From: eric.y.miao@gmail.com (Eric Miao)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/7] pxa25x: separate lubbock handling to lubbock-usb transceiver
Date: Mon, 4 Apr 2011 15:01:01 +0800 [thread overview]
Message-ID: <BANLkTik42CkEDKLU6BCkcZMVQ3HqQ07aLQ@mail.gmail.com> (raw)
In-Reply-To: <1301666188-11822-4-git-send-email-dbaryshkov@gmail.com>
On Fri, Apr 1, 2011 at 9:56 PM, Dmitry Eremin-Solenikov
<dbaryshkov@gmail.com> wrote:
> Move all handling of lubbock board to separate lubbock-usb transceiver,
> removing cruft from pxa25x_udc.
>
> Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
I like this change very much. It would be perfect if someone can actually
test this, but provided Lubbock is no way popular these days, it would
just be fine.
Acked-by: Eric Miao <eric.y.miao@gmail.com>
> ---
> ?drivers/usb/gadget/pxa25x_udc.c | ? 74 ----------------
> ?drivers/usb/otg/Kconfig ? ? ? ? | ? ?8 ++
> ?drivers/usb/otg/Makefile ? ? ? ?| ? ?1 +
> ?drivers/usb/otg/lubbock-usb.c ? | ?178 +++++++++++++++++++++++++++++++++++++++
> ?4 files changed, 187 insertions(+), 74 deletions(-)
> ?create mode 100644 drivers/usb/otg/lubbock-usb.c
>
> diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
> index 444b60a..6cb32b8 100644
> --- a/drivers/usb/gadget/pxa25x_udc.c
> +++ b/drivers/usb/gadget/pxa25x_udc.c
> @@ -65,10 +65,6 @@
> ?#include <mach/pxa25x-udc.h>
> ?#endif
>
> -#ifdef CONFIG_ARCH_LUBBOCK
> -#include <mach/lubbock.h>
> -#endif
> -
> ?#include <asm/mach/udc_pxa2xx.h>
>
>
> @@ -1383,42 +1379,6 @@ EXPORT_SYMBOL(usb_gadget_unregister_driver);
>
> ?/*-------------------------------------------------------------------------*/
>
> -#ifdef CONFIG_ARCH_LUBBOCK
> -
> -/* Lubbock has separate connect and disconnect irqs. ?More typical designs
> - * use one GPIO as the VBUS IRQ, and another to control the D+ pullup.
> - */
> -
> -static irqreturn_t
> -lubbock_vbus_irq(int irq, void *_dev)
> -{
> - ? ? ? struct pxa25x_udc ? ? ? *dev = _dev;
> - ? ? ? int ? ? ? ? ? ? ? ? ? ? vbus;
> -
> - ? ? ? dev->stats.irqs++;
> - ? ? ? switch (irq) {
> - ? ? ? case LUBBOCK_USB_IRQ:
> - ? ? ? ? ? ? ? vbus = 1;
> - ? ? ? ? ? ? ? disable_irq(LUBBOCK_USB_IRQ);
> - ? ? ? ? ? ? ? enable_irq(LUBBOCK_USB_DISC_IRQ);
> - ? ? ? ? ? ? ? break;
> - ? ? ? case LUBBOCK_USB_DISC_IRQ:
> - ? ? ? ? ? ? ? vbus = 0;
> - ? ? ? ? ? ? ? disable_irq(LUBBOCK_USB_DISC_IRQ);
> - ? ? ? ? ? ? ? enable_irq(LUBBOCK_USB_IRQ);
> - ? ? ? ? ? ? ? break;
> - ? ? ? default:
> - ? ? ? ? ? ? ? return IRQ_NONE;
> - ? ? ? }
> -
> - ? ? ? pxa25x_udc_vbus_session(&dev->gadget, vbus);
> - ? ? ? return IRQ_HANDLED;
> -}
> -
> -#endif
> -
> -
> -/*-------------------------------------------------------------------------*/
