mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-08-20 09:32:05 +03:00
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31902 3c298f89-4303-0410-b956-a3cf2f4a3e73
2372 lines
60 KiB
Diff
2372 lines
60 KiB
Diff
From 537082e01849ca85227c5b462b8ac9aceb11b77a Mon Sep 17 00:00:00 2001
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From: Lars-Peter Clausen <lars@metafoo.de>
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Date: Sat, 24 Apr 2010 12:18:46 +0200
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Subject: [PATCH 02/21] Add jz4740 udc driver
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History:
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- driver by Ingenic
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- patch by Lars-Peter Clausen.
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- updated to 3.1 by Maarten ter Huurne
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---
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drivers/usb/gadget/Kconfig | 8 +
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drivers/usb/gadget/Makefile | 1 +
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drivers/usb/gadget/gadget_chips.h | 3 +
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drivers/usb/gadget/jz4740_udc.c | 2199 +++++++++++++++++++++++++++++++++++++
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drivers/usb/gadget/jz4740_udc.h | 101 ++
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5 files changed, 2312 insertions(+), 0 deletions(-)
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create mode 100644 drivers/usb/gadget/jz4740_udc.c
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create mode 100644 drivers/usb/gadget/jz4740_udc.h
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--- a/drivers/usb/gadget/Kconfig
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+++ b/drivers/usb/gadget/Kconfig
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@@ -178,6 +178,14 @@ config USB_FUSB300
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help
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Faraday usb device controller FUSB300 driver
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+config USB_JZ4740
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+ tristate "JZ4740 UDC"
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+ depends on MACH_JZ4740
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+ select USB_GADGET_DUALSPEED
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+ help
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+ Select this to support the Ingenic JZ4740 processor
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+ high speed USB device controller.
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+
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config USB_OMAP
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tristate "OMAP USB Device Controller"
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depends on ARCH_OMAP
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--- a/drivers/usb/gadget/Makefile
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+++ b/drivers/usb/gadget/Makefile
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@@ -31,6 +31,7 @@ obj-$(CONFIG_USB_MV_UDC) += mv_udc.o
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mv_udc-y := mv_udc_core.o
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obj-$(CONFIG_USB_CI13XXX_MSM) += ci13xxx_msm.o
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obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o
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+obj-$(CONFIG_USB_JZ4740) += jz4740_udc.o
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#
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# USB gadget drivers
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--- a/drivers/usb/gadget/gadget_chips.h
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+++ b/drivers/usb/gadget/gadget_chips.h
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@@ -36,6 +36,7 @@
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#define gadget_is_fsl_usb2(g) (!strcmp("fsl-usb2-udc", (g)->name))
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#define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name))
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#define gadget_is_imx(g) (!strcmp("imx_udc", (g)->name))
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+#define gadget_is_jz4740(g) (!strcmp("ingenic_hsusb", (g)->name))
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#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name))
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#define gadget_is_m66592(g) (!strcmp("m66592_udc", (g)->name))
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#define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name))
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@@ -118,6 +119,8 @@ static inline int usb_gadget_controller_
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return 0x31;
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else if (gadget_is_dwc3(gadget))
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return 0x32;
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+ else if (gadget_is_jz4740(gadget))
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+ return 0x33;
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return -ENOENT;
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}
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--- /dev/null
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+++ b/drivers/usb/gadget/jz4740_udc.c
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@@ -0,0 +1,2199 @@
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+/*
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+ * linux/drivers/usb/gadget/jz4740_udc.c
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+ *
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+ * Ingenic JZ4740 on-chip high speed USB device controller
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+ *
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+ * Copyright (C) 2006 - 2008 Ingenic Semiconductor Inc.
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+ * Author: <jlwei@ingenic.cn>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ */
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+
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+/*
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+ * This device has ep0, two bulk-in/interrupt-in endpoints, and one bulk-out endpoint.
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+ *
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+ * - Endpoint numbering is fixed: ep0, ep1in-int, ep2in-bulk, ep1out-bulk.
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+ * - DMA works with bulk-in (channel 1) and bulk-out (channel 2) endpoints.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+#include <linux/delay.h>
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+#include <linux/ioport.h>
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+#include <linux/slab.h>
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+#include <linux/errno.h>
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+#include <linux/init.h>
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+#include <linux/list.h>
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+#include <linux/interrupt.h>
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+#include <linux/proc_fs.h>
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+#include <linux/usb.h>
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+#include <linux/usb/gadget.h>
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+#include <linux/clk.h>
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+
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+#include <asm/byteorder.h>
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+#include <asm/io.h>
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+#include <asm/irq.h>
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+#include <asm/system.h>
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+#include <asm/mach-jz4740/clock.h>
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+
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+#include "jz4740_udc.h"
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+
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+#define JZ_REG_UDC_FADDR 0x00 /* Function Address 8-bit */
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+#define JZ_REG_UDC_POWER 0x01 /* Power Management 8-bit */
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+#define JZ_REG_UDC_INTRIN 0x02 /* Interrupt IN 16-bit */
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+#define JZ_REG_UDC_INTROUT 0x04 /* Interrupt OUT 16-bit */
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+#define JZ_REG_UDC_INTRINE 0x06 /* Intr IN enable 16-bit */
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+#define JZ_REG_UDC_INTROUTE 0x08 /* Intr OUT enable 16-bit */
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+#define JZ_REG_UDC_INTRUSB 0x0a /* Interrupt USB 8-bit */
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+#define JZ_REG_UDC_INTRUSBE 0x0b /* Interrupt USB Enable 8-bit */
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+#define JZ_REG_UDC_FRAME 0x0c /* Frame number 16-bit */
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+#define JZ_REG_UDC_INDEX 0x0e /* Index register 8-bit */
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+#define JZ_REG_UDC_TESTMODE 0x0f /* USB test mode 8-bit */
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+
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+#define JZ_REG_UDC_CSR0 0x12 /* EP0 CSR 8-bit */
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+#define JZ_REG_UDC_INMAXP 0x10 /* EP1-2 IN Max Pkt Size 16-bit */
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+#define JZ_REG_UDC_INCSR 0x12 /* EP1-2 IN CSR LSB 8/16bit */
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+#define JZ_REG_UDC_INCSRH 0x13 /* EP1-2 IN CSR MSB 8-bit */
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+
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+#define JZ_REG_UDC_OUTMAXP 0x14 /* EP1 OUT Max Pkt Size 16-bit */
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+#define JZ_REG_UDC_OUTCSR 0x16 /* EP1 OUT CSR LSB 8/16bit */
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+#define JZ_REG_UDC_OUTCSRH 0x17 /* EP1 OUT CSR MSB 8-bit */
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+#define JZ_REG_UDC_OUTCOUNT 0x18 /* bytes in EP0/1 OUT FIFO 16-bit */
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+
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+#define JZ_REG_UDC_EP_FIFO(x) (4 * (x) + 0x20)
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+
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+#define JZ_REG_UDC_EPINFO 0x78 /* Endpoint information */
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+#define JZ_REG_UDC_RAMINFO 0x79 /* RAM information */
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+
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+#define JZ_REG_UDC_INTR 0x200 /* DMA pending interrupts */
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+#define JZ_REG_UDC_CNTL1 0x204 /* DMA channel 1 control */
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+#define JZ_REG_UDC_ADDR1 0x208 /* DMA channel 1 AHB memory addr */
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+#define JZ_REG_UDC_COUNT1 0x20c /* DMA channel 1 byte count */
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+#define JZ_REG_UDC_CNTL2 0x214 /* DMA channel 2 control */
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+#define JZ_REG_UDC_ADDR2 0x218 /* DMA channel 2 AHB memory addr */
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+#define JZ_REG_UDC_COUNT2 0x21c /* DMA channel 2 byte count */
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+
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+/* Power register bit masks */
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+#define USB_POWER_SUSPENDM 0x01
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+#define USB_POWER_RESUME 0x04
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+#define USB_POWER_HSMODE 0x10
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+#define USB_POWER_HSENAB 0x20
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+#define USB_POWER_SOFTCONN 0x40
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+
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+/* Interrupt register bit masks */
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+#define USB_INTR_SUSPEND 0x01
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+#define USB_INTR_RESUME 0x02
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+#define USB_INTR_RESET 0x04
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+
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+#define USB_INTR_EP0 0x0001
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+#define USB_INTR_INEP1 0x0002
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+#define USB_INTR_INEP2 0x0004
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+#define USB_INTR_OUTEP1 0x0002
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+
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+/* CSR0 bit masks */
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+#define USB_CSR0_OUTPKTRDY 0x01
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+#define USB_CSR0_INPKTRDY 0x02
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+#define USB_CSR0_SENTSTALL 0x04
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+#define USB_CSR0_DATAEND 0x08
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+#define USB_CSR0_SETUPEND 0x10
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+#define USB_CSR0_SENDSTALL 0x20
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+#define USB_CSR0_SVDOUTPKTRDY 0x40
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+#define USB_CSR0_SVDSETUPEND 0x80
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+
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+/* Endpoint CSR register bits */
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+#define USB_INCSRH_AUTOSET 0x80
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+#define USB_INCSRH_ISO 0x40
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+#define USB_INCSRH_MODE 0x20
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+#define USB_INCSRH_DMAREQENAB 0x10
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+#define USB_INCSRH_DMAREQMODE 0x04
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+#define USB_INCSR_CDT 0x40
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+#define USB_INCSR_SENTSTALL 0x20
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+#define USB_INCSR_SENDSTALL 0x10
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+#define USB_INCSR_FF 0x08
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+#define USB_INCSR_UNDERRUN 0x04
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+#define USB_INCSR_FFNOTEMPT 0x02
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+#define USB_INCSR_INPKTRDY 0x01
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+
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+#define USB_OUTCSRH_AUTOCLR 0x80
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+#define USB_OUTCSRH_ISO 0x40
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+#define USB_OUTCSRH_DMAREQENAB 0x20
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+#define USB_OUTCSRH_DNYT 0x10
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+#define USB_OUTCSRH_DMAREQMODE 0x08
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+#define USB_OUTCSR_CDT 0x80
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+#define USB_OUTCSR_SENTSTALL 0x40
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+#define USB_OUTCSR_SENDSTALL 0x20
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+#define USB_OUTCSR_FF 0x10
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+#define USB_OUTCSR_DATAERR 0x08
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+#define USB_OUTCSR_OVERRUN 0x04
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+#define USB_OUTCSR_FFFULL 0x02
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+#define USB_OUTCSR_OUTPKTRDY 0x01
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+
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+/* DMA control bits */
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+#define USB_CNTL_ENA 0x01
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+#define USB_CNTL_DIR_IN 0x02
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+#define USB_CNTL_MODE_1 0x04
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+#define USB_CNTL_INTR_EN 0x08
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+#define USB_CNTL_EP(n) ((n) << 4)
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+#define USB_CNTL_BURST_0 (0 << 9)
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+#define USB_CNTL_BURST_4 (1 << 9)
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+#define USB_CNTL_BURST_8 (2 << 9)
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+#define USB_CNTL_BURST_16 (3 << 9)
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+
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+
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+#ifndef DEBUG
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+# define DEBUG(fmt,args...) do {} while(0)
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+#endif
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+#ifndef DEBUG_EP0
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+# define NO_STATES
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+# define DEBUG_EP0(fmt,args...) do {} while(0)
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+#endif
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+#ifndef DEBUG_SETUP
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+# define DEBUG_SETUP(fmt,args...) do {} while(0)
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+#endif
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+
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+static struct jz4740_udc jz4740_udc_controller;
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+
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+/*
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+ * Local declarations.
