Groups > linux.kernel > #1619550

Re: [PATCH v5 22/23] drivers/fsi: Add hub master support

From	Christopher Bostic <cbostic@linux.vnet.ibm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v5 22/23] drivers/fsi: Add hub master support
Date	2017-04-09 23:10 +0200
Message-ID	<tusfT-8ec-9@gated-at.bofh.it> (permalink)
References	<tsIyt-4Mn-3@gated-at.bofh.it> <tsIIa-4VI-9@gated-at.bofh.it> <tsW8q-51d-23@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 4/5/17 11:36 AM, Randy Dunlap wrote:
> On 04/04/17 19:06, Christopher Bostic wrote:
>> From: Chris Bostic <cbostic@linux.vnet.ibm.com>
>>
>> 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 <jk@ozlabs.org>.
>>
>> Signed-off-by: Chris Bostic <cbostic@linux.vnet.ibm.com>
>> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
>> Signed-off-by: Joel Stanley <joel@jms.id.au>
>> ---
>>   drivers/fsi/Kconfig          |   9 ++
>>   drivers/fsi/Makefile         |   1 +
>>   drivers/fsi/fsi-master-hub.c | 327 +++++++++++++++++++++++++++++++++++++++++++
>>   3 files changed, 337 insertions(+)
>>   create mode 100644 drivers/fsi/fsi-master-hub.c
>>
>> diff --git a/drivers/fsi/Kconfig b/drivers/fsi/Kconfig
>> index 0fa265c..e1156b4 100644
>> --- a/drivers/fsi/Kconfig
>> +++ b/drivers/fsi/Kconfig
>> @@ -18,6 +18,15 @@ config FSI_MASTER_GPIO
>>   	---help---
>>   	This option enables a FSI master driver using GPIO lines.
>>   
>> +config FSI_MASTER_HUB
>> +	tristate "FSI hub master"
>> +	depends on FSI
> redundant again.

Will correct.

Thanks,
Chris
>
>> +	---help---
>> +	This option enables a FSI hub master driver.  Hub is a type of FSI
>> +	master that is connected to the upstream master via a slave.  Hubs
>> +	allow chaining of FSI links to an arbitrary depth.  This allows for
>> +	a high target device fanout.
>> +
>>   config FSI_SCOM
>>   	tristate "SCOM FSI client device driver"
>>   	depends on FSI
>

Thread

[PATCH v5 00/23] FSI device driver implementation Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 03/23] drivers/fsi: Add empty master scan Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 14/23] drivers/fsi: Add sysfs files for FSI master & slave accesses Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 05/23] drivers/fsi: Add slave & master read/write APIs Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 01/23] drivers/fsi: Add fsi master definition Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 08/23] drivers/fsi: Set slave SMODE to init communication Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 07/23] drivers/fsi: Implement slave initialisation Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 02/23] drivers/fsi: Add slave definition Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 13/23] drivers/fsi: Add client driver register utilities Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 16/23] drivers/fsi: Add tracepoints for low-level operations Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 17/23] drivers/fsi: Add error handling for slave communication errors Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 12/23] drivers/fsi: Add documentation for GPIO bindings Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 15/23] drivers/fsi: expose direct-access slave API Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 10/23] drivers/fsi: Add device read/write/peek API Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 04/23] drivers/fsi: Add crc4 helpers Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:10 +0200
  [PATCH v5 23/23] drivers/fsi: Use asynchronous slave mode Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:20 +0200
  [PATCH v5 19/23] drivers/fsi: Add GPIO based FSI master Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:20 +0200
    Re: [PATCH v5 19/23] drivers/fsi: Add GPIO based FSI master Randy Dunlap <rdunlap@infradead.org> - 2017-04-05 18:40 +0200
      Re: [PATCH v5 19/23] drivers/fsi: Add GPIO based FSI master Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-09 23:10 +0200
  [PATCH v5 22/23] drivers/fsi: Add hub master support Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:20 +0200
    Re: [PATCH v5 22/23] drivers/fsi: Add hub master support Randy Dunlap <rdunlap@infradead.org> - 2017-04-05 18:40 +0200
      Re: [PATCH v5 22/23] drivers/fsi: Add hub master support Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-09 23:10 +0200
  [PATCH v5 18/23] drivers/fsi: Document FSI master sysfs files in ABI Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:20 +0200
  [PATCH v5 20/23] drivers/fsi/gpio: Add tracepoints for GPIO master Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:20 +0200
  [PATCH v5 21/23] drivers/fsi: Add SCOM FSI client device driver Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:20 +0200
    Re: [PATCH v5 21/23] drivers/fsi: Add SCOM FSI client device driver Randy Dunlap <rdunlap@infradead.org> - 2017-04-05 18:40 +0200
      Re: [PATCH v5 21/23] drivers/fsi: Add SCOM FSI client device driver Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-09 23:10 +0200
  [PATCH v5 11/23] drivers/fsi: Add master unscan Christopher Bostic <cbostic@linux.vnet.ibm.com> - 2017-04-05 04:20 +0200

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