>
> ?static inline void clear_ep_state (struct pxa25x_udc *dev)
> ?{
> @@ -2206,38 +2166,10 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
> ? ? ? ?}
> ? ? ? ?dev->got_irq = 1;
>
> -#ifdef CONFIG_ARCH_LUBBOCK
> - ? ? ? if (machine_is_lubbock()) {
> - ? ? ? ? ? ? ? retval = request_irq(LUBBOCK_USB_DISC_IRQ,
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? lubbock_vbus_irq,
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? driver_name, dev);
> - ? ? ? ? ? ? ? if (retval != 0) {
> - ? ? ? ? ? ? ? ? ? ? ? pr_err("%s: can't get irq %i, err %d\n",
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? driver_name, LUBBOCK_USB_DISC_IRQ, retval);
> -lubbock_fail0:
> - ? ? ? ? ? ? ? ? ? ? ? goto err_irq_lub;
> - ? ? ? ? ? ? ? }
> - ? ? ? ? ? ? ? retval = request_irq(LUBBOCK_USB_IRQ,
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? lubbock_vbus_irq,
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? driver_name, dev);
> - ? ? ? ? ? ? ? if (retval != 0) {
> - ? ? ? ? ? ? ? ? ? ? ? pr_err("%s: can't get irq %i, err %d\n",
> - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? driver_name, LUBBOCK_USB_IRQ, retval);
> - ? ? ? ? ? ? ? ? ? ? ? free_irq(LUBBOCK_USB_DISC_IRQ, dev);
> - ? ? ? ? ? ? ? ? ? ? ? goto lubbock_fail0;
> - ? ? ? ? ? ? ? }
> - ? ? ? } else
> -#endif
> ? ? ? ?create_debug_files(dev);
>
> ? ? ? ?return 0;
>
> -#ifdef CONFIG_ARCH_LUBBOCK
> - ? ? ? free_irq(LUBBOCK_USB_DISC_IRQ, dev);
> - err_irq_lub:
> -#endif
> ? ? ? ?free_irq(irq, dev);
> ?err_irq1:
> ? ? ? ?if (gpio_is_valid(dev->mach->gpio_pullup))
> @@ -2273,12 +2205,6 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev)
> ? ? ? ? ? ? ? ?free_irq(platform_get_irq(pdev, 0), dev);
> ? ? ? ? ? ? ? ?dev->got_irq = 0;
> ? ? ? ?}
> -#ifdef CONFIG_ARCH_LUBBOCK
> - ? ? ? if (machine_is_lubbock()) {
> - ? ? ? ? ? ? ? free_irq(LUBBOCK_USB_DISC_IRQ, dev);
> - ? ? ? ? ? ? ? free_irq(LUBBOCK_USB_IRQ, dev);
> - ? ? ? }
> -#endif
> ? ? ? ?if (gpio_is_valid(dev->mach->gpio_pullup))
> ? ? ? ? ? ? ? ?gpio_free(dev->mach->gpio_pullup);
>
> diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
> index daf3e5f..7ddfc54 100644
> --- a/drivers/usb/otg/Kconfig
> +++ b/drivers/usb/otg/Kconfig
> @@ -122,4 +122,12 @@ config AB8500_USB
> ? ? ? ? ? This transceiver supports high and full speed devices plus,
> ? ? ? ? ? in host mode, low speed.
>
> +config LUBBOCK_USB
> + ? ? ? tristate "Intel DBPXA250 (Lubbock) Tranceiver Driver"
> + ? ? ? depends on ARCH_LUBBOCK
> + ? ? ? ?select USB_OTG_UTILS
> + ? ? ? help
> + ? ? ? ? Enable this to support the USB UDC connectivity on Intel DBPXA250
> + ? ? ? ? development platform (so-called Lubbock).
