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staging: comedi: addi_eeprom: move the eeprom offset to addi_eeprom_r…
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…eadw()

All the addi_eeprom_readw() calls have the offset to the start of user
data (0x100) as part of the address calculation. Create a define for this
constant and move it's addition to the address into addi_eeprom_readw().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored and Greg Kroah-Hartman committed Oct 30, 2012
1 parent 66be78f commit 85c1dcb
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Showing 2 changed files with 27 additions and 32 deletions.
2 changes: 1 addition & 1 deletion drivers/staging/comedi/drivers/addi-data/addi_common.c
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Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,7 @@ static int i_ADDIDATA_InsnReadEeprom(struct comedi_device *dev,
unsigned short w_Data;

w_Data = addi_eeprom_readw(devpriv->i_IobaseAmcc,
this_board->pc_EepromChip, 0x100 + (2 * w_Address));
this_board->pc_EepromChip, 2 * w_Address);
data[0] = w_Data;

return insn->n;
Expand Down
57 changes: 26 additions & 31 deletions drivers/staging/comedi/drivers/addi-data/addi_eeprom.c
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,8 @@ You should also find the complete GPL in the COPYING file accompanying this sour
+----------+-----------+------------------------------------------------+
*/

#define NVRAM_USER_DATA_START 0x100

#define NVCMD_BEGIN_READ (0x7 << 5) /* nvRam begin read command */
#define NVCMD_LOAD_LOW (0x4 << 5) /* nvRam load low command */
#define NVCMD_LOAD_HIGH (0x5 << 5) /* nvRam load high command */
Expand Down Expand Up @@ -229,6 +231,9 @@ static unsigned short addi_eeprom_readw(unsigned long iobase,
{
unsigned short val = 0;

/* Add the offset to the start of the user data */
addr += NVRAM_USER_DATA_START;

if (!strcmp(type, "S5920") || !strcmp(type, "S5933"))
val = addi_eeprom_readw_nvram(iobase, addr);

Expand All @@ -246,17 +251,15 @@ static int i_EepromReadDigitalInputHeader(unsigned long iobase,
unsigned short w_Temp;

/* read nbr of channels */
s_Header->w_Nchannel = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 6);
s_Header->w_Nchannel = addi_eeprom_readw(iobase, type, w_Address + 6);

/* interruptible or not */
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 8);
w_Temp = addi_eeprom_readw(iobase, type, w_Address + 8);
s_Header->b_Interruptible = (unsigned char) (w_Temp >> 7) & 0x01;

/* How many interruptible logic */
s_Header->w_NinterruptLogic = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 10);
w_Address + 10);

return 0;
}
Expand All @@ -268,7 +271,7 @@ static int i_EepromReadDigitalOutputHeader(unsigned long iobase,
{
/* Read Nbr channels */
s_Header->w_Nchannel = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 6);
w_Address + 6);
return 0;
}

Expand All @@ -283,14 +286,14 @@ static int i_EepromReadTimerHeader(unsigned long iobase,

/* Read No of Timer */
s_Header->w_Ntimer = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 6);
w_Address + 6);
/* Read header size */
for (i = 0; i < s_Header->w_Ntimer; i++) {
s_Header->s_TimerDetails[i].w_HeaderSize =
addi_eeprom_readw(iobase, type,
0x100 + w_Address + 8 + w_Size + 0);
w_Address + 8 + w_Size + 0);
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 8 + w_Size + 2);
w_Address + 8 + w_Size + 2);

/* Read Resolution */
s_Header->s_TimerDetails[i].b_Resolution =
Expand All @@ -301,7 +304,7 @@ static int i_EepromReadTimerHeader(unsigned long iobase,
(unsigned char) (w_Temp >> 4) & 0x3F;

w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 8 + w_Size + 4);
w_Address + 8 + w_Size + 4);

/* Read MinTiming */
s_Header->s_TimerDetails[i].w_MinTiming = (w_Temp >> 6) & 0x3FF;
Expand All @@ -323,12 +326,10 @@ static int i_EepromReadAnlogOutputHeader(unsigned long iobase,
unsigned short w_Temp;

/* No of channels for 1st hard component */
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 10);
w_Temp = addi_eeprom_readw(iobase, type, w_Address + 10);
s_Header->w_Nchannel = (w_Temp >> 4) & 0x03FF;
/* Resolution for 1st hard component */
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 16);
w_Temp = addi_eeprom_readw(iobase, type, w_Address + 16);
s_Header->b_Resolution = (unsigned char) (w_Temp >> 8) & 0xFF;
return 0;
}
Expand All @@ -340,19 +341,18 @@ static int i_EepromReadAnlogInputHeader(unsigned long iobase,
struct str_AnalogInputHeader *s_Header)
{
unsigned short w_Temp, w_Offset;
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 10);
w_Temp = addi_eeprom_readw(iobase, type, w_Address + 10);
s_Header->w_Nchannel = (w_Temp >> 4) & 0x03FF;
s_Header->w_MinConvertTiming = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 16);
w_Address + 16);
s_Header->w_MinDelayTiming = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 30);
w_Address + 30);
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 20);
w_Address + 20);
s_Header->b_HasDma = (w_Temp >> 13) & 0x01; /* whether dma present or not */

w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + 72); /* reading Y */
/* reading Y */
w_Temp = addi_eeprom_readw(iobase, type, w_Address + 72);
w_Temp = w_Temp & 0x00FF;
if (w_Temp) /* Y>0 */
{
Expand All @@ -365,8 +365,7 @@ static int i_EepromReadAnlogInputHeader(unsigned long iobase,
}

/* read Resolution */
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + w_Address + w_Offset);
w_Temp = addi_eeprom_readw(iobase, type, w_Address + w_Offset);
s_Header->b_Resolution = w_Temp & 0x001F; /* last 5 bits */

return 0;
Expand All @@ -388,25 +387,21 @@ static int i_EepromReadMainHeader(unsigned long iobase,
struct str_AnalogInputHeader s_AnalogInputHeader;

/* Read size */
s_MainHeader.w_HeaderSize = addi_eeprom_readw(iobase, type,
0x100 + 8);
s_MainHeader.w_HeaderSize = addi_eeprom_readw(iobase, type, 8);

/* Read nbr of functionality */
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + 10);
w_Temp = addi_eeprom_readw(iobase, type, 10);
s_MainHeader.b_Nfunctions = (unsigned char) w_Temp & 0x00FF;

/* Read functionality details */
for (i = 0; i < s_MainHeader.b_Nfunctions; i++) {
/* Read Type */
w_Temp = addi_eeprom_readw(iobase, type,
0x100 + 12 + w_Count);
w_Temp = addi_eeprom_readw(iobase, type, 12 + w_Count);
s_MainHeader.s_Functions[i].b_Type = (unsigned char) w_Temp & 0x3F;
w_Count = w_Count + 2;
/* Read Address */
s_MainHeader.s_Functions[i].w_Address =
addi_eeprom_readw(iobase, type,
0x100 + 12 + w_Count);
addi_eeprom_readw(iobase, type, 12 + w_Count);
w_Count = w_Count + 2;
}

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