| Message ID | 20170728151157.28983-3-privat@egil-hjelmeland.no |
|---|---|
| State | Changes Requested, archived |
| Delegated to: | David Miller |
| Headers | show |
On Fri, Jul 28, 2017 at 05:11:55PM +0200, Egil Hjelmeland wrote: > lan9303_mdio_write()/_read() must multiply register number by 4 to get > offset. > > Added some commments to the register definitions. > > Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Andrew
Egil Hjelmeland <privat@egil-hjelmeland.no> writes: > lan9303_mdio_write()/_read() must multiply register number by 4 to get > offset. > > Added some commments to the register definitions. > > Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
On 07/28/2017 08:11 AM, Egil Hjelmeland wrote: > lan9303_mdio_write()/_read() must multiply register number by 4 to get > offset. > > Added some commments to the register definitions. > > Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c index 9d0ab77edb4a..96ebeb9bd59a 100644 --- a/drivers/net/dsa/lan9303-core.c +++ b/drivers/net/dsa/lan9303-core.c @@ -20,6 +20,9 @@ #include "lan9303.h" +/* 13.2 System Control and Status Registers + * Multiply register number by 4 to get address offset. + */ #define LAN9303_CHIP_REV 0x14 # define LAN9303_CHIP_ID 0x9303 #define LAN9303_IRQ_CFG 0x15 @@ -53,6 +56,9 @@ #define LAN9303_VIRT_PHY_BASE 0x70 #define LAN9303_VIRT_SPECIAL_CTRL 0x77 +/*13.4 Switch Fabric Control and Status Registers + * Accessed indirectly via SWITCH_CSR_CMD, SWITCH_CSR_DATA. + */ #define LAN9303_SW_DEV_ID 0x0000 #define LAN9303_SW_RESET 0x0001 #define LAN9303_SW_RESET_RESET BIT(0) diff --git a/drivers/net/dsa/lan9303_mdio.c b/drivers/net/dsa/lan9303_mdio.c index 93c36c0541cf..2db7970fc88c 100644 --- a/drivers/net/dsa/lan9303_mdio.c +++ b/drivers/net/dsa/lan9303_mdio.c @@ -40,6 +40,7 @@ static int lan9303_mdio_write(void *ctx, uint32_t reg, uint32_t val) { struct lan9303_mdio *sw_dev = (struct lan9303_mdio *)ctx; + reg <<= 2; /* reg num to offset */ mutex_lock(&sw_dev->device->bus->mdio_lock); lan9303_mdio_real_write(sw_dev->device, reg, val & 0xffff); lan9303_mdio_real_write(sw_dev->device, reg + 2, (val >> 16) & 0xffff); @@ -57,6 +58,7 @@ static int lan9303_mdio_read(void *ctx, uint32_t reg, uint32_t *val) { struct lan9303_mdio *sw_dev = (struct lan9303_mdio *)ctx; + reg <<= 2; /* reg num to offset */ mutex_lock(&sw_dev->device->bus->mdio_lock); *val = lan9303_mdio_real_read(sw_dev->device, reg); *val |= (lan9303_mdio_real_read(sw_dev->device, reg + 2) << 16);
lan9303_mdio_write()/_read() must multiply register number by 4 to get offset. Added some commments to the register definitions. Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> --- drivers/net/dsa/lan9303-core.c | 6 ++++++ drivers/net/dsa/lan9303_mdio.c | 2 ++ 2 files changed, 8 insertions(+)