[media] radio-maxiradio: use the tea575x framework (cfb19b0a) · Commits · 戴 / test

drivers/media/radio/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -43,7 +43,7 @@ config USB_DSBR

		config RADIO_MAXIRADIO
		tristate "Guillemot MAXI Radio FM 2000 radio"
		depends on VIDEO_V4L2 && PCI
		depends on VIDEO_V4L2 && PCI && SND
		---help---
		Choose Y here if you have this radio card. This card may also be
		found as Gemtek PCI FM.

drivers/media/radio/radio-maxiradio.c

+64 −315

Original line number	Diff line number	Diff line
		@@ -42,67 +42,37 @@
		#include <linux/videodev2.h>
		#include <linux/io.h>
		#include <linux/slab.h>
		#include <sound/tea575x-tuner.h>
		#include <media/v4l2-device.h>
		#include <media/v4l2-ioctl.h>

		#define DRIVER_VERSION "0.7.8"

		#include <media/v4l2-fh.h>
		#include <media/v4l2-ctrls.h>
		#include <media/v4l2-event.h>

		MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
		MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
		MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000.");
		MODULE_LICENSE("GPL");
		MODULE_VERSION(DRIVER_VERSION);
		MODULE_VERSION("1.0.0");

		static int radio_nr = -1;
		module_param(radio_nr, int, 0);

		static int debug;

		module_param(debug, int, 0644);
		MODULE_PARM_DESC(debug, "activates debug info");

		#define dprintk(dev, num, fmt, arg...) \
		v4l2_dbg(num, debug, &dev->v4l2_dev, fmt, ## arg)

		#ifndef PCI_VENDOR_ID_GUILLEMOT
		#define PCI_VENDOR_ID_GUILLEMOT 0x5046
		#endif

		#ifndef PCI_DEVICE_ID_GUILLEMOT
		#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
		#endif

		module_param(radio_nr, int, 0644);
		MODULE_PARM_DESC(radio_nr, "Radio device number");

		/* TEA5757 pin mappings */
		static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;

		#define FREQ_LO (87 * 16000)
		#define FREQ_HI (108 * 16000)

		#define FREQ_IF 171200 /* 10.716000 /
		#define FREQ_STEP 200 /* 12.516 /

		/* (x==fmhz161000) -> bits */
		#define FREQ2BITS(x) \
		((((unsigned int)(x) + FREQ_IF + (FREQ_STEP << 1)) / (FREQ_STEP << 2)) << 2)

		#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
		static atomic_t maxiradio_instance = ATOMIC_INIT(0);

		#define PCI_VENDOR_ID_GUILLEMOT 0x5046
		#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001

		struct maxiradio
		{
		struct snd_tea575x tea;
		struct v4l2_device v4l2_dev;
		struct video_device vdev;
		struct pci_dev *pdev;

		u16 io; /* base of radio io */
		u16 muted; /* VIDEO_AUDIO_MUTE */
		u16 stereo; /* VIDEO_TUNER_STEREO_ON */
		u16 tuned; /* signal strength (0 or 0xffff) */

		unsigned long freq;

		struct mutex lock;
		};

		static inline struct maxiradio to_maxiradio(struct v4l2_device v4l2_dev)
		@@ -110,259 +80,41 @@ static inline struct maxiradio to_maxiradio(struct v4l2_device v4l2_dev)
		return container_of(v4l2_dev, struct maxiradio, v4l2_dev);
		}

		static void outbit(unsigned long bit, u16 io)
		{
		int val = power \| wren \| (bit ? data : 0);

		outb(val, io);
		udelay(4);
		outb(val \| clk, io);
		udelay(4);
		outb(val, io);
		udelay(4);
		}

		static void turn_power(struct maxiradio *dev, int p)
		{
		if (p != 0) {
		dprintk(dev, 1, "Radio powered on\n");
		outb(power, dev->io);
		} else {
		dprintk(dev, 1, "Radio powered off\n");
		outb(0, dev->io);
		}
		}

		static void set_freq(struct maxiradio *dev, u32 freq)
		{
		unsigned long int si;
		int bl;
		int io = dev->io;
		int val = FREQ2BITS(freq);

		/* TEA5757 shift register bits (see pdf) */

		outbit(0, io); /* 24 search */
		outbit(1, io); /* 23 search up/down */

		outbit(0, io); /* 22 stereo/mono */

		outbit(0, io); /* 21 band */
		outbit(0, io); /* 20 band (only 00=FM works I think) */

		outbit(0, io); /* 19 port ? */
		outbit(0, io); /* 18 port ? */

		outbit(0, io); /* 17 search level */
		outbit(0, io); /* 16 search level */

		si = 0x8000;
		for (bl = 1; bl <= 16; bl++) {
		outbit(val & si, io);
		si >>= 1;
		}

		dprintk(dev, 1, "Radio freq set to %d.%02d MHz\n",
		freq / 16000,
		freq % 16000 * 100 / 16000);

		turn_power(dev, 1);
		}

		static int get_stereo(u16 io)
		{
		outb(power,io);
		udelay(4);

