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 | 805 ++++++++++++++++++++++++++++++++++++
3 files changed, 821 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..07f6787
--- /dev/null
+++ b/drivers/media/radio/radio-wl1273.c
@@ -0,0 +1,805 @@
+/*
+ * 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/mfd/wl1273-core.h>
+#include <linux/platform_device.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+
+#define DRIVER_DESC "Wl1273 FM Radio - V4L2"
+
+/*
+ * 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 video_device *videodev;
+ struct device *dev;
+ struct wl1273_core *core;
+ bool rds_on;
+};
+
+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_RX)
+ return count;
+
+ if (mutex_lock_interruptible(&radio->core->lock))
+ return -EINTR;
+
+ /* Manual Mode */
+ if (count > 255)
+ val = 255;
+ else
+ val = count;
+
+ wl1273_fm_write_cmd(radio->core, WL1273_RDS_CONFIG_DATA_SET, val);
+
+ s = kmalloc(val + 1, GFP_KERNEL);
+ if (!s) {
+ r = -ENOMEM;
+ goto out;
+ }
+
+ if (copy_from_user(s + 1, buf, val)) {
+ kfree(s);
+ r = -EFAULT;
+ goto out;
+ }
+
+ dev_dbg(radio->dev, "Count: %d\n", val);
+ dev_dbg(radio->dev, "From user: \"%s\"\n", s);
+
+ s[0] = WL1273_RDS_DATA_SET;
+ wl1273_fm_write_data(radio->core, s, val + 1);
+
+ kfree(s);
+ 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 (!radio->rds_on) {
+ if (mutex_lock_interruptible(&core->lock)) {
+ r = -EINTR;
+ goto out;
+ }
+
+ r = wl1273_fm_rds_on(core);
+ 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;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (radio->rds_on) {
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ wl1273_fm_rds_off(core);
+ radio->rds_on = false;
+ mutex_unlock(&core->lock);
+ }
+
+ return 0;
+}
+
+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;
+
+ /* TODO: handle the case of multiple readers */
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (radio->core->mode == WL1273_MODE_TX)
+ return 0;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ /* 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 struct v4l2_queryctrl wl1273_v4l2_queryctrl[] = {
+ /* the disabled controls are only here
+ to satisfy kradio and such apps */
+ {
+ .id = V4L2_CID_AUDIO_VOLUME,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Volume",
+ .minimum = 0,
+ .maximum = 15,
+ .step = 1,
+ .default_value = 15,
+ },
+ {
+ .id = V4L2_CID_AUDIO_BALANCE,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+ {
+ .id = V4L2_CID_AUDIO_BASS,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+ {
+ .id = V4L2_CID_AUDIO_TREBLE,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+ {
+ .id = V4L2_CID_AUDIO_MUTE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Mute",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ },
+ {
+ .id = V4L2_CID_AUDIO_LOUDNESS,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+};
+
+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));
+ sprintf(capability->bus_info, "I2C");
+ capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |
+ V4L2_CAP_RADIO | V4L2_CAP_READWRITE | V4L2_CAP_AUDIO;
+
+ 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)
+{
+ unsigned char i;
+ int r = -EINVAL;
+ struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ for (i = 0; i < ARRAY_SIZE(wl1273_v4l2_queryctrl); i++) {
+ if (qc->id && qc->id == wl1273_v4l2_queryctrl[i].id) {
+ memcpy(qc, &wl1273_v4l2_queryctrl[i], sizeof(*qc));
+ r = 0;
+ break;
+ }
+ }
+ if (r < 0)
+ dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
+ ": query control failed with %d\n", r);
+ 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 WL1273_CID_FM_RADIO_MODE:
+ ctrl->value = wl1273_fm_get_mode(core);
+ break;
+
+ case WL1273_CID_FM_AUDIO_MODE:
+ ctrl->value = wl1273_fm_get_audio(core);
+ break;
+
+ case WL1273_CID_FM_REGION:
+ ctrl->value = wl1273_fm_get_region(core);
+ break;
+
+ case WL1273_CID_FM_CHAN_SPACING:
+ ctrl->value = wl1273_fm_tx_get_spacing(core);
