This set covers changes required to allow user space to clear logged faults
on ucd9000 type devices via sysfs. A write to this new file with any value
will perform the clear operation.
Patch 1: Document new sysfs file.
Patch 2: Implementation of new file and clear process.
Christopher Bostic
Create an attribute to allow clearing of logged faults.
Signed-off-by: Christopher Bostic
---
Documentation/hwmon/ucd9000 | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/hwmon/ucd9000 b/Documentation/hwmon/ucd9000
index 262e713..de7f7f23 100644
--- a/Documentation/hwmon
Add ability to clear logged faults via sysfs.
Signed-off-by: Christopher Bostic
---
drivers/hwmon/pmbus/ucd9000.c | 45 ++-
1 file changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/pmbus/ucd9000.c b/drivers/hwmon/pmbus/ucd9000.c
index
On 8/15/17 3:10 AM, Joel Stanley wrote:
On Tue, Aug 15, 2017 at 4:06 PM, Peter Rosin wrote:
On 2017-07-26 19:13, Eddie James wrote:
From: "Edward A. James"
This series adds an algorithm for an I2C master physically located on an FSI
slave device. The I2C master has multiple ports, each of
dog timeout.
Signed-off-by: Christopher Bostic
---
v5 - Add explicit check for property type "none". Return error
if property type is not a known value.
- Default reset type when no property present changed to
match original code: SOC + SYSTEM reset
v4 - Change the three
y)
* aspeed,alt-boot - Boot from alternate block on signal
Signed-off-by: Christopher Bostic
---
v5 - Removed aspeed,interrupt property - no plans at this point to
need this functionality in the driver.
v4 - Add aspeed-reset-type and assign one of four values,
cpu, soc, system, none.
Document device tree optional properties for ASPEED watchdog.
Reference properties in ASPEED watchdog driver and configure accordingly.
Christopher Bostic (2):
drivers/watchdog: Add optional ASPEED device tree properties
drivers/watchdog: ASPEED reference dev tree properties for config
On 7/8/17 9:59 AM, Guenter Roeck wrote:
On Thu, Jul 06, 2017 at 07:48:59PM -0500, Christopher Bostic wrote:
Describe device tree optional properties:
* aspeed,reset-type = "cpu|soc|system|none"
One of three different, mutually exclusive, values
"cpu"
On 7/8/17 9:55 AM, Guenter Roeck wrote:
On Thu, Jul 06, 2017 at 07:49:00PM -0500, Christopher Bostic wrote:
Reference the system device tree when configuring the watchdog
engines. If property 'aspeed,reset_type' is present then set
reset behavior based on the specified value. This
Generate external signal (WDT1 and WDT2 only)
* aspeed,alt-boot - Boot from alternate block on signal
Signed-off-by: Christopher Bostic
---
v4 - Add aspeed-reset-type and assign one of four values,
cpu, soc, system, none.
v3 - Invert soc and sys reset to 'no' to preserve b
Document device tree optional properties for ASPEED watchdog.
Reference properties in ASPEED watchdog driver and configure accordingly.
Christopher Bostic (2):
drivers/watchdog: Add optional ASPEED device tree properties
drivers/watchdog: ASPEED reference dev tree properties for config
dog timeout.
Signed-off-by: Christopher Bostic
---
v4 - Change the three reset type parameters to a new property
'aspeed,reset_type' and check assignment for one of four
different values, cpu, soc, system, none
v3 - Invert the logic for system reset dev tree property to
pr
On 7/6/17 3:48 PM, Guenter Roeck wrote:
On Thu, Jul 06, 2017 at 02:27:18PM -0500, Christopher Bostic wrote:
On 7/6/17 9:35 AM, Rob Herring wrote:
On Thu, Jun 29, 2017 at 08:04:17AM -0700, Guenter Roeck wrote:
On Thu, Jun 29, 2017 at 08:39:59AM -0500, Christopher Bostic wrote:
On 6/28/17
On 7/6/17 9:35 AM, Rob Herring wrote:
On Thu, Jun 29, 2017 at 08:04:17AM -0700, Guenter Roeck wrote:
On Thu, Jun 29, 2017 at 08:39:59AM -0500, Christopher Bostic wrote:
On 6/28/17 10:33 PM, Guenter Roeck wrote:
On 06/28/2017 05:28 PM, Christopher Bostic wrote:
Describe device tree
On 6/28/17 10:33 PM, Guenter Roeck wrote:
On 06/28/2017 05:28 PM, Christopher Bostic wrote:
Describe device tree optional properties:
* aspeed,arm-reet - ARM CPU reset on signal
* aspeed,no-soc-reset - SOC reset on signal
* aspeed,no-sys-reset - System reset on signal
* aspeed
WDT2 only)
* aspeed,alt-boot - Boot from alternate block on signal
Signed-off-by: Christopher Bostic
---
v3 - Invert soc and sys reset to 'no' to preserve backwards
compatibility. SOC and SYS reset will be set by default
without any optional parameters set
v2 - Add 'asp
do not set soc reset mode.