		return !(inb(io) & mo_st);
		}

		static int get_tune(u16 io)
		{
		outb(power+clk,io);
		udelay(4);

		return !(inb(io) & mo_st);
		}


		static int vidioc_querycap(struct file file, void priv,
		struct v4l2_capability *v)
		{
		struct maxiradio *dev = video_drvdata(file);

		strlcpy(v->driver, "radio-maxiradio", sizeof(v->driver));
		strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof(v->card));
		snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(dev->pdev));
		v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
		return 0;
		}

		static int vidioc_g_tuner(struct file file, void priv,
		struct v4l2_tuner *v)
		static void maxiradio_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
		{
		struct maxiradio *dev = video_drvdata(file);

		if (v->index > 0)
		return -EINVAL;

		mutex_lock(&dev->lock);
		strlcpy(v->name, "FM", sizeof(v->name));
		v->type = V4L2_TUNER_RADIO;
		v->rangelow = FREQ_LO;
		v->rangehigh = FREQ_HI;
		v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
		v->capability = V4L2_TUNER_CAP_LOW;
		if (get_stereo(dev->io))
		v->audmode = V4L2_TUNER_MODE_STEREO;
		else
		v->audmode = V4L2_TUNER_MODE_MONO;
		v->signal = 0xffff * get_tune(dev->io);
		mutex_unlock(&dev->lock);
		struct maxiradio *dev = tea->private_data;
		u8 bits = 0;

		return 0;
		}

		static int vidioc_s_tuner(struct file file, void priv,
		struct v4l2_tuner *v)
		{
		return v->index ? -EINVAL : 0;
		}

		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)
		{
		return i ? -EINVAL : 0;
		}

		static int vidioc_g_audio(struct file file, void priv,
		struct v4l2_audio *a)
		{
		a->index = 0;
		strlcpy(a->name, "Radio", sizeof(a->name));
		a->capability = V4L2_AUDCAP_STEREO;
		return 0;
		}


		static int vidioc_s_audio(struct file file, void priv,
		struct v4l2_audio *a)
		{
		return a->index ? -EINVAL : 0;
		}

		static int vidioc_s_frequency(struct file file, void priv,
		struct v4l2_frequency *f)
		{
		struct maxiradio *dev = video_drvdata(file);

		if (f->tuner != 0 \|\| f->type != V4L2_TUNER_RADIO)
		return -EINVAL;
		if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI) {
		dprintk(dev, 1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
		f->frequency / 16000,
		f->frequency % 16000 * 100 / 16000,
		FREQ_LO / 16000, FREQ_HI / 16000);

		return -EINVAL;
		}

		mutex_lock(&dev->lock);
		dev->freq = f->frequency;
		set_freq(dev, dev->freq);
		msleep(125);
		mutex_unlock(&dev->lock);
		bits \|= (pins & TEA575X_DATA) ? data : 0;
		bits \|= (pins & TEA575X_CLK) ? clk : 0;
		bits \|= (pins & TEA575X_WREN) ? wren : 0;
		bits \|= power;

		return 0;
		outb(bits, dev->io);
		}

		static int vidioc_g_frequency(struct file file, void priv,
		struct v4l2_frequency *f)
		/* Note: this card cannot read out the data of the shift registers,
		only the mono/stereo pin works. */
		static u8 maxiradio_tea575x_get_pins(struct snd_tea575x *tea)
		{
		struct maxiradio *dev = video_drvdata(file);

		if (f->tuner != 0)
		return -EINVAL;
		f->type = V4L2_TUNER_RADIO;
		f->frequency = dev->freq;

		dprintk(dev, 4, "radio freq is %d.%02d MHz",
		f->frequency / 16000,
		f->frequency % 16000 * 100 / 16000);

		return 0;
		}

		static int vidioc_queryctrl(struct file file, void priv,
		struct v4l2_queryctrl *qc)
		{
		switch (qc->id) {
		case V4L2_CID_AUDIO_MUTE:
		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
		}
		return -EINVAL;
		}

		static int vidioc_g_ctrl(struct file file, void priv,
		struct v4l2_control *ctrl)
		{
		struct maxiradio *dev = video_drvdata(file);

		switch (ctrl->id) {
		case V4L2_CID_AUDIO_MUTE:
		ctrl->value = dev->muted;
		return 0;
		}
		struct maxiradio *dev = tea->private_data;
		u8 bits = inb(dev->io);

		return -EINVAL;
		return ((bits & data) ? TEA575X_DATA : 0) \|
		((bits & mo_st) ? TEA575X_MOST : 0);
		}

		static int vidioc_s_ctrl(struct file file, void priv,
		struct v4l2_control *ctrl)
		static void maxiradio_tea575x_set_direction(struct snd_tea575x *tea, bool output)
		{
		struct maxiradio *dev = video_drvdata(file);

