This file implements V4L2 controls for using the Texas Instruments
WL1273 FM Radio.
Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@xxxxxxxxx>
---
drivers/media/radio/Kconfig | 15 +
drivers/media/radio/Makefile | 1 +
drivers/media/radio/radio-wl1273.c | 1907 ++++++++++++++++++++++++++++++++++++
3 files changed, 1923 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/radio/radio-wl1273.c
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 83567b8..209fd37 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -452,4 +452,19 @@ config RADIO_TIMBERDALE
found behind the Timberdale FPGA on the Russellville board.
Enabling this driver will automatically select the DSP and tuner.
+config RADIO_WL1273
+ tristate "Texas Instruments WL1273 I2C FM Radio"
+ depends on I2C && VIDEO_V4L2 && SND
+ select FW_LOADER
+ ---help---
+ Choose Y here if you have this FM radio chip.
+
+ In order to control your radio card, you will need to use programs
+ that are compatible with the Video For Linux 2 API. Information on
+ this API and pointers to "v4l2" programs may be found at
+ <file:Documentation/video4linux/API.html>.
+
+ To compile this driver as a module, choose M here: the
+ module will be called radio-wl1273.
+
endif # RADIO_ADAPTERS
diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
index f615583..d297074 100644
--- a/drivers/media/radio/Makefile
+++ b/drivers/media/radio/Makefile
@@ -26,5 +26,6 @@ obj-$(CONFIG_RADIO_TEA5764) += radio-tea5764.o
obj-$(CONFIG_RADIO_SAA7706H) += saa7706h.o
obj-$(CONFIG_RADIO_TEF6862) += tef6862.o
obj-$(CONFIG_RADIO_TIMBERDALE) += radio-timb.o
+obj-$(CONFIG_RADIO_WL1273) += radio-wl1273.o
EXTRA_CFLAGS += -Isound
diff --git a/drivers/media/radio/radio-wl1273.c b/drivers/media/radio/radio-wl1273.c
new file mode 100644
index 0000000..473c194
--- /dev/null
+++ b/drivers/media/radio/radio-wl1273.c
@@ -0,0 +1,1907 @@
+/*
+ * Driver for the Texas Instruments WL1273 FM radio.
+ *
+ * Copyright (C) Nokia Corporation
+ * Author: Matti J. Aaltonen <matti.j.aaltonen@xxxxxxxxx>
+ *
+ * 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
+ */
+
+#undef DEBUG
+
+#include <asm/unaligned.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/mfd/wl1273-core.h>
+#include <linux/platform_device.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+
+#define DRIVER_DESC "Wl1273 FM Radio - V4L2"
+
+#define WL1273_POWER_SET_OFF 0
+#define WL1273_POWER_SET_FM (1 << 0)
+#define WL1273_POWER_SET_RDS (1 << 1)
+#define WL1273_POWER_SET_RETENTION (1 << 4)
+
+#define WL1273_PUPD_SET_OFF 0x00
+#define WL1273_PUPD_SET_ON 0x01
+#define WL1273_PUPD_SET_RETENTION 0x10
+
+#define WL1273_FREQ_MULT (10000 / 625)
+#define WL1273_INV_FREQ_MULT (625 / 10000)
+/*
+ * static unsigned char radio_band - Band
+ *
+ * The bands are 0=Japan, 1=USA-Europe. USA-Europe is the default.
+ */
+static unsigned char radio_band = 1;
+module_param(radio_band, byte, 0);
+MODULE_PARM_DESC(radio_band, "Band: 0=Japan, 1=USA-Europe*");
+
+/*
+ * static int radio_nr - The number of the radio device
+ *
+ * The default is 0.
+ */
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(radio_nr, "Radio Nr");
+
+struct wl1273_device {
+ struct v4l2_device v4l2dev;
+ struct video_device videodev;
+ struct device *dev;
+ struct wl1273_core *core;
+ struct file *owner;
+ char *write_buf;
+ bool rds_on;
+};
+
+static int wl1273_fm_set_tx_freq(struct wl1273_core *core, unsigned int freq)
+{
+ int r = 0;
+
+ if (freq < 76000) {
+ dev_err(&core->i2c_dev->dev,
+ "Frequency out of range: %d < %d\n",
+ freq, core->bands[core->band].bottom_frequency);
+ return -EDOM;
+ }
+
+ if (freq > 108000) {
+ dev_err(&core->i2c_dev->dev,
+ "Frequency out of range: %d > %d\n",
+ freq, core->bands[core->band].top_frequency);
+ return -EDOM;
+ }
+
+ /*
+ * The driver works better with this msleep,
+ * the documentation doesn't mention it.
+ */
+ msleep(5);
+ dev_dbg(&core->i2c_dev->dev, "%s: freq: %d kHz\n", __func__, freq);
+
+ INIT_COMPLETION(core->busy);
+ /* Set the current tx channel */
+ r = wl1273_fm_write_cmd(core, WL1273_CHANL_SET, freq / 10);
+ if (r)
+ return r;
+
+ /* wait for the FR IRQ */
+ r = wait_for_completion_timeout(&core->busy, msecs_to_jiffies(1000));
+ if (!r)
+ return -ETIMEDOUT;
+
+ dev_dbg(&core->i2c_dev->dev, "WL1273_CHANL_SET: %d\n", r);
+
+ /* Enable the output power */
+ INIT_COMPLETION(core->busy);
+ r = wl1273_fm_write_cmd(core, WL1273_POWER_ENB_SET, 1);
+ if (r)
+ return r;
+
+ /* wait for the POWER_ENB IRQ */
+ r = wait_for_completion_timeout(&core->busy, msecs_to_jiffies(1000));
+ if (!r)
+ return -ETIMEDOUT;
+
+ core->tx_frequency = freq;
+ dev_dbg(&core->i2c_dev->dev, "WL1273_POWER_ENB_SET: %d\n", r);
+
+ return 0;
+}
+
+static int wl1273_fm_set_rx_freq(struct wl1273_core *core, unsigned int freq)
+{
+ int r;
+ int f;
+
+ if (freq < core->bands[core->band].bottom_frequency) {
+ dev_err(&core->i2c_dev->dev,
+ "Frequency out of range: %d < %d\n",
+ freq, core->bands[core->band].bottom_frequency);
+ r = -EDOM;
+ goto err;
+ }
+
+ if (freq > core->bands[core->band].top_frequency) {
+ dev_err(&core->i2c_dev->dev,
+ "Frequency out of range: %d > %d\n",
+ freq, core->bands[core->band].top_frequency);
+ r = -EDOM;
+ goto err;
+ }
+
+ dev_dbg(&core->i2c_dev->dev, "%s: %dkHz\n", __func__, freq);
+
+ wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET,
+ core->irq_flags);
+
+ f = (freq - core->bands[core->band].bottom_frequency) / 50;
+ r = wl1273_fm_write_cmd(core, WL1273_FREQ_SET, f);
+ if (r)
+ goto err;
+
+ INIT_COMPLETION(core->busy);
+ r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET,
+ TUNER_MODE_PRESET);
+ if (r) {
+ complete(&core->busy);
+ goto err;
+ }
+
+ r = wait_for_completion_timeout(&core->busy, msecs_to_jiffies(2000));
+ if (!r)
+ return -ETIMEDOUT;
+
+ core->rd_index = 0;
+ core->wr_index = 0;
+ core->rx_frequency = freq;
+ return 0;
+
+err:
+ return r;
+}
+
+static int wl1273_fm_get_freq(struct wl1273_core *core)
+{
+ unsigned int freq;
+ u16 f;
+ int r;
+
+ if (core->mode == WL1273_MODE_RX) {
+ r = wl1273_fm_read_reg(core, WL1273_FREQ_SET, &f);
+ if (r)
+ return r;
+
+ dev_dbg(&core->i2c_dev->dev, "Freq get: 0x%04x\n", f);
+ freq = core->bands[core->band].bottom_frequency + 50 * f;
+ } else {
+ r = wl1273_fm_read_reg(core, WL1273_CHANL_SET, &f);
+ if (r)
+ return r;
+
+ freq = f * 10;
+ }
+
+ return freq;
+}
+
+/**
+ * wl1273_fm_upload_firmware_patch() - Upload the firmware.
