Simon Glass ed3ee5cd06 fdt: Add basic support for decoding GPIO definitions ... This adds some support into fdtdec for reading GPIO definitions from the fdt. We permit up to FDT_GPIO_MAX GPIOs in the system. Each GPIO is of the form: gpio-function-name = <phandle gpio_num flags>; where: phandle is a pointer to the GPIO node gpio_num is the number of the GPIO (0 to 223) flags is a flag, as follows: bit meaning 0 0=polarity normal, 1=active low (inverted) An example is: enable-propounder-gpios = <&gpio 43 0>; which means that GPIO 43 is used to enable the propounder (setting the GPIO high), or that you can detect that the propounder is enabled by checking if the GPIO is high (the fdt does not indicate input/output). Two main functions are provided: fdtdec_decode_gpio() reads a GPIO property from an fdt node and decodes it into a structure. fdtdec_setup_gpio() sets up the GPIO by calling gpio_request for you. Both functions can cope with the property being missing, which is taken to mean that that GPIO function is not available or is not needed. [For reference, from Stephen Warren <swarren@nvidia.com>. It may be that we add this extra complexity later if needed: The correct way to parse such a GPIO property in general is: * Read the first cell. * Find the node referenced by the phandle (the controller). * Ensure property gpio-controller is present in the controller node. * Read property #gpio-cells from the controller node. * Extract #gpio-cells from the original property. * Keep processing more cells from the original property; there may be multiple GPIOs listed. According to the binding documentation in the Linux kernel, Samsung Exynos4 doesn't use this format, and while all other chips do have a flags cell, about 50% of the controllers indicate the cell is unused. ] Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>		2012-03-29 08:12:47 +02:00
..
andestech	andes_pcu.h: header file of andes_pcu power control unit	2011-11-09 16:35:27 +08:00
asm-generic	gpio: Modify common gpio.h to more closely match Linux	2012-01-09 20:10:32 -06:00
bedbug	ppc: Fix DBSR_IAx defines in <bedbug/regs.h>	2011-10-09 22:20:44 +02:00
configs	i.MX28: Make use of the bounce buffer	2012-03-29 07:56:53 +02:00
cramfs	…
faraday	…
galileo	…
jffs2	…
linux	nand: reinstate lazy bad block scanning	2012-02-28 14:03:39 -06:00
lzma	…
mtd	…
pcmcia	…
synopsys	dwcddr21mctl: Synopsys DWC DDR2/1 Memory Controller	2011-11-09 16:35:27 +08:00
u-boot	…
usb	usb:udc:samsung:fix Remove the req_config flag	2012-03-19 00:08:25 +01:00
.gitignore	tools: logo: split bmp arrays from bmp_logo.h	2011-11-15 23:58:26 +01:00
74xx_7xx.h	…
ACEX1K.h	…
MCD_dma.h	…
MCD_progCheck.h	…
MCD_tasksInit.h	…
SA-1100.h	…
_exports.h	…
addr_map.h	…
ahci.h	…
ali512x.h	…
altera.h	…
amba_clcd.h	…
ambapp.h	…
api_public.h	api: export LCD device to external apps	2011-11-15 23:58:27 +01:00
arm925t.h	…
armcoremodule.h	…
asm-offsets.h	…
at45.h	…
at91rm9200_i2c.h	…
at91rm9200_net.h	…
ata.h	CPCI750: Add CPCI-HD/2 support	2012-03-18 20:10:02 +01:00
atmel_lcdc.h	…
atmel_mci.h	atmel_mci.h: remove outdated register macros	2012-03-13 14:29:14 +01:00
bcd.h	…
bcm5221.h	…
bmp_layout.h	…
bootstage.h	bootstage: Implement core microsecond boot time measurement	2012-03-18 21:42:14 +01:00
bus_vcxk.h	…
bzlib.h	…
circbuf.h	…
clps7111.h	…
