[PATCH/RFC 2/6] drivers:staging:ti-st: Sources for FM RX
in [Kernel]
|
Prev: [PATCH/RFC 4/6] drivers:staging:ti-st: Sources for FM V4L2 interfaces
Next: [PATCH] [CPUFREQ] acpi-cpufreq: add missing __percpu markup
From: raja_mani on 13 Aug 2010 10:00 From: Raja-Mani <x0102026(a)ti.com> This has implementation for FM RX functionality. It communicates with FM V4l2 module and FM common module. Signed-off-by: Raja-Mani <x0102026(a)ti.com> Signed-off-by: Pramodh AG <pramodh_ag(a)ti.com> Signed-off-by: Pavan Savoy <pavan_savoy(a)ti.com> --- drivers/staging/ti-st/fmdrv_rx.c | 805 ++++++++++++++++++++++++++++++++++++++ drivers/staging/ti-st/fmdrv_rx.h | 56 +++ 2 files changed, 861 insertions(+), 0 deletions(-) create mode 100644 drivers/staging/ti-st/fmdrv_rx.c create mode 100644 drivers/staging/ti-st/fmdrv_rx.h diff --git a/drivers/staging/ti-st/fmdrv_rx.c b/drivers/staging/ti-st/fmdrv_rx.c new file mode 100644 index 0000000..8d5b9e9 --- /dev/null +++ b/drivers/staging/ti-st/fmdrv_rx.c @@ -0,0 +1,805 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * This sub-module of FM driver implements FM RX functionality. + * + * Copyright (C) 2010 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. + * + * 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 fmdrv_ops *fmdev) +{ + fmdev->rx.rds.flag = FM_RDS_DISABLE; + fmdev->rx.rds.last_block_index = 0; + fmdev->rx.rds.wr_index = 0; + fmdev->rx.rds.rd_index = 0; + + if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) + fmdev->irq_info.mask |= FM_LEV_EVENT; + +} + +void fm_rx_reset_curr_station_info(struct fmdrv_ops *fmdev) +{ + fmdev->rx.cur_station_info.picode = FM_NO_PI_CODE; + fmdev->rx.cur_station_info.no_of_items_in_afcache = 0; + fmdev->rx.cur_station_info.af_list_max = 0; +} + +int fm_rx_set_frequency(struct fmdrv_ops *fmdev, unsigned int freq_to_set) +{ + unsigned long timeleft; + unsigned short payload, curr_frq, frq_index; + unsigned int curr_frq_in_khz; + int ret, resp_len; + + if (fmdev->curr_fmmode != FM_MODE_RX) { + ret = -EPERM; + goto exit; + } + + if (freq_to_set < fmdev->rx.region.bottom_frequency || + freq_to_set > fmdev->rx.region.top_frequency) { + pr_err("(fmdrv): Invalid frequency %d", freq_to_set); + ret = -EINVAL; + goto exit; + } + /* Set audio enable */ + FM_STORE_LE16_TO_BE16(payload, FM_RX_FM_AUDIO_ENABLE_I2S_AND_ANALOG); + ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Set hilo to automatic selection */ + FM_STORE_LE16_TO_BE16(payload, FM_RX_IFFREQ_HILO_AUTOMATIC); + ret = fmc_send_cmd(fmdev, HILO_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Calculate frequency index to write */ + frq_index = (freq_to_set - fmdev->rx.region.bottom_frequency) / + fmdev->rx.region.channel_spacing; + + /* Set frequency index */ + FM_STORE_LE16_TO_BE16(payload, frq_index); + ret = fmc_send_cmd(fmdev, FREQ_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Read flags - just to clear any pending interrupts if we had */ + ret = fmc_send_cmd(fmdev, FLAG_GET, NULL, 2, + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Enable FR, BL interrupts */ + fmdev->irq_info.mask |= (FM_FR_EVENT | FM_BL_EVENT); + FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Start tune */ + FM_STORE_LE16_TO_BE16(payload, FM_TUNER_PRESET_MODE); + ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Wait for tune ended interrupt */ + init_completion(&fmdev->maintask_completion); + timeleft = wait_for_completion_timeout(&fmdev->maintask_completion, + FM_DRV_TX_TIMEOUT); + if (!timeleft) { + pr_err("(fmdrv): Timeout(%d sec),didn't get tune ended int", + jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); + ret = -ETIMEDOUT; + goto exit; + } + + /* Read freq back to confirm */ + ret = fmc_send_cmd(fmdev, FREQ_GET, NULL, 2, + &fmdev->maintask_completion, &curr_frq, &resp_len); + FM_CHECK_SEND_CMD_STATUS(ret); + + curr_frq = FM_BE16_TO_LE16(curr_frq); + curr_frq_in_khz = (fmdev->rx.region.bottom_frequency + + ((unsigned int)curr_frq * fmdev->rx.region.channel_spacing)); + + /* Re-enable default FM interrupts */ + fmdev->irq_info.mask &= ~(FM_FR_EVENT | FM_BL_EVENT); + FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + if (curr_frq_in_khz != freq_to_set) { + pr_err("(fmdrv): Current chip frequency(%d) is not matching" + " with requested frequency(%d)", curr_frq_in_khz, + freq_to_set); + ret = -EAGAIN; + goto exit; + } + + /* Update local cache */ + fmdev->rx.curr_freq = curr_frq_in_khz; + + /* Reset RDS cache and current station pointers */ + fm_rx_reset_rds_cache(fmdev); + fm_rx_reset_curr_station_info(fmdev); + + /* Do we need to reset anything else? */ +exit: + return ret; +} + +int fm_rx_seek(struct fmdrv_ops *fmdev, unsigned int seek_upward, + unsigned int wrap_around) +{ + int resp_len; + unsigned short curr_frq, next_frq, last_frq; + unsigned short payload, int_reason; + char offset; + unsigned long timeleft; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) { + ret = -EPERM; + goto exit; + } + + /* Read the current frequency from chip */ + ret = fmc_send_cmd(fmdev, FREQ_GET, NULL, sizeof(curr_frq), + &fmdev->maintask_completion, &curr_frq, &resp_len); + FM_CHECK_SEND_CMD_STATUS(ret); + + curr_frq = FM_BE16_TO_LE16(curr_frq); + + last_frq = + (fmdev->rx.region.top_frequency - fmdev->rx.region.bottom_frequency) + / fmdev->rx.region.channel_spacing; + + /* Check the offset in order to be aligned to the 100KHz steps */ + offset = curr_frq % 2; + + next_frq = seek_upward ? curr_frq + 2 /* Seek Up */ : + curr_frq - 2 /* Seek Down */ ; + + /* Add or subtract offset (0/1) in order + * to stay aligned to the 100KHz steps + */ + if ((short)next_frq < 0) + next_frq = last_frq - offset; + else if (next_frq > last_frq) + next_frq = 0 + offset; + + /* Set calculated next frequency to perform seek */ + FM_STORE_LE16_TO_BE16(payload, next_frq); + ret = fmc_send_cmd(fmdev, FREQ_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Set search direction (0:Seek Down, 1:Seek Up) */ + FM_STORE_LE16_TO_BE16(payload, (seek_upward ? FM_SEARCH_DIRECTION_UP : + FM_SEARCH_DIRECTION_DOWN)); + ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Read flags - just to clear any pending interrupts if we had */ + ret = fmc_send_cmd(fmdev, FLAG_GET, NULL, 2, + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Enable FR, BL interrupts */ + fmdev->irq_info.mask |= (FM_FR_EVENT | FM_BL_EVENT); + FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Start seek */ + FM_STORE_LE16_TO_BE16(payload, FM_TUNER_AUTONOMOUS_SEARCH_MODE); + ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Wait for tune ended/band limit reached interrupt */ + init_completion(&fmdev->maintask_completion); + timeleft = wait_for_completion_timeout(&fmdev->maintask_completion, + FM_DRV_RX_SEEK_TIMEOUT); + if (!timeleft) { + pr_err("(fmdrv): Timeout(%d sec),didn't get tune ended int", + jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000); + ret = -ETIMEDOUT; + goto exit; + } + int_reason = fmdev->irq_info.flag & 0x3; + + /* Re-enable default FM interrupts */ + fmdev->irq_info.mask &= ~(FM_FR_EVENT | FM_BL_EVENT); + FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Read freq to know where operation tune operation stopped */ + ret = fmc_send_cmd(fmdev, FREQ_GET, NULL, 