drivers/serial/serial_bcm6345.c

1 // SPDX-License-Identifier: GPL-2.0+
17 /* UART Control register */
52 /* UART Baudword register */
55 /* UART FIFO Config register */
64 /* UART Interrupt register */
71 /* UART FIFO register */
89 /* enable rx & tx operation on uart */
96 /* disable rx & tx operation on uart */
122 	/* set uart control config */  in bcm6345_serial_init()
149 	/* set uart fifo config */  in bcm6345_serial_init()
163 		val = (val >> 1) - 1;  in bcm6345_serial_init()
169 	/* enable uart */  in bcm6345_serial_init()
178 	u32 val = readl(priv->base + UART_IR_REG);  in bcm6345_serial_pending()
190 	return bcm6345_serial_init(priv->base, priv->uartclk, baudrate);  in bcm6345_serial_setbrg()
198 	val = readl(priv->base + UART_IR_REG);  in bcm6345_serial_putc()
200 		return -EAGAIN;  in bcm6345_serial_putc()
202 	writel(ch, priv->base + UART_FIFO_REG);  in bcm6345_serial_putc()
212 	val = readl(priv->base + UART_IR_REG);  in bcm6345_serial_getc()
214 		setbits_32(priv->base + UART_CTL_REG, UART_CTL_RSTRXFIFO_MASK);  in bcm6345_serial_getc()
216 		return -EAGAIN;  in bcm6345_serial_getc()
218 	val = readl(priv->base + UART_FIFO_REG);  in bcm6345_serial_getc()
220 		return -EAGAIN;  in bcm6345_serial_getc()
232 	priv->base = dev_remap_addr(dev);  in bcm6345_serial_probe()
233 	if (!priv->base)  in bcm6345_serial_probe()
234 		return -EINVAL;  in bcm6345_serial_probe()
240 	priv->uartclk = clk_get_rate(&clk);  in bcm6345_serial_probe()
244 	return bcm6345_serial_init(priv->base, priv->uartclk, CONFIG_BAUDRATE);  in bcm6345_serial_probe()
255 	{ .compatible = "brcm,bcm6345-uart" },
260 	.name = "bcm6345-uart",