diff options
| author | Chris Brandt <chris.brandt@renesas.com> | 2019-05-15 18:20:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-21 11:25:59 +0300 |
| commit | f756066990607dbe8ea5579c925b48e646891f3e (patch) | |
| tree | e2cb8b70920d5f003621e48ec055eca111ec7628 /drivers/usb/renesas_usbhs | |
| parent | 2195e3af9079ea067079e98446ea6a457c81a98c (diff) | |
| download | linux-f756066990607dbe8ea5579c925b48e646891f3e.tar.xz | |
usb: renesas_usbhs: support byte addressable CFIFO
Some SoC have a CFIFO register that is byte addressable. This means
when the CFIFO access is set to 32-bit, you can write 8-bit values to
addresses CFIFO+0, CFIFO+1, CFIFO+2, CFIFO+3.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/renesas_usbhs')
| -rw-r--r-- | drivers/usb/renesas_usbhs/fifo.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 39fa2fc1b8b7..452b456ac24e 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -543,8 +543,13 @@ static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done) } /* the rest operation */ - for (i = 0; i < len; i++) - iowrite8(buf[i], addr + (0x03 - (i & 0x03))); + if (usbhs_get_dparam(priv, cfifo_byte_addr)) { + for (i = 0; i < len; i++) + iowrite8(buf[i], addr + (i & 0x03)); + } else { + for (i = 0; i < len; i++) + iowrite8(buf[i], addr + (0x03 - (i & 0x03))); + } /* * variable update |