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path: root/drivers/media/dvb/frontends/dvb-pll.c
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Diffstat (limited to 'drivers/media/dvb/frontends/dvb-pll.c')
-rw-r--r--drivers/media/dvb/frontends/dvb-pll.c181
1 files changed, 176 insertions, 5 deletions
diff --git a/drivers/media/dvb/frontends/dvb-pll.c b/drivers/media/dvb/frontends/dvb-pll.c
index 791706ec1da3..a189683454b7 100644
--- a/drivers/media/dvb/frontends/dvb-pll.c
+++ b/drivers/media/dvb/frontends/dvb-pll.c
@@ -227,10 +227,10 @@ struct dvb_pll_desc dvb_pll_tua6034 = {
EXPORT_SYMBOL(dvb_pll_tua6034);
/* Infineon TUA6034
- * used in LG TDVS H061F and LG TDVS H062F
+ * used in LG TDVS-H061F, LG TDVS-H062F and LG TDVS-H064F
*/
-struct dvb_pll_desc dvb_pll_tdvs_tua6034 = {
- .name = "LG/Infineon TUA6034",
+struct dvb_pll_desc dvb_pll_lg_tdvs_h06xf = {
+ .name = "LG TDVS-H06xF",
.min = 54000000,
.max = 863000000,
.count = 3,
@@ -240,7 +240,7 @@ struct dvb_pll_desc dvb_pll_tdvs_tua6034 = {
{ 999999999, 44000000, 62500, 0xce, 0x04 },
},
};
-EXPORT_SYMBOL(dvb_pll_tdvs_tua6034);
+EXPORT_SYMBOL(dvb_pll_lg_tdvs_h06xf);
/* Philips FMD1216ME
* used in Medion Hybrid PCMCIA card and USB Box
@@ -419,6 +419,19 @@ struct dvb_pll_desc dvb_pll_thomson_fe6600 = {
};
EXPORT_SYMBOL(dvb_pll_thomson_fe6600);
+struct dvb_pll_priv {
+ /* i2c details */
+ int pll_i2c_address;
+ struct i2c_adapter *i2c;
+
+ /* the PLL descriptor */
+ struct dvb_pll_desc *pll_desc;
+
+ /* cached frequency/bandwidth */
+ u32 frequency;
+ u32 bandwidth;
+};
+
/* ----------------------------------------------------------- */
/* code */
@@ -443,7 +456,8 @@ int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
if (debug)
printk("pll: %s: freq=%d bw=%d | i=%d/%d\n",
desc->name, freq, bandwidth, i, desc->count);
- BUG_ON(i == desc->count);
+ if (i == desc->count)
+ return -EINVAL;
div = (freq + desc->entries[i].offset) / desc->entries[i].stepsize;
buf[0] = div >> 8;
@@ -462,6 +476,163 @@ int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
}
EXPORT_SYMBOL(dvb_pll_configure);
+static int dvb_pll_release(struct dvb_frontend *fe)
+{
+ if (fe->tuner_priv)
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static int dvb_pll_sleep(struct dvb_frontend *fe)
+{
+ struct dvb_pll_priv *priv = fe->tuner_priv;
+ u8 buf[4];
+ struct i2c_msg msg =
+ { .addr = priv->pll_i2c_address, .flags = 0, .buf = buf, .len = sizeof(buf) };
+ int i;
+ int result;
+
+ for (i = 0; i < priv->pll_desc->count; i++) {
+ if (priv->pll_desc->entries[i].limit == 0)
+ break;
+ }
+ if (i == priv->pll_desc->count)
+ return 0;
+
+ buf[0] = 0;
+ buf[1] = 0;
+ buf[2] = priv->pll_desc->entries[i].config;
+ buf[3] = priv->pll_desc->entries[i].cb;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
+ return result;
+ }
+
+ return 0;
+}
+
+static int dvb_pll_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
+{
+ struct dvb_pll_priv *priv = fe->tuner_priv;
+ u8 buf[4];
+ struct i2c_msg msg =
+ { .addr = priv->pll_i2c_address, .flags = 0, .buf = buf, .len = sizeof(buf) };
