lkml.org 
[lkml]   [2010]   [Dec]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[RFC V8 4/7] drivers:media:radio: wl128x: FM driver RX sources
    Date
    From: Manjunatha Halli <manjunatha_halli@ti.com>

    This has implementation for FM RX functionality.
    It communicates with FM V4l2 module and FM common module

    Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
    ---
    drivers/media/radio/wl128x/fmdrv_rx.c | 904 +++++++++++++++++++++++++++++++++
    drivers/media/radio/wl128x/fmdrv_rx.h | 59 +++
    2 files changed, 963 insertions(+), 0 deletions(-)
    create mode 100644 drivers/media/radio/wl128x/fmdrv_rx.c
    create mode 100644 drivers/media/radio/wl128x/fmdrv_rx.h

    diff --git a/drivers/media/radio/wl128x/fmdrv_rx.c b/drivers/media/radio/wl128x/fmdrv_rx.c
    new file mode 100644
    index 0000000..c0a29e7
    --- /dev/null
    +++ b/drivers/media/radio/wl128x/fmdrv_rx.c
    @@ -0,0 +1,904 @@
    +/*
    + * FM Driver for Connectivity chip of Texas Instruments.
    + * This sub-module of FM driver implements FM RX functionality.
    + *
    + * Copyright (C) 2010 Texas Instruments
    + * Author: Raja Mani <raja_mani@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 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, intr_flag;
    + unsigned int curr_frq_in_khz;
    + int ret, resp_len;
    +
    + if (fmdev->curr_fmmode != FM_MODE_RX)
    + return -EPERM;
    +
    + if (freq_to_set < fmdev->rx.region.bottom_frequency ||
    + freq_to_set > fmdev->rx.region.top_frequency) {
    + pr_err("(fmdrv): Invalid frequency %d\n", freq_to_set);
    + return -EINVAL;
    + }
    +
    + /* Set audio enable */
    + payload = FM_RX_FM_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 to write */
    + frq_index = (freq_to_set - fmdev->rx.region.bottom_frequency) /
    + FM_FREQ_MUL;
    +
    + /* Set frequency index */
    + payload = frq_index;
    + 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)
    + return 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\n",
    + jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
    + return -ETIMEDOUT;
    + }
    +
    + /* Read freq back to confirm */
    + 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(curr_frq);
    + curr_frq_in_khz = (fmdev->rx.region.bottom_frequency
    + + ((unsigned int)curr_frq * FM_FREQ_MUL));
    +
    + /* 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 (curr_frq_in_khz != freq_to_set) {
    + pr_info("(fmdrv): Frequency is set to (%d) but"
    + " requested frequency is (%d)\n", curr_frq_in_khz,
    + freq_to_set);
    + }
    +
    + /* 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? */
    +
    + return ret;
    +}
    +
    +static int fm_rx_set_channel_spacing(struct fmdrv_ops *fmdev,
    + unsigned int spacing)
    +{
    + unsigned short payload;
    + int ret;
    +
    + if (spacing == 0)
    + spacing = FM_CHANNEL_SPACING_50KHZ;
    + else 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.channel_spacing = spacing * FM_FREQ_MUL;
    +
    + return ret;
    +}
    +
    +int fm_rx_seek(struct fmdrv_ops *fmdev, unsigned int seek_upward,
    + unsigned int wrap_around, unsigned int spacing)
    +{
    + int resp_len;
    + unsigned short curr_frq, next_frq, last_frq;
    + unsigned short payload, int_reason, intr_flag;
    + char offset, spacing_index;
    + unsigned long timeleft;
    + int ret;
    +
    + if (fmdev->curr_fmmode != FM_MODE_RX)
    + return -EPERM;
    +
    + /* Set channel spacing */
    + ret = fm_rx_set_channel_spacing(fmdev, spacing);
    + if (ret < 0) {
    + pr_err("(fmdrv): 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(curr_frq);
    + last_frq = (fmdev->rx.region.top_frequency -
    + fmdev->rx.region.bottom_frequency) / FM_FREQ_MUL;
    +
    + /* Check the offset in order to be aligned to the channel spacing*/
    + spacing_index = fmdev->rx.region.channel_spacing / FM_FREQ_MUL;
    + offset = curr_frq % spacing_index;
    +
    + next_frq = seek_upward ? curr_frq + spacing_index /* Seek Up */ :
    + curr_frq - spacing_index /* 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_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\n",
    + jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
    + return -ETIMEDOUT;
    + }
    +
    + 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.curr_freq = seek_upward ?
    + fmdev->rx.region.top_frequency :
    + fmdev->rx.region.bottom_frequency;
    + } else {
    + fmdev->rx.curr_freq = seek_upward ?
    + fmdev->rx.region.bottom_frequency :
    + fmdev->rx.region.top_frequency;
    + /* Calculate frequency index to write */
    + next_frq = (fmdev->rx.curr_freq -
    + fmdev->rx.region.bottom_frequency) /
    + 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(curr_frq);
    + fmdev->rx.curr_freq = (fmdev->rx.region.bottom_frequency +
    + ((unsigned int)curr_frq * FM_FREQ_MUL));
    +
    + }
    + /* Reset RDS cache and current station pointers */
