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alistair23-linux/arch/arm/mach-omap2/clock.h

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ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
/*
* linux/arch/arm/mach-omap2/clock.h
*
OMAP2 clock: convert clock24xx.h to clock2xxx_data.c, opp2xxx* The OMAP2 clock code currently #includes a large .h file full of static data structures. Instead, define the data in a .c file. Russell King <linux@arm.linux.org.uk> proposed this new arrangement: http://marc.info/?l=linux-omap&m=125967425908895&w=2 This patch also deals with most of the flagrant checkpatch violations. While here, separate the prcm_config data structures out into their own files, opp2xxx.h and opp24{2,3}0_data.c, and only build in the OPP tables for the target device. This should save some memory. In the long run, these prcm_config tables should be replaced with OPP code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Richard Woodruff <r-woodruff2@ti.com> Cc: Nishanth Menon <nm@ti.com>
2009-12-08 16:21:29 -07:00
* Copyright (C) 2005-2009 Texas Instruments, Inc.
OMAP2+: clock: add interface clock type code with autoidle support Add interface clock type code with autoidle enable/disable support. The clkops structures created in this file will be used for all OMAP2/3 interface clocks with autoidle support. They will enable the clock framework to control interface clock autoidle directly. Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-02-25 15:39:28 -07:00
* Copyright (C) 2004-2011 Nokia Corporation
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
*
ARM: OMAP2: Clean up 24xx clock code Clean up 24xx clock code to sync it with linux-omap tree. Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 03:56:39 -06:00
* Contacts:
* Richard Woodruff <r-woodruff2@ti.com>
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
* Paul Walmsley
*
* 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.
*/
#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
#define __ARCH_ARM_MACH_OMAP2_CLOCK_H
OMAP2+: clock: allow per-SoC clock init code to prevent clockdomain calls from clock code The OMAP2/3 clock code was written to notify the clockdomain code when the first clock in a clockdomain is enabled and when the last enabled clock in a clockdomain is disabled. OMAP4 requires a different approach: the hwmod code needs to signal the clockdomain code when to force-enable and auto-idle a clockdomain during the IP block enable process. The current conjecture is that once that hwmod sequence is implemented, it will no longer be necessary for the clock code to call into the clockdomain code for "optional clocks" on OMAP4. Add a static flag to the OMAP2+ clock code, clkdm_control, that by default preserves the OMAP2/3 behavior. Also add a function, omap2_clk_disable_clkdm_control(), intended to be called from OMAP4 and beyond clock initcalls, that disables the old behavior. Part of this patch was originally based on a patch by Rajendra Nayak <rnayak@ti.com>. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com> Cc: Rajendra Nayak <rnayak@ti.com>
2011-07-10 05:57:06 -06:00
#include <linux/kernel.h>
omap: headers: Move remaining headers from include/mach to include/plat Move the remaining headers under plat-omap/include/mach to plat-omap/include/plat. Also search and replace the files using these headers to include using the right path. This was done with: #!/bin/bash mach_dir_old="arch/arm/plat-omap/include/mach" plat_dir_new="arch/arm/plat-omap/include/plat" headers=$(cd $mach_dir_old && ls *.h) omap_dirs="arch/arm/*omap*/ \ drivers/video/omap \ sound/soc/omap" other_files="drivers/leds/leds-ams-delta.c \ drivers/mfd/menelaus.c \ drivers/mfd/twl4030-core.c \ drivers/mtd/nand/ams-delta.c" for header in $headers; do old="#include <mach\/$header" new="#include <plat\/$header" for dir in $omap_dirs; do find $dir -type f -name \*.[chS] | \ xargs sed -i "s/$old/$new/" done find drivers/ -type f -name \*omap*.[chS] | \ xargs sed -i "s/$old/$new/" for file in $other_files; do sed -i "s/$old/$new/" $file done done for header in $(ls $mach_dir_old/*.h); do git mv $header $plat_dir_new/ done Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-20 10:40:47 -06:00
#include <plat/clock.h>
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
