Commit Graph

441908 Commits

Author SHA1 Message Date
Sachin Kamat 53cb6342de clk: samsung: exynos5420: Fix VPLL lock offset
Set it as per the user manual.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14 19:23:37 +02:00
Naveen Krishna Chatradhi 5b73721b60 clk: samsung: exynos5250/5420: Add gate clock for SSS module
This patch adds gating clock for SSS(Security SubSystem)
module on Exynos5250/5420.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
[t.figa: Fixed sort order and group name.]
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14 19:23:26 +02:00
Tomasz Figa 91a1263fd2 clk: samsung: Initialize clock table with error pointers
Before this patch, the driver was simply zeroing the clock table, which
is incorrect, because invalid clock numbers returned NULL instead of
error pointers. This patch fixes this by changing the driver to
initialize the array with PTR_ERR(-ENOENT).

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-05-14 19:23:25 +02:00
Rahul Sharma d39e55e063 clk/exynos5260: add clock file for exynos5260
Add support for exynos5260 clocks in clock driver.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14 19:16:55 +02:00
Rahul Sharma 5a989cf6a0 clk/exynos5260: add macros and documentation for exynos5260
Add macros which are used as Clock IDs in DT and clock file.
It also adds the documentation for the exynos5260 clocks.

Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14 19:16:55 +02:00
Rahul Sharma eefe119b81 clk/samsung: add support for pll2650xx
Add support for pll2650xx in samsung pll file. This PLL variant
is close to pll36xx but uses CON2 registers instead of CON1.

Aud_pll in Exynos5260 is pll2650xx and uses this code.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Reviewed-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14 19:16:54 +02:00
Pankaj Dubey 8432984732 clk/samsung: add support for pll2550xx
exynos5260 use pll2550xx and it has different bit fields
for P,M,S values as compared to pll2550. Support for
pll2550xx is added here.

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14 19:16:54 +02:00
Rahul Sharma 976face4b4 clk/samsung: add support for multiple clock providers
Samsung CCF helper functions do not provide support to
register multiple Clock Providers for a given SoC. Due to
this limitation, SoC platforms are not able to use these
helpers for registering multiple clock providers and are
forced to bypass this layer.

This layer is modified accordingly to enable the support
for multiple clock providers.

Clock file for exynos4, exynos5250, exynos5420, exynos5440,
S3c64xx, S3c24xx are also modified as per changed helper functions.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
[t.figa: Modified s3c2410 clock driver as well]
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-05-14 19:15:38 +02:00
Heiko Stuebner 2916f9a2c6 ARM: S3C24XX: remove SAMSUNG_CLOCK remnants after ccf conversion
This finally removes all remaining SAMSUNG_CLOCK conditional code
from s3c24xx architectures.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:46 +09:00
Heiko Stuebner defd9da51d ARM: S3C24XX: remove legacy clock code
With the move to the common clock framework completed for s3c2410, s3c2440
and s3c2442, the legacy clock code for these machines can go away too.

This also includes the legacy dclk code, as all legacy users are converted.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:45 +09:00
Heiko Stuebner 07ee5e7c3e ARM: S3C24XX: convert s3c2410 to common clock framework
Convert the machines using the s3c2410 to use the new driver based
on the common clock framework instead of the legacy Samsung clock driver.

As with the s3c244x, machines using the clkout output will need a fixup
from someone with the hardware.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:44 +09:00
Heiko Stuebner a28d618e2e ARM: S3C24XX: convert s3c2440 and s3c2442 to common clock framework
Convert all machines using these cpus to use the ccf clock driver
instead of the legacy Samsung clock implementation.

Some of the more esotheric machines will probably need a fixup, as they
do strange things to the clkout outputs, that I did not really understand
nor have the hardware to check.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:43 +09:00
Heiko Stuebner 4659c53483 ARM: S3C24XX: add platform code for conversion to the common clock framework
This adds the necessary init functions to init the clocks from the common
clock framework and necessary CONFIG_SAMSUNG_CLOCK ifdefs around the legacy
clock code.

