^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2017, Linaro Ltd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mailbox_controller.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define QCOM_APCS_IPC_BITS 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct qcom_apcs_ipc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct mbox_controller mbox;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct mbox_chan mbox_chans[QCOM_APCS_IPC_BITS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) unsigned long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct platform_device *clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct qcom_apcs_ipc_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) char *clk_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static const struct qcom_apcs_ipc_data ipq6018_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .offset = 8, .clk_name = "qcom,apss-ipq6018-clk"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static const struct qcom_apcs_ipc_data ipq8074_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) .offset = 8, .clk_name = NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static const struct qcom_apcs_ipc_data msm8916_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .offset = 8, .clk_name = "qcom-apcs-msm8916-clk"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static const struct qcom_apcs_ipc_data msm8994_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) .offset = 8, .clk_name = NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static const struct qcom_apcs_ipc_data msm8996_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .offset = 16, .clk_name = NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static const struct qcom_apcs_ipc_data msm8998_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .offset = 8, .clk_name = NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static const struct qcom_apcs_ipc_data sdm660_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .offset = 8, .clk_name = NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static const struct qcom_apcs_ipc_data apps_shared_apcs_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .offset = 12, .clk_name = NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static const struct regmap_config apcs_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) .reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .reg_stride = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .max_register = 0xFFC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .fast_io = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int qcom_apcs_ipc_send_data(struct mbox_chan *chan, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct qcom_apcs_ipc *apcs = container_of(chan->mbox,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct qcom_apcs_ipc, mbox);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) unsigned long idx = (unsigned long)chan->con_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return regmap_write(apcs->regmap, apcs->offset, BIT(idx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static const struct mbox_chan_ops qcom_apcs_ipc_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .send_data = qcom_apcs_ipc_send_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static int qcom_apcs_ipc_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct qcom_apcs_ipc *apcs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) const struct qcom_apcs_ipc_data *apcs_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned long i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) apcs = devm_kzalloc(&pdev->dev, sizeof(*apcs), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (!apcs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) base = devm_ioremap_resource(&pdev->dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (IS_ERR(base))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return PTR_ERR(base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) regmap = devm_regmap_init_mmio(&pdev->dev, base, &apcs_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (IS_ERR(regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) apcs_data = of_device_get_match_data(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) apcs->regmap = regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) apcs->offset = apcs_data->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /* Initialize channel identifiers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) for (i = 0; i < ARRAY_SIZE(apcs->mbox_chans); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) apcs->mbox_chans[i].con_priv = (void *)i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) apcs->mbox.dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) apcs->mbox.ops = &qcom_apcs_ipc_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) apcs->mbox.chans = apcs->mbox_chans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) apcs->mbox.num_chans = ARRAY_SIZE(apcs->mbox_chans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) ret = devm_mbox_controller_register(&pdev->dev, &apcs->mbox);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) dev_err(&pdev->dev, "failed to register APCS IPC controller\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (apcs_data->clk_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) apcs->clk = platform_device_register_data(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) apcs_data->clk_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) PLATFORM_DEVID_AUTO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (IS_ERR(apcs->clk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) dev_err(&pdev->dev, "failed to register APCS clk\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) platform_set_drvdata(pdev, apcs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static int qcom_apcs_ipc_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct qcom_apcs_ipc *apcs = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct platform_device *clk = apcs->clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) platform_device_unregister(clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /* .data is the offset of the ipc register within the global block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static const struct of_device_id qcom_apcs_ipc_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) { .compatible = "qcom,ipq6018-apcs-apps-global", .data = &ipq6018_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) { .compatible = "qcom,ipq8074-apcs-apps-global", .data = &ipq8074_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) { .compatible = "qcom,msm8916-apcs-kpss-global", .data = &msm8916_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) { .compatible = "qcom,msm8994-apcs-kpss-global", .data = &msm8994_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) { .compatible = "qcom,msm8996-apcs-hmss-global", .data = &msm8996_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) { .compatible = "qcom,msm8998-apcs-hmss-global", .data = &msm8998_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) { .compatible = "qcom,qcs404-apcs-apps-global", .data = &msm8916_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) { .compatible = "qcom,sc7180-apss-shared", .data = &apps_shared_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) { .compatible = "qcom,sdm660-apcs-hmss-global", .data = &sdm660_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) { .compatible = "qcom,sdm845-apss-shared", .data = &apps_shared_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) { .compatible = "qcom,sm8150-apss-shared", .data = &apps_shared_apcs_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) MODULE_DEVICE_TABLE(of, qcom_apcs_ipc_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static struct platform_driver qcom_apcs_ipc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .probe = qcom_apcs_ipc_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .remove = qcom_apcs_ipc_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .name = "qcom_apcs_ipc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .of_match_table = qcom_apcs_ipc_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int __init qcom_apcs_ipc_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return platform_driver_register(&qcom_apcs_ipc_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) postcore_initcall(qcom_apcs_ipc_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static void __exit qcom_apcs_ipc_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) platform_driver_unregister(&qcom_apcs_ipc_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) module_exit(qcom_apcs_ipc_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) MODULE_DESCRIPTION("Qualcomm APCS IPC driver");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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