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USB: gadget: add atmel usba udc driver
Add atmel usba udc driver support, porting from Linux kernel
The original code in Linux Kernel information is as following
commit e01ee9f509a927158f670408b41127d4166db1c7
Author: Jingoo Han <jg1.han@samsung.com>
Date: Tue Jul 30 17:00:51 2013 +0900
usb: gadget: use dev_get_platdata()
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
This commit is contained in:
Bo Shen
Marek Vasut
parent
898d686eea
commit
9e40493fd8
64
arch/arm/include/asm/arch-at91/atmel_usba_udc.h
Normal file
64
arch/arm/include/asm/arch-at91/atmel_usba_udc.h
Normal file
@ -0,0 +1,64 @@
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/*
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* Copyright (C) 2005-2013 Atmel Corporation
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* Bo Shen <voice.shen@atmel.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ATMEL_USBA_UDC_H__
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#define __ATMEL_USBA_UDC_H__
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#include <linux/usb/atmel_usba_udc.h>
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#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
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[idx] = { \
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.name = nam, \
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.index = idx, \
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.fifo_size = maxpkt, \
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.nr_banks = maxbk, \
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.can_dma = dma, \
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.can_isoc = isoc, \
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}
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#if defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
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defined(CONFIG_AT91SAM9X5)
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static struct usba_ep_data usba_udc_ep[] = {
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EP("ep0", 0, 64, 1, 0, 0),
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EP("ep1", 1, 1024, 2, 1, 1),
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EP("ep2", 2, 1024, 2, 1, 1),
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EP("ep3", 3, 1024, 3, 1, 0),
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EP("ep4", 4, 1024, 3, 1, 0),
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EP("ep5", 5, 1024, 3, 1, 1),
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EP("ep6", 6, 1024, 3, 1, 1),
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};
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#elif defined(CONFIG_SAMA5D3)
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static struct usba_ep_data usba_udc_ep[] = {
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EP("ep0", 0, 64, 1, 0, 0),
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EP("ep1", 1, 1024, 3, 1, 0),
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EP("ep2", 2, 1024, 3, 1, 0),
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EP("ep3", 3, 1024, 2, 1, 0),
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EP("ep4", 4, 1024, 2, 1, 0),
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EP("ep5", 5, 1024, 2, 1, 0),
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EP("ep6", 6, 1024, 2, 1, 0),
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EP("ep7", 7, 1024, 2, 1, 0),
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EP("ep8", 8, 1024, 2, 0, 0),
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EP("ep9", 9, 1024, 2, 0, 0),
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EP("ep10", 10, 1024, 2, 0, 0),
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EP("ep11", 11, 1024, 2, 0, 0),
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EP("ep12", 12, 1024, 2, 0, 0),
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EP("ep13", 13, 1024, 2, 0, 0),
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EP("ep14", 14, 1024, 2, 0, 0),
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EP("ep15", 15, 1024, 2, 0, 0),
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};
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#else
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# error "NO usba_udc_ep defined"
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#endif
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#undef EP
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struct usba_platform_data pdata = {
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.num_ep = ARRAY_SIZE(usba_udc_ep),
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.ep = usba_udc_ep,
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};
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#endif
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@ -18,6 +18,7 @@ endif
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# new USB gadget layer dependencies
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ifdef CONFIG_USB_GADGET
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COBJS-$(CONFIG_USB_GADGET_ATMEL_USBA) += atmel_usba_udc.o
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COBJS-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += s3c_udc_otg.o
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COBJS-$(CONFIG_USB_GADGET_FOTG210) += fotg210.o
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COBJS-$(CONFIG_USBDOWNLOAD_GADGET) += g_dnl.o
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1305
drivers/usb/gadget/atmel_usba_udc.c
Normal file
1305
drivers/usb/gadget/atmel_usba_udc.c
Normal file
File diff suppressed because it is too large
Load Diff
326
drivers/usb/gadget/atmel_usba_udc.h
Normal file
326
drivers/usb/gadget/atmel_usba_udc.h
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@ -0,0 +1,326 @@
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/*
