kernel/git/stable/linux.git/drivers/spi/Makefile, branch linux-2.6.22.y

MPC52xx PSC SPI master driver

2007-05-11T15:29:35+00:00

SPI master driver for MPC52xx using its Programmable Serial Controller. Signed-off-by: David Brownell Signed-off-by: Dragos Carp Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

au1550 SPI controller driver

2007-05-08T18:15:16+00:00

Here is a driver for the Alchemy au1550 PSC (Programmable Serial Controller) in SPI master mode. It supports dma transfers using the Alchemy descriptor based dma controller for 4-8 bits per word SPI transfers. For 9-24 bits per word transfers, pio irq based mode is used to avoid setup of dma channels from scratch on each number of bits per word change. Tested with au1550; this may also work on other MIPS Alchemy cpus, like au1200/au1210/au1250. Used extensively with SD card connected via SPI; this handles 8.1MHz SPI clock transfers using dma without any problem (the highest SPI clock freq possible with au1550 running on 324MHz). The driver supports sharing of SPI bus by multiple devices. All features of Alchemy SPI mode are supported (all SPI modes, msb/lsb first, bits per word in 4-24 range). As the SPI clock of the controller depends on main input clock that shall be configured externally, platform data structure for au1550 SPI controller driver contains mainclk_hz attribute to define the input clock rate. From this value, dividers of the controller for SPI clock are set up for required frequency. Signed-off-by: Jan Nikitenko Whitespace and section fixups. Remove partial workaround for platform setup bug in dma_mask setup; it couldn't work with multiple controllers. Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

/dev/spidevB.C interface

2007-05-08T18:15:15+00:00

Add a filesystem API for stack. The initial version of this interface is purely synchronous. dbrownell@users.sourceforge.net: Cleaned up, bugfixed; much simplified; added preliminary documentation. Works with mdev given CONFIG_SYSFS_DEPRECATED; and presumably udev. Updated SPI_IOC_MESSAGE ioctl to full spi_message semantics, supporting groups of one or more transfers (each of which may be full duplex if desired). This is marked as EXPERIMENTAL with an explicit disclaimer that the API (notably the ioctls) is subject to change. Signed-off-by: Andrea Paterniani Signed-off-by: David Brownell Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Blackfin: blackfin on-chip SPI controller driver

2007-05-07T19:12:58+00:00

This patch implements the driver necessary use the Analog Devices Blackfin processor's SPI Port. Signed-off-by: Bryan Wu Cc: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] SPI: atmel_spi driver

2007-02-14T16:09:53+00:00

Driver for the Atmel on-chip SPI master controller. Tested primarily on AVR32/AT32AP7000/ATSTK1000 using mtd_dataflash and the jffs2 filesystem. Should also work fine on various AT91 ARM-based chips like AT91SAM926x and AT91RM9200. Hardware documentation can be found in the AT32AP7000 data sheet, or its AT91 siblings, which can be downloaded from http://www.atmel.com/dyn/products/datasheets.asp?family_id=682 Signed-off-by: Haavard Skinnemoen Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] SPI eeprom driver

2007-02-12T17:48:31+00:00

This is adds a simple SPI EEPROM driver, providing access to the EEPROM through sysfs much like the I2C "eeprom" driver ... except this driver supports write access, and multiple EEPROM sizes. From: "Tuppa, Walter" Since I have EEPROMs on SPI with different address sizing, I made some changes to your at25.c to support them. Works perfectly. (Also includes a small bugfix for the "what size address" test.) Signed-off-by: David Brownell Signed-off-by: Walter Tuppa Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] SPI: Freescale iMX SPI controller driver (BIS+)

2007-02-12T17:48:30+00:00

Add the SPI controller driver for Freescale i.MX(S/L/1). Main features summary: > Per chip setup via board specific code and/or protocol driver. > Per transfer setup. > PIO transfers. > DMA transfers. > Managing of NULL tx / rx buffer for rd only / wr only transfers. This patch replace patch-2.6.20-rc4-spi_imx with the following changes: > Few cosmetic changes. > Function map_dma_buffers now return 0 for success and -1 for failure. > Solved a bug inside spi_imx_probe function (wrong error path). > Solved a bug inside setup function (bad undo setup for max_speed_hz). > For read-only transfers, always write zero bytes. This is almost the same as the 'BIS' version sent by Andrea, except for updating the 'DUMMY' byte so that read-only transfers shift out zeroes. That part of the API changed recently, since some half duplex peripheral chips require that semantic. Signed-off-by: Andrea Paterniani Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] SPI controller driver for OMAP Microwire

2007-02-12T17:48:30+00:00

This adds a SPI driver for the Microwire controller on OMAP1 chips. This driver has been used in the Linux-OMAP tree for some time now, including with some of those displays using standardized 9-bit commands followed by data with 8-bit words. Microwire only supports half duplex transfers, but that's all that most SPI protocols need. When full duplex, or higher speeds, are needed there are several other controllers that can be used on OMAP. [akpm@osdl.org: cleanups] Signed-off-by: David Brownell Signed-off-by: Imre Deak Signed-off-by: Juha Yrjola Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] S3C24XX: hardware SPI driver

2006-05-21T19:59:19+00:00

Hardware based SPI driver for Samsung S3C24XX SoC systems Signed-off-by: Ben Dooks Cc: David Brownell Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] S3C24XX: GPIO based SPI driver

2006-05-21T19:59:19+00:00

SPI driver for SPI by GPIO on the Samsung S3C24XX series of SoC processors. Signed-off-by: Ben Dooks Cc: Greg KH Cc: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds