Commit Graph

212 Commits

Author SHA1 Message Date
Russell King 91bc51d8a1 [ARM] pxa: fix one-shot timer mode
One-shot timer mode on PXA has various bugs which prevent kernels
build with NO_HZ enabled booting.  They end up spinning on a
permanently asserted timer interrupt because we don't properly
clear it down - clearing the OIER bit does not stop the pending
interrupt status.  Fix this in the set_mode handler as well.

Moreover, the code which sets the next expiry point may race with
the hardware, and we might not set the match register sufficiently
in the future.  If we encounter that situation, return -ETIME so
the generic time code retries.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-11-08 23:35:46 +00:00
eric miao e9bba8ee6c [ARM] 4635/1: pxa: Change Eric Miao's email address to eric.miao@marvell.com
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-31 15:21:48 +00:00
Russell King df43309bd5 [ARM] pxa: shut up CLOCK_EVT_MODE_RESUME warning
Resolve:
  CC      arch/arm/mach-pxa/time.o
arch/arm/mach-pxa/time.c: In function `pxa_osmr0_set_mode':
arch/arm/mach-pxa/time.c:154: warning: enumeration value `CLOCK_EVT_MODE_RESUME' not handled in switch

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-31 15:21:42 +00:00
Aleksey Makarov 0825c67259 [ARM] 4613/1: pxa300: MFP typo fix
This fixes a typo in MFP address map.

Signed-off-by: Aleksey Makarov <amakarov@ru.mvista.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-20 23:42:04 +01:00
Rafael J. Wysocki 26398a70ea PM: Rename struct pm_ops and related things
The name of 'struct pm_ops' suggests that it is related to the power
management in general, but in fact it is only related to suspend.   Moreover,
its name should indicate what this structure is used for, so it seems
reasonable to change it to 'struct platform_suspend_ops'.   In that case, the
name of the global variable of this type used by the PM core and the names of
related functions should be changed accordingly.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 14:37:18 -07:00
Rafael J. Wysocki 95d9ffbe01 PM: Move definition of struct pm_ops to suspend.h
Move the definition of 'struct pm_ops' and related functions from <linux/pm.h>
to <linux/suspend.h> .

There are, at least, the following reasons to do that:
* 'struct pm_ops' is specifically related to suspend and not to the power
  management in general.
* As long as 'struct pm_ops' is defined in <linux/pm.h>, any modification of it
  causes the entire kernel to be recompiled, which is unnecessary and annoying.
* Some suspend-related features are already defined in <linux/suspend.h>, so it
  is logical to move the definition of 'struct pm_ops' into there.
* 'struct hibernation_ops', being the hibernation-related counterpart of
  'struct pm_ops', is defined in <linux/suspend.h> .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 14:37:18 -07:00
Mike Rapoport 3696a8a426 [ARM] 4576/1: CM-X270 machine support
This patch provides core support for CM-X270 platform.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-15 18:53:57 +01:00
Russell King 3e0cc7ee04 [ARM] pxa: Avoid pxa_gpio_mode() in gpio_direction_{in,out}put()
pxa_gpio_mode() is a universal call that fiddles with the GAFR
(gpio alternate function register.)  GAFR does not exist on PXA3
CPUs, but instead the alternate functions are controlled via the
MFP support code.

Platforms are expected to configure the MFP according to their
needs in their platform support code rather than drivers.  We
extend this idea to the GAFR, and make the gpio_direction_*()
functions purely operate on the GPIO level.

This means platform support code is entirely responsible for
configuring the GPIOs alternate functions on all PXA CPU types.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-15 18:53:55 +01:00
Russell King 39cbd4896e [ARM] pxa: move pxa_set_mode() from pxa2xx_mainstone.c to mainstone.c
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-15 18:53:50 +01:00
Russell King 693d9d95d6 [ARM] pxa: move pxa_set_mode() from pxa2xx_lubbock.c to lubbock.c
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-15 18:53:47 +01:00
eric miao 2c8086a5d0 [ARM] pxa: PXA3xx base support
Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-15 18:53:43 +01:00
Russell King a06748ab54 [ARM] pxa: tidy up arch/arm/mach-pxa/Makefile
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-15 18:53:33 +01:00
eric miao c95530c779 [ARM] 4560/1: pxa: move processor specific set_wake logic out of irq.c
a function pxa_init_irq_set_wake() was introduced, so that
processor specific code could install their own version

code setting PFER and PRER registers within pxa_gpio_irq_type
are removed, and the edge configuration is postponed to the
(*set_wake) and copies the GRER and GFER register, which will
always be set up correctly by pxa_gpio_irq_type()

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:15:33 +01:00
eric miao 30f0b40844 [ARM] 4559/1: pxa: make PXA_LAST_GPIO a run-time variable
This definition produces processor specific code in generic function
pxa_gpio_mode(), thus creating inconsistencies for support of pxa25x
and pxa27x in a single zImage.

