Commit 9d506fc6 authored by Tony Lindgren's avatar Tony Lindgren Committed by Felipe Balbi
Browse files

usb: musb: Populate new IO functions for tusb6010 



Let's populate the new IO functions for tusb6010 but not use
them yet.

Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 5450ac88

drivers/usb/musb/tusb6010.c

+41 −0
Original line number Diff line number Diff line
@@ -126,6 +126,41 @@ static void tusb_wbus_quirk(struct musb *musb, int enabled) 
	}

}



static u32 tusb_fifo_offset(u8 epnum)

{

	return 0x200 + (epnum * 0x20);

}



/*

 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.

 */

static u8 tusb_readb(const void __iomem *addr, unsigned offset)

{

	u16 tmp;

	u8 val;



	tmp = __raw_readw(addr + (offset & ~1));

	if (offset & 1)

		val = (tmp >> 8);

	else

		val = tmp & 0xff;



	return val;

}



static void tusb_writeb(void __iomem *addr, unsigned offset, u8 data)

{

	u16 tmp;



	tmp = __raw_readw(addr + (offset & ~1));

	if (offset & 1)

		tmp = (data << 8) | (tmp & 0xff);

	else

		tmp = (tmp & 0xff00) | data;



	__raw_writew(tmp, addr + (offset & ~1));

}



/*

 * TUSB 6010 may use a parallel bus that doesn't support byte ops;

 * so both loading and unloading FIFOs need explicit byte counts.
@@ -1135,9 +1170,15 @@ static int tusb_musb_exit(struct musb *musb) 
}



static const struct musb_platform_ops tusb_ops = {

	.quirks		= MUSB_IN_TUSB,

	.init		= tusb_musb_init,

	.exit		= tusb_musb_exit,



	.fifo_offset	= tusb_fifo_offset,

	.readb		= tusb_readb,

	.writeb		= tusb_writeb,

	.read_fifo	= musb_read_fifo,

	.write_fifo	= musb_write_fifo,

	.enable		= tusb_musb_enable,

	.disable	= tusb_musb_disable,