[PATCH V7 1/5] WL128x: Add support for FM TX RDS

From: manjunatha_halli
Date: Mon May 21 2012 - 13:12:10 EST

From: Manjunatha Halli <x0130808@xxxxxx>

This patch adds support for following FM TX RDS features,
1. Radio Text
2. PS Name
3. PI Code
4. PTY Code.

Along with above this patch fixes few other minor issues(like
fm tx get frequency, unnecessary error messages etc).

Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Signed-off-by: Manjunatha Halli <x0130808@xxxxxx>
---
drivers/media/radio/wl128x/fmdrv_common.c | 17 +++++++---
drivers/media/radio/wl128x/fmdrv_common.h | 17 +++++++----
drivers/media/radio/wl128x/fmdrv_rx.c | 2 +-
drivers/media/radio/wl128x/fmdrv_tx.c | 41 ++++++++++---------------
drivers/media/radio/wl128x/fmdrv_tx.h | 3 +-
drivers/media/radio/wl128x/fmdrv_v4l2.c | 47 +++++++++++++++++++++++++++++
6 files changed, 90 insertions(+), 37 deletions(-)

diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c
index bf867a6..fcce61a 100644
--- a/drivers/media/radio/wl128x/fmdrv_common.c
+++ b/drivers/media/radio/wl128x/fmdrv_common.c
@@ -354,7 +354,7 @@ static void send_tasklet(unsigned long arg)

/* Check, is there any timeout happened to last transmitted packet */
if ((jiffies - fmdev->last_tx_jiffies) > FM_DRV_TX_TIMEOUT) {
- fmerr("TX timeout occurred\n");
+ fmdbg("TX timeout occurred\n");
atomic_set(&fmdev->tx_cnt, 1);
}

@@ -615,7 +615,11 @@ static void fm_irq_handle_rds_start(struct fmdev *fmdev)
{
if (fmdev->irq_info.flag & FM_RDS_EVENT & fmdev->irq_info.mask) {
fmdbg("irq: rds threshold reached\n");
- fmdev->irq_info.stage = FM_RDS_SEND_RDS_GETCMD_IDX;
+ /* If RSSI reached below threshold then dont get RDS data */
+ if (fmdev->irq_info.flag & FM_LEV_EVENT)
+ fmdev->irq_info.stage = FM_HW_TUNE_OP_ENDED_IDX;
+ else
+ fmdev->irq_info.stage = FM_RDS_SEND_RDS_GETCMD_IDX;
} else {
/* Continue next function in interrupt handler table */
fmdev->irq_info.stage = FM_HW_TUNE_OP_ENDED_IDX;
@@ -1129,8 +1133,9 @@ int fmc_set_freq(struct fmdev *fmdev, u32 freq_to_set)

int fmc_get_freq(struct fmdev *fmdev, u32 *cur_tuned_frq)
{
- if (fmdev->rx.freq == FM_UNDEFINED_FREQ) {
- fmerr("RX frequency is not set\n");
+ if (fmdev->rx.freq == FM_UNDEFINED_FREQ &&
+ fmdev->tx_data.tx_frq == FM_UNDEFINED_FREQ) {
+ fmerr("RX/TX frequency is not set\n");
return -EPERM;
}
if (cur_tuned_frq == NULL) {
@@ -1144,7 +1149,7 @@ int fmc_get_freq(struct fmdev *fmdev, u32 *cur_tuned_frq)
return 0;

case FM_MODE_TX:
- *cur_tuned_frq = 0; /* TODO : Change this later */
+ *cur_tuned_frq = fmdev->tx_data.tx_frq;
return 0;

default:
@@ -1574,6 +1579,8 @@ int fmc_prepare(struct fmdev *fmdev)
fmdev->rx.af_mode = FM_RX_RDS_AF_SWITCH_MODE_OFF;
fmdev->irq_info.retry = 0;

+ fmdev->tx_data.tx_frq = FM_UNDEFINED_FREQ;
+
fm_rx_reset_rds_cache(fmdev);
init_waitqueue_head(&fmdev->rx.rds.read_queue);

diff --git a/drivers/media/radio/wl128x/fmdrv_common.h b/drivers/media/radio/wl128x/fmdrv_common.h
index d9b9c6c..196ff7d 100644
--- a/drivers/media/radio/wl128x/fmdrv_common.h
+++ b/drivers/media/radio/wl128x/fmdrv_common.h
@@ -48,8 +48,8 @@ struct fm_reg_table {
#define SEARCH_LVL_SET 15
#define BAND_SET 16
#define MUTE_STATUS_SET 17
-#define RDS_PAUSE_LVL_SET 18
-#define RDS_PAUSE_DUR_SET 19
+#define AUD_PAUSE_LVL_SET 18
+#define AUD_PAUSE_DUR_SET 19
#define RDS_MEM_SET 20
#define RDS_BLK_B_SET 21
#define RDS_MSK_B_SET 22
@@ -84,11 +84,12 @@ struct fm_reg_table {