Signed-off-by: Christopher Bostic
---
v3 - Invert the logic for system reset dev tree property to
preserve backwards compatibility. If not specified the
default is to configure for system reset
- Add check for 'aspeed,no-soc-reset' property and o
Document device tree optional properties for ASPEED watchdog.
Reference properties in ASPEED watchdog driver and configure accordingly.
Christopher Bostic (2):
drivers/watchdog: Add optional ASPEED device tree properties
drivers/watchdog: ASPEED reference dev tree properties for config
On 6/28/17 11:06 AM, Guenter Roeck wrote:
On Wed, Jun 28, 2017 at 10:55:08AM -0500, Christopher Bostic wrote:
On 6/28/17 10:08 AM, Guenter Roeck wrote:
On Wed, Jun 28, 2017 at 09:59:22AM -0500, Christopher Bostic wrote:
On 6/28/17 9:54 AM, Guenter Roeck wrote:
On Wed, Jun 28, 2017 at 09
On 6/28/17 10:08 AM, Guenter Roeck wrote:
On Wed, Jun 28, 2017 at 09:59:22AM -0500, Christopher Bostic wrote:
On 6/28/17 9:54 AM, Guenter Roeck wrote:
On Wed, Jun 28, 2017 at 09:29:50AM -0500, Christopher Bostic wrote:
On 6/28/17 6:31 AM, Guenter Roeck wrote:
On 06/27/2017 02:17 PM
On 6/28/17 9:54 AM, Guenter Roeck wrote:
On Wed, Jun 28, 2017 at 09:29:50AM -0500, Christopher Bostic wrote:
On 6/28/17 6:31 AM, Guenter Roeck wrote:
On 06/27/2017 02:17 PM, Christopher Bostic wrote:
Reference the system device tree when configuring the watchdog
engines. Set external
On 6/27/17 5:07 PM, Guenter Roeck wrote:
On Tue, Jun 27, 2017 at 04:42:24PM -0500, Christopher Bostic wrote:
On 6/27/17 4:32 PM, Guenter Roeck wrote:
On Tue, Jun 27, 2017 at 04:17:33PM -0500, Christopher Bostic wrote:
Describe device tree optional properties:
* aspeed,arm-reet - ARM
On 6/28/17 6:31 AM, Guenter Roeck wrote:
On 06/27/2017 02:17 PM, Christopher Bostic wrote:
Reference the system device tree when configuring the watchdog
engines. Set external signal mode on timeout if specified.
Set system reset on timeout if specified.
Signed-off-by: Christopher Bostic
On 6/27/17 4:32 PM, Guenter Roeck wrote:
On Tue, Jun 27, 2017 at 04:17:33PM -0500, Christopher Bostic wrote:
Describe device tree optional properties:
* aspeed,arm-reet - ARM CPU reset on signal
* aspeed,soc-reset - SOC reset on signal
* aspeed,sys-reset - System reset on signal
Reference the system device tree when configuring the watchdog
engines. Set external signal mode on timeout if specified.
Set system reset on timeout if specified.
Signed-off-by: Christopher Bostic
---
v2 - Change of_get_property() to of_property_read_bool()
- Remove redundant check for NULL
system is responsible
for this.
* aspeed,interrupt - Interrupt CPU on signal
* aspeed,external-signal - Generate external signal (WDT1 and WDT2 only)
* aspeed,alt-boot - Boot from alternate block on signal
Signed-off-by: Christopher Bostic
---
v2 - Add 'aspeed,' pre
Document device tree optional properties for ASPEED watchdog.
Reference properties in ASPEED watchdog driver and configure accordingly.
