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path: root/drivers/media/dvb-frontends/nxt200x.c
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Diffstat (limited to 'drivers/media/dvb-frontends/nxt200x.c')
-rw-r--r--drivers/media/dvb-frontends/nxt200x.c80
1 files changed, 29 insertions, 51 deletions
diff --git a/drivers/media/dvb-frontends/nxt200x.c b/drivers/media/dvb-frontends/nxt200x.c
index 8e288940a61f..1c549ada6ebf 100644
--- a/drivers/media/dvb-frontends/nxt200x.c
+++ b/drivers/media/dvb-frontends/nxt200x.c
@@ -1,25 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Support for NXT2002 and NXT2004 - VSB/QAM
*
* Copyright (C) 2005 Kirk Lapray <kirk.lapray@gmail.com>
- * Copyright (C) 2006 Michael Krufky <mkrufky@m1k.net>
+ * Copyright (C) 2006-2014 Michael Krufky <mkrufky@linuxtv.org>
* based on nxt2002 by Taylor Jacob <rtjacob@earthlink.net>
* and nxt2004 by Jean-Francois Thibert <jeanfrancois@sagetv.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.
- *
*/
/*
@@ -31,14 +17,17 @@
* ATI HDTV Wonder (NXT2004)
*
* This driver needs external firmware. Please use the command
- * "<kerneldir>/Documentation/dvb/get_dvb_firmware nxt2002" or
- * "<kerneldir>/Documentation/dvb/get_dvb_firmware nxt2004" to
+ * "<kerneldir>/scripts/get_dvb_firmware nxt2002" or
+ * "<kerneldir>/scripts/get_dvb_firmware nxt2004" to
* download/extract the appropriate firmware, and then copy it to
* /usr/lib/hotplug/firmware/ or /lib/firmware/
* (depending on configuration of firmware hotplug).
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+/* Max transfer size done by I2C transfer functions */
+#define MAX_XFER_SIZE 256
+
#define NXT2002_DEFAULT_FIRMWARE "dvb-fe-nxt2002.fw"
#define NXT2004_DEFAULT_FIRMWARE "dvb-fe-nxt2004.fw"
#define CRC_CCIT_MASK 0x1021
@@ -49,7 +38,7 @@
#include <linux/slab.h>
#include <linux/string.h>
-#include "dvb_frontend.h"
+#include <media/dvb_frontend.h>
#include "nxt200x.h"
struct nxt200x_state {
@@ -95,10 +84,16 @@ static int i2c_readbytes(struct nxt200x_state *state, u8 addr, u8 *buf, u8 len)
static int nxt200x_writebytes (struct nxt200x_state* state, u8 reg,
const u8 *buf, u8 len)
{
- u8 buf2 [len+1];
+ u8 buf2[MAX_XFER_SIZE];
int err;
struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf2, .len = len + 1 };
+ if (1 + len > sizeof(buf2)) {
+ pr_warn("%s: i2c wr reg=%04x: len=%d is too big!\n",
+ __func__, reg, len);
+ return -EINVAL;
+ }
+
buf2[0] = reg;
memcpy(&buf2[1], buf, len);
@@ -148,7 +143,7 @@ static int nxt200x_writereg_multibyte (struct nxt200x_state* state, u8 reg, u8*
u8 attr, len2, buf;
dprintk("%s\n", __func__);
- /* set mutli register register */
+ /* set multi register register */
nxt200x_writebytes(state, 0x35, &reg, 1);
/* send the actual data */
@@ -173,7 +168,6 @@ static int nxt200x_writereg_multibyte (struct nxt200x_state* state, u8 reg, u8*
break;
default:
return -EINVAL;
- break;
}
/* set multi register length */
@@ -195,7 +189,6 @@ static int nxt200x_writereg_multibyte (struct nxt200x_state* state, u8 reg, u8*
break;
default:
return -EINVAL;
- break;
}
pr_warn("Error writing multireg register 0x%02X\n", reg);
@@ -209,7 +202,7 @@ static int nxt200x_readreg_multibyte (struct nxt200x_state* state, u8 reg, u8* d
u8 buf, len2, attr;
dprintk("%s\n", __func__);
- /* set mutli register register */
+ /* set multi register register */
nxt200x_writebytes(state, 0x35, &reg, 1);
switch (state->demod_chip) {
@@ -221,7 +214,6 @@ static int nxt200x_readreg_multibyte (struct nxt200x_state* state, u8 reg, u8* d
/* read the actual data */
nxt200x_readbytes(state, reg, data, len);
return 0;
- break;
case NXT2004:
/* probably not right, but gives correct values */
attr = 0x02;
@@ -244,10 +236,8 @@ static int nxt200x_readreg_multibyte (struct nxt200x_state* state, u8 reg, u8* d
nxt200x_readbytes(state, 0x36 + i, &data[i], 1);
