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Use symbolic names for SEEPROM pins

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marcan 2009-03-06 05:22:22 +01:00 committed by bushing
parent 683ea6d8eb
commit 4d1a048d42
1 changed files with 12 additions and 11 deletions
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23
seeprom.c
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@ -2,6 +2,7 @@
#include "utils.h"
#include "hollywood.h"
#include "start.h"
#include "gpio.h"
#define gpio_delay() udelay(100)
@ -11,13 +12,13 @@ void send_bits(int b, int bits)
while(bits--)
{
if(b & (1 << bits))
set32(HW_GPIO1OUT, 0x1000);
set32(HW_GPIO1OUT, GP_EEP_MOSI);
else
clear32(HW_GPIO1OUT, 0x1000);
clear32(HW_GPIO1OUT, GP_EEP_MOSI);
gpio_delay();
set32(HW_GPIO1OUT, 0x800);
set32(HW_GPIO1OUT, GP_EEP_CLK);
gpio_delay();
clear32(HW_GPIO1OUT, 0x800);
clear32(HW_GPIO1OUT, GP_EEP_CLK);
gpio_delay();
}
}
@ -28,11 +29,11 @@ int recv_bits(int bits)
while(bits--)
{
res <<= 1;
set32(HW_GPIO1OUT, 0x800);
set32(HW_GPIO1OUT, GP_EEP_CLK);
gpio_delay();
clear32(HW_GPIO1OUT, 0x800);
clear32(HW_GPIO1OUT, GP_EEP_CLK);
gpio_delay();
res |= !!(read32(HW_GPIO1IN) & 0x2000);
res |= !!(read32(HW_GPIO1IN) & GP_EEP_MISO);
}
return res;
}
@ -46,17 +47,17 @@ int seeprom_read(void *dst, int offset, int size)
if(size & 1)
return -1;
clear32(HW_GPIO1OUT, 0x800);
clear32(HW_GPIO1OUT, 0x400);
clear32(HW_GPIO1OUT, GP_EEP_CLK);
clear32(HW_GPIO1OUT, GP_EEP_CS);
gpio_delay();
for(i = 0; i < size; ++i)
{
set32(HW_GPIO1OUT, 0x400);
set32(HW_GPIO1OUT, GP_EEP_CS);
send_bits((0x600 | (offset + i)), 11);
recv = recv_bits(16);
*ptr++ = recv;
clear32(HW_GPIO1OUT, 0x400);
clear32(HW_GPIO1OUT, GP_EEP_CS);
gpio_delay();
}