View source for Linux 2.6.23 integration

==Generic==
* in in arch/arm/mach-imx/generic.c line 338, remove __init in void __init set_imx_fb_info(struct imxfb_mach_info *hard_imx_fb_info) otherwise kernel gives compilation warning:
 WARNING: vmlinux.o(__ksymtab+0x3d8): Section mismatch: reference to .init.text:set_imx_fb_info (between '__ksymtab_set_imx_fb_info' and '__ksymtab_imx_get_usb_clk')
* in arch/arm/mach-imx/apf9328.c line 28, config.h doesn't exist anymore
* do some modifications in scripts/checksyscalls.sh to prevent "missing syscalls warning"

==Serial==
* Serial registers Macros (like UFCR()) have been moved from imx-regs.h -> imx serial driver C file. So in apf9328.c we should remove these lines:
     // Serial
    UFCR(IMX_UART1_BASE) = 0xa81;
    UFCR(IMX_UART2_BASE) = 0xa81;

==I2C==
* in ''drivers/i2c/busses/i2c-imx.c'', SA_INTERRUPT is now obsolete and should be replaced by IRQF_DISABLED in request_irq() (line 575)
* in drivers/i2c/busses/i2c-imx.h line 63, replace #define I2C_IMX_DEFAULT_CLKDIV  0x0f with #define I2C_IMX_DEFAULT_CLKDIV  16 otherwise it's giving error in driver compilation
* in drivers/i2c/busses/i2c-imx.h line 104, struct i2c_algorithm doesn't have slave_send nor slave_recv anymore
==MTD==
* in drivers/mtd/maps/apf9328.c line 28, consistent_sync() should be replaced by flush_ioremap_region() otherwise kernel is crashing (+adding of #include <asm/cacheflush.h>)

==RTC==
* in drivers/rtc/rtc-ds1374.c line 59 ''dev_dbg(&client->dev, "%s: raw read data...'' should be commented otherwise not compiling

==Backlight==
* struct backlight_properties backlight_device have changed backlight_operations was introduced
* backlight_device_register() prototype has changed...

==PWM==
* remove warnings in driver
* use IRQF_DISABLE

==Patches to remove ??==
* 012-linux-2.6.23.1-apm9328.diff

==Problems encountered==
* kernel is 4,3MBytes big -> LD bug ?? -> http://lkml.org/lkml/2007/9/14/303 + mailing list arm (pb appear with 2.6.22)

==Drivers test summary==
{| border="1" cellpadding="5" cellspacing="0" summary="MMC+"
|- style="background:#efefef;"
! '''Device''' || colspan="2" | '''Compiling ? <br> Static / Module''' || ''' Working ? ''' || '''Comments'''
|----------------
|'''ADC''' || ??? || NT || NT ||    
|----------------
|'''Backlight''' || style="background:#00ff00;" | OK || style="background:#00ff00;" | OK || style="background:#00ff00;" | OK ||   
|----------------
|'''CH7024 (Video Out)''' || style="background:#00ff00;" | OK || NA || style="background:#00ff00;" | OK ||   
|----------------
|'''DAC''' || style="background:#00ff00;" | OK || NA || style="background:#00ff00;" | OK ||   
|----------------
|'''Ethernet (DM9000)''' || style="background:#00ff00;" | OK || NA || style="background:#ffff00;" | OK ?? || NFS boot not working ??  
|----------------
|'''FPGA PS/2''' || NT || NT || NT ||   
|----------------
|'''LCD''' || style="background:#00ff00;" | OK || NA || style="background:#00ff00;" | OK || message starting PID 235, tty 
|----------------
|'''MMC/SD''' || style="background:#00ff00;" | OK || NA || style="background:#00ff00;" | MMC OK || Linux boot on MMC Ok
|----------------
|'''PWM classic''' || style="background:#00ff00;" | OK || style="background:#00ff00;" | OK || style="background:#00ff00;" | OK ||  
|----------------
|'''PWM sound''' || ??? || NT || NT ||  
|----------------
|'''RTC''' || style="background:#00ff00;" | OK || style="background:#00ff00;" | OK || style="background:#00ff00;" | OK ||  
|----------------
|'''TSC2102''' || ??? || NT || NT ||  
|----------------
|'''USB (gadget)''' || ??? || NT || NT ||   
|----------------
|'''USB (host)''' || NA || style="background:#00ff00;" | OK || style="background:#00ff00;" | OK ||  
|----------------
|'''Watchdog''' || NT || NT || NT ||  
|----------------
|}