}
return 0;
- break;
default:
return -EINVAL;
- break;
}
}
@@ -280,8 +270,7 @@ static void nxt200x_microcontroller_stop (struct nxt200x_state* state)
counter++;
}
- pr_warn("Timeout waiting for nxt200x to stop. This is ok after "
- "firmware upload.\n");
+ pr_warn("Timeout waiting for nxt200x to stop. This is ok after firmware upload.\n");
return;
}
@@ -380,7 +369,6 @@ static int nxt200x_writetuner (struct nxt200x_state* state, u8* data)
break;
default:
return -EINVAL;
- break;
}
return 0;
}
@@ -561,7 +549,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
if (fe->ops.tuner_ops.calc_regs) {
@@ -586,7 +573,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
nxt200x_writebytes(state, 0x42, buf, 1);
@@ -600,7 +586,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
nxt200x_writebytes(state, 0x57, buf, 1);
@@ -616,7 +601,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
/* write sdmx input */
@@ -632,7 +616,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
buf[1] = 0x00;
switch (state->demod_chip) {
@@ -644,7 +627,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
/* write adc power lpf fc */
@@ -670,7 +652,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
/* write kg1 */
@@ -726,7 +707,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
nxt200x_writebytes(state, 0x30, buf, 1);
@@ -748,7 +728,6 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
break;
default:
return -EINVAL;
- break;
}
/* write agc control reg */
@@ -772,7 +751,7 @@ static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe)
return 0;
}
-static int nxt200x_read_status(struct dvb_frontend* fe, fe_status_t* status)
+static int nxt200x_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct nxt200x_state* state = fe->demodulator_priv;
u8 lock;
@@ -884,8 +863,8 @@ static int nxt2002_init(struct dvb_frontend* fe)
state->i2c->dev.parent);
pr_debug("%s: Waiting for firmware upload(2)...\n", __func__);
if (ret) {
- pr_err("%s: No firmware uploaded (timeout or file not found?)"
- "\n", __func__);
+ pr_err("%s: No firmware uploaded (timeout or file not found?)\n",
+ __func__);
return ret;
}
@@ -951,8 +930,8 @@ static int nxt2004_init(struct dvb_frontend* fe)
state->i2c->dev.parent);
pr_debug("%s: Waiting for firmware upload(2)...\n", __func__);
if (ret) {
- pr_err("%s: No firmware uploaded (timeout or file not found?)"
- "\n", __func__);
+ pr_err("%s: No firmware uploaded (timeout or file not found?)\n",
+ __func__);
return ret;
}
@@ -1120,7 +1099,6 @@ static int nxt200x_init(struct dvb_frontend* fe)
break;
default:
return -EINVAL;
- break;
}
state->initialised = 1;
}
@@ -1141,7 +1119,7 @@ static void nxt200x_release(struct dvb_frontend* fe)
kfree(state);
}
-static struct dvb_frontend_ops nxt200x_ops;
+static const struct dvb_frontend_ops nxt200x_ops;
struct dvb_frontend* nxt200x_attach(const struct nxt200x_config* config,
struct i2c_adapter* i2c)
@@ -1204,13 +1182,13 @@ error:
return NULL;
}
-static struct dvb_frontend_ops nxt200x_ops = {
+static const struct dvb_frontend_ops nxt200x_ops = {
.delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
.info = {
.name = "Nextwave NXT200X VSB/QAM frontend",
- .frequency_min = 54000000,
- .frequency_max = 860000000,
- .frequency_stepsize = 166666, /* stepsize is just a guess */
+ .frequency_min_hz = 54 * MHz,
+ .frequency_max_hz = 860 * MHz,
+ .frequency_stepsize_hz = 166666, /* stepsize is just a guess */
.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_8VSB | FE_CAN_QAM_64 | FE_CAN_QAM_256
@@ -1238,5 +1216,5 @@ MODULE_DESCRIPTION("NXT200X (ATSC 8VSB & ITU-T J.83 AnnexB 64/256 QAM) Demodulat
MODULE_AUTHOR("Kirk Lapray, Michael Krufky, Jean-Francois Thibert, and Taylor Jacob");
MODULE_LICENSE("GPL");
-EXPORT_SYMBOL(nxt200x_attach);
+EXPORT_SYMBOL_GPL(nxt200x_attach);
generated by cgit (git 2.34.1) at 2025-12-25 15:36:47 +0000