[U-Boot] [PATCH 1/2] power: domain: add Amlogic Everything-Else power domain driver
Neil Armstrong
narmstrong at baylibre.com
Fri Oct 11 13:12:19 UTC 2019
Based on the 54ecb8f7028c ("Linux 5.4-rc1") Everything-Else power domain
driver for Amlogic SoCs.
This driver handles the VPU Power domain and other domains from the
Everything-Else part of the SM1 and G12A SoCs.
Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
---
drivers/power/domain/Kconfig | 7 +
drivers/power/domain/Makefile | 1 +
drivers/power/domain/meson-ee-pwrc.c | 430 +++++++++++++++++++++++++++
3 files changed, 438 insertions(+)
create mode 100644 drivers/power/domain/meson-ee-pwrc.c
diff --git a/drivers/power/domain/Kconfig b/drivers/power/domain/Kconfig
index 06bba6220b..f5e428b3f5 100644
--- a/drivers/power/domain/Kconfig
+++ b/drivers/power/domain/Kconfig
@@ -37,6 +37,13 @@ config MESON_GX_VPU_POWER_DOMAIN
Enable support for manipulating Amlogic Meson GX Video Processing
Unit power domain.
+config MESON_EE_POWER_DOMAIN
+ bool "Enable Amlogic Everything-Else power domain driver"
+ depends on POWER_DOMAIN && ARCH_MESON
+ help
+ Enable support for manipulating Amlogic Meson Everything-Else power
+ domains.
+
config SANDBOX_POWER_DOMAIN
bool "Enable the sandbox power domain test driver"
depends on POWER_DOMAIN && SANDBOX
diff --git a/drivers/power/domain/Makefile b/drivers/power/domain/Makefile
index 695aafe17d..91e4ca9d29 100644
--- a/drivers/power/domain/Makefile
+++ b/drivers/power/domain/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_BCM6328_POWER_DOMAIN) += bcm6328-power-domain.o
obj-$(CONFIG_IMX8_POWER_DOMAIN) += imx8-power-domain.o
obj-$(CONFIG_MTK_POWER_DOMAIN) += mtk-power-domain.o
obj-$(CONFIG_MESON_GX_VPU_POWER_DOMAIN) += meson-gx-pwrc-vpu.o
+obj-$(CONFIG_MESON_EE_POWER_DOMAIN) += meson-ee-pwrc.o
obj-$(CONFIG_SANDBOX_POWER_DOMAIN) += sandbox-power-domain.o
obj-$(CONFIG_SANDBOX_POWER_DOMAIN) += sandbox-power-domain-test.o
obj-$(CONFIG_TEGRA186_POWER_DOMAIN) += tegra186-power-domain.o
diff --git a/drivers/power/domain/meson-ee-pwrc.c b/drivers/power/domain/meson-ee-pwrc.c
new file mode 100644
index 0000000000..21d4c9d4dd
--- /dev/null
+++ b/drivers/power/domain/meson-ee-pwrc.c
@@ -0,0 +1,430 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2019 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong at baylibre.com>
+ */
+
+#include <common.h>
+#include <dm.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>
+
+/* 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, ®);
+
+ 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 = {
+ .free = 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),
+};
--
2.22.0
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