mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-19 02:04:19 +08:00
V4L/DVB (11697): tda10048: Add ability to select I/F at attach time.
tda10048: Add ability to select I/F at attach time. Signed-off-by: Steven Toth <stoth@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Steven Toth
Mauro Carvalho Chehab
parent
17720e07b6
commit
d114153816
@ -25,6 +25,7 @@
|
||||
#include <linux/string.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/delay.h>
|
||||
#include <asm/div64.h>
|
||||
#include "dvb_frontend.h"
|
||||
#include "dvb_math.h"
|
||||
#include "tda10048.h"
|
||||
@ -143,6 +144,15 @@ struct tda10048_state {
|
||||
struct dvb_frontend frontend;
|
||||
|
||||
int fwloaded;
|
||||
|
||||
u32 freq_if_hz;
|
||||
u32 xtal_hz;
|
||||
u32 pll_mfactor;
|
||||
u32 pll_nfactor;
|
||||
u32 pll_pfactor;
|
||||
u32 sample_freq;
|
||||
|
||||
enum fe_bandwidth bandwidth;
|
||||
};
|
||||
|
||||
static struct init_tab {
|
||||
@ -271,6 +281,199 @@ error:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int tda10048_set_phy2(struct dvb_frontend *fe, u32 sample_freq_hz,
|
||||
u32 if_hz)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
u64 t;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
if (sample_freq_hz == 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (if_hz < (sample_freq_hz / 2)) {
|
||||
/* PHY2 = (if2/fs) * 2^15 */
|
||||
t = if_hz;
|
||||
t *= 10;
|
||||
t *= 32768;
|
||||
do_div(t, sample_freq_hz);
|
||||
t += 5;
|
||||
do_div(t, 10);
|
||||
} else {
|
||||
/* PHY2 = ((IF1-fs)/fs) * 2^15 */
|
||||
t = sample_freq_hz - if_hz;
|
||||
t *= 10;
|
||||
t *= 32768;
|
||||
do_div(t, sample_freq_hz);
|
||||
t += 5;
|
||||
do_div(t, 10);
|
||||
t = ~t + 1;
|
||||
}
|
||||
|
||||
tda10048_writereg(state, TDA10048_FREQ_PHY2_LSB, (u8)t);
|
||||
tda10048_writereg(state, TDA10048_FREQ_PHY2_MSB, (u8)(t >> 8));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
|
||||
u32 bw)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
u64 t, z;
|
||||
u32 b = 8000000;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
if (sample_freq_hz == 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (bw == BANDWIDTH_6_MHZ)
|
||||
b = 6000000;
|
||||
else
|
||||
if (bw == BANDWIDTH_7_MHZ)
|
||||
b = 7000000;
|
||||
|
||||
/* WREF = (B / (7 * fs)) * 2^31 */
|
||||
t = b * 10;
|
||||
/* avoid warning: this decimal constant is unsigned only in ISO C90 */
|
||||
/* t *= 2147483648 on 32bit platforms */
|
||||
t *= (2048 * 1024);
|
||||
t *= 1024;
|
||||
z = 7 * sample_freq_hz;
|
||||
do_div(t, z);
|
||||
t += 5;
|
||||
do_div(t, 10);
|
||||
|
||||
tda10048_writereg(state, TDA10048_TIME_WREF_LSB, (u8)t);
|
||||
tda10048_writereg(state, TDA10048_TIME_WREF_MID1, (u8)(t >> 8));
|
||||
tda10048_writereg(state, TDA10048_TIME_WREF_MID2, (u8)(t >> 16));
|
||||
tda10048_writereg(state, TDA10048_TIME_WREF_MSB, (u8)(t >> 24));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_set_invwref(struct dvb_frontend *fe, u32 sample_freq_hz,
|
||||
u32 bw)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
u64 t;
|
||||
u32 b = 8000000;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
