mfd: rtsx: Configure to enter a deeper power-saving mode in S3

Set a bit to enable rts5227 and rts5249 to enter a deeper internal
power-saving mode in S3, and recover it after resuming.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

7 files changed, 15 insertions, 7 deletions

diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c
index d183fa002338..37367fb1c11b 100644
--- a/drivers/mfd/rtl8411.c
+++ b/drivers/mfd/rtl8411.c
@@ -86,7 +86,7 @@ static void rtl8411b_fetch_vendor_settings(struct rtsx_pcr *pcr)
                 map_sd_drive(rtl8411b_reg_to_sd30_drive_sel_3v3(reg));
 }
 
-static void rtl8411_force_power_down(struct rtsx_pcr *pcr)
+static void rtl8411_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
 {
         rtsx_pci_write_register(pcr, FPDCTL, 0x07, 0x07);
 }
diff --git a/drivers/mfd/rts5209.c b/drivers/mfd/rts5209.c
index 03a15f779ebb..ef6a59fe37a4 100644
--- a/drivers/mfd/rts5209.c
+++ b/drivers/mfd/rts5209.c
@@ -59,7 +59,7 @@ static void rts5209_fetch_vendor_settings(struct rtsx_pcr *pcr)
         }
 }
 
-static void rts5209_force_power_down(struct rtsx_pcr *pcr)
+static void rts5209_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
 {
         rtsx_pci_write_register(pcr, FPDCTL, 0x07, 0x07);
 }
diff --git a/drivers/mfd/rts5227.c b/drivers/mfd/rts5227.c
index 724ce4c54523..c72abd6b9c81 100644
--- a/drivers/mfd/rts5227.c
+++ b/drivers/mfd/rts5227.c
@@ -83,13 +83,16 @@ static void rts5227_fetch_vendor_settings(struct rtsx_pcr *pcr)
                 pcr->flags |= PCR_REVERSE_SOCKET;
 }
 
-static void rts5227_force_power_down(struct rtsx_pcr *pcr)
+static void rts5227_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
 {
         /* Set relink_time to 0 */
         rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, 0xFF, 0);
         rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, 0xFF, 0);
         rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 0x01, 0);
 
+        if (pm_state == HOST_ENTER_S3)
+                rtsx_pci_write_register(pcr, PM_CTRL3, 0x10, 0x10);
+
         rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03);
 }
 
@@ -123,6 +126,7 @@ static int rts5227_extra_init_hw(struct rtsx_pcr *pcr)
         else
                 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
                                 AUTOLOAD_CFG_BASE + 3, 0xB8, 0x88);
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CTRL3, 0x10, 0x00);
 
         return rtsx_pci_send_cmd(pcr, 100);
 }
diff --git a/drivers/mfd/rts5229.c b/drivers/mfd/rts5229.c
index e8261d7436a8..afb0f24bac71 100644
--- a/drivers/mfd/rts5229.c
+++ b/drivers/mfd/rts5229.c
@@ -56,7 +56,7 @@ static void rts5229_fetch_vendor_settings(struct rtsx_pcr *pcr)
                 map_sd_drive(rtsx_reg_to_sd30_drive_sel_3v3(reg));
 }
 
-static void rts5229_force_power_down(struct rtsx_pcr *pcr)
+static void rts5229_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
 {
         rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03);
 }
diff --git a/drivers/mfd/rts5249.c b/drivers/mfd/rts5249.c
index c5e54d7cf528..384b30b432bd 100644
--- a/drivers/mfd/rts5249.c
+++ b/drivers/mfd/rts5249.c
@@ -88,13 +88,16 @@ static void rts5249_fetch_vendor_settings(struct rtsx_pcr *pcr)
                 pcr->flags |= PCR_REVERSE_SOCKET;
 }
 
-static void rts5249_force_power_down(struct rtsx_pcr *pcr)
+static void rts5249_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
 {
         /* Set relink_time to 0 */
         rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, 0xFF, 0);
         rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, 0xFF, 0);
         rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 0x01, 0);
 
+        if (pm_state == HOST_ENTER_S3)
+                rtsx_pci_write_register(pcr, PM_CTRL3, 0x10, 0x10);
+
         rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03);
 }
 
@@ -119,6 +122,7 @@ static int rts5249_extra_init_hw(struct rtsx_pcr *pcr)
         else
                 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
                                 AUTOLOAD_CFG_BASE + 3, 0xB0, 0x80);
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CTRL3, 0x10, 0x00);
 
         return rtsx_pci_send_cmd(pcr, 100);
 }
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
index ffd393c06d34..29932a019fdf 100644
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -939,7 +939,7 @@ static void rtsx_pci_power_off(struct rtsx_pcr *pcr, u8 pm_state)
         rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, pm_state);
 
         if (pcr->ops->force_power_down)
-                pcr->ops->force_power_down(pcr);
+                pcr->ops->force_power_down(pcr, pm_state);
 }
 
 static int rtsx_pci_init_hw(struct rtsx_pcr *pcr)
diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
index 9a16276bc080..dd0bd5806adc 100644
--- a/include/linux/mfd/rtsx_pci.h
+++ b/include/linux/mfd/rtsx_pci.h
@@ -779,7 +779,7 @@ struct pcr_ops {
         unsigned int    (*cd_deglitch)(struct rtsx_pcr *pcr);
         int             (*conv_clk_and_div_n)(int clk, int dir);
         void            (*fetch_vendor_settings)(struct rtsx_pcr *pcr);
-        void            (*force_power_down)(struct rtsx_pcr *pcr);
+        void            (*force_power_down)(struct rtsx_pcr *pcr, u8 pm_state);
 };
 
 enum PDEV_STAT  {PDEV_STAT_IDLE, PDEV_STAT_RUN};