kernel/linux.git/drivers/fsi, branch v4.14.85

drivers/fsi/scom: Remove reset before every putscom

2017-08-28T15:15:16+00:00

Reset causes problems for operations requiring multiple scoms (e.g. i2c over scom). Instead, reset scom engine during probe. Signed-off-by: Edward A. James Signed-off-by: Greg Kroah-Hartman

drivers/fsi: add const to bin_attribute structures

2017-08-28T15:15:16+00:00

Declare bin_attribute structures as const as they are only passed as an argument to the function device_create_bin_file. This argument is of type const, so declare the structure as const. Signed-off-by: Bhumika Goyal Signed-off-by: Greg Kroah-Hartman

drivers/fsi: fix fsi_slave_mode prototype

2017-07-17T14:13:54+00:00

gcc warns about the return type of this function: drivers/fsi/fsi-core.c:535:8: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] This removes the 'const' attribute, as suggested by the warning. Fixes: 2b37c3e285f9 ("drivers/fsi: Set slave SMODE to init communication") Signed-off-by: Arnd Bergmann Acked-by: Geert Uytterhoeven Acked-by: Jeremy Kerr Signed-off-by: Greg Kroah-Hartman

fsi: core: register with postcore_initcall

2017-07-17T14:13:54+00:00

When testing an i2c driver that is a fsi bus driver, I saw the following oops: kernel BUG at drivers/base/driver.c:153! Internal error: Oops - BUG: 0 [#1] ARM [<8027cb1c>] (driver_register) from [<80344e88>] (fsi_driver_register+0x2c/0x38) [<80344e88>] (fsi_driver_register) from [<805f5ebc>] (fsi_i2c_driver_init+0x1c/0x24) [<805f5ebc>] (fsi_i2c_driver_init) from [<805d1f14>] (do_one_initcall+0xb4/0x170) [<805d1f14>] (do_one_initcall) from [<805d20f0>] (kernel_init_freeable+0x120/0x1dc) [<805d20f0>] (kernel_init_freeable) from [<8043f4a8>] (kernel_init+0x18/0x104) [<8043f4a8>] (kernel_init) from [<8000a5e8>] (ret_from_fork+0x14/0x2c) This is because the fsi bus had not been registered. This fix registers the bus with postcore_initcall instead, to ensure it is registered earlier on. When the fsi core is used as a module this should not be a problem as the fsi driver will depend on the fsi bus type symbol, and will therefore load the core before the driver. Fixes: 0508ad1fff11 ("drivers/fsi: Add empty fsi bus definitions") Signed-off-by: Joel Stanley Acked-by: Jeremy Kerr Signed-off-by: Greg Kroah-Hartman

drivers/fsi: Add module license to core driver

2017-06-09T09:52:09+00:00

Add missing MODULE_LICENSE("GPL") to the core FSI driver. Signed-off-by: Christopher Bostic Signed-off-by: Greg Kroah-Hartman

drivers/fsi: Use asynchronous slave mode

2017-06-09T09:52:09+00:00

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 Signed-off-by: Greg Kroah-Hartman

drivers/fsi: Add hub master support

2017-06-09T09:52:09+00:00

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: Jeremy Kerr Signed-off-by: Joel Stanley Signed-off-by: Greg Kroah-Hartman

drivers/fsi: Add SCOM FSI client device driver

2017-06-09T09:52:09+00:00

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 Signed-off-by: Greg Kroah-Hartman

drivers/fsi/gpio: Add tracepoints for GPIO master

2017-06-09T09:52:09+00:00

Trace low level input/output GPIO operations. Signed-off-by: Jeremy Kerr Signed-off-by: Christopher Bostic Signed-off-by: Greg Kroah-Hartman

drivers/fsi: Add GPIO based FSI master

2017-06-09T09:52:09+00:00

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 Signed-off-by: Jeremy Kerr Signed-off-by: Christopher Bostic Signed-off-by: Joel Stanley Signed-off-by: Greg Kroah-Hartman