+ * @core: A pointer to the device struct.
+ *
+ * The firmware file consists of arrays of bytes where the first byte
+ * gives the array length. The first byte in the file gives the
+ * number of these arrays.
+ */
+static int wl1273_fm_upload_firmware_patch(struct wl1273_core *core)
+{
+ unsigned int packet_num;
+ const struct firmware *fw_p;
+ const char *fw_name = "radio-wl1273-fw.bin";
+ struct i2c_client *client;
+ __u8 *ptr;
+ int i, n, len, r;
+ struct i2c_msg *msgs;
+
+ client = core->i2c_dev;
+ dev_dbg(&client->dev, "%s:\n", __func__);
+
+ if (request_firmware(&fw_p, fw_name, &client->dev)) {
+ dev_info(&client->dev, "%s - %s not found\n", __func__,
+ fw_name);
+
+ return 0;
+ }
+
+ ptr = (__u8 *) fw_p->data;
+ packet_num = ptr[0];
+ dev_dbg(&client->dev, "%s: packets: %d\n", __func__, packet_num);
+
+ msgs = kmalloc((packet_num + 1)*sizeof(struct i2c_msg), GFP_KERNEL);
+ if (!msgs) {
+ r = -ENOMEM;
+ goto out;
+ }
+
+ i = 1;
+ for (n = 0; n <= packet_num; n++) {
+ len = ptr[i];
+
+ dev_dbg(&client->dev, "%s: len[%d]: %d\n",
+ __func__, n, len);
+
+ if (i + len + 1 <= fw_p->size) {
+ msgs[n].addr = client->addr;
+ msgs[n].flags = 0;
+ msgs[n].len = len;
+ msgs[n].buf = ptr + i + 1;
+ } else {
+ break;
+ }
+
+ i += len + 1;
+ }
+
+ r = i2c_transfer(client->adapter, msgs, packet_num);
+ kfree(msgs);
+
+ if (r != packet_num) {
+ dev_err(&client->dev, "FW upload error: %d\n", r);
+ dev_dbg(&client->dev, "%d != %d\n", packet_num, r);
+
+ r = -EREMOTEIO;
+ goto out;
+ } else {
+ r = 0;
+ }
+
+ /* ignore possible error here */
+ wl1273_fm_write_cmd(core, WL1273_RESET, 0);
+ dev_dbg(&client->dev, "n: %d, i: %d\n", n, i);
+
+ if (n - 1 != packet_num)
+ dev_warn(&client->dev, "%s - incorrect firmware size.\n",
+ __func__);
+
+ if (i != fw_p->size)
+ dev_warn(&client->dev, "%s - inconsistent firmware.\n",
+ __func__);
+
+ dev_dbg(&client->dev, "%s - download OK, r: %d\n", __func__, r);
+
+out:
+ release_firmware(fw_p);
+ return r;
+}
+
+static int wl1273_fm_stop(struct wl1273_core *core)
+{
+ struct i2c_client *client = core->i2c_dev;
+ struct wl1273_fm_platform_data *pdata =
+ client->dev.platform_data;
+
+ if (core->mode == WL1273_MODE_RX) {
+ int r = wl1273_fm_write_cmd(core, WL1273_POWER_SET,
+ WL1273_POWER_SET_OFF);
+ if (r)
+ dev_err(&core->i2c_dev->dev,
+ "%s: POWER_SET fails: %d\n", __func__, r);
+ } else if (core->mode == WL1273_MODE_TX) {
+ int r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_OFF);
+ if (r)
+ dev_err(&core->i2c_dev->dev,
+ "%s: PUPD_SET fails: %d\n", __func__, r);
+ }
+
+ if (pdata->disable) {
+ pdata->disable();
+ dev_dbg(&core->i2c_dev->dev, "Back to reset\n");
+ }
+
+ return 0;
+}
+
+static int wl1273_fm_start(struct wl1273_core *core, int new_mode)
+{
+ struct i2c_client *client = core->i2c_dev;
+ struct wl1273_fm_platform_data *pdata =
+ client->dev.platform_data;
+ int r = -EINVAL;
+
+ if (pdata->enable && core->mode == WL1273_MODE_OFF) {
+ pdata->enable();
+ msleep(250);
+ }
+
+ if (new_mode == WL1273_MODE_RX) {
+ u16 val = WL1273_POWER_SET_FM;
+
+ if (core->rds_on)
+ val |= WL1273_POWER_SET_RDS;
+
+ /* If this fails try again */
+ r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, val);
+ if (r) {
+ msleep(100);
+
+ r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, val);
+ if (r) {
+ dev_err(&client->dev, "%s: POWER_SET fails.\n",
+ __func__);
+ goto fail;
+ }
+ }
+
+ /* rds buffer configuration */
+ core->wr_index = 0;
+ core->rd_index = 0;
+
+ } else if (new_mode == WL1273_MODE_TX) {
+ /* If this fails try again */
+ r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_ON);
+ if (r) {
+ msleep(100);
+ r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_ON);
+ if (r) {
+ dev_err(&client->dev, "%s: PUPD_SET fails.\n",
+ __func__);
+ goto fail;
+ }
+ }
+
+ if (core->rds_on)
+ r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 1);
+ else
+ r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 0);
+ } else {
+ dev_warn(&client->dev, "%s: Illegal mode.\n", __func__);
+ }
+
+ if (core->mode == WL1273_MODE_OFF) {
+ dev_dbg(&core->i2c_dev->dev, "Out of reset\n");
+
+ r = wl1273_fm_upload_firmware_patch(core);
+ if (r)
+ dev_warn(&client->dev, "Firmware upload failed.\n");
+ }
+
+ return 0;
+fail:
+ if (pdata->disable)
+ pdata->disable();
+
+ dev_dbg(&client->dev, "%s: return: %d\n", __func__, r);
+ return r;
+}
+
+static int wl1273_fm_suspend(struct wl1273_core *core)
+{
+ int r = 0;
+ struct i2c_client *client = core->i2c_dev;
+
+ /* Cannot go from OFF to SUSPENDED */
+ if (core->mode == WL1273_MODE_RX)
+ r = wl1273_fm_write_cmd(core, WL1273_POWER_SET,
+ WL1273_POWER_SET_RETENTION);
+ else if (core->mode == WL1273_MODE_TX)
+ r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_RETENTION);
+ else
