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cff66ace51
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174638.4058268-1-robh@kernel.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* RPM over SMD communication wrapper for interconnects
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*
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* Copyright (C) 2019 Linaro Ltd
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* Author: Georgi Djakov <georgi.djakov@linaro.org>
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*/
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#include <linux/interconnect-provider.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/soc/qcom/smd-rpm.h>
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#include "icc-rpm.h"
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#define RPM_KEY_BW 0x00007762
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#define QCOM_RPM_SMD_KEY_RATE 0x007a484b
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static struct qcom_smd_rpm *icc_smd_rpm;
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struct icc_rpm_smd_req {
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__le32 key;
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__le32 nbytes;
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__le32 value;
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};
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bool qcom_icc_rpm_smd_available(void)
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{
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return !!icc_smd_rpm;
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}
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EXPORT_SYMBOL_GPL(qcom_icc_rpm_smd_available);
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int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val)
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{
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struct icc_rpm_smd_req req = {
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.key = cpu_to_le32(RPM_KEY_BW),
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.nbytes = cpu_to_le32(sizeof(u32)),
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.value = cpu_to_le32(val),
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};
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return qcom_rpm_smd_write(icc_smd_rpm, ctx, rsc_type, id, &req,
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sizeof(req));
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}
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EXPORT_SYMBOL_GPL(qcom_icc_rpm_smd_send);
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int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int ctx, u32 rate)
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{
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struct clk_smd_rpm_req req = {
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.key = cpu_to_le32(QCOM_RPM_SMD_KEY_RATE),
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.nbytes = cpu_to_le32(sizeof(u32)),
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};
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/* Branch clocks are only on/off */
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if (clk->branch)
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rate = !!rate;
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req.value = cpu_to_le32(rate);
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return qcom_rpm_smd_write(icc_smd_rpm,
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ctx,
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clk->resource_type,
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clk->clock_id,
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&req, sizeof(req));
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}
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EXPORT_SYMBOL_GPL(qcom_icc_rpm_set_bus_rate);
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static int qcom_icc_rpm_smd_remove(struct platform_device *pdev)
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{
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icc_smd_rpm = NULL;
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return 0;
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}
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static int qcom_icc_rpm_smd_probe(struct platform_device *pdev)
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{
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icc_smd_rpm = dev_get_drvdata(pdev->dev.parent);
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if (!icc_smd_rpm) {
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dev_err(&pdev->dev, "unable to retrieve handle to RPM\n");
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return -ENODEV;
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}
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return 0;
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}
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static struct platform_driver qcom_interconnect_rpm_smd_driver = {
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.driver = {
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.name = "icc_smd_rpm",
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},
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.probe = qcom_icc_rpm_smd_probe,
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.remove = qcom_icc_rpm_smd_remove,
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};
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module_platform_driver(qcom_interconnect_rpm_smd_driver);
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MODULE_AUTHOR("Georgi Djakov <georgi.djakov@linaro.org>");
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MODULE_DESCRIPTION("Qualcomm SMD RPM interconnect proxy driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:icc_smd_rpm");
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