diff mbox series

[v5,1/3] phy: add driver for Qualcomm IPQ40xx USB PHY

Message ID 20200330164328.2944505-1-robert.marko@sartura.hr
State Superseded
Headers show
Series [v5,1/3] phy: add driver for Qualcomm IPQ40xx USB PHY | expand

Commit Message

Robert Marko March 30, 2020, 4:43 p.m. UTC 
From: John Crispin <john@phrozen.org>

Add a driver to setup the USB phy on Qualcom Dakota SoCs.
The driver sets up HS and SS phys.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>
---
Changes from v2 to v3:
* Remove magic writes as they are not needed
* Correct commit message

 drivers/phy/qualcomm/Kconfig                |   7 +
 drivers/phy/qualcomm/Makefile               |   1 +
 drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c | 152 ++++++++++++++++++++
 3 files changed, 160 insertions(+)
 create mode 100644 drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c

Comments

Rob Herring (Arm) March 31, 2020, 4:31 p.m. UTC | #1 
On Mon, 30 Mar 2020 18:43:29 +0200, Robert Marko wrote:
> This patch adds the binding documentation for the HS/SS USB PHY found
> inside Qualcom Dakota SoCs.
> 
> Signed-off-by: John Crispin <john@phrozen.org>
> Signed-off-by: Robert Marko <robert.marko@sartura.hr>
> Cc: Luka Perkov <luka.perkov@sartura.hr>
> ---
> Changes from v4 to v5:
> * Replace tabs with whitespaces
> * Add maintainer property
> 
>  .../bindings/phy/qcom-usb-ipq4019-phy.yaml    | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

Error: Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dts:21.25-26 syntax error
FATAL ERROR: Unable to parse input tree
scripts/Makefile.lib:311: recipe for target 'Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dt.yaml' failed
make[1]: *** [Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dt.yaml] Error 1
make[1]: *** Waiting for unfinished jobs....
Makefile:1262: recipe for target 'dt_binding_check' failed
make: *** [dt_binding_check] Error 2

See https://patchwork.ozlabs.org/patch/1264091

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.
Robert Marko March 31, 2020, 4:39 p.m. UTC | #2 
On Tue, Mar 31, 2020 at 6:31 PM Rob Herring <robh@kernel.org> wrote:
>
> On Mon, 30 Mar 2020 18:43:29 +0200, Robert Marko wrote:
> > This patch adds the binding documentation for the HS/SS USB PHY found
> > inside Qualcom Dakota SoCs.
> >
> > Signed-off-by: John Crispin <john@phrozen.org>
> > Signed-off-by: Robert Marko <robert.marko@sartura.hr>
> > Cc: Luka Perkov <luka.perkov@sartura.hr>
> > ---
> > Changes from v4 to v5:
> > * Replace tabs with whitespaces
> > * Add maintainer property
> >
> >  .../bindings/phy/qcom-usb-ipq4019-phy.yaml    | 48 +++++++++++++++++++
> >  1 file changed, 48 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.yaml
> >
>
> My bot found errors running 'make dt_binding_check' on your patch:
>
> Error: Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dts:21.25-26 syntax error
> FATAL ERROR: Unable to parse input tree
> scripts/Makefile.lib:311: recipe for target 'Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dt.yaml' failed
> make[1]: *** [Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dt.yaml] Error 1
> make[1]: *** Waiting for unfinished jobs....
> Makefile:1262: recipe for target 'dt_binding_check' failed
> make: *** [dt_binding_check] Error 2
>
> See https://patchwork.ozlabs.org/patch/1264091
>
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure dt-schema is up to date:
>
> pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade
>
> Please check and re-submit.
Hi Rob,
I tested locally before submitting and it will pass.
It appears that the bot will fail in your tree as a patch to add DT
nodes is part of the series and not yet upstream.

