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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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17f5559e0d
WCN3990 is integrated 802.11ac chipset with SNOC bus interface. Add snoc layer driver registration and associated ops. WCN3990 support is not yet complete as cold-boot handshake is done using qmi(Qualcomm-MSM-Interface) and qmi client support will be added once qmi framework is available. Signed-off-by: Govind Singh <govinds@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
/*
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* Copyright (c) 2018 The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include "debug.h"
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#include "hif.h"
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#include "htc.h"
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#include "ce.h"
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#include "snoc.h"
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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static const struct ath10k_snoc_drv_priv drv_priv = {
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.hw_rev = ATH10K_HW_WCN3990,
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.dma_mask = DMA_BIT_MASK(37),
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};
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void ath10k_snoc_write32(struct ath10k *ar, u32 offset, u32 value)
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{
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struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
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iowrite32(value, ar_snoc->mem + offset);
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}
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u32 ath10k_snoc_read32(struct ath10k *ar, u32 offset)
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{
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struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
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u32 val;
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val = ioread32(ar_snoc->mem + offset);
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return val;
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}
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static const struct ath10k_hif_ops ath10k_snoc_hif_ops = {
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.read32 = ath10k_snoc_read32,
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.write32 = ath10k_snoc_write32,
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};
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static const struct ath10k_bus_ops ath10k_snoc_bus_ops = {
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.read32 = ath10k_snoc_read32,
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.write32 = ath10k_snoc_write32,
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};
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static const struct of_device_id ath10k_snoc_dt_match[] = {
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{ .compatible = "qcom,wcn3990-wifi",
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.data = &drv_priv,
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},
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{ }
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};
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MODULE_DEVICE_TABLE(of, ath10k_snoc_dt_match);
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static int ath10k_snoc_probe(struct platform_device *pdev)
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{
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const struct ath10k_snoc_drv_priv *drv_data;
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const struct of_device_id *of_id;
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struct ath10k_snoc *ar_snoc;
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struct device *dev;
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struct ath10k *ar;
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int ret;
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of_id = of_match_device(ath10k_snoc_dt_match, &pdev->dev);
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if (!of_id) {
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dev_err(&pdev->dev, "failed to find matching device tree id\n");
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return -EINVAL;
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}
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drv_data = of_id->data;
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dev = &pdev->dev;
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ret = dma_set_mask_and_coherent(dev, drv_data->dma_mask);
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if (ret) {
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dev_err(dev, "failed to set dma mask: %d", ret);
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return ret;
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}
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ar = ath10k_core_create(sizeof(*ar_snoc), dev, ATH10K_BUS_SNOC,
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drv_data->hw_rev, &ath10k_snoc_hif_ops);
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if (!ar) {
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dev_err(dev, "failed to allocate core\n");
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return -ENOMEM;
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}
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ar_snoc = ath10k_snoc_priv(ar);
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ar_snoc->dev = pdev;
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platform_set_drvdata(pdev, ar);
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ar_snoc->ar = ar;
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ar_snoc->ce.bus_ops = &ath10k_snoc_bus_ops;
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ar->ce_priv = &ar_snoc->ce;
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ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc probe\n");
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ath10k_warn(ar, "Warning: SNOC support is still work-in-progress, it will not work properly!");
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return ret;
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}
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static int ath10k_snoc_remove(struct platform_device *pdev)
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{
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struct ath10k *ar = platform_get_drvdata(pdev);
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ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc remove\n");
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ath10k_core_destroy(ar);
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return 0;
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}
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static struct platform_driver ath10k_snoc_driver = {
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.probe = ath10k_snoc_probe,
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.remove = ath10k_snoc_remove,
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.driver = {
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.name = "ath10k_snoc",
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.owner = THIS_MODULE,
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.of_match_table = ath10k_snoc_dt_match,
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},
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};
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static int __init ath10k_snoc_init(void)
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{
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int ret;
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ret = platform_driver_register(&ath10k_snoc_driver);
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if (ret)
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pr_err("failed to register ath10k snoc driver: %d\n",
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ret);
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return ret;
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}
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module_init(ath10k_snoc_init);
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static void __exit ath10k_snoc_exit(void)
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{
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platform_driver_unregister(&ath10k_snoc_driver);
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}
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module_exit(ath10k_snoc_exit);
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MODULE_AUTHOR("Qualcomm");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_DESCRIPTION("Driver support for Atheros WCN3990 SNOC devices");
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