Commit graph

289 commits

Author SHA1 Message Date
Troy Kisky
cfbb88d338 mxc_i2c.c: code i2c_probe as a 0 length i2c_write
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-07-31 07:43:51 +02:00
Troy Kisky
c4330d283c mxc_i2c: call i2c_imx_stop on error in i2c_read/i2c_write
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
2012-07-31 07:43:25 +02:00
Troy Kisky
b230ddc267 mxc_i2c: create i2c_init_transfer
Initial code of i2c_read and i2c_write
is identical, move to subroutine.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-07-31 07:42:58 +02:00
Troy Kisky
ea572d853e mxc_i2c: clear i2sr before waiting for bit
Let's clear the sr register before waiting for
bit to be set, instead of clearing it after
hardware sets it. No real operational difference here,
but allows combining of i2c_imx_trx_complete and
i2c_imx_bus_busy in later patches.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
2012-07-31 07:42:20 +02:00
Troy Kisky
cea60b0c6c mxc_i2c: create tx_byte function
Use tx_byte function instead of having 3 copies
of the code.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
2012-07-31 07:41:51 +02:00
Troy Kisky
24cd738bc4 mxc_i2c: remove ifdef of CONFIG_HARD_I2C
This is always selected when CONFIG_I2C_MXC is
selected, so it adds no value.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
2012-07-31 07:41:23 +02:00
Troy Kisky
1c076dba27 mxc_i2c: fix i2c_imx_stop
Instead of clearing 2 bits, all the other
bits were set because '|=' was used instead
of '&='.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-07-31 07:40:59 +02:00
Torsten Fleischer
fa86d1c0bf mxs-i2c: Fix internal address byte order
Large EEPROMs, e.g. 24lc32, need 2 byte to address the internal memory.
These devices require that the high byte of the internal address has to be
written first.
The mxs_i2c driver currently writes the address' low byte first.

The following patch fixes the byte order of the internal address that should
be written to the I2C device.

Signed-off-by: Torsten Fleischer <to-fleischer@t-online.de>

CC: Marek Vasut <marex@denx.de>
CC: Stefano Babic <sbabic@denx.de>
CC: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-07-11 10:54:53 +02:00
Troy Kisky
9ca37d78a3 mxc_i2c: remove setting speed at each start
Other then being very weird, this code was also wrong.
For example, say I set speed to 100K. I'll read back the speed
as 85937. But the speed is really 85937.5, so we I reset
the speed to 85937, I'll get 73660.7. After a couple of transactions
my speed is now exactly 68750 so it will remain there.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-07-11 10:54:52 +02:00
Troy Kisky
de6f604de2 mxc_i2c: specify i2c base address in config file
The following platforms had their config files changed
flea3, imx31_phycore, mx35pdk, mx53ard, mx53evk, mx53smd
and mx53loco.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-07-11 10:54:29 +02:00
Stefan Roese
496ba48f5e i2c: designware_i2c.c: Add support for the "i2c probe" command
i2c_probe() is changed to reinit the i2c bus upon read failure.
This is naturally the case upon i2c bus probing.

Also, some printf messages upon read failure are removed. As they
would interfere with the "i2c probe" command.

Additionally, i2c_set_bus_speed() now returns 0, so that the
"i2c speed" command can be used.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Amit Virdi <amit.virdi@st.com>
Cc: Vipin Kumar <vipin.kumar@st.com>
2012-07-07 14:07:43 +02:00
Tom Rini
402d17fc4c omap24xx_i2c: Add AM33XX support
The same places that check for CONFIG_OMAP44XX need to check for
CONFIG_AM33XX as we share the same i2c block.

Cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@ti.com>
Acked-by: Heiko Schocher <hs@denx.de>
2012-07-07 14:07:23 +02:00
Tom Rini
168a5acb81 Revert "I2C: OMAP: detect more devices when probing an i2c bus"
This reverts commit 0e57968a21.

The short version of the original commit is that some i2c devices cannot
be probed via read as they NAK the first cycle, so try and probe via a
write that we abort before it writes to the device.  This however is not
allowed by the TRM for any of these parts.  The section on I2C_CON
(table 17-35 I2C_CON for am/dm37x for example) says you must not change
the register while STT has been set.  On these parts, the unpredictable
behavior that the chip exhibits is not problematic.  On OMAP4 however it
results in the chip being in a bad state:
Panda # i2c probe
Valid chip addresses: 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12
13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A
2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42
43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A
5B 5C 5D 5E 5F 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72
73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F
Panda # i2c md 50 0
timed out in wait_for_pin: I2C_STAT=0
I2C read: I/O error
Error reading the chip.

We must revert the original behavior to bring probe back into line with
the TRM.

Cc: Nick Thompson <nick.thompson@ge.com>
Cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@ti.com>
Acked-by: Heiko Schocher <hs@denx.de>
2012-07-07 14:07:22 +02:00
Simon Glass
e31c1e50ac tegra: i2c: Add function to find DVC bus
Add tegra_i2c_get_dvc_bus_num() to obtain the I2C bus number of DVC bus.
This allows us to talk to the PMU.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-05-15 08:31:39 +02:00
Armando Visconti
5e3e8dda51 i2c:designware Turn off the ctrl when setting the speed
The designware i2c controller must be turned off before
setting the speed in IC_CON register, as stated in the
section 6.3.1 of the dw_apb_i2c_db.pdf.

Signed-off-by: Michel Sanches <michel.sanches@st.com>
Signed-off-by: Armando Visconti <armando.visconti@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
2012-04-24 09:57:00 +02:00
Vipin KUMAR
031ed2fa74 i2c: Add support for designware i2c controller
Earlier, a driver exists in the u-boot source for designware i2c interface. That
driver was specific to spear platforms. This patch implements the i2c controller
as a generic driver which can be used by multiple platforms

The driver files are now renamed to designware_i2c.c and designware_i2c.h and
these are moved into drivers/i2c folder for reusability by other
platforms

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
2012-04-24 09:56:37 +02:00
Nobuhiro Iwamatsu
2d344a2ab2 sh: i2c: Add support I2C controller of SH7734
Renesas SH7734 has two I2C interfaceis.
This supports these I2C.

V5: - include i2c.h.
    - Add check of icsr bit polling logic.
	- Implement i2c_probe.
V4: - Remove sh_i2c_dump_reg function.
    - Use puts() when there's no format.
    - Chnage check for I2C bus number.
    - Remove space before the semi-colon.
V3: - Fix error for whitespace.
V2: - Changed bit control to use the clr|set|clrsetbits_* functions.
    - Fix wrong comment style.
    - Add new line before for loop in i2c_read.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2012-04-24 09:40:04 +02:00
Yen Lin
96a78ac0c4 tegra: i2c: Add I2C driver
Add basic i2c driver for Tegra2 with 8- and 16-bit address support.
The driver requires CONFIG_OF_CONTROL to obtain its configuration
from the device tree.

(Simon Glass: sjg@chromium.org modified for upstream)

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-03-29 08:12:50 +02:00
Tom Rini
cec487a435 Revert "ARM: I2C: I2C Multi byte address support"
This reverts commits 2faa76196a as
this has introduced some large problems on all other platforms and have
more changes in them than the commit message implies.

Cc: Heiko Schocher <hs@denx.de>
Cc: Patil, Rachna <rachna@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
2012-02-21 07:28:47 +01:00
Tom Rini
c2459a405b Revert "ARM: AM33XX: Add AM33XX I2C driver support"
This reverts commit 498cbdfe62 as we need
to revert the i2c changes that add the support for the platform.

