Laurent Pinchart [Thu, 28 Nov 2013 17:11:46 +0000 (18:11 +0100)]
serial: sh-sci: Convert to clk_prepare/unprepare
Turn clk_enable() and clk_disable() calls into clk_prepare_enable() and
clk_disable_unprepare() to get ready for the migration to the common
clock framework.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Laurent Pinchart [Thu, 28 Nov 2013 17:11:45 +0000 (18:11 +0100)]
serial: sh-sci: Don't enable/disable port from within break timer
The break timer accesses hardware registers and thus requires the port
to be enabled. It currently ensures this by enabling the port at the
beginning of the timer handler, and disabling it at the end. However,
the enable/disable operations call the runtime PM sync functions, which
are not allowed in atomic context. The current situation is thus broken.
This change relies on non-atomic code to enable/disable the port. The
break timer will only be started from the IRQ handler, which already
runs with the port enabled. We just need to ensure that the port won't
be disabled with the timer running, and that's easily done by just
cancelling the timer in the port disable function.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Laurent Pinchart [Thu, 17 Oct 2013 21:54:07 +0000 (23:54 +0200)]
clk: shmobile: Add DIV6 clock support
DIV6 clocks are divider gate clocks controlled through a single
register. The divider is expressed on 6 bits, hence the name, and can
take values from 1/1 to 1/64.
Those clocks are found on Renesas ARM SoCs.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
The R-Car Gen2 SoCs (R8A7790 and R8A7791) have several clocks that are
too custom to be supported in a generic driver. Those clocks can be
divided in two categories:
- Fixed rate clocks with multiplier and divisor set according to boot
mode configuration
- Custom divider clocks with SoC-specific divider values
This driver supports both.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Kumar Gala <galak@codeaurora.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Laurent Pinchart [Wed, 11 Dec 2013 03:26:26 +0000 (04:26 +0100)]
sh-pfc: Support GPIO to IRQ mapping specified IRQ resources
On non-DT platforms IRQ controllers associated with the GPIOs have a
fixed IRQ base value known at compile time. The sh-pfc driver translates
GPIO number to IRQ numbers using a hardcoded table. This mechanism
breaks on DT platforms, as the IRQ base values are dynamic in that case.
Fix this by specifying IRQs associated with GPIOs in IRQ resources,
populated automatically from the device tree. When IRQ resources are
specified the driver requires one IRQ resource per GPIO able to generate
an interrupt, and uses the translation table to compute the IRQ resource
offset instead of the IRQ number.
pinctrl: pinconf: remove checks on ops->pin_config_get
ops->pin_config_get() is only used in one specific path that will only be taken
for generic pinconf drivers (ops->is_generic == true) when dumping the pinconf
by using debugfs.
By removing the check in pinconf_check_ops(), let's stop pressuring people to
write a pin_config_get() function that will never be used and so will probably
never be tested.
Removing the check in pinconf_pins_show() allows driver to not implement
pin_config_get() but still get a dump of the pinconf in debugfs by implementing
pin_config_dbg_show().
Finally, not implementing pin_config_get() now results in returning -ENOTSUPP
instead of -EINVAL. While this doesn't have any real impact for now, this feels
more right.
Laurent Pinchart [Wed, 11 Dec 2013 12:40:31 +0000 (13:40 +0100)]
serial: sh-sci: Fix warnings due to improper casts and printk formats
Use the %zu and %pad printk specifiers to print size_t and dma_addr_t
variables, and cast pointers to uintptr_t instead of unsigned int where
applicable. This fixes warnings on platforms where pointers and/or
dma_addr_t have a different size than int.
Linus Walleij [Mon, 9 Dec 2013 08:26:01 +0000 (09:26 +0100)]
pinctrl: make the MSM SoC driver depend on OF
We had a compilation failure on x86_64 due to missing OF support
as this was an implicit dependency. Add an explicit dependency
on OF and OF_IRQ on the SoC driver.
pinctrl: sh-pfc: pfc-r8a7790: Add VIN2 and VIN3 pins
There are VIN2 and VIN3 channels available on the R8A7790 SoC.
VIN2 supports 4/8/16/18/24-bit data, while VIN3 supports 8-bit.
Add both here, covering all possible data pin configurations.
pinctrl: sh-pfc: pfc-r8a7790: Reorganize VIN0 data pins
This reorganizes and renames VIN0 data pin groups to cover
all possible configurations. There's total of eight data
pin groups, one per each configuration. Most of the groups
share the same pin/mux array. Only the 18-bit configuration
needs a separate pin/mux array since in combines interleaved
data pins.
