Merge tag 'rproc-v4.9' of git://github.com/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:
 "In addition to a slew of minor fixes and cleanups these patches
  refactor how we deal with remoteprocs that will be auto-booting
  themselves.

  That does clean up the remote resource handling but makes for
  additional work to clarify responsibilities and life cycles of
  resources. We also revise how module locking of remoteproc drivers
  work, so that they are locked as we hand out references to them to
  third parties, rather than only when booted by anyone.

  In addition to that we also introduce the Qualcomm Wireless Subsystem
  remoteproc driver"

* tag 'rproc-v4.9' of git://github.com/andersson/remoteproc: (26 commits)
  remoteproc: Refactor rproc module locking
  remoteproc: Split driver and consumer dereferencing
  remoteproc: Correct resource handling upon boot failure
  remoteproc: Drop unnecessary NULL check
  remoteproc: core: transform struct fw_rsc_vdev_vring reserved field in pa
  remoteproc: Modify FW_RSC_ADDR_ANY definition
  remoteproc: qcom: wcnss: Fix return value check in wcnss_probe()
  remoteproc: qcom: Introduce WCNSS peripheral image loader
  dt-binding: remoteproc: Introduce Qualcomm WCNSS loader binding
  remoteproc: Only update table_ptr if we have a loaded table
  remoteproc: Move handling of cached table to boot/shutdown
  remoteproc: Move vdev handling to boot/shutdown
  remoteproc: Calculate max_notifyid during load
  remoteproc: Introduce auto-boot flag
  remoteproc/omap: revise a minor error trace message
  remoteproc/omap: fix various code formatting issues
  remoteproc: print hex numbers with a leading 0x format
  remoteproc: align code with open parenthesis
  remoteproc: fix bare unsigned type usage
  remoteproc: use variable names for sizeof() operator
  ...

