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>

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);
 }

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);
 }

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);
 }

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);
 }

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);
 }

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)

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};