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11 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
Sascha Hauer 83b0a5ae05 restart: replace reset_cpu with registered restart handlers 
This replaces the reset_cpu() function which every SoC or board must
provide with registered handlers. This makes it possible to have multiple
reset functions for boards which have multiple ways to reset the machine.
Also boards which have no way at all to reset the machine no longer
have to provide a dummy reset_cpu() function.

The problem this solves is that some machines have external PMICs or
similar to reset the system which have to be preferred over the
internal SoC reset, because the PMIC can reset not only the SoC but also
the external devices.

To pick the right way to reset a machine each handler has a priority. The
default priority is 100 and all currently existing restart handlers are
registered with this priority. of_get_restart_priority() allows to retrieve
the priority from the device tree which makes it possible for boards to
give certain restart handlers a higher priority in order to use this one
instead of the default one.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2015-08-27 21:37:03 +02:00
Lucas Stach 2084bface2 ARM: zynq: zedboard: don't select serial 
Selecting the serial driver breaks the build with CONFIG_SERIAL_NONE.
Move it to the defconfig of the board instead, like we do on other
boards.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2015-03-11 09:36:26 +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
Beniamino Galvani 32a2a673c6 clk: gate: add flags argument to clock gate constructor 
This adds a clk_gate_flags argument to clock gate creation functions
to allow the introduction of new clock gate modifiers.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2014-04-29 08:15:24 +02:00
Sascha Hauer f4c7536514 clk: clk-gate: pass flags to initializers 
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2014-03-28 21:03:02 +01:00
Sascha Hauer 068bed22a6 Set model and hostname at boardlevel 
With multiboard support the compiletime generated BOARDINFO string
gets more and more meaningless. This removes it from Kconfig and
replaces it with a variable that can be set at boardlevel.

Also many boards have a standard setting for the hostname in the
environment. This patch also moves the standard to C code by calling
barebox_set_hostname().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-08-16 08:40:55 +02:00
Antony Pavlov 6b4231dfd3 ARM: remove unused clkdev.h 
See also:

  commit eb84709192
  Author: Sascha Hauer <s.hauer@pengutronix.de>
  Date:   Mon Mar 25 15:18:38 2013 +0100

      clk: remove unused __clk_[get|put]

      This is some unused code resulting from copying stuff from
      the kernel. Remove it.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-05-12 12:30:19 +02:00
Steffen Trumtrar 508b996a62 ARM: zynq: add support for ethernet 
Add support for the ethernet device 0 on the Zynq7000 SoC.
The GEM is compatible to/the same one as the macb on at91.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-04-03 17:21:51 +02:00
Steffen Trumtrar 097513b8f8 ARM: zynq: add clk support for zynq7000 
This adds support for the clocktree on zynq7000 SoCs.
The patch is based on clocks.c from the larger patch
	ARM: zynq: add suppport for Zynq 7000 SoC
by Josh Cartwright.

The driver in that patch is converted to a platform_driver and code to
enable plls was added.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-03-27 09:23:49 +01:00
Steffen Trumtrar 1bb8460fc1 ARM: zynq: Add new architecture zynq 
Add basic support for the Xilinx Zynq-7000 EPP architecture.
The Zynq-7000 is an embedded processing platform that combines a Cortex A9
dualcore MPSoC with an Artix-7 FPGA.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2013-03-27 09:23:48 +01:00