This also includes empty stubs for the *_setup_clocks functions that are
called from the cpufreq driver on resume.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:42 +09:00
Heiko Stuebner 3f7c01ade2 clk: samsung: add clock controller driver for s3c2410, s3c2440 and s3c2442
This driver can handle the clock controllers of the socs mentioned above,
as they share a common clock tree with only small differences.

The clock structure is built according to the manuals of the included
SoCs and might include changes in comparison to the previous clock
structure.

As pll-rate-tables only the 12mhz variants are currently included.
The original code was wrongly checking for 169mhz xti values [a 0 to much
at the end], so the original 16mhz pll table would have never been
included and its values are so obscure that I have no possibility to
at least check their sane-ness. When using the formula from the manual
the resulting frequency is near the table value but still slightly off.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:40 +09:00
Heiko Stuebner f11cadd582 dt-bindings: add documentation for s3c2410 clock controller
Describe the clock controller of s3c2410, s3c2440 and s3c2442.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:39 +09:00
Heiko Stuebner 51cb128987 ARM: S3C24XX: enable usage of common dclk if common clock framework is enabled
Add platform device and select the correct implementation automatically
depending on wether the old samsung_clock or the common clock framework
is enabled.

This is only done for machines already using the old dclk implementation,
as everybody else should move to use dt anyway.

The machine-specific settings for the external clocks will have to be set
by somebody with knowledge about the specific hardware.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
[pebolle@tiscali.nl: pointed out typo and fixed]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-13 08:00:01 +09:00
Arun Kumar K 3528dd34b2 ARM: dts: Add exynos5420 peach-pit board support
Adds the google peach-pit board dts file which uses
exynos5420 SoC.

Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 06:06:50 +09:00
Arun Kumar K 8e371a91d9 ARM: dts: Add node labels to exynos5420
Adding labels to nodes which do not have it yet in exynos5420.
This is done so as to use reference based node updation in board
files.

Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 06:06:41 +09:00
Arun Kumar K c4539e88e7 ARM: dts: Add pwmX_out pinctrl nodes to exynos5420
Adds the PWM nodes to 5420 pinctrl dtsi file.

Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 06:06:10 +09:00
Sylwester Nawrocki 4cb378646e ARM: dts: Add rear camera nodes for exynos4412-trats2
This patch enables the rear facing camera (s5c73m3) on TRATS2 board
by adding the I2C0 bus controller, s5c73m3 sensor, MIPI CSI-2 receiver
and the sensor's voltage regulator supply nodes.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 06:01:40 +09:00
Sylwester Nawrocki ee5eda64af ARM: dts: Update camera nodes for exynos4 and exynos4412-trats2
Remove unused /camera/clock-controller node and add required clock
properties to the camera node. This is required for a clock provider
that will be referenced by image sensor devices.
Also add required clock related changes to s5k6a3 device node and
afvdd regulator supply.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 06:00:35 +09:00
Tomasz Stanislawski 6af2ba9081 ARM: dts: rename alias for i2c_ak8975 label for exynos4412-trats2
The i2c_ak8975 controller uses label i2c8.
This alias is already used for I2C controller 8 defined
in file arch/arm/boot/dts/exynos4.dtsi.

This patch renames a label for i2c_ak8975 to i2c9.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 05:58:59 +09:00
Tomasz Stanislawski 9c869d1f07 ARM: dts: add missing pinctrls for I2C of exynos4
This patch adds missing pinctrls for I2C controllers 2-7.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 05:55:48 +09:00
Heiko Stuebner 5799ea12a4 clk: samsung: add clock driver for external clock outputs
This adds a driver for controlling the external clock outputs of
s3c24xx architectures including the dclk muxes and dividers.

The driver at the moment only supports the legacy non-dt boards using these
clock outputs. The clock-output control itself is part of the system-controller
mainly controlled by the pinctrl drivers. So it should most likely be
integrated there for dt platforms.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 05:48:51 +09:00
Heiko Stuebner d8b532578f ARM: S3C24XX: cpufreq-utils: don't write raw values to MPLLCON when using ccf
The s3c24xx cpufreq driver needs to change the mpll speed and was doing
this by writing raw values from a translation table into the MPLLCON
register.

