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path: root/arch/sh/include/asm/clock.h (follow)
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2009-06-11sh: add enable()/disable()/set_rate() to div6 codeMagnus Damm1-0/+4
This patch updates the div6 clock helper code to add support for enable(), disable() and set_rate() callbacks. Needed by the camera clock enabling board code on Migo-R. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11sh: clock div6 helper codeMagnus Damm1-0/+10
This patch adds div6 clock helper code. The div6 clocks are simply 6-bit divide-by-n modules where n is 1 to 64. Needed for vclk on sh7722, sh7723, sh7343 and sh7366. sh7724 needs this even more for vclk, fclka, fclkb, irdaclk and spuclk. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-01sh: shared div4 clock codeMagnus Damm1-0/+15
Add shared code for 4-bit divisor clocks. Processor specific code can use SH_CLK_DIV4() to initialize div4 clocks, and then use sh_clk_div4_register() for registration. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-01sh: shared mstp32 clock codeMagnus Damm1-0/+13
Add shared 32-bit module stop bit clock support. Processor specific code can use SH_CLK_MSTP32() to initialize module stop bit clocks, and then use sh_clk_mstp32() for registration. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-26sh: remove clk_ops->build_rate_table()Magnus Damm1-1/+0
This patch removes the ->build_rate_table() callback, ->recalc() may instead be used for this purpose. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-26sh: add shared clock framework frequency table codeMagnus Damm1-0/+18
Add SuperH-specific clock framework helper functions: - clk_rate_table_build() - build cpufreq table from divisors/multipliers - clk_rate_table_round() - use cpufreq table to find matching frequency Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-14sh: clkfwk: Add MSTP bits to SH7785 clock framework.Paul Mundt1-0/+3
This plugs in all of the MSTP functions in to the clock framework, and hands them off to the platform devices that want them. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-13sh: clkfwk: Map tree hierarchy in debugfs.Paul Mundt1-0/+1
This adopts the OMAP clock framework debugfs bits and replaces the aging procfs bits. The procfs clocks entry was primarily a debugging aid, and used to be tied in to cpuinfo before the clock list grew too unweildly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-13sh: clkfwk: rate table construction and rounding for SH7785.Paul Mundt1-0/+1
This adds support for constructing a rate table by looking at potential divisors for a specified clock. Each FQRMR clock is given its own table. Presently each table is rebuilt when the parent propagates down a new rate, so some more logic needs to be added to do this more intelligently. Additionally, a fairly generic round_rate() implementation is then layered on top of it, which subsequently provides us with cpufreq support. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-13sh: clkfwk: Update SH7785 for refactored clock framework.Paul Mundt1-0/+2
This updates the SH7785 CPU code as well as the SH7785LCR board support code for making use of the newly refactored clock framework. Support for the legacy CPG clocks is dropped at this point, with the extal frequency fed in from the board code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-13sh: clkfwk: Rework legacy CPG clock handling.Paul Mundt1-1/+4
This moves out the old legacy CPG clocks to their own file, and converts over the existing users. With these clocks going away and each CPU dealing with them on their own, CPUs can gradually move over to the new interface. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Wire up clk_get_sys() support.Paul Mundt1-0/+7
This stubs in clk_get_sys() from the ARM clkdev implementation. Tentatively conver the clk_get() lookup code to use this, and once the rest of the in-tree users are happy with this, it can replace the fallback lookups. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Kill off clk_recalc_rate().Paul Mundt1-1/+0
The only user for this is the SH-Mobile r_clk, which is now added as a root clock and can be kicked via propagate_rate() as usual. Given that, there is no longer any need for the special clk_recalc_rate(), so we kill it off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Improve the generic clk_set_parent() implementation.Paul Mundt1-0/+1
This causes the generic clk_set_parent() implementation to be a bit more intelligent. A clk_reparent() is added to move the clock over to the new parent's sibling list, which then allows the generic rate propagation code to succeed. This also becomes a nop if the new and old parents are unchanged. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Fix up the clk_enable() error path.Paul Mundt1-1/+1
There are a couple of instances where a clk_enable() can fail, which the SH-Mobile code presently handles, but doesn't get reported all the way back up. This fixes up the return type so the errors make it all the way down to the drivers. Additionally, we now also error out properly if the parent enable fails. Prep work for aggressively turning off unused clocks on boot. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Convert SH-Mobile CPUs to use CLK_ENABLE_ON_INIT.Paul Mundt1-16/+0
Kill off all of the clk_always_enabled leftovers and use the new flag directly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Consolidate the ALWAYS_ENABLED / NEEDS_INIT mess.Paul Mundt1-2/+1
There is no real distinction here in behaviour, either a clock needs to be enabled on initialiation or not. The ALWAYS_ENABLED flag was always intended to only apply to clocks that were physically always on and could simply not be disabled at all from software. Unfortunately over time this was abused and the meaning became a bit blurry. So, we kill off both of all of those paths now, as well as the newer NEEDS_INIT flag, and consolidate on a CLK_ENABLE_ON_INIT. Clocks that need to be enabled on initialization can set this, and it will purposely enable them and bump the refcount up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: refactor rate propagation.Paul Mundt1-3/+6
This resyncs the rate propagation strategy with the scheme used by the OMAP clock framework. Child clocks are tracked on a list under each parent and propagation happens there specifically rather than constantly iterating over the global clock list. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Add a followparent_recalc() helper.Paul Mundt1-1/+1
This adds a followparent_recalc() helper for clocks that just follow the parent's rate. Switch over the few CPUs that use this scheme for some of their clocks. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-12sh: clkfwk: Make recalc return an unsigned long.Paul Mundt1-1/+2
This is prep work for cleaning up some of the rate propagation bits. Trivial conversion. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08sh: clock framework update, fix count and kill off krefMagnus Damm1-2/+2
This patch updates the clock framework use count code. With this patch the enable() and disable() callbacks only get called when counting from and to zero. While at it the kref stuff gets replaced with an int. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-11sh: clkfwk: add clk_set_parent/clk_get_parentFrancesco VIRLINZI1-0/+1
This patch adds the clk_set_parent/clk_get_parent routines to the sh clock framework. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: fixup many sparse errors.Paul Mundt1-0/+1
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-29sh: migrate to arch/sh/include/Paul Mundt1-0/+97
This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac. Most of the moving about was done with Sam's directions at: http://marc.info/?l=linux-sh&m=121724823706062&w=2 with subsequent hacking and fixups entirely my fault. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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