pch_phub: Care FUNCSEL register in PM

Only ML7213/ML7223(Bus-n) has this register.
Currently,this driver doesn't care register "FUNCSEL" in suspend/resume.
This patch saves/restores FUNCSEL register only when the device is ML7213 or
ML7223(Bus-n).

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c
index 0fd7e77bee29..61ece53f2f41 100644
--- a/drivers/misc/pch_phub.c
+++ b/drivers/misc/pch_phub.c
@@ -90,6 +90,7 @@
 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG3        0x002C
 #define PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE    0x0040
 #define CLKCFG_REG_OFFSET                       0x500
+#define FUNCSEL_REG_OFFSET                      0x508
 
 #define PCH_PHUB_OROM_SIZE 15360
 
@@ -108,6 +109,7 @@
  * @intpin_reg_wpermit_reg3:            INTPIN_REG_WPERMIT register 3 val
  * @int_reduce_control_reg:             INT_REDUCE_CONTROL registers val
  * @clkcfg_reg:                         CLK CFG register val
+ * @funcsel_reg:                        Function select register value
  * @pch_phub_base_address:              Register base address
  * @pch_phub_extrom_base_address:       external rom base address
  * @pch_mac_start_address:              MAC address area start address
@@ -128,6 +130,7 @@ struct pch_phub_reg {
         u32 intpin_reg_wpermit_reg3;
         u32 int_reduce_control_reg[MAX_NUM_INT_REDUCE_CONTROL_REG];
         u32 clkcfg_reg;
+        u32 funcsel_reg;
         void __iomem *pch_phub_base_address;
         void __iomem *pch_phub_extrom_base_address;
         u32 pch_mac_start_address;
@@ -211,6 +214,8 @@ static void pch_phub_save_reg_conf(struct pci_dev *pdev)
                         __func__, i, chip->int_reduce_control_reg[i]);
         }
         chip->clkcfg_reg = ioread32(p + CLKCFG_REG_OFFSET);
+        if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
+                chip->funcsel_reg = ioread32(p + FUNCSEL_REG_OFFSET);
 }
 
 /* pch_phub_restore_reg_conf - restore register configuration */
@@ -271,6 +276,8 @@ static void pch_phub_restore_reg_conf(struct pci_dev *pdev)
         }
 
         iowrite32(chip->clkcfg_reg, p + CLKCFG_REG_OFFSET);
+        if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
+                iowrite32(chip->funcsel_reg, p + FUNCSEL_REG_OFFSET);
 }
 
 /**