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i2c: Update drivers

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Adds support for 8 byte transfers needed by touch driver changes.
This commit is contained in:
CTCaer 2020-03-13 10:25:27 +02:00
parent 9697067466
commit 144d6fd3f6
4 changed files with 44 additions and 9 deletions
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7
bootloader/soc/i2c.c
View file

@ -19,7 +19,7 @@
#include "i2c.h"
#include "../utils/util.h"
static u32 i2c_addrs[] = {
static const u32 i2c_addrs[] = {
0x7000C000, 0x7000C400, 0x7000C500,
0x7000C700, 0x7000D000, 0x7000D100
};
@ -121,6 +121,11 @@ int i2c_send_buf_small(u32 idx, u32 x, u32 y, u8 *buf, u32 size)
return _i2c_send_pkt(idx, x, tmp, size + 1);
}
int i2c_recv_buf(u8 *buf, u32 size, u32 idx, u32 x)
{
return _i2c_recv_pkt(idx, buf, size, x);
}
int i2c_recv_buf_small(u8 *buf, u32 size, u32 idx, u32 x, u32 y)
{
int res = _i2c_send_pkt(idx, x, (u8 *)&y, 1);

1
bootloader/soc/i2c.h
View file

@ -39,6 +39,7 @@
void i2c_init(u32 idx);
int i2c_send_buf_small(u32 idx, u32 x, u32 y, u8 *buf, u32 size);
int i2c_recv_buf(u8 *buf, u32 size, u32 idx, u32 x);
int i2c_recv_buf_small(u8 *buf, u32 size, u32 idx, u32 x, u32 y);
int i2c_send_byte(u32 idx, u32 x, u32 y, u8 b);
u8 i2c_recv_byte(u32 idx, u32 x, u32 y);

40
nyx/nyx_gui/soc/i2c.c
View file

@ -19,7 +19,7 @@
#include "i2c.h"
#include "../utils/util.h"
static u32 i2c_addrs[] = {
static const u32 i2c_addrs[] = {
0x7000C000, 0x7000C400, 0x7000C500,
0x7000C700, 0x7000D000, 0x7000D100
};
@ -37,21 +37,39 @@ static void _i2c_wait(vu32 *base)
static int _i2c_send_pkt(u32 idx, u32 x, u8 *buf, u32 size)
{
if (size > 4)
if (size > 8)
return 0;
u32 tmp = 0;
memcpy(&tmp, buf, size);
vu32 *base = (vu32 *)i2c_addrs[idx];
base[I2C_CMD_ADDR0] = x << 1; //Set x (send mode).
if (size > 4)
{
memcpy(&tmp, buf, 4);
base[I2C_CMD_DATA1] = tmp; //Set value.
tmp = 0;
memcpy(&tmp, buf + 4, size - 4);
base[I2C_CMD_DATA2] = tmp;
}
else
{
memcpy(&tmp, buf, size);
base[I2C_CMD_DATA1] = tmp; //Set value.
}
base[I2C_CNFG] = ((size - 1) << 1) | 0x2800; //Set size and send mode.
_i2c_wait(base); //Kick transaction.
base[I2C_CNFG] = (base[I2C_CNFG] & 0xFFFFFDFF) | 0x200;
u32 timeout = get_tmr_ms() + 1500;
while (base[I2C_STATUS] & 0x100)
;
{
if (get_tmr_ms() > timeout)
return 0;
}
if (base[I2C_STATUS] << 28)
return 0;
@ -70,8 +88,13 @@ static int _i2c_recv_pkt(u32 idx, u8 *buf, u32 size, u32 x)
_i2c_wait(base); // Kick transaction.
base[I2C_CNFG] = (base[I2C_CNFG] & 0xFFFFFDFF) | 0x200;
u32 timeout = get_tmr_ms() + 1500;
while (base[I2C_STATUS] & 0x100)
;
{
if (get_tmr_ms() > timeout)
return 0;
}
if (base[I2C_STATUS] << 28)
return 0;
@ -112,7 +135,7 @@ int i2c_send_buf_small(u32 idx, u32 x, u32 y, u8 *buf, u32 size)
{
u8 tmp[4];
if (size > 3)
if (size > 7)
return 0;
tmp[0] = y;
@ -121,6 +144,11 @@ int i2c_send_buf_small(u32 idx, u32 x, u32 y, u8 *buf, u32 size)
return _i2c_send_pkt(idx, x, tmp, size + 1);
}
int i2c_recv_buf(u8 *buf, u32 size, u32 idx, u32 x)
{
return _i2c_recv_pkt(idx, buf, size, x);
}
int i2c_recv_buf_small(u8 *buf, u32 size, u32 idx, u32 x, u32 y)
{
int res = _i2c_send_pkt(idx, x, (u8 *)&y, 1);

1
nyx/nyx_gui/soc/i2c.h
View file

@ -39,6 +39,7 @@
void i2c_init(u32 idx);
int i2c_send_buf_small(u32 idx, u32 x, u32 y, u8 *buf, u32 size);
int i2c_recv_buf(u8 *buf, u32 size, u32 idx, u32 x);
int i2c_recv_buf_small(u8 *buf, u32 size, u32 idx, u32 x, u32 y);
int i2c_send_byte(u32 idx, u32 x, u32 y, u8 b);
u8 i2c_recv_byte(u32 idx, u32 x, u32 y);