diff options
Diffstat (limited to 'drivers/scsi/ufs/ufshcd-dwc.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd-dwc.c | 150 |
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"); |