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misc: rtsx: rts522a rts5228 rts5261 support Runtime PM

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rts522a, rts5228, rts5261
add extra init flow for rtd3
add more power_down setting for avoid being woken up
by plugging or unplugging card when system in S3

Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/dace32f573a445908fec0a10482c394c@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ricky WU
2022-02-21 11:20:29 +00:00
committed by Greg Kroah-Hartman
parent f4e335f345
commit 86f4c65fd5
4 changed files with 98 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/misc/cardreader/rts5228.c
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@@ -102,6 +102,14 @@ static void rts5228_force_power_down(struct rtsx_pcr *pcr, u8 pm_state, bool run
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3,
D3_DELINK_MODE_EN, D3_DELINK_MODE_EN);
if (!runtime) {
rtsx_pci_write_register(pcr, RTS5228_AUTOLOAD_CFG1,
CD_RESUME_EN_MASK, 0);
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
}
rtsx_pci_write_register(pcr, FPDCTL,
SSC_POWER_DOWN, SSC_POWER_DOWN);
}
@@ -480,9 +488,18 @@ static int rts5228_extra_init_hw(struct rtsx_pcr *pcr)
FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_HIGH);
rtsx_pci_write_register(pcr, PWD_SUSPEND_EN, 0xFF, 0xFB);
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x10, 0x00);
if (pcr->rtd3_en) {
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x01);
rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
FORCE_PM_CONTROL | FORCE_PM_VALUE,
FORCE_PM_CONTROL | FORCE_PM_VALUE);
} else {
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
}
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, D3_DELINK_MODE_EN, 0x00);
return 0;
}