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When an arbitration loss happens in a multi-master bus, driver
drops the packet induce I2C subsystem to retry the transaction
by returning -EAGAIN. During this handling, tx_ack comes along
sometimes and it causes this this garbage printing
out:
aspeed-i2c-bus 1e78a400.i2c-bus: irq handled != irq. expected 0x00000009, but was 0x00000008
To fix this issue, this commit adds the tx_ack flag clearing into
the arbitration loss handling logic.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit refines clock settings with cherry picking the latest
code from Aspeed SDK v00.05.05
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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jffs2_flash_direct_writev() always invokes jffs2_sum_add_kvec(), even
if mtd_writev() fails. Usually, this results in an extra summary entry
pointing to dirty node space, which should be ignored -- it is a bit of
a waste, but harmless.
When mtd_writev() returns *retlen == 0, though, the node space is not
reserved as dirty, but re-used; the extra summary entry then points
into the space of the next node. After the erase block has been closed,
we get the following messages on remount:
jffs2: error: (79) jffs2_link_node_ref:
Adding new ref c3048d18 at (0x00ec5b88-0x00ec6bcc)
not immediately after previous (0x00ec5b88-0x00ec5b88)
...
jffs2: Checked all inodes but still 0x2088 bytes of unchecked space?
jffs2: No space for garbage collection. Aborting GC thread
The extra summary entries amount to "unchecked space", so that
jffs2_garbage_collect_pass() returns -ENOSPC. And without garbage
collection, the filesystem becomes unuseable over time as the erase
blocks fill up.
Fix this by skipping jffs2_sum_add_kvec() when the MTD write fails. We
don't need the summary entry anyway, and the behaviour matches that of
jffs2_flash_writev() in wbuf.c (with write buffering enabled).
Signed-off-by: Thomas Betker <thomas.betker@rohde-schwarz.com>
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Modifying the mailbox driver to use FIFO queue while using interrupt.
Signed-off-by: Arun P. Mohanan <arun.p.m@linux.intel.com>
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This commit includes additions/changes in driver code
to support 9 PWM outputs and 9 fan tachometer inputs for
ast2600 as per archer city usage
Signed-off-by: Ayushi Smriti <smriti.ayushi@intel.com>
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The ftgmac100_open function initializes state for the NCSI
channel. The get link settings function does not return this
data. This caused the link speed, and the duplex value to be returned
incorrectly by the PHY driver (0 Mbps, and duplex off).
Update the driver to return either the PHY settings when not using
NCSI, or the NCSI values that were assigned when the driver is opened.
Signed-off-by: Johnathan Mantey <johnathanx.mantey@intel.com>
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This commit adds quick fix for cases of run time registration
through sysfs. It should be fixed later by adding parsing code for
ipmb_id instead.
This is a temporary fix. Do not upstream it.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds spi driver quad io support for AST2600
Note:- Removed n25q00 Quad I/O support for the time being due to clock issue
with chip 'Micron 8UA15 - rw182 (128MB)' while enabling Quad I/O mode.
Signed-off-by: arun-pm <arun.p.m@linux.intel.com>
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Tested:
1. Config baud rate to 921600 in BIOS setup page
2. BMC could change env variable "hostserialcfg" to 1.
3. BMC is force to reboot and SPA baud rate is changed to 921600 successfully.
4. It is same for back to 115200.
Signed-off-by: Kuiying Wang <kuiying.wang@intel.com>
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To support continous eSPI H/W handshaking, this patch enables
ESPICLK always so that there discontinuity of eSPI handshaking while
boot BMC.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds video node.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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AST2600 makes a garbage interrupt which is decribed as 'reserved'
in datasheet so filter them out.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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NCSI device cannot be recovered when host shutdown due to overheated.
Tested:
Heat host till shutdown due to overheated and then
run the ipmi command like power status
Signed-off-by: Kuiying Wang <kuiying.wang@intel.com>
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Add the pwm_tacho driver from Aspeed to get pwm working until an
upstream PWM/Tacho driver is available. This was copied from the v5.02
BSP from Aspeed.
