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[media] mt2063: Rewrite read/write logic at the driver 

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-07-21 02:46:49 -03:00
parent d0dcc2da26
commit e1de3d18d4
1 changed files with 73 additions and 189 deletions
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262
drivers/media/common/tuners/mt2063.c
View File

@ -1,4 +1,3 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
@ -541,15 +540,15 @@ unsigned int tuner_MT2063_ClearPowerMaskBits(struct dvb_frontend *fe)
return err;
}
/*****************/
//i2c operation
static int mt2063_writeregs(struct mt2063_state *state, u8 reg1,
u8 *data, int len)
/*
* mt2063_write - Write data into the I2C bus
*/
static u32 mt2063_write(struct mt2063_state *state,
u8 reg, u8 *data, u32 len)
{
struct dvb_frontend *fe = state->frontend;
int ret;
u8 buf[60]; /* = { reg1, data }; */
u8 buf[60];
struct i2c_msg msg = {
.addr = state->config->tuner_address,
.flags = 0,
@ -557,11 +556,12 @@ static int mt2063_writeregs(struct mt2063_state *state, u8 reg1,
.len = len + 1
};
msg.buf[0] = reg1;
msg.buf[0] = reg;
memcpy(msg.buf + 1, data, len);
//printk("mt2063_writeregs state->i2c=%p\n", state->i2c);
fe->ops.i2c_gate_ctrl(fe, 1);
ret = i2c_transfer(state->i2c, &msg, 1);
fe->ops.i2c_gate_ctrl(fe, 0);
if (ret < 0)
printk("mt2063_writeregs error ret=%d\n", ret);
@ -569,156 +569,40 @@ static int mt2063_writeregs(struct mt2063_state *state, u8 reg1,
return ret;
}
static int mt2063_read_regs(struct mt2063_state *state, u8 reg1, u8 * b, u8 len)
{
int ret;
u8 b0[] = { reg1 };
struct i2c_msg msg[] = {
{
.addr = state->config->tuner_address,
.flags = I2C_M_RD,
.buf = b0,
.len = 1}, {
.addr = state->config->tuner_address,
.flags = I2C_M_RD,
.buf = b,
.len = len}
};
//printk("mt2063_read_regs state->i2c=%p\n", state->i2c);
ret = i2c_transfer(state->i2c, msg, 2);
if (ret < 0)
printk("mt2063_readregs error ret=%d\n", ret);
return ret;
}
//context of mt2063_userdef.c <Henry> ======================================
//#################################################################
//=================================================================
/*****************************************************************************
**
** Name: MT_WriteSub
**
** Description: Write values to device using a two-wire serial bus.
**
** Parameters: hUserData - User-specific I/O parameter that was
** passed to tuner's Open function.
** addr - device serial bus address (value passed
** as parameter to MTxxxx_Open)
** subAddress - serial bus sub-address (Register Address)
** pData - pointer to the Data to be written to the
** device
** cnt - number of bytes/registers to be written
**
** Returns: status:
** MT_OK - No errors
** MT_COMM_ERR - Serial bus communications error
** user-defined
**
** Notes: This is a callback function that is called from the
** the tuning algorithm. You MUST provide code for this
** function to write data using the tuner's 2-wire serial
** bus.
**
** The hUserData parameter is a user-specific argument.
** If additional arguments are needed for the user's
** serial bus read/write functions, this argument can be
** used to supply the necessary information.
** The hUserData parameter is initialized in the tuner's Open
** function.
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 03-25-2004 DAD Original
**
*****************************************************************************/
static u32 MT2063_WriteSub(struct mt2063_state *state,
u8 subAddress, u8 *pData, u32 cnt)
{
u32 status = 0; /* Status to be returned */
struct dvb_frontend *fe = state->frontend;
/*
** ToDo: Add code here to implement a serial-bus write
** operation to the MTxxxx tuner. If successful,
** return MT_OK.
*/
fe->ops.i2c_gate_ctrl(fe, 1); //I2C bypass drxk3926 close i2c bridge
if (mt2063_writeregs(state, subAddress, pData, cnt) < 0) {
status = -EINVAL;
}
fe->ops.i2c_gate_ctrl(fe, 0); //I2C bypass drxk3926 close i2c bridge
return (status);
