* remove unneeded controls * rename things * remove unneeded callbacks * use likely/unlikely on hot paths * use 1Hz resolution for tuner RF frequency
Signed-off-by: Antti Palosaari <cr...@iki.fi> --- drivers/staging/media/msi3101/sdr-msi3101.c | 214 +++++++--------------------- 1 file changed, 55 insertions(+), 159 deletions(-) diff --git a/drivers/staging/media/msi3101/sdr-msi3101.c b/drivers/staging/media/msi3101/sdr-msi3101.c index 41894c1..24dfd79 100644 --- a/drivers/staging/media/msi3101/sdr-msi3101.c +++ b/drivers/staging/media/msi3101/sdr-msi3101.c @@ -21,20 +21,6 @@ * (C) 1999-2004 Nemosoft Unv. * (C) 2004-2006 Luc Saillard (l...@saillard.org) * (C) 2011 Hans de Goede <hdego...@redhat.com> - * - * Development tree of that driver will be on: - * http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/mirics - * - * GNU Radio plugin "gr-kernel" for device usage will be on: - * http://git.linuxtv.org/anttip/gr-kernel.git - * - * TODO: - * Help is very highly welcome for these + all the others you could imagine: - * - split USB ADC interface and RF tuner to own drivers (msi2500 and msi001) - * - move controls to V4L2 API - * - use libv4l2 for stream format conversions - * - gr-kernel: switch to v4l2_mmap (current read eats a lot of cpu) - * - SDRSharp support */ #include <linux/module.h> @@ -377,12 +363,7 @@ static const struct msi3101_gain msi3101_gain_lut_1000[] = { #define MAX_ISOC_ERRORS 20 /* TODO: These should be moved to V4L2 API */ -#define MSI3101_CID_SAMPLING_MODE ((V4L2_CID_USER_BASE | 0xf000) + 0) -#define MSI3101_CID_SAMPLING_RATE ((V4L2_CID_USER_BASE | 0xf000) + 1) -#define MSI3101_CID_SAMPLING_RESOLUTION ((V4L2_CID_USER_BASE | 0xf000) + 2) -#define MSI3101_CID_TUNER_RF ((V4L2_CID_USER_BASE | 0xf000) + 10) #define MSI3101_CID_TUNER_BW ((V4L2_CID_USER_BASE | 0xf000) + 11) -#define MSI3101_CID_TUNER_IF ((V4L2_CID_USER_BASE | 0xf000) + 12) #define MSI3101_CID_TUNER_GAIN ((V4L2_CID_USER_BASE | 0xf000) + 13) #define V4L2_PIX_FMT_SDR_U8 v4l2_fourcc('D', 'U', '0', '8') /* unsigned 8-bit */ @@ -408,16 +389,16 @@ static const struct v4l2_frequency_band bands_rf[] = { .tuner = 1, .type = V4L2_TUNER_RF, .index = 0, - .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS, - .rangelow = 49000000 / 62.5, - .rangehigh = 263000000 / 62.5, + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 49000000, + .rangehigh = 263000000, }, { .tuner = 1, .type = V4L2_TUNER_RF, .index = 1, - .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS, - .rangelow = 390000000 / 62.5, - .rangehigh = 960000000 / 62.5, + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 390000000, + .rangehigh = 960000000, }, }; @@ -430,27 +411,27 @@ struct msi3101_format { /* format descriptions for capture and preview */ static struct msi3101_format formats[] = { { - .name = "I/Q 8-bit unsigned", + .name = "8-bit unsigned", .pixelformat = V4L2_PIX_FMT_SDR_U8, }, { - .name = "I/Q 16-bit unsigned little endian", + .name = "16-bit unsigned little endian", .pixelformat = V4L2_PIX_FMT_SDR_U16LE, }, { - .name = "I/Q 8-bit signed", + .name = "8-bit signed", .pixelformat = V4L2_PIX_FMT_SDR_S8, }, { - .name = "I/Q 10+2-bit signed", + .name = "10+2-bit signed", .pixelformat = V4L2_PIX_FMT_SDR_MSI2500_384, }, { - .name = "I/Q 12-bit signed", + .name = "12-bit signed", .pixelformat = V4L2_PIX_FMT_SDR_S12, }, { - .name = "I/Q 14-bit signed", + .name = "14-bit signed", .pixelformat = V4L2_PIX_FMT_SDR_S14, }, }; -static const int NUM_FORMATS = sizeof(formats) / sizeof(struct msi3101_format); +static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); /* intermediate buffers with raw data from the USB device */ struct msi3101_frame_buf { @@ -486,15 +467,11 @@ struct msi3101_state { /* Controls */ struct v4l2_ctrl_handler ctrl_handler; - struct v4l2_ctrl *ctrl_sampling_rate; - struct v4l2_ctrl *ctrl_tuner_rf; struct v4l2_ctrl *ctrl_tuner_bw; - struct v4l2_ctrl *ctrl_tuner_if; struct v4l2_ctrl *ctrl_tuner_gain; u32 next_sample; /* for track lost packets */ u32 sample; /* for sample rate calc */ - unsigned long