    + fm_rx_reset_rds_cache(fmdev);
    + fm_rx_reset_curr_station_info(fmdev);
    +
    + 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_MIN || vol_to_set > FM_RX_VOLUME_MAX) {
    + pr_err("(fmdrv): 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.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\n");
    + 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_freq_range(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;
    +}
    +
    +/* Returns current band index (0-Europe/US; 1-Japan) */
    +void fm_rx_get_region(struct fmdrv_ops *fmdev, unsigned char *region)
    +{
    + *region = fmdev->rx.region.region_index;
    +}
    +
    +/* 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 = 0;
    + int ret = -EPERM;
    +
    + if (fmdev->curr_fmmode != FM_MODE_RX)
    + return ret;
    +
    + if (region_to_set != FM_BAND_EUROPE_US &&
    + region_to_set != FM_BAND_JAPAN) {
    + pr_err("(fmdrv): Invalid band\n");
    + return -EINVAL;
    + }
    +
    + if (fmdev->rx.region.region_index == region_to_set) {
    + pr_err("(fmdrv): Requested band is already configured\n");
    + return ret;
    + }
    +
    + /* Send cmd to set the band */
    + payload = (unsigned short)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.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_debug("(fmdrv): "
    + "Current freq is not within band limit boundary,"
    + "switching to %d KHz\n", new_frq);
    + /*
    + * Current RX frequency is not within boundary. So,
    + * update it.
    + */
    + ret = fm_rx_set_frequency(fmdev, new_frq);
    + }
    +
    + 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\n");
    + 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;
    +
    + 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 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\n");
    + 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\n");
    + 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\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 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\n");
    + return -EINVAL;
    + }
    + payload = (unsigned short)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.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\n");
    + 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\n");
    + return -EINVAL;
    + }
    +
    + /* Set stereo/mono mode */
    + payload = (unsigned short)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 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\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 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 (%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.curr_deemphasis_mode = mode;
    + return 0;
    +}
    +
    +/* Gets current RX de-emphasis filter mode */
    +int fm_rx_get_deemphasis_mode(struct fmdrv_ops *fmdev,
    + unsigned short *curr_deemphasis_mode)
    +{
    + if (fmdev->curr_fmmode != FM_MODE_RX)
    + return -EPERM;
    +
    + if (curr_deemphasis_mode == NULL) {
    + pr_err("(fmdrv): Invalid memory\n");
    + return -ENOMEM;
    + }
    +
    + *curr_deemphasis_mode = fmdev->rx.curr_deemphasis_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\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_POWET_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 */
    + /* Turn off RDS circuit */
    + payload = FM_RX_POWER_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_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\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 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\n");
    + return -EINVAL;
    + }
    + /* Set RDS operation mode */
    + payload = (unsigned short)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;
    +}
    +
    +/* 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\n");
    + 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\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 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\n");
    + return -ENOMEM;
    + }
    +
    + *af_mode = fmdev->rx.af_mode;
    +
    + return 0;
    +}
    diff --git a/drivers/media/radio/wl128x/fmdrv_rx.h b/drivers/media/radio/wl128x/fmdrv_rx.h
    new file mode 100644
    index 0000000..3e4ba17
    --- /dev/null
    +++ b/drivers/media/radio/wl128x/fmdrv_rx.h
    @@ -0,0 +1,59 @@
    +/*
    + * 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, 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_freq_range(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 *);
    +void fm_rx_get_region(struct fmdrv_ops *, unsigned char *);
    +
    +int fm_rx_set_chanl_spacing(struct fmdrv_ops *, unsigned char);
    +int fm_rx_get_chanl_spacing(struct fmdrv_ops *, unsigned char *);
    +#endif
    +
    --
    1.5.6.3


    \
     
     \ /
      Last update: 2010-12-30 11:51    [W:5.665 / U:0.012 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site