[alsa-devel] [PATCH v19 2/3] V4L2: WL1273 FM Radio: TI WL1273 FM radio driver
Matti J. Aaltonen
matti.j.aaltonen at nokia.com
Tue Feb 15 09:13:45 CET 2011
This module implements V4L2 controls for the Texas Instruments
WL1273 FM Radio and handles the communication with the chip.
Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen at nokia.com>
---
drivers/media/radio/Kconfig | 16 +
drivers/media/radio/Makefile | 1 +
drivers/media/radio/radio-wl1273.c | 2183 ++++++++++++++++++++++++++++++++++++
3 files changed, 2200 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..3c5a473 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -452,4 +452,20 @@ 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
+ select MFD_WL1273_CORE
+ 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..37a7cc7
--- /dev/null
+++ b/drivers/media/radio/radio-wl1273.c
@@ -0,0 +1,2183 @@
+/*
+ * Driver for the Texas Instruments WL1273 FM radio.
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Author: Matti J. Aaltonen <matti.j.aaltonen at nokia.com>
+ *
+ * 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 <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/wl1273-core.h>
+#include <linux/slab.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+
+#define DRIVER_DESC "Wl1273 FM Radio"
+
+#define WL1273_POWER_SET_OFF 0
+#define WL1273_POWER_SET_FM BIT(0)
+#define WL1273_POWER_SET_RDS BIT(1)
+#define WL1273_POWER_SET_RETENTION BIT(4)
+
+#define WL1273_PUPD_SET_OFF 0x00
+#define WL1273_PUPD_SET_ON 0x01
+#define WL1273_PUPD_SET_RETENTION 0x10
+
+#define WL1273_FREQ(x) (x * 10000 / 625)
+#define WL1273_INV_FREQ(x) (x * 625 / 10000)
+
+/*
+ * static int radio_nr - The number of the radio device
+ *
+ * The default is 0.
+ */
+static int radio_nr;
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
+
+struct wl1273_device {
+ char *bus_type;
+
+ u8 forbidden;
+ unsigned int preemphasis;
+ unsigned int spacing;
+ unsigned int tx_power;
+ unsigned int rx_frequency;
+ unsigned int tx_frequency;
+ unsigned int rangelow;
+ unsigned int rangehigh;
+ unsigned int band;
+ bool stereo;
+
+ /* RDS */
+ unsigned int rds_on;
+ struct delayed_work work;
+
+ wait_queue_head_t read_queue;
+ struct mutex lock; /* for serializing fm radio operations */
+ struct completion busy;
+
+ unsigned char *buffer;
+ unsigned int buf_size;
+ unsigned int rd_index;
+ unsigned int wr_index;
+
+ /* Selected interrupts */
+ u16 irq_flags;
+ u16 irq_received;
+
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_device v4l2dev;
+ struct video_device videodev;
+ struct device *dev;
+ struct wl1273_core *core;
+ struct file *owner;
+ char *write_buf;
+ unsigned int rds_users;
+};
+
+#define WL1273_IRQ_MASK (WL1273_FR_EVENT | \
+ WL1273_POW_ENB_EVENT)
+
+/*
+ * static unsigned int rds_buf - the number of RDS buffer blocks used.
+ *
+ * The default number is 100.
+ */
+static unsigned int rds_buf = 100;
+module_param(rds_buf, uint, 0);
+MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
+
+static int wl1273_fm_write_fw(struct wl1273_core *core,
+ __u8 *fw, int len)
+{
+ struct i2c_client *client = core->client;
+ struct i2c_msg msg;
+ int i, r = 0;
+
+ msg.addr = client->addr;
+ msg.flags = 0;
+
+ for (i = 0; i <= len; i++) {
+ msg.len = fw[0];
+ msg.buf = fw + 1;
+
+ fw += msg.len + 1;
+ dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
+
+ r = i2c_transfer(client->adapter, &msg, 1);
+ if (r < 0 && i < len + 1)
+ break;
+ }
+
+ dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
+ dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
+
+ /* Last transfer always fails. */
+ if (i == len || r == 1)
+ r = 0;
+
+ return r;
+}
+
+#define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status)
+#define WL1273_RDS_CORRECTABLE_ERROR (1 << 3)
+#define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4)
+
+static int wl1273_fm_rds(struct wl1273_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+ struct i2c_client *client = core->client;
+ u16 val;
+ u8 b0 = WL1273_RDS_DATA_GET, status;
+ struct v4l2_rds_data rds = { 0, 0, 0 };
+ struct i2c_msg msg[] = {
+ {
+ .addr = client->addr,
+ .flags = 0,
+ .buf = &b0,
+ .len = 1,
+ },
+ {
+ .addr = client->addr,
+ .flags = I2C_M_RD,
+ .buf = (u8 *) &rds,
+ .len = sizeof(rds),
+ }
+ };
+ int r;
+
+ if (core->mode != WL1273_MODE_RX)
+ return 0;
+
+ r = core->read(core, WL1273_RDS_SYNC_GET, &val);
+ if (r)
+ return r;
+
+ if ((val & 0x01) == 0) {