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* Register definition for Atmel USBA high speed USB device controller
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* [Original from Linux kernel: drivers/usb/gadget/atmel_usba_udc.h]
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*
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* Copyright (C) 2005-2013 Atmel Corporation
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* Bo Shen <voice.shen@atmel.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __LINUX_USB_GADGET_USBA_UDC_H__
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#define __LINUX_USB_GADGET_USBA_UDC_H__
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/* USB register offsets */
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#define USBA_CTRL 0x0000
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#define USBA_FNUM 0x0004
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#define USBA_INT_ENB 0x0010
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#define USBA_INT_STA 0x0014
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#define USBA_INT_CLR 0x0018
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#define USBA_EPT_RST 0x001c
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#define USBA_TST 0x00e0
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/* USB endpoint register offsets */
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#define USBA_EPT_CFG 0x0000
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#define USBA_EPT_CTL_ENB 0x0004
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#define USBA_EPT_CTL_DIS 0x0008
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#define USBA_EPT_CTL 0x000c
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#define USBA_EPT_SET_STA 0x0014
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#define USBA_EPT_CLR_STA 0x0018
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#define USBA_EPT_STA 0x001c
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/* USB DMA register offsets */
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#define USBA_DMA_NXT_DSC 0x0000
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#define USBA_DMA_ADDRESS 0x0004
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#define USBA_DMA_CONTROL 0x0008
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#define USBA_DMA_STATUS 0x000c
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/* Bitfields in CTRL */
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#define USBA_DEV_ADDR_OFFSET 0
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#define USBA_DEV_ADDR_SIZE 7
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#define USBA_FADDR_EN (1 << 7)
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#define USBA_EN_USBA (1 << 8)
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#define USBA_DETACH (1 << 9)
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#define USBA_REMOTE_WAKE_UP (1 << 10)
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#define USBA_PULLD_DIS (1 << 11)
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#if defined(CONFIG_AVR32)
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#define USBA_ENABLE_MASK USBA_EN_USBA
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#define USBA_DISABLE_MASK 0
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#elif defined(CONFIG_AT91FAMILY)
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#define USBA_ENABLE_MASK (USBA_EN_USBA | USBA_PULLD_DIS)
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#define USBA_DISABLE_MASK USBA_DETACH
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#endif /* CONFIG_ARCH_AT91 */
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/* Bitfields in FNUM */
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#define USBA_MICRO_FRAME_NUM_OFFSET 0
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#define USBA_MICRO_FRAME_NUM_SIZE 3
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#define USBA_FRAME_NUMBER_OFFSET 3
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#define USBA_FRAME_NUMBER_SIZE 11
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#define USBA_FRAME_NUM_ERROR (1 << 31)
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/* Bitfields in INT_ENB/INT_STA/INT_CLR */
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#define USBA_HIGH_SPEED (1 << 0)
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#define USBA_DET_SUSPEND (1 << 1)
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#define USBA_MICRO_SOF (1 << 2)
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#define USBA_SOF (1 << 3)
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#define USBA_END_OF_RESET (1 << 4)
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#define USBA_WAKE_UP (1 << 5)
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#define USBA_END_OF_RESUME (1 << 6)
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#define USBA_UPSTREAM_RESUME (1 << 7)
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#define USBA_EPT_INT_OFFSET 8
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#define USBA_EPT_INT_SIZE 16
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#define USBA_DMA_INT_OFFSET 24
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#define USBA_DMA_INT_SIZE 8
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/* Bitfields in EPT_RST */
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#define USBA_RST_OFFSET 0
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#define USBA_RST_SIZE 16
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/* Bitfields in USBA_TST */
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#define USBA_SPEED_CFG_OFFSET 0
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#define USBA_SPEED_CFG_SIZE 2
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#define USBA_TST_J_MODE (1 << 2)
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#define USBA_TST_K_MODE (1 << 3)
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#define USBA_TST_PKT_MODE (1 << 4)
