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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 18:56:08 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 18:56:08 -0800 |
commit | 7e21774db5cc9cf8fe93a64a2f0c6cf47db8ab24 (patch) | |
tree | 460812792bc3b23789a83968b7bad840cc3eb047 /drivers/clk/qcom/clk-rcg.h | |
parent | 0ba3307a8ec35252f7b1e222e32889a6f3d9ceb3 (diff) | |
parent | 2e84d75116c17c2034e917b411250d2d11755435 (diff) | |
download | blackbird-op-linux-7e21774db5cc9cf8fe93a64a2f0c6cf47db8ab24.tar.gz blackbird-op-linux-7e21774db5cc9cf8fe93a64a2f0c6cf47db8ab24.zip |
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/qcom/clk-rcg.h')
-rw-r--r-- | drivers/clk/qcom/clk-rcg.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/drivers/clk/qcom/clk-rcg.h b/drivers/clk/qcom/clk-rcg.h new file mode 100644 index 000000000000..1d6b6dece328 --- /dev/null +++ b/drivers/clk/qcom/clk-rcg.h @@ -0,0 +1,159 @@ +/* + * Copyright (c) 2013, The Linux Foundation. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + */ + +#ifndef __QCOM_CLK_RCG_H__ +#define __QCOM_CLK_RCG_H__ + +#include <linux/clk-provider.h> +#include "clk-regmap.h" + +struct freq_tbl { + unsigned long freq; + u8 src; + u8 pre_div; + u16 m; + u16 n; +}; + +/** + * struct mn - M/N:D counter + * @mnctr_en_bit: bit to enable mn counter + * @mnctr_reset_bit: bit to assert mn counter reset + * @mnctr_mode_shift: lowest bit of mn counter mode field + * @n_val_shift: lowest bit of n value field + * @m_val_shift: lowest bit of m value field + * @width: number of bits in m/n/d values + * @reset_in_cc: true if the mnctr_reset_bit is in the CC register + */ +struct mn { + u8 mnctr_en_bit; + u8 mnctr_reset_bit; + u8 mnctr_mode_shift; +#define MNCTR_MODE_DUAL 0x2 +#define MNCTR_MODE_MASK 0x3 + u8 n_val_shift; + u8 m_val_shift; + u8 width; + bool reset_in_cc; +}; + +/** + * struct pre_div - pre-divider + * @pre_div_shift: lowest bit of pre divider field + * @pre_div_width: number of bits in predivider + */ +struct pre_div { + u8 pre_div_shift; + u8 pre_div_width; +}; + +/** + * struct src_sel - source selector + * @src_sel_shift: lowest bit of source selection field + * @parent_map: map from software's parent index to hardware's src_sel field + */ +struct src_sel { + u8 src_sel_shift; +#define SRC_SEL_MASK 0x7 + const u8 *parent_map; +}; + +/** + * struct clk_rcg - root clock generator + * + * @ns_reg: NS register + * @md_reg: MD register + * @mn: mn counter + * @p: pre divider + * @s: source selector + * @freq_tbl: frequency table + * @clkr: regmap clock handle + * @lock: register lock + * + */ +struct clk_rcg { + u32 ns_reg; + u32 md_reg; + + struct mn mn; + struct pre_div p; + struct src_sel s; + + const struct freq_tbl *freq_tbl; + + struct clk_regmap clkr; +}; + +extern const struct clk_ops clk_rcg_ops; + +#define to_clk_rcg(_hw) container_of(to_clk_regmap(_hw), struct clk_rcg, clkr) + +/** + * struct clk_dyn_rcg - root clock generator with glitch free mux + * + * @mux_sel_bit: bit to switch glitch free mux + * @ns_reg: NS register + * @md_reg: MD0 and MD1 register + * @mn: mn counter (banked) + * @s: source selector (banked) + * @freq_tbl: frequency table + * @clkr: regmap clock handle + * @lock: register lock + * + */ +struct clk_dyn_rcg { + u32 ns_reg; + u32 md_reg[2]; + + u8 mux_sel_bit; + + struct mn mn[2]; + struct pre_div p[2]; + struct src_sel s[2]; + + const struct freq_tbl *freq_tbl; + + struct clk_regmap clkr; +}; + +extern const struct clk_ops clk_dyn_rcg_ops; + +#define to_clk_dyn_rcg(_hw) \ + container_of(to_clk_regmap(_hw), struct clk_dyn_rcg, clkr) + +/** + * struct clk_rcg2 - root clock generator + * + * @cmd_rcgr: corresponds to *_CMD_RCGR + * @mnd_width: number of bits in m/n/d values + * @hid_width: number of bits in half integer divider + * @parent_map: map from software's parent index to hardware's src_sel field + * @freq_tbl: frequency table + * @clkr: regmap clock handle + * @lock: register lock + * + */ +struct clk_rcg2 { + u32 cmd_rcgr; + u8 mnd_width; + u8 hid_width; + const u8 *parent_map; + const struct freq_tbl *freq_tbl; + struct clk_regmap clkr; +}; + +#define to_clk_rcg2(_hw) container_of(to_clk_regmap(_hw), struct clk_rcg2, clkr) + +extern const struct clk_ops clk_rcg2_ops; + +#endif |