+ /* RDS decoder not synchronized */
+ return -EAGAIN;
+ }
+
+ /* copy all four RDS blocks to internal buffer */
+ do {
+ r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+ if (r != ARRAY_SIZE(msg)) {
+ dev_err(radio->dev, WL1273_FM_DRIVER_NAME
+ ": %s: read_rds error r == %i)\n",
+ __func__, r);
+ }
+
+ status = rds.block;
+
+ if (!WL1273_FIFO_HAS_DATA(status))
+ break;
+
+ /* copy bits 0-2 (the block ID) to bits 3-5 */
+ rds.block = V4L2_RDS_BLOCK_MSK & status;
+ rds.block |= rds.block << 3;
+
+ /* copy the error bits to standard positions */
+ if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
+ rds.block |= V4L2_RDS_BLOCK_ERROR;
+ rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
+ } else if (WL1273_RDS_CORRECTABLE_ERROR & status) {
+ rds.block &= ~V4L2_RDS_BLOCK_ERROR;
+ rds.block |= V4L2_RDS_BLOCK_CORRECTED;
+ }
+
+ /* copy RDS block to internal buffer */
+ memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
+ radio->wr_index += 3;
+
+ /* wrap write pointer */
+ if (radio->wr_index >= radio->buf_size)
+ radio->wr_index = 0;
+
+ /* check for overflow & start over */
+ if (radio->wr_index == radio->rd_index) {
+ dev_dbg(radio->dev, "RDS OVERFLOW");
+
+ radio->rd_index = 0;
+ radio->wr_index = 0;
+ break;
+ }
+ } while (WL1273_FIFO_HAS_DATA(status));
+
+ /* wake up read queue */
+ if (radio->wr_index != radio->rd_index)
+ wake_up_interruptible(&radio->read_queue);
+
+ return 0;
+}
+
+static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
+{
+ struct wl1273_device *radio = dev_id;
+ struct wl1273_core *core = radio->core;
+ u16 flags;
+ int r;
+
+ r = core->read(core, WL1273_FLAG_GET, &flags);
+ if (r)
+ goto out;
+
+ if (flags & WL1273_BL_EVENT) {
+ radio->irq_received = flags;
+ dev_dbg(radio->dev, "IRQ: BL\n");
+ }
+
+ if (flags & WL1273_RDS_EVENT) {
+ msleep(200);
+
+ wl1273_fm_rds(radio);
+ }
+
+ if (flags & WL1273_BBLK_EVENT)
+ dev_dbg(radio->dev, "IRQ: BBLK\n");
+
+ if (flags & WL1273_LSYNC_EVENT)
+ dev_dbg(radio->dev, "IRQ: LSYNC\n");
+
+ if (flags & WL1273_LEV_EVENT) {
+ u16 level;
+
+ r = core->read(core, WL1273_RSSI_LVL_GET, &level);
+ if (r)
+ goto out;
+
+ if (level > 14)
+ dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
+ }
+
+ if (flags & WL1273_IFFR_EVENT)
+ dev_dbg(radio->dev, "IRQ: IFFR\n");
+
+ if (flags & WL1273_PI_EVENT)
+ dev_dbg(radio->dev, "IRQ: PI\n");
+
+ if (flags & WL1273_PD_EVENT)
+ dev_dbg(radio->dev, "IRQ: PD\n");
+
+ if (flags & WL1273_STIC_EVENT)
+ dev_dbg(radio->dev, "IRQ: STIC\n");
+
+ if (flags & WL1273_MAL_EVENT)
+ dev_dbg(radio->dev, "IRQ: MAL\n");
+
+ if (flags & WL1273_POW_ENB_EVENT) {
+ complete(&radio->busy);
+ dev_dbg(radio->dev, "NOT BUSY\n");
+ dev_dbg(radio->dev, "IRQ: POW_ENB\n");
+ }
+
+ if (flags & WL1273_SCAN_OVER_EVENT)
+ dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
+
+ if (flags & WL1273_ERROR_EVENT)
+ dev_dbg(radio->dev, "IRQ: ERROR\n");
+
+ if (flags & WL1273_FR_EVENT) {
+ u16 freq;
+
+ dev_dbg(radio->dev, "IRQ: FR:\n");
+
+ if (core->mode == WL1273_MODE_RX) {
+ r = core->write(core, WL1273_TUNER_MODE_SET,
+ TUNER_MODE_STOP_SEARCH);
+ if (r) {
+ dev_err(radio->dev,
+ "%s: TUNER_MODE_SET fails: %d\n",
+ __func__, r);
+ goto out;
+ }
+
+ r = core->read(core, WL1273_FREQ_SET, &freq);
+ if (r)
+ goto out;
+
+ if (radio->band == WL1273_BAND_JAPAN)
+ radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
+ freq * 50;
+ else
+ radio->rx_frequency = WL1273_BAND_OTHER_LOW +
+ freq * 50;
+ /*
+ * The driver works better with this msleep,
+ * the documentation doesn't mention it.
+ */
+ usleep_range(10000, 15000);
+
+ dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
+
+ } else {
+ r = core->read(core, WL1273_CHANL_SET, &freq);
+ if (r)
+ goto out;
+
+ dev_dbg(radio->dev, "%dkHz\n", freq);
+ }
+ dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
+ }
+
+out:
+ core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
+ complete(&radio->busy);
+
+ return IRQ_HANDLED;
+}
+
+static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
+{
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+
+ if (freq < WL1273_BAND_TX_LOW) {
+ dev_err(radio->dev,
+ "Frequency out of range: %d < %d\n", freq,
+ WL1273_BAND_TX_LOW);
+ return -ERANGE;
+ }
+
+ if (freq > WL1273_BAND_TX_HIGH) {
+ dev_err(radio->dev,
+ "Frequency out of range: %d > %d\n", freq,
+ WL1273_BAND_TX_HIGH);
+ return -ERANGE;
+ }
+
+ /*
+ * The driver works better with this sleep,
+ * the documentation doesn't mention it.
