u-boot/drivers/power/domain/meson-ee-pwrc.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2019 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include <common.h>
#include <dm.h>
#include <malloc.h>
#include <power-domain-uclass.h>
#include <regmap.h>
#include <syscon.h>
#include <reset.h>
#include <clk.h>
#include <dt-bindings/power/meson-g12a-power.h>
#include <dt-bindings/power/meson-sm1-power.h>
#include <linux/err.h>
/* AO Offsets */
#define AO_RTI_GEN_PWR_SLEEP0 (0x3a << 2)
#define AO_RTI_GEN_PWR_ISO0 (0x3b << 2)
/* HHI Offsets */
#define HHI_MEM_PD_REG0 (0x40 << 2)
#define HHI_VPU_MEM_PD_REG0 (0x41 << 2)
#define HHI_VPU_MEM_PD_REG1 (0x42 << 2)
#define HHI_VPU_MEM_PD_REG3 (0x43 << 2)
#define HHI_VPU_MEM_PD_REG4 (0x44 << 2)
#define HHI_AUDIO_MEM_PD_REG0 (0x45 << 2)
#define HHI_NANOQ_MEM_PD_REG0 (0x46 << 2)
#define HHI_NANOQ_MEM_PD_REG1 (0x47 << 2)
#define HHI_VPU_MEM_PD_REG2 (0x4d << 2)
struct meson_ee_pwrc;
struct meson_ee_pwrc_domain;
struct meson_ee_pwrc_mem_domain {
unsigned int reg;
unsigned int mask;
};
struct meson_ee_pwrc_top_domain {
unsigned int sleep_reg;
unsigned int sleep_mask;
unsigned int iso_reg;
unsigned int iso_mask;
};
struct meson_ee_pwrc_domain_desc {
char *name;
unsigned int reset_names_count;
unsigned int clk_names_count;
struct meson_ee_pwrc_top_domain *top_pd;
unsigned int mem_pd_count;
struct meson_ee_pwrc_mem_domain *mem_pd;
bool (*get_power)(struct power_domain *power_domain);
};
struct meson_ee_pwrc_domain_data {
unsigned int count;
struct meson_ee_pwrc_domain_desc *domains;
};
/* TOP Power Domains */
static struct meson_ee_pwrc_top_domain g12a_pwrc_vpu = {
.sleep_reg = AO_RTI_GEN_PWR_SLEEP0,
.sleep_mask = BIT(8),
.iso_reg = AO_RTI_GEN_PWR_SLEEP0,
.iso_mask = BIT(9),
};
#define SM1_EE_PD(__bit) \
{ \
.sleep_reg = AO_RTI_GEN_PWR_SLEEP0, \
.sleep_mask = BIT(__bit), \
.iso_reg = AO_RTI_GEN_PWR_ISO0, \
.iso_mask = BIT(__bit), \
}
static struct meson_ee_pwrc_top_domain sm1_pwrc_vpu = SM1_EE_PD(8);
static struct meson_ee_pwrc_top_domain sm1_pwrc_nna = SM1_EE_PD(16);
static struct meson_ee_pwrc_top_domain sm1_pwrc_usb = SM1_EE_PD(17);
static struct meson_ee_pwrc_top_domain sm1_pwrc_pci = SM1_EE_PD(18);
static struct meson_ee_pwrc_top_domain sm1_pwrc_ge2d = SM1_EE_PD(19);
/* Memory PD Domains */
#define VPU_MEMPD(__reg) \
{ __reg, GENMASK(1, 0) }, \
{ __reg, GENMASK(3, 2) }, \
{ __reg, GENMASK(5, 4) }, \
{ __reg, GENMASK(7, 6) }, \
{ __reg, GENMASK(9, 8) }, \
{ __reg, GENMASK(11, 10) }, \
{ __reg, GENMASK(13, 12) }, \
{ __reg, GENMASK(15, 14) }, \
{ __reg, GENMASK(17, 16) }, \
{ __reg, GENMASK(19, 18) }, \
{ __reg, GENMASK(21, 20) }, \
{ __reg, GENMASK(23, 22) }, \
{ __reg, GENMASK(25, 24) }, \
{ __reg, GENMASK(27, 26) }, \
{ __reg, GENMASK(29, 28) }, \
{ __reg, GENMASK(31, 30) }
