830 lines
19 KiB
C
830 lines
19 KiB
C
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/*
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* FM Driver for Connectivity chip of Texas Instruments.
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* This sub-module of FM driver implements FM RX functionality.
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*
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* Copyright (C) 2011 Texas Instruments
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* Author: Raja Mani <raja_mani@ti.com>
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* Author: Manjunatha Halli <manjunatha_halli@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include "fmdrv.h"
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#include "fmdrv_common.h"
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#include "fmdrv_rx.h"
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void fm_rx_reset_rds_cache(struct fmdev *fmdev)
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{
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fmdev->rx.rds.flag = FM_RDS_DISABLE;
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fmdev->rx.rds.last_blk_idx = 0;
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fmdev->rx.rds.wr_idx = 0;
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fmdev->rx.rds.rd_idx = 0;
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if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
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fmdev->irq_info.mask |= FM_LEV_EVENT;
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}
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void fm_rx_reset_station_info(struct fmdev *fmdev)
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{
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fmdev->rx.stat_info.picode = FM_NO_PI_CODE;
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fmdev->rx.stat_info.afcache_size = 0;
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fmdev->rx.stat_info.af_list_max = 0;
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}
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int fm_rx_set_freq(struct fmdev *fmdev, u32 freq)
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{
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unsigned long timeleft;
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u16 payload, curr_frq, intr_flag;
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u32 curr_frq_in_khz;
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u32 resp_len;
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int ret;
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if (freq < fmdev->rx.region.bot_freq || freq > fmdev->rx.region.top_freq) {
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fmerr("Invalid frequency %d\n", freq);
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return -EINVAL;
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}
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/* Set audio enable */
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payload = FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG;
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ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Set hilo to automatic selection */
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payload = FM_RX_IFFREQ_HILO_AUTOMATIC;
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ret = fmc_send_cmd(fmdev, HILO_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Calculate frequency index and set*/
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payload = (freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
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ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Read flags - just to clear any pending interrupts if we had */
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ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
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if (ret < 0)
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return ret;
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/* Enable FR, BL interrupts */
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intr_flag = fmdev->irq_info.mask;
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fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
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payload = fmdev->irq_info.mask;
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ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Start tune */
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payload = FM_TUNER_PRESET_MODE;
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ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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goto exit;
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/* Wait for tune ended interrupt */
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init_completion(&fmdev->maintask_comp);
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timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
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FM_DRV_TX_TIMEOUT);
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if (!timeleft) {
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fmerr("Timeout(%d sec),didn't get tune ended int\n",
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jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
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ret = -ETIMEDOUT;
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goto exit;
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}
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/* Read freq back to confirm */
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ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, &curr_frq, &resp_len);
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if (ret < 0)
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goto exit;
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curr_frq = be16_to_cpu((__force __be16)curr_frq);
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curr_frq_in_khz = (fmdev->rx.region.bot_freq + ((u32)curr_frq * FM_FREQ_MUL));
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if (curr_frq_in_khz != freq) {
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pr_info("Frequency is set to (%d) but requested freq is (%d)\n",
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curr_frq_in_khz, freq);
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}
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/* Update local cache */
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fmdev->rx.freq = curr_frq_in_khz;
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exit:
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/* Re-enable default FM interrupts */
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fmdev->irq_info.mask = intr_flag;
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payload = fmdev->irq_info.mask;
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ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Reset RDS cache and current station pointers */
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fm_rx_reset_rds_cache(fmdev);
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fm_rx_reset_station_info(fmdev);
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return ret;
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}
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static int fm_rx_set_channel_spacing(struct fmdev *fmdev, u32 spacing)
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{
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u16 payload;
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int ret;
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if (spacing > 0 && spacing <= 50000)
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spacing = FM_CHANNEL_SPACING_50KHZ;
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else if (spacing > 50000 && spacing <= 100000)
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spacing = FM_CHANNEL_SPACING_100KHZ;
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else
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spacing = FM_CHANNEL_SPACING_200KHZ;
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/* set channel spacing */
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payload = spacing;
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ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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fmdev->rx.region.chanl_space = spacing * FM_FREQ_MUL;
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return ret;
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}
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int fm_rx_seek(struct fmdev *fmdev, u32 seek_upward,
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u32 wrap_around, u32 spacing)
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{
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u32 resp_len;
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u16 curr_frq, next_frq, last_frq;
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u16 payload, int_reason, intr_flag;
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u16 offset, space_idx;
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unsigned long timeleft;
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int ret;
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/* Set channel spacing */
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ret = fm_rx_set_channel_spacing(fmdev, spacing);
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if (ret < 0) {
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fmerr("Failed to set channel spacing\n");
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return ret;
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}
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/* Read the current frequency from chip */
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ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL,
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sizeof(curr_frq), &curr_frq, &resp_len);
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if (ret < 0)
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return ret;
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curr_frq = be16_to_cpu((__force __be16)curr_frq);
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last_frq = (fmdev->rx.region.top_freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
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/* Check the offset in order to be aligned to the channel spacing*/
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space_idx = fmdev->rx.region.chanl_space / FM_FREQ_MUL;
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offset = curr_frq % space_idx;
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next_frq = seek_upward ? curr_frq + space_idx /* Seek Up */ :
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curr_frq - space_idx /* Seek Down */ ;
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/*
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* Add or subtract offset in order to stay aligned to the channel
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* spacing.
