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path: root/drivers/usb/chipidea
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-rw-r--r--drivers/usb/chipidea/Kconfig7
-rw-r--r--drivers/usb/chipidea/Makefile2
-rw-r--r--drivers/usb/chipidea/bits.h10
-rw-r--r--drivers/usb/chipidea/ci.h8
-rw-r--r--drivers/usb/chipidea/ci_hdrc_imx.c110
-rw-r--r--drivers/usb/chipidea/ci_hdrc_imx.h17
-rw-r--r--drivers/usb/chipidea/ci_hdrc_msm.c1
-rw-r--r--drivers/usb/chipidea/core.c197
-rw-r--r--drivers/usb/chipidea/host.c31
-rw-r--r--drivers/usb/chipidea/host.h6
-rw-r--r--drivers/usb/chipidea/otg.c120
-rw-r--r--drivers/usb/chipidea/otg.h35
-rw-r--r--drivers/usb/chipidea/udc.c78
-rw-r--r--drivers/usb/chipidea/udc.h6
-rw-r--r--drivers/usb/chipidea/usbmisc_imx.c95
15 files changed, 480 insertions, 243 deletions
diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
index d1bd8ef1f9c1..4a851e15e58c 100644
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@@ -1,6 +1,6 @@
config USB_CHIPIDEA
tristate "ChipIdea Highspeed Dual Role Controller"
- depends on USB || USB_GADGET
+ depends on (USB_EHCI_HCD && USB_GADGET) || (USB_EHCI_HCD && !USB_GADGET) || (!USB_EHCI_HCD && USB_GADGET)
help
Say Y here if your system has a dual role high speed USB
controller based on ChipIdea silicon IP. Currently, only the
@@ -12,15 +12,14 @@ if USB_CHIPIDEA
config USB_CHIPIDEA_UDC
bool "ChipIdea device controller"
- depends on USB_GADGET=y || (USB_CHIPIDEA=m && USB_GADGET=m)
+ depends on USB_GADGET
help
Say Y here to enable device controller functionality of the
ChipIdea driver.
config USB_CHIPIDEA_HOST
bool "ChipIdea host controller"
- depends on USB=y
- depends on USB_EHCI_HCD=y || (USB_CHIPIDEA=m && USB_EHCI_HCD=m)
+ depends on USB_EHCI_HCD
select USB_EHCI_ROOT_HUB_TT
help
Say Y here to enable host controller functionality of the
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index 6cf5f68dedd8..a99d980454a6 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -2,7 +2,7 @@ ccflags-$(CONFIG_USB_CHIPIDEA_DEBUG) := -DDEBUG
obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc.o
-ci_hdrc-y := core.o
+ci_hdrc-y := core.o otg.o
ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC) += udc.o
ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST) += host.o
ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG) += debug.o
diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h
index 1b23e354f9fb..464584c6ccae 100644
--- a/drivers/usb/chipidea/bits.h
+++ b/drivers/usb/chipidea/bits.h
@@ -79,11 +79,21 @@
#define OTGSC_ASVIS BIT(18)
#define OTGSC_BSVIS BIT(19)
#define OTGSC_BSEIS BIT(20)
+#define OTGSC_1MSIS BIT(21)
+#define OTGSC_DPIS BIT(22)
#define OTGSC_IDIE BIT(24)
#define OTGSC_AVVIE BIT(25)
#define OTGSC_ASVIE BIT(26)
#define OTGSC_BSVIE BIT(27)
#define OTGSC_BSEIE BIT(28)
+#define OTGSC_1MSIE BIT(29)
+#define OTGSC_DPIE BIT(30)
+#define OTGSC_INT_EN_BITS (OTGSC_IDIE | OTGSC_AVVIE | OTGSC_ASVIE \
+ | OTGSC_BSVIE | OTGSC_BSEIE | OTGSC_1MSIE \
+ | OTGSC_DPIE)
+#define OTGSC_INT_STATUS_BITS (OTGSC_IDIS | OTGSC_AVVIS | OTGSC_ASVIS \
+ | OTGSC_BSVIS | OTGSC_BSEIS | OTGSC_1MSIS \
+ | OTGSC_DPIS)
/* USBMODE */
#define USBMODE_CM (0x03UL << 0)
diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 33cb29f36e06..1c94fc5257f4 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -132,6 +132,9 @@ struct hw_bank {
* @transceiver: pointer to USB PHY, if any
* @hcd: pointer to usb_hcd for ehci host driver
* @debugfs: root dentry for this controller in debugfs
+ * @id_event: indicates there is an id event, and handled at ci_otg_work
+ * @b_sess_valid_event: indicates there is a vbus event, and handled
+ * at ci_otg_work
*/
struct ci_hdrc {
struct device *dev;
@@ -168,6 +171,8 @@ struct ci_hdrc {
struct usb_phy *transceiver;
struct usb_hcd *hcd;
struct dentry *debugfs;
+ bool id_event;
+ bool b_sess_valid_event;
};
static inline struct ci_role_driver *ci_role(struct ci_hdrc *ci)
@@ -303,4 +308,7 @@ int hw_port_test_set(struct ci_hdrc *ci, u8 mode);
u8 hw_port_test_get(struct ci_hdrc *ci);
+int hw_wait_reg(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask,
+ u32 value, unsigned int timeout_ms);
+
#endif /* __DRIVERS_USB_CHIPIDEA_CI_H */
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 14362c00db3f..74d998d9b45b 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -19,70 +19,56 @@
#include <linux/dma-mapping.h>
#include <linux/usb/chipidea.h>
#include <linux/clk.h>
-#include <linux/regulator/consumer.h>
#include "ci.h"
#include "ci_hdrc_imx.h"
-#define pdev_to_phy(pdev) \
- ((struct usb_phy *)platform_get_drvdata(pdev))
