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path: root/drivers/usb/gadget/lpc32xx_udc.c
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Diffstat (limited to 'drivers/usb/gadget/lpc32xx_udc.c')
-rw-r--r--drivers/usb/gadget/lpc32xx_udc.c215
1 files changed, 68 insertions, 147 deletions
diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c
index f1ec99e69cb..e471580a2a3 100644
--- a/drivers/usb/gadget/lpc32xx_udc.c
+++ b/drivers/usb/gadget/lpc32xx_udc.c
@@ -55,7 +55,6 @@
#include <mach/hardware.h>
#include <linux/io.h>
#include <asm/irq.h>
-#include <asm/system.h>
#include <mach/platform.h>
#include <mach/irqs.h>
@@ -141,8 +140,6 @@ struct lpc32xx_ep {
u32 totalints;
bool wedge;
-
- const struct usb_endpoint_descriptor *desc;
};
/*
@@ -556,10 +553,8 @@ static int proc_udc_show(struct seq_file *s, void *unused)
if (udc->enabled && udc->vbus) {
proc_ep_show(s, &udc->ep[0]);
- list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
- if (ep->desc)
- proc_ep_show(s, ep);
- }
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list)
+ proc_ep_show(s, ep);
}
spin_unlock_irqrestore(&udc->lock, flags);
@@ -569,7 +564,7 @@ static int proc_udc_show(struct seq_file *s, void *unused)
static int proc_udc_open(struct inode *inode, struct file *file)
{
- return single_open(file, proc_udc_show, PDE(inode)->data);
+ return single_open(file, proc_udc_show, PDE_DATA(inode));
}
static const struct file_operations proc_ops = {
@@ -1453,8 +1448,7 @@ static void udc_reinit(struct lpc32xx_udc *udc)
if (i != 0)
list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
- ep->desc = NULL;
- ep->ep.maxpacket = ep->maxpacket;
+ usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket);
INIT_LIST_HEAD(&ep->queue);
ep->req_pending = 0;
}
@@ -1474,23 +1468,7 @@ static void done(struct lpc32xx_ep *ep, struct lpc32xx_request *req, int status)
status = req->req.status;
if (ep->lep) {
- enum dma_data_direction direction;
-
- if (ep->is_in)
- direction = DMA_TO_DEVICE;
- else
- direction = DMA_FROM_DEVICE;
-
- if (req->mapped) {
- dma_unmap_single(ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- direction);
- req->req.dma = 0;
- req->mapped = 0;
- } else
- dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- direction);
+ usb_gadget_unmap_request(&udc->gadget, &req->req, ep->is_in);
/* Free DDs */
udc_dd_free(udc, req->dd_desc_ptr);
@@ -1515,7 +1493,7 @@ static void nuke(struct lpc32xx_ep *ep, int status)
done(ep, req, status);
}
- if (ep->desc && status == -ESHUTDOWN) {
+ if (status == -ESHUTDOWN) {
uda_disable_hwepint(ep->udc, ep->hwep_num);
udc_disable_hwep(ep->udc, ep->hwep_num);
}
@@ -1658,9 +1636,6 @@ static int lpc32xx_ep_disable(struct usb_ep *_ep)
nuke(ep, -ESHUTDOWN);
- /* restore the endpoint's pristine config */
- ep->desc = NULL;
-
/* Clear all DMA statuses for this EP */
udc_ep_dma_disable(udc, ep->hwep_num);
writel(1 << ep->hwep_num, USBD_EOTINTCLR(udc->udp_baseaddr));
@@ -1696,7 +1671,7 @@ static int lpc32xx_ep_enable(struct usb_ep *_ep,
unsigned long flags;
/* Verify EP data */
- if ((!_ep) || (!ep) || (!desc) || (ep->desc) ||
+ if ((!_ep) || (!ep) || (!desc) ||
(desc->bDescriptorType != USB_DT_ENDPOINT)) {
dev_dbg(udc->dev, "bad ep or descriptor\n");
return -EINVAL;
@@ -1754,7 +1729,6 @@ static int lpc32xx_ep_enable(struct usb_ep *_ep,
/* Initialize endpoint to match the selected descriptor */
ep->is_in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
- ep->desc = desc;
ep->ep.maxpacket = maxpacket;
