31.01.2019 19:27, Dmitry Osipenko пишет:
> 31.01.2019 19:01, Thierry Reding пишет:
>> On Thu, Jan 31, 2019 at 06:02:45PM +0300, Dmitry Osipenko wrote:
>>> 31.01.2019 17:43, Thierry Reding пишет:
On Thu, Jan 31, 2019 at 05:06:18PM +0300, Dmitry Osipenko wrote:
> 31.01.2019 15:06, Thierry Re
31.01.2019 21:08, Dmitry Osipenko пишет:
> 31.01.2019 19:55, Dmitry Osipenko пишет:
> +config I2C_TEGRA_DMA_SUPPORT
> + bool "NVIDIA Tegra internal I2C controller DMA support"
> + depends on I2C_TEGRA
> + depends on TEGRA20_APB_DMA && ARCH_TEGRA_2x_SOC
> + depends on TEGRA20_APB_DMA
31.01.2019 19:55, Dmitry Osipenko пишет:
> config I2C_TEGRA
> tristate "NVIDIA Tegra internal I2C controller"
> depends on ARCH_TEGRA
> select TEGRA20_APB_DMA if (I2C_TEGRA_DMA_SUPPORT && ARCH_TEGRA_2x_SOC)
> select TEGRA20_APB_DMA if (I2C_TEGRA_DMA_SUPPORT && ARCH_TEGRA_3x_
31.01.2019 18:02, Dmitry Osipenko пишет:
> 31.01.2019 17:43, Thierry Reding пишет:
>> On Thu, Jan 31, 2019 at 05:06:18PM +0300, Dmitry Osipenko wrote:
>>> 31.01.2019 15:06, Thierry Reding пишет:
On Thu, Jan 31, 2019 at 03:05:48AM +0300, Dmitry Osipenko wrote:
> 30.01.2019 19:01, Sowjanya K
31.01.2019 19:01, Thierry Reding пишет:
> On Thu, Jan 31, 2019 at 06:02:45PM +0300, Dmitry Osipenko wrote:
>> 31.01.2019 17:43, Thierry Reding пишет:
>>> On Thu, Jan 31, 2019 at 05:06:18PM +0300, Dmitry Osipenko wrote:
31.01.2019 15:06, Thierry Reding пишет:
> On Thu, Jan 31, 2019 at 03:05
31.01.2019 19:27, Dmitry Osipenko пишет:
> 31.01.2019 19:01, Thierry Reding пишет:
>> On Thu, Jan 31, 2019 at 06:02:45PM +0300, Dmitry Osipenko wrote:
>>> 31.01.2019 17:43, Thierry Reding пишет:
On Thu, Jan 31, 2019 at 05:06:18PM +0300, Dmitry Osipenko wrote:
> 31.01.2019 15:06, Thierry Re
On Thu, Jan 31, 2019 at 06:02:45PM +0300, Dmitry Osipenko wrote:
> 31.01.2019 17:43, Thierry Reding пишет:
> > On Thu, Jan 31, 2019 at 05:06:18PM +0300, Dmitry Osipenko wrote:
> >> 31.01.2019 15:06, Thierry Reding пишет:
> >>> On Thu, Jan 31, 2019 at 03:05:48AM +0300, Dmitry Osipenko wrote:
>
31.01.2019 17:43, Thierry Reding пишет:
> On Thu, Jan 31, 2019 at 05:06:18PM +0300, Dmitry Osipenko wrote:
>> 31.01.2019 15:06, Thierry Reding пишет:
>>> On Thu, Jan 31, 2019 at 03:05:48AM +0300, Dmitry Osipenko wrote:
30.01.2019 19:01, Sowjanya Komatineni пишет:
>>> [...]
> diff --git a/d
On Thu, Jan 31, 2019 at 05:06:18PM +0300, Dmitry Osipenko wrote:
> 31.01.2019 15:06, Thierry Reding пишет:
> > On Thu, Jan 31, 2019 at 03:05:48AM +0300, Dmitry Osipenko wrote:
> >> 30.01.2019 19:01, Sowjanya Komatineni пишет:
> > [...]
> >>> diff --git a/drivers/i2c/busses/i2c-tegra.c
> >>> b/driv
31.01.2019 15:06, Thierry Reding пишет:
> On Thu, Jan 31, 2019 at 03:05:48AM +0300, Dmitry Osipenko wrote:
>> 30.01.2019 19:01, Sowjanya Komatineni пишет:
> [...]
>>> diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
> [...]
>>> + return -EIO;
>>> + }
>>> +
>>
On Thu, Jan 31, 2019 at 03:05:48AM +0300, Dmitry Osipenko wrote:
> 30.01.2019 19:01, Sowjanya Komatineni пишет:
[...]
> > diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
[...]
> > + return -EIO;
> > + }
> > +
> > + dma_desc->callback = tegra_i2c_dma_comple
В Thu, 31 Jan 2019 03:34:59 +
Sowjanya Komatineni пишет:
> > I2C_INT_ALL_PACKETS_XFER_COMPLETE shall be masked for the PIO mode
> > I2C_INT_PACKET_XFER_COMPLETE shall be masked for the DMA mode, if
> > I'm not missing something.
> for packets with repeated start or continue xfer,
> PACKET_XF
> I2C_INT_ALL_PACKETS_XFER_COMPLETE shall be masked for the PIO mode
> I2C_INT_PACKET_XFER_COMPLETE shall be masked for the DMA mode, if I'm not
> missing something.
>
for packets with repeated start or continue xfer, PACKET_XFER_COMPLETE will be
triggers
for packets with stop bit, both PACKET_XF
31.01.2019 5:24, Sowjanya Komatineni пишет:
> time_left = wait_for_completion_timeout(&i2c_dev->msg_complete,
> TEGRA_I2C_TIMEOUT);
> tegra_i2c_mask_irq(i2c_dev, int_mask);
>
> if (time_left == 0) {
> dev_err(i2c_de
> >>> time_left = wait_for_completion_timeout(&i2c_dev->msg_complete,
> >>> TEGRA_I2C_TIMEOUT);
> >>> tegra_i2c_mask_irq(i2c_dev, int_mask);
> >>>
> >>> if (time_left == 0) {
> >>> dev_err(i2c_dev->dev, "i2c transfer timed out\n");
> >>> +
31.01.2019 4:19, Sowjanya Komatineni пишет:
>>> + dma_sync_single_for_device(i2c_dev->dev,
>>> + i2c_dev->dma_phys,
>>> + xfer_size,
>>> + DMA_FRO
> > + dma_sync_single_for_device(i2c_dev->dev,
> > + i2c_dev->dma_phys,
> > + xfer_size,
> > + DMA_FROM_DEVICE);
> > + ret = teg
30.01.2019 19:01, Sowjanya Komatineni пишет:
> This patch adds DMA support for Tegra I2C.
>
> Tegra I2C TX and RX FIFO depth is 8 words. PIO mode is used for
> transfer size of the max FIFO depth and DMA mode is used for
> transfer size higher than max FIFO depth to save CPU overhead.
>
> PIO mod
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