[ARM] omap: add support for bypassing DPLLs This roughly corresponds with OMAP commits: 7d06c48, 3241b19, 88b5d9b, 18a5500, 9c909ac, 5c6497b, 8b1f0bd, 2ac1da8. For both OMAP2 and OMAP3, we note the reference and bypass clocks in the DPLL data structure. Whenever we modify the DPLL rate, we first ensure that both the reference and bypass clocks are enabled. Then, we decide whether to use the reference and DPLL, or the bypass clock if the desired rate is identical to the bypass rate, and program the DPLL appropriately. Finally, we update the clock's parent, and then disable the unused clocks. This keeps the parents correctly balanced, and more importantly ensures that the bypass clock is running whenever we reprogram the DPLL. This is especially important because the procedure for reprogramming the DPLL involves switching to the bypass clock. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-19 06:29:22 -07:00
/* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
#define CORE_CLK_SRC_32K 0x0
#define CORE_CLK_SRC_DPLL 0x1
#define CORE_CLK_SRC_DPLL_X2 0x2
/* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
#define OMAP2XXX_EN_DPLL_LPBYPASS 0x1
#define OMAP2XXX_EN_DPLL_FRBYPASS 0x2
#define OMAP2XXX_EN_DPLL_LOCKED 0x3
/* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
#define OMAP3XXX_EN_DPLL_LPBYPASS 0x5
#define OMAP3XXX_EN_DPLL_FRBYPASS 0x6
#define OMAP3XXX_EN_DPLL_LOCKED 0x7
ARM: OMAP4: PM: Add support for OMAP4 dpll api's Most of the dpll api's from dpll.c are reused for OMAP4. This patch does extend a few api's for OMAP4 support. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com>
2009-12-08 18:47:16 -07:00
/* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
#define OMAP4XXX_EN_DPLL_MNBYPASS 0x4
#define OMAP4XXX_EN_DPLL_LPBYPASS 0x5
#define OMAP4XXX_EN_DPLL_FRBYPASS 0x6
#define OMAP4XXX_EN_DPLL_LOCKED 0x7
ARM: OMAP4: PM: Move DPLL control apis to dpll.c This patch moves all the dpll control api's to a common file dpll.c. This is in preperation of omap4 support wherein most of these api's can be reused. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com>
2009-12-08 18:47:16 -07:00
/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
#define DPLL_LOW_POWER_STOP 0x1
#define DPLL_LOW_POWER_BYPASS 0x5
#define DPLL_LOCKED 0x7
OMAP3 clock: introduce DPLL4 Jtype DPLL4 for 3630 introduces a changed block called j type dpll, requiring special divisor bits and additional reg fields. To allow for silicons to use this, this is introduced as a flag and is enabled for 3630 silicon. OMAP4 also has j type dpll for usb. Tested with 3630 ZOOM3 and OMAP3430 ZOOM2 Signed-off-by: Richard Woodruff <r-woodruff2@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Vishwanath BS <Vishwanath.bs@ti.com> [paul@pwsan.com: added some comments; updated copyrights and credits; fixed some style issues] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-02-22 22:09:08 -07:00
/* DPLL Type and DCO Selection Flags */
#define DPLL_J_TYPE 0x1
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
int omap2_clk_enable(struct clk *clk);
void omap2_clk_disable(struct clk *clk);
long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
ARM: OMAP2: Clock: New OMAP2/3 DPLL rate rounding algorithm This patch adds a new rate rounding algorithm for DPLL clocks on the OMAP2/3 architecture. For a desired DPLL target rate, there may be several multiplier/divider (M, N) values which will generate a sufficiently close rate. Lower N values result in greater power economy. However, lower N values can cause the difference between the rounded rate and the target rate ("rate error") to be larger than it would be with a higher N. This can cause downstream devices to run more slowly than they otherwise would. This DPLL rate rounding algorithm: - attempts to find the lowest possible N (DPLL divider) to reach the target_rate (since, according to Richard Woodruff <r-woodruff@ti.com>, lower N values save more power than higher N values). - allows developers to set an upper bound on the error between the rounded rate and the desired target rate ("rate tolerance"), so an appropriate balance between rate fidelity and power savings can be set. This maximum rate error tolerance is set via omap2_set_dpll_rate_tolerance(). - never returns a rounded rate higher than the target rate. The rate rounding algorithm caches the last rounded M, N, and rate computation to avoid rounding the rate twice for each clk_set_rate() call. (This patch does not yet implement set_rate for DPLLs; that follows in a future patch.) The algorithm trades execution speed for rate