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X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add definition for Embedded DisplayPort (eDP) phy type. Signed-off-by: Abel Vesa Acked-by: Krzysztof Kozlowski --- include/dt-bindings/phy/phy.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/dt-bindings/phy/phy.h b/include/dt-bindings/phy/phy.h index 6b901b342348..b1a64508d937 100644 --- a/include/dt-bindings/phy/phy.h +++ b/include/dt-bindings/phy/phy.h @@ -23,5 +23,6 @@ #define PHY_TYPE_DPHY 10 #define PHY_TYPE_CPHY 11 #define PHY_TYPE_USXGMII 12 +#define PHY_TYPE_EDP 13 #endif /* _DT_BINDINGS_PHY */ From patchwork Tue Dec 19 20:55:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 13499064 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2D815C41535 for ; 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Tue, 19 Dec 2023 12:55:36 -0800 (PST) From: Abel Vesa Date: Tue, 19 Dec 2023 22:55:23 +0200 Subject: [PATCH 2/3] phy: Add PHY Embedded DisplayPort mode MIME-Version: 1.0 Message-Id: <20231219-x1e80100-phy-edp-compatible-refactor-v1-2-f9e77752953d@linaro.org> References: <20231219-x1e80100-phy-edp-compatible-refactor-v1-0-f9e77752953d@linaro.org> In-Reply-To: <20231219-x1e80100-phy-edp-compatible-refactor-v1-0-f9e77752953d@linaro.org> To: Vinod Koul , Kishon Vijay Abraham I , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dmitry Baryshkov , Johan Hovold Cc: linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, Abel Vesa X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=548; i=abel.vesa@linaro.org; h=from:subject:message-id; bh=iGeFTqzs15DB20OSaW0GNTWB3LDTKk0WKgnlPfHO7SI=; b=owEBbQKS/ZANAwAKARtfRMkAlRVWAcsmYgBlggNDVuSQOMzcFMsNOLBAexyTcim0YGusXvB5u jtV0tRRs/SJAjMEAAEKAB0WIQRO8+4RTnqPKsqn0bgbX0TJAJUVVgUCZYIDQwAKCRAbX0TJAJUV VjEmD/0a8VbhWcTkFszcFPFquWH9IPyH5K5oDIV/dPNZ+44skMr2+ti/Y0qAXs+79xVP9Q47tAX zrm9/fsKOiSLR2MQsomKjxJMiN+bsM5KE9IOHAX1mtuoS/lblh5zfxGU4s2hPl2lqp/sdzIs2zP zrDYCN+vUzxGOamzFxO1sHVCClM96jZByM8H70ja8QpSlFKE2HVMESjKGWhD0Z9fCNEuNib4jj/ YZkqVVrgHVcUMbNB9+AEz7S40HP593Qoy+4mQieuEd/V0kKzN2vczXWsrn7XSY4NhIXqMWRfGUk vidV6VL5SPxGO/U32RkksOEoXWd8l/SvOE3afVq0xH2YuijF9BGRWxvhOPDV77mzTihzEWUisNP qiKRMY68h2iFbrUk9VprYmXNNHXNf7Xus9hcHG4i6l9p5LsFW+fsmTMHyjYxSjph/OGo+oyqvUB nJ0+8lL62dk+5Q7aawayJBsDvUjd7EapvNcVhaF4WnBLOdUmH/BwcgOXoR9sa0TQYYMHTCzsiiV 29Qqv+OOHcUhVKro7liyd4MjyhfoYgYKMlrX0GbFNrgs7Td/BmbBN9yHF9P2sGy344D+/F96O2X 7C5ahwOePjOVySntjBcsLujiVKUuFfCGAe0Kv3mzuip60VP7n/AqO2w6VEJZsPz4YnN20o6SVn0 VxTfcHo0CtsRy0A== X-Developer-Key: i=abel.vesa@linaro.org; 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X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add definition for Embedded DisplayPort (eDP) phy mode. Signed-off-by: Abel Vesa --- include/linux/phy/phy.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index f6d607ef0e80..bea532711906 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -42,7 +42,8 @@ enum phy_mode { PHY_MODE_MIPI_DPHY, PHY_MODE_SATA, PHY_MODE_LVDS, - PHY_MODE_DP + PHY_MODE_DP, + PHY_MODE_EDP }; enum phy_media { From patchwork Tue Dec 19 20:55:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 13499065 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7A899C46CD7 for ; Tue, 19 Dec 2023 20:55:43 +0000 (UTC) DKIM-Signature: v=1; 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a=openpgp; fpr=6AFF162D57F4223A8770EF5AF7BF214136F41FAE X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231219_125539_910969_125AAF5D X-CRM114-Status: GOOD ( 20.74 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org 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, and use the 'phys' (controller) DT property to pass the phy mode. Rework the device match config data so that it only keeps the different knobs rather than swing and pre-emphasis tables. The existing