jiffies; unsigned long jiffies_next; unsigned int sample_ctrl_bit[4]; }; @@ -563,11 +540,11 @@ static int msi3101_convert_stream_504(struct msi3101_state *s, u8 *dst, } /* calculate samping rate and output it in 10 seconds intervals */ - if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { + if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { unsigned long jiffies_now = jiffies; - unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); + unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); unsigned int samples = sample_num[i_max - 1] - s->sample; - s->jiffies = jiffies_now; + s->jiffies_next = jiffies_now; s->sample = sample_num[i_max - 1]; dev_dbg(&s->udev->dev, "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", @@ -715,11 +692,11 @@ static int msi3101_convert_stream_384(struct msi3101_state *s, u8 *dst, } /* calculate samping rate and output it in 10 seconds intervals */ - if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { + if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { unsigned long jiffies_now = jiffies; - unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); + unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); unsigned int samples = sample_num[i_max - 1] - s->sample; - s->jiffies = jiffies_now; + s->jiffies_next = jiffies_now; s->sample = sample_num[i_max - 1]; dev_dbg(&s->udev->dev, "slen=%d samples=%u msecs=%lu sampling rate=%lu bits=%d.%d.%d.%d\n", @@ -780,11 +757,11 @@ static int msi3101_convert_stream_336(struct msi3101_state *s, u8 *dst, } /* calculate samping rate and output it in 10 seconds intervals */ - if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { + if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { unsigned long jiffies_now = jiffies; - unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); + unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); unsigned int samples = sample_num[i_max - 1] - s->sample; - s->jiffies = jiffies_now; + s->jiffies_next = jiffies_now; s->sample = sample_num[i_max - 1]; dev_dbg(&s->udev->dev, "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", @@ -843,11 +820,11 @@ static int msi3101_convert_stream_252(struct msi3101_state *s, u8 *dst, } /* calculate samping rate and output it in 10 seconds intervals */ - if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { + if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { unsigned long jiffies_now = jiffies; - unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); + unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); unsigned int samples = sample_num[i_max - 1] - s->sample; - s->jiffies = jiffies_now; + s->jiffies_next = jiffies_now; s->sample = sample_num[i_max - 1]; dev_dbg(&s->udev->dev, "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", @@ -944,14 +921,14 @@ static void msi3101_isoc_handler(struct urb *urb) unsigned char *iso_buf = NULL; struct msi3101_frame_buf *fbuf; - if (urb->status == -ENOENT || urb->status == -ECONNRESET || - urb->status == -ESHUTDOWN) { + if (unlikely(urb->status == -ENOENT || urb->status == -ECONNRESET || + urb->status == -ESHUTDOWN)) { dev_dbg(&s->udev->dev, "URB (%p) unlinked %ssynchronuously\n", urb, urb->status == -ENOENT ? "" : "a"); return; } - if (urb->status != 0) { + if (unlikely(urb->status != 0)) { dev_dbg(&s->udev->dev, "msi3101_isoc_handler() called with status %d\n", urb->status); @@ -971,28 +948,28 @@ static void msi3101_isoc_handler(struct urb *urb) /* Check frame error */ fstatus = urb->iso_frame_desc[i].status; - if (fstatus) { + if (unlikely(fstatus)) { dev_dbg_ratelimited(&s->udev->dev, "frame=%d/%d has error %d skipping\n", i, urb->number_of_packets, fstatus); - goto skip; + continue; } /* Check if that frame contains data */ flen = urb->iso_frame_desc[i].actual_length; - if (flen == 0) - goto skip; + if (unlikely(flen == 0)) + continue; iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; /* Get free framebuffer */ fbuf = msi3101_get_next_fill_buf(s); - if (fbuf == NULL) { + if (unlikely(fbuf == NULL)) { s->vb_full++; dev_dbg_ratelimited(&s->udev->dev, "videobuf