| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Matti J. Aaltonen | 9921 | 98.16% | 3 | 9.68% |
| Hans Verkuil | 46 | 0.46% | 10 | 32.26% |
| Gustavo A. R. Silva | 40 | 0.40% | 1 | 3.23% |
| Nicholas Mc Guire | 35 | 0.35% | 2 | 6.45% |
| Julia Lawall | 22 | 0.22% | 1 | 3.23% |
| Wolfram Sang | 10 | 0.10% | 1 | 3.23% |
| Mauro Carvalho Chehab | 9 | 0.09% | 4 | 12.90% |
| Axel Lin | 6 | 0.06% | 1 | 3.23% |
| Samuel Ortiz | 4 | 0.04% | 1 | 3.23% |
| Linus Torvalds | 4 | 0.04% | 1 | 3.23% |
| Paul Gortmaker | 3 | 0.03% | 1 | 3.23% |
| Thomas Gleixner | 2 | 0.02% | 1 | 3.23% |
| Johan Hovold | 2 | 0.02% | 1 | 3.23% |
| Bhumika Goyal | 1 | 0.01% | 1 | 3.23% |
| Ezequiel García | 1 | 0.01% | 1 | 3.23% |
| Al Viro | 1 | 0.01% | 1 | 3.23% |
| Total | 10107 | 31 |
// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the Texas Instruments WL1273 FM radio. * * Copyright (C) 2011 Nokia Corporation * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> */ #include <linux/delay.h> #include <linux/firmware.h> #include <linux/interrupt.h> #include <linux/mfd/wl1273-core.h> #include <linux/slab.h> #include <linux/module.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; 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; unsigned long t; 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; reinit_completion(&radio->busy); /* wait for the FR IRQ */ t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); if (!t) return -ETIMEDOUT; dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t); /* Enable the output power */ r = core->write(core, WL1273_POWER_ENB_SET, 1); if (r) return r; reinit_completion(&radio->busy); /* wait for the POWER_ENB IRQ */ t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); if (!t) return -ETIMEDOUT; radio->tx_frequency = freq; dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t); 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; unsigned long t; 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; } reinit_completion(&radio->busy); t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); if (!t) { 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 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, "%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); if (r) { dev_err(dev, "%s: RDS_DATA_ENB ON fails\n", __func__); goto fail; } } else { r = core->write(core, WL1273_RDS_DATA_ENB, 0); if (r) { dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n", __func__); goto fail; } } } 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; /* 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; reinit_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 the FR IRQ */ wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); if (!(radio->irq_received & WL1273_BL_EVENT)) { r = -ETIMEDOUT; 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; reinit_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 the FR IRQ */ if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000))) r = -ETIMEDOUT; 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; /* 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 __poll_t 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 EPOLLERR; radio->owner = file; if (core->mode == WL1273_MODE_RX) { poll_wait(file, &radio->read_queue, pts); if (radio->rd_index != radio->wr_index) return EPOLLIN | EPOLLRDNORM; } else if (core->mode == WL1273_MODE_TX) { return EPOLLOUT | EPOLLWRNORM; } 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) { mutex_lock(&core->lock); 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, .unlocked_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__); strscpy(capability->driver, WL1273_FM_DRIVER_NAME, sizeof(capability->driver)); strscpy(capability->card, "Texas Instruments Wl1273 FM Radio", sizeof(capability->card)); strscpy(capability->bus_info, radio->bus_type, sizeof(capability->bus_info)); 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. * @radio: 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; strscpy(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, const 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; strscpy(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 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP; 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, const 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, const 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, const 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 (file->f_flags & O_NONBLOCK) return -EWOULDBLOCK; 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, const 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__); strscpy(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 const struct video_device wl1273_viddev_template = { .fops = &wl1273_fops, .ioctl_ops = &wl1273_ioctl_ops, .name = WL1273_FM_DRIVER_NAME, .release = wl1273_vdev_release, .vfl_dir = VFL_DIR_TX, .device_caps = 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, }; 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); return 0; } static int 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 = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL); if (!radio) { r = -ENOMEM; goto pdata_err; } /* RDS buffer allocation */ radio->buf_size = rds_buf * RDS_BLOCK_SIZE; radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL); if (!radio->buffer) { pr_err("Cannot allocate memory for RDS buffer.\n"); r = -ENOMEM; goto pdata_err; } 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 pdata_err; } 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 pdata_err; } init_completion(&radio->busy); init_waitqueue_head(&radio->read_queue); radio->write_buf = devm_kzalloc(&pdev->dev, 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 write_buf_err; } /* V4L2 configuration */ radio->videodev = 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->flags |= V4L2_CTRL_FLAG_VOLATILE; 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); write_buf_err: free_irq(radio->core->client->irq, radio); err_request_irq: radio->core->pdata->free_resources(); pdata_err: return r; } static struct platform_driver wl1273_fm_radio_driver = { .probe = wl1273_fm_radio_probe, .remove = wl1273_fm_radio_remove, .driver = { .name = "wl1273_fm_radio", }, }; module_platform_driver(wl1273_fm_radio_driver); MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:wl1273_fm_radio");
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