Signed-off-by: Vernon Mauery <vernon.mauery@intel.com>
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Since we enabled I2C busses in u-boot, we need to disable the I2C
bus and clear all garbage interrupts when kernel probes the bus.
This commit refines the initialization flow by adding a bus reset
at the beginning of probe function and by moving bus init function
after interrupt handling setup.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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Introduces new attribute to Mass Storage Gadget ConfigFS : stats.
It's read-only attribute which contains statistics of read/write operations
based on LUN transaction counters (IO number and bytes transferred).
Goal is to provide a way to observe whether simulated device is actually
used by host. Statistics on hosted file / nbd level are not always viable
due to page cache having severe impact on actual IO statistics.
This attribute should provide information about host IO on USB Gadget as
close to endpoint as possible.
Attribute is tied completely to configFS implementation and it's lifecycle
is managed by Kernel and user. Driver implements a handler which populates
output buffer on read.
Tests performed:
- mounted USB Mass Storage gadget, new attribute showed up in gadget tree
- attribute was monitored for changes during IO performed on host machine
- removed device, attribute (along with other device attributes) was gone
Signed-off-by: Adrian Ambrożewicz <adrian.ambrozewicz@intel.com>
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This commit adds two more attirbutes to reflect MFR_SPECIFIC bit in
the STATUS_WORD and 'Unit Off For Insufficient Input Voltage' bit in
the STATUS_INPUT into 'fault' and 'beep' attributes respectively.
The attributes will be enumerated as 'inX_fault' and 'inX_beep' in
a 'vin' group.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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If a peer master sends messages too quickly before it processes
previous slave DMA data handling, this indicator will be set. It's
just a indicator and driver can't recover this case so just ignore
it.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds I2C H/W timeout support.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds general call support into Aspeed I2C driver.
This is downstream only customization so it should not go into
upstream.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds DMA mode transfer support.
Only AST2500 supports DMA mode under some limitations:
I2C is sharing the DMA H/W with UHCI host controller and MCTP
controller. Since those controllers operate with DMA mode only, I2C
has to use buffer mode or byte mode instead if one of those
controllers is enabled. Also make sure that if SD/eMMC or Port80
snoop uses DMA mode instead of PIO or FIFO respectively, I2C can't
use DMA mode.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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Byte mode currently this driver uses makes lots of interrupt call
which isn't good for performance and it makes the driver very
timing sensitive. To improve performance of the driver, this commit
adds buffer mode transfer support which uses I2C SRAM buffer
instead of using a single byte buffer.
AST2400:
It has 2 KBytes (256 Bytes x 8 pages) of I2C SRAM buffer pool from
0x1e78a800 to 0x1e78afff that can be used for all busses with
buffer pool manipulation. To simplify implementation for supporting
both AST2400 and AST2500, it assigns each 128 Bytes per bus without
using buffer pool manipulation so total 1792 Bytes of I2C SRAM
buffer will be used.
AST2500:
It has 16 Bytes of individual I2C SRAM buffer per each bus and its
range is from 0x1e78a200 to 0x1e78a2df, so it doesn't have 'buffer
page selection' bit field in the Function control register, and
neither 'base address pointer' bit field in the Pool buffer control
register it has. To simplify implementation for supporting both
AST2400 and AST2500, it writes zeros on those register bit fields
but it's okay because it does nothing in AST2500.
It provides buffer based master and slave data transfer.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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JTAG class driver provide infrastructure to support hardware/software
JTAG platform drivers. It provide user layer API interface for flashing
and debugging external devices which equipped with JTAG interface
using standard transactions.
Signed-off-by: Oleksandr Shamray <oleksandrs@mellanox.com>
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Vadim Pasternak <vadimp@mellanox.com>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Steven Filary <steven.a.filary@intel.com>
Cc: Amithash Prasad <amithash@fb.com>
Cc: Patrick Williams <patrickw3@fb.com>
Cc: Rgrs <rgrs@protonmail.com>
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JTAG class driver provide infrastructure to support hardware/software
JTAG platform drivers. It provide user layer API interface for flashing
and debugging external devices which equipped with JTAG interface
using standard transactions.
