diff options
| author | Jakub Kicinski <kubakici@wp.pl> | 2012-02-23 00:58:57 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-02-27 23:06:44 +0400 |
| commit | 09a3311c1a061bda809ff78c512855f3b71dcd6b (patch) | |
| tree | 76c08c6d6f1f0c4a761fe874a460f3fe2f5c1e0d /drivers/net/wireless/rt2x00 | |
| parent | 2530c55ea9a397c4e5f41c0820084dfc27441d14 (diff) | |
| download | linux-09a3311c1a061bda809ff78c512855f3b71dcd6b.tar.xz | |
rt2800: Add documentation on MCU requests
Add documentation on MCU communication, some of known commands and
their arguments. Supplement command ids.
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800.h | 15 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800pci.c | 8 |
2 files changed, 19 insertions, 4 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h index 3b32f847c834..e5c05d8c7448 100644 --- a/drivers/net/wireless/rt2x00/rt2800.h +++ b/drivers/net/wireless/rt2x00/rt2800.h @@ -1637,6 +1637,7 @@ struct mac_iveiv_entry { /* * H2M_MAILBOX_CSR: Host-to-MCU Mailbox. + * CMD_TOKEN: Command id, 0xff disable status reporting. */ #define H2M_MAILBOX_CSR 0x7010 #define H2M_MAILBOX_CSR_ARG0 FIELD32(0x000000ff) @@ -1646,6 +1647,8 @@ struct mac_iveiv_entry { /* * H2M_MAILBOX_CID: + * Free slots contain 0xff. MCU will store command's token to lowest free slot. + * If all slots are occupied status will be dropped. */ #define H2M_MAILBOX_CID 0x7014 #define H2M_MAILBOX_CID_CMD0 FIELD32(0x000000ff) @@ -1655,6 +1658,7 @@ struct mac_iveiv_entry { /* * H2M_MAILBOX_STATUS: + * Command status will be saved to same slot as command id. */ #define H2M_MAILBOX_STATUS 0x701c @@ -2298,6 +2302,12 @@ struct mac_iveiv_entry { /* * MCU mailbox commands. + * MCU_SLEEP - go to power-save mode. + * arg1: 1: save as much power as possible, 0: save less power. + * status: 1: success, 2: already asleep, + * 3: maybe MAC is busy so can't finish this task. + * MCU_RADIO_OFF + * arg0: 0: do power-saving, NOT turn off radio. */ #define MCU_SLEEP 0x30 #define MCU_WAKEUP 0x31 @@ -2318,7 +2328,10 @@ struct mac_iveiv_entry { /* * MCU mailbox tokens */ -#define TOKEN_WAKUP 3 +#define TOKEN_SLEEP 1 +#define TOKEN_RADIO_OFF 2 +#define TOKEN_WAKEUP 3 + /* * DMA descriptor defines. diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index b45ce7605667..627fc2214cd3 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -522,14 +522,16 @@ static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state) { if (state == STATE_AWAKE) { - rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKUP, 0, 0x02); - rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKUP); + rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, + 0, 0x02); + rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP); } else if (state == STATE_SLEEP) { rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_STATUS, 0xffffffff); rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, 0xffffffff); - rt2800_mcu_request(rt2x00dev, MCU_SLEEP, 0x01, 0xff, 0x01); + rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP, + 0xff, 0x01); } return 0; |