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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-08-06 12:15:09 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-08-08 07:52:01 +0200
commit71ed79b0e4be0db254640c3beb9a1a0316eb5f61 (patch)
treeaac2f4f0527802478b29c2e7897e56994b6ad759 /drivers/usb/host/whci/init.c
parent7d9c1d2f7aca2651b3821947bf928ee131df102a (diff)
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USB: Move wusbcore and UWB to staging as it is obsolete
The UWB and wusbcore code is long obsolete, so let us just move the code out of the real part of the kernel and into the drivers/staging/ location with plans to remove it entirely in a few releases. Link: https://lore.kernel.org/r/20190806101509.GA11280@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/whci/init.c')
-rw-r--r--drivers/usb/host/whci/init.c177
1 files changed, 0 insertions, 177 deletions
diff --git a/drivers/usb/host/whci/init.c b/drivers/usb/host/whci/init.c
deleted file mode 100644
index 82416973f773..000000000000
--- a/drivers/usb/host/whci/init.c
+++ /dev/null
@@ -1,177 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Wireless Host Controller (WHC) initialization.
- *
- * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
- */
-#include <linux/kernel.h>
-#include <linux/gfp.h>
-#include <linux/dma-mapping.h>
-#include <linux/uwb/umc.h>
-
-#include "../../wusbcore/wusbhc.h"
-
-#include "whcd.h"
-
-/*
- * Reset the host controller.
- */
-static void whc_hw_reset(struct whc *whc)
-{
- le_writel(WUSBCMD_WHCRESET, whc->base + WUSBCMD);
- whci_wait_for(&whc->umc->dev, whc->base + WUSBCMD, WUSBCMD_WHCRESET, 0,
- 100, "reset");
-}
-
-static void whc_hw_init_di_buf(struct whc *whc)
-{
- int d;
-
- /* Disable all entries in the Device Information buffer. */
- for (d = 0; d < whc->n_devices; d++)
- whc->di_buf[d].addr_sec_info = WHC_DI_DISABLE;
-
- le_writeq(whc->di_buf_dma, whc->base + WUSBDEVICEINFOADDR);
-}
-
-static void whc_hw_init_dn_buf(struct whc *whc)
-{
- /* Clear the Device Notification buffer to ensure the V (valid)
- * bits are clear. */
- memset(whc->dn_buf, 0, 4096);
-
- le_writeq(whc->dn_buf_dma, whc->base + WUSBDNTSBUFADDR);
-}
-
-int whc_init(struct whc *whc)
-{
- u32 whcsparams;
- int ret, i;
- resource_size_t start, len;
-
- spin_lock_init(&whc->lock);
- mutex_init(&whc->mutex);
- init_waitqueue_head(&whc->cmd_wq);
- init_waitqueue_head(&whc->async_list_wq);
- init_waitqueue_head(&whc->periodic_list_wq);
- whc->workqueue = alloc_ordered_workqueue(dev_name(&whc->umc->dev), 0);
- if (whc->workqueue == NULL) {
- ret = -ENOMEM;
- goto error;
- }
- INIT_WORK(&whc->dn_work, whc_dn_work);
-
- INIT_WORK(&whc->async_work, scan_async_work);
- INIT_LIST_HEAD(&whc->async_list);
- INIT_LIST_HEAD(&whc->async_removed_list);
-
- INIT_WORK(&whc->periodic_work, scan_periodic_work);
- for (i = 0; i < 5; i++)
- INIT_LIST_HEAD(&whc->periodic_list[i]);
- INIT_LIST_HEAD(&whc->periodic_removed_list);
-
- /* Map HC registers. */
- start = whc->umc->resource.start;
- len = whc->umc->resource.end - start + 1;
- if (!request_mem_region(start, len, "whci-hc")) {
- dev_err(&whc->umc->dev, "can't request HC region\n");
- ret = -EBUSY;
- goto error;
- }
- whc->base_phys = start;
- whc->base = ioremap(start, len);
- if (!whc->base) {
- dev_err(&whc->umc->dev, "ioremap\n");
- ret = -ENOMEM;
- goto error;
- }
-
- whc_hw_reset(whc);
-
- /* Read maximum number of devices, keys and MMC IEs. */
- whcsparams = le_readl(whc->base + WHCSPARAMS);
- whc->n_devices = WHCSPARAMS_TO_N_DEVICES(whcsparams);
- whc->n_keys = WHCSPARAMS_TO_N_KEYS(whcsparams);
- whc->n_mmc_ies = WHCSPARAMS_TO_N_MMC_IES(whcsparams);
-
- dev_dbg(&whc->umc->dev, "N_DEVICES = %d, N_KEYS = %d, N_MMC_IES = %d\n",
- whc->n_devices, whc->n_keys, whc->n_mmc_ies);
-
- whc->qset_pool = dma_pool_create("qset", &whc->umc->dev,
- sizeof(struct whc_qset), 64, 0);
- if (whc->qset_pool == NULL) {
- ret = -ENOMEM;
- goto error;
- }
-
- ret = asl_init(whc);
- if (ret < 0)
- goto error;
- ret = pzl_init(whc);
- if (ret < 0)
- goto error;
-
- /* Allocate and initialize a buffer for generic commands, the
- Device Information buffer, and the Device Notification
- buffer. */
-
- whc->gen_cmd_buf = dma_alloc_coherent(&whc->umc->dev, WHC_GEN_CMD_DATA_LEN,
- &whc->gen_cmd_buf_dma, GFP_KERNEL);
- if (whc->gen_cmd_buf == NULL) {
- ret = -ENOMEM;
- goto error;
- }
-
- whc->dn_buf = dma_alloc_coherent(&whc->umc->dev,
- sizeof(struct dn_buf_entry) * WHC_N_DN_ENTRIES,
- &whc->dn_buf_dma, GFP_KERNEL);
- if (!whc->dn_buf) {
- ret = -ENOMEM;
- goto error;
- }
- whc_hw_init_dn_buf(whc);
-
- whc->di_buf = dma_alloc_coherent(&whc->umc->dev,
- sizeof(struct di_buf_entry) * whc->n_devices,
- &whc->di_buf_dma, GFP_KERNEL);
- if (!whc->di_buf) {
- ret = -ENOMEM;
- goto error;
- }
- whc_hw_init_di_buf(whc);
-
- return 0;
-
-error:
- whc_clean_up(whc);
- return ret;
-}
-
-void whc_clean_up(struct whc *whc)
-{
- resource_size_t len;
-
- if (whc->di_buf)
- dma_free_coherent(&whc->umc->dev, sizeof(struct di_buf_entry) * whc->n_devices,
- whc->di_buf, whc->di_buf_dma);
- if (whc->dn_buf)
- dma_free_coherent(&whc->umc->dev, sizeof(struct dn_buf_entry) * WHC_N_DN_ENTRIES,
- whc->dn_buf, whc->dn_buf_dma);
- if (whc->gen_cmd_buf)
- dma_free_coherent(&whc->umc->dev, WHC_GEN_CMD_DATA_LEN,
- whc->gen_cmd_buf, whc->gen_cmd_buf_dma);
-
- pzl_clean_up(whc);
- asl_clean_up(whc);
-
- dma_pool_destroy(whc->qset_pool);
-
- len = resource_size(&whc->umc->resource);
- if (whc->base)
- iounmap(whc->base);
- if (whc->base_phys)
- release_mem_region(whc->base_phys, len);
-
- if (whc->workqueue)
- destroy_workqueue(whc->workqueue);
-}
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