From 3088fba877ee8bf284b12a73332b813b5478a64d Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 16 Jan 2012 04:58:15 -0300 Subject: [PATCH] [media] radio-aztech: Convert to radio-isa Tested with actual hardware and the Keene USB FM Transmitter. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/Kconfig | 6 +- drivers/media/radio/radio-aztech.c | 371 ++++++++----------------------------- 2 files changed, 80 insertions(+), 297 deletions(-) diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig index 618c332..645fe57 100644 --- a/drivers/media/radio/Kconfig +++ b/drivers/media/radio/Kconfig @@ -256,15 +256,11 @@ config RADIO_RTRACK2_PORT config RADIO_AZTECH tristate "Aztech/Packard Bell Radio" depends on ISA && VIDEO_V4L2 + select RADIO_ISA ---help--- Choose Y here if you have one of these FM radio cards, and then fill in the port address below. - In order to control your radio card, you will need to use programs - that are compatible with the Video For Linux API. Information on - this API and pointers to "v4l" programs may be found at - . - To compile this driver as a module, choose M here: the module will be called radio-aztech. diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c index eed7b08..8117fdf 100644 --- a/drivers/media/radio/radio-aztech.c +++ b/drivers/media/radio/radio-aztech.c @@ -1,5 +1,7 @@ -/* radio-aztech.c - Aztech radio card driver for Linux 2.2 +/* + * radio-aztech.c - Aztech radio card driver * + * Converted to the radio-isa framework by Hans Verkuil * Converted to V4L2 API by Mauro Carvalho Chehab * Adapted to support the Video for Linux API by * Russell Kroll . Based on original tuner code by: @@ -10,19 +12,7 @@ * Scott McGrath (smcgrath@twilight.vtc.vsc.edu) * William McGrath (wmcgrath@twilight.vtc.vsc.edu) * - * The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/ - * along with more information on the card itself. - * - * History: - * 1999-02-24 Russell Kroll - * Fine tuning/VIDEO_TUNER_LOW - * Range expanded to 87-108 MHz (from 87.9-107.8) - * - * Notable changes from the original source: - * - includes stripped down to the essentials - * - for loops used as delays replaced with udelay() - * - #defines removed, changed to static values - * - tuning structure changed - no more character arrays, other changes + * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. */ #include /* Modules */ @@ -33,124 +23,69 @@ #include /* outb, outb_p */ #include #include +#include +#include "radio-isa.h" MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath"); MODULE_DESCRIPTION("A driver for the Aztech radio card."); MODULE_LICENSE("GPL"); -MODULE_VERSION("0.0.3"); +MODULE_VERSION("1.0.0"); /* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */ - #ifndef CONFIG_RADIO_AZTECH_PORT #define CONFIG_RADIO_AZTECH_PORT -1 #endif -static int io = CONFIG_RADIO_AZTECH_PORT; -static int radio_nr = -1; -static int radio_wait_time = 1000; +#define AZTECH_MAX 2 -module_param(io, int, 0); -module_param(radio_nr, int, 0); -MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)"); +static int io[AZTECH_MAX] = { [0] = CONFIG_RADIO_AZTECH_PORT, + [1 ... (AZTECH_MAX - 1)] = -1 }; +static int radio_nr[AZTECH_MAX] = { [0 ... (AZTECH_MAX - 1)] = -1 }; +static const int radio_wait_time = 1000; -struct aztech -{ - struct v4l2_device v4l2_dev; - struct video_device vdev; - int io; +module_param_array(io, int, NULL, 0444); +MODULE_PARM_DESC(io, "I/O addresses of the Aztech card (0x350 or 0x358)"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Radio device numbers"); + +struct aztech { + struct radio_isa_card isa; int curvol; - unsigned long curfreq; - int stereo; - struct mutex lock; }; -static struct aztech aztech_card; - -static int volconvert(int level) -{ - level >>= 14; /* Map 16bits down to 2 bit */ - level &= 3; - - /* convert to card-friendly values */ - switch (level) { - case 0: - return 0; - case 1: - return 1; - case 2: - return 4; - case 3: - return 5; - } - return 0; /* Quieten gcc */ -} - static void send_0_byte(struct aztech *az) { udelay(radio_wait_time); - outb_p(2 + volconvert(az->curvol), az->io); - outb_p(64 + 2 + volconvert(az->curvol), az->io); + outb_p(2 + az->curvol, az->isa.io); + outb_p(64 + 2 + az->curvol, az->isa.io); } static void send_1_byte(struct aztech *az) { - udelay (radio_wait_time); - outb_p(128 + 2 + volconvert(az->curvol), az->io); - outb_p(128 + 64 + 2 + volconvert(az->curvol), az->io); -} - -static int az_setvol(struct aztech *az, int vol) -{ - mutex_lock(&az->lock); - outb(volconvert(vol), az->io); - mutex_unlock(&az->lock); - return 0; -} - -/* thanks to Michael Dwyer for giving me a dose of clues in - * the signal strength department.. - * - * This card has a stereo bit - bit 0 set = mono, not set = stereo - * It also has a "signal" bit - bit 1 set = bad signal, not set = good - * - */ - -static int az_getsigstr(struct aztech *az) -{ - int sig = 1; - - mutex_lock(&az->lock); - if (inb(az->io) & 2) /* bit set = no signal present */ - sig = 0; - mutex_unlock(&az->lock); - return sig; + udelay(radio_wait_time); + outb_p(128 + 2 + az->curvol, az->isa.io); + outb_p(128 + 64 + 2 + az->curvol, az->isa.io); } -static int az_getstereo(struct aztech *az) +static struct radio_isa_card *aztech_alloc(void) { - int stereo = 1; + struct aztech *az = kzalloc(sizeof(*az), GFP_KERNEL); - mutex_lock(&az->lock); - if (inb(az->io) & 1) /* bit set = mono */ - stereo = 0; - mutex_unlock(&az->lock); - return stereo; + return az ? &az->isa : NULL; } -static int az_setfreq(struct aztech *az, unsigned long frequency) +static int aztech_s_frequency(struct radio_isa_card *isa, u32 freq) { + struct aztech *az = container_of(isa, struct aztech, isa); int i; - mutex_lock(&az->lock); - - az->curfreq = frequency; - frequency += 171200; /* Add 10.7 MHz IF */ - frequency /= 800; /* Convert to 50 kHz units */ + freq += 171200; /* Add 10.7 MHz IF */ + freq /= 800; /* Convert to 50 kHz units */ send_0_byte(az); /* 0: LSB of frequency */ for (i = 0; i < 13; i++) /* : frequency bits (1-13) */ - if (frequency & (1 << i)) + if (freq & (1 << i)) send_1_byte(az); else send_0_byte(az); @@ -158,7 +93,7 @@ static int az_setfreq(struct aztech *az, unsigned long frequency) send_0_byte(az); /* 14: test bit - always 0 */ send_0_byte(az); /* 15: test bit - always 0 */ send_0_byte(az); /* 16: band data 0 - always 0 */ - if (az->stereo) /* 17: stereo (1 to enable) */ + if (isa->stereo) /* 17: stereo (1 to enable) */ send_1_byte(az); else send_0_byte(az); @@ -173,225 +108,77 @@ static int az_setfreq(struct aztech *az, unsigned long frequency) /* latch frequency */ udelay(radio_wait_time); - outb_p(128 + 64 + volconvert(az->curvol), az->io); - - mutex_unlock(&az->lock); - - return 0; -} - -static int vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *v) -{ - strlcpy(v->driver, "radio-aztech", sizeof(v->driver)); - strlcpy(v->card, "Aztech Radio", sizeof(v->card)); - strlcpy(v->bus_info, "ISA", sizeof(v->bus_info)); - 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 aztech *az = video_drvdata(file); - - if (v->index > 0) - return -EINVAL; - - strlcpy(v->name, "FM", sizeof(v->name)); - v->type = V4L2_TUNER_RADIO; - - v->rangelow = 87 * 16000; - v->rangehigh = 108 * 16000; - v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; - v->capability = V4L2_TUNER_CAP_LOW; - if (az_getstereo(az)) - v->audmode = V4L2_TUNER_MODE_STEREO; - else - v->audmode = V4L2_TUNER_MODE_MONO; - v->signal = 0xFFFF * az_getsigstr(az); - - return 0; -} - -static int vidioc_s_tuner(struct file *file, void *priv, - struct v4l2_tuner *v) -{ - return v->index ? -EINVAL : 0; -} + outb_p(128 + 64 + az->curvol, az->isa.io); -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) +/* thanks to Michael Dwyer for giving me a dose of clues in + * the signal strength department.. + * + * This card has a stereo bit - bit 0 set = mono, not set = stereo + */ +static u32 aztech_g_rxsubchans(struct radio_isa_card *isa) { - return a->index ? -EINVAL : 0; + if (inb(isa->io) & 1) + return V4L2_TUNER_SUB_MONO; + return V4L2_TUNER_SUB_STEREO; } -static int vidioc_s_frequency(struct file *file, void *priv, - struct v4l2_frequency *f) +static