| 9c4b19a07dddda3ba35a2eb9b4134d485908e2f5 |
|
17-Nov-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: fix word width configuration
commit 8c328a262f ("spi: sirf: Avoid duplicate code in various
bits_per_word cases") is wrong in setting data width register of
fifo is not right, it should use sspi->word_width >> 1 to set
related bits. According to hardware spec, the mapping between
register value and data width:
0 - byte
1 - WORD
2 - DWORD
Fixes: 8c328a262f ("spi: sirf: Avoid duplicate code in various bits_per_word cases") is wrong in setting data width register of
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
|
| 9593e61582248fe30b099d59d15edd5a30f87add |
|
02-Sep-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: cleanup the indentation of marcos
let "#define" statement keep same indentation. the old code layout is
pretty ugly.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
|
| 810a58b0256b24f194dda5ca1e705204ca703f7b |
|
02-Sep-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: add fifo reset/start for cmd transfer
for command mode spi transfer, HW spec requires to do fifo reset work to
clear FIFO status.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
|
| 0021d97334d207169d2935489b8be11dc52c54a8 |
|
02-Sep-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: fix 'cmd_transfer' function typos
unify 'cmd_transfer' like 'pio_transfer' and 'dma_transfer' as void
function, and also change left_rx_word according to transfer result.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
|
| f2a08b404691ef3e7be6ce81c185335cfc68b6db |
|
02-Sep-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: enable RX_IO_DMA_INT interrupt
in spi interrupt handler, we need check RX_IO_DMA status to ensure
rx fifo have received the specify count data.
if not set, the while statement in spi isr function will keep loop,
at last, make the kernel hang.
[The code is actually there in the interrupt handler but apparently it
needs the interrupt unmasking so the handler sees the status -- broonie]
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
|
| 7850cdfc8028cc7d522c032f64c62c1c01e85875 |
|
02-Sep-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: correct spi gpio and hardware chipselect behaviour
the old codes check the cs-gpios, if the gpio number is 0 like:
<&gpio, 0, 0>, the driver will use the only hardware chipselect.
this is wrong because of_spi_register_master() can read property
cs-gpios from device node and set the spi master's cs number and
gpio cs automatically based on whether the cs-gpios is valid.
this patch fixes the beviour of CSR spi driver and move to a core
level supported way.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
|
| 41148c3a728222a885bc2f3ba3ce66831de0b244 |
|
04-May-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: decrease the interrupt count and latency of PIO mode
current PIO tranfer method be described as follows:
1. fill as much as bytes but no more than 256 bytes(fifo size)
2. enable oflow/uflow/txfifo_empty interrupt
3. isr process 3 interrupt signal, do complete works.
4. after isr done, if there are left bytes go into 1 else go into 5
5. transfer end
by current PIO transfer method:
1. reduce interrupt counts in spi interrupt line.
2. reduce interrupt latency because no do data fill/fetch in isr.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| c908ef345d2c314ec25cfac113a8f9bb2b6b3a25 |
|
15-Apr-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: refactor spi transfer functions
split sirfsoc_spi_transfer function into 3 sub-functions:
spi_sirfsoc_cmd_transfer, spi_sirfsoc_pio_transfer and
spi_sirfsoc_dma_transfer.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| bf83fd6402a856eeb9a22c364c50ccf9bbdf9b17 |
|
14-Apr-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: fix spi full-duplex DMA transferring issue
sometimes t->tx can be equal with t->rx. for example, spidev will make
tx and rx point to spidev->buffer at the same time. currently, for this
case, we map the buffer BIDIRECTION to fix the cache consistency.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| d77ec5df47696300b9498e6973dcc34b40de8d27 |
|
14-Apr-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: fix line over 80 characters style issue
fix a lot of "line over 80 characters" checkpatch issues, on which
the users of the driver, key customers care about this very much.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 6ee8a2f7d5e78700b6e64799b5e9976b21cfad79 |
|
14-Apr-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: make GPIO chipselect function work well
orignal GPIO chipslect is not standard because it don't take care to the
chipselect signal: BITBANG_CS_ACTIVE and BITBANG_CS_INACTIVE.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 625227a4e916fa87f1dd84bde518ef403c3f708a |
|
14-Apr-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: set SPI controller in RISC IO chipselect mode
SPI bitbang supply "chipselect" interface for change chip-select line
, in the SiRFSoC SPI controller, we need to enable "SPI_CS_IO_MODE",
otherwise, spi_sirfsoc_chipselect() has no effect.
