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path: root/drivers/spi/spi-omap2-mcspi.c
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2012-05-19spi/omap2-mcspi: convert to the pump message infrastructureShubhrajyoti D1-133/+110
This patch converts the OMAP SPI driver to use the SPI infrastructure pump message queue.Also fixes the below warning. master is unqueued, this is deprecated Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-04-10spi/omap2-mcspi: Trivial optimisationShubhrajyoti D1-4/+3
Trivial optimisation of tmp variable by directly writing the value to the register. Cc: Tarun Kanti DebBarma <tarun.kanti@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
2012-04-10spi: omap2-mcspi: add support for pm_runtime autosuspendShubhrajyoti D1-1/+5
Adds support for configuring the omap2-mcspi driver use autosuspend for runtime power management. This can reduce the latency in starting an spi transfer by not suspending the device immediately following completion of a transfer. If another transfer then takes place before the autosuspend timeout (2 secs), the call to resume the device can return immediately saving some save/ restore cycles. Acked-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
2012-04-10spi/omap: Remove bus_num usage for instance indexBenoit Cousson1-41/+34
bus_num was used to reference the mcspi controller instance in a fixed array. Remove this array and store this information directly inside drvdata structure. bus_num is now just set if the pdev->id is present or with -1 for dynamic allocation by SPI core, but the driver does not access it anymore. Clean some bad comments format, and remove un-needed space. Signed-off-by: Benoit Cousson <b-cousson@ti.com> [Cleanup the OMAP2_MCSPI_MAX_CTRL macro as it is not needed anymore] Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
2012-04-10Merge branch 'spi' of git://gitorious.org/linus-tree/linus-tree into spi/nextGrant Likely1-37/+9
2012-03-19OMAP : SPI : use devm_* functionsShubhrajyoti D1-20/+4
The various devm_* functions allocate memory that is released when a driver detaches. This patch uses devm_request_and_ioremap to request memory in probe function. Since the freeing is not needed the calls are deleted from remove function.Also use use devm_kzalloc for the cs memory allocation. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
2012-03-19spi: omap2-mcspi: convert to module_platform_driverFelipe Balbi1-14/+1
this will delete a few lines of code, no functional changes. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
2012-03-19spi: omap2-mcspi: make it behave as a moduleFelipe Balbi1-4/+5
move probe away from __init section and use platform_driver_register() instead of platform_driver_probe(). Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
2012-02-15spi/omap: Add DT support to McSPI driverBenoit Cousson1-8/+48
Add device tree support to the OMAP2+ McSPI driver. Add the bindings documentation. Based on original code from Rajendra. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-29spi/omap: Correct the error pathShubhrajyoti D1-12/+20
Currently McSPI driver doesnt follow correct failure fallback steps attempting to correct the same. Also: - label names changed to give meaningful names. - Setting the driver data to NULL in remove Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-29spi/omap: call pm_runtime_disable in error path and removeShubhrajyoti D1-0/+2
omap mcspi probe() doesnt call pm_runtime disable functions in case of failure. remove() doesnt call pm_runtime disable. This could lead to warnings as below on subsequent insmod. ~# insmod spi-omap2-mcspi.ko [ 255.383671] omap2_mcspi omap2_mcspi.1: Unbalanced pm_runtime_enable! ... This patch adds the pm_runtime disable() at appropriate stages. Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-29spi/omap: Use a workqueue per omap2_mcspi controllerShubhrajyoti D1-8/+11
Currently all the spi controllers share the work queue. This patch allocates a work queue per controller. Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-24OMAP: SPI: Fix the trying to free nonexistent resource errorShubhrajyoti D1-3/+4
Currently there is a request_mem_region(r->start, .. followed by r->start += pdata->regs_offset; And then in remove r = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(r->start, resource_size(r)); Here the offset addition is not taken care. Fix the code for the same. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-10spi: Convert uses of struct resource * to resource_size(ptr)Joe Perches1-5/+5
Done via coccinelle scripts like: @@ struct resource *ptr; @@ - ptr->end - ptr->start + 1 + resource_size(ptr) and some grep and typing. Mostly uncompiled, no cross-compilers. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06spi: reorganize driversGrant Likely1-0/+1293
Sort the SPI makefile and enforce the naming convention spi_*.c for spi drivers. This change also rolls the contents of atmel_spi.h into the .c file since there is only one user of that particular include file. v2: - Use 'spi-' prefix instead of 'spi_' to match what seems to be be the predominant pattern for subsystem prefixes. - Clean up filenames in Kconfig and header comment blocks Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Linus Walleij <linus.walleij@linaro.org>
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