-
struct ci_hdrc_imx_data {
struct usb_phy *phy;
struct platform_device *ci_pdev;
struct clk *clk;
- struct regulator *reg_vbus;
+ struct imx_usbmisc_data *usbmisc_data;
};
-static const struct usbmisc_ops *usbmisc_ops;
-
/* Common functions shared by usbmisc drivers */
-int usbmisc_set_ops(const struct usbmisc_ops *ops)
-{
- if (usbmisc_ops)
- return -EBUSY;
-
- usbmisc_ops = ops;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(usbmisc_set_ops);
-
-void usbmisc_unset_ops(const struct usbmisc_ops *ops)
-{
- usbmisc_ops = NULL;
-}
-EXPORT_SYMBOL_GPL(usbmisc_unset_ops);
-
-int usbmisc_get_init_data(struct device *dev, struct usbmisc_usb_device *usbdev)
+static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
{
struct device_node *np = dev->of_node;
struct of_phandle_args args;
+ struct imx_usbmisc_data *data;
int ret;
- usbdev->dev = dev;
+ /*
+ * In case the fsl,usbmisc property is not present this device doesn't
+ * need usbmisc. Return NULL (which is no error here)
+ */
+ if (!of_get_property(np, "fsl,usbmisc", NULL))
+ return NULL;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return ERR_PTR(-ENOMEM);
ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells",
0, &args);
if (ret) {
dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n",
ret);
- memset(usbdev, 0, sizeof(*usbdev));
- return ret;
+ return ERR_PTR(ret);
}
- usbdev->index = args.args[0];
+
+ data->index = args.args[0];
of_node_put(args.np);
if (of_find_property(np, "disable-over-current", NULL))
- usbdev->disable_oc = 1;
+ data->disable_oc = 1;
if (of_find_property(np, "external-vbus-divider", NULL))
- usbdev->evdo = 1;
+ data->evdo = 1;
- return 0;
+ return data;
}
-EXPORT_SYMBOL_GPL(usbmisc_get_init_data);
/* End of common functions shared by usbmisc drivers*/
@@ -93,27 +79,19 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
.name = "ci_hdrc_imx",
.capoffset = DEF_CAPOFFSET,
.flags = CI_HDRC_REQUIRE_TRANSCEIVER |
- CI_HDRC_PULLUP_ON_VBUS |
CI_HDRC_DISABLE_STREAMING,
};
- struct resource *res;
int ret;
- if (of_find_property(pdev->dev.of_node, "fsl,usbmisc", NULL)
- && !usbmisc_ops)
- return -EPROBE_DEFER;
-
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
dev_err(&pdev->dev, "Failed to allocate ci_hdrc-imx data!\n");
return -ENOMEM;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Can't get device resources!\n");
- return -ENOENT;
- }
+ data->usbmisc_data = usbmisc_get_init_data(&pdev->dev);
+ if (IS_ERR(data->usbmisc_data))
+ return PTR_ERR(data->usbmisc_data);
data->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(data->clk)) {
@@ -141,20 +119,6 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
goto err_clk;
}
- /* we only support host now, so enable vbus here */
- data->reg_vbus = devm_regulator_get(&pdev->dev, "vbus");
- if (!IS_ERR(data->reg_vbus)) {
- ret = regulator_enable(data->reg_vbus);
- if (ret) {
- dev_err(&pdev->dev,
- "Failed to enable vbus regulator, err=%d\n",
- ret);
- goto err_clk;
- }
- } else {
- data->reg_vbus = NULL;
- }
-
pdata.phy = data->phy;
if (!pdev->dev.dma_mask)
@@ -162,12 +126,12 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
if (!pdev->dev.coherent_dma_mask)
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
- if (usbmisc_ops && usbmisc_ops->init) {
- ret = usbmisc_ops->init(&pdev->dev);
+ if (data->usbmisc_data) {
+ ret = imx_usbmisc_init(data->usbmisc_data);
if (ret) {
- dev_err(&pdev->dev,
- "usbmisc init failed, ret=%d\n", ret);
- goto err;
+ dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n",
+ ret);
+ goto err_clk;
}
}
@@ -179,14 +143,14 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
dev_err(&pdev->dev,
"Can't register ci_hdrc platform device, err=%d\n",
ret);
- goto err;
+ goto err_clk;
}
- if (usbmisc_ops && usbmisc_ops->post) {
- ret = usbmisc_ops->post(&pdev->dev);
+ if (data->usbmisc_data) {
+ ret = imx_usbmisc_init_post(data->usbmisc_data);
if (ret) {
- dev_err(&pdev->dev,
- "usbmisc post failed, ret=%d\n", ret);
+ dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n",
+ ret);
goto disable_device;
}
}
@@ -200,9 +164,6 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
disable_device:
ci_hdrc_remove_device(data->ci_pdev);
-err:
- if (data->reg_vbus)
- regulator_disable(data->reg_vbus);
err_clk:
clk_disable_unprepare(data->clk);
return ret;
@@ -215,13 +176,8 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
ci_hdrc_remove_device(data->ci_pdev);
- if (data->reg_vbus)
- regulator_disable(data->reg_vbus);
-
- if (data->phy) {
+ if (data->phy)
usb_phy_shutdown(data->phy);
