* [PATCH v4 0/5] Add EHCI and OHCI drivers for STi SoC's
@ 2014-08-07 15:21 ` Peter Griffin
0 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel
The series has been re-worked from v2 onwards to split out the ehci and ohci parts
into their own drivers / devices like most other ARM platforms based on
feedback from Arnd Bergmann (see here http://www.spinics.net/lists/linux-usb/msg111124.html.
The ehci-platform & ohci-platform have been used as a basis for this in case we
wish to merge the drivers again in the future.
Changes since v3:
- Make reset / power, clocks etc non optional dt options to simplify code
- Get rid of non DT boot code left over from *hci-platform drivers
- Remove DMA mask code
- Remove pre_setup func ptr and configure ahb2st bus convertor in ehci_platform_reset
- Unabstract and remove usb-st-common.c
- Have one kconfig which enables both ehci-st & ohci-st drivers
Changes since v2:
- Based on Arnd Berghman feedback, split out into 2 devices / drivers
- Base drivers oh ehci-platform.c & ohci-platform.c with required extensions
to allow possible re-merge in the furture.
Changes since v1:
- Correct s/OCHI/OHCI/ spelling
- Improve kconfig help message
- Various formating / spelling nits identified by Lee Jones
- Make driver depend on OF & remove node checks in code
- Use devm_ioremap_resource
- Remove unnecessary header files
Peter Griffin (5):
usb: host: ehci-st: Add EHCI support for ST STB devices
usb: host: ohci-st: Add OHCI driver support for ST STB devices
usb: host: ehci-st: Add ehci-st devicetree bindings documentation
usb: host: ohci-st: Add ohci-st devicetree bindings documentation
MAINTAINERS: Add ehci-st.c and ohci-st.c to ARCH/STI architecture
Documentation/devicetree/bindings/usb/ehci-st.txt | 39 +++
Documentation/devicetree/bindings/usb/ohci-st.txt | 37 +++
MAINTAINERS | 2 +
drivers/usb/host/Kconfig | 8 +
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-st.c | 363 ++++++++++++++++++++++
drivers/usb/host/ohci-st.c | 337 ++++++++++++++++++++
drivers/usb/host/usb-st-common.h | 31 ++
8 files changed, 818 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/ehci-st.txt
create mode 100644 Documentation/devicetree/bindings/usb/ohci-st.txt
create mode 100644 drivers/usb/host/ehci-st.c
create mode 100644 drivers/usb/host/ohci-st.c
create mode 100644 drivers/usb/host/usb-st-common.h
--
1.9.1
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v4 1/5] usb: host: ehci-st: Add EHCI support for ST STB devices
2014-08-07 15:21 ` Peter Griffin
@ 2014-08-07 15:21 ` Peter Griffin
-1 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel, arnd, stern, gregkh,
srinivas.kandagatla, maxime.coquelin, patrice.chotard
Cc: peter.griffin, lee.jones, linux-usb, devicetree
This patch adds the glue code required to ensure the on-chip EHCI
controller works on STi consumer electronics SoC's from STMicroelectronics.
It mainly manages the setting and enabling of the relevant clocks and manages
the reset / power signals to the IP block.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
drivers/usb/host/ehci-st.c | 363 +++++++++++++++++++++++++++++++++++++++
drivers/usb/host/usb-st-common.h | 31 ++++
2 files changed, 394 insertions(+)
create mode 100644 drivers/usb/host/ehci-st.c
create mode 100644 drivers/usb/host/usb-st-common.h
diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c
new file mode 100644
index 0000000..ac72ce3
--- /dev/null
+++ b/drivers/usb/host/ehci-st.c
@@ -0,0 +1,363 @@
+/*
+ * ST EHCI driver
+ *
+ * Copyright (C) 2014 STMicroelectronics – All Rights Reserved
+ *
+ * Author: Peter Griffin <peter.griffin@linaro.org>
+ *
+ * Derived from ehci-platform.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/hrtimer.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/ehci_pdriver.h>
+
+#include "ehci.h"
+#include "usb-st-common.h"
+
+#define DRIVER_DESC "EHCI STMicroelectronics driver"
+
+#define hcd_to_ehci_priv(h) ((struct st_platform_priv *)hcd_to_ehci(h)->priv)
+
+static const char hcd_name[] = "ehci-st";
+
+#define EHCI_CAPS_SIZE 0x10
+#define AHB2STBUS_INSREG01 (EHCI_CAPS_SIZE + 0x84)
+
+static int st_ehci_platform_reset(struct usb_hcd *hcd)
+{
+ struct platform_device *pdev = to_platform_device(hcd->self.controller);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(&pdev->dev);
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int retval;
+ u32 threshold;
+
+ /* Set EHCI packet buffer IN/OUT threshold to 128 bytes */
+ threshold = 128 | (128 << 16);
+ writel(threshold, hcd->regs + AHB2STBUS_INSREG01);
+
+ ehci->caps = hcd->regs + pdata->caps_offset;
+ retval = ehci_setup(hcd);
+ if (retval)
+ return retval;
+
+ return 0;
+}
+
+static int st_ehci_platform_power_on(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk, ret;
+
+ ret = reset_control_deassert(priv->pwr);
+ if (ret)
+ return ret;
+
+ ret = reset_control_deassert(priv->rst);
+ if (ret)
+ goto err_assert_power;
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that do
+ need the rate to be explicitly set */
+ if (priv->clk48) {
+ ret = clk_set_rate(priv->clk48, 48000000);
+ if (ret)
+ goto err_assert_reset;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++) {
+ ret = clk_prepare_enable(priv->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
+
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto err_disable_clks;
+
+ ret = phy_power_on(priv->phy);
+ if (ret)
+ goto err_exit_phy;
+
+ return 0;
+
+err_exit_phy:
+ phy_exit(priv->phy);
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(priv->clks[clk]);
+err_assert_reset:
+ reset_control_assert(priv->rst);
+err_assert_power:
+ reset_control_assert(priv->pwr);
+
+ return ret;
+}
+
+static void st_ehci_platform_power_off(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk;
+
+ reset_control_assert(priv->pwr);
+
+ reset_control_assert(priv->rst);
+
+ phy_power_off(priv->phy);
+
+ phy_exit(priv->phy);
+
+ for (clk = USB_MAX_CLKS - 1; clk >= 0; clk--)
+ if (priv->clks[clk])
