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d2b0178 |
diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h
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index 2571a2f..822f9e5 100644
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--- a/drivers/net/wireless/rt2x00/rt2800.h
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+++ b/drivers/net/wireless/rt2x00/rt2800.h
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@@ -1627,6 +1627,7 @@ struct mac_iveiv_entry {
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/*
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* H2M_MAILBOX_CSR: Host-to-MCU Mailbox.
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+ * CMD_TOKEN: Command id, 0xff disable status reporting
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*/
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#define H2M_MAILBOX_CSR 0x7010
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#define H2M_MAILBOX_CSR_ARG0 FIELD32(0x000000ff)
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@@ -1636,6 +1637,8 @@ struct mac_iveiv_entry {
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/*
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* H2M_MAILBOX_CID:
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+ * Free slots contain 0xff. MCU will store command's token to lowest free slot.
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+ * If all slots are occupied status will be dropped.
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*/
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#define H2M_MAILBOX_CID 0x7014
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#define H2M_MAILBOX_CID_CMD0 FIELD32(0x000000ff)
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@@ -1645,6 +1648,7 @@ struct mac_iveiv_entry {
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/*
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* H2M_MAILBOX_STATUS:
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+ * Command status will be saved to same slot as command id.
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*/
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#define H2M_MAILBOX_STATUS 0x701c
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@@ -2259,6 +2263,12 @@ struct mac_iveiv_entry {
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/*
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* MCU mailbox commands.
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+ * MCU_SLEEP - go to power-save mode.
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+ * arg1: 1: save as much power as possible, 0: save less power
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+ * status: 1: success, 2: already asleep,
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+ * 3: maybe MAC is busy so can't finish this task
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+ * MCU_RADIO_OFF
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+ * arg0: 0: do power-saving, NOT turn off radio
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*/
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#define MCU_SLEEP 0x30
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#define MCU_WAKEUP 0x31
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@@ -2279,7 +2289,9 @@ struct mac_iveiv_entry {
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/*
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* MCU mailbox tokens
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*/
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-#define TOKEN_WAKUP 3
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+#define TOKEN_SLEEP 1
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+#define TOKEN_RADIO_OFF 2
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+#define TOKEN_WAKEUP 3
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/*
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* DMA descriptor defines.
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diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
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index dc88bae..9ac3017 100644
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--- a/drivers/net/wireless/rt2x00/rt2800pci.c
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+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
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@@ -517,23 +517,6 @@ static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
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}
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}
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-static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
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- enum dev_state state)
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-{
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- if (state == STATE_AWAKE) {
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- rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKUP, 0, 0x02);
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- rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKUP);
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- } else if (state == STATE_SLEEP) {
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- rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_STATUS,
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- 0xffffffff);
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- rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID,
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- 0xffffffff);
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- rt2800_mcu_request(rt2x00dev, MCU_SLEEP, 0x01, 0xff, 0x01);
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- }
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-
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- return 0;
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-}
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-
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static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
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enum dev_state state)
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{
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@@ -541,14 +524,20 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
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switch (state) {
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case STATE_RADIO_ON:
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- /*
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- * Before the radio can be enabled, the device first has
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- * to be woken up. After that it needs a bit of time
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- * to be fully awake and then the radio can be enabled.
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- */
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- rt2800pci_set_state(rt2x00dev, STATE_AWAKE);
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- msleep(1);
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+ /* Initialise all registers and send MCU_BOOT_SIGNAL. */
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retval = rt2800pci_enable_radio(rt2x00dev);
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+
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+ /* After resume MCU_BOOT_SIGNAL will trash those. */
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+ rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
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+ rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
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+
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+ /* Finish initialization procedure. */
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+ rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF,
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+ 0xff, 0x02);
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+ rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF);
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+
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+ rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, 0, 0);
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+ rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
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break;
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case STATE_RADIO_OFF:
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/*
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@@ -556,7 +545,7 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
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* be put to sleep for powersaving.
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*/
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rt2800pci_disable_radio(rt2x00dev);
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- rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
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+ rt2800pci_set_device_state(rt2x00dev, STATE_SLEEP);
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break;
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case STATE_RADIO_IRQ_ON:
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case STATE_RADIO_IRQ_OFF:
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@@ -565,8 +554,16 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
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case STATE_DEEP_SLEEP:
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case STATE_SLEEP:
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case STATE_STANDBY:
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+ /* PCIe devices won't report status after SLEEP request. */
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+ rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
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+ rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
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+ rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP,
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+ 0xff, 0x01);
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+ break;
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case STATE_AWAKE:
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- retval = rt2800pci_set_state(rt2x00dev, state);
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+ rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP,
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+ 0, 0x02);
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+ rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
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break;
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default:
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retval = -ENOTSUPP;
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