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android_kernel_xiaomi_sm8350/drivers/media/dvb/frontends/drx397xD.c
Julia Lawall f277097929 V4L/DVB: drivers/media: Use available error codes 
In each case, error codes are stored in rc, but the return value is always
0.  Return rc instead.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
local idexpression x;
constant C;
@@

if (...) { ...
  x = -C
  ... when != x
(
  return <+...x...+>;
|
  return NULL;
|
  return;
|
* return ...;
)
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:48 -02:00

1512 lines
30 KiB
C
Raw Blame History

/*
* Driver for Micronas drx397xD demodulator
*
* Copyright (C) 2007 Henk Vergonet <Henk.Vergonet@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; If not, see <http://www.gnu.org/licenses/>.
*/
#define DEBUG /* uncomment if you want debugging output */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/firmware.h>
#include <linux/slab.h>
#include <asm/div64.h>
#include "dvb_frontend.h"
#include "drx397xD.h"
static const char mod_name[] = "drx397xD";
#define MAX_CLOCK_DRIFT 200 /* maximal 200 PPM allowed */
#define F_SET_0D0h 1
#define F_SET_0D4h 2
enum fw_ix {
#define _FW_ENTRY(a, b, c) b
#include "drx397xD_fw.h"
};
/* chip specifics */
struct drx397xD_state {
struct i2c_adapter *i2c;
struct dvb_frontend frontend;
struct drx397xD_config config;
enum fw_ix chip_rev;
int flags;
u32 bandwidth_parm; /* internal bandwidth conversions */
u32 f_osc; /* w90: actual osc frequency [Hz] */
};
/* Firmware */
static const char *blob_name[] = {
#define _BLOB_ENTRY(a, b) a
#include "drx397xD_fw.h"
};
enum blob_ix {
#define _BLOB_ENTRY(a, b) b
#include "drx397xD_fw.h"
};
static struct {
const char *name;
const struct firmware *file;
rwlock_t lock;
int refcnt;
const u8 *data[ARRAY_SIZE(blob_name)];
} fw[] = {
#define _FW_ENTRY(a, b, c) { \
.name = a, \
.file = NULL, \
.lock = __RW_LOCK_UNLOCKED(fw[c].lock), \
.refcnt = 0, \
.data = { } }
#include "drx397xD_fw.h"
};
/* use only with writer lock acquired */
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)
release_firmware(fw[ix].file);
}
static void drx_release_fw(struct drx397xD_state *s)
{
enum fw_ix ix = s->chip_rev;
pr_debug("%s\n", __func__);
write_lock(&fw[ix].lock);
if (fw[ix].refcnt) {
fw[ix].refcnt--;
if (fw[ix].refcnt == 0)
_drx_release_fw(s, ix);
}
write_unlock(&fw[ix].lock);
}
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", __func__);
if (ix < 0 || ix >= ARRAY_SIZE(fw))
return -EINVAL;
s->chip_rev = ix;
write_lock(&fw[ix].lock);
if (fw[ix].file) {
rc = 0;
goto exit_ok;
}
memset(&fw[ix].data[0], 0, sizeof(fw[0].data));
rc = request_firmware(&fw[ix].file, fw[ix].name, s->i2c->dev.parent);
if (rc != 0) {
printk(KERN_ERR "%s: Firmware \"%s\" not available\n",
mod_name, fw[ix].name);
goto exit_err;
}
if (!fw[ix].file->data || fw[ix].file->size < 10)
goto exit_corrupt;
data = fw[ix].file->data;
size = fw[ix].file->size;
if (data[i++] != 2) /* check firmware version */
goto exit_corrupt;
do {
switch (data[i++]) {
case 0x00: /* bytecode */
if (i >= size)
break;
i += data[i];
case 0x01: /* reset */
case 0x02: /* sleep */
i++;
break;
case 0xfe: /* name */
len = strnlen(&data[i], size - i);
if (i + len + 1 >= size)
goto exit_corrupt;
