diff options
Diffstat (limited to 'bsp/dm365/drivers/davinci_serial.c')
| -rw-r--r-- | bsp/dm365/drivers/davinci_serial.c | 222 |
1 files changed, 111 insertions, 111 deletions
diff --git a/bsp/dm365/drivers/davinci_serial.c b/bsp/dm365/drivers/davinci_serial.c index 1b6b4b944b..96118ac347 100644 --- a/bsp/dm365/drivers/davinci_serial.c +++ b/bsp/dm365/drivers/davinci_serial.c @@ -4,8 +4,8 @@ * SPDX-License-Identifier: Apache-2.0 * * Change Logs: - * Date Author Notes - * 2011-01-13 weety first version + * Date Author Notes + * 2011-01-13 weety first version */ #include <rtthread.h> @@ -18,35 +18,35 @@ static struct rt_serial_device davinci_serial_dev0; static struct rt_serial_device davinci_serial_dev1; -#define LSR_DR 0x01 /* Data ready */ -#define LSR_THRE 0x20 /* Xmit holding register empty */ -//#define USTAT_TXB_EMPTY 0x02 /* tx buffer empty */ -#define BPS 115200 /* serial baudrate */ +#define LSR_DR 0x01 /* Data ready */ +#define LSR_THRE 0x20 /* Xmit holding register empty */ +//#define USTAT_TXB_EMPTY 0x02 /* tx buffer empty */ +#define BPS 115200 /* serial baudrate */ typedef struct uartport { - volatile rt_uint32_t rbr; - volatile rt_uint32_t ier; - volatile rt_uint32_t fcr; - volatile rt_uint32_t lcr; - volatile rt_uint32_t mcr; - volatile rt_uint32_t lsr; - volatile rt_uint32_t msr; - volatile rt_uint32_t scr; - volatile rt_uint32_t dll; - volatile rt_uint32_t dlh; - - volatile rt_uint32_t res[2]; - volatile rt_uint32_t pwremu_mgmt; - volatile rt_uint32_t mdr; + volatile rt_uint32_t rbr; + volatile rt_uint32_t ier; + volatile rt_uint32_t fcr; + volatile rt_uint32_t lcr; + volatile rt_uint32_t mcr; + volatile rt_uint32_t lsr; + volatile rt_uint32_t msr; + volatile rt_uint32_t scr; + volatile rt_uint32_t dll; + volatile rt_uint32_t dlh; + + volatile rt_uint32_t res[2]; + volatile rt_uint32_t pwremu_mgmt; + volatile rt_uint32_t mdr; }uartport; #define thr rbr #define iir fcr -#define UART0 ((struct uartport *)DAVINCI_UART0_BASE) +#define UART0 ((struct uartport *)DAVINCI_UART0_BASE) -#define UART1 ((struct uartport *)DM365_UART1_BASE) +#define UART1 ((struct uartport *)DM365_UART1_BASE) /** @@ -54,8 +54,8 @@ typedef struct uartport */ void rt_davinci_serial_handler(int vector, void *param) { - struct rt_serial_device *dev = (struct rt_serial_device *)param; - rt_hw_serial_isr(dev, RT_SERIAL_EVENT_RX_IND); + struct rt_serial_device *dev = (struct rt_serial_device *)param; + rt_hw_serial_isr(dev, RT_SERIAL_EVENT_RX_IND); } /** @@ -70,23 +70,23 @@ static rt_err_t davinci_uart_configure(struct rt_serial_device *serial, static rt_err_t davinci_uart_control(struct rt_serial_device *serial, int cmd, void *arg) { - uartport *uart = serial->parent.user_data; + uartport *uart = serial->parent.user_data; switch (cmd) { case RT_DEVICE_CTRL_CLR_INT: /* disable rx irq */ - if (uart == UART0) - rt_hw_interrupt_mask(IRQ_UARTINT0); - else if (uart == UART1) - rt_hw_interrupt_mask(IRQ_UARTINT1); + if (uart == UART0) + rt_hw_interrupt_mask(IRQ_UARTINT0); + else if (uart == UART1) + rt_hw_interrupt_mask(IRQ_UARTINT1); break; case RT_DEVICE_CTRL_SET_INT: /* enable rx irq */ - if (uart == UART0) - rt_hw_interrupt_umask(IRQ_UARTINT0); - else if (uart == UART1) - rt_hw_interrupt_umask(IRQ_UARTINT1); + if (uart == UART0) + rt_hw_interrupt_umask(IRQ_UARTINT0); + else if (uart == UART1) + rt_hw_interrupt_umask(IRQ_UARTINT1); break; } @@ -96,10 +96,10 @@ static rt_err_t davinci_uart_control(struct rt_serial_device *serial, static int davinci_uart_putc(struct rt_serial_device *serial, char c) { rt_uint32_t level; - uartport *uart = serial->parent.user_data; + uartport *uart = serial->parent.user_data; while (!(uart->lsr & LSR_THRE)); - uart->thr = c; + uart->thr = c; return 1; } @@ -107,16 +107,16 @@ static int davinci_uart_putc(struct rt_serial_device *serial, char c) static int davinci_uart_getc(struct rt_serial_device *serial) { int result; - uartport *uart = serial->parent.user_data; + uartport *uart = serial->parent.user_data; if (uart->lsr & LSR_DR) - { - result = uart->rbr & 0xff; - } - else - { - result = -1; - } + { + result = uart->rbr & 0xff; + } + else + { + result = -1; + } return result; } @@ -131,78 +131,78 @@ static const struct rt_uart_ops davinci_uart_ops = void davinci_uart0_init(void) { - rt_uint32_t divisor; + rt_uint32_t divisor; - divisor = (24000000 + (115200 * (16 / 2))) / (16 * 115200); - UART0->ier = 0; - UART0->lcr = 0x83; //8N1 - UART0->dll = 0; - UART0->dlh = 0; - UART0->lcr = 0x03; - UART0->mcr = 0x03; //RTS,CTS - UART0->fcr = 0x07; //FIFO - UART0->lcr = 0x83; - UART0->dll = divisor & 0xff; - UART0->dlh = (divisor >> 8) & 0xff; - UART0->lcr = 0x03; - UART0->mdr = 0; //16x over-sampling - UART0->pwremu_mgmt = 0x6000; - rt_hw_interrupt_install(IRQ_UARTINT0, rt_davinci_serial_handler, - (void *)&davinci_serial_dev0, "UART0"); - rt_hw_interrupt_mask(IRQ_UARTINT0); - UART0->ier = 0x05; + divisor = (24000000 + (115200 * (16 / 2))) / (16 * 115200); + UART0->ier = 0; + UART0->lcr = 0x83; //8N1 + UART0->dll = 0; + UART0->dlh = 0; + UART0->lcr = 0x03; + UART0->mcr = 0x03; //RTS,CTS + UART0->fcr = 0x07; //FIFO + UART0->lcr = 0x83; + UART0->dll = divisor & 0xff; + UART0->dlh = (divisor >> 8) & 0xff; + UART0->lcr = 0x03; + UART0->mdr = 0; //16x over-sampling + UART0->pwremu_mgmt = 0x6000; + rt_hw_interrupt_install(IRQ_UARTINT0, rt_davinci_serial_handler, + (void *)&davinci_serial_dev0, "UART0"); + rt_hw_interrupt_mask(IRQ_UARTINT0); + UART0->ier = 0x05; } void davinci_uart_gpio_init() { - rt_uint32_t val; + rt_uint32_t val; - val = davinci_readl(PINMUX3); - val &= 0xf3ffffff; /* gio23 RS485_CTRL */ - val |= 0x60000000; /*UART1_TXD (gio25)*/ - davinci_writel(val, PINMUX3); - val = davinci_readl(PINMUX4); - val |= 0x0000c000; /* UART1_RXD (gio34) */ - davinci_writel(val, PINMUX4); + val = davinci_readl(PINMUX3); + val &= 0xf3ffffff; /* gio23 RS485_CTRL */ + val |= 0x60000000; /*UART1_TXD (gio25)*/ + davinci_writel(val, PINMUX3); + val = davinci_readl(PINMUX4); + val |= 0x0000c000; /* UART1_RXD (gio34) */ + davinci_writel(val, PINMUX4); - val = davinci_readl(DAVINCI_GPIO_BASE + 0x10); - val &= ~(1 << 23); - davinci_writel(val, DAVINCI_GPIO_BASE + 0x10); - davinci_writel((1<<23), DAVINCI_GPIO_BASE + 0x1C); + val = davinci_readl(DAVINCI_GPIO_BASE + 0x10); + val &= ~(1 << 23); + davinci_writel(val, DAVINCI_GPIO_BASE + 0x10); + davinci_writel((1<<23), DAVINCI_GPIO_BASE + 0x1C); } void davinci_uart1_init(void) { - rt_uint32_t divisor; - rt_uint32_t freq; - rt_uint32_t baudrate; - struct clk *clk; + rt_uint32_t divisor; + rt_uint32_t freq; + rt_uint32_t baudrate; + struct clk *clk; + + davinci_uart_gpio_init(); + psc_change_state(DAVINCI_DM365_LPSC_UART1, PSC_ENABLE); + clk = clk_get("UART1"); + freq = clk_get_rate(clk); - davinci_uart_gpio_init(); - psc_change_state(DAVINCI_DM365_LPSC_UART1, PSC_ENABLE); - clk = clk_get("UART1"); - freq = clk_get_rate(clk); + baudrate = 9600; + divisor = (freq + (baudrate * (16 / 2))) / (16 * baudrate); + UART1->ier = 0; + UART1->lcr = 0x87; //8N2, 0x83 8N1 + UART1->dll = 0; + UART1->dlh = 0; + UART1->lcr = 0x07; + UART1->mcr = 0x03; //RTS,CTS + UART1->fcr = 0x07; //FIFO + UART1->lcr = 0x87; + UART1->dll = divisor & 0xff; + UART1->dlh = (divisor >> 8) & 0xff; + UART1->lcr = 0x07; + UART1->mdr = 0; //16x over-sampling + UART1->pwremu_mgmt = 0x6000; - baudrate = 9600; - divisor = (freq + (baudrate * (16 / 2))) / (16 * baudrate); - UART1->ier = 0; - UART1->lcr = 0x87; //8N2, 0x83 8N1 - UART1->dll = 0; - UART1->dlh = 0; - UART1->lcr = 0x07; - UART1->mcr = 0x03; //RTS,CTS - UART1->fcr = 0x07; //FIFO - UART1->lcr = 0x87; - UART1->dll = divisor & 0xff; - UART1->dlh = (divisor >> 8) & 0xff; - UART1->lcr = 0x07; - UART1->mdr = 0; //16x over-sampling - UART1->pwremu_mgmt = 0x6000; - - rt_hw_interrupt_install(IRQ_UARTINT1, rt_davinci_serial_handler, - (void *)&davinci_serial_dev1, "UART1"); - rt_hw_interrupt_mask(IRQ_UARTINT1); - UART1->ier = 0x05; + rt_hw_interrupt_install(IRQ_UARTINT1, rt_davinci_serial_handler, + (void *)&davinci_serial_dev1, "UART1"); + rt_hw_interrupt_mask(IRQ_UARTINT1); + UART1->ier = 0x05; } @@ -211,39 +211,39 @@ void davinci_uart1_init(void) */ int rt_hw_uart_init(void) { - davinci_serial_dev0.ops = &davinci_uart_ops; + davinci_serial_dev0.ops = &davinci_uart_ops; //davinci_serial_dev0.config = RT_SERIAL_CONFIG_DEFAULT; - davinci_serial_dev0.config.baud_rate = BAUD_RATE_115200; + davinci_serial_dev0.config.baud_rate = BAUD_RATE_115200; davinci_serial_dev0.config.bit_order = BIT_ORDER_LSB; davinci_serial_dev0.config.data_bits = DATA_BITS_8; davinci_serial_dev0.config.parity = PARITY_NONE; davinci_serial_dev0.config.stop_bits = STOP_BITS_1; davinci_serial_dev0.config.invert = NRZ_NORMAL; - davinci_serial_dev0.config.bufsz = RT_SERIAL_RB_BUFSZ; + davinci_serial_dev0.config.bufsz = RT_SERIAL_RB_BUFSZ; /* register vcom device */ rt_hw_serial_register(&davinci_serial_dev0, "uart0", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, UART0); - davinci_uart0_init(); + davinci_uart0_init(); - davinci_serial_dev1.ops = &davinci_uart_ops; + davinci_serial_dev1.ops = &davinci_uart_ops; //davinci_serial_dev1.config = RT_SERIAL_CONFIG_DEFAULT; - davinci_serial_dev1.config.baud_rate = BAUD_RATE_115200; + davinci_serial_dev1.config.baud_rate = BAUD_RATE_115200; davinci_serial_dev1.config.bit_order = BIT_ORDER_LSB; davinci_serial_dev1.config.data_bits = DATA_BITS_8; davinci_serial_dev1.config.parity = PARITY_NONE; davinci_serial_dev1.config.stop_bits = STOP_BITS_1; davinci_serial_dev1.config.invert = NRZ_NORMAL; - davinci_serial_dev1.config.bufsz = RT_SERIAL_RB_BUFSZ; + davinci_serial_dev1.config.bufsz = RT_SERIAL_RB_BUFSZ; /* register vcom device */ rt_hw_serial_register(&davinci_serial_dev1, "uart1", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, UART1); - davinci_uart1_init(); + davinci_uart1_init(); - return 0; + return 0; } INIT_BOARD_EXPORT(rt_hw_uart_init); |