linux.git/Documentation/spi, branch v5.16

spi: Remove unused function spi_busnum_to_master()

2021-10-07T14:45:57+00:00

The last user is gone since commit

	2962db71c703 ("staging/fbtft: Remove fbtft_device")

in 2019.

Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20211007121415.2401638-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown

spi: pxa2xx: Update documentation to point out that it's outdated

2021-05-18T13:05:36+00:00

Update documentation by pointing out that it's applicable mostly
for a legacy platform. While at it, add couple of points with regard
to ACPI, Device Tree, and automatic DMA enablement.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20210517140351.901-9-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown

Merge tag 'spi-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

2021-04-26T23:32:11+00:00

Pull spi updates from Mark Brown:
 "The only core work for SPI this time around is the completion of the
  conversion to the new style method for specifying transfer delays,
  meaning we can cope with what most controllers support more directly
  using conversions in the core rather than open coding in drivers.

  Otherwise it's a good stack of cleanups and fixes plus a few new
  drivers.

  Summary:

   - Completion of the conversion to new style transfer delay
     configuration

   - Introduction and use of module_parport_driver() helper, merged here
     as there's no parport tree

   - Support for Altera SoCs on DFL buses, NXP i.MX8DL, HiSilicon
     Kunpeng, MediaTek MT8195"

* tag 'spi-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (113 commits)
  spi: Rename enable1 to activate in spi_set_cs()
  spi: Convert Freescale QSPI binding to json schema
  spi: stm32-qspi: fix debug format string
  spi: tools: make a symbolic link to the header file spi.h
  spi: fsi: add a missing of_node_put
  spi: Make error handling of gpiod_count() call cleaner
  spidev: Add Micron SPI NOR Authenta device compatible
  spi: brcm,spi-bcm-qspi: convert to the json-schema
  spi: altera: Add DFL bus driver for Altera API Controller
  spi: altera: separate core code from platform code
  spi: stm32-qspi: Fix compilation warning in ARM64
  spi: Handle SPI device setup callback failure.
  spi: sync up initial chipselect state
  spi: stm32-qspi: Add dirmap support
  spi: stm32-qspi: Trigger DMA only if more than 4 bytes to transfer
  spi: stm32-qspi: fix pm_runtime usage_count counter
  spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails
  spi: spi-zynqmp-gqspi: fix use-after-free in zynqmp_qspi_exec_op
  spi: spi-zynqmp-gqspi: Resolved slab-out-of-bounds bug
  spi: spi-zynqmp-gqspi: fix hang issue when suspend/resume
  ...

docs: Minor spelling fix in spi documentation

2021-04-08T17:36:25+00:00

Signed-off-by: Stéphane Blondon 
Link: https://lore.kernel.org/r/CAOy+up7EdTf4ouh5onVy_ZzXFWGBEP+P6CPqY-=E+1UFwCeq8w@mail.gmail.com
Signed-off-by: Jonathan Corbet

spi: docs: update info about 'delay_usecs'

2021-03-12T14:30:51+00:00

The 'delay_usecs' field is no longer present on the spi_transfer struct.
This change updates the doc to mention the usage of the (relatively) new
'delay' field.

Signed-off-by: Alexandru Ardelean 
Link: https://lore.kernel.org/r/20210308145502.1075689-11-aardelean@deviqon.com
Signed-off-by: Mark Brown

SPI SUBSYSTEM: Replace HTTP links with HTTPS ones

2020-07-09T21:41:11+00:00

Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov 
Link: https://lore.kernel.org/r/20200708194400.22213-1-grandmaster@al2klimov.de
Signed-off-by: Mark Brown

spi: docs: convert to ReST and add it to the kABI bookset

2019-07-31T20:13:13+00:00

While there's one file there with briefily describes the uAPI,
the documentation was written just like most subsystems: focused
on kernel developers. So, add it together with driver-api books.

Signed-off-by: Mauro Carvalho Chehab 
Acked-by: Jonathan Cameron  # for iio
Signed-off-by: Jonathan Corbet

docs: i2c: convert to ReST and add to driver-api bookset

2019-07-31T19:25:27+00:00

Convert each file at I2C subsystem, renaming them to .rst and
adding to the driver-api book.

Signed-off-by: Mauro Carvalho Chehab 
Acked-by: Wolfram Sang 
Acked-by: Alexandre Belloni 
Acked-by: Jonathan Cameron 
Signed-off-by: Jonathan Corbet

spi-summary: document set_cs_timing

2019-04-08T07:13:43+00:00

This patch documents set_cs_timing SPI master method.

Signed-off-by: Sowjanya Komatineni 
Signed-off-by: Mark Brown

pxa2xx: replace spi_master with spi_controller

2019-01-23T10:59:56+00:00

It's also a slave controller driver now, calling it "master" is slightly
misleading.

Signed-off-by: Lubomir Rintel 
Acked-by: Robert Jarzmik 
Signed-off-by: Mark Brown