WSL2-Linux-Kernel/drivers/clk/mmp/clk.h

262 строки
6.1 KiB
C
Исходник Обычный вид История

License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 17:07:57 +03:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MACH_MMP_CLK_H
#define __MACH_MMP_CLK_H
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#define APBC_NO_BUS_CTRL BIT(0)
#define APBC_POWER_CTRL BIT(1)
/* Clock type "factor" */
struct mmp_clk_factor_masks {
unsigned int factor;
unsigned int num_mask;
unsigned int den_mask;
unsigned int num_shift;
unsigned int den_shift;
};
struct mmp_clk_factor_tbl {
unsigned int num;
unsigned int den;
};
struct mmp_clk_factor {
struct clk_hw hw;
void __iomem *base;
struct mmp_clk_factor_masks *masks;
struct mmp_clk_factor_tbl *ftbl;
unsigned int ftbl_cnt;
spinlock_t *lock;
};
extern struct clk *mmp_clk_register_factor(const char *name,
const char *parent_name, unsigned long flags,
void __iomem *base, struct mmp_clk_factor_masks *masks,
struct mmp_clk_factor_tbl *ftbl, unsigned int ftbl_cnt,
spinlock_t *lock);
/* Clock type "mix" */
#define MMP_CLK_BITS_MASK(width, shift) \
(((1 << (width)) - 1) << (shift))
#define MMP_CLK_BITS_GET_VAL(data, width, shift) \
((data & MMP_CLK_BITS_MASK(width, shift)) >> (shift))
#define MMP_CLK_BITS_SET_VAL(val, width, shift) \
(((val) << (shift)) & MMP_CLK_BITS_MASK(width, shift))
enum {
MMP_CLK_MIX_TYPE_V1,
MMP_CLK_MIX_TYPE_V2,
MMP_CLK_MIX_TYPE_V3,
};
/* The register layout */
struct mmp_clk_mix_reg_info {
void __iomem *reg_clk_ctrl;
void __iomem *reg_clk_sel;
u8 width_div;
u8 shift_div;
u8 width_mux;
u8 shift_mux;
u8 bit_fc;
};
/* The suggested clock table from user. */
struct mmp_clk_mix_clk_table {
unsigned long rate;
u8 parent_index;
unsigned int divisor;
unsigned int valid;
};
struct mmp_clk_mix_config {
struct mmp_clk_mix_reg_info reg_info;
struct mmp_clk_mix_clk_table *table;
unsigned int table_size;
u32 *mux_table;
struct clk_div_table *div_table;
u8 div_flags;
u8 mux_flags;
};
struct mmp_clk_mix {
struct clk_hw hw;
struct mmp_clk_mix_reg_info reg_info;
struct mmp_clk_mix_clk_table *table;
u32 *mux_table;
struct clk_div_table *div_table;
unsigned int table_size;
u8 div_flags;
u8 mux_flags;
unsigned int type;
spinlock_t *lock;
};
extern const struct clk_ops mmp_clk_mix_ops;
extern struct clk *mmp_clk_register_mix(struct device *dev,
const char *name,
const char * const *parent_names,
u8 num_parents,
unsigned long flags,
struct mmp_clk_mix_config *config,
spinlock_t *lock);
/* Clock type "gate". MMP private gate */
#define MMP_CLK_GATE_NEED_DELAY BIT(0)
struct mmp_clk_gate {
struct clk_hw hw;
void __iomem *reg;
u32 mask;
u32 val_enable;
u32 val_disable;
unsigned int flags;
spinlock_t *lock;
};
extern const struct clk_ops mmp_clk_gate_ops;
extern struct clk *mmp_clk_register_gate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u32 mask, u32 val_enable,
u32 val_disable, unsigned int gate_flags,
spinlock_t *lock);
extern struct clk *mmp_clk_register_apbc(const char *name,
const char *parent_name, void __iomem *base,
unsigned int delay, unsigned int apbc_flags, spinlock_t *lock);
extern struct clk *mmp_clk_register_apmu(const char *name,
const char *parent_name, void __iomem *base, u32 enable_mask,
spinlock_t *lock);
struct mmp_clk_unit {
unsigned int nr_clks;
struct clk **clk_table;
struct clk_onecell_data clk_data;
};
struct mmp_param_fixed_rate_clk {
unsigned int id;
char *name;
const char *parent_name;
unsigned long flags;
unsigned long fixed_rate;
};
void mmp_register_fixed_rate_clks(struct mmp_clk_unit *unit,
struct mmp_param_fixed_rate_clk *clks,
int size);
struct mmp_param_fixed_factor_clk {
unsigned int id;
char *name;
const char *parent_name;
unsigned long mult;
unsigned long div;
unsigned long flags;
};
void mmp_register_fixed_factor_clks(struct mmp_clk_unit *unit,
struct mmp_param_fixed_factor_clk *clks,
int size);
struct mmp_param_general_gate_clk {
unsigned int id;
const char *name;
const char *parent_name;
unsigned long flags;
unsigned long offset;
u8 bit_idx;
u8 gate_flags;
spinlock_t *lock;
};
void mmp_register_general_gate_clks(struct mmp_clk_unit *unit,
struct mmp_param_general_gate_clk *clks,
void __iomem *base, int size);
struct mmp_param_gate_clk {
unsigned int id;
char *name;
const char *parent_name;
unsigned long flags;
unsigned long offset;
u32 mask;
u32 val_enable;
u32 val_disable;
unsigned int gate_flags;
spinlock_t *lock;
};
void mmp_register_gate_clks(struct mmp_clk_unit *unit,
struct mmp_param_gate_clk *clks,
void __iomem *base, int size);
struct mmp_param_mux_clk {
unsigned int id;
char *name;
const char * const *parent_name;
u8 num_parents;
unsigned long flags;
unsigned long offset;
u8 shift;
u8 width;
u8 mux_flags;
spinlock_t *lock;
};
void mmp_register_mux_clks(struct mmp_clk_unit *unit,
struct mmp_param_mux_clk *clks,
void __iomem *base, int size);
struct mmp_param_div_clk {
unsigned int id;
char *name;
const char *parent_name;
unsigned long flags;
unsigned long offset;
u8 shift;
u8 width;
u8 div_flags;
spinlock_t *lock;
};
void mmp_register_div_clks(struct mmp_clk_unit *unit,
struct mmp_param_div_clk *clks,
void __iomem *base, int size);
struct mmp_param_pll_clk {
unsigned int id;
char *name;
unsigned long default_rate;
unsigned long enable_offset;
u32 enable;
unsigned long offset;
u8 shift;
/* MMP3 specific: */
unsigned long input_rate;
unsigned long postdiv_offset;
unsigned long postdiv_shift;
};
void mmp_register_pll_clks(struct mmp_clk_unit *unit,
struct mmp_param_pll_clk *clks,
void __iomem *base, int size);
extern struct clk *mmp_clk_register_pll(char *name,
unsigned long default_rate,
void __iomem *enable_reg, u32 enable,
void __iomem *reg, u8 shift,
unsigned long input_rate,
void __iomem *postdiv_reg, u8 postdiv_shift);
#define DEFINE_MIX_REG_INFO(w_d, s_d, w_m, s_m, fc) \
{ \
.width_div = (w_d), \
.shift_div = (s_d), \
.width_mux = (w_m), \
.shift_mux = (s_m), \
.bit_fc = (fc), \
}
void mmp_clk_init(struct device_node *np, struct mmp_clk_unit *unit,
int nr_clks);
void mmp_clk_add(struct mmp_clk_unit *unit, unsigned int id,
struct clk *clk);
#endif