+ r = -EINVAL;
+
+ if (r) {
+ dev_err(&client->dev, "%s: POWER_SET fails: %d\n", __func__, r);
+ goto out;
+ }
+
+out:
+ return r;
+}
+
+static int wl1273_fm_set_mode(struct wl1273_core *core, int mode)
+{
+ int r;
+ int old_mode;
+
+ dev_dbg(&core->i2c_dev->dev, "%s\n", __func__);
+ dev_dbg(&core->i2c_dev->dev, "Allowed modes: %d\n",
+ core->allowed_modes);
+
+ mutex_lock(&core->lock);
+ old_mode = core->mode;
+
+ switch (mode) {
+ case WL1273_MODE_RX:
+ case WL1273_MODE_TX:
+ if (mode == WL1273_MODE_RX &&
+ !(core->allowed_modes & WL1273_RX_ALLOWED)) {
+ r = -EPERM;
+ goto out;
+ } else if (mode == WL1273_MODE_TX &&
+ !(core->allowed_modes & WL1273_TX_ALLOWED)) {
+ r = -EPERM;
+ goto out;
+ }
+
+ r = wl1273_fm_start(core, mode);
+ if (r) {
+ dev_err(&core->i2c_dev->dev, "%s: Cannot start.\n",
+ __func__);
+ wl1273_fm_stop(core);
+ goto out;
+ } else {
+ core->mode = mode;
+ r = wl1273_fm_set_audio(core, core->audio_mode);
+ if (r)
+ dev_err(&core->i2c_dev->dev,
+ "Cannot set audio mode.\n");
+ }
+
+ r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET,
+ core->irq_flags);
+ if (r) {
+ dev_err(&core->i2c_dev->dev,
+ "INT_MASK_SET fails.\n");
+ goto out;
+ }
+
+ /* remember previous settings */
+ if (mode == WL1273_MODE_RX) {
+ r = wl1273_fm_set_rx_freq(core, core->rx_frequency);
+ if (r) {
+ dev_err(&core->i2c_dev->dev,
+ "set freq fails: %d.\n", r);
+ goto out;
+ }
+
+ r = wl1273_fm_set_volume(core, core->volume);
+ if (r) {
+ dev_err(&core->i2c_dev->dev,
+ "set volume fails: %d.\n", r);
+ goto out;
+ }
+
+ dev_dbg(&core->i2c_dev->dev, "%s: Set vol: %d.\n",
+ __func__, core->volume);
+ } else {
+ r = wl1273_fm_set_tx_freq(core, core->tx_frequency);
+ if (r) {
+ dev_err(&core->i2c_dev->dev,
+ "set freq fails: %d.\n", r);
+ goto out;
+ }
+ }
+
+ break;
+
+ case WL1273_MODE_OFF:
+ r = wl1273_fm_stop(core);
+ if (r)
+ dev_err(&core->i2c_dev->dev,
+ "%s: Off fails: %d\n", __func__, r);
+ else
+ core->mode = WL1273_MODE_OFF;
+
+ break;
+
+ case WL1273_MODE_SUSPENDED:
+ r = wl1273_fm_suspend(core);
+ if (r)
+ dev_err(&core->i2c_dev->dev,
+ "%s: Suspend fails: %d\n", __func__, r);
+ else
+ core->mode = WL1273_MODE_SUSPENDED;
+
+ break;
+
+ default:
+ dev_err(&core->i2c_dev->dev, "%s: Unknown mode: %d\n",
+ __func__, mode);
+ r = -EINVAL;
+ break;
+ }
+
+out:
+ if (r)
+ core->mode = old_mode ;
+
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+static int wl1273_fm_set_seek(struct wl1273_core *core,
+ unsigned int wrap_around,
+ unsigned int seek_upward,
+ int level)
+{
+ int r = 0;
+ unsigned int dir = (seek_upward == 0) ? 0 : 1;
+ unsigned int rx_frequency, top_frequency, bottom_frequency;
+
+ rx_frequency = core->rx_frequency;
+ top_frequency = core->bands[core->band].top_frequency;
+ bottom_frequency = core->bands[core->band].bottom_frequency;
+ dev_dbg(&core->i2c_dev->dev, "core->rx_frequency: %d\n",
+ rx_frequency);
+
+ if (dir && rx_frequency + core->spacing <= top_frequency)
+ r = wl1273_fm_set_rx_freq(core, rx_frequency + core->spacing);
+ else if (dir && wrap_around)
+ r = wl1273_fm_set_rx_freq(core, bottom_frequency);
+ else if (rx_frequency - core->spacing >= bottom_frequency)
+ r = wl1273_fm_set_rx_freq(core, rx_frequency - core->spacing);
+ else if (wrap_around)
+ r = wl1273_fm_set_rx_freq(core, top_frequency);
+
+ if (r)
+ goto out;
+
+ if (level < SCHAR_MIN || level > SCHAR_MAX)
+ return -EINVAL;
+
+ INIT_COMPLETION(core->busy);
+ dev_dbg(&core->i2c_dev->dev, "%s: BUSY\n", __func__);
+
+ r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET,
+ core->irq_flags);
+ if (r)
+ goto out;
+
+ dev_dbg(&core->i2c_dev->dev, "%s\n", __func__);
+
+ r = wl1273_fm_write_cmd(core, WL1273_SEARCH_LVL_SET, level);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_write_cmd(core, WL1273_SEARCH_DIR_SET, dir);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET,
+ TUNER_MODE_AUTO_SEEK);
+ if (r)
+ goto out;
+
+ wait_for_completion_timeout(&core->busy, msecs_to_jiffies(1000));
+ if (!(core->irq_received & WL1273_BL_EVENT))
+ goto out;
+
+ core->irq_received &= ~WL1273_BL_EVENT;
+
+ if (!wrap_around)
+ goto out;
+
+ /* Wrap around */
+ dev_dbg(&core->i2c_dev->dev, "Wrap around in HW seek.\n");
+
+ if (seek_upward)
+ rx_frequency = bottom_frequency;
+ else
+ rx_frequency = top_frequency;
+
+ r = wl1273_fm_set_rx_freq(core, rx_frequency);
+ if (r)
+ goto out;
+
+ INIT_COMPLETION(core->busy);
+ dev_dbg(&core->i2c_dev->dev, "%s: BUSY\n", __func__);
+
+ r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET,
+ TUNER_MODE_AUTO_SEEK);
+ if (r)
+ goto out;
+
+ wait_for_completion_timeout(&core->busy, msecs_to_jiffies(1000));
+out:
+ dev_dbg(&core->i2c_dev->dev, "%s: Err: %d\n", __func__, r);
+ return r;
+}
+
+/**
+ * wl1273_fm_set_band() - Change the current band.