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+ */
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+static int jz4740_udc_start(struct usb_gadget_driver *driver,
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+ int (*bind)(struct usb_gadget *));
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+static int jz4740_udc_stop(struct usb_gadget_driver *driver);
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+static void jz4740_ep0_kick(struct jz4740_udc *dev, struct jz4740_ep *ep);
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+static void jz4740_handle_ep0(struct jz4740_udc *dev, uint32_t intr);
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+
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+static void done(struct jz4740_ep *ep, struct jz4740_request *req,
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+ int status);
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+static void pio_irq_enable(struct jz4740_ep *ep);
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+static void pio_irq_disable(struct jz4740_ep *ep);
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+static void stop_activity(struct jz4740_udc *dev,
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+ struct usb_gadget_driver *driver);
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+static void nuke(struct jz4740_ep *ep, int status);
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+static void flush(struct jz4740_ep *ep);
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+static void udc_set_address(struct jz4740_udc *dev, unsigned char address);
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+
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+/*-------------------------------------------------------------------------*/
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+
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+/* inline functions of register read/write/set/clear */
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+
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+static inline uint8_t usb_readb(struct jz4740_udc *udc, size_t reg)
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+{
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+ return readb(udc->base + reg);
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+}
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+
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+static inline uint16_t usb_readw(struct jz4740_udc *udc, size_t reg)
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+{
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+ return readw(udc->base + reg);
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+}
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+
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+static inline uint32_t usb_readl(struct jz4740_udc *udc, size_t reg)
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+{
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+ return readl(udc->base + reg);
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+}
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+
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+static inline void usb_writeb(struct jz4740_udc *udc, size_t reg, uint8_t val)
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+{
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+ writeb(val, udc->base + reg);
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+}
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+
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+static inline void usb_writew(struct jz4740_udc *udc, size_t reg, uint16_t val)
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+{
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+ writew(val, udc->base + reg);
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+}
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+
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+static inline void usb_writel(struct jz4740_udc *udc, size_t reg, uint32_t val)
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+{
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+ writel(val, udc->base + reg);
|
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+}
|
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+
|
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+static inline void usb_setb(struct jz4740_udc *udc, size_t reg, uint8_t mask)
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+{
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+ usb_writeb(udc, reg, usb_readb(udc, reg) | mask);
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+}
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+
|
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+static inline void usb_setw(struct jz4740_udc *udc, size_t reg, uint16_t mask)
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+{
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+ usb_writew(udc, reg, usb_readw(udc, reg) | mask);
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+}
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+
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+static inline void usb_clearb(struct jz4740_udc *udc, size_t reg, uint8_t mask)
|
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+{
|
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+ usb_writeb(udc, reg, usb_readb(udc, reg) & ~mask);
|
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+}
|
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+
|
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+static inline void usb_clearw(struct jz4740_udc *udc, size_t reg, uint16_t mask)
|
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+{
|
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+ usb_writew(udc, reg, usb_readw(udc, reg) & ~mask);
|
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+}
|
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+
|
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+/*-------------------------------------------------------------------------*/
|
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+
|
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+static inline void jz_udc_set_index(struct jz4740_udc *udc, uint8_t index)
|
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+{
|
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+ usb_writeb(udc, JZ_REG_UDC_INDEX, index);
|
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+}
|
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+
|
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+static inline void jz_udc_select_ep(struct jz4740_ep *ep)
|
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+{
|
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+ jz_udc_set_index(ep->dev, ep_index(ep));
|
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+}
|
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+
|
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+static inline int write_packet(struct jz4740_ep *ep,
|
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+ struct jz4740_request *req, unsigned int count)
|
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+{
|
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+ uint8_t *buf;
|
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+ unsigned int length;
|
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+ void __iomem *fifo = ep->dev->base + ep->fifo;
|
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+
|
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+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ buf = req->req.buf + req->req.actual;
|
||
+
|
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+ length = req->req.length - req->req.actual;
|
||
+ if (length > count)
|
||
+ length = count;
|
||
+ req->req.actual += length;
|
||
+
|
||
+ DEBUG("Write %d (count %d), fifo %x\n", length, count, ep->fifo);
|
||
+
|
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+ writesl(fifo, buf, length >> 2);
|
||
+ writesb(fifo, &buf[length - (length & 3)], length & 3);
|
||
+
|
||
+ return length;
|
||
+}
|
||
+
|
||
+static int read_packet(struct jz4740_ep *ep,
|
||
+ struct jz4740_request *req, unsigned int count)
|
||
+{
|
||
+ uint8_t *buf;
|
||
+ unsigned int length;
|
||
+ void __iomem *fifo = ep->dev->base + ep->fifo;
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ buf = req->req.buf + req->req.actual;
|
||
+
|
||
+ length = req->req.length - req->req.actual;
|
||
+ if (length > count)
|
||
+ length = count;
|
||
+ req->req.actual += length;
|
||
+
|
||
+ DEBUG("Read %d, fifo %x\n", length, ep->fifo);
|
||
+
|
||
+ readsl(fifo, buf, length >> 2);
|
||
+ readsb(fifo, &buf[length - (length & 3)], length & 3);
|
||
+
|
||
+ return length;
|
||
+}
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+/*
|
||
+ * udc_disable - disable USB device controller
|
||
+ */
|
||
+static void udc_disable(struct jz4740_udc *dev)
|
||
+{
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ udc_set_address(dev, 0);
|
||
+
|
||
+ /* Disable interrupts */
|
||
+ usb_writew(dev, JZ_REG_UDC_INTRINE, 0);
|
||
+ usb_writew(dev, JZ_REG_UDC_INTROUTE, 0);
|
||
+ usb_writeb(dev, JZ_REG_UDC_INTRUSBE, 0);
|
||
+
|
||
+ /* Disable DMA */
|
||
+ usb_writel(dev, JZ_REG_UDC_CNTL1, 0);
|
||
+ usb_writel(dev, JZ_REG_UDC_CNTL2, 0);
|
||
+
|
||
+ /* Disconnect from usb */
|
||
+ usb_clearb(dev, JZ_REG_UDC_POWER, USB_POWER_SOFTCONN);
|
||
+
|
||
+ /* Disable the USB PHY */
|
||
+ clk_disable(dev->clk);
|
||
+
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
|
||
+
|
||
+ return;
|
||
+}
|
||
+
|
||
+/*
|
||
+ * udc_reinit - initialize software state
|
||
+ */
|
||
+static void udc_reinit(struct jz4740_udc *dev)
|
||
+{
|
||
+ int i;
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ /* device/ep0 records init */
|
||
+ INIT_LIST_HEAD(&dev->gadget.ep_list);
|
||
+ INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+
|
||
+ for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
|
||
+ struct jz4740_ep *ep = &dev->ep[i];
|
||
+
|
||
+ if (i != 0)
|
||
+ list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
|
||
+
|
||
+ INIT_LIST_HEAD(&ep->queue);
|
||
+ ep->desc = 0;
|
||
+ ep->stopped = 0;
|
||
+ }
|
||
+}
|
||
+
|
||
+/* until it's enabled, this UDC should be completely invisible
|
||
+ * to any USB host.
|
||
+ */
|
||
+static void udc_enable(struct jz4740_udc *dev)
|
||
+{
|
||
+ int i;
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ /* UDC state is incorrect - Added by River */
|
||
+ if (dev->state != UDC_STATE_ENABLE) {
|
||
+ return;
|
||
+ }
|
||
+
|
||
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
|
||
+
|
||
+ /* Flush FIFO for each */
|
||
+ for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
|
||
+ struct jz4740_ep *ep = &dev->ep[i];
|
||
+
|
||
+ jz_udc_select_ep(ep);
|
||
+ flush(ep);
|
||
+ }
|
||
+
|
||
+ /* Set this bit to allow the UDC entering low-power mode when
|
||
+ * there are no actions on the USB bus.
|
||
+ * UDC still works during this bit was set.
|
||
+ */
|
||
+ jz4740_clock_udc_enable_auto_suspend();
|
||
+
|
||
+ /* Enable the USB PHY */
|
||
+ clk_enable(dev->clk);
|
||
+
|
||
+ /* Disable interrupts */
|
||
+/* usb_writew(dev, JZ_REG_UDC_INTRINE, 0);
|
||
+ usb_writew(dev, JZ_REG_UDC_INTROUTE, 0);
|
||
+ usb_writeb(dev, JZ_REG_UDC_INTRUSBE, 0);*/
|
||
+
|
||
+ /* Enable interrupts */
|
||
+ usb_setw(dev, JZ_REG_UDC_INTRINE, USB_INTR_EP0);
|
||
+ usb_setb(dev, JZ_REG_UDC_INTRUSBE, USB_INTR_RESET);
|
||
+ /* Don't enable rest of the interrupts */
|
||
+ /* usb_setw(dev, JZ_REG_UDC_INTRINE, USB_INTR_INEP1 | USB_INTR_INEP2);
|
||
+ usb_setw(dev, JZ_REG_UDC_INTROUTE, USB_INTR_OUTEP1); */
|
||
+
|
||
+ /* Enable SUSPEND */
|
||
+ /* usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_SUSPENDM); */
|
||
+
|
||
+ /* Enable HS Mode */
|
||
+ usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_HSENAB);
|
||
+
|
||
+ /* Let host detect UDC:
|
||
+ * Software must write a 1 to the PMR:USB_POWER_SOFTCONN bit to turn this
|
||
+ * transistor on and pull the USBDP pin HIGH.
|
||
+ */
|
||
+ usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_SOFTCONN);
|
||
+
|
||
+ return;
|
||
+}
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+/* keeping it simple:
|
||
+ * - one bus driver, initted first;
|
||
+ * - one function driver, initted second
|
||
+ */
|
||
+
|
||
+/*
|
||
+ * Register entry point for the peripheral controller driver.
|
||
+ */
|
||
+
|
||
+static int jz4740_udc_start(struct usb_gadget_driver *driver,
|
||
+ int (*bind)(struct usb_gadget *))
|
||
+{
|
||
+ struct jz4740_udc *dev = &jz4740_udc_controller;
|
||
+ int retval;
|
||
+
|
||
+ if (!driver || !bind)
|
||
+ return -EINVAL;
|
||
+
|
||
+ if (!dev)
|
||
+ return -ENODEV;
|
||
+
|
||
+ if (dev->driver)
|
||
+ return -EBUSY;
|
||
+
|
||
+ /* hook up the driver */
|
||
+ dev->driver = driver;
|
||
+ dev->gadget.dev.driver = &driver->driver;
|
||
+
|
||
+ retval = bind(&dev->gadget);
|
||
+ if (retval) {
|
||
+ DEBUG("%s: bind to driver %s --> error %d\n", dev->gadget.name,
|
||
+ driver->driver.name, retval);
|
||
+ dev->driver = 0;
|
||
+ return retval;
|
||
+ }
|
||
+
|
||
+ /* then enable host detection and ep0; and we're ready
|
||
+ * for set_configuration as well as eventual disconnect.
|
||
+ */
|
||
+ udc_enable(dev);
|
||
+
|
||
+ DEBUG("%s: registered gadget driver '%s'\n", dev->gadget.name,
|
||
+ driver->driver.name);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+static void stop_activity(struct jz4740_udc *dev,
|
||
+ struct usb_gadget_driver *driver)
|
||
+{
|
||
+ int i;
|
||
+
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ /* don't disconnect drivers more than once */
|
||
+ if (dev->gadget.speed == USB_SPEED_UNKNOWN)
|
||
+ driver = 0;
|
||
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
|
||
+
|
||
+ /* prevent new request submissions, kill any outstanding requests */
|
||
+ for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
|
||
+ struct jz4740_ep *ep = &dev->ep[i];
|
||
+
|
||
+ ep->stopped = 1;
|
||
+
|
||
+ jz_udc_select_ep(ep);
|
||
+ nuke(ep, -ESHUTDOWN);
|
||
+ }
|
||
+
|
||
+ /* report disconnect; the driver is already quiesced */
|
||
+ if (driver) {
|
||
+ spin_unlock(&dev->lock);
|
||
+ driver->disconnect(&dev->gadget);
|
||
+ spin_lock(&dev->lock);
|
||
+ }
|
||
+
|
||
+ /* re-init driver-visible data structures */
|
||
+ udc_reinit(dev);
|
||
+}
|
||
+
|
||
+
|
||
+/*
|
||
+ * Unregister entry point for the peripheral controller driver.
