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Date: Tue, 9 Jun 2015 17:38:00 +0200 From: Matthias Brugger <matthias.bgg@...il.com> To: mturquette@...aro.org, sboyd@...eaurora.org, matthias.bgg@...il.com Cc: s.hauer@...gutronix.de, jamesjj.liao@...iatek.com, henryc.chen@...iatek.com, linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, manabian@...il.com Subject: [PATCH v3 0/3] clk: Add regmap support for basic clocks This patch set adds regmap support for the simple clock multiplexer, the divider clock and the clock gate. Regmap use, apart from a pointer to the regmap struct needs an offset value to know where in the regmap it has to read/write. We add both fields to the corresponding structs. The driver will distinguish between a clock which is based on regmap or not through a flag specified in the clock hardware struct. The approach does not break the existing clock framework API but adds new functions for registering regmap clocks. Unregistering the clocks is independent of the use of regmap or not, so that no new functions were implemented. As an example user of the regmap clock multiplexer, it was implemented on the mt8135. When accepted it will also be applied to the other Mediatek SoCs. Other possible user are Qualcomm SoCs which up to now implement their own regmap based clock multiplexer. This patch set is based on linux next. To get the mt8135 eval board up and running, we need to enable the clock support [1] and use the two clocks for the uart port [2]. Any comments welcome. [1] https://patchwork.kernel.org/patch/6261141/ [2] https://patchwork.kernel.org/patch/6261151/ Changes for v3: - rebase against linux-next - provide regmap access to all three clock types in a unified way Changes for v2: - use regmap_update_bits instead of read-write - fix flag check - add union in struct clk_mux - fix typo in commit message --- Matthias Brugger (3): clk: Add regmap support clk: mediatek: Add support for clk-mux using regmap clk: mediatek: Use regmap clk-mux for mt8135 drivers/clk/Makefile | 1 + drivers/clk/clk-divider.c | 71 ++++++++++++++++++----- drivers/clk/clk-gate.c | 60 ++++++++++++++++---- drivers/clk/clk-io.c | 62 ++++++++++++++++++++ drivers/clk/clk-io.h | 13 +++++ drivers/clk/clk-mux.c | 94 ++++++++++++++++++++++++++----- drivers/clk/mediatek/clk-mt8135.c | 21 +++---- drivers/clk/mediatek/clk-mtk.c | 37 ++++++++++++ drivers/clk/mediatek/clk-mtk.h | 26 +++++++++ include/linux/clk-provider.h | 115 +++++++++++++++++++++++++++++++++++++- 10 files changed, 443 insertions(+), 57 deletions(-) create mode 100644 drivers/clk/clk-io.c create mode 100644 drivers/clk/clk-io.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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