/* Map hardware endpoint from base and direction */
@@ -1837,7 +1811,7 @@ static int lpc32xx_ep_queue(struct usb_ep *_ep,
udc = ep->udc;
- if (!_ep || (!ep->desc && ep->hwep_num_base != 0)) {
+ if (!_ep) {
dev_dbg(udc->dev, "invalid ep\n");
return -EINVAL;
}
@@ -1850,26 +1824,11 @@ static int lpc32xx_ep_queue(struct usb_ep *_ep,
}
if (ep->lep) {
- enum dma_data_direction direction;
struct lpc32xx_usbd_dd_gad *dd;
- /* Map DMA pointer */
- if (ep->is_in)
- direction = DMA_TO_DEVICE;
- else
- direction = DMA_FROM_DEVICE;
-
- if (req->req.dma == 0) {
- req->req.dma = dma_map_single(
- ep->udc->gadget.dev.parent,
- req->req.buf, req->req.length, direction);
- req->mapped = 1;
- } else {
- dma_sync_single_for_device(
- ep->udc->gadget.dev.parent, req->req.dma,
- req->req.length, direction);
- req->mapped = 0;
- }
+ status = usb_gadget_map_request(&udc->gadget, _req, ep->is_in);
+ if (status)
+ return status;
/* For the request, build a list of DDs */
dd = udc_dd_alloc(udc);
@@ -1976,7 +1935,7 @@ static int lpc32xx_ep_set_halt(struct usb_ep *_ep, int value)
struct lpc32xx_udc *udc = ep->udc;
unsigned long flags;
- if ((!ep) || (ep->desc == NULL) || (ep->hwep_num <= 1))
+ if ((!ep) || (ep->hwep_num <= 1))
return -EINVAL;
/* Don't halt an IN EP */
@@ -2262,7 +2221,7 @@ static int udc_get_status(struct lpc32xx_udc *udc, u16 reqtype, u16 wIndex)
case USB_RECIP_ENDPOINT:
tmp = wIndex & USB_ENDPOINT_NUMBER_MASK;
ep = &udc->ep[tmp];
- if ((tmp == 0) || (tmp >= NUM_ENDPOINTS) || (tmp && !ep->desc))
+ if ((tmp == 0) || (tmp >= NUM_ENDPOINTS))
return -EOPNOTSUPP;
if (wIndex & USB_DIR_IN) {
@@ -2408,7 +2367,7 @@ static void udc_handle_ep0_setup(struct lpc32xx_udc *udc)
if (i < 0) {
/* setup processing failed, force stall */
- dev_err(udc->dev,
+ dev_dbg(udc->dev,
"req %02x.%02x protocol STALL; stat %d\n",
reqtype, req, i);
udc->ep0state = WAIT_FOR_SETUP;
@@ -2599,9 +2558,8 @@ static int lpc32xx_pullup(struct usb_gadget *gadget, int is_on)
return 0;
}
-static int lpc32xx_start(struct usb_gadget_driver *driver,
- int (*bind)(struct usb_gadget *));
-static int lpc32xx_stop(struct usb_gadget_driver *driver);
+static int lpc32xx_start(struct usb_gadget *, struct usb_gadget_driver *);
+static int lpc32xx_stop(struct usb_gadget *, struct usb_gadget_driver *);
static const struct usb_gadget_ops lpc32xx_udc_ops = {
.get_frame = lpc32xx_get_frame,
@@ -2609,8 +2567,8 @@ static const struct usb_gadget_ops lpc32xx_udc_ops = {
.set_selfpowered = lpc32xx_set_selfpowered,
.vbus_session = lpc32xx_vbus_session,
.pullup = lpc32xx_pullup,
- .start = lpc32xx_start,
- .stop = lpc32xx_stop,
+ .udc_start = lpc32xx_start,
+ .udc_stop = lpc32xx_stop,
};
static void nop_release(struct device *dev)
@@ -2618,10 +2576,9 @@ static void nop_release(struct device *dev)
/* nothing to free */
}
-static struct lpc32xx_udc controller = {
+static const struct lpc32xx_udc controller_template = {
.gadget = {
.ops = &lpc32xx_udc_ops,
- .ep0 = &controller.ep[0].ep,
.name = driver_name,
.dev = {
.init_name = "gadget",
@@ -2633,7 +2590,6 @@ static struct lpc32xx_udc controller = {
.name = "ep0",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 0,
.hwep_num = 0, /* Can be 0 or 1, has special handling */
@@ -2645,7 +2601,6 @@ static struct lpc32xx_udc controller = {
.name = "ep1-int",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 2,
.hwep_num = 0, /* 2 or 3, will be set later */
@@ -2657,7 +2612,6 @@ static struct lpc32xx_udc controller = {
.name = "ep2-bulk",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 4,
