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path: root/drivers/media/dvb/frontends/drx397xD.c
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Diffstat (limited to 'drivers/media/dvb/frontends/drx397xD.c')
-rw-r--r--drivers/media/dvb/frontends/drx397xD.c288
1 files changed, 147 insertions, 141 deletions
diff --git a/drivers/media/dvb/frontends/drx397xD.c b/drivers/media/dvb/frontends/drx397xD.c
index 3cbed874a6f..b9ca5c8d2dd 100644
--- a/drivers/media/dvb/frontends/drx397xD.c
+++ b/drivers/media/dvb/frontends/drx397xD.c
@@ -38,35 +38,32 @@ static const char mod_name[] = "drx397xD";
#define F_SET_0D0h 1
#define F_SET_0D4h 2
-typedef enum fw_ix {
+enum fw_ix {
#define _FW_ENTRY(a, b) b
#include "drx397xD_fw.h"
-} fw_ix_t;
+};
/* chip specifics */
struct drx397xD_state {
struct i2c_adapter *i2c;
struct dvb_frontend frontend;
struct drx397xD_config config;
- fw_ix_t chip_rev;
+ enum fw_ix chip_rev;
int flags;
u32 bandwidth_parm; /* internal bandwidth conversions */
u32 f_osc; /* w90: actual osc frequency [Hz] */
};
-/*******************************************************************************
- * Firmware
- ******************************************************************************/
-
+/* Firmware */
static const char *blob_name[] = {
#define _BLOB_ENTRY(a, b) a
#include "drx397xD_fw.h"
};
-typedef enum blob_ix {
+enum blob_ix {
#define _BLOB_ENTRY(a, b) b
#include "drx397xD_fw.h"
-} blob_ix_t;
+};
static struct {
const char *name;
@@ -85,7 +82,7 @@ static struct {
};
/* use only with writer lock aquired */
-static void _drx_release_fw(struct drx397xD_state *s, fw_ix_t ix)
+static void _drx_release_fw(struct drx397xD_state *s, enum fw_ix ix)
{
memset(&fw[ix].data[0], 0, sizeof(fw[0].data));
if (fw[ix].file)
@@ -94,9 +91,9 @@ static void _drx_release_fw(struct drx397xD_state *s, fw_ix_t ix)
static void drx_release_fw(struct drx397xD_state *s)
{
- fw_ix_t ix = s->chip_rev;
+ enum fw_ix ix = s->chip_rev;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
write_lock(&fw[ix].lock);
if (fw[ix].refcnt) {
@@ -107,13 +104,13 @@ static void drx_release_fw(struct drx397xD_state *s)
write_unlock(&fw[ix].lock);
}
-static int drx_load_fw(struct drx397xD_state *s, fw_ix_t ix)
+static int drx_load_fw(struct drx397xD_state *s, enum fw_ix ix)
{
const u8 *data;
size_t size, len;
int i = 0, j, rc = -EINVAL;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
if (ix < 0 || ix >= ARRAY_SIZE(fw))
return -EINVAL;
@@ -175,32 +172,34 @@ static int drx_load_fw(struct drx397xD_state *s, fw_ix_t ix)
goto exit_corrupt;
}
} while (i < size);
- exit_corrupt:
+
+exit_corrupt:
printk(KERN_ERR "%s: Firmware is corrupt\n", mod_name);
- exit_err:
+exit_err:
_drx_release_fw(s, ix);
fw[ix].refcnt--;
- exit_ok:
+exit_ok:
fw[ix].refcnt++;
write_unlock(&fw[ix].lock);
+
return rc;
}
-/*******************************************************************************
- * i2c bus IO
- ******************************************************************************/
-
-static int write_fw(struct drx397xD_state *s, blob_ix_t ix)
+/* i2c bus IO */