- module_put(data->phy->dev->driver->owner);
- }
clk_disable_unprepare(data->clk);
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h
index 550bfa457620..c7271590dd0a 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.h
+++ b/drivers/usb/chipidea/ci_hdrc_imx.h
@@ -9,23 +9,12 @@
* http://www.gnu.org/copyleft/gpl.html
*/
-/* Used to set SoC specific callbacks */
-struct usbmisc_ops {
- /* It's called once when probe a usb device */
- int (*init)(struct device *dev);
- /* It's called once after adding a usb device */
- int (*post)(struct device *dev);
-};
-
-struct usbmisc_usb_device {
- struct device *dev; /* usb controller device */
+struct imx_usbmisc_data {
int index;
unsigned int disable_oc:1; /* over current detect disabled */
unsigned int evdo:1; /* set external vbus divider option */
};
-int usbmisc_set_ops(const struct usbmisc_ops *ops);
-void usbmisc_unset_ops(const struct usbmisc_ops *ops);
-int
-usbmisc_get_init_data(struct device *dev, struct usbmisc_usb_device *usbdev);
+int imx_usbmisc_init(struct imx_usbmisc_data *);
+int imx_usbmisc_init_post(struct imx_usbmisc_data *);
diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c
index fb657ef50a9c..2d51d852b474 100644
--- a/drivers/usb/chipidea/ci_hdrc_msm.c
+++ b/drivers/usb/chipidea/ci_hdrc_msm.c
@@ -49,7 +49,6 @@ static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
.name = "ci_hdrc_msm",
.flags = CI_HDRC_REGS_SHARED |
CI_HDRC_REQUIRE_TRANSCEIVER |
- CI_HDRC_PULLUP_ON_VBUS |
CI_HDRC_DISABLE_STREAMING,
.notify_event = ci_hdrc_msm_notify_event,
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index a5df24c578fc..94626409559a 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -65,12 +65,14 @@
#include <linux/usb/chipidea.h>
#include <linux/usb/of.h>
#include <linux/phy.h>
+#include <linux/regulator/consumer.h>
#include "ci.h"
#include "udc.h"
#include "bits.h"
#include "host.h"
#include "debug.h"
+#include "otg.h"
/* Controller register map */
static uintptr_t ci_regs_nolpm[] = {
@@ -197,6 +199,12 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem *base)
if (ci->hw_ep_max > ENDPT_MAX)
return -ENODEV;
+ /* Disable all interrupts bits */
+ hw_write(ci, OP_USBINTR, 0xffffffff, 0);
+
+ /* Clear all interrupts status bits*/
+ hw_write(ci, OP_USBSTS, 0xffffffff, 0xffffffff);
+
dev_dbg(ci->dev, "ChipIdea HDRC found, lpm: %d; cap: %p op: %p\n",
ci->hw_bank.lpm, ci->hw_bank.cap, ci->hw_bank.op);
@@ -264,8 +272,6 @@ int hw_device_reset(struct ci_hdrc *ci, u32 mode)
while (hw_read(ci, OP_USBCMD, USBCMD_RST))
udelay(10); /* not RTOS friendly */
- hw_phymode_configure(ci);
-
if (ci->platdata->notify_event)
ci->platdata->notify_event(ci,
CI_HDRC_CONTROLLER_RESET_EVENT);
@@ -289,37 +295,35 @@ int hw_device_reset(struct ci_hdrc *ci, u32 mode)
}
/**
- * ci_otg_role - pick role based on ID pin state
+ * hw_wait_reg: wait the register value
+ *
+ * Sometimes, it needs to wait register value before going on.
+ * Eg, when switch to device mode, the vbus value should be lower
+ * than OTGSC_BSV before connects to host.
+ *
* @ci: the controller
+ * @reg: register index
+ * @mask: mast bit
+ * @value: the bit value to wait
+ * @timeout_ms: timeout in millisecond
+ *
+ * This function returns an error code if timeout
*/
-static enum ci_role ci_otg_role(struct ci_hdrc *ci)
-{
- u32 sts = hw_read(ci, OP_OTGSC, ~0);
- enum ci_role role = sts & OTGSC_ID
- ? CI_ROLE_GADGET
- : CI_ROLE_HOST;
-
- return role;
-}
-
-/**
- * ci_role_work - perform role changing based on ID pin
- * @work: work struct
- */
-static void ci_role_work(struct work_struct *work)
+int hw_wait_reg(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask,
+ u32 value, unsigned int timeout_ms)
{
- struct ci_hdrc *ci = container_of(work, struct ci_hdrc, work);
- enum ci_role role = ci_otg_role(ci);
-
- if (role != ci->role) {
- dev_dbg(ci->dev, "switching from %s to %s\n",
- ci_role(ci)->name, ci->roles[role]->name);
-
- ci_role_stop(ci);
- ci_role_start(ci, role);
+ unsigned long elapse = jiffies + msecs_to_jiffies(timeout_ms);
+
+ while (hw_read(ci, reg, mask) != value) {
+ if (time_after(jiffies, elapse)) {
+ dev_err(ci->dev, "timeout waiting for %08x in %d\n",
+ mask, reg);
+ return -ETIMEDOUT;
+ }
+ msleep(20);
}
- enable_irq(ci->irq);
+ return 0;
}
static irqreturn_t ci_irq(int irq, void *data)
@@ -331,19 +335,55 @@ static irqreturn_t ci_irq(int irq, void *data)
if (ci->is_otg)
otgsc = hw_read(ci, OP_OTGSC, ~0);
- if (ci->role != CI_ROLE_END)
- ret = ci_role(ci)->irq(ci);
+ /*
+ * Handle id change interrupt, it indicates device/host function
+ * switch.
