diff options
Diffstat (limited to 'drivers/media/dvb-frontends/stv0367.c')
| -rw-r--r-- | drivers/media/dvb-frontends/stv0367.c | 60 |
1 files changed, 14 insertions, 46 deletions
diff --git a/drivers/media/dvb-frontends/stv0367.c b/drivers/media/dvb-frontends/stv0367.c index 5b91e740e135..72540ef4e5f8 100644 --- a/drivers/media/dvb-frontends/stv0367.c +++ b/drivers/media/dvb-frontends/stv0367.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * stv0367.c * @@ -6,17 +7,6 @@ * Copyright (C) ST Microelectronics. * Copyright (C) 2010,2011 NetUP Inc. * Copyright (C) 2010,2011 Igor M. Liplianin <liplianin@netup.ru> - * - * 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. */ #include <linux/kernel.h> @@ -25,7 +15,7 @@ #include <linux/slab.h> #include <linux/i2c.h> -#include <media/dvb_math.h> +#include <linux/int_log.h> #include "stv0367.h" #include "stv0367_defs.h" @@ -128,50 +118,32 @@ static const s32 stv0367cab_RF_LookUp2[RF_LOOKUP_TABLE2_SIZE][RF_LOOKUP_TABLE2_S } }; -static -int stv0367_writeregs(struct stv0367_state *state, u16 reg, u8 *data, int len) +static noinline_for_stack +int stv0367_writereg(struct stv0367_state *state, u16 reg, u8 data) { - u8 buf[MAX_XFER_SIZE]; + u8 buf[3] = { MSB(reg), LSB(reg), data }; struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, - .len = len + 2 + .len = 3, }; int ret; - if (2 + len > sizeof(buf)) { - printk(KERN_WARNING - "%s: i2c wr reg=%04x: len=%d is too big!\n", - KBUILD_MODNAME, reg, len); - return -EINVAL; - } - - - buf[0] = MSB(reg); - buf[1] = LSB(reg); - memcpy(buf + 2, data, len); - if (i2cdebug) printk(KERN_DEBUG "%s: [%02x] %02x: %02x\n", __func__, - state->config->demod_address, reg, buf[2]); + state->config->demod_address, reg, data); ret = i2c_transfer(state->i2c, &msg, 1); if (ret != 1) printk(KERN_ERR "%s: i2c write error! ([%02x] %02x: %02x)\n", - __func__, state->config->demod_address, reg, buf[2]); + __func__, state->config->demod_address, reg, data); return (ret != 1) ? -EREMOTEIO : 0; } -static int stv0367_writereg(struct stv0367_state *state, u16 reg, u8 data) -{ - u8 tmp = data; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */ - - return stv0367_writeregs(state, reg, &tmp, 1); -} - -static u8 stv0367_readreg(struct stv0367_state *state, u16 reg) +static noinline_for_stack +u8 stv0367_readreg(struct stv0367_state *state, u16 reg) { u8 b0[] = { 0, 0 }; u8 b1[] = { 0 }; @@ -1760,7 +1732,7 @@ error: kfree(state); return NULL; } -EXPORT_SYMBOL(stv0367ter_attach); +EXPORT_SYMBOL_GPL(stv0367ter_attach); static int stv0367cab_gate_ctrl(struct dvb_frontend *fe, int enable) { @@ -1807,11 +1779,7 @@ static u32 stv0367cab_get_mclk(struct dvb_frontend *fe, u32 ExtClk_Hz) static u32 stv0367cab_get_adc_freq(struct dvb_frontend *fe, u32 ExtClk_Hz) { - u32 ADCClk_Hz = ExtClk_Hz; - - ADCClk_Hz = stv0367cab_get_mclk(fe, ExtClk_Hz); - - return ADCClk_Hz; + return stv0367cab_get_mclk(fe, ExtClk_Hz); } static enum stv0367cab_mod stv0367cab_SetQamSize(struct stv0367_state *state, @@ -2933,7 +2901,7 @@ error: kfree(state); return NULL; } -EXPORT_SYMBOL(stv0367cab_attach); +EXPORT_SYMBOL_GPL(stv0367cab_attach); /* * Functions for operation on Digital Devices hardware @@ -3354,7 +3322,7 @@ error: kfree(state); return NULL; } -EXPORT_SYMBOL(stv0367ddb_attach); +EXPORT_SYMBOL_GPL(stv0367ddb_attach); MODULE_PARM_DESC(debug, "Set debug"); MODULE_PARM_DESC(i2c_debug, "Set i2c debug"); |