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-rw-r--r--drivers/soc/samsung/exynos-asv.c1
-rw-r--r--drivers/soc/samsung/exynos-chipid.c5
-rw-r--r--drivers/soc/samsung/exynos-pmu.c79
-rw-r--r--drivers/soc/samsung/exynos-pmu.h1
-rw-r--r--drivers/soc/samsung/exynos-usi.c108
-rw-r--r--drivers/soc/samsung/exynos3250-pmu.c1
-rw-r--r--drivers/soc/samsung/exynos5250-pmu.c1
-rw-r--r--drivers/soc/samsung/exynos5420-pmu.c1
8 files changed, 177 insertions, 20 deletions
diff --git a/drivers/soc/samsung/exynos-asv.c b/drivers/soc/samsung/exynos-asv.c
index 97006cc3b946..8e681f519526 100644
--- a/drivers/soc/samsung/exynos-asv.c
+++ b/drivers/soc/samsung/exynos-asv.c
@@ -9,6 +9,7 @@
* Samsung Exynos SoC Adaptive Supply Voltage support
*/
+#include <linux/array_size.h>
#include <linux/cpu.h>
#include <linux/device.h>
#include <linux/energy_model.h>
diff --git a/drivers/soc/samsung/exynos-chipid.c b/drivers/soc/samsung/exynos-chipid.c
index e37dde1fb588..c86f1058ceed 100644
--- a/drivers/soc/samsung/exynos-chipid.c
+++ b/drivers/soc/samsung/exynos-chipid.c
@@ -12,6 +12,7 @@
* Samsung Exynos SoC Adaptive Supply Voltage and Chip ID support
*/
+#include <linux/array_size.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/mfd/syscon.h>
@@ -55,7 +56,9 @@ static const struct exynos_soc_id {
{ "EXYNOS5440", 0xE5440000 },
{ "EXYNOS5800", 0xE5422000 },
{ "EXYNOS7420", 0xE7420000 },
+ { "EXYNOS7870", 0xE7870000 },
/* Compatible with: samsung,exynos850-chipid */
+ { "EXYNOS2200", 0xE9925000 },
{ "EXYNOS7885", 0xE7885000 },
{ "EXYNOS850", 0xE3830000 },
{ "EXYNOS8895", 0xE8895000 },
@@ -134,6 +137,8 @@ static int exynos_chipid_probe(struct platform_device *pdev)
soc_dev_attr->revision = devm_kasprintf(&pdev->dev, GFP_KERNEL,
"%x", soc_info.revision);
+ if (!soc_dev_attr->revision)
+ return -ENOMEM;
soc_dev_attr->soc_id = product_id_to_soc_id(soc_info.product_id);
if (!soc_dev_attr->soc_id) {
pr_err("Unknown SoC\n");
diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c
index dd5256e5aae1..a77288f49d24 100644
--- a/drivers/soc/samsung/exynos-pmu.c
+++ b/drivers/soc/samsung/exynos-pmu.c
@@ -5,7 +5,9 @@
//
// Exynos - CPU PMU(Power Management Unit) support
+#include <linux/array_size.h>
#include <linux/arm-smccc.h>
+#include <linux/cpuhotplug.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/mfd/core.h>
@@ -32,6 +34,7 @@ struct exynos_pmu_context {
struct device *dev;
const struct exynos_pmu_data *pmu_data;
struct regmap *pmureg;
+ struct regmap *pmuintrgen;
};
void __iomem *pmu_base_addr;
@@ -221,7 +224,8 @@ static const struct regmap_config regmap_smccfg = {
};
static const struct exynos_pmu_data gs101_pmu_data = {
- .pmu_secure = true
+ .pmu_secure = true,
+ .pmu_cpuhp = true,
};
/*
@@ -325,6 +329,59 @@ struct regmap *exynos_get_pmu_regmap_by_phandle(struct device_node *np,
}
EXPORT_SYMBOL_GPL(exynos_get_pmu_regmap_by_phandle);
+/*
+ * CPU_INFORM register hint values which are used by
+ * EL3 firmware (el3mon).
