diff options
Diffstat (limited to 'drivers/media/dvb-frontends/tda10021.c')
| -rw-r--r-- | drivers/media/dvb-frontends/tda10021.c | 88 |
1 files changed, 43 insertions, 45 deletions
diff --git a/drivers/media/dvb-frontends/tda10021.c b/drivers/media/dvb-frontends/tda10021.c index 1bff7f457e19..462e12ab6bd1 100644 --- a/drivers/media/dvb-frontends/tda10021.c +++ b/drivers/media/dvb-frontends/tda10021.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* TDA10021 - Single Chip Cable Channel Receiver driver module used on the Siemens DVB-C cards @@ -6,19 +7,6 @@ Copyright (C) 2004 Markus Schulz <msc@antzsystem.de> Support for TDA10021 - 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/delay.h> @@ -29,7 +17,7 @@ #include <linux/string.h> #include <linux/slab.h> -#include "dvb_frontend.h" +#include <media/dvb_frontend.h> #include "tda1002x.h" @@ -77,8 +65,7 @@ static int _tda10021_writereg (struct tda10021_state* state, u8 reg, u8 data) ret = i2c_transfer (state->i2c, &msg, 1); if (ret != 1) - printk("DVB: TDA10021(%d): %s, writereg error " - "(reg == 0x%02x, val == 0x%02x, ret == %i)\n", + printk("DVB: TDA10021(%d): %s, writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n", state->frontend.dvb->num, __func__, reg, data, ret); msleep(10); @@ -129,8 +116,8 @@ static int unlock_tuner(struct tda10021_state* state) return 0; } -static int tda10021_setup_reg0 (struct tda10021_state* state, u8 reg0, - fe_spectral_inversion_t inversion) +static int tda10021_setup_reg0(struct tda10021_state *state, u8 reg0, + enum fe_spectral_inversion inversion) { reg0 |= state->reg0 & 0x63; @@ -150,26 +137,36 @@ static int tda10021_set_symbolrate (struct tda10021_state* state, u32 symbolrate { s32 BDR; s32 BDRI; - s16 SFIL=0; + s16 SFIL = 0; u16 NDEC = 0; u32 tmp, ratio; - if (symbolrate > XIN/2) - symbolrate = XIN/2; - if (symbolrate < 500000) + if (symbolrate > XIN / 2) + symbolrate = XIN / 2; + else if (symbolrate < 500000) symbolrate = 500000; - if (symbolrate < XIN/16) NDEC = 1; - if (symbolrate < XIN/32) NDEC = 2; - if (symbolrate < XIN/64) NDEC = 3; - - if (symbolrate < (u32)(XIN/12.3)) SFIL = 1; - if (symbolrate < (u32)(XIN/16)) SFIL = 0; - if (symbolrate < (u32)(XIN/24.6)) SFIL = 1; - if (symbolrate < (u32)(XIN/32)) SFIL = 0; - if (symbolrate < (u32)(XIN/49.2)) SFIL = 1; - if (symbolrate < (u32)(XIN/64)) SFIL = 0; - if (symbolrate < (u32)(XIN/98.4)) SFIL = 1; + if (symbolrate < XIN / 16) + NDEC = 1; + if (symbolrate < XIN / 32) + NDEC = 2; + if (symbolrate < XIN / 64) + NDEC = 3; + + if (symbolrate < XIN * 10 / 123) + SFIL = 1; + if (symbolrate < XIN * 10 / 160) + SFIL = 0; + if (symbolrate < XIN * 10 / 246) + SFIL = 1; + if (symbolrate < XIN * 10 / 320) + SFIL = 0; + if (symbolrate < XIN * 10 / 492) + SFIL = 1; + if (symbolrate < XIN * 10 / 640) + SFIL = 0; + if (symbolrate < XIN * 10 / 984) + SFIL = 1; symbolrate <<= NDEC; ratio = (symbolrate << 4) / FIN; @@ -258,7 +255,7 @@ static int tda10021_set_parameters(struct dvb_frontend *fe) } /* - * gcc optimizes the code bellow the same way as it would code: + * gcc optimizes the code below the same way as it would code: * "if (qam > 5) return -EINVAL;" * Yet, the code is clearer, as it shows what QAM standards are * supported by the driver, and avoids the usage of magic numbers on @@ -308,7 +305,8 @@ static int tda10021_set_parameters(struct dvb_frontend *fe) return 0; } -static int tda10021_read_status(struct dvb_frontend* fe, fe_status_t* status) +static int tda10021_read_status(struct dvb_frontend *fe, + enum fe_status *status) { struct tda10021_state* state = fe->demodulator_priv; int sync; @@ -386,9 +384,9 @@ static int tda10021_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) return 0; } -static int tda10021_get_frontend(struct dvb_frontend *fe) +static int tda10021_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *p) { - struct dtv_frontend_properties *p = &fe->dtv_property_cache; struct tda10021_state* state = fe->demodulator_priv; int sync; s8 afc = 0; @@ -443,7 +441,7 @@ static void tda10021_release(struct dvb_frontend* fe) kfree(state); } -static struct dvb_frontend_ops tda10021_ops; +static const struct dvb_frontend_ops tda10021_ops; struct dvb_frontend* tda10021_attach(const struct tda1002x_config* config, struct i2c_adapter* i2c, @@ -483,15 +481,15 @@ error: return NULL; } -static struct dvb_frontend_ops tda10021_ops = { +static const struct dvb_frontend_ops tda10021_ops = { .delsys = { SYS_DVBC_ANNEX_A, SYS_DVBC_ANNEX_C }, .info = { .name = "Philips TDA10021 DVB-C", - .frequency_stepsize = 62500, - .frequency_min = 47000000, - .frequency_max = 862000000, - .symbol_rate_min = (XIN/2)/64, /* SACLK/64 == (XIN/2)/64 */ - .symbol_rate_max = (XIN/2)/4, /* SACLK/4 */ + .frequency_min_hz = 47 * MHz, + .frequency_max_hz = 862 * MHz, + .frequency_stepsize_hz = 62500, + .symbol_rate_min = (XIN / 2) / 64, /* SACLK/64 == (XIN/2)/64 */ + .symbol_rate_max = (XIN / 2) / 4, /* SACLK/4 */ #if 0 .frequency_tolerance = ???, .symbol_rate_tolerance = ???, /* ppm */ /* == 8% (spec p. 5) */ @@ -525,4 +523,4 @@ MODULE_DESCRIPTION("Philips TDA10021 DVB-C demodulator driver"); MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Markus Schulz"); MODULE_LICENSE("GPL"); -EXPORT_SYMBOL(tda10021_attach); +EXPORT_SYMBOL_GPL(tda10021_attach); |