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Diffstat (limited to 'arch/powerpc/cpu/mpc8260/i2c.c')
-rw-r--r--arch/powerpc/cpu/mpc8260/i2c.c89
1 files changed, 40 insertions, 49 deletions
diff --git a/arch/powerpc/cpu/mpc8260/i2c.c b/arch/powerpc/cpu/mpc8260/i2c.c
index 4c99ee7..7382cba 100644
--- a/arch/powerpc/cpu/mpc8260/i2c.c
+++ b/arch/powerpc/cpu/mpc8260/i2c.c
@@ -31,9 +31,6 @@
#include <asm/cpm_8260.h>
#include <i2c.h>
-/* define to enable debug messages */
-#undef DEBUG_I2C
-
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_I2C_MULTI_BUS)
@@ -124,12 +121,6 @@ typedef struct I2C_BD {
#define BD_I2C_RX_ERR BD_SC_OV
-#ifdef DEBUG_I2C
-#define PRINTD(x) printf x
-#else
-#define PRINTD(x)
-#endif
-
/*
* Returns the best value of I2BRG to meet desired clock speed of I2C with
* input parameters (clock speed, filter, and predivider value).
@@ -142,18 +133,18 @@ i2c_roundrate(int hz, int speed, int filter, int modval,
{
int moddiv = 1 << (5 - (modval & 3)), brgdiv, div;
- PRINTD(("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
- hz, speed, filter, modval));
+ debug("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
+ hz, speed, filter, modval);
div = moddiv * speed;
brgdiv = (hz + div - 1) / div;
- PRINTD(("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv));
+ debug("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv);
*brgval = ((brgdiv + 1) / 2) - 3 - (2 * filter);
if ((*brgval < 0) || (*brgval > 255)) {
- PRINTD(("\t\trejected brgval=%d\n", *brgval));
+ debug("\t\trejected brgval=%d\n", *brgval);
return -1;
}
@@ -161,7 +152,7 @@ i2c_roundrate(int hz, int speed, int filter, int modval,
div = moddiv * brgdiv;
*totspeed = hz / div;
- PRINTD(("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed));
+ debug("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed);
return 0;
}
@@ -196,17 +187,17 @@ static int i2c_setrate(int hz, int speed)
}
}
- PRINTD(("[I2C] Best is:\n"));
- PRINTD(("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
+ debug("[I2C] Best is:\n");
+ debug("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
hz, speed, bestspeed_filter, bestspeed_modval, bestspeed_brgval,
- bestspeed_diff));
+ bestspeed_diff);
i2c->i2c_i2mod |= ((bestspeed_modval & 3) << 1) |
(bestspeed_filter << 3);
i2c->i2c_i2brg = bestspeed_brgval & 0xff;
- PRINTD(("[I2C] i2mod=%08x i2brg=%08x\n", i2c->i2c_i2mod,
- i2c->i2c_i2brg));
+ debug("[I2C] i2mod=%08x i2brg=%08x\n", i2c->i2c_i2mod,
+ i2c->i2c_i2brg);
return 1;
}
@@ -267,7 +258,7 @@ void i2c_init(int speed, int slaveadd)
* and current CPU rate (we assume sccr dfbgr field is 0;
* divide BRGCLK by 1)
*/
- PRINTD(("[I2C] Setting rate...\n"));
+ debug("[I2C] Setting rate...\n");
i2c_setrate(gd->brg_clk, CONFIG_SYS_I2C_SPEED);
/* Set I2C controller in master mode */
@@ -281,10 +272,10 @@ void i2c_init(int speed, int slaveadd)
txbd = (I2C_BD *)((unsigned char *) &immap->
im_dprambase[iip->iic_tbase]);
- PRINTD(("[I2C] rbase = %04x\n", iip->iic_rbase));
- PRINTD(("[I2C] tbase = %04x\n", iip->iic_tbase));
- PRINTD(("[I2C] rxbd = %08x\n", (int) rxbd));
- PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
+ debug("[I2C] rbase = %04x\n", iip->iic_rbase);
+ debug("[I2C] tbase = %04x\n", iip->iic_tbase);
+ debug("[I2C] rxbd = %08x\n", (int) rxbd);
+ debug("[I2C] txbd = %08x\n", (int) txbd);
/* Set big endian byte order */
iip->iic_tfcr = 0x10;
@@ -312,7 +303,7 @@ void i2c_newio(i2c_state_t *state)
volatile iic_t *iip;
uint dpaddr;
- PRINTD(("[I2C] i2c_newio\n"));
+ debug("[I2C] i2c_newio\n");
dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
iip = (iic_t *)&immap->im_dprambase[dpaddr];
@@ -325,9 +316,9 @@ void i2c_newio(i2c_state_t *state)
state->err_cb = NULL;
state->cb_data = NULL;
- PRINTD(("[I2C] rxbd = %08x\n", (int)state->rxbd));
- PRINTD(("[I2C] txbd = %08x\n", (int)state->txbd));
- PRINTD(("[I2C] tx_buf = %08x\n", (int)state->tx_buf));
+ debug("[I2C] rxbd = %08x\n", (int)state->rxbd);
+ debug("[I2C] txbd = %08x\n", (int)state->txbd);