> +
> ?endif # USB || OTG
> diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
> index e22d917..5ed42cd 100644
> --- a/drivers/usb/otg/Makefile
> +++ b/drivers/usb/otg/Makefile
> @@ -19,3 +19,4 @@ obj-$(CONFIG_USB_ULPI) ? ? ? ? ? ? ? ?+= ulpi.o
> ?obj-$(CONFIG_USB_ULPI_VIEWPORT) ? ? ? ?+= ulpi_viewport.o
> ?obj-$(CONFIG_USB_MSM_OTG) ? ? ?+= msm_otg.o
> ?obj-$(CONFIG_AB8500_USB) ? ? ? += ab8500-usb.o
> +obj-$(CONFIG_LUBBOCK_USB) ? ? ?+= lubbock-usb.o
> diff --git a/drivers/usb/otg/lubbock-usb.c b/drivers/usb/otg/lubbock-usb.c
> new file mode 100644
> index 0000000..d18c101
> --- /dev/null
> +++ b/drivers/usb/otg/lubbock-usb.c
> @@ -0,0 +1,178 @@
> +/*
> + * Intel DBPXA250 Development Platform USB UDC support
> + *
> + * Copyright (C) 2011 Dmitry Eremin-Solenikov
> + *
> + * Based on pxa25x_udc driver:
> + * Copyright (C) 2002 Intrinsyc, Inc. (Frank Becker)
> + * Copyright (C) 2003 Robert Schwebel, Pengutronix
> + * Copyright (C) 2003 Benedikt Spranger, Pengutronix
> + * Copyright (C) 2003 David Brownell
> + * Copyright (C) 2003 Joshua Wise
> + *
> + * Largely based on lubbock-usb-xceiv:
> + * Copyright (C) 2009 Texas Instruments Inc
> + */
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/dma-mapping.h>
> +#include <linux/usb.h>
> +#include <linux/usb/gadget.h>
> +#include <linux/usb/otg.h>
> +#include <linux/slab.h>
> +#include <linux/interrupt.h>
> +
> +#include <mach/lubbock.h>
> +
> +static int lubbock_udc_is_connected(void)
> +{
> + ? ? ? return (LUB_MISC_RD & (1 << 9)) == 0;
> +}
> +
> +static int lubbock_set_peripheral(struct otg_transceiver *lubbock,
> + ? ? ? ? ? ? ? struct usb_gadget *gadget)
> +{
> + ? ? ? if (!lubbock)
> + ? ? ? ? ? ? ? return -ENODEV;
> +
> + ? ? ? if (!gadget) {
> + ? ? ? ? ? ? ? lubbock->gadget = NULL;
> + ? ? ? ? ? ? ? return 0;
> + ? ? ? }
> +
> + ? ? ? lubbock->gadget = gadget;
> + ? ? ? lubbock->state = OTG_STATE_B_IDLE;
> + ? ? ? if (lubbock_udc_is_connected()) {
> + ? ? ? ? ? ? ? lubbock->state = OTG_STATE_B_PERIPHERAL;
> + ? ? ? ? ? ? ? usb_gadget_vbus_connect(lubbock->gadget);
> + ? ? ? }
> +
> + ? ? ? return 0;
> +}
> +
> +/* Lubbock has separate connect and disconnect irqs. ?More typical designs
> + * use one GPIO as the VBUS IRQ, and another to control the D+ pullup.
