834 lines
20 KiB
C
834 lines
20 KiB
C
/*
|
|
* FM Driver for Connectivity chip of Texas Instruments.
|
|
* This sub-module of FM driver implements FM RX functionality.
|
|
*
|
|
* Copyright (C) 2011 Texas Instruments
|
|
* Author: Raja Mani <raja_mani@ti.com>
|
|
* Author: Manjunatha Halli <manjunatha_halli@ti.com>
|
|
*
|
|
* 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.
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include "fmdrv.h"
|
|
#include "fmdrv_common.h"
|
|
#include "fmdrv_rx.h"
|
|
|
|
void fm_rx_reset_rds_cache(struct fmdev *fmdev)
|
|
{
|
|
fmdev->rx.rds.flag = FM_RDS_DISABLE;
|
|
fmdev->rx.rds.last_blk_idx = 0;
|
|
fmdev->rx.rds.wr_idx = 0;
|
|
fmdev->rx.rds.rd_idx = 0;
|
|
|
|
if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
|
|
fmdev->irq_info.mask |= FM_LEV_EVENT;
|
|
}
|
|
|
|
void fm_rx_reset_station_info(struct fmdev *fmdev)
|
|
{
|
|
fmdev->rx.stat_info.picode = FM_NO_PI_CODE;
|
|
fmdev->rx.stat_info.afcache_size = 0;
|
|
fmdev->rx.stat_info.af_list_max = 0;
|
|
}
|
|
|
|
int fm_rx_set_freq(struct fmdev *fmdev, u32 freq)
|
|
{
|
|
unsigned long timeleft;
|
|
u16 payload, curr_frq, intr_flag;
|
|
u32 curr_frq_in_khz;
|
|
u32 resp_len;
|
|
int ret;
|
|
|
|
if (freq < fmdev->rx.region.bot_freq || freq > fmdev->rx.region.top_freq) {
|
|
fmerr("Invalid frequency %d\n", freq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Set audio enable */
|
|
payload = FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG;
|
|
|
|
ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set hilo to automatic selection */
|
|
payload = FM_RX_IFFREQ_HILO_AUTOMATIC;
|
|
ret = fmc_send_cmd(fmdev, HILO_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Calculate frequency index and set*/
|
|
payload = (freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
|
|
|
|
ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Read flags - just to clear any pending interrupts if we had */
|
|
ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Enable FR, BL interrupts */
|
|
intr_flag = fmdev->irq_info.mask;
|
|
fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
|
|
payload = fmdev->irq_info.mask;
|
|
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Start tune */
|
|
payload = FM_TUNER_PRESET_MODE;
|
|
ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
goto exit;
|
|
|
|
/* Wait for tune ended interrupt */
|
|
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 int\n",
|
|
jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
|
|
ret = -ETIMEDOUT;
|
|
goto exit;
|
|
}
|
|
|
|
/* Read freq back to confirm */
|
|
ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, &curr_frq, &resp_len);
|
|
if (ret < 0)
|
|
goto exit;
|
|
|
|
curr_frq = be16_to_cpu((__force __be16)curr_frq);
|
|
curr_frq_in_khz = (fmdev->rx.region.bot_freq + ((u32)curr_frq * FM_FREQ_MUL));
|
|
|
|
if (curr_frq_in_khz != freq) {
|
|
pr_info("Frequency is set to (%d) but "
|
|
"requested freq is (%d)\n", curr_frq_in_khz, freq);
|
|
}
|
|
|
|
/* Update local cache */
|
|
fmdev->rx.freq = curr_frq_in_khz;
|
|
exit:
|
|
/* Re-enable default FM interrupts */
|
|
fmdev->irq_info.mask = intr_flag;
|
|
payload = fmdev->irq_info.mask;
|
|
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Reset RDS cache and current station pointers */
|
|
fm_rx_reset_rds_cache(fmdev);
|
|