+ * @core: A pointer to the device structure.
+ * @band: The ID of the new band.
+ *
+ * Wl1273 supports only two bands USA/Europe and Japan.
+ */
+static int wl1273_fm_set_band(struct wl1273_core *core, unsigned int band)
+{
+ int r = 0;
+ unsigned int new_frequency = 0;
+
+ dev_err(&core->i2c_dev->dev, "%s: number of resion: %d\n", __func__,
+ core->number_of_bands);
+
+ if (band == core->band)
+ return 0;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ if (band >= core->number_of_bands)
+ return -EINVAL;
+
+ mutex_lock(&core->lock);
+
+ core->band = band;
+
+ if (core->rx_frequency < core->bands[core->band].bottom_frequency)
+ new_frequency = core->bands[core->band].bottom_frequency;
+ else if (core->rx_frequency > core->bands[core->band].top_frequency)
+ new_frequency = core->bands[core->band].top_frequency;
+
+ if (new_frequency) {
+ core->rx_frequency = new_frequency;
+ if (core->mode == WL1273_MODE_RX) {
+ r = wl1273_fm_set_rx_freq(core, new_frequency);
+ if (r)
+ goto out;
+ }
+ }
+
+ new_frequency = 0;
+ if (core->tx_frequency < core->bands[core->band].bottom_frequency)
+ new_frequency = core->bands[core->band].bottom_frequency;
+ else if (core->tx_frequency > core->bands[core->band].top_frequency)
+ new_frequency = core->bands[core->band].top_frequency;
+
+ if (new_frequency) {
+ core->tx_frequency = new_frequency;
+
+ if (core->mode == WL1273_MODE_TX) {
+ r = wl1273_fm_set_tx_freq(core, new_frequency);
+ if (r)
+ goto out;
+ }
+ }
+
+out:
+ mutex_unlock(&core->lock);
+ return r;
+}
+
+/**
+ * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.
+ * @core: A pointer to the device struct.
+ */
+static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_core *core)
+{
+ struct i2c_client *client = core->i2c_dev;
+ u16 val;
+ int r;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ r = wl1273_fm_read_reg(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
+ if (r) {
+ dev_err(&client->dev, "%s: I2C error: %d\n", __func__, r);
+ goto out;
+ }
+
+out:
+ return val;
+}
+
+/**
+ * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
+ * @core: A pointer to the device struct.
+ * @preemphasis: The new pre-amphasis value.
+ *
+ * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
+ * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
+ */
+static int wl1273_fm_set_preemphasis(struct wl1273_core *core,
+ unsigned int preemphasis)
+{
+ int r;
+ u16 em;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ mutex_lock(&core->lock);
+
+ switch (preemphasis) {
+ case V4L2_PREEMPHASIS_DISABLED:
+ em = 1;
+ break;
+ case V4L2_PREEMPHASIS_50_uS:
+ em = 0;
+ break;
+ case V4L2_PREEMPHASIS_75_uS:
+ em = 2;
+ break;
+ default:
+ r = -EINVAL;
+ goto out;
+ }
+
+ r = wl1273_fm_write_cmd(core, WL1273_PREMPH_SET, em);
+ if (r)
+ goto out;
+
+ core->preemphasis = preemphasis;
+
+out:
+ mutex_unlock(&core->lock);
+ return r;
+}
+
+static int wl1273_fm_rds_on(struct wl1273_core *core)
+{
+ int r;
+
+ dev_dbg(&core->i2c_dev->dev, "%s\n", __func__);
+
+ r = wl1273_fm_write_cmd(core, WL1273_POWER_SET,
+ WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_set_rx_freq(core, core->rx_frequency);
+ if (r)
+ dev_err(&core->i2c_dev->dev, "set freq fails: %d.\n", r);
+out:
+ return r;
+}
+
+static int wl1273_fm_rds_off(struct wl1273_core *core)
+{
+ struct device *dev = &core->i2c_dev->dev;
+ int r;
+
+ core->irq_flags &= ~WL1273_RDS_EVENT;
+
+ r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET,
+ core->irq_flags);
+ if (r)
+ goto out;
+
+ /* stop rds reception */
+ cancel_delayed_work(&core->work);
+
+ /* Service pending read */
+ wake_up_interruptible(&core->read_queue);
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
+
+out:
+ dev_dbg(dev, "%s: exiting...\n", __func__);
+
+ return r;
+}
+
+static int wl1273_fm_set_rds(struct wl1273_core *core, unsigned int new_mode)
+{
+ int r = 0;
+ struct i2c_client *client = core->i2c_dev;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ if (new_mode == WL1273_RDS_RESET) {
+ r = wl1273_fm_write_cmd(core, WL1273_RDS_CNTRL_SET, 1);
+ return r;
+ }
+
+ mutex_lock(&core->lock);
+
+ if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
+ r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 0);
+ } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
+ r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 1);
+ } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
+ r = wl1273_fm_rds_off(core);
+ } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
+ r = wl1273_fm_rds_on(core);
+ } else {
+ dev_err(&client->dev, "%s: Unknown mode: %d\n", __func__,
+ new_mode);
+ r = -EINVAL;
+ }
+
+ if (!r)
+ core->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
+
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ unsigned char *s;
+ u16 val;
+ int r;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (radio->core->mode != WL1273_MODE_TX)
+ return count;
+
+ if (!radio->rds_on) {
+ dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
+ return 0;
+ }
+
+ if (mutex_lock_interruptible(&radio->core->lock))
+ return -EINTR;
+
+
+ /*
+ * Multiple processes can open the device, but only
+ * one gets to write to it.
