diff options
author | Antti Palosaari <crope@iki.fi> | 2014-07-22 10:29:57 +0200 |
---|---|---|
committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-22 16:34:57 +0200 |
commit | 8591f708045d8d706adebeaf03e667aa58ccf6ea (patch) | |
tree | 9730fbe855f5442698aa5ec9b2c1c1eaa5762503 /drivers/media/usb/msi2500 | |
parent | [media] msi2500: correct style issues (diff) | |
download | linux-8591f708045d8d706adebeaf03e667aa58ccf6ea.tar.xz linux-8591f708045d8d706adebeaf03e667aa58ccf6ea.zip |
[media] msi2500: refactor USB stream copying
There was a lot of duplicated functionality between different
stream format handling. Refactor functionality in order to get
rid of duplicated code.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/usb/msi2500')
-rw-r--r-- | drivers/media/usb/msi2500/msi2500.c | 437 |
1 files changed, 103 insertions, 334 deletions
diff --git a/drivers/media/usb/msi2500/msi2500.c b/drivers/media/usb/msi2500/msi2500.c index 755f959215fe..5bce38e9fcc2 100644 --- a/drivers/media/usb/msi2500/msi2500.c +++ b/drivers/media/usb/msi2500/msi2500.c @@ -146,8 +146,6 @@ struct msi3101_state { unsigned int vb_full; /* vb is full and packets dropped */ struct urb *urbs[MAX_ISO_BUFS]; - int (*convert_stream)(struct msi3101_state *s, u8 *dst, u8 *src, - unsigned int src_len); /* Controls */ struct v4l2_ctrl_handler hdl; @@ -188,118 +186,8 @@ leave: * +--------------------------------------------------------------------------- * signed 8-bit sample * 504 * 2 = 1008 samples - */ -static int msi3101_convert_stream_504(struct msi3101_state *s, u8 *dst, - u8 *src, unsigned int src_len) -{ - int i, i_max, dst_len = 0; - u32 sample_num[3]; - - /* There could be 1-3 1024 bytes URB frames */ - i_max = src_len / 1024; - - for (i = 0; i < i_max; i++) { - sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; - if (i == 0 && s->next_sample != sample_num[0]) { - dev_dbg_ratelimited(&s->udev->dev, - "%d samples lost, %d %08x:%08x\n", - sample_num[0] - s->next_sample, - src_len, s->next_sample, sample_num[0]); - } - - /* - * Dump all unknown 'garbage' data - maybe we will discover - * someday if there is something rational... - */ - dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); - - /* 504 x I+Q samples */ - src += 16; - memcpy(dst, src, 1008); - src += 1008; - dst += 1008; - dst_len += 1008; - } - - /* calculate samping rate and output it in 10 seconds intervals */ - 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_next); - unsigned int samples = sample_num[i_max - 1] - s->sample; - - 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", - src_len, samples, msecs, - samples * 1000UL / msecs); - } - - /* next sample (sample = sample + i * 504) */ - s->next_sample = sample_num[i_max - 1] + 504; - - return dst_len; -} - -static int msi3101_convert_stream_504_u8(struct msi3101_state *s, u8 *dst, - u8 *src, unsigned int src_len) -{ - int i, j, i_max, dst_len = 0; - u32 sample_num[3]; - s8 *s8src; - u8 *u8dst; - - /* There could be 1-3 1024 bytes URB frames */ - i_max = src_len / 1024; - u8dst = (u8 *) dst; - - for (i = 0; i < i_max; i++) { - sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; - if (i == 0 && s->next_sample != sample_num[0]) { - dev_dbg_ratelimited(&s->udev->dev, - "%d samples lost, %d %08x:%08x\n", - sample_num[0] - s->next_sample, - src_len, s->next_sample, sample_num[0]); - } - - /* - * Dump all unknown 'garbage' data - maybe we will discover - * someday if there is something rational... - */ - dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); - - /* 504 x I+Q samples */ - src += 16; - - s8src = (s8 *) src; - for (j = 0; j < 1008; j++) - *u8dst++ = *s8src++ + 128; - - src += 1008; - dst += 1008; - dst_len += 1008; - } - - /* calculate samping rate and output it in 10 seconds intervals */ - if (unlikely(time_is_before_jiffies(s->jiffies_next))) { -#define