+static int write_fw(struct drx397xD_state *s, enum blob_ix ix)
{
- struct i2c_msg msg = {.addr = s->config.demod_address,.flags = 0 };
const u8 *data;
int len, rc = 0, i = 0;
+ struct i2c_msg msg = {
+ .addr = s->config.demod_address,
+ .flags = 0
+ };
if (ix < 0 || ix >= ARRAY_SIZE(blob_name)) {
- pr_debug("%s drx_fw_ix_t out of range\n", __FUNCTION__);
+ pr_debug("%s drx_fw_ix_t out of range\n", __func__);
return -EINVAL;
}
- pr_debug("%s %s\n", __FUNCTION__, blob_name[ix]);
+ pr_debug("%s %s\n", __func__, blob_name[ix]);
read_lock(&fw[s->chip_rev].lock);
data = fw[s->chip_rev].data[ix];
@@ -229,33 +228,33 @@ static int write_fw(struct drx397xD_state *s, blob_ix_t ix)
goto exit_rc;
}
}
- exit_rc:
+exit_rc:
read_unlock(&fw[s->chip_rev].lock);
+
return 0;
}
/* Function is not endian safe, use the RD16 wrapper below */
-static int _read16(struct drx397xD_state *s, u32 i2c_adr)
+static int _read16(struct drx397xD_state *s, __le32 i2c_adr)
{
int rc;
u8 a[4];
- u16 v;
+ __le16 v;
struct i2c_msg msg[2] = {
{
- .addr = s->config.demod_address,
- .flags = 0,
- .buf = a,
- .len = sizeof(a)
- }
- , {
- .addr = s->config.demod_address,
- .flags = I2C_M_RD,
- .buf = (u8 *) & v,
- .len = sizeof(v)
- }
+ .addr = s->config.demod_address,
+ .flags = 0,
+ .buf = a,
+ .len = sizeof(a)
+ }, {
+ .addr = s->config.demod_address,
+ .flags = I2C_M_RD,
+ .buf = (u8 *)&v,
+ .len = sizeof(v)
+ }
};
- *(u32 *) a = i2c_adr;
+ *(__le32 *) a = i2c_adr;
rc = i2c_transfer(s->i2c, msg, 2);
if (rc != 2)
@@ -265,7 +264,7 @@ static int _read16(struct drx397xD_state *s, u32 i2c_adr)
}
/* Function is not endian safe, use the WR16.. wrappers below */
-static int _write16(struct drx397xD_state *s, u32 i2c_adr, u16 val)
+static int _write16(struct drx397xD_state *s, __le32 i2c_adr, __le16 val)
{
u8 a[6];
int rc;
@@ -276,28 +275,28 @@ static int _write16(struct drx397xD_state *s, u32 i2c_adr, u16 val)
.len = sizeof(a)
};
- *(u32 *) a = i2c_adr;
- *(u16 *) & a[4] = val;
+ *(__le32 *)a = i2c_adr;
+ *(__le16 *)&a[4] = val;
rc = i2c_transfer(s->i2c, &msg, 1);
if (rc != 1)
return -EIO;
+
return 0;
}
-#define WR16(ss,adr, val) \
+#define WR16(ss, adr, val) \
_write16(ss, I2C_ADR_C0(adr), cpu_to_le16(val))
-#define WR16_E0(ss,adr, val) \
+#define WR16_E0(ss, adr, val) \
_write16(ss, I2C_ADR_E0(adr), cpu_to_le16(val))
-#define RD16(ss,adr) \
+#define RD16(ss, adr) \
_read16(ss, I2C_ADR_C0(adr))
-#define EXIT_RC( cmd ) if ( (rc = (cmd)) < 0) goto exit_rc
-
-/*******************************************************************************
- * Tuner callback
- ******************************************************************************/
+#define EXIT_RC(cmd) \
+ if ((rc = (cmd)) < 0) \
+ goto exit_rc
+/* Tuner callback */
static int PLL_Set(struct drx397xD_state *s,
struct dvb_frontend_parameters *fep, int *df_tuner)
{
@@ -305,7 +304,7 @@ static int PLL_Set(struct drx397xD_state *s,
u32 f_tuner, f = fep->frequency;
int rc;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
if ((f > s->frontend.ops.tuner_ops.info.frequency_max) ||
(f < s->frontend.ops.tuner_ops.info.frequency_min))