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*/
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if ((short)next_frq < 0)
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next_frq = last_frq - offset;
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else if (next_frq > last_frq)
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next_frq = 0 + offset;
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again:
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/* Set calculated next frequency to perform seek */
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payload = next_frq;
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ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Set search direction (0:Seek Down, 1:Seek Up) */
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payload = (seek_upward ? FM_SEARCH_DIRECTION_UP : FM_SEARCH_DIRECTION_DOWN);
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ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Read flags - just to clear any pending interrupts if we had */
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ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
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if (ret < 0)
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return ret;
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/* Enable FR, BL interrupts */
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intr_flag = fmdev->irq_info.mask;
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fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
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payload = fmdev->irq_info.mask;
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ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Start seek */
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payload = FM_TUNER_AUTONOMOUS_SEARCH_MODE;
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ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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/* Wait for tune ended/band limit reached interrupt */
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init_completion(&fmdev->maintask_comp);
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timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
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FM_DRV_RX_SEEK_TIMEOUT);
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if (!timeleft) {
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fmerr("Timeout(%d sec),didn't get tune ended int\n",
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jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
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return -ENODATA;
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}
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int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT);
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/* Re-enable default FM interrupts */
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fmdev->irq_info.mask = intr_flag;
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payload = fmdev->irq_info.mask;
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ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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if (int_reason & FM_BL_EVENT) {
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if (wrap_around == 0) {
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fmdev->rx.freq = seek_upward ?
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fmdev->rx.region.top_freq :
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fmdev->rx.region.bot_freq;
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} else {
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fmdev->rx.freq = seek_upward ?
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fmdev->rx.region.bot_freq :
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fmdev->rx.region.top_freq;
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/* Calculate frequency index to write */
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next_frq = (fmdev->rx.freq -
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fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
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goto again;
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}
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} else {
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/* Read freq to know where operation tune operation stopped */
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ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2,
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&curr_frq, &resp_len);
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if (ret < 0)
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return ret;
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curr_frq = be16_to_cpu((__force __be16)curr_frq);
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fmdev->rx.freq = (fmdev->rx.region.bot_freq +
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((u32)curr_frq * FM_FREQ_MUL));
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}
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/* Reset RDS cache and current station pointers */
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fm_rx_reset_rds_cache(fmdev);
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fm_rx_reset_station_info(fmdev);
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return ret;
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}
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int fm_rx_set_volume(struct fmdev *fmdev, u16 vol_to_set)
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{
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u16 payload;
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int ret;
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if (fmdev->curr_fmmode != FM_MODE_RX)
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return -EPERM;
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if (vol_to_set > FM_RX_VOLUME_MAX) {
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fmerr("Volume is not within(%d-%d) range\n",
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FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX);
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return -EINVAL;
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}
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vol_to_set *= FM_RX_VOLUME_GAIN_STEP;
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payload = vol_to_set;
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ret = fmc_send_cmd(fmdev, VOLUME_SET, REG_WR, &payload,
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sizeof(payload), NULL, NULL);
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if (ret < 0)
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return ret;
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fmdev->rx.volume = vol_to_set;
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return ret;
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}
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/* Get volume */
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int fm_rx_get_volume(struct fmdev *fmdev, u16 *curr_vol)
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{
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if (fmdev->curr_fmmode != FM_MODE_RX)
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return -EPERM;
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if (curr_vol == NULL) {
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fmerr("Invalid memory\n");
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return -ENOMEM;
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}
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*curr_vol = fmdev->rx.volume / FM_RX_VOLUME_GAIN_STEP;
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return 0;
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}
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/* To get current band's bottom and top frequency */
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int fm_rx_get_band_freq_range(struct fmdev *fmdev, u32 *bot_freq, u32 *top_freq)
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{
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if (bot_freq != NULL)
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*bot_freq = fmdev->rx.region.bot_freq;
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if (top_freq != NULL)
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*top_freq = fmdev->rx.region.top_freq;
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return 0;
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}
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/* Returns current band index (0-Europe/US; 1-Japan) */
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void fm_rx_get_region(struct fmdev *fmdev, u8 *region)
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{
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*region = fmdev->rx.region.fm_band;
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}
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/* Sets band (0-Europe/US; 1-Japan) */
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int fm_rx_set_region(struct fmdev *fmdev, u8 region_to_set)
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{
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|
|
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;
|
||
|
|
}
|