accuracy. It will find the (M, N) set that results in the least rate error, within a specified rate tolerance. It does this by evaluating each divider setting - on OMAP3, this involves 128 steps. Another approach to DPLL rate rounding would be to bail out as soon as a valid rate is found within the rate tolerance, which would trade rate accuracy for execution speed. Alternate implementations welcome. This code is not yet used by the OMAP24XX DPLL clock, since it is currently defined as a composite clock, fusing the DPLL M,N and the M2 output divider. This patch also renames the existing OMAP24xx DPLL programming functions to highlight that they program both the DPLL and the DPLL's output multiplier. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-07-03 03:24:46 -06:00
long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
ARM: OMAP4: PM: Move DPLL control apis to dpll.c This patch moves all the dpll control api's to a common file dpll.c. This is in preperation of omap4 support wherein most of these api's can be reused. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com>
2009-12-08 18:47:16 -07:00
unsigned long omap3_dpll_recalc(struct clk *clk);
unsigned long omap3_clkoutx2_recalc(struct clk *clk);
void omap3_dpll_allow_idle(struct clk *clk);
void omap3_dpll_deny_idle(struct clk *clk);
u32 omap3_dpll_autoidle_read(struct clk *clk);
int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate);
int omap3_noncore_dpll_enable(struct clk *clk);
void omap3_noncore_dpll_disable(struct clk *clk);
OMAP4: DPLL: Add dpll api to control GATE_CTRL On OMAP4, the dpll post divider outputs (MX outputs) along with clockout_x2 output provide a way to allow/deny hardware level autogating. Allowing autoidle would mean that the hw would autogate this clock when there is no dependency for it. Denying idle would mean that this clock output will be forced to stay enabled. Add dpll api's to read/allow/deny idle control for these dpll mx postdividers. NOTE: The gatectrl bit set to 0 allows gatectrl, and the bit set to 1 denies gatectrl. Signed-off-by: Rajendra Nayak <rnayak@ti.com> [paul@pwsan.com: moved OMAP4-specific DPLL control code to mach-omap2/dpll44xx.c; added some documentation for CLOCK_CLKOUTX2] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-02-25 15:49:01 -07:00
int omap4_dpllmx_gatectrl_read(struct clk *clk);
void omap4_dpllmx_allow_gatectrl(struct clk *clk);
void omap4_dpllmx_deny_gatectrl(struct clk *clk);
ARM: OMAP4: clock: round_rate and recalc functions for DPLL_ABE OMAP4 DPLL_ABE can enable a 4X multipler on top of the normal MN multipler and divider. This is achieved by setting CM_CLKMODE_DPLL_ABE.DPLL_REGM4XEN bit in CKGEN module of CM1. From the OMAP4 TRM: Fdpll = Fref x 2 x (4 x M/(N+1)) in case REGM4XEN bit field is set (only applicable to DPLL_ABE). Add new round_rate() and recalc() functions for OMAP4, that check the setting of REGM4XEN bit and handle this appropriately. The new functions are a simple wrapper on top of the existing omap2_dpll_round_rate() and omap2_dpll_get_rate() functions to handle the REGM4XEN bit. The REGM4XEN bit is only implemented for the ABE DPLL on OMAP4 and so only dpll_abe_ck uses omap4_dpll_regm4xen_round_rate() and omap4_dpll_regm4xen_recalc() functions. Signed-off-by: Mike Turquette <mturquette@ti.com> Tested-by: Jon Hunter <jon-hunter@ti.com> Signed-off-by: Jon Hunter <jon-hunter@ti.com> [paul@pwsan.com: fixed attempt to return a negative from a fn returning unsigned; pass along errors from omap2_dpll_round_rate(); added documentation; added Jon's S-o-b] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-10-07 00:52:58 -06:00
long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate);
unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk);
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
#ifdef CONFIG_OMAP_RESET_CLOCKS
void omap2_clk_disable_unused(struct clk *clk);
#else
#define omap2_clk_disable_unused NULL
#endif
ARM: OMAP2: Clockdomain: Integrate OMAP3 clocks with clockdomain code This patch integrates the OMAP3 clock tree with the clockdomain code. This patch: - marks OMAP34xx clocks with their corresponding clockdomain. - adds code to convert the clockdomain name to a clockdomain pointer in the struct clk during clk_register(). - modifies OMAP2 clock usecounting to call into the clockdomain code when clocks are enabled or disabled. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-08-19 02:08:45 -06:00