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#define USBA_OPMODE2 (1 << 5)
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/* Bitfields in EPT_CFG */
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#define USBA_EPT_SIZE_OFFSET 0
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#define USBA_EPT_SIZE_SIZE 3
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#define USBA_EPT_DIR_IN (1 << 3)
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#define USBA_EPT_TYPE_OFFSET 4
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#define USBA_EPT_TYPE_SIZE 2
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#define USBA_BK_NUMBER_OFFSET 6
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#define USBA_BK_NUMBER_SIZE 2
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#define USBA_NB_TRANS_OFFSET 8
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#define USBA_NB_TRANS_SIZE 2
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#define USBA_EPT_MAPPED (1 << 31)
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/* Bitfields in EPT_CTL/EPT_CTL_ENB/EPT_CTL_DIS */
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#define USBA_EPT_ENABLE (1 << 0)
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#define USBA_AUTO_VALID (1 << 1)
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#define USBA_INTDIS_DMA (1 << 3)
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#define USBA_NYET_DIS (1 << 4)
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#define USBA_DATAX_RX (1 << 6)
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#define USBA_MDATA_RX (1 << 7)
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/* Bits 8-15 and 31 enable interrupts for respective bits in EPT_STA */
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#define USBA_BUSY_BANK_IE (1 << 18)
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/* Bitfields in EPT_SET_STA/EPT_CLR_STA/EPT_STA */
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#define USBA_FORCE_STALL (1 << 5)
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#define USBA_TOGGLE_CLR (1 << 6)
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#define USBA_TOGGLE_SEQ_OFFSET 6
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#define USBA_TOGGLE_SEQ_SIZE 2
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#define USBA_ERR_OVFLW (1 << 8)
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#define USBA_RX_BK_RDY (1 << 9)
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#define USBA_KILL_BANK (1 << 9)
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#define USBA_TX_COMPLETE (1 << 10)
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#define USBA_TX_PK_RDY (1 << 11)
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#define USBA_ISO_ERR_TRANS (1 << 11)
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#define USBA_RX_SETUP (1 << 12)
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#define USBA_ISO_ERR_FLOW (1 << 12)
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#define USBA_STALL_SENT (1 << 13)
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#define USBA_ISO_ERR_CRC (1 << 13)
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#define USBA_ISO_ERR_NBTRANS (1 << 13)
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#define USBA_NAK_IN (1 << 14)
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#define USBA_ISO_ERR_FLUSH (1 << 14)
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#define USBA_NAK_OUT (1 << 15)
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#define USBA_CURRENT_BANK_OFFSET 16
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#define USBA_CURRENT_BANK_SIZE 2
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#define USBA_BUSY_BANKS_OFFSET 18
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#define USBA_BUSY_BANKS_SIZE 2
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#define USBA_BYTE_COUNT_OFFSET 20
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#define USBA_BYTE_COUNT_SIZE 11
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#define USBA_SHORT_PACKET (1 << 31)
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/* Bitfields in DMA_CONTROL */
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#define USBA_DMA_CH_EN (1 << 0)
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#define USBA_DMA_LINK (1 << 1)
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#define USBA_DMA_END_TR_EN (1 << 2)
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#define USBA_DMA_END_BUF_EN (1 << 3)
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#define USBA_DMA_END_TR_IE (1 << 4)
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#define USBA_DMA_END_BUF_IE (1 << 5)
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#define USBA_DMA_DESC_LOAD_IE (1 << 6)
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#define USBA_DMA_BURST_LOCK (1 << 7)
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#define USBA_DMA_BUF_LEN_OFFSET 16
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#define USBA_DMA_BUF_LEN_SIZE 16
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/* Bitfields in DMA_STATUS */
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#define USBA_DMA_CH_ACTIVE (1 << 1)
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#define USBA_DMA_END_TR_ST (1 << 4)
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#define USBA_DMA_END_BUF_ST (1 << 5)
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#define USBA_DMA_DESC_LOAD_ST (1 << 6)
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/* Constants for SPEED_CFG */
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#define USBA_SPEED_CFG_NORMAL 0
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#define USBA_SPEED_CFG_FORCE_HIGH 2
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#define USBA_SPEED_CFG_FORCE_FULL 3
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/* Constants for EPT_SIZE */
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#define USBA_EPT_SIZE_8 0
