The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.
Signed-off-by: Gabor Juhos
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
---
.../include/asm/mach-ath79/ath79_spi_platform.h| 19 ++
drivers/spi/Kconfig
The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.
Signed-off-by: Gabor Juhos
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
---
Sorry for sending this twice, i forgot to add some CCs in the first round.
.../include
Hi Grant,
>> <...>
>> +#include
>> +
>> +#define DRV_DESC"SPI controller driver for Atheros AR71XX/AR724X/AR91X"
>
> Used exactly once. Don't bother with a #define
Ok.
>> +#define DRV_NAME"ath79-spi"
>> +
>> +struct ath79_spi {
>> +struct spi_bitbang bitbang;
>> +u32
2010.11.15. 5:04 keltezéssel, Grant Likely írta:
> On Sun, Nov 14, 2010 at 10:03:56PM +0100, Gabor Juhos wrote:
>>>> +static inline u32 ath79_spi_rr(struct ath79_spi *sp, unsigned reg)
>>>> +{
>>>> + return __raw_readl(sp->base + reg);
>>>>
The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.
Signed-off-by: Gabor Juhos
Cc: Grant Likely
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
---
Changes since RFC:
- remove DRV_DESC definition and use its
The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.
Signed-off-by: Gabor Juhos
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
---
Changes since RFC:
- remove DRV_DESC definition and use its previous value directly
The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.
Signed-off-by: Gabor Juhos
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
---
Changes since RFC:
- remove DRV_DESC definition and use its previous value directly
The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.
Signed-off-by: Gabor Juhos
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
---
Changes since RFC:
- remove DRV_DESC definition and use its previous value directly in
2011.01.03. 18:02 keltezéssel, Grant Likely írta:
> On Sun, Jan 02, 2011 at 07:56:22PM +0100, Gabor Juhos wrote:
>> The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
>> patch implements a driver for that.
>>
>
> Mostly looks okay to me. A few c
The Atheros AR71XX/AR724X/AR913X SoCs have a built-in SPI controller. This
patch implements a driver for that.
Signed-off-by: Gabor Juhos
Cc: David Brownell
Cc: spi-devel-general@lists.sourceforge.net
Acked-by: Grant Likely
---
Changes since RFC:
- remove DRV_DESC definition and use its
x27;...'
before string constant
drivers/spi/spi-ath79.c:281:1: warning: data definition has no type or storage
class
drivers/spi/spi-ath79.c:281:1: warning: type defaults to 'int' in declaration
of 'MODULE_ALIAS'
drivers/spi/spi-ath79.c:281:14: warning: function decla
The driver uses the "as fast as it can" approach
to drive the SCK signal. However this does not
work with certain low speed SPI chips (e.g. the
PCF2123 RTC chip).
The patch adds per-bit slowdowns in order to be
able to use the driver with such chips as well.
Signed-off-by: G
The 'ath79_spi_txrx_mode0' function does not
set the SCK signal to LOW at the end of a word
transfer. This causes communications errors with
certain devices (e.g. the PCF2123 RTC chip).
The patch ensures that the SCK signal will be LOW.
Signed-off-by: Gabor Juhos
---
drivers/spi/s
a kexec'd
kernel because the SPI driver does not restore
the special mode during shutdown.
The patch adds a shutdown handler to fix this
issue.
Signed-off-by: Gabor Juhos
---
drivers/spi/spi-ath79.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/driver
Use gpio_request_one() instead of multiple gpiolib calls.
Signed-off-by: Gabor Juhos
---
drivers/spi/spi-ath79.c | 22 +++---
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c
index a725e62..19d539e 100644
--- a
This patch set contain various fixes for the spi-ath79 driver.
Gabor Juhos (6):
spi/ath79: add delay between SCK changes
spi/ath79: add missing HIGH->LOW SCK transition
spi/ath79: remove superfluous chip select code
spi/ath79: use gpio_request_one
spi/ath79: avoid multi
The spi_bitbang driver calls the chipselect function
of the driver from spi_bitbang_setup in order to
deselect the given SPI chip, so we don't have to
initialize the CS line here.
Signed-off-by: Gabor Juhos
---
drivers/spi/spi-ath79.c |6 --
1 file changed, 6 deletions(-)
diff --
those from probe/response in order to avoid
the mutliple initialization of the controller.
Signed-off-by: Gabor Juhos
---
drivers/spi/spi-ath79.c | 41 -
1 file changed, 24 insertions(+), 17 deletions(-)
diff --git a/drivers/spi/spi-ath79.c b/drivers/spi
Hi Grant,
> On Thu, 27 Dec 2012 10:42:24 +0100, Gabor Juhos wrote:
>> The driver uses the "as fast as it can" approach
>> to drive the SCK signal. However this does not
>> work with certain low speed SPI chips (e.g. the
>> PCF2123 RTC chip).
>>
>>
2013.02.05. 14:02 keltezéssel, Grant Likely írta:
>> -static int ath79_spi_remove(struct platform_device *pdev)
>> +static void __ath79_spi_remove(struct platform_device *pdev)
>> {
>> struct ath79_spi *sp = platform_get_drvdata(pdev);
>>
>> @@ -304,13 +304,23 @@ static int ath79_spi_remov
a kexec'd
kernel because the SPI driver does not restore
the special mode during shutdown.
The patch adds a shutdown handler to fix this
issue.
Signed-off-by: Gabor Juhos
---
Changes since v1:
- call ath79_spi_remote(pdev) directly from ath79_spi_shutdown()
---
drivers/spi/spi-ath79.c |
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