[PATCH 7/7] net: phy: Add pm support for scan ctrl register to bcm mdio mux

From: Arun Parameswaran
Date: Thu Jul 26 2018 - 14:36:47 EST


Add support for saving and restoring the 'scan control' register
in the Broadcom iProc mdio mux driver.

Signed-off-by: Arun Parameswaran <arun.parameswaran@xxxxxxxxxxxx>
---
drivers/net/phy/mdio-mux-bcm-iproc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio-mux-bcm-iproc.c b/drivers/net/phy/mdio-mux-bcm-iproc.c
index 89c18d6..d1fce1e 100644
--- a/drivers/net/phy/mdio-mux-bcm-iproc.c
+++ b/drivers/net/phy/mdio-mux-bcm-iproc.c
@@ -26,6 +26,9 @@
#define MDIO_RATE_ADJ_INT_OFFSET 0x004
#define MDIO_RATE_ADJ_DIVIDENT_SHIFT 16

+#define MDIO_SCAN_CTRL_OFFSET 0x008
+#define MDIO_SCAN_CTRL_OVERRIDE_EXT_MSTR 28
+
#define MDIO_PARAM_OFFSET 0x23c
#define MDIO_PARAM_MIIM_CYCLE 29
#define MDIO_PARAM_INTERNAL_SEL 25
@@ -51,7 +54,7 @@
#define MDIO_OPERATING_FREQUENCY 11000000
#define MDIO_RATE_ADJ_DIVIDENT 1

-#define MDIO_NUM_OF_REGS_TO_RESTORE 2
+#define MDIO_NUM_OF_REGS_TO_RESTORE 3

struct iproc_mdiomux_desc {
void *mux_handle;
@@ -68,6 +71,7 @@ struct iproc_mdiomux_desc {
static const u16 restore_reg_offsets[MDIO_NUM_OF_REGS_TO_RESTORE] = {
MDIO_RATE_ADJ_EXT_OFFSET,
MDIO_RATE_ADJ_INT_OFFSET,
+ MDIO_SCAN_CTRL_OVERRIDE_EXT_MSTR,
};
#endif

--
1.9.1