linux/arch/arm/mach-omap2/smartreflex-class3.c
Andrii Tseglytskyi 299066bb37 PM / AVS: SmartReflex: use omap_sr * for enable/disable interface
SmartReflex driver interface is natively divided to two parts:

- external SmartReflex interface
- interface between SmartReflex driver and SmartReflex Class

Functions which belong to AVS class interface can use
struct omap_sr* instead of struct voltatedomain*, to provide a
direct connection between SR driver and SR class. This allows
us to optimize and not do additional lookups where none is
required.

sr_enable() and sr_disable() are interface functions between
SR driver and SR class. They are typically used by Class driver
to enable/disable SmartReflex hardware module.
Now they take struct omap_sr* as input parameter.

Signed-off-by: Andrii Tseglytskyi <andrii.tseglytskyi@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
2013-06-10 10:46:18 -07:00

63 lines
1.4 KiB
C

/*
* Smart reflex Class 3 specific implementations
*
* Author: Thara Gopinath <thara@ti.com>
*
* Copyright (C) 2010 Texas Instruments, Inc.
* Thara Gopinath <thara@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/power/smartreflex.h>
#include "soc.h"
#include "voltage.h"
static int sr_class3_enable(struct omap_sr *sr)
{
unsigned long volt = voltdm_get_voltage(sr->voltdm);
if (!volt) {
pr_warning("%s: Curr voltage unknown. Cannot enable %s\n",
__func__, sr->name);
return -ENODATA;
}
omap_vp_enable(sr->voltdm);
return sr_enable(sr, volt);
}
static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
{
sr_disable_errgen(sr);
omap_vp_disable(sr->voltdm);
sr_disable(sr);
if (is_volt_reset)
voltdm_reset(sr->voltdm);
return 0;
}
static int sr_class3_configure(struct omap_sr *sr)
{
return sr_configure_errgen(sr);
}
/* SR class3 structure */
static struct omap_sr_class_data class3_data = {
.enable = sr_class3_enable,
.disable = sr_class3_disable,
.configure = sr_class3_configure,
.class_type = SR_CLASS3,
};
/* Smartreflex Class3 init API to be called from board file */
static int __init sr_class3_init(void)
{
pr_info("SmartReflex Class3 initialized\n");
return sr_register_class(&class3_data);
}
omap_late_initcall(sr_class3_init);