After the qmp phy driver was split it looks like 5.15.y stable kernels aren't getting fixes like commit 7a7d86d14d07 ("phy: qcom-qmp-combo: fix broken power on") which is tagged for stable 5.10. Trogdor boards use the qmp phy on 5.15.y kernels, so I backported the fixes I could find that looked like we may possibly trip over at some point.
USB and DP work on my Trogdor.Lazor board with this set.
Changes from v2 (https://lore.kernel.org/r/20230113204548.578798-1-swboyd@chromium.org): * Keep conditional that can't be removed from last patch * Rebase to latest 5.15.y stable tree
Changes from v1 (https://lore.kernel.org/r/20230113005405.3992011-1-swboyd@chromium.org): * New patch for memleak on probe deferal to avoid compat issues * Update "fix broken power on" patch for pcie/ufs phy
Johan Hovold (5): phy: qcom-qmp-combo: disable runtime PM on unbind phy: qcom-qmp-combo: fix memleak on probe deferral phy: qcom-qmp-usb: fix memleak on probe deferral phy: qcom-qmp-combo: fix broken power on phy: qcom-qmp-combo: fix runtime suspend
drivers/phy/qualcomm/phy-qcom-qmp.c | 89 ++++++++++++++++++++--------- 1 file changed, 61 insertions(+), 28 deletions(-)
Cc: Johan Hovold johan+linaro@kernel.org Cc: Dmitry Baryshkov dmitry.baryshkov@linaro.org Cc: Vinod Koul vkoul@kernel.org
base-commit: 9cf4111cdf9420fa99792ae16c8de23242bb2e0b
From: Johan Hovold johan+linaro@kernel.org
commit 4382d518d1887e62234560ea08a0203d11d28cc1 upstream.
Make sure to disable runtime PM also on driver unbind.
Fixes: ac0d239936bd ("phy: qcom-qmp: Add support for runtime PM"). Signed-off-by: Johan Hovold johan+linaro@kernel.org Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Link: https://lore.kernel.org/r/20220907110728.19092-2-johan+linaro@kernel.org Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/phy/qualcomm/phy-qcom-qmp.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index a9687e040960..7b7557c35af6 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -5740,7 +5740,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) return -ENOMEM;
pm_runtime_set_active(dev); - pm_runtime_enable(dev); + ret = devm_pm_runtime_enable(dev); + if (ret) + return ret; /* * Prevent runtime pm from being ON by default. Users can enable * it using power/control in sysfs. @@ -5790,13 +5792,10 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) dev_info(dev, "Registered Qcom-QMP phy\n"); - else - pm_runtime_disable(dev);
return PTR_ERR_OR_ZERO(phy_provider);
err_node_put: - pm_runtime_disable(dev); of_node_put(child); return ret; }
From: Johan Hovold johan+linaro@kernel.org
commit 2de8a325b1084330ae500380cc27edc39f488c30 upstream.
Switch to using the device-managed of_iomap helper to avoid leaking memory on probe deferral and driver unbind.
Note that this helper checks for already reserved regions and may fail if there are multiple devices claiming the same memory.
Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets") Signed-off-by: Johan Hovold johan+linaro@kernel.org Link: https://lore.kernel.org/r/20220916102340.11520-5-johan+linaro@kernel.org Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/phy/qualcomm/phy-qcom-qmp.c | 32 +++++++++++++++-------------- 1 file changed, 17 insertions(+), 15 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 7b7557c35af6..c6f860ce3d99 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -5410,17 +5410,17 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id, * For dual lane PHYs: tx2 -> 3, rx2 -> 4, pcs_misc (optional) -> 5 * For single lane PHYs: pcs_misc (optional) -> 3. */ - qphy->tx = of_iomap(np, 0); - if (!qphy->tx) - return -ENOMEM; + qphy->tx = devm_of_iomap(dev, np, 0, NULL); + if (IS_ERR(qphy->tx)) + return PTR_ERR(qphy->tx);
- qphy->rx = of_iomap(np, 1); - if (!qphy->rx) - return -ENOMEM; + qphy->rx = devm_of_iomap(dev, np, 1, NULL); + if (IS_ERR(qphy->rx)) + return PTR_ERR(qphy->rx);
- qphy->pcs = of_iomap(np, 2); - if (!qphy->pcs) - return -ENOMEM; + qphy->pcs = devm_of_iomap(dev, np, 2, NULL); + if (IS_ERR(qphy->pcs)) + return PTR_ERR(qphy->pcs);
/* * If this is a dual-lane PHY, then there should be registers for the @@ -5429,9 +5429,9 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id, * offset from the first lane. */ if (cfg->is_dual_lane_phy) { - qphy->tx2 = of_iomap(np, 3); - qphy->rx2 = of_iomap(np, 4); - if (!qphy->tx2 || !qphy->rx2) { + qphy->tx2 = devm_of_iomap(dev, np, 3, NULL); + qphy->rx2 = devm_of_iomap(dev, np, 4, NULL); + if (IS_ERR(qphy->tx2) || IS_ERR(qphy->rx2)) { dev_warn(dev, "Underspecified device tree, falling back to legacy register regions\n");
@@ -5441,15 +5441,17 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id, qphy->rx2 = qphy->rx + QMP_PHY_LEGACY_LANE_STRIDE;
} else { - qphy->pcs_misc = of_iomap(np, 5); + qphy->pcs_misc = devm_of_iomap(dev, np, 5, NULL); }
} else { - qphy->pcs_misc = of_iomap(np, 3); + qphy->pcs_misc = devm_of_iomap(dev, np, 3, NULL); }
- if (!qphy->pcs_misc) + if (IS_ERR(qphy->pcs_misc)) { dev_vdbg(dev, "PHY pcs_misc-reg not used\n"); + qphy->pcs_misc = NULL; + }
/* * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3
From: Johan Hovold johan+linaro@kernel.org
commit a5d6b1ac56cbd6b5850a3a54e35f1cb71e8e8cdd upstream.
