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Staging: comedi: Added reading of board serial number from eeprom for m-series boards 

Nothing is done with it yet, eventually it will be made available to
user-space via a readable file in sysfs.

From: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: David Schleef <ds@schleef.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Frank Mori Hess 2008-11-17 21:36:45 +00:00 committed by Greg Kroah-Hartman
parent 75c794f0d2
commit f8db88ef1f
2 changed files with 12 additions and 1 deletions
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12
drivers/staging/comedi/drivers/ni_pcimio.c
View File

@ -111,6 +111,7 @@ Bugs:
#include "../comedidev.h"
#include <asm/byteorder.h>
#include <linux/delay.h>
#include "ni_stc.h"
@ -1526,6 +1527,8 @@ static void m_series_init_eeprom_buffer(comedi_device * dev)
{
static const int Start_Cal_EEPROM = 0x400;
static const unsigned window_size = 10;
static const int serial_number_eeprom_offset = 0x4;
static const int serial_number_eeprom_length = 0x4;
unsigned old_iodwbsr_bits;
unsigned old_iodwbsr1_bits;
unsigned old_iodwcr1_bits;
@ -1537,9 +1540,16 @@ static void m_series_init_eeprom_buffer(comedi_device * dev)
writel(0x0, devpriv->mite->mite_io_addr + MITE_IODWBSR);
writel(((0x80 | window_size) | devpriv->mite->daq_phys_addr),
devpriv->mite->mite_io_addr + MITE_IODWBSR_1);
writel(0x0, devpriv->mite->mite_io_addr + MITE_IODWCR_1);
writel(0x1 | old_iodwcr1_bits, devpriv->mite->mite_io_addr + MITE_IODWCR_1);
writel(0xf, devpriv->mite->mite_io_addr + 0x30);
BUG_ON(serial_number_eeprom_length > sizeof(devpriv->serial_number));
for (i = 0; i < serial_number_eeprom_length; ++i) {
char *byte_ptr = (char*)&devpriv->serial_number + i;
*byte_ptr = ni_readb(serial_number_eeprom_offset + i);
}
devpriv->serial_number = be32_to_cpu(devpriv->serial_number);
for (i = 0; i < M_SERIES_EEPROM_SIZE; ++i) {
devpriv->eeprom_buffer[i] = ni_readb(Start_Cal_EEPROM + i);
}

1
drivers/staging/comedi/drivers/ni_stc.h
View File

@ -1484,6 +1484,7 @@ typedef struct ni_board_struct {
\
sampl_t ai_fifo_buffer[0x2000]; \
uint8_t eeprom_buffer[M_SERIES_EEPROM_SIZE]; \
uint32_t serial_number; \
\
struct mite_struct *mite; \
struct mite_channel *ai_mite_chan; \