On Wed, 2013-07-24 at 14:06 +0100, Luis Alves wrote:
> Hi,
> Removed wrong description in the header file. Sorry about that...
>
> New patch for this issue. Changes:
> - Added flatiron readreg and writereg functions prototypes (new header file).
> - Modified the av work handler to preserve all other register bits when
> dealing
> with the interrupt flag.
>
> Regards,
> Luis
>
>
> Signed-off-by: Luis Alves <lja...@gmail.com>
Looks OK to me.
Theoretically you did'nt need to bitwise-OR in the 0x80, e.g.
cx23885_flatiron_write(dev, 0x1f,
cx23885_flatiron_read(dev, 0x1f));
should work as well, since the set interrupt status bit will clear that
bit on the write back of the bit.
But this patch is good enough. :)
Acked-by: Andy Walls <awa...@md.metrocast.net>
> ---
> drivers/media/pci/cx23885/cx23885-av.c | 13 +++++++++++++
> drivers/media/pci/cx23885/cx23885-video.c | 4 ++--
> drivers/media/pci/cx23885/cx23885-video.h | 26 ++++++++++++++++++++++++++
> 3 files changed, 41 insertions(+), 2 deletions(-)
> create mode 100644 drivers/media/pci/cx23885/cx23885-video.h
>
> diff --git a/drivers/media/pci/cx23885/cx23885-av.c
> b/drivers/media/pci/cx23885/cx23885-av.c
> index e958a01..c443b7a 100644
> --- a/drivers/media/pci/cx23885/cx23885-av.c
> +++ b/drivers/media/pci/cx23885/cx23885-av.c
> @@ -23,6 +23,7 @@
>
> #include "cx23885.h"
> #include "cx23885-av.h"
> +#include "cx23885-video.h"
>
> void cx23885_av_work_handler(struct work_struct *work)
> {
> @@ -32,5 +33,17 @@ void cx23885_av_work_handler(struct work_struct *work)
>
> v4l2_subdev_call(dev->sd_cx25840, core, interrupt_service_routine,
> PCI_MSK_AV_CORE, &handled);
> +
> + /* Getting here with the interrupt not handled
> + then probbaly flatiron does have pending interrupts.
> + */
> + if (!handled) {
> + /* clear left and right adc channel interrupt request flag */
> + cx23885_flatiron_write(dev, 0x1f,
> + cx23885_flatiron_read(dev, 0x1f) | 0x80);
> + cx23885_flatiron_write(dev, 0x23,
> + cx23885_flatiron_read(dev, 0x23) | 0x80);
> + }
> +
> cx23885_irq_enable(dev, PCI_MSK_AV_CORE);
> }
> diff --git a/drivers/media/pci/cx23885/cx23885-video.c
> b/drivers/media/pci/cx23885/cx23885-video.c
> index e33d1a7..f4e7cef 100644
> --- a/drivers/media/pci/cx23885/cx23885-video.c
> +++ b/drivers/media/pci/cx23885/cx23885-video.c
> @@ -417,7 +417,7 @@ static void res_free(struct cx23885_dev *dev, struct
> cx23885_fh *fh,
> mutex_unlock(&dev->lock);
> }
>
> -static int cx23885_flatiron_write(struct cx23885_dev *dev, u8 reg, u8 data)
> +int cx23885_flatiron_write(struct cx23885_dev *dev, u8 reg, u8 data)
> {
> /* 8 bit registers, 8 bit values */
> u8 buf[] = { reg, data };
> @@ -428,7 +428,7 @@ static int cx23885_flatiron_write(struct cx23885_dev
> *dev, u8 reg, u8 data)
> return i2c_transfer(&dev->i2c_bus[2].i2c_adap, &msg, 1);
> }
>
> -static u8 cx23885_flatiron_read(struct cx23885_dev *dev, u8 reg)
> +u8 cx23885_flatiron_read(struct cx23885_dev *dev, u8 reg)
> {
> /* 8 bit registers, 8 bit values */
> int ret;
> diff --git a/drivers/media/pci/cx23885/cx23885-video.h
> b/drivers/media/pci/cx23885/cx23885-video.h
> new file mode 100644
> index 0000000..c961a2b
> --- /dev/null
> +++ b/drivers/media/pci/cx23885/cx23885-video.h
> @@ -0,0 +1,26 @@
> +/*
> + * Driver for the Conexant CX23885/7/8 PCIe bridge
> + *
> + * Copyright (C) 2010 Andy Walls <awa...@md.metrocast.net>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version 2
> + * of the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> + * 02110-1301, USA.
> + */
> +
> +#ifndef _CX23885_VIDEO_H_
> +#define _CX23885_VIDEO_H_
> +int cx23885_flatiron_write(struct cx23885_dev *dev, u8 reg, u8 data);
> +u8 cx23885_flatiron_read(struct cx23885_dev *dev, u8 reg);
> +#endif
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