Driver exposes set of IOCTL to user space for:
- XFER:
SIR (Scan Instruction Register, IEEE 1149.1 Data Register scan);
SDR (Scan Data Register, IEEE 1149.1 Instruction Register scan);
- GIOCSTATUS read the current TAPC state of the JTAG controller
- SIOCSTATE Forces the JTAG TAPC to go into a particular state.
- SIOCFREQ/GIOCFREQ for setting and reading JTAG frequency.
- IOCBITBANG for low level control of JTAG signals.
Signed-off-by: Oleksandr Shamray <oleksandrs@mellanox.com>
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: Eric Sandeen <sandeen@redhat.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Steven Filary <steven.a.filary@intel.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Vadim Pasternak <vadimp@mellanox.com>
Cc: Amithash Prasad <amithash@fb.com>
Cc: Patrick Williams <patrickw3@fb.com>
Cc: Rgrs <rgrs@protonmail.com>
v29->v30
v28->v29
Move ioctl number to userspace-api/ioctl/ioctl-number.rst
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Added document that describe the ABI for JTAG class driver
Signed-off-by: Oleksandr Shamray <oleksandrs@mellanox.com>
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Steven Filary <steven.a.filary@intel.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Vadim Pasternak <vadimp@mellanox.com>
Cc: Amithash Prasad <amithash@fb.com>
Cc: Patrick Williams <patrickw3@fb.com>
Cc: Rgrs <rgrs@protonmail.com>
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Aspeed AST2400, AST2500 and AST2600 JTAG master controller driver.
Signed-off-by: Oleksandr Shamray <oleksandrs@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Steven Filary <steven.a.filary@intel.com>
Cc: Vadim Pasternak <vadimp@mellanox.com>
Cc: Amithash Prasad <amithash@fb.com>
Cc: Patrick Williams <patrickw3@fb.com>
Cc: Rgrs <rgrs@protonmail.com>
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Driver adds support of Aspeed 2400-2600 series SOC JTAG master controller.
Driver implements the following jtag ops:
- freq_get;
- freq_set;
- status_get;
- status_set
- xfer;
- mode_set;
- bitbang;
- enable;
- disable;
It has been tested on Mellanox system with BMC equipped with
Aspeed 2520 SoC for programming CPLD devices.
It has also been tested on Intel system using Aspeed 25xx SoC
for JTAG communication.
Tested on Intel system using Aspeed 26xx SoC for JTAG communication.
Signed-off-by: Oleksandr Shamray <oleksandrs@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: Joel Stanley <joel@jms.id.au>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Steven Filary <steven.a.filary@intel.com>
Cc: Vadim Pasternak <vadimp@mellanox.com>
Cc: Amithash Prasad <amithash@fb.com>
Cc: Patrick Williams <patrickw3@fb.com>
Cc: Rgrs <rgrs@protonmail.com>
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JTAG class driver provide infrastructure to support hardware/software
JTAG platform drivers. It provide user layer API interface for flashing
and debugging external devices which equipped with JTAG interface
using standard transactions.
Driver exposes set of IOCTL to user space for:
- XFER:
SIR (Scan Instruction Register, IEEE 1149.1 Data Register scan);
SDR (Scan Data Register, IEEE 1149.1 Instruction Register scan);
- GIOCSTATUS read the current TAPC state of the JTAG controller
- SIOCSTATE Forces the JTAG TAPC to go into a particular state.
- SIOCFREQ/GIOCFREQ for setting and reading JTAG frequency.
- IOCBITBANG for low level control of JTAG signals.
