[2/5] OMAP: clockdomain: Arch specific funcs to handle deps

Message ID	1294237365-10893-3-git-send-email-rnayak@ti.com (mailing list archive)
State	Superseded, archived
Delegated to:	Paul Walmsley
Headers	show Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p05EN07g001905 for <patchwork-omap@patchwork.kernel.org>; Wed, 5 Jan 2011 14:23:03 GMT From: Rajendra Nayak <rnayak@ti.com> To: linux-omap@vger.kernel.org Cc: paul@pwsan.com, khilman@deeprootsystems.com, b-cousson@ti.com, Rajendra Nayak <rnayak@ti.com> Subject: [PATCH 2/5] OMAP: clockdomain: Arch specific funcs to handle deps Date: Wed, 5 Jan 2011 19:52:42 +0530 Message-Id: <1294237365-10893-3-git-send-email-rnayak@ti.com> In-Reply-To: <1294237365-10893-2-git-send-email-rnayak@ti.com> References: <1294237365-10893-1-git-send-email-rnayak@ti.com> <1294237365-10893-2-git-send-email-rnayak@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 4ab82f6..d28db0a 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -102,8 +102,10 @@ obj-$(CONFIG_ARCH_OMAP4) += $(powerdomain-common) \ # PRCM clockdomain control obj-$(CONFIG_ARCH_OMAP2) += clockdomain.o \ + clockdomain2xxx_3xxx.o \ clockdomains2xxx_3xxx_data.o obj-$(CONFIG_ARCH_OMAP3) += clockdomain.o \ + clockdomain2xxx_3xxx.o \ clockdomains2xxx_3xxx_data.o obj-$(CONFIG_ARCH_OMAP4) += clockdomain.o \ clockdomains44xx_data.o diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c index 3e40184..c32480c 100644 --- a/arch/arm/mach-omap2/clockdomain.c +++ b/arch/arm/mach-omap2/clockdomain.c @@ -308,6 +308,7 @@ void clkdm_init(struct clockdomain **clkdms, struct clockdomain **c = NULL; struct clockdomain *clkdm; struct clkdm_autodep *autodep = NULL; + struct clkdm_dep *cd; if (!custom_funcs) WARN(1, "No custom clkdm functions registered\n"); @@ -333,7 +334,18 @@ void clkdm_init(struct clockdomain **clkdms, else if (clkdm->flags & CLKDM_CAN_DISABLE_AUTO) omap2_clkdm_deny_idle(clkdm); + for (cd = clkdm->wkdep_srcs; cd && cd->clkdm_name; cd++) { + if (!omap_chip_is(cd->omap_chip)) + continue; + cd->clkdm = _clkdm_lookup(cd->clkdm_name); + } clkdm_clear_all_wkdeps(clkdm); + + for (cd = clkdm->sleepdep_srcs; cd && cd->clkdm_name; cd++) { + if (!omap_chip_is(cd->omap_chip)) + continue; + cd->clkdm = _clkdm_lookup(cd->clkdm_name); + } clkdm_clear_all_sleepdeps(clkdm); } } @@ -445,8 +457,8 @@ int clkdm_add_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) pr_debug("clockdomain: hardware will wake up %s when %s wakes " "up\n", clkdm1->name, clkdm2->name); - omap2_prm_set_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP); + if (arch_clkdm && arch_clkdm->clkdm_add_wkdep) + arch_clkdm->clkdm_add_wkdep(clkdm1, clkdm2); } return 0; @@ -480,8 +492,8 @@ int clkdm_del_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) pr_debug("clockdomain: hardware will no longer wake up %s " "after %s wakes up\n", clkdm1->name, clkdm2->name); - omap2_prm_clear_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP); + if (arch_clkdm && arch_clkdm->clkdm_del_wkdep) + arch_clkdm->clkdm_del_wkdep(clkdm1, clkdm2); } return 0; @@ -516,8 +528,10 @@ int clkdm_read_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) } /* XXX It's faster to return the atomic wkdep_usecount */ - return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP, - (1 << clkdm2->dep_bit)); + if (arch_clkdm && arch_clkdm->clkdm_read_wkdep) + return arch_clkdm->clkdm_read_wkdep(clkdm1, clkdm2); + + return -EINVAL; } /** @@ -532,25 +546,11 @@ int clkdm_read_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) */ int clkdm_clear_all_wkdeps(struct clockdomain *clkdm) { - struct clkdm_dep *cd; - u32 mask = 0; - if (!clkdm) return -EINVAL; - for (cd = clkdm->wkdep_srcs; cd && cd->clkdm_name; cd++) { - if (!omap_chip_is(cd->omap_chip)) - continue; - - if (!cd->clkdm && cd->clkdm_name) - cd->clkdm = _clkdm_lookup(cd->clkdm_name); - - /* PRM accesses are slow, so minimize them */ - mask |= 1 << cd->clkdm->dep_bit; - atomic_set(&cd->wkdep_usecount, 0); - } - - omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, PM_WKDEP); + if (arch_clkdm && arch_clkdm->clkdm_clear_all_wkdeps) + arch_clkdm->clkdm_clear_all_wkdeps(clkdm); return 0; } @@ -589,9 +589,8 @@ int clkdm_add_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) pr_debug("clockdomain: will prevent %s from sleeping if %s " "is active\n", clkdm1->name, clkdm2->name); - omap2_cm_set_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP); + if (arch_clkdm && arch_clkdm->clkdm_add_sleepdep) + arch_clkdm->clkdm_add_sleepdep(clkdm1, clkdm2); } return 0; @@ -632,9 +631,8 @@ int clkdm_del_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) "sleeping if %s is active\n", clkdm1->name, clkdm2->name); - omap2_cm_clear_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP); + if (arch_clkdm && arch_clkdm->clkdm_del_sleepdep) + arch_clkdm->clkdm_del_sleepdep(clkdm1, clkdm2); } return 0; @@ -675,9 +673,10 @@ int clkdm_read_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) } /* XXX It's faster to return the atomic sleepdep_usecount */ - return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP, - (1 << clkdm2->dep_bit)); + if (arch_clkdm && arch_clkdm->clkdm_read_sleepdep) + return arch_clkdm->clkdm_read_sleepdep(clkdm1, clkdm2); + + return -EINVAL; } /** @@ -692,29 +691,14 @@ int clkdm_read_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) */ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm) { - struct clkdm_dep *cd; - u32 mask = 0; - if (!cpu_is_omap34xx()) return -EINVAL; if (!clkdm) return -EINVAL; - for (cd = clkdm->sleepdep_srcs; cd && cd->clkdm_name; cd++) { - if (!omap_chip_is(cd->omap_chip)) - continue; - - if (!cd->clkdm && cd->clkdm_name) - cd->clkdm = _clkdm_lookup(cd->clkdm_name); - - /* PRM accesses are slow, so minimize them */ - mask |= 1 << cd->clkdm->dep_bit; - atomic_set(&cd->sleepdep_usecount, 0); - } - - omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP); + if (arch_clkdm && arch_clkdm->clkdm_clear_all_sleepdeps) + arch_clkdm->clkdm_clear_all_sleepdeps(clkdm); return 0; } diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h index 346efa2..a9cda27 100644 --- a/arch/arm/mach-omap2/clockdomain.h +++ b/arch/arm/mach-omap2/clockdomain.h @@ -181,4 +181,6 @@ int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk); extern void __init omap2_clockdomains_init(void); extern void __init omap44xx_clockdomains_init(void); +extern struct clkdm_ops omap2_clkdm_operations; + #endif diff --git a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c new file mode 100644 index 0000000..a7303bd --- /dev/null +++ b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c @@ -0,0 +1,113 @@ +/* + * OMAP2 and OMAP3 clockdomain control + * + * Copyright (C) 2008-2010 Texas Instruments, Inc. + * Copyright (C) 2008-2010 Nokia Corporation + * + * Derived from mach-omap2/clockdomain.c