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Serial driver for 4G+ ipods

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Jacob83:
Hi guys,
I cant understand, why it is that complicated to implement a serial driver. I think you have to know the register for the  baudrate and anythin else is done by hardware... isn't it??
I would really enjoy my ipod mini with serial port for my homebre gadgets...
regards, Jacob
http://www.avr-projects.info

Llorean:
If it's easy, we look forward to your patch soon.
If you aren't both capable of doing it and plan on doing it, kindly shut up. Saying "it ought to be easy" doesn't accomplish anything. Especially when how easy something in doesn't always even factor into whether it gets done or not.

Jacob83:
Hmm...
but don't you think the only thing to do is to write some (

saratoga:
I believe no one has looked into implementing the serial port driver.  It may be easy or hard, we just don't know.

Jacob83:
Okay, i am nearly sure, that the only problem are the adresses of the registers...
I found this in the sources of ipodlinux (serial.h)
I found as well a log of an irc chat about this issue, see http://rainstorm.org/ipod/stats/ipodlinux.log-2006-08-16
but unfortunately i don't know that much about arms... so i'll have to wait for someone to find out how it works on newer ipod generations.
regards,
Jacob


--- Code: ---/* PP5002 */
#define PP5002_IPOD_SER0_BASE 0xc0006000
#define PP5002_IPOD_SER1_BASE 0xc0006040
/* PP5020 */
#define PP5020_IPOD_SER0_BASE 0x70006000
#define PP5020_IPOD_SER1_BASE 0x70006040
/* The UART is clocked at 24MHz */
#define BASE_BAUD (24576000 / 16)
#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF|ASYNC_SKIP_TEST)
#define DEFAULT_CFLAGS (B9600 | CS8 | CREAD | HUPCL | CLOCAL)
#define RS_TABLE_SIZE 2
#define STD_SERIAL_PORT_DEFNS \
{ \
magic: 0, \
baud_base: BASE_BAUD, \
irq: PP5002_SER0_IRQ, \
flags: STD_COM_FLAGS, \
type: PORT_UNKNOWN, \
iomem_base: (u8*)PP5002_IPOD_SER0_BASE, \
iomem_reg_shift: 2, \
io_type: SERIAL_IO_MEM \
}, /* ttyS0 */ \
{ \
magic: 0, \
baud_base: BASE_BAUD, \
irq: PP5002_SER1_IRQ, \
flags: STD_COM_FLAGS, \
type: PORT_UNKNOWN, \
iomem_base: (u8*)PP5002_IPOD_SER1_BASE, \
iomem_reg_shift: 2, \
io_type: SERIAL_IO_MEM \
} /* ttyS1 */

--- End code ---

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