+ */
+ if (radio->owner && radio->owner != file) {
+ r = -EBUSY;
+ goto out;
+ }
+ radio->owner = file;
+
+ /* Manual Mode */
+ if (count > 255)
+ val = 255;
+ else
+ val = count;
+
+ wl1273_fm_write_cmd(radio->core, WL1273_RDS_CONFIG_DATA_SET, val);
+
+ if (copy_from_user(radio->write_buf + 1, buf, val)) {
+ r = -EFAULT;
+ goto out;
+ }
+
+ dev_dbg(radio->dev, "Count: %d\n", val);
+ dev_dbg(radio->dev, "From user: \"%s\"\n", s);
+
+ radio->write_buf[0] = WL1273_RDS_DATA_SET;
+ wl1273_fm_write_data(radio->core, radio->write_buf, val + 1);
+
+ r = val;
+out:
+ mutex_unlock(&radio->core->lock);
+
+ return r;
+}
+
+static unsigned int wl1273_fm_fops_poll(struct file *file,
+ struct poll_table_struct *pts)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ unsigned int rd_index, wr_index;
+
+ /* TODO: handle the case of multiple readers */
+
+ poll_wait(file, &core->read_queue, pts);
+
+ rd_index = core->rd_index;
+ wr_index = core->wr_index;
+ if (rd_index != wr_index)
+ return POLLIN | POLLRDNORM;
+
+ return 0;
+}
+
+static int wl1273_fm_fops_open(struct file *file)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (core->mode == WL1273_MODE_RX && core->rds_on && !radio->rds_on) {
+ dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ core->irq_flags |= WL1273_RDS_EVENT;
+
+ r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET,
+ core->irq_flags);
+ if (r) {
+ mutex_unlock(&core->lock);
+ goto out;
+ }
+
+ radio->rds_on = true;
+ mutex_unlock(&core->lock);
+ }
+out:
+ return r;
+}
+
+static int wl1273_fm_fops_release(struct file *file)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (radio->rds_on) {
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ core->irq_flags &= ~WL1273_RDS_EVENT;
+
+ r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET,
+ core->irq_flags);
+ if (r) {
+ mutex_unlock(&core->lock);
+ goto out;
+ }
+
+ radio->rds_on = false;
+ mutex_unlock(&core->lock);
+ }
+
+ if (file == radio->owner)
+ radio->owner = NULL;
+out:
+ return r;
+}
+
+static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ int r = 0;
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ unsigned int block_count = 0;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (radio->core->mode != WL1273_MODE_RX)
+ return 0;
+
+ if (!radio->rds_on) {
+ dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
+ return 0;
+ }
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ /*
+ * Multiple processes can open the device, but only
+ * one gets to read from it.
+ */
+ if (radio->owner && radio->owner != file) {
+ r = -EBUSY;
+ goto out;
+ }
+ radio->owner = file;
+
+ /* block if no new data available */
+ while (core->wr_index == core->rd_index) {
+ if (file->f_flags & O_NONBLOCK) {
+ r = -EWOULDBLOCK;
+ goto out;
+ }
+
+ if (wait_event_interruptible(core->read_queue,
+ core->wr_index !=
+ core->rd_index) < 0) {
+ r = -EINTR;
+ goto out;
+ }
+ }
+
+ /* calculate block count from byte count */
+ count /= 3;
+
+ /* copy RDS blocks from the internal buffer and to user buffer */
+
+ while (block_count < count) {
+ if (core->rd_index == core->wr_index)
+ break;
+
+ /* always transfer complete RDS blocks */
+ if (copy_to_user(buf, &core->buffer[core->rd_index], 3))
+ break;
+
+ /* increment and wrap the read pointer */
+ core->rd_index += 3;
+ if (core->rd_index >= core->buf_size)
+ core->rd_index = 0;
+
+ /* increment counters */
+ block_count++;
+ buf += 3;
+ r += 3;
+ }
+
+out:
+ dev_dbg(radio->dev, "%s: exit\n", __func__);
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+static const struct v4l2_file_operations wl1273_fops = {
+ .owner = THIS_MODULE,
+ .read = wl1273_fm_fops_read,
+ .write = wl1273_fm_fops_write,
+ .poll = wl1273_fm_fops_poll,
+ .ioctl = video_ioctl2,
+ .open = wl1273_fm_fops_open,
+ .release = wl1273_fm_fops_release,
+};
+
+static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *capability)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
+ sizeof(capability->driver));
+ strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
+ sizeof(capability->card));
+ strlcpy(capability->bus_info, "I2C", sizeof(capability->bus_info));
+
+ capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
+ V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
+ V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
+ V4L2_CAP_RDS_OUTPUT;
+
+ return 0;
+}
+
+static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
+ unsigned int *i)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ *i = 0;
+
+ return 0;
+}
+
+static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
+ unsigned int i)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (i != 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int wl1273_fm_vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ switch (qc->id) {
+ case V4L2_CID_AUDIO_VOLUME:
+ return v4l2_ctrl_query_fill(qc, 0, WL1273_MAX_VOLUME, 1,
+ WL1273_DEFAULT_VOLUME);
+ case V4L2_CID_AUDIO_MUTE:
+ return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+
+ case V4L2_CID_TUNE_PREEMPHASIS:
+ return v4l2_ctrl_query_fill(qc, V4L2_PREEMPHASIS_DISABLED,
+ V4L2_PREEMPHASIS_75_uS, 1,
+ V4L2_PREEMPHASIS_50_uS);
+ case V4L2_CID_TUNE_POWER_LEVEL:
+ return v4l2_ctrl_query_fill(qc, 0, 37, 1, 4);
+
+ case V4L2_CID_FM_RX_BAND:
+ return v4l2_ctrl_query_fill(qc, V4L2_FM_BAND_OTHER,
+ V4L2_FM_BAND_JAPAN, 1,
+ V4L2_FM_BAND_OTHER);
+ }
+ return -EINVAL;
+}
+
+static int wl1273_fm_vidioc_querymenu(struct file *file, void *priv,
+ struct v4l2_querymenu *qm)
+{
+ static u32 fm_rx_bands[] = {
+ V4L2_FM_BAND_OTHER,
+ V4L2_FM_BAND_JAPAN,
+ V4L2_CTRL_MENU_IDS_END
+ };
+ struct v4l2_queryctrl qctrl;
+ int r;
+
+ qctrl.id = qm->id;
+ r = wl1273_fm_vidioc_queryctrl(file, priv, &qctrl);
+ if (r)
+ return r;
+
+ switch (qm->id) {
+ case V4L2_CID_FM_RX_BAND:
+ return v4l2_ctrl_query_menu_valid_items(qm, fm_rx_bands);
+ }
+
+ return v4l2_ctrl_query_menu(qm, &qctrl, NULL);
+}
+
+/**
+ * wl1273_fm_set_tx_power() - Set the transmission power value.