|
||
+ */
|
||
+static int jz4740_udc_stop(struct usb_gadget_driver *driver)
|
||
+{
|
||
+ struct jz4740_udc *dev = &jz4740_udc_controller;
|
||
+ unsigned long flags;
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ if (!dev)
|
||
+ return -ENODEV;
|
||
+ if (!driver || driver != dev->driver)
|
||
+ return -EINVAL;
|
||
+ if (!driver->unbind)
|
||
+ return -EBUSY;
|
||
+
|
||
+ spin_lock_irqsave(&dev->lock, flags);
|
||
+ dev->driver = 0;
|
||
+ stop_activity(dev, driver);
|
||
+ spin_unlock_irqrestore(&dev->lock, flags);
|
||
+
|
||
+ driver->unbind(&dev->gadget);
|
||
+
|
||
+ udc_disable(dev);
|
||
+
|
||
+ DEBUG("unregistered driver '%s'\n", driver->driver.name);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+/** Write request to FIFO (max write == maxp size)
|
||
+ * Return: 0 = still running, 1 = completed, negative = errno
|
||
+ * NOTE: INDEX register must be set for EP
|
||
+ */
|
||
+static int write_fifo(struct jz4740_ep *ep, struct jz4740_request *req)
|
||
+{
|
||
+ struct jz4740_udc *dev = ep->dev;
|
||
+ uint32_t max, csr;
|
||
+
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+ max = le16_to_cpu(ep->desc->wMaxPacketSize);
|
||
+
|
||
+ csr = usb_readb(dev, ep->csr);
|
||
+
|
||
+ if (!(csr & USB_INCSR_FFNOTEMPT)) {
|
||
+ unsigned count;
|
||
+ int is_last, is_short;
|
||
+
|
||
+ count = write_packet(ep, req, max);
|
||
+ usb_setb(dev, ep->csr, USB_INCSR_INPKTRDY);
|
||
+
|
||
+ /* last packet is usually short (or a zlp) */
|
||
+ if (unlikely(count != max))
|
||
+ is_last = is_short = 1;
|
||
+ else {
|
||
+ if (likely(req->req.length != req->req.actual)
|
||
+ || req->req.zero)
|
||
+ is_last = 0;
|
||
+ else
|
||
+ is_last = 1;
|
||
+ /* interrupt/iso maxpacket may not fill the fifo */
|
||
+ is_short = unlikely(max < ep_maxpacket(ep));
|
||
+ }
|
||
+
|
||
+ DEBUG("%s: wrote %s %d bytes%s%s %d left %p\n", __FUNCTION__,
|
||
+ ep->ep.name, count,
|
||
+ is_last ? "/L" : "", is_short ? "/S" : "",
|
||
+ req->req.length - req->req.actual, req);
|
||
+
|
||
+ /* requests complete when all IN data is in the FIFO */
|
||
+ if (is_last) {
|
||
+ done(ep, req, 0);
|
||
+ if (list_empty(&ep->queue)) {
|
||
+ pio_irq_disable(ep);
|
||
+ }
|
||
+ return 1;
|
||
+ }
|
||
+ } else {
|
||
+ DEBUG("Hmm.. %d ep FIFO is not empty!\n", ep_index(ep));
|
||
+ }
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/** Read to request from FIFO (max read == bytes in fifo)
|
||
+ * Return: 0 = still running, 1 = completed, negative = errno
|
||
+ * NOTE: INDEX register must be set for EP
|
||
+ */
|
||
+static int read_fifo(struct jz4740_ep *ep, struct jz4740_request *req)
|
||
+{
|
||
+ struct jz4740_udc *dev = ep->dev;
|
||
+ uint32_t csr;
|
||
+ unsigned count, is_short;
|
||
+
|
||
+ /* make sure there's a packet in the FIFO. */
|
||
+ csr = usb_readb(dev, ep->csr);
|
||
+ if (!(csr & USB_OUTCSR_OUTPKTRDY)) {
|
||
+ DEBUG("%s: Packet NOT ready!\n", __FUNCTION__);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+
|
||
+ /* read all bytes from this packet */
|
||
+ count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT);
|
||
+
|
||
+ is_short = (count < ep->ep.maxpacket);
|
||
+
|
||
+ count = read_packet(ep, req, count);
|
||
+
|
||
+ DEBUG("read %s %02x, %d bytes%s req %p %d/%d\n",
|
||
+ ep->ep.name, csr, count,
|
||
+ is_short ? "/S" : "", req, req->req.actual, req->req.length);
|
||
+
|
||
+ /* Clear OutPktRdy */
|
||
+ usb_clearb(dev, ep->csr, USB_OUTCSR_OUTPKTRDY);
|
||
+
|
||
+ /* completion */
|
||
+ if (is_short || req->req.actual == req->req.length) {
|
||
+ done(ep, req, 0);
|
||
+
|
||
+ if (list_empty(&ep->queue))
|
||
+ pio_irq_disable(ep);
|
||
+ return 1;
|
||
+ }
|
||
+
|
||
+ /* finished that packet. the next one may be waiting... */
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/*
|
||
+ * done - retire a request; caller blocked irqs
|
||
+ * INDEX register is preserved to keep same
|
||
+ */
|
||
+static void done(struct jz4740_ep *ep, struct jz4740_request *req, int status)
|
||
+{
|
||
+ unsigned int stopped = ep->stopped;
|
||
+ uint32_t index;
|
||
+
|
||
+ DEBUG("%s, %p\n", __FUNCTION__, ep);
|
||
+ list_del_init(&req->queue);
|
||
+
|
||
+ if (likely(req->req.status == -EINPROGRESS))
|
||
+ req->req.status = status;
|
||
+ else
|
||
+ status = req->req.status;
|
||
+
|
||
+ if (status && status != -ESHUTDOWN)
|
||
+ DEBUG("complete %s req %p stat %d len %u/%u\n",
|
||
+ ep->ep.name, &req->req, status,
|
||
+ req->req.actual, req->req.length);
|
||
+
|
||
+ /* don't modify queue heads during completion callback */
|
||
+ ep->stopped = 1;
|
||
+ /* Read current index (completion may modify it) */
|
||
+ index = usb_readb(ep->dev, JZ_REG_UDC_INDEX);
|
||
+ spin_unlock_irqrestore(&ep->dev->lock, ep->dev->lock_flags);
|
||
+
|
||
+ req->req.complete(&ep->ep, &req->req);
|
||
+
|
||
+ spin_lock_irqsave(&ep->dev->lock, ep->dev->lock_flags);
|
||
+ /* Restore index */
|
||
+ jz_udc_set_index(ep->dev, index);
|
||
+ ep->stopped = stopped;
|
||
+}
|
||
+
|
||
+static inline unsigned int jz4740_udc_ep_irq_enable_reg(struct jz4740_ep *ep)
|
||
+{
|
||
+ if (ep_is_in(ep))
|
||
+ return JZ_REG_UDC_INTRINE;
|
||
+ else
|
||
+ return JZ_REG_UDC_INTROUTE;
|
||
+}
|
||
+
|
||
+/** Enable EP interrupt */
|
||
+static void pio_irq_enable(struct jz4740_ep *ep)
|
||
+{
|
||
+ DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT");
|
||
+
|
||
+ usb_setw(ep->dev, jz4740_udc_ep_irq_enable_reg(ep), BIT(ep_index(ep)));
|
||
+}
|
||
+
|
||
+/** Disable EP interrupt */
|
||
+static void pio_irq_disable(struct jz4740_ep *ep)
|
||
+{
|
||
+ DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT");
|
||
+
|
||
+ usb_clearw(ep->dev, jz4740_udc_ep_irq_enable_reg(ep), BIT(ep_index(ep)));
|
||
+}
|
||
+
|
||
+/*
|
||
+ * nuke - dequeue ALL requests
|
||
+ */
|
||
+static void nuke(struct jz4740_ep *ep, int status)
|
||
+{
|
||
+ struct jz4740_request *req;
|
||
+
|
||
+ DEBUG("%s, %p\n", __FUNCTION__, ep);
|
||
+
|
||
+ /* Flush FIFO */
|
||
+ flush(ep);
|
||
+
|
||
+ /* called with irqs blocked */
|
||
+ while (!list_empty(&ep->queue)) {
|
||
+ req = list_entry(ep->queue.next, struct jz4740_request, queue);
|
||
+ done(ep, req, status);
|
||
+ }
|
||
+
|
||
+ /* Disable IRQ if EP is enabled (has descriptor) */
|
||
+ if (ep->desc)
|
||
+ pio_irq_disable(ep);
|
||
+}
|
||
+
|
||
+/** Flush EP FIFO
|
||
+ * NOTE: INDEX register must be set before this call
|
||
+ */
|
||
+static void flush(struct jz4740_ep *ep)
|
||
+{
|
||
+ DEBUG("%s: %s\n", __FUNCTION__, ep->ep.name);
|
||
+
|
||
+ switch (ep->type) {
|
||
+ case ep_bulk_in:
|
||
+ case ep_interrupt:
|
||
+ usb_setb(ep->dev, ep->csr, USB_INCSR_FF);
|
||
+ break;
|
||
+ case ep_bulk_out:
|
||
+ usb_setb(ep->dev, ep->csr, USB_OUTCSR_FF);
|
||
+ break;
|
||
+ case ep_control:
|
||
+ break;
|
||
+ }
|
||
+}
|
||
+
|
||
+/**
|
||
+ * jz4740_in_epn - handle IN interrupt
|
||
+ */
|
||
+static void jz4740_in_epn(struct jz4740_udc *dev, uint32_t ep_idx, uint32_t intr)
|
||
+{
|
||
+ uint32_t csr;
|
||
+ struct jz4740_ep *ep = &dev->ep[ep_idx + 1];
|
||
+ struct jz4740_request *req;
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ jz_udc_select_ep(ep);
|
||
+
|
||
+ csr = usb_readb(dev, ep->csr);
|
||
+ DEBUG("%s: %d, csr %x\n", __FUNCTION__, ep_idx, csr);
|
||
+
|
||
+ if (csr & USB_INCSR_SENTSTALL) {
|
||
+ DEBUG("USB_INCSR_SENTSTALL\n");
|
||
+ usb_clearb(dev, ep->csr, USB_INCSR_SENTSTALL);
|
||
+ return;
|
||
+ }
|
||
+
|
||
+ if (!ep->desc) {
|
||
+ DEBUG("%s: NO EP DESC\n", __FUNCTION__);
|
||
+ return;
|
||
+ }
|
||
+
|
||
+ if (!list_empty(&ep->queue)) {
|
||
+ req = list_first_entry(&ep->queue, struct jz4740_request, queue);
|
||
+ write_fifo(ep, req);
|
||
+ }
|
||
+}
|
||
+
|
||
+/*
|
||
+ * Bulk OUT (recv)
|
||
+ */
|
||
+static void jz4740_out_epn(struct jz4740_udc *dev, uint32_t ep_idx, uint32_t intr)
|
||
+{
|
||
+ struct jz4740_ep *ep = &dev->ep[ep_idx];
|
||
+ struct jz4740_request *req;
|
||
+
|
||
+ DEBUG("%s: %d\n", __FUNCTION__, ep_idx);
|
||
+
|
||
+ jz_udc_select_ep(ep);
|
||
+ if (ep->desc) {
|
||
+ uint32_t csr;
|
||
+
|
||
+ while ((csr = usb_readb(dev, ep->csr)) &
|
||
+ (USB_OUTCSR_OUTPKTRDY | USB_OUTCSR_SENTSTALL)) {
|
||
+ DEBUG("%s: %x\n", __FUNCTION__, csr);
|
||
+
|
||
+ if (csr & USB_OUTCSR_SENTSTALL) {
|
||
+ DEBUG("%s: stall sent, flush fifo\n",
|
||
+ __FUNCTION__);
|
||
+ /* usb_set(USB_OUT_CSR1_FIFO_FLUSH, ep->csr1); */
|
||
+ flush(ep);
|
||
+ } else if (csr & USB_OUTCSR_OUTPKTRDY) {
|
||
+ if (list_empty(&ep->queue))
|
||
+ req = 0;
|
||
+ else
|
||
+ req =
|
||
+ list_entry(ep->queue.next,
|
||
+ struct jz4740_request,
|
||
+ queue);
|
||
+
|
||
+ if (!req) {
|
||
+ DEBUG("%s: NULL REQ %d\n",
|
||
+ __FUNCTION__, ep_idx);
|
||
+ break;
|
||
+ } else {
|
||
+ read_fifo(ep, req);
|
||
+ }
|
||
+ }
|
||
+ }
|
||
+ } else {
|
||
+ /* Throw packet away.. */
|
||
+ DEBUG("%s: ep %p ep_indx %d No descriptor?!?\n", __FUNCTION__, ep, ep_idx);
|
||
+ flush(ep);
|
||
+ }
|
||
+}
|
||
+
|
||
+/** Halt specific EP
|
||
+ * Return 0 if success
|
||
+ * NOTE: Sets INDEX register to EP !