@@ -325,28 +324,26 @@ static int PLL_Set(struct drx397xD_state *s,
return rc;
*df_tuner = f_tuner - f;
- pr_debug("%s requested %d [Hz] tuner %d [Hz]\n", __FUNCTION__, f,
+ pr_debug("%s requested %d [Hz] tuner %d [Hz]\n", __func__, f,
f_tuner);
return 0;
}
-/*******************************************************************************
- * Demodulator helper functions
- ******************************************************************************/
-
+/* Demodulator helper functions */
static int SC_WaitForReady(struct drx397xD_state *s)
{
int cnt = 1000;
int rc;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
while (cnt--) {
rc = RD16(s, 0x820043);
if (rc == 0)
return 0;
}
+
return -1;
}
@@ -354,13 +351,14 @@ static int SC_SendCommand(struct drx397xD_state *s, int cmd)
{
int rc;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
WR16(s, 0x820043, cmd);
SC_WaitForReady(s);
rc = RD16(s, 0x820042);
if ((rc & 0xffff) == 0xffff)
return -1;
+
return 0;
}
@@ -368,7 +366,7 @@ static int HI_Command(struct drx397xD_state *s, u16 cmd)
{
int rc, cnt = 1000;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
rc = WR16(s, 0x420032, cmd);
if (rc < 0)
@@ -383,22 +381,24 @@ static int HI_Command(struct drx397xD_state *s, u16 cmd)
if (rc < 0)
return rc;
} while (--cnt);
+
return rc;
}
static int HI_CfgCommand(struct drx397xD_state *s)
{
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
WR16(s, 0x420033, 0x3973);
- WR16(s, 0x420034, s->config.w50); // code 4, log 4
- WR16(s, 0x420035, s->config.w52); // code 15, log 9
+ WR16(s, 0x420034, s->config.w50); /* code 4, log 4 */
+ WR16(s, 0x420035, s->config.w52); /* code 15, log 9 */
WR16(s, 0x420036, s->config.demod_address << 1);
- WR16(s, 0x420037, s->config.w56); // code (set_i2c ?? initX 1 ), log 1
-// WR16(s, 0x420033, 0x3973);
+ WR16(s, 0x420037, s->config.w56); /* code (set_i2c ?? initX 1 ), log 1 */
+ /* WR16(s, 0x420033, 0x3973); */
if ((s->config.w56 & 8) == 0)
return HI_Command(s, 3);
+
return WR16(s, 0x420032, 0x3);
}
@@ -419,7 +419,7 @@ static int SetCfgIfAgc(struct drx397xD_state *s, struct drx397xD_CfgIfAgc *agc)
u16 w0C = agc->w0C;
int quot, rem, i, rc = -EINVAL;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
if (agc->w04 > 0x3ff)
goto exit_rc;
@@ -468,7 +468,7 @@ static int SetCfgIfAgc(struct drx397xD_state *s, struct drx397xD_CfgIfAgc *agc)
i = slowIncrDecLUT_15272[rem / 28];
EXIT_RC(WR16(s, 0x0c2002b, i));
rc = WR16(s, 0x0c2002c, i);
- exit_rc:
+exit_rc:
return rc;
}
@@ -478,7 +478,7 @@ static int SetCfgRfAgc(struct drx397xD_state *s, struct drx397xD_CfgRfAgc *agc)
u16 w06 = agc->w06;
int rc = -1;
- pr_debug("%s %d 0x%x 0x%x\n", __FUNCTION__, agc->d00, w04, w06);
+ pr_debug("%s %d 0x%x 0x%x\n", __func__, agc->d00, w04, w06);
if (w04 > 0x3ff)
goto exit_rc;
@@ -498,7 +498,7 @@ static int SetCfgRfAgc(struct drx397xD_state *s, struct drx397xD_CfgRfAgc *agc)
rc &= ~2;
break;
case 0:
- // loc_8000659
+ /* loc_8000659 */
s->config.w9C &= ~2;
EXIT_RC(WR16(s, 0x0c20015, s->config.w9C));
EXIT_RC(RD16(s, 0x0c20010));
@@ -522,7 +522,8 @@ static int SetCfgRfAgc(struct drx397xD_state *s, struct drx397xD_CfgRfAgc *agc)
