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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-24 06:56:08 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-24 06:56:08 +0400 |
commit | 7e21774db5cc9cf8fe93a64a2f0c6cf47db8ab24 (patch) | |
tree | 460812792bc3b23789a83968b7bad840cc3eb047 /drivers/clk/hisilicon/clk.c | |
parent | 0ba3307a8ec35252f7b1e222e32889a6f3d9ceb3 (diff) | |
parent | 2e84d75116c17c2034e917b411250d2d11755435 (diff) | |
download | linux-7e21774db5cc9cf8fe93a64a2f0c6cf47db8ab24.tar.xz |
Merge tag 'clk-for-linus-3.14-part1' of git://git.linaro.org/people/mike.turquette/linux
Pull clk framework changes from Mike Turquette:
"The first half of the clk framework pull request is made up almost
entirely of new platform/driver support. There are some conversions
of existing drivers to the common-clock Device Tree binding, and a few
non-critical fixes to the framework.
Due to an entirely unnecessary cyclical dependency with the arm-soc
tree this pull request is broken into two pieces. The second piece
will be sent out after arm-soc sends you the pull request that merged
in core support for the HiSilicon 3620 platform. That same pull
request from arm-soc depends on this pull request to merge in those
HiSilicon bits without causing build failures"
[ Just did the ARM SoC merges, so getting ready for the second clk tree
pull request - Linus ]
* tag 'clk-for-linus-3.14-part1' of git://git.linaro.org/people/mike.turquette/linux: (97 commits)
devicetree: bindings: Document qcom,mmcc
devicetree: bindings: Document qcom,gcc
clk: qcom: Add support for MSM8660's global clock controller (GCC)
clk: qcom: Add support for MSM8974's multimedia clock controller (MMCC)
clk: qcom: Add support for MSM8974's global clock controller (GCC)
clk: qcom: Add support for MSM8960's multimedia clock controller (MMCC)
clk: qcom: Add support for MSM8960's global clock controller (GCC)
clk: qcom: Add reset controller support
clk: qcom: Add support for branches/gate clocks
clk: qcom: Add support for root clock generators (RCGs)
clk: qcom: Add support for phase locked loops (PLLs)
clk: qcom: Add a regmap type clock struct
clk: Add set_rate_and_parent() op
reset: Silence warning in reset-controller.h
clk: sirf: re-arch to make the codes support both prima2 and atlas6
clk: composite: pass mux_hw into determine_rate
clk: shmobile: Fix MSTP clock array initialization
clk: shmobile: Fix MSTP clock index
ARM: dts: Add clock provider specific properties to max77686 node
clk: max77686: Register OF clock provider
...
Diffstat (limited to 'drivers/clk/hisilicon/clk.c')
-rw-r--r-- | drivers/clk/hisilicon/clk.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c new file mode 100644 index 000000000000..a3a7152c92d9 --- /dev/null +++ b/drivers/clk/hisilicon/clk.c @@ -0,0 +1,171 @@ +/* + * Hisilicon clock driver + * + * Copyright (c) 2012-2013 Hisilicon Limited. + * Copyright (c) 2012-2013 Linaro Limited. + * + * Author: Haojian Zhuang <haojian.zhuang@linaro.org> + * Xin Li <li.xin@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <linux/kernel.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/slab.h> +#include <linux/clk.h> + +#include "clk.h" + +static DEFINE_SPINLOCK(hisi_clk_lock); +static struct clk **clk_table; +static struct clk_onecell_data clk_data; + +void __init hisi_clk_init(struct device_node *np, int nr_clks) +{ + clk_table = kzalloc(sizeof(struct clk *) * nr_clks, GFP_KERNEL); + if (!clk_table) { + pr_err("%s: could not allocate clock lookup table\n", __func__); + return; + } + clk_data.clks = clk_table; + clk_data.clk_num = nr_clks; + of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); +} + +void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *clks, + int nums, void __iomem *base) +{ + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_fixed_rate(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + clks[i].fixed_rate); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + } +} + +void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *clks, + int nums, void __iomem *base) +{ + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_fixed_factor(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, clks[i].mult, + clks[i].div); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + } +} + +void __init hisi_clk_register_mux(struct hisi_mux_clock *clks, + int nums, void __iomem *base) +{ + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_mux(NULL, clks[i].name, clks[i].parent_names, + clks[i].num_parents, clks[i].flags, + base + clks[i].offset, clks[i].shift, + clks[i].width, clks[i].mux_flags, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + clk_table[clks[i].id] = clk; + } +} + +void __init hisi_clk_register_divider(struct hisi_divider_clock *clks, + int nums, void __iomem *base) +{ + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_divider_table(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].shift, clks[i].width, + clks[i].div_flags, + clks[i].table, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + clk_table[clks[i].id] = clk; + } +} + +void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks, + int nums, void __iomem *base) +{ + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = hisi_register_clkgate_sep(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].bit_idx, + clks[i].gate_flags, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + clk_table[clks[i].id] = clk; + } +} |