Change this to use a regular clk_set_rate call when using the common
clock framework and only write the raw value in the samsung_clock case.

The s3c cpufreq driver does already aquire the mpll, so simply add a reference
to struct s3c_cpufreq_config to let set_fvco access it.

While struct clk is opaque the differenciation between samsung clock and
common clock is kept, as the samsung-clock mpll clk does not implement a
real set_rate.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-09 05:48:44 +09:00
Olof Johansson eb7e855b41 drivers: Add reset driver for SOCFPGA
Add a reset driver for the SOCFPGA platform.
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Merge tag 'socfpga-driver-update-for-3.16' of git://git.rocketboards.org/linux-socfpga-next into next/drivers

Merge "drivers: Add reset driver for SOCFPGA" from Dinh Nguyen:

Add a reset driver for the SOCFPGA platform.

* tag 'socfpga-driver-update-for-3.16' of git://git.rocketboards.org/linux-socfpga-next:
  reset: add driver for socfpga

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-05-05 15:13:33 -07:00
Afzal Mohammed 27b7d5f3cc bus: omap_l3_noc: Add AM4372 interconnect error data
Add AM4372 information to handle L3 error.

AM4372 has two clk domains 100f and 200s. Provide flagmux and data
associated with it.

NOTE: Timeout doesn't have STDERRLOG_MAIN register. And per hardware
team, L3 timeout error cannot be cleared the normal way (by setting
bit 31 in STDERRLOG_MAIN), instead it may be required to do system
reset. L3 error handler can't help in such scenarios.

Hence indicate timeout target offset as L3_TARGET_NOT_SUPPORTED as
done for undocumented bits.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:34:37 -05:00
Rajendra Nayak 53a848be0a bus: omap_l3_noc: Add DRA7 interconnect error data
DRA7 is distinctly different from OMAP4 in terms of masters and clock
domain organization. There two main clock domains which is divided as
follows:
     <0x44000000 0x1000000> is clk1 and clk2 is the sub clock domain
     <0x45000000 0x1000> is clk3

Add all the data needed to handle L3 error handling on DRA7 devices
and mark clk2 as subdomain and provide a compatible flag for
functionality. Other than the data difference the hardware blocks
involved are essentially the same.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: bugfixes and generic improvements, documentation]
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:34:26 -05:00
Nishanth Menon f33ddf745c bus: omap_l3_noc: introduce concept of submodule
While OMAP4 and OMAP5 had 3 separate clock domains, DRA7 has only 2
and the first one then is internally divided into 2 sub clock domains.

To better represent this in the driver, we use the concept of submodule.

The address defintions in the devicetree is as per the high level
clock domain(module) base, the sub clockdomain/subdomain which shares
the same register space of a clockdomain is marked in the SoC data as
L3_BASE_IS_SUBMODULE.

L3_BASE_IS_SUBMODULE is used as an indication that it's base address is
the same as the parent module and offsets are considered from the same
base address as they are usually intermingled.

Other than the base address, the submodule is same as a module as it is
functionally so.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:34:20 -05:00
Nishanth Menon cf52b2ecd7 bus: omap_l3_noc: Add information about the context of operation
L3 error may be triggered using Debug interface (example JTAG) or
due to other errors, for example an opcode fetch (due to function
pointer or stack corruption) or a data access (due to some other
failure). NOC registers contain additional information to help aid
debug information.

With this, we can enhance the error information to more detailed form:
"
L3 Custom Error: MASTER MPU TARGET L4PER2 (Read): Data Access in User mode
during Functional access
"

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:34:15 -05:00
Nishanth Menon 7f9de02d60 bus: omap_l3_noc: add information about the type of operation
Today we get error such as
L3 Custom Error: MASTER MPU TARGET L4PER2

But since the actual instruction triggerring the error Vs the point
at which we report error may not be aligned, it makes sense to try
and provide additional information - example the type of operation
that was attempted to being performed can help narrow the debug down
further.

