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path: root/drivers/media/dvb-frontends/tda10048.c
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Diffstat (limited to 'drivers/media/dvb-frontends/tda10048.c')
-rw-r--r--drivers/media/dvb-frontends/tda10048.c69
1 files changed, 31 insertions, 38 deletions
diff --git a/drivers/media/dvb-frontends/tda10048.c b/drivers/media/dvb-frontends/tda10048.c
index 71fb63299de7..1f87eb0dcf2a 100644
--- a/drivers/media/dvb-frontends/tda10048.c
+++ b/drivers/media/dvb-frontends/tda10048.c
@@ -1,21 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
NXP TDA10048HN DVB OFDM demodulator driver
Copyright (C) 2009 Steven Toth <stoth@kernellabs.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.
*/
@@ -27,8 +15,8 @@
#include <linux/delay.h>
#include <linux/math64.h>
#include <asm/div64.h>
-#include "dvb_frontend.h"
-#include "dvb_math.h"
+#include <media/dvb_frontend.h>
+#include <linux/int_log.h>
#include "tda10048.h"
#define TDA10048_DEFAULT_FIRMWARE "dvb-fe-tda10048-1.0.fw"
@@ -340,7 +328,8 @@ static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
u32 bw)
{
struct tda10048_state *state = fe->demodulator_priv;
- u64 t, z;
+ u64 t;
+ u32 z;
dprintk(1, "%s()\n", __func__);
@@ -353,6 +342,11 @@ static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
/* t *= 2147483648 on 32bit platforms */
t *= (2048 * 1024);
t *= 1024;
+
+ /*
+ * Sample frequency is typically 55 MHz, with a theoretical maximum of
+ * 69 MHz. With a 32 bit z we have enough accuracy for up to 613 MHz.
+ */
z = 7 * sample_freq_hz;
do_div(t, z);
t += 5;
@@ -422,6 +416,7 @@ static int tda10048_set_if(struct dvb_frontend *fe, u32 bw)
struct tda10048_config *config = &state->config;
int i;
u32 if_freq_khz;
+ u64 sample_freq;
dprintk(1, "%s(bw = %d)\n", __func__, bw);
@@ -463,9 +458,11 @@ static int tda10048_set_if(struct dvb_frontend *fe, u32 bw)
dprintk(1, "- pll_pfactor = %d\n", state->pll_pfactor);
/* Calculate the sample frequency */
- state->sample_freq = state->xtal_hz * (state->pll_mfactor + 45);
- state->sample_freq /= (state->pll_nfactor + 1);
- state->sample_freq /= (state->pll_pfactor + 4);
+ sample_freq = state->xtal_hz;
+ sample_freq *= state->pll_mfactor + 45;
+ do_div(sample_freq, state->pll_nfactor + 1);
+ do_div(sample_freq, state->pll_pfactor + 4);
+ state->sample_freq = sample_freq;
dprintk(1, "- sample_freq = %d\n", state->sample_freq);
/* Update the I/F */
@@ -499,7 +496,7 @@ static int tda10048_firmware_upload(struct dvb_frontend *fe)
__func__);
return -EIO;
} else {
- printk(KERN_INFO "%s: firmware read %Zu bytes.\n",
+ printk(KERN_INFO "%s: firmware read %zu bytes.\n",
__func__,
fw->size);
ret = 0;
@@ -792,7 +789,7 @@ static int tda10048_init(struct dvb_frontend *fe)
return ret;
}
-static int tda10048_read_status(struct dvb_frontend *fe, fe_status_t *status)
+static int tda10048_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct tda10048_state *state = fe->demodulator_priv;
u8 reg;
@@ -1028,9 +1025,9 @@ static int tda10048_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
return 0;
}
-static int tda10048_get_frontend(struct dvb_frontend *fe)
+static int tda10048_get_frontend(struct dvb_frontend *fe,
+ struct dtv_frontend_properties *p)
{
- struct dtv_frontend_properties *p = &fe->dtv_property_cache;
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1, "%s()\n", __func__);
@@ -1063,38 +1060,34 @@ static void tda10048_establish_defaults(struct dvb_frontend *fe)
/* Validate/default the config */
if (config->dtv6_if_freq_khz == 0) {
config->dtv6_if_freq_khz = TDA10048_IF_4300;
- printk(KERN_WARNING "%s() tda10048_config.dtv6_if_freq_khz "
- "is not set (defaulting to %d)\n",
+ printk(KERN_WARNING "%s() tda10048_config.dtv6_if_freq_khz is not set (defaulting to %d)\n",
__func__,
config->dtv6_if_freq_khz);
}
if (config->dtv7_if_freq_khz == 0) {
config->dtv7_if_freq_khz = TDA10048_IF_4300;
- printk(KERN_WARNING "%s() tda10048_config.dtv7_if_freq_khz "
- "is not set (defaulting to %d)\n",
+ printk(KERN_WARNING "%s() tda10048_config.dtv7_if_freq_khz is not set (defaulting to %d)\n",
__func__,
config->dtv7_if_freq_khz);
}
if (config->dtv8_if_freq_khz == 0) {
config->dtv8_if_freq_khz = TDA10048_IF_4300;
- printk(KERN_WARNING "%s() tda10048_config.dtv8_if_freq_khz "
- "is not set (defaulting to %d)\n",
+ printk(KERN_WARNING "%s() tda10048_config.dtv8_if_freq_khz is not set (defaulting to %d)\n",
__func__,
config->dtv8_if_freq_khz);
}
if (config->clk_freq_khz == 0) {
config->clk_freq_khz = TDA10048_CLK_16000;
- printk(KERN_WARNING "%s() tda10048_config.clk_freq_khz "
- "is not set (defaulting to %d)\n",
+ printk(KERN_WARNING "%s() tda10048_config.clk_freq_khz is not set (defaulting to %d)\n",
__func__,
config->clk_freq_khz);
}
}
-static struct dvb_frontend_ops tda10048_ops;
+static const struct dvb_frontend_ops tda10048_ops;
struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
struct i2c_adapter *i2c)
@@ -1134,7 +1127,7 @@ struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
state->pll_pfactor = 0;
}
- /* Establish any defaults the the user didn't pass */
+ /* Establish any defaults the user didn't pass */
tda10048_establish_defaults(&state->frontend);
/* Set the xtal and freq defaults */
@@ -1154,15 +1147,15 @@ error:
kfree(state);
return NULL;
}
-EXPORT_SYMBOL(tda10048_attach);
+EXPORT_SYMBOL_GPL(tda10048_attach);
-static struct dvb_frontend_ops tda10048_ops = {
+static const struct dvb_frontend_ops tda10048_ops = {
.delsys = { SYS_DVBT },
.info = {
.name = "NXP TDA10048HN DVB-T",
- .frequency_min = 177000000,
- .frequency_max = 858000000,
- .frequency_stepsize = 166666,
+ .frequency_min_hz = 177 * MHz,
+ .frequency_max_hz = 858 * MHz,
+ .frequency_stepsize_hz = 166666,
.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
generated by cgit (git 2.34.1) at 2025-12-25 13:25:31 +0000