1 files changed, 188 insertions, 0 deletions

diff --git a/drivers/remoteproc/qcom_wcnss_iris.c b/drivers/remoteproc/qcom_wcnss_iris.c
new file mode 100644
index 000000000000..f0ca24a8dd0b
--- /dev/null
+++ b/drivers/remoteproc/qcom_wcnss_iris.c
@@ -0,0 +1,188 @@
+/*
+ * Qualcomm Wireless Connectivity Subsystem Iris driver
+ *
+ * Copyright (C) 2016 Linaro Ltd
+ * Copyright (C) 2014 Sony Mobile Communications AB
+ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+
+#include "qcom_wcnss.h"
+
+struct qcom_iris {
+	struct device *dev;
+
+	struct clk *xo_clk;
+
+	struct regulator_bulk_data *vregs;
+	size_t num_vregs;
+};
+
+struct iris_data {
+	const struct wcnss_vreg_info *vregs;
+	size_t num_vregs;
+
+	bool use_48mhz_xo;
+};
+
+static const struct iris_data wcn3620_data = {
+	.vregs = (struct wcnss_vreg_info[]) {
+		{ "vddxo",  1800000, 1800000, 10000 },
+		{ "vddrfa", 1300000, 1300000, 100000 },
+		{ "vddpa",  3300000, 3300000, 515000 },
+		{ "vdddig", 1800000, 1800000, 10000 },
+	},
+	.num_vregs = 4,
+	.use_48mhz_xo = false,
+};
+
+static const struct iris_data wcn3660_data = {
+	.vregs = (struct wcnss_vreg_info[]) {
+		{ "vddxo",  1800000, 1800000, 10000 },
+		{ "vddrfa", 1300000, 1300000, 100000 },
+		{ "vddpa",  2900000, 3000000, 515000 },
+		{ "vdddig", 1200000, 1225000, 10000 },
+	},
+	.num_vregs = 4,
+	.use_48mhz_xo = true,
+};
+
+static const struct iris_data wcn3680_data = {
+	.vregs = (struct wcnss_vreg_info[]) {
+		{ "vddxo",  1800000, 1800000, 10000 },
+		{ "vddrfa", 1300000, 1300000, 100000 },
+		{ "vddpa",  3300000, 3300000, 515000 },
+		{ "vdddig", 1800000, 1800000, 10000 },
+	},
+	.num_vregs = 4,
+	.use_48mhz_xo = true,
+};
+
+int qcom_iris_enable(struct qcom_iris *iris)
+{
+	int ret;
+
+	ret = regulator_bulk_enable(iris->num_vregs, iris->vregs);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(iris->xo_clk);
+	if (ret) {
+		dev_err(iris->dev, "failed to enable xo clk\n");
+		goto disable_regulators;
+	}
+
+	return 0;
+
+disable_regulators:
+	regulator_bulk_disable(iris->num_vregs, iris->vregs);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(qcom_iris_enable);
+
+void qcom_iris_disable(struct qcom_iris *iris)
+{
+	clk_disable_unprepare(iris->xo_clk);
+	regulator_bulk_disable(iris->num_vregs, iris->vregs);
+}
+EXPORT_SYMBOL_GPL(qcom_iris_disable);
+
+static int qcom_iris_probe(struct platform_device *pdev)
+{
+	const struct iris_data *data;
+	struct qcom_wcnss *wcnss;
+	struct qcom_iris *iris;
+	int ret;
+	int i;
+
+	iris = devm_kzalloc(&pdev->dev, sizeof(struct qcom_iris), GFP_KERNEL);
+	if (!iris)
+		return -ENOMEM;
+
+	data = of_device_get_match_data(&pdev->dev);
+	wcnss = dev_get_drvdata(pdev->dev.parent);
+
+	iris->xo_clk = devm_clk_get(&pdev->dev, "xo");
+	if (IS_ERR(iris->xo_clk)) {
+		if (PTR_ERR(iris->xo_clk) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to acquire xo clk\n");
+		return PTR_ERR(iris->xo_clk);
+	}
+
+	iris->num_vregs = data->num_vregs;
+	iris->vregs = devm_kcalloc(&pdev->dev,
+				   iris->num_vregs,
+				   sizeof(struct regulator_bulk_data),
+				   GFP_KERNEL);
+	if (!iris->vregs)
+		return -ENOMEM;
+
+	for (i = 0; i < iris->num_vregs; i++)
+		iris->vregs[i].supply = data->vregs[i].name;
+
+	ret = devm_regulator_bulk_get(&pdev->dev, iris->num_vregs, iris->vregs);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to get regulators\n");
+		return ret;
+	}
+
+	for (i = 0; i < iris->num_vregs; i++) {
+		if (data->vregs[i].max_voltage)
+			regulator_set_voltage(iris->vregs[i].consumer,
+					      data->vregs[i].min_voltage,
+					      data->vregs[i].max_voltage);
+
+		if (data->vregs[i].load_uA)
+			regulator_set_load(iris->vregs[i].consumer,
+					   data->vregs[i].load_uA);
+	}
+
+	qcom_wcnss_assign_iris(wcnss, iris, data->use_48mhz_xo);
+
+	return 0;
+}
+
+static int qcom_iris_remove(struct platform_device *pdev)
+{
+	struct qcom_wcnss *wcnss = dev_get_drvdata(pdev->dev.parent);
+
+	qcom_wcnss_assign_iris(wcnss, NULL, false);
+
+	return 0;
+}
+
+static const struct of_device_id iris_of_match[] = {
+	{ .compatible = "qcom,wcn3620", .data = &wcn3620_data },
+	{ .compatible = "qcom,wcn3660", .data = &wcn3660_data },
+	{ .compatible = "qcom,wcn3680", .data = &wcn3680_data },
+	{}
+};
+
+static struct platform_driver wcnss_driver = {
+	.probe = qcom_iris_probe,
+	.remove = qcom_iris_remove,
+	.driver = {
+		.name = "qcom-iris",
+		.of_match_table = iris_of_match,
+	},
+};
+
+module_platform_driver(wcnss_driver);
+MODULE_DESCRIPTION("Qualcomm Wireless Subsystem Iris driver");
+MODULE_LICENSE("GPL v2");