diff options
Diffstat (limited to 'drivers/media/dvb-frontends/ds3000.c')
| -rw-r--r-- | drivers/media/dvb-frontends/ds3000.c | 116 |
1 files changed, 56 insertions, 60 deletions
diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c index 1e344b033277..515aa7c7baf2 100644 --- a/drivers/media/dvb-frontends/ds3000.c +++ b/drivers/media/dvb-frontends/ds3000.c @@ -1,22 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Montage Technology DS3000 - DVBS/S2 Demodulator driver Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com> Copyright (C) 2009-2012 TurboSight.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/slab.h> @@ -26,7 +14,7 @@ #include <linux/init.h> #include <linux/firmware.h> -#include "dvb_frontend.h" +#include <media/dvb_frontend.h> #include "ts2020.h" #include "ds3000.h" @@ -248,8 +236,8 @@ static int ds3000_writereg(struct ds3000_state *state, int reg, int data) err = i2c_transfer(state->i2c, &msg, 1); if (err != 1) { - printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x," - " value == 0x%02x)\n", __func__, err, reg, data); + printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x, value == 0x%02x)\n", + __func__, err, reg, data); return -EREMOTEIO; } @@ -277,10 +265,8 @@ static int ds3000_writeFW(struct ds3000_state *state, int reg, u8 *buf; buf = kmalloc(33, GFP_KERNEL); - if (buf == NULL) { - printk(KERN_ERR "Unable to kmalloc\n"); + if (!buf) return -ENOMEM; - } *(buf) = reg; @@ -296,8 +282,8 @@ static int ds3000_writeFW(struct ds3000_state *state, int reg, ret = i2c_transfer(state->i2c, &msg, 1); if (ret != 1) { - printk(KERN_ERR "%s: write error(err == %i, " - "reg == 0x%02x\n", __func__, ret, reg); + printk(KERN_ERR "%s: write error(err == %i, reg == 0x%02x\n", + __func__, ret, reg); ret = -EREMOTEIO; goto error; } @@ -364,8 +350,8 @@ static int ds3000_firmware_ondemand(struct dvb_frontend *fe) state->i2c->dev.parent); printk(KERN_INFO "%s: Waiting for firmware upload(2)...\n", __func__); if (ret) { - printk(KERN_ERR "%s: No firmware uploaded (timeout or file not " - "found?)\n", __func__); + printk(KERN_ERR "%s: No firmware uploaded (timeout or file not found?)\n", + __func__); return ret; } @@ -404,7 +390,8 @@ static int ds3000_load_firmware(struct dvb_frontend *fe, return ret; } -static int ds3000_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) +static int ds3000_set_voltage(struct dvb_frontend *fe, + enum fe_sec_voltage voltage) { struct ds3000_state *state = fe->demodulator_priv; u8 data; @@ -431,7 +418,7 @@ static int ds3000_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) return 0; } -static int ds3000_read_status(struct dvb_frontend *fe, fe_status_t* status) +static int ds3000_read_status(struct dvb_frontend *fe, enum fe_status *status) { struct ds3000_state *state = fe->demodulator_priv; struct dtv_frontend_properties *c = &fe->dtv_property_cache; @@ -457,7 +444,7 @@ static int ds3000_read_status(struct dvb_frontend *fe, fe_status_t* status) break; default: - return 1; + return -EINVAL; } if (state->config->set_lock_led) @@ -527,7 +514,7 @@ static int ds3000_read_ber(struct dvb_frontend *fe, u32* ber) *ber = 0xffffffff; break; default: - return 1; + return -EINVAL; } return 0; @@ -616,13 +603,13 @@ static int ds3000_read_snr(struct dvb_frontend *fe, u16 *snr) snr_reading = dvbs2_noise_reading / tmp; if (snr_reading > 80) snr_reading = 80; - *snr = -(dvbs2_snr_tab[snr_reading] / 1000); + *snr = -(dvbs2_snr_tab[snr_reading - 1] / 1000); } dprintk("%s: raw / cooked = 0x%02x / 0x%04x\n", __func__, snr_reading, *snr); break; default: - return 1; + return -EINVAL; } return 0; @@ -660,13 +647,13 @@ static int ds3000_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) state->prevUCBS2 = _ucblocks; break; default: - return 1; + return -EINVAL; } return 0; } -static int ds3000_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) +static int ds3000_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) { struct ds3000_state *state = fe->demodulator_priv; u8 data; @@ -753,7 +740,7 @@ static int ds3000_send_diseqc_msg(struct dvb_frontend *fe, data |= 0x80; ds3000_writereg(state, 0xa2, data); - return 1; + return -ETIMEDOUT; } data = ds3000_readreg(state, 0xa2); @@ -766,7 +753,7 @@ static int ds3000_send_diseqc_msg(struct dvb_frontend *fe, /* Send DiSEqC burst */ static int ds3000_diseqc_send_burst(struct dvb_frontend *fe, - fe_sec_mini_cmd_t burst) + enum fe_sec_mini_cmd burst) { struct ds3000_state *state = fe->demodulator_priv; int i; @@ -807,7 +794,7 @@ static int ds3000_diseqc_send_burst(struct dvb_frontend *fe, data |= 0x80; ds3000_writereg(state, 0xa2, data); - return 1; + return -ETIMEDOUT; } data = ds3000_readreg(state, 0xa2); @@ -829,22 +816,20 @@ static void ds3000_release(struct dvb_frontend *fe) kfree(state); } -static struct dvb_frontend_ops ds3000_ops; +static const struct dvb_frontend_ops ds3000_ops; struct dvb_frontend *ds3000_attach(const struct ds3000_config *config, struct i2c_adapter *i2c) { - struct ds3000_state *state = NULL; + struct ds3000_state *state; int ret; dprintk("%s\n", __func__); /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct ds3000_state), GFP_KERNEL); - if (state == NULL) { - printk(KERN_ERR "Unable to kmalloc\n"); - goto error2; - } + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return NULL; state->config = config; state->i2c = i2c; @@ -853,8 +838,9 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config, /* check if the demod is present */ ret = ds3000_readreg(state, 0x00) & 0xfe; if (ret != 0xe0) { + kfree(state); printk(KERN_ERR "Invalid probe, probably not a DS3000\n"); - goto error3; + return NULL; } printk(KERN_INFO "DS3000 chip version: %d.%d attached.\n", @@ -864,14 +850,16 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config, memcpy(&state->frontend.ops, &ds3000_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; - return &state->frontend; -error3: - kfree(state); -error2: - return NULL; + /* + * Some devices like T480 starts with voltage on. Be sure + * to turn voltage off during init, as this can otherwise + * interfere with Unicable SCR systems. + */ + ds3000_set_voltage(&state->frontend, SEC_VOLTAGE_OFF); + return &state->frontend; } -EXPORT_SYMBOL(ds3000_attach); +EXPORT_SYMBOL_GPL(ds3000_attach); static int ds3000_set_carrier_offset(struct dvb_frontend *fe, s32 carrier_offset_khz) @@ -898,7 +886,7 @@ static int ds3000_set_frontend(struct dvb_frontend *fe) struct dtv_frontend_properties *c = &fe->dtv_property_cache; int i; - fe_status_t status; + enum fe_status status; s32 offset_khz; u32 frequency; u16 value; @@ -914,7 +902,7 @@ static int ds3000_set_frontend(struct dvb_frontend *fe) /* ds3000 global reset */ ds3000_writereg(state, 0x07, 0x80); ds3000_writereg(state, 0x07, 0x00); - /* ds3000 build-in uC reset */ + /* ds3000 built-in uC reset */ ds3000_writereg(state, 0xb2, 0x01); /* ds3000 software reset */ ds3000_writereg(state, 0x00, 0x01); @@ -943,7 +931,7 @@ static int ds3000_set_frontend(struct dvb_frontend *fe) ds3000_writereg(state, 0xfe, 0x98); break; default: - return 1; + return -EINVAL; } /* enable 27MHz clock output */ @@ -951,6 +939,15 @@ static int ds3000_set_frontend(struct dvb_frontend *fe) /* enable ac coupling */ ds3000_writereg(state, 0x25, 0x8a); + if ((c->symbol_rate < ds3000_ops.info.symbol_rate_min) || + (c->symbol_rate > ds3000_ops.info.symbol_rate_max)) { + dprintk("%s() symbol_rate %u out of range (%u ... %u)\n", + __func__, c->symbol_rate, + ds3000_ops.info.symbol_rate_min, + ds3000_ops.info.symbol_rate_max); + return -EINVAL; + } + /* enhance symbol rate performance */ if ((c->symbol_rate / 1000) <= 5000) { value = 29777 / (c->symbol_rate / 1000) + 1; @@ -1014,7 +1011,7 @@ static int ds3000_set_frontend(struct dvb_frontend *fe) /* ds3000 out of software reset */ ds3000_writereg(state, 0x00, 0x00); - /* start ds3000 build-in uC */ + /* start ds3000 built-in uC */ ds3000_writereg(state, 0xb2, 0x00); if (fe->ops.tuner_ops.get_frequency) { @@ -1038,7 +1035,7 @@ static int ds3000_tune(struct dvb_frontend *fe, bool re_tune, unsigned int mode_flags, unsigned int *delay, - fe_status_t *status) + enum fe_status *status) { if (re_tune) { int ret = ds3000_set_frontend(fe); @@ -1087,14 +1084,14 @@ static int ds3000_initfe(struct dvb_frontend *fe) return 0; } -static struct dvb_frontend_ops ds3000_ops = { +static const struct dvb_frontend_ops ds3000_ops = { .delsys = { SYS_DVBS, SYS_DVBS2 }, .info = { .name = "Montage Technology DS3000", - .frequency_min = 950000, - .frequency_max = 2150000, - .frequency_stepsize = 1011, /* kHz for QPSK frontends */ - .frequency_tolerance = 5000, + .frequency_min_hz = 950 * MHz, + .frequency_max_hz = 2150 * MHz, + .frequency_stepsize_hz = 1011 * kHz, + .frequency_tolerance_hz = 5 * MHz, .symbol_rate_min = 1000000, .symbol_rate_max = 45000000, .caps = FE_CAN_INVERSION_AUTO | @@ -1127,8 +1124,7 @@ static struct dvb_frontend_ops ds3000_ops = { module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); -MODULE_DESCRIPTION("DVB Frontend module for Montage Technology " - "DS3000 hardware"); +MODULE_DESCRIPTION("DVB Frontend module for Montage Technology DS3000 hardware"); MODULE_AUTHOR("Konstantin Dimitrov <kosio.dimitrov@gmail.com>"); MODULE_LICENSE("GPL"); MODULE_FIRMWARE(DS3000_DEFAULT_FIRMWARE); |