MSECS 10000UL - unsigned int samples = sample_num[i_max - 1] - s->sample; - - s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); - s->sample = sample_num[i_max - 1]; - dev_dbg(&s->udev->dev, - "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", - src_len, samples, MSECS, - samples * 1000UL / MSECS); - } - - /* next sample (sample = sample + i * 504) */ - s->next_sample = sample_num[i_max - 1] + 504; - - return dst_len; -} - -/* + * + * * +=========================================================================== * | 00-1023 | USB packet type '384' * +=========================================================================== @@ -342,62 +230,8 @@ static int msi3101_convert_stream_504_u8(struct msi3101_state *s, u8 *dst, * Number 2 (0b10) was never seen. * * 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes - */ -static int msi3101_convert_stream_384(struct msi3101_state *s, u8 *dst, - u8 *src, unsigned int src_len) -{ - int i, i_max, dst_len = 0; - u32 sample_num[3]; - - /* There could be 1-3 1024 bytes URB frames */ - i_max = src_len / 1024; - for (i = 0; i < i_max; i++) { - sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; - if (i == 0 && s->next_sample != sample_num[0]) { - dev_dbg_ratelimited(&s->udev->dev, - "%d samples lost, %d %08x:%08x\n", - sample_num[0] - s->next_sample, - src_len, s->next_sample, sample_num[0]); - } - - /* - * Dump all unknown 'garbage' data - maybe we will discover - * someday if there is something rational... - */ - dev_dbg_ratelimited(&s->udev->dev, - "%*ph %*ph\n", 12, &src[4], 24, &src[1000]); - - /* 384 x I+Q samples */ - src += 16; - memcpy(dst, src, 984); - src += 984 + 24; - dst += 984; - dst_len += 984; - } - - /* calculate samping rate and output it in 10 seconds intervals */ - 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_next); - unsigned int samples = sample_num[i_max - 1] - s->sample; - - 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", - src_len, samples, msecs, - samples * 1000UL / msecs, - s->sample_ctrl_bit[0], s->sample_ctrl_bit[1], - s->sample_ctrl_bit[2], s->sample_ctrl_bit[3]); - } - - /* next sample (sample = sample + i * 384) */ - s->next_sample = sample_num[i_max - 1] + 384; - - return dst_len; -} - -/* + * + * * +=========================================================================== * | 00-1023 | USB packet type '336' * +=========================================================================== @@ -408,60 +242,8 @@ static int msi3101_convert_stream_384(struct msi3101_state *s, u8 *dst, * | 16-1023 | samples * +--------------------------------------------------------------------------- * signed 12-bit sample - */ -static int msi3101_convert_stream_336(struct msi3101_state *s, u8 *dst, - u8 *src, unsigned int src_len) -{ - int i, i_max, dst_len = 0; - u32 sample_num[3]; - - /* There could be 1-3 1024 bytes URB frames */ - i_max = src_len / 1024; - - for (i = 0; i < i_max; i++) { - sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; - if (i == 0 && s->next_sample != sample_num[0]) { - dev_dbg_ratelimited(&s->udev->dev, - "%d samples lost, %d %08x:%08x\n", - sample_num[0] - s->next_sample, - src_len, s->next_sample, sample_num[0]); - } - - /* - * Dump all unknown 'garbage' data - maybe we will discover - * someday if there is something rational... - */ - dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); - - /* 336 x I+Q samples */ - src += 16; - memcpy(dst, src, 1008); - src += 1008; - dst += 1008; - dst_len += 1008; - } - - /* calculate samping rate and output it in 10 seconds intervals */ - 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_next); - unsigned int samples = sample_num[i_max - 1] - s->sample; - - 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", - src_len, samples, msecs, - samples * 1000UL / msecs); - } - - /* next sample (sample = sample + i * 336) */ - s->next_sample = sample_num[i_max - 1] + 336; - - return dst_len; -} - -/* + * + * * +=========================================================================== * | 00-1023 | USB packet type '252' * +=========================================================================== @@ -473,76 +255,24 @@ static int msi3101_convert_stream_336(struct msi3101_state *s, u8 *dst, * +--------------------------------------------------------------------------- * signed 14-bit sample */ -static int msi3101_convert_stream_252(struct msi3101_state *s, u8 *dst, - u8 *src, unsigned int src_len) -{ - int i, i_max, dst_len = 0; - u32 sample_num[3]; - - /* There could be 1-3 1024 bytes URB frames */ - i_max = src_len / 1024; - for (i = 0; i < i_max; i++) { - sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; - if (i == 0 && s->next_sample != sample_num[0]) { - dev_dbg_ratelimited(&s->udev->dev, - "%d samples lost, %d %08x:%08x\n", - sample_num[0] - s->next_sample, - src_len, s->next_sample, sample_num[0]); - } - - /* - * Dump all unknown 'garbage' data - maybe we will discover - * someday if there is something rational... - */ - dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); - - /* 252 x I+Q samples */ - src += 16; - memcpy(dst, src, 1008); - src += 1008; - dst += 1008; - dst_len += 1008; - } - - /* calculate samping rate and output it in 10 seconds intervals */ - 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_next); - unsigned int samples = sample_num[i_max - 1] - s->sample; - - 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", - src_len, samples, msecs, - samples * 1000UL / msecs); - } - - /* next sample (sample = sample + i * 252) */ - s->next_sample = sample_num[i_max - 1] + 252; - - return dst_len; -} - -static int msi3101_convert_stream_252_u16(struct msi3101_state *s, u8 *dst, - u8 *src, unsigned int src_len) +static int msi3101_convert_stream(struct msi3101_state *s, u8 *dst, u8 *src, + unsigned int src_len) { - int i, j, i_max, dst_len = 0; - u32 sample_num[3]; - u16 *u16dst = (u16 *) dst; - struct {signed int x:14; } se; + unsigned int i, j, transactions, dst_len = 0; + u32 sample[3]; - /* There could be 1-3 1024 bytes URB frames */ - i_max = src_len / 1024; + /* There could be 1-3 1024 byte transactions per packet */ + transactions = src_len / 1024; - for (i = 0; i < i_max; i++) { - sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; - if (i == 0 && s->next_sample != sample_num[0]) { + for (i = 0; i < transactions; i++) { + sample[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | + src[0] << 0; + if (i == 0 && s->next_sample != sample[0]) { dev_dbg_ratelimited(&s->udev->dev, "%d samples lost, %d %08x:%08x\n", - sample_num[0] - s->next_sample, - src_len, s->next_sample, sample_num[0]); + sample[0] - s->next_sample, + src_len, s->next_sample, sample[0]); } /* @@ -551,50 +281,96 @@ static int msi3101_convert_stream_252_u16(struct msi3101_state *s, u8 *dst, */ dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); - /* 252 x I+Q samples */ - src += 16; - - for (j = 0; j < 1008; j += 4) { - unsigned int usample[2]; - int ssample[2]; + src += 16; /* skip header */ - usample[0] = src[j + 0] >> 0 | src[j + 1] << 8; - usample[1] = src[j + 2] >> 0 | src[j + 3] << 8; + switch (s->pixelformat) { + case V4L2_SDR_FMT_CU8: /* 504 x IQ samples */ + { + s8 *s8src = (s8 *) src; + u8 *u8dst = (u8 *) dst; - /* sign extension from 14-bit to signed int */ - ssample[0] = se.x = usample[0]; - ssample[1] = se.x = usample[1]; + for (j = 0; j < 1008; j++) + *u8dst++ = *s8src++ + 128; - /* from signed to unsigned */ - usample[0] = ssample[0] + 8192; - usample[1] = ssample[1] + 8192; - - /* from 14-bit to 16-bit */ - *u16dst++ = (usample[0] << 2) | (usample[0] >> 12); - *u16dst++ = (usample[1] << 2) | (usample[1] >> 12); + src += 1008; + dst += 1008; + dst_len += 1008; + s->next_sample = sample[i] + 504; + break; } + case V4L2_SDR_FMT_CU16LE: /* 252 x IQ samples */ + { + s16 *s16src = (s16 *) src; + u16 *u16dst = (u16 *) dst; + struct {signed int x:14; } se; /* sign extension */ + unsigned int utmp; + + for (j = 0; j < 1008; j += 2) { + /* sign extension from 14-bit to signed int */ + se.x = *s16src++; + /* from signed int to unsigned int */ + utmp = se.x + 8192; + /* from 14-bit to 16-bit */ + *u16dst++ = utmp << 2 | utmp >> 12; + } - src += 1008; - dst += 1008; - dst_len += 1008; + src += 1008; + dst += 1008; + dst_len += 1008; + s->next_sample = sample[i] + 252; + break; + } + case MSI2500_PIX_FMT_SDR_MSI2500_384: /* 384 x IQ samples */ + /* Dump unknown 'garbage' data */ + dev_dbg_ratelimited(&s->udev->dev, + "%*ph\n", 24, &src[1000]); + memcpy(dst, src, 984); + src += 984 + 24; + dst += 984; + dst_len += 984; + s->next_sample = sample[i] + 384; + break; + case V4L2_SDR_FMT_CS8: /* 504 x IQ samples */ + memcpy(dst, src, 1008); + src += 1008; + dst += 1008; + dst_len += 1008; + s->next_sample = sample[i] + 504; + break; + case MSI2500_PIX_FMT_SDR_S12: /* 336 x IQ samples */ + memcpy(dst, src, 1008); + src += 1008; + dst += 1008; + dst_len += 1008; + s->next_sample = sample[i] + 336; + break; + case V4L2_SDR_FMT_CS14LE: /* 252 x IQ samples */ + memcpy(dst, src, 1008); + src += 1008; + dst += 1008; + dst_len += 1008; + s->next_sample = sample[i] + 252; + break; + default: + break; + } } - /* calculate samping rate and output it in 10 seconds intervals */ + /* calculate sample rate and output it in 10 seconds intervals */ if (unlikely(time_is_before_jiffies(s->jiffies_next))) { -#define MSECS 10000UL - unsigned int samples = sample_num[i_max - 1] - s->sample; + #define MSECS 10000UL + unsigned int msecs = jiffies_to_msecs(jiffies - + s->jiffies_next + msecs_to_jiffies(MSECS)); + unsigned int samples = s->next_sample - s->sample; s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); - s->sample = sample_num[i_max - 1]; + s->sample = s->next_sample; dev_dbg(&s->udev->dev, - "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", - src_len, samples, MSECS, - samples * 1000UL / MSECS); + "size=%u samples=%u msecs=%u sample rate=%lu\n", + src_len, samples, msecs, + samples * 1000UL / msecs); } - /* next sample (sample = sample + i * 252) */ - s->next_sample = sample_num[i_max - 1] + 252; - return dst_len; } @@ -662,7 +438,7 @@ static void msi3101_isoc_handler(struct urb *urb) /* fill framebuffer */ ptr = vb2_plane_vaddr(&fbuf->vb, 0); - flen = s->convert_stream(s, ptr, iso_buf, flen); + flen = msi3101_convert_stream(s, ptr, iso_buf, flen); vb2_set_plane_payload(&fbuf->vb, 0, flen); vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); } @@ -945,32 +721,25 @@ static int msi3101_set_usb_adc(struct msi3101_state *s) /* select stream format */ switch (s->pixelformat) { case V4L2_SDR_FMT_CU8: - s->convert_stream = msi3101_convert_stream_504_u8; - reg7 = 0x000c9407; + reg7 = 0x000c9407; /* 504 */ break; case V4L2_SDR_FMT_CU16LE: - s->convert_stream = msi3101_convert_stream_252_u16; - reg7 = 0x00009407; + reg7 = 0x00009407; /* 252 */ break; case V4L2_SDR_FMT_CS8: - s->convert_stream = msi3101_convert_stream_504; - reg7 = 0x000c9407; + reg7 = 0x000c9407; /* 504 */ break; case MSI2500_PIX_FMT_SDR_MSI2500_384: - s->convert_stream = msi3101_convert_stream_384; - reg7 = 0x0000a507; + reg7 = 0x0000a507; /* 384 */ break; case MSI2500_PIX_FMT_SDR_S12: - s->convert_stream = msi3101_convert_stream_336; - reg7 = 0x00008507; + reg7 = 0x00008507; /* 336 */ break; case V4L2_SDR_FMT_CS14LE: - s->convert_stream = msi3101_convert_stream_252; - reg7 = 0x00009407; + reg7 = 0x00009407; /* 252 */ break; default: - s->convert_stream = msi3101_convert_stream_504_u8; - reg7 = 0x000c9407; + reg7 = 0x000c9407; /* 504 */ break; } |