Cc: Heiko Schocher <hs@denx.de>
Cc: Patil, Rachna <rachna@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
2012-02-21 07:28:29 +01:00
Patil, Rachna
498cbdfe62 ARM: AM33XX: Add AM33XX I2C driver support
1. Compliant with Philips I2C specification version 2.1
2. Supports upto 100Kbps in standard mode

Signed-off-by: Chandan Nath <chandan.nath@ti.com>
Signed-off-by: Patil, Rachna <rachna@ti.com>
2012-01-23 11:57:31 +01:00
Patil, Rachna
2faa76196a ARM: I2C: I2C Multi byte address support
Existing OMAP I2C driver does not support address
length greater than one. Hence this patch is to
add support for 2 byte address read/write.

Signed-off-by: Philip, Avinash <avinashphilip@ti.com>
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: Patil, Rachna <rachna@ti.com>
2012-01-23 11:57:31 +01:00
Andreas Müller
0b620ec97e drivers/i2c/omap24xx_i2c.c: move all local variables to SRAM
At old overo boards TWL4030 RTC irq is connected to gpio112. Unfortunately
this pin is also used for revision detection. Therefore we need to send
shut-up to TWL4030 to avoid reading wrong revision. In SPL this must
be done before SDRAM is set up because the type of SDRAM is revision dependent.
By this patch it is ensured that all variables used by omap24xx_i2c.c are
located in SRAM.

Signed-off-by: Andreas Müller <schnitzeltony@gmx.de>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@ti.com>
2012-01-16 08:40:12 +01:00
Andreas Müller
49e9b4bd9b drivers/i2c/omap24xx_i2c.c: replace printf with one argument by puts
Signed-off-by: Andreas Müller <schnitzeltony@gmx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2012-01-16 08:40:12 +01:00
Anatolij Gustschin
bd0f5ca806 drivers/i2c/davinci_i2c.c: Fix GCC 4.6 warning
Fix:
davinci_i2c.c: In function 'flush_rx':
davinci_i2c.c:81:6: warning: variable 'dummy' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2011-11-23 21:22:39 +01:00
Nobuhiro Iwamatsu
3dab3e0e67 i2c: sh: Add support I2C for Renesas SH
This supports I2C of Renesas SH.
I tested on SH7724.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Heiko Schocher <hs@denx.de>
2011-11-23 21:22:26 +01:00
Wolfgang Denk
0c2dd9a05b Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
  arm, davinci: add DAVINCI_MMC_CLKID
  arm, davinci_emac: fix driver bug if more then 3 PHYs are detected
  arm, davinci: da850/dm365 lowlevel cleanup
  omap5: Add omap5_evm board build support.
  omap4/5: Add support for booting with CH.
  omap5: emif: Add emif/ddr configurations required for omap5 evm
  omap5: clocks: Add clocks support for omap5 platform.
  omap5: Add minimal support for omap5430.
  omap: Checkpatch fixes
  omap4: make omap4 code common for future reuse
  GCC4.6: Squash warnings in onenand_base.c
  GCC4.6: Fix common/usb.c on xscale
  OneNAND: Add simple OneNAND SPL
  PXA: vpac270: Enable the new generic MMC driver
  PXA: Cleanup serial_pxa
  PXA: Drop csb226 and innokom boards (unmaintained)
  m28evk: Fix comment about the number of RAM banks
  mx31: Fix checkpatch warnings in generic.c
  mx31: Use proper IO accessor for GPR register
  mx31: Remove duplicate definition for GPR register
  qong: Use generic function for configuring GPR register
  M28EVK: Enable USB HOST support
  iMX28: Add USB HOST driver
  iMX28: Add USB and USB PHY register definitions
  M28: Add memory detection into SPL
  iMX28: Fix ARM vector handling
  M28: Add doc/README.m28 documentation
  M28: Add MMC SPL
  iMX28: Add support for DENX M28EVK board
  iMX28: Add u-boot.sb target to Makefile
  iMX28: Add image header generator tool
  iMX28: Add driver for internal RTC
  iMX28: Add GPMI NAND driver
  iMX28: Add APBH DMA driver
  iMX28: Add SPI driver
  iMX28: Add GPIO control
  iMX28: Add I2C bus driver
  iMX28: Add PINMUX control
  FEC: Add support for iMX28 quirks
  iMX28: Add SSP MMC driver
  iMX28: Initial support for iMX28 CPU
  MX25: zmx25: GCC4.6 fix build warnings
  da850: add new config file for AM18xx
  BeagleBoard: config: Switch to ttyO2
  OMAP3: Change omap3_evm maintainer
  devkit8000: Fix NAND SPL on boards with 256MB NAND
  integrator: enable Vpp and disable flash protection
  integrator: add system controller header
  integrator: make flash writeable on boot
  integrator: use io-accessors for board init
  integrator: move text offset to config
  integrator: pass configs for core modules
  ARM: remove superfluous setting of arch_number in board specific code.
  SPL: Allow ARM926EJS to avoid compiling in the CPU support code
  integrator: do not test first part of the memory
  arm: a320: fix broken timer
  ARM: define CONFIG_MACH_TYPE for all ronetix boards
  dm646x: pass board revision info to kernel
  dm646x: add new configuration for dm6467T
  arm, davinci: Fix setting of the SDRAM configuration register
  arm, davinci: Remove the duplication of LPSC functions
  arm, davinci: Rename AM1808 lowlevel functions to DA850
  da8xxevm: fix build error
  ARM: re-add MACH_TYPE_XXXXXX for VCMA9 board and add CONFIG_MACH_TYPE
2011-11-16 20:24:41 +01:00
Marek Vasut
f4f680aa36 iMX28: Add I2C bus driver
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Acked-by: Heiko Schocher<hs@denx.de>
2011-11-11 11:36:57 +01:00
Kumar Gala
aa5512157b fsl_i2c: Fix compile warning
fsl_i2c.c: In function 'i2c_init':
fsl_i2c.c:245:7: warning: assignment discards qualifiers from pointer target type