+ clk_disable_unprepare(priv->clks[clk]);
+
+}
+
+static struct hc_driver __read_mostly ehci_platform_hc_driver;
+
+static const struct ehci_driver_overrides platform_overrides __initconst = {
+ .reset = st_ehci_platform_reset,
+ .extra_priv_size = sizeof(struct st_platform_priv),
+};
+
+static struct usb_ehci_pdata ehci_platform_defaults = {
+ .power_on = st_ehci_platform_power_on,
+ .power_suspend = st_ehci_platform_power_off,
+ .power_off = st_ehci_platform_power_off,
+};
+
+static int st_ehci_platform_probe(struct platform_device *dev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res_mem;
+ struct usb_ehci_pdata *pdata = &ehci_platform_defaults;
+ struct st_platform_priv *priv;
+ struct ehci_hcd *ehci;
+ int err, irq, clk = 0;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ dev_err(&dev->dev, "no irq provided");
+ return irq;
+ }
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!res_mem) {
+ dev_err(&dev->dev, "no memory resource provided");
+ return -ENXIO;
+ }
+
+ hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ platform_set_drvdata(dev, hcd);
+ dev->dev.platform_data = pdata;
+ priv = hcd_to_ehci_priv(hcd);
+ ehci = hcd_to_ehci(hcd);
+
+ priv->phy = devm_phy_get(&dev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+ goto err_put_hcd;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS; clk++) {
+ priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
+ if (IS_ERR(priv->clks[clk])) {
+ err = PTR_ERR(priv->clks[clk]);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->clks[clk] = NULL;
+ break;
+ }
+ }
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that
+ do need the rate to be explicitly set */
+ priv->clk48 = devm_clk_get(&dev->dev, "clk48");
+ if (IS_ERR(priv->clk48)) {
+ dev_info(&dev->dev, "48MHz clk not found\n");
+ priv->clk48 = NULL;
+ }
+
+ priv->pwr = devm_reset_control_get_optional(&dev->dev, "power");
+ if (IS_ERR(priv->pwr)) {
+ err = PTR_ERR(priv->pwr);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->pwr = NULL;
+ }
+
+ priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset");
+ if (IS_ERR(priv->rst)) {
+ err = PTR_ERR(priv->rst);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->rst = NULL;
+ }
+
+ if (pdata->power_on) {
+ err = pdata->power_on(dev);
+ if (err < 0)
+ goto err_put_clks;
+ }
+
+ hcd->rsrc_start = res_mem->start;
+ hcd->rsrc_len = resource_size(res_mem);
+
+ hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+ if (IS_ERR(hcd->regs)) {
+ err = PTR_ERR(hcd->regs);
+ goto err_put_clks;
+ }
+
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err)
+ goto err_put_clks;
+
+ device_wakeup_enable(hcd->self.controller);
+ platform_set_drvdata(dev, hcd);
+
+ return err;
+
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(priv->clks[clk]);
+err_put_hcd:
+ if (pdata == &ehci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ usb_put_hcd(hcd);
+
+ return err;
+}
+
+static int st_ehci_platform_remove(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct st_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk;
+
+ usb_remove_hcd(hcd);
+
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++)
+ clk_put(priv->clks[clk]);
+
+ usb_put_hcd(hcd);
+
+ if (pdata == &ehci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int st_ehci_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ bool do_wakeup = device_may_wakeup(dev);
+ int ret;
+
+ ret = ehci_suspend(hcd, do_wakeup);
+ if (ret)
+ return ret;
+
+ if (pdata->power_suspend)
+ pdata->power_suspend(pdev);
+
+ pinctrl_pm_select_sleep_state(dev);
+
+ return ret;
+}
+
+static int st_ehci_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ int err;
+
+ pinctrl_pm_select_default_state(dev);
+
+ if (pdata->power_on) {
+ err = pdata->power_on(pdev);
+ if (err < 0)
+ return err;
+ }
+
+ ehci_resume(hcd, false);
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+static SIMPLE_DEV_PM_OPS(st_ehci_pm_ops, st_ehci_suspend, st_ehci_resume);
+
+static const struct of_device_id st_ehci_ids[] = {
+ { .compatible = "st,st-ehci-300x", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, st_ehci_ids);
+
+static struct platform_driver ehci_platform_driver = {
+ .probe = st_ehci_platform_probe,
+ .remove = st_ehci_platform_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "st-ehci",
+ .pm = &st_ehci_pm_ops,
+ .of_match_table = st_ehci_ids,
+ }
+};
+
+static int __init ehci_platform_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ehci_init_driver(&ehci_platform_hc_driver, &platform_overrides);
+ return platform_driver_register(&ehci_platform_driver);
+}
+module_init(ehci_platform_init);
+
+static void __exit ehci_platform_cleanup(void)
+{
+ platform_driver_unregister(&ehci_platform_driver);
+}
+module_exit(ehci_platform_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Peter Griffin <peter.griffin@linaro.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/host/usb-st-common.h b/drivers/usb/host/usb-st-common.h
new file mode 100644
index 0000000..da67402
--- /dev/null
+++ b/drivers/usb/host/usb-st-common.h
@@ -0,0 +1,31 @@
+/*
+ * ST ehci / ohci common header file
+ *
+ * Copyright (C) 2014 STMicroelectronics – All Rights Reserved
+ *
+ * Author: Peter Griffin <peter.griffin@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __USB_ST_COMMON_H
+#define __USB_ST_COMMON_H
+
+#include <linux/clk.h>
+#include <linux/reset.h>
+#include <linux/phy/phy.h>
+
+#define USB_MAX_CLKS 3
+
+struct st_platform_priv {
+ struct clk *clks[USB_MAX_CLKS];
+ struct clk *clk48;
+ struct reset_control *rst;
+ struct reset_control *pwr;
+ struct phy *phy;
+};
+
+#endif /* __USB_ST_COMMON_H */
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 1/5] usb: host: ehci-st: Add EHCI support for ST STB devices
@ 2014-08-07 15:21 ` Peter Griffin
0 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel
This patch adds the glue code required to ensure the on-chip EHCI
controller works on STi consumer electronics SoC's from STMicroelectronics.
