From: Mike Turquette mturquette@ti.com
The common clk framework is an attempt to define a generic struct clk which most platforms can use to build a clk tree and perform a set of well-defined operations.
The previous patchset, v3, can be found at, http://article.gmane.org/gmane.linux.kernel/1218622
New stuff in v4: * clk rate change notifiers * clk debug info via debugfs (instead of sysfs) * lots of bug fixes
Stuff that is known to be missing in v4: * basic mux and divider clk types * fix for migrating clk_prepare_count/clk_enable_count in clk_set_parent * minor rework comments from v3 * Documentation/clk.txt needs love
All of the mising items above will be rolled into v5 ASAP. I wanted to go ahead and push out the new notifier changes for review and gather comments on those since those were a big gap in the v3 patchset.
Paul W. also had some good comments about the greater clk API, and the opportunity to fix some of that stuff while this patchset is still under discussion. I didn't address those here because they require more thought, and more comments from reviewers.
Finally, OMAP4 support for the common struct clk will be posted immediately after this patch series to LAKML and LOML, along with some hack patches that show how to use the recursive clk_set_rate for propagating rate changes up the tree for CPUfreq and how to use the new clk rate change notifiers in a driver.
Mike Turquette (6): clk: Kconfig: add entry for HAVE_CLK_PREPARE Documentation: common clk API clk: introduce the common clock framework clk: introduce rate change notifiers clk: basic gateable and fixed-rate clks clk: export the clk tree topology to debugfs
Documentation/clk.txt | 312 +++++++++++++++ drivers/clk/Kconfig | 23 ++ drivers/clk/Makefile | 4 +- drivers/clk/clk-basic.c | 208 ++++++++++ drivers/clk/clk.c | 992 +++++++++++++++++++++++++++++++++++++++++++++++ include/linux/clk.h | 230 +++++++++++- 6 files changed, 1765 insertions(+), 4 deletions(-) create mode 100644 Documentation/clk.txt create mode 100644 drivers/clk/clk-basic.c create mode 100644 drivers/clk/clk.c