if (data[i + len + 1] != 0)
goto exit_corrupt;
for (j = 0; j < ARRAY_SIZE(blob_name); j++) {
if (strcmp(blob_name[j], &data[i]) == 0) {
fw[ix].data[j] = &data[i + len + 1];
pr_debug("Loading %s\n", blob_name[j]);
}
}
i += len + 1;
break;
case 0xff: /* file terminator */
if (i == size) {
rc = 0;
goto exit_ok;
}
default:
goto exit_corrupt;
}
} while (i < size);
exit_corrupt:
printk(KERN_ERR "%s: Firmware is corrupt\n", mod_name);
exit_err:
_drx_release_fw(s, ix);
fw[ix].refcnt--;
exit_ok:
fw[ix].refcnt++;
write_unlock(&fw[ix].lock);
return rc;
}
/* i2c bus IO */
static int write_fw(struct drx397xD_state *s, enum blob_ix ix)
{
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", __func__);
return -EINVAL;
}
pr_debug("%s %s\n", __func__, blob_name[ix]);
read_lock(&fw[s->chip_rev].lock);
data = fw[s->chip_rev].data[ix];
if (!data) {
rc = -EINVAL;
goto exit_rc;
}
for (;;) {
switch (data[i++]) {
case 0: /* bytecode */
len = data[i++];
msg.len = len;
msg.buf = (__u8 *) &data[i];
if (i2c_transfer(s->i2c, &msg, 1) != 1) {
rc = -EIO;
goto exit_rc;
}
i += len;
break;
case 1: /* reset */
case 2: /* sleep */
i++;
break;
default:
goto exit_rc;
}
}
exit_rc:
read_unlock(&fw[s->chip_rev].lock);
return rc;
}
/* Function is not endian safe, use the RD16 wrapper below */
static int _read16(struct drx397xD_state *s, __le32 i2c_adr)
{
int rc;
u8 a[4];
__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)
}
};
*(__le32 *) a = i2c_adr;
rc = i2c_transfer(s->i2c, msg, 2);
if (rc != 2)
return -EIO;
return le16_to_cpu(v);
}
/* Function is not endian safe, use the WR16.. wrappers below */
static int _write16(struct drx397xD_state *s, __le32 i2c_adr, __le16 val)
{
u8 a[6];
int rc;
struct i2c_msg msg = {
.addr = s->config.demod_address,
.flags = 0,
.buf = a,
.len = sizeof(a)
};
*(__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) \
_write16(ss, I2C_ADR_C0(adr), cpu_to_le16(val))
#define WR16_E0(ss, adr, val) \
_write16(ss, I2C_ADR_E0(adr), cpu_to_le16(val))
#define RD16(ss, adr) \
_read16(ss, I2C_ADR_C0(adr))
#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)
{
struct dvb_frontend *fe = &s->frontend;
u32 f_tuner, f = fep->frequency;
int rc;
pr_debug("%s\n", __func__);
if ((f > s->frontend.ops.tuner_ops.info.frequency_max) ||
(f < s->frontend.ops.tuner_ops.info.frequency_min))
return -EINVAL;
*df_tuner = 0;
if (!s->frontend.ops.tuner_ops.set_params ||
!s->frontend.ops.tuner_ops.get_frequency)
return -ENOSYS;
rc = s->frontend.ops.tuner_ops.set_params(fe, fep);
if (rc < 0)
return rc;
rc = s->frontend.ops.tuner_ops.get_frequency(fe, &f_tuner);
if (rc < 0)
return rc;
*df_tuner = f_tuner - f;
pr_debug("%s requested %d [Hz] tuner %d [Hz]\n", __func__, f,
f_tuner);
return 0;
}
/* Demodulator helper functions */
static int SC_WaitForReady(struct drx397xD_state *s)
{
int cnt = 1000;
int rc;
pr_debug("%s\n", __func__);
while (cnt--) {
rc = RD16(s, 0x820043);
if (rc == 0)
return 0;
}
return -1;
}
static int SC_SendCommand(struct drx397xD_state *s, int cmd)
{
int rc;
pr_debug("%s\n", __func__);
WR16(s, 0x820043, cmd);
SC_WaitForReady(s);
rc = RD16(s, 0x820042);
if ((rc & 0xffff) == 0xffff)
return -1;
return 0;
}
static int HI_Command(struct drx397xD_state *s, u16 cmd)
{
int rc, cnt = 1000;
pr_debug("%s\n", __func__);