Christopher Bostic (2):
drivers/watchdog: Add optional ASPEED device tree properties
drivers/watchdog: ASPEED reference dev tree properties for config
On 6/26/17 9:59 PM, Joel Stanley wrote:
On Wed, Jun 14, 2017 at 6:08 AM, Christopher Bostic
wrote:
Describe new optional property 'external-signal'. When present in the
system device tree an exernal signal is generated on watchdog timeout.
Describe new optional property '
On 6/24/17 5:17 PM, Guenter Roeck wrote:
On Tue, Jun 13, 2017 at 03:38:18PM -0500, Christopher Bostic wrote:
Reference the system device tree when configuring the watchdog.
Configure for external signal generation if optional attribute
'external-signal' is present in device tree.
On 6/24/17 5:07 PM, Guenter Roeck wrote:
On Tue, Jun 13, 2017 at 03:38:17PM -0500, Christopher Bostic wrote:
Describe new optional property 'external-signal'. When present in the
system device tree an exernal signal is generated on watchdog timeout.
Describe new optional property
sabling system reset may be
required in situations where one of the other watchdogs in the
systems is responsible for this.
Signed-off-by: Christopher Bostic
---
drivers/watchdog/aspeed_wdt.c | 13 +++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/watchdog/as
. This mode
is used when one of the other watchdogs in system is to be responsible for
managing system reset.
Christopher Bostic (2):
drivers/watchdog: Document new aspeed optional dev tree properties.
drivers/watchdog: ASPEED reference dev tree properties for config
Documentation/devicetr
out.
System reset in this case is managed by one of the other watchogs
available.
Signed-off-by: Christopher Bostic
---
Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.
On 6/1/17 5:03 PM, Guenter Roeck wrote:
On Thu, Jun 01, 2017 at 04:35:21PM -0500, Christopher Bostic wrote:
Add files to enable/disable Aspeed watchdog:
* External signal after timeout
* Reset system after timeout
The subject line is heavily misleading.
Signed-off-by: Christopher Bostic
From: Jeremy Kerr
Add the initial fsi slave device, which is private to the core code.
This will be a child of the master, and parent to endpoint devices.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 10 ++
1 file cha
From: Jeremy Kerr
Add a little helper for crc4 calculations. This works 4-bits-at-a-time,
using a simple table approach.
We will need this in the FSI core code, as well as any master
implementations that need to calculate CRCs in software.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
From: Jeremy Kerr
When a new fsi master is added, we will need to scan its links, and
slaves attached to those links. This change introduces a little shell to
iterate the links, which we will populate with the actual slave scan in
a later change.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris
Set CFAM to appropriate ID so that the controlling master can manage
link memory ranges. Add slave engine register definitions.
Includes changes from Jeremy Kerr .
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 75
From: Jeremy Kerr
Implement fsi_slave_init: if we can read a chip ID, create fsi_slave
devices and register with the driver core.
Includes changes from Christopher Bostic .
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/Kconfig
From: Jeremy Kerr
This change introduces the fsi device API: simple read, write and peek
accessors for the devices' address spaces.
Includes contributions from Christopher Bostic
and Edward A. James .
Signed-off-by: Edward A. James
Signed-off-by: Jeremy Kerr
Signed-off-by: Christ
Enable each link and send a break command, and try to detect a slave by
reading from the SMODE register.
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 37 +++--
1 file changed, 35 insertions(+), 2 deletions(-)
diff
From: Jeremy Kerr
Now that we have fsi_slave devices, scan each for endpoints, and
register them on the fsi bus.
Includes contributions from Christopher Bostic
.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 128
Add driver_register and driver_unregister wrappers for FSI.
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 17 +
include/linux/fsi.h| 12
2 files changed, 29 insertions(+)
diff --git a/drivers/fsi/fsi-core.c b
Add fsi master gpio device tree binding documentation.
Includes changes from Jeremy Kerr .
