diff options
| -rw-r--r-- | drivers/clk/Makefile | 1 | ||||
| -rw-r--r-- | drivers/clk/ti/Makefile | 3 | ||||
| -rw-r--r-- | drivers/clk/ti/clk.c | 55 | ||||
| -rw-r--r-- | include/linux/clk/ti.h | 42 |
4 files changed, 101 insertions, 0 deletions
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index 972da894baa..13c1e91a86b 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -38,6 +38,7 @@ obj-$(CONFIG_PLAT_SAMSUNG) += samsung/ obj-$(CONFIG_COMMON_CLK_XGENE) += clk-xgene.o obj-$(CONFIG_COMMON_CLK_KEYSTONE) += keystone/ obj-$(CONFIG_ARCH_SHMOBILE_MULTI) += shmobile/ +obj-$(CONFIG_ARCH_OMAP2PLUS) += ti/ obj-$(CONFIG_X86) += x86/ diff --git a/drivers/clk/ti/Makefile b/drivers/clk/ti/Makefile new file mode 100644 index 00000000000..1825f7f4bdc --- /dev/null +++ b/drivers/clk/ti/Makefile @@ -0,0 +1,3 @@ +ifneq ($(CONFIG_OF),) +obj-y += clk.o +endif diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c new file mode 100644 index 00000000000..ef1a7cdecfd --- /dev/null +++ b/drivers/clk/ti/clk.c @@ -0,0 +1,55 @@ +/* + * TI clock support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/clk/ti.h> +#include <linux/of.h> + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +/** + * ti_dt_clocks_register - register DT alias clocks during boot + * @oclks: list of clocks to register + * + * Register alias or non-standard DT clock entries during boot. By + * default, DT clocks are found based on their node name. If any + * additional con-id / dev-id -> clock mapping is required, use this + * function to list these. + */ +void __init ti_dt_clocks_register(struct ti_dt_clk oclks[]) +{ + struct ti_dt_clk *c; + struct device_node *node; + struct clk *clk; + struct of_phandle_args clkspec; + + for (c = oclks; c->node_name != NULL; c++) { + node = of_find_node_by_name(NULL, c->node_name); + clkspec.np = node; + clk = of_clk_get_from_provider(&clkspec); + + if (!IS_ERR(clk)) { + c->lk.clk = clk; + clkdev_add(&c->lk); + } else { + pr_warn("failed to lookup clock node %s\n", + c->node_name); + } + } +} diff --git a/include/linux/clk/ti.h b/include/linux/clk/ti.h new file mode 100644 index 00000000000..df94c243205 --- /dev/null +++ b/include/linux/clk/ti.h @@ -0,0 +1,42 @@ +/* + * TI clock drivers support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef __LINUX_CLK_TI_H__ +#define __LINUX_CLK_TI_H__ + +#include <linux/clkdev.h> + +/** + * struct ti_dt_clk - OMAP DT clock alias declarations + * @lk: clock lookup definition + * @node_name: clock DT node to map to + */ +struct ti_dt_clk { + struct clk_lookup lk; + char *node_name; +}; + +#define DT_CLK(dev, con, name) \ + { \ + .lk = { \ + .dev_id = dev, \ + .con_id = con, \ + }, \ + .node_name = name, \ + } + + +void ti_dt_clocks_register(struct ti_dt_clk *oclks); + +#endif |