+ */
+#define CPU_INFORM_CLEAR 0
+#define CPU_INFORM_C2 1
+
+static int gs101_cpuhp_pmu_online(unsigned int cpu)
+{
+ unsigned int cpuhint = smp_processor_id();
+ u32 reg, mask;
+
+ /* clear cpu inform hint */
+ regmap_write(pmu_context->pmureg, GS101_CPU_INFORM(cpuhint),
+ CPU_INFORM_CLEAR);
+
+ mask = BIT(cpu);
+
+ regmap_update_bits(pmu_context->pmuintrgen, GS101_GRP2_INTR_BID_ENABLE,
+ mask, (0 << cpu));
+
+ regmap_read(pmu_context->pmuintrgen, GS101_GRP2_INTR_BID_UPEND, &reg);
+
+ regmap_write(pmu_context->pmuintrgen, GS101_GRP2_INTR_BID_CLEAR,
+ reg & mask);
+
+ return 0;
+}
+
+static int gs101_cpuhp_pmu_offline(unsigned int cpu)
+{
+ u32 reg, mask;
+ unsigned int cpuhint = smp_processor_id();
+
+ /* set cpu inform hint */
+ regmap_write(pmu_context->pmureg, GS101_CPU_INFORM(cpuhint),
+ CPU_INFORM_C2);
+
+ mask = BIT(cpu);
+ regmap_update_bits(pmu_context->pmuintrgen, GS101_GRP2_INTR_BID_ENABLE,
+ mask, BIT(cpu));
+
+ regmap_read(pmu_context->pmuintrgen, GS101_GRP1_INTR_BID_UPEND, &reg);
+ regmap_write(pmu_context->pmuintrgen, GS101_GRP1_INTR_BID_CLEAR,
+ reg & mask);
+
+ mask = (BIT(cpu + 8));
+ regmap_read(pmu_context->pmuintrgen, GS101_GRP1_INTR_BID_UPEND, &reg);
+ regmap_write(pmu_context->pmuintrgen, GS101_GRP1_INTR_BID_CLEAR,
+ reg & mask);
+ return 0;
+}
+
static int exynos_pmu_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -377,6 +434,26 @@ static int exynos_pmu_probe(struct platform_device *pdev)
pmu_context->pmureg = regmap;
pmu_context->dev = dev;
+ if (pmu_context->pmu_data && pmu_context->pmu_data->pmu_cpuhp) {
+ pmu_context->pmuintrgen = syscon_regmap_lookup_by_phandle(dev->of_node,
+ "google,pmu-intr-gen-syscon");
+ if (IS_ERR(pmu_context->pmuintrgen)) {
+ /*
+ * To maintain support for older DTs that didn't specify syscon phandle
+ * just issue a warning rather than fail to probe.
+ */
+ dev_warn(&pdev->dev, "pmu-intr-gen syscon unavailable\n");
+ } else {
+ cpuhp_setup_state(CPUHP_BP_PREPARE_DYN,
+ "soc/exynos-pmu:prepare",
+ gs101_cpuhp_pmu_online, NULL);
+
+ cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
+ "soc/exynos-pmu:online",
+ NULL, gs101_cpuhp_pmu_offline);
+ }
+ }
+
if (pmu_context->pmu_data && pmu_context->pmu_data->pmu_init)
pmu_context->pmu_data->pmu_init();
diff --git a/drivers/soc/samsung/exynos-pmu.h b/drivers/soc/samsung/exynos-pmu.h
index 0a49a2c9a08e..0938bb4fe15f 100644
--- a/drivers/soc/samsung/exynos-pmu.h
+++ b/drivers/soc/samsung/exynos-pmu.h
@@ -22,6 +22,7 @@ struct exynos_pmu_data {
const struct exynos_pmu_conf *pmu_config;
const struct exynos_pmu_conf *pmu_config_extra;
bool pmu_secure;
+ bool pmu_cpuhp;
void (*pmu_init)(void);
void (*powerdown_conf)(enum sys_powerdown);
diff --git a/drivers/soc/samsung/exynos-usi.c b/drivers/soc/samsung/exynos-usi.c
index 114352695ac2..5f7bdf3bab05 100644
--- a/drivers/soc/samsung/exynos-usi.c
+++ b/drivers/soc/samsung/exynos-usi.c
@@ -6,6 +6,7 @@
* Samsung Exynos USI driver (Universal Serial Interface).
