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author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-13 23:13:41 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-13 23:13:41 -0300 |
commit | 9a0bf528b4d66b605f02634236da085595c22101 (patch) | |
tree | e9ff008ff15c3ee5add6d41173ee5e61939480dd /drivers/media/dvb/frontends/tda8261.c | |
parent | 3d6c2bc08ac4f75bf3597740357c98f2207ca412 (diff) | |
download | linux-9a0bf528b4d66b605f02634236da085595c22101.tar.gz |
[media] move the dvb/frontends to drivers/media/dvb-frontends
Raise the DVB frontends one level up, as the intention is to remove
the drivers/media/dvb directory.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends/tda8261.c')
-rw-r--r-- | drivers/media/dvb/frontends/tda8261.c | 230 |
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 53c7d8f1df28..000000000000 --- 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"); |