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10 Commits

Author SHA1 Message Date
Sascha Hauer 3bd69ad077 driver: replace dev_request_mem_region with dev_request_mem_resource 
dev_request_mem_region doesn't work properly one some SoCs on which
PTR_ERR() values clash with valid return values from dev_request_mem_region.
Replace them with dev_request_mem_resource where possible.

This patch has been generated with the following semantic patch:

// <smpl>
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
...
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
-	ret = PTR_ERR(io);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
+	ret = PTR_ERR(iores);
...
}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
identifier func;
@@
func(...) {
<+...
struct resource *iores;
-struct resource *iores;
...+>
}
// </smpl>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2016-03-07 08:57:56 +01:00
Lucas Stach 381f034ed6 ARM: move DMA alloc functions to dma.h 
This better separates the DMA from the MMU functionality.

Also move all drivers that only depends on asm/mmu.h for the alloc
functions over to the common header.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2015-03-06 07:52:02 +01:00
Sascha Hauer df9879c65d drivers: remove unnecessary mach/imx-regs.h include 
And replace the ones needed with the SoC specific header.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2015-01-05 11:30:59 +01:00
Sascha Hauer ed6e965824 resource: Let dev_request_mem_region return an error pointer 
For all users fix or add the error check.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2014-09-16 08:32:10 +02:00
Eric Bénard 3b3ec898cd mxs_spi: unbreak driver 
since the switch to common clock, SPI driver reports :
MXS: Timeout resetting block via register 0x80014000
mxs_spi mxs_spi2: MXS SPI: Timeout waiting for start

The reason is that the clock is not enabled anywhere in
the driver.

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-09-10 21:03:59 +02:00
Eric Bénard 524d2c81a0 mxs_spi: fix compile error 
this fix :
drivers/spi/mxs_spi.c:29:22: fatal error: mach/mxs.h: No such file or directory
and
drivers/spi/mxs_spi.c: In function 'mxs_spi_setup':
drivers/spi/mxs_spi.c:102:2: error: too few arguments to function 'stmp_reset_block'
include/stmp-device.h:21:12: note: declared here

only compile tested ATM

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-09-10 08:19:35 +02:00
Sascha Hauer ca13a84ac2 ARM: MXS: introduce stmp device support 
MXS specific devices have some common infrastructure in the kernel
known as STMP devices. We have the same in barebox, but with a
mxs_ prefix instead of a stmp_ prefix. As some STMP devices are
also found on i.MX6 move the common infrastructure out of MXS
specific files and use the stmp_ prefix.

This is done in preparation for i.MX6 NAND support.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-07-23 16:25:13 +02:00
Sascha Hauer 13a2b14650 spi: mxs: Use clk support 
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-06-20 08:49:56 +02:00
Alexander Shiyan aeaeb40ccf Add more drivers to using device_platform_driver() 
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-03-14 07:15:44 +01:00
Michael Grzeschik 86024a9f70 SPI: Add i.MX 23/28 SPI driver support 
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-02-11 20:58:34 +01:00