| /* |
| * driver/media/radio/radio-tea5764.c |
| * |
| * Driver for TEA5764 radio chip for linux 2.6. |
| * This driver is for TEA5764 chip from NXP, used in EZX phones from Motorola. |
| * The I2C protocol is used for communicate with chip. |
| * |
| * Based in radio-tea5761.c Copyright (C) 2005 Nokia Corporation |
| * |
| * Copyright (c) 2008 Fabio Belavenuto <belavenuto@gmail.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 |
| * |
| * History: |
| * 2008-12-06 Fabio Belavenuto <belavenuto@gmail.com> |
| * initial code |
| * |
| * TODO: |
| * add platform_data support for IRQs platform dependencies |
| * add RDS support |
| */ |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> /* Initdata */ |
| #include <linux/videodev2.h> /* kernel radio structs */ |
| #include <linux/i2c.h> /* I2C */ |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-ioctl.h> |
| #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
| |
| #define DRIVER_VERSION "v0.01" |
| #define RADIO_VERSION KERNEL_VERSION(0, 0, 1) |
| |
| #define DRIVER_AUTHOR "Fabio Belavenuto <belavenuto@gmail.com>" |
| #define DRIVER_DESC "A driver for the TEA5764 radio chip for EZX Phones." |
| |
| #define PINFO(format, ...)\ |
| printk(KERN_INFO KBUILD_MODNAME ": "\ |
| DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) |
| #define PWARN(format, ...)\ |
| printk(KERN_WARNING KBUILD_MODNAME ": "\ |
| DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) |
| # define PDEBUG(format, ...)\ |
| printk(KERN_DEBUG KBUILD_MODNAME ": "\ |
| DRIVER_VERSION ": " format "\n", ## __VA_ARGS__) |
| |
| /* Frequency limits in MHz -- these are European values. For Japanese |
| devices, that would be 76000 and 91000. */ |
| #define FREQ_MIN 87500 |
| #define FREQ_MAX 108000 |
| #define FREQ_MUL 16 |
| |
| /* TEA5764 registers */ |
| #define TEA5764_MANID 0x002b |
| #define TEA5764_CHIPID 0x5764 |
| |
| #define TEA5764_INTREG_BLMSK 0x0001 |
| #define TEA5764_INTREG_FRRMSK 0x0002 |
| #define TEA5764_INTREG_LEVMSK 0x0008 |
| #define TEA5764_INTREG_IFMSK 0x0010 |
| #define TEA5764_INTREG_BLMFLAG 0x0100 |
| #define TEA5764_INTREG_FRRFLAG 0x0200 |
| #define TEA5764_INTREG_LEVFLAG 0x0800 |
| #define TEA5764_INTREG_IFFLAG 0x1000 |
| |
| #define TEA5764_FRQSET_SUD 0x8000 |
| #define TEA5764_FRQSET_SM 0x4000 |
| |
| #define TEA5764_TNCTRL_PUPD1 0x8000 |
| #define TEA5764_TNCTRL_PUPD0 0x4000 |
| #define TEA5764_TNCTRL_BLIM 0x2000 |
| #define TEA5764_TNCTRL_SWPM 0x1000 |
| #define TEA5764_TNCTRL_IFCTC 0x0800 |
| #define TEA5764_TNCTRL_AFM 0x0400 |
| #define TEA5764_TNCTRL_SMUTE 0x0200 |
| #define TEA5764_TNCTRL_SNC 0x0100 |
| #define TEA5764_TNCTRL_MU 0x0080 |
| #define TEA5764_TNCTRL_SSL1 0x0040 |
| #define TEA5764_TNCTRL_SSL0 0x0020 |
| #define TEA5764_TNCTRL_HLSI 0x0010 |
| #define TEA5764_TNCTRL_MST 0x0008 |
| #define TEA5764_TNCTRL_SWP 0x0004 |
| #define TEA5764_TNCTRL_DTC 0x0002 |
| #define TEA5764_TNCTRL_AHLSI 0x0001 |
| |
| #define TEA5764_TUNCHK_LEVEL(x) (((x) & 0x00F0) >> 4) |
| #define TEA5764_TUNCHK_IFCNT(x) (((x) & 0xFE00) >> 9) |
| #define TEA5764_TUNCHK_TUNTO 0x0100 |
| #define TEA5764_TUNCHK_LD 0x0008 |
| #define TEA5764_TUNCHK_STEREO 0x0004 |
| |
| #define TEA5764_TESTREG_TRIGFR 0x0800 |
| |
| struct tea5764_regs { |
| u16 intreg; /* INTFLAG & INTMSK */ |
| u16 frqset; /* FRQSETMSB & FRQSETLSB */ |
| u16 tnctrl; /* TNCTRL1 & TNCTRL2 */ |
| u16 frqchk; /* FRQCHKMSB & FRQCHKLSB */ |
| u16 tunchk; /* IFCHK & LEVCHK */ |
| u16 testreg; /* TESTBITS & TESTMODE */ |
