Transferring control of a common gain element in a wireless device supporting multiple protocols

1. A system for use in a wireless device, the system comprising:

a gain element coupled to receive a first and second signals, wherein the gain element is adjustable to amplify the received first and second signals by an adjustable amount;

first wireless protocol circuitry coupled to the gain element, wherein the first wireless protocol circuitry is configured to receive and process the first signals according to a first wireless protocol;

second wireless protocol circuitry coupled to the gain element, wherein the second wireless protocol circuitry is configured to receive and process the second signals according to a second wireless protocol; and

wherein the first wireless protocol circuitry is configured to:

determine whether the second wireless protocol circuitry is active;

determine whether the gain element is currently shared; and

in response to determining that the second wireless protocol circuitry is active and the gain element is currently shared, take control of the gain element from the second wireless protocol circuitry.

2. The system of claim 1 , wherein the first wireless protocol circuitry is further configured to:

receive, from the second wireless protocol circuitry, an indication of a current gain setting of the gain element; and

control a gain setting of the gain element based on the current gain setting of the gain element.

3. The system of claim 1 , wherein the first wireless protocol circuitry is further configured to: send a request for control of the gain element to the second wireless protocol circuitry; and

receive an acknowledgement that the first wireless protocol circuitry is taking control of the gain element from the second wireless protocol circuitry.

4. The system of claim 1 , wherein the second wireless protocol circuitry is configured to:

receive a request for control of the gain element from the first wireless protocol circuitry; and

send, in response to receiving a request for control of the gain element from the first wireless protocol circuitry, an acknowledgement that the first wireless protocol circuitry is taking control of the gain element to the first wireless protocol circuitry.

5. The system of claim 1 ,

wherein the second wireless protocol circuitry is configured to adjust one or more gain control settings of the second wireless protocol circuitry in response to the second wireless protocol circuitry no longer controlling the gain element.

6. The system of claim 1 ,

wherein in response to determining that the second wireless protocol circuitry is inactive or the gain element is not currently shared, the first wireless protocol circuitry is configured to take control of the gain element without notifying the second wireless protocol circuitry.

7. The system of claim 1 , wherein upon preparing to enter an inactive state, the first wireless protocol circuitry is configured to:

determine whether the second wireless protocol circuitry is active;

determine whether the gain element is currently shared; and

in response to determining that the second wireless protocol circuitry is active and the gain element is currently shared, send a request that the second wireless protocol circuitry take control of the gain element to the second wireless protocol circuitry.

8. The system of claim 7 ,

wherein in response to receiving a request that the second wireless protocol circuitry take control of the gain element from the first wireless protocol circuitry, the second wireless protocol circuitry is configured to control a gain setting of the gain element.

9. The system of claim 1 ,

wherein the second wireless protocol circuitry is configured to:

determine whether the first wireless protocol circuitry is active;

determine whether the gain element is currently shared;

in response to determining that the first wireless protocol circuitry is inactive or the gain element is not currently shared, control a gain setting of the gain element; and

wherein the second wireless protocol circuitry is configured to not control the gain setting of the gain element in response to determining that the first wireless protocol circuitry is active and the gain element is currently shared.

10. A method for operating a communication device, the communication device comprising a first wireless protocol circuitry and a second wireless protocol circuitry, the method comprising:

receiving input signals;

activating the first wireless protocol circuitry;

checking whether the second wireless protocol circuitry is active;

determining whether a gain element common to the first and second wireless protocol circuitry is shared; and

providing control of the gain element to the first wireless protocol circuitry in the event the second wireless protocol is active and the gain element is currently shared.

11. The method of claim 10 , wherein said providing control of the gain element to the first wireless protocol circuitry comprises:

receiving, by the first wireless protocol circuitry, an indication of a current gain setting of the gain element; and

controlling, by the first wireless protocol circuitry, a gain setting of the gain element based on the current gain setting of the gain element.

12. The method of claim 10 , further comprising:

sending, by the first wireless protocol circuitry, a request for control of the gain element;

receiving, by the first wireless protocol circuitry, an acknowledgement of the request for control of the gain element.

13. The method of claim 10 , further comprising:

receiving, by the second wireless protocol circuitry, a request for control of the gain element;

sending, by the second wireless protocol circuitry, an acknowledgement of the request for control of the gain element, wherein said ending an acknowledgement is performed in response to receiving the request for control of the gain element.

14. The method of claim 10 , wherein providing control of the gain element to the first wireless protocol circuitry comprises the second wireless protocol circuitry no longer controlling the gain element, the method further comprising:

adjusting, by the second wireless protocol circuitry, one or more gain control settings of the second wireless protocol circuitry in response to the second wireless protocol circuitry no longer controlling the gain element.

15. The method of claim 10 , further comprising:

preparing to deactivate the first wireless protocol circuitry;

in response to preparing to deactivate the first wireless protocol circuitry:

checking whether the second wireless protocol circuitry is active;

determining whether the gain element is currently shared; and

providing control of the gain element to the second wireless protocol circuitry in the event the second wireless protocol is active and the gain element is currently shared.

16. The method of claim 15 , further comprising:

controlling, by the second wireless protocol circuitry, a gain setting of the gain element in response to said providing control of the gain element to the second wireless protocol circuitry.

17. The method of claim 10 , further comprising:

activating the second wireless protocol circuitry;

in response to activating the second wireless protocol circuitry:

checking whether the first wireless protocol circuitry is active;

determining whether the gain element is currently shared; and

providing control of the gain element to the second wireless protocol circuitry in the event the first wireless protocol circuitry is inactive or the gain element is not currently shared;

wherein control of the gain element is not provided to the second wireless protocol circuitry in the event the first wireless protocol circuitry is active and the gain element is currently shared.

18. The method of claim 17 , further comprising

controlling, by the second wireless protocol circuitry, a gain setting of the gain element in response to said providing control of the gain element to the second wireless protocol circuitry.

19. A method for operating a communication device, wherein the communication device comprises first wireless protocol circuitry and second wireless protocol circuitry, the method comprising:

the first wireless protocol circuitry entering an active state;

in response to the first wireless protocol circuitry entering an active state:

the first wireless protocol circuitry determining whether the second wireless protocol circuitry is active;

the first wireless protocol circuitry determining whether a gain element is currently shared, wherein the first wireless protocol circuitry and the second wireless protocol circuitry are each coupled to the gain element, wherein the gain element is adjustable to amplify signals by an adjustable amount;

the first wireless protocol circuitry taking control of the gain element from the second wireless protocol circuitry in response to determining that the second wireless protocol circuitry is active and the gain element is currently shared.

20. The method of claim 19 , wherein the first wireless protocol circuitry taking control of the gain comprises:

receiving, from the second wireless protocol circuitry, an indication of a current gain setting of the gain element; and

controlling a gain setting of the gain element based on the current gain setting of the gain element.