written by Paul Walmsley + * Rajendra Nayak <rnayak@ti.com> + * + * 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. + */ + +#include <linux/types.h> +#include <plat/prcm.h> +#include "prm.h" +#include "prm2xxx_3xxx.h" +#include "cm.h" +#include "cm2xxx_3xxx.h" +#include "cm-regbits-24xx.h" +#include "cm-regbits-34xx.h" +#include "clockdomain.h" + +static void omap2_clkdm_add_wkdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + omap2_prm_set_mod_reg_bits((1 << clkdm2->dep_bit), + clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP); +} + +static void omap2_clkdm_del_wkdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + omap2_prm_clear_mod_reg_bits((1 << clkdm2->dep_bit), + clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP); +} + +static int omap2_clkdm_read_wkdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, + PM_WKDEP, (1 << clkdm2->dep_bit)); +} + +static void omap2_clkdm_clear_all_wkdeps(struct clockdomain *clkdm) +{ + struct clkdm_dep *cd; + u32 mask = 0; + + for (cd = clkdm->wkdep_srcs; cd && cd->clkdm_name; cd++) { + if (!omap_chip_is(cd->omap_chip)) + continue; + + /* PRM accesses are slow, so minimize them */ + mask |= 1 << cd->clkdm->dep_bit; + atomic_set(&cd->wkdep_usecount, 0); + } + + omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, + PM_WKDEP); +} + +static void omap2_clkdm_add_sleepdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + omap2_cm_set_mod_reg_bits((1 << clkdm2->dep_bit), + clkdm1->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP); +} + +static void omap2_clkdm_del_sleepdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + omap2_cm_clear_mod_reg_bits((1 << clkdm2->dep_bit), + clkdm1->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP); +} + +static int omap2_clkdm_read_sleepdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP, (1 << clkdm2->dep_bit)); +} + +static void omap2_clkdm_clear_all_sleepdeps(struct clockdomain *clkdm) +{ + struct clkdm_dep *cd; + u32 mask = 0; + + for (cd = clkdm->sleepdep_srcs; cd && cd->clkdm_name; cd++) { + if (!omap_chip_is(cd->omap_chip)) + continue; + + /* PRM accesses are slow, so minimize them */ + mask |= 1 << cd->clkdm->dep_bit; + atomic_set(&cd->sleepdep_usecount, 0); + } + omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP); +} + +struct clkdm_ops omap2_clkdm_operations = { + .clkdm_add_wkdep = omap2_clkdm_add_wkdep, + .clkdm_del_wkdep = omap2_clkdm_del_wkdep, + .clkdm_read_wkdep = omap2_clkdm_read_wkdep, + .clkdm_clear_all_wkdeps = omap2_clkdm_clear_all_wkdeps, + .clkdm_add_sleepdep = omap2_clkdm_add_sleepdep, + .clkdm_del_sleepdep = omap2_clkdm_del_sleepdep, + .clkdm_read_sleepdep = omap2_clkdm_read_sleepdep, + .clkdm_clear_all_sleepdeps = omap2_clkdm_clear_all_sleepdeps, +}; diff --git a/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c b/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c index 8cab07a..ba0bbbd 100644 --- a/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c +++ b/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c @@ -856,5 +856,5 @@ static struct clockdomain *clockdomains_omap2[] __initdata = { void __init omap2_clockdomains_init(void) { - clkdm_init(clockdomains_omap2, clkdm_autodeps, NULL); + clkdm_init(clockdomains_omap2, clkdm_autodeps, &omap2_clkdm_operations); }

[2/5] OMAP: clockdomain: Arch specific funcs to handle deps

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