| u16 rdsstat; /* RDSSTAT1 & RDSSTAT2 */ |
| u16 rdslb; /* RDSLBMSB & RDSLBLSB */ |
| u16 rdspb; /* RDSPBMSB & RDSPBLSB */ |
| u16 rdsbc; /* RDSBBC & RDSGBC */ |
| u16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */ |
| u16 rdsbbl; /* PAUSEDET & RDSBBL */ |
| u16 manid; /* MANID1 & MANID2 */ |
| u16 chipid; /* CHIPID1 & CHIPID2 */ |
| } __attribute__ ((packed)); |
| |
| struct tea5764_write_regs { |
| u8 intreg; /* INTMSK */ |
| u16 frqset; /* FRQSETMSB & FRQSETLSB */ |
| u16 tnctrl; /* TNCTRL1 & TNCTRL2 */ |
| u16 testreg; /* TESTBITS & TESTMODE */ |
| u16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */ |
| u16 rdsbbl; /* PAUSEDET & RDSBBL */ |
| } __attribute__ ((packed)); |
| |
| #ifndef RADIO_TEA5764_XTAL |
| #define RADIO_TEA5764_XTAL 1 |
| #endif |
| |
| static int radio_nr = -1; |
| static int use_xtal = RADIO_TEA5764_XTAL; |
| |
| struct tea5764_device { |
| struct i2c_client *i2c_client; |
| struct video_device *videodev; |
| struct tea5764_regs regs; |
| struct mutex mutex; |
| int users; |
| }; |
| |
| /* I2C code related */ |
| int tea5764_i2c_read(struct tea5764_device *radio) |
| { |
| int i; |
| u16 *p = (u16 *) &radio->regs; |
| |
| struct i2c_msg msgs[1] = { |
| { radio->i2c_client->addr, I2C_M_RD, sizeof(radio->regs), |
| (void *)&radio->regs }, |
| }; |
| if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1) |
| return -EIO; |
| for (i = 0; i < sizeof(struct tea5764_regs) / sizeof(u16); i++) |
| p[i] = __be16_to_cpu(p[i]); |
| |
| return 0; |
| } |
| |
| int tea5764_i2c_write(struct tea5764_device *radio) |
| { |
| struct tea5764_write_regs wr; |
| struct tea5764_regs *r = &radio->regs; |
| struct i2c_msg msgs[1] = { |
| { radio->i2c_client->addr, 0, sizeof(wr), (void *) &wr }, |
| }; |
| wr.intreg = r->intreg & 0xff; |
| wr.frqset = __cpu_to_be16(r->frqset); |
| wr.tnctrl = __cpu_to_be16(r->tnctrl); |
| wr.testreg = __cpu_to_be16(r->testreg); |
| wr.rdsctrl = __cpu_to_be16(r->rdsctrl); |
| wr.rdsbbl = __cpu_to_be16(r->rdsbbl); |
| if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1) |
| return -EIO; |
| return 0; |
| } |
| |
| /* V4L2 code related */ |
| static struct v4l2_queryctrl radio_qctrl[] = { |
| { |
| .id = V4L2_CID_AUDIO_MUTE, |
| .name = "Mute", |
| .minimum = 0, |
| .maximum = 1, |
| .default_value = 1, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| } |
| }; |
| |
| static void tea5764_power_up(struct tea5764_device *radio) |
| { |
| struct tea5764_regs *r = &radio->regs; |
| |
| if (!(r->tnctrl & TEA5764_TNCTRL_PUPD0)) { |
| r->tnctrl &= ~(TEA5764_TNCTRL_AFM | TEA5764_TNCTRL_MU | |
| TEA5764_TNCTRL_HLSI); |
| if (!use_xtal) |
| r->testreg |= TEA5764_TESTREG_TRIGFR; |
| else |
| r->testreg &= ~TEA5764_TESTREG_TRIGFR; |
| |
| r->tnctrl |= TEA5764_TNCTRL_PUPD0; |
| tea5764_i2c_write(radio); |
| } |
| } |
| |
| static void tea5764_power_down(struct tea5764_device *radio) |
| { |
| struct tea5764_regs *r = &radio->regs; |
| |
| if (r->tnctrl & TEA5764_TNCTRL_PUPD0) { |
| r->tnctrl &= ~TEA5764_TNCTRL_PUPD0; |
| tea5764_i2c_write(radio); |
| } |
| } |
| |
| static void tea5764_set_freq(struct tea5764_device *radio, int freq) |
| { |
| struct tea5764_regs *r = &radio->regs; |
| |
| /* formula: (freq [+ or -] 225000) / 8192 */ |
| if (r->tnctrl & TEA5764_TNCTRL_HLSI) |
| r->frqset = (freq + 225000) / 8192; |
| else |
| r->frqset = (freq - 225000) / 8192; |
| } |
| |
| static int tea5764_get_freq(struct tea5764_device *radio) |
| { |
