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authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-10 20:40:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-10 20:40:00 -0700
commitae46654bcff303b33facbbd04a3ad9c21d303f9b (patch)
treeb0027d47d6c949162fa6ae306f34abeb76c559a9 /drivers
parent7f1b9be13a7dbe8e51ea541bbcd6c47adae39c71 (diff)
parenta48a7b6b54927159bac77735df00e5b9fc3415fb (diff)
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson: "This branch contains platform-related driver updates for ARM and ARM64. Among them: - Reset driver updates: + New API for dealing with arrays of resets + Make unimplemented {de,}assert return success on shared resets + MSDKv1 driver + Removal of obsolete Gemini reset driver + Misc updates for sunxi and Uniphier - SoC drivers: + Platform SoC driver registration on Tegra + Shuffle of Qualcomm drivers into a submenu + Allwinner A64 support for SRAM + Renesas R-Car R3 support + Power domains for Rockchip RK3366 - Misc updates and smaller fixes for TEE and memory driver subsystems" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits) firmware: arm_scpi: fix endianness of dev_id in struct dev_pstate_set soc/tegra: fuse: Add missing semi-colon soc/tegra: Restrict SoC device registration to Tegra drivers: soc: sunxi: add support for A64 and its SRAM C drivers: soc: sunxi: add support for remapping func value to reg value drivers: soc: sunxi: fix error processing on base address when claiming dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C bus: sunxi-rsb: Enable by default for ARM64 soc/tegra: Register SoC device firmware: tegra: set drvdata earlier memory: Convert to using %pOF instead of full_name soc: Convert to using %pOF instead of full_name bus: Convert to using %pOF instead of full_name firmware: Convert to using %pOF instead of full_name soc: mediatek: add SCPSYS power domain driver for MediaTek MT7622 SoC soc: mediatek: add header files required for MT7622 SCPSYS dt-binding soc: mediatek: reduce code duplication of scpsys_probe across all SoCs dt-bindings: soc: update the binding document for SCPSYS on MediaTek MT7622 SoC reset: uniphier: add analog amplifiers reset control reset: uniphier: add video input subsystem reset control ...
Diffstat (limited to 'drivers')
-rw-r--r--drivers/bus/Kconfig2
-rw-r--r--drivers/bus/arm-cci.c12
-rw-r--r--drivers/bus/imx-weim.c8
-rw-r--r--drivers/bus/sunxi-rsb.c22
-rw-r--r--drivers/firmware/arm_scpi.c4
-rw-r--r--drivers/firmware/psci.c4
-rw-r--r--drivers/firmware/tegra/bpmp.c4
-rw-r--r--drivers/memory/atmel-ebi.c17
-rw-r--r--drivers/memory/jz4780-nemc.c12
-rw-r--r--drivers/memory/mvebu-devbus.c12
-rw-r--r--drivers/memory/omap-gpmc.c16
-rw-r--r--drivers/reset/Kconfig9
-rw-r--r--drivers/reset/Makefile2
-rw-r--r--drivers/reset/core.c238
-rw-r--r--drivers/reset/reset-gemini.c110
-rw-r--r--drivers/reset/reset-hsdk-v1.c137
-rw-r--r--drivers/reset/reset-sunxi.c4
-rw-r--r--drivers/reset/reset-uniphier.c117
-rw-r--r--drivers/reset/reset-zx2967.c2
-rw-r--r--drivers/soc/Kconfig1
-rw-r--r--drivers/soc/Makefile1
-rw-r--r--drivers/soc/amlogic/Kconfig12
-rw-r--r--drivers/soc/amlogic/Makefile1