		switch (ctrl->id) {
		case V4L2_CID_AUDIO_MUTE:
		mutex_lock(&dev->lock);
		dev->muted = ctrl->value;
		if (dev->muted)
		turn_power(dev, 0);
		else
		set_freq(dev, dev->freq);
		mutex_unlock(&dev->lock);
		return 0;
		}

		return -EINVAL;
		}

		static const struct v4l2_file_operations maxiradio_fops = {
		.owner = THIS_MODULE,
		.unlocked_ioctl = video_ioctl2,
		};

		static const struct v4l2_ioctl_ops maxiradio_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,
		static struct snd_tea575x_ops maxiradio_tea_ops = {
		.set_pins = maxiradio_tea575x_set_pins,
		.get_pins = maxiradio_tea575x_get_pins,
		.set_direction = maxiradio_tea575x_set_direction,
		};

		static int __devinit maxiradio_init_one(struct pci_dev pdev, const struct pci_device_id ent)
		static int __devinit maxiradio_probe(struct pci_dev pdev, const struct pci_device_id ent)
		{
		struct maxiradio *dev;
		struct v4l2_device *v4l2_dev;
		@@ -375,63 +127,60 @@ static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_d
		}

		v4l2_dev = &dev->v4l2_dev;
		mutex_init(&dev->lock);
		dev->pdev = pdev;
		dev->muted = 1;
		dev->freq = FREQ_LO;

		strlcpy(v4l2_dev->name, "maxiradio", sizeof(v4l2_dev->name));
		v4l2_device_set_name(v4l2_dev, "maxiradio", &maxiradio_instance);

		retval = v4l2_device_register(&pdev->dev, v4l2_dev);
		if (retval < 0) {
		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
		goto errfr;
		}
		dev->tea.private_data = dev;
		dev->tea.ops = &maxiradio_tea_ops;
		/* The data pin cannot be read. This may be a hardware limitation, or
		we just don't know how to read it. */
		dev->tea.cannot_read_data = true;
		dev->tea.v4l2_dev = v4l2_dev;
		dev->tea.radio_nr = radio_nr;
		strlcpy(dev->tea.card, "Maxi Radio FM2000", sizeof(dev->tea.card));
		snprintf(dev->tea.bus_info, sizeof(dev->tea.bus_info),
		"PCI:%s", pci_name(pdev));

		retval = -ENODEV;

		if (!request_region(pci_resource_start(pdev, 0),
		pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
		v4l2_err(v4l2_dev, "can't reserve I/O ports\n");
		goto err_out;
		pci_resource_len(pdev, 0), v4l2_dev->name)) {
		dev_err(&pdev->dev, "can't reserve I/O ports\n");
		goto err_hdl;
		}

		if (pci_enable_device(pdev))
		goto err_out_free_region;

		dev->io = pci_resource_start(pdev, 0);
		strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
		dev->vdev.v4l2_dev = v4l2_dev;
		dev->vdev.fops = &maxiradio_fops;
		dev->vdev.ioctl_ops = &maxiradio_ioctl_ops;
		dev->vdev.release = video_device_release_empty;
		video_set_drvdata(&dev->vdev, dev);

		if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
		v4l2_err(v4l2_dev, "can't register device!");
		if (snd_tea575x_init(&dev->tea)) {
		printk(KERN_ERR "radio-maxiradio: Unable to detect TEA575x tuner\n");
		goto err_out_free_region;
		}

		v4l2_info(v4l2_dev, "version " DRIVER_VERSION "\n");

		v4l2_info(v4l2_dev, "found Guillemot MAXI Radio device (io = 0x%x)\n",
		dev->io);
		return 0;

		err_out_free_region:
		release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
		err_out:
		err_hdl:
		v4l2_device_unregister(v4l2_dev);
		errfr:
		kfree(dev);
		return -ENODEV;
		return retval;
		}

		static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
		static void __devexit maxiradio_remove(struct pci_dev *pdev)
		{
		struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
		struct maxiradio *dev = to_maxiradio(v4l2_dev);

		video_unregister_device(&dev->vdev);
		v4l2_device_unregister(&dev->v4l2_dev);
		snd_tea575x_exit(&dev->tea);
		/* Turn off power */
		outb(0, dev->io);
		v4l2_device_unregister(v4l2_dev);
		release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
		}

		@@ -446,19 +195,19 @@ MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
		static struct pci_driver maxiradio_driver = {
		.name = "radio-maxiradio",
		.id_table = maxiradio_pci_tbl,
		.probe = maxiradio_init_one,
		.remove = __devexit_p(maxiradio_remove_one),
		.probe = maxiradio_probe,
		.remove = __devexit_p(maxiradio_remove),
		};

		static int __init maxiradio_radio_init(void)
		static int __init maxiradio_init(void)
		{
		return pci_register_driver(&maxiradio_driver);
		}

		static void __exit maxiradio_radio_exit(void)
		static void __exit maxiradio_exit(void)
		{
		pci_unregister_driver(&maxiradio_driver);
		}

		module_init(maxiradio_radio_init);
		module_exit(maxiradio_radio_exit);
		module_init(maxiradio_init);
		module_exit(maxiradio_exit);

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