now the driver is working is because SPI controller will control CS
automatically without SPI_CS_IO_MODE. this patch makes the CS controller
really controlled by software.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 818e91625aa17161cd6b39a4d08b77c984f0f485 |
|
14-Apr-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: correct TXFIFO empty interrupt status bit
the old code uses wrong marco - SIRFSOC_SPI_FIFO_FULL is not for
FIFO interrupt status, it is for FIFO status. here in the ISR,
SIRFSOC_SPI_TXFIFO_EMPTY is the right bit for SPI TXFIFO interrupt
status.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| a82ba3a318dd5eaf1f3dcbc335f81770d557a4fc |
|
05-Mar-2014 |
Axel Lin <axel.lin@ingics.com> |
spi: sirf: Add missing spi_master_{resume,suspend} calls to PM callbacks
This is required since commit 2025172e3280 "spi/bitbang: Use core message pump".
spi-bitbang now uses core message pump, so it needs to call spi_master_suspend/
spi_master_resume to stop/start the queue while suspend/resume.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| eeb7139524d1851c29b5c02b3dcd6679299a104e |
|
28-Feb-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: provide a shortcut for spi command-data mode
there are many SPI clients which use the following protocal:
step 1: send command bytes to clients(rx buffer is empty)
step 2: send data bytes to clients or receive data bytes from
clients.
SiRFprimaII provides a shortcut for this kind of SPI transfer.
when tx buf is less or equal than 4 bytes and rx buf is null
in a transfer, we think it as 'command' data and use hardware
command register for the transfer.
here we can save some CPU loading than doing both tx and rx
for a normal transfer.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 71aa2e3207ad3249b4a7ceff7ca775a08341fdcb |
|
26-Feb-2014 |
Jingoo Han <jg1.han@samsung.com> |
spi: sirf: Use SIMPLE_DEV_PM_OPS macro
Use SIMPLE_DEV_PM_OPS macro in order to make the code simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| facffed29709313593e6feab3a08d9664874e977 |
|
12-Feb-2014 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: use SET_SYSTEM_SLEEP_PM_OPS to initialize PM entries
use SET_SYSTEM_SLEEP_PM_OPS to initialize PM entries, this makes the codes
clean and also enable the ability of hibernation support for sirf SPI.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| dd7243d6a5de6faaef30cebc554ce8b39d5a3de5 |
|
12-Feb-2014 |
Barry Song <Baohua.Song@csr.com> |
spi: sirf: move to use generic dma dt-binding
sirf-dma driver enabled generic dt binding for dma channels.
see here we remove self-defined dma channel prop and move to
use generic dma_request_slave_channel.
related changes in dts is something like:
dmas = <&dmac1 9>,
<&dmac1 4>;
dma-names = "rx", "tx";
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 8c328a262f513c042f97fcd2f2797a6d69fc0773 |
|
15-Jan-2014 |
Axel Lin <axel.lin@ingics.com> |
spi: sirf: Avoid duplicate code in various bits_per_word cases
Trivial cleanup to avoid duplicate code in various bits_per_word cases.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 23061f1eb844edd349c3a0f5f40e244c9d2abfde |
|
17-Jan-2014 |
Axel Lin <axel.lin@ingics.com> |
spi: Remove duplicate code to set default bits_per_word setting
The implementation in spi_setup() already set spi->bits_per_word = 8 when
spi->bits_per_word is 0 before calling spi->master->setup.
So we don't need to do it again in setup() callback.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 16735d022f72b20ddbb2274b8e109f69575e9b2b |
|
14-Nov-2013 |
Wolfram Sang <wsa@the-dreams.de> |
tree-wide: use reinit_completion instead of INIT_COMPLETION
Use this new function to make code more comprehensible, since we are
reinitialzing the completion, not initializing.
