Commit Graph

77 Commits

Author SHA1 Message Date
Rafael J. Wysocki 2eaa03b5be ARM / PXA: Use struct syscore_ops for "core" power management
Replace sysdev classes and struct sys_device objects used for "core"
power management by the PXA platform code with struct syscore_ops
objects that are simpler.

This reduces the code size and the kernel memory footprint.  It also
is necessary for removing sysdevs entirely from the kernel in the
future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-24 19:16:09 +02:00
Eric Miao 7db6a7fa09 ARM: pxa: convert incorrect IRQ_TO_IRQ() to irq_to_gpio()
This fixes the failure to register the IRQ_RTCAlrm alarm as a wakeup
event.  It is misinterpreted as a gpio irq not a PWER bitmask. Fixed
this by converting the incorrect IRQ_TO_IRQ() to a correct version of
irq_to_gpio().

Reported-by: Nick Bane <nickbane1@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-04-13 09:30:40 +08:00
Russell King 2472f3c8d8 Merge branches 'at91', 'ep93xx', 'errata', 'footbridge', 'fncpy', 'gemini', 'irqdata', 'pm', 'sh', 'smp', 'spear', 'ux500' and 'via' into devel 2011-03-16 23:35:17 +00:00
Dmitry Eremin-Solenikov ea73e75200 ARM: pxa: enable pxa-pcm-audio on pxa210/pxa25x platform
pxa25x platforms were left out of major ASoC Update patch.
Since f0fba2ad1b a registration of pxa-pcm-audio device is required for
ASoC to function on pxa platforms. Register one also for pxa210/pxa25x.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-02-27 21:38:25 +08:00
Russell King 4f5ad99bb5 ARM: pm: convert PXA to generic suspend/resume support
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-22 17:11:24 +00:00
Lennert Buytenhek a3f4c927d3 ARM: PXA SoCs: irq_data conversion.
Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
2011-01-13 17:18:56 +01:00
Eric Miao f113fe4e84 ARM: pxa: introduce pxa2xx_clock_sysclass for clock suspend/resume
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-12-16 14:31:20 +08:00
Eric Miao 2a125dd56b ARM: pxa: remove get_memclk_frequency_10khz()
Introduce 'struct clk' for memory and remove
get_memclk_frequency_10khz().

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-12-16 14:31:19 +08:00
Eric Miao 4029813c89 ARM: pxa: separate the clock support into clock-{pxa2xx,pxa3xx}.c
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-12-16 14:31:19 +08:00
Marek Vasut ad68bb9f7a ARM: pxa: Access SMEMC via virtual addresses
This is important because on PXA3xx, the physical mapping of SMEMC registers
differs from the one on PXA2xx. In order to get PCMCIA working on both PXA2xx
and PXA320, the PCMCIA driver was adjusted accordingly as well.

Also, various places in the kernel had to be patched to use
__raw_read/__raw_write.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-12-16 14:31:16 +08:00
Marek Vasut 851982c1b6 ARM: pxa: Introduce pxa{25x,27x,3xx}_map_io()
This patch introduces pxa2xx_map_io() and pxa3xx_map_io() to distinguish
between PXA25x/PXA27x and PXA3xx memory mapping.

Also, fixup for platforms broken after introducing pxa{25x,27x}_map_io()
and pxa3xx_map_io() is included.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-12-16 14:31:15 +08:00
Eric Miao 09a5358d1e [ARM] pxa: move pmu device back into mach-pxa/
Not tested and enabled on MMP at this moment, and since the IRQ
is different from mach-pxa, I'd prefer to move the PMU device
back into mach-pxa/. Will introduce the PMU device to MMP once
it's enabled and tested.

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-08-05 14:32:19 +08:00
Russell King 0a0300dc8c ARM: Consolidate clks_register() and similar
Most machine classes want some way to register a block of clk_lookup
structures, and most do it by implementing a clks_register() type
function which walks an array, or by open-coding a loop.

