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authorMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-11-11 17:33:59 -0200
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-11-17 06:42:32 -0200
commit8e6c4be3f8f7889b0806d0635c7b85a6328d77ed (patch)
tree91617082dc4f445736546f7244564a788b8d5d04 /drivers/media/dvb-frontends
parentcffdbfe7cf9c7201d4d6c3a0c6b224497595431a (diff)
[media] tda665x: split set_frequency from set_state
On tda665x, set_state only sets frequency. As the kABI for set_state is meant to be used only on special cases, split the function into two, in order to allow it to be latter used by a DVBv5 cache params logic. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends')
-rw-r--r--drivers/media/dvb-frontends/tda665x.c161
1 files changed, 85 insertions, 76 deletions
diff --git a/drivers/media/dvb-frontends/tda665x.c b/drivers/media/dvb-frontends/tda665x.c
index 63cc12378d9a..9c892533e6a7 100644
--- a/drivers/media/dvb-frontends/tda665x.c
+++ b/drivers/media/dvb-frontends/tda665x.c
@@ -111,9 +111,8 @@ exit:
return err;
}
-static int tda665x_set_state(struct dvb_frontend *fe,
- enum tuner_param param,
- struct tuner_state *tstate)
+static int tda665x_set_frequency(struct dvb_frontend *fe,
+ u32 new_frequency)
{
struct tda665x_state *state = fe->tuner_priv;
const struct tda665x_config *config = state->config;
@@ -121,88 +120,98 @@ static int tda665x_set_state(struct dvb_frontend *fe,
u8 buf[4];
int err = 0;
- if (param & DVBFE_TUNER_FREQUENCY) {
-
- frequency = tstate->frequency;
- if ((frequency < config->frequency_max) || (frequency > config->frequency_min)) {
- printk(KERN_ERR "%s: Frequency beyond limits, frequency=%d\n", __func__, frequency);
- return -EINVAL;
- }
-
- frequency += config->frequency_offst;
- frequency *= config->ref_multiplier;
- frequency += config->ref_divider >> 1;
- frequency /= config->ref_divider;
-
- buf[0] = (u8) ((frequency & 0x7f00) >> 8);
- buf[1] = (u8) (frequency & 0x00ff) >> 0;
- buf[2] = 0x80 | 0x40 | 0x02;
- buf[3] = 0x00;
-
- /* restore frequency */
- frequency = tstate->frequency;
-
- if (frequency < 153000000) {
- /* VHF-L */
- buf[3] |= 0x01; /* fc, Low Band, 47 - 153 MHz */
- if (frequency < 68000000)
- buf[3] |= 0x40; /* 83uA */
- if (frequency < 1040000000)
- buf[3] |= 0x60; /* 122uA */
- if (frequency < 1250000000)
- buf[3] |= 0x80; /* 163uA */
- else
- buf[3] |= 0xa0; /* 254uA */
- } else if (frequency < 438000000) {
- /* VHF-H */
- buf[3] |= 0x02; /* fc, Mid Band, 153 - 438 MHz */
- if (frequency < 230000000)
- buf[3] |= 0x40;
- if (frequency < 300000000)
- buf[3] |= 0x60;
- else
- buf[3] |= 0x80;
- } else {
- /* UHF */
- buf[3] |= 0x04; /* fc, High Band, 438 - 862 MHz */
- if (frequency < 470000000)
- buf[3] |= 0x60;
- if (frequency < 526000000)
- buf[3] |= 0x80;
- else
- buf[3] |= 0xa0;
- }
-
- /* Set params */
- err = tda665x_write(state, buf, 5);
- if (err < 0)
- goto exit;
-
- /* sleep for some time */
- printk(KERN_DEBUG "%s: Waiting to Phase LOCK\n", __func__);
- msleep(20);
- /* check status */
- err = tda665x_get_status(fe, &status);
- if (err < 0)
- goto exit;
-
- if (status == 1) {
- printk(KERN_DEBUG "%s: Tuner Phase locked: status=%d\n", __func__, status);
- state->frequency = frequency; /* cache successful state */
- } else {
- printk(KERN_ERR "%s: No Phase lock: status=%d\n", __func__, status);
- }
- } else {
- printk(KERN_ERR "%s: Unknown parameter (param=%d)\n", __func__, param);
+ if ((new_frequency < config->frequency_max)
+ || (new_frequency > config->frequency_min)) {
+ printk(KERN_ERR "%s: Frequency beyond limits, frequency=%d\n",
+ __func__, new_frequency);
return -EINVAL;
}
+ frequency = new_frequency;
+
+ frequency += config->frequency_offst;
+ frequency *= config->ref_multiplier;
+ frequency += config->ref_divider >> 1;
+ frequency /= config->ref_divider;
+
+ buf[0] = (u8) ((frequency & 0x7f00) >> 8);
+ buf[1] = (u8) (frequency & 0x00ff) >> 0;
+ buf[2] = 0x80 | 0x40 | 0x02;
+ buf[3] = 0x00;
+
+ /* restore frequency */
+ frequency = new_frequency;
+
+ if (frequency < 153000000) {
+ /* VHF-L */
+ buf[3] |= 0x01; /* fc, Low Band, 47 - 153 MHz */
+ if (frequency < 68000000)
+ buf[3] |= 0x40; /* 83uA */
+ if (frequency < 1040000000)
+ buf[3] |= 0x60; /* 122uA */
+ if (frequency < 1250000000)
+ buf[3] |= 0x80; /* 163uA */
+ else
+ buf[3] |= 0xa0; /* 254uA */
+ } else if (frequency < 438000000) {
+ /* VHF-H */
+ buf[3] |= 0x02; /* fc, Mid Band, 153 - 438 MHz */
+ if (frequency < 230000000)
+ buf[3] |= 0x40;
+ if (frequency < 300000000)
+ buf[3] |= 0x60;
+ else
+ buf[3] |= 0x80;
+ } else {
+ /* UHF */
+ buf[3] |= 0x04; /* fc, High Band, 438 - 862 MHz */
+ if (frequency < 470000000)
+ buf[3] |= 0x60;
+ if (frequency < 526000000)
+ buf[3] |= 0x80;
+ else
+ buf[3] |= 0xa0;
+ }
+
+ /* Set params */
+ err = tda665x_write(state, buf, 5);
+ if (err < 0)
+ goto exit;
+
+ /* sleep for some time */
+ printk(KERN_DEBUG "%s: Waiting to Phase LOCK\n", __func__);
+ msleep(20);
+ /* check status */
+ err = tda665x_get_status(fe, &status);
+ if (err < 0)
+ goto exit;
+
+ if (status == 1) {
+ printk(KERN_DEBUG "%s: Tuner Phase locked: status=%d\n",
+ __func__, status);
+ state->frequency = frequency; /* cache successful state */
+ } else {
+ printk(KERN_ERR "%s: No Phase lock: status=%d\n",
+ __func__, status);
+ }
+
return 0;
exit:
printk(KERN_ERR "%s: I/O Error\n", __func__);
return err;
}
+static int tda665x_set_state(struct dvb_frontend *fe,
+ enum tuner_param param,
+ struct tuner_state *tstate)
+{
+ if (param & DVBFE_TUNER_FREQUENCY)
+ return tda665x_set_frequency(fe, tstate->frequency);
+
+ printk(KERN_ERR "%s: Unknown parameter (param=%d)\n", __func__, param);
+ return -EINVAL;
+}
+
static int tda665x_release(struct dvb_frontend *fe)
{
struct tda665x_state *state = fe->tuner_priv;

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