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linux-next/drivers/media/radio/wl128x/fmdrv_tx.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

423 lines
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/*
* FM Driver for Connectivity chip of Texas Instruments.
* This sub-module of FM driver implements FM TX functionality.
*
* Copyright (C) 2011 Texas Instruments
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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/delay.h>
#include "fmdrv.h"
#include "fmdrv_common.h"
#include "fmdrv_tx.h"
int fm_tx_set_stereo_mono(struct fmdev *fmdev, u16 mode)
{
u16 payload;
int ret;
if (fmdev->tx_data.aud_mode == mode)
return 0;
fmdbg("stereo mode: %d\n", mode);
/* Set Stereo/Mono mode */
payload = (1 - mode);
ret = fmc_send_cmd(fmdev, MONO_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
fmdev->tx_data.aud_mode = mode;
return ret;
}
static int set_rds_text(struct fmdev *fmdev, u8 *rds_text)
{
u16 payload;
int ret;
ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text,
strlen(rds_text), NULL, NULL);
if (ret < 0)
return ret;
/* Scroll mode */
payload = (u16)0x1;
ret = fmc_send_cmd(fmdev, DISPLAY_MODE, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
return 0;
}
static int set_rds_data_mode(struct fmdev *fmdev, u8 mode)
{
u16 payload;
int ret;
/* Setting unique PI TODO: how unique? */
payload = (u16)0xcafe;
ret = fmc_send_cmd(fmdev, PI_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
/* Set decoder id */
payload = (u16)0xa;
ret = fmc_send_cmd(fmdev, DI_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
/* TODO: RDS_MODE_GET? */
return 0;
}
static int set_rds_len(struct fmdev *fmdev, u8 type, u16 len)
{
u16 payload;
int ret;
len |= type << 8;
payload = len;
ret = fmc_send_cmd(fmdev, RDS_CONFIG_DATA_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
/* TODO: LENGTH_GET? */
return 0;
}
int fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
{
u16 payload;
int ret;
u8 rds_text[] = "Zoom2\n";
fmdbg("rds_en_dis:%d(E:%d, D:%d)\n", rds_en_dis,
FM_RDS_ENABLE, FM_RDS_DISABLE);
if (rds_en_dis == FM_RDS_ENABLE) {
/* Set RDS length */
set_rds_len(fmdev, 0, strlen(rds_text));
/* Set RDS text */
set_rds_text(fmdev, rds_text);
/* Set RDS mode */
set_rds_data_mode(fmdev, 0x0);
}
/* Send command to enable RDS */
if (rds_en_dis == FM_RDS_ENABLE)
payload = 0x01;
else
payload = 0x00;
ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
if (rds_en_dis == FM_RDS_ENABLE) {
/* Set RDS length */
set_rds_len(fmdev, 0, strlen(rds_text));
/* Set RDS text */
set_rds_text(fmdev, rds_text);
}
fmdev->tx_data.rds.flag = rds_en_dis;
return 0;
}
int fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type)
{
u16 payload;
int ret;
if (fmdev->curr_fmmode != FM_MODE_TX)
return -EPERM;
fm_tx_set_rds_mode(fmdev, 0);
/* Set RDS length */
set_rds_len(fmdev, rds_type, strlen(rds_text));
/* Set RDS text */
set_rds_text(fmdev, rds_text);
/* Set RDS mode */
set_rds_data_mode(fmdev, 0x0);
payload = 1;
ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
return 0;
}
int fm_tx_set_af(struct fmdev *fmdev, u32 af)
{
u16 payload;
int ret;
if (fmdev->curr_fmmode != FM_MODE_TX)
return -EPERM;
fmdbg("AF: %d\n", af);
af = (af - 87500) / 100;
payload = (u16)af;
ret = fmc_send_cmd(fmdev, TA_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
return 0;
}
int fm_tx_set_region(struct fmdev *fmdev, u8 region)
{
u16 payload;
int ret;
if (region != FM_BAND_EUROPE_US && region != FM_BAND_JAPAN) {
fmerr("Invalid band\n");
return -EINVAL;
}
/* Send command to set the band */
payload = (u16)region;
ret = fmc_send_cmd(fmdev, TX_BAND_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
return 0;
}
int fm_tx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset)
{
u16 payload;
int ret;
fmdbg("tx: mute mode %d\n", mute_mode_toset);
payload = mute_mode_toset;
ret = fmc_send_cmd(fmdev, MUTE, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
return 0;
}
/* Set TX Audio I/O */
static int set_audio_io(struct fmdev *fmdev)