+ debug("[I2C] tx_buf = %08x\n", (int)state->tx_buf);
/* clear the buffer memory */
memset((char *) state->tx_buf, 0, MAX_TX_SPACE);
@@ -342,8 +333,8 @@ int i2c_send(i2c_state_t *state,
volatile I2C_BD *txbd;
int i, j;
- PRINTD(("[I2C] i2c_send add=%02d sec=%02d flag=%02d size=%d\n",
- address, secondary_address, flags, size));
+ debug("[I2C] i2c_send add=%02d sec=%02d flag=%02d size=%d\n",
+ address, secondary_address, flags, size);
/* trying to send message larger than BD */
if (size > I2C_RXTX_LEN)
@@ -356,10 +347,10 @@ int i2c_send(i2c_state_t *state,
txbd = (I2C_BD *)state->txbd;
txbd->addr = state->tx_buf;
- PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
+ debug("[I2C] txbd = %08x\n", (int) txbd);
if (flags & I2CF_START_COND) {
- PRINTD(("[I2C] Formatting addresses...\n"));
+ debug("[I2C] Formatting addresses...\n");
if (flags & I2CF_ENABLE_SECONDARY) {
/* Length of message plus dest addresses */
txbd->length = size + 2;
@@ -386,12 +377,12 @@ int i2c_send(i2c_state_t *state,
txbd->status |= BD_SC_LAST | BD_SC_WRAP;
/* Copy data to send into buffer */
- PRINTD(("[I2C] copy data...\n"));
+ debug("[I2C] copy data...\n");
for (j = 0; j < size; i++, j++)
txbd->addr[i] = dataout[j];
- PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
- txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]));
+ debug("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]);
/* advance state */
state->tx_buf += txbd->length;
@@ -411,8 +402,8 @@ int i2c_receive(i2c_state_t *state,
{
volatile I2C_BD *rxbd, *txbd;
- PRINTD(("[I2C] i2c_receive %02d %02d %02d\n", address,
- secondary_address, flags));
+ debug("[I2C] i2c_receive %02d %02d %02d\n", address,
+ secondary_address, flags);
/* Expected to receive too much */
if (size_to_expect > I2C_RXTX_LEN)
@@ -426,8 +417,8 @@ int i2c_receive(i2c_state_t *state,
rxbd = (I2C_BD *) state->rxbd;
txbd = (I2C_BD *) state->txbd;
- PRINTD(("[I2C] rxbd = %08x\n", (int) rxbd));
- PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
+ debug("[I2C] rxbd = %08x\n", (int) rxbd);
+ debug("[I2C] txbd = %08x\n", (int) txbd);
txbd->addr = state->tx_buf;
@@ -455,10 +446,10 @@ int i2c_receive(i2c_state_t *state,
rxbd->status |= BD_SC_WRAP;
}
- PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
- txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]));
- PRINTD(("[I2C] rxbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
- rxbd->length, rxbd->status, rxbd->addr[0], rxbd->addr[1]));
+ debug("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]);
+ debug("[I2C] rxbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ rxbd->length, rxbd->status, rxbd->addr[0], rxbd->addr[1]);
/* advance state */
state->tx_buf += txbd->length;
@@ -482,10 +473,10 @@ int i2c_doio(i2c_state_t *state)
int n, i, b, rxcnt = 0, rxtimeo = 0, txcnt = 0, txtimeo = 0, rc = 0;
uint dpaddr;
- PRINTD(("[I2C] i2c_doio\n"));
+ debug("[I2C] i2c_doio\n");
if (state->tx_idx <= 0 && state->rx_idx <= 0) {
- PRINTD(("[I2C] No I/O is queued\n"));
+ debug("[I2C] No I/O is queued\n");
return I2CERR_QUEUE_EMPTY;
}
@@ -495,7 +486,7 @@ int i2c_doio(i2c_state_t *state)
iip->iic_tbptr = iip->iic_tbase;
/* Enable I2C */
- PRINTD(("[I2C] Enabling I2C...\n"));
+ debug("[I2C] Enabling I2C...\n");
i2c->i2c_i2mod |= 0x01;
/* Begin transmission */
@@ -515,8 +506,8 @@ int i2c_doio(i2c_state_t *state)
txbd--; /* wait until last in list is done */
- PRINTD(("[I2C] Transmitting...(txbd=0x%08lx)\n",
- (ulong) txbd));
+ debug("[I2C] Transmitting...(txbd=0x%08lx)\n",
+ (ulong) txbd);
udelay(START_DELAY_US); /* give it time to start */
while ((txbd->status & BD_SC_READY) && (++txcnt < txtimeo)) {
@@ -539,7 +530,7 @@ int i2c_doio(i2c_state_t *state)
rxbd--; /* wait until last in list is done */
- PRINTD(("[I2C] Receiving...(rxbd=0x%08lx)\n", (ulong) rxbd));
+ debug("[I2C] Receiving...(rxbd=0x%08lx)\n", (ulong) rxbd);
udelay(START_DELAY_US); /* give it time to start */
while ((rxbd->status & BD_SC_EMPTY) && (++rxcnt < rxtimeo)) {
generated by cgit v1.1 at 2024-12-26 05:47:00 +0000