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/*
* tcbd_drv_rf.c
*
* Author: <linux@telechips.com>
* Description: Telechips broadcast driver
*
* Copyright (c) Telechips, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "tcpal_os.h"
#include "tcbd_feature.h"
#include "tcpal_debug.h"
#include "tcbd_api_common.h"
#include "tcbd_drv_ip.h"
#include "tcbd_drv_io.h"
#include "tcbd_drv_rf.h"
struct tcbd_rf_data {
u8 addr;
u32 data;
};
static struct tcbd_rf_data tcc3170_rf_table_band3[] = {
{0x02, 0x00030000},
{0x04, 0x00002002},
{0x05, 0x5500640B},
{0x06, 0x1AADA754},
{0x07, 0x00002000},
{0x08, 0x42222249},
{0x09, 0x000D2299},
{0x0A, 0xD87060DD},
{0x0B, 0x00000E72},
{0x0C, 0x02AE7077},
{0x0D, 0x00240376},
{0x0E, 0X7F7F0711}
};
static struct tcbd_rf_data tcc3170_rf_table_lband[] = {
{0x02, 0x00030000},
{0x04, 0x00004001},
{0x06, 0x0AADA754},
{0x07, 0x00002000},
{0x08, 0x42222249},
{0x09, 0x000D2299},
{0x0A, 0xD87060DD},
{0x0B, 0x00000E72},
{0x0C, 0x02AE7077},
{0x0D, 0x00240376},
{0x0E, 0X7F7F0907}
};
static u64 tcbd_div64(u64 x, u64 y)
{
u64 a, b, q, counter;
q = 0;
if (y != 0) {
while (x >= y) {
a = x >> 1;
b = y;
counter = 1;
while (a >= b) {
b <<= 1;
counter <<= 1;
}
x -= b;
q += counter;
}
}
return q;
}
s32 tcbd_rf_init(struct tcbd_device *_device, enum tcbd_band_type _band)
{
s32 i = 0;
s32 size;
s32 ret = 0;
struct tcbd_rf_data *rf_data;
switch (_band) {
case BAND_TYPE_BAND3:
size = ARRAY_SIZE(tcc3170_rf_table_band3);
rf_data = tcc3170_rf_table_band3;
break;
case BAND_TYPE_LBAND:
size = ARRAY_SIZE(tcc3170_rf_table_lband);
rf_data = tcc3170_rf_table_lband;
break;
default:
return -TCERR_UNKNOWN_BAND;
break;
}
for (i = 0; i < size; i++)
ret |= tcbd_rf_reg_write(
_device, rf_data[i].addr, rf_data[i].data);
return ret;
}
#define SCALE_FACTOR 22
#define DIV(A, B) (tcbd_div64((A<<SCALE_FACTOR), B))
static inline s32 tcbd_rf_set_frequency(
struct tcbd_device *_device, s32 _freq_khz, s32 _bw_khz)
{
s32 ret = 0;
u64 N, F;
u64 Flo, VCO_DIV, FOffset, Fvco, FR, PLL_MODE;
u64 N_int, intF, intVCO_DIV;
u64 osc_clock, fpfd, f_freq_khz;
u64 Temp1, Temp2;
u32 DIV_MODE;
s32 RST_PLL = 1, band = 0;
u32 rf_cfg2 = 0, rf_cfg4 = 0;
FOffset = 0;
/* l-band */
if (_freq_khz > 1000000)
band = 1;
if (band == 0) {
/* band III */
ret |= tcbd_rf_reg_write(_device, 0x04, 0x00002002);
ret |= tcbd_rf_reg_write(_device, 0x0e, 0x7F7F0711);
} else {
/* LBAND */