+ * @core: A pointer to the device struct.
+ * @power: The new power value.
+ */
+static int wl1273_fm_set_tx_power(struct wl1273_core *core, u16 power)
+{
+ int r;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ mutex_lock(&core->lock);
+
+ r = wl1273_fm_write_cmd(core, WL1273_POWER_LEV_SET, power);
+ if (r)
+ goto out;
+
+ core->tx_power = power;
+
+out:
+ mutex_unlock(&core->lock);
+ return r;
+}
+
+#define WL1273_SPACING_50kHz 1
+#define WL1273_SPACING_100kHz 2
+#define WL1273_SPACING_200kHz 4
+
+static int wl1273_fm_tx_set_spacing(struct wl1273_core *core,
+ unsigned int spacing)
+{
+ int r;
+
+ if (spacing == 0) {
+ r = wl1273_fm_write_cmd(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_100kHz);
+ core->spacing = 100;
+ } else if (spacing - 50 < 25) {
+ r = wl1273_fm_write_cmd(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_50kHz);
+ core->spacing = 50;
+ } else if (spacing - 100 < 50) {
+ r = wl1273_fm_write_cmd(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_100kHz);
+ core->spacing = 100;
+ } else {
+ r = wl1273_fm_write_cmd(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_200kHz);
+ core->spacing = 200;
+ }
+
+ return r;
+}
+
+static int wl1273_fm_vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ u16 val;
+ int r = 0;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ if (core->mode == WL1273_MODE_RX)
+ r = wl1273_fm_read_reg(core, WL1273_MUTE_STATUS_SET,
+ &val);
+ else
+ r = wl1273_fm_read_reg(core, WL1273_MUTE, &val);
+
+ if (r)
+ goto out;
+
+ dev_dbg(radio->dev,
+ "MUTE STATUS GET: 0x%02x\n", val);
+
+ if (val)
+ ctrl->value = 1;
+ else
+ ctrl->value = 0;
+
+ break;
+
+ case V4L2_CID_AUDIO_VOLUME:
+ ctrl->value = core->volume;
+ break;
+
+ case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+ ctrl->value = wl1273_fm_get_tx_ctune(core);
+ break;
+
+ case V4L2_CID_TUNE_PREEMPHASIS:
+ ctrl->value = core->preemphasis;
+ break;
+
+ case V4L2_CID_TUNE_POWER_LEVEL:
+ ctrl->value = core->tx_power;
+ break;
+
+ case WL1273_CID_FM_BAND:
+ ctrl->value = core->band;
+ break;
+
+ default:
+ dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
+ __func__, ctrl->id);
+ break;
+ }
+
+out:
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+#define WL1273_MUTE_SOFT_ENABLE (1 << 0)
+#define WL1273_MUTE_AC (1 << 1)
+#define WL1273_MUTE_HARD_LEFT (1 << 2)
+#define WL1273_MUTE_HARD_RIGHT (1 << 3)
+#define WL1273_MUTE_SOFT_FORCE (1 << 4)
+
+static int wl1273_fm_vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ if (core->mode == WL1273_MODE_RX && ctrl->value)
+ r = wl1273_fm_write_cmd(core,
+ WL1273_MUTE_STATUS_SET,
+ WL1273_MUTE_HARD_LEFT |
+ WL1273_MUTE_HARD_RIGHT);
+ else if (core->mode == WL1273_MODE_RX)
+ r = wl1273_fm_write_cmd(core,
+ WL1273_MUTE_STATUS_SET, 0x0);
+ else if (core->mode == WL1273_MODE_TX && ctrl->value)
+ r = wl1273_fm_write_cmd(core, WL1273_MUTE, 1);
+ else if (core->mode == WL1273_MODE_TX)
+ r = wl1273_fm_write_cmd(core, WL1273_MUTE, 0);
+
+ mutex_unlock(&core->lock);
+ break;
+
+ case V4L2_CID_AUDIO_VOLUME: {
+ u16 val;
+
+ r = wl1273_fm_read_reg(core, WL1273_VOLUME_SET, &val);
+ if (r)
+ break;
+
+ ctrl->value = val;
+ break;
+ }
+
+ case V4L2_CID_TUNE_PREEMPHASIS:
+ r = wl1273_fm_set_preemphasis(core, ctrl->value);
+ break;
+
+ case V4L2_CID_TUNE_POWER_LEVEL:
+ r = wl1273_fm_set_tx_power(core, ctrl->value);
+ break;
+
+ case WL1273_CID_FM_BAND:
+ r = wl1273_fm_set_band(core, ctrl->value);
+ break;
+
+ default:
+ dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
+ __func__, ctrl->id);
+ break;
+ }
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+ return r;
+}
+
+static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
+ struct v4l2_audio *audio)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (audio->index > 1)
+ return -EINVAL;
+
+ strlcpy(audio->name, "Radio", sizeof(audio->name));
+ audio->capability = V4L2_AUDCAP_STEREO;
+
+ return 0;
+}
+
+static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *audio)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (audio->index != 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+#define WL1273_RDS_NOT_SYNCHRONIZED 0
+#define WL1273_RDS_SYNCHRONIZED 1
+
+static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *tuner)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ u16 val;
+ int r;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (tuner->index > 0)
+ return -EINVAL;
+
+ strcpy(tuner->name, WL1273_FM_DRIVER_NAME);
+ tuner->type = V4L2_TUNER_RADIO;
+
+ tuner->rangelow =
+ core->bands[core->band].bottom_frequency * WL1273_FREQ_MULT;
+ tuner->rangehigh =
+ core->bands[core->band].top_frequency * WL1273_FREQ_MULT;
+
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS;
+
+ if (core->mode != WL1273_MODE_RX)
+ return 0;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = wl1273_fm_read_reg(core, WL1273_RSSI_LVL_GET, &val);
+ if (r)
+ goto out;
+
+ tuner->signal = val * 256;
+ dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
+
+ tuner->afc = 0;
+
+ r = wl1273_fm_read_reg(core, WL1273_RDS_SYNC_GET, &val);
+ if (r)
+ goto out;
+
+ if (val == WL1273_RDS_SYNCHRONIZED)
+ tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
+out:
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *tuner)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (tuner->index > 0)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = wl1273_fm_set_mode(core, WL1273_MODE_RX);
+ if (r)
+ goto out;
+
+ if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
+ r = wl1273_fm_set_rds(core, WL1273_RDS_ON);
+ else