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-11-09 06:28:20 +01:00
Wolfgang Denk
688d8f33f2 Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
  Arm: re-introduce the MACH_TYPE_XXXXXX for EB_CPUX9K2 board
  arm: jadecpu: Readd MACH_TYPE_JADECPU
  at91: defined mach-types for otc570 board in board config file
  at91: defined mach-types for meesc board in board config file
  mx31pdk: Enable D and I caches
  ehci-mxc: remove incorrect comment
  README: Fix supported i.MX SoC list for CONFIG_MXC_SPI
  mx53: Turn off child clocks before reconfigure perclk_root
  qong: enable support for compressed images
  imx: imx31_phycore.h: fix checkpatch warnings
  vision2: Remove unused get_board_rev function
  mx53smd: Remove unused get_board_rev function
  mx53ard: Remove unused get_board_rev function
  mx53evk: Remove unused get_board_rev function
  mx53evk: Add RTC support
  mx53loco: Remove unused get_board_rev function
  mx53evk: Remove unneeded '1' from mx53evk.h
  OMAP3: mvblx: Initial support for mvBlueLYNX-X
  ARM: dig297: Define MACH_TYPE_OMAP3_CPS and CONFIG_MACH_TYPE
  omap3: mem: Move comments next to definitions
  omap3: mem: Clean-up whitespaces
  omap3: mem: Define and use common macros
  Davinci: ea20: added PREBOOT to configuration
  Davinci: ea20: added I2C support
  Davinci: ea20: added video support
  VIDEO: davinci: add framebuffer to da8xx
  ARM: Davinci: added missing registers to hardware.h
  Davinci: ea20: add gpios for LCD backlight control
  Davinci: ea20: add gpio for keeping power on in board_late_init
  Davinci: ea20: Add default U-Boot environment
  Davinci: ea20: Add early init to get early output from console
  Davinci: ea20: Add NAND support
  Davinci: ea20: set GPIOs to hold MII-Phy in reset and set UART0-Switch for console
  Davinci: ea20: set console on UART0
  arm, davinci: add cam_enc_4xx support
  arm926ejs, davinci: add missing spi defines for dm365
  arm926ejs, davinci: add cpuinfo for dm365
  arm, davinci: add lowlevel function for dm365 soc
  arm, davinci: add header files for dm365
  spl, nand: add 4bit HW ecc oob first nand_read_page function
  arm, davinci: add support for new spl framework
  spl: add option for adding post memory test to the SPL framework
  net, davinci_emac: make clock divider in MDIO control register configurable
  arm, usb, davinci: make USBPHY_CTL register configurable
  usb, davinci: add enable_vbus() weak function
  omap3evm: fix errors caused by multiple definitions
  omap3evm: Add (quick) configuration for NAND only
  omap3evm: Add (quick) configuration for MMC/SD only
  omap3evm: move common config options to new file
  omap3evm: Prepare to split configuration
  omap3evm: Reorder related config options
  omap/spl: actually enable the console
  davinci_emac: compilation fix, phy is array now
  omap3evm: Set environment variable 'ethaddr'
  arm, arm926: fix missing symbols in NAND_SPL mode
  arm, davinci: Add function lpsc_syncreset()
  arm, davinci: replace CONFIG_PRELOADER with CONFIG_SPL_BUILD
  arm/km: portl2 environment address update to P1B
  arm/km: adapt bootcounter evaluation
  arm/km: enable jffs2 cmds
  arm/km: trigger reconfiguration for the Xilinx FPGA
  arm/km: add boardid and hwkey to kernel command line
  ARM: Reintroduce MACH_TYPE_KM_KIRKWOOD for keymile ARM boards
  netspace_v2: enable I2C EEPROM support
  netspace_v2: fix SDRAM configuration
  armada100: define CONFIG_SYS_CACHELINE_SIZE
  pantheon: define CONFIG_SYS_CACHELINE_SIZE
  kirkwood: define CONFIG_SYS_CACHELINE_SIZE
  kirkwood: drop empty asm-offsets.s file
  arm/km/mgcoge3un: enhance "waitforne" feature
  arm/km: add variable waitforne to mgcoge3un
  gplugD: Fix for error:MACH_TYPE_SHEEVAD undeclared
  ARM: dreamplug: fix compilation
  ARM: DockStar: fix compilation
  ARM: netspace_v2: fix warnings
  am335x: Drop board_sysinfo struct
  am335x: Temporarily add MACH_TYPE define
  misc:pmic:samsung Enable PMIC driver at C210 Universal target
  dcache:s5p CONFIG_SYS_CACHELINE_SIZE added for s5p UNIVERSAL C210 target
  dcache:s5p CONFIG_SYS_CACHELINE_SIZE added for s5p GONI target
  smdkv310: use macro for mmc data read function address
  smdkv310: use spl framework for mmc spl
  SMDKV310: use get_ram_size() to validate dram size
  SMDKV310: Initialize board id using CONFIG_MACH_TYPE
  ORIGEN : use absolute paths and fix tool naming
  ORIGEN : enable device tree support
  MX25: tx25: Fix building due to missing MACH_TYPE
  mx31: Add board support for HALE TT-01
  mx31: add ESD control registers
  mx31: define pins and init for UART2 and CSPI3
  MX35: add support for flea3 board
  MX51: vision2: add MACH_TYPE in config file
  vision2: Remove unused header file
  mx51evk: Remove unused get_board_rev function
  mx51evk: Remove unneeded '1' from mx51evk.h
  I2C: Fix mxc_i2c.c problem on imx31_phycore
  mx35pdk: Add RTC support
  mx51evk: Use GPIO API for configuring the IOMUX
  mx51evk: Add RTC support
  rtc: Make mc13783-rtc driver generic
  qong: remove unneeded IOMUX settings
  qong: Use mx31_set_gpr to setup USBH2 pins
  mx31: Introduce mx31_set_gpr function
  mx31pdk: Add MC13783 PMIC support
  qong: remove unneeded "1" from qong.h
  misc: pmic: fix regression in pmic_fsl.c (SPI)
  mx5 configs: CONFIG_PRIME should really be CONFIG_ETHPRIME
  MX35: Drop unnecessary prototypes from imx-regs.h
  I2C: added I2C-2 and I2C-3 to MX35
  MX35: factorize common assembly code
  MX35: add reset cause as provided by other i.MX
  MX35: add pins definition for UART3
  MX35: added ESDC structure to imx-regs
2011-11-08 00:38:52 +01:00
Jerry Huang
c9a8b25ef9 Powerpc/i2c: Use the same initialize codes
Make the I2C2 and I2C1 use the same initialize codes.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
2011-11-04 06:21:26 +01:00
Marek Vasut
bf0783df0d I2C: Fix mxc_i2c.c problem on imx31_phycore
The problem was caused by a global variable being used early in the boot
process.

The symptoms were on imx31_phycore board, reading the environment from I2C
EEPROM didn't work correctly and causes default environment to be loaded.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Heiko Schocher <hs@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
Tested-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Stefano Babic <sbabic@denx.de>
2011-11-03 22:56:19 +01:00
Stefano Babic
a1c662965d I2C: added I2C-2 and I2C-3 to MX35
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2011-11-03 22:56:18 +01:00
Marek Vasut
b567b8ff79 I2C: Add i2c_get/set_speed() to mxc_i2c.c
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2011-10-27 21:56:30 +02:00
Lei Wen
d308c9d35a I2C: mv_i2c: fix multi-bus init issue
When enable the multi-bus, the current_bus is not inited in the original
implementation, which make the i2c operation unpredicatable.

Signed-off-by: Lei Wen <leiwen@marvell.com>
2011-10-03 11:50:09 +02:00
Lei Wen
2be1ed349c I2C: mv_i2c: fix build issue when enable debug option
When DEBUG_I2C is open, the following build issue would shows up.

mv_i2c.c: In function 'i2c_transfer':
mv_i2c.c:257: error: 'ISR' undeclared (first use in this function)
mv_i2c.c:257: error: (Each undeclared identifier is reported only once
mv_i2c.c:257: error: for each function it appears in.)

