mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 18:41:23 +00:00
da8c37e13d
Add power domains for Actions Semi S900 SoC. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> [AF: Update Kconfig help text] Signed-off-by: Andreas Färber <afaerber@suse.de>
321 lines
6.4 KiB
C
321 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Actions Semi Owl Smart Power System (SPS)
|
|
*
|
|
* Copyright 2012 Actions Semi Inc.
|
|
* Author: Actions Semi, Inc.
|
|
*
|
|
* Copyright (c) 2017 Andreas Färber
|
|
*/
|
|
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/pm_domain.h>
|
|
#include <linux/soc/actions/owl-sps.h>
|
|
#include <dt-bindings/power/owl-s500-powergate.h>
|
|
#include <dt-bindings/power/owl-s700-powergate.h>
|
|
#include <dt-bindings/power/owl-s900-powergate.h>
|
|
|
|
struct owl_sps_domain_info {
|
|
const char *name;
|
|
int pwr_bit;
|
|
int ack_bit;
|
|
unsigned int genpd_flags;
|
|
};
|
|
|
|
struct owl_sps_info {
|
|
unsigned num_domains;
|
|
const struct owl_sps_domain_info *domains;
|
|
};
|
|
|
|
struct owl_sps {
|
|
struct device *dev;
|
|
const struct owl_sps_info *info;
|
|
void __iomem *base;
|
|
struct genpd_onecell_data genpd_data;
|
|
struct generic_pm_domain *domains[];
|
|
};
|
|
|
|
#define to_owl_pd(gpd) container_of(gpd, struct owl_sps_domain, genpd)
|
|
|
|
struct owl_sps_domain {
|
|
struct generic_pm_domain genpd;
|
|
const struct owl_sps_domain_info *info;
|
|
struct owl_sps *sps;
|
|
};
|
|
|
|
static int owl_sps_set_power(struct owl_sps_domain *pd, bool enable)
|
|
{
|
|
u32 pwr_mask, ack_mask;
|
|
|
|
ack_mask = BIT(pd->info->ack_bit);
|
|
pwr_mask = BIT(pd->info->pwr_bit);
|
|
|
|
return owl_sps_set_pg(pd->sps->base, pwr_mask, ack_mask, enable);
|
|
}
|
|
|
|
static int owl_sps_power_on(struct generic_pm_domain *domain)
|
|
{
|
|
struct owl_sps_domain *pd = to_owl_pd(domain);
|
|
|
|
dev_dbg(pd->sps->dev, "%s power on", pd->info->name);
|
|
|
|
return owl_sps_set_power(pd, true);
|
|
}
|
|
|
|
static int owl_sps_power_off(struct generic_pm_domain *domain)
|
|
{
|
|
struct owl_sps_domain *pd = to_owl_pd(domain);
|
|
|
|
dev_dbg(pd->sps->dev, "%s power off", pd->info->name);
|
|
|
|
return owl_sps_set_power(pd, false);
|
|
}
|
|
|
|
static int owl_sps_init_domain(struct owl_sps *sps, int index)
|
|
{
|
|
struct owl_sps_domain *pd;
|
|
|
|
pd = devm_kzalloc(sps->dev, sizeof(*pd), GFP_KERNEL);
|
|
if (!pd)
|
|
return -ENOMEM;
|
|
|
|
pd->info = &sps->info->domains[index];
|
|
pd->sps = sps;
|
|
|
|
pd->genpd.name = pd->info->name;
|
|
pd->genpd.power_on = owl_sps_power_on;
|
|
pd->genpd.power_off = owl_sps_power_off;