| struct tea5764_regs *r = &radio->regs; |
| |
| if (r->tnctrl & TEA5764_TNCTRL_HLSI) |
| return (r->frqchk * 8192) - 225000; |
| else |
| return (r->frqchk * 8192) + 225000; |
| } |
| |
| /* tune an frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ |
| static void tea5764_tune(struct tea5764_device *radio, int freq) |
| { |
| tea5764_set_freq(radio, freq); |
| if (tea5764_i2c_write(radio)) |
| PWARN("Could not set frequency!"); |
| } |
| |
| static void tea5764_set_audout_mode(struct tea5764_device *radio, int audmode) |
| { |
| struct tea5764_regs *r = &radio->regs; |
| int tnctrl = r->tnctrl; |
| |
| if (audmode == V4L2_TUNER_MODE_MONO) |
| r->tnctrl |= TEA5764_TNCTRL_MST; |
| else |
| r->tnctrl &= ~TEA5764_TNCTRL_MST; |
| if (tnctrl != r->tnctrl) |
| tea5764_i2c_write(radio); |
| } |
| |
| static int tea5764_get_audout_mode(struct tea5764_device *radio) |
| { |
| struct tea5764_regs *r = &radio->regs; |
| |
| if (r->tnctrl & TEA5764_TNCTRL_MST) |
| return V4L2_TUNER_MODE_MONO; |
| else |
| return V4L2_TUNER_MODE_STEREO; |
| } |
| |
| static void tea5764_mute(struct tea5764_device *radio, int on) |
| { |
| struct tea5764_regs *r = &radio->regs; |
| int tnctrl = r->tnctrl; |
| |
| if (on) |
| r->tnctrl |= TEA5764_TNCTRL_MU; |
| else |
| r->tnctrl &= ~TEA5764_TNCTRL_MU; |
| if (tnctrl != r->tnctrl) |
| tea5764_i2c_write(radio); |
| } |
| |
| static int tea5764_is_muted(struct tea5764_device *radio) |
| { |
| return radio->regs.tnctrl & TEA5764_TNCTRL_MU; |
| } |
| |
| /* V4L2 vidioc */ |
| static int vidioc_querycap(struct file *file, void *priv, |
| struct v4l2_capability *v) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| struct video_device *dev = radio->videodev; |
| |
| strlcpy(v->driver, dev->dev.driver->name, sizeof(v->driver)); |
| strlcpy(v->card, dev->name, sizeof(v->card)); |
| snprintf(v->bus_info, sizeof(v->bus_info), |
| "I2C:%s", dev_name(&dev->dev)); |
| v->version = RADIO_VERSION; |
| v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
| return 0; |
| } |
| |
| static int vidioc_g_tuner(struct file *file, void *priv, |
| struct v4l2_tuner *v) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| struct tea5764_regs *r = &radio->regs; |
| |
| if (v->index > 0) |
| return -EINVAL; |
| |
| memset(v, 0, sizeof(v)); |
| strcpy(v->name, "FM"); |
| v->type = V4L2_TUNER_RADIO; |
| tea5764_i2c_read(radio); |
| v->rangelow = FREQ_MIN * FREQ_MUL; |
| v->rangehigh = FREQ_MAX * FREQ_MUL; |
| v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; |
| if (r->tunchk & TEA5764_TUNCHK_STEREO) |
| v->rxsubchans = V4L2_TUNER_SUB_STEREO; |
| else |
| v->rxsubchans = V4L2_TUNER_SUB_MONO; |
| v->audmode = tea5764_get_audout_mode(radio); |
| v->signal = TEA5764_TUNCHK_LEVEL(r->tunchk) * 0xffff / 0xf; |
| v->afc = TEA5764_TUNCHK_IFCNT(r->tunchk); |
| |
| return 0; |
| } |
| |
| static int vidioc_s_tuner(struct file *file, void *priv, |
| struct v4l2_tuner *v) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| |
| if (v->index > 0) |
| return -EINVAL; |
| |
| tea5764_set_audout_mode(radio, v->audmode); |
| return 0; |
| } |
| |
| static int vidioc_s_frequency(struct file *file, void *priv, |
| struct v4l2_frequency *f) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| |
| if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
| return -EINVAL; |
| if (f->frequency == 0) { |
| /* We special case this as a power down control. */ |
| tea5764_power_down(radio); |
| } |
| if (f->frequency < (FREQ_MIN * FREQ_MUL)) |
