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-rw-r--r--c/src/lib/libbsp/m68k/mcf5206elite/i2c/i2c.c320
1 files changed, 0 insertions, 320 deletions
diff --git a/c/src/lib/libbsp/m68k/mcf5206elite/i2c/i2c.c b/c/src/lib/libbsp/m68k/mcf5206elite/i2c/i2c.c
deleted file mode 100644
index f77fe1ebcc..0000000000
--- a/c/src/lib/libbsp/m68k/mcf5206elite/i2c/i2c.c
+++ /dev/null
@@ -1,320 +0,0 @@
-/* I2C bus common (driver-independent) primitives implementation.
- *
- * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia
- * Author: Victor V. Vengerov <vvv@oktet.ru>
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- *
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <bsp.h>
-#include <i2c.h>
-#include <rtems/score/sysstate.h>
-
-/* i2c_transfer_sema_done_func --
- * This function called from I2C driver layer to signal that I2C
- * transfer is finished. This function resumes of task execution which
- * has invoked blocking I2C primitive.
- *
- * PARAMETERS:
- * arg - done function argument; it is RTEMS semaphore ID.
- */
-static void
-i2c_transfer_sema_done_func(void * arg)
-{
- rtems_id sema = *(rtems_id *)arg;
- rtems_semaphore_release(sema);
-}
-
-/* i2c_transfer_poll_done_func --
- * This function called from I2C driver layer to signal that I2C
- * transfer is finished. This function set the flag polled by waiting
- * function.
- *
- * PARAMETERS:
- * arg - done function argument; address of poll_done_flag
- */
-static void
-i2c_transfer_poll_done_func(void *arg)
-{
- bool *poll_done_flag = (bool *)arg;
- *poll_done_flag = true;
-}
-
-/* i2c_transfer_wait_sema --
- * Initiate I2C bus transfer and block on temporary created semaphore
- * until this transfer will be finished.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * msg - pointer to transfer messages array
- * nmsg - number of messages in transfer
- *
- * RETURNS:
- * RTEMS_SUCCESSFUL, if tranfer finished successfully,
- * or RTEMS status code if semaphore operations has failed.
- */
-static i2c_message_status
-i2c_transfer_wait_sema(i2c_bus_number bus, i2c_message *msg, int nmsg)
-{
- rtems_status_code sc;
- rtems_id sema;
- sc = rtems_semaphore_create(
- rtems_build_name('I', '2', 'C', 'S'),
- 0,
- RTEMS_COUNTING_SEMAPHORE | RTEMS_NO_INHERIT_PRIORITY |
- RTEMS_NO_PRIORITY_CEILING | RTEMS_LOCAL,
- 0,
- &sema
- );
- if (sc != RTEMS_SUCCESSFUL)
- return I2C_RESOURCE_NOT_AVAILABLE;
- sc = i2c_transfer(bus, nmsg, msg,
- i2c_transfer_sema_done_func, &sema);
- if (sc != RTEMS_SUCCESSFUL)
- {
- rtems_semaphore_delete(sema);
- return sc;
- }
- rtems_semaphore_obtain(sema, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
- sc = rtems_semaphore_delete(sema);
- return sc;
-}
-
-/* i2c_transfer_wait_poll --
- * Initiate I2C bus transfer and wait by poll transaction done flag until
- * this transfer will be finished.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * msg - pointer to transfer messages array
- * nmsg - number of messages in transfer
- *
- * RETURNS:
- * RTEMS_SUCCESSFUL
- */
-static rtems_status_code
-i2c_transfer_wait_poll(i2c_bus_number bus, i2c_message *msg, int nmsg)
-{
- /*
- * this looks nasty, but is correct:
- * we wait in this function, until the poll_done_flag is
- * set deep inside the i2c_poll() function
- */
- volatile bool poll_done_flag;
- rtems_status_code sc;
- poll_done_flag = false;
- sc = i2c_transfer(bus, nmsg, msg,
- i2c_transfer_poll_done_func,(void *)&poll_done_flag);
- if (sc != RTEMS_SUCCESSFUL)
- return sc;
- while (poll_done_flag == false)
- {
- i2c_poll(bus);
- }
- return RTEMS_SUCCESSFUL;
-}
-
-/* i2c_transfer_wait --
- * Initiate I2C bus transfer and block until this transfer will be
- * finished. This function wait the semaphore if system in
- * SYSTEM_STATE_UP state, or poll done flag in other states.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * msg - pointer to transfer messages array
- * nmsg - number of messages in transfer
- *
- * RETURNS:
- * I2C_SUCCESSFUL, if tranfer finished successfully,
- * I2C_RESOURCE_NOT_AVAILABLE, if semaphore operations has failed,
- * value of status field of first error-finished message in transfer,
- * if something wrong.
