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kernel_samsung_sm7125/include/linux/clkdev.h

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ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
/*
* include/linux/clkdev.h
*
* Copyright (C) 2008 Russell King.
*
* 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.
*
* Helper for the clk API to assist looking up a struct clk.
*/
#ifndef __CLKDEV_H
#define __CLKDEV_H
#include <asm/clkdev.h>
struct clk;
clkdev: Add clk_hw based registration APIs Now that we have a clk registration API that doesn't return struct clks, we need to have some way to hand out struct clks via the clk_get() APIs that doesn't involve associating struct clk pointers with a struct clk_lookup. Luckily, clkdev already operates on struct clk_hw pointers, except for the registration facing APIs where it converts struct clk pointers into struct clk_hw pointers almost immediately. Let's add clk_hw based registration APIs so that we can skip the conversion step and provide a way for clk provider drivers to operate exclusively on clk_hw structs. This way we clearly split the API between consumers and providers. Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years ago
struct clk_hw;
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
struct device;
struct clk_lookup {
struct list_head node;
const char *dev_id;
const char *con_id;
clk: msm: Add snapshot of clock framework files This is snapshot of the clock framework files as of msm-4.9 'commit cc7a1542d987 ("msm: ipa: Fix assignment warning with clang"). Below is the brief description of the additional changes made: 1. Add COMMON_CLK_MSM config flag for conditional compilation for some common files used between COMMON_CLK_MSM and COMMON_CLK_QCOM clock framework files. 2. Add reset controller framework files for BCR operation. 3. Add conditional compilation support for FTRACE clock functions to maintain compatibility for clock framework based on COMMON_CLK_MSM and COMMON_CLK_QCOM. 4. Add files for GDSC operation. 5. Add BCR reset maps. 6. Resolve compilation issue for qti-quin-gvm. Some PLL HWs require an additional delay for the PLL lock detect to stabilize after being brought out of reset and SW to poll for lock detect status. Add delay of 50uSec before polling lock_det bit by introducing new pll ops. Also if PLL fails to lock, record additional PLL debug information in the kernel log before panic(). 'commit 90cb5ecd7cfd ("clk: msm: Add delay of 50uSec before polling lock_detect status")'. 1:1 is the MN divider preference for DSI PCLK for the regular 24 bpp use-case for display as per hardware recommendation. Update the divider array to give first priority to 1:1 divider combination. 'commit a270c07a1e21 ("clk: msm: update the fractional divider array for DSI PCLK")'. For some PLLs, there could be need to configure the calibration L value for auto calibration which PLL would use whenever it will come out of reset. Add support for the same by writing into USER_CTL_HI register. 'commit 05bd8759e347 ("clk: msm: Add support to configure calibration L value")'. Change-Id: I4260a9807e5e1b116db8f43fb9cfbbb55a5a8d67 Signed-off-by: Taniya Das <tdas@codeaurora.org> Signed-off-by: Suresh Kumar Allam <allamsuresh@codeaurora.org>
5 years ago
int of_idx;
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
struct clk *clk;
clkdev: use clk_hw internally clk_add_alias() calls clk_get() followed by clk_put() but in between those two calls it saves away the struct clk pointer to a clk_lookup structure. This leaves the 'clk' member of the clk_lookup pointing at freed memory on configurations where CONFIG_COMMON_CLK=y. This is a problem because clk_get_sys() will eventually try to dereference the freed pointer by calling __clk_get_hw() on it. Fix this by saving away the struct clk_hw pointer instead of the struct clk pointer so that when we try to create a per-user struct clk in clk_get_sys() we don't dereference a junk pointer. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years ago
struct clk_hw *clk_hw;
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
};
ARM: 7131/1: clkdev: Add Common Macro for clk_lookup Added a standardized macro CLKDEV_INIT which can used across all the platforms to support clkdev Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years ago
#define CLKDEV_INIT(d, n, c) \
{ \
.dev_id = d, \
.con_id = n, \
.clk = c, \
}
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
include, lib: add __printf attributes to several function prototypes Using __printf attributes helps to detect several format string issues at compile time (even though -Wformat-security is currently disabled in Makefile). For example it can detect when formatting a pointer as a number, like the issue fixed in commit a3fa71c40f18 ("wl18xx: show rx_frames_per_rates as an array as it really is"), or when the arguments do not match the format string, c.f. for example commit 5ce1aca81435 ("reiserfs: fix __RASSERT format string"). To prevent similar bugs in the future, add a __printf attribute to every function prototype which needs one in include/linux/ and lib/. These functions were mostly found by using gcc's -Wsuggest-attribute=format flag. Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Felipe Balbi <balbi@ti.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years ago
const char *dev_fmt, ...) __printf(3, 4);
clkdev: Add clk_hw based registration APIs Now that we have a clk registration API that doesn't return struct clks, we need to have some way to hand out struct clks via the clk_get() APIs that doesn't involve associating struct clk pointers with a struct clk_lookup. Luckily, clkdev already operates on struct clk_hw pointers, except for the registration facing APIs where it converts struct clk pointers into struct clk_hw pointers almost immediately. Let's add clk_hw based registration APIs so that we can skip the conversion step and provide a way for clk provider drivers to operate exclusively on clk_hw structs. This way we clearly split the API between consumers and providers. Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years ago