+ */
+ if (ci->is_otg && (otgsc & OTGSC_IDIE) && (otgsc & OTGSC_IDIS)) {
+ ci->id_event = true;
+ ci_clear_otg_interrupt(ci, OTGSC_IDIS);
+ disable_irq_nosync(ci->irq);
+ queue_work(ci->wq, &ci->work);
+ return IRQ_HANDLED;
+ }
- if (ci->is_otg && (otgsc & OTGSC_IDIS)) {
- hw_write(ci, OP_OTGSC, OTGSC_IDIS, OTGSC_IDIS);
+ /*
+ * Handle vbus change interrupt, it indicates device connection
+ * and disconnection events.
+ */
+ if (ci->is_otg && (otgsc & OTGSC_BSVIE) && (otgsc & OTGSC_BSVIS)) {
+ ci->b_sess_valid_event = true;
+ ci_clear_otg_interrupt(ci, OTGSC_BSVIS);
disable_irq_nosync(ci->irq);
queue_work(ci->wq, &ci->work);
- ret = IRQ_HANDLED;
+ return IRQ_HANDLED;
}
+ /* Handle device/host interrupt */
+ if (ci->role != CI_ROLE_END)
+ ret = ci_role(ci)->irq(ci);
+
return ret;
}
+static int ci_get_platdata(struct device *dev,
+ struct ci_hdrc_platform_data *platdata)
+{
+ /* Get the vbus regulator */
+ platdata->reg_vbus = devm_regulator_get(dev, "vbus");
+ if (PTR_ERR(platdata->reg_vbus) == -EPROBE_DEFER) {
+ return -EPROBE_DEFER;
+ } else if (PTR_ERR(platdata->reg_vbus) == -ENODEV) {
+ platdata->reg_vbus = NULL; /* no vbus regualator is needed */
+ } else if (IS_ERR(platdata->reg_vbus)) {
+ dev_err(dev, "Getting regulator error: %ld\n",
+ PTR_ERR(platdata->reg_vbus));
+ return PTR_ERR(platdata->reg_vbus);
+ }
+
+ return 0;
+}
+
static DEFINE_IDA(ci_ida);
struct platform_device *ci_hdrc_add_device(struct device *dev,
@@ -353,6 +393,10 @@ struct platform_device *ci_hdrc_add_device(struct device *dev,
struct platform_device *pdev;
int id, ret;
+ ret = ci_get_platdata(dev, platdata);
+ if (ret)
+ return ERR_PTR(ret);
+
id = ida_simple_get(&ci_ida, 0, 0, GFP_KERNEL);
if (id < 0)
return ERR_PTR(id);
@@ -398,6 +442,29 @@ void ci_hdrc_remove_device(struct platform_device *pdev)
}
EXPORT_SYMBOL_GPL(ci_hdrc_remove_device);
+static inline void ci_role_destroy(struct ci_hdrc *ci)
+{
+ ci_hdrc_gadget_destroy(ci);
+ ci_hdrc_host_destroy(ci);
+ if (ci->is_otg)
+ ci_hdrc_otg_destroy(ci);
+}
+
+static void ci_get_otg_capable(struct ci_hdrc *ci)
+{
+ if (ci->platdata->flags & CI_HDRC_DUAL_ROLE_NOT_OTG)
+ ci->is_otg = false;
+ else
+ ci->is_otg = (hw_read(ci, CAP_DCCPARAMS,
+ DCCPARAMS_DC | DCCPARAMS_HC)
+ == (DCCPARAMS_DC | DCCPARAMS_HC));
+ if (ci->is_otg) {
+ dev_dbg(ci->dev, "It is OTG capable controller\n");
+ ci_disable_otg_interrupt(ci, OTGSC_INT_EN_BITS);
+ ci_clear_otg_interrupt(ci, OTGSC_INT_STATUS_BITS);
+ }
+}
+
static int ci_hdrc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -406,15 +473,13 @@ static int ci_hdrc_probe(struct platform_device *pdev)
void __iomem *base;
int ret;
enum usb_dr_mode dr_mode;
+ struct device_node *of_node = dev->of_node ?: dev->parent->of_node;
if (!dev->platform_data) {
dev_err(dev, "platform data missing\n");
return -ENODEV;
}
- if (!dev->of_node && dev->parent)
- dev->of_node = dev->parent->of_node;
-
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
@@ -447,18 +512,15 @@ static int ci_hdrc_probe(struct platform_device *pdev)
return -ENODEV;
}
- INIT_WORK(&ci->work, ci_role_work);
- ci->wq = create_singlethread_workqueue("ci_otg");
- if (!ci->wq) {
- dev_err(dev, "can't create workqueue\n");
- return -ENODEV;
- }
+ ci_get_otg_capable(ci);
if (!ci->platdata->phy_mode)
- ci->platdata->phy_mode = of_usb_get_phy_mode(dev->of_node);
+ ci->platdata->phy_mode = of_usb_get_phy_mode(of_node);
+
+ hw_phymode_configure(ci);
if (!ci->platdata->dr_mode)
- ci->platdata->dr_mode = of_usb_get_dr_mode(dev->of_node);
+ ci->platdata->dr_mode = of_usb_get_dr_mode(of_node);
if (ci->platdata->dr_mode == USB_DR_MODE_UNKNOWN)
ci->platdata->dr_mode = USB_DR_MODE_OTG;
@@ -479,15 +541,34 @@ static int ci_hdrc_probe(struct platform_device *pdev)
if (!ci->roles[CI_ROLE_HOST] && !ci->roles[CI_ROLE_GADGET]) {
dev_err(dev, "no supported roles\n");
- ret = -ENODEV;
- goto rm_wq;
+ return -ENODEV;
+ }
+
+ if (ci->is_otg) {
+ ret = ci_hdrc_otg_init(ci);
+ if (ret) {
+ dev_err(dev, "init otg fails, ret = %d\n", ret);
+ goto stop;
+ }
}
if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) {
- ci->is_otg = true;
- /* ID pin needs 1ms debouce time, we delay 2ms for safe */
- mdelay(2);
- ci->role = ci_otg_role(ci);
+ if (ci->is_otg) {
+ /*
+ * ID pin needs 1ms debouce time,
+ * we delay 2ms for safe.