As David Brownell suggests, make it a run-time variable and initialize
at run-time according to the number of GPIOs on the processor. For now
the initialization happens in pxa_init_irq_gpio(),  since there is
already a parameter for that, besides, this is and MUST be earlier
than any subsequent calls to pxa_gpio_mode().

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:15:32 +01:00
Russell King a7073b8b47 [ARM] pxa: mark pxa_set_cken deprecated
Allow the generic clock support code to fiddle with the CKEN register
and mark pxa_set_cken() deprecated.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:15:26 +01:00
Russell King a88a447d44 [ARM] pxa: remove get_lcdclk_frequency_10khz()
get_lcdclk_frequency_10khz() is now redundant, remove it.  Hide
pxa27x_get_lcdclk_frequency_10khz() from public view.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:15:25 +01:00
Russell King 435b6e94b8 [ARM] pxa: Make STUART and FICP clocks available
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:15:14 +01:00
Russell King a6dba20c5c [ARM] pxa: introduce clk support for PXA SoC clocks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:14:55 +01:00
Russell King 00dc4f949e [ARM] pxa: make pxa27x devices globally visible
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:14:53 +01:00
Russell King 15a4033354 [ARM] pxa: fix naming of memory/lcd/core clock functions
Rename pxa25x and pxa27x memory/lcd/core clock functions, and
select the correct version at run time.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:14:52 +01:00
Russell King e259a3aecb [ARM] pxa: convert PXA serial drivers to use platform resources
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:14:49 +01:00
Russell King 08197f6e3b [ARM] pxa: make pxa timer initialisation select clock rate at runtime
Rather than using the compile-time constant CLOCK_TICK_RATE, select
the clock tick rate at run time.  We organise the selection so that
PXA3 automatically falls out with the right tick rate.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:14:43 +01:00
Nicolas Pitre 6c3a158316 [ARM] 4550/1: sched_clock on PXA should cope with run time clock rate selection
The previous implementation was relying on compile time optimizations
based on a constant clock rate.  However, support for different PXA
flavors in the same kernel binary requires that the clock be selected at
run time, so here it is.

Let's move this code to a more appropriate location while at it.

Signed-off-by: Nicolas Pitre <npitre@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-12 21:14:35 +01:00
Richard Purdie c3f8f65046 backlight: Convert corgi backlight driver into a more generic driver
Convert the corgi backlight driver to a more generic version
so it can be reused by other code rather than being Zaurus/PXA
specific.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
2007-10-11 22:24:13 +01:00
Samuel fd51bcc5dc [ARM] 4557/1: Fix PXA irq gpio initialization
As pointed out by Jrgen, we are overflowing the number of GPIOs
in pxa_init_irq_gpio(). I'm seeing the same problem on my HTC
Universal PXA270 based PDA.
According to Eric, the function argument is the number of GPIOs,
so we should keep the semantics and reduce the number of
iteration by 1.

Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Acked-by: Jrgen Schindele <linux@schindele.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-08-28 22:59:43 +01:00
Bill Gatliff 7bbb18c9f4 [ARM] 4507/1: pxa2xx clock_event_device
Reimplements arch/arm/mach-pxa/time.c using a clock_event_device based
on OSMR0. Tested on PXA270, linux-2.6.22+arm:pxa patches.