Best regards
Robert
Rob Herring (Arm) April 1, 2020, 3:45 p.m. UTC | #3 
On Tue, Mar 31, 2020 at 10:39 AM Robert Marko <robert.marko@sartura.hr> wrote:
>
> On Tue, Mar 31, 2020 at 6:31 PM Rob Herring <robh@kernel.org> wrote:
> >
> > On Mon, 30 Mar 2020 18:43:29 +0200, Robert Marko wrote:
> > > This patch adds the binding documentation for the HS/SS USB PHY found
> > > inside Qualcom Dakota SoCs.
> > >
> > > Signed-off-by: John Crispin <john@phrozen.org>
> > > Signed-off-by: Robert Marko <robert.marko@sartura.hr>
> > > Cc: Luka Perkov <luka.perkov@sartura.hr>
> > > ---
> > > Changes from v4 to v5:
> > > * Replace tabs with whitespaces
> > > * Add maintainer property
> > >
> > >  .../bindings/phy/qcom-usb-ipq4019-phy.yaml    | 48 +++++++++++++++++++
> > >  1 file changed, 48 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.yaml
> > >
> >
> > My bot found errors running 'make dt_binding_check' on your patch:
> >
> > Error: Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dts:21.25-26 syntax error
> > FATAL ERROR: Unable to parse input tree
> > scripts/Makefile.lib:311: recipe for target 'Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dt.yaml' failed
> > make[1]: *** [Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.example.dt.yaml] Error 1
> > make[1]: *** Waiting for unfinished jobs....
> > Makefile:1262: recipe for target 'dt_binding_check' failed
> > make: *** [dt_binding_check] Error 2
> >
> > See https://patchwork.ozlabs.org/patch/1264091
> >
> > If you already ran 'make dt_binding_check' and didn't see the above
> > error(s), then make sure dt-schema is up to date:
> >
> > pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade
> >
> > Please check and re-submit.
> Hi Rob,
> I tested locally before submitting and it will pass.

Impossible. Your example has defines, but there are no include files listed.

Rob
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig
index e46824da29f6..964bd5d784d2 100644
--- a/drivers/phy/qualcomm/Kconfig
+++ b/drivers/phy/qualcomm/Kconfig
@@ -18,6 +18,13 @@  config PHY_QCOM_APQ8064_SATA
 	depends on OF
 	select GENERIC_PHY
 