void omap2_init_clk_clkdm(struct clk *clk);
OMAP2+: clock: allow per-SoC clock init code to prevent clockdomain calls from clock code The OMAP2/3 clock code was written to notify the clockdomain code when the first clock in a clockdomain is enabled and when the last enabled clock in a clockdomain is disabled. OMAP4 requires a different approach: the hwmod code needs to signal the clockdomain code when to force-enable and auto-idle a clockdomain during the IP block enable process. The current conjecture is that once that hwmod sequence is implemented, it will no longer be necessary for the clock code to call into the clockdomain code for "optional clocks" on OMAP4. Add a static flag to the OMAP2+ clock code, clkdm_control, that by default preserves the OMAP2/3 behavior. Also add a function, omap2_clk_disable_clkdm_control(), intended to be called from OMAP4 and beyond clock initcalls, that disables the old behavior. Part of this patch was originally based on a patch by Rajendra Nayak <rnayak@ti.com>. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com> Cc: Rajendra Nayak <rnayak@ti.com>
2011-07-10 05:57:06 -06:00
void __init omap2_clk_disable_clkdm_control(void);
OMAP2+ clock: clean up clkt_clksel.c This patch cleans up arch/arm/mach-omap2/clkt_clksel.c. It: - makes several functions static that are not called outside the file; - adds documentation; - makes some code paths easier to read (hopefully), by breaking up compound statements and removing redundant checks; - converts some pr_err()s that indicate clock tree data problems into WARN()s, so they are more likely to be noticed; - and moves omap2_clk_round_rate() back into mach-omap2/clock.c, its proper home, since it is not clksel-specific. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-05-18 18:40:24 -06:00
/* clkt_clksel.c public functions */
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
u32 *new_div);
OMAP2+ clock: clean up clkt_clksel.c This patch cleans up arch/arm/mach-omap2/clkt_clksel.c. It: - makes several functions static that are not called outside the file; - adds documentation; - makes some code paths easier to read (hopefully), by breaking up compound statements and removing redundant checks; - converts some pr_err()s that indicate clock tree data problems into WARN()s, so they are more likely to be noticed; - and moves omap2_clk_round_rate() back into mach-omap2/clock.c, its proper home, since it is not clksel-specific. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-05-18 18:40:24 -06:00
void omap2_init_clksel_parent(struct clk *clk);
unsigned long omap2_clksel_recalc(struct clk *clk);
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
OMAP2/3/4 clock: move clksel clock functions into mach-omap2/clkt_clksel.c Move all clksel-related clock functions from mach-omap2/clock.c to mach-omap2/clkt_clksel.c. This is intended to make the clock code easier to understand, since all of the functions needed to manage clksel clocks are now located in their own file, rather than being mixed with other, unrelated functions. Clock debugging is also now more finely-grained, since the DEBUG macro can now be defined for clksel clocks alon. This should reduce unnecessary console noise when debugging. Also, if at some future point the mach-omap2/ directory is split into OMAP2/3/4 variants, this clkt file can be moved to the plat-omap/ directory to be shared. Thanks to Alexander Shishkin <virtuoso@slind.org> for his comments to improve the patch description. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Alexander Shishkin <virtuoso@slind.org>
2010-01-26 20:13:04 -07:00
int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent);
OMAP2+ clock: clean up clkt_clksel.c This patch cleans up arch/arm/mach-omap2/clkt_clksel.c. It: - makes several functions static that are not called outside the file; - adds documentation; - makes some code paths easier to read (hopefully), by breaking up compound statements and removing redundant checks; - converts some pr_err()s that indicate clock tree data problems into WARN()s, so they are more likely to be noticed; - and moves omap2_clk_round_rate() back into mach-omap2/clock.c, its proper home, since it is not clksel-specific. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-05-18 18:40:24 -06:00
