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authorLukasz Majewski <l.majewski@samsung.com>2011-10-27 10:36:46 +0200
committerRemy Bohmer <linux@bohmer.net>2011-12-11 14:44:40 +0100
commit38517a7821d531aabe8e14a3806a7913b14a57b2 (patch)
tree405bc0d8c0bf84206d94e4a51776347d5cbb7010 /include
parent5f4b4f2fed3ab8590c8c06b78642f8c1467acacf (diff)
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usb:gadget:s5p USB Device Controller (UDC) implementation
This commit provides UDC driver support for Samsung's SoC family of processors. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Remy Bohmer <linux@bohmer.net>
Diffstat (limited to 'include')
-rw-r--r--include/usb/lin_gadget_compat.h62
-rw-r--r--include/usb/s3c_udc.h175
2 files changed, 237 insertions, 0 deletions
diff --git a/include/usb/lin_gadget_compat.h b/include/usb/lin_gadget_compat.h
new file mode 100644
index 0000000..9b31511
--- /dev/null
+++ b/include/usb/lin_gadget_compat.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2011 Samsung Electronics
+ * Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * This is a Linux kernel compatibility layer for USB Gadget
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __LIN_COMPAT_H__
+#define __LIN_COMPAT_H__
+
+/* common */
+#define spin_lock_init(...)
+#define spin_lock(...)
+#define spin_lock_irqsave(lock, flags) do {flags = 1; } while (0)
+#define spin_unlock(...)
+#define spin_unlock_irqrestore(lock, flags) do {flags = 0; } while (0)
+#define disable_irq(...)
+#define enable_irq(...)
+
+#define mutex_init(...)
+#define mutex_lock(...)
+#define mutex_unlock(...)
+
+#define WARN_ON(x) if (x) {printf("WARNING in %s line %d\n" \
+ , __FILE__, __LINE__); }
+
+#define KERN_WARNING
+#define KERN_ERR
+#define KERN_NOTICE
+#define KERN_DEBUG
+
+#define GFP_KERNEL 0
+
+#define IRQ_HANDLED 1
+
+#define ENOTSUPP 524 /* Operation is not supported */
+
+#define kmalloc(size, type) memalign(CONFIG_SYS_CACHELINE_SIZE, size)
+#define kfree(addr) free(addr)
+#define mdelay(n) ({unsigned long msec = (n); while (msec--) udelay(1000); })
+
+#define __iomem
+#define min_t min
+#define dma_cache_maint(addr, size, mode) cache_flush()
+void cache_flush(void);
+
+#endif /* __LIN_COMPAT_H__ */
diff --git a/include/usb/s3c_udc.h b/include/usb/s3c_udc.h
new file mode 100644
index 0000000..14dadc8
--- /dev/null
+++ b/include/usb/s3c_udc.h
@@ -0,0 +1,175 @@
+/*
+ * drivers/usb/gadget/s3c_udc.h
+ * Samsung S3C on-chip full/high speed USB device controllers
+ * Copyright (C) 2005 for Samsung Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef __S3C_USB_GADGET
+#define __S3C_USB_GADGET
+
+#include <asm/errno.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/list.h>
+#include <usb/lin_gadget_compat.h>
+
+#define PHY0_SLEEP (1 << 5)
+
+/*-------------------------------------------------------------------------*/
+/* DMA bounce buffer size, 16K is enough even for mass storage */
+#define DMA_BUFFER_SIZE (4096*4)
+
+#define EP0_FIFO_SIZE 64
+#define EP_FIFO_SIZE 512
+#define EP_FIFO_SIZE2 1024
+/* ep0-control, ep1in-bulk, ep2out-bulk, ep3in-int */
+#define S3C_MAX_ENDPOINTS 4
+#define S3C_MAX_HW_ENDPOINTS 16
+