rc = WR16(s, 0x420032, cmd);
if (rc < 0)
return rc;
do {
rc = RD16(s, 0x420032);
if (rc == 0) {
rc = RD16(s, 0x420031);
return rc;
}
if (rc < 0)
return rc;
} while (--cnt);
return rc;
}
static int HI_CfgCommand(struct drx397xD_state *s)
{
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, 0x420036, s->config.demod_address << 1);
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);
}
static const u8 fastIncrDecLUT_15273[] = {
0x0e, 0x0f, 0x0f, 0x10, 0x11, 0x12, 0x12, 0x13, 0x14,
0x15, 0x16, 0x17, 0x18, 0x1a, 0x1b, 0x1c, 0x1d, 0x1f
};
static const u8 slowIncrDecLUT_15272[] = {
3, 4, 4, 5, 6
};
static int SetCfgIfAgc(struct drx397xD_state *s, struct drx397xD_CfgIfAgc *agc)
{
u16 w06 = agc->w06;
u16 w08 = agc->w08;
u16 w0A = agc->w0A;
u16 w0C = agc->w0C;
int quot, rem, i, rc = -EINVAL;
pr_debug("%s\n", __func__);
if (agc->w04 > 0x3ff)
goto exit_rc;
if (agc->d00 == 1) {
EXIT_RC(RD16(s, 0x0c20010));
rc &= ~0x10;
EXIT_RC(WR16(s, 0x0c20010, rc));
return WR16(s, 0x0c20030, agc->w04 & 0x7ff);
}
if (agc->d00 != 0)
goto exit_rc;
if (w0A < w08)
goto exit_rc;
if (w0A > 0x3ff)
goto exit_rc;
if (w0C > 0x3ff)
goto exit_rc;
if (w06 > 0x3ff)
goto exit_rc;
EXIT_RC(RD16(s, 0x0c20010));
rc |= 0x10;
EXIT_RC(WR16(s, 0x0c20010, rc));
EXIT_RC(WR16(s, 0x0c20025, (w06 >> 1) & 0x1ff));
EXIT_RC(WR16(s, 0x0c20031, (w0A - w08) >> 1));
EXIT_RC(WR16(s, 0x0c20032, ((w0A + w08) >> 1) - 0x1ff));
quot = w0C / 113;
rem = w0C % 113;
if (quot <= 8) {
quot = 8 - quot;
} else {
quot = 0;
rem += 113;
}
EXIT_RC(WR16(s, 0x0c20024, quot));
i = fastIncrDecLUT_15273[rem / 8];
EXIT_RC(WR16(s, 0x0c2002d, i));
EXIT_RC(WR16(s, 0x0c2002e, i));
i = slowIncrDecLUT_15272[rem / 28];
EXIT_RC(WR16(s, 0x0c2002b, i));
rc = WR16(s, 0x0c2002c, i);
exit_rc:
return rc;
}
static int SetCfgRfAgc(struct drx397xD_state *s, struct drx397xD_CfgRfAgc *agc)
{
u16 w04 = agc->w04;
u16 w06 = agc->w06;
int rc = -1;
pr_debug("%s %d 0x%x 0x%x\n", __func__, agc->d00, w04, w06);
if (w04 > 0x3ff)
goto exit_rc;
switch (agc->d00) {
case 1:
if (w04 == 0x3ff)
w04 = 0x400;
EXIT_RC(WR16(s, 0x0c20036, w04));
s->config.w9C &= ~2;
EXIT_RC(WR16(s, 0x0c20015, s->config.w9C));
EXIT_RC(RD16(s, 0x0c20010));
rc &= 0xbfdf;
EXIT_RC(WR16(s, 0x0c20010, rc));
EXIT_RC(RD16(s, 0x0c20013));
rc &= ~2;
break;
case 0:
/* loc_8000659 */
s->config.w9C &= ~2;
EXIT_RC(WR16(s, 0x0c20015, s->config.w9C));
EXIT_RC(RD16(s, 0x0c20010));
rc &= 0xbfdf;
rc |= 0x4000;
EXIT_RC(WR16(s, 0x0c20010, rc));
EXIT_RC(WR16(s, 0x0c20051, (w06 >> 4) & 0x3f));
EXIT_RC(RD16(s, 0x0c20013));
rc &= ~2;
break;
default:
s->config.w9C |= 2;
EXIT_RC(WR16(s, 0x0c20015, s->config.w9C));
EXIT_RC(RD16(s, 0x0c20010));
rc &= 0xbfdf;
EXIT_RC(WR16(s, 0x0c20010, rc));
EXIT_RC(WR16(s, 0x0c20036, 0));
EXIT_RC(RD16(s, 0x0c20013));
rc |= 2;
}
rc = WR16(s, 0x0c20013, rc);
exit_rc:
return rc;
}
static int GetLockStatus(struct drx397xD_state *s, int *lockstat)
{
int rc;
*lockstat = 0;
rc = RD16(s, 0x082004b);
if (rc < 0)
return rc;
if (s->config.d60 != 2)
return 0;
if ((rc & 7) == 7)
*lockstat |= 1;
if ((rc & 3) == 3)
*lockstat |= 2;
if (rc & 1)
*lockstat |= 4;
return 0;
}
static int CorrectSysClockDeviation(struct drx397xD_state *s)
{
int rc = -EINVAL;
int lockstat;
u32 clk, clk_limit;
pr_debug("%s\n", __func__);
if (s->config.d5C == 0) {