is full, %d packets dropped\n", s->vb_full); - goto skip; + continue; } /* fill framebuffer */ @@ -1000,13 +977,11 @@ static void msi3101_isoc_handler(struct urb *urb) flen = s->convert_stream(s, ptr, iso_buf, flen); vb2_set_plane_payload(&fbuf->vb, 0, flen); vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); -skip: - ; } handler_end: i = usb_submit_urb(urb, GFP_ATOMIC); - if (i != 0) + if (unlikely(i != 0)) dev_dbg(&s->udev->dev, "Error (%d) re-submitting urb in msi3101_isoc_handler\n", i); @@ -1069,7 +1044,7 @@ static int msi3101_isoc_init(struct msi3101_state *s) udev = s->udev; ret = usb_set_interface(s->udev, 0, 1); - if (ret < 0) + if (ret) return ret; /* Allocate and init Isochronuous urbs */ @@ -1202,17 +1177,6 @@ static int msi3101_queue_setup(struct vb2_queue *vq, return 0; } -static int msi3101_buf_prepare(struct vb2_buffer *vb) -{ - struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); - - /* Don't allow queing new buffers after device disconnection */ - if (!s->udev) - return -ENODEV; - - return 0; -} - static void msi3101_buf_queue(struct vb2_buffer *vb) { struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); @@ -1221,7 +1185,7 @@ static void msi3101_buf_queue(struct vb2_buffer *vb) unsigned long flags = 0; /* Check the device has not disconnected between prep and queuing */ - if (!s->udev) { + if (unlikely(!s->udev)) { vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); return; } @@ -1280,7 +1244,7 @@ static int msi3101_set_usb_adc(struct msi3101_state *s) int ret, div_n, div_m, div_r_out, f_sr, f_vco, fract; u32 reg3, reg4, reg7; - f_sr = s->ctrl_sampling_rate->val64; + f_sr = s->f_adc; /* select stream format */ if (f_sr < 6000000) { @@ -1455,7 +1419,7 @@ static int msi3101_set_tuner(struct msi3101_state *s) {8000000, 0x07}, /* 8 MHz */ }; - unsigned int f_rf = s->ctrl_tuner_rf->val64; + unsigned int f_rf = s->f_tuner; /* * bandwidth (Hz) @@ -1467,7 +1431,7 @@ static int msi3101_set_tuner(struct msi3101_state *s) * intermediate frequency (Hz) * 0, 450000, 1620000, 2048000 */ - unsigned int f_if = s->ctrl_tuner_if->val; + unsigned int f_if = 0; /* * gain reduction (dB) @@ -1680,7 +1644,6 @@ static int msi3101_stop_streaming(struct vb2_queue *vq) static struct vb2_ops msi3101_vb2_ops = { .queue_setup = msi3101_queue_setup, - .buf_prepare = msi3101_buf_prepare, .buf_queue = msi3101_buf_queue, .start_streaming = msi3101_start_streaming, .stop_streaming = msi3101_stop_streaming, @@ -1811,9 +1774,9 @@ static int msi3101_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) } else if (v->index == 1) { strlcpy(v->name, "RF: Mirics MSi001", sizeof(v->name)); v->type = V4L2_TUNER_RF; - v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS; - v->rangelow = 49000000 / 62.5; - v->rangehigh = 960000000 / 62.5; + v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; + v->rangelow = 49000000; + v->rangehigh = 960000000; } else { return -EINVAL; } @@ -1848,17 +1811,15 @@ static int msi3101_s_frequency(struct file *file, void *priv, __func__, f->tuner, f->type, f->frequency); if (f->tuner == 0) { - dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n", - __func__, f->frequency); s->f_adc = f->frequency; - ret = v4l2_ctrl_s_ctrl_int64(s->ctrl_sampling_rate, - f->frequency); + dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n", + __func__, s->f_adc); + ret = msi3101_set_usb_adc(s); } else if (f->tuner == 1) { - dev_dbg(&s->udev->dev, "%s: RF frequency=%lu Hz\n", - __func__, f->frequency * 625UL / 10UL); s->f_tuner = f->frequency; - ret = v4l2_ctrl_s_ctrl_int64(s->ctrl_tuner_rf, - f->frequency * 625UL / 10UL); + dev_dbg(&s->udev->dev, "%s: RF frequency=%u Hz\n", + __func__, f->frequency); + ret = msi3101_set_tuner(s); } else { return -EINVAL; } @@ -1939,6 +1900,7 @@ static struct video_device msi3101_template = { .release = video_device_release_empty, .fops = &msi3101_fops, .ioctl_ops = &msi3101_ioctl_ops, + .debug = 0, }; static int msi3101_s_ctrl(struct v4l2_ctrl *ctrl) @@ -1953,14 +1915,7 @@ static int