}
/*****************************************************************************
**
** Name: MT_ReadSub
**
** Description: Read values from device using a two-wire serial bus.
**
** Parameters: hUserData - User-specific I/O parameter that was
** passed to tuner's Open function.
** addr - device serial bus address (value passed
** as parameter to MTxxxx_Open)
** subAddress - serial bus sub-address (Register Address)
** pData - pointer to the Data to be written to the
** device
** cnt - number of bytes/registers to be written
**
** Returns: status:
** MT_OK - No errors
** MT_COMM_ERR - Serial bus communications error
** user-defined
**
** Notes: This is a callback function that is called from the
** the tuning algorithm. You MUST provide code for this
** function to read data using the tuner's 2-wire serial
** bus.
**
** The hUserData parameter is a user-specific argument.
** If additional arguments are needed for the user's
** serial bus read/write functions, this argument can be
** used to supply the necessary information.
** The hUserData parameter is initialized in the tuner's Open
** function.
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 03-25-2004 DAD Original
**
*****************************************************************************/
static u32 MT2063_ReadSub(struct mt2063_state *state,
/*
* mt2063_read - Read data from the I2C bus
*/
static u32 mt2063_read(struct mt2063_state *state,
u8 subAddress, u8 *pData, u32 cnt)
{
u32 status = 0; /* Status to be returned */
struct dvb_frontend *fe = state->frontend;
u32 i = 0;
/*
** ToDo: Add code here to implement a serial-bus read
** operation to the MTxxxx tuner. If successful,
** return MT_OK.
*/
fe->ops.i2c_gate_ctrl(fe, 1); //I2C bypass drxk3926 close i2c bridge
fe->ops.i2c_gate_ctrl(fe, 1);
for (i = 0; i < cnt; i++) {
if (mt2063_read_regs(state, subAddress + i, pData + i, 1) < 0) {
status = -EINVAL;
int ret;
u8 b0[] = { subAddress + i };
struct i2c_msg msg[] = {
{
.addr = state->config->tuner_address,
.flags = I2C_M_RD,
.buf = b0,
.len = 1
}, {
.addr = state->config->tuner_address,
.flags = I2C_M_RD,
.buf = pData + 1,
.len = 1
}
};
ret = i2c_transfer(state->i2c, msg, 2);
if (ret < 0)
break;
}
}
fe->ops.i2c_gate_ctrl(fe, 0); //I2C bypass drxk3926 close i2c bridge
fe->ops.i2c_gate_ctrl(fe, 0);
return (status);
}
@ -1670,7 +1554,7 @@ static u32 MT2063_GetLocked(struct mt2063_state *state)
do {
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_LO_STATUS,
&state->reg[MT2063_REG_LO_STATUS], 1);
@ -1830,7 +1714,7 @@ static u32 MT2063_GetParam(struct mt2063_state *state, enum MT2063_Param param,
{
/* read the actual tuner register values for LO1C_1 and LO1C_2 */
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_LO1C_1,
&state->
reg[MT2063_REG_LO1C_1], 2);
@ -1884,7 +1768,7 @@ static u32 MT2063_GetParam(struct mt2063_state *state, enum MT2063_Param param,
{
/* Read the actual tuner register values for LO2C_1, LO2C_2 and LO2C_3 */
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_LO2C_1,
&state->
reg[MT2063_REG_LO2C_1], 3);
@ -1983,7 +1867,7 @@ static u32 MT2063_GetParam(struct mt2063_state *state, enum MT2063_Param param,
/* Initiate ADC output to reg 0x0A */
if (reg != orig)
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_BYP_CTRL,
&reg, 1);
@ -1992,7 +1876,7 @@ static u32 MT2063_GetParam(struct mt2063_state *state, enum MT2063_Param param,
for (i = 0; i < 8; i++) {
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_ADC_OUT,
&state->
reg
@ -2015,7 +1899,7 @@ static u32 MT2063_GetParam(struct mt2063_state *state, enum MT2063_Param param,
/* Restore value of Register BYP_CTRL */
if (reg != orig)
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_BYP_CTRL,
&orig, 1);
}
@ -2185,7 +2069,7 @@ static u32 MT2063_GetReg(struct mt2063_state *state, u8 reg, u8 * val)
if (reg >= MT2063_REG_END_REGS)
return -ERANGE;
status = MT2063_ReadSub(state, reg, &state->reg[reg], 1);