Signed-off-by: Lei Wen <leiwen@marvell.com>
2011-10-03 11:47:07 +02:00
Graeme Russ
e3e454cd72 console: Squelch pre-console output in console functions
There are some locations in the code which anticipate printf() being called
before the console is ready by squelching printf() on gd->have_console.
Move this squelching into printf(), vprintf(), puts() and putc(). Also
make tstc() and getc() return 0 if console is not yet initialised

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Tested-by: Simon Glass <sjg@chromium.org>
2011-10-01 21:54:49 +02:00
Marek Vasut
db84140bb7 I2C: mxc_i2c rework
Rewrite the mxc_i2c driver.
 * This version is much closer to Linux implementation.
 * Fixes IPG_PERCLK being incorrectly used as clock source
 * Fixes behaviour of the driver on iMX51
 * Clean up coding style a bit ;-)

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Jason Hui <jason.hui@linaro.org>
Acked-by: Jason Liu <jason.hui@linro.org>
Acked-by: Heiko Schocher <hs@denx.de>
Tested-by: Jason Liu <jason.hui@linro.org>
2011-09-30 22:01:05 +02:00
Heiko Schocher
49d6da6032 i2c, davinci: add i2c set speed
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Paulraj Sandeep <s-paulraj@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-30 22:00:56 +02:00
Michael Jones
89677b27d3 ARMV7: OMAP: I2C driver: cosmetic: make checkpatch-compatible
Signed-off-by: Michael Jones <michael.jones@matrix-vision.de>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-12 17:40:48 +02:00
Michael Jones
0607e2b97a ARMV7: OMAP: Write more than 1 byte at a time in i2c_write
This allows the EEPROM layer to send a single i2c write command
per page, and wait CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS between
i2c write commands.

Signed-off-by: Michael Jones <michael.jones@matrix-vision.de>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-12 17:40:48 +02:00
Stefano Babic
30032710ed I2C: mxc: fix compilation for MX31
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2011-09-07 22:11:47 +02:00
Michael Jones
f9a78b8d4f cosmetic: spell fixes etc.
Signed-off-by: Michael Jones <michael.jones@matrix-vision.de>
Acked-by: Detlev Zundel <dzu@denx.de>
2011-07-28 16:32:50 +02:00
Michael Brandt
d3d6427a3f I2C: Add driver for ST-Ericsson U8500 i2c
Signed-off-by: John Rigby <john.rigby@linaro.org>
CC: Heiko Schocher <hs@denx.de>
2011-06-01 19:22:47 +02:00
Heiko Schocher
4bd5566ee8 i2c, soft_i2c: deblock bus if switching to another i2c bus
Deblock i2c bus when switching to another i2c bus, if using
i2c_set_bus_num().

Signed-off-by: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
cc: Detlev Zundel <dzu@denx.de>
cc: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
2011-04-28 10:57:08 +02:00
Albert ARIBAUD
57b4bce996 Replace obsolete e-mail address
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2011-04-27 19:38:09 +02:00
Lei Wen
adb00bb6a0 I2C: mv_i2c: add multi bus support
Add the ability to support multiple i2c bus for mv_i2c

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Lei Wen <leiwen@marvell.com>
2011-04-27 19:38:08 +02:00
Lei Wen
3df619ec2c mv_i2c: use structure to replace the direclty define
Add i2c_clk_enable in the cpu specific code, since previous platform it,
while new platform don't need. In the pantheon and armada100 platform,
this function is defined as NULL one.

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Lei Wen <leiwen@marvell.com>
2011-04-27 19:38:08 +02:00
Lei Wen
879de1275a mv_i2c: fix timeout value to be consistent with comments
The original 10000 value would be 100ms, which is not
the comments said.

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Lei Wen <leiwen@marvell.com>
2011-04-27 19:38:07 +02:00
Lei Wen
68432c2743 pxa: move i2c driver to the common place
For better sharing with other platform other than pxa's,
it is more convenient to put the driver to the common place.

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Lei Wen <leiwen@marvell.com>
2011-04-27 19:38:07 +02:00
Stefano Babic
8627111543 IMX: MX31: Cleanup include files and drop nasty #ifdef in drivers
As exception among the i.MX processors, the i.MX31 has headers
without general names (mx31-regs.h, mx31.h instead of imx-regs.h and
clock.h). This requires several nasty #ifdef in the drivers to
include the correct header. The patch cleans up the driver and
renames the header files as for the other i.MX processors.

Signed-off-by: Stefano Babic <sbabic@denx.de>
2011-04-27 19:38:05 +02:00
Nick Thompson
0e57968a21 I2C: OMAP: detect more devices when probing an i2c bus
The omap24xx driver only seems to support devices that have a single subaddress
byte. With these types of devices, the first access in a bus transaction is
usually a write (writes the subaddress) followed by either a read or write to
access the devices registers.

Many such devices will respond to a read as the first access, but there are at
least some that will NACK such a read. (e.g. ADV7180.)

The probe function attempts to detect a devices ACK to a read access only and
fails to find devices that NACK a read.

This commit modifies the probe function to start a write instead. This detects
devices that respond to reads (since they must also respond to writes) as well
as those that only respond to writes. The bus is immediately set to idle after a
(N)ACK avoiding actually writing anything to the device.

Signed-off-by: Nick Thompson <nick.thompson@ge.com>
2011-04-14 08:33:23 +02:00
Stefano Babic
81687212ee I2C: mxc_i2c: address failure with mx35 processor
There is sporadic failures when more as one I2C slave
is on the bus and the processor tries to communicate
with more as one slave.
The problem was seen on a mx35pdk (two I2C slaves,
PMIC controller and CAN/RTC chip).

The current driver uses the IIF bit in the status register
to check if the bus is busy or not. According to the manual,
this is not correct, because the IIB bit should be checked.
Not only, to check if a transfer is finished must be checked
the ICF bit, and this is not tested at all.

This patch comes from analyse with a corresponding driver
provided by Freescale as part of the LTIB tool. Comparing
the two drivers, it appears that the current u-boot driver checks
the wrong bits, and depending on race condition, the transfer
can be successful or not.

The patch gets rid also of own debug function (DPRINTF),
replaced with the general debug().

Tested on Freescale mx35pdk.

Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2011-02-02 00:54:43 +01:00
Stefano Babic
1d549ade61 I2C: mxc_i2c: get rid of __REG access
This driver accesses to processor's register
via __REG macros, that are removed (or are planned
to be removed) and replaced by C structures.
This patches replaces all occurrencies of __REG macros.

Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2011-02-02 00:54:42 +01:00
Stefano Babic
04220612f6 mxc_i2c: Add support for the i.MX35 processor
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2011-02-02 00:54:42 +01:00
Liu Hui-R64343
127cec1889 mxc_i2c: add support for MX53 processor
This patch add I2C support for Freescale MX53 processor

Signed-off-by: Jason Liu <r64343@freescale.com>
2011-02-02 00:54:42 +01:00
Ryan Mallon
f3100ff767 Fix at91 includes in soft_i2c driver
Make at91 header includes in soft_i2c depend only on CONFIG_AT91FAMILY
rather than individual SoCs.

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: Reinhard Meyer<u-boot@emk-elektronik.de>
2011-01-27 07:27:32 +01:00
John Rigby
2956532625 Move DECLARE_GLOBAL_DATA_PTR to file scope
It can be optimised out by the compiler otherwise resulting
in obscure errors like a board not booting.

This has been documented in README since 2006 when these were
first fixed up for GCC 4.x.

Signed-off-by: John Rigby <john.rigby@linaro.org>

Fix some additional places.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-By: Albert ARIBAUD <albert.aribaud@free.fr>
2010-12-21 11:33:36 +01:00
Sebastien Carlier
6d8962e814 Switch from archive libraries to partial linking
Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils.  As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".

This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.

The name of each former library archive is preserved except for
extensions which change from ".a" to ".o".  This commit updates
references accordingly where needed, in particular in some linker
scripts.

This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols.  Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.

Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-17 21:02:18 +01:00
Wolfgang Denk
17dd883c5b Merge branch 'master' of git://git.denx.de/u-boot-samsung 2010-10-29 21:47:48 +02:00
C Nauman
d9abba8254 Add generic support for samsung s3c2440
This patch adds generic support for the Samsung s3c2440 processor.

