diff options
Diffstat (limited to 'rr-cache/81697f2931f148d514dd5b7b80372c995622e2be/preimage')
| -rw-r--r-- | rr-cache/81697f2931f148d514dd5b7b80372c995622e2be/preimage | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/rr-cache/81697f2931f148d514dd5b7b80372c995622e2be/preimage b/rr-cache/81697f2931f148d514dd5b7b80372c995622e2be/preimage new file mode 100644 index 0000000..e216e56 --- /dev/null +++ b/rr-cache/81697f2931f148d514dd5b7b80372c995622e2be/preimage @@ -0,0 +1,161 @@ +// 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; +}; + +static const struct regmap_config apcs_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0xFFC, + .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; + struct regmap *regmap; + struct resource *res; + unsigned long offset; + void __iomem *base; + unsigned long i; + int ret; + const struct of_device_id apcs_clk_match_table[] = { + { .compatible = "qcom,msm8916-apcs-kpss-global", }, + { .compatible = "qcom,qcs404-apcs-apps-global", }, + {} + }; + + apcs = devm_kzalloc(&pdev->dev, sizeof(*apcs), GFP_KERNEL); + if (!apcs) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(&pdev->dev, res); + 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); + + offset = (unsigned long)of_device_get_match_data(&pdev->dev); + + apcs->regmap = regmap; + apcs->offset = 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; + } + + platform_set_drvdata(pdev, apcs); + + if (of_device_is_compatible(np, "qcom,msm8916-apcs-kpss-global") || + of_device_is_compatible(np, "qcom,qcs404-apcs-apps-global")) { + + apcs->clk = platform_device_register_data(&pdev->dev, + "qcom-apcs-msm8916-clk", + PLATFORM_DEVID_NONE, + NULL, 0); + if (IS_ERR(apcs->clk)) + dev_err(&pdev->dev, "failed to register APCS clk\n"); + } + + 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,msm8916-apcs-kpss-global", .data = (void *)8 }, + { .compatible = "qcom,msm8996-apcs-hmss-global", .data = (void *)16 }, + { .compatible = "qcom,msm8998-apcs-hmss-global", .data = (void *)8 }, + { .compatible = "qcom,qcs404-apcs-apps-global", .data = (void *)8 }, + { .compatible = "qcom,sc7180-apss-shared", .data = (void *)12 }, + { .compatible = "qcom,sdm845-apss-shared", .data = (void *)12 }, + { .compatible = "qcom,sm8150-apss-shared", .data = (void *)12 }, +<<<<<<< +======= + { .compatible = "qcom,ipq8074-apcs-apps-global", .data = (void *)8 }, +>>>>>>> + {} +}; +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"); |