1540f21406
The OMAP clockdomain code and data is all OMAP2+-specific. This seems unlikely to change any time soon. Move plat-omap/include/plat/clockdomain.h to mach-omap2/clockdomain.h. The primary point of doing this is to remove the temptation for unrelated upper-layer code to access clockdomain code and data directly. DSPBridge also uses the clockdomain headers for some reason, so, modify it also. The DSPBridge code should not be including the clockdomain headers; these should be removed. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Omar Ramirez Luna <omar.ramirez@ti.com> Cc: Felipe Contreras <felipe.contreras@gmail.com> Cc: Greg Kroah-Hartman <greg@kroah.com> Tested-by: Rajendra Nayak <rnayak@ti.com> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
148 lines
3.1 KiB
C
148 lines
3.1 KiB
C
/*
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* pm.c - Common OMAP2+ power management-related code
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*
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* Copyright (C) 2010 Texas Instruments, Inc.
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* Copyright (C) 2010 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/err.h>
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#include <plat/omap-pm.h>
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#include <plat/omap_device.h>
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#include <plat/common.h>
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#include <plat/powerdomain.h>
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#include "clockdomain.h"
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static struct omap_device_pm_latency *pm_lats;
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static struct device *mpu_dev;
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static struct device *iva_dev;
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static struct device *l3_dev;
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static struct device *dsp_dev;
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struct device *omap2_get_mpuss_device(void)
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{
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WARN_ON_ONCE(!mpu_dev);
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return mpu_dev;
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}
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struct device *omap2_get_iva_device(void)
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{
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WARN_ON_ONCE(!iva_dev);
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return iva_dev;
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}
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struct device *omap2_get_l3_device(void)
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{
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WARN_ON_ONCE(!l3_dev);
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return l3_dev;
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}
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struct device *omap4_get_dsp_device(void)
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{
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WARN_ON_ONCE(!dsp_dev);
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return dsp_dev;
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}
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EXPORT_SYMBOL(omap4_get_dsp_device);
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/* static int _init_omap_device(struct omap_hwmod *oh, void *user) */
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static int _init_omap_device(char *name, struct device **new_dev)
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{
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struct omap_hwmod *oh;
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struct omap_device *od;
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oh = omap_hwmod_lookup(name);
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if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
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__func__, name))
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return -ENODEV;
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od = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false);
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if (WARN(IS_ERR(od), "%s: could not build omap_device for %s\n",
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__func__, name))
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return -ENODEV;
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*new_dev = &od->pdev.dev;
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return 0;
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}
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/*
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* Build omap_devices for processors and bus.
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*/
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static void omap2_init_processor_devices(void)
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{
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_init_omap_device("mpu", &mpu_dev);
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_init_omap_device("iva", &iva_dev);
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if (cpu_is_omap44xx()) {
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_init_omap_device("l3_main_1", &l3_dev);
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_init_omap_device("dsp", &dsp_dev);
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} else {
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_init_omap_device("l3_main", &l3_dev);
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}
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}
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/*
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* This sets pwrdm state (other than mpu & core. Currently only ON &
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* RET are supported. Function is assuming that clkdm doesn't have
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* hw_sup mode enabled.
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*/
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int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
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{
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u32 cur_state;
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int sleep_switch = 0;
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int ret = 0;
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if (pwrdm == NULL || IS_ERR(pwrdm))
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return -EINVAL;
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while (!(pwrdm->pwrsts & (1 << state))) {
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if (state == PWRDM_POWER_OFF)
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return ret;
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state--;
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}
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cur_state = pwrdm_read_next_pwrst(pwrdm);
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if (cur_state == state)
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return ret;
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if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
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omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
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sleep_switch = 1;
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pwrdm_wait_transition(pwrdm);
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}
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ret = pwrdm_set_next_pwrst(pwrdm, state);
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if (ret) {
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printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
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pwrdm->name);
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goto err;
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}
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if (sleep_switch) {
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omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
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pwrdm_wait_transition(pwrdm);
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pwrdm_state_switch(pwrdm);
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}
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err:
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return ret;
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}
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static int __init omap2_common_pm_init(void)
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{
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omap2_init_processor_devices();
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omap_pm_if_init();
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return 0;
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}
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postcore_initcall(omap2_common_pm_init);
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