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phy: qcom-qmp-usb: drop multi-PHY support
Each USB QMP PHY device provides just a single UFS PHY. Drop support for handling multiple child PHYs. Use phy->init_count to check if the PHY was initialized rather than duplicating this count. Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220607213203.2819885-27-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
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1da7115efa
commit
65753f38f5
1 changed files with 5 additions and 32 deletions
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@ -1440,8 +1440,6 @@ struct qmp_phy {
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* @vregs: regulator supplies bulk data
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* @vregs: regulator supplies bulk data
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*
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*
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* @phys: array of per-lane phy descriptors
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* @phys: array of per-lane phy descriptors
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* @phy_mutex: mutex lock for PHY common block initialization
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* @init_count: phy common block initialization count
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*/
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*/
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struct qcom_qmp {
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struct qcom_qmp {
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struct device *dev;
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struct device *dev;
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@ -1452,9 +1450,6 @@ struct qcom_qmp {
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struct regulator_bulk_data *vregs;
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struct regulator_bulk_data *vregs;
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struct qmp_phy **phys;
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struct qmp_phy **phys;
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struct mutex phy_mutex;
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int init_count;
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};
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};
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static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
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static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
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@ -2016,17 +2011,11 @@ static int qcom_qmp_phy_usb_com_init(struct qmp_phy *qphy)
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void __iomem *dp_com = qmp->dp_com;
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void __iomem *dp_com = qmp->dp_com;
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int ret, i;
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int ret, i;
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mutex_lock(&qmp->phy_mutex);
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if (qmp->init_count++) {
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mutex_unlock(&qmp->phy_mutex);
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return 0;
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}
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/* turn on regulator supplies */
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/* turn on regulator supplies */
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ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
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ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
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if (ret) {
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if (ret) {
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dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret);
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dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret);
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goto err_unlock;
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return ret;
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}
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}
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for (i = 0; i < cfg->num_resets; i++) {
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for (i = 0; i < cfg->num_resets; i++) {
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@ -2082,8 +2071,6 @@ static int qcom_qmp_phy_usb_com_init(struct qmp_phy *qphy)
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qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL,
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qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL,
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cfg->pwrdn_ctrl);
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cfg->pwrdn_ctrl);
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mutex_unlock(&qmp->phy_mutex);
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return 0;
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return 0;
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err_assert_reset:
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err_assert_reset:
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@ -2091,8 +2078,6 @@ static int qcom_qmp_phy_usb_com_init(struct qmp_phy *qphy)
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reset_control_assert(qmp->resets[i]);
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reset_control_assert(qmp->resets[i]);
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err_disable_regulators:
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err_disable_regulators:
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regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
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regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
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err_unlock:
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mutex_unlock(&qmp->phy_mutex);
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return ret;
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return ret;
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}
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}
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@ -2103,12 +2088,6 @@ static int qcom_qmp_phy_usb_com_exit(struct qmp_phy *qphy)
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const struct qmp_phy_cfg *cfg = qphy->cfg;
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const struct qmp_phy_cfg *cfg = qphy->cfg;
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int i = cfg->num_resets;
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int i = cfg->num_resets;
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mutex_lock(&qmp->phy_mutex);
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if (--qmp->init_count) {
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mutex_unlock(&qmp->phy_mutex);
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return 0;
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}
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while (--i >= 0)
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while (--i >= 0)
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reset_control_assert(qmp->resets[i]);
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reset_control_assert(qmp->resets[i]);
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@ -2116,8 +2095,6 @@ static int qcom_qmp_phy_usb_com_exit(struct qmp_phy *qphy)
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regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
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regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
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mutex_unlock(&qmp->phy_mutex);
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return 0;
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return 0;
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}
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}
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@ -2332,7 +2309,7 @@ static int __maybe_unused qcom_qmp_phy_usb_runtime_suspend(struct device *dev)
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if (cfg->type != PHY_TYPE_USB3)
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if (cfg->type != PHY_TYPE_USB3)
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return 0;
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return 0;
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if (!qmp->init_count) {
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if (!qphy->phy->init_count) {
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dev_vdbg(dev, "PHY not initialized, bailing out\n");
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dev_vdbg(dev, "PHY not initialized, bailing out\n");
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return 0;
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return 0;
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}
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}
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@ -2358,7 +2335,7 @@ static int __maybe_unused qcom_qmp_phy_usb_runtime_resume(struct device *dev)
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if (cfg->type != PHY_TYPE_USB3)
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if (cfg->type != PHY_TYPE_USB3)
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return 0;
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return 0;
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if (!qmp->init_count) {
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if (!qphy->phy->init_count) {
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dev_vdbg(dev, "PHY not initialized, bailing out\n");
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dev_vdbg(dev, "PHY not initialized, bailing out\n");
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return 0;
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return 0;
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}
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}
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@ -2673,7 +2650,7 @@ static int qcom_qmp_phy_usb_probe(struct platform_device *pdev)
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struct phy_provider *phy_provider;
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struct phy_provider *phy_provider;
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void __iomem *serdes;
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void __iomem *serdes;
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const struct qmp_phy_cfg *cfg = NULL;
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const struct qmp_phy_cfg *cfg = NULL;
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int num, id, expected_phys;
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int num, id;
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int ret;
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int ret;
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qmp = devm_kzalloc(dev, sizeof(*qmp), GFP_KERNEL);
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qmp = devm_kzalloc(dev, sizeof(*qmp), GFP_KERNEL);
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@ -2700,10 +2677,6 @@ static int qcom_qmp_phy_usb_probe(struct platform_device *pdev)
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return PTR_ERR(qmp->dp_com);
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return PTR_ERR(qmp->dp_com);
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}
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}
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expected_phys = cfg->nlanes;
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mutex_init(&qmp->phy_mutex);
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ret = qcom_qmp_phy_usb_clk_init(dev, cfg);
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ret = qcom_qmp_phy_usb_clk_init(dev, cfg);
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if (ret)
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if (ret)
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return ret;
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return ret;
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@ -2722,7 +2695,7 @@ static int qcom_qmp_phy_usb_probe(struct platform_device *pdev)
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num = of_get_available_child_count(dev->of_node);
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num = of_get_available_child_count(dev->of_node);
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/* do we have a rogue child node ? */
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/* do we have a rogue child node ? */
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if (num > expected_phys)
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if (num > 1)
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return -EINVAL;
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return -EINVAL;
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qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL);
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qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL);
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