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#define USBA_EPT_SIZE_16 1
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#define USBA_EPT_SIZE_32 2
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#define USBA_EPT_SIZE_64 3
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#define USBA_EPT_SIZE_128 4
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#define USBA_EPT_SIZE_256 5
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#define USBA_EPT_SIZE_512 6
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#define USBA_EPT_SIZE_1024 7
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/* Constants for EPT_TYPE */
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#define USBA_EPT_TYPE_CONTROL 0
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#define USBA_EPT_TYPE_ISO 1
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#define USBA_EPT_TYPE_BULK 2
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#define USBA_EPT_TYPE_INT 3
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/* Constants for BK_NUMBER */
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#define USBA_BK_NUMBER_ZERO 0
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#define USBA_BK_NUMBER_ONE 1
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#define USBA_BK_NUMBER_DOUBLE 2
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#define USBA_BK_NUMBER_TRIPLE 3
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/* Bit manipulation macros */
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#define USBA_BF(name, value) \
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(((value) & ((1 << USBA_##name##_SIZE) - 1)) \
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<< USBA_##name##_OFFSET)
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#define USBA_BFEXT(name, value) \
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(((value) >> USBA_##name##_OFFSET) \
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& ((1 << USBA_##name##_SIZE) - 1))
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#define USBA_BFINS(name, value, old) \
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(((old) & ~(((1 << USBA_##name##_SIZE) - 1) \
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<< USBA_##name##_OFFSET)) \
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| USBA_BF(name, value))
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/* Register access macros */
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#define usba_readl(udc, reg) \
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__raw_readl((udc)->regs + USBA_##reg)
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#define usba_writel(udc, reg, value) \
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__raw_writel((value), (udc)->regs + USBA_##reg)
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#define usba_ep_readl(ep, reg) \
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__raw_readl((ep)->ep_regs + USBA_EPT_##reg)
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#define usba_ep_writel(ep, reg, value) \
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__raw_writel((value), (ep)->ep_regs + USBA_EPT_##reg)
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#define usba_dma_readl(ep, reg) \
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__raw_readl((ep)->dma_regs + USBA_DMA_##reg)
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#define usba_dma_writel(ep, reg, value) \
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__raw_writel((value), (ep)->dma_regs + USBA_DMA_##reg)
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/* Calculate base address for a given endpoint or DMA controller */
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#define USBA_EPT_BASE(x) (0x100 + (x) * 0x20)
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#define USBA_DMA_BASE(x) (0x300 + (x) * 0x10)
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#define USBA_FIFO_BASE(x) ((x) << 16)
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/* Synth parameters */
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#define USBA_NR_ENDPOINTS 7
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#define EP0_FIFO_SIZE 64
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#define EP0_EPT_SIZE USBA_EPT_SIZE_64
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#define EP0_NR_BANKS 1
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#define DBG_ERR 0x0001 /* report all error returns */
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#define DBG_HW 0x0002 /* debug hardware initialization */
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#define DBG_GADGET 0x0004 /* calls to/from gadget driver */
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#define DBG_INT 0x0008 /* interrupts */
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#define DBG_BUS 0x0010 /* report changes in bus state */
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#define DBG_QUEUE 0x0020 /* debug request queue processing */
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#define DBG_FIFO 0x0040 /* debug FIFO contents */
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#define DBG_DMA 0x0080 /* debug DMA handling */
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#define DBG_REQ 0x0100 /* print out queued request length */
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#define DBG_ALL 0xffff
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#define DBG_NONE 0x0000
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#define DEBUG_LEVEL (DBG_ERR)
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#define DBG(level, fmt, ...) \
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do { \
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if ((level) & DEBUG_LEVEL) \
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debug("udc: " fmt, ## __VA_ARGS__); \
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} while (0)
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enum usba_ctrl_state {
