbr3_hbr2 = &edp_swing_hbr2_hbr3, .pre_emphasis_hbr_rbr = &edp_pre_emp_hbr_rbr, .pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3, }; +static const struct qcom_edp_phy_cfg sc7280_dp_phy_cfg = { +}; + +static const struct qcom_edp_phy_cfg sc8280xp_dp_phy_cfg = { + .swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg, +}; + +static const struct qcom_edp_phy_cfg sc8280xp_edp_phy_cfg = { + .is_edp = true, + .swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg, +}; + static int qcom_edp_phy_init(struct phy *phy) { struct qcom_edp *edp = phy_get_drvdata(phy); - const struct qcom_edp_cfg *cfg = edp->cfg; int ret; u8 cfg8; @@ -201,7 +215,12 @@ static int qcom_edp_phy_init(struct phy *phy) DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN, edp->edp + DP_PHY_PD_CTL); - if (cfg && cfg->is_dp) + /* + * TODO: Re-work the conditions around setting the cfg8 value + * when more information becomes available about why this is + * even needed. + */ + if (edp->cfg->swing_pre_emph_cfg && !edp->is_edp) cfg8 = 0xb7; else cfg8 = 0x37; @@ -235,7 +254,7 @@ static int qcom_edp_phy_init(struct phy *phy) static int qcom_edp_set_voltages(struct qcom_edp *edp, const struct phy_configure_opts_dp *dp_opts) { - const struct qcom_edp_cfg *cfg = edp->cfg; + const struct qcom_edp_swing_pre_emph_cfg *cfg = edp->cfg->swing_pre_emph_cfg; unsigned int v_level = 0; unsigned int p_level = 0; u8 ldo_config; @@ -246,6 +265,9 @@ static int qcom_edp_set_voltages(struct qcom_edp *edp, const struct phy_configur if (!cfg) return 0; + if (edp->is_edp) + cfg = &edp_phy_swing_pre_emph_cfg; + for (i = 0; i < dp_opts->lanes; i++) { v_level = max(v_level, dp_opts->voltage[i]); p_level = max(p_level, dp_opts->pre[i]); @@ -262,7 +284,7 @@ static int qcom_edp_set_voltages(struct qcom_edp *edp, const struct phy_configur if (swing == 0xff || emph == 0xff) return -EINVAL; - ldo_config = (cfg && cfg->is_dp) ? 0x1 : 0x0; + ldo_config = edp->is_edp ? 0x0 : 0x1; writel(ldo_config, edp->tx0 + TXn_LDO_CONFIG); writel(swing, edp->tx0 + TXn_TX_DRV_LVL); @@ -448,10 +470,9 @@ static int qcom_edp_set_vco_div(const struct qcom_edp *edp, unsigned long *pixel static int qcom_edp_phy_power_on(struct phy *phy) { const struct qcom_edp *edp = phy_get_drvdata(phy); - const struct qcom_edp_cfg *cfg = edp->cfg; u32 bias0_en, drvr0_en, bias1_en, drvr1_en; unsigned long pixel_freq; - u8 ldo_config; + u8 ldo_config = 0x0; int timeout; int ret; u32 val; @@ -469,7 +490,8 @@ static int qcom_edp_phy_power_on(struct phy *phy) return timeout; - ldo_config = (cfg && cfg->is_dp) ? 0x1 : 0x0; + if (edp->cfg->swing_pre_emph_cfg && !edp->is_edp) + ldo_config = 0x1; writel(ldo_config, edp->tx0 + TXn_LDO_CONFIG); writel(ldo_config, edp->tx1 + TXn_LDO_CONFIG); @@ -590,6 +612,18 @@ static int qcom_edp_phy_power_off(struct phy *phy) return 0; } +static int qcom_edp_phy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{ + struct qcom_edp *edp = phy_get_drvdata(phy); + + if (mode != PHY_MODE_DP) + return -EINVAL; + + edp->is_edp = submode == PHY_SUBMODE_EDP ? true : false; + + return 0; +} + static int qcom_edp_phy_exit(struct phy *phy) { struct qcom_edp *edp = phy_get_drvdata(phy); @@ -605,6 +639,7 @@ static const struct phy_ops qcom_edp_ops = { .configure = qcom_edp_phy_configure, .power_on = qcom_edp_phy_power_on, .power_off = qcom_edp_phy_power_off, + .set_mode = qcom_edp_phy_set_mode, .exit = qcom_edp_phy_exit, .owner = THIS_MODULE, }; @@ -782,6 +817,7 @@ static int qcom_edp_phy_probe(struct platform_device *pdev) edp->dev = dev; edp->cfg = of_device_get_match_data(&pdev->dev); + edp->is_edp = edp->cfg->is_edp; edp->edp = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(edp->edp)) @@ -840,10 +876,10 @@ static int qcom_edp_phy_probe(struct platform_device *pdev) } static const struct of_device_id qcom_edp_phy_match_table[] = { - { .compatible = "qcom,sc7280-edp-phy" }, - { .compatible = "qcom,sc8180x-edp-phy" }, - { .compatible = "qcom,sc8280xp-dp-phy", .data = &dp_phy_cfg }, - { .compatible = "qcom,sc8280xp-edp-phy", .data = &edp_phy_cfg }, + { .compatible = "qcom,sc7280-edp-phy", .data = &sc7280_dp_phy_cfg, }, + { .compatible = "qcom,sc8180x-edp-phy", .data = &sc7280_dp_phy_cfg, }, + { .compatible = "qcom,sc8280xp-dp-phy", .data = &sc8280xp_dp_phy_cfg, }, + { .compatible = "qcom,sc8280xp-edp-phy", .data = &sc8280xp_edp_phy_cfg, }, { } }; MODULE_DEVICE_TABLE(of, qcom_edp_phy_match_table);