fm_rx_reset_station_info(fmdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fm_rx_set_channel_spacing(struct fmdev *fmdev, u32 spacing)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (spacing > 0 && spacing <= 50000)
|
|
spacing = FM_CHANNEL_SPACING_50KHZ;
|
|
else if (spacing > 50000 && spacing <= 100000)
|
|
spacing = FM_CHANNEL_SPACING_100KHZ;
|
|
else
|
|
spacing = FM_CHANNEL_SPACING_200KHZ;
|
|
|
|
/* set channel spacing */
|
|
payload = spacing;
|
|
ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmdev->rx.region.chanl_space = spacing * FM_FREQ_MUL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int fm_rx_seek(struct fmdev *fmdev, u32 seek_upward,
|
|
u32 wrap_around, u32 spacing)
|
|
{
|
|
u32 resp_len;
|
|
u16 curr_frq, next_frq, last_frq;
|
|
u16 payload, int_reason, intr_flag;
|
|
u16 offset, space_idx;
|
|
unsigned long timeleft;
|
|
int ret;
|
|
|
|
/* Set channel spacing */
|
|
ret = fm_rx_set_channel_spacing(fmdev, spacing);
|
|
if (ret < 0) {
|
|
fmerr("Failed to set channel spacing\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Read the current frequency from chip */
|
|
ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL,
|
|
sizeof(curr_frq), &curr_frq, &resp_len);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
curr_frq = be16_to_cpu((__force __be16)curr_frq);
|
|
last_frq = (fmdev->rx.region.top_freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
|
|
|
|
/* Check the offset in order to be aligned to the channel spacing*/
|
|
space_idx = fmdev->rx.region.chanl_space / FM_FREQ_MUL;
|
|
offset = curr_frq % space_idx;
|
|
|
|
next_frq = seek_upward ? curr_frq + space_idx /* Seek Up */ :
|
|
curr_frq - space_idx /* Seek Down */ ;
|
|
|
|
/*
|
|
* Add or subtract offset in order to stay aligned to the channel
|
|
* spacing.
|
|
*/
|
|
if ((short)next_frq < 0)
|
|
next_frq = last_frq - offset;
|
|
else if (next_frq > last_frq)
|
|
next_frq = 0 + offset;
|
|
|
|
again:
|
|
/* Set calculated next frequency to perform seek */
|
|
payload = next_frq;
|
|
ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set search direction (0:Seek Down, 1:Seek Up) */
|
|
payload = (seek_upward ? FM_SEARCH_DIRECTION_UP : FM_SEARCH_DIRECTION_DOWN);
|
|
ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Read flags - just to clear any pending interrupts if we had */
|
|
ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Enable FR, BL interrupts */
|
|
intr_flag = fmdev->irq_info.mask;
|
|
fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
|
|
payload = fmdev->irq_info.mask;
|
|
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Start seek */
|
|
payload = FM_TUNER_AUTONOMOUS_SEARCH_MODE;
|
|
ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Wait for tune ended/band limit reached interrupt */
|
|
init_completion(&fmdev->maintask_comp);
|
|
timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
|
|
FM_DRV_RX_SEEK_TIMEOUT);
|
|
if (!timeleft) {
|
|
fmerr("Timeout(%d sec),didn't get tune ended int\n",
|
|
jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
|
|
return -ENODATA;
|
|
}
|
|
|
|
int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT);
|
|
|
|
/* Re-enable default FM interrupts */
|
|
fmdev->irq_info.mask = intr_flag;
|
|
payload = fmdev->irq_info.mask;
|
|
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (int_reason & FM_BL_EVENT) {
|
|
if (wrap_around == 0) {
|
|
fmdev->rx.freq = seek_upward ?
|
|
fmdev->rx.region.top_freq :
|
|
fmdev->rx.region.bot_freq;
|
|
} else {
|
|
fmdev->rx.freq = seek_upward ?
|
|
fmdev->rx.region.bot_freq :
|
|
fmdev->rx.region.top_freq;
|
|
/* Calculate frequency index to write */
|
|
next_frq = (fmdev->rx.freq -
|
|
fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
|
|
goto again;
|
|
}
|
|
} else {
|
|
/* Read freq to know where operation tune operation stopped */
|
|
ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2,
|
|
&curr_frq, &resp_len);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
curr_frq = be16_to_cpu((__force __be16)curr_frq);
|
|
fmdev->rx.freq = (fmdev->rx.region.bot_freq +
|
|
((u32)curr_frq * FM_FREQ_MUL));
|
|
|
|
}
|
|
/* Reset RDS cache and current station pointers */
|
|
fm_rx_reset_rds_cache(fmdev);
|
|
fm_rx_reset_station_info(fmdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int fm_rx_set_volume(struct fmdev *fmdev, u16 vol_to_set)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (vol_to_set > FM_RX_VOLUME_MAX) {
|
|
fmerr("Volume is not within(%d-%d) range\n",
|
|
FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX);
|
|
return -EINVAL;
|
|
}
|
|
vol_to_set *= FM_RX_VOLUME_GAIN_STEP;
|
|
|
|
payload = vol_to_set;
|
|
ret = fmc_send_cmd(fmdev, VOLUME_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmdev->rx.volume = vol_to_set;
|
|
return ret;
|
|
}
|
|
|
|
/* Get volume */
|
|
int fm_rx_get_volume(struct fmdev *fmdev, u16 *curr_vol)
|
|
{
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (curr_vol == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*curr_vol = fmdev->rx.volume / FM_RX_VOLUME_GAIN_STEP;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* To get current band's bottom and top frequency */
|
|
int fm_rx_get_band_freq_range(struct fmdev *fmdev, u32 *bot_freq, u32 *top_freq)
|
|
{
|
|
if (bot_freq != NULL)
|
|
*bot_freq = fmdev->rx.region.bot_freq;
|
|
|
|
if (top_freq != NULL)
|
|
*top_freq = fmdev->rx.region.top_freq;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Returns current band index (0-Europe/US; 1-Japan) */
|
|
void fm_rx_get_region(struct fmdev *fmdev, u8 *region)
|
|
{
|
|
*region = fmdev->rx.region.fm_band;
|
|
}
|
|
|
|
/* Sets band (0-Europe/US; 1-Japan) */
|
|
int fm_rx_set_region(struct fmdev *fmdev, u8 region_to_set)
|
|
{
|
|
u16 payload;
|
|
u32 new_frq = 0;
|
|
int ret;
|
|
|
|
if (region_to_set != FM_BAND_EUROPE_US &&
|
|
region_to_set != FM_BAND_JAPAN) {
|
|
fmerr("Invalid band\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (fmdev->rx.region.fm_band == region_to_set) {
|
|
fmerr("Requested band is already configured\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Send cmd to set the band */
|
|
payload = (u16)region_to_set;
|
|
ret = fmc_send_cmd(fmdev, BAND_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmc_update_region_info(fmdev, region_to_set);
|
|
|
|
/* Check whether current RX frequency is within band boundary */
|
|
if (fmdev->rx.freq < fmdev->rx.region.bot_freq)
|
|
new_frq = fmdev->rx.region.bot_freq;
|
|
else if (fmdev->rx.freq > fmdev->rx.region.top_freq)
|
|
new_frq = fmdev->rx.region.top_freq;
|
|
|
|
if (new_frq) {
|
|
fmdbg("Current freq is not within band limit boundary,"
|
|
"switching to %d KHz\n", new_frq);
|
|
/* Current RX frequency is not in range. So, update it */
|
|
ret = fm_rx_set_freq(fmdev, new_frq);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Reads current mute mode (Mute Off/On/Attenuate)*/
|
|
int fm_rx_get_mute_mode(struct fmdev *fmdev, u8 *curr_mute_mode)
|
|
{
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (curr_mute_mode == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*curr_mute_mode = fmdev->rx.mute_mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fm_config_rx_mute_reg(struct fmdev *fmdev)
|
|
{
|
|
u16 payload, muteval;
|
|
int ret;
|
|
|
|
muteval = 0;
|
|
switch (fmdev->rx.mute_mode) {
|
|
case FM_MUTE_ON:
|
|
muteval = FM_RX_AC_MUTE_MODE;
|
|
break;
|
|
|
|
case FM_MUTE_OFF:
|
|
muteval = FM_RX_UNMUTE_MODE;
|
|
break;
|
|
|
|
case FM_MUTE_ATTENUATE:
|
|
muteval = FM_RX_SOFT_MUTE_FORCE_MODE;
|
|
break;
|
|
}
|
|
if (fmdev->rx.rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON)
|
|
muteval |= FM_RX_RF_DEP_MODE;
|
|
else
|
|
muteval &= ~FM_RX_RF_DEP_MODE;
|
|
|
|
payload = muteval;
|