Consolidate all this into clkdev_add_table().

Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12 17:32:36 +00:00
Russell King cc155c6f2c [ARM] pxa: allow platforms to control which uarts are registered
For some platforms, it is inappropriate to register all PXA UARTs.
In some cases, the UARTs may not be used, and in others we may want
to avoid registering the UARTs to allow other drivers (eg, FICP) to
make use of the UART.

In addition, a while back there was a request to be able to pass
platform data to the UART driver.

This patch enables all of this by providing functions platforms can
call to register each individual UART.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-12-01 09:02:55 +08:00
Eric Miao a58fbcd8ad [ARM] pxa: move IRQ handling of GPIO 0 and 1 outside of gpio.c
This is part of the work making gpio.c generic enough, the changes
include:

1. move IRQ handling of GPIO 0 and 1 outside (and back into irq.c)

2. pxa_init_gpio() accepts a range for muxed GPIO IRQs, and an IRQ
   number for the muxed GPIOs

3. __gpio_is_occupied() and __gpio_is_inverted() are made inline,
   and are moved into <mach/gpio.h> instead of generic gpio.c

Signed-off-by: Eric Miao <eric.miao@marvell.com>
2009-03-09 21:22:37 +08:00
Eric Miao fef1f99a0c [ARM] pxa: allow DMA controller IRQ being specified
Signed-off-by: Eric Miao <eric.miao@marvell.com>
2009-03-09 21:22:36 +08:00
Eric Miao 51c62982a3 [ARM] pxa: introduce pxa{25x,27x,300,320,930}.h for board usage
Considering the header mess ATM, it is not always possible to include
the correct header files within board code. Let's keep this simple:

  <mach/pxa25x.h>  - for pxa25x based platforms
  <mach/pxa27x.h>  - for pxa27x based platforms
  <mach/pxa300.h>  - for pxa300 based platforms
  <mach/pxa320.h>  - for pxa320 based platforms
  <mach/pxa930.h>  - for pxa930 based platforms

NOTE:

1. one header one board file, they are not compatible (i.e. they have
   conflicting definitions which won't compile if included together).

2. Unless strictly necessary, the following header files are considered
   to be SoC files use _only_, and is not recommended to be included in
   board code:

    <mach/hardware.h>
    <mach/pxa-regs.h>
    <mach/pxa2xx-regs.h>
    <mach/pxa3xx-regs.h>
    <mach/mfp.h>
    <mach/mfp-pxa2xx.h>
    <mach/mfp-pxa25x.h>
    <mach/mfp-pxa27x.h>
    <mach/mfp-pxa3xx.h>
    <mach/mfp-pxa300.h>
    <mach/mfp-pxa320.h>
    <mach/mfp-pxa930.h>

Signed-off-by: Eric Miao <eric.miao@marvell.com>
2009-03-09 21:22:36 +08:00
Russell King c5b84b3bb0 Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel
Conflicts:

	arch/arm/mach-pxa/pxa25x.c
2008-12-02 22:07:40 +00:00
Robert Jarzmik 724931465c [ARM] pxa: add resources for incoming rtc-pxa driver
Add IO memory and IRQ ressources for pxa based SoC to be
able to use the new rtc-pxa driver.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
2008-12-02 14:43:47 +08:00
Eric Miao 067455aa53 [ARM] pxa: add support for additional GPIOs on PXA26x
Original patch from Marek Vasut, the problems with PXA26x are:

1. there are additional 4 GPIOs 86,87,88,89 have their direction bits
   inverted in GPDR2, as well as their alternate function bits being
   '1' for their GPIO functionality in GAFRx

2. there is no easy way to decide if the processor is a pxa26x or a
   pxa250/pxa255 at run-time, so the assumption here is the pxa26x
   will be treated as one of the pxa25x variants, and board code
   should have a better knowledge of the processor it is featured

Introduce pxa26x_init_irq() for the second purpose, and treat the
additional GPIOs > 85 on PXA25x specially.