Driver core provides set of internal APIs for allocation and
registration:
- jtag_register;
- jtag_unregister;
- jtag_alloc;
- jtag_free;
Platform driver on registration with jtag-core creates the next
entry in dev folder:
/dev/jtagX
Signed-off-by: Oleksandr Shamray <oleksandrs@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Boris Brezillon <bbrezillon@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Johan Hovold <johan@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: Federico Vaga <federico.vaga@cern.ch>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Christian Gromm <christian.gromm@microchip.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Yiwei Zhang <zzyiwei@google.com>
Cc: Alessandro Rubini <rubini@gnudd.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Steven Filary <steven.a.filary@intel.com>
Cc: Vadim Pasternak <vadimp@mellanox.com>
Cc: Amithash Prasad <amithash@fb.com>
Cc: Patrick Williams <patrickw3@fb.com>
Cc: Rgrs <rgrs@protonmail.com>
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Adding aspeed jtag device
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
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HID events can be sent even when the host disconnects the HID
device according to the current graphic mode. For an example, if
KVM mouse events are sent when the host is in text mode, queueing
of end point messages will be dropped with this message:
configfs-gadget gadget: usb_ep_queue error on int endpoint -108
This case is very usual case in BMC since BMC can control power
status of the host, so this commit suppress the error printing outs
with making HID gadget driver drop events quietly in the case.
This should be a downstream only customization. Do not upstream it.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds a checking code when it gets -EPROBE_DEFER while
getting a clock resource. In this case it doesn't need to print
out an error message because the probing will be re-visited.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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If LPC KCS driver is registered ahead of lpc-ctrl module, LPC KCS
block will be enabled without heart beating of LCLK until lpc-ctrl
enables the LCLK. This issue causes improper handling on host
interrupts when the host sends interrupt in that time frame. Then
kernel eventually forcibly disables the interrupt with dumping
stack and printing a 'nobody cared this irq' message out.
To prevent this issue, all LPC sub-nodes should enable LCLK
individually so this patch adds clock control logic into the LPC
KCS driver.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
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If LPC BT driver is registered ahead of lpc-ctrl module, LPC BT
block will be enabled without heart beating of LCLK until lpc-ctrl
enables the LCLK. This issue causes improper handling on host
interrupts when the host sends interrupt in that time frame. Then
kernel eventually forcibly disables the interrupt with dumping
stack and printing a 'nobody cared this irq' message out.
To prevent this issue, all LPC sub-nodes should enable LCLK
individually so this patch adds clock control logic into the LPC
BT driver.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
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BMC uses I2C bus 7 as a PMBus channel to communicate with PSUs,
also ME uses this bus as SMLink to control PSUs so this bus is
managed by multi-masters. In this use case, some arbitration errors
are expected so we need to add retry logic. And PMBus subsystem
uses I2C bus in kernel internally so retry logic should be
supported in kernel level.
To support the use case, this commit adds 'bus-timeout-ms' and
'#retries' device tree properties to set the bus specific
parameters at kernel boot time without using any additional ioctls
from user space.
This patch would not be accepted by I2C maintainer in linux
upstream because he doesn't like adding these legacy properties
into device tree, so keep it only in downstream.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds mux hold/unhold message types to support extended
mux control for IPMB and MCTP devices. A hold or an unhold message
can be added at the end of I2C message stream wrapped by
repeated-start, also can be used as a single message independantly.
This mux hold/unhold message will be delivered throughout all mux
levels in the path. Means that if it goes to multi-level mux path,
all muxes will be held/unheld by this message.
1. Hold message
struct i2c_msg msg;
uint16_t timeout = 5000; // timeout in ms. 5 secs in this example.
msg.addr = 0x0; // any value can be used. addr will be ignored in this packet.
msg.flags = I2C_M_HOLD; // set this flag to indicate it's a hold message.
msg.len = sizeof(uint16_t); // timeout value will be delivered using two bytes buffer.
msg.buf = (uint8_t *)&timeout; // set timeout value.
2. Unhold message
struct i2c_msg msg;
uint16_t timeout = 0; // set 0 for an unhold message.
msg.addr = 0x0; // any value can be used. addr will be ignored in this packet.
msg.flags = I2C_M_HOLD; // set this flag to indicate it's an unhold message.
msg.len = sizeof(uint16_t); // timeout value will be delivered using two bytes buffer.
msg.buf = (uint8_t *)&timeout; // set timeout value.