#define VPU_HHI_MEMPD(__reg) \
{ __reg, BIT(8) }, \
{ __reg, BIT(9) }, \
{ __reg, BIT(10) }, \
{ __reg, BIT(11) }, \
{ __reg, BIT(12) }, \
{ __reg, BIT(13) }, \
{ __reg, BIT(14) }, \
{ __reg, BIT(15) }
static struct meson_ee_pwrc_mem_domain g12a_pwrc_mem_vpu[] = {
VPU_MEMPD(HHI_VPU_MEM_PD_REG0),
VPU_MEMPD(HHI_VPU_MEM_PD_REG1),
VPU_MEMPD(HHI_VPU_MEM_PD_REG2),
VPU_HHI_MEMPD(HHI_MEM_PD_REG0),
};
static struct meson_ee_pwrc_mem_domain g12a_pwrc_mem_eth[] = {
{ HHI_MEM_PD_REG0, GENMASK(3, 2) },
};
static struct meson_ee_pwrc_mem_domain sm1_pwrc_mem_vpu[] = {
VPU_MEMPD(HHI_VPU_MEM_PD_REG0),
VPU_MEMPD(HHI_VPU_MEM_PD_REG1),
VPU_MEMPD(HHI_VPU_MEM_PD_REG2),
VPU_MEMPD(HHI_VPU_MEM_PD_REG3),
{ HHI_VPU_MEM_PD_REG4, GENMASK(1, 0) },
{ HHI_VPU_MEM_PD_REG4, GENMASK(3, 2) },
{ HHI_VPU_MEM_PD_REG4, GENMASK(5, 4) },
{ HHI_VPU_MEM_PD_REG4, GENMASK(7, 6) },
VPU_HHI_MEMPD(HHI_MEM_PD_REG0),
};
static struct meson_ee_pwrc_mem_domain sm1_pwrc_mem_nna[] = {
{ HHI_NANOQ_MEM_PD_REG0, 0xff },
{ HHI_NANOQ_MEM_PD_REG1, 0xff },
};
static struct meson_ee_pwrc_mem_domain sm1_pwrc_mem_usb[] = {
{ HHI_MEM_PD_REG0, GENMASK(31, 30) },
};
static struct meson_ee_pwrc_mem_domain sm1_pwrc_mem_pcie[] = {
{ HHI_MEM_PD_REG0, GENMASK(29, 26) },
};
static struct meson_ee_pwrc_mem_domain sm1_pwrc_mem_ge2d[] = {
{ HHI_MEM_PD_REG0, GENMASK(25, 18) },
};
static struct meson_ee_pwrc_mem_domain sm1_pwrc_mem_audio[] = {
{ HHI_MEM_PD_REG0, GENMASK(5, 4) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(1, 0) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(3, 2) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(5, 4) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(7, 6) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(13, 12) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(15, 14) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(17, 16) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(19, 18) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(21, 20) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(23, 22) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(25, 24) },
{ HHI_AUDIO_MEM_PD_REG0, GENMASK(27, 26) },
};
#define VPU_PD(__name, __top_pd, __mem, __get_power, __resets, __clks) \
{ \
.name = __name, \
.reset_names_count = __resets, \
.clk_names_count = __clks, \
.top_pd = __top_pd, \
.mem_pd_count = ARRAY_SIZE(__mem), \
.mem_pd = __mem, \
.get_power = __get_power, \
}
#define TOP_PD(__name, __top_pd, __mem, __get_power) \
{ \
.name = __name, \
.top_pd = __top_pd, \
.mem_pd_count = ARRAY_SIZE(__mem), \
.mem_pd = __mem, \
.get_power = __get_power, \
}
#define MEM_PD(__name, __mem) \
TOP_PD(__name, NULL, __mem, NULL)
static bool pwrc_ee_get_power(struct power_domain *power_domain);
static struct meson_ee_pwrc_domain_desc g12a_pwrc_domains[] = {