It mainly manages the setting and enabling of the relevant clocks and manages
the reset / power signals to the IP block.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
drivers/usb/host/ehci-st.c | 363 +++++++++++++++++++++++++++++++++++++++
drivers/usb/host/usb-st-common.h | 31 ++++
2 files changed, 394 insertions(+)
create mode 100644 drivers/usb/host/ehci-st.c
create mode 100644 drivers/usb/host/usb-st-common.h
diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c
new file mode 100644
index 0000000..ac72ce3
--- /dev/null
+++ b/drivers/usb/host/ehci-st.c
@@ -0,0 +1,363 @@
+/*
+ * ST EHCI driver
+ *
+ * Copyright (C) 2014 STMicroelectronics ? All Rights Reserved
+ *
+ * Author: Peter Griffin <peter.griffin@linaro.org>
+ *
+ * Derived from ehci-platform.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/hrtimer.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/ehci_pdriver.h>
+
+#include "ehci.h"
+#include "usb-st-common.h"
+
+#define DRIVER_DESC "EHCI STMicroelectronics driver"
+
+#define hcd_to_ehci_priv(h) ((struct st_platform_priv *)hcd_to_ehci(h)->priv)
+
+static const char hcd_name[] = "ehci-st";
+
+#define EHCI_CAPS_SIZE 0x10
+#define AHB2STBUS_INSREG01 (EHCI_CAPS_SIZE + 0x84)
+
+static int st_ehci_platform_reset(struct usb_hcd *hcd)
+{
+ struct platform_device *pdev = to_platform_device(hcd->self.controller);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(&pdev->dev);
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int retval;
+ u32 threshold;
+
+ /* Set EHCI packet buffer IN/OUT threshold to 128 bytes */
+ threshold = 128 | (128 << 16);
+ writel(threshold, hcd->regs + AHB2STBUS_INSREG01);
+
+ ehci->caps = hcd->regs + pdata->caps_offset;
+ retval = ehci_setup(hcd);
+ if (retval)
+ return retval;
+
+ return 0;
+}
+
+static int st_ehci_platform_power_on(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk, ret;
+
+ ret = reset_control_deassert(priv->pwr);
+ if (ret)
+ return ret;
+
+ ret = reset_control_deassert(priv->rst);
+ if (ret)
+ goto err_assert_power;
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that do
+ need the rate to be explicitly set */
+ if (priv->clk48) {
+ ret = clk_set_rate(priv->clk48, 48000000);
+ if (ret)
+ goto err_assert_reset;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++) {
+ ret = clk_prepare_enable(priv->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
+
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto err_disable_clks;
+
+ ret = phy_power_on(priv->phy);
+ if (ret)
+ goto err_exit_phy;
+
+ return 0;
+
+err_exit_phy:
+ phy_exit(priv->phy);
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(priv->clks[clk]);
+err_assert_reset:
+ reset_control_assert(priv->rst);
+err_assert_power:
+ reset_control_assert(priv->pwr);
+
+ return ret;
+}
+
+static void st_ehci_platform_power_off(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk;
+
+ reset_control_assert(priv->pwr);
+
+ reset_control_assert(priv->rst);
+
+ phy_power_off(priv->phy);
+
+ phy_exit(priv->phy);
+
+ for (clk = USB_MAX_CLKS - 1; clk >= 0; clk--)
+ if (priv->clks[clk])
+ clk_disable_unprepare(priv->clks[clk]);
+
+}
+
+static struct hc_driver __read_mostly ehci_platform_hc_driver;
+
+static const struct ehci_driver_overrides platform_overrides __initconst = {
+ .reset = st_ehci_platform_reset,
+ .extra_priv_size = sizeof(struct st_platform_priv),
+};
+
+static struct usb_ehci_pdata ehci_platform_defaults = {
+ .power_on = st_ehci_platform_power_on,
+ .power_suspend = st_ehci_platform_power_off,
+ .power_off = st_ehci_platform_power_off,
+};
+
+static int st_ehci_platform_probe(struct platform_device *dev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res_mem;
+ struct usb_ehci_pdata *pdata = &ehci_platform_defaults;
+ struct st_platform_priv *priv;
+ struct ehci_hcd *ehci;
+ int err, irq, clk = 0;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ dev_err(&dev->dev, "no irq provided");
+ return irq;
+ }
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!res_mem) {
+ dev_err(&dev->dev, "no memory resource provided");
+ return -ENXIO;
+ }
+
+ hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ platform_set_drvdata(dev, hcd);
+ dev->dev.platform_data = pdata;
+ priv = hcd_to_ehci_priv(hcd);
+ ehci = hcd_to_ehci(hcd);
+
+ priv->phy = devm_phy_get(&dev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+ goto err_put_hcd;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS; clk++) {
+ priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
+ if (IS_ERR(priv->clks[clk])) {
+ err = PTR_ERR(priv->clks[clk]);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->clks[clk] = NULL;
+ break;
+ }
+ }
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that
+ do need the rate to be explicitly set */
+ priv->clk48 = devm_clk_get(&dev->dev, "clk48");
+ if (IS_ERR(priv->clk48)) {
+ dev_info(&dev->dev, "48MHz clk not found\n");
+ priv->clk48 = NULL;
+ }
+
+ priv->pwr = devm_reset_control_get_optional(&dev->dev, "power");
+ if (IS_ERR(priv->pwr)) {
+ err = PTR_ERR(priv->pwr);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->pwr = NULL;
+ }
+
+ priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset");
+ if (IS_ERR(priv->rst)) {
+ err = PTR_ERR(priv->rst);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->rst = NULL;
+ }
+
+ if (pdata->power_on) {
+ err = pdata->power_on(dev);
+ if (err < 0)
+ goto err_put_clks;
+ }
+
+ hcd->rsrc_start = res_mem->start;
+ hcd->rsrc_len = resource_size(res_mem);
+
+ hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+ if (IS_ERR(hcd->regs)) {
+ err = PTR_ERR(hcd->regs);
+ goto err_put_clks;
+ }
+
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err)
+ goto err_put_clks;
+
+ device_wakeup_enable(hcd->self.controller);
+ platform_set_drvdata(dev, hcd);
+
+ return err;
+
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(priv->clks[clk]);
+err_put_hcd:
+ if (pdata == &ehci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ usb_put_hcd(hcd);
+
+ return err;
+}
+
+static int st_ehci_platform_remove(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct st_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk;