2, + &fmdev->maintask_completion, &curr_frq, &resp_len); + FM_CHECK_SEND_CMD_STATUS(ret); + + curr_frq = FM_BE16_TO_LE16(curr_frq); + fmdev->rx.curr_freq = (fmdev->rx.region.bottom_frequency + + ((unsigned int)curr_frq * + fmdev->rx.region.channel_spacing)); + + /* Reset RDS cache and current station pointers */ + fm_rx_reset_rds_cache(fmdev); + fm_rx_reset_curr_station_info(fmdev); + + /* Return error if band limit is reached */ + if (int_reason & FM_BL_EVENT) { + pr_info("(fmdrv): band limit reached\n"); + ret = -EAGAIN; + } +exit: + return ret; +} + +int fm_rx_set_volume(struct fmdrv_ops *fmdev, unsigned short vol_to_set) +{ + unsigned short payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (vol_to_set > FM_RX_VOLUME_MAX) { + pr_err("(fmdrv): Volume is not within(%d-%d) range", + FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX); + return -EINVAL; + } + vol_to_set *= FM_RX_VOLUME_GAIN_STEP; + + FM_STORE_LE16_TO_BE16(payload, vol_to_set); + ret = fmc_send_cmd(fmdev, VOLUME_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + fmdev->rx.curr_volume = vol_to_set; + return ret; +} + +/* Get volume */ +int fm_rx_get_volume(struct fmdrv_ops *fmdev, unsigned short *curr_vol) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_vol == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + *curr_vol = fmdev->rx.curr_volume / FM_RX_VOLUME_GAIN_STEP; + return 0; +} + +/* To get current band's bottom and top frequency */ +int fm_rx_get_currband_lowhigh_freq(struct fmdrv_ops *fmdev, + unsigned int *bottom_frequency, + unsigned int *top_frequency) +{ + if (bottom_frequency != NULL) + *bottom_frequency = fmdev->rx.region.bottom_frequency; + + if (top_frequency != NULL) + *top_frequency = fmdev->rx.region.top_frequency; + + return 0; +} + +/* Sets band (0-Europe/US; 1-Japan) */ +int fm_rx_set_region(struct fmdrv_ops *fmdev, + unsigned char region_to_set) +{ + unsigned short payload; + unsigned int new_frq; + int ret = -EPERM; + + if (fmdev->curr_fmmode != FM_MODE_RX) + goto exit; + + if (region_to_set != FM_BAND_EUROPE_US && + region_to_set != FM_BAND_JAPAN) { + pr_err("(fmdrv): Invalid band\n"); + ret = -EINVAL; + goto exit; + } + if (fmdev->rx.region.region_index == region_to_set) { + pr_err("(fmdrv): Requested band is already configured\n"); + goto exit; + } + /* Send cmd to set the band */ + FM_STORE_LE16_TO_BE16(payload, (unsigned short)region_to_set); + ret = fmc_send_cmd(fmdev, RX_BAND_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + fmc_update_region_info(fmdev, region_to_set); + + /* Check whether current RX frequency is within band boundary */ + if (fmdev->curr_fmmode == FM_MODE_RX) { + new_frq = 0; + if (fmdev->rx.curr_freq < fmdev->rx.region.bottom_frequency) + new_frq = fmdev->rx.region.bottom_frequency; + else if (fmdev->rx.curr_freq > fmdev->rx.region.top_frequency) + new_frq = fmdev->rx.region.top_frequency; + + if (new_frq) { + pr_info("(fmdrv): " + "Current freq is not within band limit boundary," + "switching to %d KHz", new_frq); + /* Current RX frequency is not + * within boundary. So, update it + */ + ret = fm_rx_set_frequency(fmdev, new_frq); + } + } +exit: + return ret; +} + +/* Reads current mute mode (Mute Off/On/Attenuate)*/ +int fm_rx_get_mute_mode(struct fmdrv_ops *fmdev, + unsigned char *curr_mute_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_mute_mode == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + *curr_mute_mode = fmdev->rx.curr_mute_mode; + return 0; +} + +static int __fm_config_rx_mute_reg(struct fmdrv_ops *fmdev) +{ + unsigned short payload, muteval; + int ret; + + muteval = 0; + switch (fmdev->rx.curr_mute_mode) { + case FM_MUTE_ON: + muteval = FM_RX_MUTE_AC_MUTE_MODE; + break; + case FM_MUTE_OFF: + muteval = FM_RX_MUTE_UNMUTE_MODE; + break; + case FM_MUTE_ATTENUATE: + muteval = FM_RX_MUTE_SOFT_MUTE_FORCE_MODE; + break; + } + if (fmdev->rx.curr_rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON) + muteval |= FM_RX_MUTE_RF_DEP_MODE; + else + muteval &= ~FM_RX_MUTE_RF_DEP_MODE; + + FM_STORE_LE16_TO_BE16(payload, muteval); + ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + return 0; +} + +/* Configures mute mode (Mute Off/On/Attenuate) */ +int fm_rx_set_mute_mode(struct fmdrv_ops *fmdev, + unsigned char mute_mode_toset) +{ + unsigned char org_state; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (fmdev->rx.curr_mute_mode == mute_mode_toset) + return 0; + + org_state = fmdev->rx.curr_mute_mode; + fmdev->rx.curr_mute_mode = mute_mode_toset; + + ret = __fm_config_rx_mute_reg(fmdev); + if (ret < 0) { + fmdev->rx.curr_mute_mode = org_state; + return ret; + } + return 0; +} + +/* Gets RF dependent soft mute mode enable/disable status */ +int fm_rx_get_rfdepend_softmute(struct fmdrv_ops *fmdev, + unsigned char *curr_mute_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + + if (curr_mute_mode == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + *curr_mute_mode = fmdev->rx.curr_rf_depend_mute; + return 0; +} + +/* Sets RF dependent soft mute mode */ +int fm_rx_set_rfdepend_softmute(struct fmdrv_ops *fmdev, + unsigned char rfdepend_mute) +{ + unsigned char 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) { + pr_err("(fmdrv): Invalid RF dependent soft mute"); + return -EINVAL; + } + if (fmdev->rx.curr_rf_depend_mute == rfdepend_mute) + return 0; + + org_state = fmdev->rx.curr_rf_depend_mute; + fmdev->rx.curr_rf_depend_mute = rfdepend_mute; + + ret = __fm_config_rx_mute_reg(fmdev); + if (ret < 0) { + fmdev->rx.curr_rf_depend_mute = org_state; + return ret; + } + return 0; +} + +/* Returns the signal strength level of current channel */ +int fm_rx_get_rssi_level(struct fmdrv_ops *fmdev, + unsigned short *rssilvl) +{ + unsigned short curr_rssi_lel; + int resp_len; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (rssilvl == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + /* Read current RSSI level */ + ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, NULL, 2, + &fmdev->maintask_completion, &curr_rssi_lel, &resp_len); + FM_CHECK_SEND_CMD_STATUS(ret); + + *rssilvl = FM_BE16_TO_LE16(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 fmdrv_ops *fmdev, + short rssi_lvl_toset) +{ + unsigned short payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN || + rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) { + pr_err("(fmdrv): Invalid RSSI threshold level"); + return -EINVAL; + } + FM_STORE_LE16_TO_BE16(payload, (unsigned short)rssi_lvl_toset); + ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + fmdev->rx.curr_rssi_threshold = rssi_lvl_toset; + return 0; +} + +/* Returns current RX RSSI threshold value */ +int fm_rx_get_rssi_threshold(struct fmdrv_ops *fmdev, short *curr_rssi_lvl) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_rssi_lvl == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + *curr_rssi_lvl = fmdev->rx.curr_rssi_threshold; + return 0; +} + +/* Sets RX stereo/mono modes */ +int fm_rx_set_stereo_mono(struct fmdrv_ops *fmdev, unsigned short mode) +{ + unsigned short payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) { + pr_err("(fmdrv): Invalid mode"); + return -EINVAL; + } + /* Set stereo/mono mode */ + FM_STORE_LE16_TO_BE16(payload, (unsigned short)mode); + ret = fmc_send_cmd(fmdev, MOST_MODE_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Set stereo blending mode */ + FM_STORE_LE16_TO_BE16(payload, FM_STEREO_SOFT_BLEND); + ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + return 0; +} + +/* Gets current RX stereo/mono mode */ +int fm_rx_get_stereo_mono(struct fmdrv_ops *fmdev, unsigned short *mode) +{ + unsigned short curr_mode; + int ret, resp_len; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (mode == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + ret = fmc_send_cmd(fmdev, MOST_MODE_GET, NULL, 2, + &fmdev->maintask_completion, &curr_mode, &resp_len); + FM_CHECK_SEND_CMD_STATUS(ret); + + *mode = FM_BE16_TO_LE16(curr_mode); + return 0; +} + +/* Choose RX de-emphasis filter mode (50us/75us) */ +int fm_rx_set_deemphasis_mode(struct fmdrv_ops *fmdev, unsigned short mode) +{ + unsigned short 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) { + pr_err("(fmdrv): Invalid rx de-emphasis mode"); + return -EINVAL; + } + FM_STORE_LE16_TO_BE16(payload, mode); + ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + return 0; +} + +/* Gets current RX de-emphasis filter mode */ +int fm_rx_get_deemphasis_mode(struct fmdrv_ops *fmdev, + unsigned short *curr_deemphasis_mode) +{ + unsigned short curr_mode; + int ret, resp_len; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_deemphasis_mode == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + ret = fmc_send_cmd(fmdev, DEMPH_MODE_GET, NULL, 2, + &fmdev->maintask_completion, &curr_mode, &resp_len); + FM_CHECK_SEND_CMD_STATUS(ret); + + *curr_deemphasis_mode = FM_BE16_TO_LE16(curr_mode); + return 0; +} + +/* Enable/Disable RX RDS */ +int fm_rx_set_rds_mode(struct fmdrv_ops *fmdev, unsigned char rds_en_dis) +{ + unsigned short payload; + int ret; + + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) { + pr_err("(fmdrv): Invalid rds option"); + return -EINVAL; + } + if (rds_en_dis == FM_RDS_ENABLE + && fmdev->rx.rds.flag == FM_RDS_DISABLE) { + /* Turn on RX RDS */ + /* Turn on RDS circuit */ + FM_STORE_LE16_TO_BE16(payload, + FM_RX_POWET_SET_FM_AND_RDS_BLK_ON); + ret = fmc_send_cmd(fmdev, POWER_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Clear and rest RDS FIFO */ + FM_STORE_LE16_TO_BE16(payload, FM_RX_RDS_FLUSH_FIFO); + ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, &payload, + sizeof(payload), &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Read flags - just to clear any + * pending interrupts if we had + */ + ret = fmc_send_cmd(fmdev, FLAG_GET, NULL, 2, + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Set RDS FIFO threshold value */ + FM_STORE_LE16_TO_BE16(payload, FM_RX_RDS_FIFO_THRESHOLD); + ret = fmc_send_cmd(fmdev, RDS_MEM_SET, &payload, + sizeof(payload), &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Enable RDS interrupt */ + fmdev->irq_info.mask |= FM_RDS_EVENT; + FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, + sizeof(payload), &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(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 */ + /* Turn off RDS circuit */ + FM_STORE_LE16_TO_BE16(payload, FM_RX_POWER_SET_FM_ON_RDS_OFF); + ret = fmc_send_cmd(fmdev, POWER_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + /* Reset RDS pointers */ + fmdev->rx.rds.last_block_index = 0; + fmdev->rx.rds.wr_index = 0; + fmdev->rx.rds.rd_index = 0; + fm_rx_reset_curr_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 fmdrv_ops *fmdev, + unsigned char *curr_rds_en_dis) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (curr_rds_en_dis == NULL) { + pr_err("(fmdrv): Invalid memory"); + 