|
|
pd->genpd.flags = pd->info->genpd_flags;
|
|
pm_genpd_init(&pd->genpd, NULL, false);
|
|
|
|
sps->genpd_data.domains[index] = &pd->genpd;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int owl_sps_probe(struct platform_device *pdev)
|
|
{
|
|
const struct of_device_id *match;
|
|
const struct owl_sps_info *sps_info;
|
|
struct owl_sps *sps;
|
|
int i, ret;
|
|
|
|
if (!pdev->dev.of_node) {
|
|
dev_err(&pdev->dev, "no device node\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
match = of_match_device(pdev->dev.driver->of_match_table, &pdev->dev);
|
|
if (!match || !match->data) {
|
|
dev_err(&pdev->dev, "unknown compatible or missing data\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
sps_info = match->data;
|
|
|
|
sps = devm_kzalloc(&pdev->dev,
|
|
struct_size(sps, domains, sps_info->num_domains),
|
|
GFP_KERNEL);
|
|
if (!sps)
|
|
return -ENOMEM;
|
|
|
|
sps->base = of_io_request_and_map(pdev->dev.of_node, 0, "owl-sps");
|
|
if (IS_ERR(sps->base)) {
|
|
dev_err(&pdev->dev, "failed to map sps registers\n");
|
|
return PTR_ERR(sps->base);
|
|
}
|
|
|
|
sps->dev = &pdev->dev;
|
|
sps->info = sps_info;
|
|
sps->genpd_data.domains = sps->domains;
|
|
sps->genpd_data.num_domains = sps_info->num_domains;
|
|
|
|
for (i = 0; i < sps_info->num_domains; i++) {
|
|
ret = owl_sps_init_domain(sps, i);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = of_genpd_add_provider_onecell(pdev->dev.of_node, &sps->genpd_data);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to add provider (%d)", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct owl_sps_domain_info s500_sps_domains[] = {
|
|
[S500_PD_VDE] = {
|
|
.name = "VDE",
|
|
.pwr_bit = 0,
|
|
.ack_bit = 16,
|
|
},
|
|
[S500_PD_VCE_SI] = {
|
|
.name = "VCE_SI",
|
|
.pwr_bit = 1,
|
|
.ack_bit = 17,
|
|
},
|
|
[S500_PD_USB2_1] = {
|
|
.name = "USB2_1",
|
|
.pwr_bit = 2,
|
|
.ack_bit = 18,
|
|
},
|
|
[S500_PD_CPU2] = {
|
|
.name = "CPU2",
|
|
.pwr_bit = 5,
|
|
.ack_bit = 21,
|
|
.genpd_flags = GENPD_FLAG_ALWAYS_ON,
|
|
},
|
|
[S500_PD_CPU3] = {
|
|
.name = "CPU3",
|
|
.pwr_bit = 6,
|
|
.ack_bit = 22,
|
|
.genpd_flags = GENPD_FLAG_ALWAYS_ON,
|
|
},
|
|
[S500_PD_DMA] = {
|
|
.name = "DMA",
|
|
.pwr_bit = 8,
|
|
.ack_bit = 12,
|
|
},
|
|
[S500_PD_DS] = {
|
|
.name = "DS",
|
|
.pwr_bit = 9,
|
|
.ack_bit = 13,
|
|
},
|
|
[S500_PD_USB3] = {
|
|
.name = "USB3",
|
|
.pwr_bit = 10,
|
|
.ack_bit = 14,
|
|
},
|
|
[S500_PD_USB2_0] = {
|
|
.name = "USB2_0",
|
|
.pwr_bit = 11,
|
|
.ack_bit = 15,
|
|
},
|
|
};
|
|
|
|
static const struct owl_sps_info s500_sps_info = {
