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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
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/* Driver for Realtek PCI-Express card reader
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*
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* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Micky Ching <micky_ching@realsil.com.cn>
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*/
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#include <linux/mfd/rtsx_pci.h>
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#include "rtsx_pcr.h"
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int rtsx_gops_pm_reset(struct rtsx_pcr *pcr)
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{
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int err;
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/* init aspm */
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rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0xFF, 0x00);
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err = rtsx_pci_update_cfg_byte(pcr, LCTLR, ~LCTLR_ASPM_CTL_MASK, 0x00);
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if (err < 0)
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return err;
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/* reset PM_CTRL3 before send buffer cmd */
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return rtsx_pci_write_register(pcr, PM_CTRL3, D3_DELINK_MODE_EN, 0x00);
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}
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