can: c_can: Add d_can suspend resume support

Adds suspend resume support to DCAN driver which enables
DCAN power down mode bit (PDR). Then DCAN will ack the local
power-down mode by setting PDA bit in STATUS register.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h
index 1437a6dbdca5..e5ed41dafa1b 100644
--- a/drivers/net/can/c_can/c_can.h
+++ b/drivers/net/can/c_can/c_can.h
@@ -24,6 +24,7 @@
 
 enum reg {
         C_CAN_CTRL_REG = 0,
+        C_CAN_CTRL_EX_REG,
         C_CAN_STS_REG,
         C_CAN_ERR_CNT_REG,
         C_CAN_BTR_REG,
@@ -104,6 +105,7 @@ static const u16 reg_map_c_can[] = {
 
 static const u16 reg_map_d_can[] = {
         [C_CAN_CTRL_REG]        = 0x00,
+        [C_CAN_CTRL_EX_REG]     = 0x02,
         [C_CAN_STS_REG]         = 0x04,
         [C_CAN_ERR_CNT_REG]     = 0x08,
         [C_CAN_BTR_REG]         = 0x0C,
@@ -166,6 +168,7 @@ struct c_can_priv {
         unsigned int tx_echo;
         void *priv;             /* for board-specific data */
         u16 irqstatus;
+        enum c_can_dev_id type;
 };
 
 struct net_device *alloc_c_can_dev(void);
@@ -173,4 +176,9 @@ void free_c_can_dev(struct net_device *dev);
 int register_c_can_dev(struct net_device *dev);
 void unregister_c_can_dev(struct net_device *dev);
 
+#ifdef CONFIG_PM
+int c_can_power_up(struct net_device *dev);
+int c_can_power_down(struct net_device *dev);
+#endif
+
 #endif /* C_CAN_H */