-rw-r--r--drivers/soc/amlogic/meson-gx-socinfo.c177
-rw-r--r--drivers/soc/fsl/qbman/bman_ccsr.c10
-rw-r--r--drivers/soc/fsl/qbman/bman_portal.c8
-rw-r--r--drivers/soc/fsl/qbman/qman_ccsr.c12
-rw-r--r--drivers/soc/fsl/qbman/qman_portal.c11
-rw-r--r--drivers/soc/fsl/qe/gpio.c4
-rw-r--r--drivers/soc/mediatek/mtk-pmic-wrap.c10
-rw-r--r--drivers/soc/mediatek/mtk-scpsys.c247
-rw-r--r--drivers/soc/qcom/Kconfig4
-rw-r--r--drivers/soc/qcom/mdt_loader.c5
-rw-r--r--drivers/soc/qcom/smsm.c3
-rw-r--r--drivers/soc/qcom/wcnss_ctrl.c1
-rw-r--r--drivers/soc/renesas/Kconfig7
-rw-r--r--drivers/soc/renesas/Makefile1
-rw-r--r--drivers/soc/renesas/r8a77995-sysc.c31
-rw-r--r--drivers/soc/renesas/rcar-rst.c5
-rw-r--r--drivers/soc/renesas/rcar-sysc.c9
-rw-r--r--drivers/soc/renesas/rcar-sysc.h1
-rw-r--r--drivers/soc/renesas/renesas-soc.c8
-rw-r--r--drivers/soc/rockchip/grf.c14
-rw-r--r--drivers/soc/rockchip/pm_domains.c32
-rw-r--r--drivers/soc/samsung/pm_domains.c10
-rw-r--r--drivers/soc/sunxi/sunxi_sram.c57
-rw-r--r--drivers/soc/tegra/Kconfig5
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra.c56
-rw-r--r--drivers/soc/tegra/pmc.c4
-rw-r--r--drivers/tee/optee/core.c19
-rw-r--r--drivers/tee/optee/optee_smc.h12
-rw-r--r--drivers/tee/optee/rpc.c15
-rw-r--r--drivers/tee/tee_core.c5
-rw-r--r--drivers/tee/tee_shm.c2
54 files changed, 1102 insertions, 430 deletions
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index 2408ea38a39c..ae3d8f3444b9 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -132,7 +132,7 @@ config SIMPLE_PM_BUS
config SUNXI_RSB
tristate "Allwinner sunXi Reduced Serial Bus Driver"
- default MACH_SUN8I || MACH_SUN9I
+ default MACH_SUN8I || MACH_SUN9I || ARM64
depends on ARCH_SUNXI
select REGMAP
help
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index c49da15d9790..3c29d36702a8 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -2124,8 +2124,8 @@ int notrace __cci_control_port_by_device(struct device_node *dn, bool enable)
return -ENODEV;
port = __cci_ace_get_port(dn, ACE_LITE_PORT);
- if (WARN_ONCE(port < 0, "node %s ACE lite port look-up failure\n",
- dn->full_name))
+ if (WARN_ONCE(port < 0, "node %pOF ACE lite port look-up failure\n",
+ dn))
return -ENODEV;
cci_port_control(port, enable);
return 0;
@@ -2200,14 +2200,14 @@ static int cci_probe_ports(struct device_node *np)
if (of_property_read_string(cp, "interface-type",
&match_str)) {
- WARN(1, "node %s missing interface-type property\n",
- cp->full_name);
+ WARN(1, "node %pOF missing interface-type property\n",
+ cp);
continue;
}
is_ace = strcmp(match_str, "ace") == 0;
if (!is_ace && strcmp(match_str, "ace-lite")) {
- WARN(1, "node %s containing invalid interface-type property, skipping it\n",
- cp->full_name);
+ WARN(1, "node %pOF containing invalid interface-type property, skipping it\n",
+ cp);
continue;
}
diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
index 4bd361d64270..3d56ebcda720 100644
--- a/drivers/bus/imx-weim.c
+++ b/drivers/bus/imx-weim.c
@@ -156,8 +156,8 @@ static int __init weim_parse_dt(struct platform_device *pdev,
ret = weim_timing_setup(child, base, devtype);