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 fmdrv_ops *fmdev, unsigned char rds_mode) +{ + unsigned short 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) { + pr_err("(fmdrv): Invalid rds mode"); + return -EINVAL; + } + /* Set RDS operation mode */ + FM_STORE_LE16_TO_BE16(payload, (unsigned short)rds_mode); + ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + fmdev->rx.rds_mode = rds_mode; + return 0; +} + +/* Returns current RDS operation mode */ +int fm_rx_get_rds_system(struct fmdrv_ops *fmdev, + unsigned char *rds_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (rds_mode == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + *rds_mode = fmdev->rx.rds_mode; + return 0; +} + +/* Configures Alternate Frequency switch mode */ +int fm_rx_set_af_switch(struct fmdrv_ops *fmdev, unsigned char af_mode) +{ + unsigned short 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) { + pr_err("(fmdrv): Invalid af mode"); + 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; + + FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload), + &fmdev->maintask_completion, NULL, NULL); + FM_CHECK_SEND_CMD_STATUS(ret); + + fmdev->rx.af_mode = af_mode; + return 0; +} + +/* Returns Alternate Frequency switch status */ +int fm_rx_get_af_switch(struct fmdrv_ops *fmdev, unsigned char *af_mode) +{ + if (fmdev->curr_fmmode != FM_MODE_RX) + return -EPERM; + + if (af_mode == NULL) { + pr_err("(fmdrv): Invalid memory"); + return -ENOMEM; + } + *af_mode = fmdev->rx.af_mode; + return 0; +} diff --git a/drivers/staging/ti-st/fmdrv_rx.h b/drivers/staging/ti-st/fmdrv_rx.h new file mode 100644 index 0000000..2ca3eda --- /dev/null +++ b/drivers/staging/ti-st/fmdrv_rx.h @@ -0,0 +1,56 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * FM RX module header. + * + * Copyright (C) 2010 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. + * + * 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 + * + */ + +#ifndef _FMDRV_RX_H +#define _FMDRV_RX_H + +int fm_rx_set_frequency(struct fmdrv_ops*, unsigned int); +int fm_rx_set_mute_mode(struct fmdrv_ops*, unsigned char); +int fm_rx_set_stereo_mono(struct fmdrv_ops*, unsigned short); +int fm_rx_set_rds_mode(struct fmdrv_ops*, unsigned char); +int fm_rx_set_rds_system(struct fmdrv_ops *, unsigned char); +int fm_rx_set_volume(struct fmdrv_ops*, unsigned short); +int fm_rx_set_rssi_threshold(struct fmdrv_ops*, short); +int fm_rx_set_region(struct fmdrv_ops*, unsigned char); +int fm_rx_set_rfdepend_softmute(struct fmdrv_ops *, unsigned char); +int fm_rx_set_deemphasis_mode(struct fmdrv_ops *, unsigned short); +int fm_rx_set_af_switch(struct fmdrv_ops *, unsigned char); + +void fm_rx_reset_rds_cache(struct fmdrv_ops *); +void fm_rx_reset_curr_station_info(struct fmdrv_ops *); + +int fm_rx_seek(struct fmdrv_ops*, unsigned int, unsigned int); + +int fm_rx_get_rds_mode(struct fmdrv_ops*, unsigned char*); +int fm_rx_get_rds_system(struct fmdrv_ops *, unsigned char*); +int fm_rx_get_mute_mode(struct fmdrv_ops*, unsigned char*); +int fm_rx_get_volume(struct fmdrv_ops*, unsigned short*); +int fm_rx_get_currband_lowhigh_freq(struct fmdrv_ops*, + unsigned int*, unsigned int*); +int fm_rx_get_stereo_mono(struct fmdrv_ops *, unsigned short*); +int fm_rx_get_rssi_level(struct fmdrv_ops *, unsigned short*); +int fm_rx_get_rssi_threshold(struct fmdrv_ops *, short*); +int fm_rx_get_rfdepend_softmute(struct fmdrv_ops *, unsigned char*); +int fm_rx_get_deemphasis_mode(struct fmdrv_ops *, unsigned short*); +int fm_rx_get_af_switch(struct fmdrv_ops *, unsigned char *); + +#endif + -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |