40 /* PPC405 serial device */
43 	/* inherit from device */
56 /* serial character device */
64 	struct rt_ppc405_serial* device;  in rt_serial_open()  local
65 	device = (struct rt_ppc405_serial*) dev;  in rt_serial_open()
67 	RT_ASSERT(device != RT_NULL);  in rt_serial_open()
71 		out_8((rt_uint8_t*)device->hw_base + UART_IER, 0x01);  in rt_serial_open()
73 		out_8((rt_uint8_t*)device->hw_base + UART_FCR, 1);  in rt_serial_open()
76 	    rt_hw_interrupt_unmask(device->irqno);  in rt_serial_open()
84 	struct rt_ppc405_serial* device;  in rt_serial_close()  local
85 	device = (struct rt_ppc405_serial*) dev;  in rt_serial_close()
87 	RT_ASSERT(device != RT_NULL);  in rt_serial_close()
91 	    rt_hw_interrupt_mask(device->irqno);  in rt_serial_close()
105 	struct rt_ppc405_serial* device;  in rt_serial_read()  local
107 	device = (struct rt_ppc405_serial*) dev;  in rt_serial_read()
108 	RT_ASSERT(device != RT_NULL);  in rt_serial_read()
122 			if (device->read_index != device->save_index)  in rt_serial_read()
124 				*ptr = device->rx_buffer[device->read_index];  in rt_serial_read()
126 				device->read_index ++;  in rt_serial_read()
127 				if (device->read_index >= RT_UART_RX_BUFFER_SIZE)  in rt_serial_read()
128 					device->read_index = 0;  in rt_serial_read()
162 	struct rt_ppc405_serial* device;  in rt_serial_write()  local
164 	device = (struct rt_ppc405_serial*) dev;  in rt_serial_write()
165 	RT_ASSERT(device != RT_NULL);  in rt_serial_write()
188 				while ((in_8((rt_uint8_t*)device->hw_base + UART_LSR) & 0x20) != 0x20);  in rt_serial_write()
189 				out_8((rt_uint8_t*)device->hw_base + UART_THR, '\r');  in rt_serial_write()
192 			while ((in_8((rt_uint8_t*)device->hw_base + UART_LSR) & 0x20) != 0x20);  in rt_serial_write()
193 			out_8((rt_uint8_t*)device->hw_base + UART_THR, *ptr);  in rt_serial_write()
203 			while ((in_8((rt_uint8_t*)device->hw_base + UART_LSR) & 0x20) != 0x20);  in rt_serial_write()
204 			out_8((rt_uint8_t*)device->hw_base + UART_THR, *ptr);  in rt_serial_write()
214 void rt_serial_set_baudrate(struct rt_ppc405_serial* device)  in rt_serial_set_baudrate()  argument
219 	out_8((rt_uint8_t *)device->hw_base + UART_DLL, bdiv);		/* set baudrate divisor */  in rt_serial_set_baudrate()
220 	out_8((rt_uint8_t *)device->hw_base + UART_DLM, bdiv >> 8); /* set baudrate divisor */  in rt_serial_set_baudrate()
226 	struct rt_ppc405_serial *device;  in rt_serial_isr()  local
228 	device = (struct rt_ppc405_serial*) param;  in rt_serial_isr()
229 	status = in_8((rt_uint8_t *)device->hw_base + UART_LSR);  in rt_serial_isr()
241 			device->rx_buffer[device->save_index] = (0xff & (int) in_8((rt_uint8_t *)device->hw_base));  in rt_serial_isr()
242 			device->save_index ++;  in rt_serial_isr()
243 			if (device->save_index >= RT_UART_RX_BUFFER_SIZE)  in rt_serial_isr()
244 				device->save_index = 0;  in rt_serial_isr()
247 			if (device->save_index == device->read_index)  in rt_serial_isr()
249 				device->read_index ++;  in rt_serial_isr()
250 				if (device->read_index >= RT_UART_RX_BUFFER_SIZE)  in rt_serial_isr()
251 					device->read_index = 0;  in rt_serial_isr()
263 				out_8((rt_uint8_t *)device->hw_base + UART_LSR,  in rt_serial_isr()
270 			status = in_8((rt_uint8_t *)device->hw_base + UART_LSR);  in rt_serial_isr()
274 		if(device->parent.rx_indicate != RT_NULL)  in rt_serial_isr()
276 		  device->parent.rx_indicate(&device->parent, 1);  in rt_serial_isr()
284 	struct rt_ppc405_serial* device;  in rt_hw_serial_init()  local
286 	device = (struct rt_ppc405_serial*) &ppc405_serial;  in rt_hw_serial_init()
287 	device->parent.type = RT_Device_Class_Char;  in rt_hw_serial_init()
289 	device->hw_base = UART0_BASE;  in rt_hw_serial_init()
290 	device->baudrate = 115200;  in rt_hw_serial_init()
291 	device->irqno = VECNUM_U0;  in rt_hw_serial_init()
292 	rt_hw_interrupt_install(device->irqno, rt_serial_isr, device, "serial"); /* install isr */  in rt_hw_serial_init()
294 	rt_memset(device->rx_buffer, 0, sizeof(device->rx_buffer));  in rt_hw_serial_init()
295 	device->read_index = device->save_index = 0;  in rt_hw_serial_init()
297 	out_8((rt_uint8_t *)device->hw_base + UART_LCR, 0x80);	/* set DLAB bit */  in rt_hw_serial_init()
299 	rt_serial_set_baudrate(device);  in rt_hw_serial_init()
300 	out_8((rt_uint8_t *)device->hw_base + UART_LCR, 0x03);	/* clear DLAB; set 8 bits, no parity */  in rt_hw_serial_init()
301 	out_8((rt_uint8_t *)device->hw_base + UART_FCR, 0x00);	/* disable FIFO */  in rt_hw_serial_init()
302 	out_8((rt_uint8_t *)device->hw_base + UART_MCR, 0x00);	/* no modem control DTR RTS */  in rt_hw_serial_init()
303 	val = in_8((rt_uint8_t *)device->hw_base + UART_LSR);	/* clear line status */  in rt_hw_serial_init()
304 	val = in_8((rt_uint8_t *)device->hw_base + UART_RBR);	/* read receive buffer */  in rt_hw_serial_init()
305 	out_8((rt_uint8_t *)device->hw_base + UART_SCR, 0x00);	/* set scratchpad */  in rt_hw_serial_init()
306 	out_8((rt_uint8_t *)device->hw_base + UART_IER, 0x00);	/* set interrupt enable reg */  in rt_hw_serial_init()
308 	device->parent.type     = RT_Device_Class_Char;  in rt_hw_serial_init()
309 	device->parent.init 	= rt_serial_init;  in rt_hw_serial_init()
310 	device->parent.open 	= rt_serial_open;  in rt_hw_serial_init()
311 	device->parent.close    = rt_serial_close;  in rt_hw_serial_init()
312 	device->parent.read 	= rt_serial_read;  in rt_hw_serial_init()
313 	device->parent.write    = rt_serial_write;  in rt_hw_serial_init()
314 	device->parent.control  = rt_serial_control;  in rt_hw_serial_init()
315 	device->parent.user_data  = RT_NULL;  in rt_hw_serial_init()
317 	rt_device_register(&device->parent,   in rt_hw_serial_init()