Kconfig option CONFIG_CPU_PXA26x is introduced to optimize the code
a bit when PXA26x support isn't needed. Board config options have
to select this to enable the support for PXA26x.

__gpio_is_inverted() will be optimized way when CONFIG_CPU_PXA26x
isn't selected.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
2008-12-02 14:42:37 +08:00
Eric Miao e88db8b91f Revert "[ARM] pxa: introduce cpu_is_pxa26x()"
This reverts commit da1a3dc0eb.

The originally proposed way in the above commit is incorrect. And
there is no easy way to distinguish between pxa25x and pxa26x at
run-time.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
2008-12-02 14:42:37 +08:00
Russell King 8c3abc7d90 [ARM] pxa: convert to clkdev and match clocks by struct device where possible
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-27 12:38:23 +00:00
Russell King 5a89770daa Merge branches 'pxa-core' and 'pxa-machines' into pxa-all
Conflicts:

	arch/arm/mach-pxa/Kconfig
	arch/arm/mach-pxa/pxa25x.c
	arch/arm/mach-pxa/pxa27x.c
2008-10-07 19:08:56 +01:00
Eric Miao 5a3d965190 [ARM] pxa: better MFP low power state support for pxa25x/pxa27x
When configured as a specific low power state: MFP_LPM_DRIVE_LOW,
MFP_LPM_DRIVE_HIGH, the corresponding GPDR register bit during
low power mode shall be re-configured as output (if they are not
configured so), thus the PGSRx bits can output.

Create an additional low power values GPDR registers, and properly
save/restore the GAFR + GPDR registers when doing suspend/resume.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-26 23:43:20 +01:00
Eric Miao da1a3dc0eb [ARM] pxa: introduce cpu_is_pxa26x()
PXA26x (PXA261/262) is actually a PXA250 with stacked Intel(R)
StartaFlash. And this can be decided by bit 3 (PKG_TYPE) of
BOOT_DEF register.

Due to this extra I/O register access, make cpu_is_pxa26x() a
public function instead of a macro.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-25 09:54:56 +01:00
Eric Miao 0ffcbfd54e [ARM] pxa: make cpu_is_pxa2* macros more consistent
1. add a CPUID table in the comment

2. make cpu_is_pxa25x() true for PXA210/250/255/26x

3. PXA210 is treated as PXA25x, all related code modified to
   reflect this

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-25 09:54:55 +01:00
Eric Miao 2b12797c59 [ARM] pxa: merge common cpu_is_pxa255() code together
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-25 09:54:54 +01:00
Russell King 4104980a3c [ARM] pxa: Allow platforms to override PSPR setting
Currently, we set PSPR just before entering sleep mode.  However,
some platforms have different requirements for setting PSPR in
order to properly wake up.

Set PSPR earlier in the suspend cycle so that platforms can
change the setting by using a sysdev driver instead.

Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-09 16:32:52 +01:00
Ian Molton c1ed406c21 [ARM] clocklib: Update users of aliases to new API
This patch removes the hardcoded alias array from pxa25x.c and reimplements
its functionality using the new clock alias call.

Signed-off-by: Ian Molton <spyro@f2s.com>
2008-08-12 12:54:31 +01:00
Russell King afd2fc02ab Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
Conflicts:

	arch/arm/mach-pxa/generic.c
	arch/arm/mach-pxa/pxa25x.c
	arch/arm/mach-pxa/pxa27x.c
	arch/arm/mach-pxa/pxa2xx.c
	arch/arm/mach-pxa/pxa3xx.c
	arch/arm/mach-pxa/reset.c
	arch/arm/mach-pxa/spitz.c
	arch/arm/mach-pxa/tosa.c
	drivers/watchdog/sa1100_wdt.c
2008-08-07 11:06:47 +01:00
Russell King a09e64fbc0 [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:55:48 +01:00
Russell King be50972935 [ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead
Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware.h,
update everything to directly include asm/arch/hardware.h and remove
asm/hardware.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:40:08 +01:00
Eric Miao 04fef228fb [ARM] pxa: introduce reset_status and clear_reset_status for driver's usage
Due to the problem of reset status bits being handled by different
registers between pxa2xx and pxa3xx, introduce a global reset_status
variable, initialized by SoC-specific code and later being used by
other drivers.

