summaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb/frontends/tda8261.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb/frontends/tda8261.c')
-rw-r--r--drivers/media/dvb/frontends/tda8261.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/drivers/media/dvb/frontends/tda8261.c b/drivers/media/dvb/frontends/tda8261.c
deleted file mode 100644
index 53c7d8f..0000000
--- a/drivers/media/dvb/frontends/tda8261.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- TDA8261 8PSK/QPSK tuner driver
- Copyright (C) Manu Abraham (abraham.manu@gmail.com)
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-
-#include "dvb_frontend.h"
-#include "tda8261.h"
-
-struct tda8261_state {
- struct dvb_frontend *fe;
- struct i2c_adapter *i2c;
- const struct tda8261_config *config;
-
- /* state cache */
- u32 frequency;
- u32 bandwidth;
-};
-
-static int tda8261_read(struct tda8261_state *state, u8 *buf)
-{
- const struct tda8261_config *config = state->config;
- int err = 0;
- struct i2c_msg msg = { .addr = config->addr, .flags = I2C_M_RD,.buf = buf, .len = 1 };
-
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1)
- printk("%s: read error, err=%d\n", __func__, err);
-
- return err;
-}
-
-static int tda8261_write(struct tda8261_state *state, u8 *buf)
-{
- const struct tda8261_config *config = state->config;
- int err = 0;
- struct i2c_msg msg = { .addr = config->addr, .flags = 0, .buf = buf, .len = 4 };
-
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1)
- printk("%s: write error, err=%d\n", __func__, err);
-
- return err;
-}
-
-static int tda8261_get_status(struct dvb_frontend *fe, u32 *status)
-{
- struct tda8261_state *state = fe->tuner_priv;
- u8 result = 0;
- int err = 0;
-
- *status = 0;
-
- if ((err = tda8261_read(state, &result)) < 0) {
- printk("%s: I/O Error\n", __func__);
- return err;
- }
- if ((result >> 6) & 0x01) {
- printk("%s: Tuner Phase Locked\n", __func__);
- *status = 1;
- }
-
- return err;
-}
-
-static const u32 div_tab[] = { 2000, 1000, 500, 250, 125 }; /* kHz */
-static const u8 ref_div[] = { 0x00, 0x01, 0x02, 0x05, 0x07 };
-
-static int tda8261_get_state(struct dvb_frontend *fe,
- enum tuner_param param,
- struct tuner_state *tstate)
-{
- struct tda8261_state *state = fe->tuner_priv;
- int err = 0;
-
- switch (param) {
- case DVBFE_TUNER_FREQUENCY:
- tstate->frequency = state->frequency;
- break;
- case DVBFE_TUNER_BANDWIDTH:
- tstate->bandwidth = 40000000; /* FIXME! need to calculate Bandwidth */
- break;
- default:
- printk("%s: Unknown parameter (param=%d)\n", __func__, param);
- err = -EINVAL;
- break;
- }
-
- return err;
-}
-
-static int tda8261_set_state(struct dvb_frontend *fe,
- enum tuner_param param,
- struct tuner_state *tstate)
-{
- struct tda8261_state *state = fe->tuner_priv;
- const struct tda8261_config *config = state->config;
- u32 frequency, N, status = 0;
- u8 buf[4];
- int err = 0;
-
- if (param & DVBFE_TUNER_FREQUENCY) {
- /**
- * N = Max VCO Frequency / Channel Spacing
- * Max VCO Frequency = VCO frequency + (channel spacing - 1)
- * (to account for half channel spacing on either side)
- */
- frequency = tstate->frequency;
- if ((frequency < 950000) || (frequency > 2150000)) {
- printk("%s: Frequency beyond limits, frequency=%d\n", __func__, frequency);
- return -EINVAL;
- }
- N = (frequency + (div_tab[config->step_size] - 1)) / div_tab[config->step_size];
- printk("%s: Step size=%d, Divider=%d, PG=0x%02x (%d)\n",
- __func__, config->step_size, div_tab[config->step_size], N, N);
-
- buf[0] = (N >> 8) & 0xff;
- buf[1] = N & 0xff;
- buf[2] = (0x01 << 7) | ((ref_div[config->step_size] & 0x07) << 1);
-
- if (frequency < 1450000)
- buf[3] = 0x00;
- else if (frequency < 2000000)
- buf[3] = 0x40;
- else if (frequency < 2150000)
- buf[3] = 0x80;
-
- /* Set params */
- if ((err = tda8261_write(state, buf)) < 0) {
- printk("%s: I/O Error\n", __func__);
- return err;
- }
- /* sleep for some time */
- printk("%s: Waiting to Phase LOCK\n", __func__);
- msleep(20);
- /* check status */
- if ((err = tda8261_get_status(fe, &status)) < 0) {
- printk("%s: I/O Error\n", __func__);
- return err;
- }
- if (status == 1) {
- printk("%s: Tuner Phase locked: status=%d\n", __func__, status);
- state->frequency = frequency; /* cache successful state */
- } else {
- printk("%s: No Phase lock: status=%d\n", __func__, status);
- }
- } else {
- printk("%s: Unknown parameter (param=%d)\n", __func__, param);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int tda8261_release(struct dvb_frontend *fe)
-{
- struct tda8261_state *state = fe->tuner_priv;
-
- fe->tuner_priv = NULL;
- kfree(state);
- return 0;
-}
-
-static struct dvb_tuner_ops tda8261_ops = {
-
- .info = {
- .name = "TDA8261",
-// .tuner_name = NULL,
- .frequency_min = 950000,
- .frequency_max = 2150000,
- .frequency_step = 0
- },
-
- .set_state = tda8261_set_state,
- .get_state = tda8261_get_state,
- .get_status = tda8261_get_status,
- .release = tda8261_release
-};
-
-struct dvb_frontend *tda8261_attach(struct dvb_frontend *fe,
- const struct tda8261_config *config,
- struct i2c_adapter *i2c)
-{
- struct tda8261_state *state = NULL;
-
- if ((state = kzalloc(sizeof (struct tda8261_state), GFP_KERNEL)) == NULL)
- goto exit;
-
- state->config = config;
- state->i2c = i2c;
- state->fe = fe;
- fe->tuner_priv = state;
- fe->ops.tuner_ops = tda8261_ops;
-
- fe->ops.tuner_ops.info.frequency_step = div_tab[config->step_size];
-// fe->ops.tuner_ops.tuner_name = &config->buf;
-
-// printk("%s: Attaching %s TDA8261 8PSK/QPSK tuner\n",
-// __func__, fe->ops.tuner_ops.tuner_name);
- printk("%s: Attaching TDA8261 8PSK/QPSK tuner\n", __func__);
-
- return fe;
-
-exit:
- kfree(state);
- return NULL;
-}
-
-EXPORT_SYMBOL(tda8261_attach);
-
-MODULE_AUTHOR("Manu Abraham");
-MODULE_DESCRIPTION("TDA8261 8PSK/QPSK Tuner");
-MODULE_LICENSE("GPL");
OpenPOWER on IntegriCloud