LXR linux/drivers/media/dvb-frontends/stb6100

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3        STB6100 Silicon Tuner
   4        Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   5
   6        Copyright (C) ST Microelectronics
   7
   8*/
   9
  10#include <linux/dvb/frontend.h>
  11#include <media/dvb_frontend.h>
  12
  13static int stb6100_get_frequency(struct dvb_frontend *fe, u32 *frequency)
  14{
  15        struct dvb_frontend_ops *frontend_ops = &fe->ops;
  16        struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  17        int err = 0;
  18
  19        if (tuner_ops->get_frequency) {
  20                err = tuner_ops->get_frequency(fe, frequency);
  21                if (err < 0) {
  22                        printk("%s: Invalid parameter\n", __func__);
  23                        return err;
  24                }
  25        }
  26        return 0;
  27}
  28
  29static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
  30{
  31        struct dvb_frontend_ops *frontend_ops = &fe->ops;
  32        struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  33        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  34        u32 bw = c->bandwidth_hz;
  35        int err = 0;
  36
  37        c->frequency = frequency;
  38        c->bandwidth_hz = 0;            /* Don't adjust the bandwidth */
  39
  40        if (tuner_ops->set_params) {
  41                err = tuner_ops->set_params(fe);
  42                c->bandwidth_hz = bw;
  43                if (err < 0) {
  44                        printk("%s: Invalid parameter\n", __func__);
  45                        return err;
  46                }
  47        }
  48        return 0;
  49}
  50
  51static int stb6100_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
  52{
  53        struct dvb_frontend_ops *frontend_ops = &fe->ops;
  54        struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  55        int err = 0;
  56
  57        if (tuner_ops->get_bandwidth) {
  58                err = tuner_ops->get_bandwidth(fe, bandwidth);
  59                if (err < 0) {
  60                        printk("%s: Invalid parameter\n", __func__);
  61                        return err;
  62                }
  63        }
  64        return 0;
  65}
  66
  67static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
  68{
  69        struct dvb_frontend_ops *frontend_ops = &fe->ops;
  70        struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  71        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  72        u32 freq = c->frequency;
  73        int err = 0;
  74
  75        c->bandwidth_hz = bandwidth;
  76        c->frequency = 0;               /* Don't adjust the frequency */
  77
  78        if (tuner_ops->set_params) {
  79                err = tuner_ops->set_params(fe);
  80                c->frequency = freq;
  81                if (err < 0) {
  82                        printk("%s: Invalid parameter\n", __func__);
  83                        return err;
  84                }
  85        }
  86        return 0;
  87}
  88