Signed-off-by: Christopher Bostic
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Acked-by: Rob Herring
---
.../devicetree/bindings/fsi/fsi-master-gpio.txt| 24 ++
1
From: Jeremy Kerr
Allow drivers to access the slave address ranges.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Christopher Bostic
---
v8 - export symbols fsi_slave_read, fsi_slave_write,
fsi_slave_claim_range, fsi_slave_release_range
---
drivers/fsi/fsi
From: Jeremy Kerr
This change adds a 'raw' file for reads & writes, and a 'term' file for
the TERM command, and a 'break' file for issuing a BREAK.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Christopher Bostic
From: Jeremy Kerr
This change implements error handling in the FSI core, by cleaining up
and retrying failed operations, using the SISC, TERM and BREAK
facilities.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-core.c | 121
From: Jeremy Kerr
Trace low level read and write FSI bus operations.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Christopher Bostic
---
v8 - type cast to 'int' to clean up build warnings
---
drivers/fsi/fsi-core.c | 27 +++---
include/trace/ev
Add info for sysfs scan file in Documentaiton ABI/testing
Signed-off-by: Christopher Bostic
---
v7 - Rename scan file to 'rescan'
- Add 'raw' file details
- Add 'term' file details
- Add 'break' file details
- Update kernel version for each fil
Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
v7 - Move global spinlock to struct fsi_master_gpio
- Remove redundant checks for valid gpio descriptors
- Clarify 'active low' comments
- More descriptive comments for build_abs_ar_command()
- Test MTOE
From: Jeremy Kerr
For slaves that are behind a software-clocked master, we want FSI CFAMs
to run asynchronously to the FSI clock, so set up our slaves to be in
async mode.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-core.c| 22
Create a simple SCOM engine device driver that reads and writes
its control registers via an FSI bus.
Includes changes from Edward A. James .
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
Signed-off-by: Edward A. James
Signed-off-by: Jeremy Kerr
---
drivers/fsi/Kconfig
From: Jeremy Kerr
Trace low level input/output GPIO operations.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-master-gpio.c | 9 +
include/trace/events/fsi_master_gpio.h | 68 ++
2 files changed, 77 insertions
Add missing MODULE_LICENSE("GPL") to the core FSI driver.
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index b56f4ed..a485864 100644
--- a/drivers/fsi/fsi-core.c
+++ b/d
Add an engine driver to expose a "hub" FSI master - which has a set of
control registers in the engine address space, and uses a chunk of the
slave address space for actual FSI communication.
Additional changes from Jeremy Kerr .
Signed-off-by: Christopher Bostic
Signed-off-by: J
Allow a master to undo a previous scan. Should a master scan a bus
twice it will need to ensure it doesn't double register any
previously detected device.
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
v7 - Unscan when unregistering master
- Remove leading '
- Assign value of master->master.dev at probe time.
- Use get_optional interface for all optional GPIO pins.
Christopher Bostic (10):
drivers/fsi: Set up links for slave communication
drivers/fsi: Set slave SMODE to init communication
drivers/fsi: Add master unscan
drivers/fsi: Add docum
From: Jeremy Kerr
Introduce functions to perform reads/writes on the slave address space;
these simply pass the request on the slave's master with the correct
link and slave ID.
We implement these on top of similar helpers for the master.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
From: Jeremy Kerr
Add a `struct fsi_master` to represent a FSI master controller.
FSI master drivers register one of these structs to provide
device-specific of the standard operations: read/write/term/break and
link control.
Includes changes from Edward A. James & Jeremy Kerr
.
Signed-off-by
On 6/3/17 4:25 PM, Steven Rostedt wrote:
On Sat, 3 Jun 2017 19:05:10 +0900
Greg KH wrote:
On Wed, May 31, 2017 at 12:17:05PM -0500, Christopher Bostic wrote:
Hi Greg,
Are there any further changes you require for this patch set? This has been
extensively tested internally and all is
On 6/3/17 5:05 AM, Greg KH wrote:
On Wed, May 31, 2017 at 12:17:05PM -0500, Christopher Bostic wrote:
Hi Greg,
Are there any further changes you require for this patch set? This has been
extensively tested internally and all is working as expected. Would it be
possible to move forward with
Add files to enable/disable Aspeed watchdog:
* External signal after timeout
* Reset system after timeout
Signed-off-by: Christopher Bostic
---
.../ABI/testing/sysfs-platform-aspeed-wdt | 40 +++
drivers/watchdog/aspeed_wdt.c | 79 +-
2
, Christopher Bostic wrote:
Implementation of the IBM 'Flexible Support Interface' (FSI) bus device
driver. FSI is a high fan out serial bus consisting of a clock and a serial
data line capable of running at speeds up to 166 MHz.
This set provides the basic framework to add FSI extensi
From: Jeremy Kerr
Add the initial fsi slave device, which is private to the core code.
This will be a child of the master, and parent to endpoint devices.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 10 ++
1 file cha
From: Jeremy Kerr
Add a little helper for crc4 calculations. This works 4-bits-at-a-time,
using a simple table approach.