if (ret)
- dev_warn(&pdev->dev, "%s set timing failed.\n",
- child->full_name);
+ dev_warn(&pdev->dev, "%pOF set timing failed.\n",
+ child);
else
have_child = 1;
}
@@ -166,8 +166,8 @@ static int __init weim_parse_dt(struct platform_device *pdev,
ret = of_platform_default_populate(pdev->dev.of_node,
NULL, &pdev->dev);
if (ret)
- dev_err(&pdev->dev, "%s fail to create devices.\n",
- pdev->dev.of_node->full_name);
+ dev_err(&pdev->dev, "%pOF fail to create devices.\n",
+ pdev->dev.of_node);
return ret;
}
diff --git a/drivers/bus/sunxi-rsb.c b/drivers/bus/sunxi-rsb.c
index 795c9d9c96a6..328ca93781cf 100644
--- a/drivers/bus/sunxi-rsb.c
+++ b/drivers/bus/sunxi-rsb.c
@@ -556,20 +556,20 @@ static int of_rsb_register_devices(struct sunxi_rsb *rsb)
/* Runtime addresses for all slaves should be set first */
for_each_available_child_of_node(np, child) {
- dev_dbg(dev, "setting child %s runtime address\n",
- child->full_name);
+ dev_dbg(dev, "setting child %pOF runtime address\n",
+ child);
ret = of_property_read_u32(child, "reg", &hwaddr);
if (ret) {
- dev_err(dev, "%s: invalid 'reg' property: %d\n",
- child->full_name, ret);
+ dev_err(dev, "%pOF: invalid 'reg' property: %d\n",
+ child, ret);
continue;
}
rtaddr = sunxi_rsb_get_rtaddr(hwaddr);
if (!rtaddr) {
- dev_err(dev, "%s: unknown hardware device address\n",
- child->full_name);
+ dev_err(dev, "%pOF: unknown hardware device address\n",
+ child);
continue;
}
@@ -586,15 +586,15 @@ static int of_rsb_register_devices(struct sunxi_rsb *rsb)
/* send command */
ret = _sunxi_rsb_run_xfer(rsb);
if (ret)
- dev_warn(dev, "%s: set runtime address failed: %d\n",
- child->full_name, ret);
+ dev_warn(dev, "%pOF: set runtime address failed: %d\n",
+ child, ret);
}
/* Then we start adding devices and probing them */
for_each_available_child_of_node(np, child) {
struct sunxi_rsb_device *rdev;
- dev_dbg(dev, "adding child %s\n", child->full_name);
+ dev_dbg(dev, "adding child %pOF\n", child);
ret = of_property_read_u32(child, "reg", &hwaddr);
if (ret)
@@ -606,8 +606,8 @@ static int of_rsb_register_devices(struct sunxi_rsb *rsb)
rdev = sunxi_rsb_device_create(rsb, child, hwaddr, rtaddr);
if (IS_ERR(rdev))
- dev_err(dev, "failed to add child device %s: %ld\n",
- child->full_name, PTR_ERR(rdev));
+ dev_err(dev, "failed to add child device %pOF: %ld\n",
+ child, PTR_ERR(rdev));
}
return 0;
diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c
index 8043e51de897..7da9f1b83ebe 100644
--- a/drivers/firmware/arm_scpi.c
+++ b/drivers/firmware/arm_scpi.c
@@ -357,7 +357,7 @@ struct sensor_value {
} __packed;
struct dev_pstate_set {
- u16 dev_id;
+ __le16 dev_id;
u8 pstate;
} __packed;
@@ -965,7 +965,7 @@ static int scpi_probe(struct platform_device *pdev)
count = of_count_phandle_with_args(np, "mboxes", "#mbox-cells");
if (count < 0) {
- dev_err(dev, "no mboxes property in '%s'\n", np->full_name);
+ dev_err(dev, "no mboxes property in '%pOF'\n", np);
return -ENODEV;
}
diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c
index 493a56a4cfc4..d687ca3d5049 100644
--- a/drivers/firmware/psci.c
+++ b/drivers/firmware/psci.c
