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Message-Id: <20161108185723.17518-3-ahaslam@baylibre.com>
Date: Tue, 8 Nov 2016 19:57:22 +0100
From: Axel Haslam <ahaslam@...libre.com>
To: gregkh@...uxfoundation.org, stern@...land.harvard.edu,
nsekhar@...com, khilman@...nel.org, david@...hnology.com
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Axel Haslam <ahaslam@...libre.com>
Subject: [PATCH v4 2/3] USB: ohci: da8xx: Prepare to remove platform callbacks
Wrap the platform data callbacks into separate functions.
This will help migrate to using a regulator by providing a well defined
place to implement the regulator functions while the platform calls
are still in place and users have not been converted.
The platform callbacks will be removed on a following patch.
Signed-off-by: Axel Haslam <ahaslam@...libre.com>
---
drivers/usb/host/ohci-da8xx.c | 125 ++++++++++++++++++++++++++++++++++--------
1 file changed, 102 insertions(+), 23 deletions(-)
diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 0442c64..9ed43c7 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -80,6 +80,72 @@ static void ohci_da8xx_disable(struct usb_hcd *hcd)
clk_disable_unprepare(da8xx_ohci->usb11_clk);
}
+static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->set_power)
+ return hub->set_power(1, on);
+
+ return 0;
+}
+
+static int ohci_da8xx_get_power(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->get_power)
+ return hub->get_power(1);
+
+ return 1;
+}
+
+static int ohci_da8xx_get_oci(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->get_oci)
+ return hub->get_oci(1);
+
+ return 0;
+}
+
+static int ohci_da8xx_has_set_power(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->set_power)
+ return 1;
+
+ return 0;
+}
+
+static int ohci_da8xx_has_oci(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->get_oci)
+ return 1;
+
+ return 0;
+}
+
+static int ohci_da8xx_has_potpgt(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->potpgt)
+ return 1;
+
+ return 0;
+}
+
/*
* Handle the port over-current indicator change.
*/
@@ -93,6 +159,26 @@ static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub,
hub->set_power(port, 0);
}
+static int ohci_da8xx_register_notify(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->ocic_notify)
+ return hub->ocic_notify(ohci_da8xx_ocic_handler);
+
+ return 0;
+}
+
+static void ohci_da8xx_unregister_notify(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+
+ if (hub && hub->ocic_notify)
+ hub->ocic_notify(NULL);
+}
+
static int ohci_da8xx_reset(struct usb_hcd *hcd)
{
struct device *dev = hcd->self.controller;
@@ -126,16 +212,18 @@ static int ohci_da8xx_reset(struct usb_hcd *hcd)
* the correct hub descriptor...
*/
rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
- if (hub->set_power) {
+ if (ohci_da8xx_has_set_power(hcd)) {
rh_a &= ~RH_A_NPS;
rh_a |= RH_A_PSM;
}
- if (hub->get_oci) {
+ if (ohci_da8xx_has_oci(hcd)) {
rh_a &= ~RH_A_NOCP;
rh_a |= RH_A_OCPM;
}
- rh_a &= ~RH_A_POTPGT;
- rh_a |= hub->potpgt << 24;
+ if (ohci_da8xx_has_potpgt(hcd)) {
+ rh_a &= ~RH_A_POTPGT;
+ rh_a |= hub->potpgt << 24;
+ }
ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
return result;
@@ -168,7 +256,6 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wIndex, char *buf, u16 wLength)
{
struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
int temp;
switch (typeReq) {
@@ -182,11 +269,11 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp = roothub_portstatus(hcd_to_ohci(hcd), wIndex - 1);
/* The port power status (PPS) bit defaults to 1 */
- if (hub->get_power && hub->get_power(wIndex) == 0)
+ if (!ohci_da8xx_get_power(hcd))
temp &= ~RH_PS_PPS;
/* The port over-current indicator (POCI) bit is always 0 */
- if (hub->get_oci && hub->get_oci(wIndex) > 0)
+ if (ohci_da8xx_get_oci(hcd))
temp |= RH_PS_POCI;
/* The over-current indicator change (OCIC) bit is 0 too */
@@ -211,10 +298,7 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
dev_dbg(dev, "%sPortFeature(%u): %s\n",
temp ? "Set" : "Clear", wIndex, "POWER");
- if (!hub->set_power)
- return -EPIPE;
-
- return hub->set_power(wIndex, temp) ? -EPIPE : 0;
+ return ohci_da8xx_set_power(hcd, temp) ? -EPIPE : 0;
case USB_PORT_FEAT_C_OVER_CURRENT:
dev_dbg(dev, "%sPortFeature(%u): %s\n",
temp ? "Set" : "Clear", wIndex,
@@ -236,15 +320,10 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
static int ohci_da8xx_probe(struct platform_device *pdev)
{
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(&pdev->dev);
struct da8xx_ohci_hcd *da8xx_ohci;
struct usb_hcd *hcd;
struct resource *mem;
int error, irq;
-
- if (hub == NULL)
- return -ENODEV;
-
hcd = usb_create_hcd(&ohci_da8xx_hc_driver, &pdev->dev,
dev_name(&pdev->dev));
if (!hcd)
@@ -290,12 +369,13 @@ static int ohci_da8xx_probe(struct platform_device *pdev)
device_wakeup_enable(hcd->self.controller);
- if (hub->ocic_notify) {
- error = hub->ocic_notify(ohci_da8xx_ocic_handler);
- if (!error)
- return 0;
- }
+ error = ohci_da8xx_register_notify(hcd);
+ if (error)
+ goto err_remove_hcd;
+
+ return 0;
+err_remove_hcd:
usb_remove_hcd(hcd);
err:
usb_put_hcd(hcd);
@@ -305,9 +385,8 @@ static int ohci_da8xx_probe(struct platform_device *pdev)
static int ohci_da8xx_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(&pdev->dev);
- hub->ocic_notify(NULL);
+ ohci_da8xx_unregister_notify(hcd);
usb_remove_hcd(hcd);
usb_put_hcd(hcd);
--
2.10.1
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