From 4aef7a2a5aad52b60ac1a2f3cee055b8271b70d5 Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Fri, 25 Feb 2011 16:06:47 -0700 Subject: OMAP: clockdomain: Arch specific funcs to handle deps Define the following architecture specific funtions for omap2/3 .clkdm_add_wkdep .clkdm_del_wkdep .clkdm_read_wkdep .clkdm_clear_all_wkdeps .clkdm_add_sleepdep .clkdm_del_sleepdep .clkdm_read_sleepdep .clkdm_clear_all_sleepdeps Convert the platform-independent framework to call these functions. With this also move the clkdm lookups for all wkdep_srcs and sleepdep_srcs at clkdm_init. Signed-off-by: Rajendra Nayak [paul@pwsan.com: fixed loop termination conditions in omap*_clkdm_clear_all_*(); thanks to Kevin Hilman for finding and helping fix those bugs; also avoid re-resolving clockdomains during init; abstracted out clkdm_dep walk] Cc: Kevin Hilman Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/clockdomain2xxx_3xxx.c | 130 +++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 arch/arm/mach-omap2/clockdomain2xxx_3xxx.c (limited to 'arch/arm/mach-omap2/clockdomain2xxx_3xxx.c') diff --git a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c new file mode 100644 index 000000000000..a1fd6fd5a466 --- /dev/null +++ b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c @@ -0,0 +1,130 @@ +/* + * 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 + * + * 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 +#include +#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 int 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); + return 0; +} + +static int 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); + return 0; +} + +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 int 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; + if (!cd->clkdm) + continue; /* only happens if data is erroneous */ + + /* 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); + return 0; +} + +static int omap3_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); + return 0; +} + +static int omap3_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); + return 0; +} + +static int omap3_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 int omap3_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; + if (!cd->clkdm) + continue; /* only happens if data is erroneous */ + + /* 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); + return 0; +} + +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, +}; + +struct clkdm_ops omap3_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 = omap3_clkdm_add_sleepdep, + .clkdm_del_sleepdep = omap3_clkdm_del_sleepdep, + .clkdm_read_sleepdep = omap3_clkdm_read_sleepdep, + .clkdm_clear_all_sleepdeps = omap3_clkdm_clear_all_sleepdeps, +}; -- cgit v1.2.3-59-g8ed1b