+
+ usb_remove_hcd(hcd);
+
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++)
+ clk_put(priv->clks[clk]);
+
+ usb_put_hcd(hcd);
+
+ if (pdata == &ehci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int st_ehci_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ bool do_wakeup = device_may_wakeup(dev);
+ int ret;
+
+ ret = ehci_suspend(hcd, do_wakeup);
+ if (ret)
+ return ret;
+
+ if (pdata->power_suspend)
+ pdata->power_suspend(pdev);
+
+ pinctrl_pm_select_sleep_state(dev);
+
+ return ret;
+}
+
+static int st_ehci_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ int err;
+
+ pinctrl_pm_select_default_state(dev);
+
+ if (pdata->power_on) {
+ err = pdata->power_on(pdev);
+ if (err < 0)
+ return err;
+ }
+
+ ehci_resume(hcd, false);
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+static SIMPLE_DEV_PM_OPS(st_ehci_pm_ops, st_ehci_suspend, st_ehci_resume);
+
+static const struct of_device_id st_ehci_ids[] = {
+ { .compatible = "st,st-ehci-300x", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, st_ehci_ids);
+
+static struct platform_driver ehci_platform_driver = {
+ .probe = st_ehci_platform_probe,
+ .remove = st_ehci_platform_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "st-ehci",
+ .pm = &st_ehci_pm_ops,
+ .of_match_table = st_ehci_ids,
+ }
+};
+
+static int __init ehci_platform_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ehci_init_driver(&ehci_platform_hc_driver, &platform_overrides);
+ return platform_driver_register(&ehci_platform_driver);
+}
+module_init(ehci_platform_init);
+
+static void __exit ehci_platform_cleanup(void)
+{
+ platform_driver_unregister(&ehci_platform_driver);
+}
+module_exit(ehci_platform_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Peter Griffin <peter.griffin@linaro.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/host/usb-st-common.h b/drivers/usb/host/usb-st-common.h
new file mode 100644
index 0000000..da67402
--- /dev/null
+++ b/drivers/usb/host/usb-st-common.h
@@ -0,0 +1,31 @@
+/*
+ * ST ehci / ohci common header file
+ *
+ * Copyright (C) 2014 STMicroelectronics ? All Rights Reserved
+ *
+ * Author: Peter Griffin <peter.griffin@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __USB_ST_COMMON_H
+#define __USB_ST_COMMON_H
+
+#include <linux/clk.h>
+#include <linux/reset.h>
+#include <linux/phy/phy.h>
+
+#define USB_MAX_CLKS 3
+
+struct st_platform_priv {
+ struct clk *clks[USB_MAX_CLKS];
+ struct clk *clk48;
+ struct reset_control *rst;
+ struct reset_control *pwr;
+ struct phy *phy;
+};
+
+#endif /* __USB_ST_COMMON_H */
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 2/5] usb: host: ohci-st: Add OHCI driver support for ST STB devices
2014-08-07 15:21 ` Peter Griffin
@ 2014-08-07 15:21 ` Peter Griffin
-1 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel, arnd, stern, gregkh,
srinivas.kandagatla, maxime.coquelin, patrice.chotard
Cc: peter.griffin, lee.jones, linux-usb, devicetree
This patch adds the glue code required to ensure the on-chip OHCI
controller works on STi consumer electronics SoC's from STMicroelectronics.
It mainly manages the setting and enabling of the relevant clocks and manages
the reset / power signals to the IP block.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
drivers/usb/host/Kconfig | 8 ++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ohci-st.c | 337 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 346 insertions(+)
create mode 100644 drivers/usb/host/ohci-st.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 03314f8..4b577f6 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -753,6 +753,14 @@ config USB_HCD_SSB
If unsure, say N.
+config USB_HCD_ST
+ tristate "ST USB driver for ST SoC Series"
+ depends on ARCH_STI && OF
+ select GENERIC_PHY
+ help
+ Enable support for the on-chip OHCI & EHCI controller found on
+ STMicroelectronics consumer electronics SoC's.
+
config USB_HCD_TEST_MODE
bool "HCD test mode support"
---help---
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index af89a90..df7e5ac 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -74,3 +74,4 @@ obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o
obj-$(CONFIG_USB_FOTG210_HCD) += fotg210-hcd.o
obj-$(CONFIG_USB_MAX3421_HCD) += max3421-hcd.o
+obj-$(CONFIG_USB_HCD_ST) += ehci-st.o ohci-st.o
diff --git a/drivers/usb/host/ohci-st.c b/drivers/usb/host/ohci-st.c
new file mode 100644
index 0000000..263132a
--- /dev/null
+++ b/drivers/usb/host/ohci-st.c
@@ -0,0 +1,337 @@
+/*
+ * ST OHCI driver
+ *
+ * Copyright (C) 2014 STMicroelectronics – All Rights Reserved
+ *
+ * Author: Peter Griffin <peter.griffin@linaro.org>
+ *
+ * Derived from ohci-platform.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/hrtimer.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/usb/ohci_pdriver.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ohci.h"
+#include "usb-st-common.h"
+
+#define DRIVER_DESC "OHCI STMicroelectronics driver"
+
+#define hcd_to_ohci_priv(h) ((struct st_platform_priv *)hcd_to_ohci(h)->priv)
+
+static const char hcd_name[] = "ohci-st";
+
+static int st_ohci_platform_power_on(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk, ret;
+
+ ret = reset_control_deassert(priv->pwr);
+ if (ret)
+ return ret;
+
+ ret = reset_control_deassert(priv->rst);
+ if (ret)
+ goto err_assert_power;
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that do
+ need the rate to be explicitly set */
+ if (priv->clk48) {
+ ret = clk_set_rate(priv->clk48, 48000000);
+ if (ret)
+ goto err_assert_reset;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++) {
+ ret = clk_prepare_enable(priv->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
+
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto err_disable_clks;
+
+ ret = phy_power_on(priv->phy);
+ if (ret)
+ goto err_exit_phy;
+
+ return 0;
+
+err_exit_phy:
+ phy_exit(priv->phy);
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(priv->clks[clk]);
+err_assert_reset:
+ reset_control_assert(priv->rst);
+err_assert_power:
+ reset_control_assert(priv->pwr);
+
+ return ret;
+}
+
+static void st_ohci_platform_power_off(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ohci_priv(hcd);
