* [PATCH v2] spi:spi_bfin5xx: SPI SSEL deasserted too early in soft irq mode.
@ 2011-08-12 2:48 Sonic Zhang
2011-08-23 8:16 ` Sonic Zhang
2011-09-01 12:52 ` Barry Song
0 siblings, 2 replies; 4+ messages in thread
From: Sonic Zhang @ 2011-08-12 2:48 UTC (permalink / raw)
To: Grant Likely; +Cc: spi-devel-general, LKML, uclinux-dist-devel, Sonic Zhang
From: Sonic Zhang <sonic.zhang@analog.com>
Poll the FIFO till it is empty before deassert SSEL in pump_transfers in
soft irq mode. No polling is necessary in interrupt mode and error handling.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
---
drivers/spi/spi-bfin5xx.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
index b8d25f2..7e03e7d 100644
--- a/drivers/spi/spi-bfin5xx.c
+++ b/drivers/spi/spi-bfin5xx.c
@@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
if (message->state == DONE_STATE) {
dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n");
message->status = 0;
+ bfin_spi_flush(drv_data);
bfin_spi_giveback(drv_data);
return;
}
@@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
message->actual_length += drv_data->len_in_bytes;
/* Move to next transfer of this msg */
message->state = bfin_spi_next_transfer(drv_data);
- if (drv_data->cs_change)
+ if (drv_data->cs_change) {
+ bfin_spi_flush(drv_data);
bfin_spi_cs_deactive(drv_data, chip);
+ }
}
/* Schedule next transfer tasklet */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] spi:spi_bfin5xx: SPI SSEL deasserted too early in soft irq mode.
2011-08-12 2:48 [PATCH v2] spi:spi_bfin5xx: SPI SSEL deasserted too early in soft irq mode Sonic Zhang
@ 2011-08-23 8:16 ` Sonic Zhang
2011-09-01 12:52 ` Barry Song
1 sibling, 0 replies; 4+ messages in thread
From: Sonic Zhang @ 2011-08-23 8:16 UTC (permalink / raw)
To: Grant Likely; +Cc: spi-devel-general, LKML, uclinux-dist-devel, Sonic Zhang
Hi Grant,
Any comments?
Sonic Zhang
On Fri, Aug 12, 2011 at 10:48 AM, Sonic Zhang <sonic.adi@gmail.com> wrote:
> From: Sonic Zhang <sonic.zhang@analog.com>
>
> Poll the FIFO till it is empty before deassert SSEL in pump_transfers in
> soft irq mode. No polling is necessary in interrupt mode and error handling.
>
> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
> ---
> drivers/spi/spi-bfin5xx.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
> index b8d25f2..7e03e7d 100644
> --- a/drivers/spi/spi-bfin5xx.c
> +++ b/drivers/spi/spi-bfin5xx.c
> @@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
> if (message->state == DONE_STATE) {
> dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n");
> message->status = 0;
> + bfin_spi_flush(drv_data);
> bfin_spi_giveback(drv_data);
> return;
> }
> @@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
> message->actual_length += drv_data->len_in_bytes;
> /* Move to next transfer of this msg */
> message->state = bfin_spi_next_transfer(drv_data);
> - if (drv_data->cs_change)
> + if (drv_data->cs_change) {
> + bfin_spi_flush(drv_data);
> bfin_spi_cs_deactive(drv_data, chip);
> + }
> }
>
> /* Schedule next transfer tasklet */
> --
> 1.7.0.4
>
>
> --
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [uclinux-dist-devel] [PATCH v2] spi:spi_bfin5xx: SPI SSEL deasserted too early in soft irq mode.
@ 2011-09-01 12:52 ` Barry Song
0 siblings, 0 replies; 4+ messages in thread
From: Barry Song @ 2011-09-01 12:52 UTC (permalink / raw)
To: Sonic Zhang; +Cc: Grant Likely, spi-devel-general, LKML, uclinux-dist-devel
2011/8/12 Sonic Zhang <sonic.adi@gmail.com>:
> From: Sonic Zhang <sonic.zhang@analog.com>
>
> Poll the FIFO till it is empty before deassert SSEL in pump_transfers in
> soft irq mode. No polling is necessary in interrupt mode and error handling.
>
> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Barry Song <21cnbao@gmail.com>
it is actually making sure the last message is finished.
> ---
> drivers/spi/spi-bfin5xx.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
> index b8d25f2..7e03e7d 100644
> --- a/drivers/spi/spi-bfin5xx.c
> +++ b/drivers/spi/spi-bfin5xx.c
> @@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
> if (message->state == DONE_STATE) {
> dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n");
> message->status = 0;
> + bfin_spi_flush(drv_data);
> bfin_spi_giveback(drv_data);
> return;
> }
> @@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
> message->actual_length += drv_data->len_in_bytes;
> /* Move to next transfer of this msg */
> message->state = bfin_spi_next_transfer(drv_data);
> - if (drv_data->cs_change)
> + if (drv_data->cs_change) {
> + bfin_spi_flush(drv_data);
> bfin_spi_cs_deactive(drv_data, chip);
> + }
> }
>
> /* Schedule next transfer tasklet */
> --
> 1.7.0.4
>
>
> _______________________________________________
> Uclinux-dist-devel mailing list
> Uclinux-dist-devel@blackfin.uclinux.org
> https://blackfin.uclinux.org/mailman/listinfo/uclinux-dist-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [uclinux-dist-devel] [PATCH v2] spi:spi_bfin5xx: SPI SSEL deasserted too early in soft irq mode.
@ 2011-09-01 12:52 ` Barry Song
0 siblings, 0 replies; 4+ messages in thread
From: Barry Song @ 2011-09-01 12:52 UTC (permalink / raw)
To: Sonic Zhang
Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f, LKML,
uclinux-dist-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b
2011/8/12 Sonic Zhang <sonic.adi@gmail.com>:
> From: Sonic Zhang <sonic.zhang@analog.com>
>
> Poll the FIFO till it is empty before deassert SSEL in pump_transfers in
> soft irq mode. No polling is necessary in interrupt mode and error handling.
>
> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Barry Song <21cnbao@gmail.com>
it is actually making sure the last message is finished.
> ---
> drivers/spi/spi-bfin5xx.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
> index b8d25f2..7e03e7d 100644
> --- a/drivers/spi/spi-bfin5xx.c
> +++ b/drivers/spi/spi-bfin5xx.c
> @@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
> if (message->state == DONE_STATE) {
> dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n");
> message->status = 0;
> + bfin_spi_flush(drv_data);
> bfin_spi_giveback(drv_data);
> return;
> }
> @@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
> message->actual_length += drv_data->len_in_bytes;
> /* Move to next transfer of this msg */
> message->state = bfin_spi_next_transfer(drv_data);
> - if (drv_data->cs_change)
> + if (drv_data->cs_change) {
> + bfin_spi_flush(drv_data);
> bfin_spi_cs_deactive(drv_data, chip);
> + }
> }
>
> /* Schedule next transfer tasklet */
> --
> 1.7.0.4
>
>
> _______________________________________________
> Uclinux-dist-devel mailing list
> Uclinux-dist-devel@blackfin.uclinux.org
> https://blackfin.uclinux.org/mailman/listinfo/uclinux-dist-devel
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^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-08-12 2:48 [PATCH v2] spi:spi_bfin5xx: SPI SSEL deasserted too early in soft irq mode Sonic Zhang
2011-08-23 8:16 ` Sonic Zhang
2011-09-01 12:52 ` [uclinux-dist-devel] " Barry Song
2011-09-01 12:52 ` Barry Song
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