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kexts: serialcon: implement writing to serial ports via tty interface

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This commit is contained in:
max 🍓
2023-12-30 09:06:47 +00:00
parent 8af6670b0d
commit fc56f906d3
1 changed files with 22 additions and 0 deletions
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22
kexts/drivers/tty/serialcon/main.c
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@@ -162,6 +162,16 @@ void serialcon_init(int baud)
console_register(&serialcon);
}
static void serialcon_putc(struct device *dev, int c, int xpos, int ypos, tty_attrib_t attrib)
{
unsigned int port = (uintptr_t)dev->dev_priv;
serial_putchar(port, c);
}
static struct tty_driver_ops serialcon_ops = {
.tty_putc = serialcon_putc,
};
static kern_status_t online(struct kext *self)
{
serialcon_driver = tty_driver_create(self, "ttyS");
@@ -169,6 +179,8 @@ static kern_status_t online(struct kext *self)
return KERN_NO_MEMORY;
}
serialcon_driver->tty_ops = &serialcon_ops;
tty_driver_register(serialcon_driver);
struct device *ttyS0 = tty_device_create();
@@ -176,11 +188,21 @@ static kern_status_t online(struct kext *self)
struct device *ttyS2 = tty_device_create();
struct device *ttyS3 = tty_device_create();
ttyS0->dev_priv = (void *)COM1;
ttyS1->dev_priv = (void *)COM2;
ttyS2->dev_priv = (void *)COM3;
ttyS3->dev_priv = (void *)COM4;
snprintf(ttyS0->dev_name, sizeof ttyS0->dev_name, "ttyS0");
snprintf(ttyS1->dev_name, sizeof ttyS1->dev_name, "ttyS1");
snprintf(ttyS2->dev_name, sizeof ttyS2->dev_name, "ttyS2");
snprintf(ttyS3->dev_name, sizeof ttyS3->dev_name, "ttyS3");
init_serial_port(COM1, 115200);
init_serial_port(COM2, 115200);
init_serial_port(COM3, 115200);
init_serial_port(COM4, 115200);
tty_device_register(ttyS0, serialcon_driver, misc_device());
tty_device_register(ttyS1, serialcon_driver, misc_device());
tty_device_register(ttyS2, serialcon_driver, misc_device());