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-rw-r--r--drivers/media/common/tuners/mt2063.c137
1 files changed, 43 insertions, 94 deletions
diff --git a/drivers/media/common/tuners/mt2063.c b/drivers/media/common/tuners/mt2063.c
index a43a859cf063..3c0b3f1ec248 100644
--- a/drivers/media/common/tuners/mt2063.c
+++ b/drivers/media/common/tuners/mt2063.c
@@ -8,13 +8,7 @@
static unsigned int verbose;
module_param(verbose, int, 0644);
-/* Internal structures and types */
-
-/* FIXME: Those two error codes need conversion*/
-/* Error: Upconverter PLL is not locked */
-#define MT2063_UPC_UNLOCK (0x80000002)
-/* Error: Downconverter PLL is not locked */
-#define MT2063_DNC_UNLOCK (0x80000004)
+/* positive error codes used internally */
/* Info: Unavoidable LO-related spur may be present in the output */
#define MT2063_SPUR_PRESENT_ERR (0x00800000)
@@ -30,10 +24,6 @@ module_param(verbose, int, 0644);
#define MT2063_DNC_RANGE (0x08000000)
/*
- * Data Types
- */
-
-/*
* Constant defining the version of the following structure
* and therefore the API for this code.
*
@@ -362,29 +352,6 @@ unsigned int mt2063_setTune(struct dvb_frontend *fe, u32 f_in,
return err;
}
-unsigned int mt2063_lockStatus(struct dvb_frontend *fe)
-{
- struct dvb_frontend_ops *frontend_ops = &fe->ops;
- struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
- struct tuner_state t_state;
- int err = 0;
-
- if (&fe->ops)
- frontend_ops = &fe->ops;
- if (&frontend_ops->tuner_ops)
- tuner_ops = &frontend_ops->tuner_ops;
- if (tuner_ops->get_state) {
- if ((err =
- tuner_ops->get_state(fe, DVBFE_TUNER_REFCLOCK,
- &t_state)) < 0) {
- printk("%s: Invalid parameter\n", __func__);
- return err;
- }
- }
- return err;
-}
-
-
unsigned int tuner_MT2063_SoftwareShutdown(struct dvb_frontend *fe)
{
struct mt2063_state *state = fe->tuner_priv;
@@ -1193,39 +1160,21 @@ static u32 MT2063_CalcLO2Mult(u32 * Div, u32 * FracN, u32 f_LO,
static u32 MT2063_fLO_FractionalTerm(u32 f_ref, u32 num,
u32 denom);
-/****************************************************************************
-**
-** Name: MT2063_GetLocked
-**
-** Description: Checks to see if LO1 and LO2 are locked.
-**
-** Parameters: h - Open handle to the tuner (from MT2063_Open).
-**
-** Returns: status:
-** MT_OK - No errors
-** MT_UPC_UNLOCK - Upconverter PLL unlocked
-** MT_DNC_UNLOCK - Downconverter PLL unlocked
-** MT_COMM_ERR - Serial bus communications error
-** MT_INV_HANDLE - Invalid tuner handle
-**
-** Dependencies: MT_ReadSub - Read byte(s) of data from the serial bus
-** MT_Sleep - Delay execution for x milliseconds
-**
-** Revision History:
-**
-** SCR Date Author Description
-** -------------------------------------------------------------------------
-** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b.
