sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

SAM4E: Add USB full speed device (UDP) driver

Browse Source
This commit is contained in:
Gregory Nutt 2014-03-17 12:37:55 -06:00
parent 1cde363251
commit e869de4272
7 changed files with 4067 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
ChangeLog
View File

@ -7004,3 +7004,7 @@
Jason Jiang (2014-3-15).
7.2 2014-xx-xx Gregory Nutt <gnutt@nuttx.org>
* arch/arm/src/sam34/sam_udp.c and .h: Add a USB full speed device
driver (UDP) for the SAM4E (2014-3-17).

2
arch/arm/src/sam34/chip/sam_udp.h
View File

@ -179,6 +179,7 @@
* Status, and UDP Interrupt Clear Registers.
*/
#define UDP_INT_EP_MASK (0x000000ff)
#define UDP_INT_EP(n) (1 << (n))
# define UDP_INT_EP0 (1 << 0) /* Bit 0: Endpoint 0 Interrupt (Not ICR) */
# define UDP_INT_EP1 (1 << 1) /* Bit 1: Endpoint 1 Interrupt (Not ICR) */
@ -220,6 +221,7 @@
#define UDPEP_CSR_TXPKTRDY (1 << 4) /* Bit 4: Transmit Packet Ready */
#define UDPEP_CSR_FORCESTALL (1 << 5) /* Bit 5: Force Stall */
#define UDPEP_CSR_RXDATABK1 (1 << 6) /* Bit 6: Receive Data Bank 1 */
#define UDPEP_CSR_DIR_SHIFT (7) /* Bit 7: Transfer Direction */
#define UDPEP_CSR_DIR (1 << 7) /* Bit 7: Transfer Direction */
#define UDPEP_CSR_EPTYPE_SHIFT (8) /* Bit 8-10: Endpoint type */
#define UDPEP_CSR_EPTYPE_MASK (7 << UDPEP_CSR_EPTYPE_SHIFT)

2
arch/arm/src/sam34/sam_clockconfig.c
View File

@ -257,7 +257,7 @@ static inline void sam_pmcsetup(void)
regval = (BOARD_PMC_USBS | BOARD_PMC_USBDIV);
putreg32(regval, SAM_PMC_USB);
/* Set the UDP bit in the SCER1 register to enable the USB clock output */
/* Set the UDP bit in the SCER register to enable the USB clock output */
regval = getreg32(SAM_PMC_SCER);
regval |= PMC_UDP;

3953
arch/arm/src/sam34/sam_udp.c Normal file
View File

File diff suppressed because it is too large Load Diff

92
arch/arm/src/sam34/sam_udp.h Normal file
View File

@ -0,0 +1,92 @@
/************************************************************************************
* arch/arm/src/sam34/sam_udphs.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAM34_SAM_UDP_H
#define __ARCH_ARM_SRC_SAM34_SAM_UDP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <nuttx/usb/usbdev.h>
#include <stdint.h>
#include "chip.h"
#include "chip/sam_udp.h"
/************************************************************************************
* Public Functions
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/************************************************************************************
* Name: sam_udp_suspend
*
* Description:
* Board logic must provide the sam_udp_suspend logic if the UDP driver is
* used. This function is called whenever the USB enters or leaves suspend mode.
*
* When 'resume' is false, this function call provides an opportunity to perform
* board-specific power-saving actions so that less power is consumed while the
* USB is suspended.
*
* Certain power-saving operations are performed by the UDP driver when it enters
* suspend mode: The USB device peripheral clocks are be switched off. MCK and
* UDPCK are switched off and the USB transceiver is disabled.
*
* When 'resume' is true, normal clocking and operations must all be restored.
*
************************************************************************************/
void sam_udp_suspend(FAR struct usbdev_s *dev, bool resume);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_SAM34_SAM_UDP_H */

4
configs/sam4e-ek/include/board.h
View File

@ -108,8 +108,8 @@
* PMC USB register to provide the PLL clock. So in order to use the USB
* feature, the PLL output must be a multiple of 48MHz.
*
* PLLACK = 240MHz, USBDIV=5, USB_48M = 240 MHz / 5 = 48MHz
* PLLACK = 192MHz, USBDIV=4, USB_48M = 192 MHz / 4 = 48MHz
* PLLACK = 240MHz, USBDIV=4, USB_48M = 240 MHz / (4 + 1) = 48MHz
* PLLACK = 192MHz, USBDIV=5, USB_48M = 192 MHz / (3 + 1) = 48MHz
*/
#define BOARD_PMC_USBS (0)

18
configs/sam4e-ek/src/sam_usbdev.c
View File

@ -92,17 +92,25 @@ int sam_usbpullup(FAR struct usbdev_s *dev, bool enable)
}
/************************************************************************************
* Name: sam_usbsuspend
* Name: sam_udp_suspend
*
* Description:
* Board logic must provide the sam_usbsuspend logic if the USBDEV driver is
* Board logic must provide the sam_udp_suspend logic if the UDP driver is
* used. This function is called whenever the USB enters or leaves suspend mode.
* This is an opportunity for the board logic to shutdown clocks, power, etc.
* while the USB is suspended.
*
* When 'resume' is false, this function call provides an opportunity to perform
* board-specific power-saving actions so that less power is consumed while the
* USB is suspended.
*
* Certain power-saving operations are performed by the UDP driver when it enters
* suspend mode: The USB device peripheral clocks are be switched off. MCK and
* UDPCK are switched off and the USB transceiver is disabled.
*
* When 'resume' is true, normal clocking and operations must all be restored.
*
************************************************************************************/
void sam_usbsuspend(FAR struct usbdev_s *dev, bool resume)
void sam_udp_suspend(FAR struct usbdev_s *dev, bool resume)
{
ulldbg("resume: %d\n", resume);
}