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drm/nouveau: implement init table opcodex 0x5e and 0x9a

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
This commit is contained in:
Marcin Kościelnicki 2010-07-04 02:47:16 +00:00 committed by Ben Skeggs
parent e3a1924f3e
commit b715d64028
1 changed files with 123 additions and 0 deletions
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123
drivers/gpu/drm/nouveau/nouveau_bios.c
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@ -2019,6 +2019,64 @@ init_sub_direct(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
return 3;
}
static int
init_i2c_if(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
{
/*
* INIT_I2C_IF opcode: 0x5E ('^')
*
* offset (8 bit): opcode
* offset + 1 (8 bit): DCB I2C table entry index
* offset + 2 (8 bit): I2C slave address
* offset + 3 (8 bit): I2C register
* offset + 4 (8 bit): mask
* offset + 5 (8 bit): data
*
* Read the register given by "I2C register" on the device addressed
* by "I2C slave address" on the I2C bus given by "DCB I2C table
* entry index". Compare the result AND "mask" to "data".
* If they're not equal, skip subsequent opcodes until condition is
* inverted (INIT_NOT), or we hit INIT_RESUME
*/
uint8_t i2c_index = bios->data[offset + 1];
uint8_t i2c_address = bios->data[offset + 2] >> 1;
uint8_t reg = bios->data[offset + 3];
uint8_t mask = bios->data[offset + 4];
uint8_t data = bios->data[offset + 5];
struct nouveau_i2c_chan *chan;
union i2c_smbus_data val;
int ret;
/* no execute check by design */
BIOSLOG(bios, "0x%04X: DCBI2CIndex: 0x%02X, I2CAddress: 0x%02X\n",
offset, i2c_index, i2c_address);
chan = init_i2c_device_find(bios->dev, i2c_index);
if (!chan)
return -ENODEV;
ret = i2c_smbus_xfer(&chan->adapter, i2c_address, 0,
I2C_SMBUS_READ, reg,
I2C_SMBUS_BYTE_DATA, &val);
if (ret < 0) {
BIOSLOG(bios, "0x%04X: I2CReg: 0x%02X, Value: [no device], "
"Mask: 0x%02X, Data: 0x%02X\n",
offset, reg, mask, data);
iexec->execute = 0;
return 6;
}
BIOSLOG(bios, "0x%04X: I2CReg: 0x%02X, Value: 0x%02X, "
"Mask: 0x%02X, Data: 0x%02X\n",
offset, reg, val.byte, mask, data);
iexec->execute = ((val.byte & mask) == data);
return 6;
}
static int
init_copy_nv_reg(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
{
@ -3517,6 +3575,69 @@ init_zm_auxch(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
return len;
}
static int
init_i2c_long_if(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
{
/*
* INIT_I2C_LONG_IF opcode: 0x9A ('')
*
* offset (8 bit): opcode
* offset + 1 (8 bit): DCB I2C table entry index
* offset + 2 (8 bit): I2C slave address
* offset + 3 (16 bit): I2C register
* offset + 5 (8 bit): mask
* offset + 6 (8 bit): data
*
* Read the register given by "I2C register" on the device addressed
* by "I2C slave address" on the I2C bus given by "DCB I2C table
* entry index". Compare the result AND "mask" to "data".
* If they're not equal, skip subsequent opcodes until condition is
* inverted (INIT_NOT), or we hit INIT_RESUME
*/
uint8_t i2c_index = bios->data[offset + 1];
uint8_t i2c_address = bios->data[offset + 2] >> 1;
uint8_t reglo = bios->data[offset + 3];
uint8_t reghi = bios->data[offset + 4];
uint8_t mask = bios->data[offset + 5];
uint8_t data = bios->data[offset + 6];
struct nouveau_i2c_chan *chan;
uint8_t buf0[2] = { reghi, reglo };
uint8_t buf1[1];
struct i2c_msg msg[2] = {
{ i2c_address, 0, 1, buf0 },
{ i2c_address, I2C_M_RD, 1, buf1 },
};
int ret;
/* no execute check by design */
BIOSLOG(bios, "0x%04X: DCBI2CIndex: 0x%02X, I2CAddress: 0x%02X\n",
offset, i2c_index, i2c_address);
chan = init_i2c_device_find(bios->dev, i2c_index);
if (!chan)
return -ENODEV;
ret = i2c_transfer(&chan->adapter, msg, 2);
if (ret < 0) {
BIOSLOG(bios, "0x%04X: I2CReg: 0x%02X:0x%02X, Value: [no device], "
"Mask: 0x%02X, Data: 0x%02X\n",
offset, reghi, reglo, mask, data);
iexec->execute = 0;
return 7;
}
BIOSLOG(bios, "0x%04X: I2CReg: 0x%02X:0x%02X, Value: 0x%02X, "
"Mask: 0x%02X, Data: 0x%02X\n",
offset, reghi, reglo, buf1[0], mask, data);
iexec->execute = ((buf1[0] & mask) == data);
return 7;
}
static struct init_tbl_entry itbl_entry[] = {
/* command name , id , length , offset , mult , command handler */
/* INIT_PROG (0x31, 15, 10, 4) removed due to no example of use */
@ -3547,6 +3668,7 @@ static struct init_tbl_entry itbl_entry[] = {
{ "INIT_ZM_REG_SEQUENCE" , 0x58, init_zm_reg_sequence },
/* INIT_INDIRECT_REG (0x5A, 7, 0, 0) removed due to no example of use */
{ "INIT_SUB_DIRECT" , 0x5B, init_sub_direct },
{ "INIT_I2C_IF" , 0x5E, init_i2c_if },
{ "INIT_COPY_NV_REG" , 0x5F, init_copy_nv_reg },
{ "INIT_ZM_INDEX_IO" , 0x62, init_zm_index_io },
{ "INIT_COMPUTE_MEM" , 0x63, init_compute_mem },
@ -3580,6 +3702,7 @@ static struct init_tbl_entry itbl_entry[] = {
{ "INIT_97" , 0x97, init_97 },
{ "INIT_AUXCH" , 0x98, init_auxch },
{ "INIT_ZM_AUXCH" , 0x99, init_zm_auxch },
{ "INIT_I2C_LONG_IF" , 0x9A, init_i2c_long_if },
{ NULL , 0 , NULL }
};