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 | 1960 ++++++++++++++++++++++++++++++++++++ drivers/mfd/Kconfig | 6 + drivers/mfd/Makefile | 2 + 5 files changed, 1984 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..737c682 --- /dev/null +++ b/drivers/media/radio/radio-wl1273.c @@ -0,0 +1,1960 @@ +/* + * 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 <linux/delay.h> +#include <linux/firmware.h> +#include <linux/mfd/wl1273-core.h> +#include <linux/slab.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(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 = -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(2000)); + 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) { + dev_err(&core->i2c_dev->dev, "FREQ_SET fails\n"); + goto err; + } + + INIT_COMPLETION(core->busy); + r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET); + if (r) { + dev_err(&core->i2c_dev->dev, "TUNER_MODE_SET fails\n"); + complete(&core->busy); + goto err; + } + + r = wait_for_completion_timeout(&core->busy, msecs_to_jiffies(2000)); + if (!r) { + dev_err(&core->i2c_dev->dev, "TIMEOUT\n"); + 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 device *dev = &core->i2c_dev->dev; + __u8 *ptr; + int i, n, len, r; + struct i2c_msg *msgs; + + dev_dbg(dev, "%s:\n", __func__); + + 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); + + 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(dev, "%s: len[%d]: %d\n", __func__, n, len); + + if (i + len + 1 <= fw_p->size) { + msgs[n].addr = core->i2c_dev->addr; + msgs[n].flags = 0; + msgs[n].len = len; + msgs[n].buf = ptr + i + 1; + } else { + break; + } + + i += len + 1; + } + + r = i2c_transfer(core->i2c_dev->adapter, msgs, packet_num); + kfree(msgs); + + if (r != packet_num) { + dev_err(dev, "FW upload error: %d\n", r); + dev_dbg(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(dev, "n: %d, i: %d\n", n, i); + + if (n - 1 != packet_num) + dev_warn(dev, "%s - incorrect firmware size.\n", __func__); + + if (i != fw_p->size) + dev_warn(dev, "%s - inconsistent firmware.\n", __func__); + + 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_core *core) +{ + struct wl1273_fm_platform_data *pdata = + core->i2c_dev->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 wl1273_fm_platform_data *pdata = + core->i2c_dev->dev.platform_data; + struct device *dev = &core->i2c_dev->dev; + int r = -EINVAL; + + if (pdata->enable && core->mode == WL1273_MODE_OFF) { + dev_dbg(dev, "Out of reset\n"); + + 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(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(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(dev, "%s: Illegal mode.\n", __func__); + } + + if (core->mode == WL1273_MODE_OFF) { + r = wl1273_fm_upload_firmware_patch(core); + 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 (core->rds_on) + val |= WL1273_POWER_SET_RDS; + + r = wl1273_fm_write_cmd(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 = wl1273_fm_write_cmd(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_core *core) +{ + int r = 0; + struct device *dev = &core->i2c_dev->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(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; + struct device *dev = &core->i2c_dev->dev; + + dev_dbg(dev, "%s\n", __func__); + dev_dbg(dev, "Forbidden modes: 0x%02x\n", core->forbidden); + + old_mode = core->mode; + if (mode & core->forbidden) { + r = -EPERM; + goto out; + } + + switch (mode) { + case WL1273_MODE_RX: + case WL1273_MODE_TX: + r = wl1273_fm_start(core, mode); + if (r) { + dev_err(dev, "%s: Cannot start.\n", __func__); + wl1273_fm_stop(core); + goto out; + } + + core->mode = mode; + r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, + core->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(core, core->rx_frequency); + if (r) { + dev_err(dev, "set freq fails: %d.\n", r); + goto out; + } + + r = wl1273_fm_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(core, core->tx_frequency); + if (r) { + dev_err(dev, "set freq fails: %d.\n", r); + goto out; + } + } + + dev_dbg(dev, "%s: Set audio mode.\n", __func__); + + r = wl1273_fm_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(core); + 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(core); + 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_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_dbg(&core->i2c_dev->dev, "%s: Number of bands: %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 device *dev = &core->i2c_dev->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(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__); + if (core->rds_on) + return 0; + + 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; + + if (!core->rds_on) + return 0; + + 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); + 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: + 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 device *dev = &core->i2c_dev->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; + } + + 