platforms will remain with separate compatibles for each mode. Signed-off-by: Abel Vesa --- drivers/phy/qualcomm/phy-qcom-edp.c | 89 ++++++++++++++++++++++++++++--------- 1 file changed, 67 insertions(+), 22 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index 8e5078304646..c70e6eae16ba 100644 --- a/drivers/phy/qualcomm/phy-qcom-edp.c +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -68,19 +68,22 @@ #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 { + int type; + bool needs_swing_pre_emph_cfg; +}; + struct qcom_edp { struct device *dev; - const struct qcom_edp_cfg *cfg; + const struct qcom_edp_phy_cfg *cfg; + const struct qcom_edp_swing_pre_emph_cfg *swing_pre_emph_cfg; struct phy *phy; @@ -96,6 +99,8 @@ struct qcom_edp { struct clk_bulk_data clks[2]; struct regulator_bulk_data supplies[2]; + + bool is_dp; }; static const u8 dp_swing_hbr_rbr[4][4] = { @@ -126,8 +131,7 @@ 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, @@ -162,18 +166,30 @@ 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 struct qcom_edp_phy_cfg sc7280_dp_phy_cfg = { + .type = PHY_TYPE_DP, +}; + +static struct qcom_edp_phy_cfg sc8280xp_dp_phy_cfg = { + .type = PHY_TYPE_DP, + .needs_swing_pre_emph_cfg = true, +}; + +static struct qcom_edp_phy_cfg sc8280xp_edp_phy_cfg = { + .type = PHY_TYPE_EDP, + .needs_swing_pre_emph_cfg = true, +}; + 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; @@ -200,7 +216,7 @@ 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) + if (edp->cfg->needs_swing_pre_emph_cfg && edp->is_dp) cfg8 = 0xb7; else cfg8 = 0x37; @@ -234,7 +250,7 @@ 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->swing_pre_emph_cfg; unsigned int v_level = 0; unsigned int p_level = 0; u8 ldo_config; @@ -242,7 +258,7 @@ static int qcom_edp_set_voltages(struct qcom_edp *edp, const struct phy_configur u8 emph; int i; - if (!cfg) + if (!edp->cfg->needs_swing_pre_emph_cfg) return 0; for (i = 0; i < dp_opts->lanes; i++) { @@ -261,7 +277,7 @@ 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_dp ? 0x1 : 0x0; writel(ldo_config, edp->tx0 + TXn_LDO_CONFIG); writel(swing, edp->tx0 + TXn_TX_DRV_LVL); @@ -447,10 +463,9 @@ 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; @@ -468,7 +483,8 @@ static int qcom_edp_phy_power_on(struct phy *phy) return timeout; - ldo_config = (cfg && cfg->is_dp) ? 0x1 : 0x0; + if (edp->cfg->needs_swing_pre_emph_cfg && edp->is_dp) + ldo_config = 0x1; writel(ldo_config, edp->tx0 + TXn_LDO_CONFIG); writel(ldo_config, edp->tx1 + TXn_LDO_CONFIG); @@ -768,6 +784,33 @@ static int qcom_edp_clks_register(struct qcom_edp *edp, struct device_node *np) return devm_of_clk_add_hw_provider(edp->dev, of_clk_hw_onecell_get, data); } +static struct phy *qcom_edp_phy_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct qcom_edp *edp = dev_get_drvdata(dev); + int type = edp->cfg->type; + + if (args->args_count == 1) + type = args->args[0]; + + if (type != PHY_TYPE_DP && type != PHY_TYPE_EDP) + return ERR_PTR(-EINVAL); + + if (type == PHY_TYPE_EDP) { + edp->phy->attrs.mode = PHY_MODE_EDP; + } else { + edp->phy->attrs.mode = PHY_MODE_DP; + edp->is_dp = true; + } + + if (edp->cfg->needs_swing_pre_emph_cfg) + edp->swing_pre_emph_cfg = edp->is_dp ? + &dp_phy_swing_pre_emph_cfg: + &edp_phy_swing_pre_emph_cfg; + + return edp->phy; +} + static int qcom_edp_phy_probe(struct platform_device *pdev) { struct phy_provider *phy_provider; @@ -832,17 +875,19 @@ static int qcom_edp_phy_probe(struct platform_device *pdev) return PTR_ERR(edp->phy); } + dev_set_drvdata(edp->dev, edp); phy_set_drvdata(edp->phy, edp); - phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + phy_provider = devm_of_phy_provider_register(dev, qcom_edp_phy_xlate); + return PTR_ERR_OR_ZERO(phy_provider); } 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);