ret |= tcbd_rf_reg_write(_device, 0x04, 0x00004001);
ret |= tcbd_rf_reg_write(_device, 0x0e, 0x7F7F0907);
}
ret |= tcbd_rf_reg_read(_device, 0x06, (u32 *)&rf_cfg2);
if (((rf_cfg2 >> 28) & 0x01) == 0)
FR = 0;
else
FR = 1;
if (((rf_cfg2 >> 31) & 0x01) == 0)
PLL_MODE = 2;
else
PLL_MODE = 4;
osc_clock = tcbd_get_osc_clock(_device);
f_freq_khz = _freq_khz;
/* Calculate PLL */
if (f_freq_khz < 250000) {
/* VHF */
DIV_MODE = 0x00;
fpfd = osc_clock >> FR;
VCO_DIV = 16;
Flo = f_freq_khz - FOffset;
Fvco = Flo * VCO_DIV;
Temp1 = Fvco << FR;
Temp2 = PLL_MODE * osc_clock;
N = DIV(Temp1, Temp2);
N_int = (N >> SCALE_FACTOR) << SCALE_FACTOR;
F = ((N - N_int) * (2 << 21)) >> SCALE_FACTOR;
if (N_int < (19 << SCALE_FACTOR)) {
FR = 1;
fpfd = osc_clock >> FR;
VCO_DIV = 16;
Flo = f_freq_khz - FOffset;
Fvco = Flo * VCO_DIV;
Temp1 = Fvco * FR;
Temp2 = PLL_MODE * osc_clock;
N = DIV(Temp1, Temp2);
N_int = (N >> SCALE_FACTOR) << SCALE_FACTOR;
F = ((N - N_int) * (2 << 21)) >> SCALE_FACTOR;
}
intF = F;
intVCO_DIV = VCO_DIV;
} else {
/* LBAND */
DIV_MODE = 0x01;
fpfd = osc_clock >> FR;
VCO_DIV = 2;
Flo = f_freq_khz - FOffset;
Fvco = Flo * VCO_DIV;
Temp1 = Fvco << FR;
Temp2 = PLL_MODE * osc_clock;
N = DIV(Temp1, Temp2);
N_int = (N >> SCALE_FACTOR) << SCALE_FACTOR;
F = ((N - N_int) * (2 << 21)) >> SCALE_FACTOR;
if (N_int < (19 << SCALE_FACTOR)) {
FR = 1;
VCO_DIV = 2;
Flo = f_freq_khz - FOffset;
Fvco = Flo * VCO_DIV;
Temp1 = Fvco << FR;
Temp2 = PLL_MODE * osc_clock;
N = DIV(Temp1, Temp2);
N_int = (N >> SCALE_FACTOR) << SCALE_FACTOR;
F = ((N - N_int) * (2<<21)) >> SCALE_FACTOR;
}
intF = F;
intVCO_DIV = VCO_DIV;
}
rf_cfg4 = (u32)((N_int >> SCALE_FACTOR) & 0xFF) ;
rf_cfg4 |= ((intF & 0x3FFFFF) << 8);
rf_cfg4 |= ((RST_PLL & 0x01) << 30);
rf_cfg4 |= ((DIV_MODE & 0x01) << 31);
ret |= tcbd_rf_reg_write(_device, 0x08, rf_cfg4);
ret |= tcbd_rf_reg_read(_device, 0x06, (u32 *)&rf_cfg2);
if (FR == 0)
BITCLR(rf_cfg2, Bit28);
else
BITSET(rf_cfg2, Bit28);
ret |= tcbd_rf_reg_write(_device, 0x06, rf_cfg2);
return ret;
}
s32 tcbd_rf_tune_frequency(
struct tcbd_device *_device, u32 _freq_khz, s32 _bw_khz)
{
s32 ret = 0;
if (_device->curr_band != _device->prev_band)
ret |= tcbd_rf_init(_device, _device->curr_band);
ret |= tcbd_rf_set_frequency(_device, _freq_khz, _bw_khz);
if (ret < 0)
tcbd_debug(DEBUG_ERROR,
"Failed to set frequency to RF, err:%d\n", ret);
return ret;
}
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