Global s3c24x0 changes to struct members converting from upper case to
lower case.

Signed-off-by: Craig Nauman <cnauman@diagraph.com>
Cc: kevin.morfitt@fearnside-systems.co.uk
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2010-10-28 15:35:56 +09:00
Steve Sakoman
4df6689495 ARMV7: OMAP: I2C driver: Fix bug found in 37XX testing
On OMAP36/37XX the standard on chip pullups are not sufficient to
ensure proper i2c operation without external pullups or switching
to high speed mode and enabling special on chip pullups.

This is an issue for Beagle xM, which does not have external pullups
on the expansion board i2c lines.

The issue manifests itself as an AL (arbitration lost) error when
probing for a non-existent device (i.e. on a Beagle xM with no expansion
boards attached).  This issue does not occur on expansion boards that
include pullups or on Overo 37XX COM's since they include pull-ups.

This patch fixes the issue by checking for the AL bit in the i2c_probe
function.

Signed-off-by: Steve Sakoman <steve.sakoman@linaro.org>
2010-10-25 07:57:20 +02:00
Steve Sakoman
fbad355562 ARMV7: OMAP: I2C driver: Restructure i2c_probe function
This patch removes the "magic number" delays and instead
monitors state changes in the status register bits.

Signed-off-by: Steve Sakoman <steve.sakoman@linaro.org>
Tested-by: Heiko Schocher <hs@denx.de>
2010-10-20 15:28:48 +02:00
Steve Sakoman
d480c46773 ARMV7: OMAP: I2C driver: Restructure i2c_write_byte function
This patch removes the "magic number" delays and instead
monitors state changes in the status register bits.

Signed-off-by: Steve Sakoman <steve.sakoman@linaro.org>
Tested-by: Heiko Schocher <hs@denx.de>
2010-10-20 15:28:41 +02:00
Steve Sakoman
da0cc665bc ARMV7: OMAP: I2C driver: Restructure i2c_read_byte function
This patch removes the "magic number" delays and instead
monitors state changes in the status register bits.

Signed-off-by: Steve Sakoman <steve.sakomanlinaro.org>
Tested-by: Heiko Schocher <hs@denx.de>
2010-10-20 15:28:37 +02:00
Steve Sakoman
73e8747fe4 ARMV7: OMAP: I2C driver: Use same timeout value as linux kernel driver
This patch matches the poll interval (1 millisecond) and timeout (1 second)
used in the linux driver. It also adds a return value of 0 in the event of
a timeout error and cleans up some formatting errors in that section of the
code.

Signed-off-by: Steve Sakoman <steve.sakoman@linaro.org>
Tested-by: Heiko Schocher <hs@denx.de>
2010-10-20 15:28:33 +02:00
Stefan Roese
b36df56115 ppc4xx: Move ppc4xx headers to powerpc include directory
This patch moves some ppc4xx related headers from the common include
directory (include/) to the powerpc specific one
(arch/powerpc/include/asm/). This way to common include directory is not
so cluttered with files.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:05 +02:00
Heiko Schocher
1724fe9adf i2c, omap24xx: set bus_initialized only after relocation.
Portions of this work were supported by funding from
the CE Linux Forum.

Signed-off-by: Heiko Schocher <hs@denx.de>
2010-09-19 19:29:52 +02:00
Wolfgang Denk
2d941de9d5 Prepare v2010.09-rc1
Coding style cleanup.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-09-10 00:16:19 +02:00
Albert Aribaud
306563a773 i2c: rewrite mvtwsi, support orion5x and kirkwood
This rewrite of the mvtwsi driver is 25% smaller and much
faster and simpler than the previous code.

Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
Acked-by: Prafulla Wadaskar<prafulla@marvell.com>
Acked-by: Heiko Schocher<hs@denx.de>
2010-08-30 14:10:35 +02:00
Albert Aribaud
01ec99d969 i2c: rename kirkwood_i2c to mvtwsi
This driver is not kirkwood-specific and can also be used
e.g. by orion5x. Rename to a SoC-neutral name.

Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
Acked-by: Prafulla Wadaskar<prafulla@marvell.com>
Acked-by: Heiko Schocher<hs@denx.de>
2010-08-30 14:10:23 +02:00
Nishanth Menon
07cf5e207e i2c: omap2+: change header guard to be generic
Make the header guard to be generic to stop conflicting with
omap2 i2c header file arch/arm/include/asm/arch-omap24xx/i2c.h

Cc: Steve Sakoman <steve@sakoman.com>
Cc: Heiko <hs@denx.de>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Wolfang Denk <wd@denx.de>

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Steve Sakoman <steve@sakoman.com>
2010-08-23 08:08:31 +02:00
Steve Sakoman
d708395d2f ARMV7: Modify i2c driver for more reliable operation on OMAP4
This patch modifies the init routine to follow the TRM
recommendations. It also modifies the i2c_read_byte function
to reflect subtle differences between the i2c controller in
OMAP3 and OMAP4.

Signed-off-by:  Steve Sakoman <steve@sakoman.com>
Acked-by: Nishanth Menon <menon.nishanth@gmail.com>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-08-05 10:11:24 -04:00
Mike Frysinger
793b5726f7 i2c: soft_i2c: add simple GPIO implementation
Since the vast majority of GPIO I2C implementations behave the same way,
support the common GPIO framework with default settings.

This adds two new defines CONFIG_SOFT_I2C_GPIO_{SCL,SDA} so that boards
which want GPIO I2C support need only define these.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Tested-by: Thomas Chou <thomas@wytron.com.tw>
2010-07-22 08:03:47 +02:00
Steve Sakoman
938717cee1 ARMV7: Restructure OMAP i2c driver to allow code sharing between OMAP3 and OMAP4
This patch modifies the omap24xx driver so that it will also work with OMAP4.

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-07-05 20:00:10 -04:00
Mike Frysinger
b5cebb4fd6 Blackfin: TWI/I2C: implement multibus support
In order to do this cleanly, the register accesses have to be converted to
a C struct (base pointer), so do that in the process.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-05 10:04:38 +02:00
Richard Retanubun
26a33504a5 fsl_i2c: Added a callpoint for i2c_board_late_init
This patch adds a callpoint in i2c_init that allows board specific
i2c board initialization (typically for i2c bus reset) that is called
after i2c_init operations, allowing the i2c_board_late_init function
to use the pre-configured i2c bus speed and slave address.
2010-04-19 07:46:35 +02:00
Peter Tyser
61f2b38a17 Replace "#include <asm-$ARCH/$FILE>" with "#include <asm/$FILE>"
The appropriate include/asm-$ARCH directory should already by symlinked
to include/asm so using the whole "asm-$ARCH" path is unnecessary.

This change should also allow us to move the include/asm-$ARCH
directories into their appropriate lib/$ARCH/ directories.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:04 +02:00
Stefan Roese
d0b0dcaa22 i2c: Move PPC4xx I2C driver into drivers/i2c directory
This patch moves the PPC4xx specific I2C device driver into the I2C
drivers directory. All 4xx config headers are updated to include this
driver.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-04-06 08:10:41 +02:00
Thomas Weber
5647f78d04 mod change 755 => 644 for multiple files
I executed 'find . -name "*.[chS]" -perm 755 -exec chmod 644 {} \;'

Signed-off-by: Thomas Weber <swirl@gmx.li>
Add some more: neither Makefile nor config.mk need execute permissions.
Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-03-21 22:22:53 +01:00
Jens Scharsig
0cf0b93161 convert common files to new SoC access
* add's a warning to all files, which need update to new SoC access
 * convert common files in cpu/../at91 and a lot of drivers to use
   c stucture SoC access

Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-12 12:31:55 -06:00
Vipin KUMAR
2403f8f417 SPEAr : i2c driver support added for SPEAr SoCs
SPEAr SoCs contain a synopsys i2c controller.
This patch adds the driver for this IP.