+ r = wl1273_fm_set_rds(core, WL1273_RDS_OFF);
+
+ if (r)
+ dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
+
+ if (tuner->audmode == V4L2_TUNER_MODE_MONO)
+ r = wl1273_fm_write_cmd(core, WL1273_MOST_MODE_SET,
+ WL1273_RX_MONO);
+ else
+ r = wl1273_fm_write_cmd(core, WL1273_MOST_MODE_SET,
+ WL1273_RX_STEREO);
+
+ if (r < 0)
+ dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
+ ": set tuner mode failed with %d\n", r);
+out:
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *freq)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ freq->type = V4L2_TUNER_RADIO;
+ freq->frequency = wl1273_fm_get_freq(core) * WL1273_FREQ_MULT;
+
+ mutex_unlock(&core->lock);
+
+ return 0;
+}
+
+static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *freq)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ int r;
+
+ dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
+
+ if (freq->type != V4L2_TUNER_RADIO) {
+ dev_dbg(radio->dev,
+ "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
+ return -EINVAL;
+ }
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, core->irq_flags);
+
+ if (core->mode == WL1273_MODE_RX) {
+ r = wl1273_fm_set_rx_freq(core, freq->frequency *
+ WL1273_INV_FREQ_MULT);
+ if (r)
+ dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
+ ": set frequency failed with %d\n", r);
+ } else {
+ r = wl1273_fm_set_tx_freq(core, freq->frequency *
+ WL1273_INV_FREQ_MULT);
+ if (r)
+ dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
+ ": set frequency failed with %d\n", r);
+ }
+
+ mutex_unlock(&core->lock);
+
+ dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
+ return r;
+}
+
+static int wl1273_fm_vidioc_g_hw_freq_seek(struct file *file, void *priv,
+ struct v4l2_hw_freq_seek *seek)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (core->mode != WL1273_MODE_RX)
+ return 0;
+
+ if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ mutex_unlock(&core->lock);
+
+ return 0;
+}
+
+#define WL1273_DEFAULT_SEEK_LEVEL 7
+
+static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
+ struct v4l2_hw_freq_seek *seek)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ int r;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = wl1273_fm_set_mode(core, WL1273_MODE_RX);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_tx_set_spacing(core, seek->spacing);
+ if (r)
+ dev_warn(radio->dev, "HW seek failed: %d\n", r);
+
+ r = wl1273_fm_set_seek(core, seek->wrap_around, seek->seek_upward,
+ WL1273_DEFAULT_SEEK_LEVEL);
+ if (r)
+ dev_warn(radio->dev, "HW seek failed: %d\n", r);
+
+ mutex_unlock(&core->lock);
+ out:
+ return r;
+}
+
+static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
+ struct v4l2_modulator *modulator)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (modulator->index > 0)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = wl1273_fm_set_mode(core, WL1273_MODE_TX);
+ if (r)
+ goto out;
+
+ if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
+ r = wl1273_fm_set_rds(core, WL1273_RDS_ON);
+ else
+ r = wl1273_fm_set_rds(core, WL1273_RDS_OFF);
+
+out:
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
+ struct v4l2_modulator *modulator)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ modulator->rangelow =
+ core->bands[core->band].bottom_frequency * WL1273_FREQ_MULT;
+ modulator->rangehigh =
+ core->bands[core->band].top_frequency * WL1273_FREQ_MULT;
+
+ modulator->capability = V4L2_TUNER_CAP_RDS;
+
+ if (core->rds_on)
+ modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
+ else
+ modulator->txsubchans &= ~V4L2_TUNER_SUB_RDS;
+
+ mutex_unlock(&core->lock);
+
+ return 0;
+}
+
+static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
+{
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+ struct wl1273_core *core = radio->core;
+ u16 val;
+ int r;
+
+ dev_info(radio->dev, DRIVER_DESC);
+
+ if (core->mode == WL1273_MODE_OFF) {
+ dev_info(radio->dev, "Mode: Off\n");
+ return 0;
+ }
+
+ if (core->mode == WL1273_MODE_SUSPENDED) {
+ dev_info(radio->dev, "Mode: Suspended\n");
+ return 0;
+ }
+
+ r = wl1273_fm_read_reg(core, WL1273_ASIC_ID_GET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get ASIC_ID fails.\n", __func__);
+ else
+ dev_info(radio->dev, "ASIC_ID: 0x%04x\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_ASIC_VER_GET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get ASIC_VER fails.\n",
+ __func__);
+ else
+ dev_info(radio->dev, "ASIC Version: 0x%04x\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_FIRM_VER_GET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get FIRM_VER fails.\n", __func__);
+ else
+ dev_info(radio->dev, "FW version: %d(0x%04x)\n", val, val);
+
+ /* TODO: Add TX stuff */
+ if (core->mode != WL1273_MODE_RX)
+ return 0;
+
+ r = wl1273_fm_read_reg(core, WL1273_FREQ_SET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get FREQ fails.\n", __func__);
+ else
+ dev_info(radio->dev, "RX Frequency: %dkHz\n",
+ core->bands[core->band].bottom_frequency + val*50);
+
+ r = wl1273_fm_read_reg(core, WL1273_MOST_MODE_SET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get MOST_MODE fails.\n",
+ __func__);
+ else if (val == 0)
+ dev_info(radio->dev,
+ "MOST_MODE: Stereo output according to blend\n");
+ else if (val == 1)
+ dev_info(radio->dev, "MOST_MODE: Force mono output\n");
+ else
+ dev_info(radio->dev, "MOST_MODE: Unexpected value: %d\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_MOST_BLEND_SET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get MOST_BLEND fails.\n", __func__);
+ else if (val == 0)
+ dev_info(radio->dev,
