- 08 Mar, 2012 40 commits
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James Hogan authored
The raw Sony IR decoder decodes 15bit messages slightly incorrectly. To decode the function number, it shifts the bits right by 7 so that the function is in bits 7:1, masks with 0xFD (0b11111101), and does an 8 bit reverse so it ends up in bits 6:0. The mask should be 0xFE to correspond with bits 7:1 (0b11111110). The old mask had the effect of dropping the MSB of the function number from bit 6, and leaving the LSB of the device number in bit 7. Signed-off-by:
James Hogan <james.hogan@imgtec.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Ravi Kumar V authored
Adds GPIO based IR Receiver driver. It decodes signals using decoders available in rc framework. Signed-off-by:
Ravi Kumar V <kumarrav@codeaurora.org> Signed-off-by:
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Masanari Iida authored
Correct spelling "thresold" to "threshold" in drivers/media/video/davinci/dm355_ccdc.c Signed-off-by:
Masanari Iida <standby24x7@gmail.com> Signed-off-by:
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Danny Kukawka authored
Reverse cx18-driver part of commit 90ab5ee9 and change module_param_array() type from bool to int to fix compiler warning: In function ‘__check_radio’: 113:1: warning: return from incompatible pointer type [enabled by default] At top level: 113:1: warning: initialization from incompatible pointer type [enabled by default] 113:1: warning: (near initialization for ‘__param_arr_radio.num’) [enabled by default] v2: corrected version, don't change to module_param_named(), change all to int/uint Signed-off-by:
Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by:
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Larry Finger authored
In driver ivtv, there is a mismatch between the type of the radio module parameter and the storage variable, which leads to the following warning: CC [M] drivers/media/video/ivtv/ivtv-driver.o drivers/media/video/ivtv/ivtv-driver.c: In function ‘__check_radio’: drivers/media/video/ivtv/ivtv-driver.c:142: warning: return from incompatible pointer type drivers/media/video/ivtv/ivtv-driver.c: At top level: drivers/media/video/ivtv/ivtv-driver.c:142: warning: initialization from incompatible pointer type Signed-off-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
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Hans Verkuil authored
The code was unnecessarily complex, introducing a hdl_out handler that was not needed. Instead just add the controls to the cxhdl.hdl handler directly. Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
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Hans Verkuil authored
Currently v4l2_ctrl_add_handler adds only the controls that are owned by the handler. This is wrong. Instead all controls, whether owned or not, should be added. This is also implied by the v4l2-controls.txt documentation and it is clearly the right thing to do. The only reason this was never noticed before is because we never did this. Only recent changes in ivtv made this error visible because there a third handler layer was added (handler A inherits from handler B which inherits from C, D and E). Without this change handler A only sees the controls owned by handler B and the controls from C, D and E are missing. Signed-off-by:
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Mauro Carvalho Chehab authored
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Kyle Strickland authored
[mchehab@redhat.com: CodingStyle fixes] Signed-off-by:
Kyle Strickland <kyle@kyle.strickland.name> Signed-off-by:
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Andy Shevchenko authored
Without this we have got the warnings like following if build with "make W=1 O=/var/tmp": cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Andy Shevchenko authored
Without this we have got the warnings like following if build with "make W=1 O=/var/tmp": cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] Signed-off-by:
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Andy Shevchenko authored
Without this we have got the warnings like following if build with "make W=1 O=/var/tmp": cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] Signed-off-by:
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Andy Shevchenko authored
Without this we have got the warnings like following if build with "make W=1 O=/var/tmp": cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] Signed-off-by:
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Andy Shevchenko authored
Without this we have got the warnings like following if build with "make W=1 O=/var/tmp": cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] Signed-off-by:
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Andy Shevchenko authored
Without this we have got the warnings like following if build with "make W=1 O=/var/tmp": cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] Signed-off-by:
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Andy Shevchenko authored
Without this we have got the warnings like following if build with "make W=1 O=/var/tmp": CHECK drivers/media/video/videobuf-vmalloc.c CC [M] drivers/media/video/videobuf-vmalloc.o +cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] +cc1: warning: drivers/media/dvb/frontends: No such file or directory [enabled by default] +cc1: warning: drivers/media/dvb/dvb-core: No such file or directory [enabled by default] +cc1: warning: drivers/media/dvb/frontends: No such file or directory [enabled by default] LD drivers/media/built-in.o Some details could be found in [1] as well. [1] http://comments.gmane.org/gmane.linux.kbuild.devel/7733Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Dan Carpenter authored