Signed-off-by: Vipin <vipin.kumar@st.com>
2010-01-23 08:15:49 -06:00
Prafulla Wadaskar
beca04dd24 Kirkwood: Upgated licencing for files imported from linux source to GPLv2 or later
These are few files directly imported from Linux kernel source.
Those are not modifyed at all ar per strategy.
These files contains source with GPLv2 only
whereas u-boot expects GPLv2 or latter

These files are updated for the same from prior permission from original writes

Acked-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
2010-01-23 08:15:48 -06:00
kevin.morfitt@fearnside-systems.co.uk
ac67804fbb Add a unified s3c24x0 header file
This patch adds a unified s3c24x0 cpu header file that selects the header
file for the specific s3c24x0 cpu from the SOC and CPU configs defined in
board config file. This removes the current chain of s3c24-type #ifdef's
from the s3c24x0 code.

Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2009-11-27 16:26:13 -06:00
kevin.morfitt@fearnside-systems.co.uk
492fb1fdbc Move s3c24x0 header files to asm-arm/arch-s3c24x0/
This patch moves the s3c24x0 header files from include/ to
include/asm-arm/arch-s3c24x0/.

checkpatch.pl showed 2 errors and 3 warnings. The 2 errors were both due
to a non-UTF8 character in David M?ller's name:

ERROR: Invalid UTF-8, patch and commit message should be encoded in UTF-8
#489: FILE: include/asm-arm/arch-s3c24x0/s3c2410.h:3:
+ * David M?ller ELSOFT AG Switzerland. d.mueller@elsoft.ch

As David's name correctly contains a non-UTF8 character I haven't fixed
these errors.

The 3 warnings were all because of the use of 'volatile' in s3c24x0.h:

WARNING: Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt
#673: FILE: include/asm-arm/arch-s3c24x0/s3c24x0.h:35:
+typedef volatile u8	S3C24X0_REG8;
+typedef volatile u16	S3C24X0_REG16;
+typedef volatile u32	S3C24X0_REG32;

I'll fix these errors in another patch.

Tested by running MAKEALL for ARM8 targets and ensuring there were no new
errors or warnings.

Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2009-11-27 16:26:12 -06:00
Daniel Gorsulowski
4e574c4e2d at91: Extended soft_i2c driver for AT91SAM9263 SoC
While hard_i2c support is not available
(see http://lists.denx.de/pipermail/u-boot/2009-March/049751.html),
this patch enables soft_i2c on AT91SAM9263 SoC.

Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>
2009-11-23 09:26:54 +01:00
Dirk Behme
1d2e96de56 OMAP2/3: I2C: Add support for second and third bus
Add support to use second and third I2C bus, too.

Bus 0 is still the default, but by calling i2c_set_bus_num(1/2) before doing
I2C accesses, code can switch to bus 1 and 2, too. Don't forget to switch
back afterwards, then.

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2009-11-16 07:25:15 +01:00
Valentin Yakovenkov
08ea550eef new PCA9564 i2c bridge driver
Signed-off-by: Valentin Yakovenkov <yakovenkov@niistt.ru>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-30 15:10:58 +01:00
Mike Frysinger
08a1c6258c Blackfin: TWI/I2C: implement bus speed get/set functions
While we're here, improve the speed calculation a bit to match the HRM.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-30 15:10:58 +01:00
Mike Frysinger
3814ea4f00 Blackfin: TWI/I2C: add timeout to transfer
The current transfer code relies on ctrlc() to abort transfers, but this
requires user interactivity.  Naturalize the process with a timeout.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-30 15:10:58 +01:00
kevin.morfitt@fearnside-systems.co.uk
eb0ae7f549 Clean-up of s3c24x0 drivers excluding nand driver
This patch re-formats the arm920t s3c24x0 driver files, excluding the nand
driver, in preparation for changes to add support for the Embest SBC2440-II Board.

The changes are as follows:
- re-indent the code using Lindent
- make sure register layouts are defined using a C struct
- replace the upper-case typedef'ed C struct names with lower case
  non-typedef'ed ones
- make sure registers are accessed using the proper accessor functions
- run checkpatch.pl and fix any error reports

It assumes the following patch has been applied first:
- [U-Boot][PATCH-ARM] CONFIG_SYS_HZ fix for ARM902T S3C24X0 Boards, 05/09/2009
- patches 1/4 and 2/4 of this series

Tested on an Embest SBC2440-II Board with local u-boot patches as I don't have
any s3c2400 or s3c2410 boards but need this patch applying before I can submit
patches for the SBC2440-II Board. Also, temporarily modified sbc2410x, smdk2400,
smdk2410 and trab configs to use the mtd nand driver (which isn't used by any
board at the moment), ran MAKEALL for all ARM9 targets and no new warnings or
errors were found.

Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2009-10-13 21:13:56 -05:00
Joakim Tjernlund
d1c9e5b379 fsl_i2c: Do not generate STOP after read.
__i2c_read always ends with a STOP condition thereby releasing
the bus. It is cleaner to do the STOP magic in i2c_read(), like
i2c_write() does. This may also help future multimaster systems which
wants to hold on to the bus until all transactions are finished.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2009-09-28 07:35:56 +02:00
Joakim Tjernlund
9940420212 fsl_i2c: Impl. AN2919, rev 5 to calculate FDR/DFSR
The latest AN2919 has changed the way FDR/DFSR should be calculated.
Update the driver according to spec. However, Condition 2
is not accounted for as it is not clear how to do so.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
2009-09-28 07:35:54 +02:00
Joakim Tjernlund
d01ee4db93 fsl_i2c: Add CONFIG_FSL_I2C_CUSTOM_{DFSR/FDR}
Some boards need a higher DFSR value than the spec currently
recommends so give these boards the means to define there own.

For completeness, add CONFIG_FSL_I2C_CUSTOM_FDR too.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2009-09-28 07:35:53 +02:00
Joakim Tjernlund
21f4cbb772 fsl_i2c: Wait for STOP condition to propagate
After issuing a STOP one must wait until the STOP has completed
on the bus before doing something new to the controller.

Also add an extra read of SR as the manual mentions doing that
is a good idea.

Remove surplus write of CR just before a write, isn't required and
could potentially disturb the I2C bus.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2009-09-28 07:35:52 +02:00
Timur Tabi
92477a631b fsl_i2c: increase I2C timeout values and make them configurable
The value of I2C_TIMEOUT in fsl_i2c.c has several problems.  First, it is
defined as CONFIG_HZ/4, but it is used as a count of microseconds, so it makes
no sense to derive it from a clock rate.  Second, the current value (250) is
too low for some boards, so it needs to be increased.  Third, the timeout
necessary for multiple-master arbitration is larger than the timeout for basic
read/write operations, so we shouldn't have a single constant for both timeouts.
Finally, it would be nice if we could override these values on a per-board
basis.

Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-by: Wolfgang Denk <wd@denx.de>
Tested-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Peter Tyser <ptyser@xes-inc.com>
2009-09-06 11:26:05 +02:00
Wolfgang Denk
53cc18c71b Minor coding style cleanup.
Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-08-10 10:38:34 +02:00
Tom Rix
7f79dfb48b OMAP I2C Fix the sampling clock.
This problem is seen on Zoom1 and Zoom2 in the startup and
when i2c probe is used

Before :

In:    serial
Out:   serial
Err:   serial
timed out in wait_for_bb: I2C_STAT=1000
timed out in wait_for_bb: I2C_STAT=1000
timed out in wait_for_bb: I2C_STAT=1000
timed out in wait_for_pin: I2C_STAT=1000
I2C read: I/O error
timed out in wait_for_bb: I2C_STAT=1000
timed out in wait_for_bb: I2C_STAT=1000
Die ID #327c00020000000004013ddd05026013
Hit any key to stop autoboot:  0
OMAP3 Zoom1# i2c probe
Valid chip addresses:timed out in wait_for_bb: I2C_STAT=1000
 02 03 04 05 06 07 08 09 0A 0B 0C 0D <snip>

After :

In:    serial
Out:   serial
Err:   serial
Die ID #327c00020000000004013ddd05026013
Hit any key to stop autoboot:  0
OMAP3 Zoom1# i2c probe
Valid chip addresses: 48 49 4A 4B

The addresses are for the twl4030.

The prescalar that converts the function clock to the sampling
clock is hardcoded to 0.  The reference manual recommends 7
if the function clock is 96MHz.

Instead of just changing the hardcoded values, the prescalar
is calculated from the value I2C_IP_CLK.

The i2c #defines are in kHz.  The speed passed into the
i2c init routine is in Hz.  To be consistent, change the
defines to be in Hz.

The timing calculations are based on what is done in the
linux 2.6.30 kernel in drivers/i2c/buses/i2c_omap.c as
apposed to what is done in TRM.

The major variables in the timing caculations are
specified as #defines that can be overriden as required.

The variables and their defaults are

I2C_IP_CLK				SYSTEM_CLOCK_96
I2C_INTERNAL_SAMPLING_CLK		19200000
I2C_FASTSPEED_SCLL_TRIM			6
I2C_FASTSPEED_SCLH_TRIM			6
I2C_HIGHSPEED_PHASE_ONE_SCLL_TRIM	I2C_FASTSPEED_SCLL_TRIM
I2C_HIGHSPEED_PHASE_ONE_SCLH_TRIM	I2C_FASTSPEED_SCLH_TRIM
I2C_HIGHSPEED_PHASE_TWO_SCLL_TRIM	I2C_FASTSPEED_SCLL_TRIM
I2C_HIGHSPEED_PHASE_TWO_SCLH		I2C_FASTSPEED_SCLH_TRIM

This was runtime verified on Zoom1, Zoom2, Beagle and Overo.
The 400kHz and 3.4M cases were verifed on test Zoom1,
Zoom2, Beagle and Overo configurations.

Testing for omap2 will be done in a second step as Nishanth
and Jean-Christophe commented.

Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Heiko Schocher <hs@denx.de>
2009-07-28 08:52:33 +02:00
Heiko Schocher
4ce5a72851 arm, i2c: added support for the TWSI I2C Interface
Signed-off-by: Heiko Schocher <hs@denx.de>
2009-07-28 08:20:58 +02:00
Heiko Schocher
39df00d9ae i2c, mpc83xx: add CONFIG_SYS_I2C_INIT_BOARD for fsl_i2c
This patch adds the possibility to call a board specific
i2c bus reset routine for the fsl_i2c bus driver, and adds
this option for the keymile kmeter1 board.

The deblock sequence for this board is implemented and
tested in the following way:

CR = 0x20 (release SDA and SCL pin)
CR = 0xa0 (start read)
dummy read
dummy read
if 2. dummy read == 0x00
	3. dummy read

CR = 0x80 (SDA and SCL now 1 SR = 0x86)
CR = 0x00 (Modul reset SR=0x81)
CR = 0x80 (SDA and SCL = 1, SR = 0x81)

Signed-off-by: Heiko Schocher <hs@denx.de>
2009-07-21 07:06:26 +02:00
Peter Meerwald
98ab14e858 Blackfin: TWI/I2C: fix pure writes
If doing a pure write with register address and data (not a read/write
combo transfer), we don't set the initial transfer length properly which
ends up causing only the register address to be transferred.

While we're here, fix the i2c_write() parameter description of the buffer.

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-30 08:27:45 +02:00
Peter Tyser
0f89c54be9 i2c: Update references to individual i2c commands
The individual i2c commands imd, imm, inm, imw, icrc32, iprobe, iloop,
and isdram are no longer available so all references to them have been
updated to the new form of "i2c <cmd>".

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2009-06-12 20:39:46 +02:00
Peter Tyser
655b34a78a i2c: Create common default i2c_[set|get]_bus_speed() functions
New default, weak i2c_get_bus_speed() and i2c_set_bus_speed() functions
replace a number of architecture-specific implementations.

Also, providing default functions will allow all boards to enable
CONFIG_I2C_CMD_TREE.  This was previously not possible since the
tree-form of the i2c command provides the ability to display and modify
the i2c bus speed which requires i2c_[set|get]_bus_speed() to be
present.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2009-06-12 20:39:45 +02:00
Peter Tyser
f0722ee762 tsi108_i2c: Add i2c_init() stub function
Add the i2c_init() function so that the tsi108_i2c.c driver fits
U-Boot's standard I2C API which is utilized by cmd_i2c.c

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2009-06-12 20:39:45 +02:00
Wolfgang Denk
dfc91c3395 Merge branch 'master' of git://git.denx.de/u-boot-arm 2009-04-02 00:24:33 +02:00
Jens Scharsig
d144f94d59 soft_i2c.c compiler/linker error
This patch fix the compiler/linker errors

common/cmd_i2c.c:1252: undefined reference to `i2c_get_bus_speed'
common/cmd_i2c.c:1256: undefined reference to `i2c_set_bus_speed'

if board use CONFIG_I2C_CMD_TREE and CONFIG_I2C_MULTI_BUS is not
uesd/undef (wrong define order)

and

removes additional empty lines

Signed-off-by: Jens Scharsig <esw@bus-elektronik.de>
2009-03-31 08:29:50 +02:00
Jean-Christophe PLAGNIOL-VILLARD
d3b6357741 s3c24x0: move i2c driver to drivers/i2c
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-03-30 18:58:40 +02:00
Jean-Christophe PLAGNIOL-VILLARD
942ba9969b davinci: move i2c driver to drivers/i2c
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-03-30 18:58:39 +02:00
Jean-Christophe PLAGNIOL-VILLARD
50f601cca8 s3c44b0: move i2c driver to drivers/i2c
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-03-29 23:01:40 +02:00
Heiko Schocher
1b6275dfb1 8xx: add support for new keymile kmsupx4 board.
This patch adds support for the kmsupx4 board from Keymile,
based on a Freescale MPC852T CPU

- serial console on SMC1
- 32 MB SDRAM
- 32 MB NOR Flash
- Ethernet over SCC3
- I2C Bitbang

Signed-off-by: Heiko Schocher <hs@denx.de>
2009-03-18 20:50:05 +01:00
Heiko Schocher
c1bce4fff7 83xx, i2c: add mux support for fsl_i2c
This patch adds I2C mux support for the fsl_i2c driver. This
allows you to add "new" i2c busses, which are reached over
i2c muxes. For more infos, please look in the README and
search for CONFIG_I2C_MUX.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2009-03-05 18:21:17 -06:00
Guennadi Liakhovetski
e7de18afe8 i.MX31: Start the I2C clock on driver initialisation
i.MX31 powers on with most clocks running, so, after a power on this explicit
clock start up is not required. However, as Linux boots it disables most clocks
to save power. This includes the I2C clock. If we then soft reboot from Linux
the I2C clock stays off. This breaks the phycore, which has its environment in
I2C EEPROM. Fix the problem by explicitly starting the clock in I2C driver
initialisation routine.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Ack-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-02-14 10:00:51 +01:00
Wolfgang Denk
6c6e042ab3 Merge branch 'master' of git://git.denx.de/u-boot-arm 2009-02-01 21:38:07 +01:00
Mike Frysinger
be853bf86b Blackfin: overhaul i2c driver
The current Blackfin i2c driver does not work properly with certain devices
due to it breaking up transfers incorrectly.  This is a rewrite of the
driver and relocates it to the newer place in the source tree.

