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Update parport to return errors. 

Change-Id: I6c6bf75809cd3222c7680e10ac6ee6073050ed07
This commit is contained in:
Tim Newsome 2018-01-22 14:33:21 -08:00
parent 9a817e7c1c
commit 26fadc7ef7
1 changed files with 20 additions and 10 deletions
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30
src/jtag/drivers/parport.c
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@ -116,7 +116,7 @@ static unsigned long dataport;
static unsigned long statusport;
#endif
static int parport_read(void)
static bb_value_t parport_read(void)
{
int data = 0;
@ -127,9 +127,9 @@ static int parport_read(void)
#endif
if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK)
return 1;
return BB_HIGH;
else
return 0;
return BB_LOW;
}
static inline void parport_write_data(void)
@ -148,7 +148,7 @@ static inline void parport_write_data(void)
#endif
}
static void parport_write(int tck, int tms, int tdi)
static int parport_write(int tck, int tms, int tdi)
{
int i = wait_states + 1;
@ -169,10 +169,12 @@ static void parport_write(int tck, int tms, int tdi)
while (i-- > 0)
parport_write_data();
return ERROR_OK;
}
/* (1) assert or (0) deassert reset lines */
static void parport_reset(int trst, int srst)
static int parport_reset(int trst, int srst)
{
LOG_DEBUG("trst: %i, srst: %i", trst, srst);
@ -187,10 +189,12 @@ static void parport_reset(int trst, int srst)
dataport_value &= ~cable->SRST_MASK;
parport_write_data();
return ERROR_OK;
}
/* turn LED on parport adapter on (1) or off (0) */
static void parport_led(int on)
static int parport_led(int on)
{
if (on)
dataport_value |= cable->LED_MASK;
@ -198,6 +202,8 @@ static void parport_led(int on)
dataport_value &= ~cable->LED_MASK;
parport_write_data();
return ERROR_OK;
}
static int parport_speed(int speed)
@ -365,9 +371,12 @@ static int parport_init(void)
#endif /* PARPORT_USE_PPDEV */
parport_reset(0, 0);
parport_write(0, 0, 0);
parport_led(1);
if (parport_reset(0, 0) != ERROR_OK)
return ERROR_FAIL;
if (parport_write(0, 0, 0) != ERROR_OK)
return ERROR_FAIL;
if (parport_led(1) != ERROR_OK)
return ERROR_FAIL;
bitbang_interface = &parport_bitbang;
@ -376,7 +385,8 @@ static int parport_init(void)
static int parport_quit(void)
{
parport_led(0);
if (parport_led(0) != ERROR_OK)
return ERROR_FAIL;
if (parport_exit) {
dataport_value = cable->PORT_EXIT;