- 13 Sep, 2012 2 commits
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Lars-Peter Clausen authored
The ad7476 driver has only support for 1 channel ADCs. So the upper limit for the buffer size is the size of one sample plus the size of the timestamp. Preallocate a buffer large enough to hold this to avoid having to allocate and free a new buffer for each sample being captured. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Jonathan Cameron <jic23@kernel.org>
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Lars-Peter Clausen authored
Some of the parts supported by this driver are software compatible. The difference between them is only in the operating voltage range. So we do not need extra chip info entries for them. Signed-off-by:
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- 12 Sep, 2012 38 commits
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Lars-Peter Clausen authored
The datasheet is a bit confusing about this. It says that a dataword has 4 leading zeros, but the first zero is already put on the bus when CS is pulled low and the second zero is put on the bus on the first leading edge of SCLK, so when the first bit is sampled on the first trailing edge it will sample what the datasheet refers to as the second leading zero. Subsequently we only see 3 leading zeros in the 16 bit dataword and the result we get is shifted to the left by one bit. Fix this by adjusting the channel shift by 1. Signed-off-by:
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Jens Taprogge authored
Signed-off-by:
Jens Taprogge <jens.taprogge@taprogge.org> Signed-off-by:
Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jens Taprogge authored
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Samuel Iglesias Gonsalvez authored
With the latest patches, the TODO file was outdated. Signed-off-by:
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Samuel Iglesias Gonsalvez authored
The RX FIFO has a size of 3 characters. Check if when we are picking the oldest one, we have more to read. Signed-off-by:
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Jens Taprogge authored
Use tty_dev->dev's drdata to associate struct ipocal_channel to the respective tty_struct. Signed-off-by:
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Jens Taprogge authored
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Jens Taprogge authored
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Jens Taprogge authored
Make use of dev_set_drvdata() and dev_get_drvdata() to store and obtain a pointer to the ipoctal struct corresponding to a struct dev. Previously we relied on a private list of devices. Signed-off-by:
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Jens Taprogge authored
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Jens Taprogge authored
Now, all the interrupt related functions are next to each other. Signed-off-by:
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Jens Taprogge authored
Rename __tpci_request_irq() to tpci_enable_irq() and __tpci_free_irq() to tpci_disable_irq(). Change their second argument, move them above tpci200_interrupt(), and use tpci_disable_irq() in the latter Signed-off-by:
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Jens Taprogge authored
Minor cleanup. No functional changes. Signed-off-by:
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Jens Taprogge authored
Previously the return value from tpci200_interrupt was not quite correct if a slot had caused an interrupt but no handler was instellalled: IRQ_NONE was returned. However in this case we react to the interrupt by disabling the IPack device interrupt. Basically there are two cases the code now distinguishes: - The tpci200 has raised an interrupt. We handle it and return IRQ_HANDLED. - Our device did not raise an interrupt. We return IRQ_NONE. Signed-off-by:
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Jens Taprogge authored
Some of the device registers are accessed from both interrupt and non-interrupt context. To ensure proper read-modify-write modification of these registers we can not use the "global" tpci200 mutex. Instead a spin-lock is used. Signed-off-by:
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Jens Taprogge authored
In tpci200_request_irq as well as tpci200_free_irq we set and unset the pointer to struct slot_irq. This pointer is accessed in tpci200_interrupt. To ensure that the pointer is not freed after it has been fetched in tpci200_interrupt() it is now protected through RCU. Signed-off-by:
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Jens Taprogge authored
ipoctal_write_tty and ipoctal_write are merged. Signed-off-by:
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Jens Taprogge authored
Split the IRQ service routing in TX part and RX part. Signed-off-by:
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Jens Taprogge authored
This way interrupt handling becomes independent of the channel number. Signed-off-by:
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Jens Taprogge authored
Each tty's driver_data is now pointing to the channel it is talking to. struct ipoctal_channel contains all the information the callbacks require to do their work. Signed-off-by:
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Jens Taprogge authored
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Jens Taprogge authored
By moving everything channel related into a separate struct we will be able to clean up a lot of code. In the end tty->driver_data will no longer need to point to ipoctal but instead can point to the respective channel. Signed-off-by:
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Jens Taprogge authored
This also removes a possible bug in the unhandles_ints part when slots[i] is not set. Signed-off-by:
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Jens Taprogge authored
Use the __tpci200_{set,clear}_mask routines to access control register. Do not overwrite flags unrelated to interrupt handling. Signed-off-by: -
Jens Taprogge authored
Convert tpci200_set_clockrate and tpci200_interrupt. Signed-off-by:
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Macpaul Lin authored
gdm_usb.* coding style clean up. Signed-off-by:
Macpaul Lin <macpaul@gmail.com> Cc: Paul Stewart <pstew@chromium.org> Cc: Ben Chan <benchan@chromium.org> Cc: Sage Ahn <syahn@gctsemi.com> Signed-off-by:
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Aaro Koskinen authored
Add a sanity check for the video RAM size. It should fit into the PCI window. Signed-off-by:
Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by:
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Aaro Koskinen authored
It's possible to select video mode that exceeds the available video memory. This is potentially dangerous, fix by adding a check. The patch fixes system hangs seen occasionally when playing random videos with mplayer. Signed-off-by:
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Dan Carpenter authored
We don't need these to be world writable or group writable. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Cc: Daniel Cotey <puff65537@bansheeslibrary.com> Signed-off-by:
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Peter Senna Tschudin authored
Remove useless kfree() and clean up code related to the removal. The semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ position p1,p2; expression x; @@ if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; } @unchanged exists@ position r.p1,r.p2; expression e <= r.x,x,e1; iterator I; statement S; @@ if (x@p1 == NULL) { ... when != I(x,...) S when != e = e1 when != e += e1 when != e -= e1 when != ++e when != --e when != e++ when != e-- when != &e kfree@p2(x); ... return ...; } @ok depends on unchanged exists@ position any r.p1; position r.p2; expression x; @@ ... when != true x@p1 == NULL kfree@p2(x); @depends on !ok && unchanged@ position r.p2; expression x; @@ *kfree@p2(x); // </smpl> Signed-off-by:
Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by:
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Peter Senna Tschudin authored
Remove useless kfree() and clean up code related to the removal. The semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ position p1,p2; expression x; @@ if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; } @unchanged exists@ position r.p1,r.p2; expression e <= r.x,x,e1; iterator I; statement S; @@ if (x@p1 == NULL) { ... when != I(x,...) S when != e = e1 when != e += e1 when != e -= e1 when != ++e when != --e when != e++ when != e-- when != &e kfree@p2(x); ... return ...; } @ok depends on unchanged exists@ position any r.p1; position r.p2; expression x; @@ ... when != true x@p1 == NULL kfree@p2(x); @depends on !ok && unchanged@ position r.p2; expression x; @@ *kfree@p2(x); // </smpl> Signed-off-by:
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Kevin McKinney authored
This patch create and initalizes a new device id of 0x172 as reported by Rinat Camalov <richman1000000d@gmail.com>. In addition, a comment is added to the potential invalid existing device id. Reported-by:
Rinat Camalov <richman1000000d@gmail.com> Signed-off-by:
Kevin McKinney <klmckinney1@gmail.com> Signed-off-by:
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H Hartley Sweeten authored
This macro relies on a local variable having a specific name. Also, remove the kfree in the detach. The comedi core handles the kfree of dev->private. Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
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H Hartley Sweeten authored
The the cfc_check_trigger_src helper for the "step 1" tests in pci9118_ai_cmdtest(). Signed-off-by:
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H Hartley Sweeten authored
Move some of the functions to remove the need for the forward declarations. Signed-off-by:
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H Hartley Sweeten authored
These debug messages should be removed from the final driver. Signed-off-by:
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H Hartley Sweeten authored
These are just unnecessary whitespace. Signed-off-by:
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H Hartley Sweeten authored
These macros enable a bunch of function trace messages. These should not be in the final driver. Signed-off-by:
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