+ */
+ usleep_range(5000, 10000);
+
+ dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
+
+ /* Set the current tx channel */
+ r = core->write(core, WL1273_CHANL_SET, freq / 10);
+ if (r)
+ return r;
+
+ INIT_COMPLETION(radio->busy);
+
+ /* wait for the FR IRQ */
+ r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
+ if (!r)
+ return -ETIMEDOUT;
+
+ dev_dbg(radio->dev, "WL1273_CHANL_SET: %d\n", r);
+
+ /* Enable the output power */
+ r = core->write(core, WL1273_POWER_ENB_SET, 1);
+ if (r)
+ return r;
+
+ INIT_COMPLETION(radio->busy);
+
+ /* wait for the POWER_ENB IRQ */
+ r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
+ if (!r)
+ return -ETIMEDOUT;
+
+ radio->tx_frequency = freq;
+ dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %d\n", r);
+
+ return 0;
+}
+
+static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
+{
+ struct wl1273_core *core = radio->core;
+ int r, f;
+
+ if (freq < radio->rangelow) {
+ dev_err(radio->dev,
+ "Frequency out of range: %d < %d\n", freq,
+ radio->rangelow);
+ r = -ERANGE;
+ goto err;
+ }
+
+ if (freq > radio->rangehigh) {
+ dev_err(radio->dev,
+ "Frequency out of range: %d > %d\n", freq,
+ radio->rangehigh);
+ r = -ERANGE;
+ goto err;
+ }
+
+ dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
+
+ core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
+
+ if (radio->band == WL1273_BAND_JAPAN)
+ f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
+ else
+ f = (freq - WL1273_BAND_OTHER_LOW) / 50;
+
+ r = core->write(core, WL1273_FREQ_SET, f);
+ if (r) {
+ dev_err(radio->dev, "FREQ_SET fails\n");
+ goto err;
+ }
+
+ r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
+ if (r) {
+ dev_err(radio->dev, "TUNER_MODE_SET fails\n");
+ goto err;
+ }
+
+ INIT_COMPLETION(radio->busy);
+
+ r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
+ if (!r) {
+ dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
+ return -ETIMEDOUT;
+ }
+
+ radio->rd_index = 0;
+ radio->wr_index = 0;
+ radio->rx_frequency = freq;
+ return 0;
+err:
+ return r;
+}
+
+static int wl1273_fm_get_freq(struct wl1273_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+ unsigned int freq;
+ u16 f;
+ int r;
+
+ if (core->mode == WL1273_MODE_RX) {
+ r = core->read(core, WL1273_FREQ_SET, &f);
+ if (r)
+ return r;
+
+ dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
+ if (radio->band == WL1273_BAND_JAPAN)
+ freq = WL1273_BAND_JAPAN_LOW + 50 * f;
+ else
+ freq = WL1273_BAND_OTHER_LOW + 50 * f;
+ } else {
+ r = core->read(core, WL1273_CHANL_SET, &f);
+ if (r)
+ return r;
+
+ freq = f * 10;
+ }
+
+ return freq;
+}
+
+/**
+ * wl1273_fm_upload_firmware_patch() - Upload the firmware.
+ * @radio: 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_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+ unsigned int packet_num;
+ const struct firmware *fw_p;
+ const char *fw_name = "radio-wl1273-fw.bin";
+ struct device *dev = radio->dev;
+ __u8 *ptr;
+ int i, n, r;
+
+ dev_dbg(dev, "%s:\n", __func__);
+
+ /*
+ * Uploading the firmware patch is not always necessary,
+ * so we only print an info message.
+ */
+ if (request_firmware(&fw_p, fw_name, dev)) {
+ dev_info(dev, "%s - %s not found\n", __func__, fw_name);
+
+ return 0;
+ }
+
+ ptr = (__u8 *) fw_p->data;
+ packet_num = ptr[0];
+ dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
+
+ r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
+ if (r) {
+ dev_err(dev, "FW upload error: %d\n", r);
+ goto out;
+ }
+
+ /* ignore possible error here */
+ core->write(core, WL1273_RESET, 0);
+
+ dev_dbg(dev, "n: %d, i: %d\n", n, i);
+ dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
+out:
+ release_firmware(fw_p);
+ return r;
+}
+
+static int wl1273_fm_stop(struct wl1273_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+
+ if (core->mode == WL1273_MODE_RX) {
+ int r = core->write(core, WL1273_POWER_SET,
+ WL1273_POWER_SET_OFF);
+ if (r)
+ dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
+ __func__, r);
+ } else if (core->mode == WL1273_MODE_TX) {
+ int r = core->write(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_OFF);
+ if (r)
+ dev_err(radio->dev,
+ "%s: PUPD_SET fails: %d\n", __func__, r);
+ }
+
+ if (core->pdata->disable) {
+ core->pdata->disable();
+ dev_dbg(radio->dev, "Back to reset\n");
+ }
+
+ return 0;
+}
+
+static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
+{
+ struct wl1273_core *core = radio->core;
+ struct wl1273_fm_platform_data *pdata = core->pdata;
+ struct device *dev = radio->dev;
+ int r = -EINVAL;
+
+ if (pdata->enable && core->mode == WL1273_MODE_OFF) {
+ dev_dbg(radio->dev, "Out of reset\n");
+
+ pdata->enable();
+ msleep(250);
+ }
+
+ if (new_mode == WL1273_MODE_RX) {
+ u16 val = WL1273_POWER_SET_FM;
+
+ if (radio->rds_on)
+ val |= WL1273_POWER_SET_RDS;
+
+ /* If this fails try again */
+ r = core->write(core, WL1273_POWER_SET, val);
+ if (r) {
+ msleep(100);
+
+ r = core->write(core, WL1273_POWER_SET, val);
+ if (r) {
+ dev_err(dev, "%s: POWER_SET fails\n", __func__);
+ goto fail;
+ }
+ }
+
+ /* rds buffer configuration */
+ radio->wr_index = 0;
+ radio->rd_index = 0;
+
+ } else if (new_mode == WL1273_MODE_TX) {
+ /* If this fails try again once */
+ r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
+ if (r) {
+ msleep(100);
+ r = core->write(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_ON);
+ if (r) {
+ dev_err(dev, "%s: PUPD_SET fails\n", __func__);
+ goto fail;
+ }
+ }
+
+ if (radio->rds_on)
+ r = core->write(core, WL1273_RDS_DATA_ENB, 1);
+ else
+ r = core->write(core, WL1273_RDS_DATA_ENB, 0);
+ } else {
+ dev_warn(dev, "%s: Illegal mode.\n", __func__);
+ }
+
+ if (core->mode == WL1273_MODE_OFF) {
+ r = wl1273_fm_upload_firmware_patch(radio);
+ if (r)
+ dev_warn(dev, "Firmware upload failed.\n");
+
+ /*
+ * Sometimes the chip is in a wrong power state at this point.