OMAP2+: clock: add interface clock type code with autoidle support Add interface clock type code with autoidle enable/disable support. The clkops structures created in this file will be used for all OMAP2/3 interface clocks with autoidle support. They will enable the clock framework to control interface clock autoidle directly. Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-02-25 15:39:28 -07:00
/* clkt_iclk.c public functions */
extern void omap2_clkt_iclk_allow_idle(struct clk *clk);
extern void omap2_clkt_iclk_deny_idle(struct clk *clk);
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
u32 omap2_get_dpll_rate(struct clk *clk);
ARM: OMAP4: PM: Add init api for DPLL nodes An api at init for all dpll nodes seem to be needed to reparent the dpll clk node to its bypass clk in case the dpll is in bypass. If not done this causes sequencing issues at init during propogate_rate. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com>
2009-12-08 18:47:17 -07:00
void omap2_init_dpll_parent(struct clk *clk);
OMAP2+ clock: clean up clkt_clksel.c This patch cleans up arch/arm/mach-omap2/clkt_clksel.c. It: - makes several functions static that are not called outside the file; - adds documentation; - makes some code paths easier to read (hopefully), by breaking up compound statements and removing redundant checks; - converts some pr_err()s that indicate clock tree data problems into WARN()s, so they are more likely to be noticed; - and moves omap2_clk_round_rate() back into mach-omap2/clock.c, its proper home, since it is not clksel-specific. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-05-18 18:40:24 -06:00
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);
omap2/3: Multiboot compile fixes to compile in omap2 and omap3 Allows compiling in omap2 and omap3. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-12 13:26:46 -07:00
#ifdef CONFIG_ARCH_OMAP2
void omap2xxx_clk_prepare_for_reboot(void);
#else
static inline void omap2xxx_clk_prepare_for_reboot(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP3
void omap3_clk_prepare_for_reboot(void);
#else
static inline void omap3_clk_prepare_for_reboot(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP4
void omap4_clk_prepare_for_reboot(void);
#else
static inline void omap4_clk_prepare_for_reboot(void)
{
}
#endif
OMAP2/3 clock: split, rename omap2_wait_clock_ready() Some OMAP2/3 hardware modules have CM_IDLEST attributes that are not handled by the current omap2_wait_clock_ready() code. In preparation for patches that fix the unusual devices, rename the function omap2_wait_clock_ready() to omap2_wait_module_ready() and split it into three parts: 1. A clkops-specific companion clock return function (by default, omap2_clk_dflt_find_companion()) 2. A clkops-specific CM_IDLEST register address and bit shift return function (by default, omap2_clk_dflt_find_idlest()) 3. Code to wait for the CM to indicate that the module is ready (omap2_cm_wait_idlest()) Clocks can now specify their own custom find_companion() and find_idlest() functions; used in subsequent patches. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2009-07-24 19:44:03 -06:00
int omap2_dflt_clk_enable(struct clk *clk);
void omap2_dflt_clk_disable(struct clk *clk);
void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
u8 *other_bit);
void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
OMAP2/3 clock: Extend find_idlest() to pass back idle state value Current implementation defines clock idle state indicators based on the cpu information (cpu_is_omap24xx() or cpu_is_omap34xx()) in a system wide manner. This patch extends the find_idlest() function in clkops to pass back the idle state indicator for that clock, thus allowing idle state indicators to be defined on a per clock basis if required. This is specifically needed on AM35xx devices as the new IPSS clocks indicates the idle status (0 is idle, 1 is ready) in a way just opposite to how its handled in OMAP3 (0 is ready, 1 is idle). Signed-off-by: Ranjith Lohithakshan <ranjithl@ti.com> [paul@pwsan.com: updated to apply after commit 98c45457 et seq.] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-02-24 12:05:54 -07:00
u8 *idlest_bit, u8 *idlest_val);
OMAP2/3 clock: combine OMAP2 & 3 boot-time MPU rate change code The OMAP2 and OMAP3 boot-time MPU rate change code is almost identical. Merge them into mach-omap2/clock.c, and add kerneldoc documentation. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-02-22 22:09:36 -07:00
int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
const char *core_ck_name,
const char *mpu_ck_name);