{
struct fmtx_data *tx = &fmdev->tx_data;
u16 payload;
int ret;
/* Set Audio I/O Enable */
payload = tx->audio_io;
ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
/* TODO: is audio set? */
return 0;
}
/* Start TX Transmission */
static int enable_xmit(struct fmdev *fmdev, u8 new_xmit_state)
{
struct fmtx_data *tx = &fmdev->tx_data;
unsigned long timeleft;
u16 payload;
int ret;
/* Enable POWER_ENB interrupts */
payload = FM_POW_ENB_EVENT;
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
/* Set Power Enable */
payload = new_xmit_state;
ret = fmc_send_cmd(fmdev, POWER_ENB_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
/* Wait for Power Enabled */
init_completion(&fmdev->maintask_comp);
timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
FM_DRV_TX_TIMEOUT);
if (!timeleft) {
fmerr("Timeout(%d sec),didn't get tune ended interrupt\n",
jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
return -ETIMEDOUT;
}
set_bit(FM_CORE_TX_XMITING, &fmdev->flag);
tx->xmit_state = new_xmit_state;
return 0;
}
/* Set TX power level */
int fm_tx_set_pwr_lvl(struct fmdev *fmdev, u8 new_pwr_lvl)
{
u16 payload;
struct fmtx_data *tx = &fmdev->tx_data;
int ret;
if (fmdev->curr_fmmode != FM_MODE_TX)
return -EPERM;
fmdbg("tx: pwr_level_to_set %ld\n", (long int)new_pwr_lvl);
/* If the core isn't ready update global variable */
if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
tx->pwr_lvl = new_pwr_lvl;
return 0;
}
/* Set power level: Application will specify power level value in
* units of dB/uV, whereas range and step are specific to FM chip.
* For TI's WL chips, convert application specified power level value
* to chip specific value by subtracting 122 from it. Refer to TI FM
* data sheet for details.
* */
payload = (FM_PWR_LVL_HIGH - new_pwr_lvl);
ret = fmc_send_cmd(fmdev, POWER_LEV_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
/* TODO: is the power level set? */
tx->pwr_lvl = new_pwr_lvl;
return 0;
}
/*
* Sets FM TX pre-emphasis filter value (OFF, 50us, or 75us)
* Convert V4L2 specified filter values to chip specific filter values.
*/
int fm_tx_set_preemph_filter(struct fmdev *fmdev, u32 preemphasis)
{
struct fmtx_data *tx = &fmdev->tx_data;
u16 payload;
int ret;
if (fmdev->curr_fmmode != FM_MODE_TX)
return -EPERM;
switch (preemphasis) {
case V4L2_PREEMPHASIS_DISABLED:
payload = FM_TX_PREEMPH_OFF;
break;
case V4L2_PREEMPHASIS_50_uS:
payload = FM_TX_PREEMPH_50US;
break;
case V4L2_PREEMPHASIS_75_uS:
payload = FM_TX_PREEMPH_75US;
break;
}
ret = fmc_send_cmd(fmdev, PREMPH_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
tx->preemph = payload;
return ret;
}
/* Get the TX tuning capacitor value.*/
int fm_tx_get_tune_cap_val(struct fmdev *fmdev)
{
u16 curr_val;
u32 resp_len;
int ret;
if (fmdev->curr_fmmode != FM_MODE_TX)
return -EPERM;
ret = fmc_send_cmd(fmdev, READ_FMANT_TUNE_VALUE, REG_RD,
NULL, sizeof(curr_val), &curr_val, &resp_len);
if (ret < 0)
return ret;
curr_val = be16_to_cpu((__force __be16)curr_val);
return curr_val;
}
/* Set TX Frequency */
int fm_tx_set_freq(struct fmdev *fmdev, u32 freq_to_set)
{
struct fmtx_data *tx = &fmdev->tx_data;
u16 payload, chanl_index;
int ret;
if (test_bit(FM_CORE_TX_XMITING, &fmdev->flag)) {
enable_xmit(fmdev, 0);
clear_bit(FM_CORE_TX_XMITING, &fmdev->flag);
}
/* Enable FR, BL interrupts */
payload = (FM_FR_EVENT | FM_BL_EVENT);
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
tx->tx_frq = (unsigned long)freq_to_set;
fmdbg("tx: freq_to_set %ld\n", (long int)tx->tx_frq);
chanl_index = freq_to_set / 10;
/* Set current tuner channel */
payload = chanl_index;
ret = fmc_send_cmd(fmdev, CHANL_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
fm_tx_set_pwr_lvl(fmdev, tx->pwr_lvl);
fm_tx_set_preemph_filter(fmdev, tx->preemph);
tx->audio_io = 0x01; /* I2S */
set_audio_io(fmdev);
enable_xmit(fmdev, 0x01); /* Enable transmission */
tx->aud_mode = FM_STEREO_MODE;
tx->rds.flag = FM_RDS_DISABLE;
return 0;
}
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