|
ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Configures mute mode (Mute Off/On/Attenuate) */
|
|
int fm_rx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset)
|
|
{
|
|
u8 org_state;
|
|
int ret;
|
|
|
|
if (fmdev->rx.mute_mode == mute_mode_toset)
|
|
return 0;
|
|
|
|
org_state = fmdev->rx.mute_mode;
|
|
fmdev->rx.mute_mode = mute_mode_toset;
|
|
|
|
ret = fm_config_rx_mute_reg(fmdev);
|
|
if (ret < 0) {
|
|
fmdev->rx.mute_mode = org_state;
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Gets RF dependent soft mute mode enable/disable status */
|
|
int fm_rx_get_rfdepend_softmute(struct fmdev *fmdev, u8 *curr_mute_mode)
|
|
{
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (curr_mute_mode == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*curr_mute_mode = fmdev->rx.rf_depend_mute;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Sets RF dependent soft mute mode */
|
|
int fm_rx_set_rfdepend_softmute(struct fmdev *fmdev, u8 rfdepend_mute)
|
|
{
|
|
u8 org_state;
|
|
int ret;
|
|
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_ON &&
|
|
rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_OFF) {
|
|
fmerr("Invalid RF dependent soft mute\n");
|
|
return -EINVAL;
|
|
}
|
|
if (fmdev->rx.rf_depend_mute == rfdepend_mute)
|
|
return 0;
|
|
|
|
org_state = fmdev->rx.rf_depend_mute;
|
|
fmdev->rx.rf_depend_mute = rfdepend_mute;
|
|
|
|
ret = fm_config_rx_mute_reg(fmdev);
|
|
if (ret < 0) {
|
|
fmdev->rx.rf_depend_mute = org_state;
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Returns the signal strength level of current channel */
|
|
int fm_rx_get_rssi_level(struct fmdev *fmdev, u16 *rssilvl)
|
|
{
|
|
__be16 curr_rssi_lel;
|
|
u32 resp_len;
|
|
int ret;
|
|
|
|
if (rssilvl == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
/* Read current RSSI level */
|
|
ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, REG_RD, NULL, 2,
|
|
&curr_rssi_lel, &resp_len);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*rssilvl = be16_to_cpu(curr_rssi_lel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Sets the signal strength level that once reached
|
|
* will stop the auto search process
|
|
*/
|
|
int fm_rx_set_rssi_threshold(struct fmdev *fmdev, short rssi_lvl_toset)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN ||
|
|
rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) {
|
|
fmerr("Invalid RSSI threshold level\n");
|
|
return -EINVAL;
|
|
}
|
|
payload = (u16)rssi_lvl_toset;
|
|
ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmdev->rx.rssi_threshold = rssi_lvl_toset;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Returns current RX RSSI threshold value */
|
|
int fm_rx_get_rssi_threshold(struct fmdev *fmdev, short *curr_rssi_lvl)
|
|
{
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (curr_rssi_lvl == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*curr_rssi_lvl = fmdev->rx.rssi_threshold;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Sets RX stereo/mono modes */
|
|
int fm_rx_set_stereo_mono(struct fmdev *fmdev, u16 mode)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) {
|
|
fmerr("Invalid mode\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Set stereo/mono mode */
|
|
payload = (u16)mode;
|
|
ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set stereo blending mode */
|
|
payload = FM_STEREO_SOFT_BLEND;
|
|
ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Gets current RX stereo/mono mode */
|
|
int fm_rx_get_stereo_mono(struct fmdev *fmdev, u16 *mode)
|
|
{
|
|
__be16 curr_mode;
|
|
u32 resp_len;
|
|
int ret;
|
|
|
|
if (mode == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_RD, NULL, 2,
|
|
&curr_mode, &resp_len);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*mode = be16_to_cpu(curr_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Choose RX de-emphasis filter mode (50us/75us) */
|
|
int fm_rx_set_deemphasis_mode(struct fmdev *fmdev, u16 mode)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (mode != FM_RX_EMPHASIS_FILTER_50_USEC &&
|
|
mode != FM_RX_EMPHASIS_FILTER_75_USEC) {
|
|
fmerr("Invalid rx de-emphasis mode (%d)\n", mode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
