diff options
Diffstat (limited to 'drivers/media/radio/wl128x/fmdrv_rx.c')
| -rw-r--r-- | drivers/media/radio/wl128x/fmdrv_rx.c | 820 |
1 files changed, 820 insertions, 0 deletions
diff --git a/drivers/media/radio/wl128x/fmdrv_rx.c b/drivers/media/radio/wl128x/fmdrv_rx.c new file mode 100644 index 000000000..419cf2e03 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_rx.c @@ -0,0 +1,820 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * 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> + */ + +#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; +} |