+
+ int clk;
+
+ reset_control_assert(priv->pwr);
+
+ reset_control_assert(priv->rst);
+
+ phy_power_off(priv->phy);
+
+ phy_exit(priv->phy);
+
+ for (clk = USB_MAX_CLKS - 1; clk >= 0; clk--)
+ if (priv->clks[clk])
+ clk_disable_unprepare(priv->clks[clk]);
+}
+
+static struct hc_driver __read_mostly ohci_platform_hc_driver;
+
+static const struct ohci_driver_overrides platform_overrides __initconst = {
+ .product_desc = "ST OHCI controller",
+ .extra_priv_size = sizeof(struct st_platform_priv),
+};
+
+static struct usb_ohci_pdata ohci_platform_defaults = {
+ .power_on = st_ohci_platform_power_on,
+ .power_suspend = st_ohci_platform_power_off,
+ .power_off = st_ohci_platform_power_off,
+};
+
+static int st_ohci_platform_probe(struct platform_device *dev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res_mem;
+ struct usb_ohci_pdata *pdata = &ohci_platform_defaults;
+ struct st_platform_priv *priv;
+ struct ohci_hcd *ohci;
+ int err, irq, clk = 0;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ dev_err(&dev->dev, "no irq provided");
+ return irq;
+ }
+
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!res_mem) {
+ dev_err(&dev->dev, "no memory resource provided");
+ return -ENXIO;
+ }
+
+ hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ platform_set_drvdata(dev, hcd);
+ dev->dev.platform_data = pdata;
+ priv = hcd_to_ohci_priv(hcd);
+ ohci = hcd_to_ohci(hcd);
+
+ priv->phy = devm_phy_get(&dev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+ goto err_put_hcd;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS; clk++) {
+ priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
+ if (IS_ERR(priv->clks[clk])) {
+ err = PTR_ERR(priv->clks[clk]);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->clks[clk] = NULL;
+ break;
+ }
+ }
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that
+ do need the rate to be explicitly set */
+ priv->clk48 = devm_clk_get(&dev->dev, "clk48");
+ if (IS_ERR(priv->clk48)) {
+ dev_info(&dev->dev, "48MHz clk not found\n");
+ priv->clk48 = NULL;
+ }
+
+ priv->pwr = devm_reset_control_get_optional(&dev->dev, "power");
+ if (IS_ERR(priv->pwr)) {
+ err = PTR_ERR(priv->pwr);
+ goto err_put_clks;
+ }
+
+ priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset");
+ if (IS_ERR(priv->rst)) {
+ err = PTR_ERR(priv->rst);
+ goto err_put_clks;
+ }
+
+ if (pdata->power_on) {
+ err = pdata->power_on(dev);
+ if (err < 0)
+ goto err_power;
+ }
+
+ hcd->rsrc_start = res_mem->start;
+ hcd->rsrc_len = resource_size(res_mem);
+
+ hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+ if (IS_ERR(hcd->regs)) {
+ err = PTR_ERR(hcd->regs);
+ goto err_power;
+ }
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err)
+ goto err_power;
+
+ device_wakeup_enable(hcd->self.controller);
+
+ platform_set_drvdata(dev, hcd);
+
+ return err;
+
+err_power:
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(priv->clks[clk]);
+err_put_hcd:
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ usb_put_hcd(hcd);
+
+ return err;
+}
+
+static int st_ohci_platform_remove(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct st_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk;
+
+ usb_remove_hcd(hcd);
+
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++)
+ clk_put(priv->clks[clk]);
+
+ usb_put_hcd(hcd);
+
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int st_ohci_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev->platform_data;
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ bool do_wakeup = device_may_wakeup(dev);
+ int ret;
+
+ ret = ohci_suspend(hcd, do_wakeup);
+ if (ret)
+ return ret;
+
+ if (pdata->power_suspend)
+ pdata->power_suspend(pdev);
+
+ return ret;
+}
+
+static int st_ohci_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ int err;
+
+ if (pdata->power_on) {
+ err = pdata->power_on(pdev);
+ if (err < 0)
+ return err;
+ }
+
+ ohci_resume(hcd, false);
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+static SIMPLE_DEV_PM_OPS(st_ohci_pm_ops, st_ohci_suspend, st_ohci_resume);
+
+static const struct of_device_id st_ohci_platform_ids[] = {
+ { .compatible = "st,st-ohci-300x", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, st_ohci_platform_ids);
+
+static struct platform_driver ohci_platform_driver = {
+ .probe = st_ohci_platform_probe,
+ .remove = st_ohci_platform_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "st-ohci",
+ .pm = &st_ohci_pm_ops,
+ .of_match_table = st_ohci_platform_ids,
+ }
+};
+
+static int __init ohci_platform_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
+ return platform_driver_register(&ohci_platform_driver);
+}
+module_init(ohci_platform_init);
+
+static void __exit ohci_platform_cleanup(void)
+{
+ platform_driver_unregister(&ohci_platform_driver);
+}
+module_exit(ohci_platform_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Peter Griffin <peter.griffin@linaro.org>");
+MODULE_LICENSE("GPL");
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 2/5] usb: host: ohci-st: Add OHCI driver support for ST STB devices
@ 2014-08-07 15:21 ` Peter Griffin
0 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel
This patch adds the glue code required to ensure the on-chip OHCI
controller works on STi consumer electronics SoC's from STMicroelectronics.
It mainly manages the setting and enabling of the relevant clocks and manages
the reset / power signals to the IP block.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
drivers/usb/host/Kconfig | 8 ++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ohci-st.c | 337 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 346 insertions(+)
create mode 100644 drivers/usb/host/ohci-st.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 03314f8..4b577f6 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -753,6 +753,14 @@ config USB_HCD_SSB
If unsure, say N.
+config USB_HCD_ST
+ tristate "ST USB driver for ST SoC Series"
+ depends on ARCH_STI && OF
+ select GENERIC_PHY
+ help
+ Enable support for the on-chip OHCI & EHCI controller found on
+ STMicroelectronics consumer electronics SoC's.
