linux.git/drivers/clk/at91, branch v4.5

clk: at91: Revert "keep slow clk enabled to prevent system hang"

2015-11-20T18:53:12+00:00

Commit dca1a4b5ff6e ("clk: at91: keep slow clk enabled to prevent system
hang") added a workaround for the slow clock as it is not properly handled
by its users.

Now that the slow clock is taken properly by the drivers, this workaround
is not necessary anymore, revert it.

Signed-off-by: Alexandre Belloni 
Acked-by: Michael Turquette 
Signed-off-by: Stephen Boyd

clk: at91: add generated clock driver

2015-10-01T19:48:11+00:00

Add a new type of clocks that can be provided to a peripheral.
In addition to the peripheral clock, this new clock that can use several
input clocks as parents can generate divided rates.
This would allow a peripheral to have finer grained clocks for generating
a baud rate, clocking an asynchronous part or having more
options in frequency.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
[sboyd@codeaurora.org: Transition to new clk_hw provider APIs]
Signed-off-by: Stephen Boyd

clk: at91: add PMC sama5d2 support

2015-10-01T19:39:44+00:00

Add support for the new sama5d2 SoC and adapt capabilities.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: modify PMC peripheral clock to deal with newer register layout

2015-10-01T19:39:43+00:00

As some more information is added to the PCR register, we'd better use
a copy of its content and modify just the peripheral-related bits.
Implement a read-modify-write for the enable() and disable() callbacks.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: cleanup PMC header file for PCR register fields

2015-10-01T19:39:41+00:00

Add _MASK and _OFFSET values and cleanup register fields layout.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: system: don't try to free_irq when there is no IRQ

2015-09-16T22:22:22+00:00

In the error path of at91_clk_register_system(), sys->irq is freed
unconditionally but it may not exist or be request at all.

Signed-off-by: Alexandre Belloni 
Acked-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: utmi: use pmc_read when the at91_pmc is available

2015-09-16T22:22:20+00:00

at91_pmc_read is a workaround to allow external drivers to acces some
registers of the PMC. There is no need for it in clk-utmi.c as we aready
have a pointer to the struct at91_pmc.

Signed-off-by: Alexandre Belloni 
Acked-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: Convert to clk_hw based provider APIs

2015-08-24T23:48:47+00:00

We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.

Acked-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: Replace __clk_get_num_parents with clk_hw_get_num_parents()

2015-08-24T23:48:43+00:00

Mostly converted with the following semantic patch:

@@
struct clk_hw *E;
@@

-__clk_get_num_parents(E->clk)
+clk_hw_get_num_parents(E)

Acked-by: Boris Brezillon 
Cc: Chao Xie 
Cc: Krzysztof Kozlowski 
Cc: Javier Martinez Canillas 
Cc: Tomasz Figa 
Cc: Maxime Ripard 
Cc: "Emilio López" 
Acked-by: Tero Kristo 
Cc: Geert Uytterhoeven 
Acked-by: Sylwester Nawrocki 
Signed-off-by: Stephen Boyd

clk: kill off set_irq_flags usage

2015-07-28T18:59:41+00:00

set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.

Signed-off-by: Rob Herring 
Acked-by: Boris Brezillon 
Cc: Mike Turquette 
Acked-by: Stephen Boyd 
Cc: linux-clk@vger.kernel.org
Signed-off-by: Stephen Boyd