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uart: cleanup and bring inline with standard

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Removed mraa_setup_uart from core mraa.c moved logic within init
function
Add more syslog output for easier debugging.

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2015-01-20 14:44:28 +00:00
parent 20d229168b
commit ed4c68eba1
3 changed files with 42 additions and 41 deletions
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46
src/uart/uart.c
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@@ -33,15 +33,53 @@
mraa_uart_context
mraa_uart_init(int index)
{
if (advance_func->uart_init_pre != NULL) {
if (advance_func->uart_init_pre(index) != MRAA_SUCCESS)
return NULL;
if (plat == NULL) {
syslog(LOG_ERR, "uart: platform not initialised");
return NULL;
}
if (mraa_setup_uart(index) != MRAA_SUCCESS)
if (advance_func->uart_init_pre != NULL) {
if (advance_func->uart_init_pre(index) != MRAA_SUCCESS) {
syslog(LOG_ERR, "uart: failure in pre-init platform hook");
return NULL;
}
}
if (plat->uart_dev_count == 0) {
syslog(LOG_ERR, "uart: platform has no UARTs defined");
return NULL;
}
if (plat->uart_dev_count <= index) {
syslog(LOG_ERR, "uart: platform has only %i", plat->uart_dev_count);
return NULL;
}
int pos = plat->uart_dev[index].rx;
if (pos >= 0) {
if (plat->pins[pos].uart.mux_total > 0) {
if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS) {
syslog(LOG_ERR, "uart: failed to setup muxes for RX pin");
return NULL;
}
}
}
if (pos >= 0) {
pos = plat->uart_dev[index].tx;
if (plat->pins[pos].uart.mux_total > 0) {
if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS) {
syslog(LOG_ERR, "uart: failed to setup muxes for TX pin");
return NULL;
}
}
}
mraa_uart_context dev = (mraa_uart_context) malloc(sizeof(struct _uart));
if (dev == NULL) {
syslog(LOG_CRIT, "uart: Failed to allocate memory for context");
return NULL;
}
memset(dev, 0, sizeof(struct _uart));
dev->index = index;