|
||
+ */
|
||
+static int jz4740_set_halt(struct usb_ep *_ep, int value)
|
||
+{
|
||
+ struct jz4740_udc *dev;
|
||
+ struct jz4740_ep *ep;
|
||
+ unsigned long flags;
|
||
+
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ ep = container_of(_ep, struct jz4740_ep, ep);
|
||
+ if (unlikely(!_ep || (!ep->desc && ep->type != ep_control))) {
|
||
+ DEBUG("%s, bad ep\n", __FUNCTION__);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+
|
||
+ dev = ep->dev;
|
||
+
|
||
+ spin_lock_irqsave(&dev->lock, flags);
|
||
+
|
||
+ jz_udc_select_ep(ep);
|
||
+
|
||
+ DEBUG("%s, ep %d, val %d\n", __FUNCTION__, ep_index(ep), value);
|
||
+
|
||
+ if (ep_index(ep) == 0) {
|
||
+ /* EP0 */
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SENDSTALL);
|
||
+ } else if (ep_is_in(ep)) {
|
||
+ uint32_t csr = usb_readb(dev, ep->csr);
|
||
+ if (value && ((csr & USB_INCSR_FFNOTEMPT)
|
||
+ || !list_empty(&ep->queue))) {
|
||
+ /*
|
||
+ * Attempts to halt IN endpoints will fail (returning -EAGAIN)
|
||
+ * if any transfer requests are still queued, or if the controller
|
||
+ * FIFO still holds bytes that the host hasnt collected.
|
||
+ */
|
||
+ spin_unlock_irqrestore(&dev->lock, flags);
|
||
+ DEBUG
|
||
+ ("Attempt to halt IN endpoint failed (returning -EAGAIN) %d %d\n",
|
||
+ (csr & USB_INCSR_FFNOTEMPT),
|
||
+ !list_empty(&ep->queue));
|
||
+ return -EAGAIN;
|
||
+ }
|
||
+ flush(ep);
|
||
+ if (value) {
|
||
+ usb_setb(dev, ep->csr, USB_INCSR_SENDSTALL);
|
||
+ } else {
|
||
+ usb_clearb(dev, ep->csr, USB_INCSR_SENDSTALL);
|
||
+ usb_setb(dev, ep->csr, USB_INCSR_CDT);
|
||
+ }
|
||
+ } else {
|
||
+
|
||
+ flush(ep);
|
||
+ if (value) {
|
||
+ usb_setb(dev, ep->csr, USB_OUTCSR_SENDSTALL);
|
||
+ } else {
|
||
+ usb_clearb(dev, ep->csr, USB_OUTCSR_SENDSTALL);
|
||
+ usb_setb(dev, ep->csr, USB_OUTCSR_CDT);
|
||
+ }
|
||
+ }
|
||
+
|
||
+ ep->stopped = value;
|
||
+
|
||
+ spin_unlock_irqrestore(&dev->lock, flags);
|
||
+
|
||
+ DEBUG("%s %s halted\n", _ep->name, value == 0 ? "NOT" : "IS");
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+
|
||
+static int jz4740_ep_enable(struct usb_ep *_ep,
|
||
+ const struct usb_endpoint_descriptor *desc)
|
||
+{
|
||
+ struct jz4740_ep *ep;
|
||
+ struct jz4740_udc *dev;
|
||
+ unsigned long flags;
|
||
+ uint32_t max, csrh = 0;
|
||
+
|
||
+ DEBUG("%s: trying to enable %s\n", __FUNCTION__, _ep->name);
|
||
+
|
||
+ if (!_ep || !desc)
|
||
+ return -EINVAL;
|
||
+
|
||
+ ep = container_of(_ep, struct jz4740_ep, ep);
|
||
+ if (ep->desc || ep->type == ep_control
|
||
+ || desc->bDescriptorType != USB_DT_ENDPOINT
|
||
+ || ep->bEndpointAddress != desc->bEndpointAddress) {
|
||
+ DEBUG("%s, bad ep or descriptor\n", __FUNCTION__);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+
|
||
+ /* xfer types must match, except that interrupt ~= bulk */
|
||
+ if (ep->bmAttributes != desc->bmAttributes
|
||
+ && ep->bmAttributes != USB_ENDPOINT_XFER_BULK
|
||
+ && desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
|
||
+ DEBUG("%s, %s type mismatch\n", __FUNCTION__, _ep->name);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+
|
||
+ dev = ep->dev;
|
||
+ if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
|
||
+ DEBUG("%s, bogus device state\n", __FUNCTION__);
|
||
+ return -ESHUTDOWN;
|
||
+ }
|
||
+
|
||
+ max = le16_to_cpu(desc->wMaxPacketSize);
|
||
+
|
||
+ spin_lock_irqsave(&ep->dev->lock, flags);
|
||
+
|
||
+ /* Configure the endpoint */
|
||
+ jz_udc_select_ep(ep);
|
||
+ if (ep_is_in(ep)) {
|
||
+ usb_writew(dev, JZ_REG_UDC_INMAXP, max);
|
||
+ switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
|
||
+ case USB_ENDPOINT_XFER_BULK:
|
||
+ case USB_ENDPOINT_XFER_INT:
|
||
+ csrh &= ~USB_INCSRH_ISO;
|
||
+ break;
|
||
+ case USB_ENDPOINT_XFER_ISOC:
|
||
+ csrh |= USB_INCSRH_ISO;
|
||
+ break;
|
||
+ }
|
||
+ usb_writeb(dev, JZ_REG_UDC_INCSRH, csrh);
|
||
+ }
|
||
+ else {
|
||
+ usb_writew(dev, JZ_REG_UDC_OUTMAXP, max);
|
||
+ switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
|
||
+ case USB_ENDPOINT_XFER_BULK:
|
||
+ csrh &= ~USB_OUTCSRH_ISO;
|
||
+ break;
|
||
+ case USB_ENDPOINT_XFER_INT:
|
||
+ csrh &= ~USB_OUTCSRH_ISO;
|
||
+ csrh |= USB_OUTCSRH_DNYT;
|
||
+ break;
|
||
+ case USB_ENDPOINT_XFER_ISOC:
|
||
+ csrh |= USB_OUTCSRH_ISO;
|
||
+ break;
|
||
+ }
|
||
+ usb_writeb(dev, JZ_REG_UDC_OUTCSRH, csrh);
|
||
+ }
|
||
+
|
||
+
|
||
+ ep->stopped = 0;
|
||
+ ep->desc = desc;
|
||
+ ep->ep.maxpacket = max;
|
||
+
|
||
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
|
||
+
|
||
+ /* Reset halt state (does flush) */
|
||
+ jz4740_set_halt(_ep, 0);
|
||
+
|
||
+ DEBUG("%s: enabled %s\n", __FUNCTION__, _ep->name);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/** Disable EP
|
||
+ * NOTE: Sets INDEX register
|
||
+ */
|
||
+static int jz4740_ep_disable(struct usb_ep *_ep)
|
||
+{
|
||
+ struct jz4740_ep *ep;
|
||
+ unsigned long flags;
|
||
+
|
||
+ DEBUG("%s, %p\n", __FUNCTION__, _ep);
|
||
+
|
||
+ ep = container_of(_ep, struct jz4740_ep, ep);
|
||
+ if (!_ep || !ep->desc) {
|
||
+ DEBUG("%s, %s not enabled\n", __FUNCTION__,
|
||
+ _ep ? ep->ep.name : NULL);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+
|
||
+ spin_lock_irqsave(&ep->dev->lock, flags);
|
||
+
|
||
+ jz_udc_select_ep(ep);
|
||
+
|
||
+ /* Nuke all pending requests (does flush) */
|
||
+ nuke(ep, -ESHUTDOWN);
|
||
+
|
||
+ /* Disable ep IRQ */
|
||
+ pio_irq_disable(ep);
|
||
+
|
||
+ ep->desc = 0;
|
||
+ ep->stopped = 1;
|
||
+
|
||
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
|
||
+
|
||
+ DEBUG("%s: disabled %s\n", __FUNCTION__, _ep->name);
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+static struct usb_request *jz4740_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
|
||
+{
|
||
+ struct jz4740_request *req;
|
||
+
|
||
+ req = kzalloc(sizeof(*req), gfp_flags);
|
||
+ if (!req)
|
||
+ return NULL;
|
||
+
|
||
+ INIT_LIST_HEAD(&req->queue);
|
||
+
|
||
+ return &req->req;
|
||
+}
|
||
+
|
||
+static void jz4740_free_request(struct usb_ep *ep, struct usb_request *_req)
|
||
+{
|
||
+ struct jz4740_request *req;
|
||
+
|
||
+ req = container_of(_req, struct jz4740_request, req);
|
||
+ WARN_ON(!list_empty(&req->queue));
|
||
+
|
||
+ kfree(req);
|
||
+}
|
||
+
|
||
+/*--------------------------------------------------------------------*/
|
||
+
|
||
+/** Queue one request
|
||
+ * Kickstart transfer if needed
|
||
+ * NOTE: Sets INDEX register
|
||
+ */
|
||
+static int jz4740_queue(struct usb_ep *_ep, struct usb_request *_req,
|
||
+ gfp_t gfp_flags)
|
||
+{
|
||
+ struct jz4740_request *req;
|
||
+ struct jz4740_ep *ep;
|
||
+ struct jz4740_udc *dev;
|
||
+
|
||
+ DEBUG("%s, %p\n", __FUNCTION__, _ep);
|
||
+
|
||
+ req = container_of(_req, struct jz4740_request, req);
|
||
+ if (unlikely
|
||
+ (!_req || !_req->complete || !_req->buf
|
||
+ || !list_empty(&req->queue))) {
|
||
+ DEBUG("%s, bad params\n", __FUNCTION__);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+
|
||
+ ep = container_of(_ep, struct jz4740_ep, ep);
|
||
+ if (unlikely(!_ep || (!ep->desc && ep->type != ep_control))) {
|
||
+ DEBUG("%s, bad ep\n", __FUNCTION__);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+
|
||
+ dev = ep->dev;
|
||
+ if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) {
|
||
+ DEBUG("%s, bogus device state %p\n", __FUNCTION__, dev->driver);
|
||
+ return -ESHUTDOWN;
|
||
+ }
|
||
+
|
||
+ DEBUG("%s queue req %p, len %d buf %p\n", _ep->name, _req, _req->length,
|
||
+ _req->buf);
|
||
+
|
||
+ spin_lock_irqsave(&dev->lock, dev->lock_flags);
|
||
+
|
||
+ _req->status = -EINPROGRESS;
|
||
+ _req->actual = 0;
|
||
+
|
||
+ /* kickstart this i/o queue? */
|
||
+ DEBUG("Add to %d Q %d %d\n", ep_index(ep), list_empty(&ep->queue),
|
||
+ ep->stopped);
|
||
+ if (list_empty(&ep->queue) && likely(!ep->stopped)) {
|
||
+ uint32_t csr;
|
||
+
|
||
+ if (unlikely(ep_index(ep) == 0)) {
|
||
+ /* EP0 */
|
||
+ list_add_tail(&req->queue, &ep->queue);
|
||
+ jz4740_ep0_kick(dev, ep);
|
||
+ req = 0;
|
||
+ }
|
||
+ else if (ep_is_in(ep)) {
|
||
+ /* EP1 & EP2 */
|
||
+ jz_udc_select_ep(ep);
|
||
+ csr = usb_readb(dev, ep->csr);
|
||
+ pio_irq_enable(ep);
|
||
+ if (!(csr & USB_INCSR_FFNOTEMPT)) {
|
||
+ if (write_fifo(ep, req) == 1)
|
||
+ req = 0;
|
||
+ }
|
||
+ } else {
|
||
+ /* EP1 */
|
||
+ jz_udc_select_ep(ep);
|
||
+ csr = usb_readb(dev, ep->csr);
|
||
+ pio_irq_enable(ep);
|
||
+ if (csr & USB_OUTCSR_OUTPKTRDY) {
|
||
+ if (read_fifo(ep, req) == 1)
|
||
+ req = 0;
|
||
+ }
|
||
+ }
|
||
+ }
|
||
+
|
||
+ /* pio or dma irq handler advances the queue. */
|
||
+ if (likely(req != 0))
|
||
+ list_add_tail(&req->queue, &ep->queue);
|
||
+
|
||
+ spin_unlock_irqrestore(&dev->lock, dev->lock_flags);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/* dequeue JUST ONE request */
|
||
+static int jz4740_dequeue(struct usb_ep *_ep, struct usb_request *_req)
|
||
+{
|
||
+ struct jz4740_ep *ep;
|
||
+ struct jz4740_request *req;
|
||
+ unsigned long flags;
|
||
+
|
||
+ DEBUG("%s, %p\n", __FUNCTION__, _ep);
|
||
+
|
||
+ ep = container_of(_ep, struct jz4740_ep, ep);
|
||
+ if (!_ep || ep->type == ep_control)
|
||
+ return -EINVAL;
|
||
+
|
||
+ spin_lock_irqsave(&ep->dev->lock, flags);