@@ -280,8 +280,8 @@ static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
"arm,psci-suspend-param",
&state);
if (ret) {
- pr_warn(" * %s missing arm,psci-suspend-param property\n",
- state_node->full_name);
+ pr_warn(" * %pOF missing arm,psci-suspend-param property\n",
+ state_node);
of_node_put(state_node);
goto free_mem;
}
diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c
index b25179517cc5..73ca55b7b7ec 100644
--- a/drivers/firmware/tegra/bpmp.c
+++ b/drivers/firmware/tegra/bpmp.c
@@ -806,6 +806,8 @@ static int tegra_bpmp_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "firmware: %s\n", tag);
+ platform_set_drvdata(pdev, bpmp);
+
err = of_platform_default_populate(pdev->dev.of_node, NULL, &pdev->dev);
if (err < 0)
goto free_mrq;
@@ -822,8 +824,6 @@ static int tegra_bpmp_probe(struct platform_device *pdev)
if (err < 0)
goto free_mrq;
- platform_set_drvdata(pdev, bpmp);
-
return 0;
free_mrq:
diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c
index c00a7c7f460a..b907865d4664 100644
--- a/drivers/memory/atmel-ebi.c
+++ b/drivers/memory/atmel-ebi.c
@@ -159,8 +159,8 @@ static int atmel_ebi_xslate_smc_timings(struct atmel_ebi_dev *ebid,
out:
if (ret) {
dev_err(ebid->ebi->dev,
- "missing or invalid timings definition in %s",
- np->full_name);
+ "missing or invalid timings definition in %pOF",
+ np);
return ret;
}
@@ -270,8 +270,8 @@ static int atmel_ebi_xslate_smc_config(struct atmel_ebi_dev *ebid,
return -EINVAL;
if ((ret > 0 && !required) || (!ret && required)) {
- dev_err(ebid->ebi->dev, "missing atmel,smc- properties in %s",
- np->full_name);
+ dev_err(ebid->ebi->dev, "missing atmel,smc- properties in %pOF",
+ np);
return -EINVAL;
}
@@ -314,8 +314,7 @@ static int atmel_ebi_dev_setup(struct atmel_ebi *ebi, struct device_node *np,
if (cs >= AT91_MATRIX_EBI_NUM_CS ||
!(ebi->caps->available_cs & BIT(cs))) {
- dev_err(dev, "invalid reg property in %s\n",
- np->full_name);
+ dev_err(dev, "invalid reg property in %pOF\n", np);
return -EINVAL;
}
@@ -324,7 +323,7 @@ static int atmel_ebi_dev_setup(struct atmel_ebi *ebi, struct device_node *np,
}
if (!numcs) {
- dev_err(dev, "invalid reg property in %s\n", np->full_name);
+ dev_err(dev, "invalid reg property in %pOF\n", np);
return -EINVAL;
}
@@ -576,8 +575,8 @@ static int atmel_ebi_probe(struct platform_device *pdev)
ret = atmel_ebi_dev_setup(ebi, child, reg_cells);
if (ret) {
- dev_err(dev, "failed to configure EBI bus for %s, disabling the device",
- child->full_name);
+ dev_err(dev, "failed to configure EBI bus for %pOF, disabling the device",
+ child);
ret = atmel_ebi_dev_disable(ebi, child);
if (ret)
diff --git a/drivers/memory/jz4780-nemc.c b/drivers/memory/jz4780-nemc.c
index 919d1925acb9..bcf06adefc96 100644
--- a/drivers/memory/jz4780-nemc.c
+++ b/drivers/memory/jz4780-nemc.c
@@ -322,8 +322,8 @@ static int jz4780_nemc_probe(struct platform_device *pdev)
bank = of_read_number(prop, 1);
if (bank < 1 || bank >= JZ4780_NEMC_NUM_BANKS) {
dev_err(nemc->dev,
- "%s requests invalid bank %u\n",
- child->full_name, bank);
+ "%pOF requests invalid bank %u\n",
+ child, bank);
/* Will continue the outer loop below. */
referenced = 0;