struct clk_lookup *clkdev_hw_alloc(struct clk_hw *hw, const char *con_id,
const char *dev_fmt, ...) __printf(3, 4);
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
void clkdev_add(struct clk_lookup *cl);
void clkdev_drop(struct clk_lookup *cl);
clkdev: add clkdev_create() helper Add a helper to allocate and add a clk_lookup structure. This can not only be used in several places in clkdev.c to simplify the code, but more importantly, can be used by callers of the clkdev code to simplify their clkdev creation and registration. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years ago
struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
include, lib: add __printf attributes to several function prototypes Using __printf attributes helps to detect several format string issues at compile time (even though -Wformat-security is currently disabled in Makefile). For example it can detect when formatting a pointer as a number, like the issue fixed in commit a3fa71c40f18 ("wl18xx: show rx_frames_per_rates as an array as it really is"), or when the arguments do not match the format string, c.f. for example commit 5ce1aca81435 ("reiserfs: fix __RASSERT format string"). To prevent similar bugs in the future, add a __printf attribute to every function prototype which needs one in include/linux/ and lib/. These functions were mostly found by using gcc's -Wsuggest-attribute=format flag. Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Felipe Balbi <balbi@ti.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years ago
const char *dev_fmt, ...) __printf(3, 4);
clkdev: Add clk_hw based registration APIs Now that we have a clk registration API that doesn't return struct clks, we need to have some way to hand out struct clks via the clk_get() APIs that doesn't involve associating struct clk pointers with a struct clk_lookup. Luckily, clkdev already operates on struct clk_hw pointers, except for the registration facing APIs where it converts struct clk pointers into struct clk_hw pointers almost immediately. Let's add clk_hw based registration APIs so that we can skip the conversion step and provide a way for clk provider drivers to operate exclusively on clk_hw structs. This way we clearly split the API between consumers and providers. Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years ago
struct clk_lookup *clkdev_hw_create(struct clk_hw *hw, const char *con_id,
const char *dev_fmt, ...) __printf(3, 4);
clkdev: add clkdev_create() helper Add a helper to allocate and add a clk_lookup structure. This can not only be used in several places in clkdev.c to simplify the code, but more importantly, can be used by callers of the clkdev code to simplify their clkdev creation and registration. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years ago
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
void clkdev_add_table(struct clk_lookup *, size_t);
clkdev: const-ify connection id to clk_add_alias() The connection id is only passed to clk_get() which is already const. Const-ify this argument too. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years ago
int clk_add_alias(const char *, const char *, const char *, struct device *);
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
ARM: 8503/1: clk_register_clkdev: remove format string interface Many callers either use NULL or const strings for the third argument of clk_register_clkdev. For those that do not and use a non-const string, this is a risk for format strings being accidentally processed (for example in device names). As this interface is already used as if it weren't a format string (prints nothing when NULL), and there are zero users of the format strings, remove the format string interface to make sure format strings will not leak into the clkdev. $ git grep '\bclk_register_clkdev\b' | grep % | wc -l 0 Unfortunately, all the internals expect a va_list even though they treat a NULL format string as special. To deal with this, we must pass either (..., "%s", string) or (..., NULL) so that a the va_list will be created correctly (passing the name as an argument, not as a format string). Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
9 years ago
int clk_register_clkdev(struct clk *, const char *, const char *);
clkdev: Add clk_hw based registration APIs Now that we have a clk registration API that doesn't return struct clks, we need to have some way to hand out struct clks via the clk_get() APIs that doesn't involve associating struct clk pointers with a struct clk_lookup. Luckily, clkdev already operates on struct clk_hw pointers, except for the registration facing APIs where it converts struct clk pointers into struct clk_hw pointers almost immediately. Let's add clk_hw based registration APIs so that we can skip the conversion step and provide a way for clk provider drivers to operate exclusively on clk_hw structs. This way we clearly split the API between consumers and providers. Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years ago
int clk_hw_register_clkdev(struct clk_hw *, const char *, const char *);
CLKDEV: provide helpers for common clock framework The common clock framework allocates clocks dynamically. Provide a set of helpers to streamline the clkdev registration of the clock lookups to avoid repetitive code sequences. Reviewed-by: Viresh Kumar <viresh.kumar@st.com> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years ago
clk: Add common __clk_get(), __clk_put() implementations This patch adds common __clk_get(), __clk_put() clkdev helpers that replace their platform specific counterparts when the common clock API is used. The owner module pointer field is added to struct clk so a reference to the clock supplier module can be taken by the clock consumers. The owner module is assigned while the clock is being registered, in functions _clk_register() and __clk_register(). Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years ago
#ifdef CONFIG_COMMON_CLK
int __clk_get(struct clk *clk);
void __clk_put(struct clk *clk);
#endif
ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago
#endif