| return -EINVAL; |
| if (f->frequency > (FREQ_MAX * FREQ_MUL)) |
| return -EINVAL; |
| tea5764_power_up(radio); |
| tea5764_tune(radio, (f->frequency * 125) / 2); |
| return 0; |
| } |
| |
| static int vidioc_g_frequency(struct file *file, void *priv, |
| struct v4l2_frequency *f) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| struct tea5764_regs *r = &radio->regs; |
| |
| if (f->tuner != 0) |
| return -EINVAL; |
| tea5764_i2c_read(radio); |
| memset(f, 0, sizeof(f)); |
| f->type = V4L2_TUNER_RADIO; |
| if (r->tnctrl & TEA5764_TNCTRL_PUPD0) |
| f->frequency = (tea5764_get_freq(radio) * 2) / 125; |
| else |
| f->frequency = 0; |
| |
| return 0; |
| } |
| |
| static int vidioc_queryctrl(struct file *file, void *priv, |
| struct v4l2_queryctrl *qc) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { |
| if (qc->id && qc->id == radio_qctrl[i].id) { |
| memcpy(qc, &(radio_qctrl[i]), sizeof(*qc)); |
| return 0; |
| } |
| } |
| return -EINVAL; |
| } |
| |
| static int vidioc_g_ctrl(struct file *file, void *priv, |
| struct v4l2_control *ctrl) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| |
| switch (ctrl->id) { |
| case V4L2_CID_AUDIO_MUTE: |
| tea5764_i2c_read(radio); |
| ctrl->value = tea5764_is_muted(radio) ? 1 : 0; |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| static int vidioc_s_ctrl(struct file *file, void *priv, |
| struct v4l2_control *ctrl) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| |
| switch (ctrl->id) { |
| case V4L2_CID_AUDIO_MUTE: |
| tea5764_mute(radio, ctrl->value); |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
| { |
| *i = 0; |
| return 0; |
| } |
| |
| static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
| { |
| if (i != 0) |
| return -EINVAL; |
| return 0; |
| } |
| |
| static int vidioc_g_audio(struct file *file, void *priv, |
| struct v4l2_audio *a) |
| { |
| if (a->index > 1) |
| return -EINVAL; |
| |
| strcpy(a->name, "Radio"); |
| a->capability = V4L2_AUDCAP_STEREO; |
| return 0; |
| } |
| |
| static int vidioc_s_audio(struct file *file, void *priv, |
| struct v4l2_audio *a) |
| { |
| if (a->index != 0) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static int tea5764_open(struct file *file) |
| { |
| /* Currently we support only one device */ |
| int minor = video_devdata(file)->minor; |
| struct tea5764_device *radio = video_drvdata(file); |
| |
| if (radio->videodev->minor != minor) |
| return -ENODEV; |
| |
| mutex_lock(&radio->mutex); |
| /* Only exclusive access */ |
| if (radio->users) { |
| mutex_unlock(&radio->mutex); |
| return -EBUSY; |
| } |
| radio->users++; |
| mutex_unlock(&radio->mutex); |
| file->private_data = radio; |
| return 0; |
| } |
| |
| static int tea5764_close(struct file *file) |
| { |
| struct tea5764_device *radio = video_drvdata(file); |
| |
| if (!radio) |
| return -ENODEV; |
| mutex_lock(&radio->mutex); |
| radio->users--; |
| mutex_unlock(&radio->mutex); |
| return 0; |
| } |
| |
| /* File system interface */ |
| static const struct v4l2_file_operations tea5764_fops = { |
| .owner = THIS_MODULE, |
| .open = tea5764_open, |
| .release = tea5764_close, |
| .ioctl = video_ioctl2, |
| }; |
| |
| static const struct v4l2_ioctl_ops tea5764_ioctl_ops = { |
| .vidioc_querycap = vidioc_querycap, |
| .vidioc_g_tuner = vidioc_g_tuner, |
| .vidioc_s_tuner = vidioc_s_tuner, |
| .vidioc_g_audio = vidioc_g_audio, |
| .vidioc_s_audio = vidioc_s_audio, |
| .vidioc_g_input = vidioc_g_input, |
| .vidioc_s_input = vidioc_s_input, |
