static void mtk_register_power_domains(struct platform_device *pdev,
struct scp *scp, int num)
{
struct genpd_onecell_data *pd_data;
int i, ret;
for (i = 0; i < num; i++) {
struct scp_domain *scpd = &scp->domains[i];
struct generic_pm_domain *genpd = &scpd->genpd;
/*
* Initially turn on all domains to make the domains usable
* with !CONFIG_PM and to get the hardware in sync with the
* software. The unused domains will be switched off during
* late_init time.
*/
genpd->power_on(genpd);
pm_genpd_init(genpd, NULL, false);
}
/*
* We are not allowed to fail here since there is no way to unregister
* a power domain. Once registered above we have to keep the domains
* valid.
*/
pd_data = &scp->pd_data;
ret = of_genpd_add_provider_onecell(pdev->dev.of_node, pd_data);
if (ret)
dev_err(&pdev->dev, "Failed to add OF provider: %d\n", ret);
}
int gdsc_register(struct device *dev, struct gdsc **scs, size_t num,
struct reset_controller_dev *rcdev, struct regmap *regmap)
{
int i, ret;
struct genpd_onecell_data *data;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->domains = devm_kcalloc(dev, num, sizeof(*data->domains),
GFP_KERNEL);
if (!data->domains)
return -ENOMEM;
data->num_domains = num;
for (i = 0; i < num; i++) {
if (!scs[i])
continue;
scs[i]->regmap = regmap;
scs[i]->rcdev = rcdev;
ret = gdsc_init(scs[i]);
if (ret)
return ret;
data->domains[i] = &scs[i]->pd;
}
return of_genpd_add_provider_onecell(dev->of_node, data);
}
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, sizeof(*sps) +
sps_info->num_domains * sizeof(sps->domains[0]),
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;
}
int __init ux500_pm_domains_init(void)
{
struct device_node *np;
struct genpd_onecell_data *genpd_data;
int i;
np = of_find_matching_node(NULL, ux500_pm_domain_matches);
if (!np)
return -ENODEV;
genpd_data = kzalloc(sizeof(*genpd_data), GFP_KERNEL);
if (!genpd_data)
return -ENOMEM;
genpd_data->domains = ux500_pm_domains;
genpd_data->num_domains = ARRAY_SIZE(ux500_pm_domains);
for (i = 0; i < ARRAY_SIZE(ux500_pm_domains); ++i)
pm_genpd_init(ux500_pm_domains[i], NULL, NULL, 0, false);
of_genpd_add_provider_onecell(np, genpd_data);
return 0;
}
static int rpi_power_probe(struct platform_device *pdev)
{
struct device_node *fw_np;
struct device *dev = &pdev->dev;
struct rpi_power_domains *rpi_domains;
rpi_domains = devm_kzalloc(dev, sizeof(*rpi_domains), GFP_KERNEL);
if (!rpi_domains)
return -ENOMEM;
rpi_domains->xlate.domains =
devm_kcalloc(dev,
RPI_POWER_DOMAIN_COUNT,
sizeof(*rpi_domains->xlate.domains),
GFP_KERNEL);
if (!rpi_domains->xlate.domains)
return -ENOMEM;
rpi_domains->xlate.num_domains = RPI_POWER_DOMAIN_COUNT;
fw_np = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
if (!fw_np) {
dev_err(&pdev->dev, "no firmware node\n");
return -ENODEV;
}
rpi_domains->fw = rpi_firmware_get(fw_np);
of_node_put(fw_np);
if (!rpi_domains->fw)
return -EPROBE_DEFER;
rpi_domains->has_new_interface =
rpi_has_new_domain_support(rpi_domains);
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C0, "I2C0");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C1, "I2C1");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C2, "I2C2");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VIDEO_SCALER,
"VIDEO_SCALER");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VPU1, "VPU1");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_HDMI, "HDMI");
/*
* Use the old firmware interface for USB power, so that we
* can turn it on even if the firmware hasn't been updated.
*/
rpi_init_old_power_domain(rpi_domains, RPI_POWER_DOMAIN_USB,
RPI_OLD_POWER_DOMAIN_USB, "USB");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VEC, "VEC");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_JPEG, "JPEG");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_H264, "H264");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_V3D, "V3D");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_ISP, "ISP");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_UNICAM0, "UNICAM0");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_UNICAM1, "UNICAM1");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CCP2RX, "CCP2RX");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CSI2, "CSI2");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CPI, "CPI");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_DSI0, "DSI0");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_DSI1, "DSI1");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_TRANSPOSER,
"TRANSPOSER");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CCP2TX, "CCP2TX");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CDP, "CDP");
rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_ARM, "ARM");
of_genpd_add_provider_onecell(dev->of_node, &rpi_domains->xlate);
platform_set_drvdata(pdev, rpi_domains);
return 0;
}
static int scpi_pm_domain_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct scpi_pm_domain *scpi_pd;
struct genpd_onecell_data *scpi_pd_data;
struct generic_pm_domain **domains;
struct scpi_ops *scpi_ops;
int ret, num_domains, i;
scpi_ops = get_scpi_ops();
if (!scpi_ops)
return -EPROBE_DEFER;
if (!np) {
dev_err(dev, "device tree node not found\n");
return -ENODEV;
}
if (!scpi_ops->device_set_power_state ||
!scpi_ops->device_get_power_state) {
dev_err(dev, "power domains not supported in the firmware\n");
return -ENODEV;
}
ret = of_property_read_u32(np, "num-domains", &num_domains);
if (ret) {
dev_err(dev, "number of domains not found\n");
return -EINVAL;
}
scpi_pd = devm_kcalloc(dev, num_domains, sizeof(*scpi_pd), GFP_KERNEL);
if (!scpi_pd)
return -ENOMEM;
scpi_pd_data = devm_kzalloc(dev, sizeof(*scpi_pd_data), GFP_KERNEL);
if (!scpi_pd_data)
return -ENOMEM;
domains = devm_kcalloc(dev, num_domains, sizeof(*domains), GFP_KERNEL);
if (!domains)
return -ENOMEM;
for (i = 0; i < num_domains; i++, scpi_pd++) {
domains[i] = &scpi_pd->genpd;
scpi_pd->domain = i;
scpi_pd->ops = scpi_ops;
sprintf(scpi_pd->name, "%pOFn.%d", np, i);
scpi_pd->genpd.name = scpi_pd->name;
scpi_pd->genpd.power_off = scpi_pd_power_off;
scpi_pd->genpd.power_on = scpi_pd_power_on;
/*
* Treat all power domains as off at boot.
*
* The SCP firmware itself may have switched on some domains,
* but for reference counting purpose, keep it this way.
*/
pm_genpd_init(&scpi_pd->genpd, NULL, true);
}
scpi_pd_data->domains = domains;
scpi_pd_data->num_domains = num_domains;
of_genpd_add_provider_onecell(np, scpi_pd_data);
return 0;
}