rc |= 2;
}
rc = WR16(s, 0x0c20013, rc);
- exit_rc:
+
+exit_rc:
return rc;
}
@@ -554,7 +555,7 @@ static int CorrectSysClockDeviation(struct drx397xD_state *s)
int lockstat;
u32 clk, clk_limit;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
if (s->config.d5C == 0) {
EXIT_RC(WR16(s, 0x08200e8, 0x010));
@@ -598,11 +599,12 @@ static int CorrectSysClockDeviation(struct drx397xD_state *s)
if (clk - s->config.f_osc * 1000 + clk_limit <= 2 * clk_limit) {
s->f_osc = clk;
- pr_debug("%s: osc %d %d [Hz]\n", __FUNCTION__,
+ pr_debug("%s: osc %d %d [Hz]\n", __func__,
s->config.f_osc * 1000, clk - s->config.f_osc * 1000);
}
rc = WR16(s, 0x08200e8, 0);
- exit_rc:
+
+exit_rc:
return rc;
}
@@ -610,7 +612,7 @@ static int ConfigureMPEGOutput(struct drx397xD_state *s, int type)
{
int rc, si, bp;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
si = s->config.wA0;
if (s->config.w98 == 0) {
@@ -620,17 +622,17 @@ static int ConfigureMPEGOutput(struct drx397xD_state *s, int type)
si &= ~1;
bp = 0x200;
}
- if (s->config.w9A == 0) {
+ if (s->config.w9A == 0)
si |= 0x80;
- } else {
+ else
si &= ~0x80;
- }
EXIT_RC(WR16(s, 0x2150045, 0));
EXIT_RC(WR16(s, 0x2150010, si));
EXIT_RC(WR16(s, 0x2150011, bp));
rc = WR16(s, 0x2150012, (type == 0 ? 0xfff : 0));
- exit_rc:
+
+exit_rc:
return rc;
}
@@ -646,7 +648,7 @@ static int drx_tune(struct drx397xD_state *s,
int rc, df_tuner;
int a, b, c, d;
- pr_debug("%s %d\n", __FUNCTION__, s->config.d60);
+ pr_debug("%s %d\n", __func__, s->config.d60);
if (s->config.d60 != 2)
goto set_tuner;
@@ -658,7 +660,7 @@ static int drx_tune(struct drx397xD_state *s,
rc = ConfigureMPEGOutput(s, 0);
if (rc < 0)
goto set_tuner;
- set_tuner:
+set_tuner:
rc = PLL_Set(s, fep, &df_tuner);
if (rc < 0) {
@@ -835,16 +837,16 @@ static int drx_tune(struct drx397xD_state *s,
rc = WR16(s, 0x2010012, 0);
if (rc < 0)
goto exit_rc;
- // QPSK QAM16 QAM64
- ebx = 0x19f; // 62
- ebp = 0x1fb; // 15
- v20 = 0x16a; // 62
- v1E = 0x195; // 62
- v16 = 0x1bb; // 15
- v14 = 0x1ef; // 15
- v12 = 5; // 16
- v10 = 5; // 16
- v0E = 5; // 16
+ /* QPSK QAM16 QAM64 */
+ ebx = 0x19f; /* 62 */
+ ebp = 0x1fb; /* 15 */
+ v20 = 0x16a; /* 62 */
+ v1E = 0x195; /* 62 */
+ v16 = 0x1bb; /* 15 */
+ v14 = 0x1ef; /* 15 */
+ v12 = 5; /* 16 */
+ v10 = 5; /* 16 */
+ v0E = 5; /* 16 */
}
switch (fep->u.ofdm.constellation) {
@@ -997,17 +999,17 @@ static int drx_tune(struct drx397xD_state *s,
case BANDWIDTH_8_MHZ: /* 0 */
case BANDWIDTH_AUTO:
rc = WR16(s, 0x0c2003f, 0x32);
- s->bandwidth_parm = ebx = 0x8b8249; // 9142857
+ s->bandwidth_parm = ebx = 0x8b8249;
edx = 0;
break;
case BANDWIDTH_7_MHZ:
rc = WR16(s, 0x0c2003f, 0x3b);
- s->bandwidth_parm = ebx = 0x7a1200; // 8000000
+ s->bandwidth_parm = ebx = 0x7a1200;
edx = 0x4807;
break;
case BANDWIDTH_6_MHZ:
rc = WR16(s, 0x0c2003f, 0x47);
- s->bandwidth_parm = ebx = 0x68a1b6; // 6857142
+ s->bandwidth_parm = ebx = 0x68a1b6;
edx = 0x0f07;
break;
};
@@ -1060,8 +1062,6 @@ static int drx_tune(struct drx397xD_state *s,
WR16(s, 0x0820040, 1);
SC_SendCommand(s, 1);
-// rc = WR16(s, 0x2150000, 1);