This helps provide log such as:
L3 Custom Error: MASTER MPU TARGET L4PER2 (Read)

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:34:09 -05:00
Afzal Mohammed 2100b595b7 bus: omap_l3_noc: ignore masked out unclearable targets
Errors that cannot be cleared (determined by reading REGERR register)
are currently handled by masking it. Documentation states that REGERR
"Checks which application/debug error sources are active" - it does not
indicate that this is "interrupt status" - masked out status represented
eventually in the irq line to MPU.
For example:

Lets say module 0 bit 8(0x100) was unclearable, we do the mask it from
generating further errors. However in the following cases:
a) bit 9 of Module 0
OR
b) any bit of Module 1+
occur, the interrupt handler wrongly assumes that the raw interrupt
status of module 0 bit 8 is the root cause of the interrupt, and
returns. This causes unhandled interrupt and resultant infinite
interrupts.

Fix this scenario by storing the events we masked out and masking raw
status with masked ones before identifying and handling the error.

Reported-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Tested-by: Vaibhav Hiremath <hvaibhav@gmail.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:34:03 -05:00
Nishanth Menon e4be3f3a04 bus: omap_l3_noc: improve readability by using helper for slave event parsing
Current interrupt handler does the first level parse to identify the
slave and then handles the slave even identification, reporting and
clearing of event as well. It is hence logical to split the handler
into two where the primary handler just parses the flagmux till it
identifies a slave and the slave handling, reporting and clearing is
done in a helper function.

While at it update the documentation in kerneldoc style.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:58 -05:00
Nishanth Menon c98aa7aaa2 bus: omap_l3_noc: make error reporting and handling common
The logic between handling CUSTOM_ERROR and STANDARD_ERROR is just the
reporting style.

So make it generic, simplify and standardize the reporting with both
master and target information printed to log.

Handle the register address difference for master code for standard
error and custom error as well.

While at it, fix a minor indentation error.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:52 -05:00
Nishanth Menon d4d8819e20 bus: omap_l3_noc: fix masterid detection
As per Documentation (OMAP4+), then masterid is infact encoded as
follows:
"L3_TARG_STDERRLOG_MSTADDR[7:0] STDERRLOG_MSTADDR stores the NTTP
master address. The master address is the concatenation of Prefix &
Initiator ConnID. It is defined on 8 bits. The 6 MSBs are used to
distinguish the different initiators."

So, when we matchup currently with the master ID list, we never get a
proper match other than when MPU is the master (thanks to 0).

Now, on other platforms such as AM437x, this tends to be bits[5:0].

Fix this by using the relevant 6MSBits to identify the master ID for
standard and custom errors.

Reported-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:46 -05:00
Nishanth Menon 97708c08c9 bus: omap_l3_noc: convert flagmux information into a structure
This allows us to encompass target information and flag mux offset that
points to the target information into a singular structure. This saves
us the need to look up two different arrays indexed by module ID for
information.

This allows us to reduce the static target information allocation to
just the ones that are documented.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:40 -05:00
Sricharan R 0659452dd2 bus: omap_l3_noc: use of_match_data to pick up SoC information
DRA7xx SoC has the same l3-noc interconnect ip (as OMAP4 and OMAP5), but
AM437x SoC has just 2 modules instead of 3 which other SoCs have.

So, stop using direct access of array indices and use of->match data and
simplify implementation to benefit future usage.

While at it, rename a few very generic variables to make them omap
specific. This helps us differentiate from DRA7 and AM43xx data in the
future.

NOTE: None of the platforms that use omap_l3_noc are non-device tree
anymore. So, it is safe to assume OF match here.

Signed-off-by: Sricharan R <r.sricharan@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: split, refactor and optimize logic]
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:33 -05:00
Rajendra Nayak 3340d739f8 bus: omap_l3_noc: Add support for discountinous flag mux input numbers
On DRA7, unlike on OMAP4 and OMAP5, the flag mux input numbers used
to indicate the source of errors are not continous. Have a way in the
driver to catch these and WARN the user of the flag mux input thats
either undocumented or wrong.

In the similar vein, Timeout errors in AM43x can't be cleared per h/w
team, neither does it have a STDERRLOG_MAIN to clear the error.

Further, the mux bit offset might not even be indexed into our array
of known mux input description, in which case we'd have a abort.

