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serial: uart_liteuart: Use LiteX HAL

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Use LiteX HAL functions instead of `sys_read*` or `sys_write*`
functions.
They use them inside, but choose which one to use according to
configured CSR data width.

Signed-off-by: Michal Sieron <msieron@internships.antmicro.com>
This commit is contained in:
Michal Sieron 2022-04-08 14:57:36 +02:00 • committed by Carles Cufí
commit 34a4b2b916
1 changed files with 23 additions and 23 deletions
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46
drivers/serial/uart_liteuart.c
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@ -56,10 +56,10 @@ struct uart_liteuart_data {
static void uart_liteuart_poll_out(const struct device *dev, unsigned char c) static void uart_liteuart_poll_out(const struct device *dev, unsigned char c)
{ {
/* wait for space */ /* wait for space */
while (sys_read8(UART_TXFULL)) { while (litex_read8(UART_TXFULL)) {
} }
sys_write8(c, UART_RXTX); litex_write8(c, UART_RXTX);
} }
/** /**
@ -72,13 +72,13 @@ static void uart_liteuart_poll_out(const struct device *dev, unsigned char c)
*/ */
static int uart_liteuart_poll_in(const struct device *dev, unsigned char *c) static int uart_liteuart_poll_in(const struct device *dev, unsigned char *c)
{ {
if (!sys_read8(UART_RXEMPTY)) { if (!litex_read8(UART_RXEMPTY)) {
*c = sys_read8(UART_RXTX); *c = litex_read8(UART_RXTX);
/* refresh UART_RXEMPTY by writing UART_EV_RX /* refresh UART_RXEMPTY by writing UART_EV_RX
* to UART_EV_PENDING * to UART_EV_PENDING
*/ */
sys_write8(UART_EV_RX, UART_EV_PENDING); litex_write8(UART_EV_RX, UART_EV_PENDING);
return 0; return 0;
} else { } else {
return -1; return -1;
@ -93,9 +93,9 @@ static int uart_liteuart_poll_in(const struct device *dev, unsigned char *c)
*/ */
static void uart_liteuart_irq_tx_enable(const struct device *dev) static void uart_liteuart_irq_tx_enable(const struct device *dev)
{ {
uint8_t enable = sys_read8(UART_EV_ENABLE); uint8_t enable = litex_read8(UART_EV_ENABLE);
sys_write8(enable | UART_EV_TX, UART_EV_ENABLE); litex_write8(enable | UART_EV_TX, UART_EV_ENABLE);
} }
/** /**
@ -105,9 +105,9 @@ static void uart_liteuart_irq_tx_enable(const struct device *dev)
*/ */
static void uart_liteuart_irq_tx_disable(const struct device *dev) static void uart_liteuart_irq_tx_disable(const struct device *dev)
{ {
uint8_t enable = sys_read8(UART_EV_ENABLE); uint8_t enable = litex_read8(UART_EV_ENABLE);
sys_write8(enable & ~(UART_EV_TX), UART_EV_ENABLE); litex_write8(enable & ~(UART_EV_TX), UART_EV_ENABLE);
} }
/** /**
@ -117,9 +117,9 @@ static void uart_liteuart_irq_tx_disable(const struct device *dev)
*/ */
static void uart_liteuart_irq_rx_enable(const struct device *dev) static void uart_liteuart_irq_rx_enable(const struct device *dev)
{ {
uint8_t enable = sys_read8(UART_EV_ENABLE); uint8_t enable = litex_read8(UART_EV_ENABLE);
sys_write8(enable | UART_EV_RX, UART_EV_ENABLE); litex_write8(enable | UART_EV_RX, UART_EV_ENABLE);
} }
/** /**
@ -129,9 +129,9 @@ static void uart_liteuart_irq_rx_enable(const struct device *dev)
*/ */
static void uart_liteuart_irq_rx_disable(const struct device *dev) static void uart_liteuart_irq_rx_disable(const struct device *dev)
{ {
uint8_t enable = sys_read8(UART_EV_ENABLE); uint8_t enable = litex_read8(UART_EV_ENABLE);
sys_write8(enable & ~(UART_EV_RX), UART_EV_ENABLE); litex_write8(enable & ~(UART_EV_RX), UART_EV_ENABLE);
} }
/** /**
@ -143,7 +143,7 @@ static void uart_liteuart_irq_rx_disable(const struct device *dev)
*/ */
static int uart_liteuart_irq_tx_ready(const struct device *dev) static int uart_liteuart_irq_tx_ready(const struct device *dev)
{ {
uint8_t val = sys_read8(UART_TXFULL); uint8_t val = litex_read8(UART_TXFULL);
return !val; return !val;
} }
@ -159,7 +159,7 @@ static int uart_liteuart_irq_rx_ready(const struct device *dev)
{ {
uint8_t pending; uint8_t pending;
pending = sys_read8(UART_EV_PENDING); pending = litex_read8(UART_EV_PENDING);
if (pending & UART_EV_RX) { if (pending & UART_EV_RX) {
return 1; return 1;
@ -182,8 +182,8 @@ static int uart_liteuart_fifo_fill(const struct device *dev,
{ {
int i; int i;
for (i = 0; i < size && !sys_read8(UART_TXFULL); i++) { for (i = 0; i < size && !litex_read8(UART_TXFULL); i++) {
sys_write8(tx_data[i], UART_RXTX); litex_write8(tx_data[i], UART_RXTX);
} }
return i; return i;
@ -203,13 +203,13 @@ static int uart_liteuart_fifo_read(const struct device *dev,
{ {
int i; int i;
for (i = 0; i < size && !sys_read8(UART_RXEMPTY); i++) { for (i = 0; i < size && !litex_read8(UART_RXEMPTY); i++) {
rx_data[i] = sys_read8(UART_RXTX); rx_data[i] = litex_read8(UART_RXTX);
/* refresh UART_RXEMPTY by writing UART_EV_RX /* refresh UART_RXEMPTY by writing UART_EV_RX
* to UART_EV_PENDING * to UART_EV_PENDING
*/ */
sys_write8(UART_EV_RX, UART_EV_PENDING); litex_write8(UART_EV_RX, UART_EV_PENDING);
} }
return i; return i;
@ -231,7 +231,7 @@ static int uart_liteuart_irq_is_pending(const struct device *dev)
{ {
uint8_t pending; uint8_t pending;
pending = sys_read8(UART_EV_PENDING); pending = litex_read8(UART_EV_PENDING);
if (pending & (UART_EV_TX | UART_EV_RX)) { if (pending & (UART_EV_TX | UART_EV_RX)) {
return 1; return 1;
@ -272,7 +272,7 @@ static void liteuart_uart_irq_handler(const struct device *dev)
} }
/* clear events */ /* clear events */
sys_write8(UART_EV_TX | UART_EV_RX, UART_EV_PENDING); litex_write8(UART_EV_TX | UART_EV_RX, UART_EV_PENDING);
irq_unlock(key); irq_unlock(key);
} }
@ -316,7 +316,7 @@ DEVICE_DT_INST_DEFINE(0,
static int uart_liteuart_init(const struct device *dev) static int uart_liteuart_init(const struct device *dev)
{ {
sys_write8(UART_EV_TX | UART_EV_RX, UART_EV_PENDING); litex_write8(UART_EV_TX | UART_EV_RX, UART_EV_PENDING);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN #ifdef CONFIG_UART_INTERRUPT_DRIVEN
IRQ_CONNECT(UART_IRQ, DT_INST_IRQ(0, priority), IRQ_CONNECT(UART_IRQ, DT_INST_IRQ(0, priority),