.hwep_num = 0, /* 4 or 5, will be set later */
@@ -2669,7 +2623,6 @@ static struct lpc32xx_udc controller = {
.name = "ep3-iso",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 1023,
.hwep_num_base = 6,
.hwep_num = 0, /* 6 or 7, will be set later */
@@ -2681,7 +2634,6 @@ static struct lpc32xx_udc controller = {
.name = "ep4-int",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 8,
.hwep_num = 0, /* 8 or 9, will be set later */
@@ -2693,7 +2645,6 @@ static struct lpc32xx_udc controller = {
.name = "ep5-bulk",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 10,
.hwep_num = 0, /* 10 or 11, will be set later */
@@ -2705,7 +2656,6 @@ static struct lpc32xx_udc controller = {
.name = "ep6-iso",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 1023,
.hwep_num_base = 12,
.hwep_num = 0, /* 12 or 13, will be set later */
@@ -2717,7 +2667,6 @@ static struct lpc32xx_udc controller = {
.name = "ep7-int",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 14,
.hwep_num = 0,
@@ -2729,7 +2678,6 @@ static struct lpc32xx_udc controller = {
.name = "ep8-bulk",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 16,
.hwep_num = 0,
@@ -2741,7 +2689,6 @@ static struct lpc32xx_udc controller = {
.name = "ep9-iso",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 1023,
.hwep_num_base = 18,
.hwep_num = 0,
@@ -2753,7 +2700,6 @@ static struct lpc32xx_udc controller = {
.name = "ep10-int",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 20,
.hwep_num = 0,
@@ -2765,7 +2711,6 @@ static struct lpc32xx_udc controller = {
.name = "ep11-bulk",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 22,
.hwep_num = 0,
@@ -2777,7 +2722,6 @@ static struct lpc32xx_udc controller = {
.name = "ep12-iso",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 1023,
.hwep_num_base = 24,
.hwep_num = 0,
@@ -2789,7 +2733,6 @@ static struct lpc32xx_udc controller = {
.name = "ep13-int",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 26,
.hwep_num = 0,
@@ -2801,7 +2744,6 @@ static struct lpc32xx_udc controller = {
.name = "ep14-bulk",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 64,
.hwep_num_base = 28,
.hwep_num = 0,
@@ -2813,7 +2755,6 @@ static struct lpc32xx_udc controller = {
.name = "ep15-bulk",
.ops = &lpc32xx_ep_ops,
},
- .udc = &controller,
.maxpacket = 1023,
.hwep_num_base = 30,
.hwep_num = 0,
@@ -2957,10 +2898,10 @@ static void vbus_work(struct work_struct *work)
/* Get the VBUS status from the transceiver */
value = i2c_smbus_read_byte_data(udc->isp1301_i2c_client,
- ISP1301_I2C_OTG_CONTROL_2);
+ ISP1301_I2C_INTERRUPT_SOURCE);
/* VBUS on or off? */
- if (value & OTG_B_SESS_VLD)
+ if (value & INT_SESS_VLD)
udc->vbus = 1;
else
udc->vbus = 0;
@@ -2987,14 +2928,13 @@ static irqreturn_t lpc32xx_usb_vbus_irq(int irq, void *_udc)
return IRQ_HANDLED;
}
-static int lpc32xx_start(struct usb_gadget_driver *driver,
- int (*bind)(struct usb_gadget *))
+static int lpc32xx_start(struct usb_gadget *gadget,
+ struct usb_gadget_driver *driver)
{
- struct lpc32xx_udc *udc = &controller;
- int retval, i;
+ struct lpc32xx_udc *udc = to_udc(gadget);
+ int i;
- if (!driver || driver->max_speed < USB_SPEED_FULL ||
- !bind || !driver->setup) {
+ if (!driver || driver->max_speed < USB_SPEED_FULL || !driver->setup) {
dev_err(udc->dev, "bad parameter.\n");
return -EINVAL;
}
@@ -3005,24 +2945,11 @@ static int lpc32xx_start(struct usb_gadget_driver *driver,
}
udc->driver = driver;
- udc->gadget.dev.driver = &driver->driver;