msi3101_s_ctrl(struct v4l2_ctrl *ctrl) ctrl->minimum, ctrl->maximum, ctrl->step); switch (ctrl->id) { - case MSI3101_CID_SAMPLING_MODE: - case MSI3101_CID_SAMPLING_RATE: - case MSI3101_CID_SAMPLING_RESOLUTION: - ret = 0; - break; - case MSI3101_CID_TUNER_RF: case MSI3101_CID_TUNER_BW: - case MSI3101_CID_TUNER_IF: case MSI3101_CID_TUNER_GAIN: ret = msi3101_set_tuner(s); break; @@ -1991,70 +1946,16 @@ static int msi3101_probe(struct usb_interface *intf, struct usb_device *udev = interface_to_usbdev(intf); struct msi3101_state *s = NULL; int ret; - static const char * const ctrl_sampling_mode_qmenu_strings[] = { - "Quadrature Sampling", - NULL, - }; - static const struct v4l2_ctrl_config ctrl_sampling_mode = { - .ops = &msi3101_ctrl_ops, - .id = MSI3101_CID_SAMPLING_MODE, - .type = V4L2_CTRL_TYPE_MENU, - .flags = V4L2_CTRL_FLAG_INACTIVE, - .name = "Sampling Mode", - .qmenu = ctrl_sampling_mode_qmenu_strings, - }; - static const struct v4l2_ctrl_config ctrl_sampling_rate = { - .ops = &msi3101_ctrl_ops, - .id = MSI3101_CID_SAMPLING_RATE, - .type = V4L2_CTRL_TYPE_INTEGER64, - .name = "Sampling Rate", - .min = 500000, - .max = 12000000, - .def = 2048000, - .step = 1, - }; - static const struct v4l2_ctrl_config ctrl_sampling_resolution = { - .ops = &msi3101_ctrl_ops, - .id = MSI3101_CID_SAMPLING_RESOLUTION, - .type = V4L2_CTRL_TYPE_INTEGER, - .flags = V4L2_CTRL_FLAG_INACTIVE, - .name = "Sampling Resolution", - .min = 10, - .max = 10, - .def = 10, - .step = 1, - }; - static const struct v4l2_ctrl_config ctrl_tuner_rf = { - .ops = &msi3101_ctrl_ops, - .id = MSI3101_CID_TUNER_RF, - .type = V4L2_CTRL_TYPE_INTEGER64, - .name = "Tuner RF", - .min = 40000000, - .max = 2000000000, - .def = 100000000, - .step = 1, - }; static const struct v4l2_ctrl_config ctrl_tuner_bw = { .ops = &msi3101_ctrl_ops, .id = MSI3101_CID_TUNER_BW, .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Tuner BW", + .name = "Tuner Bandwidth", .min = 200000, .max = 8000000, .def = 600000, .step = 1, }; - static const struct v4l2_ctrl_config ctrl_tuner_if = { - .ops = &msi3101_ctrl_ops, - .id = MSI3101_CID_TUNER_IF, - .type = V4L2_CTRL_TYPE_INTEGER, - .flags = V4L2_CTRL_FLAG_INACTIVE, - .name = "Tuner IF", - .min = 0, - .max = 2048000, - .def = 0, - .step = 1, - }; static const struct v4l2_ctrl_config ctrl_tuner_gain = { .ops = &msi3101_ctrl_ops, .id = MSI3101_CID_TUNER_GAIN, @@ -2062,7 +1963,7 @@ static int msi3101_probe(struct usb_interface *intf, .name = "Tuner Gain", .min = 0, .max = 102, - .def = 0, + .def = 50, .step = 1, }; @@ -2088,7 +1989,7 @@ static int msi3101_probe(struct usb_interface *intf, s->vb_queue.mem_ops = &vb2_vmalloc_memops; s->vb_queue.timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; ret = vb2_queue_init(&s->vb_queue); - if (ret < 0) { + if (ret) { dev_err(&s->udev->dev, "Could not initialize vb2 queue\n"); goto err_free_mem; } @@ -2101,13 +2002,8 @@ static int msi3101_probe(struct usb_interface *intf, video_set_drvdata(&s->vdev, s); /* Register controls */ - v4l2_ctrl_handler_init(&s->ctrl_handler, 7); - v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_mode, NULL); - s->ctrl_sampling_rate = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_rate, NULL); - v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_resolution, NULL); - s->ctrl_tuner_rf = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_rf, NULL); + v4l2_ctrl_handler_init(&s->ctrl_handler, 2); s->ctrl_tuner_bw = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_bw, NULL); - s->ctrl_tuner_if = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_if, NULL); s->ctrl_tuner_gain = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_gain, NULL); if (s->ctrl_handler.error) { ret = s->ctrl_handler.error; @@ -2129,7 +2025,7 @@ static int msi3101_probe(struct usb_interface *intf, s->vdev.lock = &s->v4l2_lock; ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1); - if (ret < 0) { + if (ret) { dev_err(&s->udev->dev, "Failed to register as video device (%d)\n", ret); -- 1.8.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