+ */
+ mdelay(2);
+ ci->role = ci_otg_role(ci);
+ ci_enable_otg_interrupt(ci, OTGSC_IDIE);
+ } else {
+ /*
+ * If the controller is not OTG capable, but support
+ * role switch, the defalt role is gadget, and the
+ * user can switch it through debugfs.
+ */
+ ci->role = CI_ROLE_GADGET;
+ }
} else {
ci->role = ci->roles[CI_ROLE_HOST]
? CI_ROLE_HOST
@@ -497,8 +578,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
ret = ci_role_start(ci, ci->role);
if (ret) {
dev_err(dev, "can't start %s role\n", ci_role(ci)->name);
- ret = -ENODEV;
- goto rm_wq;
+ goto stop;
}
platform_set_drvdata(pdev, ci);
@@ -507,19 +587,13 @@ static int ci_hdrc_probe(struct platform_device *pdev)
if (ret)
goto stop;
- if (ci->is_otg)
- hw_write(ci, OP_OTGSC, OTGSC_IDIE, OTGSC_IDIE);
-
ret = dbg_create_files(ci);
if (!ret)
return 0;
free_irq(ci->irq, ci);
stop:
- ci_role_stop(ci);
-rm_wq:
- flush_workqueue(ci->wq);
- destroy_workqueue(ci->wq);
+ ci_role_destroy(ci);
return ret;
}
@@ -529,10 +603,8 @@ static int ci_hdrc_remove(struct platform_device *pdev)
struct ci_hdrc *ci = platform_get_drvdata(pdev);
dbg_remove_files(ci);
- flush_workqueue(ci->wq);
- destroy_workqueue(ci->wq);
free_irq(ci->irq, ci);
- ci_role_stop(ci);
+ ci_role_destroy(ci);
return 0;
}
@@ -548,7 +620,6 @@ static struct platform_driver ci_hdrc_driver = {
module_platform_driver(ci_hdrc_driver);
MODULE_ALIAS("platform:ci_hdrc");
-MODULE_ALIAS("platform:ci13xxx");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("David Lopo <dlopo@chipidea.mips.com>");
MODULE_DESCRIPTION("ChipIdea HDRC Driver");
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 40d0fda4f66c..6f96795dd20c 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -24,6 +24,7 @@
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/usb/chipidea.h>
+#include <linux/regulator/consumer.h>
#include "../host/ehci.h"
@@ -63,10 +64,21 @@ static int host_start(struct ci_hdrc *ci)
ehci = hcd_to_ehci(hcd);
ehci->caps = ci->hw_bank.cap;
ehci->has_hostpc = ci->hw_bank.lpm;
+ ehci->has_tdi_phy_lpm = ci->hw_bank.lpm;
+
+ if (ci->platdata->reg_vbus) {
+ ret = regulator_enable(ci->platdata->reg_vbus);
+ if (ret) {
+ dev_err(ci->dev,
+ "Failed to enable vbus regulator, ret=%d\n",
+ ret);
+ goto put_hcd;
+ }
+ }
ret = usb_add_hcd(hcd, 0, 0);
if (ret)
- usb_put_hcd(hcd);
+ goto disable_reg;
else
ci->hcd = hcd;
@@ -74,6 +86,14 @@ static int host_start(struct ci_hdrc *ci)
hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS);
return ret;
+
+disable_reg:
+ regulator_disable(ci->platdata->reg_vbus);
+
+put_hcd:
+ usb_put_hcd(hcd);
+
+ return ret;
}
static void host_stop(struct ci_hdrc *ci)
@@ -82,6 +102,15 @@ static void host_stop(struct ci_hdrc *ci)
usb_remove_hcd(hcd);
usb_put_hcd(hcd);
+ if (ci->platdata->reg_vbus)
+ regulator_disable(ci->platdata->reg_vbus);
+}
+
+
+void ci_hdrc_host_destroy(struct ci_hdrc *ci)
+{
+ if (ci->role == CI_ROLE_HOST)
+ host_stop(ci);
}
int ci_hdrc_host_init(struct ci_hdrc *ci)
diff --git a/drivers/usb/chipidea/host.h b/drivers/usb/chipidea/host.h
index 058875c15333..5707bf379bfb 100644
--- a/drivers/usb/chipidea/host.h
+++ b/drivers/usb/chipidea/host.h
@@ -4,6 +4,7 @@
#ifdef CONFIG_USB_CHIPIDEA_HOST
int ci_hdrc_host_init(struct ci_hdrc *ci);
+void ci_hdrc_host_destroy(struct ci_hdrc *ci);
#else
@@ -12,6 +13,11 @@ static inline int ci_hdrc_host_init(struct ci_hdrc *ci)
return -ENXIO;
}
+static inline void ci_hdrc_host_destroy(struct ci_hdrc *ci)
+{
+
+}
+
#endif
#endif /* __DRIVERS_USB_CHIPIDEA_HOST_H */
diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c
new file mode 100644
index 000000000000..39bd7ec8bf75
--- /dev/null
+++ b/drivers/usb/chipidea/otg.c
@@ -0,0 +1,120 @@
+/*
+ * otg.c - ChipIdea USB IP core OTG driver
+ *
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ *
+ * Author: Peter Chen
+ *
+ * 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.
