mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Bhupesh Sharma](/assets/img/avatar_default.png)
Enable SM4250 APCS IPC support by adding the compatible. It reuses msm8994_apcs_data. Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
190 lines
5.6 KiB
C
190 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (c) 2017, Linaro Ltd
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/io.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/mailbox_controller.h>
|
|
|
|
#define QCOM_APCS_IPC_BITS 32
|
|
|
|
struct qcom_apcs_ipc {
|
|
struct mbox_controller mbox;
|
|
struct mbox_chan mbox_chans[QCOM_APCS_IPC_BITS];
|
|
|
|
struct regmap *regmap;
|
|
unsigned long offset;
|
|
struct platform_device *clk;
|
|
};
|
|
|
|
struct qcom_apcs_ipc_data {
|
|
int offset;
|
|
char *clk_name;
|
|
};
|
|
|
|
static const struct qcom_apcs_ipc_data ipq6018_apcs_data = {
|
|
.offset = 8, .clk_name = "qcom,apss-ipq6018-clk"
|
|
};
|
|
|
|
static const struct qcom_apcs_ipc_data msm8916_apcs_data = {
|
|
.offset = 8, .clk_name = "qcom-apcs-msm8916-clk"
|
|
};
|
|
|
|
static const struct qcom_apcs_ipc_data msm8994_apcs_data = {
|
|
.offset = 8, .clk_name = NULL
|
|
};
|
|
|
|
static const struct qcom_apcs_ipc_data msm8996_apcs_data = {
|
|
.offset = 16, .clk_name = NULL
|
|
};
|
|
|
|
static const struct qcom_apcs_ipc_data apps_shared_apcs_data = {
|
|
.offset = 12, .clk_name = NULL
|
|
};
|
|
|
|
static const struct qcom_apcs_ipc_data sdx55_apcs_data = {
|
|
.offset = 0x1008, .clk_name = "qcom-sdx55-acps-clk"
|
|
};
|
|
|
|
static const struct regmap_config apcs_regmap_config = {
|
|
.reg_bits = 32,
|
|
.reg_stride = 4,
|
|
.val_bits = 32,
|
|
.max_register = 0x1008,
|
|
.fast_io = true,
|
|
};
|
|
|
|
static int qcom_apcs_ipc_send_data(struct mbox_chan *chan, void *data)
|
|
{
|
|
struct qcom_apcs_ipc *apcs = container_of(chan->mbox,
|
|
struct qcom_apcs_ipc, mbox);
|
|
unsigned long idx = (unsigned long)chan->con_priv;
|
|
|
|
return regmap_write(apcs->regmap, apcs->offset, BIT(idx));
|
|
}
|
|
|
|
static const struct mbox_chan_ops qcom_apcs_ipc_ops = {
|
|
.send_data = qcom_apcs_ipc_send_data,
|
|
};
|
|
|
|
static int qcom_apcs_ipc_probe(struct platform_device *pdev)
|
|
{
|
|
struct qcom_apcs_ipc *apcs;
|
|
const struct qcom_apcs_ipc_data *apcs_data;
|
|
struct regmap *regmap;
|
|
void __iomem *base;
|
|
unsigned long i;
|
|
int ret;
|
|
|
|
apcs = devm_kzalloc(&pdev->dev, sizeof(*apcs), GFP_KERNEL);
|
|
if (!apcs)
|
|
return -ENOMEM;
|
|
|
|
base = devm_platform_ioremap_resource(pdev, 0);
|
|
if (IS_ERR(base))
|
|
return PTR_ERR(base);
|
|
|
|
regmap = devm_regmap_init_mmio(&pdev->dev, base, &apcs_regmap_config);
|
|
if (IS_ERR(regmap))
|
|
return PTR_ERR(regmap);
|
|
|
|
apcs_data = of_device_get_match_data(&pdev->dev);
|
|
|
|
apcs->regmap = regmap;
|
|
apcs->offset = apcs_data->offset;
|
|
|
|
/* Initialize channel identifiers */
|
|
for (i = 0; i < ARRAY_SIZE(apcs->mbox_chans); i++)
|
|
apcs->mbox_chans[i].con_priv = (void *)i;
|
|
|
|
apcs->mbox.dev = &pdev->dev;
|
|
apcs->mbox.ops = &qcom_apcs_ipc_ops;
|
|
apcs->mbox.chans = apcs->mbox_chans;
|
|
apcs->mbox.num_chans = ARRAY_SIZE(apcs->mbox_chans);
|
|
|