EXIT_RC(WR16(s, 0x08200e8, 0x010));
EXIT_RC(WR16(s, 0x08200e9, 0x113));
s->config.d5C = 1;
return rc;
}
if (s->config.d5C != 1)
goto exit_rc;
rc = RD16(s, 0x0820048);
rc = GetLockStatus(s, &lockstat);
if (rc < 0)
goto exit_rc;
if ((lockstat & 1) == 0)
goto exit_rc;
EXIT_RC(WR16(s, 0x0420033, 0x200));
EXIT_RC(WR16(s, 0x0420034, 0xc5));
EXIT_RC(WR16(s, 0x0420035, 0x10));
EXIT_RC(WR16(s, 0x0420036, 0x1));
EXIT_RC(WR16(s, 0x0420037, 0xa));
EXIT_RC(HI_Command(s, 6));
EXIT_RC(RD16(s, 0x0420040));
clk = rc;
EXIT_RC(RD16(s, 0x0420041));
clk |= rc << 16;
if (clk <= 0x26ffff)
goto exit_rc;
if (clk > 0x610000)
goto exit_rc;
if (!s->bandwidth_parm)
return -EINVAL;
/* round & convert to Hz */
clk = ((u64) (clk + 0x800000) * s->bandwidth_parm + (1 << 20)) >> 21;
clk_limit = s->config.f_osc * MAX_CLOCK_DRIFT / 1000;
if (clk - s->config.f_osc * 1000 + clk_limit <= 2 * clk_limit) {
s->f_osc = clk;
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:
return rc;
}
static int ConfigureMPEGOutput(struct drx397xD_state *s, int type)
{
int rc, si, bp;
pr_debug("%s\n", __func__);
si = s->config.wA0;
if (s->config.w98 == 0) {
si |= 1;
bp = 0;
} else {
si &= ~1;
bp = 0x200;
}
if (s->config.w9A == 0)
si |= 0x80;
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:
return rc;
}
static int drx_tune(struct drx397xD_state *s,
struct dvb_frontend_parameters *fep)
{
u16 v22 = 0;
u16 v1C = 0;
u16 v1A = 0;
u16 v18 = 0;
u32 edi = 0, ebx = 0, ebp = 0, edx = 0;
u16 v20 = 0, v1E = 0, v16 = 0, v14 = 0, v12 = 0, v10 = 0, v0E = 0;
int rc, df_tuner = 0;
int a, b, c, d;
pr_debug("%s %d\n", __func__, s->config.d60);
if (s->config.d60 != 2)
goto set_tuner;
rc = CorrectSysClockDeviation(s);
if (rc < 0)
goto set_tuner;
s->config.d60 = 1;
rc = ConfigureMPEGOutput(s, 0);
if (rc < 0)
goto set_tuner;
set_tuner:
rc = PLL_Set(s, fep, &df_tuner);
if (rc < 0) {
printk(KERN_ERR "Error in pll_set\n");
goto exit_rc;
}
msleep(200);
a = rc = RD16(s, 0x2150016);
if (rc < 0)
goto exit_rc;
b = rc = RD16(s, 0x2150010);
if (rc < 0)
goto exit_rc;
c = rc = RD16(s, 0x2150034);
if (rc < 0)
goto exit_rc;
d = rc = RD16(s, 0x2150035);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x2150014, c);
rc = WR16(s, 0x2150015, d);
rc = WR16(s, 0x2150010, 0);
rc = WR16(s, 0x2150000, 2);
rc = WR16(s, 0x2150036, 0x0fff);
rc = WR16(s, 0x2150016, a);
rc = WR16(s, 0x2150010, 2);
rc = WR16(s, 0x2150007, 0);
rc = WR16(s, 0x2150000, 1);
rc = WR16(s, 0x2110000, 0);
rc = WR16(s, 0x0800000, 0);
rc = WR16(s, 0x2800000, 0);
rc = WR16(s, 0x2110010, 0x664);
rc = write_fw(s, DRXD_ResetECRAM);
rc = WR16(s, 0x2110000, 1);
rc = write_fw(s, DRXD_InitSC);
if (rc < 0)
goto exit_rc;
rc = SetCfgIfAgc(s, &s->config.ifagc);
if (rc < 0)
goto exit_rc;
rc = SetCfgRfAgc(s, &s->config.rfagc);
if (rc < 0)
goto exit_rc;
if (fep->u.ofdm.transmission_mode != TRANSMISSION_MODE_2K)
v22 = 1;
switch (fep->u.ofdm.transmission_mode) {
case TRANSMISSION_MODE_8K:
edi = 1;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x2010010, 0);
if (rc < 0)
break;
v1C = 0x63;
v1A = 0x53;
v18 = 0x43;
break;
default:
edi = 0;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x2010010, 1);
if (rc < 0)
break;
v1C = 0x61;
v1A = 0x47;
v18 = 0x41;
}
switch (fep->u.ofdm.guard_interval) {
case GUARD_INTERVAL_1_4:
edi |= 0x0c;
break;
case GUARD_INTERVAL_1_8:
edi |= 0x08;
break;
case GUARD_INTERVAL_1_16:
edi |= 0x04;
break;
case GUARD_INTERVAL_1_32:
break;
default:
v22 |= 2;
}
ebx = 0;
ebp = 0;
v20 = 0;
v1E = 0;
v16 = 0;
v14 = 0;
v12 = 0;
v10 = 0;
v0E = 0;
switch (fep->u.ofdm.hierarchy_information) {
case HIERARCHY_1:
edi |= 0x40;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x1c10047, 1);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x2010012, 1);
if (rc < 0)
goto exit_rc;
ebx = 0x19f;
ebp = 0x1fb;
v20 = 0x0c0;
v1E = 0x195;
v16 = 0x1d6;
v14 = 0x1ef;
v12 = 4;
v10 = 5;
v0E = 5;
break;
case HIERARCHY_2:
edi |= 0x80;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x1c10047, 2);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x2010012, 2);
if (rc < 0)
goto exit_rc;
ebx = 0x08f;
ebp = 0x12f;
v20 = 0x0c0;
v1E = 0x11e;
v16 = 0x1d6;
v14 = 0x15e;
v12 = 4;
v10 = 5;
v0E = 5;
break;
case HIERARCHY_4:
edi |= 0xc0;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x1c10047, 3);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x2010012, 3);
if (rc < 0)
goto exit_rc;
ebx = 0x14d;
ebp = 0x197;
v20 = 0x0c0;
v1E = 0x1ce;
v16 = 0x1d6;
v14 = 0x11a;
v12 = 4;
v10 = 6;
v0E = 5;
break;
default:
v22 |= 8;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x1c10047, 0);
if (rc < 0)
goto exit_rc;
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 */
}
switch (fep->u.ofdm.constellation) {
default:
v22 |= 4;
case QPSK:
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x1c10046, 0);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x2010011, 0);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001a, 0x10);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001b, 0);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001c, 0);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10062, v20);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c1002a, v1C);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10015, v16);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10016, v12);
if (rc < 0)
goto exit_rc;
break;
case QAM_16:
edi |= 0x10;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x1c10046, 1);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x2010011, 1);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001a, 0x10);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001b, 4);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001c, 0);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10062, v1E);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c1002a, v1A);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10015, v14);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10016, v10);
if (rc < 0)
goto exit_rc;
break;
case QAM_64:
edi |= 0x20;
rc = WR16(s, 0x1c10046, 2);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x2010011, 2);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001a, 0x20);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001b, 8);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x201001c, 2);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10062, ebx);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c1002a, v18);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10015, ebp);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x1c10016, v0E);