+ "MOST_BLEND: Switched blend with hysteresis.\n");
+ else if (val == 1)
+ dev_info(radio->dev, "MOST_BLEND: Soft blend.\n");
+ else
+ dev_info(radio->dev, "MOST_BLEND: Unexpected value: %d\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_STEREO_GET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get STEREO fails.\n", __func__);
+ else if (val == 0)
+ dev_info(radio->dev, "STEREO: Not detected\n");
+ else if (val == 1)
+ dev_info(radio->dev, "STEREO: Detected\n");
+ else
+ dev_info(radio->dev, "STEREO: Unexpected value: %d\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_RSSI_LVL_GET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get RSSI_LVL fails.\n", __func__);
+ else
+ dev_info(radio->dev, "RX signal strength: %d\n", (s16) val);
+
+ r = wl1273_fm_read_reg(core, WL1273_POWER_SET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get POWER fails.\n", __func__);
+ else
+ dev_info(radio->dev, "POWER: 0x%04x\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_INT_MASK_SET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get INT_MASK fails.\n", __func__);
+ else
+ dev_info(radio->dev, "INT_MASK: 0x%04x\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_RDS_SYNC_GET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n",
+ __func__);
+ else if (val == 0)
+ dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
+
+ else if (val == 1)
+ dev_info(radio->dev, "RDS_SYNC: Synchronized\n");
+ else
+ dev_info(radio->dev, "RDS_SYNC: Unexpected value: %d\n", val);
+
+ r = wl1273_fm_read_reg(core, WL1273_I2S_MODE_CONFIG_SET, &val);
+ if (r)
+ dev_err(radio->dev, "%s: Get I2S_MODE_CONFIG fails.\n",
+ __func__);
+ else
+ dev_info(radio->dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
+
+ return 0;
+}
+
+static void wl1273_vdev_release(struct video_device *dev)
+{
+}
+
+static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
+ .vidioc_querycap = wl1273_fm_vidioc_querycap,
+ .vidioc_g_input = wl1273_fm_vidioc_g_input,
+ .vidioc_s_input = wl1273_fm_vidioc_s_input,
+ .vidioc_queryctrl = wl1273_fm_vidioc_queryctrl,
+ .vidioc_querymenu = wl1273_fm_vidioc_querymenu,
+ .vidioc_g_ctrl = wl1273_fm_vidioc_g_ctrl,
+ .vidioc_s_ctrl = wl1273_fm_vidioc_s_ctrl,
+ .vidioc_g_audio = wl1273_fm_vidioc_g_audio,
+ .vidioc_s_audio = wl1273_fm_vidioc_s_audio,
+ .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner,
+ .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner,
+ .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency,
+ .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency,
+ .vidioc_g_hw_freq_seek = wl1273_fm_vidioc_g_hw_freq_seek,
+ .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,
+ .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator,
+ .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator,
+ .vidioc_log_status = wl1273_fm_vidioc_log_status,
+};
+
+static struct video_device wl1273_viddev_template = {
+ .fops = &wl1273_fops,
+ .ioctl_ops = &wl1273_ioctl_ops,
+ .name = WL1273_FM_DRIVER_NAME,
+ .release = wl1273_vdev_release,
+};
+
+static int wl1273_fm_radio_remove(struct platform_device *pdev)
+{
+ struct wl1273_device *radio = platform_get_drvdata(pdev);;
+
+ dev_info(&pdev->dev, "%s.\n", __func__);
+
+ video_unregister_device(&radio->videodev);
+ v4l2_device_unregister(&radio->v4l2dev);
+ kfree(radio->write_buf);
+ kfree(radio);
+
+ return 0;
+}
+
+static int __devinit wl1273_fm_radio_probe(struct platform_device *pdev)
+{
+ struct wl1273_core **pdata = pdev->dev.platform_data;
+ struct wl1273_device *radio;
+ int r = 0;
+
+ dev_dbg(&pdev->dev, "%s\n", __func__);
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data.\n");
+ return -EINVAL;
+ }
+
+ radio = kzalloc(sizeof(*radio), GFP_KERNEL);
+ if (!radio)
+ return -ENOMEM;
+
+ radio->write_buf = kmalloc(256, GFP_KERNEL);
+ if (!radio->write_buf)
+ return -ENOMEM;
+
+ radio->core = *pdata;
+ radio->dev = &pdev->dev;
+ radio->rds_on = false;
+
+ r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
+ if (r) {
+ dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
+ goto err_device_alloc;
+ }
+
+ /* V4L2 configuration */
+ memcpy(&radio->videodev, &wl1273_viddev_template,
+ sizeof(wl1273_viddev_template));
+
+ radio->videodev.v4l2_dev = &radio->v4l2dev;
+
+ /* register video device */
+ r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
+ if (r) {
+ dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
+ ": Could not register video device\n");
+ goto err_video_register;
+ }
+
+ video_set_drvdata(&radio->videodev, radio);
+ platform_set_drvdata(pdev, radio);
+
+ return 0;
+
+err_video_register:
+ v4l2_device_unregister(&radio->v4l2dev);
+err_device_alloc:
+ kfree(radio);
+
+ return r;
+}
+
+MODULE_ALIAS("platform:wl1273_fm_radio");
+
+static struct platform_driver wl1273_fm_radio_driver = {
+ .probe = wl1273_fm_radio_probe,
+ .remove = __devexit_p(wl1273_fm_radio_remove),
+ .driver = {
+ .name = "wl1273_fm_radio",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init wl1273_fm_module_init(void)
+{
+ pr_info("%s\n", __func__);
+ return platform_driver_register(&wl1273_fm_radio_driver);
+}
+module_init(wl1273_fm_module_init);
+
+static void __exit wl1273_fm_module_exit(void)
+{
+ flush_scheduled_work();
+ platform_driver_unregister(&wl1273_fm_radio_driver);
+ pr_info(DRIVER_DESC ", Exiting.\n");
+}
+module_exit(wl1273_fm_module_exit);
+
+MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@xxxxxxxxx>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
--
1.6.1.3
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