@@ -334,12 +334,12 @@ static int jz4780_nemc_probe(struct platform_device *pdev)
}
if (!referenced) {
- dev_err(nemc->dev, "%s has no addresses\n",
- child->full_name);
+ dev_err(nemc->dev, "%pOF has no addresses\n",
+ child);
continue;
} else if (nemc->banks_present & referenced) {
- dev_err(nemc->dev, "%s conflicts with another node\n",
- child->full_name);
+ dev_err(nemc->dev, "%pOF conflicts with another node\n",
+ child);
continue;
}
diff --git a/drivers/memory/mvebu-devbus.c b/drivers/memory/mvebu-devbus.c
index 24852812fd44..981860879d02 100644
--- a/drivers/memory/mvebu-devbus.c
+++ b/drivers/memory/mvebu-devbus.c
@@ -105,8 +105,8 @@ static int get_timing_param_ps(struct devbus *devbus,
err = of_property_read_u32(node, name, &time_ps);
if (err < 0) {
- dev_err(devbus->dev, "%s has no '%s' property\n",
- name, node->full_name);
+ dev_err(devbus->dev, "%pOF has no '%s' property\n",
+ node, name);
return err;
}
@@ -127,8 +127,8 @@ static int devbus_get_timing_params(struct devbus *devbus,
err = of_property_read_u32(node, "devbus,bus-width", &r->bus_width);
if (err < 0) {
dev_err(devbus->dev,
- "%s has no 'devbus,bus-width' property\n",
- node->full_name);
+ "%pOF has no 'devbus,bus-width' property\n",
+ node);
return err;
}
@@ -180,8 +180,8 @@ static int devbus_get_timing_params(struct devbus *devbus,
&w->sync_enable);
if (err < 0) {
dev_err(devbus->dev,
- "%s has no 'devbus,sync-enable' property\n",
- node->full_name);
+ "%pOF has no 'devbus,sync-enable' property\n",
+ node);
return err;
}
}
diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index a80e17de906d..7059bbda2fac 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -1930,8 +1930,8 @@ static int gpmc_probe_onenand_child(struct platform_device *pdev,
struct omap_onenand_platform_data *gpmc_onenand_data;
if (of_property_read_u32(child, "reg", &val) < 0) {
- dev_err(&pdev->dev, "%s has no 'reg' property\n",
- child->full_name);
+ dev_err(&pdev->dev, "%pOF has no 'reg' property\n",
+ child);
return -ENODEV;
}
@@ -1979,14 +1979,14 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
struct gpmc_device *gpmc = platform_get_drvdata(pdev);
if (of_property_read_u32(child, "reg", &cs) < 0) {
- dev_err(&pdev->dev, "%s has no 'reg' property\n",
- child->full_name);
+ dev_err(&pdev->dev, "%pOF has no 'reg' property\n",
+ child);
return -ENODEV;
}
if (of_address_to_resource(child, 0, &res) < 0) {
- dev_err(&pdev->dev, "%s has malformed 'reg' property\n",
- child->full_name);
+ dev_err(&pdev->dev, "%pOF has malformed 'reg' property\n",
+ child);
return -ENODEV;
}
@@ -2084,8 +2084,8 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
ret = of_property_read_u32(child, "bank-width",
&gpmc_s.device_width);
if (ret < 0) {
- dev_err(&pdev->dev, "%s has no 'bank-width' property\n",
- child->full_name);
+ dev_err(&pdev->dev, "%pOF has no 'bank-width' property\n",
+ child);
goto err;
}
}
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 608c071e4bbf..52d5251660b9 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -34,12 +34,11 @@ config RESET_BERLIN
help
This enables the reset controller driver for Marvell Berlin SoCs.
