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author | Tero Kristo <t-kristo@ti.com> | 2013-10-22 11:39:36 +0300 |
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committer | Mike Turquette <mturquette@linaro.org> | 2014-01-17 12:34:52 -0800 |
commit | 819b4861c18d602463cfe815041d11fd81002654 (patch) | |
tree | b9b83374a962896f3d3903dc16345a9dfa53ecca /include/linux/clk | |
parent | a8aceccb4d5db0acb476b74051525fb26f57f8ae (diff) | |
download | linux-stable-819b4861c18d602463cfe815041d11fd81002654.tar.gz linux-stable-819b4861c18d602463cfe815041d11fd81002654.tar.bz2 linux-stable-819b4861c18d602463cfe815041d11fd81002654.zip |
CLK: ti: add init support for clock IP blocks
ti_dt_clk_init_provider() can now be used to initialize the contents of
a single clock IP block. This parses all the clocks under the IP block
and calls the corresponding init function for them.
This patch also introduces a helper function for the TI clock drivers
to get register info from DT and append the master IP info to this.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'include/linux/clk')
-rw-r--r-- | include/linux/clk/ti.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/linux/clk/ti.h b/include/linux/clk/ti.h index df94c243205e..c6eded5eea76 100644 --- a/include/linux/clk/ti.h +++ b/include/linux/clk/ti.h @@ -36,7 +36,42 @@ struct ti_dt_clk { .node_name = name, \ } +/* Maximum number of clock memmaps */ +#define CLK_MAX_MEMMAPS 4 +typedef void (*ti_of_clk_init_cb_t)(struct clk_hw *, struct device_node *); + +/** + * struct clk_omap_reg - OMAP register declaration + * @offset: offset from the master IP module base address + * @index: index of the master IP module + */ +struct clk_omap_reg { + u16 offset; + u16 index; +}; + +/** + * struct ti_clk_ll_ops - low-level register access ops for a clock + * @clk_readl: pointer to register read function + * @clk_writel: pointer to register write function + * + * Low-level register access ops are generally used by the basic clock types + * (clk-gate, clk-mux, clk-divider etc.) to provide support for various + * low-level hardware interfaces (direct MMIO, regmap etc.), but can also be + * used by other hardware-specific clock drivers if needed. + */ +struct ti_clk_ll_ops { + u32 (*clk_readl)(void __iomem *reg); + void (*clk_writel)(u32 val, void __iomem *reg); +}; + +extern struct ti_clk_ll_ops *ti_clk_ll_ops; + +void __iomem *ti_clk_get_reg_addr(struct device_node *node, int index); void ti_dt_clocks_register(struct ti_dt_clk *oclks); +void ti_dt_clk_init_provider(struct device_node *np, int index); +int ti_clk_retry_init(struct device_node *node, struct clk_hw *hw, + ti_of_clk_init_cb_t func); #endif |