Messages in this thread | | | Subject | [PATCH 0/2] Common struct clk implementation, v13 | From | Jeremy Kerr <> | Date | Mon, 21 Feb 2011 10:50:58 +0800 |
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Hi all,
These patches are an attempt to allow platforms to share clock code. At present, the definitions of 'struct clk' are local to platform code, which makes allocating and initialising cross-platform clock sources difficult, and makes it impossible to compile a single image containing support for two ARM platforms with different struct clks.
The three patches are for the architecture-independent kernel code, introducing the common clk infrastructure. The changelog for the first patch includes details about the new clock definitions.
Many thanks to the following for their input: * Benjamin Herrenschmidt <benh@kernel.crashing.org> * Ben Dooks <ben-linux@fluff.org> * Baruch Siach <baruch@tkos.co.il> * Russell King <linux@arm.linux.org.uk> * Uwe Kleine-König <u.kleine-koenig@pengutronix.de> * Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com> * Vincent Guittot <vincent.guittot@linaro.org> * Sascha Hauer <s.hauer@pengutronix.de> * Ryan Mallon <ryan@bluewatersys.com> * Colin Cross <ccross@google.com> * Jassi Brar <jassisinghbrar@gmail.com> * Saravana Kannan <skannan@codeaurora.org>
Cheers,
Jeremy
-- v13: * Don't expose __clk_get and clk_put - prototypes in clkdev.c instead * Add might_sleep to clk_set_rate * Comment clarifications & fixups * Remove zero initialisers * Fold warnings into main clk.c change
v12: * Always refcount, even when enable/prepare ops are NULL * Unify prepare & enable count checking * Update comments for prepare/unprepare * Use spin_{lock,unlock}_irqsave * Change clk_put to __clk_put, and use the shared clk_put
v11: * add prepare/unprepare for non-atomic switching, document atomicity * move to drivers/clk/
v10: * comment fixups, from Uwe's review * added DEFINE_CLK_FIXED
v9: * comment improvements * kerneldoc fixups * add WARN_ON to clk_disable
v8: * add atomic clocks, and locking wrappers * expand comments on clk and clk_ops
v7: * change CLK_INIT to initialise clk->mutex statically
v6: * fixed up references to 'clk_operations' in the changelog
v5: * uninline main API, and share definitions with !USE_COMMON_STRUCT_CLK * add __clk_get * delay mutex init * kerneldoc for struct clk
v4: * use mutex for enable/disable locking * DEFINE_CLK -> INIT_CLK, and pass the clk name for mutex init * struct clk_operations -> struct clk_ops
v3: * do clock usage refcounting in common code * provide sample port
v2: * no longer ARM-specific * use clk_operations
--- Jeremy Kerr (2): Add a common struct clk clk: Generic support for fixed-rate clocks
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