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author0xcccccccccccc <[email protected]>2020-12-08 10:13:52 +0800
committer0xcccccccccccc <[email protected]>2020-12-08 10:13:52 +0800
commitedc4028944c66e6106c40a759b3f49432fe82e6c (patch)
treebd4e4c652fa46258a2a9495a46f18ce5c67654fe /bsp/ls2kdev/drivers/drv_uart.c
parente6b5feae7c9aee3cdd6f53fec7067afd59b569ed (diff)
- Remove duplicated line feeds and unnecessary annotations.
- Maintainers information is now corrected. - Withdraw the modification on EXEC_PATH of the gcc toolchain.
Diffstat (limited to 'bsp/ls2kdev/drivers/drv_uart.c')
-rw-r--r--bsp/ls2kdev/drivers/drv_uart.c49
1 files changed, 0 insertions, 49 deletions
diff --git a/bsp/ls2kdev/drivers/drv_uart.c b/bsp/ls2kdev/drivers/drv_uart.c
index 2a98dc3933..9421078769 100644
--- a/bsp/ls2kdev/drivers/drv_uart.c
+++ b/bsp/ls2kdev/drivers/drv_uart.c
@@ -8,18 +8,14 @@
* 2020-04-05 bigmagic Initial version
* 2020-10-28 ma Buadrate & Multi-Port support
*/
-
/**
* @addtogroup ls2k
*/
-
/*@{*/
-
#include <rtthread.h>
#include <rtdevice.h>
#include <rthw.h>
#include "drv_uart.h"
-
#define TRUE 1
#define FALSE 0
const struct serial_configure config_uart0 = {
@@ -39,21 +35,16 @@ struct rt_uart_ls2k
};
static rt_err_t ls2k_uart_set_buad(struct rt_serial_device *serial, struct serial_configure *cfg)
{
-
struct rt_uart_ls2k *uart_dev = RT_NULL;
rt_err_t ret = RT_EOK;
-
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
-
uart_dev = (struct rt_uart_ls2k *)serial->parent.user_data;
uint64_t brtc = (125000000U) / (16 * (cfg->baud_rate));
UART_LCR(uart_dev->base) = 0x80; // Activate buadcfg
UART_LSB(uart_dev->base) = brtc & 0xff;
UART_MSB(uart_dev->base) = brtc >> 8;
-
if (((((short)UART_MSB(uart_dev->base)) << 8) | UART_LSB(uart_dev->base)) != brtc) ret = RT_ERROR;
-
UART_LCR(uart_dev->base) = CFCR_8BITS; // Back to normal
UART_MCR(uart_dev->base) = MCR_IENABLE/* | MCR_DTR | MCR_RTS*/;
UART_IER(uart_dev->base) = 0;
@@ -61,7 +52,6 @@ static rt_err_t ls2k_uart_set_buad(struct rt_serial_device *serial, struct seria
static rt_err_t ls2k_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct rt_uart_ls2k *uart_dev = RT_NULL;
-
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
ls2k_uart_set_buad(serial, cfg);
@@ -74,40 +64,30 @@ static rt_err_t ls2k_uart_configure(struct rt_serial_device *serial, struct seri
UART_MCR(uart_dev->base) = 0x3;
UART_LSR(uart_dev->base) = 0x60;
UART_MSR(uart_dev->base) = 0xb0;
-
return RT_EOK;
}
-
static rt_err_t ls2k_uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct rt_uart_ls2k *uart_dev = RT_NULL;
-
RT_ASSERT(serial != RT_NULL);
uart_dev = (struct rt_uart_ls2k *)serial->parent.user_data;
-
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT: /* Disable RX IRQ */
rt_hw_interrupt_mask(uart_dev->IRQ);
break;
-
case RT_DEVICE_CTRL_SET_INT: /* Enable RX IRQ */
rt_hw_interrupt_umask(uart_dev->IRQ);
UART_IER(uart_dev->base) |= (IER_IRxE | IER_ILE);
break;
-
default:
break;
}
-
return RT_EOK;
-
}
-
static rt_bool_t uart_is_transmit_empty(struct rt_uart_ls2k *uart_dev)
{
unsigned char status = UART_LSR(uart_dev->base);
-
if (status & (UARTLSR_TE | UARTLSR_TFE))
{
return TRUE;
@@ -117,50 +97,35 @@ static rt_bool_t uart_is_transmit_empty(struct rt_uart_ls2k *uart_dev)
return FALSE;
}
}
-
static int ls2k_uart_putc(struct rt_serial_device *serial, char c)
{
struct rt_uart_ls2k *uart_dev = RT_NULL;
-
RT_ASSERT(serial != RT_NULL);
-
uart_dev = (struct rt_uart_ls2k *)serial->parent.user_data;
-
while (FALSE == uart_is_transmit_empty(uart_dev))
;
-
UART_DAT(uart_dev->base) = c;
-
return 1;
}
-
static int ls2k_uart_getc(struct rt_serial_device *serial)
{
struct rt_uart_ls2k *uart_dev = RT_NULL;
-
RT_ASSERT(serial != RT_NULL);
-
uart_dev = (struct rt_uart_ls2k *)serial->parent.user_data;
-
if (LSR_RXRDY & UART_LSR(uart_dev->base))
{
return UART_DAT(uart_dev->base);
}
-
return -1;
}
-
/* UART interrupt handler */
static void uart_irq_handler(int vector, void *param)
{
struct rt_serial_device *serial = (struct rt_serial_device *)param;
struct rt_uart_ls2k *uart_dev = RT_NULL;
-
RT_ASSERT(serial != RT_NULL);
-
uart_dev = (struct rt_uart_ls2k *)serial->parent.user_data;
unsigned char iir = UART_IIR(uart_dev->base);
-
/* Find out interrupt reason */
if ((IIR_RXTOUT & iir) || (IIR_RXRDY & iir))
{
@@ -168,9 +133,7 @@ static void uart_irq_handler(int vector, void *param)
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
rt_interrupt_leave();
}
-
}
-
static const struct rt_uart_ops ls2k_uart_ops =
{
ls2k_uart_configure,
@@ -178,7 +141,6 @@ static const struct rt_uart_ops ls2k_uart_ops =
ls2k_uart_putc,
ls2k_uart_getc,
};
-
struct rt_uart_ls2k uart_dev0 =
{
(void *)UARTx_BASE(0),
@@ -190,41 +152,30 @@ struct rt_uart_ls2k uart_dev4 =
LS2K_UART_4_5_6_7_IRQ,
};
-
struct rt_serial_device serial, serial4;
-
void rt_hw_uart_init(void)
{
- //UART0_1_ENABLE=0xff;
struct rt_uart_ls2k *uart, *uart4;
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
-
-
uart = &uart_dev0;
uart4 = &uart_dev4;
-
serial.ops = &ls2k_uart_ops;
serial.config = config_uart0;
-
serial4.ops = &ls2k_uart_ops;
serial4.config = config;
-
rt_hw_interrupt_install(uart->IRQ, uart_irq_handler, &serial, "UART0");
rt_hw_interrupt_install(uart4->IRQ, uart_irq_handler, &serial4, "UART4");
-
/* register UART device */
rt_hw_serial_register(&serial,
"uart0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
-
rt_hw_serial_register(&serial4,
"uart4",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
&uart_dev4);
-
}
/*@}*/