diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 19:28:15 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 19:28:15 -0700 |
commit | 0df0914d414a504b975f3cc66ace0c16ef55b7f3 (patch) | |
tree | c97ffa357943a8b226cdec1b9632c4cede813205 /arch/arm/mach-omap2/clockdomain2xxx_3xxx.c | |
parent | 6899608533410557e6698cb9d4ff6df553916e98 (diff) | |
parent | 05f689400ea5fa3d71af82f910c8b140f87ad1f3 (diff) |
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (258 commits)
omap: zoom: host should not pull up wl1271's irq line
arm: plat-omap: iommu: fix request_mem_region() error path
OMAP2+: Common CPU DIE ID reading code reads wrong registers for OMAP4430
omap4: mux: Remove duplicate mux modes
omap: iovmm: don't check 'da' to set IOVMF_DA_FIXED flag
omap: iovmm: disallow mapping NULL address when IOVMF_DA_ANON is set
omap2+: mux: Fix compile when CONFIG_OMAP_MUX is not selected
omap4: board-omap4panda: Initialise the serial pads
omap3: board-3430sdp: Initialise the serial pads
omap4: board-4430sdp: Initialise the serial pads
omap2+: mux: Add macro for configuring static with omap_hwmod_mux_init
omap2+: mux: Remove the use of IDLE flag
omap2+: Add separate list for dynamic pads to mux
perf: add OMAP support for the new power events
OMAP4: Add IVA OPP enteries.
OMAP4: Update Voltage Rail Values for MPU, IVA and CORE
OMAP4: Enable 800 MHz and 1 GHz MPU-OPP
OMAP3+: OPP: Replace voltage values with Macros
OMAP3: wdtimer: Fix CORE idle transition
Watchdog: omap_wdt: add fine grain runtime-pm
...
Fix up various conflicts in
- arch/arm/mach-omap2/board-omap3evm.c
- arch/arm/mach-omap2/clock3xxx_data.c
- arch/arm/mach-omap2/usb-musb.c
- arch/arm/plat-omap/include/plat/usb.h
- drivers/usb/musb/musb_core.h
Diffstat (limited to 'arch/arm/mach-omap2/clockdomain2xxx_3xxx.c')
-rw-r--r-- | arch/arm/mach-omap2/clockdomain2xxx_3xxx.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c new file mode 100644 index 00000000000..48d0db7e606 --- /dev/null +++ b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c @@ -0,0 +1,274 @@ +/* + * 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 "prm-regbits-24xx.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; +} + +static int omap2_clkdm_sleep(struct clockdomain *clkdm) +{ + omap2_cm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK, + clkdm->pwrdm.ptr->prcm_offs, + OMAP2_PM_PWSTCTRL); + return 0; +} + +static int omap2_clkdm_wakeup(struct clockdomain *clkdm) +{ + omap2_cm_clear_mod_reg_bits(OMAP24XX_FORCESTATE_MASK, + clkdm->pwrdm.ptr->prcm_offs, + OMAP2_PM_PWSTCTRL); + return 0; +} + +static void omap2_clkdm_allow_idle(struct clockdomain *clkdm) +{ + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_add_autodeps(clkdm); + + omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); +} + +static void omap2_clkdm_deny_idle(struct clockdomain *clkdm) +{ + omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_del_autodeps(clkdm); +} + +static void _enable_hwsup(struct clockdomain *clkdm) +{ + if (cpu_is_omap24xx()) + omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + else if (cpu_is_omap34xx()) + omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); +} + +static void _disable_hwsup(struct clockdomain *clkdm) +{ + if (cpu_is_omap24xx()) + omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + else if (cpu_is_omap34xx()) + omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); +} + + +static int omap2_clkdm_clk_enable(struct clockdomain *clkdm) +{ + bool hwsup = false; + + if (!clkdm->clktrctrl_mask) + return 0; + + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + _disable_hwsup(clkdm); + _clkdm_add_autodeps(clkdm); + _enable_hwsup(clkdm); + } else { + clkdm_wakeup(clkdm); + } + + return 0; +} + +static int omap2_clkdm_clk_disable(struct clockdomain *clkdm) +{ + bool hwsup = false; + + if (!clkdm->clktrctrl_mask) + return 0; + + hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + _disable_hwsup(clkdm); + _clkdm_del_autodeps(clkdm); + _enable_hwsup(clkdm); + } else { + clkdm_sleep(clkdm); + } + + return 0; +} + +static int omap3_clkdm_sleep(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + return 0; +} + +static int omap3_clkdm_wakeup(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + return 0; +} + +static void omap3_clkdm_allow_idle(struct clockdomain *clkdm) +{ + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_add_autodeps(clkdm); + + omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); +} + +static void omap3_clkdm_deny_idle(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_del_autodeps(clkdm); +} + +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_sleep = omap2_clkdm_sleep, + .clkdm_wakeup = omap2_clkdm_wakeup, + .clkdm_allow_idle = omap2_clkdm_allow_idle, + .clkdm_deny_idle = omap2_clkdm_deny_idle, + .clkdm_clk_enable = omap2_clkdm_clk_enable, + .clkdm_clk_disable = omap2_clkdm_clk_disable, +}; + +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, + .clkdm_sleep = omap3_clkdm_sleep, + .clkdm_wakeup = omap3_clkdm_wakeup, + .clkdm_allow_idle = omap3_clkdm_allow_idle, + .clkdm_deny_idle = omap3_clkdm_deny_idle, + .clkdm_clk_enable = omap2_clkdm_clk_enable, + .clkdm_clk_disable = omap2_clkdm_clk_disable, +}; |