cmd_spl.h	Add cmd_spl command	2012-03-27 22:05:28 +02:00
command.h	Add cmd_process() to process commands in one place	2012-03-06 21:09:41 +01:00
common.h	Revert "Add board_pre_console_putc to deal with early console output"	2012-03-23 21:27:32 +01:00
commproc.h	…
compiler.h	Define uintptr_t as long int to simplify printf() format strings	2011-11-22 08:39:24 +01:00
config_cmd_all.h	…
config_cmd_default.h	…
config_cmd_defaults.h	…
config_defaults.h	…
config_phylib_all_drivers.h	phylib: Enable AR8021 phy support	2011-11-11 07:48:59 -06:00
crc.h	…
da9030.h	…
dataflash.h	dataflash: fix parameters order in write_dataflash()	2011-11-27 19:46:27 +01:00
ddr_spd.h	mpc8xxx: update module_type values from JEDEC DDR3 SPD Specification	2011-11-29 08:48:06 -06:00
div64.h	…
dm9000.h	…
dm9161.h	…
dp83848.h	…
ds1722.h	…
ds4510.h	…
dtt.h	hwmon: Provide dtt_init()	2011-10-22 01:22:21 +02:00
e500.h	…
elf.h	…
environment.h	env: remove value from boolean defines	2012-01-05 16:35:54 +01:00
errno.h	…
exports.h	Standalone Apps: Standalone apps should need only exports.h.	2011-12-06 20:52:35 +01:00
ext2fs.h	…
fat.h	FAT: Add FAT write feature	2011-10-26 21:40:44 +02:00
fdc.h	…
fdt.h	…
fdt_support.h	powerpc/8xxx:Add MPH controller support in USB device-tree fixup	2012-02-15 16:50:14 -06:00
fdtdec.h	fdt: Add basic support for decoding GPIO definitions	2012-03-29 08:12:47 +02:00
fis.h	…
flash.h	…
fm_eth.h	fm-eth: Add ability for board code to disable a port	2011-10-03 08:52:15 -05:00
fpga.h	…
fsl_diu_fb.h	…
fsl_esdhc.h	…
fsl_mdio.h	…
fsl_nfc.h	…
fsl_pmic.h	misc: pmic: Freescale PMIC switches to generic PMIC driver	2011-10-27 21:56:31 +02:00
gdsys_fpga.h	ppc4xx: Setup HICB on Io64	2012-01-09 09:19:47 +01:00
hush.h	common: add run_command2 for running simple or hush commands	2011-10-17 22:25:34 +02:00
hwconfig.h	…
i2c.h	fix: error ATMEL_FIO_BASE undeclared, if use I2C_Soft on AT91	2012-01-11 08:03:46 +01:00
i8042.h	…
ide.h	…
image.h	Add cmd_spl command	2012-03-27 22:05:28 +02:00
iomux.h	…
ioports.h	…
ipu_pixfmt.h	MX5: Make IPU display output and pixel format configurable	2011-10-17 22:25:32 +02:00
keyboard.h	…
kgdb.h	…
ks8721.h	…
lattice.h	Remove execute permissions from source files	2012-03-04 21:56:15 +01:00
lcd.h	PXA: Rename CONFIG_PXA2[57]X to CONFIG_CPU_PXA2[57]X	2011-12-06 23:59:32 +01:00
lcdvideo.h	…
led-display.h	…
lh7a40x.h	…
lh7a400.h	…
lh7a404.h	…
libata.h	…
libfdt.h	…
libfdt_env.h	…
linux_logo.h	…
lmb.h	…
logbuff.h	…
lpd7a400_cpld.h	…
lxt971a.h	…
lynxkdi.h	…
malloc.h	…
max8998_pmic.h	usb:gadget:s5p Enable the USB Gadget framework at Exynos4210 (C210 Universal)	2011-12-16 21:37:17 +01:00
mb862xx.h	…
mc9sdz60.h	…
mc13783.h	mc13783.h: create and add regulator mode 0 and 1	2012-02-12 10:11:27 +01:00
mc13892.h	MC13892: Add REGMODE0 bits definitions	2011-12-06 23:59:39 +01:00
menu.h	common, menu: show menu on startup if CONFIG_MENU_SHOW is defined	2012-02-12 10:11:24 +01:00
mg_disk.h	…
micrel.h	net: phy: add support for Micrel's KSZ9021	2012-02-27 21:19:25 +01:00
mii_phy.h	…
miiphy.h	net/miiphy/serial: drop duplicate "NAMESIZE" define	2012-03-18 20:11:22 +01:00
mk48t59.h	…
mmc.h	ATMEL: use generic mmc framework	2012-03-13 12:06:41 +01:00
mpc5xx.h	…
mpc5xxx.h	…
mpc5xxx_sdma.h	…
mpc8xx.h	…
mpc8xx_irq.h	…
mpc83xx.h	mpc83xx: Cleanup usage of DDR constants	2011-11-03 18:27:55 -05:00