+
config USB_HCD_TEST_MODE
bool "HCD test mode support"
---help---
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index af89a90..df7e5ac 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -74,3 +74,4 @@ obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o
obj-$(CONFIG_USB_FOTG210_HCD) += fotg210-hcd.o
obj-$(CONFIG_USB_MAX3421_HCD) += max3421-hcd.o
+obj-$(CONFIG_USB_HCD_ST) += ehci-st.o ohci-st.o
diff --git a/drivers/usb/host/ohci-st.c b/drivers/usb/host/ohci-st.c
new file mode 100644
index 0000000..263132a
--- /dev/null
+++ b/drivers/usb/host/ohci-st.c
@@ -0,0 +1,337 @@
+/*
+ * ST OHCI driver
+ *
+ * Copyright (C) 2014 STMicroelectronics ? All Rights Reserved
+ *
+ * Author: Peter Griffin <peter.griffin@linaro.org>
+ *
+ * Derived from ohci-platform.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/hrtimer.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/usb/ohci_pdriver.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ohci.h"
+#include "usb-st-common.h"
+
+#define DRIVER_DESC "OHCI STMicroelectronics driver"
+
+#define hcd_to_ohci_priv(h) ((struct st_platform_priv *)hcd_to_ohci(h)->priv)
+
+static const char hcd_name[] = "ohci-st";
+
+static int st_ohci_platform_power_on(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk, ret;
+
+ ret = reset_control_deassert(priv->pwr);
+ if (ret)
+ return ret;
+
+ ret = reset_control_deassert(priv->rst);
+ if (ret)
+ goto err_assert_power;
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that do
+ need the rate to be explicitly set */
+ if (priv->clk48) {
+ ret = clk_set_rate(priv->clk48, 48000000);
+ if (ret)
+ goto err_assert_reset;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++) {
+ ret = clk_prepare_enable(priv->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
+
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto err_disable_clks;
+
+ ret = phy_power_on(priv->phy);
+ if (ret)
+ goto err_exit_phy;
+
+ return 0;
+
+err_exit_phy:
+ phy_exit(priv->phy);
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(priv->clks[clk]);
+err_assert_reset:
+ reset_control_assert(priv->rst);
+err_assert_power:
+ reset_control_assert(priv->pwr);
+
+ return ret;
+}
+
+static void st_ohci_platform_power_off(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct st_platform_priv *priv = hcd_to_ohci_priv(hcd);
+
+ int clk;
+
+ reset_control_assert(priv->pwr);
+
+ reset_control_assert(priv->rst);
+
+ phy_power_off(priv->phy);
+
+ phy_exit(priv->phy);
+
+ for (clk = USB_MAX_CLKS - 1; clk >= 0; clk--)
+ if (priv->clks[clk])
+ clk_disable_unprepare(priv->clks[clk]);
+}
+
+static struct hc_driver __read_mostly ohci_platform_hc_driver;
+
+static const struct ohci_driver_overrides platform_overrides __initconst = {
+ .product_desc = "ST OHCI controller",
+ .extra_priv_size = sizeof(struct st_platform_priv),
+};
+
+static struct usb_ohci_pdata ohci_platform_defaults = {
+ .power_on = st_ohci_platform_power_on,
+ .power_suspend = st_ohci_platform_power_off,
+ .power_off = st_ohci_platform_power_off,
+};
+
+static int st_ohci_platform_probe(struct platform_device *dev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res_mem;
+ struct usb_ohci_pdata *pdata = &ohci_platform_defaults;
+ struct st_platform_priv *priv;
+ struct ohci_hcd *ohci;
+ int err, irq, clk = 0;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ dev_err(&dev->dev, "no irq provided");
+ return irq;
+ }
+
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!res_mem) {
+ dev_err(&dev->dev, "no memory resource provided");
+ return -ENXIO;
+ }
+
+ hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ platform_set_drvdata(dev, hcd);
+ dev->dev.platform_data = pdata;
+ priv = hcd_to_ohci_priv(hcd);
+ ohci = hcd_to_ohci(hcd);
+
+ priv->phy = devm_phy_get(&dev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+ goto err_put_hcd;
+ }
+
+ for (clk = 0; clk < USB_MAX_CLKS; clk++) {
+ priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
+ if (IS_ERR(priv->clks[clk])) {
+ err = PTR_ERR(priv->clks[clk]);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->clks[clk] = NULL;
+ break;
+ }
+ }
+
+ /* some SoCs don't have a dedicated 48Mhz clock, but those that
+ do need the rate to be explicitly set */
+ priv->clk48 = devm_clk_get(&dev->dev, "clk48");
+ if (IS_ERR(priv->clk48)) {
+ dev_info(&dev->dev, "48MHz clk not found\n");
+ priv->clk48 = NULL;
+ }
+
+ priv->pwr = devm_reset_control_get_optional(&dev->dev, "power");
+ if (IS_ERR(priv->pwr)) {
+ err = PTR_ERR(priv->pwr);
+ goto err_put_clks;
+ }
+
+ priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset");
+ if (IS_ERR(priv->rst)) {
+ err = PTR_ERR(priv->rst);
+ goto err_put_clks;
+ }
+
+ if (pdata->power_on) {
+ err = pdata->power_on(dev);
+ if (err < 0)
+ goto err_power;
+ }
+
+ hcd->rsrc_start = res_mem->start;
+ hcd->rsrc_len = resource_size(res_mem);
+
+ hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+ if (IS_ERR(hcd->regs)) {
+ err = PTR_ERR(hcd->regs);
+ goto err_power;
+ }
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err)
+ goto err_power;
+
+ device_wakeup_enable(hcd->self.controller);
+
+ platform_set_drvdata(dev, hcd);
+
+ return err;
+
+err_power:
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(priv->clks[clk]);
+err_put_hcd:
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ usb_put_hcd(hcd);
+
+ return err;
+}
+
+static int st_ohci_platform_remove(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct st_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk;
+
+ usb_remove_hcd(hcd);
+
+ if (pdata->power_off)
+ pdata->power_off(dev);
+
+
+ for (clk = 0; clk < USB_MAX_CLKS && priv->clks[clk]; clk++)
+ clk_put(priv->clks[clk]);
+
+ usb_put_hcd(hcd);
+
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int st_ohci_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev->platform_data;
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ bool do_wakeup = device_may_wakeup(dev);
+ int ret;
+
+ ret = ohci_suspend(hcd, do_wakeup);
+ if (ret)
+ return ret;
+
+ if (pdata->power_suspend)
+ pdata->power_suspend(pdev);
+
+ return ret;
+}
+
+static int st_ohci_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
+ struct platform_device *pdev =
+ container_of(dev, struct platform_device, dev);
+ int err;
+
+ if (pdata->power_on) {
+ err = pdata->power_on(pdev);
+ if (err < 0)
+ return err;
+ }
+
+ ohci_resume(hcd, false);
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+static SIMPLE_DEV_PM_OPS(st_ohci_pm_ops, st_ohci_suspend, st_ohci_resume);
+
+static const struct of_device_id st_ohci_platform_ids[] = {
+ { .compatible = "st,st-ohci-300x", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, st_ohci_platform_ids);
+
+static struct platform_driver ohci_platform_driver = {
+ .probe = st_ohci_platform_probe,
+ .remove = st_ohci_platform_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "st-ohci",
+ .pm = &st_ohci_pm_ops,
+ .of_match_table = st_ohci_platform_ids,
+ }
+};
+
+static int __init ohci_platform_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
+ return platform_driver_register(&ohci_platform_driver);
+}
+module_init(ohci_platform_init);
+
+static void __exit ohci_platform_cleanup(void)
+{
+ platform_driver_unregister(&ohci_platform_driver);
+}
+module_exit(ohci_platform_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Peter Griffin <peter.griffin@linaro.org>");
+MODULE_LICENSE("GPL");
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 3/5] usb: host: ehci-st: Add ehci-st devicetree bindings documentation
2014-08-07 15:21 ` Peter Griffin
(?)