|
|
.num_domains = ARRAY_SIZE(s500_sps_domains),
|
|
.domains = s500_sps_domains,
|
|
};
|
|
|
|
static const struct owl_sps_domain_info s700_sps_domains[] = {
|
|
[S700_PD_VDE] = {
|
|
.name = "VDE",
|
|
.pwr_bit = 0,
|
|
},
|
|
[S700_PD_VCE_SI] = {
|
|
.name = "VCE_SI",
|
|
.pwr_bit = 1,
|
|
},
|
|
[S700_PD_USB2_1] = {
|
|
.name = "USB2_1",
|
|
.pwr_bit = 2,
|
|
},
|
|
[S700_PD_HDE] = {
|
|
.name = "HDE",
|
|
.pwr_bit = 7,
|
|
},
|
|
[S700_PD_DMA] = {
|
|
.name = "DMA",
|
|
.pwr_bit = 8,
|
|
},
|
|
[S700_PD_DS] = {
|
|
.name = "DS",
|
|
.pwr_bit = 9,
|
|
},
|
|
[S700_PD_USB3] = {
|
|
.name = "USB3",
|
|
.pwr_bit = 10,
|
|
},
|
|
[S700_PD_USB2_0] = {
|
|
.name = "USB2_0",
|
|
.pwr_bit = 11,
|
|
},
|
|
};
|
|
|
|
static const struct owl_sps_info s700_sps_info = {
|
|
.num_domains = ARRAY_SIZE(s700_sps_domains),
|
|
.domains = s700_sps_domains,
|
|
};
|
|
|
|
static const struct owl_sps_domain_info s900_sps_domains[] = {
|
|
[S900_PD_GPU_B] = {
|
|
.name = "GPU_B",
|
|
.pwr_bit = 3,
|
|
},
|
|
[S900_PD_VCE] = {
|
|
.name = "VCE",
|
|
.pwr_bit = 4,
|
|
},
|
|
[S900_PD_SENSOR] = {
|
|
.name = "SENSOR",
|
|
.pwr_bit = 5,
|
|
},
|
|
[S900_PD_VDE] = {
|
|
.name = "VDE",
|
|
.pwr_bit = 6,
|
|
},
|
|
[S900_PD_HDE] = {
|
|
.name = "HDE",
|
|
.pwr_bit = 7,
|
|
},
|
|
[S900_PD_USB3] = {
|
|
.name = "USB3",
|
|
.pwr_bit = 8,
|
|
},
|
|
[S900_PD_DDR0] = {
|
|
.name = "DDR0",
|
|
.pwr_bit = 9,
|
|
},
|
|
[S900_PD_DDR1] = {
|
|
.name = "DDR1",
|
|
.pwr_bit = 10,
|
|
},
|
|
[S900_PD_DE] = {
|
|
.name = "DE",
|
|
.pwr_bit = 13,
|
|
},
|
|
[S900_PD_NAND] = {
|
|
.name = "NAND",
|
|
.pwr_bit = 14,
|
|
},
|
|
[S900_PD_USB2_H0] = {
|
|
.name = "USB2_H0",
|
|
.pwr_bit = 15,
|
|
},
|
|
[S900_PD_USB2_H1] = {
|
|
.name = "USB2_H1",
|
|
.pwr_bit = 16,
|
|
},
|
|
};
|
|
|
|
static const struct owl_sps_info s900_sps_info = {
|
|
.num_domains = ARRAY_SIZE(s900_sps_domains),
|
|
.domains = s900_sps_domains,
|
|
};
|
|
|
|
static const struct of_device_id owl_sps_of_matches[] = {
|
|
{ .compatible = "actions,s500-sps", .data = &s500_sps_info },
|
|
{ .compatible = "actions,s700-sps", .data = &s700_sps_info },
|
|
{ .compatible = "actions,s900-sps", .data = &s900_sps_info },
|
|
{ }
|
|
};
|
|
|
|
static struct platform_driver owl_sps_platform_driver = {
|
|
.probe = owl_sps_probe,
|
|
.driver = {
|
|
.name = "owl-sps",
|
|
.of_match_table = owl_sps_of_matches,
|
|
.suppress_bind_attrs = true,
|
|
},
|
|
};
|
|
|
|
static int __init owl_sps_init(void)
|
|
{
|
|
return platform_driver_register(&owl_sps_platform_driver);
|
|
}
|
|
postcore_initcall(owl_sps_init);
|