#define FM_POWER_MODE 254
#define FM_INTERRUPT 255
+#define STATION_VALID 123

/* Transmitter API */

#define CHANL_SET 55
-#define CHANL_BW_SET 56
+#define SCAN_SPACING_SET 56
#define REF_SET 57
#define POWER_ENB_SET 90
#define POWER_ATT_SET 58
@@ -103,7 +104,8 @@ struct fm_reg_table {
#define MONO_SET 66
#define MUTE 92
#define MPX_LMT_ENABLE 67
-#define PI_SET 93
+#define REF_ERR_SET 93
+#define PI_SET 68
#define ECC_SET 69
#define PTY 70
#define AF 71
@@ -120,6 +122,10 @@ struct fm_reg_table {
#define TX_AUDIO_LEVEL_TEST 96
#define TX_AUDIO_LEVEL_TEST_THRESHOLD 73
#define TX_AUDIO_INPUT_LEVEL_RANGE_SET 54
+#define TX_AUDIO_LEVEL_GET 7
+#define READ_FMANT_TUNE_VALUE 104
+
+/* New FM APIs (Rx and Tx) */
#define RX_ANTENNA_SELECT 87
#define I2C_DEV_ADDR_SET 86
#define REF_ERR_CALIB_PARAM_SET 88
@@ -131,7 +137,6 @@ struct fm_reg_table {
#define RSSI_BLOCK_SCAN_FREQ_SET 95
#define RSSI_BLOCK_SCAN_START 97
#define RSSI_BLOCK_SCAN_DATA_GET 5
-#define READ_FMANT_TUNE_VALUE 104

/* SKB helpers */
struct fm_skb_cb {
@@ -348,7 +353,7 @@ struct fm_event_msg_hdr {
* with this default values after loading RX firmware.
*/
#define FM_DEFAULT_RX_VOLUME 10
-#define FM_DEFAULT_RSSI_THRESHOLD 3
+#define FM_DEFAULT_RSSI_THRESHOLD 20

/* Range for TX power level in units for dB/uV */
#define FM_PWR_LVL_LOW 91
diff --git a/drivers/media/radio/wl128x/fmdrv_rx.c b/drivers/media/radio/wl128x/fmdrv_rx.c
index 43fb722..a806bda 100644
--- a/drivers/media/radio/wl128x/fmdrv_rx.c
+++ b/drivers/media/radio/wl128x/fmdrv_rx.c
@@ -156,7 +156,7 @@ static int fm_rx_set_channel_spacing(struct fmdev *fmdev, u32 spacing)

/* set channel spacing */
payload = spacing;
- ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload,
+ ret = fmc_send_cmd(fmdev, SCAN_SPACING_SET, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;
diff --git a/drivers/media/radio/wl128x/fmdrv_tx.c b/drivers/media/radio/wl128x/fmdrv_tx.c
index 6ea33e0..6d879fb 100644
--- a/drivers/media/radio/wl128x/fmdrv_tx.c
+++ b/drivers/media/radio/wl128x/fmdrv_tx.c
@@ -51,6 +51,7 @@ static int set_rds_text(struct fmdev *fmdev, u8 *rds_text)
u16 payload;
int ret;

+ *(u16 *)rds_text = cpu_to_be16(*(u16 *)rds_text);
ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text,
strlen(rds_text), NULL, NULL);
if (ret < 0)
@@ -66,26 +67,31 @@ static int set_rds_text(struct fmdev *fmdev, u8 *rds_text)
return 0;
}

-static int set_rds_data_mode(struct fmdev *fmdev, u8 mode)
+int set_rds_picode(struct fmdev *fmdev, u16 pi_val)
{
u16 payload;
int ret;

- /* Setting unique PI TODO: how unique? */
- payload = (u16)0xcafe;
+ payload = pi_val;
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,
+ return 0;
+}
+
+int set_rds_pty(struct fmdev *fmdev, u16 pty)
+{
+ u16 payload;
+ u32 ret;
+
+ payload = pty;
+ ret = fmc_send_cmd(fmdev, PTY, REG_WR, &payload,
sizeof(payload), NULL, NULL);
if (ret < 0)
return ret;

- /* TODO: RDS_MODE_GET? */
return 0;
}

@@ -101,7 +107,6 @@ static int set_rds_len(struct fmdev *fmdev, u8 type, u16 len)
if (ret < 0)
return ret;

