linux.git/drivers/clk/sunxi, branch v4.9

clk: sunxi: Fix M factor computation for APB1

2016-11-04T07:49:46+00:00

commit cfa636886033 ("clk: sunxi: factors: Consolidate get_factors
parameters into a struct") introduced a regression for m factor
computation in sun4i_get_apb1_factors function.

The old code reassigned the "parent_rate" parameter to the targeted
divisor value and was buggy for the returned frequency but not for the
computed factors. Now, returned frequency is good but m factor is
incorrectly computed (its max value 31 is always set resulting in a
significantly slower frequency than the requested one...)

This patch simply restores the original proper computation for m while
keeping the good changes for returned rate.

Fixes: cfa636886033 ("clk: sunxi: factors: Consolidate get_factors parameters into a struct")
Signed-off-by: Stéphan Rafin 
Signed-off-by: Maxime Ripard

Merge branch 'clk-fixes' into clk-next

2016-09-08T19:57:10+00:00

* clk-fixes:
  clk: sunxi-ng: Fix wrong reset register offsets
  clk: sunxi-ng: nk: Make ccu_nk_find_best static
  clk: sunxi-ng: Fix inverted test condition in ccu_helper_wait_for_lock
  clk: sunxi: Fix return value check in sun8i_a23_mbus_setup()
  clk: sunxi: pll2: Fix return value check in sun4i_pll2_setup()

clk: sunxi: apb0: Use new macro CLK_OF_DECLARE_DRIVER

2016-08-13T01:01:50+00:00

This driver initializes a clock provider via sun8i_a23_apb0_setup
and then continues the initialization on sun8i_a23_apb0_clk_probe.

Use the new macro to notify the clk subsystem about this behaviour.

Signed-off-by: Ricardo Ribalda Delgado 
Signed-off-by: Stephen Boyd

clk: sunxi: mod0: Use new macro CLK_OF_DECLARE_DRIVER

2016-08-13T01:01:20+00:00

This driver initializes a clock provider via sun4i_a10_mod0_setup
and then continues the initialization on sun4i_a10_mod0_clk_probe.

Use the new macro to notify the clk subsystem about this behaviour.

Signed-off-by: Ricardo Ribalda Delgado 
Signed-off-by: Stephen Boyd

clk: sunxi: Fix return value check in sun8i_a23_mbus_setup()

2016-08-08T17:27:33+00:00

In case of error, the function of_io_request_and_map() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Signed-off-by: Wei Yongjun 
Signed-off-by: Maxime Ripard

clk: sunxi: pll2: Fix return value check in sun4i_pll2_setup()

2016-08-08T17:27:33+00:00

In case of error, the functions clk_register_composite() and
clk_register_divider() returns ERR_PTR() and never returns NULL.
The NULL test in the return value check should be replaced with
IS_ERR().

Signed-off-by: Wei Yongjun 
Signed-off-by: Maxime Ripard

Merge branch 'clk-fixes' into clk-next

2016-07-22T00:30:54+00:00

clk: sunxi: make clk-* explicitly non-modular

2016-07-06T22:20:34+00:00

We have the following file --> Kconfig mapping:

sunxi/clk-factors.c              obj-y
sunxi/clk-sun6i-apb0-gates.c     CONFIG_MFD_SUN6I_PRCM (bool)
sunxi/clk-sun6i-apb0.c           CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun6i-ar100.c          CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun8i-apb0.c           CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun9i-mmc.c            obj-y

Hence none of these are being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the drivers there is no doubt they are builtin-only.  All
drivers get mostly the same changes, so they are handled in batch.

Changes are (1) convert to builtin_platform_register, (2) use the
init.h header, (3) delete the MODULE_LICENCE/MODULE_AUTHOR and
associated tags, and (4) delete any ".remove" functions.

There was a stray module.h in a file not using any init.h or
module.h stuff, so we simply removed that one.

In two cases, we explicitly disallow a driver unbind, since that
doesn't have a sensible use case anyway, and it allows us to drop
the ".remove" code for non-modular drivers.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

We delete the MODULE_LICENSE etc. tags since all that information
is already contained at the top of each file in the comments.

Acked-by: Boris Brezillon 
Cc: Chen-Yu Tsai 
Cc: "Emilio López" 
Cc: Stephen Boyd 
Acked-by: Maxime Ripard 
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker 
Signed-off-by: Michael Turquette 
Link: lkml.kernel.org/r/20160704211220.5685-9-paul.gortmaker@windriver.com

clk: sunxi: remove unused variable

2016-06-16T07:18:29+00:00

The only use of the local num_parents variable was remove,
so we now get a warning:

drivers/clk/sunxi/clk-sun4i-tcon-ch1.c: In function 'tcon_ch1_get_parent':
drivers/clk/sunxi/clk-sun4i-tcon-ch1.c:82:6: error: unused variable 'num_parents' [-Werror=unused-variable]

This removes the variable.

Signed-off-by: Arnd Bergmann 
Fixes: 4de2d58bc973 ("clk: sunxi: tcon-ch1: Do not return a negative error in get_parent")
Signed-off-by: Maxime Ripard

clk: sunxi: display: Add per-clock flags

2016-06-10T09:49:47+00:00

The TCON channel 0 clock that is the parent clock of our pixel clock is
expected to change its rate depending on the resolution we want to output
in our display engine.

However, since it's only a mux, the only way it can do that is by changing
its parents rate.

Allow to give flags in our display clocks description, and add the
CLK_SET_RATE_PARENT flag for the TCON channel 0 flag.

Fixes: a3b4956ee6d9 ("clk: sunxi: display: Add per-clock flags")
Acked-by: Chen-Yu Tsai 
Signed-off-by: Maxime Ripard