+ * So we set the power once again.
+ */
+ if (new_mode == WL1273_MODE_RX) {
+ u16 val = WL1273_POWER_SET_FM;
+
+ if (radio->rds_on)
+ val |= WL1273_POWER_SET_RDS;
+
+ r = core->write(core, WL1273_POWER_SET, val);
+ if (r) {
+ dev_err(dev, "%s: POWER_SET fails\n", __func__);
+ goto fail;
+ }
+ } else if (new_mode == WL1273_MODE_TX) {
+ r = core->write(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_ON);
+ if (r) {
+ dev_err(dev, "%s: PUPD_SET fails\n", __func__);
+ goto fail;
+ }
+ }
+ }
+
+ return 0;
+fail:
+ if (pdata->disable)
+ pdata->disable();
+
+ dev_dbg(dev, "%s: return: %d\n", __func__, r);
+ return r;
+}
+
+static int wl1273_fm_suspend(struct wl1273_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+
+ /* Cannot go from OFF to SUSPENDED */
+ if (core->mode == WL1273_MODE_RX)
+ r = core->write(core, WL1273_POWER_SET,
+ WL1273_POWER_SET_RETENTION);
+ else if (core->mode == WL1273_MODE_TX)
+ r = core->write(core, WL1273_PUPD_SET,
+ WL1273_PUPD_SET_RETENTION);
+ else
+ r = -EINVAL;
+
+ if (r) {
+ dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
+ goto out;
+ }
+
+out:
+ return r;
+}
+
+static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
+{
+ struct wl1273_core *core = radio->core;
+ struct device *dev = radio->dev;
+ int old_mode;
+ int r;
+
+ dev_dbg(dev, "%s\n", __func__);
+ dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
+
+ old_mode = core->mode;
+ if (mode & radio->forbidden) {
+ r = -EPERM;
+ goto out;
+ }
+
+ switch (mode) {
+ case WL1273_MODE_RX:
+ case WL1273_MODE_TX:
+ r = wl1273_fm_start(radio, mode);
+ if (r) {
+ dev_err(dev, "%s: Cannot start.\n", __func__);
+ wl1273_fm_stop(radio);
+ goto out;
+ }
+
+ core->mode = mode;
+ r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
+ if (r) {
+ dev_err(dev, "INT_MASK_SET fails.\n");
+ goto out;
+ }
+
+ /* remember previous settings */
+ if (mode == WL1273_MODE_RX) {
+ r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
+ if (r) {
+ dev_err(dev, "set freq fails: %d.\n", r);
+ goto out;
+ }
+
+ r = core->set_volume(core, core->volume);
+ if (r) {
+ dev_err(dev, "set volume fails: %d.\n", r);
+ goto out;
+ }
+
+ dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
+ core->volume);
+ } else {
+ r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
+ if (r) {
+ dev_err(dev, "set freq fails: %d.\n", r);
+ goto out;
+ }
+ }
+
+ dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
+
+ r = core->set_audio(core, core->audio_mode);
+ if (r)
+ dev_err(dev, "Cannot set audio mode.\n");
+ break;
+
+ case WL1273_MODE_OFF:
+ r = wl1273_fm_stop(radio);
+ if (r)
+ dev_err(dev, "%s: Off fails: %d\n", __func__, r);
+ else
+ core->mode = WL1273_MODE_OFF;
+
+ break;
+
+ case WL1273_MODE_SUSPENDED:
+ r = wl1273_fm_suspend(radio);
+ if (r)
+ dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
+ else
+ core->mode = WL1273_MODE_SUSPENDED;
+
+ break;
+
+ default:
+ dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
+ r = -EINVAL;
+ break;
+ }
+out:
+ if (r)
+ core->mode = old_mode;
+
+ return r;
+}
+
+static int wl1273_fm_set_seek(struct wl1273_device *radio,
+ unsigned int wrap_around,
+ unsigned int seek_upward,
+ int level)
+{
+ struct wl1273_core *core = radio->core;
+ int r = 0;
+ unsigned int dir = (seek_upward == 0) ? 0 : 1;
+ unsigned int f;
+
+ f = radio->rx_frequency;
+ dev_dbg(radio->dev, "rx_frequency: %d\n", f);
+
+ if (dir && f + radio->spacing <= radio->rangehigh)
+ r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
+ else if (dir && wrap_around)
+ r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
+ else if (f - radio->spacing >= radio->rangelow)
+ r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
+ else if (wrap_around)
+ r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
+
+ if (r)
+ goto out;
+
+ if (level < SCHAR_MIN || level > SCHAR_MAX)
+ return -EINVAL;
+
+ INIT_COMPLETION(radio->busy);
+ dev_dbg(radio->dev, "%s: BUSY\n", __func__);
+
+ r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
+ if (r)
+ goto out;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ r = core->write(core, WL1273_SEARCH_LVL_SET, level);
+ if (r)
+ goto out;
+
+ r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
+ if (r)
+ goto out;
+
+ r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
+ if (r)
+ goto out;
+
+ wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
+ if (!(radio->irq_received & WL1273_BL_EVENT))
+ goto out;
+
+ radio->irq_received &= ~WL1273_BL_EVENT;
+
+ if (!wrap_around)
+ goto out;
+
+ /* Wrap around */
+ dev_dbg(radio->dev, "Wrap around in HW seek.\n");
+
+ if (seek_upward)
+ f = radio->rangelow;
+ else
+ f = radio->rangehigh;
+
+ r = wl1273_fm_set_rx_freq(radio, f);
+ if (r)
+ goto out;
+
+ INIT_COMPLETION(radio->busy);
+ dev_dbg(radio->dev, "%s: BUSY\n", __func__);
+
+ r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
+ if (r)
+ goto out;
+
+ wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
+out:
+ dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
+ return r;
+}
+
+/**
+ * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.