-// if (rc < 0) goto exit_rc;
rc = WR16(s, 0x2150000, 2);
rc = WR16(s, 0x2150016, a);
@@ -1069,7 +1069,8 @@ static int drx_tune(struct drx397xD_state *s,
rc = WR16(s, 0x2150036, 0);
rc = WR16(s, 0x2150000, 1);
s->config.d60 = 2;
- exit_rc:
+
+exit_rc:
return rc;
}
@@ -1082,7 +1083,7 @@ static int drx397x_init(struct dvb_frontend *fe)
struct drx397xD_state *s = fe->demodulator_priv;
int rc;
- pr_debug("%s\n", __FUNCTION__);
+ pr_debug("%s\n", __func__);
s->config.rfagc.d00 = 2; /* 0x7c */
s->config.rfagc.w04 = 0;
@@ -1102,18 +1103,18 @@ static int drx397x_init(struct dvb_frontend *fe)
/* HI_CfgCommand */
s->config.w50 = 4;
- s->config.w52 = 9; // 0xf;
+ s->config.w52 = 9;
- s->config.f_if = 42800000; /* d14: intermediate frequency [Hz] */
- s->config.f_osc = 48000; /* s66 : oscillator frequency [kHz] */
- s->config.w92 = 12000; // 20000;
+ s->config.f_if = 42800000; /* d14: intermediate frequency [Hz] */
+ s->config.f_osc = 48000; /* s66 : oscillator frequency [kHz] */
+ s->config.w92 = 12000;
s->config.w9C = 0x000e;
s->config.w9E = 0x0000;
/* ConfigureMPEGOutput params */
s->config.wA0 = 4;
- s->config.w98 = 1; // 0;
+ s->config.w98 = 1;
s->config.w9A = 1;
/* get chip revision */
@@ -1248,7 +1249,7 @@ static int drx397x_init(struct dvb_frontend *fe)
rc = WR16(s, 0x0c20012, 1);
}
- write_DRXD_InitFE_1:
+write_DRXD_InitFE_1:
rc = write_fw(s, DRXD_InitFE_1);
if (rc < 0)
@@ -1311,7 +1312,8 @@ static int drx397x_init(struct dvb_frontend *fe)
s->config.d5C = 0;
s->config.d60 = 1;
s->config.d48 = 1;
- error:
+
+error:
return rc;
}
@@ -1326,7 +1328,8 @@ static int drx397x_set_frontend(struct dvb_frontend *fe,
{
struct drx397xD_state *s = fe->demodulator_priv;
- s->config.s20d24 = 1; // 0;
+ s->config.s20d24 = 1;
+
return drx_tune(s, params);
}
@@ -1337,18 +1340,16 @@ static int drx397x_get_tune_settings(struct dvb_frontend *fe,
fe_tune_settings->min_delay_ms = 10000;
fe_tune_settings->step_size = 0;
fe_tune_settings->max_drift = 0;
+
return 0;
}
-static int drx397x_read_status(struct dvb_frontend *fe, fe_status_t * status)
+static int drx397x_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct drx397xD_state *s = fe->demodulator_priv;
int lockstat;
GetLockStatus(s, &lockstat);
- /* TODO */
-// if (lockstat & 1)
-// CorrectSysClockDeviation(s);
*status = 0;
if (lockstat & 2) {
@@ -1356,9 +1357,8 @@ static int drx397x_read_status(struct dvb_frontend *fe, fe_status_t * status)
ConfigureMPEGOutput(s, 1);
*status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI;
}
- if (lockstat & 4) {
+ if (lockstat & 4)
*status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
- }
return 0;
}
@@ -1366,16 +1366,18 @@ static int drx397x_read_status(struct dvb_frontend *fe, fe_status_t * status)
static int drx397x_read_ber(struct dvb_frontend *fe, unsigned int *ber)
{
*ber = 0;
+
return 0;
}
-static int drx397x_read_snr(struct dvb_frontend *fe, u16 * snr)
+static int drx397x_read_snr(struct dvb_frontend *fe, u16 *snr)
{
*snr = 0;
+
return 0;
}
-static int drx397x_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
