mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
9c80f3aa8b
AM33XX PRCM module consists of various clockdomains, in all total we have 18 clockdomains available, with following controlling options, - SW Sleep: sw forced sleep transition - SW Wakeup: sw forced wakeup transition This patch adds all available clockdomain data, respective clockdomain operations for AM33XX family of device, 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: removed CLKDM_NO_AUTODEPS from clockdomain flags, removed unnecessary .clktrctrl_offs field; updated for 3.5] Signed-off-by: Paul Walmsley <paul@pwsan.com>
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/*
|
|
* AM33XX clockdomain control
|
|
*
|
|
* Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Vaibhav Hiremath <hvaibhav@ti.com>
|
|
*
|
|
* Derived from mach-omap2/clockdomain44xx.c written by Rajendra Nayak
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation version 2.
|
|
*
|
|
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
|
* kind, whether express or implied; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include "clockdomain.h"
|
|
#include "cm33xx.h"
|
|
|
|
|
|
static int am33xx_clkdm_sleep(struct clockdomain *clkdm)
|
|
{
|
|
am33xx_cm_clkdm_force_sleep(clkdm->cm_inst, clkdm->clkdm_offs);
|
|
return 0;
|
|
}
|
|
|
|
static int am33xx_clkdm_wakeup(struct clockdomain *clkdm)
|
|
{
|
|
am33xx_cm_clkdm_force_wakeup(clkdm->cm_inst, clkdm->clkdm_offs);
|
|
return 0;
|
|
}
|
|
|
|
static void am33xx_clkdm_allow_idle(struct clockdomain *clkdm)
|
|
{
|
|
am33xx_cm_clkdm_enable_hwsup(clkdm->cm_inst, clkdm->clkdm_offs);
|
|
}
|
|
|
|
static void am33xx_clkdm_deny_idle(struct clockdomain *clkdm)
|
|
{
|
|
am33xx_cm_clkdm_disable_hwsup(clkdm->cm_inst, clkdm->clkdm_offs);
|
|
}
|
|
|
|
static int am33xx_clkdm_clk_enable(struct clockdomain *clkdm)
|
|
{
|
|
if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
|
|
return am33xx_clkdm_wakeup(clkdm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int am33xx_clkdm_clk_disable(struct clockdomain *clkdm)
|
|
{
|
|
bool hwsup = false;
|
|
|
|
hwsup = am33xx_cm_is_clkdm_in_hwsup(clkdm->cm_inst, clkdm->clkdm_offs);
|
|
|
|
if (!hwsup && (clkdm->flags & CLKDM_CAN_FORCE_SLEEP))
|
|
am33xx_clkdm_sleep(clkdm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct clkdm_ops am33xx_clkdm_operations = {
|
|
.clkdm_sleep = am33xx_clkdm_sleep,
|
|
.clkdm_wakeup = am33xx_clkdm_wakeup,
|
|
.clkdm_allow_idle = am33xx_clkdm_allow_idle,
|
|
.clkdm_deny_idle = am33xx_clkdm_deny_idle,
|
|
.clkdm_clk_enable = am33xx_clkdm_clk_enable,
|
|
.clkdm_clk_disable = am33xx_clkdm_clk_disable,
|
|
};
|