Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1249894

Re: [v7] serial: 8250_dw: Add support for big-endian MMIO accesses

Show all headers | View raw

On Tue, Oct 06, 2015 at 11:53:30AM +0300, Noam Camus wrote:
> From: Noam Camus <noamc@ezchip.com>
> 
> Add support for UPIO_MEM32BE in addition to UPIO_MEM32.
> dw8250_serial_out32() extra functionality that is not part of
> the 8250 core driver was moved to new function called
> dw8250_check_LCR().
> 
> For big endian we use 2 new accessors similar to little endian,
> called dw8250_serial_out32be() and dw8250_serial_in32be().
> Both little and big endian accessors use dw8250_check_LCR()
> for their dw8250_serial_out32{,be}().
> 
> In addition I added another 2 accessors inside private_data field of
> uart_port. This second level accessors are set during probe in
> private_data field of uart_port. Now any direct call to readl/writel
> is replaced with those accessors which are endianness aware.
> 
> Last issue:
> readl() for UCV and CPR will not work for port type UPIO_MEM32BE.
> Instead we use the serial_in32() accessor which is initialized
> properly according to endianness.
> 
> Signed-off-by: Noam Camus <noamc@ezchip.com>
> ---
>  drivers/tty/serial/8250/8250_dw.c |   72 ++++++++++++++++++++++++++++++++----
>  1 files changed, 64 insertions(+), 8 deletions(-)

This patch still doesn't apply at all to my tty-next branch, what are
you making it against?

Please fix it up and resend.

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Re: [v7] serial: 8250_dw: Add support for big-endian MMIO accesses Greg KH <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
  RE: [v7] serial: 8250_dw: Add support for big-endian MMIO accesses Noam Camus <noamc@ezchip.com> - 2015-10-18 07:40 +0200
    Re: [v7] serial: 8250_dw: Add support for big-endian MMIO accesses Greg KH <gregkh@linuxfoundation.org> - 2015-10-18 08:00 +0200

csiph-web