- */
-i2c_message_status
-i2c_transfer_wait(i2c_bus_number bus, i2c_message *msg, int nmsg)
-{
- rtems_status_code sc;
- int i;
- if (_System_state_Is_up(_System_state_Get()))
- {
- sc = i2c_transfer_wait_sema(bus, msg, nmsg);
- }
- else
- {
- sc = i2c_transfer_wait_poll(bus, msg, nmsg);
- }
-
- if (sc != RTEMS_SUCCESSFUL)
- return I2C_RESOURCE_NOT_AVAILABLE;
-
- for (i = 0; i < nmsg; i++)
- {
- if (msg[i].status != I2C_SUCCESSFUL)
- {
- return msg[i].status;
- }
- }
- return I2C_SUCCESSFUL;
-}
-
-/* i2c_write --
- * Send single message over specified I2C bus to addressed device and
- * wait while transfer is finished.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * addr - address of I2C device
- * buf - data to be sent to device
- * size - data buffer size
- *
- * RETURNS:
- * transfer status
- */
-i2c_message_status
-i2c_write(i2c_bus_number bus, i2c_address addr, void *buf, int size)
-{
- i2c_message msg;
- msg.addr = addr;
- msg.flags = I2C_MSG_WR;
- if (addr > 0xff)
- msg.flags |= I2C_MSG_ADDR_10;
- msg.status = 0;
- msg.len = size;
- msg.buf = buf;
- return i2c_transfer_wait(bus, &msg, 1);
-}
-
-/* i2c_wrbyte --
- * Send single one-byte long message over specified I2C bus to
- * addressed device and wait while transfer is finished.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * addr - address of I2C device
- * cmd - byte message to be sent to device
- *
- * RETURNS:
- * transfer status
- */
-i2c_message_status
-i2c_wrbyte(i2c_bus_number bus, i2c_address addr, uint8_t cmd)
-{
- i2c_message msg;
- uint8_t data = cmd;
- msg.addr = addr;
- msg.flags = I2C_MSG_WR;
- if (addr > 0xff)
- msg.flags |= I2C_MSG_ADDR_10;
- msg.status = 0;
- msg.len = sizeof(data);
- msg.buf = &data;
- return i2c_transfer_wait(bus, &msg, 1);
-}
-
-/* i2c_read --
- * receive single message over specified I2C bus from addressed device.
- * This call will wait while transfer is finished.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * addr - address of I2C device
- * buf - buffer for received message
- * size - receive buffer size
- *
- * RETURNS:
- * transfer status
- */
-i2c_message_status
-i2c_read(i2c_bus_number bus, i2c_address addr, void *buf, int size)
-{
- i2c_message msg;
- msg.addr = addr;
- msg.flags = 0;
- if (addr > 0xff)
- msg.flags |= I2C_MSG_ADDR_10;
- msg.status = 0;
- msg.len = size;
- msg.buf = buf;
- return i2c_transfer_wait(bus, &msg, 1);
-}
-
-/* i2c_wrrd --
- * Send message over I2C bus to specified device and receive message
- * from the same device during single transfer.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * addr - address of I2C device
- * bufw - data to be sent to device
- * sizew - send data buffer size
- * bufr - buffer for received message
- * sizer - receive buffer size
- *
- * RETURNS:
- * transfer status
- */
-i2c_message_status
-i2c_wrrd(i2c_bus_number bus, i2c_address addr, void *bufw, int sizew,
- void *bufr, int sizer)
-{
- i2c_message msg[2];
- msg[0].addr = addr;
- msg[0].flags = I2C_MSG_WR | I2C_MSG_ERRSKIP;
- if (addr > 0xff)
- msg[0].flags |= I2C_MSG_ADDR_10;
- msg[0].status = 0;
- msg[0].len = sizew;
- msg[0].buf = bufw;
-
- msg[1].addr = addr;
- msg[1].flags = 0;
- if (addr > 0xff)
- msg[1].flags |= I2C_MSG_ADDR_10;
- msg[1].status = 0;
- msg[1].len = sizer;
- msg[1].buf = bufr;
-
- return i2c_transfer_wait(bus, msg, 2);
-}
-
-/* i2c_wbrd --
- * Send one-byte message over I2C bus to specified device and receive
- * message from the same device during single transfer.
- *
- * PARAMETERS:
- * bus - I2C bus number
- * addr - address of I2C device
- * cmd - one-byte message to be sent over I2C bus
- * bufr - buffer for received message
- * sizer - receive buffer size
- *
- * RETURNS:
- * transfer status
- */
-i2c_message_status
-i2c_wbrd(i2c_bus_number bus, i2c_address addr, uint8_t cmd,
- void *bufr, int sizer)
-{
- i2c_message msg[2];
- uint8_t bufw = cmd;
- msg[0].addr = addr;
- msg[0].flags = I2C_MSG_WR | I2C_MSG_ERRSKIP;
- if (addr > 0xff)
- msg[0].flags |= I2C_MSG_ADDR_10;
- msg[0].status = 0;
- msg[0].len = sizeof(bufw);
- msg[0].buf = &bufw;
-
- msg[1].addr = addr;
- msg[1].flags = I2C_MSG_ERRSKIP;
- if (addr > 0xff)
- msg[1].flags |= I2C_MSG_ADDR_10;
- msg[1].status = 0;
- msg[1].len = sizer;
- msg[1].buf = bufr;
-
- return i2c_transfer_wait(bus, msg, 2);
-}
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