+static int drx397x_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct drx397xD_state *s = fe->demodulator_priv;
int rc;
@@ -1401,6 +1403,7 @@ static int drx397x_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
* The following does the same but with less rounding errors:
*/
*strength = ~(7720 + (rc * 30744 >> 10));
+
return 0;
}
@@ -1408,6 +1411,7 @@ static int drx397x_read_ucblocks(struct dvb_frontend *fe,
unsigned int *ucblocks)
{
*ucblocks = 0;
+
return 0;
}
@@ -1436,22 +1440,22 @@ static struct dvb_frontend_ops drx397x_ops = {
.frequency_max = 855250000,
.frequency_stepsize = 166667,
.frequency_tolerance = 0,
- .caps = /* 0x0C01B2EAE */
- FE_CAN_FEC_1_2 | // = 0x2,
- FE_CAN_FEC_2_3 | // = 0x4,
- FE_CAN_FEC_3_4 | // = 0x8,
- FE_CAN_FEC_5_6 | // = 0x20,
- FE_CAN_FEC_7_8 | // = 0x80,
- FE_CAN_FEC_AUTO | // = 0x200,
- FE_CAN_QPSK | // = 0x400,
- FE_CAN_QAM_16 | // = 0x800,
- FE_CAN_QAM_64 | // = 0x2000,
- FE_CAN_QAM_AUTO | // = 0x10000,
- FE_CAN_TRANSMISSION_MODE_AUTO | // = 0x20000,
- FE_CAN_GUARD_INTERVAL_AUTO | // = 0x80000,
- FE_CAN_HIERARCHY_AUTO | // = 0x100000,
- FE_CAN_RECOVER | // = 0x40000000,
- FE_CAN_MUTE_TS // = 0x80000000
+ .caps = /* 0x0C01B2EAE */
+ FE_CAN_FEC_1_2 | /* = 0x2, */
+ FE_CAN_FEC_2_3 | /* = 0x4, */
+ FE_CAN_FEC_3_4 | /* = 0x8, */
+ FE_CAN_FEC_5_6 | /* = 0x20, */
+ FE_CAN_FEC_7_8 | /* = 0x80, */
+ FE_CAN_FEC_AUTO | /* = 0x200, */
+ FE_CAN_QPSK | /* = 0x400, */
+ FE_CAN_QAM_16 | /* = 0x800, */
+ FE_CAN_QAM_64 | /* = 0x2000, */
+ FE_CAN_QAM_AUTO | /* = 0x10000, */
+ FE_CAN_TRANSMISSION_MODE_AUTO | /* = 0x20000, */
+ FE_CAN_GUARD_INTERVAL_AUTO | /* = 0x80000, */
+ FE_CAN_HIERARCHY_AUTO | /* = 0x100000, */
+ FE_CAN_RECOVER | /* = 0x40000000, */
+ FE_CAN_MUTE_TS /* = 0x80000000 */
},
.release = drx397x_release,
@@ -1472,33 +1476,35 @@ static struct dvb_frontend_ops drx397x_ops = {
struct dvb_frontend *drx397xD_attach(const struct drx397xD_config *config,
struct i2c_adapter *i2c)
{
- struct drx397xD_state *s = NULL;
+ struct drx397xD_state *state;
/* allocate memory for the internal state */
- s = kzalloc(sizeof(struct drx397xD_state), GFP_KERNEL);
- if (s == NULL)
+ state = kzalloc(sizeof(struct drx397xD_state), GFP_KERNEL);
+ if (!state)
goto error;
/* setup the state */
- s->i2c = i2c;
- memcpy(&s->config, config, sizeof(struct drx397xD_config));
+ state->i2c = i2c;
+ memcpy(&state->config, config, sizeof(struct drx397xD_config));
/* check if the demod is there */
- if (RD16(s, 0x2410019) < 0)
+ if (RD16(state, 0x2410019) < 0)
goto error;
/* create dvb_frontend */
- memcpy(&s->frontend.ops, &drx397x_ops, sizeof(struct dvb_frontend_ops));
- s->frontend.demodulator_priv = s;
+ memcpy(&state->frontend.ops, &drx397x_ops,
+ sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+
+ return &state->frontend;
+error:
+ kfree(state);
- return &s->frontend;
- error:
- kfree(s);
return NULL;
}
+EXPORT_SYMBOL(drx397xD_attach);
MODULE_DESCRIPTION("Micronas DRX397xD DVB-T Frontend");
MODULE_AUTHOR("Henk Vergonet");
MODULE_LICENSE("GPL");
-EXPORT_SYMBOL(drx397xD_attach);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-14 08:56:50 +0000