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:
 "Some of the larger changes this merge window:

   - Removal of drivers for Exynos5440, a Samsung SoC that never saw
     widespread use.

   - Uniphier support for USB3 and SPI reset handling

   - Syste control and SRAM drivers and bindings for Allwinner platforms

   - Qualcomm AOSS (Always-on subsystem) reset controller drivers

   - Raspberry Pi hwmon driver for voltage

   - Mediatek pwrap (pmic) support for MT6797 SoC"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (52 commits)
  drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug tests
  soc: fsl: cleanup Kconfig menu
  soc: fsl: dpio: Convert DPIO documentation to .rst
  staging: fsl-mc: Remove remaining files
  staging: fsl-mc: Move DPIO from staging to drivers/soc/fsl
  staging: fsl-dpaa2: eth: move generic FD defines to DPIO
  soc: fsl: qe: gpio: Add qe_gpio_set_multiple
  usb: host: exynos: Remove support for Exynos5440
  clk: samsung: Remove support for Exynos5440
  soc: sunxi: Add the A13, A23 and H3 system control compatibles
  reset: uniphier: add reset control support for SPI
  cpufreq: exynos: Remove support for Exynos5440
  ata: ahci-platform: Remove support for Exynos5440
  soc: imx6qp: Use GENPD_FLAG_ALWAYS_ON for PU errata
  soc: mediatek: pwrap: add mt6351 driver for mt6797 SoCs
  soc: mediatek: pwrap: add pwrap driver for mt6797 SoCs
  soc: mediatek: pwrap: fix cipher init setting error
  dt-bindings: pwrap: mediatek: add pwrap support for MT6797
  reset: uniphier: add USB3 core reset control
  dt-bindings: reset: uniphier: add USB3 core reset support
  ...

1 files changed, 133 insertions, 0 deletions

diff --git a/drivers/reset/reset-qcom-aoss.c b/drivers/reset/reset-qcom-aoss.c
new file mode 100644
index 000000000000..36db96750450
--- /dev/null
+++ b/drivers/reset/reset-qcom-aoss.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/of_device.h>
+#include <dt-bindings/reset/qcom,sdm845-aoss.h>
+
+struct qcom_aoss_reset_map {
+	unsigned int reg;
+};
+
+struct qcom_aoss_desc {
+	const struct qcom_aoss_reset_map *resets;
+	size_t num_resets;
+};
+
+struct qcom_aoss_reset_data {
+	struct reset_controller_dev rcdev;
+	void __iomem *base;
+	const struct qcom_aoss_desc *desc;
+};
+
+static const struct qcom_aoss_reset_map sdm845_aoss_resets[] = {
+	[AOSS_CC_MSS_RESTART] = {0x10000},
+	[AOSS_CC_CAMSS_RESTART] = {0x11000},
+	[AOSS_CC_VENUS_RESTART] = {0x12000},
+	[AOSS_CC_GPU_RESTART] = {0x13000},
+	[AOSS_CC_DISPSS_RESTART] = {0x14000},
+	[AOSS_CC_WCSS_RESTART] = {0x20000},
+	[AOSS_CC_LPASS_RESTART] = {0x30000},
+};
+
+static const struct qcom_aoss_desc sdm845_aoss_desc = {
+	.resets = sdm845_aoss_resets,
+	.num_resets = ARRAY_SIZE(sdm845_aoss_resets),
+};
+
+static inline struct qcom_aoss_reset_data *to_qcom_aoss_reset_data(
+				struct reset_controller_dev *rcdev)
+{
+	return container_of(rcdev, struct qcom_aoss_reset_data, rcdev);
+}
+
+static int qcom_aoss_control_assert(struct reset_controller_dev *rcdev,
+				    unsigned long idx)
+{
+	struct qcom_aoss_reset_data *data = to_qcom_aoss_reset_data(rcdev);
+	const struct qcom_aoss_reset_map *map = &data->desc->resets[idx];
+
+	writel(1, data->base + map->reg);
+	/* Wait 6 32kHz sleep cycles for reset */
+	usleep_range(200, 300);
+	return 0;
+}
+
+static int qcom_aoss_control_deassert(struct reset_controller_dev *rcdev,
+				      unsigned long idx)
+{
+	struct qcom_aoss_reset_data *data = to_qcom_aoss_reset_data(rcdev);
+	const struct qcom_aoss_reset_map *map = &data->desc->resets[idx];
+
+	writel(0, data->base + map->reg);
+	/* Wait 6 32kHz sleep cycles for reset */
+	usleep_range(200, 300);
+	return 0;
+}
+
+static int qcom_aoss_control_reset(struct reset_controller_dev *rcdev,
+					unsigned long idx)
+{
+	qcom_aoss_control_assert(rcdev, idx);
+
+	return qcom_aoss_control_deassert(rcdev, idx);
+}
+
+static const struct reset_control_ops qcom_aoss_reset_ops = {
+	.reset = qcom_aoss_control_reset,
+	.assert = qcom_aoss_control_assert,
+	.deassert = qcom_aoss_control_deassert,
+};
+
+static int qcom_aoss_reset_probe(struct platform_device *pdev)
+{
+	struct qcom_aoss_reset_data *data;
+	struct device *dev = &pdev->dev;
+	const struct qcom_aoss_desc *desc;
+	struct resource *res;
+
+	desc = of_device_get_match_data(dev);
+	if (!desc)
+		return -EINVAL;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->desc = desc;
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	data->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(data->base))
+		return PTR_ERR(data->base);
+
+	data->rcdev.owner = THIS_MODULE;
+	data->rcdev.ops = &qcom_aoss_reset_ops;
+	data->rcdev.nr_resets = desc->num_resets;
+	data->rcdev.of_node = dev->of_node;
+
+	return devm_reset_controller_register(dev, &data->rcdev);
+}
+
+static const struct of_device_id qcom_aoss_reset_of_match[] = {
+	{ .compatible = "qcom,sdm845-aoss-cc", .data = &sdm845_aoss_desc },
+	{}
+};
+
+static struct platform_driver qcom_aoss_reset_driver = {
+	.probe = qcom_aoss_reset_probe,
+	.driver  = {
+		.name = "qcom_aoss_reset",
+		.of_match_table = qcom_aoss_reset_of_match,
+	},
+};
+
+builtin_platform_driver(qcom_aoss_reset_driver);
+
+MODULE_DESCRIPTION("Qualcomm AOSS Reset Driver");
+MODULE_LICENSE("GPL v2");