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
ARM: OMAP: am33xx: Update common omap platform files This patch updates the common platform files with AM335X device support (AM33XX family). The approach taken in this patch is, AM33XX device will be considered as OMAP3 variant, and a separate SoC class created for AM33XX family of devices with a subclass type for AM335X device, which is newly added device in the family. This means, cpu_is_omap34xx(), cpu_is_am33xx() and cpu_is_am335x() checks will return success on AM335X device. A kernel config option CONFIG_SOC_OMAPAM33XX is added under OMAP3 to include support for AM33XX build. Also, cpu_mask and RATE_IN_XXX flags have crossed 8 bit hence struct clksel_rate.flags, struct prcm_config.flags and cpu_mask are changed to u16 from u8. Signed-off-by: Afzal Mohammed <afzal@ti.com> Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Cc: Hemant Pedanekar <hemantp@ti.com> [tony@atomide.com: left out CK_AM33XX for now] Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-12-13 11:46:43 -07:00
extern u16 cpu_mask;
OMAP2 clock: convert clock24xx.h to clock2xxx_data.c, opp2xxx* The OMAP2 clock code currently #includes a large .h file full of static data structures. Instead, define the data in a .c file. Russell King <linux@arm.linux.org.uk> proposed this new arrangement: http://marc.info/?l=linux-omap&m=125967425908895&w=2 This patch also deals with most of the flagrant checkpatch violations. While here, separate the prcm_config data structures out into their own files, opp2xxx.h and opp24{2,3}0_data.c, and only build in the OPP tables for the target device. This should save some memory. In the long run, these prcm_config tables should be replaced with OPP code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Richard Woodruff <r-woodruff2@ti.com> Cc: Nishanth Menon <nm@ti.com>
2009-12-08 16:21:29 -07:00
[ARM] omap: add default .ops to all remaining OMAP2 clocks Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-04 10:59:52 -07:00
extern const struct clkops clkops_omap2_dflt_wait;
OMAP4: clock: Add dummy clock nodes for interface clocks On OMAP4 platform the iclk control is completly under hardware control and no software control is available. This difference w.r.t previous OMAP's needs all the common driver accross OMAP's , cpu_is_xxxx() checks. To avoid poulluting the drivers dummy clock nodes are created (The autogeneration script has been updated accordingly). Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Benoit Cousson <b-cousson@ti.com> [paul@pwsan.com: made OMAP1 dummy_ck common and edited patch to reuse that] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-02-22 22:09:40 -07:00
extern const struct clkops clkops_dummy;
[ARM] omap: eliminate unnecessary conditionals in omap2_clk_wait_ready Rather than employing run-time tests in omap2_clk_wait_ready() to decide whether we need to wait for the clock to become ready, we can set the .ops appropriately. This change deals with the OMAP24xx and OMAP34xx conditionals only. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-04 11:59:32 -07:00
extern const struct clkops clkops_omap2_dflt;
[ARM] omap: add default .ops to all remaining OMAP2 clocks Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-04 10:59:52 -07:00
OMAP3 clock: convert clock34xx.h to clock34xx_data.c The OMAP3 clock code currently #includes a large .h file full of static data structures. Instead, define the data in a .c file. Russell King <linux@arm.linux.org.uk> proposed this new arrangement: http://marc.info/?l=linux-omap&m=125967425908895&w=2 Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk>
2009-12-08 16:18:47 -07:00
extern struct clk_functions omap2_clk_functions;
OMAP2 clock: convert clock24xx.h to clock2xxx_data.c, opp2xxx* The OMAP2 clock code currently #includes a large .h file full of static data structures. Instead, define the data in a .c file. Russell King <linux@arm.linux.org.uk> proposed this new arrangement: http://marc.info/?l=linux-omap&m=125967425908895&w=2 This patch also deals with most of the flagrant checkpatch violations. While here, separate the prcm_config data structures out into their own files, opp2xxx.h and opp24{2,3}0_data.c, and only build in the OPP tables for the target device. This should save some memory. In the long run, these prcm_config tables should be replaced with OPP code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Richard Woodruff <r-woodruff2@ti.com> Cc: Nishanth Menon <nm@ti.com>
