From 8b7a186c9b9322a4519af710736210bf8d5aa7a7 Mon Sep 17 00:00:00 2001 From: Manjunatha Halli Date: Tue, 11 Jan 2011 06:37:53 -0300 Subject: [PATCH] [media] drivers:media:radio: wl128x: FM driver TX sources This has implementation for FM TX functionality. It communicates with FM V4l2 module and FM common module. Signed-off-by: Manjunatha Halli Reviewed-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/wl128x/fmdrv_tx.c | 425 ++++++++++++++++++++++++++ drivers/media/radio/wl128x/fmdrv_tx.h | 37 +++ 2 files changed, 462 insertions(+) create mode 100644 drivers/media/radio/wl128x/fmdrv_tx.c create mode 100644 drivers/media/radio/wl128x/fmdrv_tx.h diff --git a/drivers/media/radio/wl128x/fmdrv_tx.c b/drivers/media/radio/wl128x/fmdrv_tx.c new file mode 100644 index 000000000000..be54068b56a8 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_tx.c @@ -0,0 +1,425 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * This sub-module of FM driver implements FM TX functionality. + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include "fmdrv.h" +#include "fmdrv_common.h" +#include "fmdrv_tx.h" + +u32 fm_tx_set_stereo_mono(struct fmdev *fmdev, u16 mode) +{ + u16 payload; + u32 ret; + + if (fmdev->tx_data.aud_mode == mode) + return 0; + + fmdbg("stereo mode: %d\n", mode); + + /* Set Stereo/Mono mode */ + payload = (1 - mode); + ret = fmc_send_cmd(fmdev, MONO_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fmdev->tx_data.aud_mode = mode; + + return ret; +} + +static u32 set_rds_text(struct fmdev *fmdev, u8 *rds_text) +{ + u16 payload; + u32 ret; + + ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text, + strlen(rds_text), NULL, NULL); + if (ret < 0) + return ret; + + /* Scroll mode */ + payload = (u16)0x1; + ret = fmc_send_cmd(fmdev, DISPLAY_MODE, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +static u32 set_rds_data_mode(struct fmdev *fmdev, u8 mode) +{ + u16 payload; + u32 ret; + + /* Setting unique PI TODO: how unique? */ + payload = (u16)0xcafe; + ret = fmc_send_cmd(fmdev, PI_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Set decoder id */ + payload = (u16)0xa; + ret = fmc_send_cmd(fmdev, DI_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: RDS_MODE_GET? */ + return 0; +} + +static u32 set_rds_len(struct fmdev *fmdev, u8 type, u16 len) +{ + u16 payload; + u32 ret; + + len |= type << 8; + payload = len; + ret = fmc_send_cmd(fmdev, RDS_CONFIG_DATA_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: LENGTH_GET? */ + return 0; +} + +u32 fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis) +{ + u16 payload; + u32 ret; + u8 rds_text[] = "Zoom2\n"; + + fmdbg("rds_en_dis:%d(E:%d, D:%d)\n", rds_en_dis, + FM_RDS_ENABLE, FM_RDS_DISABLE); + + if (rds_en_dis == FM_RDS_ENABLE) { + /* Set RDS length */ + set_rds_len(fmdev, 0, strlen(rds_text)); + + /* Set RDS text */ + set_rds_text(fmdev, rds_text); + + /* Set RDS mode */ + set_rds_data_mode(fmdev, 0x0); + } + + /* Send command to enable RDS */ + if (rds_en_dis == FM_RDS_ENABLE) + payload = 0x01; + else + payload = 0x00; + + ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + if (rds_en_dis == FM_RDS_ENABLE) { + /* Set RDS length */ + set_rds_len(fmdev, 0, strlen(rds_text)); + + /* Set RDS text */ + set_rds_text(fmdev, rds_text); + } + fmdev->tx_data.rds.flag = rds_en_dis; + + return 0; +} + +u32 fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type) +{ + u16 payload; + u32 ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + fm_tx_set_rds_mode(fmdev, 0); + + /* Set RDS length */ + set_rds_len(fmdev, rds_type, strlen(rds_text)); + + /* Set RDS text */ + set_rds_text(fmdev, rds_text); + + /* Set RDS mode */ + set_rds_data_mode(fmdev, 0x0); + + payload = 1; + ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +u32 fm_tx_set_af(struct fmdev *fmdev, u32 af) +{ + u16 payload; + u32 ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + fmdbg("AF: %d\n", af); + + af = (af - 87500) / 100; + payload = (u16)af; + ret = fmc_send_cmd(fmdev, TA_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +u32 fm_tx_set_region(struct fmdev *fmdev, u8 region) +{ + u16 payload; + u32 ret; + + if (region != FM_BAND_EUROPE_US && region != FM_BAND_JAPAN) { + fmerr("Invalid band\n"); + return -EINVAL; + } + + /* Send command to set the band */ + payload = (u16)region; + ret = fmc_send_cmd(fmdev, TX_BAND_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +u32 fm_tx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset) +{ + u16 payload; + u32 ret; + + fmdbg("tx: mute mode %d\n", mute_mode_toset); + + payload = mute_mode_toset; + ret = fmc_send_cmd(fmdev, MUTE, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + return 0; +} + +/* Set TX Audio I/O */ +static u32 set_audio_io(struct fmdev *fmdev) +{ + struct fmtx_data *tx = &fmdev->tx_data; + u16 payload; + u32 ret; + + /* Set Audio I/O Enable */ + payload = tx->audio_io; + ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: is audio set? */ + return 0; +} + +/* Start TX Transmission */ +static u32 enable_xmit(struct fmdev *fmdev, u8 new_xmit_state) +{ + struct fmtx_data *tx = &fmdev->tx_data; + unsigned long timeleft; + u16 payload; + u32 ret; + + /* Enable POWER_ENB interrupts */ + payload = FM_POW_ENB_EVENT; + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Set Power Enable */ + payload = new_xmit_state; + ret = fmc_send_cmd(fmdev, POWER_ENB_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* Wait for Power Enabled */ + init_completion(&fmdev->maintask_comp); + timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, + FM_DRV_TX_TIMEOUT); + if (!timeleft) { + fmerr("Timeout(%d sec),didn't get tune ended interrupt\n", + jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); + return -ETIMEDOUT; + } + + set_bit(FM_CORE_TX_XMITING, &fmdev->flag); + tx->xmit_state = new_xmit_state; + + return 0; +} + +/* Set TX power level */ +u32 fm_tx_set_pwr_lvl(struct fmdev *fmdev, u8 new_pwr_lvl) +{ + u16 payload; + struct fmtx_data *tx = &fmdev->tx_data; + u32 ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + fmdbg("tx: pwr_level_to_set %ld\n", (long int)new_pwr_lvl); + + /* If the core isn't ready update global variable */ + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + tx->pwr_lvl = new_pwr_lvl; + return 0; + } + + /* Set power level: Application will specify power level value in + * units of dB/uV, whereas range and step are specific to FM chip. + * For TI's WL chips, convert application specified power level value + * to chip specific value by subtracting 122 from it. Refer to TI FM + * data sheet for details. + * */ + + payload = (FM_PWR_LVL_HIGH - new_pwr_lvl); + ret = fmc_send_cmd(fmdev, POWER_LEV_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + /* TODO: is the power level set? */ + tx->pwr_lvl = new_pwr_lvl; + + return 0; +} + +/* + * Sets FM TX pre-emphasis filter value (OFF, 50us, or 75us) + * Convert V4L2 specified filter values to chip specific filter values. + */ +u32 fm_tx_set_preemph_filter(struct fmdev *fmdev, u32 preemphasis) +{ + struct fmtx_data *tx = &fmdev->tx_data; + u16 payload; + u32 ret; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + switch (preemphasis) { + case V4L2_PREEMPHASIS_DISABLED: + payload = FM_TX_PREEMPH_OFF; + break; + case V4L2_PREEMPHASIS_50_uS: + payload = FM_TX_PREEMPH_50US; + break; + case V4L2_PREEMPHASIS_75_uS: + payload = FM_TX_PREEMPH_75US; + break; + } + + ret = fmc_send_cmd(fmdev, PREMPH_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + tx->preemph = payload; + + return ret; +} + +/* Get the TX tuning capacitor value.*/ +u32 fm_tx_get_tune_cap_val(struct fmdev *fmdev) +{ + u16 curr_val; + u32 ret, resp_len; + + if (fmdev->curr_fmmode != FM_MODE_TX) + return -EPERM; + + ret = fmc_send_cmd(fmdev, READ_FMANT_TUNE_VALUE, REG_RD, + NULL, sizeof(curr_val), &curr_val, &resp_len); + if (ret < 0) + return ret; + + curr_val = be16_to_cpu(curr_val); + + return curr_val; +} + +/* Set TX Frequency */ +u32 fm_tx_set_freq(struct fmdev *fmdev, u32 freq_to_set) +{ + struct fmtx_data *tx = &fmdev->tx_data; + u16 payload, chanl_index; + u32 ret; + + if (test_bit(FM_CORE_TX_XMITING, &fmdev->flag)) { + enable_xmit(fmdev, 0); + clear_bit(FM_CORE_TX_XMITING, &fmdev->flag); + } + + /* Enable FR, BL interrupts */ + payload = (FM_FR_EVENT | FM_BL_EVENT); + ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + tx->tx_frq = (unsigned long)freq_to_set; + fmdbg("tx: freq_to_set %ld\n", (long int)tx->tx_frq); + + chanl_index = freq_to_set / 10; + + /* Set current tuner channel */ + payload = chanl_index; + ret = fmc_send_cmd(fmdev, CHANL_SET, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + fm_tx_set_pwr_lvl(fmdev, tx->pwr_lvl); + fm_tx_set_preemph_filter(fmdev, tx->preemph); + + tx->audio_io = 0x01; /* I2S */ + set_audio_io(fmdev); + + enable_xmit(fmdev, 0x01); /* Enable transmission */ + + tx->aud_mode = FM_STEREO_MODE; + tx->rds.flag = FM_RDS_DISABLE; + + return 0; +} + diff --git a/drivers/media/radio/wl128x/fmdrv_tx.h b/drivers/media/radio/wl128x/fmdrv_tx.h new file mode 100644 index 000000000000..e393a2bdd49e --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_tx.h @@ -0,0 +1,37 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * FM TX module header. + * + * Copyright (C) 2011 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_TX_H +#define _FMDRV_TX_H + +u32 fm_tx_set_freq(struct fmdev *, u32); +u32 fm_tx_set_pwr_lvl(struct fmdev *, u8); +u32 fm_tx_set_region(struct fmdev *, u8); +u32 fm_tx_set_mute_mode(struct fmdev *, u8); +u32 fm_tx_set_stereo_mono(struct fmdev *, u16); +u32 fm_tx_set_rds_mode(struct fmdev *, u8); +u32 fm_tx_set_radio_text(struct fmdev *, u8 *, u8); +u32 fm_tx_set_af(struct fmdev *, u32); +u32 fm_tx_set_preemph_filter(struct fmdev *, u32); +u32 fm_tx_get_tune_cap_val(struct fmdev *); + +#endif +