[PWRC_G12A_VPU_ID] = VPU_PD("VPU", &g12a_pwrc_vpu, g12a_pwrc_mem_vpu,
pwrc_ee_get_power, 11, 2),
[PWRC_G12A_ETH_ID] = MEM_PD("ETH", g12a_pwrc_mem_eth),
};
static struct meson_ee_pwrc_domain_desc sm1_pwrc_domains[] = {
[PWRC_SM1_VPU_ID] = VPU_PD("VPU", &sm1_pwrc_vpu, sm1_pwrc_mem_vpu,
pwrc_ee_get_power, 11, 2),
[PWRC_SM1_NNA_ID] = TOP_PD("NNA", &sm1_pwrc_nna, sm1_pwrc_mem_nna,
pwrc_ee_get_power),
[PWRC_SM1_USB_ID] = TOP_PD("USB", &sm1_pwrc_usb, sm1_pwrc_mem_usb,
pwrc_ee_get_power),
[PWRC_SM1_PCIE_ID] = TOP_PD("PCI", &sm1_pwrc_pci, sm1_pwrc_mem_pcie,
pwrc_ee_get_power),
[PWRC_SM1_GE2D_ID] = TOP_PD("GE2D", &sm1_pwrc_ge2d, sm1_pwrc_mem_ge2d,
pwrc_ee_get_power),
[PWRC_SM1_AUDIO_ID] = MEM_PD("AUDIO", sm1_pwrc_mem_audio),
[PWRC_SM1_ETH_ID] = MEM_PD("ETH", g12a_pwrc_mem_eth),
};
struct meson_ee_pwrc_priv {
struct regmap *regmap_ao;
struct regmap *regmap_hhi;
struct reset_ctl_bulk resets;
struct clk_bulk clks;
const struct meson_ee_pwrc_domain_data *data;
};
static bool pwrc_ee_get_power(struct power_domain *power_domain)
{
struct meson_ee_pwrc_priv *priv = dev_get_priv(power_domain->dev);
struct meson_ee_pwrc_domain_desc *pwrc_domain;
u32 reg;
pwrc_domain = &priv->data->domains[power_domain->id];
regmap_read(priv->regmap_ao,
pwrc_domain->top_pd->sleep_reg, &reg);
return (reg & pwrc_domain->top_pd->sleep_mask);
}
static int meson_ee_pwrc_request(struct power_domain *power_domain)
{
return 0;
}
static int meson_ee_pwrc_free(struct power_domain *power_domain)
{
return 0;
}
static int meson_ee_pwrc_off(struct power_domain *power_domain)
{
struct meson_ee_pwrc_priv *priv = dev_get_priv(power_domain->dev);
struct meson_ee_pwrc_domain_desc *pwrc_domain;
int i;
pwrc_domain = &priv->data->domains[power_domain->id];
if (pwrc_domain->top_pd)
regmap_update_bits(priv->regmap_ao,
pwrc_domain->top_pd->sleep_reg,
pwrc_domain->top_pd->sleep_mask,
pwrc_domain->top_pd->sleep_mask);
udelay(20);
for (i = 0 ; i < pwrc_domain->mem_pd_count ; ++i)
regmap_update_bits(priv->regmap_hhi,
pwrc_domain->mem_pd[i].reg,
pwrc_domain->mem_pd[i].mask,
pwrc_domain->mem_pd[i].mask);
udelay(20);
if (pwrc_domain->top_pd)
regmap_update_bits(priv->regmap_ao,
pwrc_domain->top_pd->iso_reg,
pwrc_domain->top_pd->iso_mask,
pwrc_domain->top_pd->iso_mask);
if (pwrc_domain->clk_names_count) {
mdelay(20);
clk_disable_bulk(&priv->clks);
}
return 0;
}
static int meson_ee_pwrc_on(struct power_domain *power_domain)
{
struct meson_ee_pwrc_priv *priv = dev_get_priv(power_domain->dev);
struct meson_ee_pwrc_domain_desc *pwrc_domain;
int i, ret;
pwrc_domain = &priv->data->domains[power_domain->id];
if (pwrc_domain->top_pd)
regmap_update_bits(priv->regmap_ao,
pwrc_domain->top_pd->sleep_reg,
pwrc_domain->top_pd->sleep_mask, 0);
udelay(20);
