[#6197] can't regonize lcd device in i2c lcd driver testing over GPIO(2010)

[#6197] can't regonize lcd device in i2c lcd driver testing over GPIO

Submitted By: angelia wu

Open Date

2010-08-20 00:21:51 Close Date

2010-08-30 01:44:42

Priority:

Medium Assignee:

steven miao

Status:

Closed Fixed In Release:

N/A

Found In Release:

2010R1 Release:

Blackfin Linux:2010R1

Category:

N/A Board:

STAMP

Processor:

BF533 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

svn-4681

App binary format:

N/A

Summary: can't regonize lcd device in i2c lcd driver testing over GPIO

Details:

can't regonize lcd device in i2c lcd driver testing over GPIO.

when 'ls' in the folder 'sys/bus/i2c/devices' ,it should show a folder "0022.*(\[0-9]-002f)",but it hasn't. so the lcd can't show anything.

the test steps as follow.

root:/> modprobe bfin_twi_lcd

bfin_twi_lcd: loaded

root:/> lsmod

Module Size Used by

bfin_twi_lcd 2553 0

root:/> cd sys/bus/i2c/devices

root:/sys/bus/i2c/devices> ls

0-0022 0-002b i2c-0

root:/> twilcd_test -h

TWI LCD Test Application

Usage: twilcd_test [-h?v] [-c] [-d CONTROLLER] [-p POSITION] [Message String]

-h? this help

-v print version info

-c Clear Display

-d Number use 1,2,3 for CONTROLLER 1,2,BOTH

-p Char POS Position where to put the string

Example: twilcd_test -p 0 "Hello World !"

root:/> twilcd_test -p 0 "Hello World !"

TWI LCD Test Application

Position : 0

Message : Hello World !

root:/> twilcd_test -p 0 "`uptime`"

TWI LCD Test Application

Position : 0

Message : 03:12:31 up 1 min, load average: 0.00, 0.00, 0.00

root:/> twilcd_test -p 4 "`date`"

TWI LCD Test Application

Position : 4

Message : Fri Nov 14 03:12:36 UTC 2014

root:/> twilcd_test "`cat /proc/interrupts | grep BFIN_UART_TX`"

TWI LCD Test Application

Message : 22: 17883 INTN BFIN_UART_TX

the following is boot log.

SMC91111: MAC 00:e0:22:fe:07:59

Using SMC91111-0 device

TFTP from server 10.100.4.174; our IP address is 10.100.4.50

Filename 'uImage'.

Load address: 0x1000000

Loading: #################################################################

#################################################################

###################

done

Bytes transferred = 4088419 (3e6263 hex)

## Booting kernel from Legacy Image at 01000000 ...

Image Name: bf533-2.6.34.4-ADI-2010R1-pre-sv

Created: 2010-08-20 2:14:05 UTC

Image Type: Blackfin Linux Kernel Image (gzip compressed)

Data Size: 4088355 Bytes = 3.9 MB

Load Address: 00001000

Entry Point: 0019df90

Verifying Checksum ... OK

Uncompressing Kernel Image ... OK

Starting Kernel at = 0019df90

Linux version 2.6.34.4-ADI-2010R1-pre-svn9082 (test@uclinux41) (gcc version 4.3.5 (ADI-trunk/svn-4681) ) #76 Fri Aug 20 10:14:00 CST 2010

bootconsole [early_shadow0] enabled

bootconsole [early_BFuart0] enabled

early printk enabled on early_BFuart0

Limiting kernel memory to 56MB due to anomaly 05000263

Board Memory: 128MB

Kernel Managed Memory: 128MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x00119718

rodata = 0x00119718-0x001758f0

bss = 0x00176000-0x001863ac

data = 0x001863ac-0x00196000

stack = 0x00194000-0x00196000

init = 0x00196000-0x007bf000

available = 0x007bf000-0x03800000

DMA Zone = 0x07f00000-0x08000000

Hardware Trace Active and Enabled

Boot Mode: 0

Compiled for ADSP-BF533 Rev 0.3

Blackfin Linux support by http://blackfin.uclinux.org/

Processor Speed: 497 MHz core clock and 82 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

