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mfd: rtsx: Fix PM suspend for 5227 & 5249

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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>
This commit is contained in:
Micky Ching 2014-10-10 13:58:44 +08:00 committed by Lee Jones
parent 130dd5b039
commit 5cb5d9616a
6 changed files with 79 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mfd/Makefile
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@ -13,7 +13,7 @@ obj-$(CONFIG_MFD_CROS_EC) += cros_ec.o
obj-$(CONFIG_MFD_CROS_EC_I2C) += cros_ec_i2c.o
obj-$(CONFIG_MFD_CROS_EC_SPI) += cros_ec_spi.o
rtsx_pci-objs := rtsx_pcr.o rts5209.o rts5229.o rtl8411.o rts5227.o rts5249.o
rtsx_pci-objs := rtsx_pcr.o rtsx_gops.o rts5209.o rts5229.o rtl8411.o rts5227.o rts5249.o
obj-$(CONFIG_MFD_RTSX_PCI) += rtsx_pci.o
obj-$(CONFIG_MFD_RTSX_USB) += rtsx_usb.o

6
drivers/mfd/rts5227.c
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@ -130,6 +130,12 @@ static int rts5227_extra_init_hw(struct rtsx_pcr *pcr)
static int rts5227_optimize_phy(struct rtsx_pcr *pcr)
{
int err;
err = rtsx_gops_pm_reset(pcr);
if (err < 0)
return err;
/* Optimize RX sensitivity */
return rtsx_pci_write_phy_register(pcr, 0x00, 0xBA42);
}

4
drivers/mfd/rts5249.c
View File

@ -130,6 +130,10 @@ static int rts5249_optimize_phy(struct rtsx_pcr *pcr)
{
int err;
err = rtsx_gops_pm_reset(pcr);
if (err < 0)
return err;
err = rtsx_pci_write_phy_register(pcr, PHY_REG_REV,
PHY_REG_REV_RESV | PHY_REG_REV_RXIDLE_LATCHED |
PHY_REG_REV_P1_EN | PHY_REG_REV_RXIDLE_EN |

37
drivers/mfd/rtsx_gops.c Normal file
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@ -0,0 +1,37 @@
/* 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);
}

3
drivers/mfd/rtsx_pcr.h
View File

@ -72,4 +72,7 @@ do { \
pcr->ms_pull_ctl_disable_tbl = __device##_ms_pull_ctl_disable_tbl; \
} while (0)
/* generic operations */
int rtsx_gops_pm_reset(struct rtsx_pcr *pcr);
#endif

28
include/linux/mfd/rtsx_pci.h
View File

@ -707,6 +707,14 @@
#define PM_CTRL1 0xFF44
#define PM_CTRL2 0xFF45
#define PM_CTRL3 0xFF46
#define SDIO_SEND_PME_EN 0x80
#define FORCE_RC_MODE_ON 0x40
#define FORCE_RX50_LINK_ON 0x20
#define D3_DELINK_MODE_EN 0x10
#define USE_PESRTB_CTL_DELINK 0x08
#define DELAY_PIN_WAKE 0x04
#define RESET_PIN_WAKE 0x02
#define PM_WAKE_EN 0x01
#define PM_CTRL4 0xFF47
/* Memory mapping */
@ -752,6 +760,14 @@
#define PHY_DUM_REG 0x1F
#define LCTLR 0x80
#define LCTLR_EXT_SYNC 0x80
#define LCTLR_COMMON_CLOCK_CFG 0x40
#define LCTLR_RETRAIN_LINK 0x20
#define LCTLR_LINK_DISABLE 0x10
#define LCTLR_RCB 0x08
#define LCTLR_RESERVED 0x04
#define LCTLR_ASPM_CTL_MASK 0x03
#define PCR_SETTING_REG1 0x724
#define PCR_SETTING_REG2 0x814
#define PCR_SETTING_REG3 0x747
@ -967,4 +983,16 @@ static inline u8 *rtsx_pci_get_cmd_data(struct rtsx_pcr *pcr)
return (u8 *)(pcr->host_cmds_ptr);
}
static inline int rtsx_pci_update_cfg_byte(struct rtsx_pcr *pcr, int addr,
u8 mask, u8 append)
{
int err;
u8 val;
err = pci_read_config_byte(pcr->pci, addr, &val);
if (err < 0)
return err;
return pci_write_config_byte(pcr->pci, addr, (val & mask) | append);
}
#endif