- 19 Dec, 2013 27 commits
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Antti Palosaari authored
Adapter is locked by I2C core already. Use unlocked i2c_transfer() version __i2c_transfer() to avoid deadlock. Signed-off-by:
Antti Palosaari <crope@iki.fi> Signed-off-by:
Mauro Carvalho Chehab <m.chehab@samsung.com>
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Antti Palosaari authored
Convert driver from proprietary DVB driver model to standard I2C driver model. Signed-off-by:
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Antti Palosaari authored
Write inittab using reg address auto-increment in order to reduce I/O a little bit. Signed-off-by:
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Antti Palosaari authored
Reg 0x56 should be programmed to 0x01. Add default to inittab. Reported-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Antti Palosaari authored
Optimal AGC is highly depended on used RF tuner and due to that it is already included to chip configuration. However, inittab has default AGC value, which was later replaced by one from config. Add also comment to all chip configuration options about default values and if those are needed to set or not. Reported-by:
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Antti Palosaari authored
Used synthesizer is very typical integer-N PLL, with configurable reference frequency divider, output frequency divider and of course N itself. Most common method to calculate values is first select output divider, then calculate VCO frequency and finally calculate PLL N from VCO frequency. Do it that way. Also make some cleanups for filter logic and signal strength. Signed-off-by:
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Antti Palosaari authored
TS mode was configured wrongly. Reported-by:
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Antti Palosaari authored
DIV_ROUND_CLOSEST does the job and looks better. Signed-off-by:
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Antti Palosaari authored
Switch standard I2C adapter to muxed I2C adapter. David reported that I2C adapter implementation caused deadlock. I discussed with Jean and he suggested to implement it as a multiplexed i2c adapter because tuner I2C bus could be seen like own I2C segment. Reported-by:
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Antti Palosaari authored
I2C transfer were using dynamic stack allocation. Get rid of it. Signed-off-by:
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Antti Palosaari authored
I2C transfer were using dynamic stack allocation. Get rid of it. Signed-off-by:
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Antti Palosaari authored
It is Montage M88TS2022 DVB-S/S2 silicon tuner driver. Signed-off-by:
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Antti Palosaari authored
It is Montage M88DS3103 DVB-S/S2 demodulator driver. Signed-off-by:
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Antti Palosaari authored
Device has following chips: Empia EM28178, Montage M88DS3103, Montage M88TS2022, Allegro A8293. Signed-off-by:
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Antti Palosaari authored
M88TS2022 is DVB-S/S2 RF tuner used usually in conjunction with Montage M88DS3103 DVB-S/S2 demodulator. Signed-off-by:
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Antti Palosaari authored
DVB-S/S2 satellite television demodulator driver. Signed-off-by:
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Mauro Carvalho Chehab authored
PER/UCB statistics are collected once on each 1 second. However, it doesn't provide the total number of packets needed to calculate PER. Yet, as we know the bit rate, it is possible to estimate such number. So, do it. Signed-off-by:
Patrick Boettcher <pboettcher@kernellabs.com>
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Mauro Carvalho Chehab authored
On dib8000, the BER statistics are updated on every 1.25e6 bits. Adjust the code to only update the statistics after having it done. Signed-off-by:
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Mauro Carvalho Chehab authored
On dib8000, the block error count is a monotonic 32 bits register. With DVBv5 stats, we use a 64 bits counter, that it is reset when a new channel is tuned. Change the UCB counting start from 0 and to be returned with 64 bits, just like the API requests. Signed-off-by:
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Mauro Carvalho Chehab authored
Use multiple linear segments to better interpolate the dBm for the signal strength. The table that converts from linear strength to dB was empirically determinated with the help of a signal generator (DTA-2111). The entries from -35dBm to -22.5dBm were taken using just the signal generator and the board. For the entries from -36dBm to -51dBm, a 16 dB tap was used, in order to extend its range. Signals below to -51dBm are just linearly interpolated. Signed-off-by:
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Mauro Carvalho Chehab authored
Better to have Signal strength in dB. This takes a very rough estimation for the signal strength, that was calibrated using a Dektec DTA-2111 Gold RF generator and a Pixelview dib8076 stick. It estimates the signal strength using a linear equation where: - the max is -22.5 dBm, with returns 55953 - the min is -35.0 dBm, with returns 50110 With -22dBm, the signal strengh is returned as 65535. Unfortunately, the min strength generated with DTA-2111 is -35dBm. It should be noticed that approximating it by a linear equation is not right. I should probably be splitting it into 0.5 dB linear segments, in order to get a higher precision, just like it is done on mb86a20s, but that would force me to add some attenuators, in order to get dB levels below -35dBm, which is, btw, strong enough to get signal lock. Signed-off-by:
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Mauro Carvalho Chehab authored
The advantage of DVBv5 stats is that it allows adding proper scales to all measures. use it for this frontend. This patch adds a basic set of stats, basically cloning what's already provided by DVBv3 API. Latter patches will improve it. Signed-off-by:
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Mauro Carvalho Chehab authored
On ISDB-T, the valid values for interleaving are 0, 1, 2 and 4. While the first 3 are properly reported, the last one is reported as 3 instead. Fix it. Tested with a Dektec DTA-2111 RF generator. Signed-off-by:
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Mauro Carvalho Chehab authored
The logic that detects if auto search mode should be used is too complex. Also, it doesn't cover all cases, as the dib8000_tune logic requires either auto mode or a fully specified manual mode. So, move it to a separate function and add some extra debug data to help identifying when it falled back to auto mode, because the manual settings are invalid. Signed-off-by:
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Mauro Carvalho Chehab authored
Both dvbv5-scan and dvbv5-zap tools call FE_GET_PROPERTY inside the loop that checks for stats. If the frontend doesn't support DVBv5, it falls back to call the DVBv5 stats APIs(FE_READ_BER, FE_READ_SIGNAL, FE_READ_SNR and FE_READ_UNCORRECTED_BLOCKS). A call to FE_GET_PROPERTY makes dvb-frontend core to call get_frontend(). However, due to a race condition on dib8000 between dib8000_get_frontend and dib8000_tune, if get_frontend occurs too early, it causes the tune state machine to fail and not get any lock. This patch adds a workaround code that makes get_frontend() to just return if none of the frontends have a SYNC. This change fixed the issue with dvbv5-scan/dvbv5-zap, but a fine-tuned logic might be needed in the future, when we implement DVBv5 stats on this frontend. The procedure to test the bug and the fix is the one below: 1) tune into a non-existing frequency with: $ dvbv5-zap -I dvbv5 -c non_existing_freqs -m 679142857 -t3 2) tune/lock into an existing frequency with: $ dvbv5-zap -I dvbv5 -c isdb-test -m 479142857 or $ dvbv5-scan isdb-test In this case, 679 MHz carrier doesn't exist. Only 479 MHz does. Signed-off-by: -
Mauro Carvalho Chehab authored
As the dvb-frontend kthread can be called anytime, it can race with some get status ioctl. So, it seems better to avoid one to race with the other while reading a 32 bits register. I can't see any other reason for having a mutex there at I2C, except to provide such kind of protection, as the I2C core already has a mutex to protect I2C transfers. Note: instead of this approach, it could eventually remove the dib8000 specific mutex for it, and either group the 4 ops into one xfer or to manually control the I2C mutex. The main advantage of the current approach is that the changes are smaller and more puntual. Signed-off-by:
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Olivier Grenie authored
Commit 173a64cb broke support for some dib807x versions. Fix it by providing backward compatibility with the older versions. [mkrufky@linuxtv.org: conflict handling and CodingStyle fixes] Signed-off-by:
Olivier Grenie <olivier.grenie@parrot.com> Acked-by:
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- 18 Dec, 2013 13 commits
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Jacek Anaszewski authored
Whereas S5PC210 device produces decoded JPEG subsampling values that map on V4L2_JPEG_CHROMA_SUBSAMPLNG values, the Exynos4x12 device doesn't. This patch adds helper function s5p_jpeg_to_user_subsampling, which performs suitable translation. Signed-off-by:
Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
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Jacek Anaszewski authored
Exynos4x12 has limitations regarding setting chroma subsampling of an output JPEG image. It cannot be lower than the subsampling of the raw source image. Also in case of V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY option the source image fourcc has to be V4L2_PIX_FMT_GREY. This patch implements try_ctrl callback containing mechanism that prevents setting invalid value of the V4L2_CID_JPEG_CHROMA_SUBSAMPLING control. Signed-off-by:
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Jacek Anaszewski authored
When output queue fourcc is set to any flavour of YUV, the V4L2_CID_JPEG_CHROMA_SUBSAMPLING control value as well as its in-driver cached counterpart have to be updated with the subsampling property of the format so as to be able to provide correct information to the user space and preclude setting an illegal subsampling mode for Exynos4x12 encoder. Signed-off-by:
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Jacek Anaszewski authored
Exynos4x12 supports wider scope of subsampling modes than S5PC210. Adjust corresponding mask accordingly. Signed-off-by:
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Jacek Anaszewski authored
Adjust capture format to the Exynos4x12 device limitations, according to the subsampling value parsed from the source JPEG image header. If the capture format was set to YUV with subsampling lower than the one of the source JPEG image the decoding process would not succeed. Signed-off-by:
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Jacek Anaszewski authored
Make s5p_jpeg_parse_hdr function capable of parsing "YCbCr subsampling" field of a jpeg file header. Store the parsed value in the context. The information about source JPEG subsampling is required to make validation of destination format possible, which must be conducted for exynos4x12 device as the decoding process will not succeed if the destination format is set to YUV with subsampling lower than the one of the source JPEG image. With this knowledge the driver can adjust the destination format appropriately. Signed-off-by:
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Jacek Anaszewski authored
Add hardware API for the exynos4x12 on s5p-jpeg. Signed-off-by:
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Jacek Anaszewski authored
Move function definitions from jpeg-hw.h to jpeg-hw-s5p.c, add "s5p" prefix and put function declarations in the jpeg-hw-s5p.h. Signed-off-by:
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Hans Verkuil authored
Signed-off-by:
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Hans Verkuil authored
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Hans Verkuil authored
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Hans Verkuil authored
You shouldn't use buffers allocated on the stack for USB transfers, always kmalloc them. Signed-off-by:
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Sakari Ailus authored
DIV_ROUND_UP() is defined in kernel.h which was not included by media-entity.h. Do exactly that. Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by:
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