Subject: [PATCH] tty: amba-pl011: add options to earlycon for 32-bit reg access

From: [email-masked] (Timur Tabi)
Date: Fri, 6 Nov 2015 12:59:59 -0600

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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