|
||
+
|
||
+ /* make sure it's actually queued on this endpoint */
|
||
+ list_for_each_entry(req, &ep->queue, queue) {
|
||
+ if (&req->req == _req)
|
||
+ break;
|
||
+ }
|
||
+ if (&req->req != _req) {
|
||
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
|
||
+ return -EINVAL;
|
||
+ }
|
||
+ done(ep, req, -ECONNRESET);
|
||
+
|
||
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/** Return bytes in EP FIFO
|
||
+ * NOTE: Sets INDEX register to EP
|
||
+ */
|
||
+static int jz4740_fifo_status(struct usb_ep *_ep)
|
||
+{
|
||
+ uint32_t csr;
|
||
+ int count = 0;
|
||
+ struct jz4740_ep *ep;
|
||
+ unsigned long flags;
|
||
+
|
||
+ ep = container_of(_ep, struct jz4740_ep, ep);
|
||
+ if (!_ep) {
|
||
+ DEBUG("%s, bad ep\n", __FUNCTION__);
|
||
+ return -ENODEV;
|
||
+ }
|
||
+
|
||
+ DEBUG("%s, %d\n", __FUNCTION__, ep_index(ep));
|
||
+
|
||
+ /* LPD can't report unclaimed bytes from IN fifos */
|
||
+ if (ep_is_in(ep))
|
||
+ return -EOPNOTSUPP;
|
||
+
|
||
+ spin_lock_irqsave(&ep->dev->lock, flags);
|
||
+ jz_udc_select_ep(ep);
|
||
+
|
||
+ csr = usb_readb(ep->dev, ep->csr);
|
||
+ if (ep->dev->gadget.speed != USB_SPEED_UNKNOWN ||
|
||
+ csr & 0x1) {
|
||
+ count = usb_readw(ep->dev, JZ_REG_UDC_OUTCOUNT);
|
||
+ }
|
||
+
|
||
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
|
||
+
|
||
+ return count;
|
||
+}
|
||
+
|
||
+/** Flush EP FIFO
|
||
+ * NOTE: Sets INDEX register to EP
|
||
+ */
|
||
+static void jz4740_fifo_flush(struct usb_ep *_ep)
|
||
+{
|
||
+ struct jz4740_ep *ep;
|
||
+ unsigned long flags;
|
||
+
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ ep = container_of(_ep, struct jz4740_ep, ep);
|
||
+ if (unlikely(!_ep || (!ep->desc && ep->type == ep_control))) {
|
||
+ DEBUG("%s, bad ep\n", __FUNCTION__);
|
||
+ return;
|
||
+ }
|
||
+
|
||
+ spin_lock_irqsave(&ep->dev->lock, flags);
|
||
+
|
||
+ jz_udc_select_ep(ep);
|
||
+ flush(ep);
|
||
+
|
||
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
|
||
+}
|
||
+
|
||
+/****************************************************************/
|
||
+/* End Point 0 related functions */
|
||
+/****************************************************************/
|
||
+
|
||
+/* return: 0 = still running, 1 = completed, negative = errno */
|
||
+static int write_fifo_ep0(struct jz4740_ep *ep, struct jz4740_request *req)
|
||
+{
|
||
+ uint32_t max;
|
||
+ unsigned count;
|
||
+ int is_last;
|
||
+
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+ max = ep_maxpacket(ep);
|
||
+
|
||
+ count = write_packet(ep, req, max);
|
||
+
|
||
+ /* last packet is usually short (or a zlp) */
|
||
+ if (unlikely(count != max))
|
||
+ is_last = 1;
|
||
+ else {
|
||
+ if (likely(req->req.length != req->req.actual) || req->req.zero)
|
||
+ is_last = 0;
|
||
+ else
|
||
+ is_last = 1;
|
||
+ }
|
||
+
|
||
+ DEBUG_EP0("%s: wrote %s %d bytes%s %d left %p\n", __FUNCTION__,
|
||
+ ep->ep.name, count,
|
||
+ is_last ? "/L" : "", req->req.length - req->req.actual, req);
|
||
+
|
||
+ /* requests complete when all IN data is in the FIFO */
|
||
+ if (is_last) {
|
||
+ done(ep, req, 0);
|
||
+ return 1;
|
||
+ }
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+static inline int jz4740_fifo_read(struct jz4740_ep *ep,
|
||
+ unsigned char *cp, int max)
|
||
+{
|
||
+ int bytes;
|
||
+ int count = usb_readw(ep->dev, JZ_REG_UDC_OUTCOUNT);
|
||
+
|
||
+ if (count > max)
|
||
+ count = max;
|
||
+ bytes = count;
|
||
+ while (count--)
|
||
+ *cp++ = usb_readb(ep->dev, ep->fifo);
|
||
+
|
||
+ return bytes;
|
||
+}
|
||
+
|
||
+static inline void jz4740_fifo_write(struct jz4740_ep *ep,
|
||
+ unsigned char *cp, int count)
|
||
+{
|
||
+ DEBUG("fifo_write: %d %d\n", ep_index(ep), count);
|
||
+ while (count--)
|
||
+ usb_writeb(ep->dev, ep->fifo, *cp++);
|
||
+}
|
||
+
|
||
+static int read_fifo_ep0(struct jz4740_ep *ep, struct jz4740_request *req)
|
||
+{
|
||
+ struct jz4740_udc *dev = ep->dev;
|
||
+ uint32_t csr;
|
||
+ uint8_t *buf;
|
||
+ unsigned bufferspace, count, is_short;
|
||
+
|
||
+ DEBUG_EP0("%s\n", __FUNCTION__);
|
||
+
|
||
+ csr = usb_readb(dev, JZ_REG_UDC_CSR0);
|
||
+ if (!(csr & USB_CSR0_OUTPKTRDY))
|
||
+ return 0;
|
||
+
|
||
+ buf = req->req.buf + req->req.actual;
|
||
+ prefetchw(buf);
|
||
+ bufferspace = req->req.length - req->req.actual;
|
||
+
|
||
+ /* read all bytes from this packet */
|
||
+ if (likely(csr & USB_CSR0_OUTPKTRDY)) {
|
||
+ count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT);
|
||
+ req->req.actual += min(count, bufferspace);
|
||
+ } else /* zlp */
|
||
+ count = 0;
|
||
+
|
||
+ is_short = (count < ep->ep.maxpacket);
|
||
+ DEBUG_EP0("read %s %02x, %d bytes%s req %p %d/%d\n",
|
||
+ ep->ep.name, csr, count,
|
||
+ is_short ? "/S" : "", req, req->req.actual, req->req.length);
|
||
+
|
||
+ while (likely(count-- != 0)) {
|
||
+ uint8_t byte = (uint8_t)usb_readl(dev, ep->fifo);
|
||
+
|
||
+ if (unlikely(bufferspace == 0)) {
|
||
+ /* this happens when the driver's buffer
|
||
+ * is smaller than what the host sent.
|
||
+ * discard the extra data.
|
||
+ */
|
||
+ if (req->req.status != -EOVERFLOW)
|
||
+ DEBUG_EP0("%s overflow %d\n", ep->ep.name,
|
||
+ count);
|
||
+ req->req.status = -EOVERFLOW;
|
||
+ } else {
|
||
+ *buf++ = byte;
|
||
+ bufferspace--;
|
||
+ }
|
||
+ }
|
||
+
|
||
+ /* completion */
|
||
+ if (is_short || req->req.actual == req->req.length) {
|
||
+ done(ep, req, 0);
|
||
+ return 1;
|
||
+ }
|
||
+
|
||
+ /* finished that packet. the next one may be waiting... */
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/**
|
||
+ * udc_set_address - set the USB address for this device
|
||
+ * @address:
|
||
+ *
|
||
+ * Called from control endpoint function after it decodes a set address setup packet.
|
||
+ */
|
||
+static void udc_set_address(struct jz4740_udc *dev, unsigned char address)
|
||
+{
|
||
+ DEBUG_EP0("%s: %d\n", __FUNCTION__, address);
|
||
+
|
||
+ usb_writeb(dev, JZ_REG_UDC_FADDR, address);
|
||
+}
|
||
+
|
||
+/*
|
||
+ * DATA_STATE_RECV (USB_CSR0_OUTPKTRDY)
|
||
+ * - if error
|
||
+ * set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL bits
|
||
+ * - else
|
||
+ * set USB_CSR0_SVDOUTPKTRDY bit
|
||
+ if last set USB_CSR0_DATAEND bit
|
||
+ */
|
||
+static void jz4740_ep0_out(struct jz4740_udc *dev, uint32_t csr, int kickstart)
|
||
+{
|
||
+ struct jz4740_request *req;
|
||
+ struct jz4740_ep *ep = &dev->ep[0];
|
||
+ int ret;
|
||
+
|
||
+ DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
|
||
+
|
||
+ if (list_empty(&ep->queue))
|
||
+ req = 0;
|
||
+ else
|
||
+ req = list_entry(ep->queue.next, struct jz4740_request, queue);
|
||
+
|
||
+ if (req) {
|
||
+ if (req->req.length == 0) {
|
||
+ DEBUG_EP0("ZERO LENGTH OUT!\n");
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ return;
|
||
+ } else if (kickstart) {
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY));
|
||
+ return;
|
||
+ }
|
||
+ ret = read_fifo_ep0(ep, req);
|
||
+ if (ret) {
|
||
+ /* Done! */
|
||
+ DEBUG_EP0("%s: finished, waiting for status\n",
|
||
+ __FUNCTION__);
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ } else {
|
||
+ /* Not done yet.. */
|
||
+ DEBUG_EP0("%s: not finished\n", __FUNCTION__);
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
|
||
+ }
|
||
+ } else {
|
||
+ DEBUG_EP0("NO REQ??!\n");
|
||
+ }
|
||
+}
|
||
+
|
||
+/*
|
||
+ * DATA_STATE_XMIT
|
||
+ */
|
||
+static int jz4740_ep0_in(struct jz4740_udc *dev, uint32_t csr)
|
||
+{
|
||
+ struct jz4740_request *req;
|
||
+ struct jz4740_ep *ep = &dev->ep[0];
|
||
+ int ret, need_zlp = 0;
|
||
+
|
||
+ DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
|
||
+
|
||
+ if (list_empty(&ep->queue))
|
||
+ req = 0;
|
||
+ else
|
||
+ req = list_entry(ep->queue.next, struct jz4740_request, queue);
|
||
+
|
||
+ if (!req) {
|
||
+ DEBUG_EP0("%s: NULL REQ\n", __FUNCTION__);
|
||
+ return 0;
|
||
+ }
|
||
+
|
||
+ if (req->req.length == 0) {
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ return 1;
|
||
+ }
|
||
+
|
||
+ if (req->req.length - req->req.actual == EP0_MAXPACKETSIZE) {
|
||
+ /* Next write will end with the packet size, */
|
||
+ /* so we need zero-length-packet */
|
||
+ need_zlp = 1;
|
||
+ }
|
||
+
|
||
+ ret = write_fifo_ep0(ep, req);
|
||
+
|
||
+ if (ret == 1 && !need_zlp) {
|
||
+ /* Last packet */
|
||
+ DEBUG_EP0("%s: finished, waiting for status\n", __FUNCTION__);
|
||
+
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ } else {
|
||
+ DEBUG_EP0("%s: not finished\n", __FUNCTION__);
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_INPKTRDY);
|
||
+ }
|
||
+
|
||
+ if (need_zlp) {
|
||
+ DEBUG_EP0("%s: Need ZLP!\n", __FUNCTION__);
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_INPKTRDY);
|
||
+ dev->ep0state = DATA_STATE_NEED_ZLP;
|
||
+ }
|
||
+
|
||
+ return 1;
|
||
+}
|
||
+
|
||
+static int jz4740_handle_get_status(struct jz4740_udc *dev,
|
||
+ struct usb_ctrlrequest *ctrl)
|
||
+{
|
||
+ struct jz4740_ep *ep0 = &dev->ep[0];
|
||
+ struct jz4740_ep *qep;
|
||
+ int reqtype = (ctrl->bRequestType & USB_RECIP_MASK);
|
||
+ uint16_t val = 0;
|
||
+
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+
|
||
+ if (reqtype == USB_RECIP_INTERFACE) {
|
||
+ /* This is not supported.
