[PATCH] tty: amba-pl011: add options to earlycon for 32-bit reg access
Timur Tabi
timur at codeaurora.org
Fri Nov 6 10:59:59 PST 2015
On 11/05/2015 08:44 PM, Peter Hurley wrote:
> Or better yet, for sbsa32 earlycon, just use the existing port type constructs.
> So,
>
> earlycon=pl011,mmio32,0x3ced1000
>
> which will set port->iotype to UPIO_MEM32, which in turn can be used to select
> the correct i/o width in pl011_putc().
That's a great idea. But why aren't we using it for pl011_write()?
static void pl011_write(unsigned int val, const struct uart_amba_port *uap,
unsigned int reg)
{
void __iomem *addr = uap->port.membase + pl011_reg_to_offset(uap, reg);
if (uap->port.iotype == UPIO_MEM32)
writel(val, addr);
else
writew(val, addr);
}
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