@ 2014-08-07 15:21 ` Peter Griffin
-1 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel, arnd, stern, gregkh,
srinivas.kandagatla, maxime.coquelin, patrice.chotard
Cc: peter.griffin, lee.jones, linux-usb, devicetree
This patch documents the device tree bindings required for the
ehci on-chip controller found in ST consumer electronics SoC's.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Documentation/devicetree/bindings/usb/ehci-st.txt | 39 +++++++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/ehci-st.txt
diff --git a/Documentation/devicetree/bindings/usb/ehci-st.txt b/Documentation/devicetree/bindings/usb/ehci-st.txt
new file mode 100644
index 0000000..fb45fa5
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ehci-st.txt
@@ -0,0 +1,39 @@
+ST USB EHCI controller
+
+Required properties:
+ - compatible : must be "st,st-ehci-300x"
+ - reg : physical base addresses of the controller and length of memory mapped
+ region
+ - interrupts : one EHCI interrupt should be described here
+ - pinctrl-names : a pinctrl state named "default" must be defined
+ - pinctrl-0 : phandle referencing pin configuration of the USB controller
+See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt
+ - clocks : phandle list of usb clocks
+ - clock-names : should be "ic" for interconnect clock and "clk48"
+See: Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+ - phys : phandle for the PHY device
+ - phy-names : should be "usb"
+ - resets : phandle + reset specifier pairs to the powerdown and softreset lines
+ of the USB IP
+ - reset-names : should be "power" and "softreset"
+See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
+See: Documentation/devicetree/bindings/reset/reset.txt
+
+Example:
+
+ ehci1: usb@0xfe203e00 {
+ compatible = "st,st-ehci-300x";
+ reg = <0xfe203e00 0x100>;
+ interrupts = <GIC_SPI 148 IRQ_TYPE_NONE>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb1>;
+ clocks = <&clk_s_a1_ls 0>;
+ phys = <&usb2_phy>;
+ phy-names = "usb";
+ status = "okay";
+
+ resets = <&powerdown STIH416_USB1_POWERDOWN>,
+ <&softreset STIH416_USB1_SOFTRESET>;
+ reset-names = "power", "softreset";
+ };
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 3/5] usb: host: ehci-st: Add ehci-st devicetree bindings documentation
@ 2014-08-07 15:21 ` Peter Griffin
0 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel
This patch documents the device tree bindings required for the
ehci on-chip controller found in ST consumer electronics SoC's.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Documentation/devicetree/bindings/usb/ehci-st.txt | 39 +++++++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/ehci-st.txt
diff --git a/Documentation/devicetree/bindings/usb/ehci-st.txt b/Documentation/devicetree/bindings/usb/ehci-st.txt
new file mode 100644
index 0000000..fb45fa5
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ehci-st.txt
@@ -0,0 +1,39 @@
+ST USB EHCI controller
+
+Required properties:
+ - compatible : must be "st,st-ehci-300x"
+ - reg : physical base addresses of the controller and length of memory mapped
+ region
+ - interrupts : one EHCI interrupt should be described here
+ - pinctrl-names : a pinctrl state named "default" must be defined
+ - pinctrl-0 : phandle referencing pin configuration of the USB controller
+See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt
+ - clocks : phandle list of usb clocks
+ - clock-names : should be "ic" for interconnect clock and "clk48"
+See: Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+ - phys : phandle for the PHY device
+ - phy-names : should be "usb"
+ - resets : phandle + reset specifier pairs to the powerdown and softreset lines
+ of the USB IP
+ - reset-names : should be "power" and "softreset"
+See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
+See: Documentation/devicetree/bindings/reset/reset.txt
+
+Example:
+
+ ehci1: usb at 0xfe203e00 {
+ compatible = "st,st-ehci-300x";
+ reg = <0xfe203e00 0x100>;
+ interrupts = <GIC_SPI 148 IRQ_TYPE_NONE>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb1>;
+ clocks = <&clk_s_a1_ls 0>;
+ phys = <&usb2_phy>;
+ phy-names = "usb";
+ status = "okay";
+
+ resets = <&powerdown STIH416_USB1_POWERDOWN>,
+ <&softreset STIH416_USB1_SOFTRESET>;
+ reset-names = "power", "softreset";
+ };
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 3/5] usb: host: ehci-st: Add ehci-st devicetree bindings documentation
@ 2014-08-07 15:21 ` Peter Griffin
0 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel, arnd, stern, gregkh,
srinivas.kandagatla, maxime.coquelin, patrice.chotard
Cc: peter.griffin, devicetree, linux-usb, lee.jones
This patch documents the device tree bindings required for the
ehci on-chip controller found in ST consumer electronics SoC's.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Documentation/devicetree/bindings/usb/ehci-st.txt | 39 +++++++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/ehci-st.txt
diff --git a/Documentation/devicetree/bindings/usb/ehci-st.txt b/Documentation/devicetree/bindings/usb/ehci-st.txt
new file mode 100644
index 0000000..fb45fa5
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ehci-st.txt
@@ -0,0 +1,39 @@
+ST USB EHCI controller
+
+Required properties:
+ - compatible : must be "st,st-ehci-300x"
+ - reg : physical base addresses of the controller and length of memory mapped
+ region
+ - interrupts : one EHCI interrupt should be described here
+ - pinctrl-names : a pinctrl state named "default" must be defined
+ - pinctrl-0 : phandle referencing pin configuration of the USB controller
+See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt
+ - clocks : phandle list of usb clocks
+ - clock-names : should be "ic" for interconnect clock and "clk48"
+See: Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+ - phys : phandle for the PHY device
+ - phy-names : should be "usb"
+ - resets : phandle + reset specifier pairs to the powerdown and softreset lines
+ of the USB IP
+ - reset-names : should be "power" and "softreset"
+See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
+See: Documentation/devicetree/bindings/reset/reset.txt
+
+Example:
+
+ ehci1: usb@0xfe203e00 {
+ compatible = "st,st-ehci-300x";
+ reg = <0xfe203e00 0x100>;
+ interrupts = <GIC_SPI 148 IRQ_TYPE_NONE>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb1>;
+ clocks = <&clk_s_a1_ls 0>;
+ phys = <&usb2_phy>;
+ phy-names = "usb";
+ status = "okay";
+
+ resets = <&powerdown STIH416_USB1_POWERDOWN>,
+ <&softreset STIH416_USB1_SOFTRESET>;
+ reset-names = "power", "softreset";
+ };
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 4/5] usb: host: ohci-st: Add ohci-st devicetree bindings documentation
2014-08-07 15:21 ` Peter Griffin
@ 2014-08-07 15:21 ` Peter Griffin
-1 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel, arnd, stern, gregkh,
srinivas.kandagatla, maxime.coquelin, patrice.chotard
Cc: peter.griffin, lee.jones, linux-usb, devicetree
This patch documents the device tree bindings required for
the ohci on-chip controller found in ST consumer electronics SoC's.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Documentation/devicetree/bindings/usb/ohci-st.txt | 37 +++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/ohci-st.txt
diff --git a/Documentation/devicetree/bindings/usb/ohci-st.txt b/Documentation/devicetree/bindings/usb/ohci-st.txt
new file mode 100644
index 0000000..6d83937
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ohci-st.txt
@@ -0,0 +1,37 @@
+ST USB OHCI controller
+
+Required properties:
+
+ - compatible : must be "st,st-ohci-300x"
+ - reg : physical base addresses of the controller and length of memory mapped
+ region
+ - interrupts : one OHCI controller interrupt should be described here
+ - clocks : phandle list of usb clocks
+ - clock-names : should be "ic" for interconnect clock and "clk48"
+See: Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+ - phys : phandle for the PHY device
+ - phy-names : should be "usb"
+
+ - resets : phandle to the powerdown and reset controller for the USB IP
+ - reset-names : should be "power" and "softreset".