This unhold message can be delivered to a mux adapter even when
a bus is locked so that any holding state can be unheld
immediately by invoking this unhold message.
This patch would not be welcomed from upstream so it should be kept
in downstream only.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds Aspeed PWM driver which uses timer pulse output
feature in Aspeed SoCs. The timer IP is derived from Faraday
Technologies FTTMR010 IP but has some customized register
structure changes only for Aspeed SoCs.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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Implement a memory driver for BMC to access VGA share memory.
The driver is used by MDRV2. In MDRV2 BIOS will send whole
SMBIOS table to VGA memory and BMC can get the table from VGA
memory through this driver.
Signed-off-by: Cheng C Yang <cheng.c.yang@intel.com>
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This patch swaps the numbering of mac0 and mac1 to make a dedicated
nic get assigned the first ethernet device number.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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In order to support high speed baud rate(921600 bps),
the default UART clock(24MHz) needs to be switched
to 192MHz(from USB2.0 port1 PHY).
Create a new 192M Hz clock and assign it to uart,
based on uart clock source configuration in SCU4C.
bootloader(u-boot) will set SCU4C based on the environment configuration
Signed-off-by: Yong Li <yong.b.li@linux.intel.com>
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This commit enables dump debug of master and slave I2C drivers.
This is only for downstream debug purpose so it shouldn't go to
the upstream.
Usage (in case of bus 5 for an example):
echo 5 > /sys/module/i2c_aspeed/parameters/dump_debug_bus_id
echo 1 > /sys/module/i2c_aspeed/parameters/dump_debug
echo 5 > /sys/module/i2c_slave_mqueue/parameters/dump_debug_bus_id
echo 1 > /sys/module/i2c_slave_mqueue/parameters/dump_debug
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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Update AST2500 JTAG driver. Remove Legacy driver but keep headers.
Signed-off-by: Corona, Ernesto <ernesto.corona@intel.com>
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Add lpc sio device driver for AST2500/2400
Signed-off-by: Yong Li <yong.b.li@intel.com>
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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This commit adds back the lpc mbox driver which was removed from
the openbmc linux dev-5.2 tree.
This driver should be rewritten later.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
Signed-off-by: Arun P. Mohanan <arun.p.m@linux.intel.com>
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Some protocols over I2C are designed for bi-directional transferring
messages by using I2C Master Write protocol. Like the MCTP (Management
Component Transport Protocol) and IPMB (Intelligent Platform Management
Bus), they both require that the userspace can receive messages from
I2C dirvers under slave mode.
This new slave mqueue backend is used to receive and queue messages, it
will exposes these messages to userspace by sysfs bin file.
Signed-off-by: Haiyue Wang <haiyue.wang@linux.intel.com>
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Signed-off-by: Vernon Mauery <vernon.mauery@intel.com>
Signed-off-by: Vikram Bodireddy <vikram.bodireddy@intel.com>
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Signed-off-by: Juston Li <juston.li@intel.com>
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Change it from max to 58%
Signed-off-by: James Feist <james.feist@linux.intel.com>
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The pass-through input GPIOs cannot be monitored because when
requested, pass-through is disabled which causes a change on the
pass-through output.
The SIO GPIOs cannot be monitored because when requested, the
request is rejected based on the value of the ACPI strap.
This change removes the register check condition from the pass-
through and desired SIO GPIOs so they can be requsted and
monitored from power control.
Tested:
For pass-through, I used gpioset to hold a request on the input
GPIOs and confirmed that pass-through remained enabled.
For SIO, I used gpioget to confirm that I can successfully request
and read the GPIO value.
Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
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This change adds a gpio_disable_free() implementation that checks
if the GPIO being freed is GPIOE1 (33) or GPIOE3 (35) and will
re-enable the pass-through mux.
Tested:
Requested GPIOs 33 and 35 and used devmem to check that pass-through
was disabled. Then freed them and checked that pass-through was
enabled again.
Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
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Additions to the base g6 dtsi file for Aspeed ast2600 systems.
This mostly includes entries for the drivers that are not upstream.
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
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