-config RESET_GEMINI
- bool "Gemini Reset Driver" if COMPILE_TEST
- default ARCH_GEMINI
- select MFD_SYSCON
+config RESET_HSDK_V1
+ bool "HSDK v1 Reset Driver"
+ default n
help
- This enables the reset controller driver for Cortina Systems Gemini.
+ This enables the reset controller driver for HSDK v1.
config RESET_IMX7
bool "i.MX7 Reset Driver" if COMPILE_TEST
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 7081f9da2599..b62783f50fe5 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -5,7 +5,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
-obj-$(CONFIG_RESET_GEMINI) += reset-gemini.o
+obj-$(CONFIG_RESET_HSDK_V1) += reset-hsdk-v1.o
obj-$(CONFIG_RESET_IMX7) += reset-imx7.o
obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o
obj-$(CONFIG_RESET_MESON) += reset-meson.o
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index 0090784ff410..1d21c6f7d56c 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -43,11 +43,24 @@ struct reset_control {
unsigned int id;
struct kref refcnt;
bool shared;
+ bool array;
atomic_t deassert_count;
atomic_t triggered_count;
};
/**
+ * struct reset_control_array - an array of reset controls
+ * @base: reset control for compatibility with reset control API functions
+ * @num_rstcs: number of reset controls
+ * @rstc: array of reset controls
+ */
+struct reset_control_array {
+ struct reset_control base;
+ unsigned int num_rstcs;
+ struct reset_control *rstc[];
+};
+
+/**
* of_reset_simple_xlate - translate reset_spec to the reset line number
* @rcdev: a pointer to the reset controller device
* @reset_spec: reset line specifier as found in the device tree
@@ -135,6 +148,65 @@ int devm_reset_controller_register(struct device *dev,
}
EXPORT_SYMBOL_GPL(devm_reset_controller_register);
+static inline struct reset_control_array *
+rstc_to_array(struct reset_control *rstc) {
+ return container_of(rstc, struct reset_control_array, base);
+}
+
+static int reset_control_array_reset(struct reset_control_array *resets)
+{
+ int ret, i;
+
+ for (i = 0; i < resets->num_rstcs; i++) {
+ ret = reset_control_reset(resets->rstc[i]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int reset_control_array_assert(struct reset_control_array *resets)
+{
+ int ret, i;
+
+ for (i = 0; i < resets->num_rstcs; i++) {
+ ret = reset_control_assert(resets->rstc[i]);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ while (i--)
+ reset_control_deassert(resets->rstc[i]);
+ return ret;
+}
+
+static int reset_control_array_deassert(struct reset_control_array *resets)
+{
+ int ret, i;
+
+ for (i = 0; i < resets->num_rstcs; i++) {
+ ret = reset_control_deassert(resets->rstc[i]);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ while (i--)
+ reset_control_assert(resets->rstc[i]);
+ return ret;
+}
+
+static inline bool reset_control_is_array(struct reset_control *rstc)
+{
+ return rstc->array;
+}
+
/**
* reset_control_reset - reset the controlled device
* @rstc: reset controller
@@ -158,6 +230,9 @@ int reset_control_reset(struct reset_control *rstc)
if (WARN_ON(IS_ERR(rstc)))
return -EINVAL;
+ if (reset_control_is_array(rstc))
+ return reset_control_array_reset(rstc_to_array(rstc));
+
if (!rstc->rcdev->ops->reset)
return -ENOTSUPP;
@@ -202,8 +277,8 @@ int reset_control_assert(struct reset_control *rstc)
if (WARN_ON(IS_ERR(rstc)))
return -EINVAL;
- if (!rstc->rcdev->ops->assert)
- return -ENOTSUPP;
+ if (reset_control_is_array(rstc))
+ return reset_control_array_assert(rstc_to_array(rstc));
if (rstc->shared) {
if (WARN_ON(atomic_read(&rstc->triggered_count) != 0))
@@ -214,6 +289,21 @@ int reset_control_assert(struct reset_control *rstc)
if (atomic_dec_return(&rstc->deassert_count) != 0)
return 0;
+
+ /*
+ * Shared reset controls allow the reset line to be in any state
+ * after this call, so doing nothing is a valid option.