+ * @radio: A pointer to the device struct.
+ */
+static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+ struct device *dev = radio->dev;
+ u16 val;
+ int r;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
+ if (r) {
+ dev_err(dev, "%s: read error: %d\n", __func__, r);
+ goto out;
+ }
+
+out:
+ return val;
+}
+
+/**
+ * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
+ * @radio: 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_device *radio,
+ unsigned int preemphasis)
+{
+ struct wl1273_core *core = radio->core;
+ 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 = core->write(core, WL1273_PREMPH_SET, em);
+ if (r)
+ goto out;
+
+ radio->preemphasis = preemphasis;
+
+out:
+ mutex_unlock(&core->lock);
+ return r;
+}
+
+static int wl1273_fm_rds_on(struct wl1273_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+ int r;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+ if (radio->rds_on)
+ return 0;
+
+ r = core->write(core, WL1273_POWER_SET,
+ WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
+ if (r)
+ dev_err(radio->dev, "set freq fails: %d.\n", r);
+out:
+ return r;
+}
+
+static int wl1273_fm_rds_off(struct wl1273_device *radio)
+{
+ struct wl1273_core *core = radio->core;
+ int r;
+
+ if (!radio->rds_on)
+ return 0;
+
+ radio->irq_flags &= ~WL1273_RDS_EVENT;
+
+ r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
+ if (r)
+ goto out;
+
+ /* stop rds reception */
+ cancel_delayed_work(&radio->work);
+
+ /* Service pending read */
+ wake_up_interruptible(&radio->read_queue);
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
+ if (r)
+ dev_err(radio->dev, "set freq fails: %d.\n", r);
+out:
+ dev_dbg(radio->dev, "%s: exiting...\n", __func__);
+
+ return r;
+}
+
+static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
+{
+ int r = 0;
+ struct wl1273_core *core = radio->core;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ if (new_mode == WL1273_RDS_RESET) {
+ r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
+ return r;
+ }
+
+ if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
+ r = core->write(core, WL1273_RDS_DATA_ENB, 0);
+ } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
+ r = core->write(core, WL1273_RDS_DATA_ENB, 1);
+ } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
+ r = wl1273_fm_rds_off(radio);
+ } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
+ r = wl1273_fm_rds_on(radio);
+ } else {
+ dev_err(radio->dev, "%s: Unknown mode: %d\n",
+ __func__, new_mode);
+ r = -EINVAL;
+ }
+
+ if (!r)
+ radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
+
+ 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));
+ struct wl1273_core *core = radio->core;
+ u16 val;
+ int r;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (core->mode != WL1273_MODE_TX)
+ return count;
+
+ if (radio->rds_users == 0) {
+ 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 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;
+
+ core->write(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", radio->write_buf);
+
+ radio->write_buf[0] = WL1273_RDS_DATA_SET;
+ core->write_data(core, radio->write_buf, val + 1);
+
+ r = val;
+out:
+ mutex_unlock(&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;
+
+ if (radio->owner && radio->owner != file)
+ return -EBUSY;
+
+ radio->owner = file;
+
+ if (core->mode == WL1273_MODE_RX) {
+ poll_wait(file, &radio->read_queue, pts);
+
+ if (radio->rd_index != radio->wr_index)
+ return POLLIN | POLLRDNORM;
+
+ } else if (core->mode == WL1273_MODE_TX) {
+ return POLLOUT | POLLWRNORM;
+ }
+
+ 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 && radio->rds_on &&
+ !radio->rds_users) {
+ dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ radio->irq_flags |= WL1273_RDS_EVENT;
+
+ r = core->write(core, WL1273_INT_MASK_SET,
+ radio->irq_flags);
+ if (r) {
+ mutex_unlock(&core->lock);
+ goto out;
+ }
+
+ radio->rds_users++;
+
+ 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_users > 0) {
+ radio->rds_users--;
+ if (radio->rds_users == 0) {
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ radio->irq_flags &= ~WL1273_RDS_EVENT;
+
+ if (core->mode == WL1273_MODE_RX) {
+ r = core->write(core,
+ WL1273_INT_MASK_SET,
+ radio->irq_flags);
+ if (r) {
+ mutex_unlock(&core->lock);
+ goto out;
+ }
+ }
+ 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;
+ u16 val;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (core->mode != WL1273_MODE_RX)
+ return 0;
+
+ if (radio->rds_users == 0) {
+ 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 at a time gets read access.
