5cb5d9616a
Fix rts5227&5249 failed send buffer cmd after suspend, PM_CTRL3 should reset before send any buffer cmd after suspend. Otherwise, buffer cmd will failed, this will lead resume fail. Signed-off-by: Micky Ching <micky_ching@realsil.com.cn> Signed-off-by: Lee Jones <lee.jones@linaro.org>
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* Driver for Realtek PCI-Express card reader
|
|
*
|
|
* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author:
|
|
* Micky Ching <micky_ching@realsil.com.cn>
|
|
*/
|
|
|
|
#include <linux/mfd/rtsx_pci.h>
|
|
#include "rtsx_pcr.h"
|
|
|
|
int rtsx_gops_pm_reset(struct rtsx_pcr *pcr)
|
|
{
|
|
int err;
|
|
|
|
/* init aspm */
|
|
rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0xFF, 0x00);
|
|
err = rtsx_pci_update_cfg_byte(pcr, LCTLR, ~LCTLR_ASPM_CTL_MASK, 0x00);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* reset PM_CTRL3 before send buffer cmd */
|
|
return rtsx_pci_write_register(pcr, PM_CTRL3, D3_DELINK_MODE_EN, 0x00);
|
|
}
|