-**
-****************************************************************************/
-static u32 MT2063_GetLocked(struct mt2063_state *state)
+/**
+ * mt2063_lockStatus - Checks to see if LO1 and LO2 are locked
+ *
+ * @state: struct mt2063_state pointer
+ *
+ * This function returns 0, if no lock, 1 if locked and a value < 1 if error
+ */
+unsigned int mt2063_lockStatus(struct mt2063_state *state)
{
const u32 nMaxWait = 100; /* wait a maximum of 100 msec */
const u32 nPollRate = 2; /* poll status bits every 2 ms */
const u32 nMaxLoops = nMaxWait / nPollRate;
const u8 LO1LK = 0x80;
u8 LO2LK = 0x08;
- u32 status = 0; /* Status to be returned */
+ u32 status;
u32 nDelays = 0;
/* LO2 Lock bit was in a different place for B0 version */
@@ -1233,28 +1182,24 @@ static u32 MT2063_GetLocked(struct mt2063_state *state)
LO2LK = 0x40;
do {
- status |=
- mt2063_read(state,
- MT2063_REG_LO_STATUS,
- &state->reg[MT2063_REG_LO_STATUS], 1);
+ status = mt2063_read(state, MT2063_REG_LO_STATUS,
+ &state->reg[MT2063_REG_LO_STATUS], 1);
if (status < 0)
- return (status);
+ return status;
if ((state->reg[MT2063_REG_LO_STATUS] & (LO1LK | LO2LK)) ==
(LO1LK | LO2LK)) {
- return (status);
+ return TUNER_STATUS_LOCKED | TUNER_STATUS_STEREO;
}
msleep(nPollRate); /* Wait between retries */
}
while (++nDelays < nMaxLoops);
- if ((state->reg[MT2063_REG_LO_STATUS] & LO1LK) == 0x00)
- status |= MT2063_UPC_UNLOCK;
- if ((state->reg[MT2063_REG_LO_STATUS] & LO2LK) == 0x00)
- status |= MT2063_DNC_UNLOCK;
-
- return (status);
+ /*
+ * Got no lock or partial lock
+ */
+ return 0;
}
/****************************************************************************
@@ -2424,15 +2369,14 @@ static u32 MT2063_ClearPowerMaskBits(struct mt2063_state *state, enum MT2063_Mas
****************************************************************************/
static u32 MT2063_SoftwareShutdown(struct mt2063_state *state, u8 Shutdown)
{
- u32 status = 0; /* Status to be returned */
+ u32 status; /* Status to be returned */
if (Shutdown == 1)
state->reg[MT2063_REG_PWR_1] |= 0x04; /* Turn the bit on */
else
state->reg[MT2063_REG_PWR_1] &= ~0x04; /* Turn off the bit */
- status |=
- mt2063_write(state,
+ status = mt2063_write(state,
MT2063_REG_PWR_1,
&state->reg[MT2063_REG_PWR_1], 1);
@@ -2453,7 +2397,7 @@ static u32 MT2063_SoftwareShutdown(struct mt2063_state *state, u8 Shutdown)
1);
}
- return (status);
+ return status;
}
/****************************************************************************
@@ -2486,17 +2430,18 @@ static u32 MT2063_SoftwareShutdown(struct mt2063_state *state, u8 Shutdown)
****************************************************************************/
static u32 MT2063_SetReg(struct mt2063_state *state, u8 reg, u8 val)
{
- u32 status = 0; /* Status to be returned */
+ u32 status;
if (reg >= MT2063_REG_END_REGS)
- status |= -ERANGE;
+ return -ERANGE;
- status = mt2063_write(state, reg, &val,
- 1);
- if (status >= 0)
- state->reg[reg] = val;
+ status = mt2063_write(state, reg, &val, 1);
+ if (status < 0)
+ return status;
- return (status);
+ state->reg[reg] = val;
+
+ return 0;
}
static u32 MT2063_Round_fLO(u32 f_LO, u32 f_LO_Step, u32 f_ref)
@@ -2670,7 +2615,7 @@ static u32 FindClearTuneFilter(struct mt2063_state *state, u32 f_in)
break;
}
}
- return (RFBand);
+ return RFBand;
}
/****************************************************************************
@@ -2899,18 +2844,22 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in)
** Check for LO's locking
*/
- if (status >= 0) {
- status |= MT2063_GetLocked(state);
- }
+ if (status < 0)
+ return status;
+
+ status = mt2063_lockStatus(state);
+ if (status < 0)
+ return status;
+ if (!status)
+ return -EINVAL; /* Couldn't lock */
+
/*
- ** If we locked OK, assign calculated data to mt2063_state structure
+ * If we locked OK, assign calculated data to mt2063_state structure
*/
- if (status >= 0) {
- state->f_IF1_actual = state->AS_Data.f_LO1 - f_in;
- }
+ state->f_IF1_actual = state->AS_Data.f_LO1 - f_in;
}
- return (status);
+ return status;
}
static u32 MT_Tune_atv(void *h, u32 f_in, u32 bw_in,
@@ -3321,7 +3270,7 @@ static int mt2063_get_state(struct dvb_frontend *fe,
//get bandwidth
break;
case DVBFE_TUNER_REFCLOCK:
- tunstate->refclock = (u32) MT2063_GetLocked(state);
+ tunstate->refclock = mt2063_lockStatus(state);
break;
default:
break;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 08:26:09 +0100