+ */
+ if (radio->owner && radio->owner != file) {
+ r = -EBUSY;
+ goto out;
+ }
+ radio->owner = file;
+
+ r = core->read(core, WL1273_RDS_SYNC_GET, &val);
+ if (r) {
+ dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
+ goto out;
+ } else if (val == 0) {
+ dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
+ r = -ENODATA;
+ goto out;
+ }
+
+ /* block if no new data available */
+ while (radio->wr_index == radio->rd_index) {
+ if (file->f_flags & O_NONBLOCK) {
+ r = -EWOULDBLOCK;
+ goto out;
+ }
+
+ dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
+ if (wait_event_interruptible(radio->read_queue,
+ radio->wr_index !=
+ radio->rd_index) < 0) {
+ r = -EINTR;
+ goto out;
+ }
+ }
+
+ /* calculate block count from byte count */
+ count /= RDS_BLOCK_SIZE;
+
+ /* copy RDS blocks from the internal buffer and to user buffer */
+ while (block_count < count) {
+ if (radio->rd_index == radio->wr_index)
+ break;
+
+ /* always transfer complete RDS blocks */
+ if (copy_to_user(buf, &radio->buffer[radio->rd_index],
+ RDS_BLOCK_SIZE))
+ break;
+
+ /* increment and wrap the read pointer */
+ radio->rd_index += RDS_BLOCK_SIZE;
+ if (radio->rd_index >= radio->buf_size)
+ radio->rd_index = 0;
+
+ /* increment counters */
+ block_count++;
+ buf += RDS_BLOCK_SIZE;
+ r += RDS_BLOCK_SIZE;
+ }
+
+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, radio->bus_type,
+ 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;
+}
+
+/**
+ * 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_device *radio, u16 power)
+{
+ struct wl1273_core *core = radio->core;
+ int r;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ mutex_lock(&core->lock);
+
+ /* Convert the dBuV value to chip presentation */
+ r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
+ if (r)
+ goto out;
+
+ radio->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_device *radio,
+ unsigned int spacing)
+{
+ struct wl1273_core *core = radio->core;
+ int r;
+
+ if (spacing == 0) {
+ r = core->write(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_100kHz);
+ radio->spacing = 100;
+ } else if (spacing - 50000 < 25000) {
+ r = core->write(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_50kHz);
+ radio->spacing = 50;
+ } else if (spacing - 100000 < 50000) {
+ r = core->write(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_100kHz);
+ radio->spacing = 100;
+ } else {
+ r = core->write(core, WL1273_SCAN_SPACING_SET,
+ WL1273_SPACING_200kHz);
+ radio->spacing = 200;
+ }
+
+ return r;
+}
+
+static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct wl1273_device *radio = ctrl->priv;
+ struct wl1273_core *core = radio->core;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ switch (ctrl->id) {
+ case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+ ctrl->val = wl1273_fm_get_tx_ctune(radio);
+ break;
+
+ default:
+ dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
+ __func__, ctrl->id);
+ break;
+ }
+
+ mutex_unlock(&core->lock);
+
+ return 0;
+}
+
+#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 inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
+{
+ return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
+}
+
+static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct wl1273_device *radio = to_radio(ctrl);
+ 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->val)
+ r = core->write(core,
+ WL1273_MUTE_STATUS_SET,
+ WL1273_MUTE_HARD_LEFT |
+ WL1273_MUTE_HARD_RIGHT);
+ else if (core->mode == WL1273_MODE_RX)
+ r = core->write(core,
+ WL1273_MUTE_STATUS_SET, 0x0);
+ else if (core->mode == WL1273_MODE_TX && ctrl->val)
+ r = core->write(core, WL1273_MUTE, 1);
+ else if (core->mode == WL1273_MODE_TX)
+ r = core->write(core, WL1273_MUTE, 0);
+
+ mutex_unlock(&core->lock);
+ break;
+
+ case V4L2_CID_AUDIO_VOLUME:
+ if (ctrl->val == 0)
+ r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
+ else
+ r = core->set_volume(core, core->volume);
+ break;
+
+ case V4L2_CID_TUNE_PREEMPHASIS:
+ r = wl1273_fm_set_preemphasis(radio, ctrl->val);
+ break;
+
+ case V4L2_CID_TUNE_POWER_LEVEL:
+ r = wl1273_fm_set_tx_power(radio, ctrl->val);
+ 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;
+
+ strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
+ tuner->type = V4L2_TUNER_RADIO;
+
+ tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
+ tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
+
+ tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
+ V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
+
+ if (radio->stereo)
+ tuner->audmode = V4L2_TUNER_MODE_STEREO;
+ else
+ tuner->audmode = V4L2_TUNER_MODE_MONO;
+
+ if (core->mode != WL1273_MODE_RX)
+ return 0;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = core->read(core, WL1273_STEREO_GET, &val);
+ if (r)
+ goto out;
+
+ if (val == 1)
+ tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
+ else
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
+
+ r = core->read(core, WL1273_RSSI_LVL_GET, &val);
+ if (r)
+ goto out;
+
+ tuner->signal = (s16) val;
+ dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
+
+ tuner->afc = 0;
+
+ r = core->read(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__);
+ dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
+ dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
+ dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
+ dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
+ dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
+ dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
+
+ if (tuner->index > 0)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
+ if (r)
+ goto out;
+
+ if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
+ r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
+ else
+ r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
+
+ if (r)
+ dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
+
+ if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