Also remove duplicated I2C speed defines in Blackfin board configs and
disable I2C slave address usage since it isn't implemented.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-01-28 13:26:13 -05:00
Andrew Dyer
2ac6985a74 soft_i2c.c add option for repeated start in i2c_read()
This patch adds a #define to optionally change the behaviour of
i2c_read() in soft_i2c.c to send an I2C repeated start instead of a
stop-start between sending the device address pointer write and
reading back the data.  The current behaviour is retained as the
default.

While most devices will work either way, I have a smart battery(*)
that requires repeated start, and someone at some point found a
device that required a stop-start.

(*) http://www.inspired-energy.com/Standard_Products/NL2054/NL2054%20Rev1.0%20Data%20Sheet.pdf

Signed-off-by: Andrew Dyer <adyer@righthandtech.com>
2009-01-27 22:26:31 +01:00
Dirk Behme
7d264c1ef2 OMAP3: Add I2C support
Add I2C support.

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2009-01-24 17:51:22 +01:00
Wolfgang Denk
455ae7e87f Coding style cleanup, update CHANGELOG.
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-12-16 01:02:17 +01:00
Timur Tabi
ecf5f077c8 i2c: merge all i2c_reg_read() and i2c_reg_write() into inline functions
All implementations of the functions i2c_reg_read() and
i2c_reg_write() are identical. We can save space and simplify the
code by converting these functions into inlines and putting them in
i2c.h.

Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-By: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-12-15 23:46:21 +01:00
Trent Piepho
5e3ab68e9a Section name should be ".data", not "data"
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-12-09 00:48:41 +01:00
Dirk Behme
e23c7c95a9 ARM: OMAP: Convert IO macros
Convert IO macros to readx/writex.

Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
2008-11-21 01:44:35 +01:00
Wolfgang Denk
8ed44d91c8 Cleanup: fix "MHz" spelling
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-10-21 11:25:39 +02:00
Heiko Schocher
a21ca95f8b mgsuvd: fix compiler warning when using soft_i2c driver
Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18 21:54:04 +02:00
Jean-Christophe PLAGNIOL-VILLARD
6d0f6bcf33 rename CFG_ macros to CONFIG_SYS
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00
Heiko Schocher
67b23a3228 I2C: adding new "i2c bus" Command to the I2C Subsystem.
With this Command it is possible to add new I2C Busses,
which are behind 1 .. n I2C Muxes. Details see README.

Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18 21:54:02 +02:00
Heiko Schocher
4ca107effe soft_i2c: Add CFG_I2C_INIT_BOARD option
This patch adds the option for a boardspecific
I2C deblocking mechanism for the soft i2c driver.

Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18 21:54:02 +02:00
Heiko Schocher
98aed37958 soft_i2c: prevent compiler warnings if driver does not use CPU Pins.
This patch fixes the following warnings, when using
the soft_i2c driver using no CPU pins on MPC82xx or MPC8xx
systems:

soft_i2c.c: In function 'send_reset':
soft_i2c.c:93: warning: unused variable 'immr'
soft_i2c.c: In function 'send_start':
soft_i2c.c:124: warning: unused variable 'immr'
soft_i2c.c: In function 'send_stop':
soft_i2c.c:146: warning: unused variable 'immr'
soft_i2c.c: In function 'send_ack':
soft_i2c.c:171: warning: unused variable 'immr'
soft_i2c.c: In function 'write_byte':
soft_i2c.c:196: warning: unused variable 'immr'
soft_i2c.c: In function 'read_byte':
soft_i2c.c:244: warning: unused variable 'immr'

Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18 21:54:01 +02:00
Heiko Schocher
799b784aa0 i2c: add CONFIG_I2C_MULTI_BUS for soft_i2c and mpc8260 i2c driver.
Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18 21:54:01 +02:00
Wolfgang Denk
e99e9575bb Merge branch 'Makefile' of git://git.denx.de/u-boot-arm 2008-09-01 00:16:29 +02:00
Jean-Christophe PLAGNIOL-VILLARD
4d75e0aa9c soft_i2c: move to drivers/i2c
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-08-29 12:25:02 +02:00
TsiChung Liew
5d9a5efa4b Add I2C frequency dividers for ColdFire
The existing I2C freqency dividers for FDR does not apply
to ColdFire platforms; thus, a seperate table is added
based on MCF5xxx Reference Manual

Signed-off-by: Luigi 'Comio' Mantellini <luigi.mantellini@idf-hit.com>
Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
Acked-by: Tabi Timur <timur@freescale.com>
2008-08-28 09:16:54 -06:00
Michal Simek
a4a549b4b5 i2c: Clean drivers/i2c/ Makefile
Signed-off-by: Michal Simek <monstr@monstr.eu>
2008-08-18 23:24:01 +02:00
Stefan Roese
f2302d4430 Fix merge problems
Signed-off-by: Stefan Roese <sr@denx.de>
2008-08-06 14:05:38 +02:00
Wolfgang Denk
53677ef18e Big white-space cleanup.
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).

Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-05-21 00:14:08 +02:00
Kumar Gala
3e3f766a52 Fix warnings introduced by I2C bus speed setting patch
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-04-13 14:54:16 -07:00
Sascha Hauer
cdace06612 add an i2c driver for mx31
This patch adds an i2c driver for Freescale i.MX processors

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
2008-04-13 14:21:43 -07:00
Wolfgang Denk
950a392464 Revert merge of git://www.denx.de/git/u-boot-arm, commit 62479b18:
Reverting became necessary after it turned out that the patches in
the u-boot-arm repo were modified, and in some cases corrupted.

This reverts the following commits:

	066bebd635
	7a837b7310
	c88ae20580
	a147e56f03
	d6674e0e2a
	8c8463cce4
	c98b47ad24
	8bf69d8178
	8c16cb0d3b
	a574a73852
	1377b5583a
	1704dc2091

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-04-11 15:11:26 +02:00
Sascha Hauer
8c8463cce4 add an i2c driver for mx31
This patch adds an i2c driver for Freescale i.MX processors

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
2008-03-30 11:32:16 +01:00
Timur Tabi
d8c82db482 Add support for setting the I2C bus speed in fsl_i2c.c
Add support to the Freescale I2C driver (fsl_i2c.c) for setting and querying
the I2C bus speed.  Current 8[356]xx boards define the CFG_I2C_SPEED macro,
but fsl_i2c.c ignores it and uses conservative value when programming the
I2C bus speed.

Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
2008-03-27 00:09:17 +01:00
Jean-Christophe PLAGNIOL-VILLARD
080c646dbf drivers/i2c : move i2c drivers to drivers/i2c
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2007-11-20 20:14:18 +01:00