for (i = 0 ; i < pwrc_domain->mem_pd_count ; ++i)
regmap_update_bits(priv->regmap_hhi,
pwrc_domain->mem_pd[i].reg,
pwrc_domain->mem_pd[i].mask, 0);
udelay(20);
if (pwrc_domain->reset_names_count) {
ret = reset_assert_bulk(&priv->resets);
if (ret)
return ret;
}
if (pwrc_domain->top_pd)
regmap_update_bits(priv->regmap_ao,
pwrc_domain->top_pd->iso_reg,
pwrc_domain->top_pd->iso_mask, 0);
if (pwrc_domain->reset_names_count) {
ret = reset_deassert_bulk(&priv->resets);
if (ret)
return ret;
}
if (pwrc_domain->clk_names_count)
return clk_enable_bulk(&priv->clks);
return 0;
}
static int meson_ee_pwrc_of_xlate(struct power_domain *power_domain,
struct ofnode_phandle_args *args)
{
struct meson_ee_pwrc_priv *priv = dev_get_priv(power_domain->dev);
/* #power-domain-cells is 1 */
if (args->args_count < 1) {
debug("Invalid args_count: %d\n", args->args_count);
return -EINVAL;
}
power_domain->id = args->args[0];
if (power_domain->id >= priv->data->count) {
debug("Invalid domain ID: %lu\n", power_domain->id);
return -EINVAL;
}
return 0;
}
struct power_domain_ops meson_ee_pwrc_ops = {
.rfree = meson_ee_pwrc_free,
.off = meson_ee_pwrc_off,
.on = meson_ee_pwrc_on,
.request = meson_ee_pwrc_request,
.of_xlate = meson_ee_pwrc_of_xlate,
};
static struct meson_ee_pwrc_domain_data meson_ee_g12a_pwrc_data = {
.count = ARRAY_SIZE(g12a_pwrc_domains),
.domains = g12a_pwrc_domains,
};
static struct meson_ee_pwrc_domain_data meson_ee_sm1_pwrc_data = {
.count = ARRAY_SIZE(sm1_pwrc_domains),
.domains = sm1_pwrc_domains,
};
static const struct udevice_id meson_ee_pwrc_ids[] = {
{
.compatible = "amlogic,meson-g12a-pwrc",
.data = (unsigned long)&meson_ee_g12a_pwrc_data,
},
{
.compatible = "amlogic,meson-sm1-pwrc",
.data = (unsigned long)&meson_ee_sm1_pwrc_data,
},
{ }
};
static int meson_ee_pwrc_probe(struct udevice *dev)
{
struct meson_ee_pwrc_priv *priv = dev_get_priv(dev);
u32 ao_phandle;
ofnode ao_node;
int ret;
priv->data = (void *)dev_get_driver_data(dev);
if (!priv->data)
return -EINVAL;
priv->regmap_hhi = syscon_node_to_regmap(dev_get_parent(dev)->node);
if (IS_ERR(priv->regmap_hhi))
return PTR_ERR(priv->regmap_hhi);
ret = ofnode_read_u32(dev->node, "amlogic,ao-sysctrl",
&ao_phandle);
if (ret)
return ret;
ao_node = ofnode_get_by_phandle(ao_phandle);
if (!ofnode_valid(ao_node))
return -EINVAL;
priv->regmap_ao = syscon_node_to_regmap(ao_node);
if (IS_ERR(priv->regmap_ao))
return PTR_ERR(priv->regmap_ao);
ret = reset_get_bulk(dev, &priv->resets);
if (ret)
return ret;
ret = clk_get_bulk(dev, &priv->clks);
if (ret)
return ret;
return 0;
}
U_BOOT_DRIVER(meson_ee_pwrc) = {
.name = "meson_ee_pwrc",
.id = UCLASS_POWER_DOMAIN,
.of_match = meson_ee_pwrc_ids,
.probe = meson_ee_pwrc_probe,
.ops = &meson_ee_pwrc_ops,
.priv_auto_alloc_size = sizeof(struct meson_ee_pwrc_priv),
};