On Wed, Feb 22, 2012 at 9:58 PM, Jakub Kicinski <kubakici@xxxxx> wrote:
> Bring MCU operations during device initialization to sync
> with legacy driver.
>
> This should fix following error:
> phy0 -> rt2800pci_mcu_status: Error - MCU request failed,
> no response from hardware
>
> Signed-off-by: Jakub Kicinski <kubakici@xxxxx>
Acked-by: Ivo van Doorn <IvDoorn@xxxxxxxxx>
> ---
> v3: move code from switch statement to appropriate function.
> ---
> drivers/net/wireless/rt2x00/rt2800pci.c | 25 +++++++++++++++++--------
> 1 files changed, 17 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
> index 891547c..ac874db 100644
> --- a/drivers/net/wireless/rt2x00/rt2800pci.c
> +++ b/drivers/net/wireless/rt2x00/rt2800pci.c
> @@ -501,11 +501,27 @@ static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
>
> static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
> {
> + int retval;
> +
> if (unlikely(rt2800_wait_wpdma_ready(rt2x00dev) ||
> rt2800pci_init_queues(rt2x00dev)))
> return -EIO;
>
> - return rt2800_enable_radio(rt2x00dev);
> + retval = rt2800_enable_radio(rt2x00dev);
> + if (retval)
> + return retval;
> +
> + /* After resume MCU_BOOT_SIGNAL will trash these. */
> + rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
> + rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
> +
> + rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF, 0xff, 0x02);
> + rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF);
> +
> + rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, 0, 0);
> + rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
> +
> + return retval;
> }
>
> static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
> @@ -543,13 +559,6 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
>
> switch (state) {
> case STATE_RADIO_ON:
> - /*
> - * Before the radio can be enabled, the device first has
> - * to be woken up. After that it needs a bit of time
> - * to be fully awake and then the radio can be enabled.
> - */
> - rt2800pci_set_state(rt2x00dev, STATE_AWAKE);
> - msleep(1);
> retval = rt2800pci_enable_radio(rt2x00dev);
> break;
> case STATE_RADIO_OFF:
> --
> 1.7.7.6
>
> --
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