75 static inline int dw8250_modify_msr(struct uart_port *p, int offset, int value)  in dw8250_modify_msr()  argument
77 	struct dw8250_data *d = p->private_data;  in dw8250_modify_msr()
94 static void dw8250_force_idle(struct uart_port *p)  in dw8250_force_idle()  argument
96 	struct uart_8250_port *up = up_to_u8250p(p);  in dw8250_force_idle()
99 	(void)p->serial_in(p, UART_RX);  in dw8250_force_idle()
102 static void dw8250_serial_out(struct uart_port *p, int offset, int value)  in dw8250_serial_out()  argument
104 	struct dw8250_data *d = p->private_data;  in dw8250_serial_out()
109 	writeb(value, p->membase + (offset << p->regshift));  in dw8250_serial_out()
115 			unsigned int lcr = p->serial_in(p, UART_LCR);  in dw8250_serial_out()
118 			dw8250_force_idle(p);  in dw8250_serial_out()
119 			writeb(value, p->membase + (UART_LCR << p->regshift));  in dw8250_serial_out()
128 static unsigned int dw8250_serial_in(struct uart_port *p, int offset)  in dw8250_serial_in()  argument
130 	unsigned int value = readb(p->membase + (offset << p->regshift));  in dw8250_serial_in()
132 	return dw8250_modify_msr(p, offset, value);  in dw8250_serial_in()
136 static unsigned int dw8250_serial_inq(struct uart_port *p, int offset)  in dw8250_serial_inq()  argument
140 	value = (u8)__raw_readq(p->membase + (offset << p->regshift));  in dw8250_serial_inq()
142 	return dw8250_modify_msr(p, offset, value);  in dw8250_serial_inq()
145 static void dw8250_serial_outq(struct uart_port *p, int offset, int value)  in dw8250_serial_outq()  argument
147 	struct dw8250_data *d = p->private_data;  in dw8250_serial_outq()
153 	__raw_writeq(value, p->membase + (offset << p->regshift));  in dw8250_serial_outq()
155 	__raw_readq(p->membase + (UART_LCR << p->regshift));  in dw8250_serial_outq()
161 			unsigned int lcr = p->serial_in(p, UART_LCR);  in dw8250_serial_outq()
164 			dw8250_force_idle(p);  in dw8250_serial_outq()
166 				     p->membase + (UART_LCR << p->regshift));  in dw8250_serial_outq()
176 static void dw8250_serial_out32(struct uart_port *p, int offset, int value)  in dw8250_serial_out32()  argument
178 	struct dw8250_data *d = p->private_data;  in dw8250_serial_out32()
183 	writel(value, p->membase + (offset << p->regshift));  in dw8250_serial_out32()
189 			unsigned int lcr = p->serial_in(p, UART_LCR);  in dw8250_serial_out32()
192 			dw8250_force_idle(p);  in dw8250_serial_out32()
193 			writel(value, p->membase + (UART_LCR << p->regshift));  in dw8250_serial_out32()
202 static unsigned int dw8250_serial_in32(struct uart_port *p, int offset)  in dw8250_serial_in32()  argument
204 	unsigned int value = readl(p->membase + (offset << p->regshift));  in dw8250_serial_in32()
206 	return dw8250_modify_msr(p, offset, value);  in dw8250_serial_in32()
209 static int dw8250_handle_irq(struct uart_port *p)  in dw8250_handle_irq()  argument
211 	struct dw8250_data *d = p->private_data;  in dw8250_handle_irq()
212 	unsigned int iir = p->serial_in(p, UART_IIR);  in dw8250_handle_irq()
214 	if (serial8250_handle_irq(p, iir)) {  in dw8250_handle_irq()
218 		(void)p->serial_in(p, d->usr_reg);  in dw8250_handle_irq()
238 static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios,  in dw8250_set_termios()  argument
242 	struct dw8250_data *d = p->private_data;  in dw8250_set_termios()
259 		p->uartclk = rate;  in dw8250_set_termios()
261 	serial8250_do_set_termios(p, termios, old);  in dw8250_set_termios()
271 	struct uart_port	*p = &up->port;  in dw8250_setup_port()  local
272 	u32			reg = readl(p->membase + DW_UART_UCV);  in dw8250_setup_port()
281 	dev_dbg_ratelimited(p->dev, "Designware UART version %c.%c%c\n",  in dw8250_setup_port()
284 	reg = readl(p->membase + DW_UART_CPR);  in dw8250_setup_port()
290 		p->type = PORT_16550A;  in dw8250_setup_port()
291 		p->flags |= UPF_FIXED_TYPE;  in dw8250_setup_port()
292 		p->fifosize = DW_UART_CPR_FIFO_SIZE(reg);  in dw8250_setup_port()
293 		up->tx_loadsz = p->fifosize;  in dw8250_setup_port()
301 static int dw8250_probe_of(struct uart_port *p,  in dw8250_probe_of()  argument
304 	struct device_node	*np = p->dev->of_node;  in dw8250_probe_of()
305 	struct uart_8250_port *up = up_to_u8250p(p);  in dw8250_probe_of()
312 		p->serial_in = dw8250_serial_inq;  in dw8250_probe_of()
313 		p->serial_out = dw8250_serial_outq;  in dw8250_probe_of()
314 		p->flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_FIXED_TYPE;  in dw8250_probe_of()
315 		p->type = PORT_OCTEON;  in dw8250_probe_of()
325 			p->iotype = UPIO_MEM32;  in dw8250_probe_of()
326 			p->serial_in = dw8250_serial_in32;  in dw8250_probe_of()
327 			p->serial_out = dw8250_serial_out32;  in dw8250_probe_of()
330 			dev_err(p->dev, "unsupported reg-io-width (%u)\n", val);  in dw8250_probe_of()
338 	if (p->fifosize) {  in dw8250_probe_of()
341 		up->dma->rxconf.src_maxburst = p->fifosize / 4;  in dw8250_probe_of()
342 		up->dma->txconf.dst_maxburst = p->fifosize / 4;  in dw8250_probe_of()
346 		p->regshift = val;  in dw8250_probe_of()
351 		p->line = id;  in dw8250_probe_of()
383 	struct uart_port *p = &up->port;  in dw8250_probe_acpi()  local
387 	p->iotype = UPIO_MEM32;  in dw8250_probe_acpi()
388 	p->serial_in = dw8250_serial_in32;  in dw8250_probe_acpi()
389 	p->serial_out = dw8250_serial_out32;  in dw8250_probe_acpi()
390 	p->regshift = 2;  in dw8250_probe_acpi()
394 	up->dma->rxconf.src_maxburst = p->fifosize / 4;  in dw8250_probe_acpi()
395 	up->dma->txconf.dst_maxburst = p->fifosize / 4;  in dw8250_probe_acpi()