mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-15 12:38:11 +00:00
145 lines
4.7 KiB
C
Executable File
145 lines
4.7 KiB
C
Executable File
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* @file AT91SAM7/at91sam7_mii.c
|
|
* @brief AT91SAM7 low level MII driver code.
|
|
*
|
|
* @addtogroup AT91SAM7_MII
|
|
* @{
|
|
*/
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
#include "at91sam7_mii.h"
|
|
|
|
#if HAL_USE_MAC || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local functions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver interrupt handlers. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported functions. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Low level MII driver initialization.
|
|
*
|
|
* @notapi
|
|
*/
|
|
void miiInit(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Resets a PHY device.
|
|
*
|
|
* @param[in] macp pointer to the @p MACDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
void miiReset(MACDriver *macp) {
|
|
|
|
(void)macp;
|
|
|
|
/*
|
|
* Disables the pullups on all the pins that are latched on reset by the PHY.
|
|
*/
|
|
AT91C_BASE_PIOB->PIO_PPUDR = PHY_LATCHED_PINS;
|
|
|
|
#ifdef PIOB_PHY_PD_MASK
|
|
/*
|
|
* PHY power control.
|
|
*/
|
|
AT91C_BASE_PIOB->PIO_OER = PIOB_PHY_PD_MASK; /* Becomes an output. */
|
|
AT91C_BASE_PIOB->PIO_PPUDR = PIOB_PHY_PD_MASK;/* Default pullup disabled. */
|
|
#if (PHY_HARDWARE == PHY_DAVICOM_9161)
|
|
AT91C_BASE_PIOB->PIO_CODR = PIOB_PHY_PD_MASK; /* Output to low level. */
|
|
#else
|
|
AT91C_BASE_PIOB->PIO_SODR = PIOB_PHY_PD_MASK; /* Output to high level. */
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* PHY reset by pulsing the NRST pin.
|
|
*/
|
|
AT91C_BASE_RSTC->RSTC_RMR = 0xA5000100;
|
|
AT91C_BASE_RSTC->RSTC_RCR = 0xA5000000 | AT91C_RSTC_EXTRST;
|
|
while (!(AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_NRSTL))
|
|
;
|
|
}
|
|
|
|
/**
|
|
* @brief Reads a PHY register through the MII interface.
|
|
*
|
|
* @param[in] macp pointer to the @p MACDriver object
|
|
* @param[in] addr the register address
|
|
* @return The register value.
|
|
*
|
|
* @notapi
|
|
*/
|
|
phyreg_t miiGet(MACDriver *macp, phyaddr_t addr) {
|
|
|
|
(void)macp;
|
|
AT91C_BASE_EMAC->EMAC_MAN = (0b01 << 30) | /* SOF */
|
|
(0b10 << 28) | /* RW */
|
|
(PHY_ADDRESS << 23) | /* PHYA */
|
|
(addr << 18) | /* REGA */
|
|
(0b10 << 16); /* CODE */
|
|
while (!( AT91C_BASE_EMAC->EMAC_NSR & AT91C_EMAC_IDLE))
|
|
;
|
|
return (phyreg_t)(AT91C_BASE_EMAC->EMAC_MAN & 0xFFFF);
|
|
}
|
|
|
|
/**
|
|
* @brief Writes a PHY register through the MII interface.
|
|
*
|
|
* @param[in] macp pointer to the @p MACDriver object
|
|
* @param[in] addr the register address
|
|
* @param[in] value the new register value
|
|
*
|
|
* @notapi
|
|
*/
|
|
void miiPut(MACDriver *macp, phyaddr_t addr, phyreg_t value) {
|
|
|
|
(void)macp;
|
|
AT91C_BASE_EMAC->EMAC_MAN = (0b01 << 30) | /* SOF */
|
|
(0b01 << 28) | /* RW */
|
|
(PHY_ADDRESS << 23) | /* PHYA */
|
|
(addr << 18) | /* REGA */
|
|
(0b10 << 16) | /* CODE */
|
|
value;
|
|
while (!( AT91C_BASE_EMAC->EMAC_NSR & AT91C_EMAC_IDLE))
|
|
;
|
|
}
|
|
|
|
#endif /* HAL_USE_MAC */
|
|
|
|
/** @} */
|