- /* TODO: LENGTH_GET? */
return 0;
}

@@ -109,20 +114,17 @@ int fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
{
u16 payload;
int ret;
- u8 rds_text[] = "Zoom2\n";
+ u8 rds_text[] = "WL12XX Radio\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_len(fmdev, 2, 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 */
@@ -136,13 +138,6 @@ int fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
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;
@@ -156,7 +151,6 @@ int fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type)
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));
@@ -164,9 +158,6 @@ int fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type)
/* 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);
@@ -421,6 +412,8 @@ int fm_tx_set_freq(struct fmdev *fmdev, u32 freq_to_set)
tx->aud_mode = FM_STEREO_MODE;
tx->rds.flag = FM_RDS_DISABLE;

+ tx->tx_frq = freq_to_set * 1000; /* in KHz */
+
return 0;
}

diff --git a/drivers/media/radio/wl128x/fmdrv_tx.h b/drivers/media/radio/wl128x/fmdrv_tx.h
index 11ae2e4..8ed71bd 100644
--- a/drivers/media/radio/wl128x/fmdrv_tx.h
+++ b/drivers/media/radio/wl128x/fmdrv_tx.h
@@ -32,6 +32,7 @@ int fm_tx_set_radio_text(struct fmdev *, u8 *, u8);
int fm_tx_set_af(struct fmdev *, u32);
int fm_tx_set_preemph_filter(struct fmdev *, u32);
int fm_tx_get_tune_cap_val(struct fmdev *);
-
+int set_rds_picode(struct fmdev *, u16);
+int set_rds_pty(struct fmdev *, u16);
#endif

diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
index 077d369..494faaf 100644
--- a/drivers/media/radio/wl128x/fmdrv_v4l2.c
+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
@@ -210,6 +210,8 @@ static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl)
struct fmdev *fmdev = container_of(ctrl->handler,
struct fmdev, ctrl_handler);

+ int ret;
+
switch (ctrl->id) {
case V4L2_CID_AUDIO_VOLUME: /* set volume */
return fm_rx_set_volume(fmdev, (u16)ctrl->val);
@@ -224,6 +226,38 @@ static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_TUNE_PREEMPHASIS:
return fm_tx_set_preemph_filter(fmdev, (u8) ctrl->val);

+ case V4L2_CID_RDS_TX_PI:
+ ret = set_rds_picode(fmdev, ctrl->val);
+ if (ret < 0) {
+ fmerr("Failed to set RDS Radio PS Name\n");
+ return ret;
+ }
+ return 0;
+
+ case V4L2_CID_RDS_TX_PTY:
+ ret = set_rds_pty(fmdev, ctrl->val);
+ if (ret < 0) {
+ fmerr("Failed to set RDS Radio PS Name\n");
+ return ret;
+ }
+ return 0;
+
+ case V4L2_CID_RDS_TX_PS_NAME:
+ ret = fm_tx_set_radio_text(fmdev, ctrl->string, 1);
+ if (ret < 0) {
+ fmerr("Failed to set RDS Radio PS Name\n");
+ return ret;
+ }
+ return 0;
+
+ case V4L2_CID_RDS_TX_RADIO_TEXT:
+ ret = fm_tx_set_radio_text(fmdev, ctrl->string, 2);
+ if (ret < 0) {
+ fmerr("Failed to set RDS Radio Text\n");
+ return ret;
+ }
+ return 0;
+
default:
return -EINVAL;
}
@@ -455,6 +489,7 @@ static int fm_v4l2_vidioc_s_modulator(struct file *file, void *priv,
fmerr("Failed to set mono/stereo mode for TX\n");
return ret;
}
+
ret = fm_tx_set_rds_mode(fmdev, rds_mode);
if (ret < 0)
fmerr("Failed to set rds mode for TX\n");
@@ -549,6 +584,18 @@ int fm_v4l2_init_video_device(struct fmdev *fmdev, int radio_nr)
v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);

+ v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+ V4L2_CID_RDS_TX_PI, 0x0, 0xf, 1, 0x0);
+
+ v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+ V4L2_CID_RDS_TX_PTY, 0, 32, 1, 0);
+
+ v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+ V4L2_CID_RDS_TX_PS_NAME, 0, 0xf, 1, 0);
+
+ v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+ V4L2_CID_RDS_TX_RADIO_TEXT, 0, 0xff, 1, 0);
+
v4l2_ctrl_new_std_menu(&fmdev->ctrl_handler, &fm_ctrl_ops,
V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS,
0, V4L2_PREEMPHASIS_75_uS);
--
1.7.4.1

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