status = mt2063_read(state, reg, &state->reg[reg], 1);
return (status);
}
@ -2490,7 +2374,7 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
};
/* Read the Part/Rev code from the tuner */
status = MT2063_ReadSub(state, MT2063_REG_PART_REV, state->reg, 1);
status = mt2063_read(state, MT2063_REG_PART_REV, state->reg, 1);
if (status < 0)
return status;
@ -2501,7 +2385,7 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
return -ENODEV; /* Wrong tuner Part/Rev code */
/* Check the 2nd byte of the Part/Rev code from the tuner */
status = MT2063_ReadSub(state,
status = mt2063_read(state,
MT2063_REG_RSVD_3B,
&state->reg[MT2063_REG_RSVD_3B], 1);
@ -2510,7 +2394,7 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
return -ENODEV; /* Wrong tuner Part/Rev code */
/* Reset the tuner */
status = MT2063_WriteSub(state, MT2063_REG_LO2CQ_3, &all_resets, 1);
status = mt2063_write(state, MT2063_REG_LO2CQ_3, &all_resets, 1);
if (status < 0)
return status;
@ -2537,7 +2421,7 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
while (status >= 0 && *def) {
u8 reg = *def++;
u8 val = *def++;
status = MT2063_WriteSub(state, reg, &val, 1);
status = mt2063_write(state, reg, &val, 1);
}
if (status < 0)
return status;
@ -2547,7 +2431,7 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
maxReads = 10;
while (status >= 0 && (FCRUN != 0) && (maxReads-- > 0)) {
msleep(2);
status = MT2063_ReadSub(state,
status = mt2063_read(state,
MT2063_REG_XO_STATUS,
&state->
reg[MT2063_REG_XO_STATUS], 1);
@ -2557,14 +2441,14 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
if (FCRUN != 0)
return -ENODEV;
status = MT2063_ReadSub(state,
status = mt2063_read(state,
MT2063_REG_FIFFC,
&state->reg[MT2063_REG_FIFFC], 1);
if (status < 0)
return status;
/* Read back all the registers from the tuner */
status = MT2063_ReadSub(state,
status = mt2063_read(state,
MT2063_REG_PART_REV,
state->reg, MT2063_REG_END_REGS);
if (status < 0)
@ -2633,13 +2517,13 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
*/
state->reg[MT2063_REG_CTUNE_CTRL] = 0x0A;
status = MT2063_WriteSub(state,
status = mt2063_write(state,
MT2063_REG_CTUNE_CTRL,
&state->reg[MT2063_REG_CTUNE_CTRL], 1);
if (status < 0)
return status;
/* Read the ClearTune filter calibration value */
status = MT2063_ReadSub(state,
status = mt2063_read(state,
MT2063_REG_FIFFC,
&state->reg[MT2063_REG_FIFFC], 1);
if (status < 0)
@ -2648,7 +2532,7 @@ static u32 MT2063_ReInit(struct mt2063_state *state)
fcu_osc = state->reg[MT2063_REG_FIFFC];
state->reg[MT2063_REG_CTUNE_CTRL] = 0x00;
status = MT2063_WriteSub(state,
status = mt2063_write(state,
MT2063_REG_CTUNE_CTRL,
&state->reg[MT2063_REG_CTUNE_CTRL], 1);
if (status < 0)
@ -2781,11 +2665,11 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
/* Buffer the queue for restoration later and get actual LO2 values. */
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_LO2CQ_1,
&(tempLO2CQ[0]), 3);
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_LO2C_1,
&(tempLO2C[0]), 3);
@ -2799,7 +2683,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
(tempLO2CQ[2] != tempLO2C[2])) {
/* put actual LO2 value into queue (with 0 in one-shot bits) */
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO2CQ_1,
&(tempLO2C[0]), 3);
@ -2826,7 +2710,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
state->reg[MT2063_REG_LO1CQ_2] =
(u8) (FracN);
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO1CQ_1,
&state->
reg[MT2063_REG_LO1CQ_1], 2);
@ -2834,7 +2718,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
/* set the one-shot bit to load the pair of LO values */
tmpOneShot = tempLO2CQ[2] | 0xE0;
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO2CQ_3,
&tmpOneShot, 1);
@ -2842,7 +2726,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
if (restore) {
/* put actual LO2 value into queue (0 in one-shot bits) */
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO2CQ_1,
