From: Micky Ching <micky_ching@xxxxxxxxxxxxxx>
Fix rts5249 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@xxxxxxxxxxxxxx>
---
drivers/mfd/rts5249.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/mfd/rts5249.c b/drivers/mfd/rts5249.c
index 573de7b..5dd7dc0 100644
--- a/drivers/mfd/rts5249.c
+++ b/drivers/mfd/rts5249.c
@@ -126,10 +126,27 @@ static int rts5249_extra_init_hw(struct rtsx_pcr *pcr)
return rtsx_pci_send_cmd(pcr, 100);
}
+static int rts5249_pm_reset(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ /* init aspm */
+ err = rtsx_pci_update_cfg_byte(pcr, LCTLR, 0xFC, 0);
+ if (err < 0)
+ return err;
+
+ /* reset PM_CTRL3 before send buffer cmd */
+ return rtsx_pci_write_register(pcr, PM_CTRL3, 0x10, 0x00);
+}
+
static int rts5249_optimize_phy(struct rtsx_pcr *pcr)
{
int err;
+ err = rts5249_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 |
--
1.7.9.5
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