+ break;
+
+ case WL1273_CID_FM_RDS_CTRL:
+ ctrl->value = wl1273_fm_get_tx_rds(core);
+ break;
+
+ case WL1273_CID_FM_CTUNE_VAL:
+ ctrl->value = wl1273_fm_get_tx_ctune(core);
+ break;
+
+ case WL1273_CID_TUNE_PREEMPHASIS:
+ ctrl->value = wl1273_fm_get_preemphasis(core);
+ break;
+
+ case WL1273_CID_TX_POWER:
+ ctrl->value = wl1273_fm_get_tx_power(core);
+ break;
+
+ case WL1273_CID_SEARCH_LVL:
+ ctrl->value = wl1273_fm_get_search_level(core);
+ 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 WL1273_CID_FM_RADIO_MODE:
+ dev_dbg(radio->dev, "WL1273_CID_FM_RADIO_MODE\n");
+ r = wl1273_fm_set_mode(core, ctrl->value);
+ break;
+
+ case WL1273_CID_FM_AUDIO_MODE:
+ r = wl1273_fm_set_audio(core, ctrl->value);
+ break;
+
+ case WL1273_CID_FM_REGION:
+ r = wl1273_fm_set_region(core, ctrl->value);
+ break;
+
+ case WL1273_CID_FM_CHAN_SPACING:
+ r = wl1273_fm_tx_set_spacing(core, ctrl->value);
+ break;
+
+ case WL1273_CID_FM_RDS_CTRL:
+ r = wl1273_fm_set_tx_rds(core, ctrl->value);
+ break;
+
+ case WL1273_CID_TUNE_PREEMPHASIS:
+ r = wl1273_fm_set_preemphasis(core, ctrl->value);
+ break;
+
+ case WL1273_CID_TX_POWER:
+ r = wl1273_fm_set_tx_power(core, ctrl->value);
+ break;
+
+ case WL1273_CID_SEARCH_LVL:
+ r = wl1273_fm_set_search_level(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;
+
+ strcpy(audio->name, "Radio");
+ 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;
+}
+
+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;
+
+ 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->regions[core->region].bottom_frequency * 10000 / 625;
+ tuner->rangehigh =
+ core->regions[core->region].top_frequency * 10000 / 625;
+
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ tuner->capability = V4L2_TUNER_CAP_LOW;
+
+ if (core->mode == WL1273_MODE_RX) {
+ u16 val;
+ int r;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = wl1273_fm_read_reg(core, WL1273_RSSI_LVL_GET, &val);
+
+ mutex_unlock(&core->lock);
+ if (r)
+ return r;
+
+ tuner->signal = val;
+
+ dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
+
+ tuner->signal *= 256;
+ tuner->afc = 0;
+ }
+
+ return 0;
+}
+
+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;
+
+ 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);
+
+ 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) * 10000 / 625;
+
+ 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 * 625 / 10000);
+ 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 * 625 / 10000);
+ 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_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 (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;
+
+ r = wl1273_fm_set_seek(core, seek->wrap_around, seek->seek_upward);
+ if (r)
+ dev_warn(radio->dev, "HW seek failed: %d\n", r);
+
+ mutex_unlock(&core->lock);
+
+ return r;
+}
+
+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_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_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,
+};
+
+static struct video_device wl1273_viddev_template = {
+ .fops = &wl1273_fops,
+ .ioctl_ops = &wl1273_ioctl_ops,
+ .name = WL1273_FM_DRIVER_NAME,
+ .release = video_device_release,
+};
+
+static int wl1273_fm_radio_remove(struct platform_device *pdev)
+{
+ dev_info(&pdev->dev, "%s.\n", __func__);
+
+ 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->core = *pdata;
+ radio->dev = &pdev->dev;
+ radio->rds_on = false;
+
+ /* video device allocation */
+ radio->videodev = video_device_alloc();
+ if (!radio->videodev) {
+ dev_err(&pdev->dev, "Cannot allocate video device.\n");
+ r = -ENOMEM;
+ goto err_device_alloc;
+ }
+
+ /* V4L2 configuration */
+ memcpy(radio->videodev, &wl1273_viddev_template,
+ sizeof(wl1273_viddev_template));
+
+ /* 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:
+ video_device_release(radio->videodev);
+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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