2  * Support for Serial I/O using STMicroelectronics' on-chip ASC.
7  * SPDX-License-Identifier:	GPL-2.0
19 #define RUN		0x00000080  macro
32 	u32 control;  member
54  * ASCBaudRate =   ----------------
59  * ASCBaudRate =   ------------------------
71 	struct sti_asc_uart *const uart = priv->regs;  in sti_asc_pending()
74 	status = readl(&uart->status);  in sti_asc_pending()
109 	val = readl(&uart->control);  in _sti_asc_serial_setbrg()
110 	writel(val & ~RUN, &uart->control);  in _sti_asc_serial_setbrg()
113 	writel(t, &uart->baudrate);  in _sti_asc_serial_setbrg()
115 	writel(1, &uart->txreset);  in _sti_asc_serial_setbrg()
116 	writel(1, &uart->rxreset);  in _sti_asc_serial_setbrg()
123 	writel(val, &uart->control);  in _sti_asc_serial_setbrg()
128 /* called to adjust baud-rate */
132 	struct sti_asc_uart *const uart = priv->regs;  in sti_asc_serial_setbrg()
141 	struct sti_asc_uart *const uart = priv->regs;  in sti_asc_serial_getc()
145 		return -EAGAIN;  in sti_asc_serial_getc()
147 	return readl(&uart->rxbuf);  in sti_asc_serial_getc()
154 	struct sti_asc_uart *const uart = priv->regs;  in sti_asc_serial_putc()
158 		return -EAGAIN;  in sti_asc_serial_putc()
161 	writel(c, &uart->txbuf);  in sti_asc_serial_putc()
175 		return -EINVAL;  in sti_asc_serial_probe()
177 	priv->regs = (struct sti_asc_uart *)base;  in sti_asc_serial_probe()
178 	sti_asc_serial_setbrg(dev, gd->baudrate);  in sti_asc_serial_probe()
181 	 * build up the value to be written to CONTROL  in sti_asc_serial_probe()
184 	val = RXENABLE | RUN | MODE_8BIT | STOP_1BIT | PARITYODD;  in sti_asc_serial_probe()
185 	writel(val, &priv->regs->control);  in sti_asc_serial_probe()