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phy: qcom: qmp-usbc: Add TCSR parsing and PHY mode setting

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Extend TCSR parsing to read optional dp_phy_mode_reg and add
qmp_usbc_set_phy_mode() to switch between USB and DP modes when
supported.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Xiangxu Yin <xiangxu.yin@oss.qualcomm.com>
Link: https://patch.msgid.link/20251215-add-displayport-support-for-qcs615-platform-v8-8-cbc72c88a44e@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Xiangxu Yin 2025-12-15 20:42:04 +08:00 committed by Vinod Koul
parent cb22558225
commit 9ab26cb7e6
1 changed files with 19 additions and 6 deletions
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25
drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
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@ -529,6 +529,12 @@ static const struct qmp_phy_cfg qcs615_usb3phy_cfg = {
.regs = qmp_v3_usb3phy_regs_layout_qcm2290,
};
static void qmp_usbc_set_phy_mode(struct qmp_usbc *qmp, bool is_dp)
{
if (qmp->tcsr_map && qmp->dp_phy_mode_reg)
regmap_write(qmp->tcsr_map, qmp->dp_phy_mode_reg, is_dp);
}
static int qmp_usbc_com_init(struct phy *phy)
{
struct qmp_usbc *qmp = phy_get_drvdata(phy);
@ -669,6 +675,8 @@ static int qmp_usbc_usb_enable(struct phy *phy)
if (ret)
goto out_unlock;
qmp_usbc_set_phy_mode(qmp, false);
ret = qmp_usbc_usb_power_on(phy);
if (ret) {
qmp_usbc_com_exit(phy);
@ -1112,6 +1120,7 @@ static int qmp_usbc_typec_switch_set(struct typec_switch_dev *sw,
qmp_usbc_com_exit(qmp->usb_phy);
qmp_usbc_com_init(qmp->usb_phy);
qmp_usbc_set_phy_mode(qmp, false);
qmp_usbc_usb_power_on(qmp->usb_phy);
}
@ -1262,15 +1271,16 @@ static int qmp_usbc_parse_dt(struct qmp_usbc *qmp)
return 0;
}
static int qmp_usbc_parse_vls_clamp(struct qmp_usbc *qmp)
static int qmp_usbc_parse_tcsr(struct qmp_usbc *qmp)
{
struct of_phandle_args tcsr_args;
struct device *dev = qmp->dev;
int ret;
int ret, args_count;
/* for backwards compatibility ignore if there is no property */
ret = of_parse_phandle_with_fixed_args(dev->of_node, "qcom,tcsr-reg", 1, 0,
&tcsr_args);
args_count = of_property_count_u32_elems(dev->of_node, "qcom,tcsr-reg");
args_count = args_count - 1;
ret = of_parse_phandle_with_fixed_args(dev->of_node, "qcom,tcsr-reg",
args_count, 0, &tcsr_args);
if (ret == -ENOENT)
return 0;
else if (ret < 0)
@ -1283,6 +1293,9 @@ static int qmp_usbc_parse_vls_clamp(struct qmp_usbc *qmp)
qmp->vls_clamp_reg = tcsr_args.args[0];
if (args_count > 1)
qmp->dp_phy_mode_reg = tcsr_args.args[1];
return 0;
}
@ -1318,7 +1331,7 @@ static int qmp_usbc_probe(struct platform_device *pdev)
if (ret)
return ret;
ret = qmp_usbc_parse_vls_clamp(qmp);
ret = qmp_usbc_parse_tcsr(qmp);
if (ret)
return ret;