&(tempLO2CQ[0]), 3);
@ -2895,11 +2779,11 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
/* Buffer the queue for restoration later and get actual LO2 values. */
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_LO1CQ_1,
&(tempLO1CQ[0]), 2);
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_LO1C_1,
&(tempLO1C[0]), 2);
@ -2908,7 +2792,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
|| (tempLO1CQ[1] != tempLO1C[1])) {
/* put actual LO1 value into queue */
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO1CQ_1,
&(tempLO1C[0]), 2);
@ -2934,7 +2818,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
state->reg[MT2063_REG_LO2CQ_3] =
(u8) ((FracN2 & 0x0F));
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO1CQ_1,
&state->
reg[MT2063_REG_LO1CQ_1], 3);
@ -2943,7 +2827,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
tmpOneShot =
state->reg[MT2063_REG_LO2CQ_3] | 0xE0;
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO2CQ_3,
&tmpOneShot, 1);
@ -2951,7 +2835,7 @@ static u32 MT2063_SetParam(struct mt2063_state *state,
if (restore) {
/* put previous LO1 queue value back into queue */
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_LO1CQ_1,
&(tempLO1CQ[0]), 2);
@ -3355,14 +3239,14 @@ static u32 MT2063_ClearPowerMaskBits(struct mt2063_state *state, enum MT2063_Mas
if ((Bits & 0xFF00) != 0) {
state->reg[MT2063_REG_PWR_2] &= ~(u8) (Bits >> 8);
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_PWR_2,
&state->reg[MT2063_REG_PWR_2], 1);
}
if ((Bits & 0xFF) != 0) {
state->reg[MT2063_REG_PWR_1] &= ~(u8) (Bits & 0xFF);
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_PWR_1,
&state->reg[MT2063_REG_PWR_1], 1);
}
@ -3408,7 +3292,7 @@ static u32 MT2063_SoftwareShutdown(struct mt2063_state *state, u8 Shutdown)
state->reg[MT2063_REG_PWR_1] &= ~0x04; /* Turn off the bit */
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_PWR_1,
&state->reg[MT2063_REG_PWR_1], 1);
@ -3416,14 +3300,14 @@ static u32 MT2063_SoftwareShutdown(struct mt2063_state *state, u8 Shutdown)
state->reg[MT2063_REG_BYP_CTRL] =
(state->reg[MT2063_REG_BYP_CTRL] & 0x9F) | 0x40;
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_BYP_CTRL,
&state->reg[MT2063_REG_BYP_CTRL],
1);
state->reg[MT2063_REG_BYP_CTRL] =
(state->reg[MT2063_REG_BYP_CTRL] & 0x9F);
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_BYP_CTRL,
&state->reg[MT2063_REG_BYP_CTRL],
1);
@ -3467,7 +3351,7 @@ static u32 MT2063_SetReg(struct mt2063_state *state, u8 reg, u8 val)
if (reg >= MT2063_REG_END_REGS)
status |= -ERANGE;
status = MT2063_WriteSub(state, reg, &val,
status = mt2063_write(state, reg, &val,
1);
if (status >= 0)
state->reg[reg] = val;
@ -3749,7 +3633,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in)
*/
if (status >= 0) {
status |=
MT2063_ReadSub(state,
mt2063_read(state,
MT2063_REG_FIFFC,
&state->reg[MT2063_REG_FIFFC], 1);
fiffc = state->reg[MT2063_REG_FIFFC];
@ -3852,10 +3736,10 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in)
** IMPORTANT: There is a required order for writing
** (0x05 must follow all the others).
*/
status |= MT2063_WriteSub(state, MT2063_REG_LO1CQ_1, &state->reg[MT2063_REG_LO1CQ_1], 5); /* 0x01 - 0x05 */
status |= mt2063_write(state, MT2063_REG_LO1CQ_1, &state->reg[MT2063_REG_LO1CQ_1], 5); /* 0x01 - 0x05 */
if (state->tuner_id == MT2063_B0) {
/* Re-write the one-shot bits to trigger the tune operation */
status |= MT2063_WriteSub(state, MT2063_REG_LO2CQ_3, &state->reg[MT2063_REG_LO2CQ_3], 1); /* 0x05 */
status |= mt2063_write(state, MT2063_REG_LO2CQ_3, &state->reg[MT2063_REG_LO2CQ_3], 1); /* 0x05 */
}
/* Write out the FIFF offset only if it's changing */
if (state->reg[MT2063_REG_FIFF_OFFSET] !=
@ -3863,7 +3747,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in)
state->reg[MT2063_REG_FIFF_OFFSET] =
(u8) fiffof;
status |=
MT2063_WriteSub(state,
mt2063_write(state,
MT2063_REG_FIFF_OFFSET,
&state->
reg[MT2063_REG_FIFF_OFFSET],