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WAIT_FOR_SETUP,
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DATA_STAGE_IN,
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DATA_STAGE_OUT,
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STATUS_STAGE_IN,
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STATUS_STAGE_OUT,
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STATUS_STAGE_ADDR,
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STATUS_STAGE_TEST,
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};
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struct usba_dma_desc {
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dma_addr_t next;
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dma_addr_t addr;
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u32 ctrl;
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};
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struct usba_ep {
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int state;
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void *ep_regs;
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void *dma_regs;
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void *fifo;
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struct usb_ep ep;
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struct usba_udc *udc;
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struct list_head queue;
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u16 fifo_size;
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u8 nr_banks;
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u8 index;
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unsigned int can_dma:1;
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unsigned int can_isoc:1;
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unsigned int is_isoc:1;
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unsigned int is_in:1;
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const struct usb_endpoint_descriptor *desc;
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};
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struct usba_request {
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struct usb_request req;
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struct list_head queue;
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u32 ctrl;
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unsigned int submitted:1;
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unsigned int last_transaction:1;
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unsigned int using_dma:1;
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unsigned int mapped:1;
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};
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struct usba_udc {
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void *regs;
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void *fifo;
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struct usb_gadget gadget;
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struct usb_gadget_driver *driver;
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struct platform_device *pdev;
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int irq;
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int vbus_pin;
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int vbus_pin_inverted;
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int num_ep;
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struct usba_ep *usba_ep;
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u16 devstatus;
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u16 test_mode;
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int vbus_prev;
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};
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static inline struct usba_ep *to_usba_ep(struct usb_ep *ep)
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{
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return container_of(ep, struct usba_ep, ep);
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}
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static inline struct usba_request *to_usba_req(struct usb_request *req)
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{
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return container_of(req, struct usba_request, req);
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}
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static inline struct usba_udc *to_usba_udc(struct usb_gadget *gadget)
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{
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return container_of(gadget, struct usba_udc, gadget);
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}
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#define ep_is_control(ep) ((ep)->index == 0)
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#define ep_is_idle(ep) ((ep)->state == EP_STATE_IDLE)
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#endif /* __LINUX_USB_GADGET_USBA_UDC_H */
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26
include/linux/usb/atmel_usba_udc.h
Normal file
26
include/linux/usb/atmel_usba_udc.h
Normal file
@ -0,0 +1,26 @@
|
||||
/*
|
||||
* Platform data definitions for Atmel USBA gadget driver
|
||||
* [Original from Linux kernel: include/linux/usb/atmel_usba_udc.h]
|
||||
*
|
||||
* SPDX-License-Identifier: GPL-2.0+
|
||||
*/
|
||||
#ifndef __LINUX_USB_USBA_H__
|
||||
#define __LINUX_USB_USBA_H__
|
||||
|
||||
struct usba_ep_data {
|
||||
char *name;
|
||||
int index;
|
||||
int fifo_size;
|
||||
int nr_banks;
|
||||
int can_dma;
|
||||
int can_isoc;
|
||||
};
|
||||
|
||||
struct usba_platform_data {
|
||||
int num_ep;
|
||||
struct usba_ep_data *ep;
|
||||
};
|
||||
|
||||
extern int usba_udc_probe(struct usba_platform_data *pdata);
|
||||
|
||||
#endif /* __LINUX_USB_USBA_H */
|
||||
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