External memory: cacheable in instruction cache

Data Cache Enabled for CPU0

External memory: cacheable (write-back) in data cache

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 14224

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=11059200 earlyprintk=serial,uart0,57600 console=ttyBF0,57600 ip=10.100.4.50:10.100.4.174:10.100.4.174:f

PID hash table entries: 256 (order: -2, 1024 bytes)

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory available: 48844k/131072k RAM, (6308k init code, 1121k kernel code, 499k data, 1024k dma, 73276k reserved)

Hierarchical RCU implementation.

NR_IRQS:81

Configuring Blackfin Priority Driven Interrupts

console [ttyBF0] enabled, bootconsole disabled

Calibrating delay loop... 989.18 BogoMIPS (lpj=1978368)

Security Framework initialized

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (16 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 64 KB (51 KB free)

NET: Registered protocol family 16

Blackfin DMA Controller

stamp_init(): registering device resources

bio: create slab <bio-0> at 0

bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc00500, dma channel@5

Switching to clocksource bfin_cs_cycles

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 2048 (order: 2, 16384 bytes)

TCP bind hash table entries: 2048 (order: 1, 8192 bytes)

TCP: Hash tables configured (established 2048 bind 2048)

TCP reno registered

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

msgmni has been set to 95

io scheduler noop registered

io scheduler cfq registered (default)

bfin-uart: Blackfin serial driver

bfin-uart.0: ttyBF0 at MMIO 0xffc00400 (irq = 21) is a BFIN-UART

brd: module loaded

smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@fluxnic.net>

eth0: SMC91C11xFD (rev 1) at 20300300 IRQ 40 [nowait]

eth0: Ethernet addr: 00:e0:22:fe:07:59

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

i2c /dev entries driver

i2c-gpio i2c-gpio.0: using pins 2 (SDA) and 3 (SCL)

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 2014-11-14 03:11:17 UTC (1415934677)

eth0: link down

IP-Config: Complete:

device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,

host=bf533-stamp, domain=, nis-domain=(none),

bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=

dma_alloc_init: dma_page @ 0x027c3000 - 256 pages at 0x07f00000

Freeing unused kernel memory: 6308k freed

eth0: link up, 100Mbps, full-duplex, lpa 0x41E1

_____________________________________

a8888b. / Welcome to the uClinux distribution \

d888888b. / _ _ \

8P"YP"Y88 / | | |_| __ __ (TM) |

8|o||o|88 _____/ | | _ ____ _ _ \ \/ / |

8' .88 \ | | | | _ \| | | | \ / |

8`._.' Y8. \ | |__ | | | | | |_| | / \ |

d/ `8b. \ \____||_|_| |_|\____|/_/\_\ |

dP . Y8b. \ For embedded processors including |

d8:' " `::88b \ the Analog Devices Blackfin /

d8" 'Y88b \___________________________________/

:8P ' :888

8a. : _a88P For further information, check out:

._/"Yaa_: .| 88P| - http://blackfin.uclinux.org/

\ YP" `| 8P `. - http://docs.blackfin.uclinux.org/

/ \.___.d| .' - http://www.uclinux.org/

`--..__)8888P`._.' jgs/a:f - http://www.analog.com/blackfin

Have a lot of fun...

BusyBox v1.16.2 (2010-08-20 10:12:26 CST) hush - the humble shell

Follow-ups

--- steven miao 2010-08-26 05:04:43

new driver for ad5252 digital potentiometer. See wiki to update test steps

https://docs.blackfin.uclinux.org/doku.php?id=blackfin_twi_lcd_hd44780_based_driver#blackfin_test_programs

--- angelia wu 2010-08-30 01:44:42

i test it again according wiki and now the bug is disappear.

so i closed the bug 6197.

Thank you steven miao.

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