mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 19:53:59 +08:00
fd1478cd61
Add OPP data for OMAP34xx and OMAP36xx and initialization functions to populate OPP tables based on current SoC. introduce an OMAP generic opp initialization routine which OMAP3 and OMAP4+ SoCs can use to register their OPP definitions. Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/*
|
|
* OMAP SoC specific OPP wrapper function
|
|
*
|
|
* Copyright (C) 2009-2010 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Nishanth Menon
|
|
* Kevin Hilman
|
|
* Copyright (C) 2010 Nokia Corporation.
|
|
* Eduardo Valentin
|
|
*
|
|
* 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.
|
|
*
|
|
* 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/module.h>
|
|
#include <linux/opp.h>
|
|
|
|
#include <plat/omap_device.h>
|
|
|
|
#include "omap_opp_data.h"
|
|
|
|
/* Temp variable to allow multiple calls */
|
|
static u8 __initdata omap_table_init;
|
|
|
|
/**
|
|
* omap_init_opp_table() - Initialize opp table as per the CPU type
|
|
* @opp_def: opp default list for this silicon
|
|
* @opp_def_size: number of opp entries for this silicon
|
|
*
|
|
* Register the initial OPP table with the OPP library based on the CPU
|
|
* type. This is meant to be used only by SoC specific registration.
|
|
*/
|
|
int __init omap_init_opp_table(struct omap_opp_def *opp_def,
|
|
u32 opp_def_size)
|
|
{
|
|
int i, r;
|
|
|
|
if (!opp_def || !opp_def_size) {
|
|
pr_err("%s: invalid params!\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Initialize only if not already initialized even if the previous
|
|
* call failed, because, no reason we'd succeed again.
|
|
*/
|
|
if (omap_table_init)
|
|
return -EEXIST;
|
|
omap_table_init = 1;
|
|
|
|
/* Lets now register with OPP library */
|
|
for (i = 0; i < opp_def_size; i++) {
|
|
struct omap_hwmod *oh;
|
|
struct device *dev;
|
|
|
|
if (!opp_def->hwmod_name) {
|
|
pr_err("%s: NULL name of omap_hwmod, failing [%d].\n",
|
|
__func__, i);
|
|
return -EINVAL;
|
|
}
|
|
oh = omap_hwmod_lookup(opp_def->hwmod_name);
|
|
if (!oh || !oh->od) {
|
|
pr_warn("%s: no hwmod or odev for %s, [%d] "
|
|
"cannot add OPPs.\n", __func__,
|
|
opp_def->hwmod_name, i);
|
|
return -EINVAL;
|
|
}
|
|
dev = &oh->od->pdev.dev;
|
|
|
|
r = opp_add(dev, opp_def->freq, opp_def->u_volt);
|
|
if (r) {
|
|
dev_err(dev, "%s: add OPP %ld failed for %s [%d] "
|
|
"result=%d\n",
|
|
__func__, opp_def->freq,
|
|
opp_def->hwmod_name, i, r);
|
|
} else {
|
|
if (!opp_def->default_available)
|
|
r = opp_disable(dev, opp_def->freq);
|
|
if (r)
|
|
dev_err(dev, "%s: disable %ld failed for %s "
|
|
"[%d] result=%d\n",
|
|
__func__, opp_def->freq,
|
|
opp_def->hwmod_name, i, r);
|
|
}
|
|
opp_def++;
|
|
}
|
|
|
|
return 0;
|
|
}
|