if (sample_freq_hz == 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (bw == BANDWIDTH_6_MHZ)
|
||||
b = 6000000;
|
||||
else
|
||||
if (bw == BANDWIDTH_7_MHZ)
|
||||
b = 7000000;
|
||||
|
||||
/* INVWREF = ((7 * fs) / B) * 2^5 */
|
||||
t = sample_freq_hz;
|
||||
t *= 7;
|
||||
t *= 32;
|
||||
t *= 10;
|
||||
do_div(t, b);
|
||||
t += 5;
|
||||
do_div(t, 10);
|
||||
|
||||
tda10048_writereg(state, TDA10048_TIME_INVWREF_LSB, (u8)t);
|
||||
tda10048_writereg(state, TDA10048_TIME_INVWREF_MSB, (u8)(t >> 8));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_set_bandwidth(struct dvb_frontend *fe,
|
||||
enum fe_bandwidth bw)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
dprintk(1, "%s(bw=%d)\n", __func__, bw);
|
||||
|
||||
/* Bandwidth setting may need to be adjusted */
|
||||
switch (bw) {
|
||||
case BANDWIDTH_6_MHZ:
|
||||
case BANDWIDTH_7_MHZ:
|
||||
case BANDWIDTH_8_MHZ:
|
||||
tda10048_set_wref(fe, state->sample_freq, bw);
|
||||
tda10048_set_invwref(fe, state->sample_freq, bw);
|
||||
break;
|
||||
default:
|
||||
printk(KERN_ERR "%s() invalid bandwidth\n", __func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
state->bandwidth = bw;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_set_pll(struct dvb_frontend *fe)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
int ret = 0;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
if ((state->config->clk_freq_khz == TDA10048_CLK_4000) &&
|
||||
(state->config->if_freq_khz == TDA10048_IF_36130)) {
|
||||
state->freq_if_hz = TDA10048_IF_36130 * 1000;
|
||||
state->xtal_hz = TDA10048_CLK_4000 * 1000;
|
||||
state->pll_mfactor = 10;
|
||||
state->pll_nfactor = 0;
|
||||
state->pll_pfactor = 0;
|
||||
} else
|
||||
if ((state->config->clk_freq_khz == TDA10048_CLK_16000) &&
|
||||
(state->config->if_freq_khz == TDA10048_IF_4300)) {
|
||||
state->freq_if_hz = TDA10048_IF_4300 * 1000;
|
||||
state->xtal_hz = TDA10048_CLK_16000 * 1000;
|
||||
state->pll_mfactor = 10;
|
||||
state->pll_nfactor = 3;
|
||||
state->pll_pfactor = 0;
|
||||
} else
|
||||
if ((state->config->clk_freq_khz == TDA10048_CLK_16000) &&
|
||||
(state->config->if_freq_khz == TDA10048_IF_4000)) {
|
||||
state->freq_if_hz = TDA10048_IF_4000 * 1000;
|
||||
state->xtal_hz = TDA10048_CLK_16000 * 1000;
|
||||
state->pll_mfactor = 10;
|
||||
state->pll_nfactor = 3;
|
||||
state->pll_pfactor = 0;
|
||||
} else
|
||||
if ((state->config->clk_freq_khz == TDA10048_CLK_16000) &&
|
||||
(state->config->if_freq_khz == TDA10048_IF_36130)) {
|
||||
state->freq_if_hz = TDA10048_IF_36130 * 1000;
|
||||
state->xtal_hz = TDA10048_CLK_16000 * 1000;
|
||||
state->pll_mfactor = 10;
|
||||
state->pll_nfactor = 3;
|
||||
state->pll_pfactor = 0;
|
||||
} else {
|
||||
printk(KERN_ERR "%s() Incorrect attach settings\n", __func__);
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
dprintk(1, "- freq_if_hz = %d\n", state->freq_if_hz);
|
||||
dprintk(1, "- xtal_hz = %d\n", state->xtal_hz);
|
||||
dprintk(1, "- pll_mfactor = %d\n", state->pll_mfactor);
|
||||
dprintk(1, "- pll_nfactor = %d\n", state->pll_nfactor);
|
||||
