drivers/serial/sandbox.c

1 // SPDX-License-Identifier: GPL-2.0+
7  * This provide a test serial port. It provides an emulated serial port where
8  * a test program and read out the serial output and inject serial input for
9  * U-Boot.
18 #include <serial.h>
30  *		 Sandbox U-Boot.
33  *   serial_buf_write		 == serial_buf_read -> empty buffer
34  *   (serial_buf_write + 1) % 16 == serial_buf_read -> full buffer
41 	int colour;	/* Text colour to use for output, -1 for none */
49  * output_ansi_colour() - Output an ANSI colour code
51  * @colour: Colour to output (0-7)
58 	os_write(1, ansi_code, sizeof(ansi_code) - 1);  in output_ansi_colour()
71 	if (state->term_raw != STATE_TERM_COOKED)  in sandbox_serial_probe()
72 		os_tty_raw(0, state->term_raw == STATE_TERM_RAW_WITH_SIGS);  in sandbox_serial_probe()
73 	priv->start_of_line = 0;  in sandbox_serial_probe()
75 	if (state->term_raw != STATE_TERM_RAW)  in sandbox_serial_probe()
83 	struct sandbox_serial_platdata *plat = dev->platdata;  in sandbox_serial_remove()
85 	if (plat->colour != -1)  in sandbox_serial_remove()
94 	struct sandbox_serial_platdata *plat = dev->platdata;  in sandbox_serial_putc()
96 	if (priv->start_of_line && plat->colour != -1) {  in sandbox_serial_putc()
97 		priv->start_of_line = false;  in sandbox_serial_putc()
98 		output_ansi_colour(plat->colour);  in sandbox_serial_putc()
103 		priv->start_of_line = true;  in sandbox_serial_putc()
141 		return -EAGAIN;	/* buffer empty */  in sandbox_serial_getc()
171 		return -EINVAL;  in sandbox_serial_getconfig()
186 		return -ENOTSUPP; /* not supported in driver*/  in sandbox_serial_setconfig()
204 		return -EINVAL;  in sandbox_serial_getinfo()
219 	struct sandbox_serial_platdata *plat = dev->platdata;  in sandbox_serial_ofdata_to_platdata()
223 	plat->colour = -1;  in sandbox_serial_ofdata_to_platdata()
224 	colour = fdt_getprop(gd->fdt_blob, dev_of_offset(dev),  in sandbox_serial_ofdata_to_platdata()
225 			     "sandbox,text-colour", NULL);  in sandbox_serial_ofdata_to_platdata()
229 				plat->colour = i;  in sandbox_serial_ofdata_to_platdata()
248 	{ .compatible = "sandbox,serial" },
266 	.colour = -1,