*/
+#include <linux/array_size.h>
#include <linux/clk.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
@@ -16,6 +17,18 @@
#include <dt-bindings/soc/samsung,exynos-usi.h>
+/* USIv1: System Register: SW_CONF register bits */
+#define USI_V1_SW_CONF_NONE 0x0
+#define USI_V1_SW_CONF_I2C0 0x1
+#define USI_V1_SW_CONF_I2C1 0x2
+#define USI_V1_SW_CONF_I2C0_1 0x3
+#define USI_V1_SW_CONF_SPI 0x4
+#define USI_V1_SW_CONF_UART 0x8
+#define USI_V1_SW_CONF_UART_I2C1 0xa
+#define USI_V1_SW_CONF_MASK (USI_V1_SW_CONF_I2C0 | USI_V1_SW_CONF_I2C1 | \
+ USI_V1_SW_CONF_I2C0_1 | USI_V1_SW_CONF_SPI | \
+ USI_V1_SW_CONF_UART | USI_V1_SW_CONF_UART_I2C1)
+
/* USIv2: System Register: SW_CONF register bits */
#define USI_V2_SW_CONF_NONE 0x0
#define USI_V2_SW_CONF_UART BIT(0)
@@ -34,7 +47,8 @@
#define USI_OPTION_CLKSTOP_ON BIT(2)
enum exynos_usi_ver {
- USI_VER2 = 2,
+ USI_VER1 = 0,
+ USI_VER2,
};
struct exynos_usi_variant {
@@ -66,19 +80,39 @@ struct exynos_usi_mode {
unsigned int val; /* mode register value */
};
-static const struct exynos_usi_mode exynos_usi_modes[] = {
- [USI_V2_NONE] = { .name = "none", .val = USI_V2_SW_CONF_NONE },
- [USI_V2_UART] = { .name = "uart", .val = USI_V2_SW_CONF_UART },
- [USI_V2_SPI] = { .name = "spi", .val = USI_V2_SW_CONF_SPI },
- [USI_V2_I2C] = { .name = "i2c", .val = USI_V2_SW_CONF_I2C },
+#define USI_MODES_MAX (USI_MODE_UART_I2C1 + 1)
+static const struct exynos_usi_mode exynos_usi_modes[][USI_MODES_MAX] = {
+ [USI_VER1] = {
+ [USI_MODE_NONE] = { .name = "none", .val = USI_V1_SW_CONF_NONE },
+ [USI_MODE_UART] = { .name = "uart", .val = USI_V1_SW_CONF_UART },
+ [USI_MODE_SPI] = { .name = "spi", .val = USI_V1_SW_CONF_SPI },
+ [USI_MODE_I2C] = { .name = "i2c", .val = USI_V1_SW_CONF_I2C0 },
+ [USI_MODE_I2C1] = { .name = "i2c1", .val = USI_V1_SW_CONF_I2C1 },
+ [USI_MODE_I2C0_1] = { .name = "i2c0_1", .val = USI_V1_SW_CONF_I2C0_1 },
+ [USI_MODE_UART_I2C1] = { .name = "uart_i2c1", .val = USI_V1_SW_CONF_UART_I2C1 },
+ }, [USI_VER2] = {
+ [USI_MODE_NONE] = { .name = "none", .val = USI_V2_SW_CONF_NONE },
+ [USI_MODE_UART] = { .name = "uart", .val = USI_V2_SW_CONF_UART },
+ [USI_MODE_SPI] = { .name = "spi", .val = USI_V2_SW_CONF_SPI },
+ [USI_MODE_I2C] = { .name = "i2c", .val = USI_V2_SW_CONF_I2C },
+ },
};
static const char * const exynos850_usi_clk_names[] = { "pclk", "ipclk" };
static const struct exynos_usi_variant exynos850_usi_data = {
.ver = USI_VER2,
.sw_conf_mask = USI_V2_SW_CONF_MASK,
- .min_mode = USI_V2_NONE,
- .max_mode = USI_V2_I2C,
+ .min_mode = USI_MODE_NONE,
+ .max_mode = USI_MODE_I2C,
+ .num_clks = ARRAY_SIZE(exynos850_usi_clk_names),
+ .clk_names = exynos850_usi_clk_names,
+};
+
+static const struct exynos_usi_variant exynos8895_usi_data = {
+ .ver = USI_VER1,
+ .sw_conf_mask = USI_V1_SW_CONF_MASK,
+ .min_mode = USI_MODE_NONE,
+ .max_mode = USI_MODE_UART_I2C1,
.num_clks = ARRAY_SIZE(exynos850_usi_clk_names),
.clk_names = exynos850_usi_clk_names,
};
@@ -87,6 +121,9 @@ static const struct of_device_id exynos_usi_dt_match[] = {
{
.compatible = "samsung,exynos850-usi",
.data = &exynos850_usi_data,
+ }, {
+ .compatible = "samsung,exynos8895-usi",
+ .data = &exynos8895_usi_data,
},
{ } /* sentinel */
};
@@ -109,14 +146,15 @@ static int exynos_usi_set_sw_conf(struct exynos_usi *usi, size_t mode)
if (mode < usi->data->min_mode || mode > usi->data->max_mode)
return -EINVAL;
- val = exynos_usi_modes[mode].val;
+ val = exynos_usi_modes[usi->data->ver][mode].val;
ret = regmap_update_bits(usi->sysreg, usi->sw_conf,
usi->data->sw_conf_mask, val);
if (ret)
return ret;
