This implements a very basic I2C host driver for the BCM2835 SoC. Missing
features so far are:
* 10-bit addressing.
* DMA.
Signed-off-by: Stephen Warren
---
v2:
* Implemented clock divider configuration based on desired bus rate.
* Make use of module_platform_driver().
* Removed use of devinit.
This patch corrects checkpatch errors.
The changes has also been removed as it has less meaning with version
control tools.
Signed-off-by: Amaury Decrême
---
drivers/i2c/busses/i2c-sis630.c | 210
1 file changed, 106 insertions(+), 104 deletions(-)
diff
This patch corrects the display of the acpi_base unsigned hex value.
Signed-off-by: Amaury Decrême
---
drivers/i2c/busses/i2c-sis630.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c
index b2fa741..424545b 1006
This patch replaces hexadecimal values by constants for SMBus commands.
Signed-off-by: Amaury Decrême
---
drivers/i2c/busses/i2c-sis630.c | 45 -
1 file changed, 31 insertions(+), 14 deletions(-)
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/
Datasheet on collision:
SMBus Collision (SMBCOL_STS)
This bit is set when a SMBus Collision condition occurs and
SMBus Host loses in the bus arbitration. The software should
clear this bit and re-start SMBus operation.
As the status will be cleared in transaction_en
The sticky bits must be cleared at the end of the transaction by writing
a 1 to all fields.
Datasheet:
SMBus Status (SMB_STS)
The following registers are all sticky bits and only can be
cleared by writing a one to their corresponding fields.
Signed-off-by: Amaury Decrême
Signed-off-by: Amaury Decrême
---
Documentation/i2c/busses/i2c-sis630 | 9
drivers/i2c/busses/Kconfig | 4 +-
drivers/i2c/busses/i2c-sis630.c | 88 -
3 files changed, 69 insertions(+), 32 deletions(-)
diff --git a/Documentation/i2c/busses/i
Those patches add sis964 support to i2c-sis630.
The SiS datasheets have been used.
The SiS964 isn't part of the SIS96X family and behaves like the SiS630
chip family.
For I2C, this array show the differences between a SiS630 and a SiS964.
+++-
On Mon, Jan 28, 2013 at 07:40:07PM +0100, Jean Delvare wrote:
> > Some "80 columns" warnings have been expressly omitted to keep reading
> > easy.
>
> You can get rid of these too by splitting the affected lines. You do
> not have to split the strings themselves, but the other parameters can
> be
On Mon, Jan 28, 2013 at 07:33:04PM +0100, Jean Delvare wrote:
> > - dev_dbg(&adap->dev, "SMBus busy (%02x). Resetting...\n", temp);
> > + dev_dbg(&adap->dev, "SMBus busy (%02hx). Resetting...\n", temp);
>
> %hx is for shorts, not bytes. There is no format specifier for shorts,
On Mon, Jan 28, 2013 at 06:42:33PM +0100, Jean Delvare wrote:
>
> Good idea, however you missed one occurrence of BYTE_DONE_STS in
> sis630_transaction_wait().
>
Thanks, corrected.
--
Amaury Decrême
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The iSMT (Intel SMBus Message Transport) supports multi-master I2C/SMBus,
as well as IPMI. It's operation is DMA-based and utilizes descriptors to
initiate transactions on the bus.
The iSMT hardware can act as both a master and a target, although this
driver only supports being a master.
Signed-
On Fri, 4 Jan 2013 14:13:35 +0100, Amaury Decrême wrote:
> This patch corrects checkpatch errors.
> Some "80 columns" warnings have been expressly omitted to keep reading
> easy.
You can get rid of these too by splitting the affected lines. You do
not have to split the strings themselves, but the
On Fri, 4 Jan 2013 14:13:34 +0100, Amaury Decrême wrote:
> This patch corrects the display of unsigned hex values.
>
> Signed-off-by: Amaury Decrême
> ---
> drivers/i2c/busses/i2c-sis630.c | 25 ++---
> 1 files changed, 14 insertions(+), 11 deletions(-)
>
> diff --git a/dr
On Fri, 4 Jan 2013 14:13:33 +0100, Amaury Decrême wrote:
> This patch replaces hexadecimal values by constants for SMBus commands
> and bit masks.
>
> Signed-off-by: Amaury Decrême
> ---
> drivers/i2c/busses/i2c-sis630.c | 45 ++
> 1 files changed, 31 inser
On Fri, 4 Jan 2013 14:13:32 +0100, Amaury Decrême wrote:
> Datasheet on collision:
> SMBus Collision (SMBCOL_STS)
> This bit is set when a SMBus Collision condition occurs and
> SMBus Host loses in the bus arbitration. The software should
> clear this bit and re-start SMBus
On Fri, 4 Jan 2013 14:13:31 +0100, Amaury Decrême wrote:
> The sticky bits must be cleared at the end of the transaction by writing
> a 1 to all fields.
>
> Datasheet:
> SMBus Status (SMB_STS)
> The following registers are all sticky bits and only can be
> cleared by writing a o
On Fri, 4 Jan 2013 14:13:30 +0100, Amaury Decrême wrote:
> Signed-off-by: Amaury Decrême
> ---
> Documentation/i2c/busses/i2c-sis630 |9
> drivers/i2c/busses/Kconfig |4 +-
> drivers/i2c/busses/i2c-sis630.c | 88
> +++
> 3 files change
On Mon, 28 Jan 2013 10:44:12 +0100, Alexander Stein wrote:
> It was observed the Host Clock Divider was not written by the driver. It
> was still set to (default) 0, if not already set by BIOS, which caused
> garbage on SMBus.
> This driver adds a parameters which is used to calculate the divider
>
On Thursday 24 January 2013 at 08:27:01, Wolfram Sang wrote:
> > > > > > I wanted to use a fm24c04 i2c fram chip with linux. I grepped
> > > > > > the source and found nothing. I later found that my chip can be
> > > > > > handled by at24 eeprom driver. It creates a sysfs file called
> > > > > > ee
It was observed the Host Clock Divider was not written by the driver. It
was still set to (default) 0, if not already set by BIOS, which caused
garbage on SMBus.
This driver adds a parameters which is used to calculate the divider
appropriately for a default bitrate of 100 KHz. This new divider is
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