|
||
+ * And according to the USB spec, this one does nothing..
|
||
+ * Just return 0
|
||
+ */
|
||
+ DEBUG_SETUP("GET_STATUS: USB_RECIP_INTERFACE\n");
|
||
+ } else if (reqtype == USB_RECIP_DEVICE) {
|
||
+ DEBUG_SETUP("GET_STATUS: USB_RECIP_DEVICE\n");
|
||
+ val |= (1 << 0); /* Self powered */
|
||
+ /*val |= (1<<1); *//* Remote wakeup */
|
||
+ } else if (reqtype == USB_RECIP_ENDPOINT) {
|
||
+ int ep_num = (ctrl->wIndex & ~USB_DIR_IN);
|
||
+
|
||
+ DEBUG_SETUP
|
||
+ ("GET_STATUS: USB_RECIP_ENDPOINT (%d), ctrl->wLength = %d\n",
|
||
+ ep_num, ctrl->wLength);
|
||
+
|
||
+ if (ctrl->wLength > 2 || ep_num > 3)
|
||
+ return -EOPNOTSUPP;
|
||
+
|
||
+ qep = &dev->ep[ep_num];
|
||
+ if (ep_is_in(qep) != ((ctrl->wIndex & USB_DIR_IN) ? 1 : 0)
|
||
+ && ep_index(qep) != 0) {
|
||
+ return -EOPNOTSUPP;
|
||
+ }
|
||
+
|
||
+ jz_udc_select_ep(qep);
|
||
+
|
||
+ /* Return status on next IN token */
|
||
+ switch (qep->type) {
|
||
+ case ep_control:
|
||
+ val =
|
||
+ (usb_readb(dev, qep->csr) & USB_CSR0_SENDSTALL) ==
|
||
+ USB_CSR0_SENDSTALL;
|
||
+ break;
|
||
+ case ep_bulk_in:
|
||
+ case ep_interrupt:
|
||
+ val =
|
||
+ (usb_readb(dev, qep->csr) & USB_INCSR_SENDSTALL) ==
|
||
+ USB_INCSR_SENDSTALL;
|
||
+ break;
|
||
+ case ep_bulk_out:
|
||
+ val =
|
||
+ (usb_readb(dev, qep->csr) & USB_OUTCSR_SENDSTALL) ==
|
||
+ USB_OUTCSR_SENDSTALL;
|
||
+ break;
|
||
+ }
|
||
+
|
||
+ /* Back to EP0 index */
|
||
+ jz_udc_set_index(dev, 0);
|
||
+
|
||
+ DEBUG_SETUP("GET_STATUS, ep: %d (%x), val = %d\n", ep_num,
|
||
+ ctrl->wIndex, val);
|
||
+ } else {
|
||
+ DEBUG_SETUP("Unknown REQ TYPE: %d\n", reqtype);
|
||
+ return -EOPNOTSUPP;
|
||
+ }
|
||
+
|
||
+ /* Clear "out packet ready" */
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
|
||
+ /* Put status to FIFO */
|
||
+ jz4740_fifo_write(ep0, (uint8_t *)&val, sizeof(val));
|
||
+ /* Issue "In packet ready" */
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+/*
|
||
+ * WAIT_FOR_SETUP (OUTPKTRDY)
|
||
+ * - read data packet from EP0 FIFO
|
||
+ * - decode command
|
||
+ * - if error
|
||
+ * set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL bits
|
||
+ * - else
|
||
+ * set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND bits
|
||
+ */
|
||
+static void jz4740_ep0_setup(struct jz4740_udc *dev, uint32_t csr)
|
||
+{
|
||
+ struct jz4740_ep *ep = &dev->ep[0];
|
||
+ struct usb_ctrlrequest ctrl;
|
||
+ int i;
|
||
+
|
||
+ DEBUG_SETUP("%s: %x\n", __FUNCTION__, csr);
|
||
+
|
||
+ /* Nuke all previous transfers */
|
||
+ nuke(ep, -EPROTO);
|
||
+
|
||
+ /* read control req from fifo (8 bytes) */
|
||
+ jz4740_fifo_read(ep, (unsigned char *)&ctrl, 8);
|
||
+
|
||
+ DEBUG_SETUP("SETUP %02x.%02x v%04x i%04x l%04x\n",
|
||
+ ctrl.bRequestType, ctrl.bRequest,
|
||
+ ctrl.wValue, ctrl.wIndex, ctrl.wLength);
|
||
+
|
||
+ /* Set direction of EP0 */
|
||
+ if (likely(ctrl.bRequestType & USB_DIR_IN)) {
|
||
+ ep->bEndpointAddress |= USB_DIR_IN;
|
||
+ } else {
|
||
+ ep->bEndpointAddress &= ~USB_DIR_IN;
|
||
+ }
|
||
+
|
||
+ /* Handle some SETUP packets ourselves */
|
||
+ switch (ctrl.bRequest) {
|
||
+ case USB_REQ_SET_ADDRESS:
|
||
+ if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
|
||
+ break;
|
||
+
|
||
+ DEBUG_SETUP("USB_REQ_SET_ADDRESS (%d)\n", ctrl.wValue);
|
||
+ udc_set_address(dev, ctrl.wValue);
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
|
||
+ return;
|
||
+
|
||
+ case USB_REQ_SET_CONFIGURATION:
|
||
+ if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
|
||
+ break;
|
||
+
|
||
+ DEBUG_SETUP("USB_REQ_SET_CONFIGURATION (%d)\n", ctrl.wValue);
|
||
+/* usb_setb(JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));*/
|
||
+
|
||
+ /* Enable RESUME and SUSPEND interrupts */
|
||
+ usb_setb(dev, JZ_REG_UDC_INTRUSBE, (USB_INTR_RESUME | USB_INTR_SUSPEND));
|
||
+ break;
|
||
+
|
||
+ case USB_REQ_SET_INTERFACE:
|
||
+ if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
|
||
+ break;
|
||
+
|
||
+ DEBUG_SETUP("USB_REQ_SET_INTERFACE (%d)\n", ctrl.wValue);
|
||
+/* usb_setb(JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));*/
|
||
+ break;
|
||
+
|
||
+ case USB_REQ_GET_STATUS:
|
||
+ if (jz4740_handle_get_status(dev, &ctrl) == 0)
|
||
+ return;
|
||
+
|
||
+ case USB_REQ_CLEAR_FEATURE:
|
||
+ case USB_REQ_SET_FEATURE:
|
||
+ if (ctrl.bRequestType == USB_RECIP_ENDPOINT) {
|
||
+ struct jz4740_ep *qep;
|
||
+ int ep_num = (ctrl.wIndex & 0x0f);
|
||
+
|
||
+ /* Support only HALT feature */
|
||
+ if (ctrl.wValue != 0 || ctrl.wLength != 0
|
||
+ || ep_num > 3 || ep_num < 1)
|
||
+ break;
|
||
+
|
||
+ qep = &dev->ep[ep_num];
|
||
+ spin_unlock(&dev->lock);
|
||
+ if (ctrl.bRequest == USB_REQ_SET_FEATURE) {
|
||
+ DEBUG_SETUP("SET_FEATURE (%d)\n",
|
||
+ ep_num);
|
||
+ jz4740_set_halt(&qep->ep, 1);
|
||
+ } else {
|
||
+ DEBUG_SETUP("CLR_FEATURE (%d)\n",
|
||
+ ep_num);
|
||
+ jz4740_set_halt(&qep->ep, 0);
|
||
+ }
|
||
+ spin_lock(&dev->lock);
|
||
+
|
||
+ jz_udc_set_index(dev, 0);
|
||
+
|
||
+ /* Reply with a ZLP on next IN token */
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0,
|
||
+ (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
|
||
+ return;
|
||
+ }
|
||
+ break;
|
||
+
|
||
+ default:
|
||
+ break;
|
||
+ }
|
||
+
|
||
+ /* gadget drivers see class/vendor specific requests,
|
||
+ * {SET,GET}_{INTERFACE,DESCRIPTOR,CONFIGURATION},
|
||
+ * and more.
|
||
+ */
|
||
+ if (dev->driver) {
|
||
+ /* device-2-host (IN) or no data setup command, process immediately */
|
||
+ spin_unlock(&dev->lock);
|
||
+
|
||
+ i = dev->driver->setup(&dev->gadget, &ctrl);
|
||
+ spin_lock(&dev->lock);
|
||
+
|
||
+ if (unlikely(i < 0)) {
|
||
+ /* setup processing failed, force stall */
|
||
+ DEBUG_SETUP
|
||
+ (" --> ERROR: gadget setup FAILED (stalling), setup returned %d\n",
|
||
+ i);
|
||
+ jz_udc_set_index(dev, 0);
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL));
|
||
+
|
||
+ /* ep->stopped = 1; */
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ }
|
||
+ else {
|
||
+ DEBUG_SETUP("gadget driver setup ok (%d)\n", ctrl.wLength);
|
||
+/* if (!ctrl.wLength) {
|
||
+ usb_setb(JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
|
||
+ }*/
|
||
+ }
|
||
+ }
|
||
+}
|
||
+
|
||
+/*
|
||
+ * DATA_STATE_NEED_ZLP
|
||
+ */
|
||
+static void jz4740_ep0_in_zlp(struct jz4740_udc *dev, uint32_t csr)
|
||
+{
|
||
+ DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
|
||
+
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+}
|
||
+
|
||
+/*
|
||
+ * handle ep0 interrupt
|
||
+ */
|
||
+static void jz4740_handle_ep0(struct jz4740_udc *dev, uint32_t intr)
|
||
+{
|
||
+ struct jz4740_ep *ep = &dev->ep[0];
|
||
+ uint32_t csr;
|
||
+
|
||
+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
|
||
+ /* Set index 0 */
|
||
+ jz_udc_set_index(dev, 0);
|
||
+ csr = usb_readb(dev, JZ_REG_UDC_CSR0);
|
||
+
|
||
+ DEBUG_EP0("%s: csr = %x state = \n", __FUNCTION__, csr);//, state_names[dev->ep0state]);
|
||
+
|
||
+ /*
|
||
+ * if SENT_STALL is set
|
||
+ * - clear the SENT_STALL bit
|
||
+ */
|
||
+ if (csr & USB_CSR0_SENTSTALL) {
|
||
+ DEBUG_EP0("%s: USB_CSR0_SENTSTALL is set: %x\n", __FUNCTION__, csr);
|
||
+ usb_clearb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SENDSTALL | USB_CSR0_SENTSTALL);
|
||
+ nuke(ep, -ECONNABORTED);
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ return;
|
||
+ }
|
||
+
|
||
+ /*
|
||
+ * if a transfer is in progress && INPKTRDY and OUTPKTRDY are clear
|
||
+ * - fill EP0 FIFO
|
||
+ * - if last packet
|
||
+ * - set IN_PKT_RDY | DATA_END
|
||
+ * - else
|
||
+ * set IN_PKT_RDY
|
||
+ */
|
||
+ if (!(csr & (USB_CSR0_INPKTRDY | USB_CSR0_OUTPKTRDY))) {
|
||
+ DEBUG_EP0("%s: INPKTRDY and OUTPKTRDY are clear\n",
|
||
+ __FUNCTION__);
|
||
+
|
||
+ switch (dev->ep0state) {
|
||
+ case DATA_STATE_XMIT:
|
||
+ DEBUG_EP0("continue with DATA_STATE_XMIT\n");
|
||
+ jz4740_ep0_in(dev, csr);
|
||
+ return;
|
||
+ case DATA_STATE_NEED_ZLP:
|
||
+ DEBUG_EP0("continue with DATA_STATE_NEED_ZLP\n");
|
||
+ jz4740_ep0_in_zlp(dev, csr);
|
||
+ return;
|
||
+ default:
|
||
+ /* Stall? */
|
||
+// DEBUG_EP0("Odd state!! state = %s\n",
|
||
+// state_names[dev->ep0state]);
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ /* nuke(ep, 0); */
|
||
+ /* usb_setb(ep->csr, USB_CSR0_SENDSTALL); */
|
||
+// break;
|
||
+ return;
|
||
+ }
|
||
+ }
|
||
+
|
||
+ /*
|
||
+ * if SETUPEND is set
|
||
+ * - abort the last transfer
|
||
+ * - set SERVICED_SETUP_END_BIT
|
||
+ */
|
||
+ if (csr & USB_CSR0_SETUPEND) {
|
||
+ DEBUG_EP0("%s: USB_CSR0_SETUPEND is set: %x\n", __FUNCTION__, csr);
|
||
+
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDSETUPEND);
|
||
+ nuke(ep, 0);
|
||
+ dev->ep0state = WAIT_FOR_SETUP;
|
||
+ }
|
||
+
|
||
+ /*
|
||
+ * if USB_CSR0_OUTPKTRDY is set
|
||
+ * - read data packet from EP0 FIFO
|
||
+ * - decode command
|
||
+ * - if error
|
||
+ * set SVDOUTPKTRDY | DATAEND | SENDSTALL bits
|
||
+ * - else
|
||
+ * set SVDOUTPKTRDY | DATAEND bits
|
||
+ */
|
||
+ if (csr & USB_CSR0_OUTPKTRDY) {
|
||
+
|
||
+ DEBUG_EP0("%s: EP0_OUT_PKT_RDY is set: %x\n", __FUNCTION__,
|
||
+ csr);
|
||
+
|
||
+ switch (dev->ep0state) {
|
||
+ case WAIT_FOR_SETUP:
|
||
+ DEBUG_EP0("WAIT_FOR_SETUP\n");
|
||
+ jz4740_ep0_setup(dev, csr);
|
||
+ break;
|
||
+
|
||
+ case DATA_STATE_RECV:
|
||
+ DEBUG_EP0("DATA_STATE_RECV\n");
|
||
+ jz4740_ep0_out(dev, csr, 0);
|
||
+ break;
|
||
+
|
||
+ default:
|
||
+ /* send stall? */
|
||
+ DEBUG_EP0("strange state!! 2. send stall? state = %d\n",
|
||
+ dev->ep0state);
|
||
+ break;
|
||
+ }
|
||
+ }
|
||
+}
|
||
+
|
||
+static void jz4740_ep0_kick(struct jz4740_udc *dev, struct jz4740_ep *ep)
|
||
+{
|
||
+ uint32_t csr;
|
||
+
|
||
+ jz_udc_set_index(dev, 0);
|
||
+
|
||
+ DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
|
||
+
|
||
+ /* Clear "out packet ready" */
|
||
+
|
||
+ if (ep_is_in(ep)) {
|
||
+ usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
|
||
+ csr = usb_readb(dev, JZ_REG_UDC_CSR0);
|
||
+ dev->ep0state = DATA_STATE_XMIT;
|
||
+ jz4740_ep0_in(dev, csr);
|
||
+ } else {
|
||
+ csr = usb_readb(dev, JZ_REG_UDC_CSR0);
|
||
+ dev->ep0state = DATA_STATE_RECV;
|
||
+ jz4740_ep0_out(dev, csr, 1);
|
||
+ }
|
||
+}
|
||
+
|
||
+/** Handle USB RESET interrupt
|
||
+ */
|
||
+static void jz4740_reset_irq(struct jz4740_udc *dev)
|
||
+{
|
||
+ dev->gadget.speed = (usb_readb(dev, JZ_REG_UDC_POWER) & USB_POWER_HSMODE) ?