[akpm@linux-foundation.org: linux-next resyncs]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13)
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| 702a4879ec337463f858c8ab467482cce260bf18 |
|
10-Sep-2013 |
Axel Lin <axel.lin@ingics.com> |
spi: bitbang: Let spi_bitbang_start() take a reference to master
Many drivers that use bitbang library have a leak on probe error paths.
This is because once a spi_master_get() call succeeds, we need an additional
spi_master_put() call to free the memory.
Fix this issue by moving the code taking a reference to master to
spi_bitbang_start(), so spi_bitbang_start() will take a reference to master on
success. With this change, the caller is responsible for calling
spi_bitbang_stop() to decrement the reference and spi_master_put() as
counterpart of spi_alloc_master() to prevent a memory leak.
So now we have below patten for drivers using bitbang library:
probe:
spi_alloc_master -> Init reference count to 1
spi_bitbang_start -> Increment reference count
remove:
spi_bitbang_stop -> Decrement reference count
spi_master_put -> Decrement reference count (reference count reaches 0)
Fixup all users accordingly.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Suggested-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Acked-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 94c69f765f1b4a658d96905ec59928e3e3e07e6a |
|
10-Sep-2013 |
Axel Lin <axel.lin@ingics.com> |
spi: bitbang: Let spi_bitbang_start() take a reference to master
Many drivers that use bitbang library have a leak on probe error paths.
This is because once a spi_master_get() call succeeds, we need an additional
spi_master_put() call to free the memory.
Fix this issue by moving the code taking a reference to master to
spi_bitbang_start(), so spi_bitbang_start() will take a reference to master on
success. With this change, the caller is responsible for calling
spi_bitbang_stop() to decrement the reference and spi_master_put() as
counterpart of spi_alloc_master() to prevent a memory leak.
So now we have below patten for drivers using bitbang library:
probe:
spi_alloc_master -> Init reference count to 1
spi_bitbang_start -> Increment reference count
remove:
spi_bitbang_stop -> Decrement reference count
spi_master_put -> Decrement reference count (reference count reaches 0)
Fixup all users accordingly.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Suggested-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Acked-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| a1216394e620d0dfbb03c712ae3210e7b77c9e11 |
|
09-Aug-2013 |
Axel Lin <axel.lin@ingics.com> |
spi: Use dev_get_drvdata at appropriate places
Use dev_get_drvdata() instead of platform_get_drvdata(to_platform_device(dev)).
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 692fb0fe5aacea861e4006342029cf505a7dbe18 |
|
25-Aug-2013 |
Qipan Li <Qipan.Li@csr.com> |
spi/sirf: fix the misunderstanding about len of spi_transfer
the unit of len of spi_transfer is in bytes, not in spi words. the
old codes misunderstood that and thought the len is the amount of
spi words. but it is actually how many bytes existing in the spi
buffer.
this patch fixes that and also rename left_tx_cnt and left_rx_cnt
to left_tx_word and left_rx_word to highlight they are in words.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 6cca9e2dd01adfa46a3b81f54f80d318714da418 |
|
23-Aug-2013 |
Wei Yongjun <yongjun_wei@trendmicro.com.cn> |
spi: sirf: fix error return code in spi_sirfsoc_probe()
Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 2479790b2970ee386174431af2ad9c948b328b95 |
|
14-Aug-2013 |
Julia Lawall <Julia.Lawall@lip6.fr> |
spi/sirf: simplify use of devm_ioremap_resource
Remove unneeded error handling on the result of a call to
platform_get_resource when the value is passed to devm_ioremap_resource.
Move the call to platform_get_resource adjacent to the call to
devm_ioremap_resource to make the connection between them more clear.