int aztech_s_stereo(struct radio_isa_card *isa, bool stereo) { - struct aztech *az = video_drvdata(file); - - if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) - return -EINVAL; - az_setfreq(az, f->frequency); - return 0; + return aztech_s_frequency(isa, isa->freq); } -static int vidioc_g_frequency(struct file *file, void *priv, - struct v4l2_frequency *f) +static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) { - struct aztech *az = video_drvdata(file); + struct aztech *az = container_of(isa, struct aztech, isa); - if (f->tuner != 0) - return -EINVAL; - f->type = V4L2_TUNER_RADIO; - f->frequency = az->curfreq; + if (mute) + vol = 0; + az->curvol = (vol & 1) + ((vol & 2) << 1); + outb(az->curvol, isa->io); 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); - case V4L2_CID_AUDIO_VOLUME: - return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff); - } - return -EINVAL; -} - -static int vidioc_g_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct aztech *az = video_drvdata(file); - - switch (ctrl->id) { - case V4L2_CID_AUDIO_MUTE: - if (az->curvol == 0) - ctrl->value = 1; - else - ctrl->value = 0; - return 0; - case V4L2_CID_AUDIO_VOLUME: - ctrl->value = az->curvol * 6554; - return 0; - } - return -EINVAL; -} - -static int vidioc_s_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct aztech *az = video_drvdata(file); - - switch (ctrl->id) { - case V4L2_CID_AUDIO_MUTE: - if (ctrl->value) - az_setvol(az, 0); - else - az_setvol(az, az->curvol); - return 0; - case V4L2_CID_AUDIO_VOLUME: - az_setvol(az, ctrl->value); - return 0; - } - return -EINVAL; -} - -static const struct v4l2_file_operations aztech_fops = { - .owner = THIS_MODULE, - .unlocked_ioctl = video_ioctl2, +static const struct radio_isa_ops aztech_ops = { + .alloc = aztech_alloc, + .s_mute_volume = aztech_s_mute_volume, + .s_frequency = aztech_s_frequency, + .s_stereo = aztech_s_stereo, + .g_rxsubchans = aztech_g_rxsubchans, }; -static const struct v4l2_ioctl_ops aztech_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 const int aztech_ioports[] = { 0x350, 0x358 }; + +static struct radio_isa_driver aztech_driver = { + .driver = { + .match = radio_isa_match, + .probe = radio_isa_probe, + .remove = radio_isa_remove, + .driver = { + .name = "radio-aztech", + }, + }, + .io_params = io, + .radio_nr_params = radio_nr, + .io_ports = aztech_ioports, + .num_of_io_ports = ARRAY_SIZE(aztech_ioports), + .region_size = 2, + .card = "Aztech Radio", + .ops = &aztech_ops, + .has_stereo = true, + .max_volume = 3, }; static int __init aztech_init(void) { - struct aztech *az = &aztech_card; - struct v4l2_device *v4l2_dev = &az->v4l2_dev; - int res; - - strlcpy(v4l2_dev->name, "aztech", sizeof(v4l2_dev->name)); - az->io = io; - - if (az->io == -1) { - v4l2_err(v4l2_dev, "you must set an I/O address with io=0x350 or 0x358\n"); - return -EINVAL; - } - - if (!request_region(az->io, 2, "aztech")) { - v4l2_err(v4l2_dev, "port 0x%x already in use\n", az->io); - return -EBUSY; - } - - res = v4l2_device_register(NULL, v4l2_dev); - if (res < 0) { - release_region(az->io, 2); - v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); - return res; - } - - mutex_init(&az->lock); - strlcpy(az->vdev.name, v4l2_dev->name, sizeof(az->vdev.name)); - az->vdev.v4l2_dev = v4l2_dev; - az->vdev.fops = &aztech_fops; - az->vdev.ioctl_ops = &aztech_ioctl_ops; - az->vdev.release = video_device_release_empty; - video_set_drvdata(&az->vdev, az); - /* mute card - prevents noisy bootups */ - outb(0, az->io); - - if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { - v4l2_device_unregister(v4l2_dev); - release_region(az->io, 2); - return -EINVAL; - } - - v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n"); - return 0; + return isa_register_driver(&aztech_driver.driver, AZTECH_MAX); } static void __exit aztech_exit(void) { - struct aztech *az = &aztech_card; - - video_unregister_device(&az->vdev); - v4l2_device_unregister(&az->v4l2_dev); - release_region(az->io, 2); + isa_unregister_driver(&aztech_driver.driver); } module_init(aztech_init); -- 2.7.4