+ */
+ if (!rstc->rcdev->ops->assert)
+ return 0;
+ } else {
+ /*
+ * If the reset controller does not implement .assert(), there
+ * is no way to guarantee that the reset line is asserted after
+ * this call.
+ */
+ if (!rstc->rcdev->ops->assert)
+ return -ENOTSUPP;
}
return rstc->rcdev->ops->assert(rstc->rcdev, rstc->id);
@@ -240,8 +330,8 @@ int reset_control_deassert(struct reset_control *rstc)
if (WARN_ON(IS_ERR(rstc)))
return -EINVAL;
- if (!rstc->rcdev->ops->deassert)
- return -ENOTSUPP;
+ if (reset_control_is_array(rstc))
+ return reset_control_array_deassert(rstc_to_array(rstc));
if (rstc->shared) {
if (WARN_ON(atomic_read(&rstc->triggered_count) != 0))
@@ -251,6 +341,16 @@ int reset_control_deassert(struct reset_control *rstc)
return 0;
}
+ /*
+ * If the reset controller does not implement .deassert(), we assume
+ * that it handles self-deasserting reset lines via .reset(). In that
+ * case, the reset lines are deasserted by default. If that is not the
+ * case, the reset controller driver should implement .deassert() and
+ * return -ENOTSUPP.
+ */
+ if (!rstc->rcdev->ops->deassert)
+ return 0;
+
return rstc->rcdev->ops->deassert(rstc->rcdev, rstc->id);
}
EXPORT_SYMBOL_GPL(reset_control_deassert);
@@ -266,7 +366,7 @@ int reset_control_status(struct reset_control *rstc)
if (!rstc)
return 0;
- if (WARN_ON(IS_ERR(rstc)))
+ if (WARN_ON(IS_ERR(rstc)) || reset_control_is_array(rstc))
return -EINVAL;
if (rstc->rcdev->ops->status)
@@ -404,6 +504,16 @@ struct reset_control *__reset_control_get(struct device *dev, const char *id,
}
EXPORT_SYMBOL_GPL(__reset_control_get);
+static void reset_control_array_put(struct reset_control_array *resets)
+{
+ int i;
+
+ mutex_lock(&reset_list_mutex);
+ for (i = 0; i < resets->num_rstcs; i++)
+ __reset_control_put_internal(resets->rstc[i]);
+ mutex_unlock(&reset_list_mutex);
+}
+
/**
* reset_control_put - free the reset controller
* @rstc: reset controller
@@ -413,6 +523,11 @@ void reset_control_put(struct reset_control *rstc)
if (IS_ERR_OR_NULL(rstc))
return;
+ if (reset_control_is_array(rstc)) {
+ reset_control_array_put(rstc_to_array(rstc));
+ return;
+ }
+
mutex_lock(&reset_list_mutex);
__reset_control_put_internal(rstc);
mutex_unlock(&reset_list_mutex);
@@ -472,3 +587,116 @@ int device_reset(struct device *dev)
return ret;
}
EXPORT_SYMBOL_GPL(device_reset);
+
+/**
+ * APIs to manage an array of reset controls.
+ */
+/**
+ * of_reset_control_get_count - Count number of resets available with a device
+ *
+ * @node: device node that contains 'resets'.
+ *
+ * Returns positive reset count on success, or error number on failure and
+ * on count being zero.
+ */
+static int of_reset_control_get_count(struct device_node *node)
+{
+ int