|
ret = devm_mbox_controller_register(&pdev->dev, &apcs->mbox);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to register APCS IPC controller\n");
|
|
return ret;
|
|
}
|
|
|
|
if (apcs_data->clk_name) {
|
|
apcs->clk = platform_device_register_data(&pdev->dev,
|
|
apcs_data->clk_name,
|
|
PLATFORM_DEVID_AUTO,
|
|
NULL, 0);
|
|
if (IS_ERR(apcs->clk))
|
|
dev_err(&pdev->dev, "failed to register APCS clk\n");
|
|
}
|
|
|
|
platform_set_drvdata(pdev, apcs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qcom_apcs_ipc_remove(struct platform_device *pdev)
|
|
{
|
|
struct qcom_apcs_ipc *apcs = platform_get_drvdata(pdev);
|
|
struct platform_device *clk = apcs->clk;
|
|
|
|
platform_device_unregister(clk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* .data is the offset of the ipc register within the global block */
|
|
static const struct of_device_id qcom_apcs_ipc_of_match[] = {
|
|
{ .compatible = "qcom,ipq6018-apcs-apps-global", .data = &ipq6018_apcs_data },
|
|
{ .compatible = "qcom,ipq8074-apcs-apps-global", .data = &ipq6018_apcs_data },
|
|
{ .compatible = "qcom,msm8916-apcs-kpss-global", .data = &msm8916_apcs_data },
|
|
{ .compatible = "qcom,msm8939-apcs-kpss-global", .data = &msm8916_apcs_data },
|
|
{ .compatible = "qcom,msm8953-apcs-kpss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,msm8976-apcs-kpss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,msm8994-apcs-kpss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,msm8996-apcs-hmss-global", .data = &msm8996_apcs_data },
|
|
{ .compatible = "qcom,msm8998-apcs-hmss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,qcm2290-apcs-hmss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,qcs404-apcs-apps-global", .data = &msm8916_apcs_data },
|
|
{ .compatible = "qcom,sc7180-apss-shared", .data = &apps_shared_apcs_data },
|
|
{ .compatible = "qcom,sc8180x-apss-shared", .data = &apps_shared_apcs_data },
|
|
{ .compatible = "qcom,sdm660-apcs-hmss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,sdm845-apss-shared", .data = &apps_shared_apcs_data },
|
|
{ .compatible = "qcom,sm4250-apcs-hmss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,sm6125-apcs-hmss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,sm8150-apss-shared", .data = &apps_shared_apcs_data },
|
|
{ .compatible = "qcom,sm6115-apcs-hmss-global", .data = &msm8994_apcs_data },
|
|
{ .compatible = "qcom,sdx55-apcs-gcc", .data = &sdx55_apcs_data },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, qcom_apcs_ipc_of_match);
|
|
|
|
static struct platform_driver qcom_apcs_ipc_driver = {
|
|
.probe = qcom_apcs_ipc_probe,
|
|
.remove = qcom_apcs_ipc_remove,
|
|
.driver = {
|
|
.name = "qcom_apcs_ipc",
|
|
.of_match_table = qcom_apcs_ipc_of_match,
|
|
},
|
|
};
|
|
|
|
static int __init qcom_apcs_ipc_init(void)
|
|
{
|
|
return platform_driver_register(&qcom_apcs_ipc_driver);
|
|
}
|
|
postcore_initcall(qcom_apcs_ipc_init);
|
|
|
|
static void __exit qcom_apcs_ipc_exit(void)
|
|
{
|
|
platform_driver_unregister(&qcom_apcs_ipc_driver);
|
|
}
|
|
module_exit(qcom_apcs_ipc_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("Qualcomm APCS IPC driver");
|