if (rc < 0)
goto exit_rc;
break;
}
if (s->config.s20d24 == 1) {
rc = WR16(s, 0x2010013, 0);
} else {
rc = WR16(s, 0x2010013, 1);
edi |= 0x1000;
}
switch (fep->u.ofdm.code_rate_HP) {
default:
v22 |= 0x10;
case FEC_1_2:
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x2090011, 0);
break;
case FEC_2_3:
edi |= 0x200;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x2090011, 1);
break;
case FEC_3_4:
edi |= 0x400;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x2090011, 2);
break;
case FEC_5_6: /* 5 */
edi |= 0x600;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x2090011, 3);
break;
case FEC_7_8: /* 7 */
edi |= 0x800;
if (s->chip_rev == DRXD_FW_B1)
break;
rc = WR16(s, 0x2090011, 4);
break;
};
if (rc < 0)
goto exit_rc;
switch (fep->u.ofdm.bandwidth) {
default:
rc = -EINVAL;
goto exit_rc;
case BANDWIDTH_8_MHZ: /* 0 */
case BANDWIDTH_AUTO:
rc = WR16(s, 0x0c2003f, 0x32);
s->bandwidth_parm = ebx = 0x8b8249;
edx = 0;
break;
case BANDWIDTH_7_MHZ:
rc = WR16(s, 0x0c2003f, 0x3b);
s->bandwidth_parm = ebx = 0x7a1200;
edx = 0x4807;
break;
case BANDWIDTH_6_MHZ:
rc = WR16(s, 0x0c2003f, 0x47);
s->bandwidth_parm = ebx = 0x68a1b6;
edx = 0x0f07;
break;
};
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x08200ec, edx);
if (rc < 0)
goto exit_rc;
rc = RD16(s, 0x0820050);
if (rc < 0)
goto exit_rc;
rc = WR16(s, 0x0820050, rc);
{
/* Configure bandwidth specific factor */
ebx = div64_u64(((u64) (s->f_osc) << 21) + (ebx >> 1),
(u64)ebx) - 0x800000;
EXIT_RC(WR16(s, 0x0c50010, ebx & 0xffff));
EXIT_RC(WR16(s, 0x0c50011, ebx >> 16));
/* drx397xD oscillator calibration */
ebx = div64_u64(((u64) (s->config.f_if + df_tuner) << 28) +
(s->f_osc >> 1), (u64)s->f_osc);
}
ebx &= 0xfffffff;
if (fep->inversion == INVERSION_ON)
ebx = 0x10000000 - ebx;
EXIT_RC(WR16(s, 0x0c30010, ebx & 0xffff));
EXIT_RC(WR16(s, 0x0c30011, ebx >> 16));
EXIT_RC(WR16(s, 0x0800000, 1));
EXIT_RC(RD16(s, 0x0800000));
EXIT_RC(SC_WaitForReady(s));
EXIT_RC(WR16(s, 0x0820042, 0));
EXIT_RC(WR16(s, 0x0820041, v22));
EXIT_RC(WR16(s, 0x0820040, edi));
EXIT_RC(SC_SendCommand(s, 3));
rc = RD16(s, 0x0800000);
SC_WaitForReady(s);
WR16(s, 0x0820042, 0);
WR16(s, 0x0820041, 1);
WR16(s, 0x0820040, 1);
SC_SendCommand(s, 1);
rc = WR16(s, 0x2150000, 2);
rc = WR16(s, 0x2150016, a);
rc = WR16(s, 0x2150010, 4);
rc = WR16(s, 0x2150036, 0);
rc = WR16(s, 0x2150000, 1);
s->config.d60 = 2;
exit_rc:
return rc;
}
/*******************************************************************************
* DVB interface
******************************************************************************/
static int drx397x_init(struct dvb_frontend *fe)
{
struct drx397xD_state *s = fe->demodulator_priv;
int rc;
pr_debug("%s\n", __func__);
s->config.rfagc.d00 = 2; /* 0x7c */
s->config.rfagc.w04 = 0;
s->config.rfagc.w06 = 0x3ff;
s->config.ifagc.d00 = 0; /* 0x68 */
s->config.ifagc.w04 = 0;
s->config.ifagc.w06 = 140;
s->config.ifagc.w08 = 0;
s->config.ifagc.w0A = 0x3ff;
s->config.ifagc.w0C = 0x388;
/* for signal strenght calculations */
s->config.ss76 = 820;
s->config.ss78 = 2200;
s->config.ss7A = 150;
/* HI_CfgCommand */
s->config.w50 = 4;
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;
s->config.w9C = 0x000e;
s->config.w9E = 0x0000;
/* ConfigureMPEGOutput params */
