SPEAr3xx architecture includes shared/multiplexed irqs for certain set
of devices. The multiplexor provides a single interrupt to parent
interrupt controller (VIC) on behalf of a group of devices.

There can be multiple groups available on SPEAr3xx variants but not
exceeding 4. The number of devices in a group can differ, further they
may share same set of status/mask registers spanning across different
bit masks. Also in some cases the group may not have enable or other
registers. This makes software little complex.

Present implementation was non-DT and had few complex data structures to
decipher banks, number of irqs supported, mask and registers involved.

This patch simplifies the overall design and convert it in to DT.  It
also removes all registration from individual SoC files and bring them
in to common shirq.c.

Also updated the corresponding documentation for DT binding of shirq.
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>

The max limit of con_id is 16 and dev_id is 20. As of now for spear3xx, many clk
ids are exceeding this predefined limit.

This patch is intended to rename clk ids like:
    mux_clk -> _mclk
    gate_clk -> _gclk
    synth_clk -> syn_clk
    ras_gen1_synth_gate_clk -> ras_syn1_gclk
    ras_pll3_48m -> ras_pll3_
    pll3_48m -> pll3_
Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Get rid of the unnecessary checks in dma_slave_config utilizing
the DMA direction.  This allows us to move the computation of
cctl to the prepare function.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Tested-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

viresh.kumar@st.com email-id doesn't exist anymore as I have left the
company.  Replace ST's id with viresh.linux@gmail.com.

It also updates .mailmap file to fix address for 'git shortlog'
Signed-off-by: NViresh Kumar <viresh.linux@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

SPEAr SoCs used its own clock framework since now. From now on they will move to
use common clock framework.

This patch updates existing SPEAr machine support to adapt for common clock
framework.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Reviewed-by: NMike Turquette <mturquette@linaro.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>

All SPEAr SoC's use ST's Timer module. This patch adds device tree probing
capability for that.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

We must use pinctrl framework instead of defining per SoC pinmux drivers. This
patch removes existing padmux support present for SPEAr platform.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NStephen Warren <swarren@wwwdotorg.org>

The register and irq definitions in mach/*.h for spear3xx and
spear6xx are now mostly obsolete, after the platforms have been
converted to device tree based probing and the data is now
part of the device tree files.

The misc_regs.h contents are moved into clock.c because that is
the only user, aside from the DMA_CHN_CFG that should eventually
get handled differently. Some of the contents of mach/spear.h
still remain, because they are used to set up the static map table,
timer, uart and auxdata tables, but almost everything got removed.
We might remove everything but the map table as the DT conversion
completes, but that is not a priority. I've also made sure to
make both copies of spear.h more or less identical so we can
eventually combine them.

The spear3?0.h files were only used by the spear3?0.c files, so I
merged the contents in there and removed the bits that were unused.
This is something that should still be looked at.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NViresh Kumar <viresh.kumar@st.com>

Both SPEAr3xx and SPEAr6xx families have one instance of ARM PL080 DMA
controller. This patch adds in support for that.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>

This patch adds a generic target for SPEAr3xx machines that can be configured
via the device-tree. Currently the following devices are supported via the
devicetree:

- VIC interrupts
- PL011 UART
- PL061 GPIO
- PL110 CLCD
- SP805 WDT
- Synopsys DW I2C
- Synopsys DW ethernet
- ST FSMC-NAND
- ST SPEAR-SMI
- ST SPEAR-KEYBOARD
- ST SPEAR-RTC
- ARASAN SDHCI-SPEAR
- SPEAR-EHCI
- SPEAR-OHCI

Other peripheral devices will follow in later patches.

This also removes IO_ADDRESS macro and creates 16 MB static mappings instead of
4K for individual peripherals. This is done to have efficient TLB lookup for any
I/O windows that are located closely together. ioremap() on this range will
return this mapping only instead of creating another.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>

For better print logs/messages, it is advisable to use pr_*() routines instead
of directly calling printks. This patch removes direct calling of printks for
spear3xx.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>

Acked-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Acked-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Reviewed-by: NStanley Miao <stanley.miao@windriver.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Prefix the pmx_devs to remove naming conflicts between the three
SPEAr3xx platforms. Also make pmx_driver static to each platform and
rework the init code to pass the devices rather than export the
pmx_driver structure.
Reviewed-by: NStanley Miao <stanley.miao@windriver.com>
Signed-off-by: NRyan Mallon <ryan@bluewatersys.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Prefix register and irq defintions to remove naming conflicts between
the three SPEAr3xx platforms.
Reviewed-by: NStanley Miao <stanley.miao@windriver.com>
Signed-off-by: NRyan Mallon <ryan@bluewatersys.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Define common clk_init routine in plat/clock.c for calling recalc_root_clocks.
This routine will be used for any common code across all machine families.
Whereas family specific spear*xx_clk_init routines will be used for family
specific code.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Resource size required mostly is 4K for all devices, whereas currently
reserved space is much beyond that. This patch replaces SIZE macro's used at
multiple places with SZ_4K.
Reviewed-by: NStanley Miao <stanley.miao@windriver.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: NRajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This patch makes inclusion of hardware.h and spear.h consistent over all spear
variants. Now we will include hardware.h, wherever we need to use hardware
macros. spear.h will be automatically included by hardware.h
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Move platform specific timer initialization code is moved into platform
specific files.
Reviewed-by: NJamie Iles <jamie@jamieiles.com>
Reviewed-by: NStanley Miao <stanley.miao@windriver.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: NRajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

- compile padmux only for spear3xx
- padmux initialization code rearranged in evaluation board and machine
  files.
Reviewed-by: NStanley Miao <stanley.miao@windriver.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

"gadget", "through", "command", "maintain", "maintain", "controller", "address",
"between", "initiali[zs]e", "instead", "function", "select", "already",
"equal", "access", "management", "hierarchy", "registration", "interest",
"relative", "memory", "offset", "already",
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

GPIO Pads in spear platform are are multiplexed in various machines.
This patch adds support for this pad multiplexing.
Reviewed-by: NLinus Walleij <linux.walleij@stericsson.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Reviewed-by: NLinus Walleij <linux.walleij@stericsson.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>