We will need this in the FSI core code, as well as any master
implementations that need to calculate CRCs in software.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
From: Jeremy Kerr
Now that we have fsi_slave devices, scan each for endpoints, and
register them on the fsi bus.
Includes contributions from Christopher Bostic
.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
v7 - Use GEN_MASK for bitmask
From: Jeremy Kerr
This change introduces the fsi device API: simple read, write and peek
accessors for the devices' address spaces.
Includes contributions from Christopher Bostic
and Edward A. James .
Signed-off-by: Edward A. James
Signed-off-by: Jeremy Kerr
Signed-off-by: Christ
Allow a master to undo a previous scan. Should a master scan a bus
twice it will need to ensure it doesn't double register any
previously detected device.
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
v7 - Unscan when unregistering master
- Remove leading '
From: Jeremy Kerr
This change adds a 'raw' file for reads & writes, and a 'term' file for
the TERM command, and a 'break' file for issuing a BREAK.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Christopher Bostic
Add driver_register and driver_unregister wrappers for FSI.
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 17 +
include/linux/fsi.h| 12
2 files changed, 29 insertions(+)
diff --git a/drivers/fsi/fsi-core.c b
From: Jeremy Kerr
Implement fsi_slave_init: if we can read a chip ID, create fsi_slave
devices and register with the driver core.
Includes changes from Christopher Bostic .
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
v7 - Change warning
Add fsi master gpio device tree binding documentation.
Includes changes from Jeremy Kerr .
Signed-off-by: Christopher Bostic
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Acked-by: Rob Herring
---
.../devicetree/bindings/fsi/fsi-master-gpio.txt| 24 ++
1
From: Jeremy Kerr
Trace low level read and write FSI bus operations.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-core.c | 27 +++---
include/trace/events/fsi.h | 127 +
2
From: Chris Bostic
Add info for sysfs scan file in Documentaiton ABI/testing
Signed-off-by: Christopher Bostic
---
v7 - Rename scan file to 'rescan'
- Add 'raw' file details
- Add 'term' file details
- Add 'break' file details
- Upd
Create a simple SCOM engine device driver that reads and writes
its control registers via an FSI bus.
Includes changes from Edward A. James .
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
Signed-off-by: Edward A. James
Signed-off-by: Jeremy Kerr
---
drivers/fsi/Kconfig
From: Jeremy Kerr
This change implements error handling in the FSI core, by cleaning up
and retrying failed operations, using the SISC, TERM and BREAK
facilities.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-core.c | 121
From: Jeremy Kerr
Trace low level input/output GPIO operations.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-master-gpio.c | 9 +
include/trace/events/fsi_master_gpio.h | 68 ++
2 files changed, 77 insertions
From: Jeremy Kerr
For slaves that are behind a software-clocked master, we want FSI CFAMs
to run asynchronously to the FSI clock, so set up our slaves to be in
async mode.
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-core.c| 22
Add an engine driver to expose a "hub" FSI master - which has a set of
control registers in the engine address space, and uses a chunk of the
slave address space for actual FSI communication.
Additional changes from Jeremy Kerr .
Signed-off-by: Christopher Bostic
Signed-off-by: J
Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
v7 - Move global spinlock to struct fsi_master_gpio
- Remove redundant checks for valid gpio descriptors
- Clarify 'active low' comments
- More descriptive comments for build_abs_ar_command()
- Test MTOE
From: Jeremy Kerr
Allow drivers to access the slave address ranges.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Christopher Bostic
---
drivers/fsi/fsi-core.c | 26 --
include/linux/fsi.h| 12
2 files changed, 32 insertions
From: Jeremy Kerr
When a new fsi master is added, we will need to scan its links, and
slaves attached to those links. This change introduces a little shell to
iterate the links, which we will populate with the actual slave scan in
a later change.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris
Enable each link and send a break command, and try to detect a slave by
reading from the SMODE register.
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 37 +++--
1 file changed, 35 insertions(+), 2 deletions(-)
diff
From: Jeremy Kerr
Introduce functions to perform reads/writes on the slave address space;
these simply pass the request on the slave's master with the correct
link and slave ID.
We implement these on top of similar helpers for the master.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Set CFAM to appropriate ID so that the controlling master can manage
link memory ranges. Add slave engine register definitions.
Includes changes from Jeremy Kerr .
Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 75
n request.
- Assign value of master->master.dev at probe time.
- Use get_optional interface for all optional GPIO pins.