+#define WAIT_FOR_SETUP 0
+#define DATA_STATE_XMIT 1
+#define DATA_STATE_NEED_ZLP 2
+#define WAIT_FOR_OUT_STATUS 3
+#define DATA_STATE_RECV 4
+#define WAIT_FOR_COMPLETE 5
+#define WAIT_FOR_OUT_COMPLETE 6
+#define WAIT_FOR_IN_COMPLETE 7
+#define WAIT_FOR_NULL_COMPLETE 8
+
+#define TEST_J_SEL 0x1
+#define TEST_K_SEL 0x2
+#define TEST_SE0_NAK_SEL 0x3
+#define TEST_PACKET_SEL 0x4
+#define TEST_FORCE_ENABLE_SEL 0x5
+
+/* ************************************************************************* */
+/* IO
+ */
+
+enum ep_type {
+ ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
+};
+
+struct s3c_ep {
+ struct usb_ep ep;
+ struct s3c_udc *dev;
+
+ const struct usb_endpoint_descriptor *desc;
+ struct list_head queue;
+ unsigned long pio_irqs;
+ int len;
+ void *dma_buf;
+
+ u8 stopped;
+ u8 bEndpointAddress;
+ u8 bmAttributes;
+
+ enum ep_type ep_type;
+ int fifo_num;
+};
+
+struct s3c_request {
+ struct usb_request req;
+ struct list_head queue;
+};
+
+struct s3c_udc {
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+
+ struct s3c_plat_otg_data *pdata;
+
+ void *dma_buf[S3C_MAX_ENDPOINTS+1];
+ dma_addr_t dma_addr[S3C_MAX_ENDPOINTS+1];
+
+ int ep0state;
+ struct s3c_ep ep[S3C_MAX_ENDPOINTS];
+
+ unsigned char usb_address;
+
+ unsigned req_pending:1, req_std:1, req_config:1;
+};
+
+extern struct s3c_udc *the_controller;
+
+#define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN) == USB_DIR_IN)
+#define ep_index(EP) ((EP)->bEndpointAddress&0xF)
+#define ep_maxpacket(EP) ((EP)->ep.maxpacket)
+
+/*-------------------------------------------------------------------------*/
+/* #define DEBUG_UDC */
+#ifdef DEBUG_UDC
+#define DBG(stuff...) printf("udc: " stuff)
+#else
+#define DBG(stuff...) do {} while (0)
+#endif
+
+#ifdef DEBUG_S3C_UDC_SETUP
+#define DEBUG_SETUP(fmt, args...) printk(fmt, ##args)
+#else
+#define DEBUG_SETUP(fmt, args...) do {} while (0)
+#endif
+
+#ifdef DEBUG_S3C_UDC_EP0
+#define DEBUG_EP0(fmt, args...) printk(fmt, ##args)
+#else
+#define DEBUG_EP0(fmt, args...) do {} while (0)
+#endif
+
+#ifdef DEBUG_S3C_UDC
+#define DEBUG(fmt, args...) printk(fmt, ##args)
+#else
+#define DEBUG(fmt, args...) do {} while (0)
+#endif
+
+#ifdef DEBUG_S3C_UDC_ISR
+#define DEBUG_ISR(fmt, args...) printk(fmt, ##args)
+#else
+#define DEBUG_ISR(fmt, args...) do {} while (0)
+#endif
+
+#ifdef DEBUG_S3C_UDC_OUT_EP
+#define DEBUG_OUT_EP(fmt, args...) printk(fmt, ##args)
+#else
+#define DEBUG_OUT_EP(fmt, args...) do {} while (0)
+#endif
+
+#ifdef DEBUG_S3C_UDC_IN_EP
+#define DEBUG_IN_EP(fmt, args...) printk(fmt, ##args)
+#else
+#define DEBUG_IN_EP(fmt, args...) do {} while (0)
+#endif
+
+#define ERR(stuff...) printf("ERR udc: " stuff)
+#define WARN(stuff...) printf("WARNING udc: " stuff)
+#define INFO(stuff...) printf("INFO udc: " stuff)
+
+extern void otg_phy_init(struct s3c_udc *dev);
+extern void otg_phy_off(struct s3c_udc *dev);
+
+extern void s3c_udc_ep_set_stall(struct s3c_ep *ep);
+extern int s3c_udc_probe(struct s3c_plat_otg_data *pdata);
+
+struct s3c_plat_otg_data {
+ int (*phy_control)(int on);
+ unsigned int regs_phy;
+ unsigned int regs_otg;
+ unsigned int usb_phy_ctrl;
+ unsigned int usb_flags;
+};
+#endif