2009-12-08 16:21:29 -07:00
extern struct clk *vclk, *sclk;
OMAP3 clock: convert clock34xx.h to clock34xx_data.c The OMAP3 clock code currently #includes a large .h file full of static data structures. Instead, define the data in a .c file. Russell King <linux@arm.linux.org.uk> proposed this new arrangement: http://marc.info/?l=linux-omap&m=125967425908895&w=2 Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk>
2009-12-08 16:18:47 -07:00
OMAP2 clock: convert clock24xx.h to clock2xxx_data.c, opp2xxx* The OMAP2 clock code currently #includes a large .h file full of static data structures. Instead, define the data in a .c file. Russell King <linux@arm.linux.org.uk> proposed this new arrangement: http://marc.info/?l=linux-omap&m=125967425908895&w=2 This patch also deals with most of the flagrant checkpatch violations. While here, separate the prcm_config data structures out into their own files, opp2xxx.h and opp24{2,3}0_data.c, and only build in the OPP tables for the target device. This should save some memory. In the long run, these prcm_config tables should be replaced with OPP code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Richard Woodruff <r-woodruff2@ti.com> Cc: Nishanth Menon <nm@ti.com>
2009-12-08 16:21:29 -07:00
extern const struct clksel_rate gpt_32k_rates[];
extern const struct clksel_rate gpt_sys_rates[];
extern const struct clksel_rate gfx_l3_rates[];
OMAP2xxx: clock: remove dsp_irate_ick After commit 81b34fbecbfbf24ed95c2d80d5cb14149652408f ("OMAP2 clock: split OMAP2420, OMAP2430 clock data into their own files"), it's possible to remove dsp_irate_ick from the OMAP2420 and OMAP2430 clock files. It was originally only needed due to a 2420/2430 clock tree difference, and now that the data is in separate files, it's superfluous. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-02-25 15:52:04 -07:00
extern const struct clksel_rate dsp_ick_rates[];
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
OMAP2+: clock: add interface clock type code with autoidle support Add interface clock type code with autoidle enable/disable support. The clkops structures created in this file will be used for all OMAP2/3 interface clocks with autoidle support. They will enable the clock framework to control interface clock autoidle directly. Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-02-25 15:39:28 -07:00
extern const struct clkops clkops_omap2_iclk_dflt_wait;
extern const struct clkops clkops_omap2_iclk_dflt;
extern const struct clkops clkops_omap2_iclk_idle_only;
OMAP2430/3xxx: clock: add modem clock autoidle support OMAP2430 and OMAP3xxx have modem autoidle bits that are actually attached to clocks with CM_FCLKEN bits; add the code and data to handle these. Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-02-25 15:39:29 -07:00
extern const struct clkops clkops_omap2_mdmclk_dflt_wait;
OMAP2: clock: add DPLL autoidle support Add the necessary code and data to allow the clock framework to enable and disable the OMAP2 DPLL autoidle state. This is so the direct register access can be moved out of the mach-omap2/pm24xx.c code, and other code that needs to control this (e.g., CPUIdle) can do so via an API. As part of this patch, remove the pm24xx.c code that formerly wrote directly to the autoidle bits. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@ti.com> Tested-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-02-25 15:49:53 -07:00
extern const struct clkops clkops_omap2xxx_dpll_ops;
OMAP3/4 clock: split into per-chip family files clock34xx_data.c now contains data for the OMAP34xx family, the OMAP36xx family, and the OMAP3517 family, so rename it to clock3xxx_data.c. Rename clock34xx.c to clock3xxx.c, and move the chip family-specific clock functions to clock34xx.c, clock36xx.c, or clock3517.c, as appropriate. So now "clock3xxx.*" refers to the OMAP3 superset. The main goal here is to prepare to compile chip family-specific clock functions only for kernel builds that target that chip family. To get to that point, we also need to add CONFIG_SOC_* options for those other chip families; that will be done in future patches, planned for 2.6.35. OMAP4 is also affected by this. It duplicated the OMAP3 non-CORE DPLL clkops structure. The OMAP4 variant of this clkops structure has been removed, and since there was nothing else currently in clock44xx.c, it too has been removed -- it can always be added back later when there is some content for it. (The OMAP4 clock autogeneration scripts have been updated accordingly.) Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Ranjith Lohithakshan <ranjithl@ti.com> Cc: Tony Lindgren <tony@atomide.com>