|
||
+ USB_SPEED_HIGH : USB_SPEED_FULL;
|
||
+
|
||
+ DEBUG_SETUP("%s: address = %d, speed = %s\n", __FUNCTION__, 0,
|
||
+ (dev->gadget.speed == USB_SPEED_HIGH) ? "HIGH":"FULL" );
|
||
+}
|
||
+
|
||
+/*
|
||
+ * jz4740 usb device interrupt handler.
|
||
+ */
|
||
+static irqreturn_t jz4740_udc_irq(int irq, void *devid)
|
||
+{
|
||
+ struct jz4740_udc *jz4740_udc = devid;
|
||
+ uint8_t index;
|
||
+
|
||
+ uint32_t intr_usb = usb_readb(jz4740_udc, JZ_REG_UDC_INTRUSB) & 0x7; /* mask SOF */
|
||
+ uint32_t intr_in = usb_readw(jz4740_udc, JZ_REG_UDC_INTRIN);
|
||
+ uint32_t intr_out = usb_readw(jz4740_udc, JZ_REG_UDC_INTROUT);
|
||
+ uint32_t intr_dma = usb_readb(jz4740_udc, JZ_REG_UDC_INTR);
|
||
+
|
||
+ if (!intr_usb && !intr_in && !intr_out && !intr_dma)
|
||
+ return IRQ_HANDLED;
|
||
+
|
||
+
|
||
+ DEBUG("intr_out=%x intr_in=%x intr_usb=%x\n",
|
||
+ intr_out, intr_in, intr_usb);
|
||
+
|
||
+ spin_lock(&jz4740_udc->lock);
|
||
+ index = usb_readb(jz4740_udc, JZ_REG_UDC_INDEX);
|
||
+
|
||
+ /* Check for resume from suspend mode */
|
||
+ if ((intr_usb & USB_INTR_RESUME) &&
|
||
+ (usb_readb(jz4740_udc, JZ_REG_UDC_INTRUSBE) & USB_INTR_RESUME)) {
|
||
+ DEBUG("USB resume\n");
|
||
+ jz4740_udc->driver->resume(&jz4740_udc->gadget); /* We have suspend(), so we must have resume() too. */
|
||
+ }
|
||
+
|
||
+ /* Check for system interrupts */
|
||
+ if (intr_usb & USB_INTR_RESET) {
|
||
+ DEBUG("USB reset\n");
|
||
+ jz4740_reset_irq(jz4740_udc);
|
||
+ }
|
||
+
|
||
+ /* Check for endpoint 0 interrupt */
|
||
+ if (intr_in & USB_INTR_EP0) {
|
||
+ DEBUG("USB_INTR_EP0 (control)\n");
|
||
+ jz4740_handle_ep0(jz4740_udc, intr_in);
|
||
+ }
|
||
+
|
||
+ /* Check for Bulk-IN DMA interrupt */
|
||
+ if (intr_dma & 0x1) {
|
||
+ int ep_num;
|
||
+ struct jz4740_ep *ep;
|
||
+ ep_num = (usb_readl(jz4740_udc, JZ_REG_UDC_CNTL1) >> 4) & 0xf;
|
||
+ ep = &jz4740_udc->ep[ep_num + 1];
|
||
+ jz_udc_select_ep(ep);
|
||
+ usb_setb(jz4740_udc, ep->csr, USB_INCSR_INPKTRDY);
|
||
+/* jz4740_in_epn(jz4740_udc, ep_num, intr_in);*/
|
||
+ }
|
||
+
|
||
+ /* Check for Bulk-OUT DMA interrupt */
|
||
+ if (intr_dma & 0x2) {
|
||
+ int ep_num;
|
||
+ ep_num = (usb_readl(jz4740_udc, JZ_REG_UDC_CNTL2) >> 4) & 0xf;
|
||
+ jz4740_out_epn(jz4740_udc, ep_num, intr_out);
|
||
+ }
|
||
+
|
||
+ /* Check for each configured endpoint interrupt */
|
||
+ if (intr_in & USB_INTR_INEP1) {
|
||
+ DEBUG("USB_INTR_INEP1\n");
|
||
+ jz4740_in_epn(jz4740_udc, 1, intr_in);
|
||
+ }
|
||
+
|
||
+ if (intr_in & USB_INTR_INEP2) {
|
||
+ DEBUG("USB_INTR_INEP2\n");
|
||
+ jz4740_in_epn(jz4740_udc, 2, intr_in);
|
||
+ }
|
||
+
|
||
+ if (intr_out & USB_INTR_OUTEP1) {
|
||
+ DEBUG("USB_INTR_OUTEP1\n");
|
||
+ jz4740_out_epn(jz4740_udc, 1, intr_out);
|
||
+ }
|
||
+
|
||
+ /* Check for suspend mode */
|
||
+ if ((intr_usb & USB_INTR_SUSPEND) &&
|
||
+ (usb_readb(jz4740_udc, JZ_REG_UDC_INTRUSBE) & USB_INTR_SUSPEND)) {
|
||
+ DEBUG("USB suspend\n");
|
||
+ jz4740_udc->driver->suspend(&jz4740_udc->gadget);
|
||
+ /* Host unloaded from us, can do something, such as flushing
|
||
+ the NAND block cache etc. */
|
||
+ }
|
||
+
|
||
+ jz_udc_set_index(jz4740_udc, index);
|
||
+
|
||
+ spin_unlock(&jz4740_udc->lock);
|
||
+
|
||
+ return IRQ_HANDLED;
|
||
+}
|
||
+
|
||
+
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+
|
||
+static inline struct jz4740_udc *gadget_to_udc(struct usb_gadget *gadget)
|
||
+{
|
||
+ return container_of(gadget, struct jz4740_udc, gadget);
|
||
+}
|
||
+
|
||
+static int jz4740_udc_get_frame(struct usb_gadget *_gadget)
|
||
+{
|
||
+ DEBUG("%s, %p\n", __FUNCTION__, _gadget);
|
||
+ return usb_readw(gadget_to_udc(_gadget), JZ_REG_UDC_FRAME);
|
||
+}
|
||
+
|
||
+static int jz4740_udc_wakeup(struct usb_gadget *_gadget)
|
||
+{
|
||
+ /* host may not have enabled remote wakeup */
|
||
+ /*if ((UDCCS0 & UDCCS0_DRWF) == 0)
|
||
+ return -EHOSTUNREACH;
|
||
+ udc_set_mask_UDCCR(UDCCR_RSM); */
|
||
+ return -ENOTSUPP;
|
||
+}
|
||
+
|
||
+static int jz4740_udc_pullup(struct usb_gadget *_gadget, int on)
|
||
+{
|
||
+ struct jz4740_udc *udc = gadget_to_udc(_gadget);
|
||
+ unsigned long flags;
|
||
+
|
||
+ local_irq_save(flags);
|
||
+
|
||
+ if (on) {
|
||
+ udc->state = UDC_STATE_ENABLE;
|
||
+ udc_enable(udc);
|
||
+ } else {
|
||
+ udc->state = UDC_STATE_DISABLE;
|
||
+ udc_disable(udc);
|
||
+ }
|
||
+
|
||
+ local_irq_restore(flags);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+
|
||
+static const struct usb_gadget_ops jz4740_udc_ops = {
|
||
+ .get_frame = jz4740_udc_get_frame,
|
||
+ .wakeup = jz4740_udc_wakeup,
|
||
+ .pullup = jz4740_udc_pullup,
|
||
+ .start = jz4740_udc_start,
|
||
+ .stop = jz4740_udc_stop,
|
||
+};
|
||
+
|
||
+static struct usb_ep_ops jz4740_ep_ops = {
|
||
+ .enable = jz4740_ep_enable,
|
||
+ .disable = jz4740_ep_disable,
|
||
+
|
||
+ .alloc_request = jz4740_alloc_request,
|
||
+ .free_request = jz4740_free_request,
|
||
+
|
||
+ .queue = jz4740_queue,
|
||
+ .dequeue = jz4740_dequeue,
|
||
+
|
||
+ .set_halt = jz4740_set_halt,
|
||
+ .fifo_status = jz4740_fifo_status,
|
||
+ .fifo_flush = jz4740_fifo_flush,
|
||
+};
|
||
+
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+static struct jz4740_udc jz4740_udc_controller = {
|
||
+ .gadget = {
|
||
+ .ops = &jz4740_udc_ops,
|
||
+ .ep0 = &jz4740_udc_controller.ep[0].ep,
|
||
+ .name = "jz4740-udc",
|
||
+ .dev = {
|
||
+ .init_name = "gadget",
|
||
+ },
|
||
+ },
|
||
+
|
||
+ /* control endpoint */
|
||
+ .ep[0] = {
|
||
+ .ep = {
|
||
+ .name = "ep0",
|
||
+ .ops = &jz4740_ep_ops,
|
||
+ .maxpacket = EP0_MAXPACKETSIZE,
|
||
+ },
|
||
+ .dev = &jz4740_udc_controller,
|
||
+
|
||
+ .bEndpointAddress = 0,
|
||
+ .bmAttributes = 0,
|
||
+
|
||
+ .type = ep_control,
|
||
+ .fifo = JZ_REG_UDC_EP_FIFO(0),
|
||
+ .csr = JZ_REG_UDC_CSR0,
|
||
+ },
|
||
+
|
||
+ /* bulk out endpoint */
|
||
+ .ep[1] = {
|
||
+ .ep = {
|
||
+ .name = "ep1out-bulk",
|
||
+ .ops = &jz4740_ep_ops,
|
||
+ .maxpacket = EPBULK_MAXPACKETSIZE,
|
||
+ },
|
||
+ .dev = &jz4740_udc_controller,
|
||
+
|
||
+ .bEndpointAddress = 1,
|
||
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
|
||
+
|
||
+ .type = ep_bulk_out,
|
||
+ .fifo = JZ_REG_UDC_EP_FIFO(1),
|
||
+ .csr = JZ_REG_UDC_OUTCSR,
|
||
+ },
|
||
+
|
||
+ /* bulk in endpoint */
|
||
+ .ep[2] = {
|
||
+ .ep = {
|
||
+ .name = "ep1in-bulk",
|
||
+ .ops = &jz4740_ep_ops,
|
||
+ .maxpacket = EPBULK_MAXPACKETSIZE,
|
||
+ },
|
||
+ .dev = &jz4740_udc_controller,
|
||
+
|
||
+ .bEndpointAddress = 1 | USB_DIR_IN,
|
||
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
|
||
+
|
||
+ .type = ep_bulk_in,
|
||
+ .fifo = JZ_REG_UDC_EP_FIFO(1),
|
||
+ .csr = JZ_REG_UDC_INCSR,
|
||
+ },
|
||
+
|
||
+ /* interrupt in endpoint */
|
||
+ .ep[3] = {
|
||
+ .ep = {
|
||
+ .name = "ep2in-int",
|
||
+ .ops = &jz4740_ep_ops,
|
||
+ .maxpacket = EPINTR_MAXPACKETSIZE,
|
||
+ },
|
||
+ .dev = &jz4740_udc_controller,
|
||
+
|
||
+ .bEndpointAddress = 2 | USB_DIR_IN,
|
||
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
|
||
+
|
||
+ .type = ep_interrupt,
|
||
+ .fifo = JZ_REG_UDC_EP_FIFO(2),
|
||
+ .csr = JZ_REG_UDC_INCSR,
|
||
+ },
|
||
+};
|
||
+
|
||
+static int __devinit jz4740_udc_probe(struct platform_device *pdev)