A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression pdev,res,n,e,e1;
expression ret != 0;
identifier l;
@@
- res = platform_get_resource(pdev, IORESOURCE_MEM, n);
... when != res
- if (res == NULL) { ... \(goto l;\|return ret;\) }
... when != res
+ res = platform_get_resource(pdev, IORESOURCE_MEM, n);
e = devm_ioremap_resource(e1, res);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| de39f5fa09d006561958431779c5a5e5b5b4e0ea |
|
06-Aug-2013 |
Barry Song <21cnbao@gmail.com> |
spi: sirf: use DMA if both buffer address and length are aligned
this patch enables DMA support for SiRFSoC SPI driver, if both
buffers and length are aligned with DMA controller's hardware
limitation, use generic SiRF generic dmaengine driver.
for PIO, SiRF SPI controller actually is using rx to trigger rx,
that means if we write any word to tx fifo, we will get a word
from rx fifo. for DMA, we use two different channel for tx and
rx, and issue them both for every transfer.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 94b1f0dfa6dd8a3ed303cc7b0034b17e9cc34824 |
|
25-Jun-2013 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: add missed spi mode_bits that SiRFSoC hardware supports
Missing this will cause some user cases fail when they want to change spi
transfer mode.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 804ae4380d1e76f5d81272b8a3b765f5e02fe46e |
|
03-Jun-2013 |
Arnd Bergmann <arnd@arndb.de> |
spi: sirf: avoid uninitialized-use warning
24778be20 "spi: convert drivers to use bits_per_word_mask"
removed the "default" statement in the spi_sirfsoc_setup_transfer
switch, causing a new warning:
drivers/spi/spi-sirf.c: In function 'spi_sirfsoc_setup_transfer':
arch/arm/include/asm/io.h:90:2: warning: 'rxfifo_ctrl' may be used uninitialized in this function [-Wmaybe-uninitialized]
asm volatile("str %1, %0"
^
drivers/spi/spi-sirf.c:364:19: note: 'rxfifo_ctrl' was declared here
u32 txfifo_ctrl, rxfifo_ctrl;
^
The compiler has correctly identified that this case may happen,
but since we know that things are horribly broken if bits_per_word
is ever something other than the values we tested, calling BUG()
is an appropriate action and tells the compiler that execution
will not continue afterwards.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
|
| 24778be20f87d5aadb19624fc768b3159fa43efc |
|
22-May-2013 |
Stephen Warren <swarren@wwwdotorg.org> |
spi: convert drivers to use bits_per_word_mask
Fill in the recently added spi_master.bits_per_word_mask field in as
many drivers as possible. Make related cleanups, such as removing any
redundant error-checking, or empty setup callbacks.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
|
| 237ce4665c12376391ddb148509204652f6ab758 |
|
18-May-2013 |
Qipan Li <Qipan.Li@csr.com> |
spi: sirf: fix the issue while transferring more than 256 words
currently, spi irq handler only does rx processing and fetching data from rx
fifo when "FRM_END" irq happens. FRM_END indicates one transfer completes. if
rx size is less than 256, it works well.
but the problem is that spi rx fifo size is only 256 bytes, then if data size
of one frame is more than 256, before FRM_END comes, rx fifo will be filled with
RXFIFO_OFLOW overflow interrupt, it will make us lose some data due to fifo
overflow.
Explicitly we need do fetch work from device rx fifo in irq handler not only in
"FRM_END" irq but also in "THD_REACH" irq. THD_REACH means rx fifo has come to
its threshold and will come to overflow if we don't take data from it in time.
