| Age | Commit message (Collapse) | Author |
|---|
|
- Initialized the read_words value.
- (tspi->irq < 0) is not valid
because tspi->irq is unsigned value.
Change-Id: I37973c863ecc770b9744737faf5d69cce7b97400
Reviewed-on: http://git-master/r/37868
Tested-by: Jubeom Kim <jubeomk@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
|
|
Following are the fixes;
- Supportng half duplex.
- Only using SW based CS.
- Write to readback with command register does not work. Fixing issue.
- Using cpu based transfer for smaller size and dma based for larger size.
- reading proper transfer status after every transaction.
bug 791149
bug 791780
Change-Id: I293b3f1b571276f5d8fe4ad4da67f827926e4b73
Reviewed-on: http://git-master/r/20581
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: Amit Kamath <akamath@nvidia.com>
|
|
disable unstable packed spi mode
Change-Id: I81a11a0f5dd9515ff1430ccfcc7d2ed7371e79b3
Reviewed-on: http://git-master/r/16105
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
|
|
Enabled clocks at spi_setup
Fixed problem with endianness for 16 bit word size
Fixed issue with small packet size less than fifo depth
Fixed typo that enabled RX and TX by default
Integration from http://git-master/r/#change,14536
Change-Id: I2cea3bdcb6a19780087671131a848095354105a3
Reviewed-on: http://git-master/r/15949
Reviewed-on: http://git-master/r/16048
Reviewed-by: Amit Kamath <akamath@nvidia.com>
Tested-by: Amit Kamath <akamath@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
|
|
remove executable permission on the target file.
Change-Id: I85c88e111cfe54d068d0dd47354f08b2e78537ef
Reviewed-on: http://git-master/r/14040
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
|
|
- DMA burst size can be set to 1, 4, or 8 depending on requested size
- PACKED MODE support
- When bits per word is 32, no endian conversion is needed; so use
memcpy to copy from client buf to dma buf or vice versa
- Do spi_complete operation in the last dma complete callback
- Reducing the loop-count from 500 to 50, thus making sure suspend is
not stuck.
bug 747979
bug 765062
Change-Id: I67fe1405e1cda886e9229b26dff5ebd80fd67247
Reviewed-on: http://git-master/r/12799
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
|
|
Source files should not be with executable permission.
Change-Id: I70b6be4cf88fea4be9b092ca2f5dd08e40ee7cbd
Reviewed-on: http://git-master/r/12081
Reviewed-by: Chao Jiang <chaoj@nvidia.com>
Tested-by: Chao Jiang <chaoj@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
|
|
for spi/slink, depending on transfer size,
burst size can be set to 1, 4, or 8.
bug 747979
Change-Id: Ieae0285d374e7d0eb6c2c2e633f8cafbb2b51b3a
Reviewed-on: http://git-master/r/12076
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
|
|
for spi/slink, set dma burst size based on
transfer size.
bug 747979
Change-Id: I8c3c0a0410648a25190847590b9ac0304fb1105f
Reviewed-on: http://git-master/r/11752
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
|
|
To avoid running out of DMA channels, use the shared DMA channel
for all four Tegra spi controllers.
Change-Id: Iff644253cf7fae36aa2e42321a1ded35a728da4f
Signed-off-by: Colin Cross <ccross@android.com>
|
|
Change-Id: Icecf7e64efcb39de072a15234ba1faa4bad40d25
Signed-off-by: Erik Gilling <konkers@android.com>
|
|
Some SPI devices require a delay between the CS and when the clock
starts. Increase SS_SETUP to accommodate these devices.
Change-Id: I301e3583e70c722cadde5a9f91119881805dd3a5
Signed-off-by: Greg Meiste <w30289@motorola.com>
|
|
Save/restore SLINK_COMMAND_0 register.
Wait for in-progress transactions to complete before suspend.
Reject and WARN_ON transactions when suspended.
Change-Id: I0527781f0bf95781afa3a35a68282cde2f0189ae
Signed-off-by: Todd Poynor <toddpoynor@google.com>
|
|
avoids derefencing an uninitialized pointer
Change-Id: Icf528441ae481e9f6f5ddc0be32c7c217fa49701
Signed-off-by: Erik Gilling <konkers@android.com>
|
|
v2 changes:
from Thierry Reding:
* add "select TEGRA_SYSTEM_DMA" to Kconfig
from Grant Likely:
* add oneline description to header
* inline references to DRIVER_NAME
* inline references to BUSY_TIMEOUT
* open coded bytes_per_word()
* spi_readl/writel -> spi_tegra_readl/writel
* move transfer validation to spi_tegra_transfer
* don't request_mem_region iomem as platform bus does that for us
* __exit -> __devexit
v3 changes:
from Russell King:
* put request_mem_region back int
from Grant Likely:
* remove #undef DEBUG
* add SLINK_ to register bit defines
* remove unused bytes_per_word
* make spi_tegra_readl/writel static linine
* various refactoring for clarity
* mark err if BSY bit is not cleared after 1000 retries
* move spinlock to protect setting of RDY bit
* subsys_initcall -> module_init
v3 changes:
from Grant Likely:
* update spi_tegra to use PTR_ERRless dma API
Signed-off-by: Erik Gilling <konkers@android.com>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Russell King <linux@arm.linux.org.uk>
|