udc->gadget.dev.of_node = udc->dev->of_node;
udc->enabled = 1;
udc->selfpowered = 1;
udc->vbus = 0;
- retval = bind(&udc->gadget);
- if (retval) {
- dev_err(udc->dev, "bind() returned %d\n", retval);
- udc->enabled = 0;
- udc->selfpowered = 0;
- udc->driver = NULL;
- udc->gadget.dev.driver = NULL;
- return retval;
- }
-
- dev_dbg(udc->dev, "bound to %s\n", driver->driver.name);
-
/* Force VBUS process once to check for cable insertion */
udc->last_vbus = udc->vbus = 0;
schedule_work(&udc->vbus_job);
@@ -3034,22 +2961,19 @@ static int lpc32xx_start(struct usb_gadget_driver *driver,
return 0;
}
-static int lpc32xx_stop(struct usb_gadget_driver *driver)
+static int lpc32xx_stop(struct usb_gadget *gadget,
+ struct usb_gadget_driver *driver)
{
int i;
- struct lpc32xx_udc *udc = &controller;
+ struct lpc32xx_udc *udc = to_udc(gadget);
- if (!driver || driver != udc->driver || !driver->unbind)
+ if (!driver || driver != udc->driver)
return -EINVAL;
- /* Disable USB pullup */
- isp1301_pullup_enable(udc, 0, 1);
-
for (i = IRQ_USB_LP; i <= IRQ_USB_ATX; i++)
disable_irq(udc->udp_irq[i]);
if (udc->clocked) {
-
spin_lock(&udc->lock);
stop_activity(udc);
spin_unlock(&udc->lock);
@@ -3069,20 +2993,15 @@ static int lpc32xx_stop(struct usb_gadget_driver *driver)
}
udc->enabled = 0;
- pullup(udc, 0);
-
- driver->unbind(&udc->gadget);
- udc->gadget.dev.driver = NULL;
udc->driver = NULL;
- dev_dbg(udc->dev, "unbound from %s\n", driver->driver.name);
return 0;
}
static void lpc32xx_udc_shutdown(struct platform_device *dev)
{
/* Force disconnect on reboot */
- struct lpc32xx_udc *udc = &controller;
+ struct lpc32xx_udc *udc = platform_get_drvdata(dev);
pullup(udc, 0);
}
@@ -3120,12 +3039,21 @@ static u64 lpc32xx_usbd_dmamask = ~(u32) 0x7F;
static int __init lpc32xx_udc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct lpc32xx_udc *udc = &controller;
+ struct lpc32xx_udc *udc;
int retval, i;
struct resource *res;
dma_addr_t dma_handle;
struct device_node *isp1301_node;
+ udc = kzalloc(sizeof(*udc), GFP_KERNEL);
+ if (!udc)
+ return -ENOMEM;
+
+ memcpy(udc, &controller_template, sizeof(*udc));
+ for (i = 0; i <= 15; i++)
+ udc->ep[i].udc = udc;
+ udc->gadget.ep0 = &udc->ep[0].ep;
+
/* init software state */
udc->gadget.dev.parent = dev;
udc->pdev = pdev;
@@ -3140,14 +3068,18 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev)
}
udc->isp1301_i2c_client = isp1301_get_client(isp1301_node);
- if (!udc->isp1301_i2c_client)
- return -EPROBE_DEFER;
+ if (!udc->isp1301_i2c_client) {
+ retval = -EPROBE_DEFER;
+ goto phy_fail;
+ }
dev_info(udc->dev, "ISP1301 I2C device at address 0x%x\n",
udc->isp1301_i2c_client->addr);
pdev->dev.dma_mask = &lpc32xx_usbd_dmamask;
- pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ retval = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (retval)
+ goto resource_fail;
udc->board = &lpc32xx_usbddata;
@@ -3160,8 +3092,10 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev)
* IORESOURCE_IRQ, USB transceiver interrupt number
*/
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENXIO;
+ if (!res) {
+ retval = -ENXIO;
+ goto resource_fail;
+ }
spin_lock_init(&udc->lock);
@@ -3171,7 +3105,8 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev)
if (udc->udp_irq[i] < 0) {
dev_err(udc->dev,
"irq resource %d not available!\n", i);
- return udc->udp_irq[i];
+ retval = udc->udp_irq[i];
+ goto irq_fail;
}
}
@@ -3179,7 +3114,8 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev)
udc->io_p_size = resource_size(res);