+ r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
+ if (r < 0) {
+ dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
+ __func__, r);
+ goto out;
+ }
+ radio->stereo = false;
+ } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
+ r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
+ if (r < 0) {
+ dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
+ __func__, r);
+ goto out;
+ }
+ radio->stereo = true;
+ } else {
+ dev_err(radio->dev, "%s: tuner->audmode: %d\n",
+ __func__, tuner->audmode);
+ r = -EINVAL;
+ goto out;
+ }
+
+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_FREQ(wl1273_fm_get_freq(radio));
+
+ 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;
+
+ if (core->mode == WL1273_MODE_RX) {
+ dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
+
+ r = wl1273_fm_set_rx_freq(radio,
+ WL1273_INV_FREQ(freq->frequency));
+ if (r)
+ dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
+ ": set frequency failed with %d\n", r);
+ } else {
+ r = wl1273_fm_set_tx_freq(radio,
+ WL1273_INV_FREQ(freq->frequency));
+ 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;
+}
+
+#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(radio, WL1273_MODE_RX);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
+ if (r)
+ dev_warn(radio->dev, "HW seek failed: %d\n", r);
+
+ r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
+ WL1273_DEFAULT_SEEK_LEVEL);
+ if (r)
+ dev_warn(radio->dev, "HW seek failed: %d\n", r);
+
+out:
+ mutex_unlock(&core->lock);
+ 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(radio, WL1273_MODE_TX);
+ if (r)
+ goto out;
+
+ if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
+ r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
+ else
+ r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
+
+ if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
+ r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
+ else
+ r = core->write(core, WL1273_MONO_SET,
+ WL1273_RX_STEREO);
+ if (r < 0)
+ dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
+ "MONO_SET fails: %d\n", r);
+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;
+ u16 val;
+ int r;
+
+ dev_dbg(radio->dev, "%s\n", __func__);
+
+ strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
+ sizeof(modulator->name));
+
+ modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
+ modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
+
+ modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
+ V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
+
+ if (core->mode != WL1273_MODE_TX)
+ return 0;
+
+ if (mutex_lock_interruptible(&core->lock))
+ return -EINTR;
+
+ r = core->read(core, WL1273_MONO_SET, &val);
+ if (r)
+ goto out;
+
+ if (val == WL1273_TX_STEREO)
+ modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
+ else
+ modulator->txsubchans = V4L2_TUNER_SUB_MONO;
+
+ if (radio->rds_on)
+ modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
+out:
+ 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;
+ struct device *dev = radio->dev;
+ u16 val;
+ int r;
+
+ dev_info(dev, DRIVER_DESC);
+
+ if (core->mode == WL1273_MODE_OFF) {
+ dev_info(dev, "Mode: Off\n");
+ return 0;
+ }
+
+ if (core->mode == WL1273_MODE_SUSPENDED) {
+ dev_info(dev, "Mode: Suspended\n");
+ return 0;
+ }
+
+ r = core->read(core, WL1273_ASIC_ID_GET, &val);
+ if (r)
+ dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
+ else
+ dev_info(dev, "ASIC_ID: 0x%04x\n", val);
+
+ r = core->read(core, WL1273_ASIC_VER_GET, &val);
+ if (r)
+ dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
+ else
+ dev_info(dev, "ASIC Version: 0x%04x\n", val);
+
+ r = core->read(core, WL1273_FIRM_VER_GET, &val);
+ if (r)
+ dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
+ else
+ dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
+
+ r = core->read(core, WL1273_BAND_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get BAND fails.\n", __func__);
+ else
+ dev_info(dev, "BAND: %d\n", val);
+
+ if (core->mode == WL1273_MODE_TX) {
+ r = core->read(core, WL1273_PUPD_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get PUPD fails.\n", __func__);
+ else
+ dev_info(dev, "PUPD: 0x%04x\n", val);
+
+ r = core->read(core, WL1273_CHANL_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get CHANL fails.\n", __func__);
+ else
+ dev_info(dev, "Tx frequency: %dkHz\n", val*10);
+ } else if (core->mode == WL1273_MODE_RX) {
+ int bf = radio->rangelow;
+
+ r = core->read(core, WL1273_FREQ_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get FREQ fails.\n", __func__);
+ else
+ dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
+
+ r = core->read(core, WL1273_MOST_MODE_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get MOST_MODE fails.\n",
+ __func__);
+ else if (val == 0)
+ dev_info(dev, "MOST_MODE: Stereo according to blend\n");
+ else if (val == 1)
+ dev_info(dev, "MOST_MODE: Force mono output\n");
+ else
+ dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
+
+ r = core->read(core, WL1273_MOST_BLEND_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
+ else if (val == 0)
+ dev_info(dev,
+ "MOST_BLEND: Switched blend & hysteresis.\n");
+ else if (val == 1)
+ dev_info(dev, "MOST_BLEND: Soft blend.\n");
+ else
+ dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
+
+ r = core->read(core, WL1273_STEREO_GET, &val);
+ if (r)
+ dev_err(dev, "%s: Get STEREO fails.\n", __func__);
+ else if (val == 0)
+ dev_info(dev, "STEREO: Not detected\n");
+ else if (val == 1)
+ dev_info(dev, "STEREO: Detected\n");
+ else
+ dev_info(dev, "STEREO: Unexpected value: %d\n", val);
+
+ r = core->read(core, WL1273_RSSI_LVL_GET, &val);
+ if (r)
+ dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
+ else
+ dev_info(dev, "RX signal strength: %d\n", (s16) val);
+
+ r = core->read(core, WL1273_POWER_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get POWER fails.\n", __func__);
+ else
+ dev_info(dev, "POWER: 0x%04x\n", val);
+
+ r = core->read(core, WL1273_INT_MASK_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
+ else
+ dev_info(dev, "INT_MASK: 0x%04x\n", val);
+
+ r = core->read(core, WL1273_RDS_SYNC_GET, &val);
+ if (r)
+ dev_err(dev, "%s: Get RDS_SYNC fails.\n",
+ __func__);
+ else if (val == 0)
+ dev_info(dev, "RDS_SYNC: Not synchronized\n");
+
+ else if (val == 1)
+ dev_info(dev, "RDS_SYNC: Synchronized\n");
+ else
+ dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
+
+ r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
+ __func__);
+ else
+ dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
+
+ r = core->read(core, WL1273_VOLUME_SET, &val);
+ if (r)
+ dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
+ else
+ dev_info(dev, "VOLUME: 0x%04x\n", val);
+ }
+
+ return 0;
+}
+
+static void wl1273_vdev_release(struct video_device *dev)
+{
+}
+
+static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
+ .s_ctrl = wl1273_fm_vidioc_s_ctrl,
+ .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
+};
+
+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_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,
+ .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);
+ struct wl1273_core *core = radio->core;
+
+ dev_info(&pdev->dev, "%s.\n", __func__);
+
+ free_irq(core->client->irq, radio);
+ core->pdata->free_resources();
+
+ v4l2_ctrl_handler_free(&radio->ctrl_handler);
+ video_unregister_device(&radio->videodev);
+ v4l2_device_unregister(&radio->v4l2dev);
+ kfree(radio->buffer);
+ kfree(radio->write_buf);
+ kfree(radio);
+
+ return 0;
+}
+
+static int __devinit wl1273_fm_radio_probe(struct platform_device *pdev)
+{
+ struct wl1273_core **core = pdev->dev.platform_data;
+ struct wl1273_device *radio;
+ struct v4l2_ctrl *ctrl;
+ int r = 0;
+
+ pr_debug("%s\n", __func__);
+
+ if (!core) {
+ dev_err(&pdev->dev, "No platform data.\n");
+ r = -EINVAL;
+ goto pdata_err;
+ }
+
+ radio = kzalloc(sizeof(*radio), GFP_KERNEL);
+ if (!radio) {
+ r = -ENOMEM;
+ goto pdata_err;
+ }
+
+ /* RDS buffer allocation */
+ radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
+ radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
+ if (!radio->buffer) {
+ pr_err("Cannot allocate memory for RDS buffer.\n");
+ r = -ENOMEM;
+ goto err_kmalloc;
+ }
+
+ radio->core = *core;
+ radio->irq_flags = WL1273_IRQ_MASK;
+ radio->dev = &radio->core->client->dev;
+ radio->rds_on = false;
+ radio->core->mode = WL1273_MODE_OFF;
+ radio->tx_power = 118;
+ radio->core->audio_mode = WL1273_AUDIO_ANALOG;
+ radio->band = WL1273_BAND_OTHER;
+ radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
+ radio->core->channel_number = 2;
+ radio->core->volume = WL1273_DEFAULT_VOLUME;
+ radio->rx_frequency = WL1273_BAND_OTHER_LOW;
+ radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
+ radio->rangelow = WL1273_BAND_OTHER_LOW;
+ radio->rangehigh = WL1273_BAND_OTHER_HIGH;
+ radio->stereo = true;
+ radio->bus_type = "I2C";
+
+ if (radio->core->pdata->request_resources) {
+ r = radio->core->pdata->request_resources(radio->core->client);
+ if (r) {
+ dev_err(radio->dev, WL1273_FM_DRIVER_NAME
+ ": Cannot get platform data\n");
+ goto err_resources;
+ }
+
+ dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
+
+ r = request_threaded_irq(radio->core->client->irq, NULL,
+ wl1273_fm_irq_thread_handler,
+ IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
+ "wl1273-fm", radio);
+ if (r < 0) {
+ dev_err(radio->dev, WL1273_FM_DRIVER_NAME
+ ": Unable to register IRQ handler: %d\n", r);
+ goto err_request_irq;
+ }
+ } else {
+ dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
+ " not configured");
+ r = -EINVAL;
+ goto err_resources;
+ }
+
+ init_completion(&radio->busy);
+ init_waitqueue_head(&radio->read_queue);
+
+ radio->write_buf = kmalloc(256, GFP_KERNEL);
+ if (!radio->write_buf) {
+ r = -ENOMEM;
+ goto write_buf_err;
+ }
+
+ radio->dev = &pdev->dev;
+ radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
+ radio->rds_users = 0;
+
+ r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
+ if (r) {
+ dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
+ goto device_register_err;
+ }
+
+ /* V4L2 configuration */
+ memcpy(&radio->videodev, &wl1273_viddev_template,
+ sizeof(wl1273_viddev_template));
+
+ radio->videodev.v4l2_dev = &radio->v4l2dev;
+
+ v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
+
+ /* add in ascending ID order */
+ v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
+ V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
+ WL1273_DEFAULT_VOLUME);
+
+ v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+
+ v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
+ V4L2_CID_TUNE_PREEMPHASIS,
+ V4L2_PREEMPHASIS_75_uS, 0x03,
+ V4L2_PREEMPHASIS_50_uS);
+
+ v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
+ V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
+
+ ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
+ V4L2_CID_TUNE_ANTENNA_CAPACITOR,
+ 0, 255, 1, 255);
+ if (ctrl)
+ ctrl->is_volatile = 1;
+
+ if (radio->ctrl_handler.error) {
+ r = radio->ctrl_handler.error;
+ dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
+ goto handler_init_err;
+ }
+
+ video_set_drvdata(&radio->videodev, radio);
+ platform_set_drvdata(pdev, radio);
+
+ /* 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 handler_init_err;
+ }
+
+ return 0;
+
+handler_init_err:
+ v4l2_ctrl_handler_free(&radio->ctrl_handler);
+ v4l2_device_unregister(&radio->v4l2dev);
+device_register_err:
+ kfree(radio->write_buf);
+write_buf_err:
+ free_irq(radio->core->client->irq, radio);
+err_request_irq:
+ radio->core->pdata->free_resources();
+err_resources:
+ kfree(radio->buffer);
+err_kmalloc:
+ kfree(radio);
+pdata_err:
+ 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 at nokia.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
--
1.6.1.3
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