linux-kernel - [PATCH v11 2/3] phy: qcom-qmp: add regulator_set

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Date:   Fri, 20 May 2022 14:27:07 -0700
From:   Kuogee Hsieh <quic_khsieh@...cinc.com>
To:     <dri-devel@...ts.freedesktop.org>, <robdclark@...il.com>,
        <sean@...rly.run>, <swboyd@...omium.org>, <dianders@...omium.org>,
        <vkoul@...nel.org>, <daniel@...ll.ch>, <airlied@...ux.ie>,
        <agross@...nel.org>, <dmitry.baryshkov@...aro.org>,
        <bjorn.andersson@...aro.org>
CC:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        <quic_abhinavk@...cinc.com>, <quic_aravindh@...cinc.com>,
        <quic_sbillaka@...cinc.com>, <freedreno@...ts.freedesktop.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v11 2/3] phy: qcom-qmp: add regulator_set_load to dp phy

This patch add regulator_set_load() before enable regulator at
DP phy driver.

Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index b144ae1..a93e153 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -3130,6 +3130,7 @@ struct qmp_phy_cfg {
 	int num_resets;
 	/* regulators to be requested */
 	const char * const *vreg_list;
+	const unsigned int *vreg_enable_load;
 	int num_vregs;
 
 	/* array of registers with different offsets */
@@ -3346,6 +3347,10 @@ static const char * const qmp_phy_vreg_l[] = {
 	"vdda-phy", "vdda-pll",
 };
 
+static const unsigned int qmp_phy_vreg_enable_load[] = {
+	21800, 36000
+};
+
 static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = {
 	.type			= PHY_TYPE_USB3,
 	.nlanes			= 1,
@@ -3711,6 +3716,7 @@ static const struct qmp_phy_cfg sc7180_usb3phy_cfg = {
 	.reset_list		= sc7180_usb3phy_reset_l,
 	.num_resets		= ARRAY_SIZE(sc7180_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
+	.vreg_enable_load	= qmp_phy_vreg_enable_load,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v3_usb3phy_regs_layout,
 
@@ -3749,6 +3755,7 @@ static const struct qmp_phy_cfg sc7180_dpphy_cfg = {
 	.reset_list		= sc7180_usb3phy_reset_l,
 	.num_resets		= ARRAY_SIZE(sc7180_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
+	.vreg_enable_load	= qmp_phy_vreg_enable_load,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v3_usb3phy_regs_layout,
 
@@ -3940,6 +3947,7 @@ static const struct qmp_phy_cfg sm8150_usb3phy_cfg = {
 	.reset_list		= msm8996_usb3phy_reset_l,
 	.num_resets		= ARRAY_SIZE(msm8996_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
+	.vreg_enable_load	= qmp_phy_vreg_enable_load,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v4_usb3phy_regs_layout,
 
@@ -4009,6 +4017,7 @@ static const struct qmp_phy_cfg sc8180x_dpphy_cfg = {
 	.reset_list		= sc7180_usb3phy_reset_l,
 	.num_resets		= ARRAY_SIZE(sc7180_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
+	.vreg_enable_load	= qmp_phy_vreg_enable_load,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v3_usb3phy_regs_layout,
 
@@ -4072,6 +4081,7 @@ static const struct qmp_phy_cfg sm8250_usb3phy_cfg = {
 	.reset_list		= msm8996_usb3phy_reset_l,
 	.num_resets		= ARRAY_SIZE(msm8996_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
+	.vreg_enable_load	= qmp_phy_vreg_enable_load,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v4_usb3phy_regs_layout,
 
@@ -4139,6 +4149,7 @@ static const struct qmp_phy_cfg sm8250_dpphy_cfg = {
 	.reset_list		= msm8996_usb3phy_reset_l,
 	.num_resets		= ARRAY_SIZE(msm8996_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
+	.vreg_enable_load	= qmp_phy_vreg_enable_load,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v4_usb3phy_regs_layout,
 
@@ -6107,7 +6118,7 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 	const struct qmp_phy_cfg *usb_cfg = NULL;
 	const struct qmp_phy_cfg *dp_cfg = NULL;
 	int num, id, expected_phys;
-	int ret;
+	int ret, i;
 
 	qmp = devm_kzalloc(dev, sizeof(*qmp), GFP_KERNEL);
 	if (!qmp)
@@ -6175,6 +6186,18 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	if (cfg->vreg_enable_load) {
+		for (i = 0; i < cfg->num_vregs; i++) {
+			ret = regulator_set_load(qmp->vregs[i].consumer,
+						cfg->vreg_enable_load[i]);
+			if (ret) {
+				dev_err(dev, "failed to set load at %s\n",
+						qmp->vregs[i].supply);
+				return ret;
+			}
+		}
+	}
+
 	num = of_get_available_child_count(dev->of_node);
 	/* do we have a rogue child node ? */
 	if (num > expected_phys)
-- 
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