s->config.wA0 = 4;
s->config.w98 = 1;
s->config.w9A = 1;
/* get chip revision */
rc = RD16(s, 0x2410019);
if (rc < 0)
return -ENODEV;
if (rc == 0) {
printk(KERN_INFO "%s: chip revision A2\n", mod_name);
rc = drx_load_fw(s, DRXD_FW_A2);
} else {
rc = (rc >> 12) - 3;
switch (rc) {
case 1:
s->flags |= F_SET_0D4h;
case 0:
case 4:
s->flags |= F_SET_0D0h;
break;
case 2:
case 5:
break;
case 3:
s->flags |= F_SET_0D4h;
break;
default:
return -ENODEV;
};
printk(KERN_INFO "%s: chip revision B1.%d\n", mod_name, rc);
rc = drx_load_fw(s, DRXD_FW_B1);
}
if (rc < 0)
goto error;
rc = WR16(s, 0x0420033, 0x3973);
if (rc < 0)
goto error;
rc = HI_Command(s, 2);
msleep(1);
if (s->chip_rev == DRXD_FW_A2) {
rc = WR16(s, 0x043012d, 0x47F);
if (rc < 0)
goto error;
}
rc = WR16_E0(s, 0x0400000, 0);
if (rc < 0)
goto error;
if (s->config.w92 > 20000 || s->config.w92 % 4000) {
printk(KERN_ERR "%s: invalid osc frequency\n", mod_name);
rc = -1;
goto error;
}
rc = WR16(s, 0x2410010, 1);
if (rc < 0)
goto error;
rc = WR16(s, 0x2410011, 0x15);
if (rc < 0)
goto error;
rc = WR16(s, 0x2410012, s->config.w92 / 4000);
if (rc < 0)
goto error;
#ifdef ORIG_FW
rc = WR16(s, 0x2410015, 2);
if (rc < 0)
goto error;
#endif
rc = WR16(s, 0x2410017, 0x3973);
if (rc < 0)
goto error;
s->f_osc = s->config.f_osc * 1000; /* initial estimator */
s->config.w56 = 1;
rc = HI_CfgCommand(s);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitAtomicRead);
if (rc < 0)
goto error;
if (s->chip_rev == DRXD_FW_A2) {
rc = WR16(s, 0x2150013, 0);
if (rc < 0)
goto error;
}
rc = WR16_E0(s, 0x0400002, 0);
if (rc < 0)
goto error;
rc = WR16(s, 0x0400002, 0);
if (rc < 0)
goto error;
if (s->chip_rev == DRXD_FW_A2) {
rc = write_fw(s, DRXD_ResetCEFR);
if (rc < 0)
goto error;
}
rc = write_fw(s, DRXD_microcode);
if (rc < 0)
goto error;
s->config.w9C = 0x0e;
if (s->flags & F_SET_0D0h) {
s->config.w9C = 0;
rc = RD16(s, 0x0c20010);
if (rc < 0)
goto write_DRXD_InitFE_1;
rc &= ~0x1000;
rc = WR16(s, 0x0c20010, rc);
if (rc < 0)
goto write_DRXD_InitFE_1;
rc = RD16(s, 0x0c20011);
if (rc < 0)
goto write_DRXD_InitFE_1;
rc &= ~0x8;
rc = WR16(s, 0x0c20011, rc);
if (rc < 0)
goto write_DRXD_InitFE_1;
rc = WR16(s, 0x0c20012, 1);
}
write_DRXD_InitFE_1:
rc = write_fw(s, DRXD_InitFE_1);
if (rc < 0)
goto error;
rc = 1;
if (s->chip_rev == DRXD_FW_B1) {
if (s->flags & F_SET_0D0h)
rc = 0;
} else {
if (s->flags & F_SET_0D0h)
rc = 4;
}
rc = WR16(s, 0x0C20012, rc);
if (rc < 0)
goto error;
rc = WR16(s, 0x0C20013, s->config.w9E);
if (rc < 0)
goto error;
rc = WR16(s, 0x0C20015, s->config.w9C);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitFE_2);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitFT);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitCP);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitCE);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitEQ);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitEC);
if (rc < 0)
goto error;
rc = write_fw(s, DRXD_InitSC);
if (rc < 0)
goto error;
rc = SetCfgIfAgc(s, &s->config.ifagc);
if (rc < 0)
goto error;
rc = SetCfgRfAgc(s, &s->config.rfagc);
if (rc < 0)
goto error;
rc = ConfigureMPEGOutput(s, 1);
rc = WR16(s, 0x08201fe, 0x0017);
rc = WR16(s, 0x08201ff, 0x0101);
s->config.d5C = 0;
s->config.d60 = 1;
s->config.d48 = 1;