Linus Walleij [Mon, 9 Dec 2013 08:26:01 +0000 (09:26 +0100)]
pinctrl: make the MSM SoC driver depend on OF
We had a compilation failure on x86_64 due to missing OF support
as this was an implicit dependency. Add an explicit dependency
on OF and OF_IRQ on the SoC driver.
Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Total failure with older approaches: what we need to do is
have the *SoC subdriver* depend on OF and OF_IRQ. This is
because the placeholder bool PINCTRL_MSM cannot cascade its
dependencies when a subdriver selects it, Kconfig is smart
but not that smart.
ChangeLog v1->v2:
- OK so "depends on OF" did not work here let's try to simply
select OF and OF_IRQ for this then? It's one of those
"warning: (PINCTRL_MSM8X74) selects PINCTRL_MSM which has
unmet direct dependencies (PINCTRL && OF)" that I simply
cannot find my way out of :-/
Magnus Damm [Wed, 27 Nov 2013 23:15:18 +0000 (08:15 +0900)]
ARM: shmobile: Use r8a7779 suffix for INTC compat string
Add "renesas,intc-irqpin-r8a7779" to the compatible string for the
IRQ pins in case of r8a7779 INTC. This makes the INTC irqpin follow
the same style as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Magnus Damm [Wed, 27 Nov 2013 23:15:11 +0000 (08:15 +0900)]
ARM: shmobile: Use r8a7778 suffix for INTC compat string
Add "renesas,intc-irqpin-r8a7778" to the compatible string for the
IRQ pins in case of r8a7778 INTC. This makes the INTC irqpin follow
the same style as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Magnus Damm [Wed, 27 Nov 2013 23:15:04 +0000 (08:15 +0900)]
ARM: shmobile: Use r8a7740 suffix for INTC compat string
Add "renesas,intc-irqpin-r8a7740" to the compatible string for the
IRQ pins in case of r8a7740 INTC. This makes the INTC irqpin follow
the same style as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Magnus Damm [Wed, 27 Nov 2013 23:14:57 +0000 (08:14 +0900)]
ARM: shmobile: Use sh73a0 suffix for INTC compat string
Add "renesas,intc-irqpin-sh73a0" to the compatible string for the
IRQ pins in case of sh73a0 INTC. This makes the INTC irqpin follow
the same style as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Laurent Pinchart [Tue, 19 Nov 2013 12:59:49 +0000 (13:59 +0100)]
ARM: shmobile: armadillo-reference: Use low level IRQ for ST1231
The device is configured to generate an active-low interrupt signal that
needs to be acknowledged by the host. Configure the IRQ to trigger on
low level.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Magnus Damm [Wed, 20 Nov 2013 00:07:40 +0000 (09:07 +0900)]
ARM: shmobile: Use r8a7790 suffix for IRQC compat string
Add "renesas,irqc-r8a7790" to the compatible string for IRQC
in case of r8a7790. This makes the IRQC follow the same style
as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Magnus Damm [Wed, 20 Nov 2013 00:05:53 +0000 (09:05 +0900)]
ARM: shmobile: Use r8a7790 suffix for MMCIF compat string
Add "renesas,mmcif-r8a7790" to the compatible string for MMCIF
in case of r8a7790. This makes the MMCIF follow the same style
as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Magnus Damm [Wed, 20 Nov 2013 04:18:05 +0000 (13:18 +0900)]
ARM: shmobile: Use r8a7791 suffix for IRQC compat string
Add "renesas,irqc-r8a7791" to the compatible string for IRQC
in case of r8a7791. This makes the IRQC follow the same style
as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
ARM: shmobile: kzm9g-reference: Use falling edge IRQ for LAN9221
The device is configured to generate an active-low interrupt signal that
is automatically deasserted without requiring any action from the host.
Configure the IRQ to trigger on falling edge.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
ARM: shmobile: bockw-reference: Use falling edge IRQ for LAN9221
The device is configured to generate an active-low interrupt signal that
is automatically deasserted without requiring any action from the host.
Configure the IRQ to trigger on falling edge.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
ARM: shmobile: marzen-reference: Use falling edge IRQ for LAN9221
The device is configured to generate an active-low interrupt signal that
is automatically deasserted without requiring any action from the host.
Use falling edge trigger as that is the configuration currently used on
the board.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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