| .vidioc_g_frequency = vidioc_g_frequency, |
| .vidioc_s_frequency = vidioc_s_frequency, |
| .vidioc_queryctrl = vidioc_queryctrl, |
| .vidioc_g_ctrl = vidioc_g_ctrl, |
| .vidioc_s_ctrl = vidioc_s_ctrl, |
| }; |
| |
| /* V4L2 interface */ |
| static struct video_device tea5764_radio_template = { |
| .name = "TEA5764 FM-Radio", |
| .fops = &tea5764_fops, |
| .ioctl_ops = &tea5764_ioctl_ops, |
| .release = video_device_release, |
| }; |
| |
| /* I2C probe: check if the device exists and register with v4l if it is */ |
| static int __devinit tea5764_i2c_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct tea5764_device *radio; |
| struct tea5764_regs *r; |
| int ret; |
| |
| PDEBUG("probe"); |
| radio = kmalloc(sizeof(struct tea5764_device), GFP_KERNEL); |
| if (!radio) |
| return -ENOMEM; |
| |
| mutex_init(&radio->mutex); |
| radio->i2c_client = client; |
| ret = tea5764_i2c_read(radio); |
| if (ret) |
| goto errfr; |
| r = &radio->regs; |
| PDEBUG("chipid = %04X, manid = %04X", r->chipid, r->manid); |
| if (r->chipid != TEA5764_CHIPID || |
| (r->manid & 0x0fff) != TEA5764_MANID) { |
| PWARN("This chip is not a TEA5764!"); |
| ret = -EINVAL; |
| goto errfr; |
| } |
| |
| radio->videodev = video_device_alloc(); |
| if (!(radio->videodev)) { |
| ret = -ENOMEM; |
| goto errfr; |
| } |
| memcpy(radio->videodev, &tea5764_radio_template, |
| sizeof(tea5764_radio_template)); |
| |
| i2c_set_clientdata(client, radio); |
| video_set_drvdata(radio->videodev, radio); |
| |
| ret = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); |
| if (ret < 0) { |
| PWARN("Could not register video device!"); |
| goto errrel; |
| } |
| |
| /* initialize and power off the chip */ |
| tea5764_i2c_read(radio); |
| tea5764_set_audout_mode(radio, V4L2_TUNER_MODE_STEREO); |
| tea5764_mute(radio, 1); |
| tea5764_power_down(radio); |
| |
| PINFO("registered."); |
| return 0; |
| errrel: |
| video_device_release(radio->videodev); |
| errfr: |
| kfree(radio); |
| return ret; |
| } |
| |
| static int __devexit tea5764_i2c_remove(struct i2c_client *client) |
| { |
| struct tea5764_device *radio = i2c_get_clientdata(client); |
| |
| PDEBUG("remove"); |
| if (radio) { |
| tea5764_power_down(radio); |
| video_unregister_device(radio->videodev); |
| kfree(radio); |
| } |
| return 0; |
| } |
| |
| /* I2C subsystem interface */ |
| static const struct i2c_device_id tea5764_id[] = { |
| { "radio-tea5764", 0 }, |
| { } /* Terminating entry */ |
| }; |
| MODULE_DEVICE_TABLE(i2c, tea5764_id); |
| |
| static struct i2c_driver tea5764_i2c_driver = { |
| .driver = { |
| .name = "radio-tea5764", |
| .owner = THIS_MODULE, |
| }, |
| .probe = tea5764_i2c_probe, |
| .remove = __devexit_p(tea5764_i2c_remove), |
| .id_table = tea5764_id, |
| }; |
| |
| /* init the driver */ |
| static int __init tea5764_init(void) |
| { |
| int ret = i2c_add_driver(&tea5764_i2c_driver); |
| |
| printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ": " |
| DRIVER_DESC "\n"); |
| return ret; |
| } |
| |
| /* cleanup the driver */ |
| static void __exit tea5764_exit(void) |
| { |
| i2c_del_driver(&tea5764_i2c_driver); |
| } |
| |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| |
| module_param(use_xtal, int, 1); |
| MODULE_PARM_DESC(use_xtal, "Chip have a xtal connected in board"); |
| module_param(radio_nr, int, 0); |
| MODULE_PARM_DESC(radio_nr, "video4linux device number to use"); |
| |
| module_init(tea5764_init); |
| module_exit(tea5764_exit); |