dprintk(1, "- pll_pfactor = %d\n", state->pll_pfactor);
|
||||
|
||||
/* Calculate the sample frequency */
|
||||
state->sample_freq = state->xtal_hz * (state->pll_mfactor + 45);
|
||||
state->sample_freq /= (state->pll_nfactor + 1);
|
||||
state->sample_freq /= (state->pll_pfactor + 4);
|
||||
dprintk(1, "- sample_freq = %d\n", state->sample_freq);
|
||||
|
||||
tda10048_set_phy2(fe, state->sample_freq,
|
||||
state->config->if_freq_khz * 1000);
|
||||
tda10048_set_wref(fe, state->sample_freq, state->bandwidth);
|
||||
tda10048_set_invwref(fe, state->sample_freq, state->bandwidth);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int tda10048_firmware_upload(struct dvb_frontend *fe)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
@ -523,6 +726,9 @@ static int tda10048_set_frontend(struct dvb_frontend *fe,
|
||||
|
||||
dprintk(1, "%s(frequency=%d)\n", __func__, p->frequency);
|
||||
|
||||
if (p->u.ofdm.bandwidth != state->bandwidth)
|
||||
tda10048_set_bandwidth(fe, p->u.ofdm.bandwidth);
|
||||
|
||||
if (fe->ops.tuner_ops.set_params) {
|
||||
|
||||
if (fe->ops.i2c_gate_ctrl)
|
||||
@ -558,9 +764,15 @@ static int tda10048_init(struct dvb_frontend *fe)
|
||||
/* Set either serial or parallel */
|
||||
tda10048_output_mode(fe, state->config->output_mode);
|
||||
|
||||
/* set inversion */
|
||||
/* Set inversion */
|
||||
tda10048_set_inversion(fe, state->config->inversion);
|
||||
|
||||
/* Establish default PLL values */
|
||||
tda10048_set_pll(fe);
|
||||
|
||||
/* Establish default bandwidth */
|
||||
tda10048_set_bandwidth(fe, BANDWIDTH_8_MHZ);
|
||||
|
||||
/* Ensure we leave the gate closed */
|
||||
tda10048_i2c_gate_ctrl(fe, 0);
|
||||
|
||||
@ -830,6 +1042,7 @@ struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
|
||||
state->config = config;
|
||||
state->i2c = i2c;
|
||||
state->fwloaded = 0;
|
||||
state->bandwidth = BANDWIDTH_8_MHZ;
|
||||
|
||||
/* check if the demod is present */
|
||||
if (tda10048_readreg(state, TDA10048_IDENTITY) != 0x048)
|
||||
@ -840,6 +1053,10 @@ struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
|
||||
sizeof(struct dvb_frontend_ops));
|
||||
state->frontend.demodulator_priv = state;
|
||||
|
||||
/* Set the xtal and freq defaults */
|
||||
if (tda10048_set_pll(&state->frontend) != 0)
|
||||
goto error;
|
||||
|
||||
/* Leave the gate closed */
|
||||
tda10048_i2c_gate_ctrl(&state->frontend, 0);
|
||||
|
||||
|
||||
@ -43,6 +43,20 @@ struct tda10048_config {
|
||||
#define TDA10048_INVERSION_OFF 0
|
||||
#define TDA10048_INVERSION_ON 1
|
||||
u8 inversion;
|
||||
|
||||
#define TDA10048_IF_3300 3300
|
||||
#define TDA10048_IF_3500 3500
|
||||
#define TDA10048_IF_3800 3800
|
||||
#define TDA10048_IF_4000 4000
|
||||
#define TDA10048_IF_4300 4300
|
||||
#define TDA10048_IF_4500 4500
|
||||
#define TDA10048_IF_4750 4750
|
||||
#define TDA10048_IF_36130 36130
|
||||
u16 if_freq_khz;
|
||||
|
||||
#define TDA10048_CLK_4000 4000
|
||||
#define TDA10048_CLK_16000 16000
|
||||
u16 clk_freq_khz;
|
||||
};
|
||||
|
||||
#if defined(CONFIG_DVB_TDA10048) || \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user