+See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
+See: Documentation/devicetree/bindings/reset/reset.txt
+
+Example:
+
+ ohci0: usb@0xfe1ffc00 {
+ compatible = "st,st-ohci-300x";
+ reg = <0xfe1ffc00 0x100>;
+ interrupts = <GIC_SPI 149 IRQ_TYPE_NONE>;
+ clocks = <&clk_s_a1_ls 0>,
+ <&clockgen_b0 0>;
+ clock-names = "ic", "clk48";
+ phys = <&usb2_phy>;
+ phy-names = "usb";
+ status = "okay";
+
+ resets = <&powerdown STIH416_USB0_POWERDOWN>,
+ <&softreset STIH416_USB0_SOFTRESET>;
+ reset-names = "power", "softreset";
+ };
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 4/5] usb: host: ohci-st: Add ohci-st devicetree bindings documentation
@ 2014-08-07 15:21 ` Peter Griffin
0 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel
This patch documents the device tree bindings required for
the ohci on-chip controller found in ST consumer electronics SoC's.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Documentation/devicetree/bindings/usb/ohci-st.txt | 37 +++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/ohci-st.txt
diff --git a/Documentation/devicetree/bindings/usb/ohci-st.txt b/Documentation/devicetree/bindings/usb/ohci-st.txt
new file mode 100644
index 0000000..6d83937
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ohci-st.txt
@@ -0,0 +1,37 @@
+ST USB OHCI controller
+
+Required properties:
+
+ - compatible : must be "st,st-ohci-300x"
+ - reg : physical base addresses of the controller and length of memory mapped
+ region
+ - interrupts : one OHCI controller interrupt should be described here
+ - clocks : phandle list of usb clocks
+ - clock-names : should be "ic" for interconnect clock and "clk48"
+See: Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+ - phys : phandle for the PHY device
+ - phy-names : should be "usb"
+
+ - resets : phandle to the powerdown and reset controller for the USB IP
+ - reset-names : should be "power" and "softreset".
+See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt
+See: Documentation/devicetree/bindings/reset/reset.txt
+
+Example:
+
+ ohci0: usb at 0xfe1ffc00 {
+ compatible = "st,st-ohci-300x";
+ reg = <0xfe1ffc00 0x100>;
+ interrupts = <GIC_SPI 149 IRQ_TYPE_NONE>;
+ clocks = <&clk_s_a1_ls 0>,
+ <&clockgen_b0 0>;
+ clock-names = "ic", "clk48";
+ phys = <&usb2_phy>;
+ phy-names = "usb";
+ status = "okay";
+
+ resets = <&powerdown STIH416_USB0_POWERDOWN>,
+ <&softreset STIH416_USB0_SOFTRESET>;
+ reset-names = "power", "softreset";
+ };
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 5/5] MAINTAINERS: Add ehci-st.c and ohci-st.c to ARCH/STI architecture
2014-08-07 15:21 ` Peter Griffin
@ 2014-08-07 15:21 ` Peter Griffin
-1 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel, arnd, stern, gregkh,
srinivas.kandagatla, maxime.coquelin, patrice.chotard
Cc: peter.griffin, lee.jones, linux-usb, devicetree
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
MAINTAINERS | 2 ++
1 file changed, 2 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index c2066f4..89aef87 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1356,6 +1356,8 @@ F: drivers/pinctrl/pinctrl-st.c
F: drivers/media/rc/st_rc.c
F: drivers/i2c/busses/i2c-st.c
F: drivers/tty/serial/st-asc.c
+F: drivers/usb/host/ehci-st.c
+F: drivers/usb/host/ohci-st.c
ARM/TECHNOLOGIC SYSTEMS TS7250 MACHINE SUPPORT
M: Lennert Buytenhek <kernel@wantstofly.org>
--
1.9.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 5/5] MAINTAINERS: Add ehci-st.c and ohci-st.c to ARCH/STI architecture
@ 2014-08-07 15:21 ` Peter Griffin
0 siblings, 0 replies; 13+ messages in thread
From: Peter Griffin @ 2014-08-07 15:21 UTC (permalink / raw)
To: linux-arm-kernel
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
MAINTAINERS | 2 ++
1 file changed, 2 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index c2066f4..89aef87 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1356,6 +1356,8 @@ F: drivers/pinctrl/pinctrl-st.c
F: drivers/media/rc/st_rc.c
F: drivers/i2c/busses/i2c-st.c
F: drivers/tty/serial/st-asc.c
+F: drivers/usb/host/ehci-st.c
+F: drivers/usb/host/ohci-st.c
ARM/TECHNOLOGIC SYSTEMS TS7250 MACHINE SUPPORT
M: Lennert Buytenhek <kernel@wantstofly.org>
--
1.9.1
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