+config PHY_QCOM_IPQ4019_USB
+	tristate "Qualcomm IPQ4019 USB PHY module"
+	depends on OF && ARCH_QCOM
+	select GENERIC_PHY
+	help
+	  Support for the USB PHY on QCOM IPQ4019/Dakota chipsets.
+
 config PHY_QCOM_IPQ806X_SATA
 	tristate "Qualcomm IPQ806x SATA SerDes/PHY driver"
 	depends on ARCH_QCOM
diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile
index 283251d6a5d9..8afe6c4f5178 100644
--- a/drivers/phy/qualcomm/Makefile
+++ b/drivers/phy/qualcomm/Makefile
@@ -1,6 +1,7 @@ 
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_PHY_ATH79_USB)		+= phy-ath79-usb.o
 obj-$(CONFIG_PHY_QCOM_APQ8064_SATA)	+= phy-qcom-apq8064-sata.o
+obj-$(CONFIG_PHY_QCOM_IPQ4019_USB)	+= phy-qcom-ipq4019-usb.o
 obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA)	+= phy-qcom-ipq806x-sata.o
 obj-$(CONFIG_PHY_QCOM_PCIE2)		+= phy-qcom-pcie2.o
 obj-$(CONFIG_PHY_QCOM_QMP)		+= phy-qcom-qmp.o
diff --git a/drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c b/drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c
new file mode 100644
index 000000000000..7efebae6b6fd
--- /dev/null
+++ b/drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c
@@ -0,0 +1,152 @@ 
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2018 John Crispin <john@phrozen.org>
+ *
+ * Based on code from
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+struct ipq4019_usb_phy {
+	struct device		*dev;
+	struct phy		*phy;
+	void __iomem		*base;
+	struct reset_control	*por_rst;
+	struct reset_control	*srif_rst;
+};
+
+static int ipq4019_ss_phy_power_off(struct phy *_phy)
+{
+	struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
+
+	reset_control_assert(phy->por_rst);
+	msleep(10);
+
+	return 0;
+}
+
+static int ipq4019_ss_phy_power_on(struct phy *_phy)
+{
+	struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
+
+	ipq4019_ss_phy_power_off(_phy);
+
+	reset_control_deassert(phy->por_rst);
+
+	return 0;
+}
+
+static struct phy_ops ipq4019_usb_ss_phy_ops = {
+	.power_on	= ipq4019_ss_phy_power_on,
+	.power_off	= ipq4019_ss_phy_power_off,
+};
+
+static int ipq4019_hs_phy_power_off(struct phy *_phy)
+{
+	struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
+
+	reset_control_assert(phy->por_rst);
+	msleep(10);
+
+	reset_control_assert(phy->srif_rst);
+	msleep(10);
+
+	return 0;
+}
+
+static int ipq4019_hs_phy_power_on(struct phy *_phy)
+{
+	struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
+
+	ipq4019_hs_phy_power_off(_phy);
+
+	reset_control_deassert(phy->srif_rst);
+	msleep(10);
+
+	reset_control_deassert(phy->por_rst);
+
+	return 0;
+}
+
+static struct phy_ops ipq4019_usb_hs_phy_ops = {
+	.power_on	= ipq4019_hs_phy_power_on,
+	.power_off	= ipq4019_hs_phy_power_off,
+};
+
+static const struct of_device_id ipq4019_usb_phy_of_match[] = {
+	{ .compatible = "qcom,usb-hs-ipq4019-phy", .data = &ipq4019_usb_hs_phy_ops},
+	{ .compatible = "qcom,usb-ss-ipq4019-phy", .data = &ipq4019_usb_ss_phy_ops},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, ipq4019_usb_phy_of_match);
+
+static int ipq4019_usb_phy_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	struct phy_provider *phy_provider;
+	struct ipq4019_usb_phy *phy;
+	const struct of_device_id *match;
+
+	match = of_match_device(ipq4019_usb_phy_of_match, &pdev->dev);
+	if (!match)
+		return -ENODEV;
+
+	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
+	if (!phy)
+		return -ENOMEM;
+
+	phy->dev = &pdev->dev;
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	phy->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(phy->base)) {
+		dev_err(dev, "failed to remap register memory\n");
+		return PTR_ERR(phy->base);
+	}
+
+	phy->por_rst = devm_reset_control_get(phy->dev, "por_rst");
+	if (IS_ERR(phy->por_rst)) {
+		if (PTR_ERR(phy->por_rst) != -EPROBE_DEFER)
+			dev_err(dev, "POR reset is missing\n");
+		return PTR_ERR(phy->por_rst);
+	}
+
+	phy->srif_rst = devm_reset_control_get_optional(phy->dev, "srif_rst");
+	if (IS_ERR(phy->srif_rst))
+		return PTR_ERR(phy->srif_rst);
+
+	phy->phy = devm_phy_create(dev, NULL, match->data);
+	if (IS_ERR(phy->phy)) {
+		dev_err(dev, "failed to create PHY\n");
+		return PTR_ERR(phy->phy);
+	}
+	phy_set_drvdata(phy->phy, phy);
+
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+
+	return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static struct platform_driver ipq4019_usb_phy_driver = {
+	.probe	= ipq4019_usb_phy_probe,
+	.driver = {
+		.of_match_table	= ipq4019_usb_phy_of_match,
+		.name  = "ipq4019-usb-phy",
+	}
+};
+module_platform_driver(ipq4019_usb_phy_driver);
+
+MODULE_DESCRIPTION("QCOM/IPQ4019 USB phy driver");
+MODULE_AUTHOR("John Crispin <john@phrozen.org>");
+MODULE_LICENSE("GPL v2");