I don't have this hardware and I don't know the subsystem very well. So please review this patch carefully. The original code definitely looks buggy though. Sparse complains about some endian bugs where little endian bugs are treated as cpu endian. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Dean Anderson <linux-dev@sensoray.com> Signed-off-by:
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Dan Carpenter authored
"f" wasn't checked consistently, so static checkers complain. This function is always called with a valid "f" pointer, so I have removed the check. Also the indenting was messed up. Signed-off-by:
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Danny Kukawka authored
drivers/media/video/mt9p031.c included 'media/v4l2-subdev.h' twice, remove the duplicate. Signed-off-by:
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Danny Kukawka authored
drivers/media/video/adp1653.c included 'linux/module.h' twice, remove the duplicate. Signed-off-by:
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James Hogan authored
Raw IR events are passed to the raw event thread through a kfifo. The size of the event struct is 12 bytes, and space for 512 events is reserved in the kfifo (6144 bytes), however this is rounded down to 4096 bytes (the next power of 2) by __kfifo_alloc(). 4096 bytes is not divisible by 12 therefore if the fifo fills up a third of a record will be written in the end of the kfifo by ir_raw_event_store() because the recsize of the fifo is 0 (it doesn't have records). When this is read by ir_raw_event_thread() a corrupted or partial record will be read, and in the case of a partial record the BUG_ON(retval != sizeof(ev)) gets hit too. According to samples/kfifo/record-example.c struct kfifo_rec_ptr_1 can handle records of a length between 0 and 255 bytes, so change struct ir_raw_event_ctrl to use that instead of struct kfifo. Signed-off-by:
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Javier Martin authored
If the attached video sensor cannot provide the requested image size, try to use resizing engine included in the eMMa-PrP IP. This patch supports both averaging and bilinear algorithms. Signed-off-by:
Javier Martin <javier.martin@vista-silicon.com> Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Fabio Estevam authored
csi clock frequency is already shown by: dev_info(&pdev->dev, "MX2 Camera (CSI) driver probed, clock frequency: %ld\n", clk_get_rate(pcdev->clk_csi)); ,so no need to have the dev_dbg call to present the same information. Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
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Fabio Estevam authored
Provide error message if clk_get fails. Signed-off-by:
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Javier Martin authored
Some elements of 'mx2_buffer' are grouped together in another auxiliary structure. This way we don't need to have unused 'vb2_buffer' structures for both discard buffers. Signed-off-by:
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Javier Martin authored
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Javier Martin authored
If active_bufs() list is empty and no IRQ status bit is set we are probably dealing with a share IRQ. Return IRQ_NONE in this case. Signed-off-by:
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Javier Martin authored
We don't need to use spin_lock_irqsave() since there are not any other IRQs that can race with this ISR. Signed-off-by:
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Javier Martin authored
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Javier Martin authored
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Javier Martin authored
The way discard buffer was previously handled lead to possible races that made a buffer that was not yet ready to be overwritten by new video data. This is easily detected at 25fps just adding "#define DEBUG" to enable the "memset" check and seeing how the image is corrupted. A new "discard" queue and two discard buffers have been added to make them flow trough the pipeline of queues and thus provide suitable event ordering. Signed-off-by:
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Javier Martin authored
Add "start_stream" and "stop_stream" callback in order to enable and disable the eMMa-PrP properly and save CPU usage avoiding IRQs when the device is not streaming. This also makes the driver return 0 as the sequence number of the first frame. Signed-off-by:
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Javier Martin authored
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Sascha Hauer authored
The i.MX27 DMA support was introduced with the initial commit of this driver and originally created by me. However, I never got this stable due to the racy DMA engine and used the EMMA engine instead. As the DMA support is most probably unused and broken in its current state, remove it. EMMA becomes the only supported mode on i.MX27. This also helps us get rid of another user of the legacy i.MX DMA support and remove the dependency on ARCH_MX* macros as these are scheduled for removal. Signed-off-by:
Sascha Hauer <s.hauer@pengutronix.de> [g.liakhovetski@gmx.de: remove unused goto] Signed-off-by:
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Xi Wang authored
The error handling in lgdt3303_read_status() and lgdt330x_read_ucblocks() doesn't work, because i2c_read_demod_bytes() returns a u8 and (err < 0) is always false. err = i2c_read_demod_bytes(state, 0x58, buf, 1); if (err < 0) return err; Change the return type of i2c_read_demod_bytes() to int. Also change the return value on error to -EIO to make (err < 0) work. Signed-off-by:Xi Wang <xi.wang@gmail.com> Cc: stable@vger.kernel.org Signed-off-by:
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Masanari Iida authored
Correct spelling "contrls" to "controls" in drivers/media/radio/radio-sf16fmr2.c Signed-off-by:
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Gianluca Gennari authored
On a set-top-box based on the Broadcom 7405 SoC (MIPS), the Abilis as102 driver causes a kernel oops while trying to map the URB stream buffers DMA addresses: CPU 0 Unable to handle kernel paging request at virtual address 007b9900, epc == 80010cc4, ra == 8039d108 Call Trace: [<80010cc4>] mips_dma_map_page+0x14/0x108 [<8039d108>] usb_hcd_map_urb_for_dma+0x338/0x4a8 [<8039d540>] usb_hcd_submit_urb+0x2c8/0x8cc [<e13655d8>] as102_submit_urb_stream+0x64/0xc8 [dvb_as102] [<e1365680>] as102_usb_start_stream+0x44/0x80 [dvb_as102] [<e1363628>] as102_dvb_dmx_start_feed+0xb4/0x17c [dvb_as102] [<803e20f4>] dmx_ts_feed_start_filtering+0x5c/0x134 [<803de454>] dvb_dmxdev_start_feed+0xd4/0x158 [<803dff28>] dvb_dmxdev_filter_start+0x2b8/0x448 [<803e07ac>] dvb_demux_do_ioctl+0x2a0/0x654 [<803ddc8c>] dvb_usercopy+0x124/0x204 [<800d5284>] do_vfs_ioctl+0xa0/0x6c0 [<800d58e8>] sys_ioctl+0x44/0xa8 [<8000ecfc>] stack_done+0x20/0x40 On other boxes based on older SoCs (7401) this doesn't happen, so it looks like a bug in the kernel specific to MIPS SMP. This issue has been reproduced on several kernel versions from 2.6.18 to 3.1.0. Since the base DMA address and the offsets are known, it is possible to map the DMA addresses of the URB buffers directly in the driver. This workaround fixes the problem and has been tested on both MIPS and x86 CPUs with success. By the way, with this fix the driver works perfectly fine on the set-top-box: both UHF and VHF frequencies are tuned without problems, and zapping is quite fast. SNR and signal strength reports seems to work fine, too. The only remaining problem (on both the PC and the set-top-box) is that after a soft reboot the device is not recognized again by the kernel. It requires a power cycle (or a manual unplug/replug) to be recognized again. So probably the device state is not reset properly at shut-down. Signed-off-by:
Gianluca Gennari <gennarone@gmail.com> Signed-off-by:
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Gianluca Gennari authored
On MIPS/ARM set-top-boxes, as well as old x86 PCs, memory allocation failures in the em28xx driver are common, due to memory fragmentation over time, that makes impossible to allocate large chunks of coherent memory. A typical system with 256/512 MB of RAM fails after just 1 day of uptime (see the old thread for detailed reports and crashlogs). In fact, the em28xx driver allocates memory for USB isoc transfers at runtime, as opposite to the dvb-usb drivers that allocates the USB buffers when the device is initialized, and frees them when the device is disconnected. Moreover, in digital mode the USB isoc transfer buffers are freed, allocated and cleared every time the user selects a new channel, wasting time and resources. This patch solves both problems by allocating DVB isoc transfer buffers in em28xx_usb_probe(), and freeing them in em28xx_usb_disconnect(). In fact, the buffers size and number depend only on the max USB packet size that is parsed from the USB descriptors in em28xx_usb_probe(), so it can never change for a given device. This approach makes no sense in analog mode (as the buffer size depends on the alternate mode selected at runtime), the patch creates two separate sets of buffers for digital and analog modes. For digital-only devices, USB buffers are created when the device is probed and freed when the device is disconnected. For analog-only devices, nothing changes: isoc buffers are created at runtime. For hybrid devices, two sets of buffers are maintained: the digital-mode buffers are created when the device is probed, and freed when the device is disconnected; analog-mode buffers are created/destroyed at runtime as before. So, in analog mode, digital and analog buffers coexists at the same time: this can be justified by the fact that digital mode is by far more commonly used nowadays, so it makes sense to optimize the driver for this use case scenario. The patch has been tested in the last few days on a x86 PC and a MIPS set-top-box, with the PCTV 290e (digital only) and the Terratec Hybrid XS (hybrid device). With the latter, I switched several times between analog and digital mode (Kaffeine/TvTime) with no issue at all. I unplugged/plugged the devices several times with no problem. Also, after over 3 days of normal usage in the MPIS set-top-box, the PCTV 290e was still up and running. Signed-off-by:
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Alexey Khoroshilov authored
If go7007_usb_vendor_request() fails in write_reg_fp() or in read_reg_fp(), the usb->i2c_lock mutex left locked. The patch moves mutex_unlock(&usb->i2c_lock) before check for go7007_usb_vendor_request() returned value. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by:
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Jean Delvare authored
The signal strength value returned is not quite correct, it decreases when I increase the gain of my antenna, and vice versa. It also doesn't span over the whole 0x0000-0xffff range. Compute a value which at least increases when signal strength increases, and spans the whole allowed range. In practice I get 67% with my antenna fully amplified and 51% with no amplification. This is close enough to what I get on my other DVB-T adapter with the same antenna. Signed-off-by:
Jean Delvare <khali@linux-fr.org> Cc: Steven Toth <stoth@kernellabs.com> Signed-off-by:
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