Christopher Bostic (9):
drivers/fsi: Document FSI master sysfs files in ABI
drivers/fsi: Set up links for slave communication
drivers/fsi: Set slave SMODE to in
From: Jeremy Kerr
Add a `struct fsi_master` to represent a FSI master controller.
FSI master drivers register one of these structs to provide
device-specific of the standard operations: read/write/term/break and
link control.
Includes changes from Edward A. James & Jeremy Kerr
.
Signed-off-by
On 5/10/17 8:58 PM, Jeremy Kerr wrote:
Hi Chris,
I don't think we'd want this per master. The lock is for the 'top'
master issuing commands. Only the top master can initiate any
transactions on the bus to any devices connected downstream. Downstream
masters such as hub masters, etc... cann
On 5/10/17 3:13 AM, Joel Stanley wrote:
On Tue, Apr 11, 2017 at 5:16 AM, Christopher Bostic
wrote:
From: Jeremy Kerr
This change introduces the fsi device API: simple read, write and peek
accessors for the devices' address spaces.
Includes contributions from Chris Bostic
and Edw
On 5/10/17 2:31 AM, Joel Stanley wrote:
On Tue, Apr 11, 2017 at 5:16 AM, Christopher Bostic
wrote:
From: Chris Bostic
Allow a master to undo a previous scan. Should a master scan a bus
twice it will need to ensure it doesn't double register any
previously detected device.
Signed-o
On 5/10/17 2:30 AM, Joel Stanley wrote:
On Tue, Apr 11, 2017 at 5:16 AM, Christopher Bostic
wrote:
From: Jeremy Kerr
Now that we have fsi_slave devices, scan each for endpoints, and
register them on the fsi bus.
Includes contributions from Chris Bostic
Signed-off-by: Jeremy Kerr
Signed
On 5/10/17 2:30 AM, Joel Stanley wrote:
On Tue, Apr 11, 2017 at 5:17 AM, Christopher Bostic
wrote:
From: Chris Bostic
Add info for sysfs scan file in Documentaiton ABI/testing
You are missing documentation for the 'raw', 'term' and 'break' files.
Hi Joel,
On 5/10/17 2:30 AM, Joel Stanley wrote:
Hi Chris,
On Tue, Apr 11, 2017 at 5:17 AM, Christopher Bostic
wrote:
From: Chris Bostic
Implement a FSI master using GPIO. Will generate FSI protocol for
read and write commands to particular addresses. Sends master command
and waits for and
On 5/2/17 1:24 AM, Joel Stanley wrote:
On Tue, Apr 11, 2017 at 5:16 AM, Christopher Bostic
wrote:
From: Jeremy Kerr
Implement fsi_slave_init: if we can read a chip ID, create fsi_slave
devices and register with the driver core.
Includes changes from Chris Bostic .
Signed-off-by: Jeremy
From: Chris Bostic
Implement a FSI master using GPIO. Will generate FSI protocol for
read and write commands to particular addresses. Sends master command
and waits for and decodes a slave response.
Includes changes from Edward A. James and Jeremy
Kerr .
Signed-off-by: Edward A. James
Signe
From: Chris Bostic
Add an engine driver to expose a "hub" FSI master - which has a set of
control registers in the engine address space, and uses a chunk of the
slave address space for actual FSI communication.
Additional changes from Jeremy Kerr .
Signed-off-by: Chris Bostic
Signed-off-by: Je
From: Jeremy Kerr
For slaves that are behind a software-clocked master, we want FSI CFAMs
to run asynchronously to the FSI clock, so set up our slaves to be in
async mode.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-core.c| 22 +-
dri
From: Chris Bostic
Create a simple SCOM engine device driver that reads and writes
its control registers via an FSI bus.
Includes changes from Edward A. James .
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
Signed-off-by: Edward A. James
Signed-off-by: Jeremy Kerr
---
drivers/fsi
From: Chris Bostic
Add info for sysfs scan file in Documentaiton ABI/testing
Signed-off-by: Chris Bostic
---
Documentation/ABI/testing/sysfs-bus-fsi | 6 ++
1 file changed, 6 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-bus-fsi
diff --git a/Documentation/ABI/testing/s
From: Jeremy Kerr
Add trace points for key GPIO operations of the GPIO based FSI
master.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-master-gpio.c | 9 +
include/trace/events/fsi_master_gpio.h | 68 ++
2 files change
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