> + */
> +
> +static irqreturn_t
> +lubbock_vbus_irq(int irq, void *_dev)
> +{
> + ? ? ? struct otg_transceiver *lubbock = _dev;
> + ? ? ? switch (irq) {
> + ? ? ? case LUBBOCK_USB_IRQ:
> + ? ? ? ? ? ? ? lubbock->state = OTG_STATE_B_PERIPHERAL;
> + ? ? ? ? ? ? ? usb_gadget_vbus_connect(lubbock->gadget);
> +
> + ? ? ? ? ? ? ? disable_irq(LUBBOCK_USB_IRQ);
> + ? ? ? ? ? ? ? enable_irq(LUBBOCK_USB_DISC_IRQ);
> + ? ? ? ? ? ? ? break;
> + ? ? ? case LUBBOCK_USB_DISC_IRQ:
> + ? ? ? ? ? ? ? usb_gadget_vbus_disconnect(lubbock->gadget);
> + ? ? ? ? ? ? ? lubbock->state = OTG_STATE_B_IDLE;
> +
> + ? ? ? ? ? ? ? disable_irq(LUBBOCK_USB_DISC_IRQ);
> + ? ? ? ? ? ? ? enable_irq(LUBBOCK_USB_IRQ);
> + ? ? ? ? ? ? ? break;
> + ? ? ? default:
> + ? ? ? ? ? ? ? return IRQ_NONE;
> + ? ? ? }
> +
> + ? ? ? return IRQ_HANDLED;
> +}
> +
> +
> +static int __devinit lubbock_usb_xceiv_probe(struct platform_device *pdev)
> +{
> + ? ? ? struct otg_transceiver ?*lubbock;
> + ? ? ? int err;
> +
> + ? ? ? lubbock = kzalloc(sizeof *lubbock, GFP_KERNEL);
> + ? ? ? if (!lubbock)
> + ? ? ? ? ? ? ? return -ENOMEM;
> +
> + ? ? ? lubbock->dev ? ? ? ? ? ?= &pdev->dev;
> + ? ? ? lubbock->label ? ? ? ? ?= "lubbock-xceiv";
> + ? ? ? lubbock->state ? ? ? ? ?= OTG_STATE_UNDEFINED;
> + ? ? ? lubbock->set_peripheral = lubbock_set_peripheral;
> +
> + ? ? ? err = request_irq(LUBBOCK_USB_DISC_IRQ,
> + ? ? ? ? ? ? ? ? ? ? ? lubbock_vbus_irq,
> + ? ? ? ? ? ? ? ? ? ? ? IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
> + ? ? ? ? ? ? ? ? ? ? ? lubbock->label, lubbock);
> + ? ? ? if (err != 0) {
> + ? ? ? ? ? ? ? pr_err("%s: can't get irq %i, err %d\n",
> + ? ? ? ? ? ? ? ? ? ? ? lubbock->label, LUBBOCK_USB_DISC_IRQ, err);
> + ? ? ? ? ? ? ? goto err_irq_lub;
> + ? ? ? }
> + ? ? ? err = request_irq(LUBBOCK_USB_IRQ,
> + ? ? ? ? ? ? ? ? ? ? ? lubbock_vbus_irq,
> + ? ? ? ? ? ? ? ? ? ? ? IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
> + ? ? ? ? ? ? ? ? ? ? ? lubbock->label, lubbock);
> + ? ? ? if (err != 0) {
> + ? ? ? ? ? ? ? pr_err("%s: can't get irq %i, err %d\n",
> + ? ? ? ? ? ? ? ? ? ? ? lubbock->label, LUBBOCK_USB_IRQ, err);
> + ? ? ? ? ? ? ? goto err_irq_lub2;
> + ? ? ? }
> +
> + ? ? ? err = otg_set_transceiver(lubbock);
> + ? ? ? if (err) {
> + ? ? ? ? ? ? ? dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
> + ? ? ? ? ? ? ? ? ? ? ? err);
> + ? ? ? ? ? ? ? goto exit;
> + ? ? ? }
> +
> + ? ? ? platform_set_drvdata(pdev, lubbock);
> +
> + ? ? ? BLOCKING_INIT_NOTIFIER_HEAD(&lubbock->notifier);
> +
> + ? ? ? return 0;
> +exit:
> + ? ? ? free_irq(LUBBOCK_USB_IRQ, lubbock);
> +err_irq_lub2:
> + ? ? ? free_irq(LUBBOCK_USB_DISC_IRQ, lubbock);
> +err_irq_lub:
> + ? ? ? kfree(lubbock);
