scsi: ufs: Split the drivers/scsi/ufs directory

Split the drivers/scsi/ufs directory into 'core' and 'host' directories
under the drivers/ufs/ directory. Move shared header files into the
include/ufs/ directory. This separation makes it clear which header files
UFS drivers are allowed to include (include/ufs/*.h) and which header files
UFS drivers are not allowed to include (drivers/ufs/core/*.h).

Update the MAINTAINERS file. Add myself as a UFS reviewer.

Link: https://lore.kernel.org/r/20220511212552.655341-1-bvanassche@acm.org
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Bean Huo <beanhuo@micron.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Keoseong Park <keosung.park@samsung.com>
Tested-by: Bean Huo <beanhuo@micron.com>
Tested-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 0 insertions, 150 deletions

diff --git a/drivers/scsi/ufs/ufshcd-dwc.c b/drivers/scsi/ufs/ufshcd-dwc.c
deleted file mode 100644
index a57973c8d2a1..000000000000
--- a/drivers/scsi/ufs/ufshcd-dwc.c
+++ /dev/null
@@ -1,150 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * UFS Host driver for Synopsys Designware Core
- *
- * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
- *
- * Authors: Joao Pinto <jpinto@synopsys.com>
- */
-
-#include <linux/module.h>
-
-#include "ufshcd.h"
-#include "unipro.h"
-
-#include "ufshcd-dwc.h"
-#include "ufshci-dwc.h"
-
-int ufshcd_dwc_dme_set_attrs(struct ufs_hba *hba,
-				const struct ufshcd_dme_attr_val *v, int n)
-{
-	int ret = 0;
-	int attr_node = 0;
-
-	for (attr_node = 0; attr_node < n; attr_node++) {
-		ret = ufshcd_dme_set_attr(hba, v[attr_node].attr_sel,
-			ATTR_SET_NOR, v[attr_node].mib_val, v[attr_node].peer);
-
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(ufshcd_dwc_dme_set_attrs);
-
-/**
- * ufshcd_dwc_program_clk_div()
- * This function programs the clk divider value. This value is needed to
- * provide 1 microsecond tick to unipro layer.
- * @hba: Private Structure pointer
- * @divider_val: clock divider value to be programmed
- *
- */
-static void ufshcd_dwc_program_clk_div(struct ufs_hba *hba, u32 divider_val)
-{
-	ufshcd_writel(hba, divider_val, DWC_UFS_REG_HCLKDIV);
-}
-
-/**
- * ufshcd_dwc_link_is_up()
- * Check if link is up
- * @hba: private structure pointer
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_dwc_link_is_up(struct ufs_hba *hba)
-{
-	int dme_result = 0;
-
-	ufshcd_dme_get(hba, UIC_ARG_MIB(VS_POWERSTATE), &dme_result);
-
-	if (dme_result == UFSHCD_LINK_IS_UP) {
-		ufshcd_set_link_active(hba);
-		return 0;
-	}
-
-	return 1;
-}
-
-/**
- * ufshcd_dwc_connection_setup()
- * This function configures both the local side (host) and the peer side
- * (device) unipro attributes to establish the connection to application/
- * cport.
- * This function is not required if the hardware is properly configured to
- * have this connection setup on reset. But invoking this function does no
- * harm and should be fine even working with any ufs device.
- *
- * @hba: pointer to drivers private data
- *
- * Returns 0 on success non-zero value on failure
- */
-static int ufshcd_dwc_connection_setup(struct ufs_hba *hba)
-{
-	static const struct ufshcd_dme_attr_val setup_attrs[] = {
-		{ UIC_ARG_MIB(T_CONNECTIONSTATE), 0, DME_LOCAL },
-		{ UIC_ARG_MIB(N_DEVICEID), 0, DME_LOCAL },
-		{ UIC_ARG_MIB(N_DEVICEID_VALID), 0, DME_LOCAL },
-		{ UIC_ARG_MIB(T_PEERDEVICEID), 1, DME_LOCAL },
-		{ UIC_ARG_MIB(T_PEERCPORTID), 0, DME_LOCAL },
-		{ UIC_ARG_MIB(T_TRAFFICCLASS), 0, DME_LOCAL },
-		{ UIC_ARG_MIB(T_CPORTFLAGS), 0x6, DME_LOCAL },
-		{ UIC_ARG_MIB(T_CPORTMODE), 1, DME_LOCAL },
-		{ UIC_ARG_MIB(T_CONNECTIONSTATE), 1, DME_LOCAL },
-		{ UIC_ARG_MIB(T_CONNECTIONSTATE), 0, DME_PEER },
-		{ UIC_ARG_MIB(N_DEVICEID), 1, DME_PEER },
-		{ UIC_ARG_MIB(N_DEVICEID_VALID), 1, DME_PEER },
-		{ UIC_ARG_MIB(T_PEERDEVICEID), 1, DME_PEER },
-		{ UIC_ARG_MIB(T_PEERCPORTID), 0, DME_PEER },
-		{ UIC_ARG_MIB(T_TRAFFICCLASS), 0, DME_PEER },
-		{ UIC_ARG_MIB(T_CPORTFLAGS), 0x6, DME_PEER },
-		{ UIC_ARG_MIB(T_CPORTMODE), 1, DME_PEER },
-		{ UIC_ARG_MIB(T_CONNECTIONSTATE), 1, DME_PEER }
-	};
-
-	return ufshcd_dwc_dme_set_attrs(hba, setup_attrs, ARRAY_SIZE(setup_attrs));
-}
-
-/**
- * ufshcd_dwc_link_startup_notify()
- * UFS Host DWC specific link startup sequence
- * @hba: private structure pointer
- * @status: Callback notify status
- *
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_dwc_link_startup_notify(struct ufs_hba *hba,
-					enum ufs_notify_change_status status)
-{
-	int err = 0;
-
-	if (status == PRE_CHANGE) {
-		ufshcd_dwc_program_clk_div(hba, DWC_UFS_REG_HCLKDIV_DIV_125);
-
-		err = ufshcd_vops_phy_initialization(hba);
-		if (err) {
-			dev_err(hba->dev, "Phy setup failed (%d)\n", err);
-			goto out;
-		}
-	} else { /* POST_CHANGE */
-		err = ufshcd_dwc_link_is_up(hba);
-		if (err) {
-			dev_err(hba->dev, "Link is not up\n");
-			goto out;
-		}
-
-		err = ufshcd_dwc_connection_setup(hba);
-		if (err)
-			dev_err(hba->dev, "Connection setup failed (%d)\n",
-									err);
-	}
-
-out:
-	return err;
-}
-EXPORT_SYMBOL(ufshcd_dwc_link_startup_notify);
-
-MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
-MODULE_DESCRIPTION("UFS Host driver for Synopsys Designware Core");
-MODULE_LICENSE("Dual BSD/GPL");