payload = mode;
|
|
ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmdev->rx.deemphasis_mode = mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Gets current RX de-emphasis filter mode */
|
|
int fm_rx_get_deemph_mode(struct fmdev *fmdev, u16 *curr_deemphasis_mode)
|
|
{
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (curr_deemphasis_mode == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*curr_deemphasis_mode = fmdev->rx.deemphasis_mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Enable/Disable RX RDS */
|
|
int fm_rx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) {
|
|
fmerr("Invalid rds option\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (rds_en_dis == FM_RDS_ENABLE
|
|
&& fmdev->rx.rds.flag == FM_RDS_DISABLE) {
|
|
/* Turn on RX RDS and RDS circuit */
|
|
payload = FM_RX_PWR_SET_FM_AND_RDS_BLK_ON;
|
|
ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Clear and reset RDS FIFO */
|
|
payload = FM_RX_RDS_FLUSH_FIFO;
|
|
ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Read flags - just to clear any pending interrupts. */
|
|
ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2,
|
|
NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set RDS FIFO threshold value */
|
|
payload = FM_RX_RDS_FIFO_THRESHOLD;
|
|
ret = fmc_send_cmd(fmdev, RDS_MEM_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Enable RDS interrupt */
|
|
fmdev->irq_info.mask |= FM_RDS_EVENT;
|
|
payload = fmdev->irq_info.mask;
|
|
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0) {
|
|
fmdev->irq_info.mask &= ~FM_RDS_EVENT;
|
|
return ret;
|
|
}
|
|
|
|
/* Update our local flag */
|
|
fmdev->rx.rds.flag = FM_RDS_ENABLE;
|
|
} else if (rds_en_dis == FM_RDS_DISABLE
|
|
&& fmdev->rx.rds.flag == FM_RDS_ENABLE) {
|
|
/* Turn off RX RDS */
|
|
payload = FM_RX_PWR_SET_FM_ON_RDS_OFF;
|
|
ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Reset RDS pointers */
|
|
fmdev->rx.rds.last_blk_idx = 0;
|
|
fmdev->rx.rds.wr_idx = 0;
|
|
fmdev->rx.rds.rd_idx = 0;
|
|
fm_rx_reset_station_info(fmdev);
|
|
|
|
/* Update RDS local cache */
|
|
fmdev->irq_info.mask &= ~(FM_RDS_EVENT);
|
|
fmdev->rx.rds.flag = FM_RDS_DISABLE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Returns current RX RDS enable/disable status */
|
|
int fm_rx_get_rds_mode(struct fmdev *fmdev, u8 *curr_rds_en_dis)
|
|
{
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (curr_rds_en_dis == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*curr_rds_en_dis = fmdev->rx.rds.flag;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Sets RDS operation mode (RDS/RDBS) */
|
|
int fm_rx_set_rds_system(struct fmdev *fmdev, u8 rds_mode)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (rds_mode != FM_RDS_SYSTEM_RDS && rds_mode != FM_RDS_SYSTEM_RBDS) {
|
|
fmerr("Invalid rds mode\n");
|
|
return -EINVAL;
|
|
}
|
|
/* Set RDS operation mode */
|
|
payload = (u16)rds_mode;
|
|
ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmdev->rx.rds_mode = rds_mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Configures Alternate Frequency switch mode */
|
|
int fm_rx_set_af_switch(struct fmdev *fmdev, u8 af_mode)
|
|
{
|
|
u16 payload;
|
|
int ret;
|
|
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (af_mode != FM_RX_RDS_AF_SWITCH_MODE_ON &&
|
|
af_mode != FM_RX_RDS_AF_SWITCH_MODE_OFF) {
|
|
fmerr("Invalid af mode\n");
|
|
return -EINVAL;
|
|
}
|
|
/* Enable/disable low RSSI interrupt based on af_mode */
|
|
if (af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
|
|
fmdev->irq_info.mask |= FM_LEV_EVENT;
|
|
else
|
|
fmdev->irq_info.mask &= ~FM_LEV_EVENT;
|
|
|
|
payload = fmdev->irq_info.mask;
|
|
ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
|
|
sizeof(payload), NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmdev->rx.af_mode = af_mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Returns Alternate Frequency switch status */
|
|
int fm_rx_get_af_switch(struct fmdev *fmdev, u8 *af_mode)
|
|
{
|
|
if (fmdev->curr_fmmode != FM_MODE_RX)
|
|
return -EPERM;
|
|
|
|
if (af_mode == NULL) {
|
|
fmerr("Invalid memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*af_mode = fmdev->rx.af_mode;
|
|
|
|
return 0;
|
|
}
|