+ */
+
+/*
+ * This file mainly handles otgsc register, it may include OTG operation
+ * in the future.
+ */
+
+#include <linux/usb/otg.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/chipidea.h>
+
+#include "ci.h"
+#include "bits.h"
+#include "otg.h"
+
+/**
+ * ci_otg_role - pick role based on ID pin state
+ * @ci: the controller
+ */
+enum ci_role ci_otg_role(struct ci_hdrc *ci)
+{
+ u32 sts = hw_read(ci, OP_OTGSC, ~0);
+ enum ci_role role = sts & OTGSC_ID
+ ? CI_ROLE_GADGET
+ : CI_ROLE_HOST;
+
+ return role;
+}
+
+void ci_handle_vbus_change(struct ci_hdrc *ci)
+{
+ u32 otgsc;
+
+ if (!ci->is_otg)
+ return;
+
+ otgsc = hw_read(ci, OP_OTGSC, ~0);
+
+ if (otgsc & OTGSC_BSV)
+ usb_gadget_vbus_connect(&ci->gadget);
+ else
+ usb_gadget_vbus_disconnect(&ci->gadget);
+}
+
+#define CI_VBUS_STABLE_TIMEOUT_MS 5000
+static void ci_handle_id_switch(struct ci_hdrc *ci)
+{
+ enum ci_role role = ci_otg_role(ci);
+
+ if (role != ci->role) {
+ dev_dbg(ci->dev, "switching from %s to %s\n",
+ ci_role(ci)->name, ci->roles[role]->name);
+
+ ci_role_stop(ci);
+ /* wait vbus lower than OTGSC_BSV */
+ hw_wait_reg(ci, OP_OTGSC, OTGSC_BSV, 0,
+ CI_VBUS_STABLE_TIMEOUT_MS);
+ ci_role_start(ci, role);
+ }
+}
+/**
+ * ci_otg_work - perform otg (vbus/id) event handle
+ * @work: work struct
+ */
+static void ci_otg_work(struct work_struct *work)
+{
+ struct ci_hdrc *ci = container_of(work, struct ci_hdrc, work);
+
+ if (ci->id_event) {
+ ci->id_event = false;
+ ci_handle_id_switch(ci);
+ } else if (ci->b_sess_valid_event) {
+ ci->b_sess_valid_event = false;
+ ci_handle_vbus_change(ci);
+ } else
+ dev_err(ci->dev, "unexpected event occurs at %s\n", __func__);
+
+ enable_irq(ci->irq);
+}
+
+
+/**
+ * ci_hdrc_otg_init - initialize otg struct
+ * ci: the controller
+ */
+int ci_hdrc_otg_init(struct ci_hdrc *ci)
+{
+ INIT_WORK(&ci->work, ci_otg_work);
+ ci->wq = create_singlethread_workqueue("ci_otg");
+ if (!ci->wq) {
+ dev_err(ci->dev, "can't create workqueue\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/**
+ * ci_hdrc_otg_destroy - destroy otg struct
+ * ci: the controller
+ */
+void ci_hdrc_otg_destroy(struct ci_hdrc *ci)
+{
+ if (ci->wq) {
+ flush_workqueue(ci->wq);
+ destroy_workqueue(ci->wq);
+ }
+ ci_disable_otg_interrupt(ci, OTGSC_INT_EN_BITS);
+ ci_clear_otg_interrupt(ci, OTGSC_INT_STATUS_BITS);
+}
diff --git a/drivers/usb/chipidea/otg.h b/drivers/usb/chipidea/otg.h
new file mode 100644
index 000000000000..2d9f090733bc
--- /dev/null
+++ b/drivers/usb/chipidea/otg.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ *
+ * Author: Peter Chen
+ *
+ * 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 __DRIVERS_USB_CHIPIDEA_OTG_H
+#define __DRIVERS_USB_CHIPIDEA_OTG_H
+
+static inline void ci_clear_otg_interrupt(struct ci_hdrc *ci, u32 bits)
+{
+ /* Only clear request bits */
+ hw_write(ci, OP_OTGSC, OTGSC_INT_STATUS_BITS, bits);
+}
+
+static inline void ci_enable_otg_interrupt(struct ci_hdrc *ci, u32 bits)
+{
+ hw_write(ci, OP_OTGSC, bits, bits);
+}
+
+static inline void ci_disable_otg_interrupt(struct ci_hdrc *ci, u32 bits)
+{
+ hw_write(ci, OP_OTGSC, bits, 0);
+}
+
+int ci_hdrc_otg_init(struct ci_hdrc *ci);
+void ci_hdrc_otg_destroy(struct ci_hdrc *ci);
+enum ci_role ci_otg_role(struct ci_hdrc *ci);
+void ci_handle_vbus_change(struct ci_hdrc *ci);
+
+#endif /* __DRIVERS_USB_CHIPIDEA_OTG_H */
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index e475fcda1d68..6b4c2f2eb946 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -27,6 +27,7 @@
#include "udc.h"
#include "bits.h"
#include "debug.h"
+#include "otg.h"
/* control endpoint description */
static const struct usb_endpoint_descriptor
@@ -84,8 +85,10 @@ static int hw_device_state(struct ci_hdrc *ci, u32 dma)
/* interrupt, error, port change, reset, sleep/suspend */
hw_write(ci, OP_USBINTR, ~0,
USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
} else {
hw_write(ci, OP_USBINTR, ~0, 0);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
}
return 0;
}
@@ -1445,9 +1448,6 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
unsigned long flags;
int gadget_ready = 0;
- if (!(ci->platdata->flags & CI_HDRC_PULLUP_ON_VBUS))
- return -EOPNOTSUPP;
-
spin_lock_irqsave(&ci->lock, flags);
ci->vbus_active = is_active;
if (ci->driver)
@@ -1459,6 +1459,7 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
pm_runtime_get_sync(&_gadget->dev);
hw_device_reset(ci, USBMODE_CM_DC);
hw_device_state(ci, ci->ep0out->qh.dma);
+ dev_dbg(ci->dev, "Connected to host\n");
} else {
hw_device_state(ci, 0);
if (ci->platdata->notify_event)
@@ -1466,6 +1467,7 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
CI_HDRC_CONTROLLER_STOPPED_EVENT);
_gadget_stop_activity(&ci->gadget);
pm_runtime_put_sync(&_gadget->dev);
+ dev_dbg(ci->dev, "Disconnected from host\n");
}
}
@@ -1509,6 +1511,9 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on)
{
struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
+ if (!ci->vbus_active)
+ return -EOPNOTSUPP;
+
if (is_on)
hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
else
@@ -1630,14 +1635,11 @@ static int ci_udc_start(struct usb_gadget *gadget,
ci->driver = driver;
pm_runtime_get_sync(&ci->gadget.dev);
- if (ci->platdata->flags & CI_HDRC_PULLUP_ON_VBUS) {
- if (ci->vbus_active) {
- if (ci->platdata->flags & CI_HDRC_REGS_SHARED)
- hw_device_reset(ci, USBMODE_CM_DC);
- } else {
- pm_runtime_put_sync(&ci->gadget.dev);
- goto done;
- }
+ if (ci->vbus_active) {
+ hw_device_reset(ci, USBMODE_CM_DC);
+ } else {
+ pm_runtime_put_sync(&ci->gadget.dev);
+ goto done;
}
retval = hw_device_state(ci, ci->ep0out->qh.dma);
@@ -1660,8 +1662,7 @@ static int ci_udc_stop(struct usb_gadget *gadget,
spin_lock_irqsave(&ci->lock, flags);
- if (!(ci->platdata->flags & CI_HDRC_PULLUP_ON_VBUS) ||
- ci->vbus_active) {
+ if (ci->vbus_active) {
hw_device_state(ci, 0);
if (ci->platdata->notify_event)
ci->platdata->notify_event(ci,
@@ -1796,16 +1797,15 @@ static int udc_start(struct ci_hdrc *ci)
}
}
- if (!(ci->platdata->flags & CI_HDRC_REGS_SHARED)) {
- retval = hw_device_reset(ci, USBMODE_CM_DC);
- if (retval)
- goto put_transceiver;
- }
-
if (ci->transceiver) {
retval = otg_set_peripheral(ci->transceiver->otg,
&ci->gadget);
- if (retval)
+ /*
+ * If we implement all USB functions using chipidea drivers,
+ * it doesn't need to call above API, meanwhile, if we only
+ * use gadget function, calling above API is useless.
+ */
+ if (retval && retval != -ENOTSUPP)
goto put_transceiver;
}
@@ -1816,6 +1816,9 @@ static int udc_start(struct ci_hdrc *ci)
pm_runtime_no_callbacks(&ci->gadget.dev);
pm_runtime_enable(&ci->gadget.dev);
+ /* Update ci->vbus_active */
+ ci_handle_vbus_change(ci);
+
return retval;
remove_trans:
@@ -1839,13 +1842,13 @@ free_qh_pool:
}
/**
- * udc_remove: parent remove must call this to remove UDC
+ * ci_hdrc_gadget_destroy: parent remove must call this to remove UDC
*
* No interrupts active, the IRQ has been released
*/
-static void udc_stop(struct ci_hdrc *ci)
+void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
{
- if (ci == NULL)
+ if (!ci->roles[CI_ROLE_GADGET])
return;
usb_del_gadget_udc(&ci->gadget);
@@ -1860,15 +1863,32 @@ static void udc_stop(struct ci_hdrc *ci)
if (ci->global_phy)
usb_put_phy(ci->transceiver);
}
- /* my kobject is dynamic, I swear! */
- memset(&ci->gadget, 0, sizeof(ci->gadget));
+}
+
+static int udc_id_switch_for_device(struct ci_hdrc *ci)
+{
+ if (ci->is_otg) {
+ ci_clear_otg_interrupt(ci, OTGSC_BSVIS);
+ ci_enable_otg_interrupt(ci, OTGSC_BSVIE);
+ }
+
+ return 0;
+}
+
+static void udc_id_switch_for_host(struct ci_hdrc *ci)
+{
+ if (ci->is_otg) {
+ /* host doesn't care B_SESSION_VALID event */
+ ci_clear_otg_interrupt(ci, OTGSC_BSVIS);
+ ci_disable_otg_interrupt(ci, OTGSC_BSVIE);
+ }
}
/**
* ci_hdrc_gadget_init - initialize device related bits
* ci: the controller
*
- * This function enables the gadget role, if the device is "device capable".
+ * This function initializes the gadget, if the device is "device capable".
