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/*
* Remote processor resources
*
* Copyright (C) 2011 Texas Instruments, Inc.
* Copyright (C) 2011 Google, Inc.
*
* Fernando Guzman Lugo <fernando.lugo@ti.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <plat/omap_device.h>
#include <plat/omap_hwmod.h>
#include <plat/clock.h>
#include <plat/rpres.h>
#include <linux/pm_qos_params.h>
#include <plat/common.h>
#include <plat/omap-pm.h>
#include "../../arch/arm/mach-omap2/dvfs.h"
static void _enable_optional_clocks(struct omap_hwmod *oh)
{
struct omap_hwmod_opt_clk *oc;
int i;
pr_debug("%s: %s: enabling optional clocks\n", __func__, oh->name);
for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
if (oc->_clk)
clk_enable(oc->_clk);
}
static void _disable_optional_clocks(struct omap_hwmod *oh)
{
struct omap_hwmod_opt_clk *oc;
int i;
pr_debug("%s: %s: disabling optional clocks\n", __func__, oh->name);
for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
if (oc->_clk)
clk_disable(oc->_clk);
}
static int rpres_iss_enable(struct platform_device *pdev)
{
int ret;
struct rpres_platform_data *pdata = pdev->dev.platform_data;
ret = omap_device_enable(pdev);
if (!ret)
_enable_optional_clocks(pdata->oh);
return ret;
}
static int rpres_iss_shutdown(struct platform_device *pdev)
{
int ret;
struct rpres_platform_data *pdata = pdev->dev.platform_data;
omap_hwmod_reset(pdata->oh);
ret = omap_device_idle(pdev);
if (!ret)
_disable_optional_clocks(pdata->oh);
return ret;
}
static int rpres_fdif_shutdown(struct platform_device *pdev)
{
struct rpres_platform_data *pdata = pdev->dev.platform_data;
omap_hwmod_reset(pdata->oh);
return omap_device_idle(pdev);
}
static int rpres_scale_dev(struct platform_device *pdev, long val)
{
return omap_device_scale(&pdev->dev, &pdev->dev, val);
}
static int rpres_set_dev_lat(struct platform_device *pdev, long val)
{
return omap_pm_set_max_dev_wakeup_lat(&pdev->dev, &pdev->dev, val);
}
static int rpres_set_l3_bw(struct platform_device *pdev, long val)
{
return omap_pm_set_min_bus_tput(&pdev->dev, OCP_INITIATOR_AGENT, val);
}
static struct rpres_ops iss_ops = {
.start = rpres_iss_enable,
.stop = rpres_iss_shutdown,
.set_lat = rpres_set_dev_lat,
.set_bw = rpres_set_l3_bw,
};
static struct rpres_ops ivahd_ops = {
.start = omap_device_enable,
.stop = omap_device_shutdown,
.set_lat = rpres_set_dev_lat,
.set_bw = rpres_set_l3_bw,
.scale_dev = rpres_scale_dev,
};
static struct rpres_ops fdif_ops = {
.start = omap_device_enable,
.stop = rpres_fdif_shutdown,
.set_lat = rpres_set_dev_lat,
.set_bw = rpres_set_l3_bw,
.scale_dev = rpres_scale_dev,
};
static struct rpres_ops gen_ops = {
.start = omap_device_enable,
.stop = omap_device_shutdown,
};
static struct omap_device_pm_latency rpres_latency[] = {
{
.deactivate_func = omap_device_idle_hwmods,
.activate_func = omap_device_enable_hwmods,
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
},
};
static struct rpres_platform_data rpres_data[] = {
{
.name = "rpres_iva",
.oh_name = "iva",
.ops = &ivahd_ops,
.get_dev = omap2_get_iva_device,
},
{
.name = "rpres_iva_seq0",
.oh_name = "iva_seq0",
.ops = &gen_ops,
},
{
.name = "rpres_iva_seq1",
.oh_name = "iva_seq1",
.ops = &gen_ops,
},
{
.name = "rpres_iss",
.oh_name = "iss",
.ops = &iss_ops,
.opt_clk_name = "ctrlclk",
},
{
.name = "rpres_fdif",
.oh_name = "fdif",
.ops = &fdif_ops,
.get_dev = omap4_get_fdif_device,
},
{
.name = "rpres_sl2if",
.oh_name = "sl2if",
.ops = &gen_ops,
},
};
static int __init init(void)
{
int i, ret;
struct omap_hwmod *oh;
struct omap_device_pm_latency *ohl = rpres_latency;
int ohl_cnt = ARRAY_SIZE(rpres_latency);
struct omap_device *od;
struct device *dev;
struct platform_device *pdev;
for (i = 0; i < ARRAY_SIZE(rpres_data); i++) {
oh = omap_hwmod_lookup(rpres_data[i].oh_name);
if (!oh) {
pr_err("No hdmod for %s\n", rpres_data[i].name);
continue;
}
rpres_data[i].oh = oh;
if (rpres_data[i].get_dev) {
dev = rpres_data[i].get_dev();
if (!dev) {
pr_err("No dev for %s\n", rpres_data[i].name);
continue;
}
pdev = to_platform_device(dev);
ret = platform_device_add_data(pdev, &rpres_data[i],
sizeof(struct rpres_platform_data));
if (ret) {
pr_err("Error pdev add for %s\n",
rpres_data[i].name);
continue;
}
od = to_omap_device(pdev);
od->pm_lats = ohl;
od->pm_lats_cnt = ohl_cnt;
} else {
od = omap_device_build("rpres", i, oh,
&rpres_data[i],
sizeof(struct rpres_platform_data),
ohl, ohl_cnt, false);
if (IS_ERR(od))
pr_err("Error building device for %s\n",
rpres_data[i].name);
}
}
return 0;
}
device_initcall(init);
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