Signed-off-by: Bill Gatliff <bgat@billgatliff.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-22 15:44:01 +01:00
Mike Rapoport 3d50527bbf [ARM] 4475/2: EM-x270 board support
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-20 17:45:15 +01:00
Eric Miao b750a09385 [ARM] 4489/1: pxa: split pxa_cpu_suspend to processor specific ones
1. split pxa_cpu_suspend to pxa25x_cpu_suspend and pxa27x_cpu_suspend
   and make pxa25x_cpu_pm_enter() and pxa27x_cpu_pm_enter() to invoke
   the corresponding _suspend functions, thus remove all those ugly
   #ifdef .. #endif out of sleep.S

2. move the declarations of those suspend functions to pm.h

note: this is not a clean enough solution until all the pxa25x and
pxa27x specific part is further removed out of sleep.S, sleep.S is
supposed to contain generic code only

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-20 17:25:20 +01:00
Eric Miao 711be5ccfe [ARM] 4488/1: pxa: move pxa25x/pxa27x specific code out of pm.c
1. introduce a structure pxa_cpu_pm_fns for pxa25x/pxa27x specific
   operations as follows:

	struct pxa_cpu_pm_fns {
		int	save_size;
		void	(*save)(unsigned long *);
		void	(*restore)(unsigned long *);
		int	(*valid)(suspend_state_t state);
		void	(*enter)(suspend_state_t state);
	}

2. processor specific registers saving and restoring are performed
   by calling the corresponding (*save) and (*restore)

3. pxa_cpu_pm_fns->save_size should be initialized to the required
   size for processor specific registers saving, the allocated
   memory address will be passed to (*save) and (*restore)

   memory allocation happens early in pxa_pm_init(), and save_size
   should be assigned prior to this (which is usually true, since
   pxa_pm_init() happens in device_initcall()

4. there're some redundancies for those SLEEP_SAVE_XXX and related
   macros, will be fixed later, one way possible is for the system
   devices to handle the specific registers saving and restoring

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-20 17:25:10 +01:00
Eric Miao e09d02e123 [ARM] 4480/1: pxa: change the pxa device naming scheme
1. for common devices across all the pxa variants, the names
   are changed to be:
     "pxa_device_xxx"

2. for pxa25x or pxa27x specific devices, the names are
   changed to be:
     "pxa25x_device_xxx", or
     "pxa27x_device_xxx"

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-20 09:57:18 +01:00
Russell King 46c41e62a1 [ARM] pxa: move platform devices to separate header file
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:21 +01:00
Russell King 34f3231f43 [ARM] pxa: move device registration into CPU-specific file
This allows individual CPU support to determine which platform
devices should be registered.  Also fix a copy-n-paste bug in
the I2C power platform device entry.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:21 +01:00
Russell King 4adb70fc1b [ARM] pxa: remove boot time RTC initialisation
The RTC library code contains everything necessary to set the
system time from the RTC; for similar reasons as the previous
commit, it's far better to let the RTC library code sort this
out rather than implement something which might not be
appropriate for everyone.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:17 +01:00
Russell King 2aca0a8657 [ARM] pxa: stop doing our own rtc management over suspend
Remove the RTC management over a suspend/resume cycle.  Firstly,
we may not be using the internal RTC for time keeping; some
platforms have an external RTC for this inspite of the PXA having
an internal RTC.  Secondly, the RTC library code handles updating
system time on resume.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:16 +01:00
Eric Miao f53f066c25 [ARM] 4451/1: pxa: make dma.c generic and remove cpu specific dma code
Since the number of dma channels varies between pxa25x and pxa27x, it
introduces some specific code in dma.c. This patch moves the specific
code to pxa25x.c and pxa27x.c and makes dma.c more generic.

1. add pxa_init_dma() for dma initialization, the number of channels
   are passed in by the argument

2. add a "prio" field to the "struct pxa_dma_channel" for the channel
   priority, and is initialized in pxa_init_dma()

3. use a general priority comparison with the channels "prio" field so
   to remove the processor specific pxa_for_each_dma_prio macro,  this
   is not lightning fast as the original one,  but it is acceptable as
   it happens when requesting dma, which is usually not so performance
   critical

Signed-off-by: eric miao <eric.miao@marvell.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:16 +01:00
Eric Miao cd49104d99 [ARM] 4450/1: pxa: add pxa25x_init_irq() and pxa27x_init_irq()
/* should be ok this time, I aligned this patch to your arm:pxa2.mbox */

1. move pxa25x specific IRQ initialization code to pxa25x_init_irq()
and pxa27x code to pxa27x_init_irq(), remove pxa_init_irq()

2. replace all pxa_init_irq() with their PXA25x or PXA27x specific
functions

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:15 +01:00
Eric Miao 4a3dcd35c8 [ARM] 4438/1: PXA: remove #ifdef .. #endif from pxa_gpio_demux_handler()
1. use GPIO_IRQ_mask[] to select those bits of interest, actually
   only those "unmasked" GPIO IRQs with their corresponding bits
   in GPIO_IRQ_mask[] set to "1" should be checked