+ int result;
+ u32 div;
+ int i;
+ u32 bandwidth = 0;
+
+ if (priv->i2c == NULL)
+ return -EINVAL;
+
+ // DVBT bandwidth only just now
+ if (fe->ops.info.type == FE_OFDM) {
+ bandwidth = params->u.ofdm.bandwidth;
+ }
+
+ if ((result = dvb_pll_configure(priv->pll_desc, buf, params->frequency, bandwidth)) != 0)
+ return result;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
+ return result;
+ }
+
+ // calculate the frequency we set it to
+ for (i = 0; i < priv->pll_desc->count; i++) {
+ if (params->frequency > priv->pll_desc->entries[i].limit)
+ continue;
+ break;
+ }
+ div = (params->frequency + priv->pll_desc->entries[i].offset) / priv->pll_desc->entries[i].stepsize;
+ priv->frequency = (div * priv->pll_desc->entries[i].stepsize) - priv->pll_desc->entries[i].offset;
+ priv->bandwidth = bandwidth;
+
+ return 0;
+}
+
+static int dvb_pll_calc_regs(struct dvb_frontend *fe, struct dvb_frontend_parameters *params, u8 *buf, int buf_len)
+{
+ struct dvb_pll_priv *priv = fe->tuner_priv;
+ int result;
+ u32 div;
+ int i;
+ u32 bandwidth = 0;
+
+ if (buf_len < 5)
+ return -EINVAL;
+
+ // DVBT bandwidth only just now
+ if (fe->ops.info.type == FE_OFDM) {
+ bandwidth = params->u.ofdm.bandwidth;
+ }
+
+ if ((result = dvb_pll_configure(priv->pll_desc, buf+1, params->frequency, bandwidth)) != 0)
+ return result;
+ buf[0] = priv->pll_i2c_address;
+
+ // calculate the frequency we set it to
+ for (i = 0; i < priv->pll_desc->count; i++) {
+ if (params->frequency > priv->pll_desc->entries[i].limit)
+ continue;
+ break;
+ }
+ div = (params->frequency + priv->pll_desc->entries[i].offset) / priv->pll_desc->entries[i].stepsize;
+ priv->frequency = (div * priv->pll_desc->entries[i].stepsize) - priv->pll_desc->entries[i].offset;
+ priv->bandwidth = bandwidth;
+
+ return 5;
+}
+
+static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct dvb_pll_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ struct dvb_pll_priv *priv = fe->tuner_priv;
+ *bandwidth = priv->bandwidth;
+ return 0;
+}
+
+static struct dvb_tuner_ops dvb_pll_tuner_ops = {
+ .release = dvb_pll_release,
+ .sleep = dvb_pll_sleep,
+ .set_params = dvb_pll_set_params,
+ .calc_regs = dvb_pll_calc_regs,
+ .get_frequency = dvb_pll_get_frequency,
+ .get_bandwidth = dvb_pll_get_bandwidth,
+};
+
+int dvb_pll_attach(struct dvb_frontend *fe, int pll_addr, struct i2c_adapter *i2c, struct dvb_pll_desc *desc)
+{
+ struct dvb_pll_priv *priv = NULL;
+
+ priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return -ENOMEM;
+
+ priv->pll_i2c_address = pll_addr;
+ priv->i2c = i2c;
+ priv->pll_desc = desc;
+
+ memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops, sizeof(struct dvb_tuner_ops));
+ strncpy(fe->ops.tuner_ops.info.name, desc->name, 128);
+ fe->ops.tuner_ops.info.frequency_min = desc->min;
+ fe->ops.tuner_ops.info.frequency_min = desc->max;
+
+ fe->tuner_priv = priv;
+ return 0;
+}
+EXPORT_SYMBOL(dvb_pll_attach);
+
MODULE_DESCRIPTION("dvb pll library");
MODULE_AUTHOR("Gerd Knorr");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-24 10:36:12 +0000