> + ? ? ? return err;
> +}
> +
> +static int __devexit lubbock_usb_xceiv_remove(struct platform_device *pdev)
> +{
> + ? ? ? struct otg_transceiver *lubbock = platform_get_drvdata(pdev);
> +
> + ? ? ? otg_set_transceiver(NULL);
> +
> + ? ? ? platform_set_drvdata(pdev, NULL);
> +
> + ? ? ? free_irq(LUBBOCK_USB_IRQ, lubbock);
> + ? ? ? free_irq(LUBBOCK_USB_DISC_IRQ, lubbock);
> +
> + ? ? ? kfree(lubbock);
> +
> + ? ? ? return 0;
> +}
> +
> +static struct platform_driver lubbock_usb_xceiv_driver = {
> + ? ? ? .probe ? ? ? ? ?= lubbock_usb_xceiv_probe,
> + ? ? ? .remove ? ? ? ? = __devexit_p(lubbock_usb_xceiv_remove),
> + ? ? ? .driver ? ? ? ? = {
> + ? ? ? ? ? ? ? .name ? = "lubbock_usb_xceiv",
> + ? ? ? ? ? ? ? .owner ?= THIS_MODULE,
> + ? ? ? },
> +};
> +
> +static int __init lubbock_usb_xceiv_init(void)
> +{
> + ? ? ? return platform_driver_register(&lubbock_usb_xceiv_driver);
> +}
> +subsys_initcall(lubbock_usb_xceiv_init);
> +
> +static void __exit lubbock_usb_xceiv_exit(void)
> +{
> + ? ? ? platform_driver_unregister(&lubbock_usb_xceiv_driver);
> +}
> +module_exit(lubbock_usb_xceiv_exit);
> +
> +MODULE_ALIAS("platform:lubbock_usb_xceiv");
> +MODULE_DESCRIPTION("lubbock USB Transceiver driver");
> +MODULE_LICENSE("GPL");
> +
> --
> 1.7.4.1
>
>
next prev parent reply other threads:[~2011-04-04 7:01 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-01 13:56 [PATCH 1/7] balloon3: drop udc_is_connected Dmitry Eremin-Solenikov
2011-04-01 13:56 ` [PATCH 2/7] mioa701: " Dmitry Eremin-Solenikov
2011-04-01 14:10 ` Sergei Shtylyov
2011-04-01 14:50 ` Dmitry Eremin-Solenikov
2011-04-04 6:58 ` Eric Miao
2011-04-01 13:56 ` [PATCH 3/7] stargate2: udc_is_connected is ignored for pxa27x, drop it Dmitry Eremin-Solenikov
2011-04-01 13:56 ` [PATCH 4/7] pxa25x: separate lubbock handling to lubbock-usb transceiver Dmitry Eremin-Solenikov
2011-04-04 7:01 ` Eric Miao [this message]
2011-04-04 7:04 ` Eric Miao
2011-04-06 21:21 ` Dmitry Eremin-Solenikov
2011-04-07 1:48 ` Eric Miao
2011-07-01 11:48 ` Dmitry Eremin-Solenikov
2011-07-05 7:26 ` Eric Miao
2011-07-05 13:26 ` Greg KH
2011-07-05 14:35 ` Dmitry Eremin-Solenikov
2011-04-01 13:56 ` [PATCH 5/7] lubbock: switch to using lubbock_usb_xceiv transceiver Dmitry Eremin-Solenikov
2011-04-01 13:56 ` [PATCH 6/7] pxa25x: drop handling of udc_is_connected Dmitry Eremin-Solenikov
2011-04-01 19:02 ` Sergei Shtylyov
2011-04-02 14:46 ` Dmitry Eremin-Solenikov
2011-04-01 13:56 ` [PATCH 7/7] gpio-vbus: ask for vbus_draw regulator before registering xceiv Dmitry Eremin-Solenikov
2011-04-18 8:42 ` Eric Miao
2011-05-02 23:38 ` Greg KH
2011-05-03 8:46 ` [PATCH] " Dmitry Eremin-Solenikov
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