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Subject[PATCH v4 4/6] drivers:staging: ti-st: fmdrv_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/staging/ti-st/fmdrv_rx.c | 979 ++++++++++++++++++++++++++++++++++++++
drivers/staging/ti-st/fmdrv_rx.h | 59 +++
2 files changed, 1038 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..5f802da
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_rx.c
@@ -0,0 +1,979 @@
+/*
+ * 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;
+ 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 */
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX audio enable path - %d\n",
+ ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set HILO to automatic selection "
+ "- %d\n", ret);
+ return ret;
+ }
+
+ /* Calculate frequency index to write */
+ frq_index = (freq_to_set - fmdev->rx.region.bottom_frequency) /
+ FM_FREQ_MUL;
+
+ /* 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set frequency index - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to read interrupt flag - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set interrupt mask - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to start tune operation - %d\n", ret);
+ 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_GET, NULL, 2,
+ &fmdev->maintask_completion, &curr_frq, &resp_len);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to read current frequency - %d\n",
+ ret);
+ return ret;
+ }
+
+ curr_frq = FM_BE16_TO_LE16(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 &= ~(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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set interrupt mask - %d\n", ret);
+ 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;
+}
+
+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, spacing;
+ unsigned long timeleft;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ /* Read the current frequency from chip */
+ ret = fmc_send_cmd(fmdev, FREQ_GET, NULL, sizeof(curr_frq),
+ &fmdev->maintask_completion, &curr_frq, &resp_len);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to read current frequency - %d\n",
+ ret);
+ return ret;
+ }
+
+ curr_frq = FM_BE16_TO_LE16(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 = fmdev->rx.region.channel_spacing / FM_FREQ_MUL;
+ offset = curr_frq % spacing;
+
+ next_frq = seek_upward ? curr_frq + spacing /* Seek Up */ :
+ curr_frq - spacing /* 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 */
+ FM_STORE_LE16_TO_BE16(payload, next_frq);
+ ret = fmc_send_cmd(fmdev, FREQ_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set new frequency - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set seek direction - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to read interrupt flag - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set interrupt mask - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to start seek operation - %d\n", ret);
+ 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 &= ~(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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set interrupt mask - %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to read current frequency - %d\n",
+ ret);
+ return ret;
+ }
+
+ curr_frq = FM_BE16_TO_LE16(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 error if band limit is reached */
+ if (int_reason & FM_BL_EVENT) {
+ if (!wrap_around) {
+ ret = fmdev->rx.region.top_frequency;
+ } else {
+ next_frq = 1;
+ goto again;
+ }
+ }
+
+ 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;
+
+ FM_STORE_LE16_TO_BE16(payload, vol_to_set);
+ ret = fmc_send_cmd(fmdev, VOLUME_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX volume level - %d\n", ret);
+ 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 */
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set FM RX band - %d\n", ret);
+ 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;
+
+ FM_STORE_LE16_TO_BE16(payload, muteval);
+ ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX mute state - %d\n", ret);
+ 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, NULL, 2,
+ &fmdev->maintask_completion, &curr_rssi_lel, &resp_len);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to get RSSI level - %d\n", ret);
+ return 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\n");
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RSSI level - %d\n", ret);
+ 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 */
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX stereo/mono mode - %d\n",
+ ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX stereo blend - %d\n", ret);
+ 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_GET, NULL, 2,
+ &fmdev->maintask_completion, &curr_mode, &resp_len);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to get stereo/mono mode - %d\n", ret);
+ return 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 (%d)\n", 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX deemphasis filter value - "
+ "%d\n", ret);
+ 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 */
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to enable RX RDS - %d\n", ret);
+ return ret;
+ }
+
+ /* Clear and reset 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to flush RX RDS fifo - %d\n",
+ ret);
+ return ret;
+ }
+
+ /* Read flags - just to clear any pending interrupts. */
+ ret = fmc_send_cmd(fmdev, FLAG_GET, NULL, 2,
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to read interrupt flag - %d\n",
+ ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX RDS fifo threshold -"
+ " %d\n", ret);
+ return 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set interrupt mask- %d\n",
+ ret);
+ 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 */
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to disable RX RDS - %d\n",
+ ret);
+ 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 */
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX RDS system - %d\n", ret);
+ 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;
+
+ 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);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set interrupt mask - %d\n", ret);
+ 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;
+}
+
+/* Set desired channel spacing */
+int fm_rx_set_chanl_spacing(struct fmdrv_ops *fmdev, unsigned char spacing)
+{
+ unsigned short payload;
+ int ret;
+
+ if (spacing != FM_CHANNEL_SPACING_50KHZ &&
+ spacing != FM_CHANNEL_SPACING_100KHZ &&
+ spacing != FM_CHANNEL_SPACING_200KHZ) {
+ pr_err("Invalid channel spacing");
+ return -EINVAL;
+ }
+
+ /* set channel spacing */
+ FM_STORE_LE16_TO_BE16(payload, spacing);
+
+ ret = fmc_send_cmd(fmdev, CHANL_BW_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0)
+ return ret;
+
+ fmdev->rx.region.channel_spacing = spacing * FM_FREQ_MUL;
+
+ return 0;
+}
+
+/* Get channel spacing */
+int fm_rx_get_chanl_spacing(struct fmdrv_ops *fmdev, unsigned char *spacing)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (spacing == NULL) {
+ pr_err("Invalid memory");
+ return -ENOMEM;
+ }
+
+ *spacing = fmdev->rx.region.channel_spacing / FM_FREQ_MUL;
+
+ 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..3d1490a
--- /dev/null
+++ b/drivers/staging/ti-st/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);
+
+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


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