error:
return rc;
}
static int drx397x_get_frontend(struct dvb_frontend *fe,
struct dvb_frontend_parameters *params)
{
return 0;
}
static int drx397x_set_frontend(struct dvb_frontend *fe,
struct dvb_frontend_parameters *params)
{
struct drx397xD_state *s = fe->demodulator_priv;
s->config.s20d24 = 1;
return drx_tune(s, params);
}
static int drx397x_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings
*fe_tune_settings)
{
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)
{
struct drx397xD_state *s = fe->demodulator_priv;
int lockstat;
GetLockStatus(s, &lockstat);
*status = 0;
if (lockstat & 2) {
CorrectSysClockDeviation(s);
ConfigureMPEGOutput(s, 1);
*status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI;
}
if (lockstat & 4)
*status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
return 0;
}
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)
{
*snr = 0;
return 0;
}
static int drx397x_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct drx397xD_state *s = fe->demodulator_priv;
int rc;
if (s->config.ifagc.d00 == 2) {
*strength = 0xffff;
return 0;
}
rc = RD16(s, 0x0c20035);
if (rc < 0) {
*strength = 0;
return 0;
}
rc &= 0x3ff;
/* Signal strength is calculated using the following formula:
*
* a = 2200 * 150 / (2200 + 150);
* a = a * 3300 / (a + 820);
* b = 2200 * 3300 / (2200 + 820);
* c = (((b-a) * rc) >> 10 + a) << 4;
* strength = ~c & 0xffff;
*
* The following does the same but with less rounding errors:
*/
*strength = ~(7720 + (rc * 30744 >> 10));
return 0;
}
static int drx397x_read_ucblocks(struct dvb_frontend *fe,
unsigned int *ucblocks)
{
*ucblocks = 0;
return 0;
}
static int drx397x_sleep(struct dvb_frontend *fe)
{
return 0;
}
static void drx397x_release(struct dvb_frontend *fe)
{
struct drx397xD_state *s = fe->demodulator_priv;
printk(KERN_INFO "%s: release demodulator\n", mod_name);
if (s) {
drx_release_fw(s);
kfree(s);
}
}
static struct dvb_frontend_ops drx397x_ops = {
.info = {
.name = "Micronas DRX397xD DVB-T Frontend",
.type = FE_OFDM,
.frequency_min = 47125000,
.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 */
},
.release = drx397x_release,
.init = drx397x_init,
.sleep = drx397x_sleep,
.set_frontend = drx397x_set_frontend,
.get_tune_settings = drx397x_get_tune_settings,
.get_frontend = drx397x_get_frontend,
.read_status = drx397x_read_status,
.read_snr = drx397x_read_snr,
.read_signal_strength = drx397x_read_signal_strength,
.read_ber = drx397x_read_ber,
.read_ucblocks = drx397x_read_ucblocks,
};
struct dvb_frontend *drx397xD_attach(const struct drx397xD_config *config,
struct i2c_adapter *i2c)
{
struct drx397xD_state *state;
/* allocate memory for the internal state */
state = kzalloc(sizeof(struct drx397xD_state), GFP_KERNEL);
if (!state)
goto error;
/* setup the state */
state->i2c = i2c;
memcpy(&state->config, config, sizeof(struct drx397xD_config));
/* check if the demod is there */
if (RD16(state, 0x2410019) < 0)
goto error;
/* create dvb_frontend */
memcpy(&state->frontend.ops, &drx397x_ops,
sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL(drx397xD_attach);
MODULE_DESCRIPTION("Micronas DRX397xD DVB-T Frontend");
MODULE_AUTHOR("Henk Vergonet");
MODULE_LICENSE("GPL");
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