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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>
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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>
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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>
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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>
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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>
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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>
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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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