|
||
+{
|
||
+ struct jz4740_udc *jz4740_udc = &jz4740_udc_controller;
|
||
+ int ret;
|
||
+
|
||
+ spin_lock_init(&jz4740_udc->lock);
|
||
+
|
||
+ jz4740_udc->dev = &pdev->dev;
|
||
+ jz4740_udc->gadget.dev.parent = &pdev->dev;
|
||
+ jz4740_udc->gadget.dev.dma_mask = pdev->dev.dma_mask;
|
||
+
|
||
+ ret = device_register(&jz4740_udc->gadget.dev);
|
||
+ if (ret)
|
||
+ return ret;
|
||
+
|
||
+ jz4740_udc->clk = clk_get(&pdev->dev, "udc");
|
||
+ if (IS_ERR(jz4740_udc->clk)) {
|
||
+ ret = PTR_ERR(jz4740_udc->clk);
|
||
+ dev_err(&pdev->dev, "Failed to get udc clock: %d\n", ret);
|
||
+ goto err_device_unregister;
|
||
+ }
|
||
+
|
||
+ platform_set_drvdata(pdev, jz4740_udc);
|
||
+
|
||
+ jz4740_udc->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||
+
|
||
+ if (!jz4740_udc->mem) {
|
||
+ ret = -ENOENT;
|
||
+ dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
|
||
+ goto err_clk_put;
|
||
+ }
|
||
+
|
||
+ jz4740_udc->mem = request_mem_region(jz4740_udc->mem->start,
|
||
+ resource_size(jz4740_udc->mem), pdev->name);
|
||
+
|
||
+ if (!jz4740_udc->mem) {
|
||
+ ret = -EBUSY;
|
||
+ dev_err(&pdev->dev, "Failed to request mmio memory region\n");
|
||
+ goto err_device_unregister;
|
||
+ }
|
||
+
|
||
+ jz4740_udc->base = ioremap(jz4740_udc->mem->start, resource_size(jz4740_udc->mem));
|
||
+
|
||
+ if (!jz4740_udc->base) {
|
||
+ ret = -EBUSY;
|
||
+ dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
|
||
+ goto err_release_mem_region;
|
||
+ }
|
||
+
|
||
+ jz4740_udc->irq = platform_get_irq(pdev, 0);
|
||
+ ret = request_irq(jz4740_udc->irq, jz4740_udc_irq, 0, pdev->name,
|
||
+ jz4740_udc);
|
||
+ if (ret) {
|
||
+ dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
|
||
+ goto err_iounmap;
|
||
+ }
|
||
+
|
||
+ ret = usb_add_gadget_udc(&pdev->dev, &jz4740_udc->gadget);
|
||
+ if (ret) {
|
||
+ dev_err(&pdev->dev, "Failed to add gadget: %d\n", ret);
|
||
+ goto err_free_irq;
|
||
+ }
|
||
+
|
||
+ udc_disable(jz4740_udc);
|
||
+ udc_reinit(jz4740_udc);
|
||
+
|
||
+ return 0;
|
||
+
|
||
+err_free_irq:
|
||
+ free_irq(jz4740_udc->irq, pdev);
|
||
+err_iounmap:
|
||
+ iounmap(jz4740_udc->base);
|
||
+err_release_mem_region:
|
||
+ release_mem_region(jz4740_udc->mem->start, resource_size(jz4740_udc->mem));
|
||
+err_clk_put:
|
||
+ clk_put(jz4740_udc->clk);
|
||
+err_device_unregister:
|
||
+ device_unregister(&jz4740_udc->gadget.dev);
|
||
+ platform_set_drvdata(pdev, NULL);
|
||
+
|
||
+ return ret;
|
||
+}
|
||
+
|
||
+static int __devexit jz4740_udc_remove(struct platform_device *pdev)
|
||
+{
|
||
+ struct jz4740_udc *dev = platform_get_drvdata(pdev);
|
||
+
|
||
+ usb_del_gadget_udc(&dev->gadget);
|
||
+ if (dev->driver)
|
||
+ return -EBUSY;
|
||
+
|
||
+ udc_disable(dev);
|
||
+
|
||
+ free_irq(dev->irq, dev);
|
||
+ iounmap(dev->base);
|
||
+ release_mem_region(dev->mem->start, resource_size(dev->mem));
|
||
+ clk_put(dev->clk);
|
||
+
|
||
+ platform_set_drvdata(pdev, NULL);
|
||
+ device_unregister(&dev->gadget.dev);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+#ifdef CONFIG_PM
|
||
+
|
||
+static int jz4740_udc_suspend(struct device *dev)
|
||
+{
|
||
+ struct jz4740_udc *jz4740_udc = dev_get_drvdata(dev);
|
||
+
|
||
+ if (jz4740_udc->state == UDC_STATE_ENABLE)
|
||
+ udc_disable(jz4740_udc);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+static int jz4740_udc_resume(struct device *dev)
|
||
+{
|
||
+ struct jz4740_udc *jz4740_udc = dev_get_drvdata(dev);
|
||
+
|
||
+ if (jz4740_udc->state == UDC_STATE_ENABLE)
|
||
+ udc_enable(jz4740_udc);
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+static SIMPLE_DEV_PM_OPS(jz4740_udc_pm_ops, jz4740_udc_suspend, jz4740_udc_resume);
|
||
+#define JZ4740_UDC_PM_OPS (&jz4740_udc_pm_ops)
|
||
+
|
||
+#else
|
||
+#define JZ4740_UDC_PM_OPS NULL
|
||
+#endif
|
||
+
|
||
+static struct platform_driver udc_driver = {
|
||
+ .probe = jz4740_udc_probe,
|
||
+ .remove = __devexit_p(jz4740_udc_remove),
|
||
+ .driver = {
|
||
+ .name = "jz-udc",
|
||
+ .owner = THIS_MODULE,
|
||
+ .pm = JZ4740_UDC_PM_OPS,
|
||
+ },
|
||
+};
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+static int __init udc_init (void)
|
||
+{
|
||
+ return platform_driver_register(&udc_driver);
|
||
+}
|
||
+module_init(udc_init);
|
||
+
|
||
+static void __exit udc_exit (void)
|
||
+{
|
||
+ platform_driver_unregister(&udc_driver);
|
||
+}
|
||
+module_exit(udc_exit);
|
||
+
|
||
+MODULE_DESCRIPTION("JZ4740 USB Device Controller");
|
||
+MODULE_AUTHOR("Wei Jianli <jlwei@ingenic.cn>");
|
||
+MODULE_LICENSE("GPL");
|
||
--- /dev/null
|
||
+++ b/drivers/usb/gadget/jz4740_udc.h
|
||
@@ -0,0 +1,101 @@
|
||
+/*
|
||
+ * linux/drivers/usb/gadget/jz4740_udc.h
|
||
+ *
|
||
+ * Ingenic JZ4740 on-chip high speed USB device controller
|
||
+ *
|
||
+ * Copyright (C) 2006 Ingenic Semiconductor Inc.
|
||
+ * Author: <jlwei@ingenic.cn>
|
||
+ *
|
||
+ * 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.
|
||
+ */
|
||
+
|
||
+#ifndef __USB_GADGET_JZ4740_H__
|
||
+#define __USB_GADGET_JZ4740_H__
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+// Max packet size
|
||
+#define EP0_MAXPACKETSIZE 64
|
||
+#define EPBULK_MAXPACKETSIZE 512
|
||
+#define EPINTR_MAXPACKETSIZE 64
|
||
+
|
||
+#define UDC_MAX_ENDPOINTS 4
|
||
+
|
||
+/*-------------------------------------------------------------------------*/
|
||
+
|
||
+enum ep_type {
|
||
+ ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
|
||
+};
|
||
+
|
||
+struct jz4740_ep {
|
||
+ struct usb_ep ep;
|
||
+ struct jz4740_udc *dev;
|
||
+
|
||
+ const struct usb_endpoint_descriptor *desc;
|
||
+
|
||
+ uint8_t stopped;
|
||
+ uint8_t bEndpointAddress;
|
||
+ uint8_t bmAttributes;
|
||
+
|
||
+ enum ep_type type;
|
||
+ size_t fifo;
|
||
+ uint32_t csr;
|
||
+
|
||
+ uint32_t reg_addr;
|
||
+ struct list_head queue;
|
||
+};
|
||
+
|
||
+struct jz4740_request {
|
||
+ struct usb_request req;
|
||
+ struct list_head queue;
|
||
+};
|
||
+
|
||
+enum ep0state {
|
||
+ WAIT_FOR_SETUP, /* between STATUS ack and SETUP report */
|
||
+ DATA_STATE_XMIT, /* data tx stage */
|
||
+ DATA_STATE_NEED_ZLP, /* data tx zlp stage */
|
||
+ WAIT_FOR_OUT_STATUS, /* status stages */
|
||
+ DATA_STATE_RECV, /* data rx stage */
|
||
+};
|
||
+
|
||
+/* For function binding with UDC Disable - Added by River */
|
||
+typedef enum {
|
||
+ UDC_STATE_ENABLE = 0,
|
||
+ UDC_STATE_DISABLE,
|
||
+}udc_state_t;
|
||
+
|
||
+struct jz4740_udc {
|
||
+ struct usb_gadget gadget;
|
||
+ struct usb_gadget_driver *driver;
|
||
+ struct device *dev;
|
||
+ spinlock_t lock;
|
||
+ unsigned long lock_flags;
|
||
+
|
||
+ enum ep0state ep0state;
|
||
+ struct jz4740_ep ep[UDC_MAX_ENDPOINTS];
|
||
+
|
||
+ udc_state_t state;
|
||
+
|
||
+ struct resource *mem;
|
||
+ void __iomem *base;
|
||
+ int irq;
|
||
+
|
||
+ struct clk *clk;
|
||
+};
|
||
+
|
||
+#define ep_maxpacket(EP) ((EP)->ep.maxpacket)
|
||
+
|
||
+static inline bool ep_is_in(const struct jz4740_ep *ep)
|
||
+{
|
||
+ return (ep->bEndpointAddress & USB_DIR_IN) == USB_DIR_IN;
|
||
+}
|
||
+
|
||
+static inline uint8_t ep_index(const struct jz4740_ep *ep)
|
||
+{
|
||
+ return ep->bEndpointAddress & 0xf;
|
||
+}
|
||
+
|
||
+#endif /* __USB_GADGET_JZ4740_H__ */
|