usi->mode = mode;
- dev_dbg(usi->dev, "protocol: %s\n", exynos_usi_modes[usi->mode].name);
+ dev_dbg(usi->dev, "protocol: %s\n",
+ exynos_usi_modes[usi->data->ver][usi->mode].name);
return 0;
}
@@ -168,10 +206,42 @@ static int exynos_usi_configure(struct exynos_usi *usi)
if (ret)
return ret;
- if (usi->data->ver == USI_VER2)
- return exynos_usi_enable(usi);
+ if (usi->data->ver == USI_VER1)
+ ret = clk_bulk_prepare_enable(usi->data->num_clks,
+ usi->clks);
+ else if (usi->data->ver == USI_VER2)
+ ret = exynos_usi_enable(usi);
- return 0;
+ return ret;
+}
+
+static void exynos_usi_unconfigure(void *data)
+{
+ struct exynos_usi *usi = data;
+ u32 val;
+ int ret;
+
+ if (usi->data->ver == USI_VER1) {
+ clk_bulk_disable_unprepare(usi->data->num_clks, usi->clks);
+ return;
+ }
+
+ ret = clk_bulk_prepare_enable(usi->data->num_clks, usi->clks);
+ if (ret)
+ return;
+
+ /* Make sure that we've stopped providing the clock to USI IP */
+ val = readl(usi->regs + USI_OPTION);
+ val &= ~USI_OPTION_CLKREQ_ON;
+ val |= USI_OPTION_CLKSTOP_ON;
+ writel(val, usi->regs + USI_OPTION);
+
+ /* Set USI block state to reset */
+ val = readl(usi->regs + USI_CON);
+ val |= USI_CON_RESET;
+ writel(val, usi->regs + USI_CON);
+
+ clk_bulk_disable_unprepare(usi->data->num_clks, usi->clks);
}
static int exynos_usi_parse_dt(struct device_node *np, struct exynos_usi *usi)
@@ -186,15 +256,11 @@ static int exynos_usi_parse_dt(struct device_node *np, struct exynos_usi *usi)
return -EINVAL;
usi->mode = mode;
- usi->sysreg = syscon_regmap_lookup_by_phandle(np, "samsung,sysreg");
+ usi->sysreg = syscon_regmap_lookup_by_phandle_args(np, "samsung,sysreg",
+ 1, &usi->sw_conf);
if (IS_ERR(usi->sysreg))
return PTR_ERR(usi->sysreg);
- ret = of_property_read_u32_index(np, "samsung,sysreg", 1,
- &usi->sw_conf);
- if (ret)
- return ret;
-
usi->clkreq_on = of_property_read_bool(np, "samsung,clkreq-on");
return 0;
@@ -255,6 +321,10 @@ static int exynos_usi_probe(struct platform_device *pdev)
if (ret)
return ret;
+ ret = devm_add_action_or_reset(&pdev->dev, exynos_usi_unconfigure, usi);
+ if (ret)
+ return ret;
+
/* Make it possible to embed protocol nodes into USI np */
return of_platform_populate(np, NULL, NULL, dev);
}
diff --git a/drivers/soc/samsung/exynos3250-pmu.c b/drivers/soc/samsung/exynos3250-pmu.c
index 30f230ed1769..4bad12a99542 100644
--- a/drivers/soc/samsung/exynos3250-pmu.c
+++ b/drivers/soc/samsung/exynos3250-pmu.c
@@ -5,6 +5,7 @@
//
// Exynos3250 - CPU PMU (Power Management Unit) support
+#include <linux/array_size.h>
#include <linux/soc/samsung/exynos-regs-pmu.h>
#include <linux/soc/samsung/exynos-pmu.h>
diff --git a/drivers/soc/samsung/exynos5250-pmu.c b/drivers/soc/samsung/exynos5250-pmu.c
index 7a2d50be6b4a..2ae5c3e1b07a 100644
--- a/drivers/soc/samsung/exynos5250-pmu.c
+++ b/drivers/soc/samsung/exynos5250-pmu.c
@@ -5,6 +5,7 @@
//
// Exynos5250 - CPU PMU (Power Management Unit) support
+#include <linux/array_size.h>
#include <linux/soc/samsung/exynos-regs-pmu.h>
#include <linux/soc/samsung/exynos-pmu.h>
diff --git a/drivers/soc/samsung/exynos5420-pmu.c b/drivers/soc/samsung/exynos5420-pmu.c
index 6fedcd78cb45..58a2209795f7 100644
--- a/drivers/soc/samsung/exynos5420-pmu.c
+++ b/drivers/soc/samsung/exynos5420-pmu.c
@@ -5,6 +5,7 @@
//
// Exynos5420 - CPU PMU (Power Management Unit) support
+#include <linux/array_size.h>
#include <linux/pm.h>
#include <linux/soc/samsung/exynos-regs-pmu.h>
#include <linux/soc/samsung/exynos-pmu.h>
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-26 07:44:45 +0300