[RFC/PATCH 3/9] drivers:staging:ti-st: Sources for FM TX
From: x0130808
Date: Wed Sep 22 2010 - 06:38:28 EST
From: Raja Mani <raja_mani@xxxxxx>
This has implementation for FM TX functionality.
It communicates with FM V4l2 module and FM common module.
Signed-off-by: Raja Mani <raja_mani@xxxxxx>
Signed-off-by: Pramodh AG <pramodh_ag@xxxxxx>
Signed-off-by: Manjunatha Halli <x0130808@xxxxxx>
---
drivers/staging/ti-st/fmdrv_tx.c | 451 ++++++++++++++++++++++++++++++++++++++
drivers/staging/ti-st/fmdrv_tx.h | 37 +++
2 files changed, 488 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/ti-st/fmdrv_tx.c
create mode 100644 drivers/staging/ti-st/fmdrv_tx.h
diff --git a/drivers/staging/ti-st/fmdrv_tx.c b/drivers/staging/ti-st/fmdrv_tx.c
new file mode 100644
index 0000000..2c9f004
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_tx.c
@@ -0,0 +1,451 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ * This sub-module of FM driver implements FM TX functionality.
+ *
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/delay.h>
+#include "fmdrv.h"
+#include "fmdrv_common.h"
+#include "fmdrv_tx.h"
+
+int fm_tx_set_stereo_mono(struct fmdrv_ops *fmdev, unsigned short mode)
+{
+ unsigned short payload;
+ int ret = 0;
+
+ if (fmdev->curr_fmmode != FM_MODE_TX)
+ return -EPERM;
+
+ if (fmdev->tx_data.aud_mode == mode)
+ return ret;
+
+ pr_debug("stereo mode: %d\n", mode);
+
+ /* Set Stereo/Mono mode */
+ FM_STORE_LE16_TO_BE16(payload, (1 - mode));
+ ret = fmc_send_cmd(fmdev, MONO_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX stereo/mono mode - %d\n",
+ ret);
+ return ret;
+ }
+
+ fmdev->tx_data.aud_mode = mode;
+ return ret;
+}
+
+static int __set_rds_text(struct fmdrv_ops *fmdev, unsigned char *rds_text)
+{
+ unsigned short payload;
+ int ret;
+
+ ret = fmc_send_cmd(fmdev, RDS_DATA_SET, rds_text, strlen(rds_text),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX RDS data - %d\n", ret);
+ return ret;
+ }
+
+ /* Scroll mode */
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)0x1);
+ ret = fmc_send_cmd(fmdev, DISPLAY_MODE_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RDS display mode - %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __set_rds_data_mode(struct fmdrv_ops *fmdev, unsigned char mode)
+{
+ unsigned short payload;
+ int ret;
+
+ /* Setting unique PI TODO: how unique? */
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)0xcafe);
+ ret = fmc_send_cmd(fmdev, PI_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set PI - %d\n", ret);
+ return ret;
+ }
+
+ /* Set decoder id */
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)0xa);
+ ret = fmc_send_cmd(fmdev, DI_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set DI - %d\n", ret);
+ return ret;
+ }
+
+ /* TODO: RDS_MODE_GET? */
+ return 0;
+}
+
+static int __set_rds_len(struct fmdrv_ops *fmdev, unsigned char type,
+ unsigned short len)
+{
+ unsigned short payload;
+ int ret;
+
+ len |= type << 8;
+ FM_STORE_LE16_TO_BE16(payload, len);
+ ret = fmc_send_cmd(fmdev, LENGTH_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RDS data length - %d\n", ret);
+ return ret;
+ }
+
+ /* TODO: LENGTH_GET? */
+ return 0;
+}
+
+int fm_tx_set_rds_mode(struct fmdrv_ops *fmdev, unsigned char rds_en_dis)
+{
+ unsigned short payload;
+ int ret;
+ unsigned char rds_text[] = "Zoom2\n";
+
+ if (fmdev->curr_fmmode != FM_MODE_TX)
+ return -EPERM;
+
+ pr_debug("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)
+ FM_STORE_LE16_TO_BE16(payload, 0x01);
+ else
+ FM_STORE_LE16_TO_BE16(payload, 0x00);
+
+ ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX RDS state - %d\n", ret);
+ 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;
+}
+
+int fm_tx_set_radio_text(struct fmdrv_ops *fmdev,
+ unsigned char *rds_text,
+ unsigned char rds_type)
+{
+ unsigned short payload;
+ int 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);
+
+ FM_STORE_LE16_TO_BE16(payload, 1);
+ ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to enable TX RDS data - %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+int fm_tx_set_af(struct fmdrv_ops *fmdev, unsigned int af)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_TX)
+ return -EPERM;
+ pr_debug("AF: %d\n", af);
+
+ af = (af - 87500) / 100;
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)af);
+ ret = fmc_send_cmd(fmdev, TA_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX AF - %d\n", ret);
+ return ret;
+ }
+ return 0;
+}
+
+int fm_tx_set_region(struct fmdrv_ops *fmdev,
+ unsigned char region_to_set)
+{
+ unsigned short payload;
+ int ret;
+
+ if (region_to_set != FM_BAND_EUROPE_US &&
+ region_to_set != FM_BAND_JAPAN) {
+ pr_err("Invalid band\n");
+ return -EINVAL;
+ }
+
+ /* Send command to set the band */
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)region_to_set);