mpc85xx.h	…
mpc86xx.h	powerpc/mpc86xx: Disable translation for BAT setup	2011-10-09 17:57:54 -05:00
mpc106.h	…
mpc824x.h	…
mpc8220.h	…
mpc8260.h	…
mpc8260_irq.h	…
mtd_node.h	…
mvmfp.h	…
nand.h	nand/fsl_elbc: Convert to self-init	2012-01-26 16:09:06 -06:00
net.h	net: force PKTALIGN to ARCH_DMA_MINALIGN	2012-03-29 07:57:10 +02:00
netdev.h	net: add Calxeda xgmac driver	2012-01-05 20:10:38 +01:00
nios2-epcs.h	…
nios2-io.h	…
nios2-yanu.h	…
nios2.h	…
nomadik.h	…
ns9750_bbus.h	…
ns9750_mem.h	…
ns9750_ser.h	…
ns9750_sys.h	…
ns16550.h	NS16550: trivial code clean for checkpatch	2011-10-23 20:19:53 +02:00
ns87308.h	…
onenand_uboot.h	OneNAND: Add simple OneNAND SPL	2011-11-15 22:24:50 +01:00
os.h	sandbox: mark os_exit as noreturn	2012-03-12 11:06:48 -04:00
part.h	…
pc_keyb.h	…
pca953x.h	…
pca9564.h	…
pca9698.h	gpio: Adapt PCA9698 to standard GPIO API	2011-11-18 14:04:25 +01:00
pci.h	pci: move pciauto_config_init() to pci.h	2012-03-04 21:13:33 +01:00
pci_ids.h	Update pci_ids.h from current Linux sources	2011-12-09 17:28:29 +01:00
pcmcia.h	PXA: Remove PXA PCMCIA support	2012-03-26 23:09:23 +02:00
phy.h	net: phy: add support for Micrel's KSZ9021	2012-02-27 21:19:25 +01:00
pmic.h	misc:pmic:core New generic PMIC driver	2011-10-27 21:56:31 +02:00
post.h	POST: add new memory regions test	2011-10-05 22:03:11 +02:00
ppc_asm.tmpl	…
ppc_defs.h	…
ps2mult.h	…
pwm.h	…
radeon.h	…
reiserfs.h	…
rtc.h	…
s6e63d6.h	…
s_record.h	…
sata.h	…
scsi.h	…
sdhci.h	mmc: mv_sdhci: Fix host version read for Armada100	2011-11-25 17:43:05 -06:00
search.h	env: allow to export only selected variables	2011-11-08 13:20:42 +01:00
sed156x.h	…
sed13806.h	…
serial.h	net/miiphy/serial: drop duplicate "NAMESIZE" define	2012-03-18 20:11:22 +01:00
sha1.h	…
sha256.h	…
sja1000.h	…
sm501.h	…
smiLynxEM.h	…
spartan2.h	…
spartan3.h	fpga: add definition for Xilinx Spartan-6 XC6SLX4	2012-01-05 16:18:30 +01:00
spd.h	…
spd_sdram.h	…
spi.h	…
spi_flash.h	sf: Add spi_boot() to allow booting from SPI flash in an SPL	2011-12-24 10:23:30 +01:00
status_led.h	sbc82xx: delete support for obsolete SBC8240/SBC8260	2011-10-01 21:57:13 +02:00
stdio_dev.h	…
stratixII.h	…
sym53c8xx.h	…
systemace.h	…
timestamp.h	Move timestamp and version files into 'generated' subdir	2011-10-17 23:57:00 +02:00
tpm.h	Introduce generic TPM support in u-boot	2011-12-07 08:45:51 +01:00
tsec.h	…
tsi108.h	…
tsi148.h	…
twl4030.h	omap: TWL4030 Bump VMMC1 interface voltage from 3V to 3.15V	2011-12-09 17:28:28 +01:00
twl6030.h	…
tws.h	…
ubi_uboot.h	…
universe.h	…
usb.h	usb: replace wait_ms() with mdelay()	2012-03-19 00:08:16 +01:00
usb_cdc_acm.h	…
usb_defs.h	…
usb_ether.h	…
usbdescriptors.h	USB: Use (get|put)_unaligned for accessing wMaxPacketSize	2011-12-16 21:37:17 +01:00
usbdevice.h	…
version.h	Move timestamp and version files into 'generated' subdir	2011-10-17 23:57:00 +02:00
video.h	…
video_ad7176.h	…
video_ad7177.h	…
video_ad7179.h	…
video_easylogo.h	…
video_fb.h	…
video_font.h	font: split font data from video_font.h	2011-11-15 23:58:26 +01:00
video_font_data.h	font: split font data from video_font.h	2011-11-15 23:58:26 +01:00
video_logo.h	…
virtex2.h	…
vsc7385.h	…
vsprintf.h	vsprintf: Move function documentation into header file	2011-12-17 23:34:01 +01:00
vxworks.h	…
w83c553f.h	…
watchdog.h	…
xilinx.h	…
xyzModem.h	…