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(dev, "%s: Unknown mode: %d\n", __func__, new_mode); + r = -EINVAL; + } + + if (!r) + core->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)); + 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", radio->write_buf); + + 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; + + if (radio->owner && radio->owner != file) + return -EBUSY; + + radio->owner = file; + + if (core->mode == WL1273_MODE_RX) { + poll_wait(file, &core->read_queue, pts); + + if (core->rd_index != core->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 && 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; + + if (core->mode == WL1273_MODE_RX) { + dev_dbg(radio->dev, "%s: A'\n", __func__); + 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; + u16 val; + + 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; + + r = wl1273_fm_read_reg(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 (core->wr_index == core->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(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_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_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 V4L2_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: + if (ctrl->value == 0) + r = wl1273_fm_set_mode(core, WL1273_MODE_OFF); + else + r = wl1273_fm_set_volume(core, core->volume); + 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 V4L2_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; + + strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name)); + tuner->type = V4L2_TUNER_RADIO; + + tuner->rangelow = + WL1273_FREQ(core->bands[core->band].bottom_frequency); + tuner->rangehigh = + WL1273_FREQ(core->bands[core->band].top_frequency); + + tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | + V4L2_TUNER_CAP_STEREO; + + if (core->mode != WL1273_MODE_RX) + return 0; + + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + r = wl1273_fm_read_reg(core, WL1273_MOST_MODE_SET, &val); + if (r) + goto out; + + if (val == WL1273_RX_MONO) { + tuner->rxsubchans = V4L2_TUNER_SUB_MONO; + tuner->audmode = V4L2_TUNER_MODE_MONO; + } else { + tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; + tuner->audmode = V4L2_TUNER_MODE_STEREO; + } + + r = wl1273_fm_read_reg(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 = 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__); + 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(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 + "MOST_MODE_SET fails: %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_FREQ(wl1273_fm_get_freq(core)); + + 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(core, + 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(core, + 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(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); + + 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(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); + + if (modulator->txsubchans & V4L2_TUNER_SUB_MONO) + r = wl1273_fm_write_cmd(core, WL1273_MONO_SET, WL1273_TX_MONO); + else + r = wl1273_fm_write_cmd(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(core->bands[core->band].bottom_frequency); + modulator->rangehigh = + WL1273_FREQ(core->bands[core->band].top_frequency); + + modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | + V4L2_TUNER_CAP_STEREO; + + if (core->mode != WL1273_MODE_TX) + return 0; + + if (mutex_lock_interruptible(&core->lock)) + return -EINTR; + + r = wl1273_fm_read_reg(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 (core->rds_on) + modulator->txsubchans |= V4L2_TUNER_SUB_RDS; + else + 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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = core->bands[core->band].bottom_frequency; + + r = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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 = wl1273_fm_read_reg(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_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_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"); diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 9da0e50..e086210 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -188,6 +188,12 @@ config MFD_TC35892 additional drivers must be enabled in order to use the functionality of the device. +config WL1273_CORE + tristate + depends on I2C + select MFD_CORE + default n + config MFD_TMIO bool default n diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index fb503e7..c236366 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -37,6 +37,8 @@ obj-$(CONFIG_TWL4030_CORE) += twl-core.o twl4030-irq.o twl6030-irq.o obj-$(CONFIG_TWL4030_POWER) += twl4030-power.o obj-$(CONFIG_TWL4030_CODEC) += twl4030-codec.o +obj-$(CONFIG_WL1273_CORE) += wl1273-core.o + obj-$(CONFIG_MFD_MC13783) += mc13783-core.o obj-$(CONFIG_MFD_CORE) += mfd-core.o -- 1.6.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html