2. remove #ifdef PXA_LAST_GPIO > 96 .. #endif, GPIO_IRQ_mask[]
   is used to mask out the irrelevant bits, so that even though
   the GEDR3 on PXA25x is reserved, it will be masked, and the
   following code will never run. Another point is that GPIO85-
   GPIO95 bits within GEDR2 will also be masked out on PXA25x

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:14 +01:00
Eric Miao 348f2e3b29 [ARM] 4437/1: PXA: move the GPIO IRQ initialization code to pxa_init_irq_gpio()
move the GPIO IRQ initialization code to pxa_init_irq_gpio()

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:11 +01:00
Eric Miao 53665a50fd [ARM] 4436/1: PXA: move low IRQ initialization code to pxa_init_irq_low()
1. move low IRQ initialization code to pxa_init_irq_low()

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:11 +01:00
Eric Miao c08b7b3ef6 [ARM] 4435/1: PXA: remove PXA_INTERNAL_IRQS
1. define PXA_GPIO_IRQ_BASE to be right after the internal IRQs,
   and define PXA_GPIO_IRQ_NUM to be 128 for all PXA2xx variants

2. make the code specific to the high IRQ numbers (32..64) to be
   PXA27x specific

3. add a function pxa_init_irq_high() to initialize the internal
   high IRQ chip, the invoke of this function could be moved to
   PXA27x specific initialization code

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:10 +01:00
Eric Miao 486c955118 [ARM] 4434/1: PXA: remove PXA_IRQ_SKIP
1. PXA_IRQ_SKIP is defined to be 7 on PXA25x so that the first IRQ
   starts from zero. This makes IRQ numbering inconsistent between
   PXA25x and PXA27x. Remove this macro so that the same IRQ_XXXXX
   definition has the same value on both PXA25x and PXA27x.

2. make IRQ_SSP3..IRQ_PWRI2C valid only if PXA27x is defined, this
   avoids unintentional use of these macros on PXA25x

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:09 +01:00
Russell King 88dfe98c68 [ARM] pxa: Fix PXA27x suspend type validation, remove pxa_pm_prepare()
pxa_pm_prepare() tried to validate the suspend method type.  As
noted in previous commits:
	eb9289eb20
	9c372d06ce
	e8c9c50269

the checking of the suspend type in the 'prepare' method is the
wrong place to do this; use the 'valid' method instead.  This
means that pxa_pm_prepare() can be entirely removed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:06 +01:00
Russell King e176bb05fe [ARM] pxa: move pm_ops structure into CPU specific files
Move the pm_ops structure into the PXA25x and PXA27x support
files.  Remove the old pxa_pm_prepare() function, and rename
the both pxa_cpu_pm_prepare() functions as pxa_pm_prepare().
We'll fix that later.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:05 +01:00
Russell King b23170c01f [ARM] pxa: introduce cpu_is_pxaXXX macros
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:28:04 +01:00
Russell King f4b6a0a401 [ARM] pxa: use mutexes instead of semaphores
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:27:55 +01:00
Russell King f62c3f2c35 [ARM] pxa: remove useless pxa_pm_finish() function
pxa_pm_finish() does nothing but return zero.  The core code
does nothing with this return value, and will not try to call
the finish method in the pm_ops structure if it is NULL.

Therefore, we can remove this useless function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-12 14:27:53 +01:00
Richard Purdie 1f750a782c [ARM] 4458/1: pxa: Fix CKEN usage and hence fix pxa suspend/resume
The PXA CKEN changes broken syspend/resume on the pxa27x. This patch
corrects the problem and fixes another couple of bad references.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-02 13:39:37 +01:00
Simon Arlott 6cbdc8c535 [ARM] spelling fixes
Spelling fixes in arch/arm/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-20 20:10:32 +01:00
Jürgen Schindele c9184f58ca [ARM] 4362/1: trizeps4 update
This update for trizeps4 SoM contains:
- support for new TFT on more recent ConXS evalboard
- correct partition of flash device
- update of "trizeps4_defconfig"

Signed-off-by: Jrgen Schindele (linux@schindele.name)
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-11 17:19:20 +01:00
Bernhard Walle b30fabadae Add IRQF_IRQPOLL flag on arm
Add IRQF_IRQPOLL for each timer interrupt.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:22 -07:00