mfd: rtsx: Add shutdown callback in rtsx_pci_driver

Some actions to clear power state should be handled in .shutdown
callback in rtsx_pci_driver. This patch adopts the following measures to
catch this goal:
1. Add a function rtsx_pci_power_off to abstract the common ops in
.shutdown and .suspend
2. Add pcr->ops->force_power_down to fulfill the individual action for
each reader model

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

1 files changed, 11 insertions, 2 deletions

diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
index 9cba73703704..11ab786fdc83 100644
--- a/include/linux/mfd/rtsx_pci.h
+++ b/include/linux/mfd/rtsx_pci.h
@@ -25,8 +25,7 @@
 
 #include <linux/sched.h>
 #include <linux/pci.h>
-
-#include "rtsx_common.h"
+#include <linux/mfd/rtsx_common.h>
 
 #define MAX_RW_REG_CNT                  1024
 
@@ -536,6 +535,10 @@
 #define SAMPLE_VAR_CLK0                 (0x01 << 4)
 #define SAMPLE_VAR_CLK1                 (0x02 << 4)
 
+/* HOST_SLEEP_STATE */
+#define HOST_ENTER_S1                   1
+#define HOST_ENTER_S3                   2
+
 #define MS_CFG                          0xFD40
 #define MS_TPC                          0xFD41
 #define MS_TRANS_CFG                    0xFD42
@@ -701,6 +704,11 @@
 
 #define AUTOLOAD_CFG_BASE               0xFF00
 
+#define PM_CTRL1                        0xFF44
+#define PM_CTRL2                        0xFF45
+#define PM_CTRL3                        0xFF46
+#define PM_CTRL4                        0xFF47
+
 /* Memory mapping */
 #define SRAM_BASE                       0xE600
 #define RBUF_BASE                       0xF400
@@ -770,6 +778,7 @@ 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);
 };
 
 enum PDEV_STAT  {PDEV_STAT_IDLE, PDEV_STAT_RUN};