From eb81955bf0e34aeb33930cd4b2f63aa05c791fef Mon Sep 17 00:00:00 2001 From: Ilya Yanok Date: Tue, 6 Nov 2012 13:48:21 +0000 Subject: musb-new: port of Linux musb driver Existing U-Boot musb driver has no support for the new gadget framework and also seems to have other limitations. As gadget framework is ported from Linux it seems pretty natural to port musb gadget driver as well. This driver supports both host and peripheral modes. This is not a replacement for current musb driver (at least now) as there are still some consumers of the old UDC interface. No DMA operation support included, CONFIG_MUSB_PIO_ONLY should be defined. Virtual root hub device is not implemented. Known problems: with no devices connected usb_lowlevel_start() fails. Signed-off-by: Ilya Yanok --- drivers/usb/musb-new/linux-compat.h | 106 ++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 drivers/usb/musb-new/linux-compat.h (limited to 'drivers/usb/musb-new/linux-compat.h') diff --git a/drivers/usb/musb-new/linux-compat.h b/drivers/usb/musb-new/linux-compat.h new file mode 100644 index 0000000..2bd7634 --- /dev/null +++ b/drivers/usb/musb-new/linux-compat.h @@ -0,0 +1,106 @@ +#ifndef __LINUX_COMPAT_H__ +#define __LINUX_COMPAT_H__ + +#include +#include +#include + +#define __init +#define __devinit +#define __devinitdata +#define __devinitconst +#define __iomem +#define __deprecated + +typedef enum { false = 0, true = 1 } bool; + +struct unused {}; +typedef struct unused unused_t; + +typedef int irqreturn_t; +typedef unused_t spinlock_t; + +struct work_struct {}; + +struct timer_list {}; +struct notifier_block {}; + +typedef unsigned long dmaaddr_t; + +#define spin_lock_init(lock) do {} while (0) +#define spin_lock(lock) do {} while (0) +#define spin_unlock(lock) do {} while (0) +#define spin_lock_irqsave(lock, flags) do {} while (0) +#define spin_unlock_irqrestore(lock, flags) do {} while (0) + +#define setup_timer(timer, func, data) do {} while (0) +#define schedule_work(work) do {} while (0) +#define INIT_WORK(work, fun) do {} while (0) + +#define cpu_relax() do {} while (0) + +#define pr_debug(fmt, args...) debug(fmt, ##args) +#define dev_dbg(dev, fmt, args...) \ + debug(fmt, ##args) +#define dev_vdbg(dev, fmt, args...) \ + debug(fmt, ##args) +#define dev_info(dev, fmt, args...) \ + printf(fmt, ##args) +#define dev_err(dev, fmt, args...) \ + printf(fmt, ##args) +#define printk printf + +#define WARN(condition, fmt, args...) ({ \ + int ret_warn = !!condition; \ + if (ret_warn) \ + printf(fmt, ##args); \ + ret_warn; }) + +#define KERN_DEBUG +#define KERN_NOTICE +#define KERN_WARNING +#define KERN_ERR + +#define kfree(ptr) free(ptr) + +#define pm_runtime_get_sync(dev) do {} while (0) +#define pm_runtime_put(dev) do {} while (0) +#define pm_runtime_put_sync(dev) do {} while (0) +#define pm_runtime_use_autosuspend(dev) do {} while (0) +#define pm_runtime_set_autosuspend_delay(dev, delay) do {} while (0) +#define pm_runtime_enable(dev) do {} while (0) + +#define MODULE_DESCRIPTION(desc) +#define MODULE_AUTHOR(author) +#define MODULE_LICENSE(license) +#define MODULE_ALIAS(alias) +#define module_param(name, type, perm) +#define MODULE_PARM_DESC(name, desc) +#define EXPORT_SYMBOL_GPL(name) + +#define writesl(a, d, s) __raw_writesl((unsigned long)a, d, s) +#define readsl(a, d, s) __raw_readsl((unsigned long)a, d, s) +#define writesw(a, d, s) __raw_writesw((unsigned long)a, d, s) +#define readsw(a, d, s) __raw_readsw((unsigned long)a, d, s) +#define writesb(a, d, s) __raw_writesb((unsigned long)a, d, s) +#define readsb(a, d, s) __raw_readsb((unsigned long)a, d, s) + +#define IRQ_NONE 0 +#define IRQ_HANDLED 0 + +#define dev_set_drvdata(dev, data) do {} while (0) + +#define disable_irq_wake(irq) do {} while (0) +#define enable_irq_wake(irq) -EINVAL +#define free_irq(irq, data) do {} while (0) +#define request_irq(nr, f, flags, nm, data) 0 + +#define device_init_wakeup(dev, a) do {} while (0) + +#define platform_data device_data + +#ifndef wmb +#define wmb() asm volatile ("" : : : "memory") +#endif + +#endif /* __LINUX_COMPAT_H__ */ -- cgit v1.1 From 833a53c627b839a28b5925ba283109b141f6cff0 Mon Sep 17 00:00:00 2001 From: Ilya Yanok Date: Tue, 6 Nov 2012 13:48:25 +0000 Subject: musb-new: am35x backend driver Backend driver for MUSB OTG controllers found on TI AM35x. It seems that on AM35X interrupt status registers can be updated _before_ core registers. As we don't use true interrupts in U-Boot and poll interrupt status registers instead this can result in interrupt handler being called with non-updated core registers. This confuses the code and result in hanged transfers. Add a small delay in am35x_interrupt as a workaround. Signed-off-by: Ilya Yanok --- drivers/usb/musb-new/linux-compat.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb/musb-new/linux-compat.h') diff --git a/drivers/usb/musb-new/linux-compat.h b/drivers/usb/musb-new/linux-compat.h index 2bd7634..6ecdb3e 100644 --- a/drivers/usb/musb-new/linux-compat.h +++ b/drivers/usb/musb-new/linux-compat.h @@ -103,4 +103,5 @@ typedef unsigned long dmaaddr_t; #define wmb() asm volatile ("" : : : "memory") #endif +#define msleep(a) udelay(a * 1000) #endif /* __LINUX_COMPAT_H__ */ -- cgit v1.1 From 673a524b6a71a7ab74a48b75728307b1a5303587 Mon Sep 17 00:00:00 2001 From: Ilya Yanok Date: Tue, 6 Nov 2012 13:48:29 +0000 Subject: musb-new: omap2plus backend driver Backend driver for MUSB OTG controllers found on TI OMAP2/3/4 (tested only on OMAP3 Beagle). Signed-off-by: Ilya Yanok --- drivers/usb/musb-new/linux-compat.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/usb/musb-new/linux-compat.h') diff --git a/drivers/usb/musb-new/linux-compat.h b/drivers/usb/musb-new/linux-compat.h index 6ecdb3e..5c126ef 100644 --- a/drivers/usb/musb-new/linux-compat.h +++ b/drivers/usb/musb-new/linux-compat.h @@ -34,6 +34,7 @@ typedef unsigned long dmaaddr_t; #define spin_unlock_irqrestore(lock, flags) do {} while (0) #define setup_timer(timer, func, data) do {} while (0) +#define del_timer_sync(timer) do {} while (0) #define schedule_work(work) do {} while (0) #define INIT_WORK(work, fun) do {} while (0) @@ -104,4 +105,12 @@ typedef unsigned long dmaaddr_t; #endif #define msleep(a) udelay(a * 1000) + +/* + * Map U-Boot config options to Linux ones + */ +#ifdef CONFIG_OMAP34XX +#define CONFIG_SOC_OMAP3430 +#endif + #endif /* __LINUX_COMPAT_H__ */ -- cgit v1.1