+ ret = fmc_send_cmd(fmdev, TX_BAND_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX band - %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+int fm_tx_set_mute_mode(struct fmdrv_ops *fmdev,
+ unsigned char mute_mode_toset)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_TX)
+ return -EPERM;
+ pr_debug("tx: mute mode %d\n", mute_mode_toset);
+
+ FM_STORE_LE16_TO_BE16(payload, mute_mode_toset);
+ ret = fmc_send_cmd(fmdev, MUTE, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to TX mute mode - %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+/* Set TX Audio I/O */
+static int __set_audio_io(struct fmdrv_ops *fmdev)
+{
+ struct fmtx_data *tx = &fmdev->tx_data;
+ unsigned short payload;
+ int ret;
+
+ /* Set Audio I/O Enable */
+ FM_STORE_LE16_TO_BE16(payload, tx->audio_io);
+ ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to enable TX audio I/O - %d\n", ret);
+ return ret;
+ }
+
+ /* TODO: is audio set? */
+ return 0;
+}
+
+/* Start TX Transmission */
+static int __enable_xmit(struct fmdrv_ops *fmdev, unsigned char new_xmit_state)
+{
+ struct fmtx_data *tx = &fmdev->tx_data;
+ unsigned short payload;
+ unsigned long timeleft;
+ int ret;
+
+ /* Enable POWER_ENB interrupts */
+ FM_STORE_LE16_TO_BE16(payload, FM_POW_ENB_EVENT);
+ 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;
+ }
+
+ /* Set Power Enable */
+ FM_STORE_LE16_TO_BE16(payload, new_xmit_state);
+ ret = fmc_send_cmd(fmdev, POWER_ENB_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to enable transmission - %d\n", ret);
+ return ret;
+ }
+
+ /* Wait for Power Enabled */
+ init_completion(&fmdev->maintask_completion);
+ timeleft = wait_for_completion_timeout(&fmdev->maintask_completion,
+ FM_DRV_TX_TIMEOUT);
+ if (!timeleft) {
+ pr_err("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 */
+int fm_tx_set_pwr_lvl(struct fmdrv_ops *fmdev, unsigned char new_pwr_lvl)
+{
+ unsigned short payload;
+ struct fmtx_data *tx = &fmdev->tx_data;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_TX)
+ return -EPERM;
+ pr_debug("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 */
+ FM_STORE_LE16_TO_BE16(payload, new_pwr_lvl);
+ ret = fmc_send_cmd(fmdev, POWER_LEL_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX power level - %d\n", ret);
+ 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.
+ */
+int fm_tx_set_preemph_filter(struct fmdrv_ops *fmdev, unsigned int filter)
+{
+ struct fmtx_data *tx = &fmdev->tx_data;
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_TX)
+ return -EPERM;
+
+ FM_STORE_LE16_TO_BE16(payload, filter);
+ ret = fmc_send_cmd(fmdev, PREMPH_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX preemphasis filter value -"
+ " %d\n", ret);
+ return ret;
+ }
+
+ tx->preemph = filter;
+ return ret;
+}
+
+/* Sets FM TX antenna impedance value */
+int fm_tx_set_ant_imp(struct fmdrv_ops *fmdev, unsigned char imp)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_TX)
+ return -EPERM;
+
+ FM_STORE_LE16_TO_BE16(payload, imp);
+ ret = fmc_send_cmd(fmdev, IMP_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set TX antenna impedance value -"
+ " %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+/* Set TX Frequency */
+int fm_tx_set_frequency(struct fmdrv_ops *fmdev, unsigned int freq_to_set)
+{
+ struct fmtx_data *tx = &fmdev->tx_data;
+ unsigned short payload, chanl_index;
+ int 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 */
+ FM_STORE_LE16_TO_BE16(payload, (FM_FR_EVENT | FM_BL_EVENT));
+ 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;
+ }
+
+ tx->tx_frq = (unsigned long)freq_to_set;
+ pr_debug("tx: freq_to_set %ld\n", (long int)tx->tx_frq);
+
+ chanl_index = freq_to_set / 10;
+ /* Set current tuner channel */
+ FM_STORE_LE16_TO_BE16(payload, chanl_index);
+ ret = fmc_send_cmd(fmdev, CHANL_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set tunner channel %d\n", ret);
+ 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/staging/ti-st/fmdrv_tx.h b/drivers/staging/ti-st/fmdrv_tx.h
new file mode 100644
index 0000000..f61dace
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_tx.h
@@ -0,0 +1,37 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ * FM TX 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_TX_H
+#define _FMDRV_TX_H
+
+int fm_tx_set_frequency(struct fmdrv_ops*, unsigned int);
+int fm_tx_set_pwr_lvl(struct fmdrv_ops*, unsigned char);
+int fm_tx_set_region(struct fmdrv_ops*, unsigned char);
+int fm_tx_set_mute_mode(struct fmdrv_ops*, unsigned char);
+int fm_tx_set_stereo_mono(struct fmdrv_ops*, unsigned short);
+int fm_tx_set_rds_mode(struct fmdrv_ops*, unsigned char);
+int fm_tx_set_radio_text(struct fmdrv_ops*, unsigned char*, unsigned char);
+int fm_tx_set_af(struct fmdrv_ops*, unsigned int);
+int fm_tx_set_preemph_filter(struct fmdrv_ops*, unsigned int);
+int fm_tx_set_ant_imp(struct fmdrv_ops*, unsigned char);
+
+#endif
+
--
1.5.6.3
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/