if (!request_mem_region(udc->io_p_start, udc->io_p_size, driver_name)) {
dev_err(udc->dev, "someone's using UDC memory\n");
- return -EBUSY;
+ retval = -EBUSY;
+ goto request_mem_region_fail;
}
udc->udp_baseaddr = ioremap(udc->io_p_start, udc->io_p_size);
@@ -3208,7 +3144,7 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev)
udc->usb_otg_clk = clk_get(&pdev->dev, "ck_usb_otg");
if (IS_ERR(udc->usb_otg_clk)) {
dev_err(udc->dev, "failed to acquire USB otg clock\n");
- retval = PTR_ERR(udc->usb_slv_clk);
+ retval = PTR_ERR(udc->usb_otg_clk);
goto usb_otg_clk_get_fail;
}
@@ -3280,12 +3216,6 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev)
udc_disable(udc);
udc_reinit(udc);
- retval = device_register(&udc->gadget.dev);
- if (retval < 0) {
- dev_err(udc->dev, "Device registration failure\n");
- goto dev_register_fail;
- }
-
/* Request IRQs - low and high priority USB device IRQs are routed to
* the same handler, while the DMA interrupt is routed elsewhere */
retval = request_irq(udc->udp_irq[IRQ_USB_LP], lpc32xx_usb_lp_irq,
@@ -3352,8 +3282,6 @@ irq_dev_fail:
irq_hp_fail:
free_irq(udc->udp_irq[IRQ_USB_LP], udc);
irq_lp_fail:
- device_unregister(&udc->gadget.dev);
-dev_register_fail:
dma_pool_destroy(udc->dd_cache);
dma_alloc_fail:
dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE,
@@ -3366,9 +3294,9 @@ usb_clk_enable_fail:
pll_set_fail:
clk_disable(udc->usb_pll_clk);
pll_enable_fail:
- clk_put(udc->usb_slv_clk);
-usb_otg_clk_get_fail:
clk_put(udc->usb_otg_clk);
+usb_otg_clk_get_fail:
+ clk_put(udc->usb_slv_clk);
usb_clk_get_fail:
clk_put(udc->usb_pll_clk);
pll_get_fail:
@@ -3376,11 +3304,15 @@ pll_get_fail:
io_map_fail:
release_mem_region(udc->io_p_start, udc->io_p_size);
dev_err(udc->dev, "%s probe failed, %d\n", driver_name, retval);
-
+request_mem_region_fail:
+irq_fail:
+resource_fail:
+phy_fail:
+ kfree(udc);
return retval;
}
-static int __devexit lpc32xx_udc_remove(struct platform_device *pdev)
+static int lpc32xx_udc_remove(struct platform_device *pdev)
{
struct lpc32xx_udc *udc = platform_get_drvdata(pdev);
@@ -3404,8 +3336,6 @@ static int __devexit lpc32xx_udc_remove(struct platform_device *pdev)
free_irq(udc->udp_irq[IRQ_USB_HP], udc);
free_irq(udc->udp_irq[IRQ_USB_LP], udc);
- device_unregister(&udc->gadget.dev);
-
clk_disable(udc->usb_otg_clk);
clk_put(udc->usb_otg_clk);
clk_disable(udc->usb_slv_clk);
@@ -3414,6 +3344,7 @@ static int __devexit lpc32xx_udc_remove(struct platform_device *pdev)
clk_put(udc->usb_pll_clk);
iounmap(udc->udp_baseaddr);
release_mem_region(udc->io_p_start, udc->io_p_size);
+ kfree(udc);
return 0;
}
@@ -3474,7 +3405,7 @@ MODULE_DEVICE_TABLE(of, lpc32xx_udc_of_match);
#endif
static struct platform_driver lpc32xx_udc_driver = {
- .remove = __devexit_p(lpc32xx_udc_remove),
+ .remove = lpc32xx_udc_remove,
.shutdown = lpc32xx_udc_shutdown,
.suspend = lpc32xx_udc_suspend,
.resume = lpc32xx_udc_resume,
@@ -3485,17 +3416,7 @@ static struct platform_driver lpc32xx_udc_driver = {
},
};
-static int __init udc_init_module(void)
-{
- return platform_driver_probe(&lpc32xx_udc_driver, lpc32xx_udc_probe);
-}
-module_init(udc_init_module);
-
-static void __exit udc_exit_module(void)
-{
- platform_driver_unregister(&lpc32xx_udc_driver);
-}
-module_exit(udc_exit_module);
+module_platform_driver_probe(lpc32xx_udc_driver, lpc32xx_udc_probe);
MODULE_DESCRIPTION("LPC32XX udc driver");
MODULE_AUTHOR("Kevin Wells <kevin.wells@nxp.com>");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-17 13:32:53 +0000