In this patch, we fix this issue. we take data from rx fifo when either FRM_END
or RX_THD_REACH irq comes, we put data into tx fifo when either TX_FIFO_EMPTY
or TX_THD_REACH irq comes.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
|
| de1f9f270ea7fb7af37e1b62580e27b15273d63d |
|
06-May-2013 |
Mark Brown <broonie@opensource.wolfsonmicro.com> |
spi/sirf: Let device core handle pinctrl
Since commit ab78029 (drivers/pinctrl: grab default handles from device
core) we can rely on device core for handling pinctrl so remove
devm_pinctrl_get_select_default() from the driver.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Barry Song <baohua.song@csr.com>
|
| 3af4ed70252b172dd5b83ac9222ff38bbac6fdbe |
|
23-Apr-2013 |
Arnd Bergmann <arnd@arndb.de> |
spi/sirf: fix MODULE_DEVICE_TABLE
This fixes building the spi-sirf driver as a loadable module, which uses
an incorrect MODULE_DEVICE_TABLE, by changing the reference to the
correct symbol.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
|
| f3b8a8ecc5922d9dff303ae2fadc1eae608a6f7c |
|
26-Dec-2012 |
Barry Song <Baohua.Song@csr.com> |
spi/sirf: add support for new SiRFmarco SMP SoC
the driver is also compatible with SiRFmarco except SiRFprimaII,
so simply add "sirf,marco-spi" to OF match table.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
|
| e5118cd2c2881db18a92eec68d1b29db9bcbcaf3 |
|
26-Dec-2012 |
Barry Song <Baohua.Song@csr.com> |
spi/sirf: use clk_prepare_enable and clk_disable_unprepare
Convert clk_enable/clk_disable to clk_prepare_enable/clk_disable_unprepare
calls as required by common clock framework.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
|
| 766ed70447e0a9cfb23d068a4a929e18e54b0022 |
|
18-Dec-2012 |
Laxman Dewangan <ldewangan@nvidia.com> |
spi: remove check for bits_per_word on transfer from low level driver
The spi core make sure that each transfer structure have the proper
setting for bits_per_word before calling low level transfer APIs.
Hence it is no more require to check again in low level driver for
this field whether this is set correct or not. Removing such code
from low level driver.
The txx9 change also removes a test for bits_per_word set to 0, and
forcing it to 8 in that case. This can also be removed now since
spi_setup() ensures spi->bits_per_word is not zero.
if (!spi->bits_per_word)
spi->bits_per_word = 8;
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
|
| b0ee5605234a24f209b803f691957e5012eebf9a |
|
21-Jan-2013 |
Thierry Reding <thierry.reding@avionic-design.de> |
spi: Convert to devm_ioremap_resource()
Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
| fd4a319bc933ae93e68935b21924a9ca4ba2d060 |
|
07-Dec-2012 |
Grant Likely <grant.likely@secretlab.ca> |
spi: Remove HOTPLUG section attributes
CONFIG_HOTPLUG is going away as an option. As result the __dev*
markings will be going away.
Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.
Bill Pemberton has done most of the legwork on this series. I've used
his script to purge the attributes from the drivers/gpio tree.
Reported-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
|
| 71422f9e68d43f3fbc6c8939ca8d1b80aa2e4d1a |
|
15-May-2012 |
Barry Song <Baohua.Song@csr.com> |
SPI: PRIMA2: use the newest APIs of PINCTRL to fix compiling errors
Fix the compiling errors:
drivers/spi/spi-sirf.c: In function 'spi_sirfsoc_probe':
drivers/spi/spi-sirf.c:563: error: implicit declaration of function 'pinmux_get'
drivers/spi/spi-sirf.c:563: warning: assignment makes pointer from integer without a cast
drivers/spi/spi-sirf.c:568: error: implicit declaration of function 'pinmux_enable'
drivers/spi/spi-sirf.c:602: error: implicit declaration of function 'pinmux_disable'
drivers/spi/spi-sirf.c:603: error: implicit declaration of function 'pinmux_put'
make[3]: *** [drivers/spi/spi-sirf.o] Error 1
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
|
| 1cc2df9d6f41b689dc9a562a22de87f860ce6be5 |
|
13-Feb-2012 |
Zhiwu Song <zhiwu.song@csr.com> |
SPI: add CSR SiRFprimaII SPI controller driver
CSR SiRFprimaII has two SPIs (SPI0 and SPI1). Features:
* Master and slave modes
* 8-/12-/16-/32-bit data unit
* 256 bytes receive data FIFO and 256 bytes transmit data FIFO
* Multi-unit frame
* Configurable SPI_EN (chip select pin) active state
* Configurable SPI_CLK polarity
* Configurable SPI_CLK phase
* Configurable MSB/LSB first
Signed-off-by: Zhiwu Song <zhiwu.song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
|