Switch to using the device-managed of_iomap helper to avoid leaking memory on probe deferral and driver unbind.
Note that this helper checks for already reserved regions and may fail if there are multiple devices claiming the same memory.
Two bindings currently rely on overlapping mappings for the PCS region so fallback to non-exclusive mappings for those for now.
Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets") Signed-off-by: Johan Hovold johan+linaro@kernel.org Link: https://lore.kernel.org/r/20220916102340.11520-7-johan+linaro@kernel.org Signed-off-by: Vinod Koul vkoul@kernel.org [swboyd@chromium.org: Backport to pre-split driver] Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/phy/qualcomm/phy-qcom-qmp.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index c6f860ce3d99..ee4fd7afcea2 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -5387,6 +5387,21 @@ static void qcom_qmp_reset_control_put(void *data) reset_control_put(data); }
+static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np, + int index, bool exclusive) +{ + struct resource res; + + if (!exclusive) { + if (of_address_to_resource(np, index, &res)) + return IOMEM_ERR_PTR(-EINVAL); + + return devm_ioremap(dev, res.start, resource_size(&res)); + } + + return devm_of_iomap(dev, np, index, NULL); +} + static int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id, void __iomem *serdes, const struct qmp_phy_cfg *cfg) @@ -5396,8 +5411,18 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id, struct qmp_phy *qphy; const struct phy_ops *ops; char prop_name[MAX_PROP_NAME]; + bool exclusive = true; int ret;
+ /* + * FIXME: These bindings should be fixed to not rely on overlapping + * mappings for PCS. + */ + if (of_device_is_compatible(dev->of_node, "qcom,sdx65-qmp-usb3-uni-phy")) + exclusive = false; + if (of_device_is_compatible(dev->of_node, "qcom,sm8350-qmp-usb3-uni-phy")) + exclusive = false; + qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL); if (!qphy) return -ENOMEM; @@ -5418,7 +5443,7 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id, if (IS_ERR(qphy->rx)) return PTR_ERR(qphy->rx);
- qphy->pcs = devm_of_iomap(dev, np, 2, NULL); + qphy->pcs = qmp_usb_iomap(dev, np, 2, exclusive); if (IS_ERR(qphy->pcs)) return PTR_ERR(qphy->pcs);
From: Johan Hovold johan+linaro@kernel.org
commit 7a7d86d14d073dfa3429c550667a8e78b99edbd4 upstream.
The PHY is powered on during phy-init by setting the SW_PWRDN bit in the COM_POWER_DOWN_CTRL register and then setting the same bit in the in the PCS_POWER_DOWN_CONTROL register that belongs to the USB part of the PHY.
Currently, whether power on succeeds depends on probe order and having the USB part of the PHY be initialised first. In case the DP part of the PHY is instead initialised first, the intended power on of the USB block results in a corrupted DP_PHY register (e.g. DP_PHY_AUX_CFG8).
Add a pointer to the USB part of the PHY to the driver data and use that to power on the PHY also if the DP part of the PHY is initialised first.
Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy") Cc: stable@vger.kernel.org # 5.10 Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Signed-off-by: Johan Hovold johan+linaro@kernel.org Link: https://lore.kernel.org/r/20221114081346.5116-5-johan+linaro@kernel.org Signed-off-by: Vinod Koul vkoul@kernel.org [swboyd@chromium.org: Backport to pre-split driver, also set usb_phy for pcie/ufs] Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/phy/qualcomm/phy-qcom-qmp.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index ee4fd7afcea2..b8646eaf1767 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -2919,6 +2919,7 @@ struct qcom_qmp { struct regulator_bulk_data *vregs;
struct qmp_phy **phys; + struct qmp_phy *usb_phy;
struct mutex phy_mutex; int init_count; @@ -4554,7 +4555,7 @@ static int qcom_qmp_phy_com_init(struct qmp_phy *qphy) struct qcom_qmp *qmp = qphy->qmp; const struct qmp_phy_cfg *cfg = qphy->cfg; void __iomem *serdes = qphy->serdes; - void __iomem *pcs = qphy->pcs; + struct qmp_phy *usb_phy = qmp->usb_phy; void __iomem *dp_com = qmp->dp_com; int ret, i;
@@ -4620,13 +4621,13 @@ static int qcom_qmp_phy_com_init(struct qmp_phy *qphy) qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], SW_PWRDN); } else { - if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL]) - qphy_setbits(pcs, - cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL], - cfg->pwrdn_ctrl); + if (usb_phy->cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL]) + qphy_setbits(usb_phy->pcs, + usb_phy->cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL], + usb_phy->cfg->pwrdn_ctrl); else - qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, - cfg->pwrdn_ctrl); + qphy_setbits(usb_phy->pcs, QPHY_POWER_DOWN_CONTROL, + usb_phy->cfg->pwrdn_ctrl); }
mutex_unlock(&qmp->phy_mutex); @@ -5794,6 +5795,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) goto err_node_put; }
+ if (cfg->type != PHY_TYPE_DP) + qmp->usb_phy = qmp->phys[id]; + /* * Register the pipe clock provided by phy. * See function description to see details of this pipe clock. @@ -5816,6 +5820,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) id++; }
+ if (!qmp->usb_phy) + return -EINVAL; + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) dev_info(dev, "Registered Qcom-QMP phy\n");
From: Johan Hovold johan+linaro@kernel.org
commit c7b98de745cffdceefc077ad5cf9cda032ef8959 upstream.
Drop the confused runtime-suspend type check which effectively broke runtime PM if the DP child node happens to be parsed before the USB child node during probe (e.g. due to order of child nodes in the devicetree).
Instead use the new driver data USB PHY pointer to access the USB configuration and resources.
Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy") Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Signed-off-by: Johan Hovold johan+linaro@kernel.org Link: https://lore.kernel.org/r/20221114081346.5116-6-johan+linaro@kernel.org Signed-off-by: Vinod Koul vkoul@kernel.org [swboyd@chromium.org: Backport to pre-split driver. Note that the condition is kept so that ufs and pcie don't do anything as before] Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/phy/qualcomm/phy-qcom-qmp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index b8646eaf1767..eef863108bfe 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -4985,7 +4985,7 @@ static void qcom_qmp_phy_disable_autonomous_mode(struct qmp_phy *qphy) static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev) { struct qcom_qmp *qmp = dev_get_drvdata(dev); - struct qmp_phy *qphy = qmp->phys[0]; + struct qmp_phy *qphy = qmp->usb_phy; const struct qmp_phy_cfg *cfg = qphy->cfg;
dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qphy->mode); @@ -5010,7 +5010,7 @@ static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev) static int __maybe_unused qcom_qmp_phy_runtime_resume(struct device *dev) { struct qcom_qmp *qmp = dev_get_drvdata(dev); - struct qmp_phy *qphy = qmp->phys[0]; + struct qmp_phy *qphy = qmp->usb_phy; const struct qmp_phy_cfg *cfg = qphy->cfg; int ret = 0;
On Fri, Feb 03, 2023 at 02:26:11PM -0800, Stephen Boyd wrote:
After the qmp phy driver was split it looks like 5.15.y stable kernels aren't getting fixes like commit 7a7d86d14d07 ("phy: qcom-qmp-combo: fix broken power on") which is tagged for stable 5.10. Trogdor boards use the qmp phy on 5.15.y kernels, so I backported the fixes I could find that looked like we may possibly trip over at some point.
USB and DP work on my Trogdor.Lazor board with this set.
Changes from v2 (https://lore.kernel.org/r/20230113204548.578798-1-swboyd@chromium.org):
- Keep conditional that can't be removed from last patch
- Rebase to latest 5.15.y stable tree
Changes from v1 (https://lore.kernel.org/r/20230113005405.3992011-1-swboyd@chromium.org):
- New patch for memleak on probe deferal to avoid compat issues
- Update "fix broken power on" patch for pcie/ufs phy
Johan Hovold (5): phy: qcom-qmp-combo: disable runtime PM on unbind phy: qcom-qmp-combo: fix memleak on probe deferral phy: qcom-qmp-usb: fix memleak on probe deferral phy: qcom-qmp-combo: fix broken power on phy: qcom-qmp-combo: fix runtime suspend
drivers/phy/qualcomm/phy-qcom-qmp.c | 89 ++++++++++++++++++++--------- 1 file changed, 61 insertions(+), 28 deletions(-)
Cc: Johan Hovold johan+linaro@kernel.org Cc: Dmitry Baryshkov dmitry.baryshkov@linaro.org Cc: Vinod Koul vkoul@kernel.org
base-commit: 9cf4111cdf9420fa99792ae16c8de23242bb2e0b
All now queued up, thanks.
greg k-h
linux-stable-mirror@lists.linaro.org
-
Greg KH -
Stephen Boyd