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authorSteven Toth <stoth@linuxtv.org>2009-05-02 11:07:29 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-06-16 18:20:53 -0300
commitd114153816ec188b20a37583e66da33d8b2798fe (patch)
treecdac5cbecdbfced7c9515b616623f9f8b5c080b7 /drivers/media/dvb/frontends
parent17720e07b6ac573c8929c39f9036dbc460867b72 (diff)
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>
Diffstat (limited to 'drivers/media/dvb/frontends')
-rw-r--r--drivers/media/dvb/frontends/tda10048.c219
-rw-r--r--drivers/media/dvb/frontends/tda10048.h14
2 files changed, 232 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/tda10048.c b/drivers/media/dvb/frontends/tda10048.c
index 2a8bbcd44cd..28f580f858c 100644
--- a/drivers/media/dvb/frontends/tda10048.c
+++ b/drivers/media/dvb/frontends/tda10048.c
@@ -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);
diff --git a/drivers/media/dvb/frontends/tda10048.h b/drivers/media/dvb/frontends/tda10048.h
index 0457b24601f..ab9cf5bd421 100644
--- a/drivers/media/dvb/frontends/tda10048.h
+++ b/drivers/media/dvb/frontends/tda10048.h
@@ -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) || \