And also introduce clear_reset_status(), which is used to clear the
corresponding status bits. Pass RESET_STATUS_ALL to clear all bits.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
2008-08-05 09:26:02 +08:00
Ian Molton 13f7558237 Clocklib: Fix SA1111 clock name mess.
This patch uses the ability of PXA's clocklib to alias clock to resolve the
problem caused by sharing the SA1111 IO controller between PXA and SA1100
architectures, which have differing GPIO numbering.

Signed-off-by: Ian Molton <spyro@f2s.com>
2008-07-10 10:28:49 +01:00
Ian Molton ed847782f6 Clocklib: Provide for GPIO 12 clock on PXA
Signed-off-by: Ian Molton <spyro@f2s.com>
2008-07-10 10:28:43 +01:00
Ian Molton aa9ae8eb1a Fix serial broken-ness on PXA250
PXA255 and 26x are the only PXA CPUs with HWUART. This patch prevents bogus
initialisation on other models.

Signed-off-by: Ian Molton <spyro@f2s.com>
2008-07-10 10:28:36 +01:00
Philipp Zabel 7a85762043 [ARM] 5120/1: pxa: correct platform driver names for PXA25x and PXA27x UDC drivers
The pxa2xx_udc.c driver is renamed to pxa25x_udc.c (the platform
driver name changes from pxa2xx-udc to pxa25x-udc) and the
platform driver name of pxa27x_udc.c is fixed to pxa27x-udc.
pxa_device_udc in devices.c is split into pxa25x and pxa27x flavors
and the pxa27x_device_udc is enabled in pxa27x.c.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Including from Ian Molton:

Fixes for mistakes left over from the PXA2{5,7}X UDC split.

Signed-off-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-07-09 21:30:13 +01:00
Russell King fdc614e873 Merge branches 'pxa-misc', 'pxa-pwm' and 'pxa-multi' into pxa 2008-07-09 20:56:05 +01:00
Russell King bdb08cb2d3 [ARM] pxa: allow clk aliases
We need to support more than one name+device for a struct clk for a
small number of peripherals.  We do this by re-using struct clk alias
to another struct clk - IOW, if we find that the entry we're using is
an alias, we return the aliased entry not the one we found.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-07-09 20:54:14 +01:00
Russell King 0b0a9df603 [ARM] pxa: separate out power manager and clock registers
The power manager and core clock registers aren't present in PXA3
CPUs.  Move them out of pxa-regs.h into pxa2xx-regs.h, and include
pxa2xx-regs.h where necessary.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-06-02 19:33:27 +01:00
eric miao 75540c1ac3 [ARM] pxa: Add PXA support for PWM API
Patch mainly from Eric Miao, with minor edits by rmk.

Note: PWM0 and PWM2 share the same register I/O space and clock gating
on pxa{27x, 3xx}, thus PWM2 is treated in the driver as a child PWM of
PWM0. And this is also true for PWM1/3.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-05-19 16:25:39 +01:00
Russell King dc38e2ad53 [ARM] pxa: Fix RCSR handling
Related to d3930614e6.

RCSR is only present on PXA2xx CPUs, not on PXA3xx CPUs.  Therefore,
we should not be unconditionally writing to RCSR from generic code.

Since we now clear the RCSR status from the SoC specific PXA PM code
and before reset in the arch_reset() function, the duplication in
the corgi, poodle, spitz and tosa code can be removed.

Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-05-08 18:04:02 +01:00
Robert Jarzmik 649de51b88 [ARM] 5027/1: Fixed random memory corruption on pxa suspend cycle.
Each time a pxa type cpu went in suspend, a portion of
kmalloc memory was corrupted.
The issue was an incorrect length allocation introduced by
the commit 711be5ccfe for
the save registers array (=> overflow).

Signed-off-by: Robert Jarzmik <rjarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-05-04 11:06:05 +01:00
Russell King 1c104e0e4f [ARM] pxa: initialise PXA devices before platform init code
Initialise PXA devices before platform initialisation, so that
platforms can parent devices to these.

Acked-by: eric miao <ymiao3@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-19 11:29:09 +01:00
eric miao c0a596d6a1 [ARM] pxa: allow dynamic enable/disable of GPIO wakeup for pxa{25x,27x}
Changes include:

1. rename MFP_LPM_WAKEUP_ENABLE into MFP_LPM_CAN_WAKEUP to indicate
   the board capability of this pin to wakeup the system

2. add gpio_set_wake() and keypad_set_wake() to allow dynamically
   enable/disable wakeup from GPIOs and keypad GPIO

   * these functions are currently kept in mfp-pxa2xx.c due to their
     dependency to the MFP configuration

3. pxa2xx_mfp_config() only gives early warning if MFP_LPM_CAN_WAKEUP
   is set on incorrect pins

So that the GPIO's wakeup capability is now decided by the following:

   a) processor's capability: (only those GPIOs which have dedicated
      bits within PWER/PRER/PFER can wakeup the system), this is
      initialized by pxa{25x,27x}_init_mfp()

   b) board design decides:
      - whether the pin is designed to wakeup the system (some of
        the GPIOs are configured as other functions, which is not
        intended to be a wakeup source), by OR'ing the pin config
        with MFP_LPM_CAN_WAKEUP

      - which edge the pin is designed to wakeup the system, this
        may depends on external peripherals/connections, which is
        totally board specific; this is indicated by MFP_LPM_EDGE_*

   c) the corresponding device's (most likely the gpio_keys.c) wakeup
      attribute:

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-19 11:29:05 +01:00
eric miao b9e25aced3 [ARM] pxa: merge assignment of set_wake into pxa_init_{irq,gpio}()
To further clean up the GPIO and IRQ structure:

1. pxa_init_irq_gpio() and pxa_init_gpio() combines into a single
   function pxa_init_gpio()

2. assignment of set_wake merged into pxa_init_{irq,gpio}() as
   an argument

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-19 11:29:04 +01:00
eric miao f6fb7af476 [ARM] pxa: integrate low IRQ chip (ICIP) and high IRQ chip (ICIP2) into one
This makes the code better organized and simplified a bit.  The change
will lose a bit of performance when performing IRQ ack/mask/unmask,but
that's not too much after checking the result binary.

This patch also removes the ugly #ifdef CONFIG_PXA27x .. #endif by
carefully not to access those pxa{27x,3xx} specific registers, this
is done by keeping an internal IRQ number variable.  The pxa-regs.h
is also modified so registers for IRQ > PXA_IRQ(31) are made public
even if CONFIG_PXA{27x,3xx} isn't defined (for pxa25x's sake)

The incorrect assumption in the original code that internal irq starts
from 0 is also corrected by comparing with PXA_IRQ(0).

"struct sys_device" for the IRQ are reduced into one single device on
pxa{27x,3xx}.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-19 11:29:04 +01:00
Mark Brown 27b98a671f [ARM] 4831/2: Add PXA2xx AC97 clocks to clock API
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-19 11:29:02 +01:00
eric miao 16dfdbf038 [ARM] pxa: introduce sysdev for GPIO register saving/restoring
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:33 +00:00
eric miao c016550490 [ARM] pxa: introduce sysdev for IRQ register saving/restoring
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:33 +00:00