2010-02-22 22:09:20 -07:00
extern const struct clkops clkops_omap3_noncore_dpll_ops;
OMAP3/4: DPLL: Add allow_idle/deny_idle support for all DPLL's All OMAP3/4 dpll's support hardware level autogating. Populate allow_idle/deny_idle function pointers for all DPLL's in clkops. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-02-25 15:49:00 -07:00
extern const struct clkops clkops_omap3_core_dpll_ops;
omap4: dpll: Enable auto gate control for all MX postdividers Enable hardware gate control for all dpll MX and X2 postdividers. This requires the allow_idle/deny_idle functions to be populated for all clock nodes (mx/x2 post dividers) in clkops. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-02-25 15:49:02 -07:00
extern const struct clkops clkops_omap4_dpllmx_ops;
OMAP3/4 clock: split into per-chip family files clock34xx_data.c now contains data for the OMAP34xx family, the OMAP36xx family, and the OMAP3517 family, so rename it to clock3xxx_data.c. Rename clock34xx.c to clock3xxx.c, and move the chip family-specific clock functions to clock34xx.c, clock36xx.c, or clock3517.c, as appropriate. So now "clock3xxx.*" refers to the OMAP3 superset. The main goal here is to prepare to compile chip family-specific clock functions only for kernel builds that target that chip family. To get to that point, we also need to add CONFIG_SOC_* options for those other chip families; that will be done in future patches, planned for 2.6.35. OMAP4 is also affected by this. It duplicated the OMAP3 non-CORE DPLL clkops structure. The OMAP4 variant of this clkops structure has been removed, and since there was nothing else currently in clock44xx.c, it too has been removed -- it can always be added back later when there is some content for it. (The OMAP4 clock autogeneration scripts have been updated accordingly.) Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Ranjith Lohithakshan <ranjithl@ti.com> Cc: Tony Lindgren <tony@atomide.com>
2010-02-22 22:09:20 -07:00
ARM: OMAP3+: clock: Move common clksel_rate & clock data to common file OMAP3, OMAP4 and AM33xx share some common data like, clksel_rate oscillator clock input (Virtual clock nodes), required for clock tree; so move common data to common data file so that it can be reused. [hvaibhav@ti.com: Created separate commit from Paul's developement branch] Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-05-29 03:56:40 -06:00
/* clksel_rate blocks shared between OMAP44xx and AM33xx */
extern const struct clksel_rate div_1_0_rates[];
extern const struct clksel_rate div_1_1_rates[];
extern const struct clksel_rate div_1_2_rates[];
extern const struct clksel_rate div_1_3_rates[];
extern const struct clksel_rate div_1_4_rates[];
extern const struct clksel_rate div31_1to31_rates[];
/* clocks shared between various OMAP SoCs */
extern struct clk virt_19200000_ck;
extern struct clk virt_26000000_ck;
ARM: OMAP3+: clock33xx: Add AM33XX clock tree data AM33XX clock implementation is different than any existing OMAP family of devices. Although DPLL module is similar to OMAP4 device, but the usage is very much different than OMAP4. AM33XX has different peripheral set and each module gets integrated to the clock framework differently than OMAP family of devices. This patch adds full Clock tree data for AM33XX family of devices and also integrates it into existing OMAP framework. Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Signed-off-by: Afzal Mohammed <afzal@ti.com> Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Cc: Kevin Hilman <khilman@ti.com> Cc: Rajendra Nayak <rnayak@ti.com> CC: Tony Lindgren <tony@atomide.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com> [paul@pwsan.com: updated to apply; changed 'soc_is_am33xx' to 'cpu_is_am33xx' to match usage in Tony's current am33xx branch] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-05-29 03:56:41 -06:00
extern int am33xx_clk_init(void);
ARM: OMAP2: Add common clock framework for 24xx and 34xx This patch adds a common clock framework for 24xx and 34xx. Note that this patch does not add it to Makefile until in next patch. Some functions are modified from earlier 24xx clock framework code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-18 02:22:06 -06:00
#endif