*/
int ci_hdrc_gadget_init(struct ci_hdrc *ci)
{
@@ -1881,11 +1901,11 @@ int ci_hdrc_gadget_init(struct ci_hdrc *ci)
if (!rdrv)
return -ENOMEM;
- rdrv->start = udc_start;
- rdrv->stop = udc_stop;
+ rdrv->start = udc_id_switch_for_device;
+ rdrv->stop = udc_id_switch_for_host;
rdrv->irq = udc_irq;
rdrv->name = "gadget";
ci->roles[CI_ROLE_GADGET] = rdrv;
- return 0;
+ return udc_start(ci);
}
diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h
index 455ac2169226..e66df0020bd4 100644
--- a/drivers/usb/chipidea/udc.h
+++ b/drivers/usb/chipidea/udc.h
@@ -84,6 +84,7 @@ struct ci_hw_req {
#ifdef CONFIG_USB_CHIPIDEA_UDC
int ci_hdrc_gadget_init(struct ci_hdrc *ci);
+void ci_hdrc_gadget_destroy(struct ci_hdrc *ci);
#else
@@ -92,6 +93,11 @@ static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci)
return -ENXIO;
}
+static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
+{
+
+}
+
#endif
#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index ac5a46155200..8a1094b1182f 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -18,8 +18,6 @@
#include "ci_hdrc_imx.h"
-#define USB_DEV_MAX 4
-
#define MX25_USB_PHY_CTRL_OFFSET 0x08
#define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
@@ -32,51 +30,34 @@
#define MX6_BM_OVER_CUR_DIS BIT(7)
+struct usbmisc_ops {
+ /* It's called once when probe a usb device */
+ int (*init)(struct imx_usbmisc_data *data);
+ /* It's called once after adding a usb device */
+ int (*post)(struct imx_usbmisc_data *data);
+};
+
struct imx_usbmisc {
void __iomem *base;
spinlock_t lock;
struct clk *clk;
- struct usbmisc_usb_device usbdev[USB_DEV_MAX];
const struct usbmisc_ops *ops;
};
static struct imx_usbmisc *usbmisc;
-static struct usbmisc_usb_device *get_usbdev(struct device *dev)
-{
- int i, ret;
-
- for (i = 0; i < USB_DEV_MAX; i++) {
- if (usbmisc->usbdev[i].dev == dev)
- return &usbmisc->usbdev[i];
- else if (!usbmisc->usbdev[i].dev)
- break;
- }
-
- if (i >= USB_DEV_MAX)
- return ERR_PTR(-EBUSY);
-
- ret = usbmisc_get_init_data(dev, &usbmisc->usbdev[i]);
- if (ret)
- return ERR_PTR(ret);
-
- return &usbmisc->usbdev[i];
-}
-
-static int usbmisc_imx25_post(struct device *dev)
+static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
{
- struct usbmisc_usb_device *usbdev;
void __iomem *reg;
unsigned long flags;
u32 val;
- usbdev = get_usbdev(dev);
- if (IS_ERR(usbdev))
- return PTR_ERR(usbdev);
+ if (data->index > 2)
+ return -EINVAL;
reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
- if (usbdev->evdo) {
+ if (data->evdo) {
spin_lock_irqsave(&usbmisc->lock, flags);
val = readl(reg);
writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
@@ -87,20 +68,18 @@ static int usbmisc_imx25_post(struct device *dev)
return 0;
}
-static int usbmisc_imx53_init(struct device *dev)
+static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
{
- struct usbmisc_usb_device *usbdev;
void __iomem *reg = NULL;
unsigned long flags;
u32 val = 0;
- usbdev = get_usbdev(dev);
- if (IS_ERR(usbdev))
- return PTR_ERR(usbdev);
+ if (data->index > 3)
+ return -EINVAL;
- if (usbdev->disable_oc) {
+ if (data->disable_oc) {
spin_lock_irqsave(&usbmisc->lock, flags);
- switch (usbdev->index) {
+ switch (data->index) {
case 0:
reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
@@ -126,22 +105,19 @@ static int usbmisc_imx53_init(struct device *dev)
return 0;
}
-static int usbmisc_imx6q_init(struct device *dev)
+static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
{
-
- struct usbmisc_usb_device *usbdev;
unsigned long flags;
u32 reg;
- usbdev = get_usbdev(dev);
- if (IS_ERR(usbdev))
- return PTR_ERR(usbdev);
+ if (data->index > 3)
+ return -EINVAL;
- if (usbdev->disable_oc) {
+ if (data->disable_oc) {
spin_lock_irqsave(&usbmisc->lock, flags);
- reg = readl(usbmisc->base + usbdev->index * 4);
+ reg = readl(usbmisc->base + data->index * 4);
writel(reg | MX6_BM_OVER_CUR_DIS,
- usbmisc->base + usbdev->index * 4);
+ usbmisc->base + data->index * 4);
spin_unlock_irqrestore(&usbmisc->lock, flags);
}
@@ -160,6 +136,26 @@ static const struct usbmisc_ops imx6q_usbmisc_ops = {
.init = usbmisc_imx6q_init,
};
+int imx_usbmisc_init(struct imx_usbmisc_data *data)
+{
+ if (!usbmisc)
+ return -EPROBE_DEFER;
+ if (!usbmisc->ops->init)
+ return 0;
+ return usbmisc->ops->init(data);
+}
+EXPORT_SYMBOL_GPL(imx_usbmisc_init);
+
+int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
+{
+ if (!usbmisc)
+ return -EPROBE_DEFER;
+ if (!usbmisc->ops->post)
+ return 0;
+ return usbmisc->ops->post(data);
+}
+EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
+
static const struct of_device_id usbmisc_imx_dt_ids[] = {
{
.compatible = "fsl,imx25-usbmisc",
@@ -216,19 +212,12 @@ static int usbmisc_imx_probe(struct platform_device *pdev)
of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
data->ops = (const struct usbmisc_ops *)tmp_dev->data;
usbmisc = data;
- ret = usbmisc_set_ops(data->ops);
- if (ret) {
- usbmisc = NULL;
- clk_disable_unprepare(data->clk);
- return ret;
- }
return 0;
}
static int usbmisc_imx_remove(struct platform_device *pdev)
{
- usbmisc_unset_ops(usbmisc->ops);
clk_disable_unprepare(usbmisc->clk);
usbmisc = NULL;
return 0;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.