So, define a static range check for bit description and any definition
which has target_name set to NULL (the ones that are not populated or
ones that are specifically marked in the case of discontinous input
numbers), can handle the same gracefully. Upon occurance of error from
such sources, mask it. Otherwise, we'd have an infinite interrupt
source without any means to clear it.

NOTE: follow on patch ensures that these masked bits are ignored.

[nm@ti.com: rebase, squash and improve]
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:27 -05:00
Nishanth Menon 3ae9af7c90 bus: omap_l3_noc: convert target information into a structure
Currently the target instance information is organized indexed by bit
field offset into multiple arrays.

1. We currently have offsets specific to each target associated with each
clock domains are in seperate arrays:

l3_targ_inst_clk1
l3_targ_inst_clk2
l3_targ_inst_clk3

2. Then they are organized per master index in l3_targ.

3. We have names in l3_targ_inst_name as an array to array of strings
corresponding to the above with offsets.

Simplify the same by defining a structure for information containing
both target offset and name. this is then stored in arrays per domain
and organized into an array indexed off domain.

The array is still indexed based on bit field offset.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:19 -05:00
Nishanth Menon f0a6e654d8 bus: omap_l3_noc: move L3 master data structure out
Move the L3 master structure out of the static definition to enable
reuse for other SoCs.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:14 -05:00
Nishanth Menon add6f74b9b bus: omap_l3_noc: un-obfuscate l3_targ address computation
just simplify derefencing that is equivalent.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:08 -05:00
Nishanth Menon 9e224c8ff1 bus: omap_l3_noc: switch over to relaxed variants of readl/writel
Currently we use __raw_readl and writel in this driver. Considering
there is no specific need for a memory barrier, replacing writel
with endian-neutral writel_relaxed and replacing __raw_readls with
the corresponding endian-neutral readl_relaxed allows us to have a
standard set of register operations for the driver.

While at it, simplify address computation using variables for
register.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:33:01 -05:00
Nishanth Menon ca6a34935c bus: omap_l3_noc: populate l3->dev and use it
l3->dev is not populated, so populate it and use it to print information
relevant to the device instead of using a generic pr_*.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:56 -05:00
Nishanth Menon 73cecc46dd bus: omap_l3_noc: remove iclk from omap_l3 struct
we do not use iclk directly anymore. And, even if we had to, we
should be using pm_runtime APIs to do the same to be completely SoC
independent.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:51 -05:00
Sricharan R c10d5c9e12 bus: omap_l3_noc: rename functions and data to omap_l3
Since omap_l3_noc driver is now being used for OMAP5 and reusable with
DRA7 and AM437x, using omap4 specific naming is misleading.

Signed-off-by: Sricharan R <r.sricharan@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:45 -05:00
Nishanth Menon c5f2aea0ef bus: omap_l3_noc: Fix copyright information
This is an embarrassing patch :(.

Texas Corporation does not make OMAP. Texas Instruments Inc does.

For that matter I dont seem to be able to find a Texas Corporation on
the internet either.

While at it, update coverage to the current year and update the template
to remove redundant information and use the standard boiler plate
licensing.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:33 -05:00
Peter Ujfalusi ae22598a11 drivers: bus: omap_l3: Change pr_crit() to dev_err() when IRQ request fails
Use dev_err() which will going to print the driver's name as well and the
KERN_ERR level is sufficient in this case (we also print via dev_err when
there is an error with the mem resources)

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:28 -05:00
Peter Ujfalusi 442a4da7ca drivers: bus: omap_l3: Remove the platform driver's remove function
It is NOP after the devm_* conversion.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:23 -05:00
Peter Ujfalusi a0ef78f353 drivers: bus: omap_l3: Convert to use devm_request_irq()
With this we can remove the free_irq() calls from probe and remove.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:15 -05:00
Peter Ujfalusi 56c4a0224a drivers: bus: omap_l3: Convert to use devm_ioremap_resource()
We can then remove the iounmap() calls from probe and remove.
Since the driver requests the resources via index we can do the mem resource
request within a for loop.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
2014-05-05 14:32:01 -05:00